CS - Scheme A - Landscape Plan 1-8-210'10'20'30'
E. Pressure Regulator: Netafim Model PRV075HF35, 3/4", one per zones. F. Flushing Valve: Netafim Model TLFV-1, two per zone (each end). G. Filter: Netafim Model DF075-120, 3/4" filter; one per drip zone. H. Air Relief Valve: Netafim Model TLAVRV,2.5 MISCELLANEOUS A. Chemicals: primer and solvent glue as required by pipe manufacturer. B. Valve box - high impact plastic, green in color. C. Valve cover and frame - compatible with valve box with provision for locking. D. Drainage backfill - clean gravel or crushed stone, graded from 3" maximum to 3/4" minimum.PART 3 - EXECUTION3.1 GENERAL A. Install system to provide for adequate protection against freeze damage. B. Install system in accordance with approved Contractor design drawings. All deviations from the plans must be approved, and clearly recorded on record drawing. C. Install system and components in strict accordance with manufacturer's recommendations. D. Install quick coupler(s) on main supply line, approximately equal spacing, at valve box locations or intervals of approximately 200 feet, whichever is greater. Locate adjacent to paved surfaces, at valve boxes where practical.3.2 SURFACE CONDITIONS A. Examine the areas and conditions under which work will be performed. Notify Contractor of conditions detrimental to timely and proper completion of Section work. Do not proceed until unsatisfactory conditions are corrected. B. Locate all underground utilities and structures and notify Architect of any conflict with Section work. Protect structures and utilities. Repair or replace said structures or utilities damaged by this work at no cost to the Owner.3.3 SLEEVING A. Sleeving installed by others. Coordinate with other trades.3.4 TRENCHING AND BACKFILLING A. Trenching and backfilling shall be per applicable ISPWC Section. B. Cut trenches straight and without abrupt grade changes to allow the following minimum cover: 1. Main Lines and Sleeving: 18 inches. 2. PVC Laterals: 12 inches. C. Surround lines with 2 inches of clean rock-free material on all sides.3.5 MISCELLANEOUS VALVES A. Install manual drain valves up stream. Install devise at mainline tap in accordance with manufacturer requirements for complete operation. Install backflow provision and connect to controller.3.6 CIRCUIT VALVES A. Install in valve box, arranged for easy adjustment and removal. 1. Provide union on downstream side. 2. Adjust automatic control valves to provide flow rate of rated operating pressure required for each sprinkler circuit.3.7 PIPE INSTALLATION A. Lay PVC pipe in accordance with standard and acceptable practice. Thrust blocks to be used at points of intersection and change of direction in main line pipe as per manufacturer's recommended specifications. Install manual drains. B. PVC pipe joints, solvent welded except as indicated. Cut pipe square, deburr, wipe from surface all saw chips, dust, dirt, moisture and any foreign matter which may contaminate the cemented joint. Apply cleaner/primer and solvent cement, make joints in accordance with manufacturer's recommendations. Use Teflon thread sealant (tape) at all threaded joints. C.Contractor shall size pipe according to schedule provided. Flow velocities shall not exceed 5 feet/second in all cases. Lateral lines shall be laid out and installed per zone to balance the pressure loss and provide minimum fluctuation in system operating pressures. Pipe Size Pipe Section Pipe Size Pipe Section 3/4" 0-9 GPM 1 1/2" 26-34 GPM 1" 10-17 GPM 2" 35-50 GPM 1 1/4" 18-25 GPM 2 1/2" 51-80 GPM D. Techline Drip Line: Place in shallow furrow at 1"-2" below finish topsoil grade, below layer of specified mulch. Lay in uniform grid pattern in groundcover/shrub areas (rows 18"-24" apart max). Coil 20 linear feet at each balled and burlapped tree around base and to allow for tree removal if required. Staple drip line every 36" max. Flush all lines with full head of water prior to installation of flush valves at end of circuit runs. E. Flush Valves: Install flush valve at end of each drip line run.3.8 SPRINKLER HEADS A. Flush circuit lines with full head of water prior to head installation. 1. Install heads at level with mulch 2. Locate part-circle shrubbery heads to maintain a minimum distance of six inches (6") from walls and four inches (4") from other boundaries unless otherwise indicated. Keep overspray to a minimum.3.9 CONTROL WIRE INSTALLATION A. Bury wires beside or below main line pipe in same trench. B. Bundle multiple wires together with tape at ten feet (10') maximum intervals. C. Provide 36 inch loop in wires at each valve where controls are connected and at 100' maximum intervals between. D. Make all electrical joints (splices) in boxes only. Make electrical joints waterproof. Scotch-Lock connectors, or approved.3.10 AUTOMATIC CONTROLLER A. Install on site as approved. Verify location with Owner Representative. B. Install typewritten legend inside controller door.3.11 TESTING A. Do not allow or cause any work of this Section to be covered up or enclosed until it has been inspected and tested. B. Pressure testing: 1. Make necessary provision for thoroughly bleeding the line of air and debris. 