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Ground water quality in the low sections of Foidel and Middle Creeks, near their confluence, is of calcium - <br />bicarbonate sulfate type. Electric conductivity ranges from 1,010 (Nell 008 -AV -2) to 2,120 µmhos (Well 008 - <br />AV -1) and pH concentration range from 7.3 to 8.2 units. <br />Presently, alluvial ground water from Foidel and Middle Creek is not utilized within the permit boundary due to <br />relatively poor waterquality. <br />(5) Permit applications may comply with the requirements, of 2.04.70)(c) and 2.04.7(2)(a) & (b) <br />regarding the seasonal variability of surface and groundwater quality and quantity without the collection of data <br />covering 12 consecutive months if accurate statistical Drocedures, approved by the Division, are used to <br />extrapolate from a data base covering a shorter neriod of time. . . <br />RESPONSE <br />The information presented and referenced in this permit revision application regarding seasonal variations of <br />water quality and quantity represents over five years of intensive hydrologic data collection for the permit and <br />adjacent areas. The data was collected as part of cooperative and complementary monitoring programs <br />conducted by the US Geological Survey, the USDA Agricultural Research Service (formerly Science and <br />Education Administration); mine employees and consultants, and through independent studies and research by <br />educational institutions, and Federal, and State agencies. The data collection and analytical procedures used to <br />develop the information presented in this document have followed accepted scientific and regulatory standards <br />to assure consistency, accuracy, objectivity. <br />0 <br />PR06 -07 2.04 -43 11/07/06 <br />