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i <br /> CJ <br /> I <br /> TABLE 1 - CHECKLIST OF REQUIRED DATA <br /> FOR NO FURTHER ACTION REQUESTS AT UNDERGROUND TANK SITES <br /> Site Name and Location: Village West Marina, 6649 Embarcadero Drive, Stockton, San Joaquin county <br /> YO 1. Distance to production wells for municipal, domestic, agriculture, industry and site adjacent to a slough. Irrigation and <br /> other uses within 2000 feet of the site; production wells 2,250 and 5,250 ft <br /> 0 2. Site maps to scale of OM impacted n <br /> sh wio/Dear <br /> �and existing tank systems <br /> excavatio_ n contou and sample locations, bonno and monitoring well elevation contours <br /> gradients, and nearby surface waters h„piling i et . and subsurface utilities; . <br /> 0 3. Figures depicting lithology(cross section), treatment system diagrams; Crude cross-section,plume is larger than <br /> depicted Highest concentrations depicted. <br /> Q4. Stockpiled soil remaining on-site or off-site disposal(quantity); <br /> _ I <br /> a5.Monitoring wells remaining on-site, fate; 9 5 wells need to be destroyed <br /> F6. Tabulated results of all groundwater elevations and depths to water, 13 to 17-ft bgs <br /> 0 7.Tabulated results of all sampling and analyses: <br /> NN <br /> Detection limits for confirmation sampling <br /> Lead analyses <br /> O8. Concentration of contaminants found and those remaining in soil and Impacted soil appears to occur at 20 ft bgs <br /> groundwater, and both on-site and off-site: as groundwater contamination increases at <br /> N Lateral and N Vertical extent of soil contamination this depth. Groundwater contamination <br /> N Lateral and BVertical extent ofgroundwater contamination extends beneath the condominiums. <br /> f <br /> NA 9.Zone of influence calculated and assumptions used for subsurface <br /> remediation system and the zone of capture attained for the soil and <br /> groundwater remediation system; . <br /> 10.Reports/information a Unauthorized Release FormT RN QMRs(Dates) . <br /> ❑N Well and boring logs PAR ❑N FRP Other(report name) <br /> 9Y� <br /> Y ] 11.Best Available Technolo (BAT) used or an explanation for not using BAT,, Excavated to 18 ft bgs. <br /> 0 12.Reasons why background wasrs unattainable using BAT, Excavation extend until integrity of levee was threatened <br /> (Corps of Engineers). <br /> _ NA 13.Mass balance calculation of substance treated versus that remaining; <br /> 14.Assumptions,parameters, 'calculations and model used in risk <br /> assessments, and fate and transport modeling; <br /> i <br /> Q15.Rationale why conditionsremaining at site will not adversely Ground water flow is away from the slough,and there <br /> impact water quality, health, or other beneficial uses;and are no nearby wells. No benzene was detected in the <br /> slough water(could have been diluted). <br /> NA 16.WET or TCLP results <br /> FNA r <br /> i <br /> By, Comments:.The lateral and vertical definition of soil and groundwater contamination have not been defined. <br /> Groundwater contamination extends beneath the condominiums. Better information is needed to calculate the <br /> Dato: mass balance,but is not expected to influence additional remediation at this site. PHS/EHD voted 2/3 to close <br /> Q the site. Board staff concur with this decision. <br /> I <br />