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TAB 1 - CHECKLIST OF REQUIRED DATA <br /> FOR NO FURTHER ACTION REQUESTS AT UNDERGROUND TANK SITES <br /> Site Name and Location: 7-Eleven, 2360 Grant Line Road,Tracy,San Jdaquin County(##391147) <br /> © 1. Distance to production welts for municipal, domestic, agriculture, industry and Six supply wells identified within 2,000 feet,Field reconnaissance confirmed five. All <br /> other uses within 2000 feet of the site; wells are crossgradient and not threatened. <br /> Y <br /> 2. Site maps, to scale, of area impacted showing locations of former and existing tank systems, In reports. <br /> excavation contours and sample locations, boring and monitoring well elevation contours, <br /> gradients, and nearby surface waters, buildings, streets, and subsurface utilities; <br /> 3. Figures depicting lithology(cross section), treatment system diagrams; In reports. <br /> 4. Stockpiled soil remaining on-site or off-site disposal(quantity); All removed and properly disposed of. <br /> 5. Monitoring wells remaining on-site, fate; All site monitoring wells will be destroyed following Regional Board closure <br /> concurrence. <br /> 6. Tabulated results of all groundwater elevations and depths to water, In reports. <br /> 7.Tabulated results of all sampling and analyses: In reports. <br /> Y Detection limits for confirmation sampling <br /> Lead analyses <br /> 8. Concentration contours of contaminants found and those remaining in soil Found in reports. Minimal residual <br /> and groundwater, and both on-site and off-site: concentrations pose no threat. <br /> 0 Lateral and ff] vertical extent of soil contamination <br /> El <br /> Lateral and 0 vertical extent of groundwater contamination <br /> Y <br /> 9. Zone of influence calculated and assumptions used for subsurface Source removal (USTs), groundwater <br /> remediation system and the zone of capture attained for the soil and removal (199,090 gal.), and monitoring <br /> groundwater remediation system; natural attenuation adequate to protect water <br /> quality goals and human health. <br /> ©10.Reports/information 0 Unauthorized Release Form © QMRs(Dates) <br /> Well and boring logs Fy7 PAR a FRP Other. Closure and Closure Addendum <br /> 11.Best Available Technology(BAT) used or an explanation for not using BAT,- UST removal, groundwater removal, and <br /> monitoring. <br /> 12.Reasons why background was/is unattainable using BAT, Achieved in most wells, remaining wells estimated to reach <br /> MCL in maximum of 7.2 years. <br /> ©13.Mass balance calculation of substance treated versus that remaining; In reports. <br /> 14.Assumptions, parameters, calculations and model used in risk In reports. <br /> 0 assessments, and fate and transport modeling; <br /> Ej 15.Rationale why conditions remaining at site will not adversely Remaining minimal subsurface contamination will not <br /> impact water quality, health, or other beneficial uses;and degrade groundwater beneficial uses or threaten human <br /> health and safety. <br /> 16.WET or TCLP results <br /> NA <br /> By: JIM Comments: The residual contamination remaining from the release does not pose a threat to sensitive receptors in <br /> the area, current groundwater beneficial uses, or threaten human health and safety. No further action is warranted <br /> Date: 9/29/09 for this site. <br />