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Monsanto . E. S. Tucker - RAD Laboratories - South Second Street IWlilCT MCI , December 3, 1969 . AROCLOR - WILDLIFE , NCR WATER SAMPLES ee. M , W. Farrar - S . 2nd R. E . Keller - S. 2nd W. R. R1chard - GO E. P. Wheele r - GO TO C. Paton J. T. Garrett CONFIDENTIAL Sample No. ppm Aroclor 1242 Found 1 1063 2 485 3 96.4 4 27.7 5 9.5 6 20.0 7 6.1 8 1 .8 9 6.6 10 1 .7 11 2.6 12 2.6 The electron capture fingerprints of the extracts from each sample do not show any indication of biodegradation. The decrease In concentration observed is probably the result of dilution and adsorption of the Arocl or 1 n the or 1 g.1 nal waste water as 1t moves from the NCR plant to the treatment facilities. However, it is possible fiat the h 1 gh level of "fresh" Aroelor present has completely masked any degradation that might have occurred to Aroclor previously discharged. db Enclosure E. S. Tucker * HIV. 11*09 TRAN 022090 deposition EXHIBIT PfC jr 299 HARTOLDMONOOO8IO6