ILLINOIS POLLUTION CONTROL BOARD
February
 2,
 1989
IN THE MATTER OF:
 )
JOINT PETITION OF THE CITY OF MORTON
 )
 PCB 85—212
AND THE ILLINOIS ENVIRONMENTAL
PROTECTION AGENCY FOR EXCEPTION TO THE
 )
COMBINED SEWER OVERFLOW REGULATIONS
ORDER OF THE BOARD
 (by
 R.
 C.
 Flemal):
This matter comes before the Board upon
 a Motion to Modify
filed
 by the City of Morton (“Morton”)
 on January
 13,
 1989.
 The
Illinois Environmental Protection Agency
 (“Agency”),
 as Joint
Petitioner,
 filed
 its concurrence with and plea for grant of
 the
motion
 on January 23,
 1989.
Joint Petitioners request
 a second change
 in the completion
date specified
 in Condition
 1(a)
 of the Board’s May 9,
 1986 Order
in this matter
 (“Original Order”).
 In the Original Order
Condition 1(a)
 read:
a.
 The Village
 shall provide excess flow treatment at
Plant
 2
 for all excess flows
 reaching
 the plant,
consisting of primary treatment
 followed by
chlorine contact, including
 flow measurement and
sampling,
 by September
 30,
 1988.
Condition
 1(a) was
 first modified by Board Order
 of May
 5,
1988
 (“Modified Order”)
 in response to
 a request
 from Joint
Petitioners.
 That modification extended
 the completion date
 to
September
 30,
 1989.
Justification for this first modification was based on
 the
need
 for
 time
 to obtain data upon which design of
 the facilities
necessary
 to comply with Condition
 1(a)
 could proceed.
 Joint
Petitioners pointed out that Morton had completed
 separation
 of
sewers tributary
 to Plant No.
 2 well
 ahead of
 the October,
 1991
deadline specified
 in Condition 1(c)
 of
 the Original Order.
Separation
 of these sewers
 in turn resulted
 in fewer excess flow
events
 at Plant No.
 2 than had been earlier anticipated.
 In
fact,
 no precipitation—related excess flow events
 at
 all occurred
at Plant No.
 2 during 1987,
 in contrast
 to
 the
 three
 or four
events per year which had occurred prior
 to
 the upstream sewer
separation (Modified Order
 at 1).
 Joint Petitioners therefore
sought,
 and this Board granted,
 a one—year extension of the
compliance date, with the extension
 intended
 to allow Morton time
to obtain
 a better understanding of the new expected frequency
and extent of excess flow events,
 and thereby
 to appropriately
design the control facilities
 (Id.).
96—03
—2—
Justification for the instant
 request is identical
 to that
presented
 in the prior request
 for modification.
 No excess flow
events have occurred since issuance of
 the Modified Order,
perhaps related
 to the drought conditions
 of
 1988.
 Morton
therefore contends that
 it still has not been able to obtain the
monitoring
 data necessary to allow final design of the Condition
1(a)
 control facilities.
 Morton further contends that choice
among
 final design options could result
 in savings of $150,000.
The Agency believes that allowing another year
 for
monitoring would
 be appropriate.
 The Agency points out that
 the
environment has suffered
 no harm
 from the delay
 in construction
of the Condition
 1(a)
 facilities,
 and that
 it
 is
 in the best
interests
 of Morton and the State
 that environmental control
 funds be
 spent effectively and efficiently.
The Board hereby grants Morton’s motion to modify the
completion date contained within Condition
 1(a),
 as specified
 in
the Board’s prior Orders
 in PCB 85—212
 (May
 9,
 1986,
 and May
 5,
1988),
 to September
 30,
 1990.
 This grant
 is subject
 to the
condition
 that all other uncompleted requirements of
 the
Board’s prior Orders
 in
 this matter shall
 remain
 in
 full
force and effect
 as
 issued.
IT
 IS SO ORDERED.
J.D.
 Dumelle concurred.
I,
 Dorothy
 M. Gunn,
 Clerk of the Illinois Pollution Control
Board,
 hereby certify
 thatf the above Order was adopted
 on
the
 ~
 day of
 --
 —,
 1989,
 by a vote
of
 7-c
 .
 7
/
 /
//
/
~
Dorothy
 ?4/2Gunn, Clerk
Illinois Pollution Control Board
96—04