2008-12-17_HYDROLOGY - M2004078 (6)

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Lupton Lakes Gravel Mine - Ft. Lupton Colorado 2008 Water Quality Monitoring Groundwater aualltv monitorina as required by the Division of Minerals and Geoinav Permit #M-2n04-078 limits by CRMW02 Parameters Units CDPHE' 2 Baseline Levels Jan-08 Apr-08 Jul-08 Oct-08 Methyl-t-butyl ether Ng/L _W. Benzene l,g/L 5 ---- - -- --- - tD N Toluene Ng/L 1,000 Ethylbenzene Ng/L 700 O m,p-Xylene Ng/L 4oo to 10,00 -~- ---- '- -- ---- o-Xylene Ng/L ,400 to 10,0 ---- --- ---- ---- -- Xylene (Total) pg/L AN to 10,00 ---- -- -_ _? ___ Aldrin Ng/L ?- ---- --- -- _-- --- a-BHC Ng/L ---- --- - ---- - - b-BHC pg/L ---- -- ---- ---- --- d-BHC pg/L g-BHC N9/L Chlordane (Technical) Ng/L --- ---- - ---- ---- - -- N a-Chlordane pg/L 0.10 to 2 ---- -- - ---- --- 13 g-Chlordane PA 0.15 ---- -" ' - - - - C 4,4'-DDD pg/L 0.1 ---- 0 4,4'-DDE Ng/L 0.1 m e 4,4'-DDT pg/L 0.002 ---- -- -- --- -- o Dieldrin Ng/L 42 -~- '-' -' -- - -- o Endosulfan I ug/L 42 ---- ' ' - - - - a Endosulfan II Ng/L 42 ---- ---- -- - - - --- 0 Endosulfan sulfate Ng/L 2 ~-- - -- -- --- Endrin Ng/L 2.1 ---- --- '--- ---- --' Endrin aldehyde pg/L 0.008 to 0.4 ---- - -- ---- --- Endrin ketone Ng/L 0.004 to 0.2 ---- --- --- ---- --- Heptachlor pg/L 35 to 40 --- Heptachlor epoxide pg/L 0.032 to 3 -- -- -- -- -- Methoxychlor pg/L 35 to 40 -- ---- ---- ---- ---- Toxaphene pg/L 0.032 to 3 - - - -- _w ___ Secondary Drinking Water Standards - Suggested Limits by GDPHE. The secondary 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 *Laboratory results shown in RED HIGHLIGHT exceed MCL or suggested limits