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Sampling and Analysis Plan for Phase II Environmental Site Assessment 125 North Stockton Street, Lodi,CA 95240 A Property location map is illustrated on Figure 1, and a map illustrating Property features is provided as Figure 2. 1 .5 Previous Environmental Studies Stantec completed a Phase I ESA of the Property dated October 2021 (Stantec 2021) on behalf of the City of Lodi. The Phase I ESA identified recognized environmental conditions (RECs) in connection with the Property, several of which are the subject of investigative activities proposed herein. Pertinent RECs and additional observations which inform the proposed work scope are summarized below, and key features are illustrated on Figure 3. REC#1. Portions of the western edge of the Property were historically developed with an MGP in the late 1800s and likely into the early 20th century. This site is listed in the California Department of Toxic Substances Control's (DTSC) Envirostor database with a status of "inactive - needs evaluation" as of October 6, 1995, with no restricted use indicated. The contaminants of potential concern (COPCs) are listed as polynuclear aromatic hydrocarbons (PAHs) and were listed as unconfirmed. Additional non-specified COPCs typically associated with former MGPs include heavy metals, particularly arsenic. Due to the nature of the historical use of this site, there is a possibility that shallow soil on the Property may have been contaminated with PAHs and arsenic; therefore, the former MGP located on a portion of the Property constitutes a REC. REC #2. According to historical Sanborn maps, a fuel-containing UST was located on the northwestern portion of the Property between at least 1908 and 1916. No other information regarding the status of this tank were identified.The potential presence of a historical fuel UST on the Property constitutes a REC. REC #3. Groundwater beneath portions of the downtown area of the City of Lodi is known to be impacted by chlorinated solvents including tetrachloroethene (PCE), trichloroethene (TCE), and related volatile organic compounds (VOCs) attributed to multiple point sources associated with historical dry cleaning and/or industrial operations. Investigations have identified multiple groundwater plumes (the Central, Northern, Southern, and Western Plumes, and the Busy Bee Plume) that comprise a commingled plume of impacted groundwater ranging in depth from approximately 35 to 300 feet below ground surface (bgs). The monitoring well network associated with these groundwater impacts spans approximately 650 acres in downtown Lodi, generally located between Lockeford Street to the north and Kettleman Lane/Highway 12 to the south. There are multiple environmental cases associated with these plumes, and groundwater has been monitored periodically in these areas for nearly two decades.The Property is located on the northeastern periphery of the Northern Plume area. The documented regional PCE impacts to groundwater in the vicinity of the Property constitutes a REC and potential vapor encroachment condition (PVEC). REC #4. Widespread oil staining was observed on the floor of the equipment repair shop located on the Property. This evidence of incidental spills of automotive fluids and the potential for petroleum hydrocarbon and VOC impacts to the subsurface constitute a REC. Stantec 3