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HomeMy WebLinkAbout064-94 SP Sutton Place Sec.2 Erosion Control DetailsSilt Fence Detail SEEDING SPECIFICATIONS 1. Swales and grassed waterways: permanent seeding shall take place between March 1 and May 15 or from August 10 to October 15 with the following per acre application rates. - 25 lbs. Kentucky 31 Fescue 15 lbs. Kentucky Blue Grass 1000 lbs. Fertilizer 3000 lbs. straw mulch. 2. If grades are established between October 15 and December 30, either rye (grain) or wheat may be used at the rate of 2 bushels per acre. Oats may be used for early spring planting at the rate of 3 bushels per acres. All grains shall be cut at the time of permanent seeding or prior to to seed maturing. 3. If grades are established between May 15 and August 10, a temporary seeding consisting of 40 lbs. of annual ryegrass shall be planted per ac. 4. If temporary seeding is established prior to permanent seeding, the mulch may be eliminated except in "bare" areas. 5. If grading occurs during December, January or February, no seeding shall take place untill spring planting. However it is imperative that all sediment filters and traps are in place prior to bulk earthmoving or clearing. SOIL EROSION CONTROL SUMMARY AND SEQUANCE: 1. Contractor shall install sediment traps and straw bale filters as shown prior to the comencement of bulk earthmoving. 2. Mass grade the site (sides of swales, mounds and ponds to be sodded or seeded and mulched immediately upon completion). Temporary seeding shall be recommended for all swales and disturbed areas that cannont be final seeded within a time period that will prevent soil erosion. For temporary seeding the contractor shall utilize a fast growing seed of either oats, annual ryegrass, wheat or rye depending upon the time of year. Disturbed area should be kept to a minimum at all times. 3. Contractor shall control mud accumulation on all streets surrounding the project by installing stone surface at all locations where construction traffic leaves the site. Dust shall be kept to a minimum by utilizing sprinkling, calcium chloride, vegetative cover, spray on additive or other approved methods. 4. Maintain all filters and traps during construction to prevent any blockages from accumulated sediment. Additional seeding and straw may be required during construction as specified by the engineer or the Soil Conservation Service. 5. Rip rap shall be placed in areas of high velocity stream flow (minimum size shall be 1/3 cu. ft.) 6. Contractor shall install all storm sewer inlet filters at the time the storm sewer is installed. 7. All proposed street areas to be paved as soon as possible after subgrade is prepared. - STAKE LATH SILT FENCE BACKFILL and COMPACT �I�JIr III=—�If=--III 11f=—III IIif DOWNHILL �2 1 UPHILL SIDE SIDE i ,o i 1 1/2' X 3' X A x g x ! x l 1 staple per sq. ya 1 112 staples per sq. yd. Wheat or Rye Oats Annual Rygrass Non—Irrigated ° Irrigated Dormant Seeding �tnnlA i NOTES: 1. Dig a 6" to 8" deep trench along the proposed fence line. 2. Roll out Silt Fence on the uphill side of the trench. Unroll Silt Fence with fabric side down and stake side up. (Nutec Silt Fence unrolls from left to right. 3. Drive stakes on downhill side of trence. Drape loose end of fabric into trench. 4. Backfill and compact soil from uphill side of slope. IMPORTANT: STAKES MUST BE ON DOWNSHILL SIDE OF SLOPE! 2 staples per sq. yd. Patten Detail Temporary Seeding Dates �LXL x X x x X x x XDx 3 1/2 staples per sq. yd. Jan Feb 1, Mar�pri M• • -•NovDec Permanent Seeding Dates Irrigation needed during this period. To control erosion at time other than in the shaded areas use mulch. Late summer seeding dates may extended 5 days if mulch is applied. 9 Increase seeding application by 50 %. P LAN ELEVATI U IN BOTTOM of _ DRAINAGE WAY � I I I Straw Bale Channel Barrier COMPACTED BACKFILL - WOOD OR STEEL STAKE STRAW BALE BINDING WIRE !�— OR TWINE SECTION A—A SUMER o -�7tr =3� N0. 11036 STATE OF 01 A N P f \� ���'•