SITE INFORMATION AND CORRESPONDENCE

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PUBLIC rEALTH SERV4 CES � SAN JOAQUIN COUNTY ENVIRONMENTAL HEALTH DIVISION r. Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer N' X 304 E. Weber Ave., Third Floor • P. O. Box 388 • Stockton, CA 952 - P 209/468-3420 To: Responsible Parties MAILED NOV 141995 (see attached list) Re: Lincoln/Charter Way Groundwater Contaminant Plume This letter is being sent to summarize the October 30, 1995 meeting held at the office of San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD). The purpose of the meeting was to discuss and address the nature and extent of the above noted groundwater plume and to collaborate a strategy to abate the problem. Items Of Discussion ` THE IDENTIFICATION OF ADDITIONAL POTENTIAL SOURCE AREAS. Several location maps showing groundwater concentrations were presented for discussion; from this generalized data, several separate but commingling groundwater plumes were apparent. These potential source areas need further investigation for history of site usage. THE SUBMITTAL OF CLEANUP FUND APPLICATIONS FOR ELIGIBLE TANK OWNERS. PHS/EHD, in a recent telephone conversation with the State Water Resources Control Board (SWRCB) Cleanup Fund staff, has learned that there are currently several legislative bills regarding the cleanup fund and commingling plumes. Should any of these bills pass, there may be, in the near future, reimbursement relief for responsible parties cooperatively involved in commingled plumes. There will most likely be serious legal conditions that must be satisfied to be eligible. PHS/EHD will continue dialogue with the SWRCB fund staff as this situation progresses. THE INITIATION OF WORK AT THE 515 W. CHARTER WAY AND THE 1444 S. LINCOLN STREET PROPERTIES The work required at these sites is to identify the nature and distribution of hydrocarbons on each respective site and, as feasibility studies have already been completed at several nearby sites, to install vapor extraction/air sparge wells. This should be done in one mobilization attempt, if possible, and by a contractor with sufficient successful experience in this type of work. THE POSSIBILITY OF SHARING REMEDIATION EQUIPMENT TO REDUCE OVERALL LENGTH OF REMEDIATION TIME AND COSTS. The ultimate feasibility of this concept depends on several factors and can be discussed in greater detail at the next scheduled meeting. Anticipated Progress Before Next Scheduled Meeting To obtain further information on the history and use of other nearby properties considered to be additional possible sources to the commingled plume. A Division of San Joaquin County Health Care Services