ILLINOIS POLLUTION CONTROL BOARD

July 23, 1981

COMMONWEALTH EDISON COMPANY,

)

Petitioner,

V.

)

PCB 81—34

ILLINOIS ENVIRONMENTAL

)

PROTECTION AGENCY,

)

Respondent.

ORDER OF THE BOARD

(by I.

Goodman):

Upon the motion for reconsideration of the Illinois

Environmental Protection Agency (Agency) the Board hereby amends

its Order of July

10, 1981 to vacate conditions

1 and

2 of the

Order.

Condition

1 shall read as follows:

1.

During the

term

of this variance Commonwealth Edison

Company shall comply with the following thermal effluent standards:

The water temperatures at representative locations in the Main River

shall not exceed the following maximum limitations during more than

4

of the hours

in 12—month periods ending with any month.

Moreover,

at no time shall the water temperatures at such locations exceed the

following maximum limitations by more than 5°F,

January and February, 60°F;March, 70°F;

April, 77°F;May, 85°F;June,

July, August,

September,

and October, 90°F;November, 76°F;

and December, 70°F.

Condition

2 shall read as follows:

2.

Commonwealth Edison Company shall participate

in any

regulatory proceeding relating to the thermal standards in that

portion of the Illinois River affected by its discharge from the

Joliet Station during the term of this variance.

IT IS SO ORDERED.

I,

Christan L. Moffett, Clerk of the Illinois Pollution

Control

Board,, hereby certify that the above Order was adopted

on the

~3

-‘~-

day of

~

,

1981 by a vote of

______

‘~L4~

christan

f~.

Moffetf, ç?~erk

~-

Illinois Pollution Control Board

43—79