Laserfiche WebLink
<br />~~ <br />~. <br />the outslope of the collection ditch is controlled by <br />naturally occurring vegetation. <br />F. Outslopes of SP-2 and Discharae Structures from SP-2: <br />Outfall 008. <br />Sediment Pond 2 (SP-2) has not been constructed. Construction <br />of SP-2 will occur during construction of the waste disposal <br />area. Once SP-2 is constructed, erosion from the outslopes of <br />the pond will be controlled by seeding with the approved seed <br />mix. Drainage from the waste disposal area will drain into <br />SP-2. <br />Diversion ditches (DD-5 and DD-6) are planned to divert <br />stormwater from the surrounding hillsides to the Harvey Gap <br />Drainage. Drainage from the outslopes of the diversion <br />ditches will be diverted into SP-2. These outslopes will be <br />seeded with the approved seed mix. <br />At the base of the waste disposal area, collection ditches <br />will be constructed around the area to direct drainage from <br />the disposal area to SP-2. Erasion control of the outslopes <br />of the collection ditches will be provided by seeding the <br />areas with the approved seed mix. <br />The principle spillway from SP-2 will be a 2" non-clogging <br />device to carry flow out of the pond. The SP-2 principle <br />spillway will join the SP-2 emergency spillway. <br />Once SP-2 is constructed, the emergency spillway will be lined <br />with rip-rap 3" to 6" in diameter and seeded with the approved <br />seed mix. Plans for SP-2 spillway show a width of about 12.5 <br />feet in width and about 300 feet in length. The SP-2 <br />emergency spillway will flow into the Harvey Gap Drainage. <br />The discharge and spillway structures will be seeded with the <br />approved seed mix to control erosion. <br />G. Outslope from Soil Storage: Outfall 009. <br />Once construction begins on the waste disposal site and SP-2, <br />all soils materials will be stored northeast of SP-2. The <br />soil materials storage will slope so that drainage will be <br />directed into SP-2. Drainage from the outslope of the soils <br />material storage will flow into Harvey Gap Drainage. The <br />soils material storage will be seeded to control sediment <br />erosion.. <br />7 <br />