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'1011, AND GROUNDWATER iN'vESTIGAT1ON <br /> • <br /> k N D SFN-4TIVF RE( LPTOR IsURVf Y RIF PORT <br /> 11[ + RMAN & HELEN'S MARINA <br /> VFNIClk ISLAND I+ERRY <br /> Iti I OC'K I'ON, C ALIFORNIA <br /> October 2, 2000 <br /> I <br /> 1 IN fRODt ( 'l 10N <br />' Condor ! artin I LLhnoloiziLs [IAL (( undcir} LOiiduLted soil and groundwatc r snvLstl�_aLiori ,1LtiN,1t1Ls from <br /> SLptLmbLr I 1 Ihtou.!h SLptLmbLr 13 11-000 at 11crrnan & IILILn s Marina lolated at thL VLnILC Island <br /> I-Lrry itLar titoLl.Ion I d,lorni,1 (1 IgurL 1 AppLndix A) I11 ,oil and groundwater sampling aLtivities <br /> werL LonduLted usnnt dlrLCt push ((leoprobe) hand augLr and hollow-stem auger techniquLs to advanLC <br /> 13 borings at thL site (Borings DP-1 through DP-y SP-I and ITP-1 through ITP-3) Soil sampling was <br /> LonduLtcd with dtrLLt push Loring, C alifoinia-modified split-spoon or SimulprobL tLLhniques, as <br /> I neLLssary (iioundwater sampling was conduLtLd with the dirLLt push ((iLoprobe) groundwater sampling <br /> tool (hydropun(.h St-,IC) ( ondoi prepared this ieport at the request of Mr Andrew Smith of Hen-nan & <br /> Helen s Marina pursuant to a directive from Mr Ron RowL of the San Joaquin County Public Health <br /> 'services I nvironmcntal Health Division (PITS/1,1117) in a letter dated June 30 2000 <br /> Ilse purpose of the %Mork was to holier Investigate thL cxtLnt of pLtrolLuin h_vdroLarbon Lontarntuatiori in <br /> • the cast portion of thL ,itf- and the propLrty (agricultural fiLld) ldjaLcnt to the Last portion of thL site <br /> (I igurL 2 NPPLndix A) In addition to thL soil and groundwater investigation aLtivitics a sensitive <br /> iecLptor sur,LV Wthin a 1000-toot radius of the site. was LonduLted 1 he purpose of thL survLv was to <br /> I Identity anv watLr wLlls surtaLL watLr bodies schools or other potentially sensitive rLCLptors within the <br /> survt__v boundary 111L fieldwork portion (driving reconnaissanLL) of the sensitive receptor survey was <br /> LonductLd on DLcembcr 2 1998 [his report includes a description of the fieldwork and laboratory <br />' analyses Londucted and provides recommendations for additional work based on the results Appendix B <br /> of this report Lontains site background information Appendix C of this report contains geological logs <br /> foi the borings installed Laboratory analytical results of the soil and groundwater samples collected <br />' from the borings are Included in Appendix D Documents pertaining to the Sensitive receptor survey are <br /> included in Appendix L All work LoinduLted by Condor was under the supervision of a Condor <br /> C alifornia Registered (,eologist <br /> 2 SITE BACKGROUND <br /> On ()ctobei 30 1991 Warren I (mines LXLavating, Inc of Ilio Vista, California, excavated and <br />' Iemovcd thiee underground storage tanks (US I s) trom the site (F igure 2 Appendix A) The LSTs (TK1 <br /> I K2 and I K3) Lontained gasoline and diesel fuel A small hole was found on the lower fill end of TK3 <br /> (diesel tank) PetrolLum staining and odors were noted in the soil beneath the former locations of the <br /> U'-)Ts Six soil samples were Lollected by ( ondor from the UST excavation at depths of 9 to 12 feet <br /> below the around surfaLe Laboratory analyses indicated elevated concentrations of total petroleum <br /> hydroLarbons quantified as gasoline (TPH-CJ) benzene, toluene, ethyl benzene and total xylenes <br />' (B-IFX) and total extraLtable petroleum hydrocarbons quantified as diesel (1LP11) were present in the <br /> soil samplLs <br /> 4r% Nuw <br />' �iJ CONDOR <br />