ILLINOIS POLLUTION CONTROL BOARD
July 8, 2004
IN THE MATTER OF:
)
)
REVISIONS TO RADIUM WATER QUALITY ) R04-21
STANDARDS: PROPOSED NEW 35 ILL. ADM. ) Rulemaking - Water
CODE 302.307 and AMENDMENTS TO )
35 ILL. ADM. CODE 302.207 and 302.525 )
Proposed Rule. First Notice.
OPINION AND ORDER OF THE BOARD (by N.J. Melas):
On January 13, 2004, the Illinois Environmental Protection Agency (Agency) filed a
proposal to amend Part 302 of the Board’s water quality standards. The Agency proposes to
change the general use and Lake Michigan water quality standards for radium from 1 picocurie
per liter (pCi/L) to 5 pCi/L and apply the proposed standards specifically to surface waters used
for public and food processing water supplies. These changes make the radium water quality
standards consistent with the federal finished water maximum contaminant level (MCL) and
ensures the protection of surface water intakes for raw drinking water in the State. The proposed
changes are also expected to relieve a regulatory burden for many existing publicly owned
treatment works (POTWs) that receive, treat, and discharge wastewater from public water
supplies that remove radium from high radium groundwater.
Today’s order adopts the Agency’s proposal for publication of first notice in the
Illinois
Register
. First-notice publication in the Illinois Register will begin a 45-day period for
interested persons to file public comments with the Board.
The Board will hold a hearing following first-notice publication. The Board first gives
this rulemaking’s procedural history before providing an overview of the change in water quality
standards and discussing the specific provisions of the first-notice proposal.
PROCEDURAL HISTORY
The Board accepted this proposal for hearing on January 22, 2004. The Board has held
two hearings before the Board hearing officer, members and staff. The first hearing was held on
April 1, 2004, at the James R. Thompson Center in Chicago. The second hearing was held on
May 6, 2004, at the Board’s offices in Springfield. Both hearings allowed the proponent and any
other interested party the opportunity to present testimony on the merits and economic impact of
the rulemaking proposal.
The Agency, represented by Ms. Deborah Williams, presented three witnesses at the first
hearing. Mr. Jerry Kuhn is the manager of the permit section, responsible for reviewing
community water supplies’ construction permit applications, for the Division of Public Water
Supply of the Agency. Mr. Bob Mosher is an aquatic biologist in the Agency’s Water Quality
2
Standards Unit. Mr. Blaine Kinsley is a manager of the Industrial Unit in the Division of Water
Pollution Control permit section. Mr. Dennis Duffield, on behalf of the City of Joliet, presented
testimony at the second hearing.
On April 2, 2004, the Board also received a letter from the Department of Commerce and
Economic Opportunity (DCEO) stating that it would not conduct an economic impact study
(EcIS) on the proposed rules. As required by Section 27(b) of the Act (415 ILCS 5/27(b)
(2002)), the Board made the DCEO’s letter available to the public at least 20 days before
hearing. No one testified regarding DCEO’s letter.
The Board hearing officer entered two exhibits into the record at hearing, both offered by
the Agency. The transcripts of the Chicago and Springfield hearings were received by the Board
on April 1 and May 17, 2004, respectively, and are available on the Board’s website:
www.ipcb.state.il.us. The hearing officer set a deadline of June 3, 2004, for filing public
comments to ensure the Board would have time to consider any comments before proceeding to
first notice.
MOTION FOR A THIRD HEARING
On June 2, 2004, WRT Environmental (Illinois), L.L.C. (WRT Environmental)
simultaneously filed a public comment and moved the Board for an additional merit hearing.
1
WRT Environmental opposes the Agency’s proposal and states that all radium or uranium
removal processes generate radioactive residuals, yet many communities do not have the
expertise to safely handle, transport, or dispose of radioactive residuals. WRT Environmental
indicates that at a third hearing it would discuss the technical feasibility, economic
reasonableness, and environmental impact of the proposal, and the infeasibility or
unreasonableness of the existing standards. WRT Environmental requests a third hearing to
occur before the Board considers this proposal for second notice. PC1 at 2.
