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D. RX PS. Y <br /> The RI / FS due July 1 , 1989 is being written. <br /> A meeting with all consultants is scheduled <br /> for mid-June to review all data, recommend- <br /> ations and to develop any missing data or in- <br /> formation necessary to complete the RI/FS. <br /> E. Water Treatment Plant. <br /> The water treatment plant has experienced an <br /> increasing pressure drop thru the primary <br /> anion exchanger. Samples of the resin beads <br /> were sent to Rohm & Haas for tests. These <br /> tests are complete, recommendations have been <br /> received and were implemented in late May. <br /> The unit is now at full capacity. Changes <br /> have been made to the system to allow the two <br /> anion exchange units to operate in a dual <br /> mode. The current plan is to begin twenty- <br /> four ( 24) hours per day operation the week of <br /> June 12, 1989. <br /> Please advise if you have any questions. <br /> Sincerely, <br /> THE MARLE(Y� )COOLING TONER CO. <br /> David W. Bates <br /> Chief Production Engineer <br /> Attachment <br /> DWB/jel <br /> cc' s: Charles White-DHS Siebal-DHS <br /> Ronald Valinoti -SJEHD ary Reents-CRWQCB <br /> Jeff Zelikson-USEPA Tim Verhagen-TMC <br /> Hal Daley-Stockton Tom Hickey-Black & Veatch <br /> Karl Lytz- File <br /> Latham & Watkins <br />