IN THE MATTER OF :

PROPOSED AMENDMENTS TO

DISSOLVED OXYGEN STANDARD

35 TILL

. ADM. CODE 302 .206

TO : Dorothy Gunn, Clerk

Illinois Pollution Control Board

James R. Thompson Center

100 W. Randolph Street 11-500

Chicago, Illinois 60601

(OVERNIGHT VIA MAIL)

SEE ATTACHED SERVICE LIST

Regular Mail

PLEASE TAKE NOTICE that we have filed with the Office of the Clerk of the

Pollution Control Board the Illinois Environmental Protection Agency's

Pre-filed

Testimony of Toby Frevert and Roy Smogor

and the Illinois Department of Natural

Resources' Pre-filed Testimony of Joel Cross,

a copy of which is herewith served upon

you.

Dated

: April 3, 2006

BEFORE THE ILLINOIS POLLUTION CONTROL BOARD

ILLINOIS ENVIRONMENTAL PROTECTION ILLINOIS DEPARTMENT OF

AGENC

NATURAL RESOURCES

By: .,

cr -d~

e ie N. Diers

Stanley io auski, Jr .

A ant Counsel

One of Its Attorneys

on of Legal Counsel

Illinois Environmental Protection Agency

1021 North Grand Avenue East

Springfield, Illinois 62794-9276

(217) 782-5544

NOTICE

Richard McGill, Hearing Officer

Illinois Pollution Control Board

James R

. Thompson Center

100 W

. Randolph Street, Suite 11-500

Chicago, Illinois 60601

(OVERNIGHT VIA MAIL)

Illinois Department of Natural

Resources

One Natural Resources Way

Springfield, Illinois 62702-1271

THIS FILING IS SUBMITTED ON RECYCLED PAPER

RECEIVED

CLERK'S OFFICE

APR 0 4 2003

R04-25

STATE OF

ILLINOIS

Pollution Control Board

---

IN THE MATTER

BEFORE

OFTHE

:

ILLINOIS POLLUTION CONTROL BOARD R ~-

CL-RK',s

-

OF HCE

)

PROPOSED AMENDMENTS TO

)

R04-25

DISSOLVED

OXYGEN STANDARD

Ai R (I

r

~-, ),

)

35

III . Adm . Code 302 .206

STATE OF

ILLSiat

;1r,,

)

Pollution Control Boaro

PRE-FILED TESTIMONY OF TOBY FREVERT

I am Toby Frevert, Manager of the Division of Water Pollution Control for

the Illinois Environmental Protection Agency ("Illinois EPA") . I thank the Board

for hearing my testimony today and allowing Illinois EPA and the Illinois

Department of Natural Resources ("IDNR") additional time to work on a joint

recommendation.

Since the last hearing in August 2005, Illinois EPA and IDNR have

continued work to develop a joint recommendation on modification and updates

to Illinois' current dissolved oxygen standard . Illinois EPA and IDNR staff

reviewed and analyzed General Use water data to determine what waters

warrant a dissolved oxygen standard incrementally higher than a base level

deemed generally protective of most general use waters . This process proved to

be complex and time consuming . Joel Cross and Roy Smogor will present a

brief overview of the process used to develop our recommendation, and other

personnel of the Agency and Department will be available to respond to

questions and provide more specificity as desired .

Our recommendation to the Board establishes a two leveled dissolved

oxygen standard . Level One is a base condition patterned after the structure

recommended in USEPA's National Criteria document and generally protective of

a full and diverse aquatic community. Level Two sets incrementally higher

1

---

dissolved oxygen levels for those systems supporting species believed to

associate with higher ambient dissolved oxygen concentrations . Specific

language of our recommended dissolved oxygen standard is contained in

Attachment 1 of this testimony for the Board's consideration . Significant

components of that recommendation include :

1)

Incorporation of a narrative provision supplementinq the numeric

provisions of the standard to assure environmentally acceptable conditions are

provided throuqhout the full spectrum of General Use waters . Illinois EPA and

IDNR are recommending that General Use waters at all locations maintain

sufficient dissolved oxygen concentrations to prevent offensive conditions, as

required in Section 302 .203 of the Illinois Administrative Code . Quiescent and

isolated sectors of General Use waters including wetlands, sloughs, backwaters,

and lakes and reservoirs below the thermocline shall be maintained at sufficient

dissolved oxygen concentrations to support their natural ecological functions and

resident aquatic communities .

2)

Average concentration and averaqe daily-minimum concentration :

The Illinois EPA and IDNR recommend the inclusion of 5 .0 mg/L as a daily

minimum and 6.0 mg/I as a daily mean averaged over 7 days during the months

when early life stages are present

. For the rest of the year, Illinois EPA and

IDNR support 3.5 mg/I as a daily minimum, 4.0 mg/I as a daily minimum

averaged over 7 days and 5.5 mg/I as a daily mean averaged over 30 days for

those waters not listed as needing a higher dissolved oxygen concentration . The

Agency and Department believe these concepts recognize the importance of

---

maintaining sufficiently high levels of dissolved oxygen that ensure long-term

support of healthy aquatic life communities .

3)

Enhanced waters: The Agency and Department have identified

several segments (about 6% of the stream segments in the State) that warrant

an enhanced level of protection . These higher dissolved oxygen standards

include a daily minimum of 4.0 mg/I which is 0.5 mg/I higher than our base

recommendation, daily mean value averaged over a 7-day period of 6

.25 mg/I

which is 0 .25 mg/I higher than the base recommendation and a daily mean

averaged over 30 days of 6

.0 mg/I, which is 0.5 mg/I higher than the base

recommendation.

Our recommendation also includes provisions regarding applicability and

implementation considerations . Much of the testimony and discussion during this

proceeding relate to the dynamic and variable nature of oxygen concentrations in

both the spatial and temporal realm of any specific resource . To address this

natural variation in dissolved oxygen concentrations, subparagraph (d) of our

proposed regulatory language includes provisions on measurement and

calculation of values to assess attainment of the standard . Language has been

included within the numeric limits of subparagraphs (b) and (c) specifying that

those numeric values apply in the main body of a stream . In other words, we are

not restricting applicability of these values to either pool or riffle stretches ; rather

it applies throughout . The obvious departure from this uniform application

applies to isolated areas such as backwater sloughs, and portions of lakes and

3

---

reservoirs below the thermocline, where lower oxygen concentrations can be

expected to occur naturally .

Finally, I would again like to thank the Board for the opportunity to submit

pre-filed testimony and I would be happy to answer any of the Board's questions

at the conclusion of the presentation of testimony from the Agency and the

Department .

4

Toby Frevert~ve

---

ATTACHMENT

1

---

302.100 Definitions

"thermocline" means the plane of maximum rate of decrease of temperature with

respect to depth in a thermally stratified body of water .

Section 302.206 Dissolved Oxygen

General use waters shall maintain dissolved oxygen concentrations at or above

the minimum values contained in subsections (a), (b) and (c) of this Section .

(a)

General use waters at all locations shall maintain sufficient dissolved

oxygen concentrations to prevent offensive conditions as required in Section

302 .203 of this Part . Quiescent and isolated sectors of General Use waters

including but not limited to wetlands, sloughs, backwaters and lakes and

reservoirs below the thermocline shall be maintained at sufficient dissolved

oxygen concentrations to support their natural ecological functions and resident

aquatic communities .

(b)

Except for those waters identified in Appendix D of this Part, the main

body of all streams, the water above the thermocline of thermally stratified lakes

and reservoirs, and the entire water column of unstratified lakes and reservoirs

shall not be less than the following :

(1) During the period of March through July a dissolved concentration of:

(A) 5.0 mg/I at any time ; and

(B) 6.0 mg/I as a daily mean averaged over 7 days.

(2) During the period of August through February a dissolved oxygen

concentration of :

(A) 3.5 mg/I at any time;

<B) 4.0 mg/i as a daily minimum averaged over 7 days and ;

(C) 5.5 mg/I as a daily mean averaged over 30 days

.

(c)

All sectors within the main body of all streams and rivers identified in

Appendix D of this Part shall not be less than :

(1) During the period of March through July a dissolved oxygen

concentration of :

(A) 5.0 mg/I at any time ; and

(B) 6.25 mg/I as a daily mean averaged over 7 days .

ATTACHMENT 1

---

(2) During the period of August through February a dissolved

concentration of:

(A) 4.0 mg/I at any time;

(B) 4.5 mg/I as a daily minimum averages over 7 days ; and

(C) 6.0 mg/I as a daily mean averaged over 30 days .

(d)

Assessing attainment of dissolved oxygen mean and minimum values .

(1) Daily mean is the arithmetic mean of dissolved oxygen value

measured in a single 24-hour calendar day .

(2) Daily minimum is the dissolved oxygen value as measured in a single

24-hour calendar day .

(3) The measurements of dissolved oxygen used to determine attainment

or lack of attainment with any off the dissolved oxygen standards in this Section

must assure daily minima and daily means that represent the true daily minima

and daily means .

(4) The dissolved oxygen value used in calculating or determining any

daily mean or daily minimum should not exceed the 100% air-saturation value .

01sGelved oxygen (ST-OR T number 00300) chaff not be ioee than 6 .0 mg/I

Section 302 .APPENDIX D

List of Streams Segments for Enhanced Dissolved Oxygen Protection

---

BEFORE THE ILLINOIS POLLUTION CONTROL BOARD

IN THE MATTER OF :

)

PROPOSED AMENDMENTS TO

)

R04-25

DISSOLVED OXYGEN STANDARD

)

35 III . Adm . Code 302 .206

)

REC

,EI VED

APR 0 4 2005

Pollution

STATE OF

Control

ILLINOIS

Board

PRE-FILED TESTIMONY OF ROY SMOGOR

Good morning . My name is Roy Smogor

; I have been employed by the Illinois

Environmental Protection Agency ("Illinois EPA") for about 6 years

. I am a stream

biologist with a Master of Science degree in Fisheries and Wildlife Sciences from

Virginia Polytechnic Institute and State University

. I also have a Bachelor of Science

degree in Biology from University of Illinois at Champaign-Urbana

. I have several years

of experience, in the states of Virginia and Illinois, in developing ways to use information

about fish and other aquatic life to determine the overall condition, or health, of streams

.

Currently I am a Public Service Administrator in the Surface Water Section of the

Bureau of Water

. The Surface Water Section is responsible for monitoring the resource

quality of Illinois streams and lakes

. Specifically, we collect biological, chemical, and

physical information from waters throughout the state and then interpret and report on

this information

. Our activities help guide the protection, management, and regulation

of Illinois' aquatic natural resources

. My pre-filed testimony in this matter provides an

overview of the Technical Support Document that explains the joint recommendations,

of Illinois EPA and the Illinois Department of Natural Resources ("Illinois DNR"), for the

General Use water quality standard for dissolved oxygen

.

Since the August 2005 Board hearing in this matter, Illinois EPA has participated

in developing a final joint recommendation in response to proposed changes in the

dissolved oxygen water quality standard made by the Illinois Association of Wastewater

---

Agencies ("IAWA")

. Illinois EPA believes the current dissolved oxygen standard for

Illinois General Use waters is too simplistic

. The current standard inadequately

accounts for the varied dissolved oxygen requirements of aquatic life in these waters

.

Moreover, the current standard does not account for how dissolved oxygen

concentrations vary across a broad range of natural aquatic conditions in Illinois

.

The revisions to the current dissolved oxygen General Use water quality

standard being recommended today by Illinois EPA and Illinois DNR are based primarily

on the U . S

. Environmental Protection Agency's (U .S.

EPA) 1986 national-criteria

document for dissolved oxygen

. Illinois EPA and Illinois DNR used this 1986 document

as a foundation from which to interpret and incorporate more-recent information

specifically applicable to the dissolved oxygen needs of aquatic life in Illinois waters

.

Although revisions to the current dissolved oxygen standard proposed by IAWA in April

2004 are also based on U .S

. EPA's national-criteria document, Illinois EPA's

recommendations differ from those of IAWA in the four following ways

:

1) Illinois EPA recommends two levels of numeric standards, with an enhanced level of

protection for waters inhabited by organisms especially sensitive to low dissolved

oxygen levels

. For a small subset of General Use waters-about 8% of the total

General Use stream miles-Illinois EPA recommends a higher level of dissolved oxygen

protection than proposed by IAWA

. This higher level is intermediate between the

"coldwater" criteria and 'warmwater' criteria recommended in U

.S . USEPA's national-

criteria document

. Some Illinois waters require dissolved oxygen levels higher than

U.S

. EPA's "warmwater" criteria because of the presence of a meaningful amount of fish

---

or macro invertebrates that are more sensitive to low dissolved oxygen than the

relatively few organisms on which U .S EPA's "warmwater" criteria are primarily based .

2) Illinois EPA recommends a narrative dissolved oxygen standard for waters that

naturally cannot achieve consistently higher levels of dissolved oxygen, such as

wetlands, sloughs, river backwaters, and portions of lakes and reservoirs below the

thermocline.

3) Ilinois EPA recommends an annual period one month longer than that proposed by

IAWA for the protection of sensitive life stages of fish . Namely, March through July

rather than March through June .

4) Consistent with the U .S . EPA national-criteria document, Illinois EPA recommends a

30-day chronic dissolved oxygen standard in the form of a daily mean averaged over 30

days

; this 30-day mean is not included in the IAWA proposal .

These recommendations are reflected in the language filed with the Board as

Attachment 1 to the Pre-Filed testimony of Toby Frevert

.

I participated in several aspects of the development of the Technical Support

Document and joint Illinois EPA and Illinois DNR recommendations in this proceeding .

Also, I am Illinois EPA's primary author for the joint Technical Support Document that

was pre-filed with the Board with this testimony

. In January 2006, I talked (with Edward

T

. Rankin about his research on relations between stream fishes and dissolved oxygen

in Ohio

. We discussed how Illinois EPA and Illinois DNR were using his results to help

identify Illinois fish species that are especially sensitive to low dissolved oxygen and

thus potentially deserving of higher dissolved oxygen standards

. I worked with Illinois

EPA and Illinois DNR biologists and natural-resource managers to determine how to

---

identify which streams in Illinois need higher minimum dissolved oxygen concentrations

than those represented by the U .S . EPA "warmwater" criteria

. After the two agencies

co-developed an approach, Illinois DNR took the lead in identifying the Illinois stream-

fish and mussel species that are most sensitive to low dissolved oxygen . Illinois EPA

led the effort to determine an analogous list of most-sensitive stream

macroinvertebrates, excluding mussels . After the two agencies analyzed biological

information to determine which stream sites had meaningful amounts of sensitive

organisms, I extrapolated this site-specific information to identify the stream segments

that require the higher recommended level of dissolved oxygen standards . I am

available to answer questions about or to provide examples of this extrapolation

process.

Illinois EPA and Illinois DNR collaborated extensively to develop the technical

scientific basis and to perform the analyses that culminated in the joint recommended

revisions to the dissolved oxygen standard . The experience and expertise of several

Illinois natural-resource managers and biologists were invaluable to this process . In

addition to Illinois DNR colleagues, the following Illinois EPA staff provided valuable

technical input : Matt Short, Mark Joseph, Howard Essig, Gregg Good, Bob Mosher,

and Toby Frevert . Matt Short is also available to answer questions about how the

Illinois EPA macroinvertebrate information was used or about Illinois EPA's stream

monitoring program, in general . In addition to relying on Illinois-based expertise, the

Technical Support Document cites several published scientific books and papers;

copies of the relvant portions of these works can be provided as necessary .

---

Illinois EPA believes that these recommendations to the Board are scientifically

sound and defensible in light of the currently available information on the dissolved

oxygen needs of aquatic life in Illinois . Inevitably, in the future, additional information

will become available that will allow Illinois EPA to evaluate and possibly improve these

current recommendations to the Board .

Finally, I would like to thank the Board for the opportunity to provide this pre-filed

testimony and the accompanying Technical Support Document . Illinois EPA hopes this

document sheds some light on the varied dissolved oxygen needs of Illinois aquatic life

and helps the Board in its determination in this difficult proceeding . I will be happy to

answer questions from the Board at the conclusion of the presentation of testimony from

the Agency and the Department .

April 3, 2006

Illinois Environmental Protection Agency

1021 North Grand Avenue East

P.O. Box 19276

Springfield, Illinois 62794-9276

By: Roy

Smogor~

---

RECEpv

ID

BEFORE THE ILLINOIS POLLUTION CONTROL BOARD

APR 0 4 20?,5

STATE OF ILLINOIS

IN THE MATTER OF

:

Pollution Control

j

Board

PROPOSED AMENDMENTS TO

)

R 04-25

DISSOLVED OXYGEN STANDARD

)

(Rulemaking

-

Water)

35 ILL.

ADM. CODE 302

.206

)

PRE-FILED TESTIMONY OF JOEL CROSS

My name is Joel Cross and I have been employed by the Illinois Department of

Natural Resources (Illinois DNR) for 7 and one half years

. I am currently the Acting

Manager of the Watershed Protection Section within the Office of Resource

Conservation

. The Watershed Protection Section has the responsibility of coordinating

the implementation of the Illinois Wildlife Action Plan, statewide watershed-based

scientific investigations, and Geographical Information Systems for the Office of Resource

Conservation

. I was formerly employed by the Illinois Environmental Protection Agency

(Illinois EPA) for 19 years

. During my last 9 years at the Illinois EPA, I was the Manager

of the Surface Water Section and the Planning Section in the Division of Water Pollution

Control

. My duties included daily administration of several water resource programs

including surface water monitoring and assessment, watershed management initiatives,

federal non-point source programs, federal and state clean lakes programs, Total

Maximum Daily Load (TMDL) development, Geographical Information Systems, and state

water quality standards programs

. I hold a Bachelor's degree in Zoology from Southern

Illinois University at Carbondale, Illinois

.

---

My testimony in this matter will include a general overview of the Illinois DNR's

role, contribution and background history in developing the Illinois DNR and Illinois EPA

joint recommendations for dissolved oxygen water quality standards

. A jointly written

Technical Support Document supplements the testimony provided by both Illinois DNR

and Illinois EPA, and provides detailed information regarding the two agencies

recommendations

. I will refer to the Technical Support Document throughout my

testimony

.

Since the August 25, 2005 hearing, the Illinois DNR and Illinois EPA jointly

developed a coordinated position that defines two levels of numeric standards for

dissolved oxygen . A fundamental aspect of this position is that dissolved oxygen profiles

naturally vary within general use waters throughout Illinois ; therefore a single uniform

standard is not appropriate given the available science today . Illinois DNR and Illinois

EPA propose the establishment of two levels of numeric standards for dissolved oxygen

for Illinois Pollution Control Board consideration : one level is generally protective of a full

and diverse aquatic community (identified as level 2 in the Technical Support Document),

and the other level sets incrementally higher dissolved oxygen concentrations to protect

Illinois' most sensitive types of aquatic life (identified as level 1 in the Technical Support

Document)

. The Illinois DNA became involved in this proceeding because State law

provides that Illinois owns all aquatic life within our state boundaries and the Illinois DNR

is specifically responsible for regulating and managing these natural resources

.

2

---

Illinois DNR and Illinois EPA established a process for identifying a subset of

waters that warrant an incrementally higher dissolved oxygen standard

. A general

description of this process follows . Our initial effort identified fish, macroinvertebrates,

and mussels that are sensitive to dissolved oxygen . Next, Illinois DNR and Illinois EPA

investigated fish and macroinvertebrate communities to determine four biological

measures: number of sensitive fish species, proportion of individual fish that are sensitive,

number of sensitive macroinvertebrate taxa, and the proportion of individual

macroinvertebrates. that are sensitive . Because the available mussel data did not

comprise community assessments, number of sensitive species and proportion of

sensitive individuals could not be calculated . The use of mussel data will be described

later in my testimony. The third step in our process was to identify a threshold value for

each of the four biological measures listed previously

. Illinois DNR and Illinois EPA

selected a threshold value that represented the typical amount known from healthy

streams. Threshold values for each of the biological measures were determined by

calculating the median value from sampling sites that were identified as attaining the

Clean Water Act goal for aquatic life, referred to as full support . The calculation of the

median was limited to full support waters in an attempt to limit the influence of

environmental stresses, including habitat and chemicals . The fourth step of the joint

process was to identify sites that had a meaningful amount of dissolved oxygen sensitive

organisms . For each site, values for each of the four biological measures were compared

3

---

to established threshold values . Sites were selected as having a meaningful amount of

sensitive organisms if at least two of the four biological measures considered equaled or

exceeded the established threshold value .

We had sampling results from 1,110 locations available for our analysis and

found that 374 of the total sampling sites were identified as candidates for enhanced

dissolved oxygen protection . Detailed information regarding the methods and

procedures, rationale, and supporting scientific literature used in the four-step process is

provided in the Technical Support Document on pages 33 through 37 . Having identified

these 374 sampling sites in need of enhanced dissolved oxygen protection, extrapolation

of these sites to stream segments was conducted . Detailed information regarding the

methods, procedures, and rationale for the extrapolation to stream segments is provided

in the Technical Support Document on pages 38 through 44 .

As mentioned previously, the number of sensitive species and proportion of

sensitive individuals could not be calculated for mussels because of limitations in

sampling methods . However, the locations of two sensitive mussel species were overlain

on the stream segments that were identified as needing an incrementally higher dissolved

oxygen standard based on fish and macroinvertebrate analysis . In essence, the mussel

data verified the effort to identify stream segments needing protection based on the fish

and macroinvertebrate data . Additional stream segments were selected for enhanced

protection for dissolved oxygen based on the presence of these two dissolved oxygen

4

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sensitive mussels

. The list of stream segments, and the applicable dissolved oxygen

standards recommended, is described in the draft regulations provided by Toby Frevert,

Illinois EPA, pre-filed testimony attachment 1 . To facilitate the Illinois Pollution Control

Board and interested members of the public's review of identified stream segments in

need of incrementally higher dissolved oxygen standards, the Illinois DNR provided

geographically referenced data layers and associated software in compact disc format

(CD).

