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s <br /> ii <br /> 06 <br /> copy . <br /> 3. <br /> ENVIROMETRIX <br /> Envirc)r)MerltQl Consultants <br /> June 29, 1994 <br /> San Juaquin County Health Ce:;4 Services <br /> h <br /> Department of Environmental Health, Uni , <br /> P.O. Box 0388 <br /> Stockton, California, 95201-3$8 <br /> j <br /> t ' <br /> WORKPL 4N <br /> R1Px1N RR()P <br /> V 174-02!, ;j <br /> LIFORNIA <br /> !94111 i <br /> i;[yr t Ix Corporation(::' . :) is working for a client who is in interested in purchasing <br /> operty (Assors Parcel Number 114-020-02) and they want to investigate areas of <br /> possible contamination at the site. 1n 1087 a diesel underground storage tank(UST)was <br /> removed from the site, and no evide- .s been found to indicate that soil samples were <br /> ollected during removal. Previous soil sampling performed in 1989 was too shallow to I <br /> determine if soil had been impacted. EMC is proposing to drill borings around the former <br /> UST location, and collect soil sample; r }. .�'j sis. <br /> A hollow stem auger will be used to advance three borings in the vicinity of the USS'. The <br /> B i^ <br /> fir, ., -ing will tie as close to the center of the former UST location as possible. The <br /> � <br /> l or<a, :',! he located on either side of the tank within 10 feet of the , <br /> t. "ation, if k 3r on 10 to 15 foot centers if the exact tank location cannot be �5' <br /> .;ned. T' ngs will be advanced to at Least $ feet or 2 feet below the watertable <br /> shalle",f� 5 feet. Borings will be continuously cored from 5 feet to the depth <br /> � e map slowing the proposed boring locations is attached. <br /> D=P th of the will and 0 4s field screened for organic vapors using <br /> �.' eCi livafc ,tr,� If c )n . . .,.4-on is found based on observations or <br /> f', �cvecnins, a four fi boar,;. i",ay be i -;,red to delineate the limits of contamination. <br /> S. t! samples,- -,cillected a spl)� ;goon sampler lined with brass tubes. Two soil LA <br /> F <br /> p <br /> samles from � . r ,: `��}e bonny.. will b� ;elected 4,, analysis based on the OVA readings <br /> i <br /> or, if no readings arc nosed, the.- iamples will be collected f-nm 5 feet and immediately <br /> above the watertable. Samples will be analyzer' fjr Total Petroleum Hydrocarbons as <br /> diesel and bez►�ene, t luone. f [S1i°ane ,rid N `. nc3 u3ing the appropriatc LU.1iT <br /> approved methods :p <br /> A � <br /> D Industrk:�l edulevcard west sncrrA. BZW (Q16) 375-1000 . FAX (9)6)f37�- �� <br />