2. Before testing, cap all risers, and install all valves. 3. Fill all main supply lines with water. Pressurize to 100 psi. Close air supply and test for leakage. Test shall be approved if no greater than 5 psi loss occurs in 15 minutes. 4. Fill all zone lines with water to static pressure. Hold for 15 minutes. Inspect for leakage. 5. Contractor shall provide all required testing equipment and personnel. Test shall be performed in presence of Architect. Contractor shall make notice of test (48) hours in advance. 6. Provide required testing equipment and personnel. 7. Repair leaks, and retest until acceptance by the Architect. C. Coverage inspection: upon completion of all systems, perform a coverage test to determine if coverage of water afforded all areas is complete, adequate and uniform. Change heads, nozzles, orifices and/or adjustment as directed to provide uniform coverage. D. Final inspection: 1. Clean, adjust, and balance all systems. Verify that: a. Remote control valves are properly balanced; b. Heads are properly adjusted for radius and arc of coverage; c. The installed system is workable, clean and efficient. E. Winterization: Winterize system at the end of first season of system operation. Review procedures with Owner Representative.END OF SECTIONSECTION 32 84 00 - SPRINKLER IRRIGATION (PERFORMANCE)PART 1 - GENERAL1.1 CONDITIONS AND REQUIREMENTS: A. General and Supplementary Conditions, and Division 1 General Requirements.1.2 SUMMARY A. Work included: 1. Provide and install a complete and operating automatic irrigation system for all lawn and planting areas. 2. Connect to main water supply at existing site stubout as provided. 3. Sleeving under paved areas (by others) 4. Obtain and pay for all permits and fees for the work of this section. 5. Perform work on a design/construct basis, subject to the requirements of the Contract Documents, applicable codes, and good design practice. 6. Winterization of system.1.3 SUBMITTALS A. Within 30 days after Contractor's receipt of Owner's Notice to Proceed, submit: 1. Manufacturer's printed product information and catalog cut sheets for all system components; five copies. B. Shop Drawings: Submit shop drawings for underground irrigation system including plan layout and details illustrating location and type of head, type and size of valve, piping circuits, circuit GPM, pipe size, controls, and accessories. C. Record Drawings: At completion of this work, submit to the Contractor: 1. Record Drawings; reproducible and five prints. 2. Operations and Maintenance information (2 copies), including: a. Information including descriptive details, parts list, specifications, maintenance schedules and procedures for system components. b. Operation, adjustment of system and components instructions. c. Winterization procedures. d. Schedule indicating required open valve time to produce given precipitation amounts and seasonal adjustments. e. Warranties and guarantees. f. Submit five copies.1.4 GUARANTEE A. Guarantee in writing all materials, equipment and workmanship furnished to be free of all defects of workmanship and materials. Within one year after date of Substantial Completion repair or replace all defective parts or workmanship that may be found at no additional cost to Owner. B. Fill and repair all depressions and replace all necessary lawn and planting which result from the settlement of irrigation trenches for one year after date of Substantial Completion. C. Supply all manufacturer's printed guarantees.1.5 QUALITY ASSURANCE A. Contractor shall be licensed in the State in which this work is being performed. B. Contractor shall have at least two years prior experience in projects of equal or larger scope. Provide minimum of three references and list of similar projects with owners' names, addresses, and phone numbers, when requested by Owner. C. Contractor shall employ on site at all times a foreman who is thoroughly experienced and competent in all phases of the work of this Section.1.6 SYSTEM DESCRIPTION A. Design requirements: 1. Minimum water coverage: Planting areas - 85%, Lawn areas - 100% 2. Layout system to obtain optimum coverage using manufacturer's standard heads. Spray on walks, walls or paved areas is not acceptable. 