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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 CRMW41 <br /> <br /> Parameters Units CDPHE'~Z Baseline Levels Dec-06 Apr-O7 Jul-07 Oct-07 <br /> Methyl-t-butyl ether ug/L ----- ---- ---- U ---- U <br /> <br />°' Benzene Ng;L 5 --° ---- u ---- u <br />e~ <br />~ <br />Toluene <br />Ng;L <br />t,ooo <br />---- ---- u --- u <br /> <br />`-' a Ethylbenzene Ngrt. 700 ---- --- u ---- u <br />o ~ <br />c o m,p-Xylene ugiL ,aooto,o,oo ---- --- ---- --- --- <br /> o-Xylene ugn_ .aoo to ~o,oa ---- ---- -- ---- ---- <br /> Xylene (Total) NgiL .aoo toio,o ---- --- u ---- u <br /> Aldrin ugn. ---- --- ---- u --- u <br /> a-BHC ug;L __. -- ---- u ---- u <br /> b-BHC NgiL ---- ---- u ---- u <br /> d-BHC ug/L --_ ---- ---- u ---- u <br /> g-BHC vg/L -.~ ---- --- U --- U <br /> Chlordane (Technical) Ng/L --. ---- u ---- ---- <br />w a-Chlordane Ng/L o.to to 2 ---- ---- --- ---- u <br />~ g-Chlordane Ng/L 0.15 ---- --- --- ---- L~ <br /> <br /> <br /> <br /> <br />~ 4,4'-DDT Ng/L 0.002 ---- ---- u --- u <br />o Dieldrin Ng/L 42 ---- --- U --- U <br />c Endosulfan I vgrL a2 ---- ---- u --- u <br /> Endosulfan II Ng/L 42 ---- ---- U ---- U <br />` <br />p Endosulfan sulfate ~g/L 2 ---- ---- U ---- U <br /> Endrin Ng!l. 2.1 --- ---- U ---- U <br /> Endrin aldehyde ug/L 0.008 to 0.4 ---- --- U ---- U <br /> Endrin ketone t,g/L o.004 ro o.2 ---- ---- ---- ---- u <br /> Heptachlor NgiL 35 to 40 ---- ---- U ---- U <br /> Heptachlor epoxide ugiL 0.032 to 3 ---- ---- U -•-- U <br /> Methoxychlor ugiL 3s to ao ---- ---- u ---- u <br /> Toxaphene NglL. 0.032 to 3 ---- ---- U ---- U <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 />