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h t <br /> 1 <br /> PUBLIC l= <br /> JEALTH SEXC ES <br /> SAN JOAQUIN COUNTY Q .a <br /> ENVIRONMENTAL HEALTH DIVISION ` <br /> Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer . P <br /> t 445 N. San Joaquin Street • P.O. Box 388 • Stockton, CA 95201-0388 <br /> (209) 468-3420 ;p <br /> C CO) <br /> P <br /> BRUCE MC CANDLESS <br /> RIPON FARM SERVICE <br /> PO BOX 806 <br /> RIPON CA 95366 1 <br /> RE: Ripon Fane Service SITE CODE: 1605 <br /> 22871 South Highway 99 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) has completed review of <br /> E the "Quarterly Report" dated September 22, 1994 and prepared by Geological Audit Services. PHS/EHD has the <br /> following comments for your consideration. p <br /> The report included the results of groundwater samples collected during the August 5, 1994 sampling event. <br /> Groundwater contamination continued to be evidenced; however, a gradient change was observed. During the <br /> May sampling event the gradient direction was observed to the southwest and during the August sampling event <br /> the gradient direction was observed to have changed to the northwest. The rep rt suggested that groundwater <br /> elevation measurements be collected monthly during the third quarter, September - November 1994 to determine <br /> if there is a consistent gradient direction prior to the installation of additional monitoring wells. PHS/EHD <br /> concurs with this suggestion and furthermore, requests that a well survey#be conducted and results included in F <br /> the next quarterly report along with a work plan to install additional moriitoringi wells and soil borings to <br /> determine the extent of the soil and groundwater contamination plumes. <br /> If you have any questions, please contact Mary Meays at (209) 468-0337. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division ' <br /> . b <br /> Mary Meays, Senior REHS Diane M. Hinson, REHS I <br /> Site Mitigation Unit Supervisor <br /> l� s <br /> MM/22871 HWY <br /> I � <br /> c: Elizabeth Thayer, CVRWQCB j <br />` c: Bob Marty, Geological Audit <br /> i#E <br /> !� F <br /> I� <br /> �Iyy <br />' !I <br /> �II <br /> A Dig isiun or San Joaquin County Health Care Services <br />