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~~~ <br />caner ~ <br />RECEIVED <br />JUN 152007 "~ <br />GRAND JUNCTION FIELD OFFICE <br />July 17, 2006 RECIAMATDION MINING & SAFETY <br />Russ Means / r ~ ~I~P~" 1~ <br />Colorado Division of Reclamation, Mining, and Safety R <br />Grand Junction Field Office JUN Z ~ ~t007 <br />101 S. Third St, Room 301 <br />Grand Junction, Colorado 81501 Division ofa d S f y n <br />/ ~ ~ Mining <br />RE: Permit No. M-1977-310, JD-6 Mine, Appeal of DMO Determination <br />Mr. Means: <br />Attached is information pertaining to the soil moisture sampler (lysimeter) installed at <br />Cotter Corporation's JD-6 mine. <br />The lysimeter was installed in becember 2006. It is locatcd just north of the mitre waste <br />pile at the JD-6 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 />regulaz basis. To date there has been no success in collecting any water samples from <br />this lysimeter. On two sepazate occasions a couple ot'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 ofthose sampling efforts is <br />also included as Table 1. <br />In summary to date there has been no leachate showing up in the lysimeter located below <br />the JD-6 mine waste dump. Consequently I feel that the ultra conservative approach that <br />has been taken by Cotter Corporation shows that there is minima] potential for <br />contamination of the lower groundwater in this area. <br />]f you have further questions regarding these issues, please call me at Cotter's Nucla <br />office, 970-864-7347. <br />Respectfully, <br />~~ ~~~ <br />en Williams <br />Manager of Mining <br />Cotter Corporation <br />dmo1O-6 - 1 - <br />Cotter Corporation -West Slope Operations <br />P.O. Box 700, 28151 DO Roed, Nucle. CO 51424 USA <br />Telephone 1970) 856-73d7 <br />Fax 1970) 6ea-7257 <br />60/T0 39t1d t1~0(1N dJ00 J31100 L81Lb980L6 TE ~TS L00Z/St/90 <br />