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Mr Kyle Christie Project 0805-140 01 <br /> February 13, 1995 <br /> Page 3 <br /> • <br /> ACTIVITIES PERFORMED DURING THE FOURTH QUARTER <br /> • On October 31, 1994, a technician from EMCON was on site to evaluate the condition of <br /> Christy boxes, locking caps, locks Christy boxes from monitoring wells MW-1 through <br /> MW4 were replaced and surface seals, were brought up inside the skirt of the box Locking <br /> caps and locks were in good condition Surface seals in the other wells were fine <br /> • Performed quarterly groundwater sampling <br /> ANTICIPATED WORK <br /> • ARCO will continue quarterly groundwater sampling monitoring The next sampling event is <br /> tentatively scheduled for March 1994 <br /> CONCLUSIONS <br /> The groundwater flow direction has been consistently toward the east to southeast Dissolved <br /> gasoline hydrocarbons were detected in groundwater samples collected from monitoring wells <br /> MW-1, and MW-5 but were not detected in wells MW-2, MW-3, MW4 and MW-6 Dissolved <br />. hydrocarbon concentrations generally decreased from the previous sampling event perfomied in <br /> September 1994 <br /> DOCUMENT DISTRIBUTION <br /> Ms Mary Meays <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P O Box 2009 <br /> Stockton, California 95201 <br /> Ms Elizabeth Thayer <br /> California Regional Water Quality Control Board <br /> Central Valley Region <br /> 3443 Routier Road, Suite A <br /> Sacramento, California 95827-3098 <br /> SAC 1N 1pj010805108051400 ibm-Mnam 4 <br />