Laserfiche WebLink
�1 E <br /> ERI <br /> • ENVIRONMENTAL RESOLUTIONS, INC. <br /> FE-2 <br /> January 30,2003 <br /> ,JAN 3 1 2003 ERI 205513 QSR23 <br /> Mr Edward C Ralston ENVJ ONMENT HEALTH <br /> ConocoPhillips Company PERMT/SERVICES <br /> 76 Broadway <br /> Sacramento, California 95818 <br /> Subject Quarterly Summary Report for Environmental Investigation,Fourth Quarter 2002, <br /> 76 Facility 5886, 2701 West March Lane, Stockton,California <br /> Mr Ralston <br /> At the request of ConocoPhillips Company(formerly Tosco Corporation), and pursuant to correspondence <br /> from San Joaquin County Public Health Services,Environmental Health Division(the County) dated <br /> July 24, 1997, Environmental Resolutions,Inc (ERT)is submitting this quarterly summary report for the <br /> subject site This quarterly report discusses work completed dunng fourth quarter 2002 <br /> BACKGROUND <br /> It is ERI's understanding that Union Oil Company of California(Unocal)purchased the land in 1967,at <br /> which time the property was vacant The location of the site is shown on the Site Vicinity Map (Plate 1) <br /> In 1982,Unocal constructed a service station at the site and installed three 12,000-gallon underground <br /> storage tanks (USTs)to store gasoline and diesel fuels(Delta Environmental Consultants,Inc [Delta], <br /> February 6, 1996) The present site configuration is shown on the Generalized Site Plan(Plate 2) <br /> As presented in previous reports, a summary of site activities including remedial efforts at the site is as <br /> follows <br /> • 1995 —Unocal removed three 12,000-gallon fuel USTs, product piping, and dispensers Unocal <br /> replaced the fuel USTs with two 15,000-gallon and one I2,000-gallon UST The UST <br /> replacement activities included disposal of approximately 1,200 cubic yards of soil at Forward <br /> Landfill in Manteca, California and disposal of approximately 15,000 gallons of groundwater at <br /> Unocal's Rodeo, California facility(Delta, February 6, 1996) <br /> • September 1995 -Unocal advanced 21 soil borings and collected soil and groundwater samples <br /> from the borings utilizing a Geoprobe®sampling system(Delta,February 6, 1996) <br /> • June 1996 -Pacific Environmental Group, Inc (PEG)performed a water-supply well survey <br /> within a one-quarter-mile radius of the site The survey identified 10 wells located within the <br /> survey area These wells are located northeast to southeast of the site and are apparently utilized <br /> as cathodic protection or irrigation wells(PEG, June 24, 1996) <br /> C� <br /> 73 Digital Drive, Suite 100, Novato,California 94949-5791 415-382-9105 (FAX 415-382-1856) <br /> Lake Forest - Novato 9 Seattle <br />