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1rerracon <br />November 16, 2021 <br />San Joaquin County Department of Environmental Health <br />1868 East Hazelton Avenue <br />Stockton, California 95205 <br />Attn: Department of Environmental Health <br />Re: Work Plan for Installation of Piezometers <br />1515 Fresno Ave Industrial Building Development <br />1515 S Fresno Ave <br />Stockton, San Joaquin County, California <br />Terracon Project No. NA215051 <br />To Whom It May Concern: <br />Terracon Consultants, Inc. (Terracon) has prepared this Work Plan for the installation of <br />piezometers at the above -referenced site (Exhibit A-1) on behalf of Westcore. A description of the <br />project, scope of the piezometer installation, and schedule are provided in the following sections. <br />1.0 PROJECT INFORMATION <br />The site is located at 1515 S Fresno Ave, Stockton, San Joaquin County, California. The <br />approximate coordinates of the center of the site are: 37.9333°N and 121.3141 °W, and the <br />property consists of an approximately 1.4 -acre northern lot and a 13 -acre southern lot. Terracon <br />prepared a geotechnical engineering report for this project dated July 7, 2021, project number <br />NA215051. <br />During the field explorations for the geotechnical engineering report, groundwater was <br />encountered at depths between 7 to 12 feet below the existing ground surface. Terracon <br />recommended the installation of piezometers to monitor groundwater elevations. <br />2.0 SCOPE OF SERVICES <br />The scope of the piezometer installation includes the following: <br />Preparing this letter Work Plan for review and approval by the San Joaquin County <br />Department of Environmental Health (SJCDEH); <br />Advancing 3 soil borings to a maximum depth of 20 feet below the existing ground surface <br />at locations shown on Exhibit A-2; and <br />Terracon Consultants Inc. 902 Industrial Way Lodi. California 95240 <br />P (209) 357-3701 F (209) 333$303 terracon.com <br />