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PUBLIC* EALTH SEW,,CES <br />SAN JOAQUIN COUNTY <br />ENVIRONMENTAL HEALTH DIVISION <br />Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer <br />445 N. San Joaquin Street • P.O. Box 388 • Stockton CA 95201-0388 <br />(209) 468-3420 ji <br />ij <br />JOHN STROH Py <br />SAN JOAQUIN MOSQUITO ABATEMENT DISTRICT <br />7759 SOUTH AIRPORT <br />STOCKTON CA 95206-3918 <br />Re: 200 North Beckman, Lodi CA <br />7759 South Airport, Stockton CA <br />San Joaquin County Public Health Services, Environm <br />completed review of the following reports prepared by <br />mentioned sites: <br />200 Beckman: "Soil and Groundwater Investig <br />7759 Airport: "Soil and Groundwater Investigati <br />An office meeting was held on January 19, 1995 to dis <br />received in November 1994 and the status of the sites <br />by you, representing Mosquito Abatement and Mary M <br />PHSIEHD has provided for your consideration, a sump <br />well as PHSIEHD comments regarding the reports sub, <br />200 North Beckman <br />Current Tank Status <br />Tank # <br />Contents <br />Size <br />1849-1 <br />unleaded gas <br />1,000 gal <br />1849-2 <br />weed oil <br />6,500 gal <br />1849-3 <br />larvicide oil <br />7,000 gal <br />1849-4 <br />weed oil <br />6,000 gal <br />1849-5 <br />unleaded gas <br />6,000 gal <br />1849-6 <br />larvicide oil <br />7,500 gal <br />JAN 3 , 199F <br />Site Code: 1849 <br />Site Code: 1798 <br />Health Division has <br />:)n for the above <br />tion", dated August 29, 1994; <br />n" dated October 21, 1994. <br />uss ;the reports which were <br />The meeting was attended <br />ays, representing PHS/EHD. <br />ary of issues discussed as <br />Status <br />Removed 8/13/1986 <br />Removed 8/13/1986 <br />Removed 12/10/1986 <br />Installed 11/6/1986 <br />Installed 11/6/1986 <br />Installed 3/6/1987 <br />Site Status <br />On May 28, 1986, PHS/EHD received an unauthorized release/contamination site <br />report (UAR) from the Mosquito Abatement District indicating that the 6,200 gallon <br />(tank #'1849-2) weed oil tank failed precision testing oril May'21, 1986. <br />i <br />In December 1986, the area around the tanks was excavated to a total depth of 31 <br />feet; however, residual soil contamination was evidenced up to 3,800 ppm TPH, 220 <br />ppm xylene, 79 ppm toluene, and 8.7 ppm benzene. Three „monitoring wells were <br />also installed at this time to assess possible impacts toy, groundwater. <br />I� <br />PHS/EHD fled a UAR on May 4, 1988, indicating that the discharge was stopped on <br />August 13, 1986 with the removal of the tank, that site 11investigation was in progress <br />and that the three monitoring wells which were installed did not detect groundwater <br />contamination. <br />iF <br />A Mision of San Joaquin Count' Health Care.Service" <br />. �i <br />