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event any rock having a demonstrated acid generating potential should be discovered <br />sometime in the future, it will be stored inside the mine, or out of the weather, to avoid <br />precipitation contact. Alternatively in the future, if materials are found that by standard <br />laboratory testing are shown to be potentially acid generating, then additional testing would be <br />performed to allow better prediction of acid generating potential and the timeframes in which <br />acid generation might occur. This information would then be used to design and implement <br />any containment systems which might be necessary. <br />Although not related to DRMS regulation, fuel storage tanks will likely be located within the <br />permit area. They will have secondary containment to protect surface waters that will be equal <br />to their total volume plus additional storage for precipitation events; generally calculated at <br />one hundred and ten percent of tank volume. As the quantity of fuel stored on site is <br />anticipated to be so small, this containment is not required by regulation, but will be installed <br />and implemented by the operator as part of good workmanlike practice. <br />11 SURFACE WATER QUALITY STANDARDS <br />The site, as described previously, is located high on the north slope of Mineral Hill, and there <br />are no perennial streams. The closest stream that can be considered perennial would be the <br />lower reaches of Barnard Gulch, a distance of nearly 6 stream -miles away. Any testing of the <br />waters at that point would amount to trespass on someone else's private property, and no <br />reasonable scenario could be developed that would produce any measurable impacts to waters <br />located that far downstream of the permit area. The standards for that stream are those <br />standards set by the Colorado Department of Public Health and Environment (CDPHE) under <br />the laws and regulations developed for and by the Environmental Protection Agency (USEPA). <br />12 WATER QUALITY MONITORING PLAN <br />No water quality monitoring plan is currently appropriate for this permit area as no surface or <br />groundwater is present, no acid producing materials are currently found to be present, nor are <br />designated chemicals in use. If the situation changes in the future where any of these features <br />are found, then that data will be evaluated and appropriate plans will be developed. <br />7 <br />