Laserfiche WebLink
196 <br /> / <br /> iown <br /> kpssoa�s y4AR5 a�11R <br /> Sery+ces µEE11NG EK15 <br /> �nvironmenlaS/�eotechn <br /> icC1S/Eng}nees+ng RE�tl1� <br /> View <br /> ENVIRONMENTAL HEALTH <br /> DIVISION rUI <br /> 'Third Floor a <br /> Services 304 E.w X88 Stockton CA 9S20t�0388 <br /> Mr. Harlin Knoll public Health P O. i3ox rton <br /> San 3oaquin County roved 1z � <br /> ental gealth Division p,pp At <br /> Environn' Third Floor Qenied ❑ ^LE" <br /> 304 East Weber Avenue, Conditions <br /> Stockton, California 95202 cam, <br /> Dated <br /> RE: Work Plan <br /> USPS's Stockton Vehicle Maintenance Facilit <br /> 3131 Arch Road <br /> Stockton, California <br /> Dear Mr. Knoll: <br /> at the <br /> We are pleased to pnance resent this work plan to evaluate subsurface condity tions <br /> located ated <br /> States Postal Service's (USPS's) r Sto ton Vehicle <br /> his le Main•tion is not being performed in <br /> 3131 Arch Road in Stockton, <br /> association with the UST clean-up fund. <br /> THE PROJECT <br /> We understand that the San Joaquin County Public <br /> he extent of doocument idHealth <br /> Division (SJCEHD) has requested that the USPSdelineate <br /> contamination at the site and investigate the areas previously not "properly" addressed <br /> during the underground storage tank (UST) removals. In addition, the SJCEHD has <br /> requested submittal of a closure plan for the underground piping associated with the <br /> motor oil and waste oil USTs that was left in-place beneath the VMF. <br /> SCOPE OF WORK <br /> We will perform the following scope of work to further evaluate subsurface conditions <br /> beneath the four former USTs, diesel fuel dispenser, and associated conveyance piping. <br /> Pre-Field Activities <br /> Prior to beginning work, a drilling permit application will be submitted to the appropriate <br /> regulatory agency for their approval. We also will contact Underground Service Alert <br /> (USA) to attempt to locate public underground utilities in the area of our exploratory <br /> borings. <br /> Subsurface Exploration of UST and Fuel Island Areas <br /> Our field engineer or scientist will direct a subsurface exploratory program, supervise, log, <br /> and sample five exploratory borings to further evaluate soil quality beneath the four USTs, <br /> diesel fuel dispenser, and dispenser conveyance piping. Four of the borings will be <br /> located approximately 9 feet from the former UST excavation and will be advanced at an <br /> angle of approximately 30° from vertical to collect samples from beneath the concrete <br /> anchor slabs of the USTs. The borings will be advanced to a vertical depth of <br /> approximately 27 feet. The remaining boring will be located approximately 6 feet from the <br /> '/85 Locust 5lteel, Suite 10 Pusadeno, CA 91 106.1614 T'e!: 626.396.!490 Fox:626.396.1491 Email: rrrcjilto,Iowr)ey.com .f j1r::/w vw�ov,r ey ;,n <br />