In addition to recommending two levels of numeric standards for dissolved

oxygen, the Illinois DNR and Illinois EPA are also recommending an additional 30-day

period as a statewide date (July 31) for protecting early life stages of fish

. This is in

contrast to the Illinois Association of Wastewater Agencies (IAWA's) recommended date

of June 30 . The Illinois DNR believes that, based on the scientific literature presented in

the Technical Support Document, an additional 30-day period is necessary to protect

early life stages of fish

. While the IAWA's proposed date of June 30 protects the majority

of spring season spawns, it neglects to include the spawning period of the summer

season spawns, and neglects to include a 30-day period for protection of post-hatch

embryonic and yolk-sac fry development

. In general, by July 31, all late spawning fish

species will have a substantial majority of their spawning and fry development into dates

when higher dissolved oxygen standards will be in effect . Even though some larvae will

5

---

be present into August, Illinois DNR fisheries managers believe the July 31 date should

not be detrimental to the overall recruitment of a year class for fish species . A full

discussion of the data supporting the selection of July 31 for protection of early life stages

is provided in the Technical Support Document on pages 23 through 31 .

The Illinois DNR and Illinois EPA developed these joint recommendations with

input from stakeholder groups . Scheduled stakeholder meetings were held on October

19, 2005 in Chicago, and November 15, 2005 in Springfield . These meetings were

attended by Illinois DNR, Illinois EPA, IAWA, Illinois Environmental Regulatory Group,

Sierra Club, Prairie Rivers Network, USEPA, and Friends of the Chicago River . The

Illinois DNR and Illinois EPA hosted additional meetings with IAWA on February 24, 2006

and with the Sierra Club and Prairie Rivers Network on March 1, 2006 . The stakeholder

process provided valuable input to the Illinois DNR and Illinois EPA in developing these

recommendations for dissolved oxygen standards .

The Illinois DNR believes these joint recommendations provided through

testimony and the Technical Support Document, significantly enhance protection for

aquatic life in comparison to the dissolved oxygen standard currently in place .

Specifically, these joint recommendations improve the current standard by identifying a

season that protects for early life stages of fishes, providing dissolved oxygen standards

more consistent with the-USEPA National Criteria Document for Dissolved Oxygen

6

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(1986), and attempting to account for the seasonal and natural variability of dissolved

oxygen .

The Illinois DNR believes the two agencies recommendations build upon and

enhances the proposed amendments to the current dissolved oxygen standards

presented by IAWA by including two levels of numeric standards for protection of

identified dissolved oxygen sensitive organisms in Illinois ; a narrative standard for waters

that naturally cannot achieve consistently higher levels of dissolved oxygen such as

wetlands, sloughs, river backwaters, and lakes and reservoirs below the thermocline ; the

addition of the 30-day chronic standards consistent with the USEPA National Criteria

Document applicable to both levels of numeric standards for dissolved oxygen ; and an

additional 30-day period necessary to protect early life stages of fish

. The Illinois DNR

does not view these joint recommendations as a lowering of dissolved oxygen standards

within some waters during certain times of the year, but rather as focusing needed

protection for most sensitive types and life stages of aquatic life where required . At the

same time, the Illinois DNR and Illinois EPA recommendations are not unnecessarily over

protective elsewhere . Therefore, the Illinois DNR further believes these joint

recommendations will allow targeting of limited State resources to the most critical waters

impacted by low dissolved oxygen concentrations

.

Staff from the Illinois DNR has testified at both the August 12, 2004 and the

August 25, 2005 hearings . Testimony for the August 25, 2005 hearing was pre-filed by

7

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Dr

. David L . Thomas, Chief of the Illinois Natural History Survey, on behalf of the Illinois

DNR. During that hearing, Mr

. Stanley Yonkauski, Illinois DNR attorney, moved to

withdraw the Illinois DNR pre-filed testimony in order to allow the development of a joint

position between Illinois DNR and Illinois EPA regarding dissolved oxygen standards (R

18-22)

. In addition, testimony was also provided by Dr

. Thomas during the August 12,

2004 hearing

. This Illinois DNR testimony, currently on the record, was provided in

response to a June 24, 2004 letter from the Lieutenant Governor's Office regarding

questions related to the dissolved oxygen issue (R 117-148, 155-158)

. Dr. Thomas'

testimony was provided in the form of a response letter to the Lieutenant Governor's

Office

. The Illinois DNR testimony of August 12, 2004 identified two issues regarding

dissolved oxygen that need to be referenced in context of the recommendations provided

by the Illinois DNR and Illinois EPA today

. Dr

. Thomas stated that "the one-day minimum

concentration of 3

.5 milligrams per liter and the seven-day mean minimum of 4

.0

milligrams per liter as not being conservative enough, and potentially endangering some

aquatic life in the state ." The 3

.5 and 4.0

milligrams per liter dissolved oxygen standards

proposed by IAWA are also, in part, contained in these joint recommendations provided

by Illinois DNR and Illinois EPA

. The Illinois DNR believes these joint recommendations

address Dr

. Thomas' concern expressed in previous Illinois DNR testimony by the

addition of two levels of numeric standards (described in the Technical Support Document

on pages 1 through 4)

. In these joint recommendations, the one-day minimum

8

---

concentration of 3 .5 milligram per liter and the seven-day mean minimum of 4 .0

milligrams per liter are applicable only to juvenile and adult life stages within level 2

waters. Applicable dissolved oxygen standards for juvenile and adult life stages in level 1

waters and for early life stages within both level 1 and 2 waters are incrementally higher

.

The second issue stated in previous Illinois DNR testimony identifies the need to maintain

a 5.0 milligrams per liter minimum at all times, which is consistent with the existing

dissolved oxygen standards . Dr. Thomas further stated "that there are species that

probably would not be protected at lower levels

." In developing these joint

recommendations, Illinois DNR and Illinois EPA investigated extensively dissolved

oxygen sensitivity to fish, macroinvertebrates, and mussels during various life stages

(described in the Technical Support Document on pages 10 through 22)

. Based on this

further scientific analysis, a 5 .0 milligram per liter acute dissolved oxygen standard is only

necessary for protection of early life stages within level 1 and 2 waters

. For juvenile and

adult life stages, protective acute dissolved oxygen standards include 4

.0 milligrams per

liter for level 1 waters and 3

.5 milligrams per liter for level 2 waters .

At this point, I would like to thank the Illinois Pollution Control Board for providing

the Illinois DNR and Illinois EPA additional time to develop a joint position in this matter

as well as all those people who fully participated in the stakeholder process

. Illinois DNR

staff making significant contributions to this process includes Scott Stuewe, Ann Holtrop,

Dr. David L . Thomas, Dr . Kevin Cummings, Jim Mick, Mike Conlin and Illinois DNR

9

---

Deputy Director Leslie Sgro . Staff from Illinois EPA spent countless hours working

directly with the Illinois DNR, including Toby Frevert, Roy Smogor, Matt Short, Mark

Joseph, Gregg Good, Bob Mosher, Stefanie Diers, Deborah Williams, and Marcia Willhite .

From the Sierra Club and Prairie Rivers Network, I'd like to thank Albert Ettinger, Cindy

Skrukrud, and Glynnis Collins . Finally, I'd like to thank IAWA, including Dennis Streicher,

Roy Harsh and Dr. James Garvey from Southern Illinois University .

In addition to myself, other Illinois DNR staff are here today and can be called

upon to address specific questions related to the Technical Support Document as

needed . Scott Stuewe, Acting Chief for the Division of Fisheries, can address questions

related to biological data and information . Ann Holtrop, Watershed Protection Section,

can address questions related to the overall process used to determine waters that

warrant a higher dissolved oxygen standard .

By Joel Cross, Acting Manager

Watershed Protection Section

Office of Resource Conservation

March 31, 2006

Joel Cross

-

Illinois Department of Natural Resources

One Natural Resources Way

Springfield, IL . 62702

---

Section 302.APPENDIX D : Stream Segments or

Enhanced Dissolved Oxygen Protection

BASIN NAME

Segment Name

Segment No .

End Points

Latitude

Longitude

COUNTY

Illinois

Aux Sable Creek

239

start 41 .3982125891033 -88.3307365155966 GRUNDY

end 41 .5221610266554

-88 .3153074461322 KENDALL

Baker Creek

123

start 41 .0993159446094 -87.833779044559

KANKAKEE

end 41 .1187483257075 -87.7916507082604 KANKAKEE

Baptist Creek

160

start 40.5172643895406 -90.9781701980636 HANCOCK

end 40.5217773790395 -90.9703232423026 HANCOCK

Barker Creek

170

start 40.4730175690641 90 .3623822544051 FULTON

end 40.4505102531327 -90.423698306895 FULTON

Battle Creek

196

start 41 .791467372356 -88.6440656199133

DEKALB

end 41 .8454435074814 -88.6580317835588 DEKALB

Big Bureau Creek

209

start 41 .2403303426443 -89.3778305139628

BUREAU

end 41 .6599418992971 -89.0880711727354 LEE

Big Rock Creek

275

start 41 .6325949399571 -88.5379727020413 KENDALL

end 41

.7542831812644 -88 .5621629654129 KANE

Blackberry Creek

271

start 41 .6432480686252 -88 .451129393594 KENDALL

end 41 .7663693677829 -88 .3855968808499 KANE

Boone Creek

284

start 42 .3430701828297 -88 .2604646456881 MCHENRY

end 42 .3116813126792

-88 .3284649937798 MCHENRY

Buck Creek

225

start 41 .4305449377211 -88 .7732713228626

LASALLE

end 41 .4508806057478

-88 .919966063547 LASALLE

403

start 40 .6513984442885 -88

.8660496976016 MCLEAN

end 40 .6757825960266 -88 .8490439132056

MCLEAN

Camp Creek

116

start 41 .0119168530464 -89.7317034650143 STARK

end 41 .0202988179758 -89.6817209218761

STARK

March 31, 2006

Page 1 of 37

---

BASIN NAME

Court Creek

122

March 31, 2006

Page 2 of 37

Segment Name

Segment No .

End Points

168

Latitude

Longitude

COUNTY

start 40

.2936155016035 -90 .7791785207262

MCDONOUGH

end 40 .3985161419285 -90

.5089903510732 MCDONOUGH

Camp Run

115

start 41

.0119168530464 -89 .7317034650143

STARK

end 41 .0575944852479

-89 .6822685234528 STARK

Cantway Slough

250

start 41

.1654521279715 -87 .6179423055771

KANKAKEE

end 41

.1204910206261 -87 .6018847740212 KANKAKEE

Cedar Creek

164

start 40

.4187924503946 -91 .0119249544251 HANCOCK

end 40 .4320989747514

-90 .9816512014458 HANCOCK

Central Ditch

17

start 40

.2466345144431 -89 .8605138200519

MASON

end 40

.259146892407 -89 .8331744969958 MASON

Clear Creek

. 70

start 40 .2358631766436

-89 .1715114085864 LOGAN

end 40.2817523596784 -89

.2105606026356 MCLEAN

Coal Creek

173

start 40 .6458316286298

-90 .2773695191768 FULTON

end 40 .6911917975894 -90

.0990104026141- FULTON

Collins Run

243

start 41

.4219631544372 -88 .3508108111242 GRUNDY

end 41 .4172036201222

-88 .3955434158999 GRUNDY

Conover Branch

184

start 39 .8376993452498 -90 .1465720267561

MORGAN

end 39

.8696939232648 -90 .1234898871846

MORGAN

Coon Creek

60

start 40 .1076562155273

-89 .0130117597621 DEWITT

end 40 .1755351290733

-88 .8857086715202 DEWITT

Coop Branch

31

end 39 .2042878811665 -90

.0972130791043 MACOUPIN

end 39 .1194481626997 -89 .9878509202749

MACOUPIN

Coopers Defeat Creek

114

start 41 .1557502062867 -89

.748162019475 STARK

end 41 .1485959333575 -89 .6944246708098

STARK

Copperas Creek

88

start 40 .4856512052475

-89 .8867983078194 FULTON

end 40 .549513691198 -89

.9011907117391 FULTON

---

BASIN NAME

March 31, 2006

Page 3 of 37

Segment Name

Segment No .

End Points

Latitude

start 40 .9184191403691

Longitude

-90 .1108008628507

COUNTY

KNOX

end 40 .9349919352638

-90 .2673514797552 KNOX

Cox Creek

177

start 40 .0231674243157 -90 .1158780774246

CASS

end 39

.9657957063914 -90 .0180644049351 CASS

Crane Creek

174

start 40 .1328714038267 -89 .9709414534257

MENARD

end 40 .2466345144431 -89 .8605138200519

MASON

Crow Creek

102

start 40.9323207251964

-89 .4264477600798 MARSHALL

end 40.9663161180876 -89

.2558617294218 MARSHALL

Deer Creek

59

start 40 .117679723776 -89

.3801215076251 LOGAN

end 40 .1915602627115

-89 .1582023776838 LOGAN

Des Plaines River

245

start 41

.3923135096469 -88 .2590124225285 GRUNDY

end 41 .4325013563553 -88

.1725611633353 WILL

Dickerson Slough

421

start 40 .3597968706068 -88 .3225685158141 CHAMPAIGN

end 40 .4568389800294 -88

.3442742579475 FORD

Drummer Creek

423

start 40 .37389931547

-88 .3480753423386

CHAMPAIGN

end 40 .479101489993

-88 .388698487066 FORD

Dry Fork

35

start 39 .1989703827155 -89

.9609795725648 MACOUPIN

end 39

.1445756951412 -89 .8876581181152

MACOUPIN

Du Page River

268

start 41 .4988385272507

-88 .2166248594859 WILL

end 41

.7019525201778 -88 .1476209409341 WILL

Eagle Creek

392

start 41 .1360015419764

-88 .8528525904771 LASALLE

end 41 .1291172842462 -88

.8664977236647 LASALLE

East Aux Sable Creek

240

start 41 .5221610266554

-88 .3153074461322 KENDALL

end 41 .6231669397764 -88

.2938779285952 KENDALL

East Branch Big Rock Creek

277

start 41

.7542830239271 -88 .5621632556731

KANE

end 41

.8161922949561 -88 .6002917634599 KANE

East Branch Copperas Creek

47

start 40 .549514632509 -89 .901189903351

FULTON

---

BASIN NAME

Segment Name

Segment No

.

End Points

Latitude

end 40 .6583152735498

Longitude

-89

.8516717710553

COUNTY

PEORIA

East Fork La Moine River

167

start 40

.3962156185095 -90 .9339386121768 HANCOCK

end 40 .4506930058171 -90 .758703782814

MCDONOUGH

East Fork Mazon River

256

start 41 .1872307009926 -88 .2731640461448

GRUNDY

end 41 .0815161304671

-88 .3093601699244 LIVINGSTON

East Fork Spoon River

110

start 41 .2158736312898 -89 .6870256054763 STARK

end 41 .2603216291895 -89 .7311074496692

BUREAU

Easterbrook Drain

410

start 40.3687232740908 -88

.5787269955356 MCLEAN

end 40

.3909243275675 -88 .5484031360558 MCLEAN

Exline Slough

252

start 41 .1187483257075 -87 .7916507082604 KANKAKEE

end 41 .3377194296138 -87 .674538578544

WILL

Fargo Run

94

start 40 .8110626738718 -89 .7625906815013 PEORIA

end 40 .7936211492847 -89 .7147157689809 PEORIA

Ferson Creek

281

start 41 .9275380999085 -88

.3177738518806 KANE

end 41 .9518312998438 -88 .3965138071814 KANE

Fitch Creek

131

start 41

.0629732121579 -89.9929808862433 KNOX

end 41 .1048465021615 -90.0171275726119 KNOX

Forked Creek

265

start 41 .312634893655 -88 .1518349597477 WILL

end 41 .4208599921871 -87 .8221168060732 WILL

Forman Creek

129

start 41 .0920068762041

-90

.1229512077171 KNOX

end 41 .061779692349 -90 .1373931430424 KNOX

Fourmile Grove Creek

232

start 41 .5880621752377 -89 .0154533767497 LASALLE

end 41 .6281572065102 -89 .0480036727754 LEE

Fox Creek

121

start 41 .2158736312898 -89 .6870256054763 STARK

end 41 .2178841576744 -89 .6378797955943 BUREAU

Fox River

270

start 41 .6177003859476 -88 .5558384703467 KENDALL

end 41 .7665361019038 -88 .3100243828453 KANE

March 31, 2006

Page 4 of37

---

BASIN NAME

Hickory Run

93

March 31, 2006

Page 5

of

37

Segment Name

Segment No .

End Points

Latitude

Longitude

COUNTY

Friends Creek

56

start 39 .9296881580789 -88 .7753341828841 MACON

end 40 .0511150621524

-88 .756810733868 MACON

Furrer Ditch

175

start 40 .259146892407 -89

.8331744807195 MASON

end 40 .256856262248

-89.8235353908665 MASON

Gooseberry Creek

138

start 41 .0815161304671

-88 .3093601699244 LIVINGSTON

end 41 .0229178273291 -88

.3433997610298 LIVINGSTON

181

start 41 .2273512263311

-88 .3737634512576 GRUNDY

end 41 .1567969821084 -88

.3954921510714 GRUNDY

Grindstone Creek

169

start 40 .2936155016035 -90.7791785207262 MCDONOUGH

end 40 .3128991202966

-90.6514786739624 MCDONOUGH

Hall Ditch

176

start 40 .214043063866 -89

.8947856138658 MASON

end 40 .1996396083582 -89 .8430392085184

MASON

Hallock Creek

101

start 40 .9330251540704

-89.523027406387 PEORIA

end 40 .9162496002415 -89

.5368879858621 PEORIA

Haw Creek

125

start 40

.8575772861862 -90.2335091570553 KNOX

end 40 .9174343445877 -90.3387634753254

KNOX

Henline Creek

401

start 40 .5867014223785 -88 .6971328093932

MCLEAN

end 40 .6247936449316 -88 .6315733675586

MCLEAN

Henry Creek

100

start 40 .932455717876

-89 .5256512687818 PEORIA

end 40 .9472322228041

-89 .5711427004422 PEORIA

Hermon Creek

126

start 40 .7818347201379 -90 .2738699961108

KNOX

end 40 .7628476930817 -90 .3372052339614

KNOX

Hickory Creek

244

start 41 .5038289458964 -88

.0990240076033 WILL

end 41 .4935392717868 -87 .8108342251738

WILL

Hickory Grove Ditch

87

start 40 .4870721779667 -89

.7285827911466 TAZEWELL

end 40 .4136575635669 -89 .7349507058786

MASON

---

BASIN NAME

Segment Name

Segment No .

End Points

Latitude

start 40

.8217198390551

Longitude

-89 .7449749384213

COUNTY

PEORIA

end 40 .8581447502391

-89 .7622130910013 PEORIA

Hillsbury Slough

416

start 40.3453953438371

-88 .3035309970523

CHAMPAIGN

end 40.3928682378873

-88 .2265028280313 CHAMPAIGN

Hodges Creek

34

start 39 .2630316914552 -90

.1858200381692 GREENE

end 39 .2801974743086 -90 .1528766403572

GREENE

Hurricane Creek

44

start 39

.449376470161 -90 .5400508230403

GREENE

end 39 .4781872332274

-90 .4508986197452 GREENE

Illinois River

236

start 41

.3255740245957 -88

.9910230492306 LASALLE

end 41 .3986780470527

-88 .2686499362959 GRUNDY

Indian Creek

120

start 40

.988610901184 -89 .8221496834014

STARK

end 41 .2003389912185 -89

.9349435285117 HENRY

182

start 39

.8785447641605 -90.3782080959549 CASS

end 39 .8234731084942 -90.103743390331

MORGAN

224

start 41 .7480730242898 -88 .8741562924388

DEKALB

end 41

.7083887626958 -88 .9437996894049

LEE

226

start 41 .4400734113231 -88 .7627018786422

LASALLE

end 41 .7377348577433 -88 .8557728844589

DEKALB

396

start 40 .7701181840118 -88 .4858209632899

LIVINGSTON

end 40 .6469799222669

-88 .4812665778082

LIVINGSTON

Iroquois River

253

start 41 .0739205590002 -87

.8152251833303 KANKAKEE

end 40.9614905075375 -87

.8149010739444 IROQUOIS

447

start 40.7817769095357

-87 .7532807121524

IROQUOIS

end 40.8174648935578

-87 .5342555764515 IROQUOIS

Jack Creek

109

start 41

.1283656948767 -89 .7699479168181

STARK

end 41 .150467875432

-89 .8374616586589 STARK

Jackson Creek

246

start 41 .4325013563553 -88 .1725611633353

WILL

end 41

.4638503957577 -87 .9160301224816

WILL

Joes Creek

33

start 39 .2801974743086

-90 .1528766403572 GREENE

end 39 .3757180969001 -90.0772968234561

MACOUPIN

March 31, 2006

Page 6 of37

---

BASIN NAME

Segment Name

Segment No .

End Points

Johnny Run

258

Latitude

Longitude

COUNTY

start 41 .2826709079541 -88 .3633805819326

GRUNDY

end 41

.0807507198308 -88 .5801638050665 LIVINGSTON

Jordan Creek

266

start 41 .3044458242397

-88 .1279087273328 WILL

end 41 .3077177643453 -88 .1188984685001

WILL

Judd Creek

106

start 41

.089645284216 -89 .1847595119809

MARSHALL

end 41 .0429807674449 -89.1339049242164

MARSHALL

Kankakee River

248

start 41 .3923135096469 -88 .2590124225285

GRUNDY

end 41 .1660752568715

-87 .526360971907

KANKAKEE

Kickapoo Creek

57

start 39.9932216924528

-88 .8083252484687 MACON

end 39.9987405799186

-88 .8205170598483 MACON

65

start 40.1286520491088

-89 .4532728967436 LOGAN

end 40 .4376592310728 -88

.8667409562596 MCLEAN

92

start 40 .6548826785105

-89 .6134608723157 TAZEWELL

end 40 .9170471944911 -89 .6577393908301

PEORIA

Kings Mill Creek

83

start 40

.4558745105979 -89 .1642930044364

MCLEAN

end 40 .509184986927 -89

.0937965002854 MCLEAN

La Harpe Creek

159

start 40

.4678428297867 -91 .0424167497572

HANCOCK

end 40 .5172643895406 -90.9781701980636

HANCOCK

La Moine River

158

start 40 .3320849972693

-90.8997234923388 MCDONOUGH

end 40 .5923258750258

-91 .0177293656635 HANCOCK

Lake Fork

61

start 40 .0837107988142 -89.3969397975165

LOGAN

end 39

.9367293000733 -89 .2343282851812

LOGAN

Langan Creek

254

start 40 .9614905075375 -87.8149010739444

IROQUOIS

end 40 .9432018898477 -88 .0465558527168

IROQUOIS

Lime Creek

214

start 41 .4515003790233

-89 .5271752648714 BUREAU

end 41 .4951141474998 -89

.456554884734 BUREAU

Little Indian Creek

183

start 39 .8355964564522

-90 .1231971747256 MORGAN

March 31, 2006

Page 7 of 37

---

BASIN NAME

Madden Creek

413

March 31, 2006

Page 8 of 37

Segment Name

Segment No .

