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i <br /> PUBLIt HEALTH SERtICES <br /> SAN JOAQUIN COUNTY <br /> JOGI KHANNA M.D.,M.P.H. <br /> Health Officer <br /> P.O. Box 2009 • (1601 Fast Hazelton Avenue) •Stockton,Callfotnia 95201 <br /> (209)468-3400 <br /> RECEIVED <br /> g 1992 <br /> EAST BAY MUNICIPAL. UTILITY DISTRICT <br /> P 0 Box 24055 SOURCE CONTROL DIVISIOP, <br /> OAKLAND CA 94623 <br /> OCT U <br /> ATTN: THOMAS PAULSON, SUPERVISOR <br /> INDUSTRIAL DISCHARGER SECTION <br /> RE: EBMUD STOCKTON CENTER SITE CODE: 1169 <br /> 1804 W MAIN ST <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS <br /> EHD) has completed review of the "Second Quarter 1992 Groundwater Monitoring <br /> and Tidal Study Report" dated August 260 1992 as prepared by Weston. <br /> Weston's interpretation of the tidal study results concludes that hydraulic <br /> communication exists between the unconfined aquifer being monitored .at the <br /> site and the Stockton Deep Water Channel. The results demonstrate that the <br /> effect on groundwater elevations is minimal, does not impact the groundwater <br /> gradient direction at the site, and suggests that the tidal study has been <br /> adequately characterized. PHS-EHD agrees with Weston's conclusions, <br /> therefore, no additional tidal evaluation is necessary at this time. <br /> In a telephone communication with Mr. Robert Sengebush,. subsequent laboratory <br /> detection limits will be those specified in the "Tri Regional Board Staff <br /> Recommendations. . ." [State Water Resources Control Board Resolution 192-49] . <br /> As stated in previous correspondence, the District shall interpret the <br /> quarterly monitoring information and address the remaining soil contamination <br /> in a Final Remedial Plan to be submitted to PHS-EHD and Regional Water Quality <br /> Control Board by December 14, 1992. <br /> If you have questions, contact Diane Hinson, Supervising R.E.H.S. , at (209) <br /> 468-3452. <br /> Jogi Khanna, .D. , M.P.H <br /> Health Off' er <br /> L� auris A. Cotu1 a, RENS, Program Manager <br /> nvironmental Health Division <br /> Cc: Weston., Attn: Robert Sengebush <br /> cc: CVRWQCB, Attn: E. Thayer <br /> cc: Molly Ong, EBMUD <br /> I <br /> A Division of fan Joagwn Counn•HcWth :are SeMces �� <br />