2008-12-17_HYDROLOGY - M2004078 (6)

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Lupton Lakes Gravel Mine - Ft. Lupton Colorado 2008 Water Quality Monitoring Groundwater nuality monitarina as required by the Division of Minerals and Geoloav Permit #M-2004-078 limits by CRMW41 Parameters Units CDPHE' 2 Baseline Levels Jan-08 Apr-08 Jul-08 Oct-08 Methyl-t-butyl ether Ng/L ---- ---- -- u - - u m Benzene Ng/L 5 ---- - - u --- u Toluene pg/L 1,000 ---- ---- u - - u Ethylbenzene pg/L 700 -- -- u -- u m,p-Xylene pg/L 400 to 10, ---- -""- "' ' -.-- u `_ U a o-Xylene pg/L 400 to 10,0 ---- --__ -- - - Xylene (Total) Ng/L 1,400 to 10, ---- --- u ---- u Aldrin Ng/L - ---- -- U --- U a-BHC Ng/L -? --- ---- U --- U b-BHC pg/L -- ---- ---- u --- U d-BHC pg/L u --- u g-BHC pg/L --- ---- ---- u ---- U Chlordane (Technical) pg/L ---- ---- U -" U a-Chlordane Ng/L 0.10 to 2 ---- ---- U -- U g-Chlordane Ng/L 0.15 ---- -- u --- u E 4,41-DDD pg/L 0.1 ---- u .-' u v 4,4'-DDE pg/L 0.1 ---- - u - - u c 4,4'-DDT Ng/L 0.002 '-_- -' U """" U *c Dieldrin Ng/L 42 ---- - U - " U o Endosulfan I Ng/L 42 ---- -- u --" u Endosulfan II pg/L 42 "'- - U U p Endosulfan sulfate Ng/L 2 ---- -- U --- U Endrin Ng/L 2.1 ---- ---' U " -' U Endrin aldehyde Ng/L 0.008 to 0.4 ---- --- u -- u Endrin ketone Ng/L 0.004 to 0.2 --- --- u ---- u Heptachlor pg/L 35 to 40 ---- --' U u Heptachlor epoxide pg/L 0.032 to 3 ---- --- U -- u Methoxychlor pg/L 35 to 40 - -- -- U --- U Toxa hene pg/L 0.032 to 3 -- ---- U ---- U 5econaaryurinKing water stanaaras - suggested omits oy %,urnt. i ne secondary maximum contaminant levels are not enforceable, but are intended as guidelines. 1 Colorado Department of Public Health and Environment (CDPHE) maximum contaminant level (MCL) for Drinking Water 2 Colorado Department of Public Health and Environment (CDPHE) standards for groundwater *Laboratory results shown in RED HIGHLIGHT exceed MCL or suggested limits