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Project No. 58080-05-02 <br /> September 30, 1994 <br /> Page 3 <br /> the north and east of the site. Based on the distribution of residual TPHg and TPHd in soi], soil <br /> rn and e�nhanred init}c bioremediation appear to be the most appropriate remedial <br /> technology to reduce the:mass of petroleum hydrocarbon in the vadose Zone. Therefore, th <br /> following"Workpn"includes the installation of additional.vap„gr ectracton wethe performance <br /> of a mar Str '4n 'Dildtt+es#, an+evaluation of alternative remedial technologies; and the- <br /> Pr ion <br /> hepreparation of a Problem Assessment Report (PAR). A PAR will be prepared if the proposed <br /> additional assessment is successful in establishing the limits of petroleum.hydr+ arbouis-in;sa and: <br /> groundwater. <br /> WORKPLAN <br /> Based upon the above information and the specific requirements of,the F`DfC and dieAMMM <br /> Geocon proposes the following supe of services: <br /> k f l efield A 'ydiiii: <br /> Prepare and submit wellpermit applications and fees to the SIC IIS to obtain we- <br /> parrots for two groundwater monitoring wells and three to five vapor extraction <br /> �.�." -- <br /> 3 wells. <br /> • Prepare and submit encroachment permit applications and traffic plant to the City <br /> of JAdL Public Warks Department for the installation of two groundwater <br /> t+11 monitoring wells in the public right-of-ways. <br /> • Contact the local public utilities via Underground Service Alert, to -attempt to <br /> delineate subsurface public utilities and conduits in proximity to the proposed <br /> boring/wen locations, <br /> • Retain the seNices of a State of California: C-57licensed drilling.company to <br /> perform the sol borings and well installati.ans. <br /> Task 19 -Q=gN siW u <br /> Perform a geophysical survey ta-attempt t e� ` ` abandon+ed US and <br /> product/vent2associated with the former service station operations at the site.. <br /> The.survey would be performed using ground enetratiina: at a selected <br /> grid interval across the parking,perimeter landscaping, sidewalk and adjaceant street <br /> areas. ;Prior to the GPR survey,;the existing utilities would be located user <br /> g.pipe <br /> and cable locating equipment. <br /> 'f'ask III- Ed Morim. <br /> A eOt Oxpiuratory borings(G13-6 through GB4012} MW4 and MW-5:14t the <br />