Laserfiche WebLink
PUBL,C HEALTH SrIRVICES <br /> SAN JOAQUIN COUNTY r `� <br /> ENVIRONMENTAL HEALTH DIVISION 'r ` <br /> Karen Furst, M.D., M.P.H., Health Officer <br /> 304 East Weber Avenue, <br /> Third Floor • Stockton, Cj P5200 ED <br /> 209/468-3420 \��(D Lr <br /> OR 0 9 1998 <br /> CARL KNOWLES <br /> 1140 W HAMMER LN <br /> STOCKTON CA 95209 <br /> RE: 1140 W HAMMER LANE SITE CODE: 1124 <br /> STOCKTON CA <br /> San Joaquin County Public Health Services, Environmental Health Division (PHD/EHD) is the lead <br /> agency providing the oversight of the investigation and cleanup of releases from underground <br /> storage tanks (UST) within San Joaquin County. PHS/EHD has a contract with California State <br /> Water Resources Control Board to conduct an underground storage tank corrective action <br /> program. The above referenced site was placed in the PHS/EHD Local Oversight Program (LOP) <br /> in March 1987. <br /> PHS/EHD has completed review of the Fourth Quarter 1997 Report prepared by Ground Zero <br /> Analysis, Inc. Depth to groundwater and groundwater gradient is very similar to the previous <br /> three monitoring events in 1997. Gasoline contaminant concentrations continue to decline in on <br /> site monitoring wells (MWs) and the off site, down gradient MW remains below detection limits. <br /> The on site MW5 which has evidenced the highest gasoline concentrations throughout the site <br /> remediation and investigation, appears to be localized but not fully defined. Additional soil and <br /> groundwater data in the area of MW5 will be required to further delineate the lateral and vertical <br /> extent of contamination. <br /> Please submit a work plan and a permit application by May 1,1998 to further characterize this <br /> area of concern. <br /> If you have any further question regarding this matter, contact Harlin Knoll at (209) 468-3442. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> Harlin Knoll, Senior REHS j�argaret Lagorio, REHS <br /> Site Mitigation Unit Supervisor <br /> cc: RWQCB, Central Valley Region - Pat Anderson <br /> knowles <br /> A Division of San Joaquin Counry Health Care Services <br />