Document yrL8mNnDq01RdQadabEXXnyG6

Monsanto FROM (NAME ft LOCATION, fyj ^ g. Enp;man _ WQK DATE SUBJECT : May 5, 1971 : PCB LOSSES FROM WASHING REFERENCE TO : Mr. W. C. Engman - .* CC: Messrs. A. E. Leisy B. R. Williams C. F. Buckley J. E. Smith P. V. Brave W. A. Krull E. E. Stewartu^-" ! Jim Smith gave me the following estimates of rip track washing: Item Quantity Total Water Used/Item Tk Trailers 3/Mo. 2-3 M Gal. Tk Cars 4/Mo. 4-5 M Gal. If we use a solubility figure of 2 ppm as reported in the SAB interim storage sample, the following is obtained: Item flPCB/Item #PCB/Yr Tk Trailer 0.05# 1.8 #/Yr. Tk Car 0.084 4.0________ Total 5.8 #/Yr. Thus, it would appear that spending $15,000 to install kerosene washing facilities is not justified. This, of course, is de pendent on successful operation of the settling basin to remove all free PCB. A. L. Rasmussen Technical Services Dept. J- DSW 295930 STLCOPCB4065874