ILLINOIS POLLUTION CONTROL

BOARD

September 7,

1978

IN THE

MATTER

OF:

)

)

PROPOSED DETERMINATION OF

)

NO SIGNIFICANT ECOLOGICAL

)

PCB 78-61

DAMAGE FOR THE QUAD CITIES

)

GENERATING STATION.

COMMONWEALTH

)

EDISON

COMPANY.

INTERIM

ORDER

OF THE

BOARD

(by Mr. Dumelie):

On

March 8,

1978, Commonwealth Edison Company

(Edison)

filed

this Petition for a determination, as required by Rule 203(i) (5)

of the Board’s Water Regulati~ons,that thermal discharges from

Edison’s Quad Cities Generating Station have not caused and cannot

be reasonably expected to cause significant ecological damage to

the receiving waters of the Mississippi River.

A hearing in this

matter was held on July 19, 1978.

The Board finds that Edison’s Petition is insufficient, because

it fails to meet the requirements of Rule 602(c) (2)

and

(3)

of

the Board’s Procedural Rules.

The Rule provides,

in pertinent

parts:

“The following information, where applicable,

shall be filed:

(c)

Plume Studies

2.

Theoretical plume studies for all four seasons for

typical and worst case conditions.

Worst case

conditions shall be identified as worst conditions

of plant load factor, precipitation, ambient water

temperature, air temperature;

such studies~shall

consider the frequency of occurrence and their

joint probabilities of occurrence;

and,

3.

Theoretical plume studies which identify isotherms

at

30

Fahrenheit intervals down to ambient temper-

ature indicating three dimensional effects.”

31—371

---

—2—

Since

a

hearing

in

this

matter

has

already

been

held,

the

Board

remands

the

Petition

to

Edison

with

instructions

to

supply

the

required

information

in

an

Amended

Petition.

IT

IS

SO

ORDERED.

I,

Christan

L.

Moffett,

Clerk

of

the

Illinois

Pollution

Control

Board, hereby certify

the

above

Order

was

adopted

on

the

7~

day of ~~-j~~i

,

1978

by

a

vote

of

~/.c

~

Christan

L. Moffett )Clerk

Illinois Pollution~&ontrolBoard