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Home My WebLink AboutC1.51_SWPPP Phase 2 SWPPP Plan Contact Information: SWPPP Posting Requirements: SWPPP Legend: SWPPP General Notes: _ OWNER: CHALLENGER DEVELOPMENT, INC. 1. THE CONTRACTOR AND OWNER/DEVELOPER ARE RESPONSIBLE FOR APPLYING FOR OBTAINING LIMITS OF DISTURBANCE 1. ALL STORM WATER WILL BE CONTAINED ON SITE. ii THE PRIMARY CONTACT: THE EPA NOTICE OF INTENT(NOI). PH. FIBER ROLL PER THE STATE OF IDAHO CATALOG OF 2. ALL BMP'S SHALL BE INSPECTED AT A MINIMUM ONCE EVERY 14 DAYS AND WITHIN 24 HOURS OF A LAND 2. A COMPLETE COPY OF THE SWPPP(INCLUDING A COPY OF THE CONSTRUCTION GENERAL FW FW STORM WATER BEST MANAGEMENT PRACTICES BMP STORM EVENT PRODUCING 0.25 INCHES OR GREATER-OR-ONCE EVERY SEVEN DAYS. . GENERAL CONTRACTOR/OPERATOR: PERMIT AND COMPLETED INSPECTION FORMS),N01,AND ACKNOWLEDGEMENT LETTER FROM #64. SEE THE FOLLOWING SHEET FOR DETAILS. INSPECTION FREQUENCY MAY BE REDUCED TO ONCE EVERY MONTH IF: - GROUP PRIMARY CONTACT: EPA MUST BE RETAINED AT THE CONSTRUCTION SITE(OR OTHER LOCATION EASILY A. THE ENTIRE SITE IS TEMPORARILY STABILIZED,OR ACCESSIBLE DURING NORMAL BUSINESS HOURS)AND MADE AVAILABLE FOR REVIEW BY EPA, B. RUNOFF IS UNLIKELY DUE TO WINTER CONDITIONS,OR PH. A STATE,OR OTHER LOCAL APPROVING AGENCY. o� PROPOSED GROUND CONTOUR (ONE-FOOT INTERVAL) C. CONSTRUCTION IS OCCURRING DURING SEASONAL ARID PERIODS(MAY THROUGH SEPTEMBER) N 2661 WITH DIRECTIONAL SLOPE ARROWS IN ARID AREAS AND SEMI-ARID AREAS. ONSITE SWPPP COORDINATOR: 3. A SIGN OR OTHER NOTICE MUST BE POSTED IN A CONSPICUOUS LOCATION NEAR THE 3. DEWATERING IS EXPECTED FOR THIS SITE. ONSITE ESC CONTRACTOR IS RESPONSIBLE FOR ALL COMPANY: CONSTRUCTION ENTRANCE. THE SIGN OR OTHER NOTICE MUST CONTAIN THE FOLLOWING DEWAT RING IS EX MANAGEMENT. PH. INFORMATION: APPROXIMATE EXISTING GROUND CONTOUR -N�-2661- (FIVE-FOOT INTERVAL)WITH DIRECTIONAL 4. STREET SWEEPING WILL BE IMPLEMENTED ON AN AS-NEEDED BASIS AS DETERMINED BY THE ESC PLAN PREPARER: GARY SCHUMACHER • AT A MINIMUM,THE NOTICE MUST INCLUDE THE NPDES PERMIT TRACKING NUMBER SLOPE ARROWS COORDINATOR. AND A CONTACT NAME AND PHONE NUMBER FOR OBTAINING ADDITIONAL PROJECT \ INFORMATION AS WELL AS THE ADDRESS OF THE SITE,THE PERMIT HOLDER'S NAME 5. PROVIDE WASTE CONTAINERS FOR BUILDING MATERIALS IN WASTE STORAGE CONTAINMENT AREA. \ AND THE PHONE NUMBER OF THE STORMWATER POLLUTION HOTLINE(395-8888) R PORTABLE RESTROOM WASTE DISPOSAL DUMPSTERS MUST HAVE LIDS,OR PROVIDE COVER OR A SIMILARLY EFFECTIVE MEANS MUST BE DISPLAYED THROUGHOUT CONSTRUCTION TO MINIMIZE THE DISCHARGE OF POLLUTANTS. KEEP WASTE CONTAINER LIDS CLOSED WHEN NOT IN USE I \ \ , • THE UNIFORM RESOURCE LOCATOR(URL)FOR THE SWPPP(IF AVAILABLE),OR THE AND