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Monsanto ra. * i.oc*Tiowi gt q wrj[ght - Anniston, Alabama 1l MBJtCl iriotoci December 29, 1970 F.C.B. Levels in Ambient Air at Anniston Plant ce J. T. Bell J. L. Corder G. L. Jesses J. C. Landwehr P. B. Hodges * TO ' W. B. Fapageorge Listed below is the data which haa been collected to date on P.C.B. loaaea to the atmosphere at Anniston. These samples were collected primarily In the ambient air at each designated location. Dace U/5 Samollns Location Aroclor Still Room P.C.B. Concentration ms/m3 Comments .376 X 10'3 1 still on Aroclor 1262 11/6 n/6 11/9 Tank Car Loading Plat form Aroclor Still Room .273 X lO-3 .095 X 10*3 Tank Car Loading Plat form .246 X 10*3 Loading Aroclor 1256 car Holding Aroclor 1262 in #3 Blend Tank Loading Aroclor 1262 Car 11/17 Tank Car Loading Plat form . Results not available Loading Aroclor 1256 Car 11/17 11/23 Warehouse Drumming Area Aroclor Still Room .573 X 10-3 1.068 X 10"3 Drumming Out Aroclor 1262 Distilling Aroclor 1262 11/24 Mon tar Hood ' 8.630 X IQ'3 Drawing Aroclor 1262 Bottoms This data Indicates that the ambient air In the Anniston Plant manufacturing locations is considerably lower than the levels reported by Monsanto at Newport In September, 1970. This Is probably because there has been very little manufacture of Liquid Aroclors at Anniston during this period. MGNS 0992Q6 Some problems have been encountered In sampling and analysis at Anniston which account to some degree for the low values. The prime sampling problem is the Inefficiency of the scrubbers at very high sampling volumes, (i.e. The scrubber Is not 1007* efficient at high air flow rates). A solution to this problem is being tested by going to a very low flow rate and sampling for a longer time. Analysis have been delayed because of the high priority which has been assigned to the waste water clean-up research. Plans are to continue sampling during January in an attempt to gather more reliable data on P.C.B. losses to the atmosphere. This data will be communicated to you at toon at it can be obtained. Your comments regarding this will be appreciated. Eugene C. Wright Jv HONS 099^07