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IT Corporation <br /> 1326 North illarket Boulevard <br /> Sacramento, CA 95834 1912 <br /> 1 cl 916 928 3,300 <br /> *he( A Far 916928 3341 <br /> 41�wnoup 1,11ember of The IT Croup <br /> January 17,2002 <br /> Project 822121 <br /> Mr Michaellnfurna U L�[E C� ��D <br /> San Joaquin County U 1� <br /> Public Health Services JAN 2 2 ZOOZ <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 ENViRQI�MENT HEALTH <br /> PERMIT/SERVICES <br /> Re Tosco(Former Unocal) Service Station#4409 <br /> Quarterly Summary Report <br /> Fourth Quarter 2001 <br /> Dear Mr lnfurna <br /> As directed by Tosco Corporation, a Subsidiary of Phillips Petroleum Company, IT Corporation is <br /> forwarding this Quarterly Summary Report for the following location <br /> Store Location <br /> • 4409 1502 North El Dorado, Stockton, California <br /> This report documents recent site activities and quarterly monitoring and presents conclusions and <br /> recommendations as requested by the San Joaquin County PHS-EHD(SJCPHS-EHD) <br /> Should you have questions or comments,please call(916)565-4184 <br /> Sincerely, <br /> I`T Corpoa y <br /> \Steve LLoofho , G 4793 <br /> Project Geologist <br /> Attachments Figure 1 Groundwater Analytical Results(Fourth Quarter 200 1) <br /> Figure 2 Shallow Zone Potentiometric Surface Map(Fourth Quarter 200 1) <br /> Figure 3 Deep Zone Potentiometric Surface Map(Fourth Quarter 2001) <br /> Attachment A Gettler-Ryan October 10, 2001 Monitoring Results <br /> cc Mr Ed Ralston,Phillips 66 Company <br /> Mr Mary Hartzell, RWQCB,Central Valley Region <br /> SAC IN IsacDP120021PRJ1PJ81821822121 2aa doe-021rt 1 1T CORPORATION <br />