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iii iiiiiiiiiiiiiiii <br />999 <br />White~iiver Nahcolite inerals <br />January 20, 1999 <br />Mr. Gregg R. Squire, Environmental Protection Specialist <br />Division of Minerals and Geology RECEIVED <br />1313 Sherman St., Room 215 <br />Denver, CO 80203 JAN 2 5 1999 <br />~. ,,, pyrwrals & Geology <br />Subject: Evaluation, Remediation of Spills <br />RE: White River Nahcolite Minerals File No. M-83-194 <br />Dear Mr. Squire: <br />As a result of recent spills, I believe we should propose a plan to address <br />damages from the barc•en liquor leaks. The following is what WRN proposes: <br />Background: On December 26, 1998 and January 8, 1999 spills of barren <br />liquor occurred on the WRN mine site. <br />Scone: The first spill was over an area of 600' X 5' or 3,000 square feet. The <br />second spill was on an area of 200' X 5' or 1000 sq. ft. A total of 4,000 sq.ft. or <br />approximately 1/10 acre was effected. No discharge flowed to state waters or a <br />dry stream bed. Barren liquor is typically characterized by a bicarb content of <br />111 g/1 and 6.9%. Conductivity was approximately 70,000 umhos/cm. The <br />barren liquor was diluted as a result of one foot of snow on the ground. Further <br />dilution is expected from winter and spring precipitation. <br />Plan of Action: Areas effected by the spills will be evaluated by obtaining <br />representative soil sarrlples. Soil samples will be analyzed for soluble salt <br />content. <br />Hieh Soluble Salt Scenario for samples greater than 8 umhos/cm. Remedial <br />action will be required. <br />1. In June 1999 the surface (after drying) will be evaluated and if <br />deposition of salts is visible, the surface (< 1 ") soil material will be removed to <br />disposal pit. <br />2. Approximately four inches of irrigation water will be applied with a <br />chemical to increase soil flocculation. The chemical will improve aeration, <br />increase water penetration and increase dispersion of soluble salts. <br />White Rlvar N~ahcolita Minerals, Llmlted Llablllty Company <br />P. O. Drawer 72, 32a) Co. Rd. 37, Rifle, CO 81650 (tel) 303-878.3674 (fax) 303-878-5866 <br />