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TABLE 2 t <br /> SUMMARY OF PRE-EXCAVATION INVESTIGATION SOIL ANALYTICAL RESULTS(PAHs) <br /> TRACY PUMP STATION <br /> Tracy,San Joaquin County,California <br /> Concentrations it mgtkg <br /> v �+ <br /> m A 4 y u , y y i <br /> 04 -Z <br /> Sample 4 <br /> y fi <br /> Depth ❑ Cy 4 a t7 it " m s. <br /> +ter rv ' <br /> Sorin ID (feet b s Sampled ¢' V � o� � 4� � M <br /> SB-41 7 5/25/201.1 2.1 0.58 2 1.0000 0.39 0.17 0.14 <0.16 1.5 B <0.16 0.52 3.3 0.061 6.7 <0.062 0.11 2.9 2200 <br /> 5B 41 8 5/25/2011 0.017 0.0045 0.015 0.0071 0.0027 0.0011 1 0.001 <0.0012 0.011 <0.0012 0.004 0.029 0.00035 0.088 <0.00049 0.0012 0.022 0.016 <br /> SB-42 9.5 5/25/2011 <0.00053 <0.00053 <0.00053 <0.00053 <0.00053 <0.0013 <0.00053 <0.0013 0.00033 J,B <0.0013 0.00038 J <0.00053 <0.0013 <0.00053 <0.00053 <0.00053 0.00058 0.0066 <br /> SB-43 9 5/25/2011 0.0015 0.00038 J 0.0025 0.0033 0.0017 0.00082 J 0.00072 <0.0013 0.0048 B <0.0013 0.0014 0.003 <Q0013 0.0036 0.0051 0.0019 0.012 0.01 <br /> SB-44 3 5/26/2011 <0.00051 <0.00051 <0.00051 <0.00051 <0.00051 <0.0013 <0.00051 <0.0013 <0.00051 <0.0013 <0.00051 0.00076 40.0013 0.011 0.024 0.016 0.00029 J <0.00051 <br /> 4 5/26/2011 <0.010 <0.010 0.0089 J 0.0056 J 0.0092 J <0.026 0.040 <0.026 0.020 <0.026 0.0087 <0.010 <0.026 0 011 0.033 0 0098 0.023 0.012 <br /> < 9 ..: <br /> SB-45 6 5/26/2011 0.72 40.070 0 49 1.4 <0 070 <0.18 <0 070 <0.18 4.4 <018 064 3.1 018 5 2 8$ 14 81 2 <br /> 9 5/26/2011 <0.00051 <0.00051 1 <0.00051 <0.00051 <0.00051 <0.0013 <0.00051 <0.0013 <0.00051 <0.0013 <0.00051 <0.00051 <0.0013 0.0011 0.0025 0.0013 <0.00051 0.0016 <br /> SB46 5 5/26/2011 <0.00052 <0.00052 <0.00052 <0.00052 <0.00052 <0.0013 <0.00052 <0.0013 <0.00052 <0.0013 <0.00052 <0.00052 <0.0013 <0.00052 <0.00052 <0.00052 <0.00052 -0.00052 <br /> SB-47 3 5126/2011 <0.00095 <0.00095 0.0011 0.0006 J <0.00095 <0.0024 0.0025 <0.0024 0.0015 B <0.0024 0.00087 J <0.00095 <0.0024 0.0007 J 0.0019 0.0017 0.0016 0.001 <br /> SB48 5 5/26/2011 <0.00049 <0.00049 <0.00049 <0.00049 <0.00049 <0.0012 <0.00049 <0.0012 <0.00049 <0.0012 <0.00049 <0.00049 <0A012 <0.00049 <0.00049 <0.00049 <0.00049 <0.00049 <br /> SB-49 3 5/26/2011 <0.00050 <0.00050 <0.00050 <0.00050 <0.00050 <0.0012 <0.00050 <0.0012 <0.00050 <0.0012 1 <0.00050 <0.00050 <0.0012 0.0003 J 0.00058 0.00032 J <0.00050 <0.00050 <br /> Abbreviations: ]Totes: <br /> B=Analyte was present in the associated method blank L Samples were collected by SAIC and analyzed by Calscience Environmental Laboratories,Inc.for PAHs using EPA Method 8270C with SIM. <br /> bgs=Below ground surface 2. See Appendix D for data usability summary. <br /> EPA=United States Environmental Protection Agency 3. Results in bold exceed RSLs and/or ESLs. <br /> CSL=Environmental Screening Level 4. RSL risk-based screening level for protection of groundwater. <br /> ID=Identification 5. ESL Groundwater Protection(Soil Leaching). <br /> J=Estimated concentration detected between MDL and LOQ 6. ESL Direct Exposure(Human Health)Residential Land Use. <br /> LOQ=Limit of Quantitation <br /> MDL=Method Detection Limit Sources: <br /> mg/kg=Milligrams per kilogram RSLs from EPA Regional Sereening Levels for Chendeal Contaminants at Superfratd Sites, September 2008. <br /> PAHs=Polynuclear aromatic hydrocarbons ESLs from the San Francisco Bay RWQCB Screening for Environmental Concerns at Sites with Contaminated Soil and Groun&vater (Interim Final May 2008). <br /> RSL W Regional Screening Level <br /> RWQCB=Regional Water Quality Control Board <br /> SAIL=SAW Energy,Environment&lnfirastructure,LLC <br /> SIM=Selective ion monitoring <br /> <=Denotes analyte not detected at or above the laboratory LOQ <br /> ---=Not available <br /> Page 2 of 2 <br />