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ICanteen Facility September 28,2001 <br /> Quarterlyr undwa nitorin Report Page 5 <br /> RECOMMENDATIONS <br /> AES recommends the following for the Canteen Facility <br /> Continue quarterly groundwater monitoring and reporting, including measurement of <br /> • q Y <br /> depth to groundwater in each well, evaluating monitor well status, preparation of a <br /> potentiometric surface contour map containing the calculated gradient and <br /> approximate rate of groundwater movement, and preparation of isoconcentration <br /> contour maps for benzene and TPH(g) at the two different screened aquifer depths <br />' Groundwater samples will be analyzed for BTEX by EPA method 8020, TPH(g) by <br /> EPA method 8015 modified, and TBA, MTBE, DIPE, ETRE, TAME, 1,2-DCA, and <br /> EDB by EPA method 8260B Groundwater monitoring will be performed in the <br />' second month of each quarter and quarterly monitoring reports will be submitted to <br /> the appropriate state agencies by the 15"' of the first month following the end of each <br />' quarter <br /> If you have any questions or comments, or need additional information, please contact me at <br /> (512) 990-7467, extension 212 <br /> Sincerely, <br /> APPLIED EARTH SCIENCES, INC. <br /> 1 <br /> ERIC U3 <br /> MUEHLBERGER "4 <br /> Eric W Muehlberger, RG (CA#5255) N9 No 5255 <br /> Senior Hydrogeologist 11 Te <br /> OF <br /> Enclosures Tables <br />' Figures <br /> Appendix A <br />' cc Mr Richard Belthoff Mr Marty Hartzell <br /> Director of Real Estate Central Valley RWQCB <br /> Compass Group USA, Inc 3251 S Street <br />' 2400 Yorkmont Rd Sacramento, CA 95816 <br /> Charlotte, NC 28217 <br />