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0 0 <br /> (99) Chow Engineering, Inc. 7770 Pardee Lane,Suite 100,Oakland,CA 94621 <br /> Tel(510) 636 8500;FAX(510)63 6 8544 <br /> MEMO <br /> DATE: October 12, 2004 <br /> TO: Ms Margaret Lagorio <br /> San Joaquin Co I <br /> y, De artment of Environmental Health, Stockton, California <br /> FROM: Lisa Kimura - li t tid�i <br /> REF: Summary of ew coo�pee o'f'Work for the site at: <br /> General Dynamics (formerly Primex Technologies) <br /> 32727 Corral Hollow Road, Tracy California <br /> Ms Lagorio: <br /> Chow Engineering, Inc (CE)proposes to install one (1) new groundwater monitoring ell at the above- <br /> described site in'Tracy, California. Please see the attached"Figure 3" for the SMU #21 facility showing the <br /> Proposed New Well directly east of the tank and at the southern boundary of the SMU#21 area of concern. <br /> As you are aware, seven(7) monitoring wells have been installed at the site and these are currently under a <br /> quarterly monitoring plan. The most recent sampling and analysis round occurred in September 2004. The <br /> three (3)previous sampling and analysis rounds occurred in June, 2004, March 2004 d in January 2004. <br /> The DTSC has requested additional information on this site and the Proposed New Well is expected to <br /> yield this data for better definition of the subsurface conditions and to observe any trends of attenuation of <br /> the petroleum-type materials known to have a presence in the vicinity of SMU 421. <br /> The work is proposed to start on October 26,2004. Please call me with any questions on this next phase of <br /> work. Thank you. <br /> Kind regards. <br /> Attachments: <br /> 1. Well/Pump Permit and Contractor Declaration <br /> 2, Figure 3, SMU#21 Monitoring well Locations <br /> 3, Figure 1, Location Map <br />