End Points

Latitude

Longitude

COUNTY

end 39 .8658175367056 -90 .0423591294145

MORGAN

227

start 41 .5091299863247 -88 .7725444056074

LASALLE

end 41 .749433980972 -88 .8141442269697

DEKALB

Little Kickapoo Creek

67

start 40 .3336625070255 -88 .9736094275975

MCLEAN

end 40 .394785197415 -88 .9473142490326

MCLEAN

Little Mackinaw River

82

start 40 .4423190352496

-89 .4617848276975

TAZEWELL

end 40 .4481261917524

-89 .4329939054056 TAZEWELL

Little Rock Creek

274

start 41 .6345548769785 -88

.5384723455853 KENDALL

end 41

.7895688619816 -88 .6981590581244

DEKALB

Little Sandy Creek

107

start 41 .0912632622075

-89 .2247552498617 MARSHALL

end 41 .125352501365 -89 .1758716886846

PUTNAM

Little Senachwine Creek

99

start 40.9533145540839 -89

.5292433956921 PEORIA

end 41

.0084439145565 -89 .5499765139822

MARSHALL

Little Vermilion River

233

start 41 .3237602050852 -89

.0811945323001 LASALLE

end 41 .5760289435671

-89 .0829047126545

LASALLE

Lone Tree Creek

418

start 40 .3750682121535 -88

.3819688457729 CHAMPAIGN

end 40

.3145980401842 -88 .4738655755984

MCLEAN

Long Creek

163

start 40

.4466427913955 -91 .0499607552846

HANCOCK

end 40 .4297652043359

-91 .1507109600489 HANCOCK

Long Point Creek

68

start 40 .2755311999445

-89 .0786438507327 DEWITT

end 40 .2549604211821 -88

.9826285651361 DEWITT

394

start 41 .038177645276 -88

.7908409579793 •LIVINGSTON

end 41 .0018214714974 -88

.8534349418926 LIVINGSTON

Mackinaw River

397

start 40.5796794158534

-89 .2813445945626

TAZEWELL

end 40 .5649627479232

-88 .478822725546 MCLEAN

Macoupin Creek

32

start 39

.1989703827155 -89 .9609795725648

MACOUPIN

start 39 .2121253451487

-90 .2312084410337 JERSEY

---

BASIN NAME

Segment Name

Segment No .

End Points

Latitude

start 40 .0943580002069

Longitude

-88 .5400649488702

COUNTY

PLATT

end 40.2109635906658 -88.4943738561926 MATT

Masters Creek

220

start 41 .4976109383336

-89.4125473607076 BUREAU

end 41 .5439000049343 -89.421988392756

BUREAU

Masters Fork

217

start 41 .4531024225454 -89.4290492805799 BUREAU

end 41 .5702310455498 -89.3821188149649

BUREAU

Mazon River

257

start 41 .3086768327676

-88 .3389845675056 GRUNDY

end 41 .1872307009926 -88 .2731640461448 GRUNDY

Mendota Creek

234

start 41 .5281666288805 -89.1041764154672 LASALLE

end 41 .5282367334928 -89.1224368860589

LASALLE

Middle Branch of Copperas Creek

90

start 40.549514632509 -89.901189903351

FULTON

end 40.5980896362772 -89 .9368482699851

FULTON

Middle Creek

165

start 40.3957329294144

-90.9741776721721 HANCOCK

end 40.3888894030526 -91

.0072502737366 HANCOCK

Mill Creek

494

start 41 .8213649020421

-88 .3222376599138 KANE

end 41 .9231053361497 -88 .4419826012614

KANE

Mole Creek

390

start 41 .0193910577853 -88 .8019375580673

LIVINGSTON

end 40 .9109452909954 -88 .9263176124884 LIVINGSTON

Morgan Creek

272

start 41 .6481172046369 -88 .4151168308869

KENDALL

end 41 .6530911245692 -88.3631669287476

KENDALL

Mud Creek

449

start 40 .637099482441 -87.5885960450541 IROQUOIS

end 40

.6100172186722 -87.5261312404789 IROQUOIS

Mud Run

117

start 41 .0092425694765 -89.7790957399812

STARK

end 40 .9876287937001 -89.6785472090663 STARK

Murray Slough

259

start 41 .2428845425989 -88.3615508333781

GRUNDY

end 41 .054741775769 -88.5825975362008

LIVINGSTON

Nettle Creek

237

start 41 .3559056532822

-88 .4326806825019 GRUNDY

March 31, 2006

Page 9 of37

---

BASIN NAME

Segment Name

Segment No .

End Points

Latitude

end 41 .3989525138118

Longitude

-88 .5519708865374

COUNTY

GRUNDY

Nippersink Creek

285

start 42 .403479031235 -88 .1904263022916

LAKE

end 42

.408321560969 -88 .341299199739

MCHENRY

289

start 42 .3885864249526 -88 .3641081665149

MCHENRY

end 42

.4692291197455 -88 .4764236384547 MCHENRY

North Branch Crow Creek

103

start 40 .9663161180876

-89 .2558617294218 MARSHALL

end 41 .0005549578781 -89 .1943061363378

MARSHALL

North Branch Nippersink Creek

286

start 42

.4376632559979 -88 .2872504317539 MCHENRY

end 42 .4945866793007

-88 .3294075716268 MCHENRY

North Creek

119

start 40.9486975483619 -89 .7633680090807

PEORIA

end 40.9421533616142 -89 .7281078793964

PEORIA

North Fork Lake Fork

62

start 39.9367293000733

-89 .2343282851812 LOGAN

end 40 .0523211989442 -89

.0999303242614 DEWITT

North Fork Salt Creek

71

start 40 .2675598120912

-88 .7867164044023 DEWITT

end 40 .3620541452609

-88 .7204600533309 MCLEAN

Otter Creek

171

start 40 .2161621556914 -90 .164317977292

FULTON

end 40

.3182822717998 -90 .3860609925548 FULTON

279

start 41

.9619670384069 -88 .3574449893747 KANE

end 41 .9903303640688

-88 .3568570687618 KANE

393

start 41

.1611802253124 -88 .8310854379729 LASALLE

end 41

.1541734588026 -88 .7148550047115

LASALLE

Panther Creek

178

start 40

.0231674243157 -90 .1158780774246 CASS

end 39 .9411115612757

-90 .0607356525317 ASS

405

start 40 .6607941387838

-89 .196034413193 WOODFORD

end 40 .8483817762616 -89

.0003562591212 WOODFORD

Paw Paw Run

231

start 41

.6177945875792 -88 .8847204360202 LASALLE

end 41 .6630271288718

-88 .9144064528509 DEKALB

Pike Creek

216

start 41

.5121637096396 -89 .3366888940457 BUREAU

end 41 .5707857354427

-89 .2125163729316 BUREAU

March

31, 2006

Page 10 of 37

---

BASIN NAME

Segment Name

Segment No.

End Points

Latitude

Longitude

COUNTY

388

start 40 .8655185113965 -88 .7090974772719 LIVINGSTON

end 40 .7989226101833 -88 .7756316859923 LIVINGSTON

Pond Creek

212

start 41 .3494925800361 -89 .5685244208084 BUREAU

end 41 .3541221673156 -89

.6001721270724 BUREAU

Poplar Creek

493

start 42 .0127893042098 -88.2799278350546 KANE

end 42 .0604682884044 -88 .151517184544 COOK

Prairie Creek

69

start 40 .2688606116755 -89.1209318708141 DEWITT

end 40 .3183618654781 -89.1150133167993 MCLEAN

79

start 40 .1610672222447 -89.6159697428554

MASON

end 40.3105388304102 -89.4819788351989 LOGAN

264

start 41 .3410818305214 -88.1859963163497 WILL

end 41.4048430210988 -87.9636949110551

WILL

391

start 41.0691920852358

-88 .8106812576958 LIVINGSTON

end 41.0162806406811 -89.0122375626521 LASALLE

Prairie Creek Ditch

81

start 40.242940205103 -89 .5831738921535 LOGAN

end

40.268603376062

-89 .5902703680441 LOGAN

Prince Run

118

start 40.9953442805941 -89 .7634490486344 STARK

end 40.9486975483619 -89

.7633680090807 PEORIA

Rob Roy Creek

495

start 41 .6340658591268 -88.530902327864 KENDALL

end 41 .7208669225124 -88.4449822691918 KENDALL

Rock Creek

180

start 39.9533586794244 -89.7717217346798 MENARD

end 39.9192042890665 -89.881417605895 MENARD

251

start 41 .2029705333006

-87.9860450524621 KANKAKEE

end 41 .2416733683013 -87.9199539652218

KANKAKEE

Rocky Run

221

start 41 .2966432755716 -89.5031050607007 BUREAU

end 41 .2892114895079 -89 .5271301009319 BUREAU

Rooks Creek

386

start 40 .9620056243899 -88 .737743684525 LIVINGSTON

end 40 .7615433072922 -88 .6752675977812 LIVINGSTON

Salt Creek

58

March 3I, 2006

Page 11 of 37

---

BASIN NAME

Segment Name

Segment No .

End Points

Latitude

start 40 .1286520491088

Longitude

-89 .4532728967436

COUNTY

LOGAN

end 40 .1404369482862 -88 .8817439726269 DEWITT

409

start 40

.2793653821328 -88 .6019348286105 DEWITT

end 40 .3687232740908 -88 .5787269955356 MCLEAN

Sandy Creek

105

start 41 .1083947129797 -89 .3471796913242 PUTNAM

end 41 .0855613697751 -89 .0792291942694

MARSHALL

Sangamon River

408

start 40 .0056362283258 -88

.6286241506431 PIATT

end 40 .4223231153926 -88 .67328493366 MCLEAN

Senachwine Creek

96

start 40 .929825860388

-89 .4632928486271 PEORIA

end 41 .0900318754938 -89 .5885134178247

MARSHALL

Short Creek

162

start 40 .4611057719393 -91 .0582083107674 HANCOCK

end 40 .4682735975769 -91 .0704506789577 HANCOCK

Short Point Creek

389

start 40

.9883827214271 -88 .7830008925065 LIVINGSTON

end 40 .8951301673701 -88 .8749997260932

LIVINGSTON

Silver Creek

111

start 41 .2185762138697

-89 .6793069447094 STARK

end 41 .2431713087936 -89

.6494927441058 BUREAU

South Branch Crow Creek

104

start 40.9663161180876 -89 .2558617294218 MARSHALL

end 40.9410075148431 -89 .1948285503851 MARSHALL

South Branch Forked Creek

267

start 41 .2631372965881 -88 .0315238211836 WILL

end 41 .292604367733 -87 .9621751169561 KANKAKEE

South Fork Lake Fork

63

start 39 .9367293000733 -89 .2343282851812 LOGAN

end 39 .9674631778105 -89 .0884701339793 MACON

South Fork Vermilion River

395

start 40 .7701181840118 -88 .4858209632899 LIVINGSTON

end 40 .7234241258087 -88 .355790853647 LIVINGSTON

Spoon River

3

start 40 .883272448156 -90 .0994555125119 KNOX

end 41 .2158736312898 -89 .6870256054763 STARK

Spring Creek

161

start 40 .5838583294631

-91 .0397056763892 HANCOCK

end 40 .595079516268 -91 .0572149428165 HANCOCK

March 31, 2006

Page 12 of 37

---

BASIN NAME

Unnamed Tributary

230

March 31, 2006

Page 13 of 37

Segment Name

Segment No

.

End Points

Latitude

Longitude

COUNTY

166

start 40

.4506930058171 -90 .758703782814 MCDONOUGH

end 40 .5047702003096 -90 .7202911238868

MCDONOUGH

223

start 41 .3114342012759 -89

.1969933188526 BUREAU

end 41

.5341774964794 -89 .1599030581214 LASALLE

Stevens Creek

55

start 39

.833172054334 -89 .008501860042 MACON

end 39 .8725126750168 -88 .9902570309468

MACON

Sugar Creek

76

start 40 .1505909949415 -89 .6335239996087

MENARD

end 40 .3515916252906

-89 .1626966142058 MCLEAN

124

start 40

.9273148603695 -90 .1168866799652

KNOX

end 40 .9407150872189 -90

.126984172004 KNOX

448

start 40 .7817769095357

-87 .7532807121524

IROQUOIS

end 40 .650106664471

-87 .5259225515566 IROQUOIS

Sutphens Run

228

start 41 .5813276727649

-88 .9196815109252 LASALLE

end 41 .5940767755281 -89 .0434408697488

LASALLE

Swab Run

127

start 40.8043825531334

-90 .0417502151246 KNOX

end 40 .8089204046364 -89 .9959890937906

KNOX

Tenmile Creek

64

start 40 .1166122038468 -89 .0605809659338 DEWITT

end 40 .1573804135529 -88

.9870426654374 DEWITT

Timber Creek

77

start 40 .3499903738803 -89 .1633832938062

MCLEAN

end 40 .3824906556377

-89 .0653243216353 MCLEAN

Trim Creek

249

start 41 .1679695055755 -87 .6275919071884

KANKAKEE

end 41 .3235679470585 -87 .6273348723156 WILL

Turkey Creek

172

start 40 .5312633037562 -90

.2784734138591 FULTON

end 40 .6100168551688 -90 .1683886238592

FULTON

402

start 40 .6346912128201 -88 .8256051903746

MCLEAN

end 40

.6636296144043 -88 .7848217949076 MCLEAN

Tyler Creek

283

start 42 .057069434075 -88

.2869209701875 KANE

end 42 .0886074301339 -88 .3939734393445

KANE

---

BASIN NAME

Segment Name

Segment No .

End Points

Latitude

start 41 .6008353940091

Longitude

-88

.9239309686064

COUNTY

LASALLE

end 41

.6393800996109 -88 .95237726256 LEE

406

start 40 .8483817762616 -89 .0003562591212

WOODFORD

end 40

.8446321845668 -88 .9879480330159 WOODFORD

Unnamed Tributary of Big Bureau Creek

222

start 41 .2923889187328

-89 .4849627504116 BUREAU

end 41

.2746773653832 -89 .4967232161933 BUREAU

Unnamed Tributary of Coopers Defeat Creek

113

start 41

.1485959333575 -89 .6944246708098 STARK

end 41 .1432423938169 -89

.6549152326434 STARK

Unnamed Tributary of Dickerson Slough

422

start 40 .4068214049304 -88

.3388760698826 FORD

end 40.4286849455119

-88 .3118606581845

FORD

Unnamed Tributary of Drummer Creek

425

start 40.430183509928

-88 .3944923485681 FORD

end 40.4228198536222 -88

.4420280012069 FORD

Unnamed Tributary of East Branch of Copperas Creek

89

start 40.59257130763

-89 .8385498955685

PEORIA

start 40.59257130763

-89

.8385498955685 PEORIA

Unnamed Tributary of East Fork of Spoon River

112

start 41 .1911731339471 -89 .6948993736812

STARK

end 41

.1958777466981 -89 .6635132189552 STARK

Unnamed Tributary ofIndian Creek

185

start 39 .8195431621523 -90

.231206997871 MORGAN

end 39

.7997709298014 -90 .2444898890822

MORGAN

229

start 41 .5989641246871 -88

.913295513256 LASALLE

end 41

.6212302072922 -88

.9971274321449 LASALLE

Unnamed Tributary of Jackson Creek

247

start 41 .4328713295604 -88 .0777949404827

WILL

end 41 .4181859202087

-88 .0389954976751 WILL

Unnamed Tributary of Johnny Run

261

start 41 .1315090714299 -88

.5704499691513 GRUNDY

end 41 .1211734141418 -88 .5813177275807

GRUNDY

Unnamed Tributary ofKickapoo Creek

66

start 40 .4376592310728 -88

.8667409562596 MCLEAN

end 40 .4499435649154 -88 .7941853627565

MCLEAN

95

start 40 .843847234267 -89

.6598940056171 PEORIA

end 40 .8376970553513 -89 .655765678658

PEORIA

March 31, 2006

Page 14 of 37

---

BASIN NAME

March 31, 2006

Page 1 5 of37

Segment Name

Segment No .

End Points

Latitude

Longitude

COUNTY

Unnamed Tributary ofLone Tree Creek

417

start 40 .3145980401842 -88 .4738655755984

MCLEAN

end 40 .3084681821929 -88 .4721825603404 MCLEAN

419

start 40 .3200878690807 -88 .4758169784284

MCLEAN

end 40 .3246054213609 -88 .502979969789 MCLEAN

420

start 40 .3555955038811 -88 .4486860730234

CHAMPAIGN

end 40 .3553786361326

-88.4890287857383 MCLEAN

Unnamed Tributary ofMackinaw River

398

start 40 .5649627479232 -88

.478822725546 MCLEAN

end 40 .4956570103387 -88 .5106552787079

MCLEAN

399

start 40 .558742486097 -88

.5447290418444 MCLEAN

end 40 .532461937187 -88 .5550436512012

MCLEAN

400

start 40 .5536214693649

-88 .6155771894066 MCLEAN

end 40 .5386135050112 -88 .6150100834316

MCLEAN

Unnamed Tributary ofMasters Creek

219

start 41 .5407471962821 -89 .4154110620948 BUREAU

end 41 .5452528261938 -89 .4136798690744

BUREAU

Unnamed Tributary

ofMasters Fork

218

start 41 .510430587881

-89 .3900507138719

BUREAU

end

41

.6181398940954

-89 .2965280984998 LEE

Unnamed Tributary ofNettle Creek

238

start 41 .4088814108094 -88 .5216683950888

GRUNDY

end 41 .4186133676397

-88 .5339604493093 GRUNDY

Unnamed Tributary ofNippersink Creek

255

start 42 .4692291197455 -88

.4764236384547 MCHENRY

end 42 .4695432978934 -88 .5110499918451

MCHENRY

288

start 42.4176539163554 -88 .3444740410368 MCHENRY

end

42 .4179067763647 -88 .3502762821058 MCHENRY

290

start 42.3969278131381 -88 .4109784072142 MCHENRY

end 42.3875994074602 -88 .4491666706176

MCHENRY

Unnamed Tributary of North Fork of Salt Creek

72

start 40.3598944577027 -88 .7302360564635

MCLEAN

end 40.3811246400667

-88 .7481607936989

MCLEAN

73

start 40.3620541452609 -88 .7204600533309

MCLEAN

end 40.3690272117515

-88 .6961244618476 MCLEAN

75

start 40.2987649882463

-88 .7603546124853 MCLEAN

end 40.3051172967471 -88 .7525145171727

MCLEAN

Unnamed Tributary of Panther Creek

---

BASIN NAME

March 31, 2006

Page 1 6 of37

Segment Name

Segment No .

End Points

Latitude

Longitude

COUNTY

179

start 39

.9411115612757 -90 .0607356525317 CASS

end 39 .9350887523192

-90 .047762075576 CASS

Unnamed Tributary of Pond Creek

211

start

41 .3541221673156 -89 .6001721270724

BUREAU

end 41 .3352313411595

-89 .5875580793812 BUREAU

Unnamed Tributary of Prairie Creek

78

start 40 .2086608970772 -89 .6103029312127

MASON

end

40 .2239585519289 -89 .638616348402

MASON

80

start 40 .3105388304102 -89

.4819788351989 LOGAN

end 40

.3114851545122 -89.4410508250634

LOGAN

Unnamed Tributary of Rooks Creek

387

start 40 .7615433072922

-88 .6752675977812 LIVINGSTON

end 40 .7348742139519 -88.6985073106457

MCLEAN

Unnamed Tributary of Salt Creek

412

start 40 .3090617343957 -88 .6002511568763

MCLEAN

end

40 .3165662374132 -88 .6011454430269

MCLEAN

Unnamed Tributary of Sandy Creek

108

start 41 .0816545465891 -89 .0921996326175

MARSHALL

end 41 .0690044849354 -89 .0872784559417

MARSHALL

Unnamed Tributary of Sangamon River

414

start 40 .2187198550443

-88 .3726776422252 CHAMPAIGN

end 40 .207759150969 -88 .3556670563292

CHAMPAIGN

415

start 40 .2618571248343 -88

.3804307110291 CHAMPAIGN

end 40 .2604569179243 -88 .4076966986332

CHAMPAIGN

Unnamed Tributary of Senachwine Creek

97

start 41 .0729094906046

-89.5194162172506 MARSHALL

end 41 .1005615839111 -89.5247542292286

MARSHALL

98

start 41 .0008160428297 -89.5071527441621

MARSHALL

end 41 .0407981005047 -89 .5430844273656

MARSHALL

Unnamed Tributary of Walnut Creek

130

start 41 .0811500581416

-90.0632765005186 KNOX

end 41 .0847653353348 -90.0680765817376

KNOX

132

start 41 .0602585608831 -89.9869046205873

KNOX

end 41

.0721601609241 -89 .9735120056073

STARK

133

start 41 .0262443553352 -89.9515238620326

STARK

end 41 .0340788244836

-89 .924721175772

STARK

Unnamed Tributary of West Bureau Creek

215

start 41 .4606455355906 -89.5251264675481

BUREAU

---

BASIN NAME

411

March 31, 2006

Page 17 of 37

Segment Name

Segment No .

