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HomeMy WebLinkAboutESC and SWPPPESC and SWPPP For Emerson Park Subdivision Phase 1 (T-O Project #07068) Prepared for: Kuna Victory LLC PO Box 2020 Boise, ID 83701 August 2008 Prepared by: Ben Taylor Approved by: >� Jay Hovde G" if PD License # W7 CON08-00019 22/�� E ices 1/ /1 Toothman-Orton Engineering Company 9777 Chinden Blvd. Boise, Idaho 83714-2008 (208) 323-2288 TABLE OF CONTENTS Introduction 2 Project Description and Schedule 2 Potential Pollutant Sources 3 General Construction Site Practices 3 Slope Protection and Stabilization 3 Sediment Control and Runoff Protection 4 Wind Erosion Control 4 Tracking Control BMP Practices 4 Waste Management and Materials Pollution Control 5 Soil Transport 5 BMP Install Schedule 6 BMP Removal Schedule 6 Final Stabilization Measures 7 Construction BMP Maintenance, Inspection and Repair 7 Conclusion 8 Best Management Practices (BMP's) 8 NPDES Permit Requirements 8 Inspection Record 9 Appendix BMP # 1 - Timing of Construction BMP #2 - Staging Areas BMP #3 - Preservation of Existing Vegetation BMP #4 - Clearing Limits BMP #5 - Stabilized Construction Entrance BMP #7 - Dust Control BMP #8 - Cover for Materials and Equipment BMP #9 - Stockpile Management BMP #10 - Spill Prevention and Control BMP #11 - Vehicle/Equipment Washing and Maintenance BMP #12 - Waste Management BMP #13 - Concrete Waste Management BMP #14 - Sanitary/ Septic Waste Management BMP #20 - Topsoiling BMP #21 - Seeding BMP #22 - Sodding BMP #23 - Planting BMP #31 - Inlet Protection BMP #36 - Silt Fence BMP #6 (DEQ Catalog - Permanent Controls) — Catch Basin Inserts Potential Pollutant Sources The primary construction activities, materials and wastes that have the potential to pollute storm water include: 1. Demolition of existing building foundation. 2. Rough grading, soil disturbing activities, and resulting exposed soil. 3. Concrete and concrete wastewater from truck washout. 4. Off site mud and dirt tracking, including dust. 5. Solid waste from construction and site litter. 6. Portable toilet waste The primary pollutant from these sources is sediment. The surface soil on the site (based on a geotechnical report prepared by MTI and dated August 24, 2006) is generally loamy topsoil with a high concentration of organics (due to the current use as landscaping nursery). Given the nature of anticipated runoff and the location of proposed grading, the primary concern is the tendency for sediment -laden waters to travel off the site into the existing landscaping nursery. With this in mind, we have proposed the following plan to reduce impact on the existing storm water controls. General Construction Site Practices The following are general practices, which will help minimize erosion and storm water pollution due to construction. a. Timing of Construction (BMP #1) — Schedule and sequence work to occur during periods where the potential for erosion is lowest. b. Staging Areas (BMP#2) — Stage materials in the location shown on the attached SWPPP Site Plan. c. Clearing Limits (BMP #4) — Establish prior to site clearing to minimize exposed bare ground d. Stabilized Construction Entrance (BMP #5) — Establish prior to clear and grub phase. e. Dust Control (BMP #7) - The site shall be sprinkled with water, so that the soil is wet but not muddy, as required to meet and maintain air quality standards. f. Cover for Materials and Equipment (BMP#8) — Material generated during construction (such as spoils piles) shall be covered at the end of each day. g. Stockpile management (BMP 49) — Stockpiles of materials (such as aggregate base or pit run) shall be placed in the designated staging area. Slope Protection and Stabilization Slope protection will not be required on this project as there are no slopes being disturbed. Emerson Park Subdivision — Phase 1 Waste Management and Materials Pollution Control The following construction material and wastes, which have the potential to cause storm water pollution, will be generated or brought on site. • Grout Mix • Concrete and concrete wastewater • PCC/Asphalt Rubble • Litter • Sanitary/Septic Portable toilet Most materials and wastes will be immediately used and/or removed. PCC rubble, asphalt rubble and litter will be promptly removed from the site and properly disposed of. Portable toilets for Sanitary/Septic Waste Management will be regularly maintained, kept in good working order and placed in convenient locations away from traffic and storm drain facilities (BMP #14). Arrangements shall be made for regular services and disposal. Designated waste collection areas and containers for construction trash shall be provided on site (BMP # 12). Soil Transport Significant volumes of cut or fill material may need to be exported from or imported to the site. In addition, engineered grading material such as underslab gravel, sub -base, and base course will be required during construction. Soil transported on site will be stored in the area shown on the Erosion Control plan. In the event that soil is transported off site it will be transported to a location designated appropriate by the Engineer. Construction traffic will use a designated construction entrance, which will be swept to keep sediment off of roadway. Vehicles shall be cleaned as required to keep sediment off roadway. Emerson Park Subdivision — Phase 1 Final Stabilization Measures The site will be landscaped in accordance with plans submitted to the City of Meridian. In the case that landscaping is not performed, suitable post -construction BMP's shall be implemented as required within 30 days after the completion of construction. These BMP's shall include some or all of the following: • BMP #20 — Topsoiling • BMP #21 — Seeding • BMP 422 — Sodding Construction BMP Maintenance, Inspection and Repair At a minimum, the Contractor shall inspect the site before and after storm events, and at 24-hour intervals during extended storms. The permit may require additional inspection. The result of the inspections and assessments shall be recorded on the Construction Site Inspection Checklist and the Inspection Record included at the end of this plan. The Construction Site Inspection Checklist and all Inspection Records shall be available for review at the job site during construction activities. A tracking of follow-up procedure shall follow any inspection that identifies deficiencies in BMP's. Any questions regarding this plan should be directed to the engineer or the responsible person. The Maintenance and repair program is as follows: BMP #7 - Dust Control—Applywater as needed BMP #14 - Waste Management As needed BMP #31 & BMP #6 - Inlet Protection and Catch Basin Inserts Remove accumulated sediment and debris Emerson Park Subdivision — Phase 1 INSPECTION RECORD Date Time Inspector's Name Weather Conditions BMP Items Inspection Frequency Rainy Non -Rainy Observations Required Action Date Completed BMP #1 Timing of Construction Daily Monthly BMP #7 Dust Control Daily BMP #14 Waste Management Daily Weekly BMP #31 BMP #6 Inlet Protection, Catch Basin Inserts After Storm Weekly INSPECTION RECORD Date Inspector's Name Time Weather Conditions BMP Items Inspection Frequency Rainy Non -Rainy Observations Required Action Date Completed BMP #1 Timing of Construction Daily Monthly BMP #7 Dust Control Daily BMP #14 Waste Management Daily Weekly BMP #31 BMP #6 Inlet Protection, Catch Basin Inserts After Storm Weekly APPENDIX BEST MANAGEMENT PRACTICES (BMP' S) Timing of Construction Description Schedule and sequence construction work and erosion control applications so that they occur under optimal conditions --that is, during periods when the potential for erosion is lowest. Proper timing will minimize erosion and also maximize the effectiveness of control methods. Applications This measure applies to almost any ground -disturbing activity, but it is especially relevant to large construction projects and any areas where work activities can be planned to coincide with periods of low erosion potential, such as during dry weather. The period May 15 through November 1 is recommended as the best time for initiating construction activities and completing soil stabilization in most of Idaho. When construction during the wet season is unavoidable, use other BMPs described in this catalog to control erosion, such as any of the slope protection techniques. Limitations Drainage area - unlimited Maximum slope — unlimited Minimum bedrock depth - N/A Minimum water table — N/A NRCS soil type - ABCD Freeze/thaw — good Drainage/flood control — no Targeted Sediment Pollutants Design N Construction work involving soil disturbance or exposure should be Parameters scheduled during seasonal low -runoff periods under favorable soil moisture conditions whenever possible. ■ Erosion controls should be installed in stages to protect completed work and minimize exposed soils. ■ Sediment collection systems should be installed prior to activities expected to produce sediment. ■ Slope stabilization measures should be initiated within 14 calendar days after construction activities in that portion of the site where earthmoving activities have temporarily or permanently ceased. ■ Consider site characteristics and permit conditions when deciding what kind of erosion control devices to incorporate into a construction project. Select measures that can be installed without disrupting critical timing or sequencing of other construction or erosion control activities. ■ Identify the locations and dimensions for all erosion control and stormwater management measures as clearly as possible on the site plans. This will help ensure effectiveness and proper timing of installation or implementation. Construction a Develop a scheduling/sequencing plan that addresses the following timing Guidelines considerations. If using a Critical Path Method (CPM) for scheduling, incorporate the erosion control and stormwater management practices into the CPM. IDEQ Storm Water Best Management Practices Catalog 20 September 2005 ■ Work activities that leave a site most susceptible to erosion should be scheduled for periods when the potential for erosion is lowest. ■ Allow time to install sediment collection systems, drainage systems, and runoff diversion devices before beginning ground -disturbing work in a given area. ■ Plan to install and maintain effective soil stabilization measures as work progresses, not just at the completion of all construction. ■ Conduct work in units or stages so that some portions of the project site are final -graded and ready for seeding each time an approved season of seeding arrives. (See BMP 2-Staging Areas). Maintenance Continually monitor site conditions and progress of work. Update the project work schedule to maintain appropriate timing and sequencing of construction and control applications. IDEQ Storm Water Best Management Practices Catalog 21 September 2005 Staging Areas BMP 2 Description This BMP includes measures for collecting runoff from a staging area, materials storage site, or industrial activity area or for diverting water flow away from such areas so that pollutants do not mix with clean stormwater runoff. Various flow diversion structures, called stormwater conveyances, can be used to contain runoff on site, to channel it around the industrial area, or to carry pollutant -laden water directly to a treatment device or facility. Several options are available: Stormwater Conveyances: This term includes many kinds of channels, gutters, drains, and sewers. Storniwater conveyances can be either temporary or permanent. They are constructed or lined with many different materials, including concrete, clay tiles, asphalt, plastics, metals, riprap, compacted soils, and vegetation. The type of material used depends on the use of the conveyance. Dikes or Berms: Diversion dikes or berms are ridges built to block runoff from passing beyond a certain point. Temporary dikes are usually made with compacted soil or compost. More permanent ones are constructed out of concrete, asphalt, or other durable materials. Diversion dikes are used to prevent the flow of stormwater runoff onto construction or staging/storage areas. Limiting the flow across these areas reduces the volume of stormwater that may carry pollutants from the area and may, therefore, require treatment. This method is suitable for sites where significant volumes of stormwater runoff tend to flow onto active materials handling or equipment staging sites and other construction areas. Graded Areas and Pavement: Land surfaces can be graded, or graded and paved, so that stormwater runoff is directed away from construction activity areas. The slope of the grade allows the runoff to flow, but keeps it from washing over areas that may be contaminated with pollutants. Like conveyances and dikes, grading can prevent runoff from entering construction areas and becoming contaminated with pollutants from these areas. Grading can be a permanent or temporary control measure. Applications Stormwater Conveyances: Stormwater conveyances can be used for two different purposes. The first is to keep uncontaminated stormwater from getting into areas of a construction site where it may become contaminated. This can be accomplished by collecting the stormwater in a conveyance and directing the flow away from those areas. Secondly, conveyances can be used to collect stormwater downhill from construction areas and keep it separate from runoff that has not been in contact with those areas. When potentially contaminated stormwater is collected in a conveyance like this, it can be directed to a treatment device or another facility on the site if desired. IDEQ Storm Water Best Management Practices Catalog 22 September 2005 Other beneficial aspects of stormwater conveyances include: ■ Prevention of temporary flooding at industrial sites. ■ Low maintenance. ■ Erosion -resistant conveyance of stormwater runoff. ■ Long-term control of stormwater flows. Dikes or Berms: Typically, dikes are built on slopes just uphill from an active construction area together with some sort of a conveyance, such as a Swale. The conveyance is necessary to keep the water away from the dike so that the water will not pool and seep through the dike. See BMP 41-Earth Dike. Some advantages of diversion dikes are that they: ■ Effectively limit stormwater flows over industrial site areas. ■ Can be installed at any time. ■ Are economical, temporary structures when built from soil on site. ■ Can be converted from temporary to permanent at any time. Graded Areas and Pavement: Grading is appropriate for any construction site where outdoor activities may pollute stormwater runoff --parking lots or outdoor storage areas, for example. Grading is often used in conjunction with coverings, buffer zones, and other practices to reduce the runoff velocity, increase infiltration of uncontaminated runoff, or direct pollutant -laden runoff to stormwater treatment facilities. Grading and paving are relatively inexpensive and easy to implement. Limitations Drainage area - unlimited Maximum slope — 15% Minimum bedrock depth - N/A Minimum water table — N/A NRCS soil type - ABCD Freeze/thaw — good Drainage/flood control — yes Stormwater Conveyances: Once the stormwater is concentrated in conveyances, it should be routed through stabilized structures all the way to its discharge to a receiving water or other stormwater BMP. ■ May increase flow rates. ■ May be impractical if there are space limitations. ■ May be expensive to install, especially for small facilities or after a site has already been constructed. Dikes and Berms ■ Are not suitable for large drainage areas unless there is a gentle slope. ■ May require maintenance after heavy rains. Graded Areas and Pavement ■ May be uneconomical to re -grade and resurface large areas. ■ May not be effective during heavy precipitation. IDEQ Storm Water Best Management Practices Catalog 23 September 2005 Targeted Sediment Pollutants Design Stormwater Conveyances: In plamung for stormwater conveyances, consider Parameters the amount and speed of the typical stormwater runoff. Also, consider the stormwater drainage patterns, so that channels may be located to collect the most flow and can be built to handle the amount of water they will receive. When deciding on the type of material for the conveyance, consider the resistance of the material, its durability, and its compatibility with any pollutants it may carry. Conveyance systems are most easily installed when a facility is first being constructed. Where possible, use existing grades to decrease costs. Grades should be positive to allow for the continued movement of the runoff through the conveyance system; however, grades should not create an increase in velocity that causes an increase in erosion. Consider the materials used for lining the conveyance and the types of outlet controls provided. Dikes and Berms: In planning for the installation of dikes, consider the slope of the drainage area, the height of the dike, the amount of runoff it will need to divert, and the type of conveyance that will be used with the dike. Steeper slopes result in higher volumes of runoff and higher velocities, which the dike should be capable of handling. Remember that dikes are limited in their ability to manage large volumes of runoff. See BMPs 41-Earth Dike for additional parameters. Graded Areas and Pavement: When designing graded and paved areas, be sure to consider both control and containment of runoff flows. The grading should control the uncontaminated flow by diverting it around areas that may have pollutants. The grading should also contain the contaminated flows or divert them to treatment facilities. Construction Stormwater Conveyances: Specific construction methods apply to the type of Guidelines conveyance being used. Dikes and Berms: Ideally, dikes are installed before construction activity begins. However, dikes can be easily constructed at any time. Temporary dikes (usually made of dirt) generally only last for 13 months or less, but they can be made into permanent structures by stabilizing them with vegetation. Slope protection such as vegetation is crucial for preventing the erosion of the dike. Graded Areas and Pavement: Staging/storage areas should be designated prior to the start of construction. Maintenance It is best to inspect stormwater conveyances within 24 hours of a rainstorm and remove debris promptly. Make daily inspections during periods of prolonged rainfall, since heavy storms may clog or damage the conveyances. It is important to repair damage to these structures as soon as possibie. IDEQ Storm Water Best Management Practices Catalog 24 September 2005 Dikes should be inspected regularly for damage. This is especially important after storm events since a heavy rain may wash parts of a temporary dike away. Any necessary repairs should be made immediately to make sure the structure continues to function effectively. Inspect unpaved, graded areas to check for gullies and other signs of erosion. Inspect paving regularly for cracks that may allow contaminants to seep into the ground. Also, check to make sure that the drains receiving the discharge from the paved area remain free of clogged sediment or other debris so that the water does not back up into areas where pollutants may be. IDEQ Storm Water Best Management Practices Catalog 25 September 2005 Preservation of Existing Vegetation Description Protect existing vegetation (including trees, grasses, and other plants) by preventing disturbance or damage to specified areas of a construction site or right-of-way. Preserving natural vegetation provides buffer zones and stabilized areas, which help control erosion, protect water quality, and enhance aesthetic benefits. This practice minimizes the amount of bare soil exposed to erosive forces. Applications This technique is applicable to all types of sites. Areas where preserving vegetation can be particularly beneficial are floodplains, wetlands, stream banks, steep slopes, and other areas where other structural erosion controls would be difficult to establish, install, or maintain. Compared to newly planted or seeded areas, preserving natural vegetation has many advantages: ■ It can handle higher quantities of stormwater runoff than newly seeded areas. ■ It does not require time to establish (it is effective immediately). ■ It has greater filtering capacity because the vegetation and root structure are usually denser in preserved natural vegetation than in newly seeded or base areas. ■ It usually requires less maintenance, watering, and chemical application (e.g., fertilizer, pesticides) than planting new vegetation. It also: ■ Enhances aesthetics. ■ Provides areas for infiltration, thus reducing the quantity and velocity of stormwater runoff. ■ Allows areas where wildlife can remain undisturbed. ■ Provides noise buffers and screens for on -site operations. Limitations Drainage area - unlimited Maximum slope — unlimited Minimum bedrock depth - N/A Minimum water table - N/A NRCS soil type - ABCD Freeze/thaw — good Drainage/flood control — no Preservation of natural vegetation may be impractical in some situations because: ■ It may constrict the area available for construction activities. ■ It may not be cost-effective in areas with high land values. Targeted Sediment Pollutants Design Successful preservation of vegetation requires good planning and site Parameters management to minimize the impact of construction activities on existing vegetation. The areas to be preserved should be identified in the plans and clearly marked in the field before any site disturbance begins. Clearly mark all trees to be preserved, and protect against ground disturbance tree.within the driphrie of each marked IDEQ Storm Water Best Management Practices Catalog 26 September 2005 The dripline marks the edge of the tree's foliage where drips from rainfall would drop. Most of the tree's roots lie within the dripline and are vulnerable to damage. ■ Preserving natural vegetation may affect some aspects of staging, work sequencing, and constriction cost. In addition, control measures may be needed around the perimeter of the preserved area to maintain adequate water flow and drainage and to prevent damage from excessive erosion or sedimentation. Be sure to consider these and related factors when preparing the project site plan and project cost estimates. ■ Consider the use of design exceptions to enable preservation of natural vegetation in certain areas where it would typically be removed and where its preservation would not pose safety problems. Construction Check the project plans for areas designated for preservation of natural Guidelines vegetation. Keep all construction equipment, materials, and waste out of the designated areas. ■ Do not modify existing drainage patterns through or into any preservation area unless specifically directed by the plans or approved by the local permitting authority. ■ Perform maintenance activities as needed to ensure that the vegetation remains healthy and able to aid in erosion control and sediment collection. Maintenance Inspect at regular intervals to make sure the preserved vegetated areas remain undisturbed and are not being overwhelmed by sediment. Implement maintenance or restorative actions as needed. Proper maintenance is important to ensure healthy vegetation that can control erosion. Different species, soil types, and climatic conditions will require different maintenance activities such as snowing. Maintenance should be performed regularly, especially during construction. IDEQ Storm Water Best Management Practices Catalog 27 September 2005 Clearing Limits BMP 4 Description Minimize the total amount of bare soil exposed to erosive forces by (1) controlling the amount of ground that is cleared and grubbed at one time in preparation for construction, and (2) limiting the amount of time that bare ground may remain exposed before slope protection or stabilization measures are put into place. This measure, in conjunction with appropriate timing (avoiding the rainy season), can reduce erosion and sedimentation. Applications Any areas where vegetation should be removed to facilitate construction. This practice should be a design consideration of all projects. It may be necessary to carefully coordinate land clearing, grading, and erosion control measures --see BMP 1-Timing of Construction. Limitations Drainage area - unlimited Maximum slope — unlimited Minimum bedrock depth - N/A Minimum water table - N/A NRCS soil type - ABCD Freeze/thaw — good Drainage/flood control — no Targeted Sediment Pollutants Design N Evaluate the erosion potential of the project site (based on slope, soil type, Parameters intended season of work, use of heavy equipment). ■ Based on the above analysis, establish the maximum allowable area that may be exposed at one time. The project site plan should clearly specify the maximum allowable exposure area. ■ Initiate slope protection and reclamation as work progresses to help minimize the amount of disturbed soil. ■ In all cases, stabilization measures should be initiated within 14 days after ceasing work in a given area or as soon as practicable during seasonally and periods. Construction w Do not disturb any areas that are not actually needed for the specified Guidelines construction or related staging activities. See BMP 3-Preservation of Existing Vegetation. ■ Conduct work in units or stages so that construction and stabilization take place promptly after clearing and grubbing and as much of the site as possible is ready for seeding each time the specified seeding season arrives. ■ Implement soil stabilization measures concurrently with the progress of clearing and grading work to minimize the length of time that bare ground lies exposed to erosion. ■ At the approach of a designated seeding season, be prepared to seed all portions of the project that are ready for seeding (as required). IDEQ Storm Water Best Management Practices Catalog 28 September 2005 Maintenance Conduct periodic inspections to check for unnecessary ground disturbance. Also check for clearing and grubbing beyond the contractor's capability and progress in keeping grading and pollution control measures current (in accordance with accepted work schedule). I ItMI-I � G I ncovoct Correct Barrier should be installed at the drip line of tree branches. IDEQ Storm Water Best Management Practices Catalog 29 September 2005 Stabilization of Construction Entrance/Exit BMP 5 Description A temporary sediment removal device --normally a pad of crushed rock or stone --can be installed at the approach from a construction site to a public roadway to stabilize the road. This BMP is used to limit sediment tracking from vehicles and equipment leaving the construction site onto public rights - of -way and streets. Applications A stabilized construction entrance is appropriate in the following locations: • Wherever vehicles are entering or leaving a construction site to or from a public right-of-way, street, alley, sidewalk or parking area. • At any unpaved entrance/exit location where there is risk of transporting mud or sediment onto paved roads. Limitations Drainage area - unlimited Minimum bedrock depth — 3 ft NRCS soil type - ABCD Drainage/flood control — no Targeted 2 Sediment Pollutants K Phosphorus • Trace Metals • Hydrocarbons Maximum slope — 15% Minimum water table — N/A Freeze/thaw — good Design Width: The width should be at least 10 ft but not less than the full width of Parameters points where ingress or egress occurs. At sites where traffic volume is high, the entrance should be wide enough for two vehicles to pass safely. Flare the entrance where it meets the existing road to provide a sufficient turning radius. Length: The minimum length should be 50 ft except on a single -residence lot where a 30 ft minimum would apply. Depth: Total depth of rock should be at least 6 in. Aggregate: Fractured stone 2 to 8 in. diameter (for the base layer) and crushed stone 2 in. diameter or reclaimed or recycled concrete equivalent (for the top layer). Geotextile (filter fabric): Most installations will include geotextile (filter fabric) with the products placed over the entire area to be covered with aggregate. Work on single residential lots will generally not need geotextile unless there is potential for excessive erosion, a high water table, or other risk factor. The geotextile should be a woven or IDEA Storm Water Best Management Practices Catalog September 2005 30 nonwoven fabric filaments or yarnconsisting only of continuous chain polymeric s of polyester. The geotextile should be inert to commonly encountered chemicals, hydrocarbons, mildew, and rot resistant. Drainage: Runoff from a stabilized construction entrance should drain to a sediment trap or a sediment basin. Piping of surface water under the entrance should be provided as needed. If piping is impossible, install a mountable berm with 5:1 slopes. Dust Control: Dust control should be provided at all times (see BMP 7-Dust Control). Construction K Clear all vegetation, roots, and all other obstructions in preparation for Guidelines grading. • Prior to placing geotextile (filter fabric), make sure that the entrance is properly graded and compacted. • To reduce maintenance and loss of aggregate, place geotextile over the existing ground before placing the stone for the entrance. • Place a 1 ft layer of fractured stone over the entire width and length of the entrance. • Place a 4 in. layer of 2 in. crushed stone over the base layer. Maintenance N The entrance should be maintained in a condition that will prevent tracking or flow of mud onto public rights -of -way. This may require periodic top dressing with additional 2 in. stone (as conditions demand) and repair or cleaning of any structures used to trap sediment. • All materials spilled, dropped, washed, or tracked from vehicles onto roadways or into storm drains should be removed immediately. When necessary, vehicle wheels should be cleaned to remove sediment prior to entrance onto public rights -of -way. When washing is required, it should be done on an area stabilized with aggregate that drains into an approved sediment trap. Trapped sediment should be removed from the site or stabilized on site and prevented from entering storm drains, ditches, or waterways. Disturbed soil areas resulting from removal should be permanently stabilized. • The stabilized construction entrance may be removed after final site stabilization is achieved or after the temporary BMPs are no longer needed. IDEQ Storm Water Best Management Practices Catalog September 2005 31 50• '. F II_TER CLOTH----/ MIN EXIS i7NC PAVEMENr PROFILE EXISTING GROUND 1-- 50' MIN STANOARE) +C . SYM80L PLAN VIEW MOUNTABLE BERM (OPTIONAL) 10' MtN EXISTING CONS T RUCTION SPECIFICATIONS i STONE SIZE —USE Z" STONE OR RCCLAIMED CP. RECYCLED CONCRETE EQUIVALENT, '= LENOTH—AS REQUIRED, BUT NOT LESS THAN 50 FE:7 (EXCEPT ON WHERE A 30 FOOT MINIMUM LENGT}i WOULD APPLY}. A SING F RESIDENCE l07 3 THICKNESS —NOT' LESS THAN 6 INCHES, WIOTH-- 10 FOOT MINIMUM, BUT NOT LESS T"" THE FULL WIDTH Ai POINTS WNE.rRE INGRE S 5 FILTER CLOTH SS CWILLSBE P'�ACE-o OvER THE ENTIRE AREA PRIOR TO P1 WILL NOT BE REQU)I E0 ON A SINCL,E FAMILY RESIDENCE LOT.-"�C1NC OF STONE. FILTER 5 SURFACE WATER -.ALL SURFACE WATER FLOWING OR 01VERTE0 TOWARD CONSMUCTION ENTRANCES SHALL BE PIPED ACF055 THE ENTRANCE. 5:1 SLOPE'S WILL GC f'ERIAI a ED. IF PIPING IS IMPRACTICAL, A MOUNTABLE BERM WITH 7 NTLL PR CH wtEYE MAINTENANCE —THE rNTRA.NCE SMALL BE MAINTAINED IN A CCNQITIONS MAY E` TRACKING OR rLOWrNG OF SEOt► ENT ONTO PUBLIC RIGHT—pf -iYAY, 7HWHIWILL Rt~p PERIODIC TOR" OREyStNG WITH ADDITIONAL STONE AS CONOITIONS DEMAND ANO REPAIR ANO/OR CLEANOUT OF ANY MEASURES USED TQ TRAP SEDIMENT. ALL SEDIMENT SPILLED, OROPPEO, WASHED OR TRACKED ONTO PUBLIC RIC8TS—OF_,,yAY MUST BE REMOVED IMMEDIATELY, 8 WASHING —WHEELS SHALL BE CLEANED TO REMOVE SEDIMENT PRIOR TO ENTRANCE ONTO PU8L.IC RI(;HT'S—OF—'yyAY. WHEN WASHING IS REOWIRED. IT SHALL BE 00NE ON AN AREA STAEILIZED WITH S-10NE ANa WHICH DRAINS INTO AN 9 PERjOQtC INSPECTION APROvEC SEDIMENT TRAPPING DEVICE. lOAND NEEDED P�M"NrENANCE .SHALL Bin PROVICED AFTER EAC:I RAIN. u.- UEFARTMENT OF AGRICULTURE SGI!-ONSEPVI�itON SE=`l1C 'Cr Tr4.MAN-ORTON aCISE• IDAHO ENG;NEE.RING COMAr iY MCE%LL. IOZO S T ABIL.IZED CONSTRUCTION ENTERANCE S T ANCAR 0 DRAWING SCE--- I Dust Control Description This BMP describes products or measures used for reducing or preventing wind erosion by protecting the soil surface, roughening the surface, and reducing the surface wind velocity. Several dust control treatments are described below. Other methods are also available. Vegetative Cover: For disturbed areas not subject to traffic, vegetation provides the most practical method of dust control (see BMP 21-Seeding and BMP 22-Sodding). Mulch (including gravel mulchl: When properly applied, mulch offers a fast, effective means of controlling dust (see BMP 15-Mulching). Spray -On Adhesive: Asphalt emulsions, latex emulsions, or resin in water can be sprayed onto mineral soil to control dust (see BMP 16-Hydromulching). Sprinkling: The site may be sprinkled with water tmtil the surface is wet. Sprinkling is especially effective for dust control on haul roads and other traffic routes. Stone: Stone or gravel used to stabilize construction roads and disturbed soils can also be effective for dust control and reduce soil losses from those areas by up to 80% . Surface Roughening: Tilling or discing the surface of disturbed soils to produce a rough surface or ridges which when perpendicular to prevailing winds can reduce soil losses due to wind by 80% (see BMP 25-Slope Roughening). Barriers: A board fence, wind fence, sediment fence, or similar barrier can control air currents and blowing soil. All of these fences are normally constructed of wood. Perennial grass and stands of existing trees may also serve as wind barriers. Barriers prevent erosion by obstructing the wind near the ground and preventing the soil from blowing off site. Applications The above measures for dust control should be used when open, dry areas of soil are anticipated on the site. Clearing and grading activities create the opportunity for large amounts of dust to become airborne. Therefore, one or several dust control measures should be considered prior to clearing and grading. In many cases, water erosion control measures incorporated into the project will indirectly prevent wind erosion. As a standard practice, any exposed area should be stabilized using vegetation to prevent both wind and water erosion. When rainfall is insufficient to establish vegetative cover, mulching is an effective way of conserving moisture, preventing surface crusting, reducing IDEQ Storm Water Best Management Practices Catalog September 2005 38 runoff and erosion, and helping to establish vegetation. It is a critical treatment on sites with erosive slopes. Limitations Drainage area — N/A Maximum slope — 5% Minimum bedrock depth — N/A Minimum water table - N/A NRCS soil type — N/A Freeze/thaw — N/A Drainage/flood control — no Vegetative measures may not be practical during dry periods unless a reliable supply of establishment water is available. Other methods should be stipulated in the project contract to ensure that dust control is not overlooked. Barriers (such as walls or fences) can be part of the long-term dust control strategy in and and semiarid areas, but they are not a substitute for permanent stabilization. Targeted Sediment Pollutants Trace Metals Hydrocarbons Design Dust Prevention: The best method of controlling dust is to prevent dust Parameters production. This can best be accomplished by limiting the amount of bare soil exposed at one time. In project design, identify all areas where ground disturbance will not be allowed. Design and locate haul roads, detours, and staging areas to avoid Lumecessary exposure of bare ground and avoid using areas that are the most susceptible to wind erosion. In the stormwater site plan, specify staging or work sequencing techniques that minimize the risk of wind erosion from bare soil. In most cases, this will require a change from traditional construction techniques that allow large areas to be disturbed at the outset of construction and to remain exposed for long periods of time. Vegetative Cover: Follow recommended seeding and planting specifications. If site conditions are favorable, use an extended seeding season to ensure that seeding becomes established over as much of the project as possible before winter shutdown or substantial completion. Specify the use of establishment water to accelerate vegetative stabilization if other means of long-term slope protection are not feasible. Mulch: Apply according to the design parameter for BMP 16- Hydromulching. Sprinkling: Apply at a rate of 3 gallons per acre so that the soil is wet but not saturated or muddy and so that no dust is being generated. Stone: At ingress/egress to public highways, apply as indicated in BMP 5- Stabilization of Construction Entrance. For detours, haul roads, or temporary traffic routes through the construction site, provide a layer of fractured stone 2 IDEQ Storm Water Best Management Practices Catalog 39 September 2005 to 4 in. thick and 1 to 2 in. in diameter. Surface Roughening: Tilling or discing should leave 6 in. (minimum) furrows, preferably perpendicular to the prevailing wind direction, to gain the greatest reduction in wind erosion. If the surface cannot be furrowed perpendicular to the prevailing wind direction, roughening the surface by using a ripper/scarifier (grader) or a ripper (cat) will produce the desired result of a 6 in, irregular surface. Barriers: A wind barrier generally protects soil downwind for a distance of 10 times the height of the barrier. If additional protection is needed, use other methods in conjunction with the barrier. Construction Site Assessment: Assess the potential problem of wind erosion and dust Guidelines generation at the project site. Consider the soil type, prevailing wind direction, and the effect of other prescribed erosion control measures. Use Preventive Strategies Wherever Possible: ■ Minimize amount of bare ground exposed at one time. ■ Minimize amount of ground disturbance occurring when wind erosion is highest. Implement Dust Control Measures as Needed: ■ Provide stabilized roadway to minimize amount of dust generated by construction vehicles and highway traffic (gravel, pave, or moisten the bare areas of the highway or detour route). ■ Apply protective materials to exposed areas (e.g., stone, mulch, adhesive/ emulsions). ■ Install barriers to prevent dust from blowing off site. ■ Establish vegetation at the earliest possible opportunity (using establishment water if necessary to ensure viability). ■ Keep haul roads, detours, and other bare areas moist by sprinkling them with water. ■ Perform street sweeping, as needed. Maintenance Dust control requires constant attention: it is not a one-time or once -in - awhile activity. Dust control sprinkling may have to be done several times a day during hot, dry weather. ■ Areas protected by mulch, adhesive emulsions, or barriers need to be checked at regular intervals according to the inspection schedule set forth in the stormwater plan. Remove sediments that accumulate behind any sediment fence or barrier when the accumulation reaches one half the height of the barrier. Dispose of the sediments only in an approved location (not in wetlands or where they will contribute to pollution at the disposal site). Apply chemical controls (emulsions and resins) at the manufacturer's specified rates and in accordance with all federal, state, and local regulations governing their use. Chemical products should be stored, handled, and disposed of in t policies IDEQ Storm Water Best Management Practices Catalog 40 September 2005 Cover for Materials and Equipment BMP 8 Description This BMP includes partial or total physical enclosure of materials, equipment, process operations, or activities. Covering prevents stormwater from coming into contact with potential pollutants and reduces material loss from wind blowing. Tarpaulins, plastic sheeting, roofs, buildings, and other enclosures are examples of covering that are effective in preventing stormwater pollution. Covering can be temporary or permanent. Applications Covering is a simple, effective, and usually inexpensive way of reducing or preventing pollution. It is appropriate for outdoor material storage piles, such as stockpiles of dry materials, topsoil, spoils piles, gravel, sand, compost, sawdust, wood chips, and building materials. It is also effective where containers of liquids or solids are stored or transferred. Although it may be too expensive to cover or enclose all construction activities, the high -risk parts of a site can often be separated and covered. For example, chemical preparation areas, vehicle maintenance and washing areas, storage areas for chemically treated products and toxic wastes (e.g., used oils). Limitations Drainage area — N/A Maximum slope — N/A Minimum bedrock depth — N/A Minimum water table — N/A NRCS soil type — N/A Freeze/thaw — N/A Drainage/flood control — no Covering alone may not protect exposed materials from contact with stormwater runoff/run-on. Requires frequent inspections. Consider curbing or an elevated platform to prevent pollution from run-on water. Targeted Sediment Pollutants Trace Metals Hydrocarbons Design In selecting an appropriate covering, evaluate the strength and longevity Parameters of the covering, as well as its compatibility with the materials or items being enclosed. Cost, aesthetics, weather conditions, drainage