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To: Roger Garling, Laboratory Supervisor April 11, 2005 <br />Energy Laboratories, Inc. <br />2393 Salt Creek Highway <br />P.O. Box 3258 <br />Casper, Wyoming 82601 <br />Enclosed is another sample that needs tested by the Synthetic Precipitation Leaching <br />Procedure-SPLP. The sample is from west of the Mississippi River. The elements that <br />need tested and the approximate detection limits required (dissolved, except as noted) <br />are: <br />METALS DETECTION LIMIT <br />Aluminum - 80 ug/1 <br />Antimony 5 ug/1 <br />Arsenic 150 ug/1 <br />Barium 500 ug/1 <br />Beryllium 5 ug/1 <br />Cadmium 4 ug/1 <br />Chromium +3 100 ug/1 <br />Chromium +6 10 ug/1 <br />Copper 10 ug/1 <br />Iron (Total Recoverable) 1000 ug/1 <br />Lead 2 ug/1 <br />Manganese 1000 ug/1 <br />Mercury 1 ug/I <br />Nickel 50 ug/1 <br />Selenium 5 ug/1 <br />Silver Q ug/1 <br />Thallium 10 ug/1 <br />Uranium 500 ug/1 <br />Zinc 100 ug/1 <br />INORGANIC PARAMETERS DETECTION LIMITS <br />Fluoride 2 mg/1 <br />Nitrate 10 mg/1 <br />Nitrite 1 mg/1 <br />Boron 0.5 mgfl <br />Chloride 200 mg/1 <br />Sulfate 200 mg/1 <br />