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HomeMy WebLinkAbout098-95 SP Trails at Avian Glen Sec 9 & 10 Erosion Control.1SECTION 02910 - SOIL EROSION CONTROL SEQUENCE The following is a list In sequence of construction activities to con,roi soil erosion : 1, Contractor shall install sediment traps and straw baie filters, as port of initial phase of any work to Insure maximum silt retention on-site. 2. Mass grade the site (sides of swoles, mounds and ponds to be seeded and mulched immediately upon completion) Temporary seeding shall be required for all swcies one disturbed areas that cannot be permanently seeded within a time period that will prevent slope erosion. For temporary seeding, the contractor shall utilize a fast grow'n5 seed of either oats, annual ryegrass, wheat or rye depending on time of year (see seeding spec.s[sec. 02930D. Disturbed areas shall be kept to a minimum at all times. 3, Contractor shall control mud accumulation on all streets surrounding project by installing stone surface of all locations where construct'on traffic leaves the site. Dist shall be kept to a minimum by utilizing sprinkling, Calcium Chloride, vegetative cover, spray on adhesives or other approved methods. Any dirt that gets on roads by construction traffic shall be removes. 4. Moirtain all filters and traps during construction to prevent any blockages from accumulated sedimert. Additional seeding and STRAW bales may be required during construction as specified by Engineers or Soil Conservation Service. Rip rap shah be placed in areas of high velocity stream flow (min. size 1/3 cu. ft. ) Payment for cdditional rip rep (not shown on plans) and seeding shall be paid for on a unit basis as approved by Owners engineer. 5. Con -,,actor shall insure that all sonitory sewers, storm sewers, subsurface drairs, are installed. Silt barriers shall be installed at all storm inlets (including street inlets), and al' drainoie swales at 200 ft. intervals. Excavation contractors shall fill top 12 of trenches with topsoil if area is to be seeded. 6. Ali proposed street areas shall be paved as soon as possible after subgrade is prepared. 7. All disturbed areas shall be seeded and mulched as specified as soon as final grade is established with erosion control seeding and/or permanent seeding as designated on plan. 8. Contractor shall maintain all temporary erosion control mecsures throughout the construction phase of this project and remove oil temporary erosion and I sediment controls only when there is a sufflc'ert growth of ground cover to prevent rurther erosion. 55 GAL -ON DRUM CUT IN HALF 2ROWS OF(4)1"x6" SLOTS PLACED AROUND DRUM SiLTED AREA AROUND BARRIER U DITCH GRATE CSTG. rl INLETI. SILT PROTECTION FOR DITCH GRATE INLETS SLOTTED BARREL SILT BARRIER NO SCALE NOTE: SET POSTS do EXCAVATE A 4"x 4' `RENCH UPS CPE FROM & ALONG THE LINE OF POSTS ATTACH FILTER FABRIC TO 5 AND EXTEND IiITO 4*x 4" 1 BACKFILL do COMPA EXCAVATED SOIL IN ^^^,RT POST SILT FENCE INSTALLATION DETAIL NO SCALE SECTION 02930 - SEEDING 1. Scope of Work To reestablish vegetative cover by seeding, either perma- nent/temporary or erosion control types, as shown on the Plan. After finish grading, All construction areas are to be seeded. 2. Sodding (Alternate): Locally growr Bluegrass blend uniform in color, type, density, and thickness. Wherever possible, Rolls of sod shall be used - not slabs of sod. 3. Permanent Seeding: March 1 to May 15 and August 10 to October '5. (Dates may vary at discretion of Landscape Architect deperding on wecther conditions.) A. Swales/Slopes: Bended mixture of seed shall be ao- plied at the rote of 110 pounds per acre. The mixture shall consist of 40# Mustang turf -type Tall Fescue, 30# Banff or Wabash Kentucky Bluegrass, 30# Fiesta Perenni- a! Ryegrass and 10# Redtop Bentgross, B. Graded Area Adjacent to Pavement: Blended mixture of seed shall be opolied at the rate of 90 wounds per acre. The mixture shall consist of 35# Mustang turf - type Tall Fescue, 30# Fiesta Perennial Ryegrass and 25# Banff or Wabash Kentucky Bluegrass. 