Document Mo4w8QMVeNM2e2346ena7p13y

Monsanto from (Name ft location) g# e. Stewart, W. G. Krummrich Plant COMPANY CONFIDENTIAL DATE SUBJECT REFERENCE TO August 3* 1972 POLYCHLORINATED BIPHENYLS AND THE ENVIRONMENT WGK STRATEGY Mr. Art Leisy cc G. L. Bratsch i-W, C. Engman P. E. Heisler G. A. Hippe P. B. Hodges - E1SP W. B. Papageorge - B2NA J. R. Savage - B2SL At our strategy meeting of 6/16/72 we agreed to determine the present concentration of PCB in fish. We have com pleted this task and the results can- he summarized thusly. 1. Two each of four species of fish were taken from the Mississippi River about 13 miles south of the WGK plant. The PCB content in the edible portion ranged from 3 to 34 ppm. 2. Four fish of one species were taken from the Mississippi River about 100 miles north of the WGK plant. The PCB content in the edible portion ranged from 0.07 to 0.3 ppm. Downstream fish are above the FDA guidelines of 5 ppm. How ever, the fish we obtained are not unlike fish taken throughout the United States with regard to PCB content. I have reviewed the Interdepartmental Task Force on PCB's report "Polychlori nated Biphenyls and the Environment" for reported fish data that was used for comparison with our data. I recommend that we do not obtain any more fish data at this time. My guess is that we would get similar results. Professor Gunning from Tulane University (Monsanto consultant) said that we would need at least 100 fish taken over an extended period of time before we could note real cause and effect relations. I do not believe we should undertake such a program at this time. Perhaps more spot sampling in six months. I also recommend that Hap Horner visit the Governmental Analytical Lab at Cincinnati as part of our strategy to resolve (low key) any possible method differences and to establish contacts with their analytical people. /tm ; Edward E. Stewart ( Technical Services Department DSW 310858 STLCOPCB4070844