Document RpKz3KrgZOeemrOmgqYdZYLxn

cc: C. L. Bradford P. L. Slayton - 1650 October 20, 1971 Nr. Reese DsHaven Daltach Systems Inc. 119 North Oliva Nadia, Pennsylvania 19064 Dear Nr. DeHaven: This letter conflras our discussions on October 19 concerning your Pirn's use of Santovac 2 pump fluid. As Indicated on their labels, Santovac 1 and Santovac 2 contain polychlorinated biphenyls (PCBa) of various types. As you are autre, PCBo have Increasingly cone under the scrutiny of various governmental agencies and scientific laboratories. In soat studies, certain PCBs have been found to be perslatent, an environmental contaminant and possibly Injurious to certain forns of bird, aquatic and anlnal life. Accordingly, It Is Important that PCBs be kept out of the food chain. We uant to remind your flru 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, lsakage, use, disposal, vaporisation or otherwise. Some specific applications where these fluids should definitely not be used are in vacuum systems Involving food or food-related products, animal feeds, pharmaceutical produots, packaging materials involving any of such items snd buildings where any of these Items art manu factured or stored. If your vacuum system Involves any of the mentioned applications, or If your system la auch that entry Into the environment can not be prevented, you should replaoe Santovac 1 and 2 with nonPCB fluids immediately. Pleaee contact your pump supplier for his recommended replacement product. Deed Santovac 1 and 2 should be returned to Monsanto Company, V. 0. Krummrlch Plant, Sauget, Illinois 62201, Attentloni Supervisor Dept. 246 for proper disposal. This service la per formed at cost, which la $0.03 per pound. Very truly youra. HONS 091068 R. E. Hatton Technical Manager Hydraulics and lubricants