3. Zoning shall be designed for optimum use of available pressure and efficient distribution for types of plantings and shapes of planting areas. 4. Design pressures: Install pressure regulating equipment as necessary. 5. Provide/install approved fixed tee or coupling device for air blow winterization. Location shall be on main supply line downstream from main shut off valve. 6. Install approved backflow prevention device in conformance with local or prevailing codes, and in approved site location. Provide for drainage without erosive damage.1.7 EXTRA EQUIPMENT A. In addition to installed system, furnish owner with the following: 1. Valve operating key and marker key. 2. Wrench for each sprinkler head cover type. 3. Two (2) sprinkler head bodies of each size and type. 4. Two (2) nozzles for each size and type used. B. Store above items safely until Substantial Completion. C. Deliver above items at Substantial Completion.PART 2 - PRODUCTS2.1 PIPE AND FITTINGS A. PVC 1120, ASTM D-1784, permanently marked with manufacturer's name, schedule rating, size, type. Solvent-weld type: 1. Pipe: a. Pressure lines: Schedule 40 solvent weld. b. Lateral lines: Class 200 pvc. c. Sleeving: Class 200 pvc. 2. Fittings: Schedule 40 PVC, solvent-weld type. Install threaded joints where required at valves, risers, etc. 3. Risers: Lawn and shrub heads - flexible and damage-resistant plastic "polypipe" riser. 4. Solvent: NSF approved solvent for Type I & II PVC. B. Polyethylene Pipe 1. Pipe: Class 100, 3/4" lateral line, for use on drip irrigation zone(s) where drip tubing is not otherwise used. 2. Fittings: Schedule 80 PVC. 3. Clamps: Stainless Steel. C. Drip Line: Netafim Techline Dripperline, with .6 GPH drippers at 18" spacing.2.2 SPRINKLER HEADS A. Description: Appropriate for application in throw, pressure and discharge. Each type of head shall be of a single manufacturer. 1. Lawn heads: pop-up type. B. Manufacturer: Rainbird, Hunter, Weathermatic Irrigation Company.2.3 AUTOMATIC CONTROL SYSTEM A. General; Furnish low voltage system manufactured expressly for control of automatic circuit valves of underground irrigation systems. Provide unit of capacity to suit number of circuits as indicated. B. Control Enclosure: Manufacturer's standard wall mount with locking cover, complying with NFPA 70. C. Circuit Control: each circuit variable from approximately 5 to 60 minutes. Including switch for manual or automatic operation of each circuit. D. Timing Device: Adjustable 24-hour and 7 or 14 day clocks to operate any time of day and skip any day in a 7 or 14 day period. E. Wiring: Solid or stranded direct-burial type as recommended by manufacturer of control unit; type AWG-UF, UL approved.2.4 VALVING A. Manual valves: brass or bronze for direct burial, gate valves, 150 pound class, threaded connection with cross type handle designed to receive operating key. B. Automatic circuit valves: high impact plastic with corrosion-resistant internal parts. Low power solenoid control, normally closed, with manual flow adjustment; same manufacturer as control unit. 1. Standard sprinkler valve shall be Rainbird PEB-PRS-B. Use scrubbervalve if not connected to potable water. 2. Drip Control Zone Kit: Hunter PCZ-101. C. Quick coupler valve: brass or bronze construction with hinged top. One per zone or valve grouping. D. Manual drain valves: 1. Bronze construction, straight type, 150 pound class, threaded connections, with cross type operating handle designed to receive operating key. Calco, Champion 100, or approved equal. 2. Size: 3/4 inch.1.7 SEQUENCING AND SCHEDULINGA. Planting Time: Proceed with, and complete landscape work as rapidly as portions of sitebecome available, working within seasonal limitations for each kind of landscape workrequired.1.Plant or install all plant materials during normal planting seasons from 15 March to15 November.2.Correlate planting with specified maintenance periods to provide maintenance fromdate of substantial completion.B. Coordination with Lawns: Plant trees and shrubs after final grades are established and priorto planting of lawns, unless otherwise acceptable to Architect. If planting of trees and shrubsoccurs after lawn work, protect lawn areas and promptly repair damage to lawns resultingfrom planting operations.1.8 SPECIAL PROJECT WARRANTYA. Warranty lawns through specified lawn maintenance period, until Final Project Acceptance.B. Warranty trees and shrubs, for a period of one year after date of substantial completion,against defects including death and unsatisfactory growth, except for defects resulting fromneglect by Owner, abuse or damage by