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SITE ASSESSMENT - FEBRUARY 22, 2022 Due to the exceedances detected in soil sample JCS-1, Atlas personnel returned to the site on February 22, 2022, to further assess the soil beneath where the car was located. The purpose of the assessment was to determine the vertical and lateral extent of potential TPH-mo impact based on the analytical; results of soil sample JCS-1. Prior to initiating the site assessment activities, Atlas coordinated site access with Bonnie Plants (property owner) for the assessment activities outlined in the October 2021 proposal. A drilling permit was not required from the SJCEHD due to the shallow depth of the soil borings. Underground Service Alert (USA), also known as Dig-Alert, was contacted after marking the drilling locations as required by law. Representatives of local utility companies having underground services in the drilling area visited the site and marked the locations of their respective utilities. Soil Sampling Activities On February 22, 2022, Atlas personnel performed three soil borings at the locations shown in Figure 2. Soil samples for laboratory analyses were collected at one, two and three feet bgs from each boring. The selected soil samples were collected directly from the bucket of a field-decontaminated hand auger using USEPA Method 5035 and placed into laboratory-supplied containers. The containerized samples were then placed in a cooler full of ice and submitted under chain-of-custody (COC) protocol and analyzed at a State of California-certified laboratory (Pace Analytical, Inc. of Mount Juliet, Tennessee) for the following: TPH-g, TPH-d, TPH-mo and TPH-rr USEPA Method 8015; VOCs using USEPA Method 8260B; Title 22 Metals by USEPA Method 6010B; Total Solids by Method 2540 G-2011. The soil samples collected at two and three feet bgs were placed on hold pending the laboratory analytical results of the one-foot deep samples (SSA-1', SSB-1' and SSC-1'). Waste was not generated during the February 22, 2022, assessment. Groundwater was not encountered during the soil sampling activities. Laboratory analytical results for soil samples SSA-1', SSB-1' and SSC-1' yielded trace concentrations of TPH-g in samples SSA-1' (0.187 V3 mg/kg) and SSB-1' (1.43 J mg/kg). TPH-d was detected in all three samples at concentrations ranging from 0.824 J mg/kg (SSA-1') to 2.21 J mg/kg (SSB-1'). TPH-mo was detected in all three samples at concentrations ranging from 3.06 J mg/kg (SSB-1') to 4.30 J mg/kg (SSC- 1'). TPH-rr was detected in samples SSB-1' (1.53 J mg/kg) and SSC-1' (2.29 J mg/kg only. Toluene was detected in samples SSA-1' (0.002021 mg/kg) and SSB-1' (0.00218 J mg/kg). Total xylenes were detected in samples SSA-1' (0.00223 J mg/kg) and SSB-1' (0.00120 J mg/kg). Various metals were detected above their respective laboratory reporting limits in all three soil samples collected on February 22, 2022. Notable metals detected included arsenic which was detected in all three soil samples at concentrations ranging from 1.15 J mg/kg (SSC-1') to 1.58 J mg/kg (SSA-1'). Lead was detected in all three samples at concentrations ranging from 7.34 mg/kg (SSC-1') to 10.2 mg/kg (SSB-1'). Chromium was detected at concentrations of 39.4 mg/kg (SSA-1'), 27.3 mg/kg (SSB-1') and 27.0 (SSC-1'). Mercury was detected at concentrations of 0.0359 J mg/kg (SSA-1'), 0.0346 J mg/kg (SSB-1') and 0.0467 mg/kg (SSC-1').