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TABL - CHECKLIST OF REQUIRED DA�f to FOR NO FURTHER ACTION REQUESTS AT UNDERGROUND TANK SITES S:;� Name and Location: Site B Gasoline Release, Spreckels Sugar, Tracy CA Distance to production wells for municipal, domestic, agriculture, industry and other uses within 2000 feet of the site; Figure 1, Schmidt & Associates, 11/25/98 2. d°' Site maps, to scale, of area impacted showing locations of former and existing tank systems, excavation contours and sample locations, boring and monitoring well elevation contours, gradients, and nearby surface waters, buildings, streets, and subsurface utilities; Factory Drawing 3. _ Figures depicting lithology (cross section), treatmen syste di rams- Cross Section AW, B-�', Schmidt & Assoc., 11/25/98 4. Stockpiled soil remaining on-site or off-site disposal (quantity); 5. Monitoring wells remaining on-site, fate; To be destroyed upon approval of closure 5. Tabulated results of all groundwater elevations and depths to water, From Spreckels File 7. Tabulated results of all sampling and analyses: From Spreckels File i Detection limits for confirmation sampling Lead analyses I 5. Concentration contours of contaminants found and those remaining in soil and groundwater, both on- site and off-site: To be included in closure report Lateral extent of soil contamination Vertical exient of soil contamination Lateral extent of groundwater contamination Vertical extent of groundwater contamination 9. Ve_ Gone of influence calculated and assumptions used =or subsurface remediation system and the zone of capture attained for the soil and groundwater remediation system; To be included in final report 1 D. _40" Reports 1 information — Unauthorized Release Form (URF) From County Files QMRs (Dates) From Spreckels Files PAR Harding Lawson 11/20/94 FRP To be included in closure report Other (report name) None Well and boring logs From Spreckels Files 11. Best Availabie Technology (BAT) used or an explanation for not using BA i; Passive Bioremediation i 12. Reasons why "background"wasfiis unattainable using BAT: Background will be achieved over time .3. Mass balance calculation of substance treated versus that re aining' `�o be included in final closure report 14. Assumptions, parameters, calculations and model used in risk assessments, and fate and transport modeling; ASTM Risk Based Corrective Action s -Rationale why conditions remaining at site will not adversely►impact water quality, health, or other beneficial uses: and Lack of migration coupled with distance to receptors 10. 11 WET or TCLP results and passive bioremediation F Comments: No migration occurring. Constituents will naturally biograde before reaching receptors Impacted soil and groundwater sits under the factory. ay: