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;; ~~r~lyiFr energy fuels coal. inc. FEg 5 1996 sou1b11Nd mins • pwt oHla box X19 • Ibronos, wlondo B1]TB • (71B) 7dIfi3B5 Dlvlslpn p1 Muielalb ~ GBOIoyY January 22, 1996 Mr. David Berry Division of Minerals and Geology 1313 Sherman Street, Room 215 Denver, Colorado 80203 iiiiiiiiiiiiiiiiiii 999 RE: 1994 Annual Hydrology Report (AHR) -Response to DMG Issues dated 12/6/95 Southfield Mine, Permit No. C-81-014 Dear David: Following are responses to your issues on the AHR. They follow by category and number according to your letter. Surface Water 1) Flow measurements in Second Alkali and Magpie Creeks are taken on an opportunistic basis in accordance with Exhibit 25, Hydrologic Monitoring Plan. The flow measurements and samples are taken during significant flow events. In the years that EFCI has monitored these creeks, significant flow events occur rarely even in response to heavy precipitation events. The flow measurements documented in the 1994 AHR, similar to previous reporting periods, are typically the only significant flow events that occurred during each monitoring quarter. 2) EFCI reviewed its surface water monitoring and sampling data for the 4th quarter of ]995. These records show that Newlin Creek and Oak Creek were monitored and sampled on May 19, 1995, and only Second Alkali Creek was monitored on April 25, 1995. This information is corrected on Table 14 of the AHR and attached hereto for your records. 3) Based on the monitoring data review mentioned above, the records show that Magpie Creek was sampled and monitored on April 26, 1995. This correction has also been made on attached Table 14. 4) EFCI always visually monitors for oil and grease at the creek monitoring points. There has never been any indications of oil and grease at any of the monitoring locations. In the future, a zero entry will be made in the analytical data to indicate this condition.