2013-10-29_REPORT - C1981008 - Laserfiche WebLink

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Requirement Rules Permit (PR 6) Specific Requirement Information Provided /Source /Details on Requirement Division comments 24 Annual Reporting, Permit page Topsoil Thickness - Soil lift Exhibit 2011 -6 depicts Evaluated Attachment 2011 -A sample results in comparison to threshholds in Table 2.05.4(2)(d) -lB and in Section 2.05.4(2)(d) 2011 -03 MR79 for samples (TS- 2.05.4(2)(e)-74; Permit (PR 6 MR thickness data and soil and topoil topsoil thickness and sample locations, Attachment 2011 -A consists 104, 105, 106, 107 and 108). THE ACCEPTED SOIL TEXTURES IN TABLE 1B DO NOT APPEAR TO INCLUDE SCL (SANDY CLAY LOAM), WHICH IS THE TEXTURE 79) section 2.05.4(2)(d) - Table sampling reports and data of required soil samples taken by WFC personal. INDICATED IN THE SAMPLE RESUTLS FOR ALL SAMPLES. DOES "SC" IN TABLE 1B ENCOMPASS "SCL "? PLEASE VERIFY. Evaluated Exhibit 2011 -6, topsoil, 5 sample 2.05.4(2)(d) -lB Spoil and Soil pursuant to Section 2.05.4(2)(d) points were sampled in the 6.8 acre topsoiled area in Zone 7 (meeting the requirement of 1 sample per 5 acres in this area, correct grid dimensions are shown Suitability Criteria (Other Areas) and Tables 2.05.4(2)d) -lA and 1 B ; on the map). Evaluated exhibit 2011 -6 soil samples in comparison to thresholds in Table 2.05.4(2)(d) -16 and in Section 2.05.4(2)(d) 2011 -03 MR79. TOPSOIL Topsoil testing and reporting per DEPTH REQUIREMENT FOR ZONE 7 IS 12 -20 ". TABLE 1B INDICATES THAT THE SAMPLE THICKNESS SHOULD BE A MAX OF 2'. SAMPLE TS -105 HAD A DEPTH OF Section 2.05.4(2)(d) 24 ", EXCEEDING THE REQUIRED RANGE OF 12 -20 INCHES. IS THIS EXCESS ACCEPTABLE? ASSUMING COLUMNS WERE INTERPRETED CORRECTLY BASED ON CURRENT BLACKED OUT VERSION, all samples tested within threshholds, NOT INCLUDING TEXTURE, SEE ABOVE NOTE. 25 Permit section 2.05.4(2)(d) (Top) Soil Redistribution The Topsoil Redistribution section modified with MR -79 in March Evaluated Exhibit 2011 -6 showing the different soil zones and required soil depths for each zone and compared to Permit Map 2.05.4 -4 (Postmining Topsoil 2011. Replacement) PR 6 MR 79 (3/2011). MAP 2.05.4 -4 INDICATES THAT LIFT A IN ZONE 4 SHOULD BE 25" AVERAGE THICKNESS - THIS DISAGREES WITH EXHIBIT 2011 -6 WHICH INDICATES THAT LIFT A IN ZONE 4 IS 24" AVERAGE THICKNESS. THE COMBINED THICKNESS ALSO DISAGREES (58" VS. 57 "). MAP 2.05.4 -4 INDICATES THAT BENCH 1 SUBSOIL IN ZONE 8 THICKNESS SHOULD BE 10 -24" - THIS DISAGREES WITH EXHIBIT 2011 -6 WHICH INDICATES THAT BENCH 1 SUBSOIL IN ZONE 8 SHOULD BE 18"+ THICKNESS. 26 Permit section 2.05.4(2)(d) Topsoil Salvage and Storage Exhibit 2011 -10 gives details on locations types volumes and Evaluated calculations in Exhibit 2011 -10 in comparison to calculations provided in the 2011 ARR. PLEASE INCLUDE A BULLET FOR MIXED -AREA 4 IN THE ARR (Stockpiling) - Western Fuels stockpile identification. An Annual Soil Balance summary was REPORT SHOWING THAT THE BALANCE IS NOW ZERO. Colorado will provide topsoil included in the ARR, Exhibit 2011 -10, topsoil balance, shows topsoil salvage depths in the Annual balance calculations. Report. Required to submit an Annual Topsoil Balance /Spoil Quality Report. 27 Permit section 2.05.4(2)(d) Cover Crop ARR includes information on temporary seedings. Exhibit 2011 -4 only shows long -term seeding. Temporary seedings (of cover crops) are detailed only in the ARR. Seed mixes appear to have been used appropriately. Seeding rates provided in Attachment 2011 -B of ARR. No problems noted. 2011 ARR Review Page 4