On June 3, 2004, the Environmental Law and Policy Center (ELPC) filed a public
comment urging the Board to reserve judgment on the proposal. The ELPC contends that the
record lacks information regarding the potential effect of radium on aquatic life and the costs of
utilizing processes for removing radium from drinking water that do not result in the discharge
of radium. Additional public comments may be filed by anyone until the end of the minimum
45-day period that will start upon first-notice publication of these proposed amendments in the
Illinois Register
.
On June 14, 2004, the City of Joliet (Joliet) opposed WRT Environmental’s motion for a
third hearing. Joliet contends that WRT Environmental presents information related to treatment
technologies that can be used to meet the radium public water supply standards and resulting
sludge issues. Joliet argues, however, that treatment technologies have nothing to do with this
rulemaking, which addresses the general use water quality standards for radium. Joliet contends
that WRT Environmental cannot claim that it did not know about this rulemaking because the
1
The Board cites WRT Environmental’s public comment as “PC1 at _,” and motion for a third
hearing as “Mot. at _.”
3
Board has provided adequate notice of both hearings held in this matter. For these reasons, Joliet
argues that WRT Environmental has not raised any issues that would necessitate another hearing
in this matter.
On June 18, 2004, the Agency responded in opposition to the motion for a third merit
hearing. Similarly, the Agency argues that the Board has adequately noticed the two hearings
and developed a complete record in this matter. The Agency argues that WRT Environmental’s
request will cause the Board, the Agency, and other participants unnecessary expenses to
participate in a third hearing. The Agency notes that WRT Environmental has submitted public
comments in this matter. For these reasons, the Agency moves the Board to deny WRT
Environmental’s motion for a third hearing.
On July 6, 2004, the ELPC and Sierra Club filed a public comment specifically in favor
of WRT Environmental’s motion for a third hearing. The groups argue that it would be “better
practice and most economical of the time of the Board” to hold the third hearing before issuing a
first notice order.
The Board agrees with those participants who believe that the progress of this rulemaking
should not be delayed. Accordingly, the Board will not schedule a third hearing prior issuing its
first-notice order today. But the Board further notes that under the Illinois Administrative
Procedures Act, interested persons can request a public hearing. The Board must grant this
request under certain conditions. See 5 Ill. Adm. Code 100/5-40(b) (2002). Rather than waiting
for a qualifying request to be filed, the Board will commit to hold a hearing after publication in
the Illinois Register of today’s first-notice proposal.
Neither Joliet’s nor the Agency’s responses address the public comments submitted by
the ELPC and Sierra Club urging the Board to more thoroughly develop the record. In its public
comment, WRT Environmental states it can address concerns such as those raised by the ELPC
and Sierra Club; the potential effect of radium on aquatic life and the costs of utilizing processes
for removing radium from drinking water that do not result in the discharge of radium. The
Board directs the hearing officer to schedule a third hearing.
OVERVIEW OF THE PROPOSED CHANGES IN RADIUM WATER QUALITY
STANDARDS
In the proposal, the Agency states that radium is a naturally occurring radioactive metal
that exists in several isotopes, and is commonly found in Illinois groundwater. According to the
Agency, the proposed changes to Sections 302.207 and 302.525 eliminate the existing general
use and Lake Michigan (respectively) water quality standards for radium 226, yet retain the
existing radioactivity standards for gross beta particle activity and strontium 90. Statement at 7-
8.
2
The proposed new Section 302.307 establishes a public and food processing water supply
standard for radium 226 and 228 combined.
Id
. at 7. The Agency states that these proposed
amendments correspond to the United States Environmental Protection Agency’s MCL for
2
The Agency’s Statement of Reasons included in the rulemaking proposal will be cited as
“Statement at _.”
