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TAE 1 - CHECKLIST OF REQUIRED LATA <br /> FOR NO FURTHER ACTION REQUESTS AT UNDERGROUND TANK SITES <br /> Site Name and Location: Corral Hollow Sanitary Landfill, Corral Hollow Road/1-580, Tracy, San Joaquin County <br /> NA 1. Distance to production wells for municipal, domestic, agriculture, industry and <br /> other uses within 2000 feet of the site; <br /> o 2. ,Site maps. to wale, nfama impaCfc 4 ehrny%n /OCatinna of 1,600-gallon diesel tank <br /> q fom�er and existing tanks sty ems. g <br /> excavation contours and sample locations boring and monitoring well elevation contours, removed 2196 <br /> gradients, and nearby surface waters, buildings. streets, and subsurface utilities; <br /> 0 3.Figures depicting lithology(cross section), treatment system diagrams, <br /> o 4. Stockpiled soil remaining on-site or off-site dis osal(guantity) 200 cu yd stockpiled soil aerated to 60 mg/kg TPH-d, and <br /> used to backfill the tank pit <br /> H5. Monitoring wells remaining on-site, fate; <br /> Q6. Tabulated results of all groundwater elevations and depths to water, 68 to 75 ft bgs <br /> o7.Tabulated results of all sampling and analyses: Contaminated soil excavated to 23 ft bgs Confirmatory soil samples <br /> FN Detection limits for confirmation sampling <br /> ND for petroleum contaminants including MTBE <br /> oN Lead analyses <br /> FY-1 8. Concentration contours of contaminants found and those remaining in soil Limited to excavated soil <br /> and groundwater, and both on-site and off-site: <br /> Ry Lateral and y Vertical extent of soil contamination <br /> N Lateral and rNj 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 /> o10.Reports/information Q Unauthorized Release Form 4/15/96 Q QMRs(Dates) <br /> o Well and boring logs E PAR FRP N]Other(report name) Diesel Tank Removal 1116/97 <br /> Q11.Best Available Technology(BAT) used or an explanation for not using BA T* Removed tank and excavated to ND 23 ft <br /> bgs <br /> NA 12.Reasons why background wasrs unattainable using BAT, <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 /> 0 15.Rationale why conditions remaining at site will not adversely Petroleum contamination was removed from this site and <br /> impact water quality, health, or other beneficial uses;and replaced with backfill having 60 mg/kg TPH-d. This <br /> concentration is too low to impact water quality. <br /> FNAJ 16.WET or TCLP results <br /> ByComments. San Joaquin County has determined that no further site investigation or remedial action <br /> , is required at this site, and Board staff concur. Only 60 mg/kg TPH-d remained in the stockpiled <br /> Dater soil that was used at backfill in the tank pit The original contamination was excavated to ND. <br />