Laserfiche WebLink
r � ,• <br /> TABLE 1 - CHECKLIST OF REQUIRED DATA <br /> FOR NO FURTHER ACTION REQUESTS AT UNDERGROUND TANK SITES <br /> Site Name and Location: County Mart Texaco,34243 Chrisman Road,Tracy, San Joaquin Co. <br /> NA 1.Distance to production wells for municipal, domestic, agriculture, industry <br /> and other uses within 2000 feet of the site; <br /> Q2. Site maps to scale of area impacted showing locations of former and existing tank systems. 3 tanks& associated piping, <br /> excavation contours and sample locations. boring and monitoring well elevation contours, &dispenser island removed <br /> gradients, and nearby surface waters, buildings. streetsand subsurface utilities, 1/95 <br /> y❑ 3. Figures depicting lithology(cross section), treatment system diagrams, 4 borings 40 ft,55 ft and 23 ft <br /> 0 4. Stockpiled soil remaining on-site or off-site disposal(quantity); 75 cu yds disposed on-site for grading. Excavation <br /> extended to 31 ft bgs <br /> Q5.Monitoring wells remaining on-site, fate; <br /> 0 6. Tabulated results of all groundwater elevations and depths to water, >55 ft bgs at site SJ Co.Flood Control& Water <br /> Conservation District Map>120 ft bgs, w-SW flow <br /> 0 7.Tabulated results of all sampling and analyses: Contamination under UST and piping: 600 mg/kg TPH-g. 180 mg/kg <br /> TPH-d,0.04 mg/kg benzene, 7.4 mg/kg toluene, 8.0 mg/kg <br /> Fy Detection limits for confirmation sampling ethylbenzene,52 mg/kg xylene, 7.6 mg/kg lead removed during the <br /> ay Lead analyses excavation <br /> Y ] 8. Concentration contours of contaminants found and those remaining in soil Soil Contamination extends laterally& <br /> and groundwater, and both on-site and off-site: vertically from beneath the tanks to B-2 at <br /> y Lateral andy Vertical extent of soil contamination 55 ft bgs. GW contamination was not <br /> detected in a domestic well. <br /> rNj Lateral and NJ 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 /> 0 10.Reports/information ny Unauthorized Release Form 1/24/95 E QMRs(Dates) <br /> El Welland boring logs 0 PAR FNJ FRP 0 Other(report name) Closure Rpt 10/16/96 <br /> YQ 11.Best Available Technology(BAT)used or an explanation for not using BA T'. Removed tanks and excavated the soil <br /> 12.Reasons why background wads unattainable using BAT, Low concentration of soil contamination at depth. <br /> 0 13.Mass balance calculation of substance treated versus that remaining; 0.00295 gal benzene <br /> NA 44.Assumptions,parameters, calculations and model used in risk <br /> assessments, and fate and transport modeling, <br /> Q15.Rationale why conditions remaining at site will not adversely Nearby domestic well nondetect for petroleum <br /> impact water quality, health, or other beneficial uses;and contamination. <br /> NA 16.WET or TCLP results <br /> FNA <br /> By: /; Comments: Remaining soil contamination: bottom of excavation 240 mg/kg TPH-g, 0.12 mg/kg <br /> benzene, 3.0 mg/kg toluene, 1.5 mg/kg ethylbenzene, 21 mg/kg xylene. Boring B-2 at 45 and 55 It <br /> Dat bgs had nondetect TPH-g, 0.39 mg/kg MTBE, 0.036 mg/kg toluene, 0.008 mg/kg ethylbenzene, 0.047 <br /> xylene. GW contamination not detected in a nearby domestic well. <br /> r <br /> l�r�� <br />