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RECEIVED <br />AMERICAN MAY 2' ZG13 <br />SODA L.L.P. David Valvoda <br />Division of Reclamation, Plant Manager <br />2717 County Road 215 Telephone (970) 285 -6500 <br />Parachute, CC 81635 Facsimile (970) 285 -6393 <br />Thursday, April 25, 2013 <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 />ENV015.13 <br />RECEIVED <br />APP 2 6 2013 <br />GRAND JUNCIIUN FIELD OFFICE <br />DIVISION OF <br />RECLAMATION MIMING & SAFETf <br />Enclosed are two copies of American Soda's 501h Quarterly Report in compliance with Hard Rock <br />Mining Operation Permit No. M -99 -002. One copy of the document is not bound so it can easily be <br />electronically scanned. These documents include environmental ground water monitoring data <br />collected and compiled during our fiftieth quarter of operations (March 2013). No solution mining <br />activity occurred during the report period. <br />The ground water data summary report is spiral bound as a non - confidential document and includes a <br />comparison of the 50th 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 <br />Indicators 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 one data value above the calculated EWI during the report period. This <br />information is summarized in the Executive Summary of the Ground Water Monitoring report. <br />Should you have any questions or comments regarding this information please contact me at (970) <br />285 -0428 or Celina Akin at (970) 285 -0406. <br />Sincerely, <br />David Valvoda <br />Plant Manager <br />DV /CMA <br />Enclosures: 501h Quarter Ground Water Monitoring Report — Temporary Abandonment Status — <br />Modification #9 EPA Permit No. CO3858 -00000 <br />January 1, 2013 through March 31, 2013 <br />Cc: Kent Walter, BLM enclosures, Nathan Wiser, EPA enclosures <br />Natural Sodium Products For A Cleaner Environment <br />