Laserfiche WebLink
USDA-SCS <br /> . SCS•69 (9.62) COOPERATOR C• F. Corp. <br /> RECORD OF COOPERATOR'S DECISIONS ASSISTED BY Glenn 1 . 1-cCarty <br /> AND PROGRESS IN APPLICATION GATE February 24, 1976 <br /> PLANNED APPLIED <br /> FIELD MONTH <br /> NUMBER AMOUNT YEAR AMOUNT <br /> AND LAND USE AND TREATMENT <br /> YEAR <br /> I , <br /> 20-25 ac. 1980 Critical Area Treatment: The spoil from the mine will be placed in <br /> to the draina, eway, over a pipe to carry the water. The topsoil of the <br /> 2000 drainage, whici is "Table Mountain Loam" and a deep soil that should <br /> provide ,cost of the cover, but all other top soil that will be buried <br /> in the spoil should also be removed, suitably stockpiled and protected <br /> from, erosion. Such as diversions or small dams. The topsoil should <br /> not be re:::oved until absolutely necessary and only as the spoil area <br /> progresses. The spoil will be level between the drainage sides, but <br /> any needed slopes will be 3:1 or flatter- After a desired a.nount of <br /> spoil has been placed to conclude a section, the topsoil should be <br /> placed over the spoil with a minimum cover of six (6) inches. If <br /> there isn't enough topsoil for a cover of six (6) inches the topsoil <br /> ! should be incorporated into the spoil by disking. No weathered coal, <br /> ! or coal shale will be left on the surface as they are extremely acid <br /> and will prevent germination of 7rass seed. <br /> 20-25 ac. Seeding: As a section of spoil is covered by topsoil it will be seeded <br /> to grass. Eighteen (18) pounds of pure live seed per acre of Pubescent <br /> wheatgrass, Luna variety, will be drilled between April 15th to June lst. <br /> I <br /> 20-25 ac. Deferred GrazinT: The seeded area will be protected from ;razing by <br /> domestic animals. The most desirable protection of the entire drainage <br /> would be to exclude the gazing of domestic animals. <br /> Structures for drainage under spoil: Hydrology of the drainage area <br /> was computed and found to be 950 c.f.s. for a fifty years storm and <br /> 1200 c.f.s. for a hundred years storm. A detailed engineering survey <br /> would need to be made for the correct size of pipe and inlet and outlet <br /> structures, but for an examDle only, with at least one (1) ft. fall in <br /> 120 ft., and a 9 ft. head of water, a 10 ft. diameter CMP would carry <br /> 1200 c.f.s. If a pipe to handle a hundred years storm is not feasible <br /> then dams should be constructed in the upper drainage area to slow the <br /> runoff and release it over a 72 hour period. <br />