AT THE END OF THE BUSINESS DAY.DISPOSE AT A FREQUENCY ACCORDING TO CONTAINER SIZE. FOLLOWING STATEMENT:"IF YOU WOULD LIKE TO OBTAIN A COPY OF THE 6. WORKERS SHALL PARK ON THE AREA DESIGNATED AS WORKER PARKING OR AN OFF-SITE LOCATION IF STORMWATER POLLUTION PREVENTION PLAN (SWPPP)FOR THIS SITE,CONTACT THE RECTANGULAR DROP INLET PROTECTION TYPE I PER PRE-APPROVED. EPA REGIONAL OFFICE AT EPA REGION 10 STORMWATER PROGRAM MISHA VAKOC ® BMP#13, SEE SHEET C1.55 FOR DETAILS co \ (VAKOC.MISHA@EPA.GOV) (206)553-6650" 7. ALL DROP INLETS,CATCH BASINS,AND CURB INLETS NOTED ON PLAN SHALL HAVE INLET PROTECTION ``°°°`°`• �\ AND THE FOLLOWING STATEMENT"IF YOU OBSERVE INDICATORS OF STORMWATER PROVIDED. SEE THE SWPPP PLAN DETAILS ON SHEET C1.55 AND MANUFACTURES GUIDELINES FOR `� � � . INSTALLATION INSTRUCTIONS. w•9G N . 6 CONCRETE WASHOUT. SEE THE FOLLOWING SHEET FOR \� � POLLUTANTS IN THE DISCHARGE OR IN THE RECEIVING WATERBODY,CONTACT THE W DETAILS. EPA THROUGH THE FOLLOWING WEBSITE: 8. LOCATE ALL PORTABLE RESTROOMS AS FAR FROM PUBLIC AND PRIVATE STORM DRAIN SYSTEMS AS \ \ HTTPS://WWW.EPA.GOWENFORCEMENT/REPORT-ENVIRONMENTAL POSSIBLE.ANCHOR TO PREVENT VANDALISM. -VIOLATIONS." STAGING AREA AS NOTED. STABILIZE AND PROVIDE 11. SLURRY AND CUTTINGS FROM SAWCUTTING OF CONCRETE OR ASPHALT SHALL BE VACUUMED DURING • THE NOTICE MUST BE LOCATED SO THAT IT IS VISIBLE FROM THE PUBLIC ROAD THAT PERIMETER CONTROLS PER THE STATE OF IDAHO\ CUTTING AND SURFACING OPERATIONS.SLURRY AND CUTTINGS SHALL NOT REMAIN ON PERMANENT j �!� IS NEAREST TO THE ACTIVE PART OF THE CONSTRUCTION SITE. CONCRETE OR ASPHALT PAVEMENT OVERNIGHT.SLURRY AND CUTTINGS SHALL NOT DRAIN TO ANY ' --_ • THE NOTICE MUST USE A FONT LARGE ENOUGH TO BE READILY VIEWED FROM A CATALOG OF STORM WATER BEST MANAGEMENT � F� NATURAL OR CONSTRUCTED DRAINAGE CONVEYANCE.COLLECTED SLURRY AND CUTTINGS SHALL BE I INSTALL TYPE I INLET PRACTICES „ ( \ Fv PUBLIC RIGHT-OF-WAY. DISPOSED OF IN A MANNER THAT DOES NOT VIOLATE GROUNDWATER OR SURFACE WATER QUALITY PROTECTION PRIOR TO EARTH �•� � ,I �� STANDARDS. DISTURBING ACTIVITIES AND �`° F[ 4. THE SWPPP MUST BE SIGNED AND CERTIFIED IN ACCORDANCE WITH APPENDIX I,SECTION 1.11 �1 SITE CONSTRUCTION SIGN. 12. SEE LANDSCAPE AND MATERIALS PLANS FOR INFORMATION CONCERNING FINAL SOIL STABILIZATION REMOVE UPON FINAL OF THE CONSTRUCTION GENERAL PERMIT. MEASURES. / STABILIZATION. 66� ! 