Laserfiche WebLink
s - <br /> r <br /> Chaney,Wanton $ Il CCaill (LLC) <br /> The distribution and rationale for the sampling locations are summarized as fnBlows: <br /> PROPOSEv SOIL BORING APPR XIMATE.LOC:ArIOAI PREL1M7NARY RA7"IONALE <br /> OF SOIL BORING'. FOR THE BORING LOCATION <br /> SB-1 In the approximate center of the If Petroleum hydrocarbons were, <br /> former UST excavatinn,an initial still present,the boring location <br /> sail.saingles will be c oliected and soil samples should aid in the f <br /> immediately below the pea gravel identification of the vertical <br /> backfill. A second soil sample crttcnt of constitucirtc benraih the <br /> will be collected at the same farmer UST exca.%tum. i <br /> location,approximately 5 to 10 <br /> feet below the initial sum le <br /> S$-2 At a location approximately?S to Confirra the absence of elevated <br /> 10 feet beyond the farmer V,ST petrol==hytirccarbon <br /> excavation,two soil samples will concentrations in soils beyond the <br /> he eolleeted.. 'Mesesamplcs will excavation boundary- The 10- <br /> be obtahmd at depths of foot depth sample shrnuld be <br /> approximately 10 and 15 feet similar to the base of the former <br /> below grade. The actual=f6ce : UST excavation. The 15-foot <br /> location will be subject to aoaess depth sample should aid in the <br /> limitations,including the possible identification of the vertical. d <br /> presence of f3cil icy utilities or extent of constituents,if present. <br /> structures. <br /> i <br /> Soil boring installation permits will be obtained fiom the San Joaquin County pHSIEHD { <br /> once the Work Plan has been appruved and the pre-field inspection described below has i <br /> been accomplished. <br /> Conduct.Field Activities <br /> Prior to conducting subsurfacelin#rusive field acthrities,CW&M will inspect the Site with. y <br /> facility personnel to evaluate the specific locations pro' scd'for soil sampling activities. <br /> In addition,a private utility locator service will be retained to cls the proposed <br /> sampling lotions for detectable utilities prior to drilling. <br /> Soil Boring Installation <br /> CW&M will utilize the services of a drilling subcontractor, who will employ standard . <br /> hollow-stem auger techniques to install the soil borings. The subcontractnr will utilize a l <br /> clean,2.5-inch diameter split spoon sampler that will be equipped with clean stainless <br /> steel or brass liners. Collected soil samples will lye sealed at both ends with either Teflon <br /> sheets or clean aluminum foil, and tlzert capped with tight fitting,clean,plastic-end-caps. <br /> The boreholes, worker breathing zone., and selected.soil samples will be field screened <br /> using a portable Photo Ionization Detector(PID)delrice to monitor for the possible <br /> presence of volatile organic.compounds. <br /> A description of the subsurface deposits penetrated during drilling will be prepared by the <br /> field geologist onsite,and provided with other field'information on a soil boring logs. <br /> The soil boring logs and other field documentation data'such as PID measurements will <br /> be provided in the Former VFO- Site Assessment Addendum Report_ <br /> DF10010t.SicPH,wkP.011800 5 530.758.8128 v/f <br /> rocgroup(atearthi ink,net <br /> a C1 BZT8BSLQES •41ao0 dWQS , , dna,a0., OOH 446 t*0 CIO Va ul�r <br />