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TABLE I <br />SUMMARY OF FIELD SCREENING AND LABORATORY ANALYTICAL DATA <br />SOIL GAS MONITORING WELLS SGMWl AND SGMW2 <br />APPROXIMATE 48 -ACRE MURPHY PARKWAY PROPERTY <br />17100 Murphy Parkway, Lathrop, California <br />Brusca File No. 137-002 <br />Note: ND = Not detected at concentrations above the laboratory reporting limits. <br />N/A = Screening value not established <br />FIELD SCREENING <br />LABORATORY TESTING <br />Methane and Fixed Gases by ASTM <br />Volatile Organic Compounds <br />(VOCs) by EPA <br />Method <br />D1946 <br />Method TO -15 <br />Oth <br />Soil Gas <br />Carbon <br />Carbon <br />VO s <br />Monitoring <br />Hydrogen <br />Carbon <br />Methane <br />Oxygen <br />Dioxide <br />Nitrogen <br />Disulfide <br />Chloroform <br />Benzene <br />(see lab <br />Well <br />Date <br />Sulfide <br />Dioxide <br />Oxygen <br />Methane <br />(%) <br />(%) <br />(%) <br />(%) <br />(ug/m3) <br />(ug/m3) <br />(ug/m3) <br />report) <br />1/26/2018 <br />0.0 ppm <br />0.0 ppm <br />20.3% <br />0.0% <br /><0.00023 <br />20 <br />1.0 <br />79 <br />17 <br />20 <br /><3.6 <br />ND <br />2/16/2018 <br />0.0 ppm <br />0.0 ppm <br />19.4% <br />0.0% <br /><0.00023 <br />19 <br />1.3 <br />80 <br /><14 <br /><5.5 <br /><3.6 <br />ND <br />SGMWl <br />3/19/2018 <br />0.0 ppm <br />8.0 ppm <br />18.7% <br />0.0% <br />0.00026 <br />19 <br />1.3 <br />80 <br /><14 <br /><5.3 <br /><3.5 <br />ND <br />4/17/2018 <br />0.0 ppm <br />1.4% <br />19.5% <br />0.0% <br />0.00022 <br />19 <br />1.2 <br />80 <br />17 <br /><5.1 <br />4.7 <br />ND <br />1/26/2018 <br />0.0 ppm <br />0.0 ppm <br />19.2% <br />0.0% <br /><0.00023 <br />21 <br />0.3 <br />79 <br /><14 <br /><5.7 <br /><3.7 <br />ND <br />2/16/2018 <br />0.0 ppm <br />0.0 ppm <br />19.4% <br />0.0% <br /><0.00023 <br />19 <br />1.2 <br />80 <br /><14 <br /><5.3 <br /><3.5 <br />ND <br />SGMW2 <br />3/19/2018 <br />0.0 ppm <br />15 ppm <br />18.5% <br />0.0% <br /><0.00021 <br />18 <br />1.4 <br />81 <br /><13 <br /><5.2 <br /><3.4 <br />ND <br />4/17/2018 <br />0.0 ppm <br />2.1% <br />18.5% <br />0/0% <br /><0.00022 <br />19 <br />2.0 <br />79 <br /><14 <br /><5.4 <br /><3.5 <br />N <br />SCREENING <br />VALUES <br />Title 27 California Code of Regulations (27 CCR) Section 20921 <br />5% <br />5% <br />(methane concentration at facility boundary) <br />DTSC-modified Screening Levels (DTSC SLs); January 2018; <br />N/A <br />N/A <br />420 ug/m3 <br />commercial/industrial Air, modified by attenuation factor of 0.001 <br />USEPA Regional Screening Levels (RSLs); November 2017;s <br />3,100,000 ug/m <br />s <br />530 ug/m <br />s <br />1,600 ug/m <br />Industrial Air, modified by attenuation factor of 0.001 <br />San Francisco Bay Regional Water Quality Control Board <br />Environmental Screening Levels (ESL); February 2016- <br />; <br />530 ug/m3 <br />420 ug/m3 <br />Commercial/Industrial Soil Gas <br />Note: ND = Not detected at concentrations above the laboratory reporting limits. <br />N/A = Screening value not established <br />