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r <br /> Advanced v�q <br /> GeoEnvironmental Inc...,, - <br /> of Northern California <br /> 05 May 1997 <br /> AGE-NC Project No..97-0330 <br /> Mr. Steve Sasson <br /> San Joaquin County Public Health Services-Environmental Health Division <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> Subject: Preliminary Site Investigation Work Plan <br /> PIE NATIONWIDE <br /> 2007 North Wilson Way, Stockton, California <br /> Dear Mr. Sasson: <br /> In accordance with the request of Mr. Shanjibhai Ranchhod, Advanced GeoEnvirotunental, Inc. <br /> (AGE)has prepared the enclosed Preliminary Site Investigation'Work Plan for the collection of soil <br /> samples beneath the former underground storage tank (UST) area at 2007 North Wilson Way, <br /> Stockton, C'alifot�nia. The location of the site is illustrated in Figure.l -Location Map. A plan of the <br /> site is illustrated on Figure 2 - Site Plan. <br /> SCOPE OF WORK <br /> AGE proposes to advance one vertical soil probe boring to a depth of approximately 25 feet below <br /> site grade (bsg). The soil probe boring will be advanced using a Geoprobe 5400 soil probing unit <br /> equipped with 1.125-inch diameter probe rods and an attached 2.15-inch diameter soil sampler. The <br /> soil sampler will be loaded with clean 1.125-inch by 6-inch brass sleeves. The proposed soil probe <br /> boring location is illustrated on Figure 2. <br /> Soil samples will be collected from each soil probe boring at depths of 15 and 20 fcct bsg. If <br /> petroleum hydrocarbon-impacted soil is encountered during probing activities, probe borings may be <br /> advanced to greater depths in an attempt to determine the extent impacted soil. <br /> EQUIPMENT DECONTAMINATION <br /> All probing rods, sampling tools and sample liners used for sample collection will be thoroughly <br /> rinsed with clean water after washing with a solution of Alconox. <br /> 1803 West March Lane,Suite A,Stockton,California 95207 <br /> Telephone(209)956-0264 FAX(209)956-0700 <br />