others, or unusual phenomena or incidents beyondLandscape Installer's control.C. Remove and replace trees, shrubs, or other plants dead or in unhealthy condition duringwarranty period. Make replacements during growth season following end of warranty period.Replace trees and shrubs which are in doubtful condition at end of warranty period; unless,in opinion of Architect, it is advisable to extend warranty period for a full growing season.PART 2 - PRODUCTS2.1 TOPSOILA. If deemed usable, native topsoil shall be stockpiled for re-use in landscape work. Topsoilshall be fertile, friable, natural loam, surface soil, reasonable free of subsoil, clay lumps,brush, weeds, roots, stumps, stones larger than 1 inch in any dimension, and otherextraneous or toxic matter harmful to plant growth.1. Contractor shall send a minimum of three (3) representative topsoil samples for testing.See testing requirements below. Contractor is responsible for whatever soil additives arerecommended by the tests. Submit to Architect for approval. Compost will be added toother additives and added regardless of test results.B. If quantity of stockpiled topsoil is insufficient, contractor to provide imported topsoil that isfertile, friable, natural loam, surface soil, reasonably free of subsoil, clay lumps, brush,weeds and other litter, and free of roots, stumps, stones larger than 1 inches in anydimension, and other extraneous or toxic matter harmful to plant growth.1. Obtain topsoil from local sources or areas with similar soil characteristics to that of projectsite. Obtain topsoil only from naturally well-drained sites where topsoil occurs in a depthof not less than 4 inches. Do not obtain from bogs or marshes.2. Composition: Topsoil shall contain from 1 to 20% organic matter as determined by theOrganic Carbon, 6A, Chemical Analysis Method described in USDA Soil SurveyInvestigation Report No. 1. Maximum particle size, 3/4-inch, with maximum 3% retainedon 1/4-inch screen.Other components shall conform to the following limits:pH6.5 to 7.5Soluble Salts600 ppm maximumSilt 25-50%Clay10-30%Sand20-50%3. Contractor shall submit representative soil report on imported topsoil proposed for use forapproval. Report shall meet standards below. Contractor is responsible for whateversoil additives are recommended by the test. Compost will be in addition to otheradditives and added regardless of test results.C. Soil Testing1. Soil tests are required for this project (see above for requirements). Test shall be providedas follows:a. Provide certified analysis at time of sample submitted (three samples importedtopsoil). Amend soils per chemist's recommendations and as herein specified unlessotherwise approved by Architect.2. Test shall include, but not limited to recommendations on chemical distributions, organiccontents, pH factors, and sieve analysis as necessary. Test #1T by WesternLaboratories (1-800-658-3858) is required.3. Contractor is responsible for whatever soil additives are recommended by the soil testinglaboratory.4. Contractor shall coordinate, obtain and pay for all soil tests.5. If regenerative noxious weeds are present in the soil, remove all resultant growthincluding roots throughout one-year period after acceptance of work, at no cost to Owner.2.2 pH ADJUSTERSA. When pH does not comply with this specification, commercial grade aluminum sulfate shallbe used to adjust soil pH.2.3 SOIL AMENDMENTSA. Compost: Compost: “Cascade Compost” from Cloverdale Nursery (208) 375-5262 andNuSoil Compost (208) 629-6912 or approved equal in equal amounts by volume.B. Commercial Fertilizer: Fertilizer shall be complete, standard commercial brand fertilizer. Itshall be free-flowing and packaged in new waterproof, non-overlaid bags clearly labeled asto weight, manufacturer, and content. Protect materials from deterioration during deliveryand while stored at site.1. Commercial fertilizer "A" for trees and shrubs during planting; slow release AgriformPlanting 5-gram tablets 20-10-5 type or equal.2. Commercial fertilizer "B" for lawn areas, applied to bed prior to seeding or sodding, to be16-16-17 applied at the rate of ten pounds per acre.3. Commercial fertilizer "C" for lawn areas three to four weeks after planting (sod) or afterfirst mowing (seed). Organic Fertilizer Milorganite (6-0-2) type or equal.C. Herbicide: Pre-emergent for topical application in planting beds. Oxiadiazon 2G brand orpre-approved equal. Use in accordance with manufacturer's recommendation on all plantingbeds.2.4 PLANT MATERIALSA. Quality: Provide trees, shrubs, and other plants of size, genus, species, and variety shownfor landscape work and complying with recommendations and requirements of ANSI