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PUBLIC "fl'EALTH SERVi-CES ��► �A <br /> SAIN JOAQUIN COUNTY ' , <br /> ENVIRONMENTAL HEALTH DIVISION a' s <br /> Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer <br /> �fFOR <br /> 445 N. San Joaquin Street @ P.O. Box 388 • Stockton, CA 95201-0388 <br /> (209) 468-3420 n <br /> MARGARET EKHOLM <br /> P 0 BOX 247 <br /> ESCALON CA 95320 SEP 2 <br /> 1994 <br /> RE: Ekholm Property SITE CODE: 1955 <br /> 1702 Jackson Street <br /> Escalon, Ca <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) has completed <br /> the review of the "Additional Vapor Well Installation" letter workplan dated September 20, 1994, <br /> submitted by Clearwater Group, and has the following comments for your consideration. <br /> The request in the workplan for the sampling of groundwater from monitoring well MW#1 only cannot <br /> be granted at this time. Consistent groundwater data over time is essential for confirming no adverse <br /> impact to groundwater, a requirement for closure. As the expected duration of the soil remediation at <br /> the site is brief, the additional data generated from the site wells over this time period is essential to <br /> ultimately substantiate a site closure. <br /> PHSIEHD has issued permit #4259 for the installation of the two additional vapor extraction wells. The <br /> installation of these wells specifically to remediate target areas appears to be warranted. <br /> Although the soil samples from the installation of the vapor wells show nondetect results, the data <br /> gathered at the time of the tank removals and from the initial vapor extraction testing indicate some <br /> contamination in the area of the farmer tank pit as well. These wells should also be utilized in the <br /> remediation efforts until such a time the data indicates otherwise. <br /> If you have any questions or would like to discuss this letter in more detail, please contact Linda <br /> Turkatte, Senior REHS at (209) 468-3441. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> 1 <br /> yf <br /> Linda Turkatte, Senior REHS Diane M. Hinson, REHS <br /> Site Mitigation Unit Supervisor <br /> LT <br /> c: CVRWQCB, Beth Thayer <br /> c: SWRCB Cleanup Fund, Lydia Bracco <br /> c: David Wood <br /> c: Neumiller and Beardslee, Brooke Birke <br /> c: Clearwater Group, Juniper Neill <br /> A DMion of San Joaquin County Health Care Services <br />