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C <br />UNITED STATES DEPARTMENT OF AGRICULTURE <br />SOIL CONSERVATION SERVICE <br />a22 East First St., Trinidad, CO 61082 6i 5i B1 <br />Mr. Dave Zeeb <br />CF&I [dining Dept. <br />P.O. Box 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 loan 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 t•9ountain loam. The following <br />information and test results from the sail samples taken for ph, <br />$AR, etc. _ • <br />#1 Rock dust bin site (A - B - Cr profile) Maxwell mine. <br />Al horizon; loam 0 to 11 inches: Ph = 7.2, SAR = 4.0, EC = 0.°. <br />B2t horizon; clay loam 11 to 20 inches: ph - 7.a, SAR - 8.0, EC 1.8. <br />Cr horizon; hard shale 20 inches. <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 establish vegetation and do not have any <br />hazards other than bedrock at a depth of 20 inches. Soluable salts <br />are not a problem in this soil. Soil type is Prieta loam. <br />#2 Waste Dump site, Maxwell mine. <br />Al horizon; clay loam 0-2 inches, ph 7.0, SAR 3.9, EC 0.6. <br />B2t horizon; clay 2-14 inches, ph 7.4, SAR 4.6, EC 1.2. <br />C horizon; clay 14-19 inches, ph 7.4, SAR 6.0, EC 1.6. <br />Cr horizon; hard shale. <br />Recommendation: A and B horizons should be stockpiled together because <br />of the thinness of Al and the overall absence of organic matter in the <br />profile. All three layers are good growth mediums For vegetation with <br />sufficient water. This soil does not have problems with Soluable salts <br />and ph. Excess fines is the only limitation of this soil. Soil type <br />is Prieta clay loam. <br />o• <br />