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i• <br />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-06 <br /> Parameters Units CDPHE'~~ Oct-05 Nov-05 Dec-05 Apr-06 Jul-06 Oct-06 <br />~ Methyl-t-butyl ether Ng/L ----- ----- U U U U U <br />, <br />.~ N Benzene Ng/L 5 ----- U U U 1.7 U <br />° u <br />> •E <br />Toluene <br />pg/L <br />t,o00 <br />----- U U U U U <br />U ~ <br />~~ <br />Ethylbenzene <br />Ng/L <br />700 <br />----- <br />U <br />U <br />U <br />U <br />U <br />° O m,p-Xylene {~g/L ,aoo ro to,o ----- U U U U U <br />Q <br />o-Xylene <br />Ng/L <br />.aoo ro to,oo <br />----- <br />U <br />U <br />U <br />U <br />U <br /> Aldrin pg/L ----- ----- U U U U U <br /> a-BHC uglL ----- ----- U U U U U <br /> b-BHC pg/L -- ----- U U U U U <br /> d-BHC NglL ----- ----- U U U U U <br /> g-BHC pg/L ----- ---- U U U U U <br /> a-Chlordane pg/L o.~o to 2 ----- U U U U U <br /> g-Chlordane Ng/L o.1o to 2 ----- U U U U U <br />~ 4,4'-DDD uglL o.t5 ----- U U U U U <br /> 4,4'-DDE Ng/L o.1 ------ U U U U U <br />j 4'-DDT <br />4 Ng/L 0-~ _____ U U U U U <br />~ , <br />~ Dieldrin pg/L 0.002 ----- U U U U U <br />~ Endosulfan I Ng/L a2 ----- U U U U U <br />o Endosulfan II Ng/L a2 ----- U U U U U <br /> Endosulfan sulfate Ng/L a2 ---- U U U U U <br />O Endrin pg/L 2 ----- U U U U U <br /> Endrin aldehyde Ng1L 2.t ----- U U U U U <br /> Endrin ketone Ng/L -- ----- U U U U U <br /> Heptachlor NglL 0.008 to o.a ----- U U U U U <br /> Heptachlor epoxide pg/L o.ooa to 0.2 .__. U U U U U <br /> Methoxychlor pg/L 35 to ao ----- U U U U U <br /> Toxaphene Ng/L 0.032 to 3 ----- U U U U U <br />Secondary Drinking Water Standards -Suggested Limits by CDPHE. The secondary maximum contaminant levels are <br />not enforceable, but are intended as guidelines. <br />' Colorado Department of Public Health and Environment (CDPHE) maximum contaminant level (MCL) for Drinking Wat <br />`Colorado Department of Public Health and Environment (CDPHE) standards for groundwater <br />Lalx~ratory results shown in P.ED HIGHLIGH-i- r x.~eeri MCl_ or suctgested limits <br />