1981-03-18_REVISION - M1977342 - Laserfiche WebLink

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Henderson Permit #77-342 March 19, 1981 Page Seven existing interceptor canal around the tailing pond to allow the bypass of fresh water around our facilities throughout the life of the mine and after the operation. 2. In addition to the mine, are any other areas included in this amendment being dewatered? No 3. Please supply the Division with a summary of the water monitoring programs and fish tissue analysis. The water monitoring and aquatic biology programs at Henderson were commenced prior to any construc- tion activity at the project. The water monitoring program is done by an independent contractor and consists of monthly water samples at six locations at the mine site and three locations at the mill site. The only location required for the NPDES permit is the Urad Reservoir outfall since this is the only discharge to surface streams. The aquatic ecology program, including fish flesh analysis, is conducted annually and is also performed by an independent contractor. Aquatics are sampled at six locations in both the Clear Creek watershed and the Williams Fork watershed. The results of these monitoring programs, having been conducted over a period of ten years, are voluminous and, if desired, can be inspected at our offices. 4. There is no mention that ground water is being monitored. If ground water is not being monitored, please give the reason why. If ground water is being monitored, please supply the Division with a summary of the findings. We are particularly interested in knowing if the current tailing deposition has affected the ground water and if so, how and to what extent. One of the Williams Fork River monthly monitoring locations is just below the confluence of Ute Creek with the river. Any ground water flow from the tailing pond would probably surface at this point. To date, the data has not shown any indication of that happening. Ground water is not monitored