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~~~ <br />LOTIER <br />~1~`~-/ <br />~ Si~LG' 2esu/f - ©~e S <br />~Q Harry Posey <br />I / Colorado Division of Minerals and Geology <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />RE: Permit No. M-1978-116 SM-18(Wright) Mine <br />Mr. Posey: <br />~~4_ _ ' <br />,/ F1AY 2 ? ZCCS <br />o::~i~ t ..: ~ :............ . <br />May 19, 2005 <br />Cotter Corporation has received the final analytical results of the SPLP test, per the <br />amendment review of Permit No. M-1978-116, dated November 5, 2004 on the surface <br />ore stockpile material at the SM-18/Wright Mine portal area. These preliminary results <br />were attached to the letter accompanying the results of the waste rock SPLP test sent to <br />you last week. Ore production began in mid-March, and a sample of the ore being placed <br />in the surface stockpile was collected April 13, 2005 and submitted for SPLP analyses. <br />The ore sample is from mined rock from the upper sandstone unit of the Salt Wash <br />member of the Morrison formation. The ore sample was collected randomly around the <br />ore stockpile. Grabs were taken from the pile side (at angle of repose) as well as where a <br />loader had dug into the pile creating a much steeper face, near the center of the pile. This <br />sample consisted of material ranging from fine sand to rocks up to about 2 inches. The <br />ore is fairly friable, therefore, no large rocks or fragments of large rocks were included in <br />the sample. <br />The parameters that were analyzed were discussed with you in our March 1, 2005 <br />telephone conversation. These are the parameters from CDPHE Water Quality <br />Commission Regulation No. 35, for the Lower Dolores River Basin. The reporting limits <br />Cotter requested from the lab are based on hardness of the river water equal to 100 mg/l. <br />This hazdness value was used based on discussions with Umetco Minerals personnel <br />involved in sampling of the San Miguel River both up and down stream of the location of <br />the SM-18/Wright Mine portal. <br />r ~y~/ fCottC~poration - est Slope Operations Telephone (970) 864-7347 <br />'-`-P:O' oB z 700-28 5~D Road, Nucla, CO 81424 USA Fax (970) 864-7287 <br />