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1. BACKGROUND INFORMATION According to recent documentation, nine current and former hydraulic lifts were idetified during a Phase I Environmental Site Assessment conducted at the site in January of 2023. The report included a recommendation to determine if the hydraulic systems had leaked into the subsurface soil. 2. PHYSICAL SETTING AND SITE DESCRIPTION The Site is located at 3003 Auto Center Circle in Stockton, California. The Site resides in an area generally characterized by residential and commercial use. The general topography of the surrounding area is relatively flat and slightly slopes to the southwest towards Calaveras River. The site has operated as an automotive sales and maintenance/repair facility for multiple on-site auto dealerships from at least 1988 and is situated on 4.0-acres of land. The Site is composed of two single-story commercial buildings and an associated paved parking lot. A car wash station is located in the northeast portion of the northern building with the remaining portion of the building dedicated to auto maintenance. 3. SCOPE OF WORK Atlas has been directed by the Client to conduct due diligence of the Site and to complete a limited subsurface investigation in connection with the findings of the Phase I ESA conducted in January of 2023. Atlas will coordinate preliminary field activities, conduct drilling at the Site, and report the investigations findings. Activities completed during the Limited Subsurface Investigation are described as follows. 3.1 Health, Safety, Permitting and Utility Clearance As required by the Occupational Safety and Health Administration (OSHA) Standard "Hazardous Waste Operations and Emergency Response" guidelines (29 CFR 1910.120), and by California Occupational Safety and Health Administration (Cal-OSHA) "Hazardous Waste Operations and Emergency Response" guidelines (CCR Title 8, Section 5192), a Site-Specific Health and Safety Plan (HASP)was prepared prior to the commencement of fieldwork. The Site-Specific HASP was reviewed and signed by all field staff and contractors before beginning field operations at the site. Atlas obtained drilling permits from the San Joaquin County Environmental Health Department (SJCEHD) prior to beginning field work. Prior to initiation of drilling activities, Atlas marked the proposed drilling locations with white paint and contacted USA North utility locator service. Utility locators were requested to identify the location of any buried structures or utilities on the property. A private utility locator service was also utilized to further identify potential subsurface utilities in proposed drilling locations. 3.2 Field Activities An Atlas geologist will supervised the advancement of soil borings by a C-57 licensed drilling contractor over approximately two days. Soil borings will be advanced using a direct push drilling system, to evaluate soil conditions beneath the site for the potential presence of contaminant impacts. Six soil borings will be advanced to a maximum depth of 20 feet below ground surface