patterns, and size of the stockpiles or storage area are other factors affecting the choice of covering. ■ In designing a covering for materials, remember to provide adequate access for loading, handling, and transfer. Cost considerations may justify a less -than -optimum access arrangement in some cases. For instance, tarpaulins and plastic sheeting have to be removed or rearranged to allow continued access as materials are depleted, but they are less expensive than a permanent structure such as a roof or shed. ■ Climate or weather conditions also influence the choice or design of a IDEQ Storm Water Best Management Practices Catalog 41 September 2005 extremely windy areas. Where a permanent structure is indicated for a particular area or activity, consider building a roof instead of a complete enclosure. This will reduce costs and may also eliminate the need for ventilation and lighting systems that could be needed in a building. Consider the nature of the materials being enclosed, especially if they pose environmental or safety dangers. Materials that are biological, flanunable, explosive, or chemically reactive require special ventilation and temperature control measures. Covering alone may not protect exposed materials from stormwater contact. Where stormwater run. -on is a potential problem, place the material on an elevated, impermeable surface or build curbing around the outside of the materials to prevent pollution of stormwater from adjacent areas. Construction Tarpaulins and Plastic Sheeting: Obtain enough fabric or sheeting to cover Guidelines the indicated volume or area. Anchor the edges of the covering with stakes, tie - down ropes, large rocks, tires, or other readily available, heavy objects. Maintain an overlap of 3 ft along the borders and securely anchor the overlap area so that it does not separate (through wind or other causes). Roofs, Sheds, and Buildings: Construct according to plans or drawings in accordance with existing building codes and departmental standards for such construction. Maintenance Frequently inspect coverings for damage and general wear. Repair or replace them immediately, as needed. IDEQ Storm Water Best Management Practices Catalog 42 September 2005 Stockpile Management BMP 9 Description Stockpile management procedures and practices are designed to reduce or eliminate air and stormwater pollution from stockpiles of soil, paving materials such as Portland cement concrete (PCC) rubble, asphalt concrete (AC), asphalt concrete rubble, aggregate base, aggregate sub base or pre -mixed aggregate, asphalt minder (so called "cold mix" asphalt), and pressure -treated wood. Applications Implement in all projects that stockpile soil and other materials. Limitations Drainage area — N/A Maximum slope — N/A Minimum bedrock depth - N/A Minimum water table - N/A NRCS soil type — N/A Freeze/thaw — good Drainage/flood control — no Targeted Sediment Pollutants Construction General Guidelines • Locate stockpiles a minimum of 50 ft away from concentrated flows of stormwater, drainage courses, and inlets. ■ Protect all stockpiles from stormwater run-on using a temporary perimeter sediment barrier such as berms, dikes, fiber rolls, silt fences, sandbags, or gravel bags. ■ Implement wind erosion control practices as appropriate on all stockpiled material. ■ Place bagged materials on pallets and under cover. Protection of Non -Active Stockpiles ■ Soil stockpiles: During the rainy season, soil stockpiles should be covered or protected with soil stabilization measures and a temporary perimeter sediment barrier at all times. During the non -rainy season, soil stockpiles should be covered or protected with a temporary perimeter sediment barrier prior to the onset of precipitation. ■ Stockpiles of PCC rubble, AC, asphalt concrete rubble, aggregate base, or aggregate sub base: During the rainy season, the stockpiles should be covered or protected with a temporary sediment perimeter barrier at all times. During the non -rainy season, the stockpiles should be covered or protected with a temporary perimeter sediment barrier prior to the onset of precipitation. ■ Stockpiles of "cold mix": During the rainy season, cold mix stockpiles should be placed on and covered with plastic or comparable material at all times. During the non -rainy season, cold mix stockpiles should be placed on and covered with plastic or comparable materials prior to the onset of precipitation. • Stockpilesistorage of pressure -treated wood: During the rainy season, pressure -treated wood should be covered with plastic or co=arable IDEQ Storm Water Best Management Practices Catalog 43 September 2005 material at all times. During the non -rainy season, pressure -treated wood should be covered with plastic or comparable material at all times. Protection of Active Stockpiles ■ All stockpiles should be protected with a temporary linear sediment barrier prior to the onset of precipitation. ■ Stockpiles of "cold mix" should be placed on and covered with plastic or comparable material prior to the onset of precipitation. Maintenance Inspect and verify that BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are underway, inspect weekly during the rainy season and at 2-week intervals in the non -rainy season to verify continued BMP implementation. ■ Repair and/or replace perimeter controls and covers as needed to keep them functioning properly. IDEQ Storm Water Best Management Practices Catalog 44 September 2005 Spill Prevention and Control BMP 10 Description This BMP describes methods of minimizing exposure of pollutants to stormwater runoff by enclosing any drips, overflows, leaks, and other liquid material releases or by isolating pollutant spills from stormwater runoff. There are numerous spill containment methods, ranging from large structural barriers to simple, small drip pans. The benefits vary based on cost, maintenance requirements, and the size of spill control. Three possible options are discussed below: Containment Diking: Temporary or permanent polyurethane or plastic berms, concrete berms, or retaining walls designed to hold spills. Diking is one of the best protective measures against stormwater pollution because it surrounds the area of concern and holds the spill, keeping spill materials separated from the stormwater outside of the diked area. Diking is one of the most common types of spill containment. Also see BMP 41-Earth Dike and BMP 43-Temporary Berms. Curbing: Like containment diking, curbing is a barrier that surrounds an area of concern. It prevents spills or leaks from being released to the environment by routing runoff to treatment or control areas. The terns "curbing" and "diking" are sometimes used interchangeably, but curbing is usually small scale and cannot contain large spills like diking can. As with diking, common materials for curbing include earth, concrete, synthetic materials, metal, or other impenetrable materials. Asphalt is also a cominon material used in curbing. Drip Pans: Pans used to contain very small volumes of leaks, drips, and spills. Drip pans can be depressions in concrete, asphalt, or other impenetrable materials, or they can be made of metals, plastic, or any material that does not react with the dripped chemicals. Empty or discarded containers may be used as drip pans. Catch drips so that the materials or chemicals can be cleaned up easily or recycled before they can contact stormwater. Drip pans can be a temporary or permanent measure. Applications Containment Diking: Diking can be used at any construction site, but it is most commonly used for controlling large spills or releases from liquid storage areas and liquid transfer areas. It is an effective containment method around tank truck loading and unloading areas. Proper diking contains spills, leaks, and other releases and prevents them from flowing into runoff conveyances, nearby streams, or infiltration into groundwater. It also allows for proper disposal and/or recycling of materials captured within the dike. Curbing: Curbing is usually small scale; it cannot contain large spills like diking can. However, many facilities use curbing to contain small areas used for handling and transferring liquid materials. IDEQ Storm Water Best Management Practices Catalog 45 September 2005 provides excellent control of run-on. As with diking, materials spilled within a curbed area can be collected for proper disposal and/or recycling. Drip Pans: Drip pans can be used at any site where valves and piping are present and the potential for small -volume leakage and dripping exist. Although leaks and drips should be repaired and eliminated as part of preventive maintenance programs, drip pans can provide a temporary solution where repair or replacement should be delayed. In addition, drip pans can be an added safeguard when they are positioned beneath areas where leaks and drips may occur. Drip pans are inexpensive, easy to install, and simple to operate. They allow for reuse or recycling of the collected material. Limitations Drainage area - N/A Maximum slope — N/A Minimum bedrock depth — N/A Minimum water table — N/A NRCS soil type - N/A Freeze/thaw — N/A Drainage/flood control — no Containment Diking: ■ May be too expensive for some smaller facilities. ■ Requires maintenance. • Could collect polluted stormwater, with possible infiltration to ground water. Curbing: ■ Not effective for holding large spills. • May require more maintenance than diking. Drip Pans: ■ Suitable only for small volumes. • Should be inspected and cleaned frequently. • Should be secured during poor weather conditions. • Requires that personnel be trained in proper disposal methods so that contents are not disposed of improperly. Targeted Trace Metals Pollutants Hydrocarbons Design Containment Diking: Parameters Size: For tank truck loading and unloading operations, the diked area should be capable of holding an amount equal to any single tank truck compartment. Materials: Materials used to construct the dike should be strong enough to safely hold spilled materials. The materials used usually depend on what is available on -site and the substance to be contained. Dikes may be made of earth (i.e., soil or clay), concrete, synthetic materials (liners), metal, or other impervious materials. Containment dikes may need to be designed with IDEQ Storm Water Best Management Practices Catalog September 2005 46 water, and ground water supplies. In general, strong acids and bases may react with metal containers, concrete, and some plastics. So where spills may consist of these substances, other alternatives should be considered. Some of the more reactive organic chemicals may also need to be contained with special liners. If uncertain about the suitability of certain dike construction materials, refer to the Material Safety Data Sheet (MSDS) for the chemical being contained. Curbing: When using curbing for runoff control, protect the berm by limiting traffic and installing reinforced berms in areas of concern. Materials spilled within a curbed area can be tracked outside of that area when personnel and equipment leave the area. This tracking can be minimized by grading within the curbing to direct the spilled materials to a downslope side of the curbed area. This will keep the materials away from personnel and equipment that pass through the area. It will also allow the materials to accumulate in one area, making cleanup much easier. Manual or mechanical methods, such as those provided by surnp systems, can be used to remove accumulated material from a curbed area. Drip Pans: When using drip pans, consider local weather conditions, the location of the drip pans, materials used for the drip pans, and how the pans will be cleaned. The location of the drip pan is important. Because drip pans should be inspected and cleaned frequently, they should be easy to reach and remove. Take special care to avoid placing drip pans in precarious positions such as next to walkways or on an uneven surface. Drip pans in these locations are easily overturned and may present a safety or environmental hazard. Weather is also an important factor. Heavy winds and rainfall can move or damage drip pans because the pans are small and lightweight. To prevent this, secure the pans by installing or anchoring them. Drip pans may be placed on platforms or behind wind blocks or may be tied down. Maintenance Cleaning guidelines should be included in the maintenance plan for all methods of spill prevention and control. Containment Diking: Inspect containment dikes during or after significant storms or spills to check for washouts or overflows. In addition, regular testing to ensure that dikes are capable of holding spills is reconunended. Soil dikes may need to be inspected on a more frequent basis. Changes in vegetation, inability of the structure to retain stormwater, dike erosion, or soggy areas indicate problems with the dike's structure. Damaged areas should be patched and stabilized immediately, where necessary. Earthen dikes may require special maintenance of vegetation, such as mowing and irrigation. When evaluating the performance of the containment system, pay special attention to the overflow system, since it is often the source of uncontrolled Jenks If nvPrflnw c)4ctPmc do not ,xi.-,t arrumnl9ted c1nnnw,,1tPr chnnlri he IDEQ Storm Water Best Management Practices Catalog 47 September 2005 released periodically. Polluted stormwater should be treated prior to release. Mechanical parts (such as pumps) or manual systems (slide gates, stopcock valves) may require regular cleaning and maintenance. Curbing: Since curbing is sized to contain small spill volumes, frequent maintenance is needed to prevent overflow of any spilled materials. Inspect all curbed areas regularly and clean clogging debris. Repair the curb by patching or replacing it as needed to ensure effective functioning. Inspections should be conducted before forecasted rainfall events and immediately after storm events. If spilled or leaked materials are observed, cleanup should start immediately to allow space for future spills. In addition, prompt cleanup of spilled materials will prevent dilution by rainwater, which can adversely affect recycling opportunities. Drip Pans: For drip pans to be effective, site operators should pay attention to the pans and empty them when they are nearly full. Because of their small holding capacities, drip pans will easily overflow if not emptied. Also, recycling efforts can be affected if stormwater accumulates in drip pans and dilutes the spilled material. It is important to have clearly specified and easily followed practices of reuse, recycle and/or disposal, especially the disposal of hazardous materials. Consider dumping the drip pan contents into a nearby larger -volume storage container and periodically recycling the contents of the storage container. Frequent inspection of the drip pans is necessary due to the possibility of leaks in the pan itself. Also check for random leaking of piping or valves and for irregular, slow drips that may increase in volume. Conduct inspections before forecasted rainfall events to remove accumulated materials. Empty accumulations inunediately after each storm event. IDEQ Storm Water Best Management Practices Catalog 48 September 2005 Vehicle/Equipment Washing & Maintenance BMP 11 Description A typical vehicle/equipment washing and maintenance system is a lined, depressed area that collects the water used in washing off the trucks, cars, or other construction vehicles/equipment, and drains the wastewater into a collection or treatment system. Applications A wash -down area is used on projects where the soil is silty or heavy in clay, and has the likelihood of transporting dirt and mud off site. Projects that will take place over the course of the rainy season and areas where water is expected to be encountered (high ground water table) in the normal course of the project should be considered as candidates. Limitations Drainage area - N/A Maximum slope — 5% Minimum bedrock depth — N/A Minimum water table - N/A NRCS soil type - N/A Freeze/thaw — N/A Drainage/flood control — no Washing vehicles generates liquid, semi -solid, and solid wastes. These wastes should be contained on -site or treated to prevent pollution of surface and ground water. Off -site: Treatment is required for all discharges to waters of the state since it could be contaminated with degreasers, hydrofluoric acid, hydrochloric acid, nitric acid, phosphoric acid, oil, hydraulic fluids, lubrication, and engine cleaning solvents. Waters of the state include all surface waters (canals, rivers, ponds, streams and lakes), and all ground water. Contact the local permitting authority to determine proper treatment and disposal methods. On -site: If wash -water discharge to a sediment pond is the system of choice, sufficient acreage is required for the operation. Targeted Sediment Pollutants Phosphorus Trace Metals Hydrocarbons Design ■ Detergents used on site in Idaho for vehicle washing should not contain Parameters phosphates. Phosphates are a plant nutrient that can cause excessive growth of aquatic plants when discharged into a stream or lake. ■ A stabilized construction entrance (BMP 5), used to reduce off -site tracking of mud, dirt and rocks, should be installed at the vehicle wash/maintenance area. Washing and maintenance should be conducted in disturbed areas (staging areas) but should not be conducted in a cut or fill area until grading has been performed or where there will be a high volume of construction traffic. Highly erodible soils or frequently wet etra sl39ttlr lie -Voided IDEQ Storm Water Best Management Practices Catalog 49 September 2005 Off -site discharge options: ■ Lagoon: Pond -like structure that works on the principle of evaporation is easy to install and requires low maintenance. There is a need to be aware of safety issues (fencing the area from the public). ■ Land application system: Large land area is required. This alternative is the lowest in out-of-pocket cost. ■ Filtering and recycling of wash water: A good option for conservation measures. Initially, expense would be high. Monitoring of the operation would be more intensive. ■ Municipal wastewater treatment plant: This option is available only in areas where a municipal wastewater treatment plant exists and the operation is capable of handling the load. This is the best option for limiting liability for larger construction projects. Construction Designate an area that can be graded and bermed. The design should collect Guidelines wastewater for evaporation or direct it to an off -site containment or treatment system. A lined pond should be used where pollutants such as oil, grease, fuels, etc., may reach the high -ground water table. Maintenance Check that the system controls are working as designed. Clean up sediments that have been tracked by vehicles onto nearby roadways. IDEA Storm Water Best Management Practices Catalog 50 September 2005 Waste Management Description This BMP entails meeting the regulatory requirements of hazardous waste management that includes hazardous waste determination; acquiring an EPA identification number; accumulation; record keeping reporting; and transportation manifesting. Good housekeeping will minimize the contribution of pollutants to stormwater discharges by handling and storing hazardous materials on site in a clean and orderly manner. Applications Compliance with applicable regulations will protect human health and the environment from hazardous waste generated by construction activities, reduce liability, and prevent unnecessary interruptions to schedules (i.e., project shut down due to environmental investigations/enforcement actions). The first step in preventing pollution of stormwater runoff is to maintain a clean and orderly work environment. This will reduce the possibility of accidental spills. Common sense is the simplest and most inexpensive method to utilize. Improving the operation and maintenance of industrial machinery, material storage practices, material inventory controls, routine and regular clean-up, maintenance activities in work areas, and providing educational programs for employees regarding these practices will assist in reaching these goals. Limitations Drainage area - N/A Maximum slope — N/A Minimum bedrock depth - N/A Minimum water table - N/A NRCS soil type - N/A Freeze/thaw — N/A Drainage/flood control — no Carelessness and poor judgment often result in problems associated with the disposal of hazardous materials. Not being fully aware of all the hazards at the site could increase the potential for mishandling of such wastes, resulting in stormwater contamination. Targeted Sediment Pollutants Trace Metals Design Select a designated waste collection area on site. Secure an adequate number Parameters of containers with lids or covers. If possible, provide a covered area or spill containment pallets. Arrange for waste collection before containers overflow (additional containers and more frequent pick-ups will be needed during the demolition phase). Provide immediate cleanup in case of a spill. Assure that waste is transported and disposed of at an approved facility. A liner, concrete pad, berm, etc., should be utilized to keep waste separated and to contain accidental spills so that stormwater runoff is not polluted. Provide labels and signs for the area to educate contractors about proper storage and handling and to comply with regulatory requirements. IDEQ Storm Water Best Management Practices Catalog 51 September 2005 Construction The best way to avoid polluting runoff from outside material storage areas is to Guidelines prevent stormwater run-on or rain from coming in contact with the materials. These are some of the methods that can be utilized to accomplish this: ■ Identify, control, and enforce storage and disposal/stockpile areas ■ Provide a barrier such as a liner, concrete pad or berm ■ Protect the storage area by: ✓ Storing the material indoors ✓ Covering the area with a roof ✓ Covering the material with a temporary covering ■ Engineer safeguards such as: ✓ Overflow protection devices ✓ Protective guards around tanks, storage area, etc. Maintenance n Regularly pick up and dispose of all garbage and waste material. ■ Make sure equipment is working properly. ■ Routinely inspect for leaks or conditions that could lead to discharges of chemicals and contact with stormwater: ✓ External corrosion and structural failure ✓ Installation problems ✓ Evidence of spills or overfills ■ Locate storage areas away from direct traffic routes. ■ Stack according to directions to avoid damage due to improper weight distribution. ■ Store likes together, separate incompatible wastes. ■ Assign hazardous material inventory to a limited number of people. ■ Keep up-to-date inventory of all hazardous materials and wastes. ■ Identify all chemical substances present at the work site. ■ Label all containers with name, hazards, handling, and first -aid information. ■ Mark those that require special instructions. ■ Cleanup of liquid or dry material spills. ■ Provide initial and annual training for employees on the hazards and the proper handling procedures. ■ Do not mix products together unless specifically recommended. ■ Use the entire product before disposing of container. ■ Do not remove original product label from container. IDEQ Storm Water Best Management Practices Catalog 52 September 2005 Concrete Waste Management BMP 13 Description Prevent or reduce the discharge of pollutants to stonnwater from concrete waste by conducting off -site washout, performing on -site washout in a designated area, and training employees and subcontractors. Applications Concrete pours, such as foundation, footing or pile sites Limitations Drainage area — N/A Maximum slope — N/A Minimum bedrock depth - N/A Minimum water table - N/A NRCS soil type - BCD Freeze/thaw — good Drainage/flood control — no Off -site washout of concrete wastes may not always be possible. Targeted Concrete waste Pollutants Construction The following practices will help reduce stonnwater pollution from concrete Guidelines wastes: ■ Avoid mixing excess amounts of fresh concrete or cement on site. ■ Perform washout of concrete trucks off site or in designated areas only. ■ Do not wash out concrete trucks into storm drains, open ditches, streets, or streams. ■ Avoid dumping excess concrete in non -designated dumping areas. For on -site washout: ■ Locate washout area at least 50 ft from storm drains, open ditches, or water bodies. Construct a temporary pit or bermed area with a paved or gravel approach to capture liquid and solid waste. ■ Wash out wastes into the temporary pit where the concrete can set, be broken up, and then disposed of properly. ■ When washing concrete to remove fine particles and expose the aggregate, drain the water to a benued or level area. ■ Avoid washing sweepings from exposed aggregate concrete into the street or storm drain. Collect and return sweepings to aggregate base stockpile or dispose in the trash. ■ Train employees and subcontractors in proper concrete waste management. Maintenance ■ Inspect subcontractors to ensure that concrete wastes are being properly managed. ■ If using a temporary pit, dispose hardened concrete on a regular basis. IDEQ Storm Water Best Management Practices Catalog 53 September 2005 Sanitary/Septic Waste Management BMP 14 Description Prevent the discharge of pollutants to storinwater from sanitary/septic waste by providing convenient, well -maintained facilities, and arranging for regular service and disposal. Applications All construction sites where portable facilities are used. Limitations Drainage area — N/A Maximum slope — N/A Minimum bedrock depth - N/A Minimum water table - N/A NRCS soil type - N/A Freeze/thaw — N/A Drainage/flood control — N/A No major limitations. Targeted Nutrients Pollutants Bacteria Approach Sanitary and septic wastes should be disposed of in accordance with state and local requirements. Some of these requirements are listed below: ■ Locate sanitary facilities in a convenient location. ■ Avoid discharging or burying untreated raw wastewater. ■ Ensure that temporary septic systems treat wastes to appropriate levels before discharging. ■ If using an on -site disposal system (OSDS) such as a septic system, comply with local health agency requirements. ■ Ensure that temporary sanitary facilities that discharge to the sanitary sewer system are properly connected. This practice will help eliminate illicit discharges. ■ If discharging to the sanitary sewer, contact the local wastewater treatment plant for their requirements. ■ Ensure that a licensed service maintains sanitary/septic facilities in good working order. ■ Portable units may need to be staked or secured to a fixed object. Maintenance ■ Inspect facilities regularly. ■ Arrange for regular waste collection. IDEQ Storm Water Best Management Practices Catalog 54 September 2005 Topsoiling Description Topsoiling is the placement of topsoil or other suitable plant growth material over disturbed lands to provide a suitable soil medium for vegetative growth and a supply of native or locally occurring seeds and propagules. Topsoiling may involve bringing in soils from off site or merely replacing fertile topsoil that was stripped and stockpiled during earlier site development activities. Applications Topsoiling is recormnended on slopes 2:1 or flatter where the native soil is unsuitable for vegetative growth. It is an effective way of improving plant establislunent on sites where moisture, nutrients, or pH levels are low, or where the remaining soil is too shallow to support root systems. Limitations Drainage area — unlimited Maximum slope — 50% Minimum bedrock depth — 3 ft Minimum water table — 2 ft NRCS soil type — N/A Freeze/thaw — fair Drainage/flood control — no Be careful not to apply topsoil over a subsoil of contrasting texture. For instance, clay -like topsoil placed over a sandy soil may cause the topsoil to slough as water flows between the two soil layers of different permeability. Also, topsoil should not be applied when the subsoil is frozen or extremely wet. Targeted Sediment Pollutants Design Plan to maintain the existing or established grade of the subsoil. The topsoil Parameters should be uniformly distributed at a minimum compacted depth of 2 in. on slopes 3:1 or steeper, and 4 in. deep on flatter slopes. The soil should be a loam, sandy loam, clay loam, silt loam, sandy clay loam, or other mixture approved by an agronomist. It should be free of subsoil, refuse, sticks, noxious weed seeds, other extraneous materials, and stones larger than 1.5 in. diameter. Topsoil can either be obtained commercially or stripped, stockpiled, and replaced on the construction site. Stockpiled topsoil should undergo a laboratory analysis to determine organic content, pH, and soluble salts. A pH of 6.0 to 7.5 and organic content of not less than 1.5% by weight is recorrAnended. Where soil pH is less than 6.0, lime may be applied to adjust pH to 6.5 or higher. Any soils having soluble salt content greater than 500 parts per million should not be used. If desired, it is possible to place a thin layer of topsoil 1.2 to 2 in. thick on benched slopes. In such applications, it is important not to apply so much topsoil that the value of the benches is destroyed. This method is especially valuable on rocky benches, especially on south- or west -facing slopes, however, proper placement of the soil is often a problem. In some cases, soil IDEQ Storm Water Best Management Practices Catalog 71 September 2005 quantity is hard to control. Soil can also be blown onto the slope using a snow blower. In that case, organic matter can be mixed with the soil, but the soil should be screened to remove any rocks larger than 2 in.. The advantage is that the amount of soil needed is much less and it can be spread very rapidly on the horizontal surfaces. The soil may need some form of stabilization before the next rain event. Consider whether mulch, matting, geotextiles or seeding is required and when. Construction The following guidelines apply to the placement of topsoil: Guidelines • The existing or established grade of subsoil should be maintained. ■ Lime may be uniformly applied over designated areas where subsoil is highly acidic or heavy in clay content. ■ Prior to spreading topsoil, loosen the subgrade by discing (or other method) to a depth of 2 in. to permit bonding of subsoil to topsoil. Tracking a bulldozer vertically over the slope will pack the soil and create horizontal erosion check slots to prevent topsoil from sliding down the slope. ■ Spread the topsoil uniformly at a minimum compacted depth of 2 in. on 1:3 or steeper slopes and 4 in. on flatter slopes. A depth of 6 to 12 in. is preferred. Any surface irregularities should be corrected in an effort to prevent formation of water -holding depressions. ■ Where quantities of stockpiled topsoil on site are limited, it is more desirable to cover all areas of exposed subsoil to a lesser depth than to cover partial areas to the suggested minimum depth of 3.1 in.. ■ Topsoil should not be placed when the subgrade is frozen, excessively wet, or in a condition that may otherwise be detrimental to proper grading or proposed sodding or vegetation establishment. Maintenance Periodically and after major storm events, inspect, repair, and reseed as necessary to control slope erosion and subsequent topsoil losses. IDEQ Storm Water Best Management Practices Catalog 72 September 2005 T z r �JI TRAPEZOIDAL CROSS- SEC:�GN cm �f r PARABOLIC CROSS-ScrTC7N CONSTRUCTEON SPECIFICATIONS I ALL TREES. BRusm. STUMPS, OBSTRUCTIONS ANO OTHER OB.IECT1ONQL MATERIAL SHALL EE REMOVED AND DISPOSED OF SO AS NOT TO WTERFERE WITH THE PROPER PJNC-IONING OF THE WATERWAY, 2 THE WATERWAY SHALL SE EXCAVATEO OR SHAPx'0 TO UNE. GPLADE AND CROSS SECTION AS RECUIRED TO MEET I)AE CRITERIA SPECIFIED HEREIN, AND BE FREE OF BANK PgOJF-C.IONS OR OTTER (RRECULARITL S WHICH WILL. IMPEDE NORMAL FLOW- 3 FILLS SHALL SE COMPACTED AS NE40ED T`O PREVENT UNEQUAL 5 t E LEMENT THAT WOULD CAUSE DAMAGE IN THE COMPLETE WATERWAY, A ALL EARTH REUCVED ANO NOT NEEDED IN CONSMUCMCN SHALL SE SPREAD OR DISPOSED OF SO THAT IT WILL NOT INTERPERE WITH THE PUNCTICNING OF THE wAT1=.RWAY. 5 STABILIZAi7ON SHALL HE GONE ACCORDING TO THE APPROPRIATE 'STANCAPQ ANQ C.: =CP VEGE AINE PRACTICES". A FOR DESIGN YELOOTIES OF LI'.SS THAN 3.5 ft. per set.. SEEDING ANO )AULCHiNG mAY 3E USED FOR THE ESTABLISHME'vr OF THE VEGCIATION. IT IS RECOMME;NOEU THAT, WHEN CCNOITIONS PERMIT, TEMPORARY DIVErREIONS OR OTHER MEANS SHOULD BE USED rO PP� , A ENTERING i`}iC WATERWAY DURING THE ESTASUS -MENT OF THE VEGE ATIC_'l . B FOR DESIGN VELOCITIES OF MORE THAN 3.5 R, per snc., THE. WATERWAY S;4ALL BE S.ABILIcED WIT}.I S00_ WITH SEEDING PROTECTED 8Y JUtE. OR EXCELSIOR MATTING OR WITH SEEDING ;qNc MULCHING rK_' UCIING T£.IIPORARY OfVERSION OF THE WATER UNTIL THE VECE A:cC-" + 'S C STRUCTURAL — VEGET'ATO/E PROTECTION ( 1) SUBSURFACE 0RAW FOR Vic" FL()w SHALL EE CONSTRUCrEO .LS SHCWN flN THE: srANOAR ORAWING AND AS SPECIFIED IN THE "STANDARD AND SaECiFiG:iiONS FOR S; 9SI,:RFAt;� op'aIN", GN STANDARD SYMBOL U.S. DE.PART,VENT OF ACPICULiURE SOIL coNsERVA;IoN SERVICEsEAi�tt~"r�r!O►cw GRASSED WATERWAY o��w�N� TOO 7- MAN--ORTON ENGINEERING COMANY SCISE, IDA14C McC,;I.L. IDAHO GW-1 TRAPEZOIDAL CROSS- SEC:�GN cm �f r PARABOLIC CROSS-ScrTC7N CONSTRUCTEON SPECIFICATIONS I ALL TREES. BRusm. STUMPS, OBSTRUCTIONS ANO OTHER OB.IECT1ONQL MATERIAL SHALL EE REMOVED AND DISPOSED OF SO AS NOT TO WTERFERE WITH THE PROPER PJNC-IONING OF THE WATERWAY, 2 THE WATERWAY SHALL SE EXCAVATEO OR SHAPx'0 TO UNE. GPLADE AND CROSS SECTION AS RECUIRED TO MEET I)AE CRITERIA SPECIFIED HEREIN, AND BE FREE OF BANK PgOJF-C.IONS OR OTTER (RRECULARITL S WHICH WILL. IMPEDE NORMAL FLOW- 3 FILLS SHALL SE COMPACTED AS NE40ED T`O PREVENT UNEQUAL 5 t E LEMENT THAT WOULD CAUSE DAMAGE IN THE COMPLETE WATERWAY, A ALL EARTH REUCVED ANO NOT NEEDED IN CONSMUCMCN SHALL SE SPREAD OR DISPOSED OF SO THAT IT WILL NOT INTERPERE WITH THE PUNCTICNING OF THE wAT1=.RWAY. 5 STABILIZAi7ON SHALL HE GONE ACCORDING TO THE APPROPRIATE 'STANCAPQ ANQ C.: =CP VEGE AINE PRACTICES". A FOR DESIGN YELOOTIES OF LI'.SS THAN 3.5 ft. per set.. SEEDING ANO )AULCHiNG mAY 3E USED FOR THE ESTABLISHME'vr OF THE VEGCIATION. IT IS RECOMME;NOEU THAT, WHEN CCNOITIONS PERMIT, TEMPORARY DIVErREIONS OR OTHER MEANS SHOULD BE USED rO PP� , A ENTERING i`}iC WATERWAY DURING THE ESTASUS -MENT OF THE VEGE ATIC_'l . B FOR DESIGN VELOCITIES OF MORE THAN 3.5 R, per snc., THE. WATERWAY S;4ALL BE S.ABILIcED WIT}.I S00_ WITH SEEDING PROTECTED 8Y JUtE. OR EXCELSIOR MATTING OR WITH SEEDING ;qNc MULCHING rK_' UCIING T£.IIPORARY OfVERSION OF THE WATER UNTIL THE VECE A:cC-" + 'S C STRUCTURAL — VEGET'ATO/E PROTECTION ( 1) SUBSURFACE 0RAW FOR Vic" FL()w SHALL EE CONSTRUCrEO .LS SHCWN flN THE: srANOAR ORAWING AND AS SPECIFIED IN THE "STANDARD AND SaECiFiG:iiONS FOR S; 9SI,:RFAt;� op'aIN", GN STANDARD SYMBOL U.S. DE.PART,VENT OF ACPICULiURE SOIL coNsERVA;IoN SERVICEsEAi�tt~"r�r!O►cw GRASSED WATERWAY o��w�N� TOO 7- MAN--ORTON ENGINEERING COMANY SCISE, IDA14C McC,;I.L. IDAHO GW-1 FREEBOARD r z f b I WIDTH TRAPEZOIDAL CROSS-SECT[ON T PARABOUC CROS-3--s; CTIC CONSTRUCTION SPECIFICATIONS I ALL, TREES. BRUSH. STUMPS. OBSTRUCTIONS AND OTHER OELIECTIONABLE MATERIAL SHALL BE RDAGVEID AND OISPOSED OF 50 AS Nor TO INTERFERE YR H THE PROPER FUNCTIONING OF THE DIVERSION. 2 THE DIVERSION SHALL 6E EXCAVATM OR SHAPED TO LINE. GRAOE AND CROSS SECTION AS REOUtRED TO MEET THE CRITERIA SPECIFIED HEREIN, AND BE FRE= OF BANK PROJECTION'S OR OTHER IRRECULARITIES WHICH WILL IMPEDE NORMAL FLOW. 3 FILLS SHALL BE COMPACIED AS NEEDED TO PREVENT UNEIUAL SETTLEMENT THAT WOULD CAUSE DAMAGE IN THE COMPLETED DI ERSIGN. 4 ALL EARTH REMOVEO AND NOT NEEDED IN CONSTRUCTION 514ALL BE SFREAO OR DISPOSED OF SO +HAT IT WILL NOT INTERFERE WITH THE FUNCTIONING OF a4E WErRSION. 5 STABILIZATION SHALL BE DONE ACCORDING TO THE APPROPRIATE "STANDARD AND SPECI> ICAtIONS FOR VEGETATIVE PRACTICES"'. A FOR. OESIGN VELOCITIES OF LESS 'THAN 3_5 ft, per sec., SEEDINC AND MVLCHINC MAY RE USED FOR THE ESTABLISHM&IT OF THE VEGCIAnON. IT 15 RECQM$AENUED TVAT. VaiEN CONDITIONS PERMIT, TEMPORARY 'YVE.RSIONS: OR OTHER MEANS BE USED TO PREVENT wATER FROM ENTERING THE ONERSON OURING THE ESTABLISHMENT OF THE VEGETATION. B FOR GESICN VELOCITIES OF MORE Tk N 3.5 (t. per sex.. THE DIVI-E2SION SKkLL 13E SYABIU -E D WITH SOO, WITH SE;'gINC PROTECTED BY JUTE OR EXCELSIOR UATIING OR WITH SEEDINC AND MULCHING INCLUDING TEMPpRAR'7 D VERSiON OF T`ftE WATER UNTIL i}HE VECETA7100 IS E STABLISHEG- SEE 'THIS STANDARC AND SPECIFICATIONS FOR PROTECTIVE MATERIALS'. S7ANDARO SYMBOL. U.S. DEPARTMENT OF ACRICUL.TURE STANCARO SOIL CONSERVAtION SERVICE D iVER J I Q N DRAWING TCOTHMANW-ORTON ENIG;NEE:RING COMAW GW--3 8CIS%. IDAHO McCALL. !DAHO h zf T DI -_tom-'..