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Lupton Lakes Sand and Gravel Mine - Ft. Lupton, Colorado <br />Water Quality Monitoring <br />Groundwater quality monitoring as required by the Division of Minerals and Geology Permit #M-2004-078 <br />• <br /> limits by CRMW-41 <br /> Parameters Units CDPHE'~2 Oct-OS Nov-05 Dec-o5 Apr-06 Jul-06 Oct-06 <br /> Methyl-t-butyl ether pgr'L ----- ----- U U U U U <br />~ <br />is ~ Benzene Ng~L 5 ----- U U U U U <br />o ~ <br />~ ~ <br />Toluene <br />Ng/l. <br />1,000 <br />----- <br />U <br />U <br />U <br />U <br />U <br />O Ethylbenzene Ng/L goo ---- U U U U U <br />o <br />` m,p-Xylene pg/L ,aoa co ~o, ----- U U U U U <br />e <br /> o-Xylene Ng/L .aoo to ~o.oo ----- U U U U U <br /> Aldrin pg/L. ---- ----- U U U U U <br /> a-BHC pg/L ---- ----- U U U U U <br /> b-BHC pg/L ---- ----- U U U U U <br /> d-BHC NgrL ----- ----- U U U U U <br /> g-BHC py/L --- ----- U U U U U <br /> a-Chlordane pg/L O.to to z ----- U U U U U <br />~a g-Chlordane ug/L o.to to 2 ----- U U U U U <br />v <br />~ <br />4,4'-DDD <br />pg/L <br />0.15 <br />----- <br />U <br />U <br />U <br />U <br />U <br />0 <br />a <br />4,4'-DDE <br />Ng/L <br />o.t <br />----- <br />U <br />U <br />U <br />U <br />U <br /> <br />~ 4,4'-DDT pg/L o~~ ----- U U U U U <br />~ Dieldrin pct/L 0.002 ----- U U U U U <br />o Endosulfan I Ng/L a2 ----- U U U U U <br />t <br />o <br />Endosulfan II <br />pg/L <br />a2 <br />----- <br />U <br />U <br />U <br />U <br />U <br />~ Endosulfan sulfate Ng/L a2 ----- U U U U U <br />, <br />O Endrin pg/L 2 ----- U U U U U <br /> Endrin aldehyde pq/L 2.~ ---- U U U U U <br /> Endrin ketone Ng/L ---- ---- U U U U U <br /> Heptachlor ug/L O.ooB to o.a ----- U U U U U <br /> Heptachlor epoxide N9/L o.ooa to o.z _____ U U U U U <br /> Methoxychlor pg/L 35 to 40 ----- U U U U U <br /> Toxaptiene Ng/L 0.032 to 3 ----- U U U U U <br />Secondary Drinking Water Standards -Suggested Limits by CDPHE. The secondary maximum contaminant <br />levels are not enforceable, but are intended as guidelines. <br />' Colorado Department of Public Health and Environment (CDPHE) maximum contaminant level (MCL) for <br />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 />laboratory results shown in RED HIGHLIGHT exceed MCL or suggested limits <br />