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i <br /> APPENDIX B OF THE TRI-REGIONAL RECOMMENDATIONS <br /> { <br /> CHECKLIST OF REQUIRED DATA FOR CLOSURE OF UNDERGROUNDTANK SITES <br /> i <br /> CLOSURE DOCUMENT APPLICATION I <br /> 1 a Distance to production wells for municipal, domestic, agriculture, industry and other uses l <br /> within 2000 feet of the site; <br /> I <br /> 29� Site maps to scale of area impacted showing locations of former and existing tank systems, <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; <br /> 4.N A Stockpiled soil remaining on-site or off-site disposal(quantity); <br /> 5"- Monitoring wells remaining on-site, fate; <br /> 6. Tabulated data of all ground water elevations and depths to water; <br /> 7.—` Tabulated results of all sampling and analyses: <br /> Detection limits for confirmation sampling <br /> Lead analyses <br /> 8.--- Concentration contours of contaminants found and those remaining in soil and groundwater, <br /> both on- and off-site: <br /> Lateral extent of soil contamination <br /> Vertical extent of soil contamination <br /> Lateral extent of ground water contamination <br /> Vertical extent of ground water contamination <br /> 9._� Zone of influence calculated and assumptions used for the subsurface remediation system <br /> and the zone of capture attained for the soil and groundwater remediation system; <br /> lot!n Reportslinformation missing from file <br /> Unauthorized Release Form (URF) <br /> (WRs (Dates) <br /> PAR <br /> FRP <br /> Other(report name) <br /> Well and boring logs <br /> 11�::: Best Available Technology (BAT) used or-an explanation for not using BAT; <br /> 12'- Reasons why"background"waslis.unattainable using BAT; <br /> 13. Mass balance calculation of the substance treated versus that remaining; <br /> 14t Assumptions, parameters, calculations and model used in risk assessments, and fate and <br /> transport modeling; <br /> 15� Rationale why conditions remaining at the site will not adversely impact water quality, <br /> health, or other beneficial uses; and <br /> 16.►ft WET or TCLP results <br /> Comments: <br />