Laserfiche WebLink
TABLE 1 - CHECKLIST OF REQUIRED DATA ' <br /> FOR NO FURTHER ACTION REQUESTS AT UNDERGROUND TANK SITES <br /> Site Name and Location: East Bay Municipal Utilities Dist.-Stockton Serv.Center, 1804 W. Main, Stockton, San Joaquin <br /> y� 1. Distance to production wells for municipal, domestic, agriculture, industry and 1 domestic well 0.5 miles <br /> other uses within 2000 feet of the site; <br /> D2. Site maps to scale of area impacted showing locations of former and existing tank systems one 1,000-gall6n diesel <br /> excavation contours and sample locations, boring and monitoring well elevation contours. two 1,000-gallon regular gas <br /> gradients and nearby surface waters buildings streets and subsurface utilities one 1,000-gallon unleaded <br /> gas <br /> a3. Figures depicting lithology(cross section), treatment system diagrams; <br /> 0 4. Stockpiled soil remaining on-site or off-site disposal(quantity); 100 yd3, disposed at Waste Management, Inc. <br /> Q5.Monitoring wells remaining on-site, fate; 9 monitoring wells remain open <br /> 6. Tabulated results of all groundwater elevations and depths to water, 1 to 13-ft bgs <br /> a7.Tabulated results of all sampling and analyses: <br /> MDetection limits for confirmation sampling <br /> nLead analyses <br /> FTJ 8. Concentration contours of contaminants found and those remaining in soil Contaminated soil detected in MW 4,5,6,7,8 <br /> and groundwater, and both on-site and off-site: extends to 15-ft bgs in MW-8. <br /> y Lateral and FYI Vertical extent of soil contamination <br /> Groundwater contamination extends <br /> y Lateral and y Vertical extent of groundwater contamination laterally 85 ft X 50 ft area and to a depth of <br /> 24 to 26.5-ft bgs. <br /> FNA9.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 /> NA 10.Reports/information FlUnauthorized Release Form 7/20/88 &MRs(Dates) 5 March 92 to May 96 <br /> 0 Well and boring logs FYI PAR 3 May 91 RN FRP aOther(report name) Closure Rpt 5/96 and 11/96 <br /> 11.Best Available Technology(BAT)used or an explanation for not using BAT,• Removed tanks and overexcavated <br /> 0 12.Reasons why background wads unattainable using BAT, Low concentrations and quantity remaining in soil and <br /> groundwater <br /> 0 13.Mass balance calculation of substance treated versus that remaining, 20.46 lbs TPH-g, 1.04 lbs BTEX <br /> Q14.Assumptions, parameters, calculations and model used in risk Benzene will reach the receptor with a concentration of <br /> assessments, and fate and transport modeling, 0.023µg/I within 100 years. <br /> 15.Rationale why conditions remaining at site will not adversely low concentrations and quantity of petroleum <br /> impact water quality, health, or other beneficial uses;and contaminants remain in the soil and groundwater <br /> NA 1 16.WET or TCLP results <br /> By: Comments:Remaining concentrations and quantity of contaminants remaining in soil and <br /> groundwater are tabulated in the San Joaquin County Case Closure Summary. <br /> Da : <br />