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APPEI X B OF THE TRI-REGIONAL RECOMLm06ATIONS <br /> CHECKLIST OF REQUIRED DATA FOR CLOSURE OF UNDERGROUNDTANK SITES <br /> CLOSURE DOCUMENT APPLICATION <br /> 1. Y Distance to production wells for municipal, domestic, agriculture, industry and other uses <br /> within 2000 feet of the site; <br /> 2. Y 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. Y Figures depicting lithology (cross section), treatment system diagrams; <br /> 4. N Stockpiled soil remaining on-site or off-site disposal (quantity), <br /> 5. N Monitoring wells remaining on-site, fate; <br /> 6.Y Tabulated data of all ground water elevations and depths to water; <br /> 7.Y Tabulated results of all sampling and analyses: <br /> Y Detection limits for confirmation sampling <br /> Y Lead analyses <br /> 8.Y Concentration contours of contaminants found and those remaining in soil and ground water, <br /> both on- and off-site: <br /> N Lateral extent of soil contamination <br /> Y_ Vertical extent of soil contamination <br /> NIA Lateral extent of ground water contamination <br /> NIA Vertical extent of ground water contamination <br /> 9. NIA Zone of influence calculated and assumptions used for the subsurface remediation system and <br /> the zone of capture attained for the soil and groundwater remediation system; <br /> 10.N Reports/information missing from file <br /> Unauthorized Release Form (URF) <br /> QMRs (Dates) <br /> PAR <br /> FRP <br /> Other(report name) <br /> Well and boring logs <br /> 11.Y Best Available Technology (BAT)used or an explanation for not using BAT; <br /> 12. Y Reasons why"background"was/is unattainable using BAT; <br /> 13. NIA Mass balance calculation of the substance treated versus that remaining; <br /> 14_Y Assumptions,parameters, calculations and model used in risk assessments, and fate and <br /> transport modeling; <br /> 15.Y Rationale why conditions remaining at the site will not adversely impact water quality, <br /> health, or other beneficial uses;and <br /> 16. N WET or TCLP results <br /> Comments: SOIL ONLY_- CLOSURE BASED ON RESULTS OF CONFIRMATION OF TANK <br /> REMOVAL DATA BY A PRELIMINARY INVESTIGATION <br />