Z60.1"American Standard for Nursery Stock".B. Deciduous Trees: Provide trees of height and caliper scheduled or shown with branchingconfiguration recommended by ANSI Z60.1 for type and species required. Single stem treesexcept where special forms are shown or listed.C. Deciduous Shrubs: Provide shrubs of the height shown or listed, not less than minimumnumber of canes required by ANSI Z60.1 for type and height of shrub.D. Coniferous and Broadleafed Evergreens: Provide evergreens of sizes shown or listed.Dimensions indicate minimum spread for spreading and semi-spreading type evergreensand height for other types, such as globe, dwarf, cone, pyramidal, broad upright, andcolumnar. Provide normal quality evergreens with well balanced form complying withrequirements for other size relationships to the primary dimension shown.2.5 GRASS MATERIALSA.Lawn sod: Provide strongly rooted sod, not less than 1 growing season old, and free ofweeds and undesirable native grasses. Provide only sod capable of growth anddevelopment when planted (viable, not dormant).1.Provide sod of uniform pad sizes with maximum 5% deviation in either length or width.Broken pads or pads with uneven ends will not be acceptable. Sod pads incapable ofsupporting their own weight when suspended vertically with a firm grasp on upper 10%of pad will be rejected.B. Provide sod composed of: Rhizomatous Tall Fescue (RTF) from the The Turf Company, Meridian, ID (208) 888-3760 or approved equal.2.6 MISCELLANEOUS LANDSCAPE MATERIALSA. Anti-Desiccant: Emulsion type, film-forming agent designed to permit transpiration, but retardexcessive loss of moisture from plants. Deliver in manufacturer's fully identified containersand mix in accordance with manufacturer's instructions.B. Mulch: Mulch for planting beds shall be medium ground bark mulch, free of splinters,consistent in appearance, and shall contain no toxic substance detrimental to plant life.C. Stakes and Guys: Provide stakes and deadmen of sound new hardwood, treated softwood,or redwood, free of knot holes and other defects. Provide wire ties and guys of 2-strand,twisted, pliable galvanized iron wire, not lighter than 12 ga. with zinc-coated turnbuckles.Provide not less than 2 inch diameter rubber or plastic hose, cut to required lengths and ofuniform color, material, and size to protect tree trunks from damage by wires.SECTION 32 90 00 - LANDSCAPE WORKPART 1 - GENERAL1.1 RELATED DOCUMENTSA. Drawings and general provisions of Contract, including General and SupplementaryConditions and Division 1 Specification Sections.1.2 SUMMARYA. This Section includes provisions for the following items:1. Trees.2. Shrubs; Ground cover.3. Lawns.4. Topsoil and Soil Amendments.5. Miscellaneous Landscape Elements.6. Initial maintenance of landscape materials.B. Related Sections: The following sections contain requirements.1. Underground sprinkler system is specified in Section 32 84 00 - Irrigation1.3 QUALITY ASSURANCEA. Subcontract landscape work to a single firm specializing in landscape work.B. Source Quality Control:1. General: Ship landscape materials with certificates of inspection required by governingauthorities. Comply with regulations applicable to landscape materials.2. Do not make substitutions. If specified landscape material is not obtainable, submit proofof non-availability to Architect, with proposal for use of equivalent material.3. Analysis and Standards: Package standard products with manufacturer's certifiedanalysis. For other materials, provide analysis by recognized laboratory made inaccordance with methods established by the Association of Official Agriculture Chemists,wherever applicable.4. Trees, Shrubs and Groundcovers: Provide trees, shrubs, and groundcovers of quantity,size, genus, species, and variety shown and scheduled for work complying withrecommendations and requirements of ANSI Z60.1 "American Standard for NurseryStock". Provide healthy, vigorous stock, grown in recognized nursery in accordance withgood horticultural practice and free of disease, insects, eggs, larvae, and defects such asknots, sun-scald, injuries, abrasions, or disfigurement.5. Label at least one tree and one shrub of each variety with attached waterproof tag withlegible designation of botanical and common name.a. Where formal arrangements or consecutive order of trees or shrubs are shown, selectstock for uniform height and spread.6. Inspection: The Architect may inspect trees and shrubs either at place of growth or at sitebefore planting, for compliance with requirements for genus, species, variety, size, andquality. Architect retains right to further inspect trees and shrubs for size and condition ofballs and root systems, insects, injuries