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Table 1. Groundwater Cleanup Criteria, 1904 Charter Way, Stockton <br /> Water Highest Background Analytical Range of <br /> Parameter Units Quality Basis for Limit Detections in <br /> water Concentration Quantition Limit Cleanup Levels <br /> Limits Ground <br /> Volatile Compounds <br /> 1,1,2-Trichloroethane ug/L 0.49 Cal/EPA Cancer Potency Factor 0.9- 1.9 <05 0.5 0.49-0.5 <br /> 1,2-Dichloroethane ug/L 0.4 OEHHA Public Health Goal 1.8-4.3 <05 _ 0.5 0.4-0.5 <br /> 1,2-Dichloropropane ug/L 0.5 OEHHA Public Health Goal 250-640 <0.5 0.5 0.5 <br /> 1,4-Dichlorobenzene ug/L 5 Calif.DHS Primary MCL 0.3-1.2 <0.5 0.5 0.5-5 <br /> Chlorobenzene ug/L 20 Taste and Odor(USEPA NRWQC) 4.4-5.5 <0.5 0.5 _ 0.5-20 <br /> Chloroform ug/L 1.1 Cal/EPA Cancer Potency Factor 0.6-3.2 <0.5 _ _ 0.5 - 0.5-1.1 <br /> Dichlorodifluoromethane ug/L 1,000 Calif.DHS State Action Level 22-43 <0.5 0.5 0.5-1000 <br /> Tetrachloroethene(PCE) _. ug/L 0.06 OEHHA Public Health Goal 0.7-2.2 <0.5 0.5 0.06-0.5 <br /> Trichloroethene(TCE) ug/L 0.8 OEHHA Public Health Goal 1.9-3 <0.5 0.5 _ 0.5-0.8 <br /> • Trichlorofluoromethane ug/L 150 Calif.DHS Primary MCL _ 2.1 -7.9 <0.5 0.5 0.5-150 <br /> Trichlorotrifluoroethane ug/L 1,200 Calif.DHS Primary MCL 9.3-15 <0.5 0.5 0.5-1200 <br /> Fumigants <br /> 1,2,3-Trichloropropane ug/L 0.005 Calif.DHS State Action Level 4.8-7.3 <0.005 0.005 0.005 <br /> DBCP ug/L 0.0017 OEHHA Public Health Goal 60-170 <0.01 0.01 0.0017-0.01 <br /> EDB ug/L 0.0097 Cal/EPA Cancer Potency Factor 0.04-0.34 <0.02 0.02 0.0097-0.02 <br /> Chlorinated Herbicides <br /> 2,4,5-T ug/L 70 USEPA IRIS Reference Dose 2.1 -3.1 <0.1 0.1 0.1 -70 <br /> 2,4-D ug/L 70 Calif.DHS Primary MCL 2.8-51 <0.5 0.5 0.5-70 <br /> Dicamba ug/L 210 USEPA IRIS Reference Dose 0.3-0.66 <0.1 0.1 0.1 -210 <br /> Dinoseb ug/L 7 Calif.DHS Primary MCL 640-1,300 <0.25 0.25 0.25-7 <br /> Organo-Phosphate Pesticides <br /> Fensulfothion ug/L NA No Water Quality Limit Available 25-43 <0.5 0.5 0.5 <br /> r Mevinphos ug/L NA No Water Quality Limit Available 27- 140 <0.5 0.5 0.5 <br /> Triazine Pesticides <br /> Atrazine ug/L 0.15 OEHHA Public Health Goal 11.0- 16.0 <0.5 0.5 0.15-0.5 <br /> Simazine ug/L 4 Calif.DHS Primary MCL 2-8.8 <0.5 0.5 0.5-4 <br /> Carbamate/Urea Compounds <br /> Bromacil ug/L 90 USEPA Drinking Water Health Advisory 120-180 < 1 1 1 -90 <br /> Diumn ug/L 14 USEPA IRIS Reference Dose 5.0-11 < 1 1 1 -14 <br /> Tebuthiumn ug/L 490 USEPA IRIS Reference Dose 3.1 -6.2 <1 1 1 -490 <br /> General Chemistry <br /> Ammonia mg/L 1.5 Taste and Odor Threshold 300-580 <0.5 0.5 0.5-1.5 <br /> Chloride mg/L 106 Agricultural Water Quality 800-1100 30-55 10 30- 106 <br /> Nitrate(as N) mg/L 10 Calif.DHS Primary MCL 600-736 <0.2 0.2 0.2-10 <br /> Total Kjeldahl Nitrogen(TKN) m /L 10 Calif.DHS Primary MCL for Nitrate 200-360 <OS 0.5 0.5- 10 <br /> Five highest detections during the period 3/95 to 8/02 <br /> Background concentrations measured from upgradient monitoring well MW-16 between 7/97 and 7/02 <br /> a Cleanup goals range from Analytical Quantitation Limit to Water Quality Limit,or from background to Water Quality Limit, <br /> it background is greater than Analytical Quantitation Limit <br /> 2,4,5-T 2,4,5-Trichlorophenoxyacetic acid Cal/EPA California Environmental Protection Agency <br /> 2,4-D 2,4-Dichlorophenoxyacetic acid DHS California Department of Health Services <br /> DBCP 1,2-Dibromo-3-chloropropane MCL Maximum Contaminal Level <br /> EDB 1,2-Dibromoethane OEHHA Office of Environmental and Health Hazard Assessment <br /> NA Not Available USEPA U.S.Environmental Protection Agency <br /> NRWQC National Recommended Water Quality Criteria <br /> 21 January 2003 <br />