Document zQnDrq451E2gKwax6p7a4ZQR6

V < BCC: D. E. ROUSH August 17, 1970 Mr. J. M. O'Leary Technical Superintendent Industrial Chemicals Division Hooker Chemical. Company Niagara Falla, New York 14302 * Dear Mr. O'Leary* Monsanto's Don Roush informed me of your interest in receiving more information regarding polychlori nated biphenyls. I am enclosing summaries of Monsmto'B position concerning the selective markets we will supply and the status of biodegradability and chronic toxicity studies. I have also included copies of our analytical methodology for the detection of PCB's in water, Bediment, biological specimens and gaBes. We would appreciate any comments your laboratory may have to offer concerning these procedures. Disposal of ocrap PCB by burning can be achieved if the temperature is maintained above 800C. Attempts to dispose at lower temperatures will result in vaporization or worse if partial oxidation to highly toxic furans or dioxins results. Stack gases from complete destruction must be scrubbed and neutralized to properly dispose of the resulting HC1 gas which is formed. . We have been working with the John Zlno Company, Tulsa, Oklahoma, on the design of an incineration scrubbing unit for installation in one of our plants within the next six months. DSW 018402 STLCOPCB4004946 You may be Interested in the disposal service offered by Rollins-Purlo, Inc., Wilmington, Delaware, James J. Mclaughlin, Director of Marketing, 302-4yii-5150. They have an operating unit at Gloucester, New Jersey capable of Incinerating chlorinated hydrocarbons. I hope you find this information helpful. If I can be of further service, please let me know. Sincerely, W. B. Papageorge Manager Bwlronmental Control os Enclosures Sent the following: - PCB's - Control of Escape to the Environment - PCB's - Biodegradation Studies - Summary - Interim Status Chronic Toxicity w/Aroclors 6 - Analysis of Water & Sediment for PCB . A - Analysis of Biological Materials for PCB p- A tentative procedure for the determination of airborne PCB C- Identification of PCB by gas chromatography/ma3S spectrometry OSW 018403 STLCOPCB4004947