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bccj^C. L. BRADFORD H. R. FORD ------ 1070 October 5, 1971 Mr. Bari Rasch................... ^ cT'piedmont Meta 1 Product s 506 Maledio Lawrenceville, Georgia 30245 Dear Mr. Raschi Thia letter confirms your telephone conversation of October 4* with Mr. Moore concerning your first's use of santovac 2 vacuum pump fluid. As indicated on their labels, Santovac l and Santovac 2 contain polychlorinated biphenyls (PCBs) 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 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 santovaa 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 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 cannot be prevented, you should replace Santovaa 1 and 2 with non-PCS fluids immediately. Please contact your pump supplier for his recommended replacement product. OSH 018118 STLCOPCB4004663 Mr. Earl Rasch Piedmont Metal Products October 5, 1971 Page 2 Ussd Santovac 1 and 2 should be returned to Monsanto Company, W. 0. Xruirenrlch Plant, Sauget, Illinois 62201, Attantioni Supervisor Department 246 for proper disposal. This service is performed at cost, which is $0.03 per pound. Very truly yours. R. S. Hatton Technical Manager Hydraulics and Lubricants /rod DSW 018H9 STLCOPCB4004664