November 23, 1977IN THE MATTER OF: ) WATER QUALITY AMENDMENTS, ) R74-1, -8, -9HEXANE SOLUBLES ) SUPPLEMENTAL OPINION OF THE BOARD (by Mr.
Since that Order was entered, only two
comments have been received : the Metropolitan Sanitary Districtof Greater Chicago (MSD) filed written comments on November 22,1977, pursuant to leave granted by the Hearing Officer, andE.
I.
duPont deNemours and Company has communicated with the Board
in several telephone conversations .
Turning first to the comments of MSD, we agree that polar
materials, while "more readily biodegra...
Allowed
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