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y - <br /> `ue� <br /> TABLE 1 - CHECKLIST OF REQUIRED DATA <br /> FOR NO FURTHER ACTION REQUESTS AT UNDERGROUND TANK SITES <br /> Site Name and Location: Edward & M Pitts, 203 S. Lincoln, Manteca, San Joaquin County <br /> NA 1.Distance to production wells for municipal, domestic, agriculture, industry <br /> and other uses within 2000 feet of the site, <br /> 0 2.Site maps, to scale of area impacted showing locations of former and existing tank systems_ 350 gallon gasoline tank <br /> excavation contours and sample locations boring and monitoring well elevation contours, removed in April 1986. <br /> gradients, and nearby surface waters buildings Streets and subsurface utilities; <br /> Y❑ 3. Figures depicting lithology(cross section), treatment system diagrams; 5 soil borings to 25 and 30 ft bgs <br /> FNAJ 4. Stockpiled soil remaining on-site or off-site disposal(quantity); no mention of stockpiled soil on-or off-site. <br /> El5. Monitoring wells remaining on-site, fate; 1 needs to be destroyed <br /> 0 6. Tabulated results of all groundwater elevations and depths to water, 17.83 to 20 ft bgs <br /> FY 7.Tabulated results of all sampling and analyses: Groundwater samples collected using hydropunch 10/97 and <br /> HY <br /> Detection limits for confirmation sampling <br /> monitoring well 11/97. <br /> Lead analyses <br /> YD 8. Concentration contours of contaminants found and those remaining in soil Soil contamination:8,100 mg/kg TPH-g, <br /> and groundwater, and both on-site and off-site: 0.375 mg/kg benzene, 2.55 mg/kg toluene, <br /> YF Lateral and Y Vertical extent of soil contamination 50.5 mg/kg xylene,34.1 mg/kg lead,ND <br /> ethyldibromide beneath tank. Ground <br /> FY Lateral and y Vertical extent of groundwater contamination water. ND for petroleum contaminants. <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 /> a 10.Reports/information Yl Unauthorized Release Form 11/4/92 ❑Y QMRs(Dates) 10/97 borings and 11/97 MW-1 <br /> a Well and boring logs [N� PAR a FRP M Other(report name)Summary Report 12/17/97 <br /> D11.Best Available Technology(BAT)used or an explanation for not using BAT; No direction of ground water flow/ <br /> hydropunch samples in all directions <br /> NA 12.Reasons why background wasris unattainable using BAT, 0.6µg/1 toluene detected in gw samples collected 11 years <br /> after tank removal, fairly tight soils <br /> NA 13.Mass balance calculation of substance treated versus that remaining; <br /> NA 14.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 Hydrocarbon contaminated soil limited to beneath the <br /> impact water quality, health,-or other beneficial uses;and tank,and low concentrations of toluene contaminated <br /> ground water was detected. <br /> NA 16.WET or TCLP results <br /> By:4 Soil contamination:8,100 mg/kg TPH-g, 0.375 mg/kg benzene,2.55 mg/kg toluene,50.5 mg/kg xylene,34.1 <br /> mg/kg lead,ND ethyldibromide beneath tank. Ground water contamination: ND for petroleum contaminants. <br /> Dat <br /> � / <br />