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EBI Consulting Burlington, MA 2703 Tel: (781) 273-25-2500 A environmental engineering due diligence Fax: (781) 273 3311 g� g I 9 www.ebiconsulting.com March 21, 2024 RE: US-CA-5837/South Tracy 831 W. Durham Ferry Road, Tracy, California EBI Phase I ESA Project#002256-PR BACKGROUND The Subject Property is located at 831 W. Durham Ferry Road in Tracy, San Joaquin, California County, California. Tracy is located in northern California, and the Subject Property is approximately seven miles southeast of downtown Tracy.The current tenancy is Monopole use. The Subject Property, known as South Tracy, consists of an approximately 42.36-acre lot that is currently improved with an almond orchard. No buildings or structures are present on the Subject Property at this time. • The Subject Property appears to have been initially utilized for agricultural purposes as early as early as 1915. These uses varied, but have included irrigated cover crops and orchards. Based upon the historical and current orchard use of the Subject Property and the documented use of organochlorine and arsenate pesticides in the region (as evidenced by sampling results at the nearby Trinkle & Boys Agricultural Flying CPS-SLIC and EnviroStor site), subsurface conditions at the Subject Property may have been impacted by the current and long-term historical orchard operations conducted on the Subject Property. This is considered to represent a recognized environmental condition (REC) for the Subject Property, including the Project Site. EBI understands that The Towers LLC proposes to construct a tower facility on the southeastern portion of the Subject Property. The tower facility will include a 105-foot Monopole tower, equipment enclosure, equipment cabinets, and an emergency generator located within a fenced compound on a 30 foot by 30 foot lease area. The Towers LLC plans to improve an access road from West Durham Ferry Road to the tower area. Utilities will follow the proposed access road. EBI understands that The Towers LLC seeks to obtain information regarding the presence or absence of hazardous materials and/or petroleum products in soil and/or groundwater at the location of the proposed Project Site, which may involve excavation to a depth of approximately 30 feet below ground surface (bgs), thereby potentially encountering contaminated groundwater and associated saturated soil, resulting from historical Subject Property use. The information generated from the proposed scope of work will be useful in identifying the potential costs and options for disposal of excess soil generated during construction, for management of dewatering fluids, if necessary, and for use in determining special worker health and safety precautions, if warranted. PROPOSED SCOPE OF WORK • EBI and/or a drilling subcontractor will contact the appropriate state agencies and local and municipal utilities in order to obtain utility clearance prior to commencing the subsurface investigation. Unless otherwise agreed, the Client shall provide or arrange for EBI to be provided with locations of buried utilities and other underground structures in areas of subsurface exploration. The on-site representatives will also confirm the location of underground utilities to EBI. In addition, EBI will retain a private utility locator contractor to screen the proposed drilling locations for underground utilities. • The Phase 11 ESA scope of work will include the advancement of one soil boring. The boring will be advanced in the proposed location of the proposed monopole (I boring). A hollow-stem auger drilling rig or Geoprobe direct-push sampling rig will be utilized to advance the soil borings. The boring in the location ENVIROBUSINESS, INC. LOCATIONS I BALTIMORE, MD I BURLINGTON, MA I TEMPE AZ I IRVINE CA SOUTHYORK PA IQUINCY MA I RICHMOND VA