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C A M B R I A Ron Rowe <br /> March 17, 2000 <br />. Recommendation: It appears that the VOCs, HVOCs, and industrial solvents analyses have not <br /> detected significant concentrations other than MTBE Therefore, Cambria recommends quarterly <br /> analyses of groundwater for TPHg using EPA Method 8015 modified and for BTEX and MTBE <br /> using EPA Method 8020 The highest MTBE concentration will be confirmed using EPA <br /> Method 8260 Cambria proposes annual analysis of all other constituents <br /> CLOSING <br /> We appreciate the opportunity to work with you on this project Please call Ailsa Le May at <br /> (510)420-3344 if you have any questions or comments <br /> Sincerely, <br /> Cambria Environmental Technology, Inc <br /> Ann i Kreml p E D G ESC <br /> Senior Staff Scientist s,`` `�,5N S LFA 0 <br /> NO 6717 >'r <br /> Ailsa S Le May, R G �9TF°F c A0 <br /> Senior Geologist <br /> Figure I -Groundwater Elevation Contour Map <br /> Table 1 -Groundwater Analytical Data-Additional Constituents <br /> Attachment A -Blaine Groundwater Monitoring Report and Field Notes <br /> cc Karen Petryna, Equiva Services LLC, P O Box 7869, Burbank, California 91501.7869 <br /> g lmant 10711gm11 g00gm doc <br />• <br /> 2 <br />