2007-11-23_HYDROLOGY - M1977300 (7)

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Cotter Schwartzwalder Mine Hydrology Study All Analytes-- Surface Water Analytical Results Whetstone Associates 46 Parameter 1119199 pH (Std. Units) 3.6 -------------'----------------------------------------------------------------------------------------------'-- - Conductivity, specific (uS/cm) - ------------------------------------------------------------------------------ 564 Total dissolved solids (mg/L) <t -----------U ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Total suspended solids (mg/L) <t U Hardness, total (mg/L) <t U Alkalinity, total (mg/L) <t U Nitrate Nitrogen (mg/L) <0.1 -----------U ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Ammonia, total (mg/L) O U Calcium, dissolved (mg/L) - <0.1 U Sodium, dissolved (mg/L) <5 -----------U ----------------------------------------------------------------------------------------------------------------- - Potassium, dissolved (mg/L) - ----------------------------------------------------------------- <0.3 U ----- - --- -------- --------------------------------- ----- Sulfate (mg/L) -------- --- ----------- ----- - - - ------------------------------------------------------------------------------------------- Q.9 U Chloride (mg/L) 60 ------------------------ ------------ ------------ ---- ------ --------- -- ---- -------------- ---------- - Aluminum, dissolved (mg/L) - - ---- ---------------------------------------------------------------------- <0.5 U Copper, dissolved (mg/L) <0.02 U ------ ' ------------------ -- - - Iron, dissolved (mg/L) - ----------------------------------------------- - - - - - -- ------------------------------------------------------------------------- -------------------- <0.03 U ------------------ - ---------- ---------------------------------------------------------------- - ----- ----------------------------------------------------------------------------- Magnesium, dissolved (mg/L) <0.1 U Manganese, dissolved (mg/L) <0.01 U -------------------------------- Zinc, dissolved (mg/L) <0.005 U ----------------------------------------------------------- --------- -- -------- - --------------------------------------------------------------------------------------------------------- Uranium, dissolved (pCi/L) 0.0003 Uranium, suspended (pCi/L) 0.0001 B Radium-226, suspended (pCi/L) 0 Printed 11 07 5:28:38 AM age 22 of 74