�►'r/rPlw ;rri►�y'" GRAVEL BEDDINC OR FiLTE-3 CLOTH, WATE, WAY WITH STONE CEiTOZ DRAIN ' V' SECTION Si+AP£.D 9Y mOTOR PATROL WA, LR WAY WITH STONE CENTER DRAW ROuNDEG SECTION SmAPED BY 6UUaOZER u.S, DEPARTMENT of AGRlCVL,URE SCNL C'014SERVATION SERVICZ TG07H. aAN -ORTCN ENGINEERING CCMANY ROUNDED SECTION WATERWAY WITH CENTER TANOARO STONE I ORAWI G RW--1 Seeding BMP 21 Description Permanent Seeding means growing a long-term or permanent vegetative cover (plants) on disturbed areas or areas that need assistance in revegetation. The purpose of permanent seeding is to reduce erosion and sedimentation and to establish desirable competitive ground cover for wildlife habitat and ease of roadside maintenance. This practice uses prescribed perennial grasses, legumes and native shrubs or wild flowers that will hold the soils, reduce stormwater runoff and act as a bio-filtering system on long-term basis. The guidelines given in this fact sheet for design, construction and maintenance can also be used to install temporary seeding on construction sites. Applications Temporary seeding should be considered as slope protection and erosion control practice for construction sites. Permanent seeding should be considered for any disturbed area where all construction or maintenance activities have ceased or been finalized and is now ready for permanent vegetative cover. Typical areas subject to permanent vegetative cover are all areas disturbed by new construction, reconstruction and maintenance, and materials source site and areas in need of revegetation. The primary advantages of seeding are: ■ It establishes good soil stabilization. ■ It prevents soil erosion and sedimentation. ■ It contains and filters stormwater runoff. Additional advantages specific to permanent seeding are: ■ It provides wildlife ground cover and habitat. ■ It competes with undesirable vegetation and noxious weeds. ■ It provides aesthetic qualities. ■ It reduces the cost of maintenance. Limitations Drainage area — unlimited Maximum slope — 5% Minimum bedrock depth — 2 ft Minimum water table — 2 ft NRCS soil type — N/A Freeze/thaw — fair Drainage/flood control — no IDEQ Storm Water Best Management Practices Catalog 73 September 2005 Permanent vegetative ground cover will take several years before sufficient establishment takes place. Establishment will occur quicker in high precipitation areas, usually over 20 in., as opposed to the and or semi -arid regions of the state. Permanent seeding should be conducted in conjunction with various forms of mulching, matting, and annual grass (cereal grain) as a nurse crop. Other factors that contribute to the success or failure of permanent seeding are: ■ Seeding should be done at the proper time of year. ■ Proper application of fertilizers as prescribed will contribute to the success of the seeding. • Once seeded, the site should not be disturbed. ■ Irrigation may have to be used in low precipitation area (arid/semi-arid) for establishment. Targeted Sediment Pollutants Phosphorus Trace metals Design Conduct all permanent seeding and fertilizing in accordance with local Parameters requirements. See Volume 4, Appendix C, Stormwater Plant Materials for additional guidelines. Construction Permanent seeding is the last phase of reclaiming any disturbed soils. Guidelines Maintenance • Inspect all seeded areas on a regular basis and after each major storm event to check for areas where corrective measures may have to be made. ■ Indicate which areas need to be reseeded or where other remedial actions are necessary to assure establishment of permanent seeding. ■ Continue monitoring of the site/area until permanent vegetation is established. IDEQ Storm Water Best Management Practices Catalog 74 September 2005 Sodding BMP 22 Description Sodding entails the placement of rolls or strips of sod as a landscape planting or erosion control measure. Sod is a layer of soil bound by grass and plant roots into a thick mat. It is commercially available in rolled strips that are laid over an area of exposed soil. Sod stabilizes the area by immediately covering the surface with vegetation and enabling stoimwater to infiltrate into the ground. Applications Sodding is appropriate for any graded or cleared area that might erode and where a permanent, long-lived plant cover is needed immediately. It can be a temporary or permanent BMP. Possible uses for sod include buffer zones, stream banks, dikes, swales, slopes, outlets, level spreaders, and filter strips. Primary advantages of sod are: ■ Provides immediate dense vegetative cover and erosion control. ■ Provides more stabilizing protection than initial seeding. ■ Generates less weed growth than seeded vegetation does. ■ Can be available for site activities (open to foot traffic) within a shorter time than can seeded vegetation. ■ Can be placed at any time of the year as long as water is available and moisture conditions in the soil are favorable. Limitations Drainage area — unlimited Maximum slope — 14% Minimum bedrock depth — 2 ft Minimum water table — 2 ft NRCS soil type — ABCD Freeze/thaw — fair Drainage/flood control — no ■ Purchase and installation costs are higher than for seeding. ■ Continued irrigation may be required if the sod is placed during dry seasons or on sandy soils. Watering may be necessary after planting and during periods of drought or intense heat. ■ Sod should not be installed during very hot or wet weather Targeted Sediment Pollutants Phosphorus Trace metals Design Materials: Use grasses that require little or no maintenance (watering or Parameters fertilizing). This may require advance planning to obtain grasses that are desirable for the location. Site preparation: The soil surface should be find graded before laying down the sod. Topsoil may be needed in areas where soil textures or conditions are inadequate (such as dense or impermeable soils). Add lime and fertilizers as needed to promote good plant growth conditions. IDEQ Storm Water Best Management Practices Catalog 75 September 2005 Slope: Do not place sod on slopes greater than 3:1 if slopes are to be mowed. If placed on steep slopes, the sod should be laid with staggered joints or be pegged down (or both). Installation methods: Sod can be applied in strips or other patterns, or alternate areas can be seeded to reduce expense. If placed on steep slopes or next to running waterways, consider placing chicken wire, jute, or other matting over the sod for extra protection against lifting. Construction • Spread and grade the topsoil (if used). Sod may be placed directly on the Guidelines ground (without topsoil) only if it has been specifically grown for sites with no topsoil. ■ Prepare the soil surface by fine -grading the surface before laying sod. Sodding should then take place immediately after the soil bed is established. ■ Lay the sod in a staggered pattern. Sod in waterways should be laid parallel to the flow. ■ Sod can be laid in strips on the contour to reduce effective slope length. ■ Roll or compact the sod immediately after installation to ensure firm contact with the underlying soil. ■ Water to a depth of 4 in., as needed. Maintenance • Inspect the sod frequently after it is first installed, especially after large storm events, until it is established as permanent cover. Remove and replace any dead sod. ■ Once the sod is established, snow the area as needed. ■ Water as often as necessary during periods of intense heat or lack of rain. ■ Sodding usually serves as both a temporary and permanent measure and, therefore, does not require removal. IDEQ Storm Water Best Management Practices Catalog 76 September 2005 �101PA ► � �woolp til l, Soltrits, w}�,�; Planting BMP 23 Description Planting is the process of establishing vegetation by setting out plants that have been grown to a specified size or age. The plants may be potted in plastic tubes or in containers of various sizes, root wrapped, or may be bare rootstock. Plantings are often specified for aesthetic purposes (landscaping) but can serve various erosion control functions as well. The living trees and shrubs in a planted area will grow large enough to provide soil stabilization and erosion control benefits sooner than the seeds of woody species can germinate and grow to effective size. The use of trees and shrubs also provides greater aesthetic and biological diversity and, in many areas, is more compatible with vegetation on lands adjoining the planted site. Also refer to Volume 4, Appendix C: Stormwater Plant Materials, for additional design guidance regarding using landscaping to maximize water quality benefits. Applications ■ Planting is the preferred method of revegetation in many situations where seeding and other slope treatments are either not effective or not appropriate as permanent measures. Such areas may include the following: ■ Any finished slope that will remain undisturbed for at least 10 years, especially if the area is bordered by forests, wetlands or other naturally occurring woody vegetation. On such sites, trees and shrubs may be the desirable vegetation from a long-term perspective, but they may be very difficult or unreliable to establish from seed. ■ Extremely rocky slopes or sites: If natural vegetation is present in significant amounts, such areas are difficult to seed and mulch effectively. Plantings can be used to provide additional stabilization. ■ Streets or materials source sites that have been abandoned permanently. ■ All types of landscaping, including urban thoroughfares, interchanges, and residential streets where landscape aesthetics are a concern. ■ Wetlands and wildlife habitat areas: in such areas, it may be critical to plant the desired species initially so that the site is not overrun by weeds or undesirable plant species that detract from the intendcd use of the site. ■ Areas where the higher rate of transpiration for trees and shrubs (compared to grasses and forbs) helps remove excess moisture from the soil. Limitations Drainage area — unlimited Maximum slope — 50% Minimum bedrock depth — 3 ft Minimum water table — 3 ft NRCS soil type — ABCD Freeze/thaw — fair Drainage/flood control — no IDEQ Storm Water Best Management Practices Catalog 77 September 2005 Purchase and installation costs are higher than for seeding. Continued or periodic irrigation may be required if planting occurs during dry season or on sandy soils. Watering may also be necessary up to 2 years after planting and during periods of drought or intense heat. Specific seasons of work apply for planting. Planting outside the designated season should not be allowed unless provisions for special care and maintenance of the plants are enforceable. Targeted Sediment Pollutants Phosphorus Trace metsls Design Advantages of Planting: Many shrubs and trees are difficult to establish from Parameters seed in natural environments and natural seed crops vary widely from year to year. Rapid invasion from native vegetation and rapid establishment of sown seed of woody species is therefore unreliable. Vegetative plantings are used to provide living shrubs and trees that will grow to adequate size to provide soil stabilization and erosion control faster than seeds of woody species can germinate and grow to these dimensions. Materials: Planted material may be grown from either cuttings or seed. At delivery to a job site, the plants may be potted (in containers), root wrapped, or bare root stock. Some species are successfully planted as sprigs or tubelings. Use of Native Species: If possible, use species that are native to the area. Native species provide long-term soil stabilization which is aesthetically harmonious with natural vegetation and which requires little long-term maintenance. Short -terns maintenance is necessary to ensure the establishment of the vegetation. Maximizing Effectiveness: Successful planting projects depend on selecting suitable plant species, using healthy planting stock, and planting when the season and weather conditions are favorable. The site should be properly prepared for planting and should be properly maintained after planting to ensure long-term survival of the plants. Make sure the contract and plans include adequate provisions for all aspects of the planting process. Since vegetative planting places living plants on a site, thus decreasing the length of time necessary to establish a complete revegetation project, it is more effective than seeding methods for revegetation. Adequate maintenance is absolutely necessary to achieve this effectiveness since vegetative planting require irrigation for at least the first year and will benefit from irrigation for 2 or more years. Vegetative planting may be combined with seeded grasses and legumes that provide immediate surface coverage. Construction Make sure that planting sites are adequately graded and that tree locations Gu'delwmes aInd planting areas (for shrubs, ;,ines, and ground, awterg) are marked and IDEQ Storm Water Best Management Practices Catalog %$ September 2005 approved before planting begins. ■ Plant materials should be examined before use to ensure that species, container sizes, and root and soil condition are acceptable. If possible, the growth medium for containerized plants should be similar to the soil type on the revegetation site. Container size guidelines are as follows: ■ Tree species may be of bare rootstock or of potted stock. Pots should be one gallon size or larger. ■ Shrub species may be of bare rootstock or of potted stock. The preferred planting pot is a tube of woven plastic that is planted with the plant contained in it. The pot deteriorates over time. The pots should be 2 in. long, with both ends open. ■ Paper pots should be 2 to 3.1 in. square and 8.5 to 12 in. long. The paper around the rim should be removed to ground level at planting. ■ Peat pots are not recommended since research has shown greater mortality of plantings in peat pots due to drying. If peat pots are used, any exposed peat pot material showing after planting should be removed. ■ In general, no container should be less than 2 in. wide and 6 in. deep. Plant storage: Store bundled bare root planting stock, whether tree or shrub species, in a cool, moist place from time of receipt until time of planting. This time should not exceed 10 days. Store potted planting stock in shade, out-of- doors, and kept lightly sprinkled with water to maintain a moist soil from the time of receipt to the time of planting. This time should not exceed 30 days. Planting procedures: ■ Plant the mixture of trees and shrubs that has been prescribed. In no case should this be less than 690 plants per acre. If bare root stocks are used, planting rates should be increased by 1.25 times the stated rate. ■ Voluntary or unskilled labor may be used in planting. However, a supervisor who is skilled in the techniques being used should direct the labor. ■ Construct a basin 12 in. in diameter and depressed no more than 2 in. from the elevation of the downslope lip. ■ Open the planting hole with a planting bar or shovel. Then place the plant near the downslope lip of the basin. This allows sloughing from the slope to fall in to the basin without burying the young plant. ■ Carefully remove plants from their containers, if any, and place them in the planting holes so that the crown of the plant is at the surface of the soil. No air space should be allowed around the roots, nor should the roots be folded under. Plants in individual containers made of decomposable material are planted without removing them from the container. ■ Apply fertilizer at the rate specified, and place wood chip or wood fiber mulch to a depth of 2 in. around each plant. ■ The soil should be wetted to field capacity to a depth of 3.1 to 4 in. at the time of planting and each time the soil moisture level drops below the permanent wilting percentage. IDEQ Storm Water Best Management Practices Catalog 79 September 2005 Maintenance • Irrigation of vegetative plantings during the first 2 years following planting is required to increase the survival rate. Water as often as necessary during periods of intense heat or lack of rain. ■ Inspect plantings frequently after first installed to see if plants are thriving. Remove and replace dead plants to restore the prescribed number of living plants per hectare. ■ After storm events, examine the planting basins and mulch cover and snake any needed repairs. IDEQ Storm Water Best Management Practices Catalog 80 September 2005 Willow posts Vnstailed below depth ot streambed scour. Lunker with riprap below basefiow stage. Aebar is drrven below bed scour depth. Willow Stakes Gfaded Sups Cobblestones A -lack table structures_ a) > v) ICI co ACLU Jn _M i cn � C D � a L7. � n- 0 p 9 C7� CC Garden hose a Trees under 6 Plant at the same depth as when pre- viously grown. Spread out roots of bare -root specimens. '>takes Prepare watering depression inside excavated area. Planting soil mixture drap young, fin -barked trees Garden hose MI to *��: Ole', _ t � t • • Stake Inlet Protection BMP 31 Description Inlet protection consists of a filtering measure placed around an inlet or drain to trap sediment and prevent the sediment from entering the storm drain system. Additionally, it serves to prevent the silting -in of inlets, storm drainage systems, or receiving channels. Inlet protection may be composed of gravel and stone with a wire mesh filter, block and gravel, or sod. Manufactured products are also available that are designed to trap silt and sediment at the point of entry to a storm drain. Inserts can include bags, racks, baskets and other materials that hang down into a catch basin or inlet. Inserts are made from filter fabric, wire mesh, metal plates, various types of plastic products and combinations of these and other materials. Care should be taken not to cause flooding with diverted flow. Applications Inlet protection is appropriate for small drainage areas (less than I ac.) where storm drains will be ready for use before the drainage area reaches final stabilization. Storm drain inlet protection is also used where: ✓ A permanent storm drain structure is being constructed on site and there is danger of sediment silting it in before permanent site stabilization. ✓ There is a threat of sediment silting in an inlet that is in place prior to permanent stabilization. ✓ Ponding around the inlet structure could be a problem to traffic on site. ■ Block and gravel filters can be used where velocities are higher. They may be used with most types of inlets where overflow capability is needed and in areas of heavy flows (238 gal/min or greater). ■ Gravel and mesh filters can be used where flows are higher and in locations subject to disturbance by site traffic. This type of protection may be used with most inlets where overflow capability is needed and in areas of heavy flows (238 gal/min or greater). ■ Sod inlet filters are usually used where sediments in the storrnwater runoff are low. ■ Gravel and mesh filters and block and gravel filters should not be used in the right of way unless there is sufficient space to avoid a traffic hazard. Limitations Drainage area — 1 ac. Maximurn slope — 5% Minimum bedrock depth — 2 ft Minimum water table — 2 ft NRCS soil type - ABCD Freeze/thaw — good Drainage/flood control — no ■ Consider sandbags (BMP 43-Temporary Berms) in situations where anchoring is not possible (e.g., paved road surfaces). ■ Inlet protection is a high maintenance item compared with other more permanent measures. ■ These devices require additional upslope BMPs to be effective. IDEQ Storm Water Best Management Practices Catalog 102 September 2005 Targeted Sediment Pollutants Design Several different designs are in use and the configurations vary. The following Parameters design considerations apply to most of inlet protection. Some additional concerns apply to only one or two of the types. Drainage area: Not to exceed 1 ac. Overland flow to the inlet should be no greater than 240 gal/min. Slope gradient: The drainage area should be fairly flat, with slopes of 5% or less. With filter fabric designs, the area immediately surrounding the inlet should not exceed a slope of 1%. Sump: Where possible, a block -and -gravel protection device should be provided with a sediment -trapping sump 12 to 20 in. deep as measured from the crest of the inlet. Side slopes should be 2:1. The recommended volume of excavation is 860 W/ac. of ground disturbed. Orientation: To achieve maximum trapping efficiency in gravel -and -mesh or block -and -gravel traps; the longest dimension of the basin should be oriented toward the longest inflow area. Materials for excavated gravel inlet protection: ■ Hardware cloth or wire mesh with 2/5 to 3/5 in. openings ■ Washed gravel 0.8 to 4 in. diameter Materials for block and gravel inlet protection: ■ Hardware cloth or wire mesh with 2/5 to 3/5 in. openings ■ Filter fabric (see the fabric specifications for silt fence, BMP 36-Silt Fence) ■ Concrete blocks 4 to 12 in. wide ■ Washed gravel 0.8 to 4 in. diameter Inlet Inserts: Devices should be installed as per the manufacturer's instruction meeting the following criteria: ■ Devices should be installed as a point protection or in series as a perimeter sediment control BMP prior to any site grading activity. ■ Installation should not block flows from filtering into the inlet or catch basin. ■ Fabrics or other materials should be sized to handle projected site runoff and sediment load flows. Filter fabric should not be used alone as inlet protection. ■ Devices should be installed without protruding parts that could be a traffic, worker, or pedestrian hazard. ■ Retrieval edges, cords, bars, chains or other mechanisms should be flagged or marked for retrieval under submerged conditions. IDEQ Storm Water Best Management Practices Catalog 103 September 2005 Guidelines 0 Remove any obstructions to excavating and grading. Excavate sump area, grade slopes, and properly dispose of soil. ■ Secure the inlet grate to prevent seepage of sediment -laden water. ■ Place wire mesh over the drop inlet so the wire extends a minimum of 1 ft beyond each side of the inlet structure. Overlap the strips of mesh if more than one is necessary. ■ Place filter fabric over the mesh, extending it at least 1 ft beyond the inlet opening on all sides. Ensure that weep holes in the inlet structure are protected by filter fabric and gravel. ■ Place stone or gravel over the fabric/wire mesh to a depth of at least 20 in. Block and gravel: ■ open ends of the block should face outward, not upward, and the ends of adjacent blocks should abut. Lay one block on each side of the structure on its side to allow for dewatering of the pool. ■ The block barrier should be at least 12 in. high and may be up to a Secure the inlet grate to prevent seepage of sediment -laden water. ■ Place wire mesh over the drop inlet so the wire extends a minimum of 12 to 20 in. beyond each side of the inlet structure. Overlap the strips of mesh if more than one is necessary. ■ Place filter fabric (optional) over the mesh and extend it at least 20 in. beyond the inlet structure. ■ Place concrete blocks over the filter fabric in a single row lengthwise on their sides along the sides of the inlet. Excavate the foundation a minimum of 2 in. below the crest of the inlet. The bottom row of blocks should be against the edge of the structure for lateral support. ■ The maximum of 24 in. high. It may be from 4 to 12 in. deep, depending on the size of block used. ■ Prior to backfrlling, place wire mesh over the outside vertical end of the blocks so that stone does not wash down the inlet. ■ Place gravel against the wire mesh to the top of the blocks. Swale, ditch line or yard inlet protection: ■ Excavate completely around inlet to a depth of 18 in. below notch elevation. ■ Drive 2 x 4 post 1 ft into ground at four corners of inlet. Place nail strips between posts on ends of inlet. Assemble top portion of 2 x 4 frame using overlap joint shown. Top of frame (weir) should be 6 in. below edge of roadway adjacent to inlet. ■ Stretch wire mesh tightly around frame and fasten securely. Ends should meet at post. ■ Stretch filter cloth tightly over wire mesh, the cloth should extend from top of frame to 18 in. below inlet notch elevation. Fasten securely to frame. Ends should meet at post, be overlapped and folded, then fastened down. ■ Backfill around inlet in compacted 6 in. layers until layer of earth is even with notch elevation on ends and top elevation on sides. ■ If the inlet is not in a low point, construct a compacted earth dike in the ditch line. helaw it The tnI3 of the dike is in he at Ienst 6 in higher th-in IDEQ Storm Water Best Management Practices Catalog 104 September 2005 the top of frame (weir). ■ This structure should be inspected frequently and the filter fabric replaced when clogged. Curb Inlet Protection: ■ Attach a continuous piece of wire mesh (30 in. minimum width by throat length plus 4 ft) to the 2 x 4 in. weir (measuring throat length plus 2 ft) as shown on the standard drawing. ■ Place a piece of approved filter cloth (40-85 sieve) of the same dimensions as the wire mesh over the wire mesh and securely attach to the 2 in. of 4 in. weir. ■ Securely nail the 2 x 4 in. weir to 9 in. long vertical spacers to be located between the weir and inlet face (maximum 6 ft apart). ■ Place the assembly against the inlet throat and nail (minimum 2 ft) lengths of 2 x 4 in. to the top of the weir at spacer locations. These 2 x 4 in. anchors should extend across the inlet top and be held in place by gravel - filled bags or alternate weight. ■ The assembly should be placed so that the end spacers are a minimum 1 ft beyond both ends of the throat opening. ■ Form the wire mesh and filter cloth to the concrete gutter and against the face of curb on both sides of the inlet. Place clean 2 in. stone over the wire mesh and filter fabric in such a manner as to prevent water from entering the inlet under or around the filter cloth. ■ This type of protection should be inspected frequently and the filter cloth and stone replaced when clogged with sediment. ■ Assure that storm flow does not bypass inlet by installing temporary earth or asphalt dikes directing flow into inlet. Maintenance Inspect regularly and after every storm. Make any repairs necessary to ensure the measure is in good working order. ■ Remove accumulated sediment and restore the trap to its original dimensions when sediment has accumulated to half the design depth of the trap. All sediments removed should be disposed of properly. ■ On gravel -and -mesh devices, clean (or remove and replace) the stone filter if it becomes clogged. ■ Replacement of inlet inserts should be per manufacturer's instructions or when device no longer drains. At no time should devices be punctured or otherwise modified to bypass. ■ Unless cleaned for reuse as a permanent site control or cleaned and left to biodegrade, all inlet inserts should be removed after construction is completed (or after permanent vegetation is established). ■ Inlet protection should remain in place and operational up to 30 days after the drainage area is completely stabilized. IDEQ Storm Water Best Management Practices Catalog 105 September 2005 CD � r rrrn CL WOO" MAW CD co c U5 ;/� Ft L.-IE 11r (`in 0-uln, v �-- PONDING HEIGHT 'rf �•G4�. .. PLAN VIEVY CURB SPILLWAY CATr�H BASIN NOTES: PLACE CURS 1'YP-- SEMMENT 8 ;RRIERS CN GENTLY SLOPING SEREE.T SEC I'liENTS, I HERE 'ER Carr POND AND ALLOW SEDIMENT TfJ �-,,.PARATE FROM RUNOFF_ 2_ SANDBAGS, OF EITHER @URLAP OR WOVEN GEOTEXTILE FABRIC, ARE FU ED WITH GRAVEL, LAYERED AND PACKED TICrITU(, 1NL _ SIOEWALK SECTION A. - A I LEAVE ONE SANOBAG GAP IN THE TOP ROW To PROVIDE A SPILLWAY FOR ©VERFLDW.. 4. INSPECT BARRIERS AND REMOVE S'EDJM�IiT AFTER EACH STORM EVENT. SEDIMENT AND GRAVEL MUST BE REMOVED FROM THE TRAVEL -El WAY 'MMEDIATE_Y. EEC" OF ROADWAY OR 2' F-"AME TOP OF EARTH 0{KE I � FLOW FLOW AIL S7RJP 575 ORCVEt1 JI 0 •p CROUND nrrnvYc.v n T--R cIOTH SWAL� INLE"ll PROTECTION DETAIL S' UAXIMUM SPACING OF 2"x4" SPACERS Lr BONE 2-xd WEIR 2" x C SPACER 2� xA� ANCHORS EXCAVATE AND RE --COMPACT EARTH --- E I STANIDARD 5YMEOL C.;,NQ BAG OR ALTERWE YfEIGHT 2' MIN r.[NG'iM OF 2 Y4"� 'NErR 2" STONE'—"' FILTERCLOTH Irv; i. ' L__j sTANOARO SYWOL CURS INLEF P90TECTICN DFTAl[_ U.W. DEPARTMENT OF AGRICULTURE SDI; C:)NSERVATION SERVICE MOTHMAN—ORTON COMANY Mi:tSc . IQAHQ iDAPO INLET PROTECTION DETnIL S i ANOAR0 pRAWING 1po_ t Drop inlet with grate Stakes Filter fabric r l +� f Filter Staking fabri Filtered water r ,. Washed gravel Runoff Water' with Sediment Buried filter fence Drop inlet with grate FILTER FABRIC FENCE INLET FILTER Gravel 300mm in depth minimum N Runoff Water with Sediments Drop inlet with grate Wire mesh with filter fabric on top �t Filtered water to storm drain system GRAVEL AND WIRE MESH FILTER SECTION 0 Silt Fence :y. . Description A silt fence is a temporary sediment barrier consisting of a filter fabric stretched and attached to supporting posts. Wire fence backing is necessary with several types of filter fabric commonly used. Silt fences assist in sediment control by retaining some of the eroded soil particles and slowing the runoff velocity to allow particle settling. Applications 2 Silt fences can be used near the perimeter of a disturbed area to intercept sediment while allowing water to percolate through. The fences should remain in place until the disturbed area is permanently stabilized. ■ Silt fences can also be used along the toe of fills, on the downhill side of large through -cut areas, along streams, and at natural drainage areas to reduce the quantity of sediment and to dissipate flow velocities to downstream areas. ■ Also use at grade breaks on cut/fill slopes and above interceptor dikes. ■ The silt fence should be constructed after the cutting and slashing of trees and before excavating haul roads, fill benches, or any soil disturbing construction activity in the drainage areas. Limitations Drainage area — 1 ac./100 ft Maximum slope — 330/Q Minimum bedrock depth — 2 ft Minimum water table — 2 ft MRCS soil type - ABCD Freeze/thaw — good Drainage/flood control — no Silt fences should not be used where there is a concentration of water in a channel or drainageway or where soil conditions prevent the ininimum fabric toe -in depth or minimum depth for installation of support posts. If concentrated flow occurs after installation, take corrective action by placing rock berms or other corrective measures in the areas of concentrated flow. Targeted Sediment Pollutants Design N Maximum allowable slope lengths contributing runoff to a silt fence are Parameters listed in Table 36-1 below. ■ Maximum drainage area for overland flow to a silt fence should not exceed 0.5 ac. per 100 ft of fence. ■ Design computations are not required. All silt fences should be placed as close to the contour as possible, and the area below the fence should be undisturbed or stabilized. ■ A detail of the silt fence should be shown on the plan, and contain the following minimum requirements: ✓ The type, size, and spacing of fence posts ✓ The size of woven wire support fences ✓ The type of filter cloth used ✓ The method of anchoring the filter cloth IDEQ Storm Water Best Management Practices Catalog 120 September 2005 ✓ The method of fastening the filter cloth to the fencing support Where ends of filter fabric come together, they should be overlapped, folded and stapled to prevent sediment bypass. Materials: ✓ Silt Fence Fabric: The fabric should meet the specifications in Table 36-2 below, unless otherwise approved by the appropriate erosion and sediment control plan approval authority. Such approval does not constitute statewide acceptance. Statewide acceptability depends on in -field and/or laboratory observations and evaluations. ✓ Fence Posts (for fabricated units): The length should be a minimum of 36 in. long. Wood posts will be of sound quality hardwood with a minimum cross sectional area of 3.0 square in.. Steel posts will be standard "T" and "U" section weighing not less than 1 pound per linear ft. ✓ Wire Fence (for fabricated units): Wire fencing should be a minimum 14.25 gage with a maximum 6 in. mesh opening, or as approved. ✓ Prefabricated Units: Envirofence or approved equal may be used in lieu of the above method providing the unit is installed per manufacturer's instructions. Construction 0Posts should be spaced 10 ft apart when a wire mesh support fence is used Guidelines and no more than 6.5 ft apart when using extra -strength filter fabric (without a wire fence). The posts should extend at least 16 in. into the ground. ■ If standard strength filter fabric is to be used, fasten the optional wire mesh support fence to the upslope side of the posts using heavy duty wire staples, tie wires, or hog rings. Extend the wire mesh support to the bottom of the trench. The filter fabric should then be stapled or wired to the fence. ■ Extra strength filter fabric does not require a wire mesh support fence. Staple or wire the filter fabric directly to the posts. ■ Do not attach filter fabric to trees. ■ Where joints in the fabric are required, splice it together only at a support post, with a minimum 6 in. overlap, and securely seal the joint. ■ Embedded filter fabric should extend in a flap that is anchored by backfill, to prevent fabric from pulling out of ground. Maintenance Silt fences should be inspected periodically for damage (such as tearing by wind, animals, or equipment) and for the amount of sediment that has accumulated. Remove the sediment when it reaches one-half the height of the silt fence. In situations where access is available, machinery can be used. Otherwise, the silt should be removed manually. The following are key elements to remember: ■ The sediment deposits should be removed when heavy rain or high water is anticipated. ■ The sediment deposits should be placed in an area where there is little danger of erosion IDEQ Storm Water Best Management Practices Catalog 121 September 2005 ■ The silt fence should not be removed until adequate vegetative growth ensures no further erosion of the slopes. Generally, the fabric is cut at ground level, the wire and posts are removed, then the sediment is spread, seeded, and protected (mulched) immediately. Table 36-1. Maximum Allowable Slope Lengths i Slope Steepness Maximum Slope Length (Feet) i 2:1 50 3:1 75 4:1 j 125 5:1 175 Flatter than 5:1 200 Table 36-2. Filter Fabric Specifications Fabric Properties Value Minimum Acceptable Test Method E Grab Tensile Strength (lbs) ; 90 ' ASTM D 1682 Elongation at Failure (%) ' 50 ASTM D 1682 Mullen Burst Strength (PSI) 190 ASTM D3786 Puncture Strength (lbs) 40 ;ASTM D751 (modified) Equivalent Opening Size 40-80 US Std Sieve CW-02215 Ultraviolet Radiation Stability % 90 ASTM-G-26 IDEQ Storm Water Best Management Practices Catalog 122 September 2005 WOVEN wiRC F3NCE (t a 1/2 GA. MIN MAX. Cr MESH SPAG:tJG) I NTQ GROUND F FILTER UK ►m "lz "Z PERSPECTIVE MEW 36, MIN. FENCE POST WOVEN 'N1RE FE14CE (1 d 1 /2 Gk MIN- MAX.- 5- MESH SPACING) WITH FILTER CLOTH OVER 20' MIN. FLOW EMBED F11~TE.R CLOTH MIN. Ir INTO GROUND j 1 E MIN. E7 CROUND S S- SECTEON STANCARO SYMBOL CONSTRUCTION NOTES FOR FAERICATED SILT FEMCE 1 'COVEN WIRE FENCE TO BE FASTENEO SECURELY TO FENCE POSTS WITH WIRE TICS OR 57AP! ES. 2 FILTER CLOTH TO BE FAST IE-NED SE URE,Y TO WOVEN w1RE FENCE WITH TIES SP.C.a PIERY 24 INCHES AT TCP AND "-ScCTION. 3 WHE,4 TWO SECTIONS OF FILTER CLOTH ADJOIN EACP OTHER MEY SHALT BE OVERLAPPU By 6 INCHES AND FOLDED. a MAINT=NANC=' SHALL 6E PRE-om 1ED AS NEEDED AND MATERIAL REMOvEO WHEN "3ULCEa 00iE_0P IN THE. SILT FENCE. U.S. DEPARTMENT GF AGRICULTURE SOIL. CONSERVATICN SERVICE TOOTHMAt•1—OR'CN Et`ICINEeR11VC CQAwc�Y ;OISE. IQAHO McC,4.:.. IDAHO POSTS. 54 EEL. EITHER "T' CR 'Q.' I`rPE OR 7 }iAP,OWOCO. FF-NC y- WOVI_N W►RE, 14 GAGE.. 6- MAX. MESH CPv4ING. FILTER CLOTH: FILTER X. MIRAF i 10OX. STAE31UNKA T i 40N OR APPROVE© ECUrAL. PREFA8RICATED UNIT. GEOrAg. ENVIROFENICE OR APPROVED EQUAL. SILT FENCE STD= NCAr=O 0RAININC SF— ump op - �! e� l • 1 . .�'}'. •��'. .i •a .� .•'1. },.• •; a'•p 1 �1�•l.rS"•'/{{ a' { f^� 51'. f I i'.1'.� ='�';.•..,4:i�•?;;;�r'�,� i� i,::ir�Xi yv,':�5, r-$e?;y•,..,i al Catch Basin Inserts Description Catch basin inserts are devices installed under a storm -drain grate that provide water quality treatment through filtration, settling, or adsorption. Catch basin inserts are commercially available products and are generally configured to remove one or more of the following contaminants: coarse sediment, oil and grease, and litter and debris. Units should be routinely maintained to achieve maximum removal efficiency. Maintenance frequency will vary depending on the amount and type of pollutant targeted. Applications Studies performed by King County, WA, have found catch basin inserts to be nominally effective at removing fine (silt and clay) sediment and associated pollutants. Inserts were successful in capturing coarse material and debris. Hydrocarbons. Product removal efficiencies for inserts in good condition ranged from 20 to 90% when exposed to oil concentrations near the high end for urban runoff, and performance dropped off rapidly with use. Possible locations for catch -basin insert implementation include parking lots, gas stations, golf courses, streets, driveways, industrial or commercial facilities, and municipal corporation yards. Limitations Drainage area — 5000 square feet Max slope — unlimited Minimum bedrock depth - N/A Minimum water table — N/A NRCS soil type — N/A Freeze/thaw — fair Drainage/flood control — no The greatest difficulties facing those implementing catch -basin inserts for stormwater treatment lie in the small space inside the catch basin, the tendency for sediments to clog or blind filter media, and the fluctuating nature of the flow. Catch -basin inserts are very maintenance -intensive. Check with the parties that will be required to maintain these systems prior to design and installation. The problems may be compounded from street sanding and other activities. Targeted Sediment — 35% Pollutants Phosphorus — 5% Trace metals Hydrocarbons Design The catch -basin insert should meet the following criteria: Parameters ' The total maximum tributary area should be 5,000 square feet (+ 5%) per unit for new development projects and 7, 000 feet per unit for redevelopment projects. ■ A catch -basin insert for a new development project should be designed to fit with a standard grate. If the insert is installed in an existing catch basin, the insert should be demonstrated to fit properly so that there is a positive IDEQ Storm Water Best Management Practices Catalog 41 September 2005 seal around the grate to prevent low -flow bypass. The maximum height of the grate above the top of the frame, with the insert installed, should not exceed 3/16 inch, and the grate should be non -rocking. The bottom of the filter media (oil absorbent/absorbent material) should be above the level of normal low flows. If the media is above the crown of the outlet pipe, it is assumed to be above the normal low flows. An alternative method to demonstrate that the media is above the normal low flow is to show (by backwater analysis method) that the bottom of the media is above the water surface elevation corresponding to the water quality design flow. The catch basin insert should be located to be accessible as needed for maintenance and not limited by continuous vehicle parking. This may require elimination of a parking stall for redevelopment projects. While no pretreatment is required with a catch -basin insert, the use of source control BMPs on the site will decrease maintenance needs. Construction Installation of a catch -basin insert for a new or redevelopment project should Guidelines follow the manufacturer's recommended procedures. The catch -basin insert should be installed in the catch basin after the site has been paved or stabilized (for new development) or after completion of construction (for a redevelopment site that is already paved). If the catch -basin insert is used for sediment control during construction, it should be reconfigured in accordance with the manufacturer's recommendations. When used for sediment control, the insert should be inspected at least weekly and maintained if needed. To minimize the generation of solid waste and the consumption of natural resources, systems constructed of or using recycled products are preferred. Reusable filter materials should be refreshed according to the manufacturer's instructions. Maintenance The catch -basin insert should be fitted with oil-absorbent/absorbent filter media, which should be inspected monthly and changed whenever the filter media surface is covered with sediment. Inspections are especially important during the wet season. Acceptable filter media include absorbent W, whole fibrous moss (not necessarily sphagnum moss), Petrolok, and general purpose absorbent (i.e., wood fiber). IDEQ Storm Water Best Management Practices Catalog 42 September 2005 .r .r ./ -r •r •r v r .r •r •/ •J •/ ti. X :r :r :✓ �r � .r r .X •I �- •Y r .r ,r .r -,r -r •/ 00 Ca ca I � f tt ca w e+ c�a irs' Q. cza d P. ::p rib n KDan = c tL ; � o ram. ev N a ,r N' a• Q' w� �- o �, < � �. Fr Opco IOl T t c. •a cy --' r..r C 0) ►., cs Co C] tA to r... r+ C r.+ 0 s� too WW :0 a.•c ro C!1 Q O :2. C to .+ rt�n < �- CD a C.,� c0 CID CID C) X, aQ roe fD O �+' FD Cl. G» N v n ell 0 CI. CD O ae a4 .... m sn J 0 O �� Cr -, n ..•] C L �, cr O 7C" w •-� [n o co �" is N Cz. 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Introduction................................................................................................................................................ 2 1.2 Permit Area............................................................................................................................................... 2 1.3 Eligibility................................................................................ ................. 2 ................................................... 1.4 Waivers for Certain Small Construction Activities..................................................................................... 5 PART 2: AUTHORIZATION FOR DISCHARGES OF STORM WATER FROM CONSTRUCTION ACTIVITY ...... 5 2.1 Authorization to Discharge Date ........... ........................................................... ;:...... .......................... ....... 5 2.2 Notice of Intent Contents........................................................................................................................... 5 2.3 Submission Deadlines............................................................................................................................... 6 2.4 Where to Submit........................................................................................................................................ 7 PART 3: STORM WATER POLLUTION PREVENTION PLANS(SWPPPS)..........................................................7 3.1 Storm Water Pollution Prevention Plan Framework.................................................................................. 7 3.2 Requirements for Different Types of Operators........................................................................................ 7 3.3 Pollution Prevention Plan Contents: Site and Activity Description............................................................ 8 3.4 Pollution Prevention Plan Contents: Controls to Reduce Pollutants......................................................... 9 3.5 Non -Storm Water Discharge Management............................................................................................... 9 3.6 Maintenance of Controls........................................................................................................................... 9 3.7 Documentation of Permit Eligibility Related to Endangered Species ..................................................... 10 3.8 Copy of Permit Requirements.................................................................................................................10 3.9 Applicable State, Tribal, or Local Programs............................................................................................10 3.10 Inspections........................................................................................................10 ...................................... 3.11 Maintaining an Updated Plan .......................................... ...................................... 11 3.12 Signature, Plan Review and Making Plans Available............................................................................. 12 3.13 Management Practices ......................................... ....................... 12 3.14 Documentation of Permit Eligibility Related to Total Maximum Daily Loads .......................................... 13 PART 4: SPECIAL CONDITIONS, MANAGEMENT PRACTICES AND OTHER NON -NUMERIC LIMITATIONS:.........................................................................................................................................13 4.1 Continuation of the Expired General Permit........................................................................................... 13 4.2 Requiring an Individual Permit or an Alternative General Permit........................................................... 14 4.3 Releases in Excess of Reportable Quantities......................................................................................... 14 4.4 Spills........................................................................................................................................................14 4.5 Attainment of Water Quality Standards After Authorization.................................................................... 15 PART 5: TERMINATION OF COVERAGE.............................................................................................................15 5.1 Requirements............................................................. .............................................................................15 5.2 Submitting a Notice of Termination ....:........... 5.3 Where to Submit...................................................................................................................................... 16 PART 6: RETENTION OF RECORDS....................................................................................................................16 Small and Large Construction Activities i PART7: REOPENER CLAUSE.............................................................................................................................16 7.1 Procedures for Modification or Revocation............................................................................................. 