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III IIIIIIIIIIIII III <br />Doc Date:12/11I2001 <br />SECTION 4.0 Regraded Spoil l.attaatory Results <br />Trappers approved Mining and ReGamation Permit (081-010) specifies annual sampling of recontoured <br />spoils in the Ashmore and Flintlock pit areas. Section 2.7.2 of pernit G81-010 addresses the specifics of <br />these requirements. <br />Map 3 (Sheet 2) illustrates the Ashmore pit area recontoured in 1998 and outlines the spoil areas that <br />were mapped and sampled. <br />4.1 Methods <br />The 1998 mapping units were determined by the visual and textural difference o(lhe 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. Ten composite samples were taken in 1998. Map 3 (Sheet 2) preserHs the spoil <br />sample local'rons. <br />4.2 Results <br />Spoil samples were analyzed for the parameters outlined in Table 2.7.2a of Trappers mining and recla- <br />mation pertnR. The ACZ Laboratory performed the 1998 laboratory anaysis. The lab resuRs are <br />presented on Table 41. Table 42 shows the suitability ratings of the 1998 samples as compared to the <br />suitability ranges presented in permit Table 2.7-2a. Further comparison of the 1998 samples to Historical <br />topsoil and spoil samples is presented in Table 43. <br />4.3 Discussion and Recommendations <br />The purpose for annual spoil samplirg and analysis LS to demonstrate that the recontoured surface spoil <br />layer has acceptable physical and chemical properties to promote plats growth and successful reclama- <br />tan. The 1998 data again shows no problems and continues to indicate that Trapper is accomplishing <br />this goal. With replacemerrt of suitable topsoil, all recordoured spoils should provide an excellent medium <br />for plant growth for any desirable postmine land use. <br />BDN 3198 <br />[DMGI9BREPT4] <br />• <br />