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ENCON • Available historical and regulatory records indicate the site subject property was occupied by various fertilizer and agricultural chemical operations between the 1930s and mid- 1990s. The storage and use of agricultural chemicals at the Subject Site between the 1930s and mid-1990s, and the three targeted areas used to store and possibly spray agricultural chemicals are shown in Figure 2,represent RECs. 2.2 Conclusions, Opinions and Recommendations—Partner, 2021 Partner performed a Phase I Environmental Site Assessment in conformance with the scope and limitations of ASTM Practice E1527-13 for the Subject Site. The Phase I ESA environmental site assessment has revealed evidence of recognized environmental conditions (RECs) in connection with the Subject Site. Based on the conclusions of the assessment, Partner recommended a Phase II ESA subsurface soil and soil gas investigation should be conducted in order to determine the presence or absence of soil contamination due to the historical use of the subject property for automotive repair and agricultural chemical storage and onsite uses. 3.0 PHYSICAL SETTING 3.1 Topography The United States Geological Survey (USGS) Stockton West, California Quadrangle 7.5-minute series topographic map was reviewed for this ESA. According to the contour lines on the topographic map, the subject property is located at approximately 22 feet above mean sea level (MSL). The contour lines in the area of the subject property indicate the area is sloping gently toward the west-northwest. (Partner, 2021). 3.2 Hydrology According to topographic map interpretation, the direction of groundwater flow in the vicinity of the subject property is inferred to be toward the south-southeast. The nearest surface water in the vicinity of the subject property is the McLeod Lake located approximately 1.15 miles west- northwest of the subject property. No settling ponds, lagoons, surface impoundments,wetlands or natural catch basins were observed at the subject property during this assessment. According to available information, a public water system operated by the City of Stockton provides water to the subject property vicinity. Approximately 25% of the City's water supply originates from groundwater wells with the remaining water supply from treated surface water supplied by the Stockton East Water District (SEWD) according to the agency's website. According to the City of Stockton's 2020 Water Quality Report, shallow groundwater beneath the subject property is not utilized for domestic purposes. No obvious signs of groundwater supply wells were observed in the vicinity of the subject property. 3