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• <br />Lupton Lakes Gravel Mine - Ft. Lupton Colorado <br />2008 Water Quality Monitoring <br />Groundwater quality monitoring as required by the Division of Minerals and Geology Permit #M-2004-078 <br /> limits by Far North Recharge <br /> 2007 Proposed <br />d _ <br /> Parameters Units CDPHE"2 Baseline Levels Jan08 Apr 08 Jul-08 Oct-08 <br /> Methyl-t-butyl ether Ng/L -- -- -- - --- --- <br /> <br />l0 N Benzene Ng/L 5 ---- <br /> Toluene Ng/L 1,000 ---- -- -_- .--- <br /> Ethylbenzene Ng/L 700 -'-- "'- - - -- "'- <br />0 m,p-Xylene Ng/L ,400 to 10, <br /> o-Xylene pg/L 400 to 10, <br /> Xylene (Total) Ng/L ,400 to 10,0 ---- ---- -- -- -- <br /> Aldrin Ng/L ---- ---- .-. <br /> a-BHC Ng/L <br /> b-BHC Ng/L M_. -__ __ -- --- --- <br /> d-BHC Ng/L --- <br /> g-BHC Ng/L ---- --- ---- --- -- <br /> Chlordane (Technical) Ng/L --- ---- '-- - '-- _-_ <br /> a-Chlordane pg/L 0.10 to 2 <br /> g-Chlordane Ng/L 0.15 <br />c 4,4'-DDD Ng/L 0.1 ---- <br /> <br />V 4,4'-DDE Ng/L 0.1 <br /> <br />C 4,4'-DDT Ng/L 0.002 ---- - " ---- -- -- <br />o Dieldrin Ng/L 42 <br />o Endosulfan I Ng/L 42 <br /> <br />c Endosulfan II Ng/L 42 <br /> <br />0 Endosulfan sulfate pg/L 2 ---- --" '--- -- "-" <br /> Endrin Ng/L 2.1 --- ---- ___ M_ ___ <br /> Endrin aldehyde pg/L 0.008 to 0.4 <br /> Endrin ketone Ng/L 0.004 to 0.2 ---- -- ---- ---- --- <br /> Heptachlor Ng/L 35 to 40 <br /> Heptachlor epoxide Ng/L 0.032 to 3 - -- - --- <br /> Methoxychlor Ng/L - 35 to 40 - - ---- - -- --- - - <br /> Toxaphene Ng/L 0.032 to 3 ---- --- - - -- _- <br />S d D' k' W W-4 Of- d d S d L' <br />t 't b CDPHE Th d <br />e <br />econ ary nn ing a er n C11 s - ugges ?mi s y e secon ary maximum <br />contaminant levels are not enforceable, but are intended as guidelines. <br />1 Colorado Department of Public Health and Environment (CDPHE) maximum contaminant level (MCL) <br />for Drinking Water <br />2 Colorado Department of Public Health and Environment (CDPHE) standards for groundwater <br />3 Dissolved Metals during the Nov. and Dec. 2005 Sampling Events. <br />*Laboratory results shown in RED HIGHLIGHT exceed MCL or suggested limits