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EAST BAY WALTER J.BISHOP <br /> MUNICIPAL UTILITY DISTRICT MANAGER OF WASTEWATER <br /> w } <br /> r <br /> November 15, 1991 � . tu_ <br /> N O V 2 1ENNIRONMENTALP, <br /> MS . Diane M. Hinson, " REHS RMIT/SV{ � <br /> Environmental, Health Division <br /> San Joaquin County, Public Health Services <br /> P.O. Box 2009 <br /> Stockton, CA 95201 <br /> Dear Ms. Hinson: <br /> This is to confirm our conversation on October 30 , 1991 , during a <br /> workshop on "Site Assessment in -San Joaquin County" regarding <br /> EBMUD Stockton -Center,- 1804 West. Mai-n Street,, Stockton, Site Code . <br /> 1169 . <br /> I had discussed Stockton Center with you personally on. the above <br /> mentioned date, and you had- -verbally agreed to the District' s <br /> proposed sampling frequency of two times per year on Monitoring <br /> Wells 1, 2, & 3 and once a year on the four .new monitoring wells, <br /> 4 through 7. As you stated during our conversation, these four new. <br /> wells should be sampled once a year to track migration, even if <br /> current results showed below detection limit (N.D. ) . Our Problem <br /> . Assessment Report from. Weston Consultants showed N.D. for all <br /> monitoring wells except MW-.i:.. <br /> A copy of the Problem Assessment Report from Weston Consultants <br /> was sent to you on August 9, 1991 . A copy of the report was`, also <br /> sent t"o Gordon Boggs, CRWQCB, Central valley Region on the same <br /> date . <br /> If- you have any questions, please caul me at ( 510 ) 287-1618 . <br /> Sincerely, <br /> MOLLY ONG <br /> Wastewater Control Representative <br /> Source Control Division MS702 <br /> MKO:mko <br /> P.O.BOX 24055. OAKLAND. CA.94623-1055. (510) 465-3700 <br /> BOARD OF DIRECTORS NANCY J.NADEL . KENNETH H.SIMMONS.ANDREW COHEN <br /> JOHN A.COLEMAN. STUART FLASHMAN-.JOHN M.GIOIA .KATHERINE McKENNEY - <br /> Rewuaa Peau <br />