December 15, 2006

Pollution Control Board

Dorothy Gunn, Clerk

JRTC

100 Randolph Street, Suite 11-500

Chicago, IL 60601

RECEIVED

CLERK'S OFFICE

DEC 2 3 2006

STATE OF ILLINOIS

LaSalle County, Illinois

City Offices -

745 Second Street - La Salle, Illinois 61301-2599

wwwlasalle-il.go v

Fax: 815-223-9508

City of LaSalle

RE: Proposed Amendments to Dissolved Oxygen Standard

35 ILL. ADM . Code 302 .206

Pollution Control Board Rule R04-25

Dear MS . Gunn :

The City of LaSalle would like to record its support for the

Illinois Association of Wastewater Agency (IAWA), petition

R04-25 .

pollution Control Board

Art Washkowlak

Mavnr

City Office : 815-2233753

Virginia Kochanowski

City81522541077IScrk

Fran Baratta

City frvos,ae,

815-22 :147211

Pam Broviak, P.E .

Clly rlnghirrr/I)ir . 111' Public Works

815-22 -7011

Samuel T

. McNeilly

Supcrintendenl o1' I'ulilir Works

81'-2238344

Joanne M

. Mllby

Comptiolivi

1315.223-15811

Attorney: James McPhedran or

Anthony Raccuglia & Associates

1315-223-112111

Rob Uranlch

Chief of I'ulio'

815J223 2131

Andy Bacldore

Iliii

815-223-11804I

:hiel'

Brian Maddox

Ihuiloing81522-2980"sped...

We have followed these hearings closely and feel that the

evidence supports the position of the IAWA as originally filed .

That filing would establish a dissolved oxygen water quality

standard that is protective of Illinois' surface waters and

biological resources . That petition is founded on good science

and is attainable in the least disturbed water systems

. The IAWA

position appears to establish a seasonal dissolved oxygen standard that is more protective

of fish, insect and benthic organisms than is suggested in the USEPA National Criteria

Document . The dissolved oxygen minimum concentration of 3

.5 mg/L is requested by

IAWA.

We do not agree with the position supported by the Illinois Department of Natural

Resources and the Illinois Environmental Protection Agency . These agencies have not

proven their cases for their proposed dissolved oxygen concentrations in surface waters

.

The adoption of IEPA proposed concentrations would continue a water quality standard

that is unattainable even in the least disturbed surface waters

. The establishment of river

segments held to a different standard without evidence to justify such a designation is of

particular concern

. We are concerned that establishing these conditions in regulatory

form shall cause unnecessary and burdensome costs to the citizens of the State, and may

be creating unreasonable requirements for communities that can otherwise meet the more

achievable IAWA proposed standard .

---

IPCB-Proposed Rule R04-25

December 15, 2006

Page 2

We are also including weekly dissolved oxygen data point readings from January through

August of 2006 generated by the City of LaSalle Wastewater Plant personnel

. These data

points have been monitored at the end of our chlorine contact tanks, effluent pumping

well and Illinois River outfall

. These may be of interest to IDNR or IEPA .

We are encouraging the Board to adopt the IAWA petition R04-25 as filed

.

Sincerely,

(z.

t4

---

Arthur J . Washkow' k

---

s

LASALLE WASTE WATER DISSOLVED OXYGEN READS

2604

DO /TEMP

DO /TEMP

DO /TEMP

DATE DAY CONTACT CHAMBER WET WELL

OUTFALL

INITIALS

1\1t

M

1 .83/11

.5

6.80/11 .5

7.96/11 .3

MC/JM

1\23 ,

1 .81/12 .0

6.72/12.0

8.30/12.0

JM/RB

1\30

M

2.49/11 .9

7.50/11 .9

8.47/11 .9

JM/KD

2\6

M

2.78 / 11 .3

7.35/11 .2

8 .81 / 11 .3

JM/RB

2\13

n1

3.29/11

.1

7.31/11 .1

8 .70/11 .2

JM

2\20 M

2.70/10.4

7.21 / 10.4

8.42/10.5

JM

2\27 rl

3.33/11 .3

7.63/11 .1

9.25/10.9

RB

3\6 M

2.17/11 .0

6.94/10 .9

8 .33/10.9

RB

3\14 T

2.79/11 .3

7.40/11 .0

9.17/9 .7

JM

3\20

ri

2.44/12 .0

6.66/12.0

9.34/8 .7

JM

3\27

2.34/12.3

6.60/12 .3

7 .84/12.3

JM

4\3 M

4.47/11 .7

7.43/11 .7

7.87/11 .8

JM

4\10 M

1 .38/13 .0

6.29/13.1

7 .78/13.0

RB

4\18

T

2.1/14 .1

6.47/13 .8

RIVER FLOODED

JM

4\24 r'

1 .97/14.9

5.97/14 .9

6.80/15.0

JM

5\1

M

1 .41/14 .6

5.82/14 .6

8.22/14.6

JM

5\8 M

3.13/15.8

6.51/15 .8

7.85/15.7

RB

5\15 ,

2.45/14.9

6.32/14.9

7.32/15.2

JM

5\22

,

2.27/15.7

6.57/15.7

7.80/15.8

JM

5\30

T

2.00/18.7

6.28/18 .2

6.40/18.1

JM

6\5

M

.

2.07/18.5

8.21/18.1

7 .21/18.3

JM

6\12

M

2.34/17 .3

62/17.1

7.34/17.3

JM

6\19

M

1 .69/19.7

5.68 / 19.4

6.82/19

.3

JM

6\28

M

3.19/19 .6

6.16/19.6

7.07/19.6

JM

7\3 ,

1

.43/21 .1

5.43/20 .7

6.80/20.6

JM

7\10

M

2.15/20 .9

5.55/20.9

6.82/20.9

JM

7\17

1 .68/21 .9

5.64/21

.7

7.12/20.7

MC

7\24

M

2.35/22.0

5.68/21 .7

7.05121 .7

MC

7\31

M

2.57/22.3

5.66/23.0

6.65/22 .8

KD

8\7 r

2.37/22 .7

5.43/22 .7

5.87/22 .4

RB

8\14

M

2.98/23.0

5 .77/23.0

6.73/22 .9

RB

8\21

M

2.15/21

.4

5.65/21 .9

6.94/22.4

JM

8\28

rt

1 .85/22.3

4 .62/22.3

6.88/22.5

JM