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May 13 04 05:17p Hruce D. Smith (9701 242-0270 p.3 <br />May 13, 2004 <br />7. A reconnaissance of springs and seeps adjacent to or down gradient of the portal seal will be <br />conducted. Any observed springs or seeps will be monitored weekly for flow conditions. A <br />dye tracer (fluoroscene) will be injected into the mine pool area before head build-up occurs. <br />The intent of the tracer is to potentially identify mine pool water that may be hydraulically <br />connected tocross-gradient ordown-gradient springs or seeps. <br />a. As verbally agreed, the tracer injection wil(not be implemented in the Spring of 2004. <br />Because of drought conditions at the miue site, W WL intends to use any mine pool <br />water that accumulates of sufficient head to support revegetation efforts at the mine <br />site. W WL will land apply any mine water in accordance with CDPHS Hiles and <br />regulations. <br />b. Pending the resorts of a background study of spring water quality in the area of the <br />Logan Wash Mine, W WL will inject the tracer prior to mine pool build-up in April <br />2005. <br />a Should the spring water quality study support inactivation of the CDPS permit, W WL <br />will pursue permit inactivation with the goal of permanently releasing mine water <br />through the discharge pipe. <br />8. As an alternative to number 7 above, DMG has proposed (letter of April 15s; 2004) the option <br />that W WL demonstrate that mine pool water quality meets CDPS permit requirements. W WL <br />may decide to sample and analyze mine pool water after substantial head build-up in the mine <br />to confirm water quality meets or exceeds the CDPS permit requiremems. The potential <br />chemical interference of any injected tracer will be considered in evaluating this option. <br />9. As an aternatve to number 7 or 8 above, W WL rosy elect to permanently pipe Research Mine <br />pool water to Outfa11001 at the mine site. This scenario has been verbally approved by <br />CDPHE. <br />W Wl. will keep DMG informed regarding implementation ofItems 7, 8, and 9 one ofthe alternatives <br />mentioned above. As stated in my letter of Apri116i°, W WI. has implememed the head monitoring <br />program at the Research Mine portal aad will continue to monitor the head on a weekly basis through <br />the extension period and as specified in Item 2 above. <br />Ifyou have any questions or comments, please contact me at 970-242-0170. <br />Sincerely, <br /> <br />Bruce D. swim <br />Principal Hydrogeologist <br />ce: Franklin Miller, Glenn Springs Holdings, Inc. <br />Project File <br />