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Ryegrass Limited Purpose landfill and Balefill Closed Landfill <br />Groundwater and Leachate Sampling and Analysis Plan <br />Qittitas County Solid Waste <br />Table 5. Methods and Quantitation Limits for Analysis of Groundwater (continued) <br />Gfoundwater <br />units <br />(Meawd <br />A) MCL GWqs <br />Vdade O►gertlos (cananued) <br />trans-1,4-Dichlorc-2-butene <br />ug/L <br />EPA 8260D <br />1.0 <br />Trichloroethene <br />ug/L <br />EPA 8260D <br />0.20 5 3 *** <br />Trichlorofluoromethane <br />ug/L <br />EPA 8260D <br />0.20 <br />Vinyl Acetate <br />ug/L <br />EPA 8260D <br />1.0 <br />Vinyl Chloride <br />ug/L <br />EPA 8260D SIM <br />0.020 2 * 0.02 *** <br />GWQS = Water Quality Standards for Ground Waters of the State of Washington (WAC 173-200) <br />MCL= Maximum Contaminant Level, State Drinking Water Regulations (WAC 246-290) <br />MTCA= Model Toxics Control Act (WAC 173.340) Method ACleanup Level <br />* = Primary <br />•' =Secondary <br />••• =Carcinogen <br />XYL = Primary MCL for the sum of all xylenes <br />THM = Primary MCL for the sum of all trihalomethanes <br />April 2024 1 553-1763-010 T-6 <br />Revised May 2024 <br />