End Points

Latitude

end 41 .4958522845312

Longitude

-89 .5472802493082

COUNTY

BUREAU

Unnamed Tributary of West Fork Sugar Creek

85

start 40 .3381506914873 -89 .2954898975603

TAZEWELL

end 40 .3660114221746 -89 .2448498120596 MCLEAN

86

start 40.3105145326502 -89 .3291625265707

LOGAN

end 40.3299182729366 -89 .3779530037535 TAZEWELL

Valley Run

241

start 41

.4172036201222 -88 .3955434158999 GRUNDY

end 41 .5039796750174 -88 .5041976708714

KENDALL

Vermilion Creek

235

start 41 .4768291322914 -89 .0571044195371 LASALLE

end 41 .5338604103044

-89 .0473804190906 LASALLE

Vermilion River

385

start 41

.3202746199326 -89 .067686548398 LASALLE

end 40.8817674383366 -88 .6504671722722

LIVINGSTON

Walnut Creek

128

start 40.9597510841493 -89 .9769499175619 PEORIA

end 41 .12653217294

-90 .2059192933585 KNOX

404

start 40.6253040823561 -89 .239009045057 WOODFORD

end 40.7670065190601 -89 .3054156233977

WOODFORD

Waubonsie Creek

273

start 41 .6864691774875 -88 .3543291766866 KENDALL

end 41 .727653072306 -88

.2817226140407 KANE

Waupecan Creek

262

start 41 .3345412028515 -88 .4648617458928 GRUNDY

end 41 .1880870688571

-88 .5889392759762 LASALLE

Welch Creek

278

start 41 .7390229211455 -88 .5133300234389 KANE

end 41 .7542282081589 -88 .4963865174814 KANE

West Branch Big Rock Creek

276

start 41 .7542830239271 -88 .5621632556731 KANE

end 41 .791467372356 -88 .6440656199133 DEKALB

West Branch Drummer Creek

424

start 40 .4348513301682 -88

.3934764271309 FORD

end 40 .4490333768479 -88 .4056995893214

FORD

West Branch Du Page River

269

start 41 .7019525201778 -88

.1476209409341 WILL

end 41 .7799425869794 -88 .1712650214772 DUPAGE

West Branch of Easterbrook Drain

---

BASIN NAME

Segment Name

Segment No .

End Points

Latitude

start 40.3633709579832

Longitude

-88 .5816306009141

COUNTY

MCLEAN

end 40

.3762064931712 -88 .5843753634505 MCLEAN

West Branch of Horse Creek

263

start 41 .2492485076225 -88 .1312055809841

WILL

end 41 .0019131557324 -88 .1364114459172

KANKAKEE

West Branch ofLamarsh Creek

91

start 40 .5615978513207 -89

.6991824445749 PEORIA

end 40 .640281675188 -89 .7388615248892

PEORIA

West Branch Panther Creek

407

start 40 .7528335084236

-89 .1030067348099

WOODFORD

end 40 .7954060105963

-89 .1900600098668 WOODFORD

West Bureau Creek

213

start 41 .3209910742583 -89

.5195916727401 BUREAU

end 41

.478267808168 -89 .5152211006131 BUREAU

West Fork Mazon River

260

start 41

.2530670781541 -88 .3508667933585 GRUNDY

end 41 .0302502359071 -88

.5226194555857 LIVINGSTON

West Fork Salt Creek

74

start 40.317360196629 -88.7559599297755

MCLEAN

end 40.3372561693307

-88 .8039670869984 MCLEAN

West Fork Sugar Creek

84

start 40.2844404292499 -89

.332075650855 LOGAN

end 40.4558745105979

-89 .1642930044364

MCLEAN

Wolf Creek

497

start 41 .1540042913791

-88 .8612912917747 LASALLE

end 41

.1611802253124 -88

.8310854379729 LASALLE

Kaskaskia

Bearcat Creek

37

start 39.0121682814832 -89.5317265036074

BOND

end 39 .0568357269204 -89.4889786056249

MONTGOMERY

Becks Creek

45

start 39 .1565938305703

-88 .9491156388975 FAYE'ITE

end 39 .3602481794208 -89 .0227919838743

SHELBY

Brush Creek

39

start 39

.1385354787129 -89 .5805305687638

MONTGOMERY

end 39 .1539913389194 -89

.561368040102 MONTGOMERY

Cress Creek

41

start 39

.1652709439739 -89 .5012992382647

MONTGOMERY

end 39 .1962551507602

-89 .5131844155481

MONTGOMERY

Dry Fork

March 31, 2006

Page 18 of 37

---

BASIN NAME

Section Creek

49

March 31, 2006

Page 19 of 37

Segment Name

Segment No .

End Points

Latitude

Longitude

COUNTY

43

start 39 .036113738887 -89 .2488135289512 FAYETTE

end 39 .1033131262537 -89 .2984242244004 MONTGOMERY

East Fork Shoal Creek

23

start 38 .8310032253066 -89 .4990300331039 BOND

end 38 .9226451880864 -89.4117554251748

BOND

Gerhardt Creek

27

start 38 .3445550793694 -90.0600653224456 ST . CLAIR

end 38

.367857922464 -90.0997565611344 MONROE

Hurricane Creek

42

start 38 .9180334233238 -89 .2472989134191 FAYETTE

end 39 .2167946546678 -89 .2767284135051 MONTGOMERY

Loop Creek

21

start 38 .4738791704891 -89 .8286629587977 ST . CLAIR

end 38 .4996759642082

-89 .9058988238884 ST . CLAIR

Middle Fork Shoal Creek

40

start 39 .0848984732588 -89 .5438724131899 MONTGOMERY

end 39 .1868483992515 -89 .4798528829252 MONTGOMERY

Mitchell Creek

48

start 39 .1565938305703 -88

.9491156388975 FAYETTE

end 39 .3191569074355 -88 .9291931738519 SHELBY

Mud Creek

51

start 39 .4078984061571 -88 .8964126852371

SHELBY

end 39 .4786612118046 -88 .9523280946578 SHELBY

Ninemile Creek

30

start 38.0441291788376 -89 .9112042263573 RANDOLPH

end 38.0507383485977 -89.8278402421236 RANDOLPH

Opossum Creek

46

start 39.2718719283603 -89

.006345202583 SHELBY

end 39.2833737967471 -89.0555186821259 SHELBY

Prairie du Long Creek

24

start 38 .2583950460692 -89 .9674114204896 MONROE

end 38 .3425597902873

-90 .0517323138269 ST .CLAIR

Robinson Creek

50

start 39 .3519556417502 -88

.8434641389225 SHELBY

end 39 .5215530679793 -88 .8331635597113 SHELBY

Rockhouse Creek

25

start 38 .279441694169 -90 .0367398173562 MONROE

end 38 .2999005789932 -90 .1039357731424 MONROE

---

Burton Creek

192

March 31, 2006

Page20of37

BASIN NAME

Segment Name

Segment No .

End Points

Latitude

Longitude

COUNTY

start 39 .1835497280833 -88 .9455894742885 FAYETTE

end 39

.1959160048126 -88 .961892707007 FAYETTE

Shoal Creek

22

start 38 .4831106563982 -89 .5775456200079

WASHINGTON

end 38

.5557239981111 -89 .4968640710432 CLINTON

36

start 38 .8310032008922 -89 .4990300493802 BOND

end 39 .0848755752581

-89 .5439018081354 MONTGOMERY

Silver Creek

20

start 38 .3369025707936 -89

.8753691916515 ST . CLAIR

end 38 .5568068204478 -89 .8305698867169 ST

. CLAIR

Stringtown Branch

53

start 39.7138824796477

-88 .6677549810426 MOULTRIE

end 39.7363136714592 -88

.6944718913546 MOULTRIE

Unnamed Tributary of Gerhardt Creek

26

start 38 .367857922464 -90 .0997565611344

MONROE

end 38

.3742880966457 -90 .1107074126403 MONROE

Unnamed Tributary of Okaw River

54

start 39 .734248747064

-88 .6620801587617 MOULTRIE

end 39 .80990395294

-88 .6969360645412

PLATT

Walters Creek

28

start 38

.3425597902873 -90 .0517323138269 ST. CLAIR

end 38 .3445550793694 -90 .0600653224456

ST. CLAIR

West Fork Shoal Creek

38

start 39

.1385354787129 -89 .5805305687638

MONTGOMERY

end 39 .1877434015581

-89 .6041666305308 MONTGOMERY

West Okaw River

52

start 39

.6158126349278 -88 .7105522558061

MOULTRIE

end 39

.7564321977535 -88 .630211952428

MOULTRIE

Mississippi River

Apple River

372

start 42 .3210892387922 -90 .2520915343109

30 DAVIESS

end 42

.5078007598632 -90 .1320538371008

JO DAVIESS

Bear Creek

199

start 40 .1421908412793 -91 .322057103417

ADAMS

end 40

.3507607406412 -91 .1831593883194

HANCOCK

Bigneck Creek

205

start 40 .1189668648562 -91

.2247381726013 ADAMS

end 40 .118891177483 -91 .1409739765636

ADAMS

---

BASIN NAME

Ellison Creek

March 31, 2006

Page 21 of 37

Segment Name

Segment No .

End Points

Latitude

start 39 .8643091712617

Longitude

-91 .343323220756

COUNTY

ADAMS

end 39 .92393403238

-91

.2381482737218 ADAMS

Camp Creek

140

start 41 .2607621817314 -90 .514303172809

MERCER

end 41

.3114464274682 -90 .2476056448033 HENRY

142

start 41 .2202380211465 -90.895164796358

MERCER

end 41 .2787933006746

-90.6950345992843 MERCER

Carroll Creek

349

start 42 .1027782814517 -90.0265311556732

CARROLL

end 42 .0906369943302 -89.8985337135691 CARROLL

Clear Creek

6

start 37

.4821139304798 -89.377768200259 UNION

end 37 .5377402977406 -89.331689550578

UNION

381

start 42 .4468385101031 -90.0472460146999.

JO DAVIESS

end 42 .4780763391708

-90.035127804618 JO DAVIESS

Coon Creek

376

start 42.4035528739642 -90.1272819897867

JO DAVIESS

end 42.4347098804951

-90.1169407822902 JO DAVIESS

Copperas Creek

148

start 41 .3717279574558

-90.901871458269 ROCK ISLAND

end 41 .3616090539824 -90.7468725613692

ROCK ISLAND

Deep Run

155

start 40

.7779166934519 -90 .9639489255706 HENDERSON

end 40.794076798068 -90 .9474772904134

HENDERSON

DLvson Creek

154

start 40.7684181600505 -90 .9376123103323

HENDERSON

end 40.7650613473293

-90 .9262679175808 HENDERSON

Dutch Creek

4

start 37 .4593003249666 -89 .3688365937935 UNION

end 37.4147572383786

-89 .2744790735331 UNION

East Fork Galena River

383

start 42 .450241615252 -90 .3876497193745

JO DAVIESS

end 42.4876693698893

-90 .286894403861 JODAVIESS

Edwards River

145

start 41 .1459068953479 -90

.9832855425151 MERCER

end 41 .2835429634312 -90 .1022166001482

HENRY

Eliza Creek

146

start 41 .2754465656779 -90

.9740195834639 MERCER

end 41 .2948140261561 -90 .8870757880317

MERCER

---

BASIN NAME

McCraney Creek

March 31, 2006

Page 22 of 37

Segment Name

Segment No

.

End Points

Latitude

Longitude

COUNTY

153

start 40 .7615810139869 -91 .0723400800456

HENDERSON

end 40 .7295594797542 -90.7480413061409 WARREN

Galena River

382

start 42

.450241615252 -90.3876497193745 JO DAVIESS

end 42 .5068721036534 -90.390459616835

JO DAVIESS

Green Creek

5

start 37

.4514943718452 -89.3379244013686 UNION

end 37 .4666314694209

-89.3048476846202 UNION

Hadley Creek

188

start 39 .7025380326419 -91 .1396851101986

PIKE

end 39 .7351716794518 -90.9664567571417 PIKE

Hells Branch

378

start 42 .3582317355027

-90.185076448587 JO DAVIESS

end 42 .4166702490621 -90.1660286242329

JO DAVIESS

Henderson Creek

134

start 41 .0518601460692 -90.652709618504

WARREN

end 41 .0728998007979 -90.3331881878676 KNOX

150

start 40 .8788582366336 -90.9641994146698

HENDERSON

end 40 .989888583038 -90.8698875032336 HENDERSON

Hillery Creek

144

start 41 .2699394405307 -90.2020116075301

HENRY

end 41

.2553101029329 -90 .1954503442612 HENRY

Honey Creek

157

start 40 .7000823335975

-91 .0347691132118 HENDERSON

end 40 .7064734203141 -90 .8589436695132

HENDERSON

186

start 39 .4871465283426 -90

.7799240715991 PIKE

end 39 .5633421986505 -90 .8011460205638

PIKE

207

start 40 .1052246871151

-91 .2149469620062 ADAMS

end 40 .0689996865178 -91

.2253825583113 ADAMS

Hutchins Creek

7

start 37 .5043385818368 -89

.3755380391598 UNION

end 37 .58788138261

-89 .3917584202331 UNION

Little Bear Creek

194

start 40 .3213003292038 -91

.2390256840921 HANCOCK

end 40

.302753021887 -91 .3102530307924 HANCOCK

Little Creek

200

start 40 .1807360433073

-91 .2803860136891 ADAMS

end 40 .230127123031 -91 .3051461065984

HANCOCK

---

BASIN NAME

Segment Name

Segment No .

End Points

Latitude

Longitude

COUNTY

189

start 39 .7167396162723

-91 .1729844320811 PIKE

end 39 .8572624790589 -91 .0907175471865

ADAMS

Mill Creek

191

start 39

.8643091712617 -91 .343323220756 ADAMS

end 39 .9675786362521 -91

.2477003180771 ADAMS

377

start 42 .3539782358808

-90 .1879698650198 JO DAVIESS

end 42 .4518923573772 -90

.2485882677025 JO DAVIESS

496

start 38

.9472270910927 -90 .2956721236088 JERSEY

end 38 .9871246152411 -90

.3431576290565 JERSEY

Mississippi River

2

end 37.1887629940337 -89 .4576720472899

ALEXANDER

29

start 38 .8664117755941 -90 .1477786925267

MADISON

end 38 .327795025976 -90 .3709302644266

MONROE

384

start 42 .5079432477656 -90

.6430378486115 JO DAVIESS

end 41 .5746193723759 -90 .392321397091

ROCK ISLAND

440

start 39.326689248302 -90

.8243988873681 CALHOUN

end 39.8935238218567

-91 .4437639810547

ADAMS

Mud Creek

202

start 40.1812148450863 -91 .2785060826782

ADAMS

end 40.1852755387137 -91 .2660018265735

ADAMS

Nichols Run

156

start 40.7735451176215 -90 .9672827833242 HENDERSON

end 40.7648298879037 -90

.9675416302885 HENDERSON

North Henderson Creek

136

start 41 .0973619647032 -90 .7191141378965 MERCER

end

41 .119743833988 -90 .4494190524502 MERCER

Parker Run

141

start 41 .2623500459087 -90 .4891341819923 MERCER

end 41

.2260011828886 -90 .4145431241447 HENRY

Pigeon Creek

190

start 39 .7143204171354 -91 .2372670411405 PIKE

end 39

.8220301600964 -91 .2087922935523 ADAMS

Pope Creek

137

start- 41 .1401437091914 -90.8116816399802

MERCER

end 41 .1394137238591 -90.2877112230995 KNOX

Sixmile Creek

187

start 39 .4592604039597 -90.8902507134236

PIKE

end 39 .5431657559583 -90.8891598316201 PIKE

March

31, 2006

Page 23 of 37

---

BASIN NAME

Longitude

COUNTY

-91

.2423526162923 HANCOCK

-91 .2189777154329 HANCOCK

-90 .9146232873076 HENDERSON

end 40 .9291958384872 -90 .7919464822621

HENDERSON

South Edwards River

139

start 41

.2656645104853

-90 .2611866223557

HENRY

end 41 .1927071399434 -90

.0393078982573 HENRY

South Fork Apple River

-90 .0472460146999

JO DAVIESS

-89 .9845802036023

JO DAVIESS

203

start 40

.1677973436879 -91 .2933473698779

ADAMS

end 40 .0950329934447 -91

.0607522810856 ADAMS

South Henderson Creek

-90 .4811337762604 WARREN

-90 .4338464913801 KNOX

-90 .9641994146698

HENDERSON

-90 .8707263659685 HENDERSON

-89 .8985337135691 CARROLL

-89 .783599495409 CARROLL

-91 .234525810555

ADAMS

-91 .1501036788115

ADAMS

-91

.2447718289928 ADAMS

-91

.1658282439773 ADAMS

Unnamed Tributary ofApple

River

375

start 42

.3613497834653 -90 .1603277978963 JO DAVIESS

end 42 .3651703478401

-90

.1182227692179 JO DAVIESS

Unnamed Tributary of Bear Creek

197

start 40 .3187160045841

-91 .2379753573306 HANCOCK

end 40

.3220475782343

-91 .2218711128768 HANCOCK

201

start 40

.2483484763178 -91 .2634157983708 HANCOCK

end 40 .2576281291385 -91

.2420554576986 HANCOCK

Unnamed Tributary of Copperas Creek

149

start 41

.3759130587612 -90 .8569366994939 ROCK ISLAND

March 31, 2006

Page 24 of 37

135

start 41 .0188478643653

end 41 .0121123609019

151

start 40

.8788582366336

end 40 .8534764362853

Straddle Creek

301

start 42 .0906369943302

end 42 .1316680929413

Thurman Creek

204

start 40 .1277667094818

end 40 .1580795200863

Tournear Creek

193

start 39 .9042285951329

end 39 .8738503674823

Segment Name

Segment No .

End Points

Latitude

Slater Creek

198

start 40.291601584329

end 40.2822885732908

Smith Creek

152

start 40.9297989285848

380

start 42 .4468385101031

end

South Fork Bear Creek

42 .4176188464167

---

BASIN NAME

Segment Name

Segment No .

End Points

Latitude

end 41

.3735944469795

Longitude

-90 .829794872711

COUNTY

ROCK ISLAND

Unnamed Tributary of Furnace Creek

373

start 42 .3419228115146 -90 .2583358633166

JO DAVIESS

end 42 .3737126096251 -90 .2971522307335

JO DAVIESS

374

start 42 .3419228115146 -90 .2583358633166

JO DAVIESS

end 42 .3615209718591

-90 .24931703774 JO DAVIESS

Unnamed Tributary of South Edwards River

143

start 41 .2011516193172 -90 .1850818577344

HENRY

end 41 .1943841818099 -90 .1839265246101

HENRY

Unnamed Tributary of South Fork of Bear Creek

206

start 40 .0797919556019

-91 .1461193615862 ADAMS

end 40 .0587441356106

-91 .1467388825794 ADAMS

West Fork Apple River

379

start 42 .4777531846594 -90 .1103501186504

JO DAVIESS

end 42

.4739843218597 -90 .1321517307332 JO DAVIESS

West Fork of Bear Creek

195

start 40 .3385207135212

-91 .2203393068898 HANCOCK

end 40 .3592824400704 -91

.2334357995319 HANCOCK

Yankee Branch

147

start 41 .2850778212191

-90 .9379823025264 MERCER

end 41 .2926277702981 -90 .9335620769218

MERCER

Ohio

Big Creek

16

start 37 .4366764302436 -88 .3127424957005

HARDIN

end 37 .5591274535694

-88 .3148730216063 HARDIN

Big Grand Pierre Creek

13

start 37 .4163002207384 -88

.4338876873615 POPE

end 37 .5702304746463 -88 .4292613661871

POPE

Hayes Creek

10

start 37 .4452331751972 -88 .7114120959417

JOHNSON

end 37 .4559134065693 -88 .6286228702431 POPE

Hicks Branch

14

start 37 .5432903813926 -88

.4245265989312 POPE

end 37 .5391971894773 -88 .4135144509885

HARDIN

Little Lusk Creek

12

start 37 .4991426291527 -88

.5277357332102 POPE

end 37 .5247950767618 -88 .5017934865946

POPE

Little Saline River

9

start 37 .6429893859023

-88 .6229273282692 SALINE

March 31, 2006

Page 25 of 37

---

BASIN NAME

Segment Name

Segment No .

End Points

Latitude

end 37 .5783125058777

Longitude

-88 .7169929932876

COUNTY

JOHNSON

Lusk Creek

11

start 37.3685952948804

-88 .4926140087969 POPE

end 37 .5649232438096

-88 .5644984122843 POPE

Miss River

2

start 36 .9810279805712 -89 .1311552055554 ALEXANDER

Ohio River

1

start 36 .9810279805712

-89 .1311552055554 ALEXANDER

end 37 .7995447392016 -88

.0255709974801 GALLATIN

Simmons Creek

15

start 37 .4274681380208 -88 .4392381154217

POPE

end 37 .4644921054999 -88 .4850750109356 POPE

South Fork Saline River

8

start 37 .6372646144582

-88 .6447143188352 SALINE

end 37 .6650992000287 -88 .7471054185807

WILLIAMSON

Unnamed Tributary of Big Creek

18

start 37 .4816237108967 -88.3412279259479

HARDIN

end 37 .4836843600581

-88 .3434390004066 HARDIN

Wabash River

488

start 37 .7995447392016 -88.0255709974801

GALLATIN

Rock

Beach Creek

302

start 41 .8989215290323 -89 .121081932608

OGLE

end 41 .8637759544565 -89 .185844184387

LEE

Beaver Creek

322

start 42.2551087433884 -88 .9247700103803

BOONE

end 42.4341346635117

-88 .7603784300954 BOONE

Black Walnut Creek

341

start 42.1132080942552

-89 .2141520188153 OGLE

end 42.061557908797 -89 .2316600156935 OGLE

Brown Creek

335

start 42.3568412672282 -89 .4493817584574

STEPHENSON

end 42.3697340053709

-89 .4802304815634

STEPHENSON

Buffalo Creek

358

start 41 .9242552302868 -89 .6809355972221

WHITESIDE

end 41 .9752373833258

-89 .6243677263482 OGLE

Cedar Creek

337

start 42 .3709196286357 -89

.670256711355 STEPHENSON

end 42.3896058186609 -89 .5870343171161

STEPHENSON

March 31, 2006

Page26of37

---

BASIN NAME

Kingsbury Creek

311

March 31, 2006

Page27oJ37

Segment Name

Segment No .