4. Temporary Seeding: A. May 15 to Auqust 15; 40#/ogre Annual Ryegrass. B. August 15 to November 15; 2 busheis/acre Rye (groin) or wheat. (May be dormant seeded between December 10 and February 28. Add 50% to seed quantity.) C. March 1 to May 15; 3 bushels/acre Oats. 5. Erosion Control Seeding: An interim seedling to be applied to all disturbed areas as soon as final grade is estcb- lished. Mix and apply as shown on detail sneet. (Note: If this seeding Is applied ',mmedlately on finish grading, it con save some of the further seeding and lengthen the dura- tion between maintenance of silt traps and barriers and street c!eoning.) 6. Fertilizer. Commercial analysis 12/12/12 applied at a rate of 600#/acre. Apply lime to raise PH of soft to leve; needed for species being seeded. Work fertilizer and lime into the soil to a depth of 2-3 inches. (PH factor should be checked prior to seeding. Lime should not be required if topsoil is replaced.) 7. All Hydroseedln.g shall be in accordance wIth the Preceding requirements 8. Mulch: Wood cellulose fiber may be used where application is made by hydreulic mulching at the rate of ore ton per acre. Straw mulch may be used and applied uniformly in a continuous blanket at the rate of 2 tons per acre within 24 hours after seeding in accordance with Section 621 of iDHSS. 9. Sediment Control Fabric: Fabric shall be nor -woven con- struction composed o` polypropylene and shall be ultraviolet stabilized. 10. If temporary seeding and/or erosion control seeding Is established prior to permanent seeding, the mulch may be eliminated except Ir "bare" areas. 11. If grading occurs during December, January, or February, dormant seeding procedures shall be used. It Is imperative that all sediment filters and traps are in place prior to bu k earthmoving or clearing operations commencing, 12. All areas along street (approximately 25 feet behind curb) shall be seeded with permanent seed mixture as soon as grade is established. Reseeding may be required after utility companies have installed their mains. If eros'on control seeding is established, the permanent seeding con be ceioyed until lot is improved. 13. All lots/outlots where grading has occurred and no con- struction Is expected to occur withir 60 days, shall be fined with additional 3" of topsoil and seeded with the erosion control seeding process. 14. During dry weather, keep lawns watered with sprinklers or other approved methods. Reseed any areas not germiroting or do-ncged at interveis as may be reeuired according to season- al condition Water gross and execute necessary weeding until acceptable and full stand of gross has been obtained. Jpon acceptance by the Owner, the Owner shall assume me'nte- nonce of the lawn areas. 15. All dates st ohn ore nonviral and may be varied with concur- rence of the Engineer, Landscape Architect, Local Sol' Conservationist or Owner. 4 SECTION 02912 - EROSION CONTROL BLANKET Erosion control blanket shall be a machine -produced mat of 100% ogricu turol straw. The blanket shall be of consistent thickness with the straw evenly distributed over the entire area of the mat. The blanket snail be covered on the top side with polypropylene netting having an approximate 5/8" x 5/8" mesh, and on the bottom with a polypropylene netting with an approximate 1/4' x 1/4" mesh. The blanket shall be sewn together with cotton thread. Straw erosion control blanket (or low velocity channel lining) shall be S75 as manufactured by North American Green, or equiva- lent. Erosion control blanket or channel lining shall nave the following properties. A. Material Content: Straw '00% (0.5 ib/sq. yd.) (0.27 kg/m2) Netting One side lightweight photodegradable (1 Ib/1000 sq. ft, approx. wt,) One side neavyweight photoderodable (3 Ib/1000 sq, ft. approx. wt.