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Ce06gccal Tecfi4ccs l4c. <br /> 1101 7'h Street ; <br /> l Modesto,Catifomia 95354 <br /> (209)522-41191 Fax(209)522-4227 <br /> Lill <br /> j REPORT <br /> Site Characterization <br /> Elving (Broadway) <br /> 1610 N.Broadway <br /> Stockton, California <br /> Project No. 1218.2 <br /> February 9, 2006 <br /> 1.0 INTRODUCTION <br /> The subject property (Broadway) consists of a parcel of land occupied by one commercial <br /> �•• warehouse building and large gravel parking lot (see Figures 1 & 2: Vicinity and Site Map, <br /> respectively.) In the County Assessors Records, for the`years 1963, 1968 and 1974 is a <br /> listing of a 500-gallon underground fuel storage tank (UST) valued to the property. No <br /> record was found as to the disposition of the tank. However, it was reportedly filled with <br /> cement and left in place. Site inspection found evidence of what appears to be a former fill <br /> pipe plugged with concrete and a former pump dispenser pad capped with concrete. .A <br /> magnetometer survey showed evidence of a small size tank oriented west of the fill pipe <br /> structure. <br /> E <br /> On July 12, 2005, V&W.Drilling and Geological Technics4nc. (GTI) personnel mobilized to <br /> the site. Three GeoProbe boreholes (GP-1, GP-2 & GP-3)' were advanced to a total depth of <br /> 20 feet below grade surface (bgs) in the locations that are shown in Figure 2. Soil samples <br /> .were obtained in each location form 12 and 14 feet b s.) The laboratory analyses ses of these <br /> samples revealed the presence of gasoline and diesel rano e petroleum hydrocarbons in the <br /> �f vicinity of the alleged UST. <br /> GTI's preliminary interpretation of the approximate extent of the contamination and soil <br /> types was included in our August 3, 2005 "Tank Closure-'Investigation". GTI subsequently <br /> developed our September 26, 2005 "Soil Investigation" work plan to further define the lateral <br /> and vertical extent of petroleum hydrocarbons at the site. The work plan proposed advancing <br /> Lsix direct push borehole and obtaining soil and groundwai�r samples for laboratory analysis. <br /> The following sections detail the field activities completed in accordance with GTI's work <br /> plan. <br /> 4� <br />