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Advanced . <br /> G e o Environmental, Inc . <br /> 1 16 October 2014 <br /> AGE Project No. 13-2675 <br /> 1 <br /> Mr. Ernesto Renteria, Jr. <br /> 1 3312 West Creek Drive <br /> Stockton, CA 95209 <br /> 1 Subject: Additional Site Assessment Report <br /> PIMENTEL PROPERTY <br /> 1650 South EI Dorado Street, Stockton, California <br /> 1 Dear Mr. Renteria: <br /> 1 At your request, Advanced GeoEnvironmental, Inc. (AGE) has prepared this Additional <br /> Site Assessment Report for the subject property located at 1650 South EI Dorado <br /> Street, Stockton, California (site). The scope of work was completed in October 2014 <br /> 1 and included advancement of three shallow soil borings for collection of soil-vapor <br /> samples and one deep soil boring for collection of soil and groundwater samples. A plan <br /> depicting site structures and boring locations is illustrated in Figure 1. <br /> 1 <br /> INTRODUCTION AND BACKGROUND <br /> 1 Historical information available for the site address indicates that a dry cleaning facility <br /> was formerly located in the eastern portions of the site from approximately 1911 until <br /> 1 approximately 1960. Furthermore, historical Sanborn Fire Insurance maps for the site <br /> indicate the presence of potential in-ground fuel tanks located in the east-central portion <br /> of the site; as well as a steaming room or steam generator in the central portion of the <br /> 1 site. <br /> Based on the historical information reviewed, AGE performed a limited subsurface <br /> 1 investigation at the site. On 30 October 2013, AGE advanced three soil borings (B1 <br /> through 133) at the subject property. Soil borings B1 and B2 were advanced in the <br /> 1 location of the former dry cleaning facility and B3 was advanced in the location of the <br /> former potential in-ground petroleum tanks; B1 through B3 were advanced to depths of <br /> approximately 30 feet below surface grade (bsg) for soil sample collection and depths of <br /> 1 38 feet bsg for groundwater sample collection. Soil boring locations are illustrated in <br /> Figure 1. The following is a summary of the findings from the October 2013 <br /> investigation. <br /> 1 <br /> 1 <br /> 837 Shaw Road• Stockton,CA 95215 <br /> 1 Telephone(209)467-1006 • Fax(209)467-1118 <br />