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• AGRICULTURAL CONSULTANTS INC. <br />Colorado Analytical Laboratory <br />P. O. Drawer 507 - Brighton CO 80b01 <br />303-659-2313 <br />TO: Lou Gaspar cc: Nancy Hawkins DATE: December 30, 1983 <br />COMPANY: Coors Energy Company <br />P. O. Box 467 <br />Golden, CO 80402 <br />BILLING: Accts Payable <br />PO# CE02334M <br />12-13-83 <br />THE FOLLOWING METHODS OF ANALYSIS WERE USED FOR THE ROOF, FLOOR AND <br />INTERBURDEN GEOCHEMICAL ANALYSIS AS RECOMMENDED IN: <br />"Guidelines for the Collection of Baseline Water Quality and <br />Overburden Geochemistry Data", State of Colorado, Department <br />of Natura] Resources, Mined Land Reclamation Division, <br />September 16, 1982. <br />Chemical <br />Parameter <br />i pH <br />Electrical Conductivity <br />Total Cambusta6le Solids <br />Sand <br />Silt <br />Clay <br />Saturation Percentage <br />Sodium Adsorption Ratio <br />Calcium <br />Magnesium <br />Nitrate-Nitrite <br />Sodium <br />Pyritic Sulfur <br />Sulfate Sulfur <br />Organic Sulfur <br />Total Sulfur <br />Arsenic <br />Boron <br />Iron <br />Lead <br />Manganese <br />Mercury <br />Molybdenum <br />Selenium <br />Zinc <br />Note- <br />Methods of <br />Units Analysis <br />Units Saturated Paste (~) <br />umhos/cm Saturated Paste Extract <br />ppm Dry ash; D 3174-73 <br /> Sieve analysis <br /> Hydrometer <br /> Hydrometer <br /> Saturated Paste <br />--- Saturated Paste Extract <br />ppm Saturated Paste Extract <br />ppm Saturated Paste Extract <br />ppm Saturated Paste Extract <br />ppm Saturated Paste Extract <br /> D 2492-79 <br /> D 2492-79 <br /> D 2492-79 <br />ppm D 3177-75 <br />ppm Ammonium Bicarbonate <br />ppm Saturated Paste Extract <br />ppm DTPA <br />ppm DTPA <br />ppm DTPA <br />ppm Acid extract <br />ppm Ammonium oxalate <br />ppm Hot water extract (t) <br />ppm DTPA (~) <br />In order to be consistent with the methods cited in the <br />following reports; the following units are used: <br />Electrical Conductivity mmhos/cm; Total Cambusta6le Solids 7.; <br />Total Sulfur %; Calcium, Magnesium and Sodium meq/Liter. <br />