5. THE OPERATOR AND OWNER/DEVELOPER ARE RESPONSIBLE FOR OBTAINING THE EPA FORMS STABILIZED ENTRANCE PER THE STATE OF IDAHO 13. ALL EXCESS MATERIALS SHALL BE HAULED OFF SITE AND DISPOSED OF AT AN APPROVED LOCATION. FOR N.O.T. (NOTICE OF TERMINATION). CATALOG OF STORM WATER BEST MANAGEMENT EXCESS MATERIAL MAY BE TEMPORARILY STORED ON SITE(IF APPROVED BY THE OWNER)AT A - \\ \\ PRACTICES BMP#40.THIS SHALL BE MAINTAINED PRE-APPROVED LOCATION. IF MATERIAL IS STOCKPILED FOR MORE THAN 14 DAYS STOCKPILE IS TO BE / CONSTRUCTION ENTRANCE TO BE _. F(ry g sQh s _ j \ \ STABILIZED PER BMP#44. INSTALLED PRIOR TO EARTHWORK t THROUGHOUT CONSTRUCTION UNTIL BASE MATERIAL OPERATIONS AND REMOVED PRIOR TO \ �� \ \ IS INSTALLED. PROVIDE SWEEPING DAILY OR AS 14. ALL WORK SHALL BE DONE IN ACCORDANCE WITH THE LATEST EDITION OF THE ISPWC. FINAL PAVING BASE INSTALLATION. _ > " NEEDED TO REMOVE ANY TRACKING OF MUD AND/OR 15. ALL GRADING,UTILITY,AND ROADWAY CONSTRUCTION SHALL BE LIMITED TO THE HOURS BETWEEN 7:00 DIRT ONTO EXISTING ASPHALT. SEE THE FOLLOWING A.M.AND 9:00 P.M.MONDAY THROUGH FRIDAY AND 8:00 A.M.TO 9:00 P.M.SATURDAY AND SUNDAY, N ° ( I SHEET FOR DETAILS. UNLESS OTHERWISE APPROVED BY THE CONSTRUCTION MANAGER. �- INSTALL TYPE I INLET PROTECTION AS PART OF l � ) 16. ANY MODIFICATIONS TO THIS PLAN REQUIRE APPROVAL OF THE DESIGNER OR THE ONSITE RESPONSIBLE W p INLET INSTALLATION AND Stockpile Management BMP 44: PERSON. OD ,� REMOVE UPON FINAL _ 17. TOTAL DISTURBED AREA IS APPROXIMATELY 23.39± ACRES.. Ca y Q STABILIZATION. I FROM:IDEQ STORM WATER BEST MANAGEMENT PRACTICES CATALOG 2020 CM O - 0 , DESCRIPTION: 18. UPON CONTRACT APPROVAL BY THE CONTRACTOR,IT IS RECOGNIZED THAT THE CONTRACTOR HAS / N •-a REVIEWED THE PLAN DRAWINGS AND THE CONTRACTOR AGREES TO ABIDE BY THE REQUIREMENTS AND /� �y U �� II I STOCKPILE MANAGEMENT PROCEDURES AND PRACTICES ARE DESIGNED TO REDUCE OR CONDITIONS CONTAINED HEREIN. Not-A-Part / ELIMINATE AIR AND STORMWATER POLLUTION FROM STOCKPILES OF SOIL,PAVING INSTALL TYPE I INLET l I I MATERIALS SUCH AS PORTLAND CEMENT CONCRETE(PCC)RUBBLE,ASPHALT CONCRETE PROTECTION AS PART OF a. 1 (AC),ASPHALT CONCRETE RUBBLE,AGGREGATE BASE,AGGREGATE SUB BASE OR Soil Stabilization: cc9�+ y INLET INSTALLATION AND C I I I I PRE-MIXED AGGREGATE,ASPHALT MINDER(SO CALLED"COLD MIX"ASPHALT),AND �. REMOVE UPON FINAL - CD ♦ PRESSURE-TREATED WOOD. 1. IF SEDIMENT ESCAPES THE CONSTRUCTION SITE, OFF-SITE ACCUMULATIONS OF SEDIMENT MUST BE / STABILIZATION. I I APPLICATIONS: REMOVED AT A FREQUENCY SUFFICIENT TO MINIMIZE OFF SITE IMPACTS. Nr` IMPLEMENT IN ALL PROJECTS THAT STOCKPILE SOIL AND OTHER MATERIALS. 2. EXCEPT AS PROVIDED BELOW, STABILIZATION MEASURES MUST BE INITIATED AS SOON AS PRACTICABLE O / _ LIMITATIONS: IN PORTIONS OF THE SITE WHERE CONSTRUCTION ACTIVITIES HAVE TEMPORARILY OR PERMANENTLY DRAINAGE AREA-N/A MAXIMUM SLOPE-N/A CEASED, BUT IN NO CASE MORE THAT 14 DAYS AFTER THE CONSTRUCTION ACTIVITY IN THAT PORTION OF O CD > Oy _ MINIMUM BEDROCK DEPTH-N/A MINIMUM WATER TABLE-N/A THE SITE HAS TEMPORARILY OR PERMANENTLY CEASED. CONCRETE WASHOUT I I NRCS SOIL