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Appropriate parameters and analytical detection limits for water samples, <br />taken from CDPHE-WQCC Regulation No. 31, <br />"The Basic Standards and Methodologies for Surface Water" <br />(5 CCR 1002-31) <br />web site at http•//www cdphe state co us/op/reps/waterreps/100231 pdf <br />Parameter Maximum Acceptable <br />Detection Limit Taken from Regulation 31 <br />Table <br />H 0.1 std unit I <br />Fluoride 2.0 m L ~ II <br />Boron 0.75 m L II <br />Sulfate 250 m L ' II <br /> Metals in ug/L, <br />Analyzed by dissolved <br />method <br />Aluminum 87 u L III <br />Antimon 6.0 u L III <br />Arsenic 10 u L Pro osed re ulation <br />Barium 490 u L III <br />Be Ilium 4.0 u L III <br />Cadmium 2.2 u L III & IV <br />Chromium III 74 u L III & IV <br />Chromium VI 11 u /L III <br />Co er 9.Ou L III&IV <br />Iron 300 u L III <br />Lead 2.5 u L III & IV <br />Man anese 50 u L III <br />Mercu 0.77 u L III <br />Nickel 52 u /L III & IV <br />Selenium 4.6 u L III <br />Silver 0.08 u L III & IV <br />Thallium 0.5 u L III <br />Uranium 1501 u L III & IV <br />Zinc 117 u L III & IV <br />'Standards apply if receiving stream is classified for drinking water. <br />Samples should be filtered through 0.45 micron filter. <br />If questions, please contact DMG staff member Harry Posey at (303) 866-3927 for clarification. <br />5 <br />