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C UNITED STATES DEPARTMENT OF AGRICULTURE <br />SOIL CONSERVATION SERVICE <br />422 East First St., Trinidad, CO 81082 6/5/81 <br />Mr. Dave Zeeb <br />CF&I Mining Dept. <br />P.0. Sox 316 <br />Pueblo, CO 81002 <br />Dear Dave: - <br />Enclosed are soil survey maps, map unit descriptions, and test infor- <br />mation for samples taken in Apache Canyon, and Maxwell mine. <br />The soil at the proposed rock dust bin site was determined to be <br />Prieta loam instead of Noden soil as indicated on the soil map. The <br />site of the proposed waste dump at the Maxwell mine was also Prieta. <br />Soil samples of proposed air shaft sites in Apache Canyon were deter- . <br />mined to be Fuera clay loam, and Table Mountain loam. The following <br />information and test results from the soil samples taken for ph, <br />SAR, etc. <br />..#1 Rock dust bin site (A - B - C- profile) Maxwell mine. <br />Al horizon; loam 0 to 11 inche, Ph = 7.2, SAR = 4.0, EC 0.9. <br />B2t ho-izon; clay loam 11 to 2'.: .chess ph - 7.4, SAR - 8.0, EC = 1.8. <br />Cr horizon; hard shale 20 inche: <br />Recommendation: Separate the surface layer from subsoil because of <br />the high organic matter content in the A horizon. Both layers are <br />good growth mediums to 's.ablish vegetation and do not have any <br />hazards other than bedrock at a depth of 20 inches. Solvable salts <br />are not a probles in this soil. Soi! type is Prieta loam. <br />!t2 ':paste Dump si.e, Maxwell :tine. <br />Al horizon; clay loam 0-2 inches, oh 7.0, SAR 3.9, EC 0.8. <br />82t horizon; c_ay ?-la inches, ph 7.d, SAR 4.6, EC 1.2. <br />:. horizon; clay 1a-19 inches, ph 7.a, SAR 6.0, EC 1.6. <br />Cr horizon; hard shale. <br />Recommen• :n: A and B horizons should be stockpiled together because <br />of the the :ss of Al and the overall absence of organic matter in the <br />profile. .i three layers are good growth mediums for vegetation with <br />suff:ci: .rater. This soil does not have problems with solvable salts <br />and ph. _.ccess fines is the only limitation of this soil. Soil type <br />is Prieta clay loam. . <br />0 <br />