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Wright <br /> { Environmental <br /> Services, Inc. <br /> Construction <br /> �v ♦ Engineering ♦ Remediation <br /> November 2 1998 <br /> i NIr. Rich Wilson MAR Q 5 1999 <br /> { A.G. Spanos Jet Center <br /> 4800 S. Airport Way ENVIRONMENTAL HEALTH <br /> Stockton, CA 95206 PERMIT/SERVICES <br /> Re: Letter Report — Soil and Groundwater-Grab S,ampiing <br /> Underground Storage Tank Site. A.G. Spanos Jet lCenter <br /> 4800 South Airport Way. Stockton- California <br /> ' Dear Mr. Wilson: <br /> Wright Environmental Services. Inc. (Wright) is pleased oto provide the A.G. Spanos Jet } <br /> Center with this letter report documenting soil and groundwater-arab sampling activities <br /> and results from the above-referenced underground storage tank (UST) site. <br /> i A total of three USTs currently exist at the site (Figure 1). One 12.000-Gallon aviation <br /> L_>asoline UST and one 12.000-gallor jet fuel LAST 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 /> depending on the presence and extent of any impacted soil in the or]Lginal UST <br /> excavation. <br /> i <br /> Scope of Work <br /> The primary objective of this,soil and groundwater-Drab 3sampiing effort was to determine <br /> if subsurface soil and groundwater in the vicinity of the existins 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 during this investigation will be used by a civil engineer to <br /> design shoring for the excavation and determine other subsurface soil engineering ` <br /> parameters. A reLgistered civil engineer will prepare and.submit the engineering results in <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'ldiameter hollow-stem augers. <br /> f The drilling was performed under San Joaquin County Public Health Services <br /> Environmental Health Division (PHS,'EHD) Permit Y017_29 '- One sail boring (B-1) was <br /> positioned along the -ast of the existing 12.000-gaili n aviation gasoline UST and the <br /> ether soil borinu iB-2+ was located at the.alternate CST I'ocaLion. approximately 150 west � <br /> of B-1 (FiLyure 1 ). <br /> t I <br /> I 67 E. 10th Street ♦ Tracy, CA 95376 } <br /> 209.833.0758 • Fax 09.832.5152 <br /> wrighrVinreach.com Lic. #6:1501 A-B Ha_Wai AM <br /> ,wchsir http://home.i.nreach.com/li,rrght <br /> i. <br /> .-.i:.�'n Z...'::'r,G:.,._7_z:1 <br />