Laserfiche WebLink
� AMBRIA <br /> 8. Concentration contours of contaminants found and those remaining in soil and <br /> groundwater, both on-and off-site, <br /> As noted above, TPHg, benzene, and/or MTBE concentrations have only been detected in soils <br /> remaining at the site in the vicinity of the former northwestern USTs, the former hoists, and the <br /> former waste oil tank areas All other soil samples collected at the site have either been non- <br /> detect or the area was over-excavated to non-detect concentrations in soil Based on this, the <br /> extent of contammants remaining in soil is defined both vertically and laterally and hrmted in <br /> area Therefore, soil iso-concentration maps are not warranted for the site and were not <br /> prepared <br /> No iso-concentration maps for groundwater were prepared because TPHg and BTEX were not <br /> detected during the most recent sampling event (third quarter 2005) and only 12 ppb of MTBE <br /> was detected in MW-1 during the most recent sampling event <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 remeduition system; r <br /> No remediation has been required at the site <br /> l0. Reportsfinformation; <br /> A table listing known reports is included in Appendix F V All available boring logs and well <br /> construction details are included in Appendix B <br /> 11. Best Available Technology(BAT)used or an explanation for not using BAT; <br /> No formal comparison of remedial technologies has been completed at the site, because no <br /> remediation was warranted for flus site <br /> 12. Reasons why "background"was/is unattainable using BAT; <br /> Background levels at the site have been attained <br /> 0323 10 <br />