Document LK3o57eJz1Rkgvp28DB57D96g

ccs C. L. Bradford R. A. Garcia - 1010 October 8, 1971 Mr. Gilbert L. Callen Allegheny Ludlura Steel Corp. Research Center Alabama and Pacific Avenues Brackenrldge, Pa. 15014 Dear Mr. Calient This letter confirms your telecon of October 8 with Mr. Moore concerning your use of Santovao 2 vacuum pump fluid. As Indicated on their labels, 3antovac 1 and Santovac 2 contain polychlorinated biphenyls (PCBs) of various types. A# you are aware, PCBs have increasingly come under the scrutiny of various governmental agencies and scientific laboratories. In some studies, certain PCBs have been found to be persistent, an environmental contaminant and possibly Injurious to certain forms of bird, aquatic and animal life. Accordingly, it Is important that PCBs be kept out of the food chain. We want to remind your firm of the extreme care 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, vaporization or otherwise. Some specific applications where these fluids should definitely not be used are In vacuum systems Involv ing food or food-related 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 vacuum system Involves any of tha mentioned applications, or If your system is such that entry into the environment oannot be prevented, you should replaoe Santovac 1 and 2 with nonPCB fluids immediately. Please contact your pump supplier for his recommended replacement product. Used Santovac 1 and 2 should be returned to Monsanto Company, W. 0. Krumrarich Plant, Sauget, Illinois 62201, Attention: Supervisor Dept. 246 for proper disposal. This service Is per formed st cost, which Is $0.03 par pound. Very truly yours. /POP R. E. Hatton Technical Manager Hydraulics and Lubricants OSW 017840 STLCOPCB4004385