End Points

Coal Creek

Latitude

Longitude

COUNTY

208

start 41 .3941767873198 -89 .8287586795479

BUREAU

end 41 .2930847238959 -89 .6659810678663

BUREAU

Coon Creek

304

start 42

.0365871032824 -89 .489365571257 OGLE

end 42 .0550520228278 -89

.4762995939105 OGLE

326

start 42 .254519734978

-88 .7945563884938 BOONE

end 42 .1336677087989 -88

.6039205825106 DEKALB

Crane Grove Creek

371

start 42

.2656461748962 -89 .6058461735176

STEPHENSON

end 42

.2317224844045 -89 .5804359629382 STEPHENSON

Deer Creek

307

start 42 .1046195671697 -88

.7267155451459 DEKALB

end 42 .1076541965304 -88 .6684575625598

DEKALB

Dry Creek

332

start 42 .4322162336943

-89 .0509181181504 WINNEBAGO

end 42 .4892211712754

-88 .9789486331688 WINNEBAGO

East Branch South Branch of Kishwaukee River

306

start 42 .0108038948242 -88 .7236807475971

DEKALB

end 41

.9822037358546 -88 .5449399063616 KANE

East Fork Mill Creek

343

start 42.1402053009442 -89 .2945061380348

OGLE

end 42.1744627607887

-89 .268245093523 OGLE

Elkhorn Creek

350

start 41 .8392614813286

-89 .6956810578758

WHITESIDE

end 42.0864514128748 -89

.636841111792 OGLE

Franklin Creek

303

start 41 .8885909580789

-89 .4120344682789 OGLE

end 41 .830393186845 -89 .3092915487959

LEE

Goose Creek

356

start 41

.9282951879448 -89 .692114617634

WHITESIDE

end 41 .9476422569681 -89

.6849104470831 OGLE

Green River

359

start 41 .6266589513433 -89 .5688644755145

LEE

end 41 .8177589430141

-89 .1263088319088

LEE

Kilbuck Creek

312

start 42 .1838622639314 -89 .1301689015062

WINNEBAGO

end 41 .9181917577798

-88 .9212387567239 DEKALB

---

BASIN NAME

Otter Creek

March 31, 2006

Page 28 of 37

Segment Name

Segment No .

End Points

Latitude

start 42 .1077794424363

Longitude

-88 .8726630666396

COUNTY

DEKALB

end 42.1579325310556 -88 .8548684690422 BOONE

Kishwaukee River

318

start 42 .1866384939252 -89.1320796977525 WINNEBAGO

end 42 .2666635150817 -88

.5250450377336

MCHENRY

Kyle River

295

start 41 .9881250432719 -89 .3232327202272 OGLE

end 41

.9206998470585 -89 .0576692414087 OGLE

Leaf River

345

start 42 .093677393629 -89

.3249228482157 OGLE

end 42 .1545774626081 -89

.5725820219443 OGLE

Lost Creek

368

start 42.245723132043 -89.7807765552299 STEPHENSON

end 42 .2314500223394 -89 .7709518073782 STEPHENSON

Middle Creek

344

start 42.1559584011258 -89

.2911997709031 OGLE

end 42.1737499306461 -89.2931763612625 OGLE

Mill Creek

342

start 42 .1206847838382 -89 .2792143996076 OGLE

end 42.2092574596508 -89.3358557551327 WINNEBAGO

Mosquito Creek

323

start 42.3066628798583 -88 .9047855300292 BOONE

end 42.3100003482313

-88 .9099328193755 BOONE

327

start 42 .246521748985 -88 .7802719043895 BOONE

end 42

.1906300595167 -88 .7849304281662 BOONE

Mud Creek

325

start 42 .2592878387497 -88 .7503449689069

BOONE

end 42 .2805097009077 -88 .7381130663589 BOONE

346

start 42 .1301628959448 -89 .4043328758949

OGLE

end 42 .1639762007661 -89 .4554911246235

OGLE

North Branch Kishwaukee River

320

start 42 .2655855837644 -88 .5514660318739 MCHENRY

end 42 .4163330454161 -88 .5232715616737 MCHENRY

North Branch Otter Creek

292

start 42 .4412940471901 -89 .3074016078782 WINNEBAGO

end 42

.4570625094589

-89

.356265092275 WINNEBAGO

North Fork Kent Creek

333

start 42 .2621663352674 -89 .0944316410734 WINNEBAGO

end 42 .310438304708 -89 .1651357273603 WINNEBAGO

---

BASIN NAME

Segment Name

Segment No .

End Points

Latitude

Longitude

COUNTY

291

start 42 .4565457866811 -89 .2410171137247

WINNEBAGO

end 42 .4412940471901 -89 .3074016078782 WINNEBAGO

348

start 42 .1345277930786 -89.411492883497 OGLE

end 42 .1911608097275 -89.4222625773931 OGLE

Owens Creek

310

start

42

.1012605056104 -88 .8850996053184 DEKALB

end 41 .994362186304 -88.8506687869106 DEKALB

Pine Creek

305

start 41 .9113031895505 -89.452879176459 OGLE

end

42

.0376146514025 -89.4909007464322 OGLE

Piscasaw Creek

324

start 42 .2618063936707 -88.8176068924198

BOONE

end 42 .3916885547221 -88 .7041339551642 MCHENRY

Raccoon Creek

328

start

42

.4479288873423

-89.098286193015

WINNEBAGO

end 42 .4829761640917 -89.1400856130022

WINNEBAGO

Reid Creek

353

start 41 .8644109921615 -89.5919014348703 LEE

end 41 .9135187969506 -89.5728723309406 OGLE

Richland Creek

336

start 42 .3456275295301 -89.6832413426115 STEPHENSON

end 42 .5047442687577 -89 .6477619118761 STEPHENSON

Rock River

294

start 41 .9881250432719 -89 .3232327202272 OGLE

end 42 .4962174640048 -89 .0418910839077 WINNEBAGO

Rock Run

490

start 42.3211872463585 -89 .4237342452712

STEPHENSON

end 42 .4281098959774 -89 .4483616268915 STEPHENSON

Rush Creek

321

start 42.2560676137827

-88 .7031592940742 MCHENRY

end 42.4031741332744 -88 .5930626223964

MCHENRY

Silver Creek

338

start 42.0611717976691 -89.335901928201 OGLE

end 42.0866765435436 -89.3839889015445

OGLE

Skunk Creek

354

start 41.8794703976699 -89.7072621672884 WHITESIDE

end 41.897582187238 -89.7290746844729

WHITESIDE

South Branch Kishwaukee River

308

start 42.2001609257306 -88.9840657029051

WINNEBAGO

March 31, 2006

Page 29 of 37

---

BASIN NAME

Segment Name

Segment No .

End Points

Latitude

end 41

.9015798699947

Longitude

-88 .7706697182685

COUNTY

DEKALB

315

start 42

.2627093767756 -88

.5609522875415 MCHENRY

end 42 .1066209842679

-88 .4620443477841

KANE

South Branch of Otter Creek

280

start 42 .4412940471901

-89 .3074016078782

WINNEBAGO

end 42

.4343122756071 -89

.3600650183381 WINNEBAGO

South Fork of Leaf River

347

start 42 .1296104494647

-89 .4546456401589

OGLE

end 42 .1085718337046

-89 .5037134270228 OGLE

South Kinnikinnick Creek

330

start 42

.419961259532 -89

.018119476068 WINNEBAGO

end 42

.4190921988888 -88 .8710507717794

BOONE

Spring Creek

339

start 42 .0709215390383

-89.325546679708 OGLE

end 42.0590157098796 -89.3110803788049

OGLE

Spring Run

313

start 42.0402370001041

-89 .0065478421579

OGLE

end 42

.0507770466662 -88 .9858854279893

OGLE

Steward Creek

297

start 41

.8903673258897 -89

.1021064698423 OGLE

end 41 .8259979751563

-88 .9624738458404

LEE

Stillman Creek

340

start 42

.1259475370515 -89

.2319193482332 OGLE

end 42

.0372051268587 -89 .1542573242497

OGLE

Sugar Creek

352

start 41 .8392614813286

-89 .6956810578758

WHITESIDE

end 41 .8644109921615

-89 .5919014348703 LEE

Sugar River

293

start 42 .4357992567436 -89

.1971727593158

WINNEBAGO

end 42

.4982890047043 -89 .2624235677856

WINNEBAGO

Sumner Creek

334

start 42

.3227762010459 -89

.3830042631004 WINNEBAGO

end 42 .25195988987

=89 .3997975146614

STEPHENSON

Turtle Creek

329

start 42 .4929910323531

-89

.0439958173493 WINNEBAGO

end 42 .4961371053418

-89 .0246519221989 WINNEBAGO

Unnamed Tributary

361

start 41

.6608316904842 -89

.4728200038511 LEE

end 41 .6425311558513

-89 .4137140926471

LEE

365

March 31, 2006

Page 30 of 37

---

BASIN NAME

Segment Name

Segment No .

End Points

Latitude

start 41 .7443681625006

Longitude

-89 .168951821186

COUNTY

LEE

end 41 .738182745458 -89 .1042187039322 LEE

492

start 42 .1246069284208 -88 .5882544654343

DEKALB

end 42 .1028295788327 -88 .5105326912596 KANE

Unnamed Tributary of Buffalo Creek

357

start 41 .9332348110612

-89 .6342816030603 OGLE

end 41 .93890647032

-89 .6092042883405 OGLE

Unnamed Tributary of Coon Creek

282

start 42

.1336677087989 -88 .6039205825106 DEKALB

end 42 .0754334787177 -88

.5442273447775 KANE

491

start 42 .150113155436

-88 .6091713292612 DEKALB

end 42 .1691790844289 -88

.5070973943593 MCHENRY

Unnamed Tributary ofElkhorn Creek

355

start 41 .9378871254405 -89

.7318712136894 CARROLL

end 41 .9525180771018 -89 .7332762139612 CARROLL

Unnamed Tributary of Green River

360

start 41 .8177589430141

-89 .1263088319088 LEE

end 41 .8012094828667 -89 .0296681468724

LEE

362

start 41

.66455888603

-89 .4729486542104 LEE

end 41 .650155479351 -89 .4398464027055

LEE

364

start 41 .750735979575 -89 .2189268880904

LEE

end 41 .7278383993539 -89 .1577958588247 LEE

366

start 41 .7304138832457 -89 .2547363744761

LEE

end 41

.7421804770435 -89 .2683034846455 LEE

367

start 41 .7336722733557 -89 .2459381167869

LEE

end 41 .6996843512729 -89 .2025409068097

LEE

489

start 41 .7765356433433 -89

.1781811586274 LEE

end 41 .791148742648 -89

.1782543204659 LEE

Unnamed Tributary ofKyte River

298

start 41

.969037423435 -89 .2727932207785 OGLE

end 41

.9423468128644 -89 .2676252361535 OGLE

299

start 41

.9474122868214 -89 .1742920304606 OGLE

end 41 .9511979792854

-89 .1378721025283 OGLE

Unnamed Tributary of North Branch Kishwaukee River

319

start 42 .4163330454161 -88 .5232715616737

MCHENRY

end 42 .4218523642031

-88 .5063783493938 MCHENRY

Unnamed Tributary of Rock River

331

start 42 .3730089457359 -89 .0581319432428

WINNEBAGO

March 31, 2006

Page 31 of 37

---

BASIN NAME

Brouilletts Creek

March 31, 2006

Page 32 of 37

Segment Name

Segment No .

End Points

Latitude

end 42 .382841503485

Longitude

-89 .0950184603254

COUNTY

WINNEBAGO

Unnamed Tributary of South Branch Kishwaukee River

309

start 42 .1219922946716 -88

.9236557341498 DEKALB

end 42 .1138208388943

-88 .9372243118963

DEKALB

316

start 42

.1565644453666 -88 .4449935784875

MCHENRY

end 42 .1594149792506

-88 .4178533576301

MCHENRY

317

start 42 .234010247227

-88 .5199093723576

MCHENRY

end 42 .2225793216803

-88 .5259266256801 MCHENRY

Unnamed Tributary of Spring Run

314

start 42

.0401565844742 -88

.9948863767949 OGLE

end 42.0116835703089

-88 .9710672286801

OGLE

Unnamed Tributary of Steward Creek

296

start 41 .8444592840822

-89 .0070046248547 LEE

end 41

.8601589546913 -88

.9714244440014 LEE

300

start 41 .871719116543

-89 .069434926448

LEE

end 41 .8792477545579 -89

.037635229652 LEE

Unnamed Tributary of Yellow Creek

369

start 42

.3067615221991 -89 .8535571166391

STEPHENSON

end 42.3493669268537

-89 .8275355259147

STEPHENSON

West Fork Elkhorn Creek

351

start 42

.0864514128748 -89 .636841111792

OGLE

end 42 .0924853439498

-89 .6474944357754

OGLE

Willow Creek

363

start 41 .7653209616214

-89 .1943294683724 LEE

end 41 .7141851660088

-89 .032161004274

LEE

Yellow Creek

370

start 42

.2899156684427 -89 .5696276563017

STEPHENSON

end 42 .3796215769162

-89 .9350879560031

JO DAVIESS

Wabash

Bean Creek

437

start 40.2950579779894

-87 .7823902126108

VERMILION

end 40.3344744135429 -87

.7494458762005 VERMILION

Big Creek

457

start 39 .3351439545995 -87.5878012286214

CLARK

start 39 .436126036547 -87.7023848396263

CLARK

Bluegrass Creek

436

start 40

.301292752824 -87.7969361668719

VERMILION

end 40 .381268589802

.87.8562389558508

VERMILION

---

BASIN NAME

Dudley Branch

475

March 31, 2006

Page 33 of 37

Segment Name

Segment No .

End Points

450

Latitude

Longitude

COUNTY

start 39 .7057649552945

-87 .5509615193818 EDGAR

end 39 .797449971524 -87 .7178559181463

EDGAR

Brush Creek

468

start 38

.993072718826 -88 .1273817532169

JASPER

end 38 .9675510537677

-88 .1471375817992 JASPER

Brushy Fork

484

start 39

.7161188745587 -88 .0853294840712

DOUGLAS

end 39

.8111289403664 -87 .8839288887749

EDGAR

Buck Creek

435

start 40 .3115126234324

-87 .9255710854089 VERMILION

end 40 .2862675329103 -87

.9704593374522 CHAMPAIGN

Cassell Creek

473

start 39

.4866434423672 -88 .2094970436354

COLES

end 39 .4909698054293

-88 .207848854172 COLES

Catfish Creek

477

start 39 .680891264864 -87

.9341744320393 EDGAR

end 39 .6581354970801 -87 .8937116601235

EDGAR

Clark Branch

483

start 39 .8111289403664

-87 .8839288887749

EDGAR

end 39 .8226610039489 -87

.8513747624001 EDGAR

Collison Branch

439

start 40 .2351860050982

-87.7725365689525

VERMILION

end 40 .2197161120333 -87

.803155121171 VERMILION

Cottonwood Creek

469

start 39 .2033657707304 -88

.2765033266093 CUMBERLAND

end 39

.3142137713574 -88 .229342077034

CUMBERLAND

Crabapple Creek

452

start 39 .7057649552945 -87.5509615193818

EDGAR

end 39 .8065708276187

-87.6467768455628

EDGAR

Crooked Creek

465

start 38 .9817031629594 -88

.066438923761 JASPER

end 39

.0356467346919 -88.0923368283887

JASPER

Deer Creek

485

start 39 .7053403128076

-88.0850387247647

DOUGLAS

end 39.7025679945443 -88

.2058470030399 DOUGLAS

Donica Creek

479

start 39 .6453315324326

-87 .9892294370803

COLES

end 39

.6172623271272 -87

.9782640861296 COLES

---

BASIN NAME

Segment Name

Segment No .

End Points

Latitude

Longitude

-88 .0564563693231

COUNTY

start 39.5115642227627

COLES

end 39 .5068188298145

-88 .043669581567

COLES

East Crooked Creek

287

start 39 .0356467346919 -88

.0923368283887 JASPER

end 39

.1659729856615 -88 .0610310241876

JASPER

East Fork Big Creek

458

start 39 .436126036547

-87 .7023848396263 CLARK

end 39 .5471103780713

-87 .760040304497 EDGAR

Embarras River

460

start 38 .9148628762488 -87 .9834798036322

JASPER

end 39 .7161188745587

-88 .0853294840712 DOUGLAS

Feather Creek

432

start 40 .1172818042134 -87.8342855159987

VERMILION

end 40 .1416543211304 -87.8399367268356

VERMILION

Greasy Creek

480

start 39

.6325904592965 -88 .0822649850404

COLES

end 39 .6182255297223

-88 .1320998047424 COLES

Hickory Creek

464

start 38 .9714278418083 -87.972721454297

JASPER

end 38

.99191464315

-87 .989292523907 JASPER

Hickory Grove Creek

478

start 39 .6581354970801 -87

.8937116601235 EDGAR

end 39 .5712873627184 -87.8825676201308

EDGAR

Hurricane Creek

470

start 39 .2889007816578

-88 .1544749600653

CUMBERLAND

end 39 .3793118297358 -88

.0668208708762 COLES

Jordan Creek

433

start 40

.0794151192358 -87 .7990673709556

VERMILION

end 40 .0588834821927 -87 .8360461636444

VERMILION

443

start 40.3360527696651

-87 .6231745570584

VERMILION

end 40 .3553265493525 -87 .5278198412106

VERMILION

Kickapoo Creek

471

start 39 .4379695819539

-88 .1681483569976 COLES

end 39 .4597583113682 -88 .2917593820249

COLES

Knights Branch

438

start 40 .2763499940372

-87 .7961879249888

VERMILION

end 40 .2520446574291

-87 .8336356533235 VERMILION

Little Embarras River

476

start 39

.5736361588448 -88 .0726889440362

COLES

end 39 .680891264864

-87 .9341744320393 EDGAR

March 31, 2006

Page 34 of 37

---

BASIN NAME

South Fork Brouilletts Creek

453

March 31, 2006

Page 35 of 37

Segment Name

Segment No .

End Points

Latitude

Longitude

COUNTY

Little Vermilion River

426

start 39 .9463345271443 -87 .5536756201362 VERMILION

end 39 .9593741043792 -87 .6447473681732 VERMILION

Middle Branch

442

start 40.3096675860339 -87 .6376716065503

VERMILION

end 40.417753327133 -87 .5275419211693 VERMILION

Middle Fork Vermilion River

428

start 40.1035656386662

-87 .7169902321166 VERMILION

end 40.4043343147541 -88 .0191381621282

FORD

Mill Creek

487

start 39 .2394256838229 -87 .6762126527038 CLARK

end 39 .3566749194214 -87 .7425049309309 CLARK

Muddy Creek

242

start

39 .1821395682335 -88 .2309155529877 CUMBERLAND

end 39 .2033657707304 -88 .2765033266093

CUMBERLAND

North Fork ofEmbarras River

461

start 38 .9148628762488 -87.9834798036322 JASPER

end 39 .0924749553725 -87.9784039128617

JASPER

North Fork Vermilion River

441

start 40.236054881277 -87.6293326109766

VERMILION

end 40 .5010729612407 -87.5261721834388 IROQUOIS

Panther Creek

462

start 39 .0924749553725 -87 .9784039128617

JASPER

end 39 .184289386946 -88 .0087906828419 CUMBERLAND

Polecat Creek

474

start 39 .5013303165832 -88 .1055006912296 COLES

end 39 .5162859310237

-88 .0338496162262 COLES

Riley Creek

472

start

39

.4712869216685 -88 .2108945161318 COLES

end 39 .5116227820733 -88 .2569469311765

COLES

Salt Fork

429

start 40 .1035656386662 -87 .7169902321166 VERMILION

end 40

.0368232483006 -88 .0746580039075 CHAMPAIGN

455

start 39 .7425080214619 -87 .572919448772 EDGAR

end 39

.8018493662144 -87 .5775868051385 EDGAR

Snake Creek

454

start 39 .7128111863363 -87 .6415954465778 EDGAR

end 39 .7066978623237

-87 .6543043306751 EDGAR

---

BASIN NAME

March 31, 2006

Page 36 of 37

Segment Name

Segment No.

End Points

Latitude

start 39 .7256495590209

Longitude

-87 .6437626049444

COUNTY

EDGAR

end 39 .7319449005729 -87 .6951881181821 EDGAR

Stony Creek

431

start 40 .0943454186494 -87 .8170769835194 VERMILION

end 40 .1548847864725 -87.8840063394108 VERMILION

Sugar Creek

456

start 39 .4838820536199 -87 .5320762217325 EDGAR

end 39 .6298164781408 -87 .6762882912482 EDGAR

Unnamed Tributary of Big Creek

459

start 39 .5047911835054 -87 .7121475341945 EDGAR

end 39 .5692784693864 -87 .7194139533441 EDGAR

Unnamed Tributary ofBrouilletts Creek

451

start 39 .797449971524 -87 .7178559181463 EDGAR

end 39 .831592697221 -87

.7758036967074 EDGAR

Unnamed Tributary of Brushy Fork

482

start 39 .7340344129883 -88 .0771406153965 DOUGLAS

end 39 .802586616189 -88 .0753634663247 DOUGLAS

Unnamed Tributary of Deer Creek

486

start 39 .7102184848625 -88 .1385435180688 DOUGLAS

end 39 .678866903649 -88 .1425332064637 DOUGLAS

Unnamed Tributary of Embarras River

467

start 38 .9934159067144 -88 .129258689394 JASPER

end 39 .0034725453128 -88 .1210073578163 JASPER

Unnamed Tributary of Greasy Creek

481

start 39 .6182255297223 -88 .1320998047424 COLES

end 39 .621059195964 -88 .1538483534688 COLES

Unnamed Tributary of Hickory Creek

210

start 38 .99191464315

-87 .989292523907 JASPER

end 39 .0117394234421 -87 .9896104862878 JASPER

Unnamed Tributary of Middle Fork Vermilion River

434

start 40 .3478602982847 -87 .9479087836067 CHAMPAIGN

end 40 .3408935605508 -87 .9885982351498

CHAMPAIGN

Unnamed Tributary of Stony Creek

430

start 40.1548847864725 -87.8840063394108

VERMILION

end 40.1706704853124 -87 .9033972187304 VERMILION

Unnamed Tributary or North Fork of the Vermilion River

444

start 40.3553498759616 -87 .6852979017427 VERMILION

end 40 .3665727663496 -87 .733231992072 VERMILION

445

start 40 .483638183168 -87 .5751075709757 VERMILION

end 40 .4930209841439 -87 .5771391859822 IROQUOIS

---

B, 4SIN NAME

March 31, 2006

Page 37 of 37

Segment Name

Segment No .

