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California Regional Water Quality Control Board r <br /> Central Valley Region <br /> Steven T.Butler,Chair Gray Davis <br /> Winston H.Hickox <br /> Secretaryfor Sacramento Main Office Governor <br /> Environmental Internet Address: http://w .sw eb.ca.gov/r gcb5 <br /> Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003 <br /> Phone(916)255-3000 FAX(916)255-3015 C <br /> C <br /> 18 July 2000 <br /> Ms. Margaret Lagorio tv <br /> San Joaquin County Environmental Health Division o _ <br /> 304 East Weber Avenue co <br /> Stockton, CA 95202 <br /> - :.r.: <br /> NON CONCURRENCE WITH SANJOAQUINC'OUNTY'SNOFURTHER ACTIONREQUIRED <br /> R DETERMINATION, REGAL #603, 6425 PA CIFIC A VENUE, STOCKTON, SAN JOA QUIN <br /> t <br /> COUNTY <br /> Board staff reviewed San Joaquin County's Environmental Health Division Case Closure Summary for <br /> Regal #603 and the supporting documents submitted by Western Geo-Engineers and Blakely <br /> Environmental. Board staff does not concur with San Joaquin County's closure recommendation due to <br /> the following: <br /> t • The lateral and vertical extent of groundwater contamination has not been defined; <br /> • The groundwater has not been monitored for all fuel oxygenates and fuel additives; j <br /> • The status of a domestic water supply well southeast of the site has not been determined; and <br /> • The quarterly groundwater monitoring has not been conducted since January 1999. <br /> 6 <br /> If you have any questions,please call Marty Hartzell at (916) 255-3115. <br /> ii Y CARLTON <br /> Executive Officer <br /> Enclosures (Memo and App. B Checklist) <br /> cc: Ms. Elizabeth L. Haven, UST Program Manager, SWRCB, Sacramento <br /> Ms. Wennilyn Fua, UST Cleanup Fund, SWRCB, Sacramento <br /> 1 , <br /> California Environmental Protection Agency <br /> 0a Recycled Paper <br />