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Tri Regional Recommendation Page 24 of 24 <br /> Appendix A <br /> WTABLE 1 - CHECKLIST OF REQUIRED DATA <br /> FOR NO FURTHER ACTION REQUESTS AT UNDERGROUND TANK SITES <br /> Site Name and Location ARCO 4493,205 N Center Street, Stockton <br /> ❑ 1 Distance to production wells for municipal, domestic, agriculture, industry and other uses within 2000 feet of the site, <br /> See Attachment D and Sensitive Receptor section of text <br /> 0 2 Site maps,to scale,of area impacted showing locations of any former and existing tank systems, excavation contours and <br /> sample locations,boring and monitoring well elevation contours, gradients,and nearby surface waters,buildings,streets, and <br /> subsurface utilities, <br /> Figure 2 <br /> 0 3 Figures depicting lithology(cross section), treatment system diagrams, <br /> See Attachment C <br /> ❑ 4 Stockpiled soil remaining on-site or off-site disposal(quantity), <br /> Offsite disposal estimated quantity 365 tons (SECOR, 1999) <br /> ❑ 5 Monitoring wells remaining on-site,fate, <br /> See Figure 2 for active and abandoned monitoring well locations <br /> ❑ 6 Tabulated results of all groundwater elevations and depths to water, Tables 1 and 2 <br /> ❑ 7 Tabulated results of sampling and analys s Tables 1 and 2 and Attachment A <br /> ❑ Detection limits for con it n sampling <br /> ❑ Lead analyses <br /> ❑ 8 Concentration contours of contaminants found and those remaining in soil <br /> and groundwater,and both on-site and off-site NIA why 2 <br /> ❑ Lateral and ❑ Vertical extent of soil contamination <br /> ❑ Lateral and ❑ Vertical extent of groundwater contamination <br /> ❑ 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, NIA <br /> 0 10 Reports/information ❑ Unauthorized Release Form ❑ QMRs(Dates) <br /> 4 Well and boring logs <br /> Attachment B and Table 4 ❑ PAR p FRP ❑ Other(report name) <br /> © 11 Best Available Technology(BA T)used or an explanation for not using BAT, <br /> See Letter Text <br /> © 12 Reasons why background was/is unattainable using BAT, <br /> See Letter Text <br /> ❑ 13 Mass balance calculation of substance treated versus that remaining, <br /> NIA <br /> ❑ 14 Assumptions,parameters, calculations and model used in risk <br /> assessments,and fate and transport modeling, NIA <br /> ❑ 15 Rationale why conditions remaining at site will not adversely <br /> impact water quality,health, or other beneficial uses,and See Text of Letter <br /> ❑ 16 WET or TCLP results <br /> NIA <br /> y Comments <br /> Date <br />