and latent defects, and to reject unsatisfactory ordefective material at any time during progress of work. Remove rejected trees or shrubsimmediately from project site.1.4 SUBMITTALSA. General: Submit the following in accordance with Conditions of Contract and Division 1Specification Sections.B. Plant and Material Certifications:1. Certificates of inspection as required by governmental authorities.2. Manufacturer's or vendor's certified analysis for soil amendments and fertilizer materials.3. Label data substantiating that plants, trees, shrubs and planting materials complyspecified requirements. C. Mulch: Submit 1 gal bag of mulch sample for approval.1.5 DELIVERY, STORAGE AND HANDLINGA. Sod: Time delivery so that sod will be placed within 24 hours after stripping. Protect sodagainst drying and breaking of rolled strips.B. Trees and Shrubs: Provide freshly dug trees and shrubs. Do not prune prior to deliveryunless otherwise approved by Architect. Do not bend or bind-tie trees or shrubs in suchmanner as to damage bark, break branches, or destroy natural shape. Provide protectivecovering during delivery. Do not drop balled and burlapped stock during delivery.C. Deliver trees and shrubs after preparations for planting have been completed and plantimmediately. If planting is delayed more than 6 hours after delivery, set trees and shrubs inshade, protect from weather and mechanical damage, and keep roots moist by covering withmulch, burlap or other acceptable means of retaining moisture.D. Do not remove container-grown stock from containers until planting time.E. Do not drop or dump materials from vehicles during delivery or handling. Avoid any damageto rootballs during deliver, storage and handling.1.6 JOB CONDITIONSA. Utilities: Determine location of underground utilities and work in a manner which will avoidpossible damage. Hand excavate, as required. Maintain grade stakes until removal ismutually agreed upon by parties concerned.B. Excavation: When conditions detrimental to plant growth are encountered, such rubble fill,adverse drainage conditions, or obstructions, notify Architect before planting.C. Adjacent Landscape: Protect planted areas adjacent to construction area. Replace orrecondition to prior conditions at project completion.D. Tree Protection:1.Existing trees to remain should be protected before any site/demolition Tree protectionarea is defined as the area within the drip line diameter.2.Place protective fencing around a tree protection zone. Protective fencing shouldconsist of a highly visible, physical barrier (a minimum 6-foot high, chain-link fence isrecommended) to be placed 10 ft outside the dripline of the tree(s).3.Do not strip topsoil or grub under story within protection area. The tree under story tobe removed shall be cut instead of pulling or grubbing. Leave the soil undisturbed.4.Prohibit earth stockpiling, material storage, vehicle parking and traffic within treeprotection area.5.Prohibit dumping of refuse, chemicals, other materials and puddling or running waterthat may injure tree growth.6.Prohibit cutting, breaking and skinning of branches and roots. All pruning of branchesand roots is to be performed by the Arborist.7.Prohibit skinning and bruising of bark.8.No changes in grade should be made within the dripline of existing trees.9.Temporary irrigation is highly recommended for all remaining trees during construction.This system should provide adequate coverage and quantity of water during all phasesof construction.10.Before the contractor leaves the site, all existing trees which have been damaged dueto construction should be repaired/replaced at the expense of the contractor.E. Excavation Around Trees:1.Where trenching is required in the vicinity of the tree, proceed as follows:a. As the trench approaches the drip line of the tree, dig by hand until the rootsencountered are two inches or larger in diameter.b. A similar trench is to be dug on the opposite of the tree and a tunnel augured underthe tree between the two trenches at a depth of 4 feet.c. If auguring is impractical, continue digging by hand. Carefully dig under any rootsover 4 inches in diameter. Do not cut main lateral roots or tap roots.2.Where excavating for new construction is required in soil containing the roots of thetree, hand excavate to minimize damage to root system. Use narrow tine spading forksand comb soil to expose roots. Relocate roots back into backfill areas whereverpossible. If large main lateral roots are encountered, expose beyond excavation limitsas required to bend and relocate without breaking.3.If root relocation is not practical, cut roots approximately 3 inches back from newconstruction.4.Any