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<br />• iii iiiiiiiiiiiii iii <br />STATE OF C~LOI ~ ~," <br />Roy Romer, Gove <br />DEPARTMENT OF NATURAL RESOURCES <br />MINED LAND RECLAMATION DIVISION <br />FRED R. BANTA, Director <br />December 6, 1988 <br />Ms. Claire Semmer <br />Colorado Yampa Coal Company <br />29587 Routt County Road No. 27 <br />Oak Creek, Colorado 80467 <br />RE: Topsoil/Overburden Analyses-Eckman Park-Permit No. C-81-071 <br />Dear Pls. Semmer: <br />I have enclosed the results of the topsoil and overburden sampling conducted <br />on August 25, 1988. Please find enclosed copies of .the MLRD Monitoring Fact <br />Sheets, the actual laboratory result tabulations, and three tables. Table 1 <br />summarizes the sample label, location and type information; Table 2 is <br />provided to allow an easier comparison of the analysis data; and, Table 3 <br />provides a comparison of the average topsoil and overburden results. You will <br />note that one topsoil and two overburden samples were analyzed using our full <br />suite geochemical analysis, and the remaining samples were analyzed using the <br />partial (fertility) suite. Unfortunately, the full geochemical analysis <br />provides a value for total phosphorous (mg/kg), while the partial list <br />provides a value for extractable phosphorous (mg/kg}, For this reason, the <br />full suite and partia suite samples could not be averaged for the phosphorous <br />parameter. We hope to correct this situation for future analyses. <br />Some observations are as follows: <br />I. In general, the analysis results do not indicate any unsuitable <br />materials. <br />2. The values for nickel are at, or above, the state of Montana <br />unsuitability threshold of 1.0 ppm (DTPA Extractable). <br />3. Extractable phosphorous, and the nitrogen forms tend to be much <br />lower in the spoil material when compared to the topsoil material. <br />215 Centennial Building, 1313 Sherman Street Denver, Colorado 60203-2273 Tel. (303) 866-3567 <br />