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• <br />u <br />Doc Date:1 211 112 0 0 1 IIIIIIIIIIII"~~Ill REl..C1~G® <br />sas <br />MAR 1 G 2001 <br />S~F <br />Division of Minerals and Geology <br />SECTION 4.0 Regraded Spoil Laboratory Results <br />Trapper's approved Mining and Reclamation Permit (C-81-010) specifies annual sampling of recontoured <br />spoils in the Ashmore and Flintlock pit areas. Section 2.7.2 of permit C-81-010 addresses the specifics of <br />these requirements. <br />Map 3 (Sheets 2 and 3j illustrates the Ashmore Pit and Flintlock Pit areas recontoured in 2000 and <br />outlines the spoil areas that were mapped and sampled. <br />4.1 Methods <br />The 2000 mapping units were determined by the visual and textural difference of the surface spoils. Each <br />sample of spoil was a composite from various areas within each mapping unit, from at least cone-foot <br />depth of material. Twenty-five composite samples were taken in 2000. Map 3 (Sheets 2 and 3) presents <br />the spoil sample locations. <br />4.2 Results <br />Spoil samples were analyzed for the parameters outlined in Table 2.7.2a of Trappers mining and <br />reclamation permit. The ACZ Laboratory performed the 2000 laboratory analysis. The lab results are <br />presented in Table 4-1. Table 4-2 shows the suitability ratings of the 2000 samples as compared to the <br />suitability ranges presented in permit Table 2.7-2a. Further comparison of the 2000 samples to historical <br />topsoil and spoil samples is presented in Table 4-3. <br />4.3 Discussion and Recommendations <br />The purpose of annual spoil sampling and analysis is to demonstrate that the recontoured surface spoil <br />layer has acceptable physical and chemical properties to promote plant growth and successful <br />reclamation. The 2000 data again show no problems and continues to indicate that Trapper is <br />accomplishing this goal. tAhth replacement of suitable topsoil, ali recontoured spoils should provide an <br />excellent medium for plant growth for any desirable postmine land use. <br />KCK 3/01 <br />[DMG100SSteM40J <br /> <br />