TYPE-N/A FREEZE/THAW-GOOD 2.1. WHERE STABILIZATION BY THE 14th DAY IS PRECLUDED BY SNOW COVER OR FROZEN GROUND \ �� Oj O�Q ® s o� / - - DRAINAGE/FLOOD CONTROL-NO CONDITIONS,STABILIZATION MEASURES MUST BE INITIATED AS SOON AS PRACTICABLE. / L Q \ j �� TARGETED POLLUTANTS: SEDIMENT 2.2. WHERE CONSTRUCTION ACTIVITY ON A PORTION OF THE SITE IS TEMPORARILY CEASED,AND EARTH LU DISTURBING ACTIVITIES WILL BE RESUMED WITHIN 14 DAYS,TEMPORARY STABILIZATION MEASURES CONSTRUCTION GUIDELINES: DO NOT HAVE TO INITIATED ON THAT PORTION OF THE SITE. also GENERAL THE FOLLOWING TEMPORARY SOIL STABILIZATION PRACTICES SHALL BE IMPLEMENTED ON ALL DISTURBED W CONSTRUCTION LOCATE STOCKPILES A MINIMUM OF 50 FT AWAY FROM CONCENTRATED FLOWS OF AREAS AND/OR WHERE SHOWN ON PLAN,UNLESS CONDITIONS AS LISTED ABOVE DICTATE OTHERWISE: SIGN tr _ (ti4 1 GIi_ F� STORMWATER, DRAINAGE COURSES,AND INLETS. MULCHING (BMP 52) APPLY STRAW, GRASS, COMPOST,WOOD CHIPS OR WOOD FIBERS TO DISTURBED AREAS v TO PREVENT EROSION. SEE THE APPENDIX OF THE ESC SWPPP NARRATIVE FOR A COMPLETE DESCRIPTION 'oe `' INSTALL TYPE I INLET � ° �Q�Q' O 1\ ��,� .� .� / ` � PROTECT ALL STOCKPILES FROM STORMWATER RUN-ON USING ATEMPORARY / N PROTECTION PRIOR TO EARTH `<c�p �\ J� PERIMETER SEDIMENT BARRIER SUCH AS BERMS, DIKES, FIBER ROLLS,SILT FENCES, A�� ® 3. GEOTEXTILE (BMP 53) - APPLY NONBIODEGRADABLE SYNTHETIC FABRIC TO DISTURBED AREAS TO CD DISTURBING ACTIVITIES AND �Q Q mac, \C O� J ( 8S ^` ti s / SANDBAGS,OR GRAVEL BAGS.IMPLEMENT WIND EROSION CONTROL PRACTICES AS PREVENT EROSION. SEE THE APPENDIX OF THE ESC/SWPPP NARRATIVE FOR A COMPLETE DESCRIPTION, \ REMOVE UPON FINAL APPROPRIATE ON ALL STOCKPILED MATERIAL. AND/OR: 0 STABILIZATION. PLACE BAGGED MATERIALS ON PALLETS AND UNDER COVER. 4. MATTING (BMP 54) - APPLY BIODEGRADABLE WOVEN OR JUTE FIBER MAT TO DISTURBED AREAS TO - / PREVENT EROSION.SEE THE APPENDIX OF THE ESC/SWPPP NARRATIVE FOR A COMPLETE DESCRIPTION. Z tr r ✓ o o i ( J / PROTECTION OF NON-ACTIVE STOCKPILES O 0 / CONSTRUCTION (/ rJ 8 • SOIL STOCKPILES:DURING THE RAINY SEASON,SOIL STOCKPILES SHOULD BE COVERED OR PROTECTED - UCTION ENTRANCE TO BE v d o�� < < 1 WITH SOIL STABILIZATION MEASURES AND A TEMPORARY PERIMETER SEDIMENT BARRIER AT ALL TIMES. w INSTALLED PRIOR TO EARTHWORK J �c� o�j vl�T �o J \h�) �7 / DURING THE NON-RAINY SEASON,SOIL STOCKPILES SHOULD BE COVERED OR PROTECTED WITH A y Q OPERATIONS AND REMOVED PRIOR TO / (� C �a TEMPORARY PERIMETER SEDIMENT BARRIER PRIOR TO THE ONSET OF PRECIPITATION. f �~ y ? 5 ` • STOCKPILES OF PCC RUBBLE,AC,ASPHALT CONCRETE RUBBLE,AGGREGATE BASE,OR AGGREGATE SUB / FINAL PAVING BASE INSTALLATION. 