16 7.2 Water Quality Protection......................................................................................................................... 16 7.3 Timing of Permit Modification.................................................................................................................. 16 PART 8: STANDARD PERMIT CONDITIONS.......................................................................................................16 PART 9: PERMIT CONDITIONS APPLICABLE TO SPECIFIC STATES, INDIAN COUNTRY, OR TERRITORIES.........................................................................................................................................16 APPENDICES Appendix A - Definitions and Acronyms.................................................................................................................A-1 Appendix B - Permit Areas Eligible for Coverage........................................................ .......:...:............................. 13-1 Appendix C - Endangered Species Act Review Procedures............................................:..................................... C-1 Appendix D - Small Construction Waivers and Instructions....................................................... ............................D-1 Appendix E - Notice of Intent Form and Instructions..............................................................................................E-1 Appendix F - Notice of Termination Form and Instructions..............:..................................................................... F-1 Appendix G - Standard Permit. Conditions.....................................................................:...................................... G-1 Small and Large Construction Activities fi General Pen Wt National Pollutant Discharge Elimination System General Permit for Discharges from Large and Small Construction Activities In compliance with the provisions of the Clean Water Act, 33 U.S.C. §1251 at, sea., (hereafter CWA or the Act), as amended by the Water Quality Act of 1987, P.L. 100-4, operators of large and small construction activities that are described in Subpart 1.3 of this National Pollutant Discharge Elimination System (NPDES) general permit, except for those activities excluded from authorization of discharge in Subpart 1.3.0 of this permit are authorized to discharge pollutants to waters of the United States in accordance with the conditions and requirements set forth herein. Permit coverage is required from the "commencement of construction activities" until "final stabilization" as defined in Appendix A. This permit shall become effective on July 1, 2003 (as modified effective January 21, 2005). This permit and the authorization to discharge shall expire at midnight, July 1, 2008. Signed: Linda M. Murphy, Director, Office of Ecosystem Protection EPA Region 1 Kevin Bricke, Acting Director, Division of Environmental Planning and Protection EPA Region 2 Carlos E. O'Neill, P.E., Acting Division Director, Caribbean Environmental Protection Division EPA Region 2 John M. Capacasa, Director, Water Protection Division EPA Region 3 Rebecca Harvey, Chief, NPDES Program Branch EPA Region 5 Miguel I. Flores, Director, Water Quality Protection Division EPA Region 6 Leo J. Alderman, Director, Water, Wetlands, and Pesticides Division EPA Region 7 Stephen S. Tuber, Assistant Regional Administrator, Office of Partnerships and Regulatory Assistance EPA Region 8 Nancy Woo, Acting Director, Water Division EPA Region 9 Randall F. Smith, Director, Office of Water EPA Region 10 The signatures are for the permit conditions in Parts 1 through 9 and Appendices A through G and for any additional conditions which apply to facilities located in the corresponding state, Indian country, or other area. Small and Large Construction Activities 1 General Permit PART 1: COVERAGE UNDER THIS PERMIT 1 A Introduction This Construction General Permit (CGP) authorizes storm water discharges from larged small construction charges enter activities that result in a total land disturbance of equal to or greater than one acre, here surface waters of the United States or a municipal separate stomp sewer system (MS4) leading to surface waters of the United States subject to the conditions set forth in this permit. This permit also authorizes storm water discharges from any other construction activity designated by EPA where EPA makes that designation based on the potential for contribution to an excursion of a water quality standard or for significant contribution of pollutants to waters of the United States. This permit replaces two permits issued in 1998 (63 FR 7858, February 17, 1998 for EPA Regions 1, 2, 3, 7, 8, 9, and 10 and 63 FR 36489, July 6, 199B for EPA Region 6). Any references to the 1998 CGP in this permit refer to those two permits. This permit is presented in a reader -friendly, plain language format. This permit uses the terms "you' and "your" to identify the person(s) who owns or operates a "facility" or "activity" as defined in Appendix A and who must comply with the conditions of this permit. This format should allow you, the permittee and -operator of a large or small construction activity, to easily locate and understand applicable requirements. The goal of this permit is to reduce or eliminate storm water pollution from construction activity by requiring that you plan and implement appropriate pollution control practices to protect water quality. 1.2 Permit Area If your large or small construction activity is located within the areas listed in Appendix B, you may be eligible to obtain coverage under this permit. Permit coverage is actually provided by legally separate and distinctly numbered permits covering each of the areas listed in Appendix B. 1.3 Eligibility Permit eligibility is limited to discharges from 'large' and "small" construction activity as defined in Appendix A or as otherwise designated by EPA. This general permit contains eligibility restrictions, as well as permit conditions and requirements. You may have to take certain actions to be eligible for coverage under this permit. In such cases, you must continue to satisfy those all provisions to maintain permit authorization. If you do not meet the requirements that are a pre -condition to eligibility, then resulting discharges constitute unpermitted discharges. By contrast, if you do not comply with the requirements of the general pen -nit, you may be in violation of the general permit for your otherwise eligible discharges. A. Allowable Storm Water Discharges Subject to compliance with the terms and conditions of this permit, you are authorized to discharge pollutants in: 1. Storm water associated with large and small construction activity as defined in Appendix A; 2. Storm water discharges designated by EPA as needing a storm water permit under 40 CFR §122.26(a)(1)(v) or §122.26(b)(15)(ii); 3. Discharges from support activities (e.g., concrete or asphalt batch plants, equipment staging yards, material storage areas, excavated material disposal areas, borrow areas) provided: a. The support activity is directly related to the construction site required to have NPDES permit coverage for discharges of storm water associated with construction activity; b. The support activity is not a commercial operation serving multiple unrelated construction projects by different operators, and does not operate beyond the completion of the construction activity at the last construction project it supports; and c. Appropriate controls and measures are identified in a Storm Water Pollution Prevention Plan (SWPPP) covering the discharges from the support activity areas; and 4. Discharges composed of allowable discharges listed in 1.3.A and 1.3.8 commingled with a discharge authorized by a different NPDES permit and/or a discharge that does not require NPDES permit authorization. 2 Small and Large Construction Activities General Permit B. Allowable Non -Storm Water Discharges You are authorized for the following non -storm water discharges, provided the non -storm water component of the discharge is In compliance with Subpart 3.5 (Non -Storm Water Discharge Management): 1. Discharges from fire -fighting activities; 2. Fire hydrant fiushings; 3. Waters used to wash vehicles where detergents are not used; 4. Water used to control dust in accordance with Subpart 3.4.G; 5. Potable water including uncontaminated water line flushings; 6. Routine external building wash down that does not use detergents; 7. Pavement wash waters where spills or leaks of toxic or hazardous materials have not occurred (unless all spilled material has been removed) and where detergents are not used; 8. Uncontaminated air conditioning or compressor condensate; 9. Uncontaminated ground water or spring water; 10. Foundation or footing drains where flows are not contaminated with process materials such as solvents; 11. Uncontaminated excavation dewatering; 12. Landscape irrigation. C. Limitations on Coverage 1. This permit does not authorize post -construction discharges that originate from the site after construction activities have been completed and the site has achieved final stabilization, including any temporary support activity. Post -construction storm water discharges from industrial sites may need to be covered by a separate NPDES permit. 2. This permit does not authorize discharges mixed with non -storm water. This exclusion does not apply to discharges identified in -Subpart 1.3.8, provided the discharges are in compliance with Subpart 3.5 (Non - Storm Water Discharge Management). 3. This permit does not authorize storm water discharges associated with construction activity that have been covered under an individual permit or required to obtain coverage under an alternative general permit in accordance with Subpart 4.2. 4. This permit does not authorize discharges that EPA, prior to authorization under this permit, determines will cause, have the reasonable potential to cause, or contribute to an excursion above any applicable water quality standard. Where such a determination is made prior to authorization, EPA may notify you that an individual permit application is necessary in accordance with Subpart 4.2. However, EPA may authorize your coverage under this permit after you have included appropriate controls and implementation procedures in your SWPPP designed to bring your discharge into compliance with water quality standards.. 5. Discharging into Receiving Waters With an, Approved Total Maximum Daily Load Analysis a. You are not eligible for coverage under this permit for discharges of pollutants of concern to waters for which there is a total maximum daily load (TMDL) established or approved by EPA unless you Incorporate into your SWPPP measures or controls that are consistent with the assumptions and requirements of such TMDL. To be eligible for coverage under this general permit, you must incorporate into your SWPPP any conditions applicable to your discharges necessary for consistency with the,assumptions and requirements of such TMDL. If a specific wasteload allocation has been established that would apply to your discharge, you must incorporate that allocation into your SWPPP and implement necessary steps to meet that allocation. b. In a situation where an EPA -approved or established TMDL has specified a general wasteload allocation applicable to construction storm water discharges, but no specific requirements for construction sites have been identified in the TMDL, you should consult with the State or Federal TMDL authority to confirm that adherence to a SWPPP that meets the requirements of the CGP will be consistent with the approved TMDL. Where an EPA -approved or established TMDL has not Small and Large Construction Activities 3 General Permit specified a wasteload allocation applicable to construction storm water discharges, but has not specifically excluded these discharges, adherence to a SWPPP that meets the requirements of the CGP will generally be assumed to be consistent with the approved TMDL. If the EPA -approved or established TMDL specifically precludes such discharges, the operator is not eligible for coverage under the CGP. Endangered and Threatened Species and Critical Habitat Protection a. Coverage under this permit is available only if your storm water discharges, allowable non -storm water discharges, and storm water discharge -related activities, as defined in Appendix A, are not likely to jeopardize the continued existence of any species that are federally -listed as endangered or threatened ("listed") under the Endangered Species Act (ESA) or result in the adverse modification or destruction of habitat that is federally -designated as critical under the ESA ("critical habitat"). b. You are not eligible to discharge if the storm water discharges, allowable non -storm water discharges, or storm water discharge -related activities would cause a prohibited "take" of federally -listed endangered or threatened species (as defined under section 3 of the ESA and 50 CFR 17.3), unless such takes are authorized under sections 7 or 10 of the ESA. c. Determining Eligibility: You must use the process in Appendix C (ESA Review Procedures) to determine eligibility PRIOR to submittal of the Notice of Intent (NOI). You must meet one or more of the following six criteria (A-F) for the entire term of coverage under the permit: Criterion A. Nofdderally-listed threatened or endangered species or their designated critical habitat are in the project area as defined in Appendix C; or Criterion B. Formal consultation with the Fish and Wildlife Service and/or the National Marine Fisheries Service under section 7 of the ESA has been concluded and that consultation: 1. Addressed the effects of the project's storm water discharges, allowable non -storm water discharges, and storm water discharge -related activities on federally -listed threatened or endangered species and federally -designated critical habitat, and ii. The consultation resulted in ether. a. Biological opinion finding no jeopardy to federally -listed species or destruction/adverse modification of federally -designated critical habitat, or b. written concurrence from the Service(s) with a finding that the storm water discharges, allowable non -storm water discharges, and storm water discharge - related activities are not likely to adversely affect federally -listed species or federally -designated critical habitat; or Criterion C. Informal consultation with the Fish and Wildlife Service and/or the National Marine Fisheries Service under section 7 of the ESA has been concluded and that consultation: i. Addressed the effects of the projects storm water discharges, allowable non -storm water discharges, and storm water discharge -related activities on federally -listed threatened or endangered species and federally -designated critical habitat, and ii The consultation resulted in either: a. Biological opinion finding no jeopardy to federally -listed species or destruction/adverse modification of federally -designated critical habitat, or b. written concurrence from the Service(s) with a finding that the storm water discharges, allowable non -storm water discharges, and storm water discharge - related activities are not likely to adversely affect federally -listed species or federally -designated critical habitat; or Criterion D. The construction activities are authorized through the issuance of a permit under section 10 of the ESA, and that authorization addresses the effects of the storm water discharges, allowable non -storm water discharges, and storm water discharge -related activities on federally -listed species and federally -designated critical habitat; or Criterion E. discharge -related cactivities l are anot likely to adversely' affect any federally -listed water General Pernut threatened or endangered species or result in the destruction or adverse modification of federally -designated critical habitat; or Criterion F. The project's storm water discharges, allowable non -storm water discharges, and storm water discharge -related activities were already addressed in another operator's valid certification of eligibility under Criteria A-E which included your construction activities and there is no reason to believe that federally -listed species or federally -designated critical habitat not considered in the prior certification may be present or located in the project area. By certifying eligibility under this criterion, you agree to comply. with any measures or controls upon which the other operator's certification was based. You must comply with any applicable terms, conditions, or other requirements developed in the process of meeting the eligibility requirements of the criteria in this section to remain eligible for coverage under this permit. Such terms and conditions must be documented and incorporated into your SWPPP. 7. Historic Properties [Reserved] You are reminded that you must comply with applicable state, tribal and local laws conceming the protection of historic properties and places. 1.4 Waivers for Certain Small Construction Activities Three scenarios exist under which small construction activities (see definition in Appendix A) may be waived from the NPDES permitting requirements detailed in this general permit. These exemptions are predicated on certain criteria being met and proper notification procedures being followed. Details of the waiver options and procedures for requesting a waiver are provided in Appendix D. PART 2: AUTHORIZATION FOR DISCHARGES OF STORM WATER FROM CONSTRUCTION ACTIVITY To obtain coverage under this general permit, you, the operator, must prepare and submit a complete and accurate Notice of Intent (NOI), as described in this Part. Discharges are not authorized if your NOI is incomplete or inaccurate or if you were never eligible for permit coverage. 2.1 Authorization to Discharge Date This permit is effective as of the publication date in the Federal Register and is effective for five years, expiring at midnight on the anniversary of publication in the fifth year. A. If you submit an NOI during the first 90 days after the Issuance date of this permit you are authorized to discharge storm water from construction activities under the terms and conditions of this permit seven (7) calendar days after submittal to EPA of a complete and accurate NOI (i.e., 7 days from date of postmark), except as noted in Subpart 2.1.C. B. If you submit an NOI after the first 90 days of this permit and prior to the expiration date of this permit, you are authorized to discharge storm water from construction activities under the terms and conditions of this permit seven (7) calendar days after acknowledgment of receipt of your complete NOI is posted on EPA's NPDES website httn://www.gna.ctovinpdeslstormwater/can, except as noted in Subpart 2.1.C. C. EPA may delay your authorization based on eligibility considerations of Subpart 1.3 (e.g., ESA concems). In these instances, you are not authorized for coverage under this permit until you receive notice from EPA of your eligibility. 2.2 Notice of Intent Contents A. You must use the NOI form provided in Appendix E (or a photocopy thereof) and available at www.eaa.ciov/ni)des/stormwater/cap. If EPA makes other NOI forms available (either directly, by public notice, or by making information available on the Internet), you may take advantage of any of those options to satisfy the NOI use requirements of this Subpart. B. You must provide the following information on the NOI form: 1. The applicable permit number for which you are requesting coverage (See Appendix B); Small and Large Construction Activities 5 General Permit 2. Operator name, address, telephone number, and Employer Identification Number (EIN) as established by the U.S. Internal Revenue Service; 3. Project/Site name, address, county or similar govemmental subdivision, and latitude/longitude of your construction project or site; 4. Whether your site is located in Indian country and if so, the name of the Reservation, if applicable; 5. Whether the_ SWPPP has been prepared in advance of filing of this N01 and the location where the applicable SWPPP may be viewed; 6. Name of the water(s) of the U.S. into which your site discharges; 7. Indication whether your discharge is consistent with the assumptions and requirements of applicable EPA approved or established TMDLs; 8. Estimated dates of commencement of construction activity and final stabilization (i.e., project start and completion dates); 9. Total acreage (to the nearest quarter acre) to be disturbed for which you are requesting permit coverage; 10. Whether any federally -listed threatened or endangered species, or federally -designated critical habitat are in your project area to be covered by this permit, and the basis for certifying eligibility for permit coverage based on the instructions in Appendix C; 11. A certification statement, signed and dated by an authorized representative as defined in Appendix G, Section 11, and the name and title of that authorized representative. 2.3 Submission Deadlines A. New Projects: To obtain coverage under this permit, you must submit a complete and accurate N01 and be authorized consistent with Subpart 2.1 prior to your commencement of construction activities. B. Permitted Ongoing Projects (only applicable for first 90 days after this permit is issued): If you previously received authorization to discharge for your project under the 1998 CGP and you wish to continue coverage under this permit: 1. Except as noted in 2.3.13.2, you must: 1. Submit an NOI within 90 days of the issuance date of this permit, and 2. Until you are authorized under this permit consistent with Subpart 2.1, comply with the terms and conditions of the 1998 CGP under which you were previously authorized. 2. If you meet the termination of coverage requirements in accordance with Subpart 5.1 within 90 days of the issuance date of this permit (e.g., construction will be finished and final stabilization achieved) you must: 1. Submit an NOT consistent with the 2003 CGP using the NOT form provided In Appendix F, and 2. Until coverage is no longer required, comply with the terms and conditions of the 1998 CGP under which you were previously authorized. C. Unpermitted Ongoing Projects (only applicable for first 90 days after this permit is issued): If you previously did not receive authorization to discharge for your project under the 1998 CGP and you wish to obtain coverage under this permit: 1. Except as noted in 2.3.C.2, you must: 1. Submit an NOI within 90 days of the issuance date of this permit, and 2. Until you are authorized under this permit consistent with Subpart 2.1, comply with an interim Storm Water Pollution Prevention Plan (SWPPP) consistent with the 1998 CGP. 2. If you meet the termination of coverage requirements in accordance with Subpart 5.1 within 90 days of the issuance date of this permit (e.g., construction will be finished and final stabilization achieved) you must comply with an interim Storm Water Pollution Prevention Plan (SWPPP) consistent with the 1998 CGP until permit coverage is no longer required. Small and Large Construction Activities 6 General Permit D. Late Notifications: Operators are not prohibited from submitting NOls after initiating clearing, grading, excavation activities, or other construction activities. When a late NOI is submitted, authorization for discharges occurs consistent with Subpart 2.1. The Agency reserves the right to take enforcement action for any unpermitted discharges that occur between the commencement of construction and discharge authorization. 2.4 Where to Submit A. Except as noted in Subpart 2.3.6, you must send your complete and accurate NOI to EPA at one of the following addresses: For Regular U.S. Mail Delivery: EPA Storm Water Notice Processing Center Mail Code 4203M U.S. EPA 1200 Pennsylvania Avenue, NW Washington, DC 20460 Eor Overniaht/Epress Mail Delivery: EPA Storm Water Notice Processing Center Room 7420 U.S. EPA 1201 Constitution Avenue, NW Washington, DC 20004. B. In lieu of Subpart 2.4.A, when available, you may submit your NOI using EPA's electronic NOI system (i.e:, eNOI) as detailed at www.epa,aov/nodes/stormwater/cgp. PART 3: STORM WATER POLLUTION PREVENTION PLANS (SWPPPS) 3.1 Storm Water Pollution Prevention Plan Framework A. A SWPPP must be prepared prior to submission of an NOI as required in Part 2. At least one SWPPP must be developed for each construction project covered by this permit and such SWPPP must be prepared in accordance with good engineering practices. B. The SWPPP must: 1. Identify all potential sources of pollution which may reasonably be expected to affect the quality of storm water discharges'from the construction site; 2. Describe practices to be used to reduce pollutants in storm water discharges from the construction site; and 3. Assure compliance with the terms and conditions of this permit. C. Once a definable area has been finally stabilized, you may mark this on your SWPPP and no further SWPPP or inspection requirements apply to that portion of the site (e.g., earth -disturbing activities around one of three buildings in a complex are done and the area is finally. stabilized, one mile of a roadway or pipeline project is done and finally stabilized, etc). D. You must implement the SWPPP as written from commencement of construction activity until final stabilization is complete. 3.2 Requirements for Different Types of Operators You may meet one or both of the operational control components in the definition of operator found in Appendix A. Subpart 3.2.0 applies to all permittees having control over only a portion of a construction site. A. If you have operational control over construction plans and specifications, you must ensure that: 1. The project specifications meet the minimum requirements of this Subpart and all other applicable permit conditions; 2. The SWPPP indicates the areas of the project where the operator has operational control over project specifications, including the ability to make modifications in specifications; 3. All other permittees implementing portions of the SWPPP (or their own SWPPP) who may be impacted by a change to the construction plan are notified of such changes in a timely manner, and 4. The SWPPP indicates the name of the party(ies) with day -today operational control of those activities necessary to ensure compliance with the SWPPP or other permit conditions. SmaU and Large Construction Activities 7 General Permit B. If you have operational control over day -today activities, you must ensure that: 1. The SWPPP meets the minimum requirements of this Subpart and identifies the parties responsible for implementation of control measures identified in the plan; 2. The SWPPP indicates areas of the project where you have operational control over day-to-day activities; 3. The SWPPP indicates the name of the party(ies) with operational control over project specifications (including the ability to make modifications in specifications). C. If you have operational control over only a portion of a larger project (e.g., one of four homebuilders in a subdivision), you are responsible for compliance with all applicable terms and conditions of this permit as it relates to your activities on your portion of the construction site, including protection of endangered species, critical habitat, and historic properties, and implementation of best management practices (BMPs) and other controls required by the SWPPP. You must ensure either directly or through coordination with other permittees, that your activities do not render another party's pollution control ineffective. You must either implement your portion of a common SWPPP or develop and implement your own SWPPP. For more effective coordination of BMPs and opportunities for cost sharing, a cooperative effort by the different operators at a site to prepare and participate in a comprehensive SWPPP is encouraged. Individual operators at a site may, but are not required to, develop separate SWPPPs that cover only their portion of the project provided reference is made to other operators at the site. In instances where there is more than one SWPPP for a site, cooperation between the permittees is encouraged to ensure the storm water discharge controls and other measures are consistent with one another (e.g., provisions to protect listed species and critical habitat). 3.3 Pollution Prevention Plan Contents: Site and Activity Description A. The SWPPP must identify all operators for the project site, and the areas of the site over which each operator has control. B. The SWPPP must describe the nature of the construction activity, including: 1. The function of the project (e.g., low density residential, shopping mall, highway, etc.); 2. The intended sequence and timing of activities that disturb soils at the site; 3. Estimates of the total area expected to be disturbed by excavation, grading, or other construction activities, including dedicated off -site borrow and fill areas; and 4. A general location map (e.g., USGS quadrangle map, a portion of a city or county map, or other map) with enough detail to identify the location of the construction site and waters of the United States within one mile of the site. C. The SWPPP must contain a legible site map, showing the entire site, identifying: 1. Direction(s) of storm water flow and approximate slopes anticipated after major grading activities; 2. Areas of soil disturbance and areas that will not be disturbed; 3. Locations of major structural and nonstructural BMPs identified in the SWPPP; 4. Locations where stabilization practices are expected to occur; 5. Locations of off -site material, waste, borrow or equipment storage areas; 6. Locations of all waters of the United States (including wetlands); 7. Locations where storm water discharges to a surface water; and 8. Areas where final stabilization has been accomplished and no further construction -phase permit requirements apply. D. The SWPPP must describe and identify the location and description of any storm water discharge associated with industrial activity other than construction at the site. This includes storm water discharges from dedicated asphalt plants and dedicated concrete plants, that are covered by this permit. Small and Large Construction Activities 8 General Permit 3.4 Pollution Prevention Plan Contents: Controls to Reduce Pollutants A. The SWPPP must include a description of all pollution control measures (i.e., BMPs) that will be implemented as part of the construction activity to control pollutants in storm water discharges. For each major activity identified in the project description the SWPPP must clearly describe appropriate control measures, the general sequence during the construction process in which the measures will be implemented, and which operator is responsible for the control measure's implementation. B. The SWPPP must include a description of interim and permanent stabilization practices for the site, including a schedule of when the practices will be implemented. Site plans should ensure that existing vegetation is preserved where possible and that disturbed portions of the site are stabilized. Use of impervious surfaces for stabilization should be avoided. C. The following records must be maintained as part of the SWPPP: 1. Dates when major grading activities occur; 2. Dates when construction activities temporarily or permanently cease on a portion of the site; and 3. Dates when stabilization measures are initiated. D. The SWPPP must include a description of structural practices to divert flows from exposed soils, retain/detain flows or otherwise limit runoff and the discharge of pollutants from exposed areas of the site. Placement of structural practices in floodplains must be avoided to the degree practicable. E. The SWPPP must include a description of all post -construction storm water management measures that will be installed during the construction process to control pollutants in storm water discharges after construction operations have been completed. Structural measures should be placed on upland soils to the degree practicable. Such measures must be designed and installed In compliance with applicable federal, local, state or tribal requirements. F. The SWPPP must describe measures to prevent the discharge of solid materials, including building materials, to waters of the United States, except as authorized by apermit issued under section 404 of the CWA. G. The SWPPP must describe measures to minimize, to the extent practicable, off site vehicle tracking of sediments onto paved surfaces and the generation of dust. H. The SWPPP must include a description of construction and waste materials expected to be stored on -site with updates as appropriate. The SWPPP must also include a description of controls, including storage practices, to minimize exposure of the materials to storm water, and spill prevention and response practices. 1. The SWPPP must include a description of pollutant sources from areas other than construction (including storm water discharges from dedicated asphalt plants and dedicated concrete plants), and a description of controls and measures that will be implemented at those sites to minimize pollutant discharges. 3.5 Non -Storm Water Discharge Management The SWPPP must identify all allowable sources of non -storm water discharges listed in Subpart 1.3.13 of this permit, except for flows from fire fighting activities, that are combined with storm water discharges associated with construction activity at the site. Non -storm water discharges should be eliminated or reduced to the extent feasible. The SWPPP must identify and ensure the implementation of appropriate pollution prevention measures for the non -storm water component(s) of the discharge. 3.6 Maintenance of Controls A. All erosion and sediment control measures and other protective measures identified In the SWPPP must be maintained in effective operating condition. If site inspections required by Subpart 3.10 identify BMPs that are not operating effectively, maintenance must be performed as soon as possible and before the next storm event whenever practicable to maintain the continued effectiveness of storm water controls. B. If existing BMPs need to be modified or if additional BMPs are necessary for any reason, implementation must be completed before the next storm event whenever practicable. if implementation before the next storm event is impracticable, the situation must be documented in the SWPPP and alternative BMPs must be Implemented as soon as possible. C. Sediment from sediment traps or sedimentation ponds must be removed when design capacity has been reduced by 50 percent. Small and Large Construction Activities 9 General Permit 3.7 Documentation of Permit Eligibility Related to Endangered Species The SWPPP must include documentation supporting a determination of permit eligibility with regard to Endangered Species, including: A. Information on whether federally -listed endangered or threatened species, or federally -designated critical habitat may be in the project area; B. Whether such species or critical habitat may be adversely affected by storm water discharges or storm water discharge -related activities from the project; C. Results of the Appendix C listed species and critical habitat screening determinations; D. Confirmation of delivery of NOI to EPA or to EPA's electronic NOI system. This may include an overnight, express or registered mail receipt acknowledgment; or electronic acknowledgment from EPA's electronic NOI system. E. Any correspondence for any stage of project planning between the U.S. Fish and Wildlife Service (FWS), EPA, the U.S. National Marine Fisheries Service (NMFS), or others and you regarding listed species and critical habitat, including any notification that delays your authorization to discharge under this permit; F. A description of measures necessary to protect federally -listed endangered or threatened species, or federally -designated critical habitat. The permittee must describe and implement such measures to maintain eligibility for coverage under this permit. 3.8 Copy of Permit Requirements Copies of this permit and of the signed and certified NOI form that was submitted to EPA must be included in the SWPPP. Also, upon receipt, a copy of the letter from the EPA Storm Water Notice Processing Center notifying you of their receipt of your administratively complete NOI must also be included as a component of the SWPPP. 3.9 Applicable State, Tribal, or Local Programs The SWPPP must be consistent with all applicable federal, state, tribal, or local requirements for soil and erosion control and storm water management, including updates to the SWPPP as necessary to reflect any revisions to applicable federal, state, tribal, or local requirements for soil and erosion control. 3.10 Inspections A. Inspections must be conducted in accordance with one of the two schedules listed below. You must specify in your SWPPP which schedule you will be following. 1. At least once every 7 calendar days, OR 2. At least once every 14 calendar days and within 24 hours of the end of a storm event of 0.5 inches or greater. B Inspection frequency may be reduced to at least once every month if: 1. The entire site is, temporarily stabilized, 2. Runoff is unlikely due to winter conditions (e.g., site is covered with snow, ice, or the ground is frozen), or 3. Construction is occurring during seasonal arid periods in and areas and semi -arid areas. C. A waiver of the inspection requirements is available until one month before thawing conditions are expected to result in a discharge if all of the following requirements are met: 1. The project is located in an area where frozen conditions are anticipated to continue for extended periods of time (i.e., more than one month); 2. Land disturbance activities have been suspended; and 3. The beginning and ending dates of the waiver period are documented in the SWPPP. D. Inspections must be conducted by qualified personnel (provided by the operator or cooperatively by multiple operators). "Qualified personnel" means a person knowledgeable in the principles and practice of erosion and sediment controls who possesses the skills to assess conditions at the construction site that could impact Small and Large Construction Activities 10 General Permit storm water quality and to assess the effectiveness of any sediment and erosion control measures selected to control the quality of storm water discharges from the construction activity. E. Inspections must include all areas of the site disturbed by construction activity and areas used for storage of materials that are exposed to precipitation. Inspectors must look for evidence of, or the potential for, pollutants entering the storm water conveyance system. Sedimentation and erosion control measures identified in the SWPPP must be observed to ensure proper operation. Discharge locations must be inspected to ascertain whether erosion control measures are effective in preventing significant impacts to waters of the United States, where ai;cessible. Where discharge locations are Inaccessible, nearby downstream locations must be inspected to the extent that such inspections are practicable. Locations where vehicles enter or exit the site must be inspected for evidence of off -site sediment tracking. F. Utility line installation, pipeline construction, and other examples of long, narrow, linear construction activities may limit the access of inspection personnel to the areas described in Subpart 3.10.E above. Inspection of these areas could require that vehicles compromise temporarily or even permanently stabilized areas, cause additional disturbance of soils, and increase the potential for erosion. in these circumstances, controls must be inspected on the same frequencies as other construction projects, but representative Inspections may be performed. For representative inspections, personnel must inspect controls along the construction site for 0.25 mile above and below each access point where a roadway, undisturbed right-of-way, or other similar feature intersects the construction site and allows access to the areas described above. The conditions of the controls along each inspected. 0.25 mile segment may be considered as representative of the condition of controls along that reach .extending from the end of the 0.25 mile segment to either the end of the next 0.25 mile inspected segment, or to the and of the project, whichever occurs first. G. For each inspection required above, you must complete an inspection report: At a minimum, the inspection report must include: 1. The inspection date; 2. Names, titles, and qualifications 6f personnel making the inspection; 3. Weather information for the period since the last inspection (or since commencement of construction activity if the first inspection) including a best estimate of the beginning of each storm event, duration of each storm event, approximate amount of rainfall for each storm event (in inches), and whether any discharges occurred; 4. Weather information and a description of any discharges occurring at the time of the inspection; 5. Location(s) of discharges of sediment or other pollutants from the site; 6. Location(s) of BMPs that need to be maintained; 7. Location(s) of BMPs that failed to operate as designed or proved inadequate for a particular location; 8. Location(s) where additional BMPs are needed that did not exist at the time of inspection; and 8. Corrective action required Including any changes to the SWPPP necessary and Implementation dates. A record of each inspection and of any actions taken in accordance with this Part must be retained as part of the SWPPP for at least three years from the date that permit coverage expires or is terminated. The inspection reports must identify any incidents of non-compliance with the permit conditions. Where a report does not identify any incidents of non-compliance, the report must contain a certification that the construction project or site is in compliance with the SWPPP and this permit. The report must be signed in accordance with Appendix G, Section 11 of this permit. 