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7wttleApplegate,lnc. <br />Consultants for Lantl, Mineral and Water Development <br />May 21, 1998 <br />RECEIVED <br />Ms. Christina Kaminl:ar <br />Division of Minerals & Geology MAY 2 2 lggg <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 uivlsion Of Minerals ~ Ge0logy <br />RE: Adequacy Response for M-98-034; Parshall Pit <br />Dear Christina: <br />Even though your letter is dated May I5, 1998, we did not receive it at our office until May 20, 1998. <br />With the decision date being May 21, it seems advisable to extend the decision date to allow you time to <br />review this information and prepare the paperwork for approval. Therefore, we request a continuance of <br />the decision date to May 28, 1998. <br />With this letter, we wish to answer the issues you brought up in your technical adequacy review. We will <br />provide our responses in the same order given in your letter. <br />The operator will commit to seeding topsoil stockpiles which remain in place longer than one <br />growing season. Westem Wheatgrass will be broadcast on the stockpiles at a rate of 30 pounds <br />per acre. Significant bare spots on the stockpiles will be re-seeded during the next growing <br />season. <br />2. The operator commits that the steepest grade on reclaimed slopes will be 3H:1 V. <br />3. The expected maximum depth of the excavation will be 8,040 feet, which will occur at the <br />southern end of Phase 3. We estimate that the depth of the groundwater is 7,960 feet elevation. <br />A natural spring occurs a short distance away at this elevation. The operator commits to notify <br />the DMG and the Office of the Stale Engineer immediately if an accidental exposure of <br />groundwater occurs at the site. In addition, the operator will backfill such groundwater exposure <br />with two feet of native fill until a consultation is held with the Office of the State Engineer. <br />4. The following seed mix will be applied in the reclamation areas: <br />Species % of Mix PLS Per Acre <br />Smooth Brome Manchar 10 3 <br />Westem Wheatgrass 40 12 <br />Slender Wheatgrass 15 4 <br />Red Fescue 10 3 <br />Blue Grama 10 3 <br />Needle-and-Thread IS 5 <br />Totol 100 30 <br />11990 Grant Street, Suite 304 • Denver, Colorado 80233 • (303) 452-6611 • Fax (303) 452-2759 <br />