Document k3jN1gdXepwdkyKRme5x9kNE

cc: C. L. Bradford ^ R. A. Qarica - 1010 October 18, 1971 Mr. BUI Wright ...- National Lead Company of Ohio 0. Box 39158 Cincinnati, Ohio 45239 -------' Dear Mr. Wrightt This letter confirms your telecon of October 18 with Mr. Moore concerning your firm's use of Santovac 2 vacuum pump fluid. As indicated on their labels, Santovac 1 and Santovac 2 contain polychlorinated biphenyls (PCBa) of various types. As 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 forma 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 involving food or food-related products, animal feeds, pharmaceutical products, packaging materials involving any of such items and buildings where any of these items are manu factured or stored. If your vacuum system Involves any of the mentioned applications, or if your system is such that entry into the environment can not be prevented, you should replace Santovac 1 and 2 with nonPCB fluids immediately. Please contact your pump supplier for his recommended replacement product. Used Santovao 1 and 2 should be returned to Monsanto Company, W. 3. Krummrich Plant, Sauget, Illinois 62201, Attentions Supervisor Dept. 246 for proper disposal. This service is per formed at cost, which is ?0.03 per pound. 0sw 018106 STLCOPCB4004651 Mr. Bill Wright October 18, 1971 Page Two Any unused fluid can ba returned to the following addressi Monsanto Company, Quaany Plant, 100 Lafayette Avenue, St. Louis, Missouri, 63IOI, Attention* John Kuczynskl, Building 22. Very truly yours. /pep R. E. Hatton Technical Manager Hydraulics and Lubricants OSW 016107 STLCOPCB4004652