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Lupton Lakes Gravel Mine - Ft. Lupton Colorado <br />2007 Water Quality Monitoring <br />Groundwater uali monrtonn as re wired b the Division of Minerals and Geolo Permit #M-2004-018 <br />q tY 9 9 Y 9Y <br /> CRMW02 <br /> limits by <br /> Parameters Units CDPHE'~2 Baseline Levels Dec-06 Apr-07 Jul-07 Oct-07 <br /> Methyl-t-butyl ether uglL ---- ---- --- --- ---- <br />°' Benzene ugn 5 <br />w <br />~ ~ <br />Toluene <br />NglL <br />t.ooo <br />---- <br />--- -- -- <br /> <br />~ s Ethylbenzene Ngn_ 700 ---- ---- - ---- ---- <br />A ~ <br />c o m,p-Xylene Ngn_ ,~ooto,o,oo ---- --- ---- --- ---- <br /> <br />a o-Xylene vgn ,4000,0, ---- ---- ---- ---- ---- <br /> Xylene (Total) ugn ,46010 10, ---- --'- --- ---- ---- <br /> Aldrin Ngn. ---- ---- --- -- ---- <br /> a-BHC ugn_ ---- ---- --- ---- ---- <br /> b-BHC NgrL ---- ---- ---- ---- ---- <br /> d-BHC Ngn_ ---- --_ __ ---- ---- <br /> g-BHC NglL ---- --- ---- ---- -- <br /> Chlordane (Technical) NgrL ---- --- --- --` <br />;~ a-Chlordane NglL o.toto2 ---- -- ___ __ _-__ <br />~ g-Chlordane ugrL a~5 ---- --- -`- --- ---- <br />a. 4,4'-DDD Ngn. o.t ---- -- ---- ---- ---- <br /> <br /> 4,4'-DDE NglL o•' ---- --- ---- -- ---- <br /> <br />~ 4,4'-DDT Ng/L 0.002 ---- --- ---- --- --- <br /> <br />p Dieldrin Ng/l- 42 ---- --- --- -- ---~ <br />c Endosulfan I Nglt_ 42 ---- --- -- --"' ---~ <br /> <br />~ Endosulfan II NglL a2 ---- --- --- -`- ---- <br /> <br />~ <br />~ Endosulfan sulfate NglL 2 <br />---- --- --- - ---- <br /> Endrin NglL 2.t ---- --- --- ~- ---- <br /> Endrin aldehyde NglL o.ooa to o.a ---- -- --- -- -`- <br /> Endrin ketone uglL o.ooa to 0.2 ---- --- --- --- ---- <br /> Heptachlor rig/L 35 to 40 ---" -"-" "--- --" ---' <br /> Heptachlor epoxide r~glL 0.032 to 3 ---- --- -.-- -_- _-- <br /> Methoxychlor Ng~l_ 35 to 40 ---- ---- ---- ---- ---- <br /> Toxaphene NglL 0.032 to 3 ---- ---- ---- ---- ---- <br />Secondary Drinking Water Standards -Suggested Limits by CDPHE. The secondary maximum <br />contaminant levels are not enforceable, but are intended as guidelines. <br />' Colorado Department of Public Health and Environment (CDPHE) maximum contaminant level (MCL) <br />for Drinking Water <br />z Colorado Department of Public Health and Environment (CDPHE) standards for groundwater <br />'Laboratory results shown in RED HIGHLIGHT exceed MCL or suggested limits <br />• <br />• <br />