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III IIIIIIIIIIIIIIII <br />999 <br />STATE OF COLORADO <br />Roy Romer, Gove <br />DEPARTMENT OF NATURAL RESOURCES <br />MINED LAND RECLAMATION DIVISION <br />FRED R. BANTA, Director <br />DATE: July 2~, 1989 <br />70: Catny Begej <br />fRUM: Tim K1ng <br />RE: Grassy Gap Topsoil Depth <br />All reclaimed areas at the Grassy Gap mines were tested for topsoil <br />replacement aeptn using a ouclcet auger on July i9, 1989. The so11 was <br />generally rocky. There was some moisture in a few of the contour furrows. <br />The average depth for each pit is shown below with minimum and maximum depths. <br /> Minimum Maximum Average Number of Holes <br />Pit 1 9* 14 11.33* 3 <br />Pit 2 12 20 15 4 <br />P1t 3 11* 16 14 4 <br />Pit 4 21 15 18.33 3 <br />Pit 5 9* 17 12.h 5 <br />Pit 6 9* 20 13.25 3 <br />Note: Pit 4 nas not been fully reclaimed. <br />*InDlcates less than required topsoil deptn of 12 inches <br />referenced on page IV-8 of the Grassy Gap permit. <br />TIC/yjD <br />8318E <br />215 Centennial Building, 1313 Sherman Street Denver, Colorado 80203.2273 Tel. (303) 866-3567 <br />