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I <br /> 12 May 2005 <br /> AGE-NC Project No 96-0229 <br />' Page 6 of 6 <br />' monitoring event is tentatively scheduled for 21 June 2005 <br /> • Ground water monitoring of the subject site should be performed concurrently with Pacific <br /> Mini Mart (4511 Pacific Avenue) <br /> 1 <br /> AGE has tentatively made arrangements with Mr Mike Manassero,property owner at 4415 Pacific <br />' Avenue(formerly Guidi's Pizza Restaurant),for installation of one ground water extraction well on <br /> his property An access agreement was mailed to Mr Manassero on 09 May 2005, a copy of the <br /> `signed'access agreement and a SJCEHD well permit application for the above mentioned extraction <br />' well is forthcoming <br /> Based on the data collected during the fourth quarter 2004,additional ground water monitoring wells <br />' are not warranted at this time and the existing monitoring well network may be sufficient to complete <br /> a site Problem Assessment Report (PAR) <br /> fDue to the significant northeastward MTBE migration evident at well MW-9 over the past three <br /> quarters,AGE recommends installation and operation of an interim ground water extraction,pump- <br /> and-treat remediation system, utilizing EW-1 and additional extraction wells as needed, to inhibit <br />' further migration of dissolved petroleum hydrocarbon-impacted ground water off-site towards the <br /> east and northeast Remediation of the dissolved ground water plume at 4511 Pacific Avenue,within <br />' 1,000 feet of the site, has proven generally successful at diminishing the lateral migration of <br /> contamination off-site and reduced the dissolved concentrations of petroleum hydrocarbons and <br /> MTBE <br />' AGE also recommends installation and operations of an interim soil vapor extraction (SVE) <br /> remediation system in the area of the highest petroleum hydrocarbon-impacted soil to inhibit further <br />' hydrocarbon-impacted soil(secondary source)from leaching into the ground water With regulatory <br /> concurrence,AGE will prepare a work plan detailing design and operation of an interim(1) ground <br /> water pump-and-treat system and (2) SVE system <br /> 1 <br /> 6.0. LEMTATIONS <br /> Our professional services were performed using that degree of care and skill ordinarily exercised by <br /> environmental consultants practicing in this or similar localities The findings were based mainly <br />' upon analytical results provided by an independent laboratory Evaluations of the <br /> geologic/hydrogeologic conditions at the site for the purpose of this investigation are made from a <br /> limited number of available data points(e g ground water samples),and subsurface conditions may <br /> vary away from these data points No other warranty, expressed or implied, is made as to the <br /> professional interpretations, opinions, and recommendations contained in this report <br />' Advanced GeoEwnronmental,Inc <br />