ILLINOIS POLIJUTION CONTROL BOARD

October 10, 1972

COMMONWEALTH EDISON COMPANY

(Dresden Fnit #3)

PCB 72-350

ENVIRONMENTAL PROTECTION AGENCY

INTERIM OPINION & ORDER OF THE BOARD (by Mr. Dumelle)

This is a petition for a one-year extension of the variance granted to

Edison on November 23, 1971 (PCB 70-21) from the thermal standards outside

of the applicable mixing zone on the Illinois River. That variance, by its

own terms, will expire on November 23, 1972.

We find it necessary to conduct a public hearing on this new petition

in order to fully comprehend the current

situation. Among

other

issues,

we would like to have more information on: the extent of the need for

Dresden power in view of the recent Quad-Cities plant startup; the degree

of improved water quality in this reach of the Illinois River as a result

of improved treatment upstream by both the GAF Corporation and the

Metropolitan Sanitary District of Greater Chicago; and the degree to which

the river diffuser acts as a barrier to the passage of fish.

The variance granted on November 23, 1971 is hereby extended for

sixty (60) days (January 22, 1973) on the condition that Edison files, by

November 1, 1972, a written waiver of the right to a final decision within

90 days from the filing date of the pending petition.

IT IS SO ORDERED.

I, Christan L. Moffett, Clerk of the Illinois Pollution Control Board, L

hereby certify the above Interim Opinion & Order were adopted on the

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day of October, 1972 by a vote of

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Christan L. Moffett, Cle~k’

Illinois Pollution Control Board

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