ILLINOIS POLLUTION CONTROL BOARD

July 23,

1981

IN THE MATTER OF:

PROPOSED AMENDMENT TO CHAPTER

2:

)

R80—11.

AIR POLLUTION, RULES

309, 312 AND 405,

)

NON-METHANE HYDROCARBON AND OZONE

)

STANDARDS,

OZONE EPISODE CRITERIA.

)

Proposed Rule.

First Notice.

ORDER OF THE BOARD

(by J. Anderson):

First notice of the revisions proposed by the Environmental

Protection Agency

(Agency) to Rules 312 and Rule 405 of Chapter

2:

Air Pollution, which relate to ozone, appeared in Illinois Register,

Vol.

4, No.

39

(September

26,

1980), pursuant

to the Board’s Order

of August

7,

1980.

During the course of the merit and economic impact hearings,

which have recently been completed,

the Agency also presented

testimony concerning deletion in its entirety of Rule 309, the

non—methane hydrocarbon standard.

This amended proposal,

filed

with the Board September 15,

1980, was published

in the

Environmental Register #224

(September 29,

1980).

In addition,

at the close of the last hearing,

the Agency

proposed that the ozone rules be re—drafted to list the 0.12 ppm

as the first and preferred measurement system, with the 235

micrograms per

cubic meter as the parenthetical,

less preferred

system, in conformance with federal

listing methods.

The Board accordingly directs that first notice of proposed

deletion of Rule 309 be published,

and that first notice of the

proposed amendments to Rules 312 and 405 be republished,

in

the

interests of informing interested parties of all components of

the R80-11 regulatory proposal,

No further hearings will be

scheduled, although written comments will be received for 30

days following publication of the first notice.

The Clerk is directed to cause publication of

first notice ~f

the following amendments to Chapter

2:

Rule 309: Neft-Me~ e-H~~eea~efts7

Repealed.

+~+

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43—105

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Rule

312:

~

&~ft~S

Ozone.

(a)

Standard.

The ambient air quality standard for

p~e~eehe~e-e~t?s ozone is 0.l2~p~rn

~6G

(235

microgra~nsper

cubic meter) *~—pp~+maximum one—hour concentration not

to be

exceeded

~

on

more

than

one

day

perj~ar.

(b)

Measurement

Method.

For

determing

conformance

with

the

ozone

air

quality

standard,

e’~oe1~e~e~4?

~

ozone

shall

be

measured

by

the

ozone—ethylene

reaction

method

as

described

in

36

Federal

Register,

pp.

22392—22393,

November

25,

1971,

or

by

an

equivalent

method

approved

by

the

Agency.

Rule

405:

CRITERIA

FOR

DECLARING

EPISODE

STAGES

(a)

Watch,

Alert,

and

Emergency

Levels

Averaging

Yellow

Red

Pollutant

Time

Advisory

Watch

Alert

Alert

Ozone

(ppm)

2—hour

-~G~

.12

--

--

1—hour

——

9i4~ 0.20

0.30

0.50

IT

IS

SO

ORDERED.

I,

Christan

L.

Moffett,

Clerk

of

the

Illinois

Pollution

Control

Boa~d,

hereby.~certifythat the above Order was adopted

on

the~~~’day

of

________________,

1981

by

a

vote

of

~‘,j.

C

C

Christan L. Moffett•,/Cierk

Illinois Pollution dor’itrol Board

43—106