2008-12-17_HYDROLOGY - M2004078 (6)

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Lupton Lakes Gravel Mine - Ft. Lupton Colorado 2008 Water Quality Monitoring Groundwater aualitV mnnitnrinn as mmi drPri by tha rlivicinn of NAincarolc onel r?.onlnnw Dcrmit -tne_,3nnds7a limits b by 2007 Proposed CRMW16 Parameters Units CDPH15"2 Baseline Levels Jan-08 Apr-08 Jul-08 Oct-08 Methyl-t-butyl ether Ng/L -- °-' o N Benzene ? Q Toluene pg/L 1,000 --- -- - --- --- ---- Ethylbenzene pg/L 700 ---- O m,p-Xylene Ng/L 400 to 10,0 o-Xylene Ng/L ,400 to 10,0 1 ---- Xylene (Total) Ng/L ,400 to 10,0 Aldrin Ng/L ----- ---- --- ---- ---- --- a-BHC pg/L ---- -- --- --- --- b-BHC Ng/L --- d-BHC pg/L --- ---- - --- - -- ---- g-BHC Ng/L ---- -- --- -- - ---- Chlordane (Technical) Ng/L -- ---- --- ---- - -- a-Chlordane Ng/L 0.10 to 2 --- --- -- - -- -- g-Chlordane pg/L 0.15 4,4'-DDD pg/L 0.1 _- 4,4'-DDE pg/L 0.1 ---- -- -- --- --- 4,4'-DDT pg/L 0.002 ---- - -- --- -- Dieldrin Ng/L 42 ---- -- -- -- - --- c Endosulfan I pg/L 42 _- 5 Endosulfan II pg/L 42 p Endosulfan sulfate Ng/L 2 Endrin Ng/L 2.1 ---- --- -- -°- ---- Endrin aldehyde pg/L 0.008 to 0.4 ---- - -- - --- Endrin ketone pg/L 0.004 to 0.2 ---- -- ---- --- Heptachlor pg/L 35 to 40 ?" - - - ' '-' '?- Heptachlor epoxide Ng/L 0.032 to 3 --- -- -- -- Methoxychlor pg/L 35 to 40 Toxaphene Ng/L 0.032 to 3 --- -- -- --- ---- Jeconaary LinnKing water 5tanaaras - Juggestea Limits Dy L;L)VHt. i ne seconaary maximum contaminant levels are not enforceable, but are intended as guidelines. 1 Colorado Department of Public Health and Environment (CDPHE) maximum contaminant level (MCL) for Drinking Water 2 Colorado Department of Public Health and Environment (CDPHE) standards for groundwater 3 Dissolved Metals during the Nov. and Dec. 2005 Sampling Events. *Laboratory results shown in RED HIGHLIGHT exceed MCL or suggested limits