3A1 Maintaining an Updated Plan A. The SWPPP, including the site map, must be amended whenever there is a change in design, construction, operation, or maintenance at the construction site that has or could have a significant effect on the discharge of pollutants to the waters of the United States that has not been previously addressed in the SWPPP. B. The SWPPP must be amended if during inspections or investigations by site staff, or by local, state, tribal or federal officials, it is determined that the SWPPP is ineffective in eliminating or significantly minimizing pollutants in storm water discharges from the construction site. C. Based on the results of an inspection, the SWPPP must be modified as necessary to include additional or modified BMPs designed to correct problems identified. Revisions to the SWPPP must be completed within 11 Small and Large Construction Acdvities Genera! Permit seven m calendar days following the inspection. Implementation of these additional or modified BMPs must be accomplished as described in Subpart 3.6.6. 3.12 Signature, Plan Review and Making Plans Available A. A copy of the SWPPP (including a copy of the permit), NOI, and acknowledgement letter from EPA must be retained at the construction site (or other location easily accessible during normal business hours to EPA, a state, tribal or local agency approving sediment and erosion plans, grading plans, or storm water management plans; local government officials; the operator of a municipal separate storm sewer receiving discharges from the site; and representatives of the U.S. Fish and Wildlife Service or the National Marine Fisheries Service) from the date of commencement of construction activities to the date of final stabilization. If you have day -today operational control over SWPPP implementation, you must have a copy of the SWPPP available at a central location on -site for the use of all those identified as having responsibilities under the SWPPP whenever they are on the construction site. If an on -site location is unavailable to store the SWPPP when no personnel are present, notice of the plan's location must be posted near the main entrance at the construction site. B. A sign or other notice must be posted conspicuously near the main entrance of the construction site. If displaying near the main entrance is infeasible, the notice can be posted in a local public building such as the town hall or public library. The sign or other notice must contain the following information: 1. A copy of the completed Notice of Intent as submitted to the EPA Storm Water Notice Processing Center; and 2. If the location of the SWPPP or the name and telephone number of the contact person for scheduling SWPPP viewing times has changed (i.e., is different than that submitted to EPA in the NOI), the curre times. nt location of the SWPPP and name and telephone number of a con tact person for scheduling viewing For linear projects, the sign or other notice must be posted at a publicly accessible location near the active part of the construction project (e.g., where a pipeline project crosses a public road). C. SWPPPs must be made available upon request by EPA; a state, tribal or local agency approving sediment and erosion plans, grading plans, or storm water management plans; local government officials; the operator of a municipal separate storm sewer receiving discharges from the site; and representatives of the U.S. Fish and Wildlife Service or the National Marine Fisheries Service to the requestor. The copy of the SWPPP that is required to be kept on -site or locally available must be made available, in its entirety, to the EPA staff for review and copying at the time of an on -site inspection. D. All SWPPPs must be signed.and certified in accordance with Appendix G, Section 11. 3.13 Management Practices A. All control measures must be properly selected, installed, and maintained in accordance with any relevant manufacturer specifications and good engineering practices. If periodic inspections or other information indicates a control has been used inappropriately, or incorrectly, the operator must replace or modify the control for site situations as soon as practicable. B. If sediment escapes the construction site, off -site accumulations of sediment must be removed at a frequency sufficient to minimize off -site impacts. C. Litter, construction debris, and construction chemicals that could be exposed to storm water must be prevented from becoming a pollutant source in storm water discharges. D. Except as provided below, stabilization measures must be initiated as soon as practicable in portions of the site where construction activities have temporarily or permanently ceased, but in no case more than 14 days after the construction activity in that portion of the site has temporarily or permanently ceased. 1. Where stabilization by the 14th day is precluded by snow cover or frozen ground conditions, stabilization measures must be initiated as soon as practicable. 2. Where construction activity on a portion of the site is temporarily ceased, and earth disturbing activities will be resumed within 14 days, temporary stabilization measures do not have to be initiated on that portion of the site. Small and Large Construction Activities 12 General Permit 3. In arid, semiarid, and drought -stricken areas where initiating perennial vegetative stabilization measures is not possible within 14 days after construction activity has temporarily or permanently ceased, final vegetative stabilization measures must be initiated as soon as practicable. E. A combination of sediment and erosion control measures are required to achieve maximum pollutant removal. 1. Sediment Basins: For common drainage locations that serve an area with 10 or more acres disturbed at one time, a temporary (or permanent) sediment basin that provides storage for a calculated volume of runoff from the drainage area from a 2-year, 24-hour storm, or equivalent control mepsures, must be provided where attainable until final stabilization of the site. Where no such calculation has been performed, a temporary (or permanent) sediment basin providing 3,600 cubic feet of storage per acre drained, or equivalent control measures, must be provided where attainable until final stabilization of the site. When computing the number of acres draining into a common location, it is not necessary to include flows from offsite areas and flows from on -site areas that are either undisturbed or have undergone final stabilization where such flows are diverted around both the disturbed area and the sediment basin. In determining whether installing a sediment basin is attainable, the operator may consider factors such as site soils, slope, available area on -site, etc. In any event, the operator must consider public safety, especially as it relates to children, as a design factor for the sediment basin, and alternative sediment controls must be used where site limitations would preclude a safe design. 2. For drainage locations which serve 10 or more disturbed acres at one time and where a temporary sediment basin or equivalent controls is not attainable, smaller sediment basins and/or sediment traps should be used. At a minimum, silt fences, vegetative buffer strips, or equivalent sediment controls are required for all down slope boundaries (and for those side slope boundaries deemed appropriate as dictated by individual site conditions). 3. For drainage locations serving less than 10 acres, smaller sediment basins and/or sediment traps should be used. At a minimum, silt fences, vegetative buffer strips, or equivalent sediment controls are required for all down slope boundaries (and for those side slope boundaries deemed appropriate as dictated by individual site conditions) of the construction area unless a sediment basin providing storage for a calculated volume of runoff from a 2-year, 24-hour storm or 3,600 cubic feet of storage per acre drained is provided. F. Velocity dissipation devices must be placed at discharge locations and along the length of any outfall channel to provide a non -erosive flow velocity from the structure to a water course so that the natural physical and biological characteristics and functions are maintained and protected (e.g., no significant changes in the hydrological regime of the receiving water). 3.14 Documentation of Permit Eligibility Related to Total Maximum Daily Loads The SWPPP must include documentation supporting a determination of permit eligibility with regard to waters that have an EPA -established or approved TMDL, including: A. Identification of whether your discharge is identified, either specifically or generally, in an EPA -established or approved TMDL and any associated allocations, requirements, and assumptions identified for your discharge; B. Summaries of consultation with State or Federal TMDL authorities on consistency of SWPPP conditions with the approved TMDL; and C. Measures taken by you to ensure that your discharge of pollutants from the site is consistent with the assumptions and requirements of the EPA -established or approved TMDL, including any specific wasteload allocation that has been established that would apply to your discharge. See section 1.3.C.5 for further information on determining permit eligibility related to TMDLs. PART 4: SPECIAL CONDITIONS, MANAGEMENT PRACTICES AND OTHER NON -NUMERIC LIMITATIONS 4.1 Continuation of the Expired General Permit If this permit is not reissued or replaced prior to the expiration date, it will be administratively continued in accordance with the Administrative Procedure Act and remain in force and effect. If you were granted permit coverage prior to the expiration date, you will automatically remain covered by the continued permit until the earliest of: Small and Large Construction Activities 13 General Permit A. Reissuance or replacement of this permit, at which time you must comply with the conditions of the new permit to maintain authorization to discharge; or B. Your submittal of a Notice of Termination; or C. Issuance of an individual permit for the project's discharges; or D. A formal permit decision by EPA to not reissue this general permit, at which time you must seek coverage under an alternative general permit or an individual permit. 4.2 Requiring an Individual Permit or an Alternative General Permit A. EPA may require you to apply for and/or obtain either an individual NPDES permit or an alternative NPDES general permit. Any interested person may petition EPA to take action under this paragraph. If EPA requires you to apply for an individual NPDES permit, EPA will notify you in writing that a permit application is required. This notification will include a brief statement of the reasons for this decision and an application form. In addition, if you are an existing permittee covered under this permit, the notice will set a deadline to file the application, and will include a statement that on the effective date of issuance or denial of the individual NPDES permit or the alternative general permit as it applies to you, coverage under this general permit will automatically terminate. Applications must be submitted to EPA at the applicable EPA Regional offices listed in Appendix B of this permit. EPA may grant additional time to submit the application upon your request. If you are covered under this permit and you fail to submit in a timely manner an Individual NPDES permit application as required by EPA, then the applicability of this permit to you is automatically terminated at the end of the day specked by EPA as the deadline for application submittal. B. You may request to be excluded from the coverage of this general permit by applying for an individual permit. In such a case, you must submit an individual application in accordance with the requirements of 40 CFR §122.26(c)(1)(11), with reasons supporting the request, to EPA at the applicable EPA Regional office listed in Appendix B of this permit. The request may be granted by issuance of an individual permit or an alternative general permit if your reasons are adequate to support the request. C. When an individual NPDES permit is issued to you, who are otherwise subject to this permit, or you are authorized to discharge under an alternative NPDES general permit, the applicability of this permit to you is automatically terminated on the effective date of the individual permit or the date of authorization of coverage under the alternative general permit, whichever the case may be. If you, who are otherwise subject to this permit, are denied an individual NPDES permit or an alternative NPDES general permit, the applicability of this permit to you is automatically terminated on the date of such denial, unless otherwise specked by EPA. 4.3 Releases In Excess of Reportable Quantities The discharge of hazardous substances or oil in storm water discharges from the construction site must be prevented or minimized in accordance with the SWPPP. This permit does not relieve you of the federal reporting requirements of 40 CFR Part 110, 40 CFR Part 117 and 40 CFR Part 302 relating to spills or other releases of oils or hazardous substances. Where a release containing a hazardous substance or oil in an amount equal to or in excess of a reportable quantity established under either 40 CFR Part 110, 40 CFR Part 117 or 40 CFR Part 302, occurs during a 24-hour period: - you must provide notice to the National Response Center (NRC) (800-424-8802; in the Washington. DC, metropolitan area call 202-426-2675) in accordance with the requirements of 40 CFR Part 110, 40 CFR Part 117 and 40 CFR Part 302 as soon as site staff have knowledge of the discharge; and - you must modify the SWPPP as required under Subpart 3.11 within 7 calendar days of knowledge of the release to: provide a description of the release, the circumstances leading to the release, and the date of the release. Plans must identify measures to prevent the reoccurrence of such releases and to respond to such releases. 4.4 Spills This permit does not authorize the discharge of hazardous substances or oil resulting from an on -site spill. Small and Large Construction Activities 14 General Permit 4.5 Attainment of Water Quality Standards After Authorization A. You must select, install, implement and maintain BMPs at your construction site that minimize pollutants in the discharge as necessary to meet applicable water quality standards. In general, except in situations explained in Subpart 4.5.13 below, your SWPPP developed, implemented, and updated consistent with Part 3.0 is considered as -stringent as necessary to ensure that your discharges do not cause or contribute to an excursion above any applicable water quality standard. B. At any time after authorization, EPA may determine that your storm water discharges may cause, have reasonable potential to cause, or contribute to an excursion above any applicable water quality standard. if such a determination is made, EPA will require you to: L Develop a supplemental BMP action plan describing SWPPP modifications in accordance with Subpart 3.11 to address adequately the identified water quality concerns; ii. Submit valid and verifiable data and information that are representative of ambient conditions and indicate that the receiving water is attaining water quality standards; or III. Cease discharges of pollutants from construction activity and submit an inlMdual permit application according to Subpart 4.2. All written responses required under this part must include a signed certification consistent with Appendix G, Section 11. PART 5: TERMINATION OF COVERAGE 5.1 Requirements You may only submit a Notice of Termination (NOT) after one or more of the following conditions have been met: A. Final stabilization has been achieved on all portions of the site for which you are responsible; B. Another pperator has assumed control according to Appendix G, Section 11.0 over all areas of the site that have not'been finally stabilized; C. Coverage under an individual or alternative general NPDES permit has been obtained; or D. For residential construction only, temporary stabilization has been completed and the residence has been transferred to the homeowner. The NOT must be submitted within 30 days of one of the above conditions being met. Authorization to discharge terminates at midnight of the day the NOT is signed. 5.2 Submitting a Notice of Termination it is your responsibility to submit a complete and accurate Notice of Termination (NOT), using the form provided in Appendix F (or a photocopy thereof) available at eaa aov/npdes/stormwater/cap. If EPA notifies dischargers (either directly, by public notice, or by making information available on the Internet) of other NOT form options (e.g., electronic submissiqn), you may take advantage of those options to satisfy the requirements of Part 5. A. The Notice of Termination must include the following information: 1. The NPDES permit tracking number for the storm water discharge; 2. The basis for submission of the NOT, including: final stabilization has been achieved on all portions of the site for which the permittee is responsible; another operator/permittee has assumed control over all areas of the site that have not been finally stabilized; coverage under an alternative NPDES permit has been obtained; or, for residential construction only, temporary stabilization has been completed and the residence has been transferred to the homeowner; 3. You, the operator's name, address, telephone number and your organization's Employer Identification Number (EIN) as established by the U.S. Internal Revenue Service; 4. The name of the project and address (or a description of location if no street address is available) of the construction site for which the notification is submitted; and 5. A certification statement, signed and dated by an authorized representative as defined in Appendix G, Section 11 and the name and title of that authorized representative. 15 Small and Large Construction Activities 5.3 Where to Submit A. All NOTs must be submitted to one of the following addresses: For Regular U.S. Mail Delivery: EPA Storm Water Notice Processing Center Mail Code 4203M U.S. EPA 1200 Pennsylvania Avenue, NW Washington, DC 20460 General Permit For Overnioht/EXoresS Mail Deliver} EPA Storm Water Notice Processing Center Room 7420 U.S. EPA 1201 Constitution Avenue, NW Washington, DC 20004 B. In lieu of Subpart 5.3.A, you can submit your NOT to EPA using EPA's electronic system (i.e., eNOI), when available. Check www.eoa.gov/npdes/stormwater/cgg for updates. PART 6: RETENTION OF RECORDS Copies of the SWPPP and all documentation required by this permit, including records of -all data used to complete the NOI to be covered by this permit, must be retained for at least three years from the date that permit coverage expires or is terminated. This period may be extended by request of EPA at any time. PART 7: REOPENER CLAUSE 7.1 Procedures for Modification or Revocation Permit modification or revocation will be conducted according to 40 CFR §122.62, §122.63, §122.64 and §124.5. 7.2 Water Quality Protection If there is evidence indicating that the storm water discharges authorized by this permit cause, have the reasonable potential to cause or contribute to an excursion above any applicable water quality standard, you may be required to obtain an individual permit in accordance with Part 4.5 of this permit, or the permit may be modified to include different limitations and/or requirements. 7.3 Timing of Permit Modification EPA may elect to modify the permit prior to its expiration (rather than waiting for the new permit cycle) to comply with any new statutory or regulatory requirements, such as for effluent limitation guidelines, that may be promulgated in the course of the current permit cycle. PART 8: STANDARD PERMIT CONDITIONS The federal regulations require that the Standard Conditions provisioned at 40 CFR §122.41 be applied to all NPDES permits. You are required to comply with those Standard Conditions, details of which are provided in Appendix G. PART 9: PERMIT CONDITIONS APPLICABLE TO SPECIFIC STATES, INDIAN COUNTRY, OR TERRITORIES The provisions of this Part provide modifications or additions to the applicable conditions of this permit to reflect specific additional conditions required as part of the state or tribal CWA Section 401 certification process, or the Coastal Zone Management Act (CZMA) certification process, or as otherwise established by the permitting authority. The specific additional revisions and requirements only apply to activities in those specific states, Indian country, and federal facilities. States, Indian country, and federal facilities not included in this Part do not have any modifications or additions to the applicable conditions of this permit. State Coastal Zone Management Act (CZMA) certification was not received from Massachusetts in time for that state to be included in this permit. As such, large construction activities in Massachusetts covered under the 1998 CGP will continue to be covered under that permit. EPA will reissue the CGP for Massachusetts for large and small construction activities at a later date, and will include any state -specific modifications or additions as part of the State's CZMA certification process. Small and Large Construction Activities 16 General Permit A. Region 1 1. MAR100000: Commonwealth of Massachusetts, except Indian country a. State Water Quality Statutes, Regulations, and Policies: i. You must comply with the Massachusetts Clean Waters Act (Ch. 21, ss. 23-56). ii. You must comply with the conditions in 314 CMR 4.00 - Surface Water Quality Standards. iii. You must comply with the conditions in 314 CMR 3.00 - Surface Water Discharge Permit Program. iv. You must comply with the Wetlands Protection Act, Ch. 131, s. 40 and its regulations, 310 CMR 10.00 and any order of Conditions issued by a Conservation Commission or a Superseding Order of Conditions issued by the Massachusetts Department of Environmental Protection. b. Department of Environmental Protection Storm Water Management Policy: i. You must comply with the Massachusetts Storm Water Management Policy, March 1997 and applicable Storm Water Performance Standards, as prescribed by state regulations promulgated under the authority of the Massachusetts Clean Waters Act, MGL Ch. 21, ss. 23-56 and the Wetlands Protection Act Ch. 131, s. 40. c. Other State Environmental Laws, Regulations, Policies: i. You must comply with the Massachusetts Endangered Species Act [MESA].(MGL Ch. 313A and regulations at 321 CMR 10.00) and any actions undertaken to comply with this storm water permit, shall not result in non-compliance with the MESA. ii. You must not conduct activities under this permit that will interfere with implementation of mosquito control work conducted in accordance with Chapter 252 including, s. 5A thereunder and DEP Guideline Number BRP G01-02, West Nile Virus Application of Pesticides to Wetland Resource Areas and Buffer Zones, and Public Water Systems. d. Other Department Directives: i. The Department may require you to perform water quality monitoring during the permit term if monitoring is necessary for the protection of public health or the environment as designated under the authority at 314 CMR 3.00. ii. The Department may require you to provide measurable verification of the effectiveness of BMPs and other control measures in your management program, including water quality monitoring. iii. The Department has determined that compliance with this permit does not protect you from enforcement actions deemed necessary by the Department under its associated regulations to address an imminent threat to the public health or a significant adverse environmental Impact which results in a violation of the Massachusetts Clean Waters Act, Ch. 21, ss. 26-53. iv. The Department reserves the right to modify the 401 Water Quality Certification if any changes, modifications or deletions are made to the general permit. In addition, the Department reserves the right to add and/or alter the terms and conditions of its 401 Water Quality Certification to carry out Its responsibilities during the term of this permit with respect to water quality, including any revisions to 314 CMR 4.00, Surface Water Quality Standards. Permit Compliance i. Should any violation of the Massachusetts Surface Water Quality Standards (314 CMR 4.00) or the conditions of this certification occur, the Department will direct you to correct the violations(s). The Department has the right to take any action as authorized by the General Laws of the Commonwealth to address the violation of this permit or the MA Clean Waters Act and the regulations promulgated thereunder. Substantial civil and criminal penalties are authorized under MGL Ch*. 21, s. 42 for discharging into Massachusetts' waters in violation of an order or permit issued by this Department. This certification does not relieve the you of the duty to comply with other applicable Massachusetts statutes and regulations. 2. NHR100000: State of New Hampshire a. If you disturb 100,000 square feet or more of contiguous area, you must also apply for a "Significant Alteration of the Terrain Permit from DES pursuant to RSA 485-A:17 and Env -Ws 415. This requirement Small and Large Construction Activities 17 General Permit applies to the disturbances of only 50,000 square feet when construction occurs within the protected shoreline (see RSA 483-B and Env -Ws 1400). b. You must determine that any excavation dewatering discharges are not contaminated before they will be authorized as an allowable non -storm water discharge under this permit (see Subpart 1.3.13). The water is considered uncontaminated if there is no groundwater contamination within 1,000 feet of the discharge. Information on groundwater contamination can be generated over the Internet via the NHDES web site www.des.state.nh.us (One Stop Data Retrieval, Onestop Master Site Table). The web site also provides E-mail access to an NHDES Site Remediation Contact to answer questions about using the Web site. c. You must treat any uncontaminated excavation dewatering discharges as necessary to remove suspended solids and turbidity. The discharges must be sampled at a location prior to mixing with storm water at least once per week during weeks when discharges occur. The samples must be analyzed for total suspended solids (TSS) and must meet monthly average and maximum daily TSS limitations of 50 milligrams per liter (mg/L) and 100 mg/L, respectively. TSS (a.k.a. Residue, Nonfilterable) analysis and sampling must be performed in accordance with Tables IB (parameter, units and method) and II (required containers, preservation techniques and holding times) in 40 CFR 136.3 (see: http://www.access,apo.gov/nara/cfr/waisidx 02/40cfr136 02.html). Records of any sampling and analysis must be maintained and kept with the SWPPP for at least three years after final site stabilization. d. During site design and preparation of the storm water pollution prevention plan (SWPPP), you must consider opportunities for groundwater recharge using on -site infiltration. The SWPPP must include a description of any on=site infiltration that will be installed as a post construction' storm water management measure (see Subpart 3.4.E) or reasons for not employing such measures. For design considerations for infiltration measures see the September 2001 DES publication titled "Managing Storm Water as a Valuable Resource" which is available online at: www.des.state.nh.us/StormWater/construction.htm. Loss of annual recharge to groundwater should be minimized through the use of Infiltration measures wherever feasible. B. Region 2 1. NYR100001: Indian country within the State of New York St. Regis Mohawk Territory at Akwesasne a. NOls shall also be submitted to the St. Regis Mohawk Tribe, Environment Division, at the same time they are submitted to EPA, at the following address: St. Regis Mohawk Tribe, Environment Division 412 State Route 37 Akwesasne, NY 13655 Attn: Clean Water Program Manager. b. In addition, Storm Water Pollution Prevention Plans (and any updates or amendments thereto) must be submitted to the Environment Division and to the Tribal Historic Preservation Officer at least thirty (30) days in advance of corresponding Notices of Intent. This will allow the Environment Division and the THPO to make an informed determination as to whether any proposed discharges might adversely impact the quality of its surface or groundwater, or disturb sites of historic or cultural significance to the Tribe that may be listed, or eligible to be listed, on the National Register of Historic Places. c. Within 10 days of the inspection required under Subpart 3.10.G of this permit, the permittee shall provide a copy of the Inspection Report to the Environment Division. C. Region 6 1. NMR150000: The State of New Mexico, except Indian country NOTE: Conditions in the New Mexico Environment Department (NMED) certification of the permit resulted in permit requirements adding further restrictions on eligibility for discharges to Outstanding National Resource Waters (ONRWs), expanding on requirements for pollution prevention plans, and limiting options provided in the permit related to inspection frequency and final stabilization. a. In addition to all other provisions of this permit, operators who intend to obtain authorization under this permit for all new storm water discharges must satisfy the conditions in Subpart 9.C.1.a.i, unless a TMDL has been established for the receiving stream which specifies a waste load allocation (WLA) for Small and Large Construction Activities 18 General Permit construction storm water discharges or the receiving stream is a Tier 3 water, in which case Subpart 9.C.1.a.ii applies. The operator must include a Sediment Control Plan (SCP) as a part of the Storm Water Pollution Prevention Plan (SWPPP). The SCP must include site -specific interim and permanent stabilization, managerial, and structural solids, erosion, and sediment control BMPs and/or other controls that are designed to prevent an increase in the sediment yield and flow velocity from pre -construction, undisturbed conditions. This applies to discharges both during construction and after construction operations have been completed. The SCP must identify, and document the rationale for selecting these BMPs and/or other controls. The SCP must also describe design specifications, construction specifications, maintenance schedules (including a long term maintenance plan), criteria for inspections, as well as expected performance and longevity of the BMPs. Using appropriate soil loss prediction models (such as SEDCAD 4.0, RUSLE, SEDIMONT 11, MULTISED, etc.), the operator(s) must demonstrate, and include documentation in the SCP, that implementation of the site -specific practices will result in sediment yields that will not be greater than the sediment yield levels from pre - construction, undisturbed conditions. The SCP must be prepared in accordance with good engineering practices and certified by a registered professional engineer. The operator(s) must design, implement, and maintain BMPs in the manner specified in the SCP and the SWPPP. ii. Operators are not eligible to obtain authorization under this permit for all new storm water discharges to outstanding national resource waters (ONRWs) (also referred to as 'Tier 3: waters). According to the Antidegradation Policy at Paragraph 3 of Subsection A of 20.6.4.8 NMAC, in part, "ONRWs may include, but are not limited to, surface waters of the state within national and state monuments, parks, wildlife refuges, waters of exceptional recreational or ecological significance, and waters identified under the Wild and Scenic Rivers Act.' No ONRWs exist at the time this permit is being finalized; however, during the term of the permit, if a receiving water is designated as an ONRW, the operator must obtain an individual permit for storm water discharges from large and small construction activities. b. Storm water discharges associated with industrial activity to Clean Water Act section 303(d) waters as well as all other 'waters of the State' that the New Mexico Environment Department, Surface Waters Quality Bureau (SWQB) has determined to be or may reasonably be expected to be contributing to a violation of a water quality standard and/or that do not comply with the applicable anti -degradation provisions of the State's WQS are not authorized by this permit. Note: Upon receipt of this determination, NMED anticipates that, within a reasonable period of time, EPA will notify the general pennittee to apply for and obtain an Individual NPDES permit for these discharges per 40 CFR Part 12228(b)(3). c. Inspections required under Subpart 3.10 must be conducted at least once every 14 calendar days and within 24 hours of the end of a storm event of 0.5 inches or greater. The option for inspections at least once per 7 calendar days is not available. The Inspection Waivers provided in Parts 3.10.E and C still apply. d. Permittees can not use temporary erosion controls as described in item 3 of the Appendix A definition of "Final Stabilization"as a method for final stabilization under the permit. e. Signed copies of discharge monitoring reports, individual permit applications, and all other reports required by the permit to be submitted, shall also be sent to: Program Manager Point Source Regulation Section Surface Water Quality Bureau New Mexico Environment Department P.O. Box 26110 Santa Fe, NM 87502 2. NMR150001: Indian country within the State of New Mexico, except Navajo Reservation Lands that are covered under Arizona permit AZR100001 and Ute Mountain Reservation Lands that are covered under Colorado permit COR100001 a. Pueblo of Acoma The following conditions apply only to discharges on the Pueblo of Acoma. Small and Large Construction Activities 19 General Permit i. A copy of the storm water pollution prevention plan, Notice of Intent, and Notice of Termination must be submitted to the Haaku Water Office at the address below. The pollution prevention plan must be submitted to the Pueblo at least thirty (30) days in advance of submitting the Notice of Intent to EPA. HAAKU WATER OFFICE Pueblo of Acoma P.O. Box 309 Pueblo of Acoma, NM 87034 b. Pueblo of Isleta The following conditions apply only to discharges on the Pueblo of Isleta. I. Subpart 1.3.C.4, (Eligibility, Limitations on Coverage) first sentence, is revised to read: 'This permit does not authorize discharges that EPA or the Pueblo of Isleta, prior to authorization under this permit, determines will cause, have the reasonable potential to cause, or contribute to an excursion above any applicable water quality standard or impairment of a designated use of receiving waters." Subpart 2.4. (Where to Submit) is amended to add the following section (2.4.C): C. Copies of all Notices of Intent submitted to EPA must also be sent conCUrrently to the Pueblo of Isleta at the following address. Discharges are not authorized by this permit unless an accurate and complete Notice of Intent has been submitted to the Pueblo of Islet Regular U.S. Mail Delivery OR Ovemight/Exr)ress Mail Delivery Environment Department Environment Department Pueblo of Isleta Building L P.O. Box 1270 11000 Broadway, SE Isleta, NM 87022 Albuquerque, NM 87105 iii. Part 2 (Authorizations for Discharges of Storm Water from Construction Activity), second sentence, is amended to read: " Discharges are not authorized if your NOI is incomplete or inaccurate, if you failed to submit a copy of the NOI to the Pueblo of Isleta, or if you were never eligible for perry #,t poverage. iv. Subpart 3.4. (Pollution Prevention Plan Contents: Controls to Reduce Pollutants), section:Alast sentence, is amended to read: 'For each major activity identified in the project descriptionie SWPPP must clearly describe appropriate control measures, the general sequence during the construction process in which the measures will be implemented, and which operator is responsible for the control measure's implementation and maintenance." v. Subpart 3.8 (Copy of Permit Requirements), first sentence, is revised to read 'Copies of this permit and of the signed and certified NOI form that was submitted to the Pueblo of Isleta and EPA must be included in the SWPPP." A. Subpart 3.10.(Inspections), section A is revised to read "Inspections must be conducted at least once every 7 calendar days and within 24 hours of the end of a storm event of 0.5 inches or greater." vii. Subpart 3.10. (Inspections), section G, last paragraph, is amended to add: "Copies of inspection reports that identify incidents of noncompliance shall be sent to Pueblo of Isleta at the address listed in Subpart 2A.C." (See above) viii. Subpart 3.12. (Signature, Plan Review and Making Plans Available), section A, first sentence is amended to read: "A copy of the SWPPP (including a copy of the permit) must be retained at the construction site (or other location easily accessible during normal business hours to the Pueblo of Isleta's Environmental Department, EPA, a state, tribal or local agency approving sediment and erosion plans, grading plans, or storm water management plans; local government officials; the operator of a municipal separate storm sewer receiving discharges from the site; and representatives of the U.S. Fish and Wildlife Service or the National Marine Fisheries Service) from the date of commencement of construction activities to the date of final stabilization." ix. Subpart 3.12. (Signature, Plan Review and Making Plans Available), section C. is amended to read: "SWPPPs must be made available upon request by EPA; representatives of the Pueblo of Isleta Environment Department, a state, tribal or local agency approving sediment and erosion plans, grading plans, or storm water management plans; local government officials; the operator of a municipal separate storm sewer receiving discharges from the site; and representatives of the U.S. Fish and Wildlife Service or the National Marine Fisheries Service to the requestor. The copy of the Small and Large Construction Activities 20 General Permit SWPPP that is required to be kept on -site or locally available must be made available, in its entirety, to the EPA staff and the Pueblo of Islets's Environment Department staff for review and copying at the time of an on -site inspection. x. Subpart 3.13. (Management Practices), section A is amended to add: 'Erosion and sediment controls shall be designed to retain sediment on -site.' A. Subpart 4.3 (Releases in Excess of Reportable Quantities), first bullet is amended to read: "you must provide notice to the Pueblo of Islets Environment Department (505-869-5748) and the National Response Center (NRC) (800-424-8802; in the Washington, DC, metropolitan area call 202-426- 2675) in accordance with the requirements of 40 CFR Part 110, 40 CFR Part 117 and 40 CFR Part 302 as soon as site staff have knowledge of the discharge; and' xii. Subpart 4.5 (Attainment of Water Quality Standards After Authorization), is amended to add the following fourth bullet: You must provide the Pueblo of Islets, at the address listed in Subpart 2.4.C, with a copy of the EPA notification, the supplemental action plan, data and certification required by EPA." xiii. Subpart 5.3. (Where to Submit) is amended to add the following section (5.3.C): C. Copies of all Notices of Termination submitted to EPA must also be sent concurrently to the Pueblo of Islets at the following address. Regular U.S.