2008-12-17_HYDROLOGY - M2004078 (6)

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Lupton Lakes Gravel Mine - Ft. Lupton Colorado 2008 Water Quality Monitoring Groundwater quality monitorina as required by the Division of Minerals and Geologv Permit #M-2004-078 limits by CRMWO1 Parameters Units CDPHI?'s Baseline Levels Jan-08 Apr-08 Jul-08 Oct-08 Methyl-t-butyl ether Ng/L - --- -- U -- U • Benzene Ng/L 5 ---- ---- U - U Toluene Ng/L 1,000 Ethylbenzene Ng/L 700 ---- - U --- U 0 m,p-Xylene pg/L ,400 to 10.00 1 --- --- --- -- U U o-Xylene pg/L ,400 to 10,0 Xylene (Total) Ng/L ,400 to 10,0 --- -- U -- U Aldrin Ng/L - --- - - U - U a-BHC pg/L --- --- -- U - - u b-BHC Ng/L ----- ---- --- u ---- U d-BHC pg/L - ---- -- U ---- u g-BHC pg/L U --- u Chlordane (Technical) Ng/L ...- u --- u a-Chlordane pg/L 0.10 to 2 ---- --- u -- u C g-Chlordane Ng/L 0.15 '-'- - - U --- u C 4,4'-DDD pg/L 0.1 --- -- U ---- U a 4,4'-DDE pg/L 0.1 --- --- u --- U C 4,4'-DDT Ng/L 0.002 - - U -- U o Dieldrin pg/L 42 -~- - U -- u o Endosulfan I pg/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 pg/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 hens Ng/L 0.032 to 3 - - U - U 5econaaryunnKing vvater stanaaras - auggestea Limits oy t,,urnr-. ne secvnaary rnaxnnurrt 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