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PUBLInEALTH SERVICES <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION : y� <br /> Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer <br /> 445 N. San Joaquin Street • P.O. Box 388 • Stockton, CA 95201-0388 iFi6 <br /> (209) 468-3420 <br /> TREVOR SANTOCHI <br /> RC ENVIRONMENTAL FEB 18 199 <br /> RV 11W6-C-X-42444— <br /> RE: 1235 EAST ALPINE SITE CODE: 1512 <br /> STOCKTON CA <br /> This letter is being sent to summarize a meeting held at the <br /> office of San Joaquin County Public Health Services, <br /> Environmental Health Division (PHS/EHD) on February 9, 1994 . In <br /> attendance were representatives of CRC Environmental, Trevor <br /> Santochi and Ronald Allums, and a representative of PHS/EHD, <br /> Linda Turkatte. Several issues regarding the status of the above <br /> noted site were discussed and are summarized below. <br /> The closure of the site was discussed. CRC Environmental had <br /> understood from the consulting firm, Weston, that only two <br /> additional groundwater sampling events would be required to <br /> effect a regulatory closure for the site. PHS/EHD disagreed and <br /> explained several areas still of a concern at the site. The <br /> areas still requiring investigation are as follows: <br /> * The extent and type of contamination noted in the <br /> septic pit at the time of the installation of <br /> monitoring well MW#4. The entire septic system will <br /> need to be investigated for contamination that may pose <br /> a threat to public health and/or the environment. <br /> * The unsaturated zone extending from the depth of the <br /> seasonal high groundwater (approximately 35 to 40 feet <br /> below ground surface) to the depth of the measured low <br /> groundwater. This "smear zone" may have been impacted <br /> from hydrocarbons that were in the groundwater and left <br /> behind as the water table dropped. <br /> * The full lateral and vertical extent of the <br /> contamination remaining in the former tank pit area <br /> after the over-excavation. <br /> * The full volume of groundwater impacted at the site. <br /> Physical data from the areas of concern, noted above, should be <br /> A Division(if San Joaquin County health Care Services <br />