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AMERICAN <br />David Valvoda <br />SODA, L.L.P. Plant Manager <br />2717 County Road 215 k134V9 (INV ONINIW Telephone (970) 285-6500 <br />Parachute, CO 81635Facsimile (970) 285-6393 <br />NOIItlWtl"10:�?J :JO NOISING <br />Tuesday, July 28, 2015 Q3 A I333a ENVO17.15 <br />Mr. Travis Marshall <br />Environmental Protection Specialist <br />Colorado Division of Reclamation, Mining and Safety <br />Grand Junction Field Office <br />101 Third Street, Suite 310 <br />Grand Junction, CO 81501 <br />Dear Mr. Marshall: <br />Enclosed is one bound copy of American Soda's 59th Quarterly Report in compliance with Hard Rock <br />Mining Operation Permit No. M-99-002. One unbound copy of the document will also be sent to the <br />Denver office of CDRMS to the attention of Michelle Ramirez for electronic scanning. These <br />documents include environmental ground water monitoring data collected and compiled during our <br />fifty-ninth quarter of operations (June 2015). No solution mining activity occurred during the report <br />period. <br />The ground water data summary report is spiral bound as a non -confidential document and includes a <br />comparison of the 59th operational quarter with baseline and operational general statistics prior to the <br />current reporting period. In addition, the tables provide information for comparison of Ground Water <br />Standards as provided in Regulation No. 41 and Numeric Protective Levels and Early Warning Indicators <br />as amended in TR -4. <br />Comparison of the data values with the Early Warning Indicators (EWI) and the Numeric Protective <br />Levels (NPL) indicates no data values above the calculated EWI or NPL during the report period. This <br />information is summarized in the Executive Summary of the Ground Water Monitoring report. <br />Presently four wells and one partial well remain in long term stand-by status with cast iron bridge plugs <br />set. As shown in the following table, one well (20-19) has the long string cemented and the short string <br />is set with a cast iron bridge plug. Four production wells (20-36, 20-74, 29-27, and 29-29) have cast <br />iron bridge plugs set in both the long and short well strings. All of these wells successfully passed <br />mechanical integrity testing in June 2014. <br />Natural Sodium Products For A Cleaner Environment <br />