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PUBLIC -AEALTH SEI ES <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION y <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer <br /> 304 E. Weber Ave., Third Floor • P. O. Box 388 • Stockton, CA 95201-0388 �qG%FpR�`P <br /> 209/468-3420 <br /> MAILED FEB 2 9199E <br /> BRUCE MC CANDLESS <br /> RIPON FARM SERVICE <br /> PO BOX 806 <br /> RIPON CA 95366 <br /> RE: Ripon Farm Service SITE CODE: 1605 <br /> 22871 South Highway 99 <br /> Ripon CA <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) has <br /> completed review of the "Quarterly Report - August 1995" dated September 25, 1995 and <br /> the "Quarterly Report - October 1995" dated January 8, 1996 both prepared by Advanced <br /> GeoEnvironmental. PHS/EHD has the following comments for your consideration. <br /> The report included the results of groundwater samples collected from monitoring wells <br /> MW 1 - MW3 on May 24, 1995, from MW1 - MW5 on October 9, 1995 and the soil and <br /> groundwater samples collected during the August 14, 1995 investigation. <br /> Groundwater contamination continued to be evidenced with gradient direction changes <br /> observed. Please include in future tables summarizing analytical results: the observed <br /> depth to water, groundwater elevation and calculated gradient direction. <br /> Table 2 which was included in the August 1995 quarterly report contained numerous <br /> errors. A revised table with the corrections and the sample date should be included in <br /> future reports to summarize soil and groundwater data. The following corrections should <br /> be made: <br /> Sample ID Benzene Toluene Ethvlbenzene Xylene <br /> AS89/15 <.005 <.005 <.005 <.01 <br /> ASS 12/15 .050 <br /> ASB13/15 b19 <br /> PHS/EHD requested in correspondence dated October 19, 1994 that a well survey be <br /> conducted. .The results of the survey should be submitted within the next quarterly report <br /> and included on subsequent location maps. <br /> A Division of San Joaquin County Health Care Services . <br />