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Lupton Lakes Gravel Mine - Ft. Lupton Colorado <br />2007 Water Quality Monitoring <br />Groundwater quality monitoring as required by the Division of Minerals and Geology Permit #M-2004-078 <br /> limits by CRMW05 <br /> <br /> Parameters Units CDPHE'~2 Baseline Levels Dec-06 Apr-07 Jul-07 Oct-07 <br /> Methyl-t-butyl ether Ng/L ---- ---- --- ---- <br /> <br />- <br />01 Benzene Ng/t- 5 <br />---- --- -- ---- ---- <br />(~ lV <br />o q <br />~ <br />Toluene <br />NgrL <br />t,ooo <br />--- ---- ---- ---- -- <br />> <br />`-' A Ethylbenzene NgrL 700 ---- ---- -- --- ---- <br />o ~ <br />` <br />c O <br />` m,p-Xylene Ngrl ,aooto~o,oo ---- ---- --- --- ---- <br />a o-Xylene NgrL ,aoou,o,oo ---- --- ---- - ---- <br /> Xylene (Total) NgrL ,aooio~o,oo ---- ---- ---- ---- ---- <br /> Aldrin ugn ---- ---- ---- ---- ---- <br /> a-BHC NgrL ---- ---- --- ---- --- <br /> b-BHC NgrL ---- -- ---- --- ---- <br /> <br /> d-BHC NgiL ---- ---- ---- ---- -- <br /> g-BHC NgrL --- ---- -•-• •--- ---- <br /> Chlordane (Technical) ugn. ---- ---- ---- - - <br /> <br />~, a-Chlordane Ng,L o.~o to 2 --- -- -- ---- --- <br />v <br />~ <br />g-Chlordane <br />NgrL <br />o.t5 <br />---- ---- -•~ --- -- <br /> <br /> 4,4'-DDD NgrL O.i ---- ---- --- ---- -- <br />v 4,4'-DDE NgrL 0.1 ---- --_ __ --- ---- <br /> <br />~ 4,4'-DDT NgrL 0.002 ---- -- - --- ---- <br /> <br />`o Dieldrin Ng!L a2 --- --- ---- ---- ---- <br />c Endosulfan I NgrL 42 ---- --- - - ---- <br /> <br />~ Endosulfan II NgrL 42 ---- -- --- --- ---- <br /> <br />p Endosulfan sulfate Ngn. 2 -°- --- -- --- ---- <br /> Endrin NgrL 2.i ---- --- ---- ---- --- <br /> Endrin aldehyde NgrL 0.008 to 0.4 ---- ---- ---- ---- <br /> Endrin ketone Ng/L 0.004 to 0.2 ---- ---- --- --- ---- <br /> Heptachlor NgrL 35 to 40 ---- --'- ---- ---- --- <br /> Heptachlor epoxide Ng/L 0.032 to 3 --•- __•• _--_ __ ____ <br /> Methoxychlor Ngrl.. 35 to 40 ---- -- ---- ---- --- <br /> Toxaphene Ng; L 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 />2 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 />