2018-06-29_PERMIT FILE - C1981025

Home Browse Search

• r~ L~ of the analyses are shown in Table 3.8.2-2, Disturbances from construction of the loadout have not involved area- wide excavations or total destruction of the soil profile as would occur at a strip mine. Except for specific areas under sediment ponds or conveyor and tipple foundation footings, loadout construction has involved little significant excavation of subsoils. Recommended stripping depths (and attendant volume estimates) were based on the consideration of a "functional" topsoil layer, which does not strictly coincide with taxonomically described horizons. Soils developed under semi-arid conditions often tend to be weakly developed and have a thin A horizon; a reasonable depth for topsoil stripping should include some B horizon material. A description of topsoil handling con- siderations and calculations of available volumes are presented in Section 4.1 of the permit application. Stockpile locations are shown on Drawing D-2-2; sampling locations and soils boundaries are shown on the Soils Map. Nearly all of the soils disturbed by the loadout construction are agricultural soils and, as such, are an excellent resource for vegeta- tive reclamation. The results of the laboratory analyses do not indi- cate adverse soil conditions. Although the topsoil is of good quality, these soils are thin and are not available in depths exceeding 12 inches. On the average, the best stripping depth for the level soils is about 8 inches. The Grobutte soil, unit X57, is the only unit which is not a good source of topsoil. It is probably not practical to stockpile this soil as it is very stony and thin and occurs on a steep slope, A small portion of this soil will be disturbed for construction of the truck dump site. The Armells series is marginally suited for topsoil salvaging, An annotated soils legend follows, describing the soils disturbed by • 3-112