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• III IIIIIIIIIIIII III • 999 STATE OF COLORADO DIVISION OF MINERALS AND GEOLOGY Depanmem of Nawral Resources 131 7 Sherman 51., Room 215 J g Denver, Colorario 80203 l ~~ Yhonc. 13031 066-3 567 I I FAX: IJ031832~8106 DEPARTMENT OF NATURAL August 11, 1995 RESOURCES ~ Roy Romer ~ Governor lames 5. Lochhead Sally Hayes &ecmrve Dueuor wtichael e. Long Battle Mountain Resowces, [nc. Division Director P.O. Box 310 San Luis, CO 81152-0310 Re: San Luis Project, Permit No. M-88-112 Dear Ms. Hayes: I finally have had an opportunity to review yow correspondence dated July 10 and i 11, 1995 regarding a few outstanding matters at the San Luis Mine. As you stated in yow Jply 11, 1995 letter, the problem you have with the M-14 well will be resolved this month. Wheh it is resolved, send me a letter outlining what was done to take caze of the problem. Also, you stated that the size of the containment area for the make-up water tank overflow had to be reduced be ause of "the sofr ground in the southwest corner." Please provide the Division with an as-built dra 'ng of the final structure so an accwate document can be placed in the files. In your July 10, 1995 letter, you outlined the then current status of several outstan ling items. There have been quite a few changes since July 10, including: (1) the Division's approv I of TR-017 and conditional approval of TR-018, (2) yow response to the M-14 monitoring well pr blem, (3) yow submittal of TR-023 addressing the discontinuation of monitoring requirements for ten piezometers and the once-a-week sampling of the Inco tailings, and (4) yow response to the spi of distance issue. The list of outstanding issues grows smaller every month. As you pointed out in paragraph E of yow July 10, 1995 letter, you will be submitting an amendment (technical revision) to the permit changing the post-mining land use foy~ the old office site. You indicated a concern about my request for water samples from the water ells at the site. The reason 1 suggested taking samples from the water wells is in regard to the requirement of Rule 3.1.7(8), which states, "An operator shall demonstrate, to the satisfaction of t e Office, that reclamation has been achieved so that existing and reasonably potential futwe use f groundwater are protected." You may not be able to demonstrate protection of groundwater wit out sampling the water wells. If you can demonstrate that the groundwater was not adversely imps ed from the heap leach operation without the water samples, then provide the information when you submit your release request.