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APPEN X B OF THE TRI-REGIONAL RECOM IENDATIONS <br /> _-.-...CB ECKI.I.ST.-OF-REQUIRED:DATA-FOR-.CLOS.URF--OF-UNDERGROUMD-TANK-SITES <br /> CLOSURE DOCUMENT APPLICATION <br /> 1. 4 Distance to production wells for municipal, domestic, agriculture, industry and other uses within <br /> 2000 feet of the site; <br /> 2.� 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,4ubsurface utilities; <br /> 3. Figures depicting lithology (cross-section), treatment system diagrams; <br /> 4. Stockpiled soil remaining on-site or off-site disposal (quantity); <br /> 5. Monitoring wells remaining on-site, fate; -40 6e <br /> 6. Tabulated data of all ground water elevations and depths to water, <br /> 7. t V2 Tabulated results of all sampling and analyses: <br /> _Q (/—Detection limits for confirmation sampling <br /> Lead analyses -- - —-- <br /> 8. _ Concentration contours of contaminants found and those remaining in soil and ground water, both <br /> l 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. 41q- Zone of influence calculated and assumptions used for the subsurface remediation system and the <br /> zone of capture attained for the soil and ground water remediation system; <br /> - 10. 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. Best Available Technology (BAT) used or an explanation.for not using BAT; <br /> I <br /> 12. Reasons why "background" was/is unattainable using BAT; <br /> 13. Mass balance calculation of the substance treated versus.that remaining; <br /> 14. :Assumptions, parameters, calculations and model used in risk assessments, and fate and transport <br /> modeling; - --- -- <br /> 15. �` Rationale why conditions remaining at_the`site wil-not adversely'impact water quality, health, or <br /> other beneficial uses; and <br /> 16. WET.or TCLP results <br /> Comments: Gtr( /t,�-Nz �n SJ L f ffCH b <br /> I <br /> i <br />