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• whenever suitable soil cannot be salvaged exclusively from any map unit because of equipment limitations or operator safety concerns. 2003 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. Topsoil replacement depths will be sampled during 2004 field season. Samples were taken on a random line across the topsoil replacement area. The average topsoil replacement depth for the 2003 azea is 1.4ft. 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 soil volume information previously submitted with the 1999 Annual Reclamation Report (SCC, 2000) and confirm the mean soil replacement thickness for the fast five- yearpermit term. Soil Salvaee and Stora¢e The disturbance area from which soil was salvaged and the soil stockpile sites as of December 31, 2003 are shown on the Yoast Mine 2003 Reclamation Map. During 2003, all soil was imported to stockpiles M, and O Topsoil stockpiles D,E, F, and P were respread on reclaimed land. The actual volume of soil salvaged and stockpiled from 1995 through December 3l, 2003 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, 2003 are listed in Table 03.1 As of December 3l, 2003, 706 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 azea that requires soil replacement as of December 31, 2003 with the soil reserve in stockpiles. The disturbance area for Yoast Mine, shown on the Yoast Mine 2003 Reclamation Map totaled 584.2 acres on December 31, 2003. No soil . was salvaged or needs to be replaced beneath the soil stockpile sites. Also, Haul Road A and Haul Road B are permanent postmine facilities (9.9 acres), soil will only be replaced on a portion of those roads effectively narrowing them to 20 feet wide. Topsoil has been replaced on 293.4 acres of disturbed area through 3