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Wright 11 <br /> Environmental <br /> Services, Inc. <br /> r <br /> Construction ♦ Engineering ♦ Remediation <br /> November 2, 1998Rr <br /> 4• � <br /> APR <br /> 07 <br /> Mr. Rich Wilson X999 <br /> A.G. Spanos let Center i NTAL HEAL-TH <br /> 4800 S. Airport Way i{ PERiAIT/SERVICES <br /> Stockton, CA 95206 <br /> a <br /> IF Re: Letter Report— Soil and Groundwater-Grab Sampling <br /> Underground Storage Tank Site, A.G. Spanos Jet Center <br /> 4800 South Airport Way. Stockton. California i;' <br /> Dear Mr. Wilson: <br /> t Wright Environmental Services. Inc. (Wright) is pleased to provide the A.G. Spanos Jet <br /> 1 Center with this letter report documenting soil and groundwater-grab sampling activities <br /> and results from the above-referenced under round storage tank (UST) site. <br /> V <br /> A total of three USTs currently- exist at the site (Figure 1): One 12.000-gallon aviation <br /> -asoline UST and one 12.000-gallon *et fuel UST are scheduled for removal. One <br /> existing 20.000-gallon jet fuel UST will remain in service. New replacement USTs will <br /> be installed in the same excavation as the removed USTs"or in an alternate location. <br /> t depending on the presence and extent of am- impacted soil in the original UST <br /> �a <br /> ° excavation. <br /> it <br /> Scope of Wort: <br /> The primary objective of this soil and groundwater-grab sampling effort was to determine <br /> if subsurface soil and ,roundwater in the vicinity of the existing USTs and at an alternate <br /> UST location have been impacted by aviation gasoline and/or jet fuel hydrocarbons. In <br /> addition. the data collected durim, this investigation will be used by a civil engineer to <br /> design shorin2 for the excavation and determine other subsurface soil engineering <br /> parameters. A registered civii engineer will prepare and submit the engineering results in j <br /> a separate report. '' } <br /> On October 23. 1998. Spectrum Exploration drilled two soil borings at the site using a <br /> truck-mounted drilling rig. equipped with 8-inch outside diameter hollow-stem augers. <br /> The drilling yeas performed under San Joaquin County Public Health Services <br /> Environmental Health Division (PHS/EHD f Permit '017`_'97. One soil boring (B-]) was <br /> Positioned along the cast si&:'of the existing 12.000-�a,l,�n aviation gasoline 1ST and the <br /> other sail boring (B-2] was located at the alternate US'F location. approximately 150 west <br /> oCB-1 (Figure 1 ). j <br /> 67 E. I Oth Street , Tracy, CA 95376 <br /> 209.833.0758 , Fax 209.832.5152 <br /> wrighr@yinreuch.com Lic. n6S}501 A-B Hac,4lu1 �4M <br /> ,ret.rit http://home.inreach.r_om/ztriQi�t <br />