2008-12-17_HYDROLOGY - M2004078 (6)

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Lupton Lakes Gravel Mine - Ft. Lupton Colorado 2008 Water Quality Monitoring Groundwater nuality rnnnitnrinn ne rom sirnrt h.. !hn r1P..i?.i.... s &A*.- ,I_ --j limits by 2007 Proposed North Recharge Parameters Units CDPHE' 2 Baseline Levels Jan-08 Apr-08 Jul-08 Oct-08 Methyl-t-butyl ether Ng/L -- -- Benzene Toluene ug/L 1.000 ---- -- ---- ---- --- Ethylbenzene ug/L 700 O pg/L 4w to 10.0 --- -- - --- ---- o-Xylene Ng/L ,400 to 10,00 1 --- -- --- -- _- Xyiene (Total) pg/L ,400 to 1O,o Aldrin Ng/L --- a-BHC Ng/L -- b-BHC Ng/L --- d-BHC pg/L -- g-BHC N9/L -- Chlordane (Technical) Ng/L --- ---- ---- --- a-Chlordane Ng/L 0.10 to 2 ---- - - --- -- -- C g-Chlordane pg/L 0.75 ---- -- - --- -- --- C 4,4'-DDD Ng/L 0.1 a 4,4'-DDE pg/L 0.1 --- --- --- ---- -- e 4,4'-DDT pg/L 0.002 ---- --- ---- *C Dieldrin Ng/L 42 ---- - - --- o Endosulfan I pg/L 42 ---- Endosulfan II pg/L 42 ---- ---- LM p Endosulfan sulfate pg/L 2 ---- ---- --- --- --- Endrin pg/L 2.1 ---- -- --- -- --- Endrin aldehyde Ng/L 0.008 to 0.4 ---- - --- --- -- Endrin ketone Ng/L 0.004 to 0.2 --- --__ ___- Heptachlor Ng/L 35 to 40 ---- ---- ---- ---- Heptachlor epoxide Ng/L 0.032 to 3 Methoxychlor Ng/L 35 to 40 - Toxaphene . M- '-I-'- _ IAI Ng/L 0.032 to 3 ?+?........a., v. n.nn Iy V VOLVI vL01 wai uO - OUyycsiea LIrm[5 Dy l.url'1C. i ne seconaary maximum contaminant levels are not enforceable, but are intended as guidelines. 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 3 Dissolved Metals during the Nov. and Dec. 2005 Sampling Events. *Laboratory results shown in RED HIGHLIGHT exceed MCL or suggested limits