1998-03-12_HYDROLOGY - M1977493 - Laserfiche WebLink

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Mr. Allen C. Sorenson - DMG Page 4 March 10, 1998 TABLE 2 Comparison of Standards Based on Different Hardness (Values in ugA unless otherwise specified) Parameter WQs WQs Median of Reservoir Data Hardness(mg/I)" 104 97 Arsenic(ac) 50.00 50.00 ND a Cadmium(ac-tr) 4.10 379 0.50 Cadmium(ch) 1.17 1.11 0.50 Chromium III(ac) 50.00 50.00 ND Chromium VI(ac) 18.4 17.23 ND b Chromium VI(ch) 18.4 17.23 ND b Copper(ac) 18.4 17.23 3.3 Copper(ch) 12.21 11.52 3.3 Iron(ch) 300.00 300.00 55 Iron(ch) 1000 1000 715 Lead(ac) 102.12 91.25 1.2 Lead(ch) 4.11 3.73 1.2 Manganese(ch) 50 50.00 41 Manganese(ch) 1000 1000 44 Mercury(ch) 0.10 010 ND Nickel(ac) 950.12 901.12 ND Nickel(ch) 98.47 93.39 ND Selenium(ch) 17.00 17.00 ND Silver(ac) 2.17 1 93 ND Silver(ch-tr) 0.08 0.07 ND Zinc (ac) 120.98 114.04 20 Zinc(ch) 109.57 103.29 20 "ND"means that all values were below the method detection limit. b One value was measured above the method detection limit but below the PQL. Since there is still uncertainties attached to this value, it is listed as ND. b. Use potentially dissolved method instead of dissolved in analyzing reservoir releases. We believe that this request is outside the scope of DMG's authority in that its genesis appears to be § 6.9.2(2)(g) of the Commission's discharge permit regulations. Water released from Eagle Park Reservoir is released in the exercise of water rights. It does not require a discharge permit and we would object to meeting discharge permit like requirements. To correctly determine compliance with the water quality standards, comparison is made between the levels of dissolved metals in the reservoir and stream with the appropriate dissolved standards. The intent of the potential dissolved analysis is to measure what is dissolved as well as what is