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Sly <br />iiiiiiiiiiiiiiiim <br />Doc Date:1211112001 <br />• SECTION 4.0 Regraded Spoil Laboratory Results <br />Trappers approved Mining and Reclamation Permit (C-81-010), specifies annual sampling of recontoured <br />spoils in the Ashmore and Flintlock pd areas. Section 2.7.2 of permit C-81-010 addresses the specifics of <br />these requirements. <br />Map 4 illustrates the Ashmore pit area recontoured in 1997 and the spoils that were mapped and sam- <br />pled. <br />4.1 Methods <br />The 1997 mapping units were determined by the visual and textural difference of the surface spoils. <br />Each sample of spoil was a composite from various areas within each mapping unit, from at least aone- <br />foot depth of material. Six composite samples were taken in 1997. Map 4 presents these mapping units <br />along with the sample number, texture and year sampled. <br />4.2 Results <br />Spoil samples were analyzed for the parameters outlined in Table 2.7.2a of Trapper's mining and recla- <br />mation permit. The 1997 laboratory analysis was performed by the ACZ Laboratory. The lab resufls are <br />presented on Table 41. Table 42 shows the suitability ratings of the 1997 samples as compared to the <br />suitability ranges presented in pertnR Table 2.7-2a. Further comparison of the 1997 samples to historical <br />• topsoil and spoil samples is presented in Table 4-3. <br />4.3 Discussion and Recommendations <br />The purpose for annual spoil sampling and analysis is to demonstrate that the recontoured surface spoil <br />layer has acceptable physical and chemical progenies to promote plant growth and successful reGama- <br />tion. The 1997 data again shows no problems and continues to indicate that Trapper is accomplishing <br />this goal. WRh replacement of suitable topsoil, all recontoured spoils should provide an excellent medium <br />for plant growth for any desirable postmine land use. <br />BDN 1198 <br />[DMGl97REPT4] <br />• <br />