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ac oo an ix.cx .rnn �1er. <br /> v Wright `/ {; <br /> -,. Environmental o�C <br /> Services,Inc. FILE, <br /> Canraartim ♦Engiweenag # Reme,Garioa <br /> Posta •Fax Note 7677 DB1°/a,-8_ pages► — <br /> To Preim <br /> I)�>E, 1999 <br /> Ca�41ePr Co. <br /> Phone# <br /> Mr. qq�p# 075 <br /> Mr.S1mwa Kdlep Fax Fax# <br /> M&M Bwlde[s Ssppiy <br /> P.U.Baa 1107 <br /> Tray,CA 9537E-1107 r V <br /> Re: worhrplm for En.draomental Subsurface Site Investigation, 0 8 oa, 1999 <br /> M&MWrW &rojeetnN� J1 w Wesenib St.Tracy,CA M76 ENpE 0NMENT,gL HEALTH <br /> rHS-VW,site Code- 1930 RMI T/SERVI CES <br /> Dar W. Kelley, <br /> Wright Environmental services, Isic. (Wright) is pleased to provide you with this workplan for the <br /> environmental investigatlmt at the above rdormced site (ser Figure 1). The purpose of this[roil[is to <br /> asentan presence of suspected petroleum contaminants m soil and gromdwater wound the furmer tank <br /> arra as required by the San loaqu n Couisty, Pablic Hand. Services Etnritoasoental llntth Division <br /> OWS-MM)m that lever darrd August 16, 1999. <br /> BACKGROUND <br /> Two underground fuel storage flaks (milt k l 1,000 gallon diesel Tao[#2 1000 gallm g solia;)were <br /> used by M"Boilding Supply nnW tbeir removal from the site on August E, 1988 and Jmue 23,1994 <br /> respectivdX (see Fivit a 0. One soil and one grab groundwater sample wets edleaed ftwo the tank pit <br /> of T-l. Analysis of the sail evidenced 8,700 pars per million(ppm)Total Pehuleam Hydrocarbon(nit), <br /> _E-ppm benzene, 1.4-ppm toluene and L 1-ppm xylene. Analysis of the water evidenced 56,000-pars per <br /> billim(ppb)TPK 11,000-ppb heozme 3,100-Mb mhrene and 7,200-ppb xylene. Faun and sample and <br /> one grab groundwater sample were collected for wxdyses subsequent to removal of T-2. Two soil sample <br /> from the bottom of the tank pit were reported as our-dcnelahle fm TPH and two soil samples w1lacted <br /> front the stockpile and amlyzetl, evidenced very an TPH coulaminatfon. The wine[Simple collected <br /> ftma the teak pit and anatyretl evidenced 11,000-ppb TPA as gas(TPHg), 110-ppb ethyl benzene. On <br /> July 2$ 1994 another water sample was collecied, analyse resulted in noa-detactable results for TPH <br /> constaacsis. Metbods of p mvmg graw4waar(if performed)from the forma'taut pit prior to collecting <br /> groundwater sample apparently were cot forwarded to PHS-EHD for evaluation prior to their living(if <br /> wan=64 &W closure of T-2 sire. Current Law mWinx all sites to be leafed Cor methyl tcti butyl <br /> cher OEM)prior w issuance of a aati6salim of doure by PHS-EHD. <br /> The PHS-EHDmidicat9d that father asrnsntera work was needed to areamin cwntaotirnm so+uce,lateral <br /> and vertical extern impact to soil and groundwater. in addition, PHS-FIM has regmmd a well <br /> survey,which documents the locations ar all doawstic, municipal,industrial,agricultural and otber wells <br /> within a 2,00046ot radius of the site.One domestic water supply well crdsts on the site. Application for <br /> reimbursement fxmn the Stale water ltawmua Control Board UST Clean Up Fund has not been filed ibr <br /> this Sire. <br /> 67 E. 10th Street # Tnwy,CA 95376 <br /> 209.833.0758 # Fax 209.832.5152 <br /> wnghtCSpx acAxom Lic.9651501 ,t-PHtaMa# <br /> websit hstp.11 weinmwh.com/wright <br />