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^J` I <br /> PUBLIC H ALTH SERVIdS <br /> aQ��N <br /> SAN JOAQUIN COUNTY a z <br /> ENVIRONMENTAL HEALTH DIVISION =4 r <br /> Karen Furst, M.D., M.P.H., Health Officer <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 <br /> 209/468-3420 <br /> DARLENE M MANSFIELD <br /> 13380 W GRANTLINE RD <br /> TRACY CA 95376 JUL 01 1999 <br /> RE: Mansfield Property Site Code:PR508216 J <br /> 13880 W. Grantline Rd. <br /> Tracy,CA.,95376 <br /> I <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS-EHD)has reviewed j <br /> the June 17, 1999 "Soil and Groundwater Investigation and Site Status Report" received June 18, 1999 <br /> from Chevron Environmental Management Company and has the following comments. <br /> I <br /> PHS-EHD has assisted GeoMatrix Consulting and Chevron during this subsurface investigation with <br />{ verbal agreement from the Central Valley Regional Water Quality Control Board(CVRWQCB). PHS- <br /> EHD assists in the oversight of environmental assessments in order to ascertain if the groundwater has j <br /> been impacted by the pipeline previously located near the above referenced site. <br /> i <br /> j <br /> Laboratory data contained within the report indicate that petroleum hydrocarbons in elevated <br /> concentrations are present in the soil. Additionally,petroleum hydrocarbons have been detected in the <br /> groundwater samples collected. The concentrations of the groundwater,petroleum levels have exceeded <br /> levels that the CVRWQCB has previously allowed to remain in place. <br /> PHS-EHD refers sites with groundwater contamination to the CVRWQCB for their evaluation. Please <br /> ensure that a complete copy of the site's investigation and all reports are forwarded to the CVRWQCB. <br /> Thank you for your cooperation during this site investigation. You may call Michael Infurna at (209) <br /> 468-3454 if you have any questions. <br /> i <br /> Donna Heran,REHS,Director <br /> 1. '. Environmental Health Division <br /> a <br /> Michael J. Infurna Jr., Senior REHS ° Margaret Lagorio,RENS <br /> LOP /Site Mitigation Unit IV Supervisor <br /> MI/ <br /> c: CVRWQCB-Wendy Cohen, Sacramento. <br /> c: GeoMatrix- Elizabeth Lu,PO Box 6012,San Ramon, 94583-0712. <br /> c: Chevron Envir Mgmt Co. -Katie Hower,6001 Bollinger Canyon Rd, San Ramon,94583. <br /> c: Attorney-P.Riddle,7574 Shoreline Dr.,.Stockton,95219. <br /> A Division of San Joaquin County Health Care Services <br />