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cotter v <br />~q~ <br />REGFI!/ED <br />JUN 15-2007 `~ <br />July 17, 2006 GRAND JUNCTION ric~D OFFICE <br />DIVISION OF <br />Russ Means RECLAMATION MINING 8 SAFETY <br />' Colorado Division of Reclamafion, Mining, and Safety L/ <br />Grand Jtmction Field Office ` <br />101 S. Third St, Room 301 RECD 4'~~ <br />Grand Junction, Colorado 81501 <br />/ ,/ JUN 25 20U7 <br />Rh: Permit No. M-1984=014, JD-8 Mine, Appeal of DMO Determination Division of Reclamation, <br />Mining and Safety <br />Mr. Means: <br />Attached is information pertaining to the soil moistttre sampler (lysimeter) installed at <br />Cotter Corporation's JD-8 mine. <br />The lysimeter was installed in December 2006. It is located just north of the mine waste <br />pile at the JD-8 mine, the site agreed upon in a field meeting with Division of <br />Reclamation, Mining, and Safety (DBMS) personnel. A map showing the location of <br />the lysimeter is included as Figure 1. <br />Following the installation of the lysimeter attempts to collect samples were begun on a <br />regular basis. To date there has been no success in collecting any water samples from <br />this lysimeter. On two sepazate occasions a couple of drops of water collected on the end <br />of the lysimeter tubing, but not enough water has been collected to sample. A <br />spreadsheet showing the dates of sampling and the results of those sampling efforts is <br />also included as Table 1. <br />]n summary to date there has been no leachate showing up in the lysimeter located below <br />the JD-8 mine waste dump. Consequently I feel that the ultra conservative approach that <br />has been taken by Cotter Corporation shows that there is minimal potenrial for <br />contamination of the lower groundwater in this area. <br />If you have further questions regarding these issues, please call me at Cotter's Nucla <br />office, 970-864-7347. <br />Respectfully, ! , // <br />Glen Williams <br />Manager of Mining <br />Cotter Corporation <br />dmoJD~B - 1 - <br />Cotter Corporation -West Slope Operations <br />P.O. Box 700, 28151 OD Roed, Nucla. CO 81a24 USA <br />60/70 39t1d d~Of1N diJ00 b31100 <br />Telephone 1970) B6a-73a7 <br />Fax 19701 86a-7237 <br />L8LL7980L6 L£~TT L00Z/ST/90 <br />