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Ground water quality in the low sections of Foidel and Middle Creeks, neaz 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 riot utilized within the permit boundary due to <br />relatively poor waterquality. , <br />f51 Permit annlications ma~omply with the requirements, of 2 04.7(4)(c) and 2.04.7(21(al & (bl <br />regardine the seasonal variability of surface and azoundwater quality and auantity without the collection of data <br />coverine 12 consecutive months if accurate statistical~rocedures. approved by the Division. aze used to <br />extrauolate from a data base coverine a shorter period 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 pemut 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 reseazch 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 standazds <br />to assure consistency, accuracy, objectivity. <br /> <br /> <br />PR06-07 2.04-43 11/07/06 <br />