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ACTON <br /> MICKELSON <br /> ENVIRONMENTAL, INC. <br /> Consulting Scientists, Engineers, and Geologists <br /> January 31, 2005 <br /> Ms. Devra Lewis �O <br /> Private Sites Cleanup Unit Q� <br /> California Regional Water Quality Control Board ��((''�� <br /> Central Valley Region aq 1 05. <br /> t11020 Sun Center Drive#200 <br /> Rancho Cordova, California 95670 �' �,��C�`o 16014.02/7 <br /> Subject: 2004 Annual Report <br /> Former Georgia-Pacific Corporation Chemical Packaag Facility <br /> 75 West Valpico Road, Tracy, California <br /> Dear Ms. Lewis: <br /> Enclosed is the 2004 Annual Report, summarizing site activities for 2004 and presenting the results <br /> of the monitoring event conducted September 28-29, 2004, at the former Georgia-Pacific <br /> Corporation Chemical Packaging Facility, 75 West Valpico Road,in Tracy, California(site). <br /> The inferred flow direction and hydraulic gradient for the second half 2004 are consistent with those <br /> in previous monitoring events. The chloroform concentrations reported in samples collected from <br /> site monitoring wells ranged from less than the laboratory reporting limit of 0.5 micrograms per liter <br /> (µg/L) to 35 µg/L. The analytical results for the second half 2004 are generally consistent with <br /> historic trends. The next monitoring event at the site is scheduled for March 2005. <br /> Please call Bill Pratt at (916) 939-7563 or myself at (916) 939-7550 should you have any questions <br /> regarding the material presented. <br /> Very truly yours, <br /> ACTON•MICKELSON•ENVIRONMENTAL,INC. a <br /> 4Bbara J.Mi lson P.E. Bill R. Pratt <br /> California Registered Professional Project Engineer <br /> Engineer#43417 <br /> BJM/BRP:kb <br /> cc: Ms. Julie Raining, Georgia-Pacific Corporation <br /> Mr. Michael Infurna, San Joaquin County,w/o appendices <br /> Mr. Steve Bayley,City of Tracy Public Works Department,w/o appendices <br /> Mr.Nick Pinhey, City of Tracy Public Works Department,w/o appendices <br /> Mr. Les Potter,McCabe,Lynn, and Potter <br /> DA2004 Letters&Repods\2004 Letters\04-237AM <br /> 5175 Hillsdale Circle,Suite 100 (916)939-7550 <br /> Fax(916)939-7570 <br /> El Dorado Hills,California 95762 <br />