Document 7R4LE07JDJVg7xOd5rwerejRo

Monsanto O LOCATION i E. S Tucker R&D Labs ' May 19, 1969 AROCLOR SAMPLES FROM WGK TO : Michael A. Pierle TSD - WGK 1700 So. 2nd - St. Louis Keller - So. 2nd C. F. Buckley - WGK W. R. Richard - GO E. P. Wheeler - GO P. B. Hodges - GO Analysis of the WGK sample by EC/GC produced the following results. Sludge from Sauget Village Waste Treatment Plant Aroclor 1242 Found 0.86 + 0.02% Waste Water from Village Effluent Interference* Sludge from Mississippi River 300' downstream of Planb Outfall 16.4 + 0.3 ppm** Waste Water from Aroclor Production Department 1.20 + 0.05 ppb *Aroclor 1242 present but the background was so intense a quantitative estimate could not be made. Probably slightly less than solubility limit "---10-100 ppb. Peaks with longer retention times indicated the presence of Aroclor 1254 so the number shown is slightly high for Aroclor 1242. Content slightly low for the total Aroclor content. GC/Mass analysis confirmed the presence of mono, di, tri and tetra polychlorinated biphenyls in the Sauget sludge sample. Ab MO WCV. II M E. S. Tucker MONS 09706<*