digging or cutting that tears roots or disturbs soil beyond the grading limit isunacceptable. All roots larger than one inch must be cut by the Arborist.5.Do not allow exposed roots to dry before permanent backfill is placed; providetemporary support and protect roots against damage until permanently relocated andcovered with backfill.F. Construction Pruning:1.Hire an Arborist certified by the International Society of Arboriculture. Where roots havebeen cut, Arborist shall prune the tree to compensate for root loss and prune any lowlimbs which may interfere with construction activities. Compensate in approximate directproportion to root loss. Do not use any sort of paint or dressing on wounds or pruningcuts. Root pruned and construction pruned tree shall be fertilized by the landscapecontractor by broadcasting sulfur coated area 38-0-0 at the rate of 5 1/4 lbs. Per 1,000square feet (2 lbs. N.) Over the root zones of the trees.PART 3 - EXECUTION3.1 PREPARATION - GENERALA. General Contractor shall be responsible for excavating planting areas to appropriate depthsfor placement of topsoil as specified herein.B. Lay out individual tree and shrub locations and areas for multiple plantings. Stake locationsand outline areas and secure Architect's acceptance before start of planting work. Makeminor adjustments as may be required.3.2 PREPARATION OF PLANTING SOILA. Before mixing, clean topsoil of roots, plants, sod, stones, clay lumps, and other extraneousmaterials harmful or toxic to plant growth.B. Mix specified compost and fertilizers with topsoil at rates specified. Delay mixing fertilizer ifplanting will not follow placing of planting soil in a few days.Compost: Lawn Areas: 1/4 compost, : 3/4 topsoil.Shrub Areas: 1/3 compost, 2/3 topsoil.Fertilizer: Per soil test and manufacture's recommendations.C. For shrub and lawn area, mix planting soil either prior to planting or apply on surface oftopsoil and mix thoroughly before planting.3.3 PREPARATION FOR PLANTING LAWNSA. After excavating and removing surface material to proper depth, loosen subgrade of lawnareas to a minimum depth of 4 inches. Remove stones measuring over 1-1/2 inches in anydimension. Remove sticks, roots, rubbish, and other extraneous matter. Limit preparation toareas which will be planted promptly after preparation.1.Spread topsoil mix to minimum depth of 4 inches for sodded lawns as required to meetlines, grades, and elevations shown, after light rolling, addition of amendments, andnatural settlement. Place approximately 1/2 of total amount of topsoil required. Workinto top of loosened subgrade to create a transition layer and then place remainder ofplanting soil. Add specified soil amendments as required and mix thoroughly into upper 4inches of topsoil.3.4 PREPARATION OF PLANTING BEDSA. Loosen subgrade of planting areas to a minimum depth of 6 inches using a culti-mulcher orsimilar equipment. Remove stones measuring over 1 1/2 inches in any dimension. Removestocks, stones, rubbish, and other extraneous matter.B. Spread planting soil mixture to minimum 12 inch depth required to meet lines, grades, andelevations shown, after light rolling and natural settlement. Add 1 1/2 inches of specifiedcompost over entire planting area and mix thoroughly into upper 6 inches of topsoil. Placeapproximately 1/2 of total amount of planting soil required. Work into top of loosenedsubgrade to create a transition layer, then place remainder of the planting soil.C. Apply Pre-Emergent per manufacturer's recommendation.3.5 PLANTING TREES AND SHRUBSA. Set balled and burlapped (B&B) stock on layer of compacted planting soil mixture, plumb andin center of pit or trench with top of ball at same elevation as adjacent finished landscapegrades. Remove burlap from sides of balls; retain on bottoms. When set, place additionalbackfill around base and sides of ball, and work each layer to settle backfill and eliminatevoids and air pockets. Place fertilizer tablets in excavated area per manufacture's writteninstructions. When excavation is approximately 2/3 full, water roughly before placingremainder of backfill. Repeat watering until no more is absorbed. Water again after placingfinal layer of backfill. Remove all ties from around base of trunk.B. Set container grown stock, as specified, for balled burlapped stock, except cut cans on 2sides with an approved can cutter and remove can; remove bottoms of wooden boxes afterpartial backfilling so as not to damage root balls.C. Trees planted in turf area: Remove turf 3' dia around tree trunk. Dish top of backfill to allowfor mulching.D. Mulch pits, and planted areas. Provide not less than following thickness of mulch, and workinto top of backfill and finish level with adjacent finish grades. 