Laserfiche WebLink
1 <br /> TABsc 1 - CHECKLIST OF REQUIREDbATA <br /> FOR NO FURTHER ACTION REQUESTS AT UNDERGROUND TANK SITES <br /> Site Name and Location: Acme Saw& Industrial Supply, 1204 E. Main Street,Stockton, San Joaquin County <br /> NA 1. Distance to production wells for municipal, domestic, agriculture,industry Sensitive receptor survey not required. Soil <br /> and other uses within 2000 feet of the site; only case. <br /> Y� 2. Site maps, to scale, of area impacted showing locations of former and existing tank systems, Two 500-gallon USTs <br /> excavation contours and sample locations, boring and monitoring well elevation contours, removed in 1993. <br /> gradients, and nearby surface waters, buildings, streets, and subsurface utilities; Contamination in soil only. <br /> 1999 soil borings ND. <br /> 3. Figures depicting lithology(cross section), treatment system diagrams; Sand 0- 10' <br /> Silt 10-30' <br /> 4. Stockpiled soil remaining on-site or off-site disposal(quantity); Stockpile reused as backfill in 1993. <br /> NA 1 5. Monitoring wells remaining on-site, fate; No monitoring wells installed,soil case only. <br /> NA 6. Tabulated results of all groundwater elevations and depths to water,- Groundwater not encountered during tank removal <br /> and 1999 site investigation. <br /> Q7. Tabulated results of all sampling and analyses: Only soil samples collected. Highest concentrations found at 10'bgs <br /> during 1993 tank removal. TPHg, BTEX, and MtBE not detected in 1999 <br /> Y❑Detection limits for confirmation sampling soil samples. <br /> Lead analyses <br /> NA 8. Concentration contours of contaminants found and those remaining in soil 1999 soil boring advance to 30'bgs, with <br /> and groundwater, and both on-site and off-site: no contaminants detected. <br /> NA Lateral and TA Vertical extent of soil contamination <br /> NA Lateral and FKA-1 Vertical extent of groundwater contamination <br /> NA 9•Zone of influence calculated and assumptions used for subsurface No contaminants detected during 1999 soil <br /> remediation system and the zone of capture attained for the soil and boring. <br /> groundwater remediation system; <br /> 10.Reports/information IV]Unauthorized Release Form NA QMRs(Dates) <br /> ❑Y Welland boring logs NA PAR NA FRP FN_A_j Other(report name) <br /> NA 11.Best Available Technology(BAT) used or an explanation for not using BAT, <br /> l <br /> NA 12.Reasons why background waslis 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 /> 15.Rationale why conditions remaining at site will not adversely No contamination associated with 1993 release found <br /> impact water quality, health, or other beneficial uses,and during 1999 site investigation. <br /> NA 16.WET or TCLP results <br /> By.- Comments: This is a soil case only. TPHg at 5.7 mg/kg,xylene at.10 mg/kg, ethyl benzene at.0058 mg/kg and lead <br /> flU at 55 mg/kg detected in soil when the tank was removed in 1993. in 1999, a soil boring was advanced 30 feet bgs <br /> Dat and revealed no contaminants, including MtBE. Groundwater was not encountered during tank removal and the soil <br /> G boring operation. Based on this information, we concur with San Joaquin County's closure recommendation. <br />