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Methane (%) Oxygen (%) Carbon Dioxide (%) Nitrogen (%) Carbon Disulfide (ug/m3) Chloroform (ug/m3) Tetra- hydrofura n (ug/m3) 1,4- Dichloro- benzene (ug/m3) Benzene (ug/m3) Heptane (ug/m3) Toluene (ug/m3) Xylenes (ug/m3) Acetone (ug/m3) Other VOCs (see lab report) 1/26/2018 0.0 ppm 0.0 ppm 20.3%0.0%<0.00023 20 1.0 79 17 20 <3.4 <6.9 <3.6 <4.7 <4.3 <5.0 <27 ND 2/16/2018 0.0 ppm 0.0 ppm 19.4%0.0%<0.00023 19 1.3 80 <14 <5.5 <3.3 <6.8 <3.6 <4.6 <4.3 <4.9 <27 ND 3/19/2018 0.0 ppm 8.0 ppm 18.7%0.0%0.00026 19 1.3 80 <14 <5.3 <3.2 <6.5 <3.5 <4.4 <4.1 <4.7 <26 ND 4/17/2018 0.0 ppm 1.4%19.5%0.0%0.00022 19 1.2 80 17 <5.1 <3.1 <6.2 4.7 <4.3 <3.9 <4.5 <25 ND 5/14/2018 0.0 ppm 0.0 ppm 20.9%0.0%0.00028 20 1.1 79 60 <5.7 <3.4 <7.0 <3.7 <4.8 <4.4 <5.1 80 ND 6/5/2018 0.0 ppm 1.1%19.9%0.0%0.00028 20 1.0 79 34 <5.7 <3.4 <7.0 <3.7 <4.8 <4.4 <5.0 110 ND 7/16/2018 0.0 ppm 0%19.9%0.0%0.0011 20 0.53 79 110 <5.9 <3.6 <7.3 4.0 7.3 8.2 7.3 79 ND 8/27/2018 9/18/2018 0.0 ppm 0.0 ppm 19.7%0.0%<0.00024 19 1.0 80 <15 6.9 <3.5 <7.2 <3.8 <4.9 <4.5 <5.2 42 ND 10/12/2018 0.0 ppm 0.0 ppm 18.8%0.0%<0.00023 19 1.3 80 <14 <5.6 <3.4 <6.9 <3.7 <4.7 <4.3 <5.0 51 ND 11/20/2018 0.0 ppm 0.0 ppm 18.5%0.0%0.00023 19 1.2 80 <14 <5.5 <3.3 <6.7 <3.6 <4.6 <4.2 <4.9 <27 ND 12/17/2018 0.0 ppm 0.0 ppm 18.9%0.0%<0.00023 19 1.0 80 <14 <5.7 <3.4 <7.0 <3.7 <4.8 <4.4 <5.1 28 ND 3/13/2019 0.0 ppm 0.0 ppm 18.5%0.0%<0.00022 18 0.68 81 <14 <5.5 <3.3 <6.7 <3.6 <4.6 <4.2 <4.9 30 ND 6/6/2019 0.0 ppm 0.0 ppm 20.3%0.0%<0.00021 13 0.75 86 26 34 <3.2 <6.4 <3.4 <4.4 <4.0 <4.6 48 ND 9/9/2019 0.0 ppm 0.0 ppm 20.4%0.0%<0.00022 20 0.27 80 <14 11 7.1 <6.8 <3.6 <4.6 <4.2 <4.9 30 ND 11/12/2019 0.0 ppm 0.0 ppm 17.7%0.0%<0.00024 18 1.0 81 <15 190 <3.6 <7.3 <3.9 <5.0 7.1 <5.2 <29 ND 3/18/2020 0.0 ppm 0.0 ppm 18.0%0.0%<0.00023 19 0.53 80 <14 24 <3.4 <6.9 <3.6 <4.7 <4.3 <5.0 <27 ND 6/15/2020 0.0 ppm 0.0 ppm 18.8%0.0%<0.00025 19 0.84 80 <15 8.0 5.1 <7.4 <3.9 <5.1 <4.6 <5.4 30 ND 9/11/2020 0.0 ppm 0.0 ppm 18.5%0.0%<0.00025 19 0.98 80 <16 <6.2 12 <7.6 <4.0 <5.2 <4.8 <5.5 32 ND 12/18/2020 0.0 ppm 0.0 ppm 19.9%0.0%<0.00024 20 0.70 79 <15 <5.9 <3.6 <7.2 <3.8 <4.9 <4.5 <5.2 <29 ND 1/26/2018 0.0 ppm 0.0 ppm 19.2%0.0%<0.00023 21 0.3 79 <14 <5.7 <3.4 <7.0 <3.7 <4.8 <4.4 <5.0 <28 ND 2/16/2018 0.0 ppm 0.0 ppm 19.4%0.0%<0.00023 19 1.2 80 <14 <5.3 <3.2 <6.6 <3.5 <4.5 <4.1 <4.8 <26 ND 3/19/2018 0.0 ppm 15 ppm 18.5%0.0%<0.00021 18 1.4 81 <13 <5.2 <3.1 <6.4 <3.4 <4.4 <4.0 <4.6 <25 ND 4/17/2018 0.0 ppm 2.1%18.5%0/0%<0.00022 19 2.0 79 <14 <5.4 <3.2 <6.6 <3.5 <4.5 <4.1 <4.8 <26 ND 5/14/2018 0.0 ppm 0.0 ppm 20.9%0.0%<0.00023 20 1.1 79 15 <5.7 <3.4 <7.0 <3.7 <4.8 <4.4 <5.1 100 ND 6/5/2018 0.0 ppm 1.5%18.5%0.0%<0.00023 19 1.6 79 <14 <5.7 <3.4 <7.0 <3.7 <4.8 <4.4 <5.1 150 ND 7/16/2018 0.0 ppm 0%18.7%0.0%0.00034 20 0.88 79 21 <5.8 <3.5 <7.2 <3.8 6.5 6.1 5.7 94 ND 8/27/2018 0.0 ppm 0.0 ppm 20.7%0.0%<0.00023 20 1.1 79 <14 18 <3.4 <6.9 <3.6 <4.7 <4.3 <5.0 140 ND 9/18/2018 0.0 ppm 0.0 ppm 18.5%0.0%<0.00024 19 0.96 80 <15 17 <3.5 <7.2 <3.8 <4.9 6.1 8.1 100 ND 10/12/2018 0.0 ppm 0.0 ppm 20.2%0.0%<0.00024 20 0.81 79 <15 8.1 <3.6 <7.3 <3.9 <5.0 <4.6 <5.3 93 ND 11/20/2018 0.0 ppm 0.0 ppm 18.9%0.0%<0.00024 20 1.2 79 <15 <5.8 <3.5 <7.2 <3.8 <4.9 <4.5 <5.2 <28 ND 12/17/2018 0.0 ppm 0.0 ppm 18.3%0.0%<0.00024 19 1.6 79 <15 <5.9 <3.6 <7.2 <3.8 <4.9 <4.5 <5.2 29 ND 3/13/2019 0.0 ppm 0.0 ppm 20.6%0.0%<0.00023 19 1.0 80 <14 <5.6 <3.4 <6.8 <3.6 <4.7 <4.3 <5.0 55 ND 6/6/2019 0.0 ppm 0.0 ppm 18.1%0.0%<0.00026 16 2.2 82 <16 17 <3.8 <7.8 <4.1 <5.3 <4.9 <5.6 59 ND 9/9/2019 0.0 ppm 0.0 ppm 18.6%0.0%<0.00023 19 1.6 79 <14 18 7.3 7.0 <3.6 <4.6 <4.3 <4.9 27 ND 11/12/2019 0.0 ppm 0.0 ppm 17.8%0.0%<0.00025 18 2.0 80 <15 7.4 <7.8 <7.4 <3.9 <5.1 <4.6 <5.4 <29 ND 3/18/2020 0.0 ppm 0.0 ppm 16.7%0.0%<0.00024 18 1.8 80 <15 34 <3.5 <7.2 <3.8 <4.9 <4.5 <5.2 <28 ND 6/15/2020 0.0 ppm 0.0 ppm 19.3%0.0%<0.00025 19 1.6 79 <15 9.3 <3.6 <7.4 <3.9 <5.1 <4.6 <5.4 <29 ND 9/11/2020 0.0 ppm 0.0 ppm 18.3%0.0%<0.00024 20 1.6 78 <15 <6.0 9.7 <7.4 <3.9 <5.0 <4.6 <5.3 36 ND 12/18/2020 0.0 ppm 0.0 ppm 19.0 0.0%<0.00023 20 1.5 78 <14 <5.6 <3.4 <6.9 <3.7 <4.7 <4.4 <5.0 <27 ND 5%5% N/A N/A N/A N/A 14 ug/m3 N/A 43,000 ug/m3 N/A N/A 103,000 ug/m3 18 ug/m3 N/A 37 ug/m3 53 ug/m3 60,000 ug/m3 733,000 ug/m3 440,000 ug/m3 15,000 ug/m3 N/A 18 ug/m3 N/A 37 ug/m3 14 ug/m3 N/A 44,000 ug/m3 440,000 ug/m3 15,000 ug/m3 Note:ND = Not detected at concentrations above the laboratory reporting limits. N/A = Screening value not established SGMW1 SGMW2 Oxygen Methane Methane and Fixed Gases by ASTM Method D1946 DTSC-modified Screening Levels (DTSC SLs); April 2019; commercial/industrial Air, modified by attenuation factor of 0.03 well damaged - not sampled/monitored TABLE I Brusca File No. 137-002 17100 Murphy Parkway, Lathrop, California SUMMARY OF FIELD SCREENING AND LABORATORY ANALYTICAL DATA APPROXIMATE 48-ACRE MURPHY PARKWAY PROPERTY FIELD SCREENING LABORATORY TESTING USEPA Regional Screening Levels (RSLs); April 2019; Industrial Air, modified by attenuation factor of 0.03 SOIL GAS MONITORING WELLS SGMW1 AND SGMW2 Hydrogen Sulfide Volatile Organic Compounds (VOCs) by EPA Method TO-15 San Francisco Bay Regional Water Quality Control Board Environmental Screening Levels (ESL); June 2019; Commercial/Industrial Soil Gas Soil Gas Monitoring Well Date Carbon Monoxide SCREENING VALUES Title 27 California Code of Regulations (27 CCR) Section 20921 (methane concentration at facility boundary)