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TABLE 4 <br /> SUMMARY OF GROUNDWATER ANALYTICAL RESULTS (PAHs) <br /> US CAN-WELTY ROAD <br /> Vernalis, San Joaquin County, California <br /> Concentrations inµg/L <br /> S4 �c <br /> .IS r q <br /> Boring/ Collection Date <br /> u u 4 a, v as as v v $ �? <br /> Well ID Method Sampled Q' 4 Q' 41 41 W W W U q w 1.14 <br /> SCREENING WQO 20 4 --- 2,100 5 0.04 5 0.0029 5 0.04 5 --- 0.04 5 0.4 5 0.0038 5 130 4 280 5 0.04 5 17 4 --- 210 <br /> LEVELS ESL 20 6 30 7 0.73 7 0.027 7 0.014 7 0.029 7 0.10 7 0.029 8 0.35 7 0.0048 8 8 7 3.9 7 0.048 7 17 8 4.6 7 2 7 <br /> SB-18-W B 8/11/2008 0.63 <0.020 0.048 <0.030 <0.030 <0.030 <0.040 <0.030 0.025 <0.030 0.47 0.29 <0.040 0.29 0.47 0.048 <br /> SB-19-W B 8/12/2008 <0.030 <0.020 <0.030 <0.030 <0.030 <0.030 <0.040 <0.030 <0.020 <0.030 <0.030 0.11 <0.040 0.54 0.11 <0.030 <br /> SB-22-W ggw 8/13/2008 0.068 E <0.030 0.049 E 0.049 <0.030 <0.030 E <0.040 <0.030 0.13 <0.030 0.062 E 0.38 <0.040 0.32 E 0.48 0.064 E <br /> SB-22-WD ggw 8/13/2008 0.11 E <0.040 0.063 E 0.051 <0.030 0.037 E <0.040 <0.030 0.15 <0.030 0.087 E 0.45 <0.040 0.46 E 0.57 0.095 E <br /> SB-23-W ggw 8/14/2008 18 <7.0 <0.60 1 7.3 2.5 3.1 <0.80 <0.60 24 0.90 8.1 100 <0.80 <0.60 200 1 13 <br /> SB-24B-W ggw 8/14/2008 0.44 <0.20 1.1 0.74 <0.30 0.42 <0.40 <0.30 3.2 <0.30 0.97 1.3 <0.40 1.8 1.5 2.1 <br /> SB-25-W ggw 8/18/2008 0.075 0.026 0.086 0.033 0.019 <0.015 <0.020 <0.015 0.067 <0.015 0.075 0.091 <0.020 0.11 0.13 0.073 <br /> SB-26-W DD; 82 8/15/2008 <0.010 <0.010 <0.010 E <0.010 <0.0060 E <0.010 <0.010 E <0.010 E <0.010 <0.0060 E 0.012 0.027 <0.010 E 0.19 E 0.035 <0.010 <br /> SB-27-W ggw 8/18/2008 <0.015 <0.010 <0.015 <0.015 <0.015 0.017 <0.020 <0.015 0.013 <0.015 0.036 0.017 <0.020 0.14 0.070 0.024 <br /> SB-29-W ggw 11/20/2008 6.5 <0.20 2.7 1.2 <0.30 1.3 0.58 <0.30 5.4 0.32 2.3 28 <0.40 14 45 3.4 <br /> SB-30-W ggw 11/21/2008 <0.010 <0.010 <0.010 E <0.010 <0.0030 E <0.010 <0.010 E <0.010 <0.010 <0.0030 E <0.010 0.035 <0.010 E <0.050 <0.010 <0.010 <br /> SB-32-W ggw 11/21/2008 <0.010 <0.010 <0.010 <0.010 <0.0030 <0.010 <0.010 <0.010 <0.010 <0.0030 <0.010 0.020 <0.010 <0.050 <0.010 <0.010 <br /> SB-33-W ggw 11/21/2008 <0.010 <0.010 <0.010 <0.010 <0.0030 <0.010 <0.010 <0.010 <0.010 <0.0030 <0.010 0.025 <0.010 0.067 E <0.010 <0.010 <br /> SB-35-W ggw 11/24/2008 0.069 0.013 <0.010 <0.010 <0.0030 <0.010 <0.010 <0.010 <0.010 <0.0030 <0.010 0.025 <0.010 0.17 0.018 E <0.010 <br /> SB-36-W ggw 11/24/2008 <0.010 <0.010 <0.010 <0.010 <0.0030 <0.010 <0.010 <0.010 <0.010 <0.0030 <0.010 0.039 <0.010 0.052 <0.010 <0.010 <br /> SB-37-W ggw 11/20/2008 <0.030 E 0.027 E <0.030 <0.030 <0.030 <0.030 <0.040 <0.030 <0.020 <0.030 <0.030 <0.030 E <0.040 0.32 0.073 <0.030 <br /> SB-37-WD ggw 11/20/2008 1 0.046E 1 0.055E 1 <0.030 <0.030 <0.030 <0.030 <0.040 1 <0.030 1 <0.020 <0.030 1 <0.030 1 0.042E 1 <0.040 1 0.37 0.079 <0.030 <br /> SB-42-W ggw 3/5/2009 0.012 0.012 <0.010 0.010 E 0.011 E 0.012 E <0.010 0.013 E 0.012 E 0.0089 E <0.010 0.033 <0.010 0.15E 1 0.015 1 <0.010 E <br /> SB-42-WD ggw 3/5/2009 0.011 <0.010 <0.010 <0.010 E <0.0030 E <0.010 E <0.010 <0.010 E I <0.010 E <0.0030 E <0.010 0.032 <0.010 0.19 E 0.020 0.013 E <br /> Abbreviations: Notes: <br /> B=Bailer 1.PAHs were analyzed by Lancaster Laboratories,Inc.,using EPA Method 8270C SIM or LVI. The QC limits for PAHs and <br /> Cal/EPA=California Environmental Protection Agency surrogate standard recoveries by LVI GC/MS are advisory only until sufficient data points can be obtained to calculate <br /> D=Duplicate Sample statistical limits. <br /> DD=Depth discrete;feet below ground surface 2.Results in bold exceed WQOs and/or ESLs. <br /> E=Estimated value based on surrogate recovery levels 3.See Appendix E.1 for data usability summary. <br /> EPA=U.S.Environmental Protection Agency 4.WQO-Taste and Odor(EPA National Recommended Ambient Water Quality Criteria). <br /> ESL=Environmental Screening Level 5.WQO-Toxicity(EPA IRIS Reference Dose as a Drinking Water Level). <br /> GC/MS=Gas chromatography/mass spectrometry 6. ESL-Taste and Odor(Ceiling Value). <br /> ggw =Grab groundwater 7. ESL-Aquatic Habitat Goal. <br /> ID=Identification 8. ESL-Toxicity(Drinking Water). <br /> IRIS=Integrated Risk Information System <br /> LVI=Large-volume injection Sources: <br /> PAHs=Polynuclear aromatic hydrocarbons WQOs defined in Water Quality Control Plan(Basin Plan)for the California Regional Water Quality Control Board, Central <br /> QC=Quality control Valley Region,Fourth Edition,January 2007. WQOs may be stated in either numerical or narrative form. Narrative WQOs <br /> RWQCB=Regional Water Quality Control Board are interpreted by values from RWQCB A Compilation of Water Quality Goals-July 2008 . <br /> SIM=Selective ion monitoring ESLs from the San Francisco Bay RWQCB Screening for Environmental Concerns at Sites with Contaminated Soil and Groundwater <br /> WQO=Water Quality Objective (Interim Final May 2008). <br /> <=Denotes analyte not detected at or above the laboratory reporting limit <br /> µg/L=Micrograms per liter <br /> ZZ <br /> From Seance to S Ww ns <br /> Page 1 of 1 <br />