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SITE ASSESSMENT - NOVEMBER 4, 2021 As outlined in Atlas's October 12, 2021, Proposal for Limited Assessment, Atlas performed a limited soil assessment to address the SJCEHD concern regarding buried cars at the property. The purpose of the assessment was to provide evidence to the SJCEHD that the soil (and groundwater) where the car was buried is free of contamination. 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 soil boring permit was acquired from the SJCEHD. A copy of the permit is provided in Appendix D. Additionally, Atlas prepared a site-specific Health and Safety Plan (HASP) prior to initiating field activities. The HASP included a list of potential chemical and physical hazards, health and safety policies and practices and emergency contingencies, including contact information for police, medical and fire. A copy of the HASP was kept on-site during all field activities. Before initiating daily field activities, health and safety meetings were conducted. The HASP was reviewed and signed by all on-site workers involved with the scope of work. 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. Drilling and Soil Sampling Activities A California-licensed drilling company, MR Drilling (C-57 license #740854), of Santa Fe Springs, California, was contracted to advance soil borings SB-1 through SB-3 at the locations shown in Figure 2 in the area where the Jeep was buried. On November 4, 2021, MR Drilling advanced three soil borings using a Geoprobe 6600 drilling rig in the presence of SJCEHD personnel. The soil borings were advanced to approximately 15 feet below ground surface (bgs) at each location. Continuous soil samples were collected during drilling beginning at the ground surface and ending at the terminus of each boring. The soil samples were collected into acetate liners. Soil samples collected as part of this assessment were field-screened using a photo-ionization detector (PID) to detect for the presence of Total Organic Vapors (TOVs). Soil retrieved from the liners was also visually inspected and logged using the Unified Soil Classification System (USCS) criteria. Soil samples selected for laboratory analysis were collected at 10 and 15 feet bgs from each boring. The selected soil samples were collected directly from the acetate liners using United States Environmental Protection Agency (USEPA) Method 5035 and placed into laboratory-supplied containers. The samples were then placed in a cooler full of ice and submitted under chain-of-custody protocol and analyzed at a State of California-certified laboratory (Pace Analytical, Inc. of Mount Juliet, Tennessee) for the following: Total Petroleum Hydrocarbons as Gasoline (TPH-g), as diesel (TPH-d), as motor oil (TPH-mo) and residual range hydrocarbons (TPH-rr) by USEPA Method 8015; Volatile Organic Compounds (VOCs) using USEPA Method 8260B; Total Lead by USEPA Method 6010B; Total Solids by Method 2540 G-2011.