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<br /> <br />TRAPPER MINING INC. <br />July 12, 1990 <br />CERTIFIED #P468756337 <br />Mr. David Berry <br />Colorado Mined Land Reclamation Division <br />215 Centennial Bldg <br />1313 Sherman Street <br />Denver, CO 80203 <br />Dear David: <br />Re: Adequacy Review Response for Technical Revision 48-C-81-010 <br />This letter is in response to the Divisions review of technical revision 48. <br />Section 1.0 -Annual Reclamation Report <br />~~~~~ <br />JUG i r, 199Q <br />tif7 v~!°J ~.r~f•1U <br />Trapper requeszs that the Division make a preliminary determination regarding compliance with <br />the approximate original contour (AOC) requirements. Let me know what additional information <br />Trapper would need to submit to the Division for this review. <br />Section 2.0 -Annual Hydrology Repott <br />Sections 2.1-2.7 -The Divisions interpretation is correct as no changes are requested by Trapper. <br />Section 2.8 -Appropriate abandonment and reporting requirements will comply with Colorado regulation <br />4.07.3(2.3). <br />Section 2.9 -Vanadium -Trapper requested this parameter be dropped from list A-1 and lists B & D. The <br />Division approved only parameter elimination for list A-1. Is there a problem with deleting vana- <br />dium sampling from the B & D lists? Updated tables remove vanadium sampling from list A-1, B & <br />D. <br />TDS <br />1. Trapper is currently sampling TDS and conductivity each quarter for surface sites. To date, <br />no correlation between conductivity and TDS has been made for surface water. Trapper <br />will continue to sample both parameters until such correlations are made. <br />2. Trapper withdraws its request to drop quarterly TDS sampling associated with the White <br />Sandstone, Backf"ill and Alluvial Aquifers. Well wnsistency with regard to TDS levels is to <br />variable to discontinue sampling. Attached is a revised page 4-241d, 4-243, and 4-244. <br />Ash Wells <br />Trapper currently has seve IB established"for asp onit purposes (list D, pages 4-243 and <br />4-244) and include GD-2, D-3 GF4, GFS, GF6,(GF7~ and Fl l <br />I. Well GD-3 and GF-11 are located on previously regraded and topsoiled areas. All other <br />ash wells, with the exception of GF4 and GF7, are located [o monitor potential spoil prob- <br />lems in Derringer and Enfield pits. To date, no utility waste has been placed in either <br />P.0. Box 187 Craig, Colorado 81626 (303) 824-4401 <br />