Document bDVN6D5V1wDJgpae1JO4ZndD

bcc: C. L. Bradford R. A. Garcia - 1010 October 1, 1971 Mr. 3. Cherry TRW Metals Division Minerva, Ohio 44637 Dear Mr. Cherryt This letter confirms your telecon with Mr. Moore on September 30, concerning TRW'o use of Santovac 2 vacuum pump fluid. As Indicated on their labels, Santovac 1 and Santovac 2 contain poly chlorinated biphenyls (PCBs) of various types. As you ere aware, PCBs have Increasingly come under the scrutiny of various governmental agencies and scientific laboratories. In some studies, certain PCBa have been found to be persistent, an environmental contaminant and possibly injurious to certain forms of bird, aquatic and animal life. Accordingly, it la Important that PCBs be kept out of the food chain. We want to remind your firm of the extreme oere that must be taken by users of Santovac 1 and Santovac 2 fluids to prevent any entry Into the environment through spills, leakage, use, disposal, vaporisation or otherwise. Some specific applications where these fluids should definitely not be used are In vacuum ayatems Involving food or foodrelated products, animal feeds, pharmaceutical products, packaging materials involving any of such Items and buildings where any of these Items are manufactured or stored. If your veomum system Involves any of the mentioned applications, or If your ayatem la such that entry Into the environment oannot be pre vented, you should replace Santovac 1 and 2 with non-PCB fluids Immediately. Please contact your pump supplier for hla recommended replacement product. Dsed Santovac 1 end 2 should be returned to Monsanto Company, V. 0. Krunmrloh Plant, Saugat, Illinois 62201, Attentloni Supervisor Dept. 246 for proper disposal. This service la performed at cost, which is $0.03 per pound. Very truly yours, MONS 092173 R. S. Hatton Technical Manager