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i 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-01 <br /> Parameters Units CDPHE'•z 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 />o N Benzene ug/L 5 ---- U U U U U <br />> ~ Toluene Ug/L ~,ooo ----- U U U U U <br />U <br />A~ <br />Ethylbenzene <br />uglL <br />700 <br />----- <br />U <br />U <br />U <br />U <br />U <br />o <br />Q m,p-Xylene pg/L ,aoo ro ~o,o ----- U U U U U <br /> o-Xylene pg/L ,aoo ro ~o, ----- U U U U U <br /> Aldrin Ny/L -- ----- U U U U U <br /> a-BHC Ng/L - ---- U U U U U <br /> b-BHC pg/L - -- --- U U U U U <br /> d-BHC Ng/L -- -- -- U U U U U <br /> g-BHC Ng/L - ----- U U U U U <br /> a-Chlordane pg/L o.~o to 2 ----- U U U U lJ <br />NN g-Chlordane pg/L o.1o to 2 ----- U U U U U <br />O 4,4'-DDD Ng/L o.15 ----- U U U U U <br />E 4,4'-DDE pg/L o.i ----- U U U U U <br /> <br />~j 4,4'-DDT N9/L o.1 ____ U U U U U <br />~ Dieldrin uglL o.ooz ---- U U U U lJ <br />o Endosulfan I Ng/L 42 ----- U U U U U <br />o Endosulfan II pg/L 42 ----- U U U U U <br /> Endosulfan sulfate trg/L 42 ----- U U U U U <br />O Endrin pg/L 2 ----- U U U U U <br /> Endrin aldehyde pg/L 2.t ----- U U U U ll <br /> Endrin ketone ug/L - ----- U U U U U <br /> Heptachlor NgIL o.oos to o.a ----- U U U U U <br /> Heptachlor epoxide Ug/L O.oo4 to 0.2 _____ U U U U U <br /> Methoxychlor Ng/L 35 to 40 ----- U U U U U <br /> Toxaphene Ng1L 0.032 to s ----- 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 />• 'Dissolved Metals during the Nov. and Dec. 2005 Sampling Events. <br />' Laboratory results shown in RED HIGHLIGHT exceed MCL or suggested limits <br />