- Mail Delivery OR Ovemight/Express Mail Delivery Environment Department Pueblo of Islets P.O. Box 1270 Islets, NM 87022 Environment Department Building L 11000 Broadway, SE Albuquerque, NM 87105 xiv. Any correspondence, other than NOls and NOTs, with the Pueblo of Islets concerning storm water discharges authorized by this permit shall sent one of the addresses in Subpart 5.3.0 (see above). xv. Appendix G, Section 9, first sentence is amended to read: 'You must allow the Pueblo of Islets's Environment Department, EPA, or an authorized representative (including an authorized contractor acting as a representative of the Administrator), upon presentation of credentials and other documents as may be required by law, to:" xvi. Appendix G, Section 12, subsections A, B, C. F, G and H are amended to require that when you must notify EPA of an event (e.g., planned changes, anticipated noncompliance, transfers, required reporting due to potential adverse effects or environmental impacts or other noncompliance matters), the Pueblo of Islets must also be notified. xvil. Parties wishing to apply for an Equivalent Analysis Waiver (see Appendix D, Section C) must provide a copy of the waiver analysis to the Pueblo of Islets at the address specified in Subpart 5.3.0 (See above) at the time it is submitted to EPA. c. Pueblo of San Juan. The following conditions apply only to discharges on the Pueblo of San Juan. i. Copies of the Notice of Intent (NOI) and Notice of Termination (NOT) must be provided to the Pueblo at the time it is provided to the Environmental Protection Agency, at the following address: Office of Environmental Affairs Pueblo of San Juan P.O. Box 717 San Juan, NM 87566 ii. Appendix G, Section 10 (Monitoring and records), item D is amended to add: "All monitoring must be conducted in accordance with the Pueblo of San Juan's Quality Assurance Project Plan." d. Pueblo of Sandia. The following conditions apply only to discharges on the Pueblo of Sandia. Small and Large Construction Activities 21 General Permit i. Copies of the Notice of Intent (NOI) and Notice of Termination (NOT) must be provided to the Pueblo at the same time it is submitted to the Environmental Protection Agency. Environment Department Pueblo of Sandia Box 6008 Bemalillo, NM B7004 The Storm Water Pollution Prevention Plan must be available to tribal environmental personnel upon request. You must telephone the Pueblo of Sandia Environment Department at (505) 867-4533 of any noncompliance that may endanger human health or the environment within ten (10) hours of becoming aware of the circumstance. e. Santa Clara Pueblo. The following conditions apply only to discharges on the Santa Clara Pueblo. I. Copies of the Notice of Intent (N01) and Notice of Termination (NOT) must bq provided to the Santa Clara Pueblo Office of Environmental Affairs at the same time it is submitted to the Environmental Protection Agency. Santa Clara Pueblo Office of Environmental Affairs One Knee Street P.O. Box 580 Espanola, NM 87532 f. Pueblo of Tesuque The following conditions apply only to discharges on the Pueblo of Tesuque. I. A copy of the storm water pollution prevention plan, Notice of Intent, and Notice of Termination must be submitted to the Pueblo of Tesuque Environment Department at the address below. The Notice of Intent and the Notice of Termination must be submitted at the same time they are submitted to EPA. The pollution prevention plan must be submitted before the project begins. Phone: 505- 983-2667 FAX: 505-982-2331 Pueblo of Tesuque Environment Department Rt. 42, Box 360-T Santa Fe, NM 87506 3. OKR15000F: Discharges in the State of Oklahoma that are not under the authority of the Oklahoma Department of Environmental Quality, including activities associated with oil and gas exploration, drilling, operations, and pipelines (includes SIC Groups 13 and 46, and SIC codes 492 and 5171), and point source discharges associated with agricultural production, services, and silviculture (includes SIC Groups 01, 02, 07, 08,09). a. Subpart 1.3.C. (Limitations on Coverage) is modified to add paragraphs Band 9 as follows: "8. For activities located within the watershed of any Oklahoma Scenic River, including the Illinois River, Flint Creek, Barren Fork Creek, Upper Mountain Fork, Little Lee Creek, and Big Lee Creek or an water or watershed designated "ORW (Outstanding Resource Water) in Oklahoma's Water Quality Standards, this permit may only be used to authorize discharges from temporary construction activities. Discharges from ongoing activities such as sand and gravel mining or any other mineral mining are not authorized. 9. Activities located within the watershed of any Oklahoma Scenic River, including the Illinois River, Flint Creek, Barren Fork Creek, Upper Mountain Fork, Little Lee Creek, and Big Lee Creek or an water or watershed designated "ORW" (Outstanding Resource Water) in Oklahoma's Water Quality Standards, this permit may not be used to authorize discharges from concrete or asphalt batch plants." D. Region 8 1. MTR100001: Indian country within the State of Montana a. Confederated Salish and Kootenai Tribes of the Flathead Nation. The following conditions apply only for projects on the Flathead Indian Reservation: Small and Large Construction Activities 22 General Permit The permittee must send the SWPPP to the Tribes at least 30 days before construction starts. The 30 day period will give Tribal staff time to become familiar with the project site, prepare for construction inspections and determine compliance with Tribal water quality standards, as required by the Tribe's Water Quality Management Ordinance 89B (1990) and Surface Water Quality Standards & Antidegradation Policy (1995). Copies of the SWPPP should be sent to the following address: Confederated Salish and Kootenai Tribes Natural Resources Department Department Head P.O. Box 278 Pablo, MT 59855 ii. Before submitting the Notice of Termination, permittees must clearly demonstrate to an appointed tribal staff person during an on -site inspection that requirements for site stabilization have been met and all temporary erosion control structures removed. The staff person performing the on -site inspection will be determined by the Environmental Protection Division Manager. The staff person will draft a short letter stating the stabilization requirements have been met to add to the permittees Notice of Termination submission to EPA. III. The permittee must send a copy of the Notice of Intent (NOI) and the Notice of Termination (NOT) to the Tribes at the same time that the NOI and NOT is sent to EPA. Copies of the NOI and NOT should be sent to the address above. b. Fort Peck Tribes - Assiniboine & Sioux. The following conditions apply only for projects within the Fort Peck Indian Reservation: The permittee must send a copy of the Notice of Intent (NOI) and the Notice of Termination (NOT) to the Tribes at the same time that the NOI and NOT is sent to EPA. Copies of the NOI and NOT should be sent to the following address: Deb Madison Environmental Program Manager Fort Peck Assiniboine & Sioux Tribes P.O. Box 1027 Poplar, MT 59255 E. Region 9 1. ASR100000: The Island of American Samoa a. Discharges authorized by the general permit shall meet all applicable American Samoa water quality standards. b. Permittees discharging under the general permit shall comply with all conditions of the permit. 2. AZR100001: Indian country lands within the State of Arizona, including Navajo Reservation lands in New Mexico and Utah a. White Mountain Apache Tribe. The following condition applies only for projects on the White Mountain Apache Reservation: All NOls for proposed storm water discharge coverage shall be provided to the following address: Tribal Environmental Planning Office P.O. Box 2109 Whiteriver, AZ 85941 3. NIR100000: Commonwealth of the Northern Mariana Islands (CNMI) a. An Earthmoving and Erosion Control Permit shall be obtained from the CNMI DEQ prior to any construction activity covered under the NPDES general permit. b. All conditions and requirements set forth in the USEPA NPDES general permit for discharges from large and small construction must be complied with. Small and Large Construction Activities 23 General Permit c. A SWPPP for storm water discharges from construction activity must be approved by the Director of the CNMI DEQ prior to the submission of the NOI to USEPA. The CNMI address for the submittal of the SWPPP for approval is: Commonwealth of the Northern Mariana Islands Office of the Governor Director, Division of Environmental Quality (DEQ) P.O. Box 501304 C.K. Saipan, MP 96950-1304 d. An NOI to be covered by the general permit for discharges from large and small construction sites must be submitted to CNMI DEQ (use above address) and USEPA, Region 9, in the form prescribed by USEPA, accompanied by a SWPPP approval letter from CNMI DEQ. e. The NOI must be postmarked seven (7) calendar days prior to any storm water discharges and a copy must be submitted to the Director of CNMI DEQ (use above address) no later than seven (7) calendar days prior to any stormwater discharges. f. Copies of all monitoring reports required by the NPDES general permit must be submitted to CNMI DEQ (use above address). g. In accordance with section 10.3(h) and (1) of the CNMI water quality standards, CNMI DEQ reserves the right to deny coverage under the general permit and to require submittal of an application for an individual NPDES permit based on a review of the NOI or other information made available to the Director. F. Region 10 1. AKR100000: The State of Alaska, except Indian country a. Operators of construction projects disturbing five or more acres occurring outside the Municipality of Anchorage must submit a copy of the Storm Water Pollution Prevention Plan (SWPPP) and a copy of the Notice of Intent (NOI) to the State of Alaska Department of Environmental Conservation (ADEC) for review, and shall be accompanied by the state -required fee of $400. Submittal of the SWPPP and the NOI to the ADEC should be made at the same time the NOI is submitted to the EPA. b. Operators of publicly -funded projects disturbing five or more acres occurring within the Municipality of Anchorage must submit a copy of the SWPPP and a copy of the NOI to the ADEC for review, and shall be accompanied by the state -required fee of $400. Submittal of the SWPPP and the NOI to the ADEC should be made at the same time the NOI is submitted to the EPA. c. Operators of construction projects disturbing at least one acre and less than five acres must submit a copy of the NOI to the ADEC at the same time it is submitted to the EPA. d. Storm Water Pollution Prevention Plans and Notices of Intent must be submitted to ADEC at the following address: Alaska Department of Environmental Conservation Water Quality Permitting/Storm Water 555 Cordova Street Anchorage, Alaska 99501 e. Operators of private construction projects disturbing one or more acres within the Municipality of Anchorage shall submit a copy of the Storm Water Pollution Prevention Plan to the Municipality at the following address: Municipality of Anchorage, Office of Planning Development and Public Works 4700 S. Bragaw Street P.O. Box 196650 Anchorage, Alaska 99519-6650 f. Submittal of the SWPPP to the Municipality of Anchorage should be made before or at the same time the NOI is submitted to the EPA and the ADEC and shall be accompanied by any Municipality -required fee. Small and Large Construction Activities 24 General Permit 2. IDR100000: The State of Idaho, except Indian country a. Any construction related storm water discharges to impaired water bodies on Idaho's Clean Water Act (CWA) Section 303(d) list with EPA -approved Total Maximum Daily Loads (TMDL) must be consistent with any load allocations established by the applicable TMDL. b. No net increase of listed pollutants is allowed in any construction related storm water discharges to an impaired water body considered 'high priority' as included on Idaho's CWA Section 303(d) list that does not yet have an EPA -approved TMDL. c. If a TMDL has not been established for an impaired water body considered "medium priority" or "low priority' as included on Idaho's CWA Section 303(d) list, BMPs shall be employed as necessary to prohibit further impairment of the designated or existing beneficial uses. d. Only BMPs authorized by the appropriate designated agency as defined in the Idaho Water Quality Standards and Wastewater Treatment Requirements (IDAPA 58.01.02 at seq.), or otherwise approved by the Idaho Department of Environmental Quality, will be allowed. e. Use of the "Equivalent Analysis Waiver" in Addendum D is not authorized. f. Operators may contact the Idaho Department of Environmental Quality regional office nearest the . construction activity for more information about impaired waterways: Boise Regional Office: Cascade Satellite Office: Coeur d'Alene Regional Office: 1445 N. Orchard 109 N. Main St., PO Box 247 2110 Ironwood Parkway Boise ID 83706-2-239 Cascade, ID 83611 Coeur d'Alene ID 83814 Tel: (20B)373-0550 Tel: (208)3B2-6BOB Tel: (208)769-1422 Fax: (208)373-0287 Fax: (208)3B2-3327 Fax: (20B)769-1404 e 300 W,,Maln Grangeville ID 83530 Tel: (208)983-080B Fax: (208)983-2873 444 Hospital Way #300 Pocatello ID 83201 Tel: (208)236-6160 Fax: (208)236-6168 7 900 N. Skyline, Suite B Idaho Falls, ID 83402 Tel: (208)528-2650 Fax: (208)528-2895 601 Pole Line Road, Suite 2 Twin Falls, ID 63301 Tel: (208)736-2190 Fax: (206)736-2194 Lewiston Reaional Office: 1118 "F" Street Lewiston, ID 83501 Tel: (208)799-4370 Toll Free: 1-877-541-3304 Fax: (208)799-3451 3. ORR100001: Indian country within the State of Oregon, except Fort McDermitt Reservation lands (see Region 9): Confederated Tribes of the Umatilla Indian Reservation. The following conditions apply only for projects within the exterior boundaries of the Umatilla Indian Reservation: i. The operator shall be responsible for achieving compliance with the Confederated Tribes of the Umatilla Indian Reservation's (CTUIR) Water Quality Standards. ii. The operator j;hall submit all Erosion Control and/or Storm Water Pollution Prevention Plans to the CTUIR Water Resources Program for review and approval by the Department of Natural Resources Director prior to submitting the Notice of Intent to EPA and prior to beginning any discharge activities. iii. The operator shall contact the CTUIR Tribal Historic Preservation Office (THPO) prior to beginning any construction activities to determine whether a cultural resource survey of the project area or other investigation is required. All cultural resource fieldwork must be conducted by qualified personnel and documented using Oregon Reporting Standards. The resulting report must be submitted to the THPO for concurrence at least 30 days before any ground disturbing work can occur at the site. The operator must obtain THPO concurrence in the form of a letter, which (if necessary) will include any measures that must be taken to prevent or mitigate adverse effects to potentially eligible historic properties, prior to any ground disturbing work. iv. The operator shall submit copies of the Notice of Intent to the CTUIR Water Resources Program and the CTUIR Tribal Historic Preservation Office at the same time it is submitted to EPA. Small and Large Construction Activities 25 General Permit v. Erosion Control and Storm Water Pollution Prevention Plans and Notices of Intent shall be submitted to: Confederated Tribes of the Umatilla Indian Reservation Water Resources Program P.O. Box 638 Pendleton, OR 97801 (541) 276-3447 Confederated Tribes of the Umatilla Indian Reservation Cultural Resources Protection Program Tribal Historic Preservation Office P.O. Box 638 Pendleton, OR 97801 (541) 276-3629 Confederated Tribes of Warm Springs. The following conditions apply only for projects on the Warm Springs Indian Reservation: i. All activities covered by this NPDES general permit occurring within a designated riparian buffer zone as established in Ordinance 74 (Integrated Resource Management Plan or IRMP) must be reviewed, approved and permitted through the Tribe's Hydraulic Permit Application process, including payment of any applicable fees. ii. All activities covered by this NPDES general permit must follow all applicable land management and resource conservation requirements specified in the IRMP. Ill. Operators of activities covered by this NPDES general permit must submit a Storm Water Pollution Prevention Plan to the Tribe's Water Control Board at the following address for approval at least 30 days prior to beginning construction activity: Chair, Warm Springs Water Control Board P.O. Box C Warm Springs, Oregon 97761 4. WAR1000OF: Federal Facilities in the State of Washington, except those located on Indian Country The following conditions apply to stormwater discharges from all permitted construction sites which disturb one acre or more and which discharge to surface waters (40 CFR part 122.26(b)(14)(x) and 122.26 (b)(15)): a. Discharges must not cause or contribute to a violation of surface water quality standards (Chapter 173- 201A WAC), sediment management standards (Chapter 173-204 WAC), ground water quality standards (Chapter 173-200 WAC), and human health -based criteria in the National Toxics Rule (Federal Register, Vol. 57, No. 246, Dec. 22, 1992, pages 60848-60923). Discharges that are not in compliance with these standards are not authorized. b. You must apply all known available and reasonable methods of prevention, control and treatment (AKART), including the preparation and implementation of an adequate Stormwater Pollution Prevention Plan (SWPPP), with all appropriate BMPs installed and maintained in accordance with the SWPPP and the terms and conditions of this permit. c. Stormwater BMPs must be properly designed, constructed, maintained and operated to: I. Prevent pollution of state waters and protect water quality, including compliance with applicable state water quality standards; ii. Satisfy state requirements for all known available and reasonable methods of prevention, control and treatment (AKART) of wastes (including construction stormwater runoff) prior to discharge to waters of the state; and iii. Satisfy the federal technology -based treatment requirements under 40 CFR part 125.3. d. You must document the technical basis for the design criteria used to select and design your stormwater management BMPs. You must document within your Stormwater Pollution Prevention Plan (SWPPP) how stormwater BMPs were selected, the pollutant removal performance expected from the BMP being selected, the technical basis (scientific, technical studies, and/or modeling) which support the performance claims for the BMPs being selected, and an assessment of how the selected BMP will Small and Large Construction Activities 26 General Permit comply with state water quality standards, satisfy the state AKART requirements, and satisfy the federal technology -based treatment requirements. If you choose to follow the stormwater management practices contained in stormwater technical manuals approved by Washington State, including the proper selection, implementation and maintenance of appropriate BMPs, you are presumed to have satisfied this demonstration requirement and do not need to include within the SWPPP the technical basis which support the performance claims for the BMPs being used. The SWPPP must include a reference to the manual used. Approved stormwater technical manuals include: i. Stormwater Management Manual for Western Washington, August 2001, for sites west of the crest of the Cascade Mountains; ii. Stormwater Management Manual for Eastern Washington, (completion expected in the fall of 2003) for sites east of the crest of the Cascade Mountains; or iii. Other equivalent stormwater management guidance documents approved by Ecology. e. Stormwater discharges from construction sites which disturb 5 acres or more (40 CFR part 122.26(b)(14)(x)) and which discharge to surface waters listed as impaired by the state under Section 303(d) of the Clean Water Act for turbidity, fine sediment, high pH, and/or phosphorus are subject to an effluent limitation that is equal to the applicable water quality standards at the point of discharge. If impairment is due to turbidity and/or fine sediment, the turbidity at the point of discharge shall not exceed the background (upstream) turbidity of the receiving water. I. Effluent limitations apply to direct discharges to listed waterbodies as well as indirect discharges via a stom-water conveyance system. ii. All references and requirements associated with Section 303(d) of the Clean Water Act shall use the most current listing by Ecology of impaired waters that exists at the time of application for coverage under this permit f. Stormwater discharges from construction sites which disturb 5 acres or more (40 CFR part 122.26(b)(14)(x)) and which discharge to surface waters for which there is a total maximum daily load (TMDL) allocation or other control plan that addresses sediment (including turbidity, fine sediment, total suspended solids or siltation), high pH, or phosphorus must be consistent with the requirements in the approved TMDL or applicable control plan. Control plans may be total maximum daily load (TMDL) determinations, restrictions for the protection of endangered species, ground water management plans, or other limitations that regulate or set limits on discharges to a specific waterbody or groundwater recharge area. Information on impaired waterways is available from the Department of Ecology web site at: hp•//www egy.wa gov/programs/wo/stormwater. You may also contact the Department of Ecology for more information about impaired waterways at: Mailina Address: Department of Ecology Stormwater Unit PO Box 47600 Olympia, WA 98504-7600 Phone: 360-407-6000 Physical Address: Department of Ecology 300 Desmond Drive Lacey, WA 98503 Phone: 360-407-6000 5. WAR100001: Indian country within the State of Washington a. Puyallup Tribe of Indians. The following conditions apply only for projects on the Puyallup Reservation: 1. Each operator shall be responsible for achieving compliance with the Puyallup Tribe's Water Quality Standards. Smait and Large Construction Activities 27 General Permit ii. Each operator shall submit all Pollution Prevention Plans to the Puyallup Tribe Environmental Department for review and approval prior to beginning any discharge activities. iii. Each operator shall submit a copy of the Notice of Intent to the Puyallup Tribal Environmental Department at the same time it is submitted to EPA. iv. Storm Water Pollution Prevention Plans and Notices of Intent shall be submitted to: Puyallup Tribe Natural Resources, Environmental Department 1850 Alexander Avenue Tacoma, WA 98421 b. Confederated Tribes of the Chehalis Reservation. The following conditions apply only for projects on the Chehalis Reservation: The operator shall be responsible for achieving compliance with the Chehalis Tribe's Water Quality Standards. The operator shall submit a Storm Water Pollution Prevention Plan to the Chehalis Tribe Department of Natural Resources for review and approval at least thirty (30) days prior to beginning any discharge activities. The operator shall submit a copy of the Notice of Intent to the Chehalis Tribe Department of Natural Resources at the same time it is submitted to EPA. iv. Storm Water Pollution Prevention Plans and Notices of Intent shall be submitted to: Chehalis Tribe Department of Natural Resources 420 Howanut Road Oakville, WA 98568 Small and Large Construction Activities 28 General Permit Appendix A - Definitions and Acronyms Definitions "Arid Areas" means areas with an average annual rainfall of 0 to 10 inches. "Best Management Practices" (BMPs) means schedules of activities, prohibitions of practices, maintenance procedures, and other management practices to prevent or reduce the discharge of pollutants to waters of the United States. BMPs also include treatment requirements, operating procedures, and practice to control plant site runoff, spillage or leaks, sludge or waste disposal, or drainage from raw material storage. "Commencement of Construction Activities" means the initial disturbance of soils associated with clearing, grading, or excavating activities or other construction -related activities (e.g., stockpiling of fill material). "Control Measure" as used in this permit, refers to any BMP or other method used to prevent or reduce the discharge of pollutants to waters of the United States. "CWA" means the Clean Water Act or the Federal Water Pollution Control Act, 33 U.S.C. section 1251 at seq. "Discharge' when used without qualification means the "discharge of a pollutant." "Discharge of Storm Water Associated with Construction Activity' as used in this permit, refers to a discharge of pollutants in storm water from areas where soil disturbing activities (e.g., clearing, grading, or excavation), construction materials or equipment storage or maintenance (e.g., fill piles, borrow area, concrete truck washout, fueling), or other industrial storm water directly related to the construction process (e.g., concrete or asphalt batch plants)'are located. 'Eligible' means qualified for authorization to discharge storm water under this general permit. "Facility" or "Activity" means any 'point source" or any other facility or activity (including land or appurtenances thereto) that Is subject to regulation under the NPDES program. "Federal Facility" means any buildings, installations, structures, land, public works, equipment, aircraft, vessels, and other vehicles and property, owned by,- or constructed or manufactured for the purpose of leasing to, the Federal government. "Final Stabilization" means that: 1. All soil disturbing activities at the site have been completed and either of the two following criteria are met: a. a uniform (e.g„ evenly distributed, without large bare areas) perennial vegetative cover with a density of 70 percent of the native background vegetative cover for the area has been established on all unpaved areas and areas not covered by permanent structures, or b. equivalent permanent stabilization measures (such as the use of riprap, gabions, or geotextiles) have been employed. 2. When background native vegetation will cover less than 100 percent of the ground (e.g., and areas, beaches), the 70 percent coverage criteria is adjusted as follows: if the native vegetation covers 50 percent of the ground, 70 percent of 50 percent (0.70 X 0.50 = 0.35) would require 35 percent total cover for final stabilization. On a beach with no natural vegetation, no stabilization is required. 3. In and and semi -arid areas only, all soil disturbing activities at the site have been completed and both of the following criteria have been met: a. Temporary erosion control measures (e.g., degradable rolled erosion control product) are selected, designed, and installed along with an appropriate seed base to provide erosion control for at least three years without active maintenance by you, b. The temporary erosion control measures are selected, designed, and installed to -achieve 70 percent vegetative coverage within three years. 4. For individual lots in residential construction, final stabilization means that either. a. The homebuilder has completed final stabilization as specified above, or Small and Large Construction Activities A-1 General Permit b. The homebuilder has established temporary stabilization including perimeter controls for an individual lot prior to occupation of the home by the homeowner and informing the homeowner of the need for, and benefits of, final stabilization. 5. For construction projects on land used for agricultural purposes (e.g., pipelines across crop or range land, staging areas for highway construction, etc.), final stabilization may be accomplished by returning the disturbed land to its preconstruction agricultural use. Areas disturbed that were not previously used for agricultural activities, such as buffer strips immediately adjacent to "water of the United States," and areas which are not being returned to their preconstruction agricultural use must meet -the final stabilization criteria (1) or (2) or (3) above. "Indian county is defined at 40 CFR §122.2 to mean: 1. All land within the limits of any Indian reservation under the jurisdiction of the United States Government, notwithstanding the issuance of any patent, and, including rights -of -way running through the reservation; 2. All dependent Indian communities with the borders of the United States whether within the originally or subsequently acquired territory thereof, and whether within or without the limits of a state; and 3. All Indian allotments, the Indian titles to which have not been extinquished, including rights -of -ways running through the same. 'Large Construction Activity' is defined at 40 CFR § 1 22.26(b)(1 4)(x) and incorporated here by reference. A large construction activity Includes clearing, grading, and excavating resulting in a land disturbance that will disturb equal to or greater than five acres of land or will disturb less than five acres of total land area but is part of a larger common plan of development or sale that will ultimately disturb equal to or greater than five acres. Large construction activity does not include routine maintenance that is performed to maintain the original line and grade, hydraulic capacity, or original purpose of the site. 'Municipal Separate Storm Sewer System' or "MS4" is defined at 40 CFR §122.26(b)(8) to mean a conveyance or system of conveyances (including roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, manmade channels, or storm drains): 1. Owned and operated by a state, city, town, borough, county, parish, district, association, or„other public body (created by or pursuant to State law) having jurisdiction over disposal of sewage, industrial wastes, storm water, or other wastes, including special districts under State law such as a sewer district, flood control district or drainage district, or similar entity, or an Indian tribe or an authorized Indian tribal organization, or a designated and approved management agency under section 208 of the CWA that discharges to waters of the United States; 2. Designed or used for collecting or conveying storm water, 3. Which is not a combined sewer, and 4. Which is not part of a Publicly Owned Treatment Works (POTW) as defined at 40 CFR §122.2. "New Project" means the "commencement of construction activities" occurs after the effective date of this permit. "Ongoing Project" means the "commencement of construction activities' occurs before the effective date of this permit. "Operator" for the purpose of this permit and in the context of storm water associated with construction activity, means any party associated with a construction project that meets either of the following two criteria: 1. The party has operational control over construction plans and specifications, including the ability to make modifications to those plans and specifications; or 2. The party has day-to-day operational control of those activities at a project which are necessary to ensure compliance with a SWPPP for the site or other permit conditions (e.g., they are authorized to direct workers at a site to carry out activities required by the SWPPP or comply with other permit conditions). This definition is provided to inform permittees of EPA's interpretation of how the regulatory definitions of "owner or operator" and "facility or activity" are applied to discharges of storm water associated with construction activity. "Owner or operator" means the owner or operator of any "facility or activity" subject to regulation under the NPDES program. Small and Large Construction Activities A-2 General Permit 'Permitting Authority" means the United States Environmental Protection Agency, EPA, a Regional Administrator of the Environmental Protection Agency or an authorized representative. "Point Source" means any discernible, confined, and discrete conveyance, including but not limited to, any pipe, ditch, channel, tunnel, conduit, well, discrete fissure, container, rolling stock concentrated animal feeding operation, landfill leachate collection system, vessel or other floating craft from which pollutants are or may be discharged. This term does not include return flows from irrigated agriculture or agricultural storm water runoff. "Pollutant" is defined at 40 CFR §122.2. A partial listing from this definition includes: dredged, spoil, solid waste, sewage, garbage, sewage sludge, chemical wastes, biological materials, heat, wrecked or discarded equipment, rock, sand, cellar dirt, and industrial or municipal waste. "Project Area" means: — The areas on the construction site where storm water discharges originate and flow toward the point of discharge into the receiving waters (including areas where excavation, site development, or other ground disturbance activities occur) and the immediate vicinity. (Example: 1. Where bald eagles nest in a tree that is on or bordering a construction site and could be disturbed by the construction activity or where grading causes storm water to flow into a small wetland or other habitat that is on the site that contains listed species.) — The areas where storm water discharges flow from the construction site to the point of discharge into receiving waters. (Example: Where storm water flows into a ditch, swale, or gully that leads to receiving waters and where listed species (such as amphibians) are found in the ditch, Swale, or gully.) The areas where storm water from construction activities discharge into receiving waters and the areas in the immediate vicinity of the point of discharge. (Example: Where storm water from construction activities discharges into a stream segment that is known to harbor listed aquatic species.) — The areas where storm water BMPs will be constructed and operated, including any areas where storm water -Rows to and from BMPs. (Example: Where a storm water retention pond.would be built.) — The areas upstream and /or downstream from construction activities discharges into a stream segment that may be affected by the said discharges. (Example: Where sediment discharged to a receiving stream settles downstream and impacts a breeding area of a listed aquatic species.) *Receiving water" means the "Water of the United States" as defined in 40 CFR §122.2 into which the regulated storm water discharges. "Runoff coefficient" means the fraction of total rainfall that will appear at the conveyance as runoff. 'Semi -Arid Areas' means areas with an average annual rainfall of 10 to 20 inches. "Site" means the land or water area where any 'facility or activity' is physically located or conducted, including adjacent land used in connection with the facility or activity. 'Small Construction Activity' is defined at 40 CFR §122.26(b)(15) and incorporated here by reference. A small construction activity includes clearing, grading, and excavating resulting in a land disturbance that will disturb equal to or greater than ope (1) acre and less than five (5) acres of land or will disturb less than one (1) acre of total land area but is part of a larger common plan of development or sale that will ultimately disturb equal to or greater than one (1) acre and less than five (5) acres. Small construction activity does not include routine maintenance that is performed to maintain the original line and grade, hydraulic capacity, or original purpose of the site. 'Storm Water' means storm water runoff, snow melt runoff, and surface runoff and drainage. 'Storm Water Discharge -Related Activities' as used in this permit, include: activities that cause, contribute to, or result in storm water point source pollutant discharges, including but not limited to: excavation, site development, grading and other surface disturbance activities; and measures to control storm water including the siting, construction and operation of BMPs to control, reduce or prevent storm water pollution. 'Total Maximum Daily Load" or "TMDL" means the sum of the individual wasteload allocations (WLAs) for point sources and load allocations (LAs) for nonpoint sources and natural background. If a receiving water has only one point source discharger, the TMDL is the sum of that point source WLA plus the LAs for any nonpoint sources of pollution and natural background sources, tributaries, or adjacent segments. TMDLs can be expressed in terms of either mass per time, toxicity, or other appropriate measure. Small and Large Construction Activities A-3 General Permit 'Waters of the United States' is as defined at 40 CFR §122.2. "Wetland" means those areas that are inundated or saturated by surface or groundwater at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions. Wetlands generally include swamps, marshes, bogs, and similar areas. ACRONYMS BMP - Best Management Practices CGP - Construction General Permit CFR - Code of Federal Regulations CWA - Clean Water Act EPA - United States Environmental Protection Agency ESA - Endangered Species Act FWS - United States Fish and Wildlife Service MS4 - Municipal Separate Storm Sewer System MSGP - Multi -Sector General Permit NHPA - National Historic Preservation Act NMFS - United States National Marine Fisheries Service NOI - Notice of Intent NOT - Notice of Termination NPDES - National Pollutant Discharge Elimination System POTW - Publicly Owned Treatment Works SHPO - State Historic Preservation Officer SWPPP - Storm Water Pollution Prevention Plan THPO - Tribal Historic Preservation Officer TMDL - Total Maximum Daily Load WQS -Water Quality Standard Small and Large Construction Activities A-4 General Permit Appendix B - Permit Areas Eligible for Coverage Permit coverage for storm water discharges from construction activity occurring within the following areas is provided by legally separate and distinctly numbered permits: 1. EPA Region 1: CT, MA, ME, NH, I'll, VT US EPA, Region 01 Office of Ecosystem. Protection NPDES Storm Water Program 1 Congress St, Suite 1100 (CMU) Boston, MA 02114-2023 The States of Connecticut, Maine, Rhode Island, and Vermont are the NPDES Permitting Authority for the majority of discharges within their respective states. Permit No. Areas of Coverage/Where EPA is Permitting Autho MAR100000 Commonwealth of Massachusetts (except Indian country) MAR100001 Indian country within the State of Massachusetts CTR100001 Indian country within the State of Connecticut NHR100000 State of New Hampshire RIR100001 Indian country within the State of Rhode Island VTR10000F Federal Facilities In the State of Vermont MER100001 Indian country within the State of Maine 2. EPA Region 2: NJ, NY, PR, VI US EPA, Region 02 NPDES Storm Water Program 290 Broadway, 24th Floor New York, NY 10007-1866 For PR: US EPA, Region 02 Caribbean Environmental Protection Division NPDES Storm Water Program 1492 Ponce de Leon Ave Central Europa Building, Suite 417 San Juan, PR 00907-4127 The State of New York is the NPDES Permitting Authority for the majority of discharges within its state. The State of New Jersey and the Virgin Islands are the NPDES Permitting Authority for all discharges within their respective states. Permit No. Areas of Coverage/Where EPA is Permitting Authority NYR100001 Indian country within the State of New York PRR100000 The Commonwealth of Puerto Rico Small and Large Construction Activities B-1 General Permit 3. EPA Region 3: DE, DC, MD, PA, VA, WV US EPA, Region 03 NPDES Storm Water Program 1650 Arch St Philadelphia, PA 19103 The State of Delaware is the NPDES Permitting Authority for the majority of discharges within its state. Maryland, Pennsylvania, Virginia, and West Virginia are the NPDES Permitting Authority for all discharges within their respective states. Permit No. Areas of Coverage/Where EPA is Permitting Authority DCR100000 The District of Columbia DER10000F Federal Facilities in the State of Delaware 4. EPA Region 4: AL, FL, GA, KY, MS, NC, SC, TN US EPA, Region 04 Water Management Division NPDES Storm Water Program 61 Forsyth St SW Atlanta, GA 30303-3104 Coverage Not Available. Construction activities in Region 4 must obtain permit coverage under an alternative permit. S. EPA Region 5: IL, IN, MI, MN, OH, WI US EPA, Region 05 NPDES & Technical Support NPDES Storm Water Program 77 W Jackson Blvd (WN-16J) Chicago, IL 60604-3507 The States of Michigan, Minnesota, and Wisconsin are the NPDES Permitting Authority for the majority of discharges within their respective states. The States of Illinois, Indiana, and Ohio are the NPDES Permitting Authorities for all discharges within their respective states. Permit No. Areas of coveranetwhere EPA Is Permitting Authority MIR100001 Indian country within the State of Michigan MNR100001 Indian country within the State of Minnesota WIR100001 Indian country within the State of Wisconsin, except the Sokaogon Chippewa (Mole Lake) Community. Small and Large Construction Activities B-2 Central Perndt 6. EPA Region 6: AR, LA, OK, TX, NM (except see Region 9 for Navajo lands, and see Region 8 for Ute Mountain Reservation lands) US EPA, Region 06 NPDES Storm Water Program 1445 Ross Ave, Suite 1200 Dallas, TX 75202-2733 The States of Louisiana, Oklahoma, and Texas are the NPDES Permitting Authority for the majority of discharges within their respective state. The State of Arkansas is the NPDES Permitting Authority for all discharges within its respective state. Permit No. Areas of coveraaetwhere EPA is Permittina Authority LAR160001 Indian country within the State of Louisiana NMR160000 The State of New Mexico, except Indian country NMR150001 Indian country within the State of New Mexico, except Navajo Reservation Lands that are covered under Arizona permit AZR100001 and Ute Mountain Reservation Lands that are covered under Colorado permit COR100001. OKR160001 Indian country within the State of Oklahoma OKRI5000F Discharges In the State of Oklahoma that are not under the authority of the Oklahoma Department of Environmental Quality, including activities associated with with oil and gas exploration, drilling, operations, and pipelines (includes SIC Groups 13 and 46, and SIC codes 492 and 5171), and point source discharges associated with agricultural production, services, and silviculture (includes SIC Groups 01, 02, 07, 08, 09). TXR16000F Discharges in the State of Texas that are not under the authority of the Texas Commission on Environmental Quality (formerly TNRCC), including activities associated with the exploration, development, or production of oil or gas or geothermal resources, including transportation of crude oil or natural gas by pipeline. TXR160001 Indian country within the State of Texas. 