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Lupton Lakes Gravel Mine - Ft. Lupton Colorado <br />2007 Water Quality Monitoring <br />(~rnundwater nuality il~onrtorina as required by the Division of Minerals and Geology Permit #M-2004-U78 • <br /> <br />limits b CRMW40 <br /> y 2007 Proposed <br /> '~2 <br /> Parameters Units CDPHE Baseline Levels Dec-06 Apr-07 Jul-07 Oct-07 <br /> Methyl-t-butyl ether Ng~L ---- ---- ---- -- ---- <br />m <br />~ <br />Benzene <br />Ng~L <br />5 -- --- ---- ---- <br />'--- <br />w <br />o w <br />Toluene <br />ugn <br />t,ooo <br />---- --- --- --'- ---- <br />> ~ <br />a Ethylbenzene Ng.L 700 ---- ---- ---- _- ___. <br />o <br />c m,p-Xylene ugrL .400 to ~o,ao ---- ---_ ._.. ____ ____ <br /> <br />Q o-Xylene Ngn ,400 to ~o,oo -- ---- --- ---- ---- <br /> Xylene (Total) Ngn. ,4ootoio, ---- ---- --- ---- ---- <br /> Idrm Ng~L ----- <br />---- ---- ---- ---- <br />---- <br /> a-BHC ugn_ ---- ---- -_. ~ __- <br /> b-BHC NgiL ---- ---- --- --- --- ---- <br /> d-BHC ug~L --- ---- --- ---- --- ---- <br /> g-BHC Ns~L --- ---- --- -- ---- <br /> Chlordane (Technical) Ngrt. ---- --- ---- -' ---~ <br />`" <br />N a-Chlordane ugrt. o.to to 2 ---- ---- ---- ~- ---- <br />.0 <br />~ <br />g-Chlordane <br />Ng/l. <br />0.15 <br />-"- --- --- ____ ---- <br /> <br />v 4,4'-DDE ugn- O.t ---- --- ---- ---- --- <br /> <br />~ 4,4'-DDT Ng/L 0.002 --- °-- --' --° <br />c Dieldrin Ng~L a2 --- -- ~- ---- -- <br />c Endosulfan I Ng~L a2 --- ~-- ~ ~- --- <br /> <br />~ Endosulfan II ugiL a2 ---- ~ -- "- --- <br />~ <br /> <br />O Endosulfan sulfate pgn_ 2 ---- -' -- ---- -- <br /> Endrin ugn. 2.~ --- --- ~- --- ---- <br /> Endrin aldehyde Ngll. 0.008 to 0.4 ---- --- ""-- -""- -'-- <br /> Endrin ketone Ng;L o.ooa to 0.2 ---- --- ---- --- ---- <br /> Heptachlor Ng~L 35 to 40 ---' --- "--- -°- ---- <br /> Heptachlor epoxide Ng/l_ 0.032 to 3 --- --- ---- --- ---- <br /> Methoxychlor NgIL 35 to a0 ---- ---- --- --° ---- <br /> Toxaphene Ng~L 0.032 to 3 --- --- ---- ---- ---- <br />Secondary Drinking Water Standards -Suggested Limits by C;UNHt. I ne 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 />L <br />• <br />