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Vicki McCartney [EH] <br /> From: Vicki McCartney[EH] <br /> Sent: Monday,August 14, 2006 4:04 PM <br /> To: wlittle@advgeoenv.com, <br /> Subject: Work plan submitted for Lopez Property <br /> Bill, <br /> I received Additional Site Assessment Work Plan Addendum for Lopez Property dated July 21, 2006. This work plan was <br /> not signed by a professional geologist. Will you please resubmit this work plan after it has been reviewed and signed by <br /> you or another professional geologist at AGE? Also, the last paragraph on the second page of this work plan addendum <br /> states that"the top of each existing and newly installed well casing (well head), and one existing well head at the <br /> adjacent 1607 Turnpike Road site, will be surveyed to determine its elevation relative to mean sea level. The survey of <br /> one well at the adjacent property will be utilized to correct for any discrepancies in relative casing elevations, and will <br /> ensure consistent groundwater flow modeling." I checked and Morrow Sur Pving surveyed the wells at both the Lopez <br /> Property and the Comfort Air sites within three months of each other. Is it necessary to resurvey the top of existing well <br /> heads at the Lopez Property site and one existing well head at the Comfort Air site to ensure consistent groundwater flow <br /> modeling? <br /> Thanks, Bill. <br /> Vicki McCartney,Senior REHS <br /> San Joaquin County <br /> Environmental Health Department <br /> 304 E.Weber Avenue <br /> Stockton,CA 95202-2708 <br /> Phone: (209)468-3456 <br /> Fax: (209)468-3433 <br /> E-mail: vmccartney@sjcehd.com <br /> 1 <br />