End Points

Latitude

Longitude

COUNTY

446

start 40.423223711311 -87

.6788932053507 VERMILION

end 40.4280461995299

-87.6895565256772 VERMILION

Vermilion River

427

start 40 .0116868805566 -87.5337540394346 VERMILION

end 40 .1035656386662

-87.7169902321166 VERMILION

Wabash River

488

end 39 .3034266238732 -87 .605592332246 CLARK

West Crooked Creek

466

start 39.0356467346919 -88 .0923368283887

JASPER

end 39 .0545759701349

-88 .1009871944535 JASPER

West Fork Big Creek

19

start 39.436126036547 -87 .7023848396263 CLARK

end 39.5012337820195 -87 .8003199656505

EDGAR

Willow Creek

463

start 39 .0191952007294 -87.9402449982878

CRAWFORD

end 39 .0529145507759 -87.9280073176635 CRAWPORD

---

I

Recommended Revisions to the

Illinois General Use Water-Quality Standard for Dissolved Oxygen

March 31, 2006

by

Illinois Department of Natural Resources

and

Illinois Environmental Protection Agency

---

Overview of recommended revisions to the Illinois water-quality standard for

dissolved oxygen

In April 2004, the Illinois Association of Wastewater Agencies proposed revisions to the General

Use water-quality standard for dissolved oxygen

(In the matter of

: Proposed Amendments to

Dissolved Oxygen Standard,

35 Ill . Adm

. Code 302.206, R-04-25)

. In response to this proposal,

the Illinois Department of Natural Resources (Illinois DNR) and the Illinois Environmental

Protection Agency (Illinois EPA) recommend alternative revisions of the dissolved oxygen

standard

. Illinois DNR and Illinois EPA believe that the current standard for Illinois General

Use waters is too simplistic

; it inadequately accounts for the varied dissolved oxygen

requirements of aquatic life in these waters

. The current standard also inadequately accounts for

how dissolved oxygen concentrations vary across a broad range of natural aquatic conditions

throughout Illinois.

To replace the current General Use dissolved oxygen standard, Illinois DNR and Illinois EPA

recommend two levels of standards, each level applying to one of two sets of waters in Illinois

.

One level applies to the large majority of General Use waters and is designed to ensure sufficient

oxygen concentrations for the aquatic life therein

. Another higher level of standards applies to a

small, selected subset of General Use waters

; these thresholds are designed to protect Illinois'

most sensitive types and life stages of aquatic life that require relatively higher dissolved oxygen

concentrations

. Illinois DNR and Illinois EPA identify about 8% of the length of Illinois' 71,394

stream miles as requiring these higher dissolved oxygen levels (based on stream miles in the U

.S.

Geological Survey National Hydrography Dataset

; see internet website : //nhd.usgs.gov/)

. The

1

---

recommended numeric standards for each of these two sets of General Use waters are based

primarily on the U .S

. Environmental Protection Agency (USEPA) national-criteria document,

"Ambient Aquatic Life Water Quality Criteria for Dissolved Oxygen (Freshwater)" (USEPA

1986)

. Illinois DNR and Illinois EPA use this document as a foundation from which to interpret

and incorporate more-recent information specifically applicable to the dissolved oxygen needs'of

aquatic life in Illinois waters .

The revisions to the current dissolved oxygen standard proposed by the Illinois Association of

Wastewater Agencies (IAWA) are also based on the USEPA (1986) national-criteria document

;

however, Illinois DNR's and Illinois EPA's recommended revisions differ from those of IAWA

in the following primary ways (Figure 1):

1) Illinois DNR and Illinois EPA define two levels of numeric standards, with a higher level that

provides enhanced protection in waters that have organisms especially sensitive to low

dissolved oxygen levels

. IAWA's proposed revisions make no such distinction

.

2) Illinois DNR and Illinois EPA provide a narrative standard for waters that naturally cannot

achieve consistently higher levels of dissolved oxygen, e.g.,

wetlands, sloughs, river

backwaters, and lakes and reservoirs below the thermocline

. IAWA's proposed dissolved

oxygen standards apply universally to all General Use waters

(In the matter of: Proposed

Amendments to Dissolved Oxygen Standard,

35 Ill . Adm

. Code 302

.206, R-04-25, Exhibit 1,

April 19, 2004) .

2

---

3) Illinois DNR and Illinois EPA recommend a longer period for the protection of early life

stages of fish : March through July. IAWA's early-life-stage period is March through June .

4) Consistent with USEPA (1986), Illinois DNR and Illinois EPA include a 30-day chronic

dissolved oxygen standard, i.e., daily mean averaged over 30 days . IAWA does not include

a 30-day chronic standard.

3

---

General Use

Waters

Dissolved Oxygen Standards Recommended by Illinois DNR/EPA

Wetlands, sloughs, river backwaters, lakes below thermocline, etc

. are protected by a narrative standard.

Dissolved Oxygen Standards Proposed by IAWA

Early Life Stages of Fish

:

Figure 1 . Comparison between dissolved oxygen standards recommended by Illinois DNR/Illinois EPA and those proposed by

IAWA.

Level 1

(enhanced protection)

Level 2

Early Life Stages of Fish

:

Early Life Stages of Fish :

Present

(March - July)

Absent

(August - Feb.)

Present

(March

- July)

Absent

(August - Feb.)

Daily Minimum

5

.0

4 .0

5 .0

3 .5

7-day Mean of

Daily Minima

4 .5

4

.0

7-day Mean of

Daily Means

6 .25

6 .0

30-day Mean of

Daily Means

6.0

5 .5

Present

(March - June)

Absent

(July - Feb.)

Daily Minimum

5 .0

3 .5

7-day Mean of

Daily Minima

4

.0

7-day Mean of

Daily Means

6.0

30-day Mean of

Daily Means

---

USEPA's water-quality criteria for dissolved oxygen provide a sound,

scientific foundation

Illinois DNR and Illinois EPA primarily base the recommended revisions to dissolved oxygen

standards on information in USEPA (1986), which provides a sound, scientifically based

foundation

. The USEPA (1986) criteria for dissolved oxygen address three critical elements not

addressed by the current Illinois standard

. First, the USEPA criteria account for differences in

sensitivity to low dissolved oxygen among types of fishes or macroinvertebrates . Second, the

USEPA criteria account for differences in sensitivity among life stages of fish . Third, the

USEPA criteria provide practical considerations that account for occasional natural occurrences

of low dissolved oxygen

. Incorporation of these elements greatly improves the utility of the

Illinois standards .

Illinois DNR and Illinois EPA recognize some limitations in using the information in USEPA

(1986) to revise Illinois dissolved oxygen standards

; therefore, these recommended standards

revisions are supported further by more-recent information that pertains specifically to aquatic

life in Illinois waters

. In general, to determine how the USEPA (1986) criteria apply in Illinois,

Illinois DNR and Illinois EPA address two primary questions

:'

1) Are the USEPA (1986) dissolved oxygen criteria sufficient for protecting the

most sensitive (to low dissolved oxygen) of the numerous types and life stages of fish and

macroinvertebrates that live in Illinois waters?

5

---

2) If not, then what alternative dissolved oxygen criteria would ensure sufficient

protection and in which Illinois waters should these higher criteria apply?

How the basic structure of USEPA criteria for dissolved oxygen applies to

Illinois dissolved oxygen standards

USEPA (1986) accounts for differences in dissolved oxygen sensitivity among types of fish or

macroinvertebrates by providing two different levels of dissolved oxygen criteria, labeled as

:

"coldwater" vs . "warmwater"

. USEPA (1986) states,

"Criteria for coldwater fish are intended to

apply to waters containing a population of one or more species in the family Salmonidae (Bailey

et al

. 1970) or to waters containing other coldwater or coolwater fish deemed by the user too be

closer to salmonids in sensitivity than to most warmwater species

. . . The warmwater criteria

are

necessary to protect

early life stages of warmwater fish as sensitive as channel catfish

and to

protect

other life stages of fish as sensitive as largemouth bass"

(p. 33; emphasis added)

. These

limits on

the applicability of USEPA's "warmwater" criteria provide the primary basis for much

of the discussion that follows in this document

. Additional to differences among species,

USEPA (1986) accounts for differences in dissolved oxygen sensitivity based on a fish's life

stage : early life stages vs

. other

. Overall, USEPA's (1986) approach results in four sets of

dissolved oxygen criteria (Table 1, columns 4, 5, 8, and 9)

.

Based on the information available at the time, USEPA's four categories of dissolved oxygen

criteria represented a practicable way of accounting for how different types and life stages of

6

---

aquatic life were known to differ in their sensitivity to low dissolved oxygen

. Illinois' current

water-quality standard for dissolved oxygen was developed and adopted before 1986 (Illinois

Pollution Control Board 1972)

; it does not account for these differences

. Therefore, revising

Illinois' current dissolved oxygen standard begins with evaluating how the USEPA (1986)

criteria apply to Illinois waters

. By carefully considering the strengths and limitations of

USEPA's (1986) dissolved oxygen criteria, Illinois DNR and Illinois EPA believe that these

nationally recommended criteria can be used as the basic framework for determining the most-

appropriate standards for protecting aquatic life in Illinois

. Illinois DNR and Illinois EPA build

on this framework by incorporating information that has become available since 1986 and that

pertains more directly to the many types of fish and macroinvertebrates that inhabit Illinois

waters.

Recommended dissolved oxygen standards to protect aquatic life in Illinois

For the large majority of Illinois General Use waters (Level 2 in Figure 1), the dissolved oxygen

standards recommended by Illinois DNR and Illinois EPA reflect the USEPA (1986) criteria

(Table 1)

. For a small subset of General Use waters (Level 1 in Figure 1), Illinois DNR and

Illinois EPA recommend the following

. Based on the sensitivities of Illinois fishes and

macroinvertebrates to low dissolved oxygen, Illinois DNR and Illinois EPA recommend a "daily

minimum" (acute) dissolved oxygen standard of 4

.0 mg/l to protect Illinois aquatic life that are

most sensitive to low dissolved oxygen when early life stages of fish are absent (Table 1, column

7)

. This threshold concentration is based primarily on protecting the most-sensitive

macroinvertebrates and is consistent with USEPA's (1986) recommendation

. "In summarizing

7

---

the state of knowledge regarding the relative se sitivity offish and invertebrates to low dissolved

oxygen, it seems that some species of insects and other crustaceans are killed at concentrations

survived by all species offish tested

. Thus, while most fish will survive exposure to 3 mg/1, many

species of invertebrates are killed by concentrations as high as 4 mg/1" (USEPA 1986, p. 23) .

For the same small subset of General Use waters (Level 1 in Figure 1), Table 1 (columns 6 and

7) shows Illinois DNR's and Illinois EPA's recommendations for chronic dissolved oxygen

standards. Using fish-species' relative chronic sensitivities (Rankin 2004) and some limited

information for macroinvertebrates-but lacking specific information about chronic thresholds

for the large majority of Illinois organisms-Illinois DNR and Illinois EPA recommend chronic

standards that represent a practical balance

. This balance primarily reflects that several Illinois

fish species are intermediate in chronic sensitivity between sensitive salmonids (i .e., trout,

salmon) and the two less sensitive species used as benchmarks for the USEPA (1986)

"warmwater" criteria (i.e., largemouth bass, channel catfish) . Consequently, Illinois DNR and

Illinois EPA simply select dissolved oxygen concentrations halfway between the USEPA (1986)

"coldwater" and "warmwater" chronic levels

. For example, for the period when early life stages

are absent, the USEPA "coldwater" threshold for the 7-day mean of daily minima is 5

.0 mg/I,

and the analogous "warmwater" threshold is 4 .0 mg/l . Illinois DNR and Illinois EPA select the

midpoint, 4 .5 mg/I (Table 1, column 7), as

the threshold for "intermediate" waters-which were

selected based on the approach explained later in this document

.

8

---

Table 1

. Allowable minimum concentrations of dissolved oxygen for the protection of aquatic life

. Thresholds shown are those recommended

either by USEPA (1986) or jointly by Illinois DNR and Illinois EPA

. Different minima apply for each of three types of aquatic habitat, based on

the relative sensitivity to low dissolved oxygen of the animal life therein

: "coldwater" vs . intermediate vs

. "warmwater"

. For each type of habitat,

minima are also stratified by time period, based on the presence of early life stages of fish

. For particular situations not indicated in the table

(e.g .,

manipulable discharges), alternative USEPA minima may apply (see USEPA [1986] pp

. 34 and 37-38) .

Habitats of Organisms

Intermediate in Sensitivity to Low

Dissolved 0 en

Illinois General Use Waters

(column 6)

(column 7)

(column 8)

(column 9)

"Daily

minimum" is the minimum dissolved oxygen concentration that occurs during a single calendar day .

23

"Daily

These bounds

mean" is

are

the

recommended

arithmetic

by

mean

Illinois

of dissolved

DNR and

oxygen

Illinois

concentrations

EPA only

;

measured

USEPA (1986)

in a

does

single

not

calendar

provide

dayspecific

.

bounds for the presence vs . absence of

early life stages .

9

Dissolved

Oxygen Measure

Type of

Dissolved

Oxygen

Measure

Recom-

mended

By

Habitats of Organisms

More Sensitive to Low Dissolved

Oxygen

("Coldwater")

Daily Minimum'

acute

USEPA

H)NR/

IEPA

Arithmetic Mean

of Daily Minima,

For a Contiguous

7-Day Period

Arithmetic Mean

of Daily Means',

For a Contiguous

7-Day Period

Arithmetic Mean

of Daily Means

2 ,

For a Contiguous

30-Day Period

(column 1)

chronic

chronic

chronic

(column 2)

USEPA

IDNR/

IEPA

USEPA

IDNR/

IEPA

USFePA

IDNRJ

IEPA

(column 3)

(column 4)

(column 5)

---

Different types of Illinois fish and macroinvertebrates require different

dissolved oxygen standards

Differences in dissolved oxygen requirements among types of Illinois stream fish

Illinois DNR and Illinois EPA believe that although USEPA's "warmwater" dissolved oxygen

criteria (Table 1, columns 8 and 9) are appropriate for the large majority of Illinois waters, they

provide insufficient protection for several species of Illinois stream fish that inhabit a small but

significant proportion of Illinois streams . Because USEPA (1986) ` warmwater" criteria are

based on information for only a few tested "warmwater" fish species, they are limited to being

protective only of fishes as sensitive as channel catfish (early life stages) or largemouth bass

(other life stages) . For Illinois waters, this limitation must be addressed and accounted for

.

Over 160 fish species are known to inhabit Illinois streams (Smith 1979 ; Illinois Natural History

Survey internet website : www.inks.uiuc.edu/cbd/ilspecies/fishsplist.html) ; for a large majority of

these species, absolute sensitivity to low dissolved oxygen remains unknown . As explained

below, some Illinois stream-fish species have sensitivity between "coldwater" species (e.g., trout,

salmon) and the two species that represent the threshold of protection provided by USEPA's

(1986) "warmwater" criteria . For example, smalimouth bass inhabit Illinois streams and have

been noted by

USEPA (1986) as one of the most sensitive of the non-salmonid species tested .

Because some Illinois fishes have sensitivity between that of salmonids and that of largemouth

bass or channel catfish, it is reasonable to expect that some Illinois waters inhabited by these

"intermediate" species would require dissolved oxygen standards higher than the USEPA (1986)

10

---

"warmwater" criteria but not as high as the "coldwater" criteria

. USEPA (1986) clearly

recognizes this potential need

. "Some coolwater species may require more protection than that

afforded by the other life stage criteria for warmwater fish and it may be desirable to protect

sensitive coolwater species with the coldwater criteria . Many states have more stringent

dissolved oxygen standards for cooler waters, waters that contain either salmonids, nonsalmonid

coolwater fsh, or the sensitive centrarchid, the smallmouth bass" (p . 33) .

Illinois DNR and Illinois EPA identify 31

Illinois stream-fish species that require dissolved

oxygen minima higher than the USEPA "warmwater" criteria (Table 2) . This selection of

sensitive fish species is based primarily on field-based rankings of species' sensitivities to low

dissolved oxygen (Rankin 2004)

. Rankin (2004) used field data of about 90 fish species

collected from hundreds of stream locations in Ohio to determine a relative ranking of sensitivity

for each species

. The rankings are based on relations between observed dissolved oxygen

concentrations and the relative abundance of each fish species . These rankings provide useful

"real-world" evidence of how the occurrence and abundance of fish at a site are related to

dissolved oxygen concentrations

. Because these relations are correlative, they do not provide

absolute evidence that low dissolved oxygen caused low observed abundance

. Nevertheless,

considering the limited information available on specific sensitivities of each of Illinois' many

stream-fish species, Illinois DNR and Illinois EPA believe that Rankin's (2004) results pertain

especially well to Illinois because over 80 of the Ohio fish species also inhabit Illinois streams

.

Rankin (2004) used weighted (by abundance) means of minimum dissolved oxygen

concentrations to rank each fish species according to its relative sensitivity to low dissolved

11

---

oxygen. For each species, the weighted mean represents the typical daylight minimum dissolved

oxygen concentration where the species tends to be most abundant

. Rankin cautions against

using these numeric values directly

; rather, he advises that the relative rankings of the fish

species are much more useful (personal communication on January 31, 2006 between Edward T

.

Rankin, Senior Research Associate, Center for Applied Bioassessment and Biocriteria,

Columbus, Ohio

; and Roy Smogor, Illinois Environmental Protection Agency, Springfield,

Illinois)

. Using the relative dissolved oxygen sensitivities in Rankin (2004), Illinois DNR and

Illinois EPA selected rock bass as a benchmark species

. Namely, all species ranked as equally or

more sensitive than rock bass were considered as candidates for a list of Illinois fish species that

are more sensitive to low dissolved oxygen than channel catfish and largemouth bass and thus

require dissolved oxygen minima higher than the USEPA (1986) "warmwater" criteria

. Rankin

(2004) indicates that rock bass are more sensitive to low dissolved oxygen than both channel

catfish and largemouth bass

. Illinois DNR fisheries biologists selected rock bass as the

benchmark species because of its affinity to transitional warm/cool waters

.

Of 35 Illinois candidate species indicated in Rankin (2004) as equally or more sensitive than

rock bass, eleven were not selected for the list of Illinois sensitive species

. Based on their

experience with these fishes in Illinois streams, Illinois DNR fisheries biologists believe that

these excluded species are not especially sensitive to low dissolved oxygen, relative to the other

species considered

.

One species (i.e.,

brook stickleback) indicated in Rankin (2004) as less sensitive than rock bass,

is included in the list of sensitive Illinois fishes

. Additionally, five species not addressed in

12

---

Rankin (2004) (i.e.,

northern brook lamprey, banded sculpin, longnose dace, Ozark minnow, and

Iowa darter) were added to the list of sensitive fish species in Illinois

. These six species are

included based on their affinities to cool, well-oxygenated waters

. USEPA (1986) acknowledges

that

"there is apparently enough anecdotal information to suggest that many coolwater species

are more sensitive to dissolved oxygen depletion than are warmwater species" (p

. 2) and

therefore need incrementally higher protection for dissolved oxygen

.

13

---

Table 2 . Illinois stream fishes most sensitive to low dissolved oxygen .

14

Common Name

Scientific Name

Family

American brook lamprey

Lampetra appendix

Petromyzontidae

Northern brook lamprey

Ichthyomyzonfossor

Petromyzontidae

Black redhorse

Moxostoma duquesnei

Catostomidae

Northern hog sucker

Hypentelium nigricans

Catostomidae

Silver redhorse

Moxostoma anisurum

Catostomidae

Rock bass

Ambloplites rupestris

Centrarchidae

Smallmouth bass

Micropterus dolomieu

Centrarchidae

Spotted bass

Micropterus punctulatus

Centrarchidae

Banded sculpin

Coitus carolinae

Cottidae

Mottled sculpin

Cottus bairdi

Cottidae

Bigeye chub

Hybopsis amblops

Cyprinidae

Bigmouth shiner

Notropis dorsalis

Cyprinidae

Blacknose dace

Rhinichthys atratulus

Cyprinidae

Common shiner

Luxilius cornutus

Cyprinidae

Gravelchub

Erimystax x punctatus

Cyprinidae

Hornyhead chub

Nocomis biguttatus

Cyprinidae

Longnose dace

Rhinichthys cataractae

Cyprinidae

Ozark minnow

Notropis nubilus

Cyprinidae

River chub

Nocomis micropogon

Cyprinidae

Rosyface shiner

Notropis rubellus

Cyprinidae

Southern redbelly dace

Phoxinus erythrogaster

Cyprinidae

Steelcolor shiner

Cyprinella whipplei

Cyprinidae

Brook stickleback

Culaea inconstans

Gasterosteidae

Brindled madtom

Noturus miurus

Ictaluridae

Stonecat

Noturus flavus

Ictaluridae

Banded darter

Etheostoma zonale

Percidae

Fantail darter

Etheostoma flabellare

Percidae

Greenside darter

Etheostoma blennioides

Percidae

Iowa darter

Etheostoma exile

Percidae

Rainbow darter

Etheostoma caeruleum

Percidae

Slenderhead darter

Percina phoxocephala

Percidae

---

Differences in dissolved oxygen requirements among types of Illinois stream

macroinvertebrates (e.g.,

insects, crayfish, worms, snails, mussels)

Similar to the situation for Illinois fishes, although USEPA's (1986) "warmwater" dissolved

oxygen criteria are appropriate for the large majority of Illinois waters, they provide insufficient

protection for several types of aquatic macroinvertebrates that inhabit a small but significant

proportion of Illinois streams

. In developing their criteria, USEPA (1986) relied primarily on

only two studies of relatively few types of insects from streams in Montana, Utah, and

Minnesota

. A recent summary of the scientific literature on the sensitivity of stream

macroinvertbrates to low dissolved oxygen indicates that specific information remains very

limited (Connolly et al . 2004)

. This relative lack of information is surprising given the

longstanding, widespread recognition of macroinvertebrates as useful indicators of deleterious

human impacts on dissolved oxygen levels in surface waters (Connolly et al

. 2004)

.

Recognizing these limitations, USEPA (1986) qualified their recommendations accordingly

.

"Few appropriate data are available on the effects of reduced dissolved oxygen on freshwater

invertebrates

. However, historical consensus states that, if all life stages offish are protected,

the invertebrate communities, although not necessarily unchanged, should be adequately

protected

. This is a generalization to which there maybe exceptions of environmental

significance

. Acutely lethal concentrations of dissolved oxygen appear to be higher for many

aquatic insects than for fish"

(USEPA 1986, p . 29).

