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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 CRMW06 <br /> Parameters Units CDPHE'~~ Baseline Levels Dec-06 Apr-07 Jul-07 Oct-07 <br /> Methyl-t-butyl ether ug/L ---- ---- u ---- u <br />°-' <br />:. <br /> <br />m n Benzene Ng/L s u u <br /> <br />---- --- ---- <br /> <br />~ ~ <br />Toluene <br />ug L <br />t,ooo U ___ U <br />---- --- <br /> <br /> Ethylbenzene Ng~~ goo ---- ---- u --- u <br /> <br />a o <br />` m,p-Xylene Ng/l. ,4ooto~o,o ---- ---- --- ---- --- <br />a o-Xylene Ng/L ,~ooeo,o, ---- ---- -- --- ---- <br /> Xylene (Total) Ng/L soo to ~o, ---- ---- u ---- U <br /> Aldrin ~g/L --- ---- -- u ---- u <br /> a-BHC Ng/L ---- ---- u ---- u <br /> b-BHC Ng;L ---- ---- u ---- u <br /> d-BHC ug/L ---- ---- U ---- U <br /> g-BHC ug;L .._._ ---- ---- a --- u <br /> Chlordane (Technical) uglL ---- U --'- --- <br /> <br />"' <br />N a-Chlordane Ng/L 0.10 to 2 ---- ---' "" --° U <br />~ g-Chlordane ~g/L O.ts ---- -- ---- ---- U <br /> 4,4'-DDD ~giL 0.1 ---- ---- u ---- u <br /> <br />v 4,4'-DDE ug,L o.t ---- -- u --- u <br /> <br />~ 4,4'-DDT Ng/L 0.002 ---- ---- u --- u <br />c Dieldrin Ng/L az ---- ---- u ---- u <br />e Endosulfan I Ngn_ az ---- --- u ---- u <br /> <br />~ Endosulfan II Ng/L a2 ---- ---- u ---- u <br />o~ <br />p Endosulfan sulfate Ng/L 2 ---- ---- U --- U <br /> Endrin Ng/L 2.1 ---- ---- U ---- U <br /> Endrin aldehyde Ng/L o.ooa to o:a ---- --- u -- u <br /> Endrin ketone Ng/L o.ooa to o.z ---- --- --- --- u <br /> Heptachlor Ng;L 35 to ao --° ---- U - U <br /> Heptachlor epoxide Ng/l_ 0.032 to 3 ---- ---- U --- U <br /> Methoxychlor Ng;L 35 to a0 ---- ---- U ---- U <br /> Toxaphene Ng/L 0.032 to 3 ---- ---- U ---- U <br />C, <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 />~ Colorado Department of Public Health and Environment (CDPHE) standards for groundwater <br />'Dissolved Metals during the Nov. and Dec. 2005 Sampling Events. <br />'Lai;ontnry r~:~~~~lts sh~:;~~rrn ir: RrD H!l'~-iLl,it1' ex;;t:~ed MCL :. s~!;tyes?eel ~,~nits <br />