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TA,,,LE 1 - CHECKLIST OF REQUIRE...DATA <br /> FOR NO FURTHER ACTION REQUESTS AT UNDERGROUND TANK SITES <br /> Site Name and Location: Stockton Developmental Center, 510 Magnolia Street, Stockton,San Joaquin Co. <br /> N 1. Distance to production wells for municipal, domestic, agriculture, industry No well survey completed for this site. <br /> and other uses within 2000 feet of the site; SJCEHD indicated that there was limited <br /> contamination not requiring clean-up. <br /> 0 2. Site maps, to scale, of area impacted showing locations of former and existing tank systems, Documents viewed in the <br /> excavation contours and sample locations, boring and monitoring well elevation contours, SJCEHD casefi/e. <br /> gradients, and nearby surface waters, buildings, streets, and subsurface utilities, <br /> N ] 3. Figures depicting lithology(cross section), treatment system diagrams; <br /> EYD 4. Stockpiled soil remaining on-site or off-site disposal(quantity); Off-site disposal of 317 tons of TPHd contaminated soil. <br /> EN 5. Monitoring wells remaining on-site, fate; No monitoring wells were installed at the site. <br /> a6. Tabulated results of all groundwater elevations and depths to water, N/A-No groundwater data for this site <br /> a 7.Tabulated results of all sampling and analyses: <br /> The files reviewed at the SJCEHD contained all sampling results with <br /> FY Detection limits for confirmation sampling the appropriate detection limits. <br /> nN Lead analyses <br /> 0 8. Concentration contours of contaminants found and those remaining in soil Soil contamination is defined in the vertical <br /> and groundwater, and both on-site and off-site: and lateral directions by soil borings and <br /> ❑Y Lateral and y� Vertical extent of soil contamination excavation sampling. No groundwater <br /> samples were collected at this site. <br /> RN Lateral and 0 Vertical extent of groundwater contamination <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 /> Y� 10.Reports/information [y Unauthorized Release Form a QMRs(Dates) <br /> Well and boring logs ❑N PAR Q FRP 0 Other(report name) Characterization Report <br /> Y� 11.Best Available Technology(BAT)used or an explanation for not using BAT; SJCEHD determined contaminant <br /> concentrations in soil to be low risk. <br /> NA 12.Reasons why background wasps unattainable using BAT, <br /> FNA <br /> 13.Mass balance calculation of substance treated versus that remaining; Approx 100-150 cu yds of TPHd impacted soil <br /> remain in place at the site. <br /> NA 14.Assumptions,parameters, calculations and model used in risk <br /> assessments, and fate and transport modeling, <br /> 0 15.Rationale why conditions remaining at site will not adversely TPHd,and fuel oil impact only.Analytical results indicate <br /> impact water quality, health, or other beneficial uses,and that the contamination does not extend below 15-20 feet <br /> bgs. Groundwater is at 45 feet bgs <br /> NA 16.WET or TCLP results <br /> Nr6QC <br /> By; Comments:All indications by SJCEHD are that the contamination at the site is located in the immediate area of the <br /> former impacted tanks. Some minor overexcavation was completed, and 317 tons of diesel impacted soil was <br /> Date' removed from the site under manifest. This does appear to be a low risk, soil only site, however, no PNA analysis <br /> g was completed. Corrective Action should be reviewed if land use changes. <br />