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PUBtIC HEALTHSE ICES .. <br /> SAN JOAQUIN COUNTY <br /> JOGI KHANNA M.D.,M.P.H. <br /> Health Officer <br /> P.O. Boz 2009 a(1601 East I Hawn Avetwe)•SwdaM CaWo rt da 95201 <br /> (209)468.3400 <br /> BRUCE WOOLSEY <br /> WOOLSEY OIL <br /> 166 FRANK WEST CIRCLE DEC 171993 <br /> STOCKTON CA 95213 <br /> RE: 166 Frank West Circle SITE CODE: 1103 <br /> Stockton <br /> This letter is being sent to summarize a meeting between your attorney,Patrick Riddle, and San Joaquin <br /> County Public Health Services,Environmental Health Division (PHS/EHD) staff, held at the office of <br /> PHS/EHD on December 14, 1993. <br /> The issue of discussion at the meeting was the requirement to verify the quality of the groundwater in the <br /> area of the former underground storage tanks at this site. <br /> The three existing monitoring wells located at 188 Frank West Circle,if still usable, may be monitored for <br /> groundwater flow patterns and gradient information. If the data collected from these off-site wells indicate <br /> a consistent groundwater flow pattern for the area,one well may be installed at your site within 10 feet of <br /> -the suspected source area in the verified downgmdient direction to verify the quality of the groundwater. <br /> If the existing wells located at 188 Frank West Circle are dry or unusable,a minimum of three monitoring <br /> wells will need to be installed to verify groundwater flow patterns and gradient direction at this site. <br /> Hydropunch technology as an alternative to conventional monitoring wells to gather groundwater data was <br /> discussed at the meeting. PHS/EHD recommends the use of a monitoring well to gather groundwater <br /> quality data, however, the hydropunch technology is another option available. Please be advised, however, <br /> that the data gathered from a hydropunch may not be sufficient for concurrence for closure from the <br /> Central Valley Regional Water Quality Control Board <br /> If you have any questions or comments regarding this letter,please contact Linda Turkatte, Senior RENS, <br /> of my staff at (209) 468-3441. <br /> Jogi Khanna, M.D., M.P.H- <br /> Fnna <br /> Officer <br /> Heran, RENS, Program Manager <br /> Environmental Health Division <br /> DH/It <br /> C Beth Thayer-CVRWQCB <br /> C. Patrick Riddle <br /> A DIViS n of Sfn)M*M CoMy Heahh Care Seevlces <br />