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1 SAP/QAPP Addendum <br /> O Lodi-125 N Stockton <br /> Final <br /> March 24,2025 <br /> SITE-SPECIFIC QAPP WORKSHEET #15 <br /> PROJECT SCREENING LEVELS AND LABORATORY-SPECIFIC DETECTION/QUANTITATION LIMITS <br /> VOCs in Soil Gas <br /> CAS Project Screening Levels (µ /m3 a Laboratory <br /> Analyte Number EPA VISLh RWQCB Tier 1 ESL Reporting Limit <br /> Commercial Soil Gas Residential Soil Gasf (µg/m3)c <br /> 1,1,1-Trichloroethane 71-55-6 730,000 174,000 34,700 5.9 <br /> 1,1,2,2-Tetrachloroethane 79-34-5 7.05 1.61 1.6 7.4 <br /> 1,1,2-Trichloroethane 79-00-5 25.6 5.85 5.8 5.9 <br /> 1,1-Dichloroethane 75-34-3 256 58.5 58.5 4.4 <br /> 1,1-Dichloroethene 75-35-4 578 138 2,400 4.4 <br /> 1,2,4-Trichlorobenzene 120-82-1 292 69.5 69.5 32 <br /> 1,2-Dibromoethane 106-93-4 0.681 0.156 0.16 8.3 <br /> 1,2-Dichlorobenzene 95-50-1 29,200 6,950 6,950 6.6 <br /> 1,2-Dichloroethane 107-06-2 15.7 3.6 3.6 4.4 <br /> 1,2-Dichloro ro ane 78-87-5 110 25.3 9.4 5.0 <br /> 1,3,5-Trimeth lbenzene 108-67-8 8,760 2,090 NC 5.3 <br /> 1,3-Butadiene 106-99-0 13.6 3.12 NC 2.4 <br /> 1,3-Dichlorobenzene 541-73-1 NC NC NC 6.6 <br /> 1,4-Dichlorobenzene 106-46-7 37.2 8.51 8.5 6.6 <br /> 1,4-Dioxane 123-91-1 81.8 18.7 12.2 2.3 <br /> 2-Butanone 78-93-3 730,000 174,000 173,800 12.9 <br /> 2-Hexanone 591-78-6 4,380 1,040 NC 18 <br /> 4-Meth 1-2- entanone 108-10-1 438,000 104,000 14,000 4.4 <br /> Acetone 67-64-1 NC NC 1,028,700 26.3 <br /> Benzene 71-43-2 52.4 12 3.2 3.5 <br /> romodichloromethane 75-27-4 11 2.53 2.5 7.3 <br /> romoform 75-25-2 372 85.1 85.1 11.4 <br /> romomethane 74-83-9 730 174 174 8.5 <br /> Carbon disulfide 75-15-0 102,000 24,300 NC 13.6 <br /> Carbon tetrachloride 56-23-5 68.1 15.6 15.6 6.8 <br /> Chlorobenzene 108-90-7 7,300 1,740 1700 5.0 <br /> 34 <br />