1. Provide 3 inches thickness of mulch.E. If season and weather conditions dictate, apply anti-desiccant, using power spray, to providean adequate film over trunks, branches, stems, twigs and foliage.F. Prune, thin out, and shape trees and shrubs in accordance with standard horticulturalpractice. Prune trees to retain required height and spread. Unless otherwise directed byArchitect, do not cut tree leaders, and remove only injured or dead branches from floweringtrees, if any. Prune shrubs to retain natural character.G. Remove and replace excessively pruned or misformed stock resulting from improper pruning.H. Guy and stake trees immediately after planting, as indicated.I. Apply approved herbicide to all shrub bed areas at manufacture specified rate. Re-apply asnecessary for elimination of weeds.3.6SODDING NEW LAWNSA.General: Install lawn sod in all areas designated on the drawings.B.Soil Preparation1.Any sod lawn areas that may have become compacted prior to sodding must be scarifiedto a depth of eight (8) inches by approved means, then finish graded as hereinbeforedescribed.C.Lay sod within 24 hours from time of stripping. Do not plant dormant sod or if ground isfrozen.D.Sod Placement1.Sod will be brought onto lawn areas by wheeled means with proper protection of sodbeds. Sod layers shall be experienced, or if inexperienced, shall be constantlysupervised by an experienced foreman. The Contractor shall insure that the baseimmediately ahead of sod layer is moist. Sod shall be laid tight with not gaps. Allowanceshall be made for shrinkage. Lay sod with long edges perpendicular to primary slope.2.Lay to form a solid mass with tightly fitted joints. Butt ends and sides of strips; do notoverlap. Stagger strips to offset joints in adjacent courses. Work on boards to avoiddamage to subgrade or sod. Tamp or roll lightly to ensure contact with subgrade. Worksifted soil into minor cracks between pieces; remove excess to avoid smothering ofadjacent grass.3.Sod shall be rolled with a two hundred (200) pound roller after installation to insureproper contact between soil and sod. Final rolling must provide a uniform surface. Afterfinal rolling, the sod lawn shall be mowed and watered. Approval of sod lawns shall bebased on uniform, healthy and vigorous growth with no dry or dead spots.4.Add fertilizer "B" at the manufacturer's recommended application rate.E.Water sod thoroughly with a fine spray immediately after planting.F.Sodded Lawn Establishment1.The Contractor shall be responsible for first mowing, subsequent mowings and fertilizingof sod lawn areas until Final Acceptance of the project.2.Mowing shall be done by an approved "reel" type mower. Mower blades shall be set attwo (2) inches high for all mowings.3.Subsequent fertilizing shall occur three to four weeks after installation. Apply fertilizer asper the Manufacturer's recommended application rate. Verify all methods of application.Contractor shall notify the Architect in writing that the fertilizer applications have occurredand on what dates.3.7 MAINTENANCEA.Begin landscape maintenance immediately after planting. Maintenance shall continue untilProject Final Acceptance.B.Maintain trees, shrubs, and other plants by pruning, cultivating, and weeding as required forhealthy growth. Restore planting saucers. Tighten and repair stake and guy supports andreset trees and shrubs to proper grades or vertical position as required. Restore or replacedamaged wrappings. Spray as required to keep trees and shrubs free of insects and disease.C.Maintain lawns by watering, fertilizing, weeding, mowing, trimming, and other operationssuch as tolling, regrading and replanting as required to establish a smooth, acceptable lawn,free of eroded or bare areas.D.Maintain lawns for no less than period stated above, or longer as required to establishacceptable lawn.3.8 CLEANUP AND PROTECTIONA.During landscape work, keep pavements clean and work area in an orderly condition.B.Protect landscape work and materials from damage due to landscape operations, operationsby other contractors and trades, and trespassers. Maintain protection during installation andmaintenance periods. Treat, repair, or replace damaged landscape work as directed.3.9 INSPECTION AND ACCEPTANCEA.When landscape work is completed, including maintenance, Architect will, upon request,make an inspection to determine acceptability.B.When inspected landscape work does not comply with requirements, replace rejected workand continue specified maintenance until reinspected by Architect and found to be acceptable.Remove rejected plants and materials promptly from project site.END OF SECTION