REP05349 - Laserfiche WebLink

Home Browse Search

2001 Soil Replacement Thickness SCC is required by Permit C-94-082 and Section 4.06.4(2}(b) of Colorado's Regulations for Coal Mining to document and record the soil replacement thickness for each reclamation block using a minimum sampling intensity of one hole per five acres. The soil replacement thickness information is used to adjust soil salvage depths, if necessary, and for bond release purposes. Soil replacement thickness was sampled in November, and TS replacement averaged 23.5 inches of 4 samples. Soil Balance SCC is submitting the soil balance with the Annual Reclamation Report as required by Permit C-94-082, Tab 21, Pages 5, 25, and 26, and as recommended by Section 32.04.13(2) of Colorado's Regulations for Coal Mining. The soil balance is completed to ensure soil is salvaged, stockpiled, and replaced as recommended and approved in the permit, and, if necessary, to readjust the soil salvage and redistribution thickness. The soil information is also used to update the soi( volume information previously submitted with the 1999 Annual Reclamation Report (SCC, 2001) and confirm the mean soil replacement thickness for the first five-year permit term. • Soil Salvaee and Storaee The disturbance area from which soil was salvaged and the soil stockpile sites as of December 31, 2001 are shown on the enclosed map. During 2001, all soil was imported to stockpiles O, P and R, in addition to 28.6 acres of directed hauled topsoil. The actual volume of soil salvaged and stockpiled from 1995 through December 31, 2001 was determined by field survey of existing soil storage stockpiles. The base and existing elevations for each stockpile were completed by the Seneca engineering staff. The stockpile volumes as of December 31, 2001 are listed in Table 01.1. As of December 31, 2001, 799.1 acre-feet of soil were stockpiled in the mining area. Soil Balance and Replacement The soil balance is calculated for Yoast Mine by comparing the disturbance area that requires soil replacement as of December 31, 2001 with the soil reserve in stockpiles. The disturbance area for Yoast Mine totaled 587.0 acres on December 31, 2001. No soil was salvaged or needs to be replaced beneath the soi! stockpile sites. Also, haul Road A and Haul Road 6 are permanent posimirte facilities (9.9 acres), soil will only be replaced on a portion of those roads effectively nazrowing them to 20 feet wide. Topsoil has been replaced on 90 acres of disturbed area through December 31, 2001. Therefore, the total disturbance area requiring topsoil as of December 31, 2001 was 380 acres at the mine site. 3