� Thread Cotton B. Physical Specifications (Roll): Width 6.5 feet (2m) Length 83.5 feet (25.4m) Weight 30 Ill - 10`0 (13.6 kg) .Area 60 sq. yds. (50m2) Site Preparation Smooth grade and comoact all areas to be covered with mat. Remove all rocks, dirt clods, g -ass clumps, trash and other obstructions that will lift mat from ground surface. Anchor Trenches The mat must be anchored at the upstream and downstream ends of the protected a -ea and intermittently in between. Excavate erd trenches to a m'nimum of 12" deep and 6" wide before placing mat. Dig 'ntermittent check slots 6" deep by 6" wide transverse to mat at approximately 25' intervals. Seeding Seed and fertilizer shall be spread uniformly before mot in- stailation. Seed type, fertilizer type, and rate of applice- tior. shall comp:y with seeding specifications. Mat Placement Unroll mat flat side against the ground. Unroll mat in direction parallel with direction of water flow. Mat should lay flat. DO NOT PULL MAT TAUT over ground. Puiling mat tout may cause mat to bridge depressions in the surface and allow erosion underneath. Beg+nning at up or cownstream end, bury transverse terminal end of mot to secure and prevent erosion flow underneath. Fold and secure mat snugly into all transverse check slots. Backfill one compact trenches and check slots after staking the mat in bottom of trench _. see "Ground Fastening", below. Bury final terminal end as prescribed above, Overlap roll ends by 3' (min.) with upslope mat on top to prevent uplift of mat end by water flow. Overlap adjacent edges of mat by 3" (min.) and stake .. see Ground Fastening*, below. Ground Fastening Metal pins or wood stakes are recommended for anchoring mat to the grourd surfcce. Metal pins should be 3/16" diameter steel with 1-1/2" diameter steel washer secured at head of pin. Wood stakes should be 1" x 3" nominal stock cut In a triangular shcpe. Stakes should be 9" to 18" long depending on soil density. Longer anchors are required for loose soils. Note that ground fasteners different from those mentioned here may function adequately. Care must be taken to assure that fasteners hold mat securely at the surfcce and hove sufficient ground penetration to resist pullout. Stake mat to grounc on 3 to 5 foot centers. Add extra stokes at depressions in ground surface where mat bridges over to. assure ground conformity. Drive wood stakes to within 3" of ground surface. Do not drive flush to surface. Steel or plastic pins should be driven flush to surface. Ir all transverse terminal trenches and check slots, stake each mot at its Center and at overlapped edges before backfilling and compacting. Stake overlaps longitudinally at 3' intervals. EROSION CONTROL MEASURES REQUIRED PER RULE # 5 AND * INDIANA HANDBOOK FOR EROSION CONTROL IN DEVELOPING AREAS (* PRACTICE NUMBER REFERENCES ARE TAKEN FROM DETAILS IN THIS BOOK ) SILT FENCE: A SILT FENCE IS PLANNED TO GO ALONG THE NORTH dt NORTHEAST TOP OF BANK OF MITCHNER DITCH TO PREVENT SEDIMENT FROM ENTERING INTO STREAM. THE FENCE SHALL BE AS PER EROSION CONTROL PRACTICE NUMBER 3.74, ADDITIONAL SILT FENCE MAY BE USED IF SPEC'FiED AREAS SHOW A NEED DURING CONSTRUCTION AS DETERMINED BY THE ENGINEER OR EROSION CONTROL CONSULTANT. EROSION CONTROL BLANKET: RECOMMENDED EROSION CONTROL BLANKETS SUCH AS NORTH AMERICAN GREEN S150 BE INSTALLED AS A TEMPORARY EROSION MEASURE iN THE BOTTOM OF ANY SWALE 1MTH .A CONCENTRATED SURFACE WATER FLOW ( REFER TO EROSION CONTROL PRACTICE NUMBER 3.17 ) STRAW BALE DROP INLET PROTECTION: RECOMMENDED USING STRAW BALE DROP INLET PROTECTION AS PER EROSION CONTROL PRACTICE NUMBER 3.54 AS A TEMPORARY EROSION CONTRO_ MEASURE UNTiL BLANKETS ARE INSTALLED. OTHER DROP INLET PROTECTION PRACTICES MAY BECOME NECESSARY UPON RECOMMENDATION OF THE ENGINEER OR EROSION CONTROL CONSULTANT iF A SPECIFIC NEED ARISES