7. EPA Region 7: IA, KS, MO, NE (except see Region 8 for Pine Ridge Reservation Lands) US EPA, Region 07 NPDES Storm Water Program 901 N 5th St Kansas City, KS 66101 The States of Iowa, Kansas, and Nebraska are the NPDES Permitting Authority for the majority of discharges within their respective states. The State of Missouri is the NPDES Permitting Authority for all discharges within its state. Permit No. Areas of coveragetwhere EPA is Permittina Authority IAR100001 Indian country within the State of Iowa KSR100001 Indian country within the State of Kansas NER100001 Indian country within the State of Nebraska, except Pine Ridge Reservation lands (see Region 8) Small and Large Construction Activities B-3 General Permit B. EPA Region 8: CO, MT, ND, SD, WY, UT (except see Region 9 for Goshute Reservation and Navajo Reservation Lands), the Ute Mountain Reservation in NM, and the Pine Ridge Reservation in NE. US EPA, Region 08 NPDES Storm Water Program 999 18th St, Suite 300 (EPR-EP) Denver, CO 80202-2466 The States of Colorado, Montana, North Dakota, South Dakota, Utah, and Wyoming are the NPDES Permitting Authority for the majority of discharges within their respective states. Permit No. Areas of coverauetwhere EPA is Permitting Authority COR10000F Federal Facilities in the State of Colorado, except those located on Indian country COR100001 Indian country within the State of Colorado, as well as the portion of the Ute Mountain Reservation located in New Mexico MTR100001 Indian country within the State of Montana NDR100001 Indian country within the State of North Dakota, as well as that portion of the Standing Rock Reservation located in South Dakota (except for the portion of the lands within the former boundaries of the Lake Traverse Reservation which is covered under South Dakota permit SDR100001 listed below) SDR100001 Indian country within the State of South Dakota, as well as the portion of the Pine Ridge Reservation located in Nebraska and the portion of the lands within the former boundaries of the Lake Traverse Reservation located in North Dakota (except for the Standing Rock Reservation which Is covered under North Dakota permit NDR1 D0001 listed above) UTR100001 Indian country within the State of Utah, except Goshute and Navajo Reservation lands (see Region 9) WYR100001 Indian country within the State of Wyoming 9. EPA Region 9: CA, HI, NV, Guam, American Samoa, the Commonwealth of the Northern. Mariana Islands, the Goshute Reservation in UT and NV, the Navajo Reservation In UT, NM, and AZ, the Duck Valley Reservation in ID, and the Fort McDermitt Reservation in OR. US EPA, Region 09 NPDES Storm Water Program 75 Hawthorne St San Francisco, CA 94105-3901 The States of Arizona, Califomia and Nevada are the NPDES Permitting Authority for the majority of discharges within their respective states. The State of Hawaii is the NPDES Permitting Authority for all discharges within its state. Permit No. Areas of coveranetwhere EPA Is Permittina Authority ASR100000 The Island of American Samoa AZR100001 Indian country within the State of Arizona, as well as Navajo Reservation lands in New Mexico and Utah CAR100001 Indian country within the State of California GUR100000 The Island of Guam JAR100000 Johnston Atoll MWR100000 Midway Island and Wake Island NIR100000 Commonwealth of the Northern Mariana Islands NVR100001 Indian country within the State of Nevada, as well as the Duck Valley Reservation in Idaho, the Fort McDermitt Reservation in Oregon and the Goshute Reservation in Utah Small and Carge Construction Activities B-4 General Permit 10. EPA Region 10: AK, WA, ID (except see Region 9 for Duck Valley Reservation Lands), and OR (except see Region 9 for Fort McDermitt Reservation). US EPA, Region 10 NPDES Storm Water Program 1200 Sth Ave (OW 130) Seattle, WA 98101-1128 Phone: (206) 553-6650 The States of Oregon and Washington are the NPDES Permitting Authority for the majority of discharges within their respective states. Permit No. Areas of coverage/where EPA Is Permittina Authority AKR100000 The State of Alaska, except Indian country AKR100001 Indian country within the -state of Alaska 11311100001) The State of Idaho, except Indian country IDR100001 Indian country within the State of Idaho, except Duck Valley Reservation. -lands (see Region 9) 01111100001 Indian country within the State of Oregon, except Fort McDermitt Reservation lands (see Region 9) WAR10000F Federal Facilities in the State of Washington, except those located on Indian .country WAR100001 Indian country within the State of Washington Small and Large Construction Activities B-5 General Permit Appendix C - Endangered Species Act Review Procedures You must meet at least one of the six criteria in Subpart 1.3.C.6 to be eligible for coverage under this permit. You must follow the procedures in this Appendix to assess the potential effects of storm water discharges and storm water discharge -related activities on listed species and their critical habitat. When evaluating these potential effects, operators must evaluate the entire project area. For purposes of this Appendix, the term "project area" is inclusive of the term "Action Area.' Action area is defined in 50 CFR §402.02 as all areas to be affected directly or indirectly by the federal action and not merely the immediate area involved in the action. This includes areas beyond the footprint of the construction area that may be affected by storm water discharges and storm water discharge related activities. "Project area" is defined in Appendix A. (Operators who are eligible and able to certify eligibility under Criterion B, C, D, or F of Subpart 1.3.C.6 because of a previously issued ESA section 10 permit, a previously completed ESA section 7 consultation, or because the operator's activities were already addressed in another operator's certification of eligibility may proceed directly to Step Four.) Step One: Determine If Listed Threatened or Endangered Species are Present On or Near Your Project Area You must determine, to the best of your knowledge, whether listed species are located on or near your project area. To make this determination, you should: • Determine if listed species are in your county or township. The local offices of the U.S. Fish and Wildlife Service (FWS), National Marine Fisheries Service (NMFS), and State or Tribal Heritage Centers often maintain lists of federally listed endangered or threatened species on their Internet sites. Visit www.epa.aov/nr)des/stormwater/cgi) to find the appropriate site .for your state or check with your local office. In most cases, these lists allow you to determine if there are listed species in your county or township. • If there are listed species in your county or township, check to see if critical habitat has been designated and if that area overlaps or is near your project area. • Contact your local FWS, NMFS, or State or Tribal Heritage Center to determine if the listed sp�.cies could be found on or near your project area and if any critical habitat areas have been designated that overlap or are near your project area. Critical habitat areas maybe designated independently from the listed species for your county, so even if there are no listed species in your county or township, you must still contact one of the agencies mentioned above to determine if there are any critical habitat areas on or near your project area. You can also find critical habitat designations and associated requirements at 50 CFR Parts 17 and 226. http://www. access, ggo.gov. • If there are no listed species in your county or township, no critical habitat areas on or near your project area, or if your local FWS, NMFS, or State or Tribal Heritage Center indicates that listed species are not a concern in your part of the county or township, you may check box A on the Notice of Intent Form. • If there are listed species and if your local FWS, NMFS, or State or Tribal Heritage Center indicates that these species could exist on or near your project area, you will need to do one or more of the following: • Conduct visual inspections: This method may be particularly suitable for construction sites that are smaller in size or located in non -natural settings such as highly urbanized areas or industrial parks where there is little or no natural habitat, or for construction activities that discharge directly into municipal storm water collection systems. • Conduct a formal biological survey. In some cases, particularly for larger construction sites with extensive storm water discharges, biological surveys may be an appropriate way to assess whether species are located on or near the project area and whether there are likely adverse effects to such species. Biological surveys are frequently performed by environmental consulting firms. A biological survey may in some cases be useful in conjunction with Steps Two, Three, or Four of these instructions. • Conduct an environmental assessment under the National Environmental Policy Act (NEPA). Such reviews may indicate if listed species are in proximity to the project area. Coverage under the CGP does not trigger such a review because the CGP does not regulate new sources (that is, dischargers subject to New Source Performance Standards under section 306 of the Clean Water Act), and is thus statutorily Small and Large Construction Activities C-] General Permit exempted from NEPA. See CWA section 511(c). However, some construction activities might require review under NEPA for other reasons such as federal funding or other federal involvement in the project. If listed threatened or endangered species or critical habitat are present in the project area, you must look at impacts to species and/or habitat when following Steps Two through Four. Note that many but not all measures imposed to protect listed species under these steps will also protect critical habitat. Thus, meeting the eligibility requirements of this CGP may require measures to protect critical habitat that are separate from those to protect listed species. Step Two: Determine If the Construction Activity's Storm Water Discharges or Storm Water Discharge - Related Activities Are Likely to Adversely Affect Listed Threatened or Endangered Species or Designated Critical Habitat To receive CGP coverage, you must assess whether your storm water discharges or storm water discharge - related activities is likely to adversely affect listed threatened or endangered species or designated critical habitat that are present on or near your project area. Potential adverse effects from storm water discharges and storm water discharge -related activities include: Hydrological. Storm water discharges may cause siltation, sedimentation or induce other changes in receiving waters such as temperature, salinity or pH. These effects will vary with the amount of storm water discharged and the volume and condition of the receiving water. Where a storm water discharge constitutes a minute portion of the total volume of the receiving water, adverse hydrological effects are less likely. Construction activity itself may also alter drainage patterns on a site where construction occurs'that can Impact listed species or critical habitat. Habitat. Excavation, site development, grading, and other surface disturbance activities from construction activities, including the installation or placement of storm water BMPs, may adversely affect listed species or theirhabitat. Storm water may drain or inundate listed species habitat. Toxicity. In some cases, pollutants in storm water may have toxic effects on listed species. The scope of effects to consider will vary with each site. If you are having difficulty determining whether your project is likely to adversely affect listed species or.critical habitat, or one of the Services has already raised concerns to you, you mugt contact the appropriate office of the FWS, NMFS or Natural Heritage Center for assistance. If adverse effects are not likely, then you may check box E on the NOI form and apply for coverage under the CGP. If the discharge may adversely effect listed species or critical habitat, you must follow Step Three. Step Three: Determine if Measures Can Be Implemented to Avoid Adverse Effects If you make a preliminary determination that adverse effects are likely to occur, you can still receive coverage under Criterion E of Subpart 1.3.C.6 of the CGP if appropriate measures are undertaken to avoid or eliminate the likelihood of adverse effects prior to applying for CGP coverage. These measures may involve relatively simple changes to construction activities such as re-routing a storm water discharge to bypass an area where species are located, relocating BMPs, or by changing the 'footprint" of the construction activity. You should contact the FWS and/or NMFS to see what appropriate measures might be suitable to avoid or eliminate the likelihood of adverse impacts to listed species and/or critical habitat. (See 50 CFR §402.13(b)). This can entail the initiation of informal consultation with the FWS and/or NMFS (described in more detail in Step Four). If you adopt measures to avoid or eliminate adverse affects, you must continue to abide by those measures for the duration of the construction project and coverage under the CGP. These measures must be described in the SWPPP and are enforceable CGP conditions and/or conditions for meeting the eligibility criteria in Subpart 1.3. If appropriate measures to avoid the likelihood of adverse effects are not available, you must follow Step Four. Step Four: Determine if the Eligibility Requirements of Criterion B, C, D, or F of Subpart 1.3.C.6 Can Be Met Where adverse effects are likely, you must contact the FWS and/or NMFS. You may still be eligible for CGP coverage if any likely adverse effects can be addressed through meeting Criterion B, C, D, or F of Subpart 1.3.C.6 of the CGP. These criteria are as follows: 1. An ESA Section 7 Consultation Is Performed for Your Activity (See Criterion B or C of Subpart 1.3. C.6 of the CGP). Formal or informal ESA section 7 consultation is performed with the FWS and/or NMFS that addresses the effects of your storm water discharges and storm water discharge -related activities on federally -listed and threatened Small and Large Construction Activities G2 General Permit species and designated critical habitat. FWS and/or NMFS may request that consultation take place if any actions are identified that may affect listed species or critical habitat. In order to be eligible for coverage under this permit, consultation must result in a "no jeopardy opinion" or a written concurrence by the Service(s) on a finding that your storm water discharge(s) and storm water discharge -related activities are not likely to adversely affect listed species or critical habitat (For more information on consultation, see 50 CFR §402). If you receive a "jeopardy opinion," you may continue to work with the FWS and/or NMFS and your permitting authority to modify your project so that it will not jeopardize listed species or designated critical habitat. Most consultations are accomplished through informal consultation. By the terms of this CGP,. EPA has automatically designated operators as non-federal representatives for the purpose of conducting informal consultations. See Subpart 1.3.C.6 and 50 CFR §402.08 and §402.13. When conducting informal ESA section 7 consultation as a non-federal representative, you must follow the procedures found in 50 CFR Part 402 of the ESA regulations. You must notify FWS and/or NMFS of your intention and agreement to conduct consultation as a non-federal representative. Consultation may occur in the context of another federal action at the construction site (e.g., where ESA section 7 consultation was performed for issuance of a wetlands dredge and fill permit for the project or where a NEPA review is performed for the project that incorporates a section 7 consultation). Any terms and conditions developed through consultations to protect listed species and critical habitat must be incorporated into the SWPPP. As noted above, operators may, if they wish, initiate consultation with the Services at Step Four. Whether ESA section 7 consultation must be performed with either the FWS, NMFS or both Services depends on the listed species that may be affected by the operator's activity. In general, NMFS has jurisdiction over marine, estuaries, and anadromous species. Operators should also be aware that while formal section 7 consultation provides protection from incidental takings liability, informal consultation does not. 2. An Incidental Taking Pennit Under Section 10 of the ESA is Issued for the Operators Activity (See Criterion D of Subpart 1.3.C.6 of the CGP). Your construction activities are authorized through the issuance of a permit under section 10 of the ESA and that authorization addresses the effects of your storm water discharge(s) and storm water discharge -related activities on federally -listed species and designated critical habitat. You must follow FWS and/or NMFS proce' Ores when applying for an ESA Section 10 permit (see 50 CFR §17.22(b)(1) for FWS and §222.22 for NMFS): Application instructions for section 10 permits for FWS and NMFS can be obtained by accessing the FWS and NMFS' websites (htto://www.fws.gov and http://www.nmfs.noaa.govl or by contacting the appropriate FWS and,NMFS regional office. 3. You are Covered Under the Eligibility Certification of Another Operator for the Project Area (See Criterion F of Subpart 1.3.C.6 of the CGP). Your storm water discharges and storm water discharge -related activities were already addressed in another operator's certification of ellgibility under Criteria A through E of Subpart 1.3.C.6 which also included your project area. For example, a general contractor or developer may have completed and filed an NOI for the entire project area with the necessary Endangered Species Act certifications (criteria A-E), subcontractors may then rely upon that certification and must comply with any conditions resulting from that process. By certifying eligibility under Criterion F of Subpart 1.3.C.6, you agree to comply with any measures or controls upon which the other operator's certification under Criterion B, C, or D of Subpart 1.3.C.6 was based. Certification under Criterion F of Subpart 1.3.C.6 is discussed in more detail in the Fact Sheet that accompanies this permit. You must comply with any terms and conditions imposed under the eligibility requirements of Criterion A through F to ensure that your storm water discharges and storm water discharge -related activities are protective of listed species and/or critical habitat. Such terms and conditions must be incorporated in the project's SWPPP. If the eligibility requirements of Subpart 1.3.C.6 cannot be met, then you are not eligible for coverage under the CGP. In these instances, you may consider applying to EPA for an individual permit. Small and Large Construction Activities C-3 General Permit Appendix D - Small Construction Waivers and Instructions These waivers are only available to storm water discharges associated with small construction activities (i.e., 1-5 acres). As the operator of a small construction activity, you may be able to qualify for a waiver in lieu of needing to obtain coverage under this general permit based on: (A) a low rainfall erosivity factor, (B) a TMDL analysis, or (C) an equivalent analysis that determines allocations for small construction sites are not needed. Each operator, otherwise needing permit coverage, must notify EPA of its intention for a waiver. It is the responsibility of those individuals wishing to obtain a waiver from coverage under this general permit to submit a complete and accurate waiver certification as described below. Where the operator changes or another is added during the construction project, the new operator must also submit a waiver certification to be waived. A. Rainfall Erosivity Waiver Under this scenario the small construction project's rainfall erosivity factor calculation ('R" in the Revised Universal Soil Loss Equation) is less than 5 during the period of construction activity. The operator must certify to the Permitting Authority that construction activity will occur only when the rainfall erosivity factor is less than 5. The period of construction activity begins at initial earth disturbance and ends with final stabilization. Where vegetation will be used for final stabilization, the date of installation of a stabilization pratctice that will provide interim non -vegetative stabilization can be used for the and of the construction period, provided the operator commits (as a condition of waiver eligibility) to periodically inspect and properly maintain the area until the criteria for final stabilization as defined in the construction general permit have been met. If use of this interim stabilization eligibility condition was relied on to qualify for the waiver, signature on the waiver with .its certification statement constitutes acceptance of and commitment to complete the final stabilization process. The operator must submit a waiver certification to EPA prior to commencing construction activities. Note. The rainfall erosivity factor "R' is determined in accordance with Chapter 2 of Agriculture Handbook Number 703, Predicting Soil Erosion by Water. A Guide to Conservation Planning With the Revised Universal Soil Loss Equation (RUSLE), pages 21-64, dated January 1997; United States Department of Agriculture (USDA), Agricultural Research Service. EPA funded a cooperative agreement with. Texas A&M University to develop an online rainfall erosivity calculator. You can access the calculator from EPA's:webske at: www.epa.goy/npdes/stormwater/cgg. Use of the calculator allows you to determine potential eligibility for the rainfall erosivity waiver. It may also be useful in determining the time periods during which construction activity could be waived from permit coverage. You may find that moving your construction activity by a few weeks or expediting site stabilization will allow you to qualify for the waiver. If you are the operator of the construction activity and eligible for a waiver based on low erosivity potential, you must provide the following information on the waiver certification in order to be waived from permitting requirements: 1. Name, address and telephone number of the construction site operators; 2. Name (or other identifier), address, county or similar governmental subdivision, and latitude/longitude of the construction project or site; 3. Estimated construction start and completion (i.e., final stabilization) dates, and total acreage (to the nearest quarter acre) to be disturbed; 4. The rainfall erosivity factor calculation that applies to the active construction phase at your project site; and 5. A statement, signed and dated by an authorized representative as provided in Appendix G, Subsection 11, that certifies that the construction activity will take place during a period when the value of the rainfall erosivity factor is less than five. At the time of publication, a Low Erosivity Waiver Form is not available. If EPA does create a form, it will be noticed (either directly, by public notice, or by making information available on the Internet at . www.epa.qDv/npdes/stormwater/cap. Note: If the R factor is 5 or greater, you cannot apply for the rainfall erosivity waiver, and must apply for permit coverage as per Subpart 2.1 of the construction general permit, unless you qualify for the Water Quality Waiver as described below. If your small construction project continues beyond the projected completion date given on the waiver certification, you must recalculate the rainfall erosivity factor for the new project duration. If the R factor is below five (5), you Small and Large Construction Activities D-1 General Permit must update all applicable information on the waiver certification and retain a copy of the revised waiver as part of the site SWPPP. The new waiver certification must be submitted prior to the projected completion date listed on the original waiver form to assure your exemption from permitting requirements is uninterrupted. If the new R factor is five (5) or above, you must submit an NOI as per Part 2. B. TMDL Waiver This waiver is available if EPA has established or approved a TMDL that addresses the pollutant(s) of concern and has determined that controls on storm water discharges from small construction activity qre not needed to protect water quality. The pollutant(s) of concem include sediment (such as total suspended solids, turbidity or siltation) and any other pollutant that has been identified as a cause of impairment of any water body that will receive a discharge from the construction activity. Information on TMDLs that have been established or approved by EPA is available from EPA online at htto://www.ei)a.gov/owow/tmdi/ and from state and tribal water quality agencies. If you are the operator of the construction activity and eligible for a waiver based on compliance with an EPA established or approved TMDL, you must provide the following information on the Waiver. Certification form in order to be waived from permitting requirements: 1. Name, address and telephone number of the construction site operator(s); 2. Name (or other identifier), address, county or similar governmental subdivision, and latitude/longitude of the construction project or site; 3. Estimated construction start and completion (i.e., final stabilization) dates, and total acreage (to the nearest quarter acre) to be disturbed; 4. The name of the water body(s) that would be receiving storm water discharges from your construction project; 5. The name and approval date of the TMDL; 6. A statement, signed and dated by an authorized representative as provided in Appendix G, Subsection 11, that certifies that the construction activity will take place and that the storm water discharges will occur, within the drainage area addressed by the TMDL. C. Equivalent Analysis Waiver This waiver is available for non -impaired waters only. The operator can develop an equivalent analysis that determines allocations for his small construction site for the pollutant(s) of concern or determines that such allocations are not needed to protect water quality. This waiver requires a small construction operator to develop an equivalent analysis based on existing in -stream concentrations, expected growth in pollutant concentrations from all sources, and a margin of safety. If you are a construction operator who wants to use this waiver, you must develop your equivalent analysis and provide the following information to be waived from permitting requirements: 1. Name, address and telephone number of the construction site operator(s); 2 Name (or other identifier), address, county or similar governmental subdivision, and latitude/longitude of the construction project or site; 3 Estimated construction start and completion (i.e., final stabilization) dates, and total acreage (to the nearest quarter acre) to be disturbed; 4. The name of the water bodies that would be receiving storm water discharges from your construction project; 5. Your equivalent analysis; 6. A statement, signed and dated by an authorized representative as provided in Appendix G, Subsection 11, that certifies that the construction activity will take place and that the storm water discharges will occur, within the drainage area addressed by the equivalent analysis. D. Waiver Deadlines and Submissions 1. Waiver certifications must be submitted prior to commencement of construction activities. Small and Large Construction Activities D-2 General Permit 2. If you submit a TMDL or equivalent analysis waiver request, you are not waived until EPA approves your request. As such, you may not commence construction activities until receipt of approval from EPA. 3. Late Notifications: Operators are not prohibited from submitting waiver certifications after initiating clearing, grading, excavation activities, or other construction activfties. The Agency reserves the right to take enforcement for any unpermitted discharges that occur between the time construction commenced and waiver authorization is granted. Submittal of a waiver certification is an optional alternative to obtaining permit coverage for discharges of storm water associated with small construction activity, provided you qualify for the waiver. Any discharge of storm water associated with small construction activity not covered by either a permit or a waiver may be considered an unpermitted discharge under the Clean Water Act. As mentioned above, EPA reserves the right to take enforcement for any unpermitted discharges that occur between the time constructioncommenced and either discharge authorization is granted or a complete and accurate waiver certification is submitted. EPA may notify any operator covered by a waiver that they must apply for a permit. EPA may notify any operator who has been in non-compliance with a waiver that they may no longer use the waiver for future projects. Any member of the public may petition EPA to take action under this provision by submitting written notice along with supporting justification. Complete and accurate Rainfall Erosivity waiver certifications must be sent to the following address: Regular U.S. Mail Delivery EPA Storm Water Notice Processing Center Mail Code 4203M U.S. EPA 1200 Pennsylvania Avenue, NW Washington, DC 20460 EPA Storm Water Notice Processing Center Room 7420 U.S. EPA 1201Constitution Avenue, NW Washington, DC 20004 Complete and accurate TMDL or equivalent analysis waiver requests must be sent to the applicable EPA Region office specified in Appendix B. Small and Large Construction Activities D-3 Gp"Prn/ Permit Appendix E - Notice of Intent Form and. instructions From the effective date of this permit, operators are to use the Notice of Intent Form contained in this Appendix to obtain permit coverage. Small and Large Construction Activities l<1 This Form Replaces Form 3510-9 (8-98) Form Approved OMB Nos. 2040.0188 -and 2040.0211 R'efor to the Following Pages for Instructions' United states Environmental Protection Agency NPbES . Washington, DC 20M Form Notice of•Intent (NbI) for Sto'm•Water Discharges As"clated with ` . congtniction Activity Under an Nf3AES General Permit §6bmission of thls•Notloe.ofI. 6nt (Nbl) consulates, notice that the. party identified in Section II of this form requests authorizetion to discharge Ptirsut M t6'the. NPbES. Construction General Parrmft (CGP) permit number Identifier! In Section I of this form. Submission of this.NOI also 2;ohstttutes n&bo that the party Identified In Section it of this form mee* the eligllillity requirements of the CGP tor. the project identtfled In Seatlon III of thls'form. -Permit oovomge is required prior to commencement of construction activity until you are eligible to terminate coverags'ati, detailed In the CGP. To obtain authortzatlon, you must submit a oompiete and accurate NO] form. Refer to th'a ri"c89hs at the end of•this form. Illlltllll . Name: I I• I I I I I I I I i l l l l l l l l l l l l l l l l l l -III ' �•, . IRS Employer Wentifloption Number (EIN): W- 1 III I I I I Malling Addretts: 9"old I I I I I I I IIII I I I I I I I I II I 1 11.111111 I I I a I I I I I 1 J I I I I I I I 1 1, 1- 1 I I I state: III Zip Code: I I I I I I- LLLU Phone: LLJ - LLLj - Fax (optional): E-mail (op6onaq: Project/Sfte Nema: Project City: L 1 1 1 1 1 1 1 1 1 I' I i l i I I I I I I I I I 'I I I �tat�: L1J Zip code: L.I I I I I -LI I I County or similhr gw'arriment subdlvislon: Latftude/LonghWa (Use one of three possibl8 formats, and specify method) Latitude 1. _ _ _. N (degrees, minutes, seconds) Longitude 1. _— ° -- _ W (degrees: minutes, seconds) 2. __�:' N (degrees, minutes, decimal) 2.__ °__._.: W (degrees, minutes, dedrnal) 3. _ -° N (decimal) 3.--- _-- ° W (decimal) Method: ❑ U.S.G.S. topographin'map ❑. EPAweb site ❑ GPS ❑ Mar. • If you used a t).S.G.S. topographic map, what was the scale: Project Located In Indian country?•. ❑ Yea. ❑ No If so, name of'Reservation or V not part of a Reservation, put 'Not Applicable': Estimated Project Start Date: W / LL I I I I I Estimated Project Completion Date: W / I / L_I I I Month Data Year MoMh Date Year Estimated Area to be Disturbed (to the nearest quarter acre): EPA Form 3510-9 (Rev. 6f03) Has the SWPPP been prepared In advance of Ming this Not? ❑ Yes ❑'Nb Location' of SWPPP III viewing: - ❑ Address in Secton• it ❑ Address In Section III ❑Other ' If Other. SWPPP Street I I I I I I I I I I I I I I I I I Chy:IIIIIIIIIIII111111111111111 State: 1 Zip Code: L_J __L LLj _ Li. i i � SWPPP Contact Information (ff different than that In Section II): Name: J I Phone: t_J _L� _ L� _ LLLLJ Fait (optional): �J - . LLLU. E-mail (optional): �. Identify the neme(s) of waterbodias to Which you discharge. Is this discha consistent with the essurirptions and requirements of applicable EPA approvi)d or established TMDL(s)? Yes No Under which crttedon of the permit have you satisfied your ESA eligibility obligations? ❑A ❑9 ❑C ❑D ❑E'❑F If you select crtterloh F. provide permit tracking'number of operator under which you are carding eligibility: ` IIIIIIIIII . 1 certify under penalty of law that this document end all attaohments were prepared under my direction or supervision in sobordance with a system designed to saedre that quallfibd personn6l property gathered and evaluated the Information submitted.. Based on my Inquiry of the person or persons who manage the system, or those. persons 1rectly responsible for gathering the Information, the information submitted Is, to the beat of my knowledge and belief, true, accurte, and complete: I am aware that there are significant penattles III submitting false -Information, Including the possibility of fine and Imprisonment for knowing ylolatlons. Print Name Print Title: Signature: Date: EPA Form 3510-9 (Rev. !i/03) Instructions for Completing EPA Form 3510-9 Notice.of Intent (NOI) for Storm Water.Discharges Associated with Construction Activity Under an NPDES Oerisral Permit NPDES Form . This Form Replaces Form 3510-9 (8i9B) Who Must File ark NOI Form Under the provisions of the Clean Water Act, as amended (33 U.S.C.1261 et.seq.; the Act), federal law prohibits storm water discharges from certain construction activities to waters of the U.S. unless that discharge is covered under a National 'Polluterit Discharge Elimination System (NPDES) Permit. Oppretor(s) of construction sites where one or more acres are disturbed, smeller sites that are part of a larger common plan of development 'or sale where there is a cumulative disturbance of at least one acre, or any other site -specifically 'designated by the Director, must submit an NOI to obtain coverage under an NPDES general permit. Each pamon; firm, pubilo organization, or any other entit►'that meets either of the following criteria must file this form: (1) they have operational control over construction plena and specifications, Including the abipty to make modifications to those plans and specifications; or (2) they have day-to-day operational control Of those activities at the project necessary to ensure compliance with SWPPP requirements or other_ permit conditions. If you have questions about whether you need on NPDES storm water permft, "or'If you need Information to determine whether EPA or your state agency is the permitting authority; refer to www.eps.gov/npdea/stormwateNbpp , or 'teieptionethe•Storm Water Notice Processing Centerot (866) 352-7755. Where to File N01 Form See the appik:abie CGP for Information on whereto send your completed NOI form. Completing the Form Obtain and read a copy of the appropriate EPA. Storm Water Construction General Permit for•your area. To complete this form, type or print, using uppercase letters, In the appropriate areas only. Please place each chalraoter between the marks (abbrevlate if necessary .to' stay within the number of characters allowed for each horn). Use one space for breaks between words, but notfor punctuation marks unless they are needed to clartfyyour response. If you have any questions on this form, refer to www.epa.govlhpdes/stormwater/cgp or telephone the Storm Water Notice Processing Center at (866) 352-7755. Please submit original document with signature in Ink - do not send a photocopied signature. , Section I. Permlt Number Provide the•numberof the psrmitunderwhich you are applying for coverage (see Appendix B ofthe general permit for the list of eligible permit numbers). Section II. Operator information Provide the legal name of the person, firm, public organization, or any other entity that operates the project described in this Form Approved OMB. Nos. 2040-0188•and 2040-0211 application. An operator of a project Is a legal entity that controls at least a portion of site .operatlons and Is not necessarily the site manager. Provide .the employer identification number (EIN from the Internal Revenue Service; IRS), also commonly referred to as your taxpayer ID. If the . .applicant does not have an EIN enter "NW in the space' provided. Also provide the operet6es malling address, telephone number, fax number (optional) and a -mall address (if you would like to be notified via a -moil of NOI approval When available). Correspondence for.the N01 will be sent to this address. Station Ill. Project/Sits information Enter the official or legal name and complete street address, including city, state, zip code, and county or simper government subdivislon of -the project or site. If the projector site lacks a street address, Indicate the general location of the site (e.g., Intersection of State Highways 61 and 34). Complete site information must be provided for permit oovera§e to be granted. The applicant must also provide the latitude and longitude of the facility either In degrees, minutes, seconds; degrees; minutes, decimal; or decimal format. The latitude and longitude of yourfacilltycan be'determined in severaldifferent ways, including through the use of global positioning system (GPS) receivers, U.S. Geological Survey (U.S.G.S.) topographic or quadrangle maps, and EPA's web -based siting tools, among others. Refer to www.epe.gov/npdes/storrnwatedcgp for further guidance on the use of these methodologies. For consistency, EPA requests that measurements be taken from the approximate center of the Construction -she. Applicants must specify which method they used to determine latitude and longitude. If a U.S.G:S. topographic map is used, applicants sire required to specify the scale of the map used. Indicate whether the project Is in Indian country, and It so, provide the name of the Reservation. If the project is in Indian Country Lends that are not part of a Reservation, Indicate "not applicable" In the space provided. Enter the estimated construction start and completion dateB using four digits for the year (i.e., 05/2711998). Enter the estimated area to be disturbed Including. but. not limited to: grubbing, excavation, grading, and utillfias and infrastructure Installation. Indicate to the nearest quarter acre. Note: 1 acre = 43,560 sq. ft. Section IV. SWPPP Information Indicate whether or not the SW PPP was prepared In advance of filing the NOI form. Check the appropriate. box for the location where the SW PPP may be viewed. Provide the name. Instructions for Completing EPA Form 3510-9 Notice of Intent (NOI) for Storm Water Discharges Associated with Construction Activity Under an NPDES General Permit NPDES Form This Form Replaces Form 3510-9 (819B) fax number (optional), and e-mail address (optional) of the contact person If different than that listed In Section 11 of the N61 form. Section V. Discharge Information Enter the name(s) of receiving waterbodies to which the project's storm water will discharge. These should be the first bodies of water that the discharge will reach. (Note: If you discharge to mote than one waterbody, please. indicate all such waters in the .space provided and attach a separate .sheet If necessary.) For example, if the discharge leaves your site and travels through a roadside *swale or a storm sower and then enters a stream that flows to a river, the stream would be the receiving waterbody. Waters of the U.S. Include lakes, streams, creeks, rivers, wetlands, impoundments, estuaries, boys, ooeane, and other surface bodies of water within the confines of the U.S. and U.S. coastal waters. Waters of the U.S. do not Include (ran -made structures created solely for the purpose of wastewater treatment. U.S. Geological Survey topographical maps.may be used to make this determination. If the map does not provide a name, use a format such as 'unnamed tributary to Cross Creek'. tf you discharge into a municipal separate storm sewer system (10134), you must Identify the waterbody into which that portion of the storhn sewer discharges. That Information should be readily available from the operator of the MS4. Indicate whether your storm water dlschotgas from construction activities will be consistent with the assumptions and requirements of applicable EPA approved or established TMDL(a). To answer this question, refer to www.epa.gov/npdes/stormwater/cgp for state- and regional - specific TMDL Information related to the construction general permit. You may also have to contact your EPA regional off lee or state agency. Irthers are no applioable TMDLs or no related requirements, please check the yes' box In the NOI form. Section Vi. Endangered Species Information Indicate for which criterion (Le., A, B, C, D, E, or F) of the permit the applicant Is eligible with regard to protection of federally listed endangered and threatened species, and designated critical habltdt. See Part 1.3.C.e and Appendix C of the permit. If you select criterion F, provide the permit tracking number of the operator underwhich you are certifying ellglbllity. The permit tracking number Is the number assigned to the operator by the Storm Water Notice Processing Center after EPA acceptance of a complete NOI. Section VII. Certificatlon Information All applications, Including NOls, must be signed as follows: For a corporation: By a responsible corporate officer. For'the purpose ofthis Section.a responsible corporate officer means: Form Approved OMB Nos. 204D-0188 and 2040-0211 (1) a president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy -"or decision -making functions for the corporation, or (1) the manager of one or more manufacturing, production, or operating facilities, provided, the manager is authorized to make management declslons which govern the operation of the regulated facility Including having the explicit or ImpI0 duty of.making major capital Investment recommendations, and initiating and directing other comprehensive messures to assure -long-term environmental compliance wifh environmental laws and regulations; the manager can ensure that the necessary systems are established or: action taken to'gather cam plate and accurate Information for permit• application requlrements; and where authority to sign documents has been assigned or delegated to the .manager In accordance with corporate procedures. For a partnership or sole proprietorship: By a general partner or the ptopristor, respectively; or For a municipality, state, federal, 'or other public agency: By either a principal executive officer or ranking elected official. For purposes.of this Part, a principal execufive officer of a federal agency Includes (1) the chief executive officer of the agency, or (1) a senior executive officer having responsibility for the overall operations of a principal geographic unit of the agency (e.g., Regional Administrator of EPA). Include the name and title of the person signing the form and the date of signing. An unsigned or.undated NOI form wig not be considered eligible for permit coverage. Paperwork Reduction Act Notice Public reporting burden for this application Is estimated to average 3.7 hours. This estimate Includes time'for reviewing Instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of Information. An' agency may not conduct or sponsor, and a person is not required to respond to, a collection of Information unless It displays a currently valid OMB control number. Send comments regarding the burden estimate, any other aspect of the collection of information, or suggestions forlmproving this form, Including anysuggestions which may increase or reduce this burden to: Chief, Information Policy Branch 2136, U.S. Environmental Protection, Agency, 1200 Pennsylvania Avenue, NW, Washington, D.C.20460. Include the OMB control number on any correspondence. Do not send the completed form to this address. General Permit Appendix F - Notice of Termination Form and Instructions From the effective date of this permit, operators are to use the Notice of Termination Form contained in this Appendix to terminate permit coverage. Small and Large Construction Activities F-1 This Form Replaces Form 3517-7 (8-98) Form Approved OMB Nos. 2040-0086 and 2040-0211 Refer to the Following Page for Instructions NPDES United States Environmental Protection Agency Form Washington, DC 20480 Notice of Termination (NOT) of Coverage Under an NPDES General Permit for Storm Water Discharges Associated with Construction Acdvfty Submission of this Notice of Termination constlUes notice that the party Identtfled in -Section 11 of this form Is no longer authorized to discharge storm waterassoclated with construction activity under the NPDES program from the,site *nMed'In Sectioh III of this form. All necessary Information must be included on this form. Refer to the instructloris at the end of this form NPDES Storm Water General Perrnit Tracldng Number. Reason for Termination (Check ohly one): Final stabilization has been achieved on ell portions of the site for which you are responsible. 