Despite the predominance of fish-based thresholds in the USEPA (1986) dissolved oxygen

criteria, one part of these criteria clearly recognizes greater sensitivity of some

15

---

macroinvertebrates compared to fish

. Namely, the "coldwater" daily minimum is designed

specifically to protect sensitive macroinvertebrates (4 .0 mg/l

; Table 1, column 5) . "Although the

acute lethal limit for salmonids is at or below 3 mg/1, the coldwater minimum has been

established at 4 mg/1 because a significant proportion of the insect species common to salmonid

habitats are less tolerant of acute exposures to low dissolved oxygen than are salmonids"

(USEPA 1986, p . 33)

. As explained below, some Illinois macroinvertebrates are as sensitive to

low dissolved oxygen as those on which this USEPA

(1986) "coldwater" threshold was based ;

therefore, a daily minimum of 4

.0 mg/1 is appropriate for Illinois waters inhabited by these types .

Illinois DNR and Illinois EPA considered various information on the dissolved oxygen

sensitivities of Illinois stream macroinvertebrates

. A "macroinvertebrate" is defined

as any

invertebrate of a body size that would prevent it from passing through a sieve with mesh size of

595 µm (i

.e., U.S . Standard No .30)

. Typical Illinois stream macroinvertebrates include insects,

crayfish, scuds, sowbugs, worms, leeches, flatworms, snails, and mussels

.

Mussels are addressed

separately later in this document

.

Illinois DNR and Illinois EPA used the Illinois EPA Macroinvertebrate Tolerance List to

determine relative sensitivity, to low dissolved oxygen, of Illinois stream macroinvertebrates

(excluding mussels)

. This tolerance list reflects a long history of working with

macroinvertebrates in Illinois to evaluate the effects and extent of organic pollution

. The Illinois

Department of Public Health began classifying macroinvertebrates found in Illinois streams

relative to their tolerance to organic wastes in the

1950s .

Macroinvertebrates were placed in one

of three categories

: tolerant, various, or intolerant, based on the stream conditions where they

16

---

occurred

. The composition of the macroinvertebrate community was then used to determine

whether or not a water was polluted

. Macroinvertebrates classified as intolerant were considered

to require "

. . .ideal conditions in respect to dissolved oxygen, biochemical oxygen demand

. . . " (p.

I in "A Method of Cataloging Stream Bottom Organisms in Respect to Their Pollutional

Tolerance" by Robert H . Shiffman, Illinois Department of Public Health,

1954) . Weber

(1973)

went on to define intolerant macroinvertebrates as,

"Organisms that are not found in association

with even moderate levels of organic contaminants and are generally intolerant of even

moderate reductions in dissolved oxygen" (p

. 18) . In Wisconsin, Hilsenhoff (1977) began

assigning numeric values of tolerance to organic pollution to macroinvertebrates

. A "biotic

index" was then calculated reflecting the weighted average of tolerance values at a stream site

.

Hilsenhoff (1977)

found that of nine physicochemical variables tested, dissolved oxygen had the

most significant correlation with the macroinvertebrate biotic index that was based on tolerance

values.

The Illinois EPA Macroinvertebrate Tolerance List currently reflects the system utilized by

Hilsenhoff. Pollution tolerance ratings of macroinvertebrates on the list range from 0 to 11

; with

a rating of zero assigned to taxa found only in unaltered streams of high water quality, and a

rating of 11 assigned to taxa known to occur in severely polluted or digturbed streams

.

Intermediate ratings are assigned based on an organism's relative degree of tolerance or

intolerance to pollution

. Although information on the relative tolerance of an organism to other

pollutants such as metals toxicity or pH are considered, organic pollution remains the foundation

of the rating . The Illinois EPA Macroinvertebrate Tolerance List does not indicate acute or

17

---

chronic toxicity, but does provide a relative ranking of macroinvertebrate sensitivity to primarily

dissolved oxygen .

Some types of Illinois macroinvertebrates require dissolved oxygen minima higher than the

"warmwater" criteria proposed by USEPA. USEPA (1986

; Table 6, p. 22) includes three

macroinvertebrate taxa found in Illinois that require 3

.5 mg/1 dissolved oxygen or higher to

survive : Baetisca laurentina, Hydropsyche

sp., and Neophylax sp. Additionally, Connolly et . al

.

(2004) found sub-lethal effects on mayflies (order Ephemeroptera) when dissolved oxygen was

in the 25-35% saturation range, which translates to a dissolved oxygen concentration of about 3

.0

mg/1 at the temperatures studied

. The sub-lethal effects were related to the failure of some

mayflies to emerge into the adult stage

; thus, dissolved oxygen concentrations that drop to 3 .0

mg/l could potentially hamper the sustainability of mayfly populations

. Based on this

information, Illinois DNR and Illinois EPA believe that some Illinois macroinvertebrate taxa

require higher dissolved oxygen minima than the USEPA "warmwater" criteria

.

However, given the large number and variety of macroinvertebrates in Illinois and the limited

references in the literature to specific dissolved oxygen requirements to specific taxa, identifying

individual taxa that might require higher dissolved oxygen than the "warmwater" criteria is

problematic

. Consensus of Illinois EPA biologists was that macroinvertebrates with tolerance

ratings less than or equal to 3

.5 would require dissolved oxygen concentrations higher than the

"warmwater" criteria (note the tolerance rating does not correspond to a dissolved oxygen

concentration)

.

18

---

Illinois DNR and Illinois EPA identify 83 macroinvertebrate taxa that have tolerance ratings of

3

.5 or less (Table 3)

. An initial list of dissolved oxygen sensitive taxa was generated by

querying the Illinois EPA BIOS database for taxa with a tolerance equal to or less than 3 .5 . The

initial screening list of sensitive macroinvertebrate taxa (n = 165) was distributed and reviewed

by Illinois EPA biologists and Illinois DNR staff . Mussels (family Unionidae) were excluded

from the initial list since they are collected sporadically and were being evaluated separately by

Illinois DNR staff. Taxa identified at the family level were then eliminated as being too general,

as were a few Dipteran taxa that had limited distributions and occurred primarily at degraded

sites. The final list of taxa was based on those found in Illinois EPA macroinvertebrate samples

collected from wadable streams between 2001 and 2004 (n = 399 samples) . Table 3 shows the

sensitive macroinvertebrate taxa that actually occurred in the samples used . This list does not

represent all Illinois taxa with tolerance ratings of 3 .5 or less ; rather, it only includes the ones

most likely to be collected during Illinois EPA's annual sampling period, June 1 through October

15

. Some Illinois sensitive taxa are not well represented in the list, e.g., several stonefly taxa

(order Plecoptera), because their life cycles do not correspond with the presence of life stages

amenable to capture during late spring to early autumn .

Like other aquatic macroinvertebrates, mussel species vary in their sensitivity to dissolved

oxygen

. Based on the limited available scientific information, Illinois DNR identifies two

species, the Rainbow (Villosa iris) and the Elephantear (Elliptio crassidens)

as especially

sensitive to low dissolved oxygen and thus requiring minima higher than the USEPA (1986)

"warmwater" criteria . Two studies directly address dissolved oxygen sensitivity of these two

species (Chen et al. 2001 ; Johnson et al . 2001). Chen et al

. (2001) found that "Villosairis [and

19

---

one other species] .. .,

which generally live in well oxygenated stream and river riffles

. . . exhibited

the poorest ability to regulate OC [oxygen consumption]

under conditions of low oxygen

availability" (p . 212)

. The authors also state, ". . .for .V iris, DO [dissolved oxygen]

should

probably be higher than 6 mg 1 -1 [mg/1]

to ensure that aerobic metabolism remains relatively

unchanged" (p . 214) .

Dissolved oxygen requirements of Elliptio crassidens

were investigated by

Johnson et al . (2001),

who report that this mussel species had one of the highest mortality rates

(82%)

of the species studied when exposed to dissolved oxygen concentrations below 5 mg/l

.

20

---

Table 3 . Illinois macroinvertebrates most sensitive to low dissolved oxygen

(i.e.,

tolerance

rating < 3 .5) and occurring in Illinois EPA stream collections in 2001 through 2004

. Mussels are

excluded . The abbreviation "sp."

means unspecified species .

21

Scientific Name

Tolerance

Rating

Scientific Name

(cont .)

Tolerance

Rating

(cont .)

Scientific Name

(cont .)

Tolerance

Rating

(cont .)

Amphipoda

Hetaerina

sp.

3

Glossosoma sp.

3 .5

Gammarus sp .

3

Hetaerina americana

3

Helicopsyche borealis

2

Gammarus fasciatus

3

Hetaerina

titia

3

Hydroptila sp.

2

Gammarus pseudolimnaeus

3

Macromia

sp .

3

Nectopsyche sp .

3

Macromia

illinoiensis

3

Nectopsyche candida

3

Ephemeroptera (mayflies)

Macromia taeniolata

3

Nectopsyche diarina

3

Baetis tricaudatus

Erpetogomphus sp.

2

Nectopsyche exquisita

3

Baetisca bajkovi

Nasiaeschnapentacantha

2

Neureclipsis sp .

3

Baetisca sp.

Neurocordulia sp .

3

Nyctiophylax sp .

1

Brachycercus sp .

Neurocordulia molesta

3

Polycentropus sp

.

3

Centroptilum sp.

Ophiogomphus sp

.

2

Ptilostomis sp .

3

Choroterpes sp.

Plauditus

sp.

3

Pycnopsychesp .

3

Ephemera simulans

Somatochlora sp.

1

Triaenodes sp.

3

Ephoron sp.

Ephoron album

Ephoron leukon

Plecoptera (stoneflies)

Acroneuria sp.

1

Coleoptera (beetles)

Heptagenia favescens

Neoperla sp .

1

Ancyronyx variegata

2

Heptagenia hebe

Pteronarcys sp

.

2

Macronychus glabratus

2

Heptagenia perfida

Isonychia sp .

Leucrocuta sp.

Megaloptera

Corydalus cornutus

3

Diptera (flies)

Corynoneura sp.

2

Leucrocuta hebe

Nigronia sp.

2

Limonia sp.

3

Leucrocuta maculipennis

Nigronia serricornis

2

Meropelopia

sp.

3

Nixe sp .

Nilothauma sp.

3

Nixe perf da

Neuroptera

Paratendipes sp.

3

Paraleptophlebia sp.

Sisyra

sp.

1

Pentaneura sp .

3

Stenonema ares

Reopelopia sp.

3

Stenonema mediopunctatum

Trichoptera (caddisflies)

Robackia sp

.

3

Stenonema pulchellum

Agraylea sp.

2

Stempellina sp.

2

Brachycentrus numerosus

1

Stempellinella sp .

2

Odonata (dragon/damsel)

Ceraclea sp .

3

Stenochironomus sp.

3

Basiaeschnajanata

2

Ceraclea maculata

3

Thienemaniella sp .

2

Boyeria sp .

3

Chimarra sp

.

3

Thienemaniella xena

2

Boyeria vinosa

3

Chimarra obscura

3

---

Difficulties in interpreting critical thresholds of dissolved oxygen for aquatic

life

Difficulties exist in determining meaningful thresholds to serve as ambient water-quality

standards for dissolved oxygen . To account for these difficulties, Illinois DNR and Illinois EPA

focus on relative rankings-rather than reported numeric thresholds-of dissolved oxygen

sensitivity as the most valid and useful approach to determine which types of Illinois fish or

macroinvertebrates require dissolved oxygen minima higher than the USEPA (1986)

"warmwater" criteria . For fish, Illinois DNR and Illinois EPA rely primarily on field-based

relations between dissolved oxygen and fish abundance (Rankin 2004) because traditional

experimental information on dissolved oxygen sensitivity is lacking for many Illinois fish

species . Moreover, particularly for non-toxic substances like dissolved oxygen, sole reliance on

laboratory-based acute thresholds is not recommended . For example, in a laboratory-based study

of stream-fish species' acute sensitivities to low dissolved oxygen, Smale and Rabeni (1995)

caution,

"Considerable differences have been found between laboratory tolerance values and

lethal conditions in natural situations (Moore 1942 ; Davis 1975). It may not be appropriate to

use laboratory measurements to predict specific, numerical values of either hypoxia or

'hyperthermia that would be lethal to fish in the wild" (p .

699)

. Other scientists have long

recognized this difficulty in applying laboratory-based thresholds of low dissolved oxygen as

water-quality standards intended to protect fish in their natural habitats (Aquatic Life Advisory

Committee of the Ohio River Valley Water Sanitation Commission 1956 ; Davis et al . 1979;

USEPA 1986). Smale and Rabeni (1995) further state, "The complexity

ofenvironmental

challenges faced by fish in natural situations does not inspire confidence in the applicability of

22

---

apparently simplistic and reductionist laboratory tolerance data

. .

. However, even laboratory

measurements that are too simplistic to precisely predict absolute values

oftemperature or

dissolved oxygen levels that are limiting to fish in natural environments may still be used in a

relative manner to distinguish tolerant from sensitive species" (p

. 711) . These caveats also

pertain to analogous macroinvertebrate studies (e.g.,

Davis 1975 ; USEPA 1986 ;

Connolly et al .

2004). USEPA's

(1986)

national-criteria document for dissolved oxygen carefully considers

some of these potential shortcomings

. Illinois DNR's and Illinois EPA's approach accounts for

these concerns in light of similar cautions and suggestions in later studies

.

Different life stages of Illinois fishes require different dissolved oxygen

standards

The USEPA (1986)

national criteria for dissolved oxygen recommendations are clear in the need

to protect for early life stages of fish

. The existing Illinois water quality standards for dissolved

oxygen were adopted years prior to the USEPA

1986

national criteria, and therefore, do not

specifically address these early life stages through a defined sensitive season

. USEPA

(1986)

defines early life stages as,

"Includes all embryonic and larval stages and juvenile forms to 30-

days following hatching" (p . 34) .

Available science behind fish spawning and fry development is essential data that must be

studied to properly decide the most appropriate date in Illinois

. It must be further recognized

that other varying factors in any given year (weather conditions, stream flow and temperature,

23

---

etc.),

will have significant local influence on spawning periods of Illinois stream fishes

.

Illinois DNR and Illinois EPA recommend July 31 as the date separating the "early life stage

present" from the "early life stage absent" periods

. This is in contrast to the IAWA's

recommended date of June 30.

In supporting IA WA's petition, Dr

. Garvey provided summaries of some of the scientific data

behind fish spawning and fry development in Illinois

. Dr

. Garvey further discusses spawning

strategies in Illinois fish (see Exhibit #8,

Protracted Spawning in Stream Fishes

-Implications for

Proposed Dissolved Oxygen Standards)

. Dr

. Garvey concludes that whatever spawning occurs

toward the end of the spawning period (in many cases these are the months of July and August)

is largely unimportant to the well being of the species

. He lists a number of factors that

contribute to the low survival of late-spawned individuals including predation and lack of fitness

for winter survival

.

Fisheries scientists and natural-resource managers in Illinois DNR and Illinois EPA partially

agree with Dr

. Garvey's explanation of the relative insignificance of late spawning to the overall

well being of fish species, as long as that date ensures the critical spawning periods have passed

and the frequency of spawning failures early in the spawning period do not change from typical

natural conditions

. In years when early season spawning is not successful for any number of

environmental reasons, the "late" season spawning activity may provide the only individuals

recruited to the population in that year

. Thus, the relative importance of the late season spawned

fish in some years is much greater than in typical years when the majority of recruitment comes

24

---

from the early season spawned individuals .

Many of the fish species evaluated by Dr . Garvey are spring spawners

. Illinois DNR and Illinois

EPA fisheries scientists and resource managers believe that additional science and data for late

spring and summer spawners are of critical interest when setting the cut-off date

. Therefore,

available literature for Illinois fishes that spawn in either late spring or primarily in summer has

been further investigated

.

Species considered to be late spring spawners

(i.e., those that may spawn into late June) include

channel catfish and smallmouth bass

; these two species are important for recreational fishing in

Illinois

. Simon and Wallus (2003) stated that for channel catfish

"yolk-sac larvae and early

juveniles were collected mid-May through August with peaks in June and July in the Tennessee

and lower Ohio Rivers" (p . 100).

First-hand knowledge and field observations by Illinois DNR

resource managers support Simon and Wallus (2003) conclusions

. Additionally for smallmouth

bass, spawning periods have been documented by Michigan DNR (2004) between late April and

early July in Michigan

. Simonson (2001) reports similar spawning periods from mid-May

through June for smallmouth bass in Wisconsin

. In Illinois, smallmouth bass spawn from mid-

April through late June with the main spawning period in June (Smith 1979

; Sallee et al . 1991).

First-hand knowledge and field observations by Illinois DNR resource managers in northern

Illinois streams support the spawning period findings of both Michigan DNR (2004) and

Simonson (2001) .

Illinois DNR and Illinois EPA relied on published text of the natural history of fishes from

25

---

Illinois (Smith 1979), Missouri (Pflieger 1997), Virginia (Jenkins and Burkhead 1994),

Tennessee (Etnier and Starves 1993), Wisconsin (Becker 1983) and Arkansas (Robison and

Buchanan 1988) to identify fish with summer spawning periods

. These data sources were used

for species that are common to Illinois

. A summary of the range of spawning periods compiled

from these works is provided in Table 4

. It is significant to note that two of the fish species with

summer spawning periods, bigmouth shiner

(Notropis dorsalis)

and stonecat (Noturus flavus),

have been identified by Illinois DNR and Illinois EPA fisheries scientists and resource managers

as more-sensitive to low dissolved oxygen than most other Illinois stream-fish species

.

Spawning periods identified in Table 4 represent only the time of deposition and fertilization of

eggs, and do not include the period of other early life stages of embryonic and fry development .

The July 31 date recommended by Illinois DNR and Illinois EPA is highlighted in Table 4

. In

general, by July 31, all late spawning fish species will have a substantial majority of their

spawning and fry development into dates when higher dissolved oxygen standards will be in

effect

. Even though some larvae will be present into August, Illinois fisheries managers believe

the July 31 date should not be detrimental to the overall recruitment of a year class for fish

species.

Based on the literature presented for late spring spawnings, summer spawners, and those fish

species such as madtoms that can spawn over a wide period, Illinois DNR and Illinois EPA

fisheries scientists and resource managers have concluded that an additional 30-day period is

necessary to include the "summer spawners" and to protect early life stages of Illinois fish

.

While the IAWA proposed date of June 30 protects the majority of "spring" spawns, it neglects

to include the spawning period of the "summer" spawners, and neglects to include a 30-day

26

---

period for protection of post-hatch embryonic and yolk-sac fry development

. Illinois DNR and

Illinois EPA fisheries scientists and resource managers judge that the proposed date of July 31

adequately protects fish eggs and fry and therefore demarcates the two most appropriate periods

for dissolved oxygen water quality standards .

27

---

Table 4. Spawning periods of some Illinois stream fishes

. Shaded lines represent spawning period of each species

. "Spawning period" is the time

of deposition and fertilization of eggs

. "Spawning time" does not include the period of embryonic development and later

. Vertical dark line at July

31 indicates the end of the early life stage'period,

as

recommended by Illinois DNR and Illinois EPA

. Spawning period is based on information in

the following texts

: Smith (1979), Becker (1983), Robison and Buchanan (1988), Etnier and Statues (1993), Jenkins and Burkhead (1994), and

Pflieger (1997) .

Fish

Name

MarOl-15 Marl6-31 AprOl-15 Apr16-30 MayOl-15 May16-31

JunOl-15 Junl6-30 Ju101-15

Ju116-31

AugOl-15

Augl6-3 Sep01-15

Minnow Family

golden shiner

largescale stoneroller

speckled chub

central silvery minnow

lams minnow

assy minnow

cypress minnow

Sepl6-30

28

---

ibbon shiner

spotfin shiner

. ed shiner

pugnose minnow

.ugnose shiner

emerald shiner

ironcolor shiner

,igmouth shiner

Fish

Name MarOl-15

Mar16-31 Apr01-15 Apr16-30

striped shiner

common shiner

M 01-15 Ma 16-31Jun01-15

Jun16-30 Ju101-15 JuI16-31 AugOl-15 Aug16-31

Se 01-15 S 16 30

29

---

taillight shiner

eed shiner

bigeye chub

Sucker Family

ber carpsucker

ghfin carpsucker

quillback

Catfish Family

channel catfish

flathead catfish

stonecat

tadpole madtom

eckled madtom

slender madtom

orthern madtom

Fish Name

Mar01- 5 Ma-16-31

A .r01-15 A .r16-30 Ma 01-15

Ma 16-3 J n01-15 Jun16-30 Ju101-15 Ju116-31

Au-01-15 Au-16-31 Se .01-15 Se-16-30-

Sunfish & Bass Family

armouth

green sunfish

bluegill

ongear sunfish

orangespotted sunfish

.umpkinseed

Killifishes,Topminnows,

Mosquitofish, & Silversides

anded killifish

30

---

Fish Name

AprOl-15

MayOl-15

Ma 16-31 JunOl-15 Jun16-30

Ju101-15 Ju116-31 Au 01-15

northern studfish

starhead topminnow

blackstripe topminnow

blackspotted topminnow

mosquitofish

brook silverside

inland silverside

Perch & Darter Family

western sand darter

MarOl-15 Mar16-31

Apr16-30

Sepal-15

Sept 6-30

I

31

---

Natural variability of dissolved oxygen through time and across locations in

Illinois requires practical application of standards

Like USEPA (1986) criteria, the dissolved oxygen standards recommended by Illinois DNR and

Illinois EPA (Table 1, columns 6 - 9) include absolute, instantaneous thresholds called "daily

minima". This type of acute water-quality standard reflects an unrealistic, idealized expectation .

In reality, under some natural conditions, dissolved oxygen concentrations are likely to drop to

levels normally expected to be acutely harmful to aquatic life

. In surface waters, dissolved

oxygen concentrations are influenced directly or indirectly by numerous interacting

environmental factors, including temperature, atmospheric pressure, light intensity, ice cover,

water clarity, and photosynthesis and respiration of plants and animals

. Particular combinations

of these factors can result in low dissolved oxygen levels unrelated to human impacts . For

example, during summer and autumn, stratification in lakes or low flow in streams can result in

dissolved oxygen depression (Hynes 1970)

. As reflected in the thresholds in Table 1, acute or

chronic differences as small as 0 .5 to 1 .0 mg/I in dissolved oxygen concentration represent

meaningful differences in potential effects on aquatic life . Such small critical differences

coupled with relatively high natural variability confound the ability to select dissolved oxygen

thresholds (i.e., water quality standards) that can consistently distinguish deleterious human

impacts from natural influences on aquatic life . Developers of water-quality standards for

dissolved oxygen widely recognize this difficulty (Aquatic Life Advisory Committee of the Ohio

River Valley Water Sanitation Commission 1955 ; Davis 1975 ; Davis et al

. 1979

; USEPA 1986;

Truelson 1997) . USEPA (1986) states,

"Naturally-occurring dissolved oxygen concentrations

may occasionally fall below target criteria levels due to a combi ation of low flow, high

32

---

temperature, and natural oxygen demand

.

