ILLINOIS

POLLUTION

CONTROL BOARD

August

2,

1984

MODINE

MANUFACTURING

COMPANY,

Pet:Ltioner,

PCB

82—111

ILLINOIS ENVIRONMENTAL PROTECTION

)

AGENCY,

Respondent.

ORDER OF THE BOARD

(by

J.. Marlin):

This

matter comes before the Board upon a motion for

clarification and reconsideration timely filed on July

3,

1984

by Modine Manufacturing Company (Modine) concerning

the

Board~s

Opinion and

Order dated May 29, 1984.

The Ii-

linois Environmental Protection Agency

(Agency) filed its

response on

July

12, 1984.

On July 20,

1984

I’lodine filed

a motion

for

leave

to

file

its reply instanter,

Modin&s

reply is allowed by

the Board pursuant to 35

Ill, Adm, ~

103,140(c).

Modine requests the Board to clarify its prior Opinion

and Order in the following manner:

(1) note that

the in-

terim effluent and water quality

standards

values

are

monthly

averages;

(2)

define summer

as including the months of

May

through September and

winter as October through April;

(3)

reconsider and recalculate the summer un-ionized standard

using a temperature between 28°

to

35°C (82.4°

to

95°F),

pH

~

9, and

S mg/i ammonia nitrogen;

(4)

reconsider and re—

~a1culate

the

winter

un—ionized

ammonia

standard

using

a

:enperature of 10°C(50°F),

pH

of

9,

and

15

mg/I

(rather

than the ~i0mg1/l value used).

The

Board agrees that the standards listed

in the prior

~rder are monthly averages.

As to

(2)

above,

the

Board holds

that

the

recor&11

in this case supports summer

and winter

r~eriodsas being defined as the months May through

October

~nd

November

ti~roughApril, respectively regardless of

the

~v~nth1ydesignations listed in other

regulations not part

of

th~s

proceeding

The Board set reasonable ammonia nitrogen and

un-~ionized

~oni a standards

The

ammonia

nitrogen

standard

is

quite

~be~al

qiven the monthly

average and range given in

petitioner’s

I;

Particularly Tables

10 and

12 of Petitioner~s

Exhibit

l9~, Table 10 of petitioner~sExhibit 22.

---

Exhibit 22.

The winter limit

of

15

mg/i

is

twice

as

high

as

~:he

highest monthly average attained

since improvements were

made in

the

plant

s

treatment process.

The highpoint

of the

range

was

7.8

mg/I.

The un~ionizedammonia concentration

responds to temper-

ature,

ph,

arid ammonia. nitrogen

concentration.

The prior Board

Order set out limits

at

1.48

mg/I

during

the

summer

and 1.31

mg/I during the winter.

The winter

number was miscalculated

arid should

he

1.17

mg/i

on

pages

5,

6,

and

9

of

the

prior

Opinion

and

Order.

These

levels

are

far in

excess

of

the

0.04

mg/I standard.

Modine

incorrectly

assumes

that

the

winter

un~-ionized

am-

monia limit should have

necessarily

been

based

on

15

mg/.

am-

monia nitrogen and maximum temperature

and

pH values.

The

Board agrees with the Agency that “by

setting the

un-ionized

limit at the concentration commensurate with the maximum al-

lowable total ammonia concentration, maximum anticipated

tem-

perature and maximum probable pH

the

standard

would

be

rendered

entirely meaningless.~’

(Agency

Response

to Motion at 2).

The

temperatures

used

to

calculate

the

limits in

the

variance

are

offset by the relatively high pH and ammonia

nitrogen levels

used in the calculations.

The motion

for clarification is granted and the motion

for

reconsideration

is denied consistent with the views

ex-

pressed herein.

IT

IS

SO

ORDERED~

Board

Member

J.D.

Dumelle

dissented,

I,

Dorothy N. Gunn,

Clerk of the Illinois

Pollution

Control

Board, hereby certify that the

above Order

was

adopted on the

~

day

of

1984 by

a

vote

of

~yM.’un~C~k

Illinois Pollution