0 Ahother oPetator has'assumed control, according to Appendix G, Sectlon 11.0 of the CGP, over all areas of the site that have not been finally stabilized. Coverage under an 6ltemative NPDES permit has been obtained. For residential construction ony,'temporary stabilization has been oompleted and the residence hes been transferred to the u homeowner. Name: IRS Employer Identification Number (EIN): W Li I I.. 11 I 1 Mailing Address: strut: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 I' I I I I I I I I I I i l l l l i I I I I I I L 11.1 1 I I I I I I I I ate: WZp Code: Phone: �� _ J _ J Fax (optional): E-mail (optional): I I 1 1 .l I I l I I I I l I 1 1 I I 1 i E 1 Pro)ecVSite Nania: Project StreaftoWtion: City: I I I I I I I I I I State: W zip Code: County or similar govemment subdhrision: I I I I I I I I I I I I 1 I 1 1 1 1. 1 I certify under penalty of law that this docurrrert and all aftectunents were prepared under my direction or supervision In aomordance with a system designed to assure that qualified personnel properly gathered and evaluated the hfonrmtion subrrftxi Based on my hq* of the person or who manage the system, or those pww* directly responsible for gathering the hform ftn, the 4ftmation 1% to best of my and belief, true, accurate, and complete. I am aware that there are sigftant penalties for. submitting false Iri mtaffon. Including the possibility of fine and imprfsonrnent for ImMrrg violations.. Print Name: Print Title: Signature: Date: ERA Form 3510.13 (Rev. 6/03) I Instructions for Completing EPA Form 3510-13 Notice of Termination (NOT) of Coverage Under an NPDES General Permit for Storm Water Discharges Associated with Construction Activity NPDES Form This Form Replaces Form.3517-7 (8-98) Whp`May File an NOT Form. . Parmlttees who are ptesentty covered under the EPA -Issued National Pollutant Discharge Elimination System (NPDES) General Permit for Storm Water Discharges Associated with .Construction Activity may submit an NOT form when final stabilization has been achleve4 on all portions of the site for which you are responsible; another operator has assumed control In accordance with AppendV.G, Section I I.0 of the General Permit over all areas of the alto that have not been finally stabilized•, coverage under an alternative NPDES permit has been obtained; orforresldential construction only, temporary stab] ftMtIonbee been completed and the residence has been transferred to the homeowner. 'Final stablbetion' means that all sol disturbing activities at the site have been completed and that a uniform perennlolvegetadve coverwlth a density of at least 70% of the native background vegetative obver for the area has been established on all unpaved,sreas and areas not covered by permanent struclAres, or equhialent permanent stabilization measures (such os the use of dprap, gablbna, or geolextlea) have been employed. Bee 'final stabilization' definition In Appendix A of the Construction Genera► Permit for further guidsnoe where background native vegetation covers leas than 100 percent of the ground, In and or semi -arid areas, for Individual lots in residential construction, and for oonstruotion projects on land used for agricultural purposes. Completing the Form Type or print, using irppereasle letters, In the approprfale areas only. Please plaae..eadh character between the marks. Abbreviate If necessary to stay within the number of characters allowed for each Item. Use only one space for breaks between words, but not for punctustbp marks uNss&they are needed to clarify -your response. if you have - any questions about this form, refer to www.epa.govinpdea/atormwaferlcgp.or telephone the Storm Water Notioe Processing Center at (888) 352-7755. Please submit original document with signature In Ink - do not send a pholocopied aIgnatUre, Section L Permit Number Enter the existing NPDES Storm Water General Permit Traoyng Numberassigned to the project by EPA's Storm Water Notice Processing Center. if you do riot know tiro permit tracking number, refer to. www.eps govinpdoatatonnwalerlcgp or contact the Storm Water Notice Processing Center at (866) 35277755. Indicate your reason for submitting this Notice of Termination by checking the appropriate box. Check only one: Final Stabiitzetlon has been achieved on ell portions of the site for which you are responsible. Another operator has assumed control according to Appendix G, Section 11.0 over an areeb of the alto that have not been finally stabilized. Coverage under an altemetive NPDES permit has been obtained. For residential construction only, I temporary stabilization has been completed and the residence has been transferred to the homeowner. Section IL Operator Information Provide the legal name of the person, firm, public organization, or any other entity that operates the pro)sct described In this application and Is covered by the permit tracking number identified In Section I. The Form Approved OMB Nos. 204U-00BB and 2040-0211 operator of the project is the legal enthy that controls the site operation, rather then the she manager. Provide the employerldentMioetlon number (EIN from the internal Revenue Service; IRS). If the applicant doeb not have an EIN enter 'NA'.In the space provided. Enter the complete mailing address and telephone number of the operator. Optionsk enter the fax number and e-mafi address of the operator. Section III, ProjeWSIts Information Enter the official or legal name and complete street address, Including city, state, zip code, and county or similar govemmerit subdivision of the project or site. If the project or she lacks a street -address, Indicate the general location of the site (e.g., Intersection of State Highways 61 and 34). Complete eke information must be provided for termination of permit coverage to be valid. Section N. Certification information All applications, Including NOls, mdat be signed as follows: For a corporstiorr: By a responsible corporate oflcer. For the purpose of this Part, a responsible corporals officer means: (t) a president, 'Secretary, treeeuret, or vica-prebldent of the corporation In charge of a principal business Tund 6n, or any other person'who performs similar policy- or decision -making functions for the corporation, or QI) the manager of one or more manufacturing, productidn, or operating facilities, provided, the manager Is authorized to make management decisions which govern the operation of the regulated faculty including having the expiioit or Implicit duty of making major capital investment reoommendatlons, and Initiating and directing other comprehensive measures to assure long-term environmental compharice with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate Information for permh application requirements; and where authority to sign documents has been assigned or delegated to the manager In accordance with corporate procedures. For a partnership or sole proprietorship: By a general partner or. the proprietor, respectively; or For a munbipaliy, state, federal, or other public agency: By either a principal executive officer or ranking elected official. Forpurposes of this Part, a principal executive officer of afederal agency Includes (i) the chief executive officer of the agency, or pi) a senior executive officer having responsiblity for the overall operations of a principal geographic unit of the agency (e.g., Regional Administrator of EPA). Include the name and title of the person signing the form and the date of . signing. An unsigned or undated NOT form will not be considered valid termination of permit coverage. Paperwork Reduction Act Notice Pubko reporting burden for fiis application is estimated to average 0.5 hours per notice, Inducing time for reviewing Instructions, searching existing date sources, gathering and maintaining the data needed, and .completing and reviewing the collection otInformation. An agency may not conduct or sponsor, and a person Is not required to respond to, a collection of Information unless it displays a curentiyvalld OMB control number. Send comments regarding the burden estimate, any other aspect of the collection of information, or suggestions for improving this form Including any suggestions .which may Increase or reduce this burden to: Chief, Information Policy Branch, 2138, U.S. Environmental Protection Agency, 1200 Penneylvanle Avenue, NW, Washington, DC 20460. Include the OMB number on any correspondence. Do not sent .the completed form to this address. General Permit Appendix G - Standard Permit Conditions STANDARD PERMIT CONDITIONS 1. Duty To Comply You must comply with all conditions of this permit. Any permit noncompliance constitutes a violation of the Clean Water Act and is grounds for enforcement action; for permit termination, revocation and reissuence, or modification; or for denial of a permit renewal application. A. You must comply with effluent standards or prohibitions established under section 307(a) of the Clean Water Act for toxic pollutants and with standards for sewage sludge use or disposal established under section 405(d) of the CWA within the time provided in the regulations that establish these standards or prohibitions or standards for sewage sludge use or disposal, even if the permit has not yet been modified to incorporate the requirement. B. The Clean Water Act provides that any person who violates section 301, 302, 306, 307, 30B, 318 or 405 of the Act, or any permit condition or limitation implementing any such sections in a permit Issued under section 402, or any requirement imposed in a pretreatment program approved under sections 402(a)(3) or 402(b)(8) of the Act, is subject to a civil penalty not to exceed the maximum amounts authorized by Section 309(d) of the Act and the Federal Civil Penalties Inflation Adjustment Act (28 U.S.C. §2461 note) as amended by the Debt Collection ,Improvement Act (31 U.S.C. §3701 note) (currently $27,500 per day for each violation). The Clean Water Act provides that any person who negligently violates sections 301, 302, 306, 307, 308, 318, or 405 of the Act, or any condition or limitation implementing any of such sections in a permit issued under section 402 of the Act, or any requirement imposed in a pretreatment program approved under section 402(a)(3) or 402(b)(8) of the Act, is subject to criminal penalties of $2,500 to $25,000 per day of violation, or imprisonment of not more than 1 year, or both. In the case of a second or subsequent conviction for a negligent violation, a person shall be subject to criminal penalties of not more than $50,000 per day of = violation, or by imprisonment of not more than 2 years, or both. Any person who knowingly violates such . sections, or such conditions or limitations is subject to criminal penalties of $5,000 to $50,000 per day of violation, or imprisonment for not more than 3 years, or both. In the case of a second or subsequent conviction for a knowing violation, a person shall be subject to criminal penalties of not more thP..n $100,000 per day of violation, or imprisonment of not more than 6 years, or both. Any person who knowingly violates' section 301, 302, 303, 306, 307, 308, 318 or 405 of the Act, or any permit condition or limitation implementing any of such sections in a permit issued under section 402 of the Act, and who knows at that time that he thereby places another person in imminent danger of death or serious bodily injury, shall, upon conviction, be subject to a fine of not more than $260,000 or imprisonment of not more than 15 years, or both. In the case of a second or subsequent conviction for a knowing endangerment violation, a person shall be subject to a fine of not more than $500,000 or by imprisonment of not more than 30 years, or both. An organization, as defined in section 309(c)(3)(13)(iii) of the CWA, shall, upon conviction of violating the imminent danger provision, be subject to a fine of not more than $1,000,000 and can be fined up to $2,000,000 for second or subsequent convictions. C. Any person may be assessed an administrative penalty by the Administrator for violating section 301, 302, 306, 307, 308, 318 orA05 of this Act, or any permit condition or limitation implementing any of such sections in a permit issued under section 402 of this Act. Pursuant to 40 CFR Part 19 and the Act, administrative penalties for Class I violations are not to exceed the maximum amounts authorized by Section 309(g)(2)(A) of the Act and the Federal Civil Penalties Inflation Adjustment Act (28 U.S.C. §2461 note) as amended by the Debt Collection Improvement Act (31 U.S.C. §3701 note) (currently $11,000 per violation, with the maximum amount of any Class I penalty assessed not to exceed $27,500). Pursuant to 40 CFR Part 19 and the Act, penalties for Class II violations are not to exceed the maximum amounts authorized by Section 309(g)(2)(B) of the Act and the Federal Civil Penalties Inflation Adjustment Act (28 U.S.C. §2461 note) as amended by the Debt Collection. Improvement Act (31 U.S.C. §3701 note) (currently $11,000 per day for each day during which the violation continues, with the maximum amount of any Class II penalty not to exceed $137,500). 2. Duty to Reapply If you wish to continue an activity regulated by this permit after the expiration date of this permit, you must apply for and obtain a new permit. Smail and Large Construction Activities G-1 General Permit 3. Need to Halt or Reduce Activity Not a Defense It shall not be a defense for you in an enforcement action that it would have been necessary to halt or reduce the permitted activity in order to maintain compliance with the conditions of this permit. 4. Duty to Mitigate You must take all reasonable steps to minimize or prevent any discharge or sludge use or disposal In violation of this permit which has a reasonable likelihood of adversely affecting human health or the environment. 5. Proper Operation and Maintenance You must at all times properly operate and maintain all facilities and systems of treatment and control (and related appurtenances) which are installed or used by you to achieve compliance with the conditions of this permit. Proper operation and maintenance also includes adequate laboratory controls and appropriate quality assurance procedures. This provision requires the operation of backup or auxiliary facilities or similar systems which are installed by you only when the operation is necessary to achieve compliance with the conditions of this permit. S. Permit Actions This permit may be modified, revoked and reissued, or terminated for cause. Your filing of a request for a permit modification, revocation and reissuance, or termination, or a notification of planned changes or anticipated noncompliance does not stay any permit condition. 7. Property Rights This permit does -not convey any property rights of any sort, or any exclusive privileges. B. Duty to Provide Information You must furnish to EPA, within a reasonable time, any information which EPA may request to determine whether cause exists for,modifying, revoking and reissuing, or terminating this permit or to determine compliance with this permit. You must also fumish to EPA upon request, copies of records required to be kept by this permit. 9. Inspection and Entry You must allow EPA, or an authorized representative (including an authorized contractor acting as a representative of the Administrator), upon presentation of credentials:and other documents as may be required by law, to: A. Enter upon your premises where a regulated facility or activity is located or conducted, or where records must be kept under the conditions of this permit; B. Have access to and copy, at reasonable times, any records that must be kept under the conditions of this permit; C. Inspect at reasonable times any facilities, equipment (including monitoring and control equipment), practices, or operations regulated or required under this permit; and D. Sample or monitor at reasonable times, for the purposes of assuring permit compliance or as otherwise authorized by the Clean Water Act, any substances or parameters at any location. 10. Monitoring and Records A. Samples and measurements taken for the purpose of monitoring must be representative of the monitored activity. B. You must retain records of all monitoring information, including all calibration and maintenance records and all original strip chart recordings for continuous monitoring instrumentation, copies of all reports required by this permit, and records of all data used to complete the application for this permit, for a period of at least 3 years from the date of.the sample, measurement, report or application. This period may be extended by request of EPA at any time. C. Records of monitoring information must include: 1. The date, exact place, and time of sampling or measurements; 2. The individual(s) who performed the sampling or measurements; 3. The date(s) analyses were performed Small and Large Construction Activities G-2 General Permit 4. The individual(s) who performed the analyses; 5. The analytical techniques or methods used; and 6. The results of such analyses. D. Monitoring results must be conducted according to test procedures approved under 40 CFR Part 136 or, in the case of sludge use or disposal, approved under 40 CFR Part 136 unless otherwise specified in 40 CFR Part 503, unless other test procedures have been specified in the permit. E. The Clean Water Act provides that any person who falsifies, tampers with, or knowingly renders inaccurate any monitoring device or method required to be maintained under this permit shall, upon conviction, be punished by a fine of not more than $10,000, or by imprisonment for not more than 2 years, or both. If a conviction of a person is for a violation committed after a first conviction of such person under this paragraph, punishment is a fine of not more than $20,000 per day of violation, or by imprisonment of not more than 4 years, or both. 11. Signatory Requirements A. All applications, including NOls, must be signed as follows: For a corporation: By a responsible corporate officer. For the purpose of this Part, a responsible corporate officer means: (i) a president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy- or decision -making functions for the corporation, or (ii) the manager of one or more manufacturing, production, or operating facilities, provided, the manager is authorized to make management decisions which govem the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long term environmental compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures. - 2. For a partnership or sole proprietorship: By a general partner or the proprietor, respectivelgi br 3. For a municipality, state, federal, or other public agency: By either a principal executive off) er or ranking = elected official. For purposes of this Part, a principal executive officer of a federal agency hicludes (i) the chief executive officer of the agency, or (ii) a senior executive officer having responsibility for the overall operations of a principal geographic unit of the agency (e.g., Regional Administrator of EPA). B. All reports required by this permit, including SWPPPs, must be signed by a person described in Appendix G, Subsection 11.A above or by a duly authorized representative of that person. A person is a duly authorized representative only if: 1. The authorization is made in writing by a person described in Appendix G, Subsection 11.A; 2. The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity such as the position of plant manager, operator of a well or a well field, superintendent, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the company. (A duly authorized representative may thus be either a named individual or any individual occupying a named position); and 3. - The signed and dated written authorization is included in the SWPPP. A copy must be submitted to EPA, if requested. C. Changes to Authorization. If an authorization under Subpart 2.1 is no longer accurate because a different operator has responsibility for the overall operation of the construction site, a new NOI satisfying the requirements of -Subpart 2.1 must be submitted to EPA prior to or together with any reports, information, or applications to be signed by an authorized representative. The change in authorization must be submitted within the time frame specified in Subpart 2.2, and sent to the address specified in Subpart 2.3. D. Any person signing documents required under the terms of this permit must include the following certification: °I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, Small and Large Construction Activities G-3 Genera! Permit to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations." E. The CWA provides that any person who knowingly makes any false statement, representation, or certification in any record or other document submitted or required to be maintained under this permit, including monitoring reports or reports of compliance or non-compliance shall, upon conviction, be punished by a fine of not more than $10,000 per violation, or by imprisonment for not more than 6 months per violation, or by both. 12. Reporting Requirements A. Planned changes. You must give notice to EPA as soon as possible of any planned physical alterations or additions to the permitted facility. Notice is required only when: 1. The alteration or addition to a permitted facility may meet one of the criteria for determining whether a facility is a new source in 40 CFR §122.29(b); or 2. The alteration or addition could significantly change the nature or increase the quantity of pollutants discharged. This notification applies to pollutants which are subject neither to effluent limitations in the permit, nor to notification requirements under 40 CFR §122.42(a)(1). B. Anticipated noncompliance. You must give advance notice to EPA of any planned changes in the permitted facility or activity which may result in noncompliance with permit requirements. C. Transfers. This permit is not transferable to any person except after notice to EPA. EPA may require modification or revocation and reissuance of the permit to change the name of the permittee and incorporate such other requirements as may be necessary under the Clean Water Act. (See 40 CFR §122.61; in some cases, modification or revocation and reissuance is mandatory.) D. Monitoring reports. Monitoring results must be reported at the intervals specified elsewhere in this permit. 1. Monitoring results must be reported on a Discharge Monitoring Report (DMR) or forms provided or specified by EPA for reporting results of monitoring of sludge use or disposal practices. 2. If you monitor any pollutant more frequently than required by the permit using test procedures approved under 40 CFR Part..136 or, in the case of sludge use or disposal, approved under 40 CFR Part 136 unless otherwise specified'in 40 CFR Part 503, or as specified in the permit, the results of this monitoring must be included in the calculation and reporting of the data submitted in the DMR or sludge reporting form specified by EPA. 3. Calculations for all limitations which require averaging of measurements must use an arithmetic mean. E. Compliance schedules. Reports of compliance or noncompliance with, or any progress reports on, interim and final requirements contained in any compliance schedule of this permit must be submitted no later than 14 days following each schedule date. F. Twenty-four hour reporting. 1. You must report any noncompliance which may endanger health or the environment. Any information must be provided -orally within 24 hours from the time you become aware of the circumstances. A written submission must also be provided within five days of the time you become aware of the circumstances. The written submission must contain a description of the noncompliance and its cause; the period of noncompliance, including exact dates and times, and if the noncompliance has not been corrected, the anticipated time it is expected to continue; and steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance. 2. The following shall be included as information which must be reported within 24 hours under this paragraph. a. Any urianticipated bypass which exceeds any effluent limitation in the permit. (See 40 CFR §122.41(g).) b. Any upset which exceeds any effluent limitation in the permit C. Violation of a maximum daily discharge limitation for any of the pollutants listed by EPA in the permit to be reported within 24 hours. (See 40 CFR §122.44(g).) G-4 Small and Large Construction Activities General Permit 3. EPA may waive the written report on a case -by -case basis for reports under Appendix G, Subsection 12.F.2 if the oral report has been received within 24 hours. G. Other noncompliance. You must report all instances of noncompliance not reported under Appendix G, Subsections 12.D, 12.E, and 12.F, at the time monitoring reports are submitted. The reports must contain the information listed in Appendix G, Subsection 12.17. H. Other information. Where you become aware that you failed to submit any relevant facts in a permit application, or submitted incorrect information in a permit application or in any report to the Permitting Authority, you must promptly submit such facts or information. 13. Bypass A. Definitions. 1. Bypass means the intentional diversion of waste streams from any portion of a treatment facility 2. Severe property damage means substantial physical damage to property, damage to the treatment facilities which causes them to become inoperable, or substantial and permanent loss of natural resources which can reasonably be expected to occur in the absence of a bypass. Severe property damage does not mean economic loss caused by delays in production. B. Bypass not exceeding limitations. You may allow any bypass to occur which does not cause effluent limitations to be exceeded, but only if it also is for essential maintenance to assure efficient operation. These bypasses are not subject to the provisions of Appendix G, Subsections 13.0 and 13.D. C. Notice- 1. Anticipated bypass. If you know in advance of the need for a bypass, you must submit prior notice, if possible at least ten days before the date of the bypass. 2. Unanticipated bypass. You must submit notice of an unanticipated bypass as required in Appendix G, Subsection 12.F (24-hour notice). D. Prohibition of bypass. Bypass is prohibited, and EPA may take enforcement action against you for bypass, unless: a. Bypass was unavoidable to prevent loss of life, personal injury, or severe property damage; b. There were no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities, retention of untreated wastes, or maintenance during normal periods of equipment downtime. This condition is not satisfied if adequate back-up equipment should have been installed in the exercise of reasonable engineering judgment to prevent a bypass which occurred during normal periods of equipment downtime or preventive maintenance; and c. You submitted notices as required under Appendix G, Subsection 13.C. 2. EPA may approve an anticipated bypass, after considering its adverse effects, if EPA determines that it will meet the three conditions listed above in Appendix G, Subsection 13.D.1. 14. Upset A. Definition. Upset means an exceptional incident in which there is unintentional and temporary noncompliance with technology based permit effluent limitations because of factors beyond your reasonable control. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance, or careless or improper operation. B. Effect of an upset. An upset constitutes an affirmative defense to an action brought for noncompliance with such technology based permit effluent limitations if the requirements of Appendix G, Subsection 14.0 are met. No determination made during administrative review of claims that noncompliance was caused by upset, and before an action for noncompliance, is final administrative action subject to judicial review. C. Conditions necessary for a demonstration of, upset. A permitteis.who wishes to establish the affirmative defense of upset must demonstrate, through properly signed, contemporaneous operating logs, or other relevant evidence that: 1. An upset occurred and that you can identify the cause(s) of the upset; 2. The permitted facility was at the time being properly operated; and Small and Large Construction Activities G-S Genera! Permit 3. You submitted notice of the upset as required in Appendix G, Subsection 12.F.2.b(24 hour notice). 4. You complied with any remedial measures required under Appendix G, Section 4. D. Burden of proof. In any enforcement proceeding, you, as the one seeking to establish the occurrence of an upset, has the burden of proof. Small and Large Construction Activities G-6 Certified NOI & Letter from EPA Fonn 238(4)-2 09/2006 2. ID NUMBER State of Idaho Department of Water Resources AUTHORIZATION TO ABANDON A WELL WELL OWNER INFORMATION: Date Phone Number Name Mailing Address City State Zip Code WELL LOCATION: Township: Range: Section: Gov't Lot No. County Street Address of well site: City Lot_ Block Subdivision Name: 1/4 1/4 1/4 GPS Location: Lat: Long: 3. TYPE OF WELL: [ ] DOMESTIC [ ] MONITORING [ ] IRRIGATION [ ] OTHER (Describe) 4. WELL INFORMATION: (Well depth, measured, casing size & static water level required) Well Tag Number: Previous Drilling Permit Number: Water Right Number: Well Log on File? [ ] Yes [ ] No *Casing Size: *Material: Temperature: [ ]<85°F [ ]>85°F Flowing Artesian? [ ]Yes [ ] No *Static Water Level: (measured) * Well Depth (measured) 5. REASON FOR ABANDONMENT OF WELL 6. PROPOSED METHOD OF ABANDONMENT: (This Application must be reviewed prior to commencement of abandonment) 7. Drilling Company proposing abandonment 8. License Number Date of abandonment 9. APPLICANTS SIGNATURE DATE: Title (Owner, Firm Representative, Other) Page I of 3 Form 238(4)-2 09/2006 ACTION OF THE DEPARTMENT OF WATER RESOURCES This application for abandonment has been reviewed by IDWR on / 1 mm dd yy This review does not constitute an endorsement by IDWR of the proper abandonment of this well. Pursuant to Section 42-238(12), Idaho Code, All abandonments must meet the requirements of the Administrative Rules for Well Construction Standards. (Abandonment of this well will require the services of a well driller licensed in the State of Idaho unless a waiver has been granted.) Signature of Authorized Department Representative ABANDONMENT REPORT Title ABANDONMENT PROCEDURES: Must describe all details of work preformed including perforations, sealing materials and how casing was remnved PROCEDURE FROM TO WEIGHT / VOLUME DRILLER'S CERTIFICATION I/We certify that all minimum well construction standards were complied with Company Driller Operator Page 2 of 3 License # Date Date Form 238(4)-2 09/2006 State of Idaho Department of Water Resources GENERAL INSTRUCTIONS TO COMPLETE FORM 238(4)-2, AUTHORIZATION TO ABANDON A WELL A. Authorization forin(s) must be complete. Incomplete fonn(s) will be returned to applicant. B. Information provided on form(s) must be accurate. Incorrect information may invalidate authorization. C. Abandonment must be performed by a well driller licensed in the State of Idaho per Idaho Code 42-238 unless a waiver has been granted. D. The well must be abandoned in a manner compliant with IDAPA 37.03.09 Well Construction Standards Rules. E. Form(s) shall be submitted to the IDWR region in which the abandonment is to occur at least seventy-two (72) hours prior to abandonment. Authorization for abandonment must be granted before abandonment work commences. IDWR Northern Region, 7600 N Mineral Dr., Suite 100, Coeur d'Alene, ID 83815. (208) 762-2800. IDWR Southern Region, 1341 Fillmore St., Suite 200, Twin Falls, ID 83301. (208) 736-3033. IDWR Eastern Region, 900 North Skyline, Idaho Falls, ID 83402. (208) 525-7161. IDWR Western Region, 2735 Airport Way, Boise, ID 83705. (208) 334-2190. Page 3 of 3 Stabilization of Construction Entrance/Exit BMP 5 Description A temporary sediment removal device --normally a pad of crushed rock or stone --can be installed at the approach from a construction site to a public roadway to stabilize the road. This BMP is used to limit sediment tracking from vehicles and equipment leaving the construction site onto public rights - of -way and streets. Applications A stabilized construction entrance is appropriate in the following locations: ■ Wherever vehicles are entering or leaving a construction site to or from a public right-of-way, street, alley, sidewalk or parking area. ■ At any unpaved entrance/exit location where there is risk of transporting mud or sediment onto paved roads. Limitations Drainage area - unlimited Minimum bedrock depth — 3 ft NRCS soil type - ABCD Drainage/flood control — no Targeted N Sediment Pollutants NPhosphorus ■ Trace Metals ■ Hydrocarbons Maximum slope — 15% Minimum water table — N/A Freeze/thaw — good Design Width: The width should be at least 10 ft but not less than the full width of Parameters points where ingress or egress occurs. At sites where traffic volume is high, the entrance should be wide enough for two vehicles to pass safely. Flare the entrance where it meets the existing road to provide a sufficient turning radius. Length: The minimum length should be 50 ft except on a single -residence lot where a 30 ft minimum would apply. Depth: Total depth of rock should be at least 6 in. Aggregate: Fractured stone 2 to 8 in. diameter (for the base layer) and crushed stone 2 in. diameter or reclaimed or recycled concrete equivalent (for the top layer). Geotextile (filter fabric): Most installations will include geotextile (filter fabric) with the products placed over the entire area to be covered with aggregate. Work on single residential lots will generally not need geotextile unless there is potential for excessive erosion, a high water table, or other risk factor. The geotextile should be a woven or IDEQ Storm Water Best Management Practices Catalog 30 September 2005 nonwoven fabric consisting only of continuous chain polymeric filaments or yarns of polyester. The geotextile should be inert to commonly encountered chemicals, hydrocarbons, mildew, and rot resistant. Drainage: Runoff from a stabilized construction entrance should drain to a sediment trap or a sediment basin. Piping of surface water under the entrance should be provided as needed. If piping is impossible, install a mountable berm with 5:1 slopes. Dust Control: Dust control should be provided at all times (see BMP 7-Dust Control). Construction n Clear all vegetation, roots, and all other obstructions in preparation for Guidelines grading. ■ Prior to placing geotextile (filter fabric), make sure that the entrance is properly graded and compacted. ■ To reduce maintenance and loss of aggregate, place geotextile over the existing ground before placing the stone for the entrance. ■ Place a 1 ft layer of fractured stone over the entire width and length of the entrance. ■ Place a 4 in. layer of 2 in. crushed stone over the base layer. Maintenance 0 The entrance should be maintained in a condition that will prevent tracking or flow of mud onto public rights -of -way. This may require periodic top dressing with additional 2 in. stone (as conditions demand) and repair or cleaning of any structures used to trap sediment. ■ All materials spilled, dropped, washed, or tracked from vehicles onto roadways or into storm drains should be removed immediately. When necessary, vehicle wheels should be cleaned to remove sediment prior to entrance onto public rights -of -way. When washing is required, it should be done on an area stabilized with aggregate that drains into an approved sediment trap. ■ Trapped sediment should be removed from the site or stabilized on site and prevented from entering storm drains, ditches, or waterways. Disturbed soil areas resulting from removal should be permanently stabilized. ■ The stabilized construction entrance may be removed after final site stabilization is achieved or after the temporary BMPs are no longer needed. IDEQ Storm Water Best Management Practices Catalog 31 September 2005 50' MIN EXISTING - PAVEMENT G" MIN . . . FILTER CLOTH-- / MOUNTABLE BERM BERM (OPTIONAL.) PROFILE EXISTING GROUND 50' MIN 10' STANDARD PLAN VIEW SYMBOL'— CONSTRUCTION SPECIFICATIONS 1 STONE SlZw-USE 2" STONE OR RECLAIMED OR RECYCLED CONCRETE EQUIVALENT. 2 LENGTH -AS REQUIRED, BUT NOT LESS THAN 50 FEET (EXCEPT ON A SINGLE RESIDENCE LOT WHERE A 30 FOOT MINIMUM LENGTH WOULD APPLY). 3 THICKNESS --NOT LESS THAN 6 INCHES, 4 WIDTH --IQ FOOT MINIMUM. BUT NOT LESS IRAN THE FULL WIDTH Ar POINTS WHERE INGRESS OR EGRESS OCCURS. 5 FILTER CLOTH --WILL, BE PACED OVER THC ENTIRE AREA PRIOR TO PLACING OF STONE. FILTER WILL NOT BE REQUIRED ON A SINGLE FAMILY RESIDENCE LOT. 6 SURFACE WATER --ALL SURFACE WATER FLOWING OR DIVERTED TOWARD CONSTRUCTION ENTRANCES SHALL BE PIPED ACROSS THE ENTRANCE. IF PIPING IS IMPRACTICAL. A MOUNTABLE BERM WITH 5--1 SLOPL'S WILL 8E PCRMITrcO. 7 MAINTENANCE -TEE ENTRANCE SiiALL BE MAINTAINED IN A CONDITION WHICH WILL PREVENT TRACKING OR FLOWING OF SEDIMENT ONTO PUBLIC RIGHT-OF-WAY. THIS MAY REQUIRE PERIODIC TOP DRESSING WITH AODITIONAL STONE AS CONDITIONS DEMAND AND REPAIR AND/OR CLEANOUT OF ANY MEASURES USED TO TRAP SEDIMENT. ALL SEDIMENT SPILLED. DROPPED. WASHED OR TRACKED ONTO PUBLIC RIGHTS -OF --WAY MUST BE REMOVED IMMEDIATELY. 8 WASHING -WHEELS SHALL 8E CLEANED TO REMOVE SEDIMENT PRIOR TO ENTRANCE ONTO PUBLIC RIGHTS -OF -WAY. WHEN WASHING IS FtE0UIREO. IT SHALL BE GONE ON AN AREA STABILIZED WITH STONE ANO WHICH DRAINS INTO AN APPROVED SEDIMENT TRAPPING DEVICE. 4 PERIODIC INSPECTION AND NEZMED MAINTENANCE SHALL BE PROVIDED AFTER EAC4 RAIN. U.S. DEPARTMENT CF ,AGRICULTURE STANCARD SOIL CONSERVATION SERVICE' STAE3I LI Z E D CONSTRUCTION DRAWING TCOTHMAN-ORTON ENG;NEERING CO MANY ENTERANCE SCE-1 SCISr. IDAHO McCtLL. 10AP0