.

. Under these circumstances the numerical criteria

should be considered unattainable, but naturally-occurring conditions which fail to meet criteria

should not be interpreted as violations of criteria

. Although further reductions in dissolved

oxygen may be inadvisable, effects of any reductions should be compared to natural ambient

conditions and

not to ideal conditions" (p. 28 ;

emphasis added).

To be useful, Illinois dissolved oxygen standards must accommodate the reality of how dissolved

oxygen naturally varies through time and across locations in Illinois

. Illinois DNR and Illinois

EPA recommend an additional narrative part of the dissolved oxygen standards that addresses

these issues

. Specifically, Illinois DNR and Illinois EPA recommend that

:

General Use waters at all locations shall maintain sufficient dissolved oxygen concentrations to

prevent offensive conditions . . ..

escent and isolated sectors of General Use waters including

but not limited to wetlands, sloughs, backwaters and lakes and reservoirs below the thermocline

shall be maintained at sufficient dissolved oxygen concentrations to support their natural

ecological functions and resident aquatic communities

(See Toby Frevert Pre-filed Testimony,

Attachment 1) .

7

Which Illinois streams have a meaningful amount of sensitive organisms and

thus require enhanced protection for dissolved oxygen?

Identify specific stream sites in Illinois that have a meaningful amount of sensitive

organisms

33

---

Fish Dataset: Fish-community samples collected with various sampling gears in 1994 through

2005 by Illinois DNR were used . Fish data from the large rivers (i .e., Mississippi, Illinois,

Wabash, and Ohio) were analyzed separately

. Data from 1028 stations, including 98 large-river

locations, were included in the analysis . Because a site may have been sampled multiple times

for fish during the evaluation time frame, proportion of individuals and number of species from

each sample were averaged to provide a single value for each biological measure for each site .

Macroinvertebrate Dataset (except mussels)

: Macroinvertebrate-community samples collected in

2001 through 2004 and available in the Illinois EPA BIOS database were used . Data from 380

stations were included in the analysis. Samples used were limited to those collected from

wadable streams via Illinois EPA's recently incorporated "20 jab method" . Before 2001, Illinois

EPA collected stream-macroinvertebrate samples via a different method that precludes valid

among-sample comparisons of proportional abundances, for example, the proportion of

individuals identified as most sensitive to low dissolved oxygen . Differences between past and

present collection methods also preclude combining data when determining the number of

sensitive taxa per site because each method selectively collects different macroinvertebrate taxa

.

Mussel Dataset

: Mussel data compiled by the Illinois Natural History Survey from 1980 through

2005 were used . Species examined included Elliptio crassidens

and those identified by Illinois

DNR mussel experts as intolerant and riffle-dwelling

. Data were collected through field

collections including hand picking, brailing, and diving, as well as museum records . Locations

were limited to include only presence of live mussels .

34

---

Of the 1110 sites evaluated, 329 had both fish and macroinvertebrate data

; 699 sites had fish data

only and 82 sites had macroinvertebrate data only

.

Illinois DNR and Illinois EPA selected four biological measures by which to characterize each

stream site

: the number of sensitive fish species (see Table 2), the proportion of individual fish

that are sensitive, the number of sensitive macroinvertebrate taxa (see Table 3), and the

proportion of individual macroinvertebrates that are sensitive

. Because available mussel data did

not comprise community assessments, number of sensitive species and proportion of sensitive

individuals could not be calculated .

Illinois DNR and Illinois EPA selected threshold values that represent the number of sensitive

species/taxa and the proportional abundance of sensitive individuals typical of healthy streams

.

Threshold values for each of the four biological measures (Table 5) were determined by

calculating the median value from sampling sites that were identified as attaining the Clean

Water Act goal for aquatic life, referred to

as full support

. The calculation of the median was

limited to full support waters in an attempt to limit the influence of environmental stresses,

including habitat and chemicals

. In large rivers, full support sites were chosen only from sites

that fell on the main channel

(i.e.,

not backwaters or side channels)

. The number of full support

sites used to calculate threshold values varied from 45 sites in large rivers

(i.e.,

Mississippi,

Illinois, Wabash, and Ohio) to 368 sites for fish in streams and non-large rivers, with 246 full-

support sites for macroinvertebrates .

35

---

For each site, values for each of the four biological measures were compared to established

threshold values

. Sites were selected as having a meaningful amount of sensitive organisms if at

least two of the four biological measures considered equaled or exceeded the established

threshold value for that measure

. Sites that had fish-only or macroinvertebrate-only data were

eligible for selection if they met or exceeded both thresholds for the available taxonomic group

.

Table 5

. Threshold values for each biological measure used to determine a meaningful

amount of sensitive organisms

.

Percent as Sensitive

Number of Sensitive Taxa

Because of differences in the methods used to collect mussels vs

. other macroinvertebrates in

Illinois streams, the site-specific information available for mussels is not directly comparable

.

Consequently, the thresholds in Table 5 do not apply to the mussel information

. Rather, any site

known to be inhabited by at least one of the two dissolved oxygen-sensitive mussel species

(i.e.,

Villosa

iris and Elliptio crassidens)

was considered to have a meaningful amount of sensitive

organisms .

In summary, the analysis identified 374 stream sites that have a meaningful amount of sensitive

organisms (Figure 2) .

36

Individuals

Fish

- Large Rivers

2.63

2

Fish - Streams/non-large rivers

9.3

4

Macroinvertebrates

6.25

5

---

Stream site that has a meaningful

amount of sensitive organisms

o

Stream site that lacks a meaningful

amount of sensitive organisms

L-1

Counties

Figure 2

. Stream sites from which fish, macroinvertebrate, or both types of information were

used to determine locations that have meaningful amounts of dissolved oxygen-sensitive

organisms.

37

---

Extrapolate site-based results to identify Illinois stream segments that require enhanced

dissolved oxygen protection

Based on the widely documented knowledge that the physical and chemical properties of the

water at a stream site reflect upstream influences (e.g., Omemik et al . 1981 ; Smart et al . 1981 ;

Hunsaker and Levine 1995

; but see Allan and Johnson 1997), Illinois DNR and Illinois EPA

believee that the presence of a meaningful amount of sensitive organisms at a site reflects the need

for enhanced dissolved oxygen protection at the site as well as upstream of the site

.

Unfortunately, Illinois DNR and Illinois EPA know of no criteria that can identify definitively

the upstream extent of influence on dissolved oxygen for each site of concern ; therefore, some

simple, practical constraints for extrapolating from site-specific information to upstream stream

segments were used

. Specifically, the map-based information listed below was used to identify

stream segments expected to have meaningful amounts of sensitive organisms and therefore

requiring enhanced dissolved oxygen standards, i .e., minima higher than the USEPA (1986)

"warmwater" criteria.

Illinois DNR and Illinois EPA primarily used four pieces of information referenced to or

depicted 4s computer-mapped information throughout Illinois :

1) set of stream sites at which fish or macroinvertebrate samples indicate occurrence of a

meaningful amount of sensitive organisms (Figure 2) ;

2) set of stream sites at which fish or macroinvertebrate samples indicate lack of

a meaningful amount of sensitive organisms (Figure 2) ;

3) Illinois streams that are part of the National Hydrography Dataset (1 :100,000 map

38

---

scale). This dataset is a

"comprehensive set of digital spatial data that contains

information about surface water features such as lakes, ponds, streams, rivers,

springs and wells" (internet website : //nhd.usgs .gov/).

This dataset is

sponsored by the U. S . Geological Survey and the U. S

. Environmental Protection

Agency;

4) U.S. Geological Survey 7.5-minute

topographic maps (map scale 1 :24,000) for Illinois.

Figure 3 highlights the process for selecting stream segments for enhanced dissolved oxygen

protection

. These highlights do not apply to segments in the largest Illinois streams : Illinois

River, Mississippi River, Ohio River, and Wabash River, which are addressed later in this

section

. First, proceeding upstream, any stream segment collocated with a site that has a

meaningful amount of sensitive organisms was selected for enhanced protection

. Second, for

stream segments not collocated with, but upstream of, a site that has a meaningful amount of

sensitive organisms, the segment was selected for enhanced protection only if all of these criteria

applied:

1) The nearest downstream site that has sufficient biological information has a meaningful

amount of sensitive organisms .

2) The nearest downstream site that has sufficient biological information is not a large-river site

(see above). Illinois DNR and Illinois EPA judge that selecting all stream segments that

occur upstream of a large-river site that has a meaningful amount of sensitive organisms is

39

---

an unreasonable approach . Such widespread extrapolation takes the concept of upstream

influence to an impractical extreme .

3) The stream segment is not smaller than third order in size

. Stream order is a relative measure

of stream size ; larger orders represent larger streams . Using third order as a size limit is

consistent with the extent of the site-based fish and macroinvertebrate information used,

which predominantly is from third-order streams and larger . Importantly, not all stream

segments smaller than third order were denied enhanced protection outright . As per the first

criterion, regardless of stream size, if sufficient biological information is available from the

segment and the information indicates presence of a meaningful amount of sensitive

organisms, the segment was selected for enhanced protection

. Consequently, statewide,

about 6% of the stream length selected for enhanced dissolved oxygen protection comprises

streams smaller than third order.

4) The "stream segment" is free-flowing, i.e.,

not obviously part of a lake, reservoir, or large-

river backwater. As previously mentioned, lakes, reservoirs, backwaters, and other lentic

habitats require separate consideration from free-flowing streams when developing water

quality, standards for dissolved oxygen .

With the above exceptions, the selection of stream segments for enhanced protection proceeded

upstream from any site that has a meaningful amount of sensitive organisms (Figure 4, "A"

arrows)

. If a site was encountered that has sufficient biological information that indicates lack of

a meaningful amount of sensitive organisms, then selection ceased about halfway to that point or

40

---

at a practical endpoint such as an obvious confluence ("B"

arrows). In a few cases, stream

segments in the vicinity of a site that lacks a meaningful amount of sensitive organisms

nonetheless were selected for enhanced dissolved oxygen protection because other nearby sites

both upstream and downstream have meaningful amounts of sensitive organisms ("C" arrow). In

general, in selecting stream segments for enhanced protection or not, evidence of a meaningful

amount of sensitive organisms in the vicinity preceded lack of such evidence in the vicinity .

For large rivers, segments that include a site that has a meaningful amount of sensitive organisms

were selected for enhanced dissolved oxygen protection . For the part of Mississippi River

comprising navigational pools, all segments in the same river pool as a site that has a meaningful

amount of sensitive organisms were selected

. For the other large rivers, segments in the vicinity

of a site that lacks a meaningful amount of sensitive organisms nonetheless were selected for

enhanced dissolved oxygen protection for situations in which other nearby sites both upstream

and downstream have meaningful amounts of sensitive organisms .

Figure 5 shows the stream segments that were selected by Illinois DNR and Illinois EPA for

enhanced dissolved oxygen protection . A table containing stream names and location

information of each stream segment can be found in the Attachment 1 of Toby Frevert's Pre-

filed testimony

. To generate this list, each selected stream segment was spatially located using a

geographic information system (GIS)

. Latitude and longitude values were identified for each

starting and ending point and a unique segment number was assigned to each pair of starting and

ending points . The stream name of each segment was based on United States Geological Survey

7.5-minute digital topographic maps .

41

---

Proceeding upstream,

for each stream segment

...

Is stream segment represented by a

site that has a meaningful amount of

sensitive organisms?

Stream segment requires enhanced

dissolved oxygen protection .

V

V

A

Is the stream segment smaller than

3rd order or is it not free-flowing?

yes

yes

no

no

1

no

Does stream segment drain to a site

that has a meaningful amount of

sensitive organisms?

V

Does the nearest downstream site

that has sufficient biological

information have a meaningful

amount of sensitive organisms?

yes

Does the nearest downstream site that

has sufficient biological information

occur in Illinois River, Wabash River,

Ohio River, or Mississippi River?

Stream segment is not a candidate for enhanced dissolved oxygen protection

.

Figure 3

. Guidelines for using site-specific fish or macroinvertebrate information to identify stream

segments that require enhanced dissolved oxygen protection

. These guidelines apply for segments

not part of Illinois River, Mississippi River, Ohio River, or Wabash River

.

no

no

-o

42

---

®

Stream that is third-order or larger

Stream that is third-order or larger and selected for

enhanced dissolved oxygen protection

O

Stream site that has sufficient biological information,

but lacks a meaningful amount of sensitive organisms

Stream site that has sufficient biological information

and a meaningful amount of sensitive organisms

V V V j'd

Lake or reservoir

Figure 4 . Example of using site-specific fish or macroinvertebrate information to identify stream segments that require

enhanced dissolved oxygen protection Labeled arrows indicate examples addressed in the text .

43

---

Streams selected for enhanced

dissolved oxygen protection

Vj

Streams that

are third-order in

size or larger

Figure 5

. Illinois streams selected for enhanced dissolved oxygen protection

.

44

---

Review of stream segments selected for enhanced dissolved oxygen protection

Field biologists affiliated with Illinois DNR and Illinois EPA reviewed the stream segments

selected for enhanced dissolved oxygen protection

. Also, additional information on the presence

of some mussel species was used to evaluate the selections

. Although data on mussel sensitivity

to low dissolved oxygen are limited, evidence suggests that riffle-dwelling mussel species are

more sensitive than other types (Johnson et al

. 2001)

. USEPA (1986) recognizes this connection

to habitat .

"In general, stream invertebrates that are requisite riffle-dwellers probably have a

higher dissolved oxygen requirement than other aquatic invertebrates" (p

. 3). Mussel experts in

Illinois identified seven intolerant mussel species (including

V. iris)

as primarily riffle dwelling

(Table 6)

. Ninety-seven percent of locations of riffle-dwelling mussels occur on segments

selected for enhanced dissolved oxygen protection, thereby corroborating Illinois DNR's and

Illinois EPA's use of the fish and non-mussel macroinvertebrate information in locating waters

for enhanced protection.

Table 6

Intolerant, riffle-dwellin

Common Name

Purple Wartyback

Rabbitsfoot

Snuffbox

Wavyrayed Lampmussel

Kidneyshell

Ellipse

Rainbow

mussel s

ecies in Illinois .

Scientific Name

Cyclonaias tuberculata

Quadrula cylindrica

Epioblasma triquetra

Lampsilis fasciola

Ptychobranchusfasciolaris

Venustaconcha ellipsiformis

Villosa iris

I

45

---

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Freshwater Biology 37 :107-111 .

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Wastes 27:321-331

.

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. Second Progress Report . Sewage and Industrial

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Bailey, R. M

. and six others . 1970. A list of common and scientific names of fishes from the

United States and Canada . Third edition

. American Fisheries Society Special Publication

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Becker, G

. C

. 1983 . Fishes of Wisconsin

. The University of Wisconsin Press, Madison,

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Chen, Li-Yen, A. G. Heath, and R . J. Neves. 2001

. Comparison of oxygen consumption in

freshwater mussels (Unionidae) from different habitats during declining dissolved oxygen

concentration. Hydrobiologia 450 :209-214

.

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Connolly, N . M., M

. R. Crossland, and R. G . Pearson . 2004. Effect of low dissolved oxygen on

survival, emergence, and drift of tropical stream macroinvertebrates

. Journal of the North

American Benthological Society 23

:251-270 .

Davis, J . C. 1975

. Minimal dissolved oxygen requirements of aquatic life with emphasis on

Canadian species : a review

. Journal of the Fisheries Research Board of Canada 32 :2295-

2332.

Davis, J

. C

. and eight others . 1979. Dissolved oxygen . Pages 169-174 in R

.V. Thurston, R

. C.

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T. A. Edsall, and Y . M . Barber, Jr. (editors) . A review of the

EPA Red Book : quality criteria for water

. Water Quality Section, American Fisheries

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. The University of Tennessee

Press, Knoxville, Tennessee .

Hilsenhoff, W . L. 1977

. Use of arthropods to evaluate water quality of streams . Technical

Bulletin Number 100 . Wisconsin Department of Natural Resources, Madison, Wisconsin

.

Hunsaker, C . T. and D. A

. Levine . 1995 . Hierarchical approaches to the study of water quality

in rivers

. BioScience 45 :193-203 .

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Hynes, H. B. N. 1970. The ecology of running waters

. University of Toronto Press, Toronto,

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. In the Matter of : Water Quality Standards Revisions,

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. and N. M. Burkhead. 1994

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. Golladay, and W. K. Michener. 2001 . Effects of drought on

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southwest Georgia (July

- October, 2000) . Final Report, presented to The Nature

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http://Wwwjonesctr.org/research/aquatics-research/final

report2.pdf

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. 2004. Black bass fishing seasons

in Michigan

: background, research review, and recommendations

. Michigan Department of

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. Field studies on the oxygen requirements of certain fresh-water fishes

.

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Omernik, J . M., Abernathy, A . R., and L. M

. Male. 1981 . Stream nutrient levels and proximity

of agricultural and forest land to streams : some relationships

. Journal of Soil and Water

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. Conservation Commission of the State of

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. Notes on associations between dissolved oxygen and fish and

macroinvertebrate assemblages in wadeable Ohio streams

. November 12, Center for

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. 1988 . Fishes of Arkansas

. The University of Arkansas

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. Langein, H. Brown, and J. Ferencak. 1991

. Effects of discharge fluctuations on

survival of smallmouth bass in the Kankakee River, Illinois

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. Journal of Soil and Water Conservation 36

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50

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Michael Rosenberg, Esq.

Richard Lanyon

Metropolitan Water Reclamation District

100 East Erie Street

Chicago, Illinois 60611

Matthew Dunn

Office of the Attorney General

188 West Randolph, 20a'

Floor

Chicago, Illinois 60601

Roy Harsch

Sheila Deeley

Gardner Carton & Douglas

191 N Wacker Drive, Suite 3700

Chicago, Illinois 60606

John Donahue

City of Geneva

22 South First Street

Geneva, Illinois 60134

N. LaDonna Driver

Illinois Environmental Regulatory Group

3150 Roland Avenue

Springfield, Illinois 62703

Benard Sawyer

Metropolitan Water Reclamation District

6001 W Pershing Rd

Cicero, Illinois 60650

Lisa Frede

Chemical Industry Council of Illinois

2250 E Devon Avenue, Suite 239

Des Plaines, Illinois 60018

James DaugHerty

Thom Creek Basin Sanitary District

700 West End Avenue

Chicago Heights, Illinois 60411

SERVICE LIST R 04-25

Claire Manning

Brown, Hay & Stephens LLP

205 South 5th Street

PO Box 2459

Springfield, Illinois 62705

Tracy Elzemeyer

Illinois-American Water Company

535 North New Ballas Road

St. Louis, MO 63141

Katherine Hodge

Hodge Dwyer Zeman

3150 Roland Avenue

PO Box 5776

Springfield, Illinois 62705

Margaret Howard

Hedinger Law Office

2601 South 5 U' Street

Springfield, Illinois 62703

Frederick Keady

Vennillion Coal Company

1979 Johns Drive

Glenview, Illinois 60025

Fred Hubbard

19 West Madison

PO Box 12

Danville, Illinois 61834

W.C. Blanton

Blackwell Sanders Peper Martin LLP

4801 Main Street, Suite 1000

Kansas City, MO 64112

Dennis Duffield

Dept of Public Works & Utilities

921 E. Washington Street

Joliet, Illinois 60431

---

Mike Callahan

Bloomington Normal Water Reclamation District

PO Box 3307

Bloomington, Illinois 61702-3307

Larry Cox

Downers Grove Sanitary District

-

2710 Curtiss Street

Downers Grove, Illinois 60515

Tom Muth

Fox Metro Water Reclamation District

682 State Route 31

Oswego, Illinois 60543

Stanley Yonkawski

Illinois Department of Natural Resources

One Natural Resources Way

Springfield, Illinois 62702-1271

Erika Powers

Barnes & Thornburg

1 N Wacker, Suite 4400

Chicago, Illinois 60606

Albert Ettinger

Environmental Law & Policy Center

35 E Wacker, Suite 1300

Chicago, Illinois 60601

CON'T SERVICE LIST R 04-25

Todd Main

Friends of the Chicago River

407 S Dearborn, Suite 1580

Chicago, Illinois 60605

Vicky McKinley

Evanston Environment Board

223 Grey Avenue

Evanston, Illinois 60202

Irwin Polls

Ecological Monitoring & Assessment

3206 Maple Leaf Drive

Glenview, Illinois 60025

William Richardson

Illinois Department of Natural Resources

One Natural Resources Way

Springfield, Illinois 62702-1271

Marc Miller

Michael Fischer

Office of Lt

. Governor Pat Quinn

State House, Room 214

Springfield, Illinois 62706

Thomas Murphy

2325 N Clifton Street

Chicago, Illinois 60614

---

STATE OF ILLINOIS

COUNTY OF SANGAMON

SS.

PROOF OF SERVICE

I, the undersigned, on oath state that I have served the attached

Pre-filed

Testimony of Toby Frevert, Roy Smogor and Joel Cross upon the person to whom it is

directed, by placing it in an envelope addressed to

:

TO: Dorothy Gunn, Clerk

Illinois Pollution Control Board

James R

. Thompson Center

100 W. Randolph Street 11-500

Chicago, Illinois 60601

(OVERNIGHT VIA MAIL)

SEE ATTACHED SERVICE LIST

Regular Mail

NOTICE

and mailing it First Class Mail from Springfield, Illinois on April 3, 2006, with sufficient

postage affixed .

SUBSCRIBED AND SWORN TO BEFORE ME

This 3`d

day of April, 2006

Richard McGill, Hearing Officer

Illinois Pollution Control Board

James R. Thompson Center

100 W. Randolph Street, Suite 11-500

Chicago, Illinois 60601

(OVERNIGHT VIA MAIL)

I •"

1

9 •

•

.

OFFICIAL SEAL oaae

CYNTHIA L

. WOLFE

NOTARY PUBLIC, STATE

OF

ILLINOIS

.

THIS FILING IS SUBMITTED ON RECYCELD PAPER