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.r <br /> a <br /> C A M B R I A <br /> CONCLUSIONS AND RECOMMENDATIONS <br /> As discussed in our February 13, 2002 Fourth Quarter 2001 Groundwater Monitoring/Sate <br /> Investigation Report and Receptor Survey, Cambia recommends sampling all site wells <br /> quarterly and analyzing the groundwater samples for total petroleum hydrocarbons as gasoline, <br /> benzene, toluene, ethylbenzene, xylenes, methyl tertiary butyl ether, and 1,2-dichloroethane <br /> Cambria will implement these changes beginning with the second quarter 2002 sampling event, <br /> with permission from SJCPHS/EHD <br /> CLOSING <br /> If you have any questions regarding the contents of this document, please call Aubrey Cool at <br /> (707) 933-2368 <br /> Sincerely, <br /> Cambria Environmental Technology, Inc. <br /> • a Su <br /> Staff Scientist <br /> EDO GE <br /> 91-V" N p� <br /> �C9Oh�e Hc�, <br /> Joe W Neely, RG <br /> Senior Project Geologist No 6927 <br /> RG 6927 <br /> BOER <br /> Attachments <br /> Table I Groundwater Analytical Data--Oxygenates and Lead Scavengers <br /> Figure I Site Vicinity/Receptor Survey Map <br /> Figure 2 Groundwater Contour/Chemical Concentration Map <br /> Appendix A Blaine Tech Services Inc -Groundwater Monitoring Report <br /> cc Ms Karen Petryna,Equiva Services LLC <br /> . Mr Marty Hartzell, Regional Water Quality Control Board <br /> 1359 2 <br />