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GROUND ZERO ANALYSIS, INC. <br /> • 1714 Main Street <br /> Esealon, California 95320 <br /> Telephone (209) 838-9888 <br /> Facsimile (209) 838-9883 <br /> February 14, 2002 <br /> Mr Sam Savig <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, CA 95202 <br /> Subject Groundwater Monitoring Well Installation Report <br /> Souza II, LLC, 612 West 1 Ith Street, Tracy, California <br /> Site Code 0001283 <br /> Dear Mr Savig <br /> Ground Zero Analysis, Inc (Ground Zero) prepared this report on behalf of Souza Il, LLC to summarize <br /> the installation of three groundwater monitoring wells and to present analytical results of soil and <br /> groundwater samples collected during the investigation The work was conducted at the request of the <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) to further <br /> evaluate the nature and extent of soil and groundwater contamination associated with four previously <br /> unidentified underground storage tanks (USTs) <br /> 1.0 SITE BACKGROUND <br /> 1.1 Site Description and Hydrogeologic Setting <br /> The site is located at 612 West Eleventh Street, in the city of Tracy, California A site location map is <br /> presented on Figure I Predominant land use in the site vicinity is mixed commercial and residential The <br /> site sits on the south side of Eleventh Street, which is occupied by commercial/retail establishments <br /> The elevation of the ground surface at the site is approximately 50 feet above mean sea level (MSL), and <br /> slopes gently downward to the north The nearest natural drainage feature is Sugar Cut, located <br /> approximately 2 '/4 miles north-northeast of the property Tom Paine Slough is located approximately 2 3/4 <br /> miles northeast of the property Shallow groundwater beneath the site was expected at approximately <br /> 10 to 12 feet below ground surface (bgs) <br /> 0 1.2 Underground Storage Tank Removal <br /> Four unknown USTs were discovered during earthmoving activities at the subject site The location <br /> G 1DatalGROUNDZEITHORPE1SouzalReportslWELLRPT doc <br />