DURING; CONSTRUCTION. TOPSOIL SALVAGE AND UTILIZATION: AS PER EROSION CONTROL PRACTICE NUMBER 3.02. REMOVAL OF TOPSOIL TO A DEPTH OF SIX INCHES ( OR MORE IF REQUIRED BY -NE ENGINEER ) FROM ALL AREAS TO BE EXCAVATED OR WILLED. TOPSOIL SHOULD BE STORED AT A LOCATION WHERE IT WiLL NOT INTERFERE WiTH CONSTRUCTION OPERATION. TEM°ORARY SEEDING: RECOMMENDED TEMPORARY SEEDING AS PER EROSION CONTROL PRACTICE NUMBER 3.11 IF DISTURBED GROUND iS TO BE LEST BARE FOR TWO MONTHS OR MORE. +N ADDITION, iT IS RECOMMENDED RED CLOVER BE ADDED TO THE SEEDING MIXTURE AT A RATE OF 10 POUNDS PER ACRE. DORMANT AND FROST SEEDING: AS PER PRACTICE NJMBER 3.13 TO BE APPLIED IF NECESSARY, SURFACE ROUGHING: AS PER EROSION CONTROL PRACTICE NUMBER 3.03 SUGGEST USiNG A BULLDOZER TO TRACK WITH CLEATS PERPENDICULAR TO THE SLOPES ON DISTURBED GROUND OF SIX PERCENT OR GREATER AND AROUND PONDS 2 & 3 AS A TEMPORARY MEASURE UNTIL READY FOR MULCH SEEDING OR BLANKETS, TEMPORARY GRAVEL CONSTRUCTION ENTRANCE/ EXIT PAC: RECOMMENDED AS PER EROSION CONTROL PRACTICE NUMBER 3.01 ® N.E. PROPERTY ENTRANCE. TREE CONSERVATION/ PROTECTION: AS PER EROSION CONTROL PRACTICE NUMBER 3.83, THE CONTRACTOR SHALL, AT THE DIRECTION OF THE DEVELOPER, ENDEAVOR TO SAVE AN PROTECT TREES VALUE AND WORTH WHICH DO NOT !MPAIR CONSTRUCTION OF IMPROVEMENTS AS DESIGNED. IN THE EVENT CUT OR FiLL EXCEEDS 0.5 FOOT OVER THE ROOT AREA, THE DEVELOPER SHALL BE CONSULTED WITH RESPECT OF PROTECTIVE MEASURES TO BE TAKEN, F ANY, TO PRESERVE SUCH TREES. MAINTENANCE SCHEDULE: MAINTENANCE OF ALL EROSION CONTROL PRACTICES SHOULD BE DONE AS NEEDED ON A WEEKLY BASIS AND AFTER ALL LARGE STORMS. OUR CONSTRUCTION SUPERVISOR WILL BE RESPONSIBLE FOR SEEiNC THAT ALL PRACTICES ARE INSTALLED AND MAINTAINED ACCORDING TO 7HE DESIGN CRITERIA, MAINTENANCE FOR EACH EROSION CONTROL PRACTICE SHOULD BE CONDUCTED PER MAINTENANCE SCHEDULE SHOWN ON EACH EROSION CONTROL PRACTICE JOB SHEET. CONSTRUCTION SEQUENCE SCHEDULE SPRING: LOCATE AREAS OF TREE PROTECTION. INSTALL GRAVEL CONSTRUCTION ENTRANCE, INSTALL TEMPORARY SILT FENCE, STRIP AND STOCKPILE TOPSOIL, EXCAVATE BUILDING AREAS AND OTHER EARTHWORK ( LAKES, ROADS, SWALES, SEWERS, ECT. ) SPRING/ SUMMER ; PROJECTED SEASON TO START): INSTALL STAWBALE INLET PROTECTION. INSTALL RCCK CHUTE OUTLET PROTECTION. INSTALL TEMPORARY ERCSION CONTROL BLANKETS AS NEEDED. TRACK IN RIDGES WITH BULLDOZER CLEATS ON ALL SLOPES GREATER THAN SIX PERCENT AND AROUND SIDE SLOPES OF LAKES. SUMMER/ FALL: APPY SOD iN ALL AREAS THAT ARE FINISHED GRADED, APPLY TEMPORARY SEEDING IN AREAS WHERE EARTHWORK CONSTRUCTION IS HALTED AND AREA WILL BE BARE AND EXPOSED FOR MORE THAN TWO MONTHS. MAINTAIN EROSION CONTROL PRACTICES AS PER ERCSION CONTROL MAINTENANCE SCHEDULE AS NOTED ABOVE. REMOVE TEMPORARY EROSION CONTROL MEASURES IN STABILIZED AREAS THAT HAVE BEEN SODDED. WINTER/ SPRING. APPLY DORMANT SEEDING ON ANY AREAS THAT SH3YV A NEED FOR IT, CONTINUE MAINTENANCE OF EXISTING EROSION CONTROL PRACTICES IN PLACE. SPRING/ SUMMER/ FAL_ ( FOLLOWING YEAR ): STABILIZE ALL OPEN GROUND AND REMOVE TEMPORARY EROSION CONTROL PRACTICES. IMPLEMENT FINAL LANDSCAPE PLAN. DON'T DIC BLIND 'HMEY IIOIEY' SQ 1-800-382-554.4 CALL TOLL FREE 1-800-428-5200 FOR CALLS OUTSIDE OF INDIANA CAUTION: LOCATION OF ALL EXISTING UNDERGROUND UTILITIES SHOWN ON THIS PLAN ARE BASED UPON ABOVE GROUND EVIDENCE. ( including, but not Iknited to, manholes, inlets, vatvea do marks rude upon the ground by others.) AND ARE SPECULATIVE IN NATURE. THERE MAY ALSO BE OTHER EXISTING UNDERGROUND U71UTIES FOR WHICH THERE IS NO ABOVE GROUND EVIDENCE OR FOR WHICH NO ABOVE GROUND EVIDENCE WAS OBSERVED. THE EXACT LOCATIONS OF SAID EXISTING UNDERGROUND UTILITIES SHOULD BE VERIFIED BY THE CONTRACTOR PRIOR TO ANY AND ALL CONSTRJC'TON. Z O_ L Li ll I G G rno to N �rn I L) � I rn I, � I U M ouLx O � � � IH Q U _ V LAJ � 0 J LLJ w Z o Z w Q c!; ua C) I-, w OJ w o a G� c Z O V Z O O U Lv m D 0 Lv fk n < SHEET : C206