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lierracon <br />March 27, 2019 <br />San Joaquin County Department of Environmental Health <br />1868 East HazeIton Avenue <br />Stockton, California 95205 <br />Attn: Department of Environmental Health <br />Re: Work Plan for Limited Site Investigation <br />Tracy Ridge <br />6599 and 6735 West Grant Line Road <br />Tracy, San Joaquin County, California <br />Terracon Project No. NA197052.1 <br />To Whom It May Concern: <br />Terracon Consultants, Inc. (Terracon) has prepared this Work Plan to conduct a Limited Site <br />Investigation (LSI) at the above-referenced site (Exhibit 1) on behalf of Ridge Capital, Inc. A <br />description of the project, scope of the LSI, and schedule are provided in the following sections. <br />1.0 PROJECT INFORMATION <br />The site is located at 6599 and 6735 West Grant Line Road, Tracy, San Joaquin County, California <br />(Assessor Parcel Number [APNs] 213-170-27), and consists of an approximately 122.39-acre tract <br />of land improved with residential and farm related structures near the southwestern corner. <br />Terracon prepared a Phase I Environmental Site Assessment (ESA) for Ridge Capital, Inc. <br />(Terracon Project No. NA187052, dated December 21, 2018. The Phase I ESA report identified <br />the following recognized environmental conditions (RECs) associated with the site: <br />Wastewater Pond (Western portion of the site): Based on the duration of <br />operations (approximately 25 years), unlined construction of the pond, absence of <br />information pertaining to the management and regulatory oversight of the pond, <br />reported operations (dairy farm), absence of subsurface investigation, and shallow <br />depth to groundwater in the site vicinity (approximately 12.5 and 20 feet below <br />ground surface [bgs]), the former wastewater pond located on the western portion <br />of the site represents a REC to the site. <br />Absence of Removal Records Associated with Historic UST(s): Underground <br />storage tank (UST) removal records were not available for at least two 350-gallon <br />gasoline USTs identified on the site that were installed in the 1970s. The exact <br />location of the USTs was unknown, though it is presumed to be near the residential <br />garage near the southwestern portion of the site, as stated by the site tenant. At <br />Terracon Consultants Inc. 50 Goldenland Court, Suite 100 Sacramento, California 95834 <br />P (916) 928-4690 F (916) 928-4697 terracon.com <br />Environmental Facilities Geotechnical Materials