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A Universal <br /> Corporate Office <br /> W a I l a c e K u h l Engineering <br /> Sciences 3050 Industrial Boulevard <br /> 6 ASSOCIATES Company West Sacramento,CA 95691 <br /> 916.372.1434 phone <br /> 916.372.2565 fax <br /> July 13, 2021 <br /> Stockton Office <br /> 3422 West Hammer Lane,Suite D <br /> Stockton,CA 95219 <br /> 209.234.7722 phone <br /> Mr. Jeffrey Wong 209.234.7727 fax <br /> San Joaquin County Department of Environmental Health <br /> 1868 E. Hazelton Avenue <br /> Stockton, CA 95205 <br /> Email: Jwong(o-)_sigov.org <br /> Work Plan for Phase 11 Environmental Site Assessment <br /> WESTLAKE SUBDIVISION VILLAGES E, G, H, I, & J <br /> Regatta Lane <br /> Stockton, California 95219 <br /> WKA No. 13221.02 <br /> Dear Mr. Wong: <br /> Wallace-Kuhl &Associates (WKA) prepared this work plan to describe field activities in <br /> connection with a Phase II Environmental Site Assessment (Phase II ESA) for the Westlake <br /> Subdivision Villages E, G, H, I, & J Property (herein referred to as Site). The Site includes <br /> 101.62 acres identified by five San Joaquin County Assessor's Parcel Numbers: 066-470-010 <br /> and 066-050-230, 066-050-240, 066-050-250, and 066-050-260, which do not include the 30.33 <br /> acres that are the inundated parcel, 006-050-470-000. <br /> Background <br /> WKA has completed a study, Phase I Environmental Site Assessment, Westlake Subdivision <br /> Villages E, G, H, 1, & J, Regatta Lane, Stockton, California, WKA No. 13122.01. The Phase I <br /> ESA study revealed the Site had supported row crops and other irrigated crops from at least <br /> 1937 to at least 1998. The Site was excavated, by 2006, to construct a 3.033 -acre lake, <br /> around which residential lots would be developed. Site records indicate that soil excavated to <br /> construct the lake was placed in a 21/2-foot thickness over the land surrounding the lake. Visual <br /> observations made during the Phase I ESA site reconnaissance revealed the Site surface did <br /> not exhibit significantly changing surface elevations. These observations and the calculations of <br /> excavated soil indicate that the entire area of the Site that is outside of the lakes was likely <br /> covered by at least two feet of fill. <br />