1 Q° ( � o Q �a �� % o o co ` BASE:DURING THE RAINY SEASON,THE STOCKPILES SHOULD BE COVERED OR PROTECTED WITH A � ��oo o j ,. ✓�, � r' Revisions 1� \ / �� s o a a Q P 1 TEMPORARY SEDIMENT PERIMETER BARRIER AT ALL TIMES. DURING THE NON-RAINY SEASON,THE o li STOCKPILES SHOULD BE COVERED OR PROTECTED WITH A TEMPORARY PERIMETER SEDIMENT BARRIER 1. AGENCY COMMENTS 07-28-25 PRIOR TO THE ONSET OF PRECIPITATION. n / J ~ • STOCKPILES OF"COLD MIX":DURING THE RAINY SEASON,COLD MIX STOCKPILES SHOULD BE PLACED ON 1 Gji l / p Let 4 AND COVERED WITH PLASTIC OR COMPARABLE MATERIAL AT ALL TIMES DURING THE NON-RAINY j ) �� \ - _ _ ' SEASON,COLD MIX STOCKPILES SHOULD BE PLACED ON AND COVERED WITH PLASTIC OR COMPARABLE INSTALL TYPE I INLET � �� ' � � o - ' \ �v MATERIALS PRIOR TO THE ONSET OF PRECIPITATION PROTECTION AS PART OF FGL -` + �� ) �J STOCKPILES/STORAGE OF PRESSURE-TREATED WOOD: DURING THE RAINY SEASON,PRESSURE-TREATED \ INLET INSTALLATION AND • / WOOD SHOULD BE COVERED WITH PLASTIC OR COMPARABLE MATERIAL AT ALL TIMES.DURING THE o y� - NON-RAINY SEASON,PRESSURE-TREATED WOOD SHOULD BE COVERED WITH PLASTIC OR COMPARABLE REMOVE UPON FINAL Ip _ / /r v � � I ( STABILIZATION. �� - - / L V �� i MATERIAL AT ALL TIMES. CONSTRUCTION ENTRANCE TO BE PROTECTION OF ACTIVE STOCKPILES Q o O • ALL STOCKPILES SHOULD BE PROTECTED WITH A TEMPORARY LINEAR SEDIMENT BARRIER PRIOR TO THE r 1 - INSTALLED PRIOR TO EARTHWORK C� ti ( ONSET OF PRECIPITATION. OPERATIONS AND REMOVED PRIOR TO • STOCKPILES OF"COLD MIX"SHOULD BE PLACED ON AND COVERED WITH PLASTIC OR COMPARABLE FINAL PAVING BASE INSTALLATION. MATERIAL PRIOR TO THE ONSET OF PRECIPITATION. INSTALL TYPE I INLET S a I r' / \ u � MAINTENANCE \ ^ / PROTECTION AS PART OF \FW J�Ja� \\ / • INSPECT AND VERIFY THAT BMPS ARE IN PLACE PRIOR TO THE COMMENCEMENT OF ASSOCIATED \ \ INLET INSTALLATION AND 'L �/ FW / / ACTIVITIES.WHILE ACTIVITIES ASSOCIATED WITH THE BMP ARE UNDERWAY,INSPECT WEEKLY DURING / REMOVE UPON FINAL / FW-�, / THE RAINY SEASON AND AT 2-WEEK INTERVALS IN THE NON-RAINY SEASON TO VERIFY CONTINUED BMP v A ( °�� /r a• ° STABILIZATION. INSTALL TYPE I INLET - _ IMPLEMENTATION. PROTECTION AS PART OF - - - -- • REPAIR AND/OR REPLACE PERIMETER CONTROLS AND COVERS AS NEEDED TO KEEP THEM FUNCTIONING - - _ ---- - - -- FW PROPERLY. SZONAL C INLET INSTALLATION AND Rio, a lata Dr ��5 N \ 1 J o REMOVE UPON FINAL Dv \ STABILIZATION. Q pooa c o FW\ FW -/ r 10961 o C C J c <� q p`� � 7 g �� 1� S � o°p \� �� (1 o J�s�OF \0 0 DEN _- �. INSTALL TYPE I INLET � 1 PROTECTION AS PART OF p 0712512025 / INLET INSTALLATION AND G \ \� � / � -� �� o ✓ ` � �o � � I / \ o Project No.: 121172 REMOVE UPON FINAL ,S' Date of Issuance: 07-28-2025 J STABILIZATION. Project Milestone: PERMIT SUBMITTAL SWPPP Phase 2 SWPPP Plan =T Phase 2 SWPPP Plan 1°°' 2°°' --t 1 . 51 Horizontal Scale: 1" = 100, ��o