Laserfiche WebLink
V <br /> CAMBRIA <br /> Cambria researched historical records for this site to determine the extent of overexcavation <br /> performed during the 1985 UST removal activities The area where samples D-2 and D-3 were <br /> collected was outside of the area of the 1985 overexcavation The 1985 overexcavation limits <br /> are shown on the figure included as Appendix B The area where samples D-6 and D-7 were <br /> collected appears to be on the fringe of the area overexcavated during 1985 Depending on the <br /> accuracy of the 1985 information, samples D-6 and D-7 may have been collected from soil <br /> outside of the overexcavated area Based on this analysis, it is possible the TPHd and TPHg <br /> detections during this sampling event may not represent current site conditions, but rather <br /> historical site conditions <br /> Quarterly groundwater monitoring has been ongoing at this site since 1989 TPI-Ig has only <br /> occasionally been detected in the three monitoring wells at this site and does not appear to be a <br /> constituent of concern for this site <br /> CLOSING <br /> To further evaluate the TPHd detections from this sampling event, we will analyze groundwater <br /> samples from the site monitoring wells for TPHd dunng future quarterly groundwater monitoring <br /> . events <br /> If you have any questions regarding the contents of this report, please call Joe Neely at <br /> (707) 933-2361 <br /> Sincerely, <br /> Cambria Environmental Technology, Inc. <br /> D GFQ� <br /> H <br /> Joe W Neely, R G �'�p`'�e W SFR Cha <br /> Senior Project Geologist <br /> RG 6927 C No 6977 0 <br /> 0813 <br /> 3 <br />