ILLINOIS POLLUTION CONTROL BOARD

January

9, 1915

)

NORTH SHORE SANITARY DISTRICT

)

)

)

v.

)

PCB 74-342

)

)

ENVIRONMENTAL

PROTECTION

AGENCY

)

)

OPINION AND ORDER OP THE BOARD (by Mr. Dumeile):

Petition for variance was filed September 20, 1974.by the

North Shore Sanitary District (“District”)

•

The

petition

requests

an extension of the variance granted January 10, 1974

(PCB 73-134)

and asks to retain the use of 5,271 population equivalents (“P.E.”)

remaining of 8,000 P.E. previously authorized for sewer connection

permits tributary to the District’s Clavey Road treatment plant.

The Petition also asks to relieve the sewer ban entirely

from the subject treatment plant.

No public hearing was held.

On

October 17,

1974, the records of prior related proceedings were

stipulated into this cause by the District.

The Environmental

Protection Agency filed its recommendation on December 9, 1974 and

recommended the grant of the variance for an additional year.

It

did not recommend lifting the sewer ban entirely at this time.

Effluent data for the Clavey Road treatment plant for the

period from January through August, 1974 inclusive, show average

levels of 17 mg/i BOD

and 17 mg/i of suspended solids (“55”)

compared to the appii~ablestandards of 10 mg/i BOD5 and 12 mg/i

SS.

The Agency ascribes these higher levels to the shakedown

problems of a new treatment plant.

It points out that the recorded

plant flows range from 5.8 million gallons per day (MGD) to

15.7

MGD compared to the plant capacity of 17.8 MGD.

Thus the 5,271

P.E.

(at 100 galLons per P.E. per day) would only add 0.53 MGD to

the plant load and the

effluent

quality

should

not

deteriorate

because of this.

The Agency refers to the stipulation set out in full in

PCB 73-134 which gave target dates for completion of certain

projects as follows:

15—195

---

February

~,

1b74

Ai~h

and

Park

The~ront

interceptor

Ju~y,l,1974

Oie~clew ~reatmcnt ~aciJ~ties

at

1a~

~~ovember 1,

1974

~irst phase

of Middle fork Intercepto

sewer,

The Agency states

that of the above only the Highland Pa~a

interceptor has been conp~eted~ The date for completion ~f the

Midde

Fork

interceptor

is

io~known, according to the Ag~icy.

~tndthe date for completion of the overt ow Lacilities ha~sl~pped

one tear

to July

1,

~

S nce tne requirements

o

tde stipu1ae~onhave not b~cr~

the Agency recommends against L~ftingth~sewer bar comp1~tei

be

variance is granted and the unused balance of th

8,000

P,E, granted on January 10

1974

shall remain usable

for an additional year.

The applicable conditions

in PCB 73~

(both Stipulation and Order

shall remain in effect.

Thrs Opinion constitutes the Board!s findings

of fact

and

conclusions of

law,

1.

Vaiiance

is granted until January

9,

~976 to the North

Shore Sanitary District to

issue connection permits up to

8,000 P,E,

less

those

issued under PCB 73~l34,

2,

The District shall report to the Board and Agency by

March

1,

1975

the

scheduled completion dates for the

overflow facilities and the Middle Fork interceptor

sewer

(first phase),

3,

All applicable conditions

in the stipulation and order

in PCB 73~l34shall remain in effect,

IT IS SO ORDERED,

I, Christan

L. Moffett~ Clerk of the Illinois Pollution

Control Board, her~bycertify the above Opinion and Order were

adopted on the ~day

of January, 1975 by

a vote of

5~.d

~stane,totett,er~

Illinois Pollution Control ~bard

5

196