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Re-,ort on So? 1 Samoles Graina,e rpa , <br /> • �- _ —_ , <br /> Caa i Mine '3asin near Redstone, Colorado <br /> he area , located in Coal h,Sin ne-r Redstone, Colorado, was eXa[i!'ned <br /> on Septemiter 18, 1979 {see r t;* for sample location' . FotirtEen soil samples <br /> were taken at this time for anaiysis . At. e ch Point, about 5 core samples <br /> 'riere taken to the depth of the restricting boulder layer and combined, to <br /> form a reprEs?nta"ve sample. The samples were air--dried and subjected <br /> to chemical analysis . The lelancos shale samples were coarsely grcund before <br /> 4;hey were analysed. <br /> ;`fiethLds. <br /> Salinity Extract - Distil led ',safer was measure' into the samples to <br /> t ,e Point of saturation to obtain saturation perCen Cages. After det:.r- <br /> • mining the pH of the pastes , they lvere subjected . to vscuuM f' 1 trat iOn <br /> and the electrical conductivity Gf the 2/.t?'?CtS 'r.ere determined. Cd1,C?Ui'i, <br /> ,mag,^,es iuin and sOci:lri concentrations ', `are 'eaSi rECi by atcimi C abso?'p�i on <br /> spectroscopy, and tile sodium absorption ratios were Cal_ulated f roln the <br /> ensuing data. <br /> Fertility Components - The samples mere extracted with an ar„oii:u,n <br /> bicarbonate - D T PA sol ut ion. Nitrate-nitrogen and }phosphorus were <br /> deter-missed Colorimetrically And potassiumi�, iron, manga,neSe, coppe. cnd <br /> Zinc Concentrations viere determined ily atomic absorrL; .n Spectroscopy. <br /> Percent CrjaniC N1 tter - organic matter content of the xaterial -,•.,as <br /> determir:ed by digestion with acid and Subseoue^t ferrous sulfate titration. <br /> Particle Sice distributions , Jere nGt on the soils Since <br /> they conzained a c- eat am•_unt of or�an•ic matter ;',rich is coi;a7on to ^Test <br /> forest soils . O!"cani matter prese..;1t in aillounts tend <br /> *Exhibit III-G-2 in map jacket . <br />