4
finished drinking water.
Id
. at 8. This federal drinking water standard became effective
December 8, 2003. National Primary Drinking Water Regulations; Radionuclide; Final Rule, 65
Fed. Reg. 76707 (Dec. 7, 2000).
The Agency contends this proposal is protective of the sensitive designated use of the
State’s waters. Statement at 8. Additionally, the Agency contends that the proposal, if adopted,
relieve a regulatory burden for many existing POTWs and public drinking water supplies that
may not be in compliance with the existing general use radium water quality standards.
Statement at 15. According to the Agency, POTWs that are attached to public drinking water
supplies using high radium groundwater as the potable raw water source will benefit because the
proposed rulemaking increases the water quality standard for radium 226 and 228 combined
from 1 pCi/L to 5 pCi/L and limits the applicability of the proposed standards to public and food
processing water supplies.
Id
.
BACKGROUND ON RADIUM 226 AND RADIUM 228
Radium 226 emits alpha radiation and radium 228 emits beta radiation. The half-life of
radium 226 is 1,600 years while radium 228 has a half-life of 5.7 years. Radium may exist in
Illinois streams below sewage treatment plants serving communities that utilize high radium
groundwater as drinking water at levels exceeding the existing general use water quality standard
of 1 pCi/L. Statement at 2. Discharges into larger streams generally receive enough dilution to
meet the standard. For example, recent stream concentrations in the Fox River measured under 1
pCi/L. Statement at 2-3. Most Illinois community water supply facilities with high
concentrations of radionuclides in the source water are located in the northern half of the State of
Illinois and in a region that stretches from Henderson County in the west to Cook and Lake
Counties in the northeast. Statement at 3. Sewage treatment discharges to very small streams
where no dilution is present have the potential to contain as much as 5 to 10 pCi/L depending on
concentrations in the groundwater and efficiency of treatment in removing radium to the sewage
sludge.
Id
.
The Board adopted the general use water quality standard for radium 226, 1 pCi/L, in
1972. Statement at 3; citing R71-14. The same standard appeared in the Lake Michigan Basin
water quality standards in 1997. The standard has applied to Lake Michigan since 1972, but the
1997 regulation merely reflected a change in format of how Lake Michigan standards were
presented in the Board’s rules. The Agency contends that a federal source called the Green
Book (Report of the Committee of Water Quality Criteria. April 1, 1968) appears to be the
source for the Board’s general use water quality standards of 1972. Statement at 5. The Green
Book recommends a “permissible” value of 3 pCI/L for radium 226 and a “desirable value” of
<1 pCi/L. These values for strontium 90 are 10 and <2, and for gross beta, 1000 and <100
pCi/L. These values were intended to provide guidance for setting standards for raw water
quality at point of intake. Statement at 5. However, when the Board adopted the radium
standards, the Board chose the more stringent “desirable values” and also made the standards
generally applicable.
Id
.
The current federal finished drinking water Maximum Contaminant Level (MCL) for
radium 226 plus radium 228 is 5 pCi/L. Since the MCL is a finished water standard, the Agency
5
argues that protecting nearly all intake waters at 1 pCi/L, the current Illinois general water
quality standard, is excessively stringent. Statement at 6.
The Agency proposes two changes to the existing General Use and Lake Michigan Basin
radium water quality standards. First, the Agency proposes to eliminate the existing general use
water quality standard for radium 226 at Section 302.207, but retain the standards for gross beta
and strontium 90. Second, the Agency proposes to establish a new public and food processing
water supply standard of 5 pCi/L for combined radium 226 and 228 at Section 302.307 that
corresponds to the federal finished drinking water MCL. The Agency’s proposal also deletes the
radium 226 standard from the Lake Michigan basin water quality standards at Section 302.525.
Since Lake Michigan is a public water supply for many Chicago communities, the public supply
intakes on and from Lake Michigan will be protected by the proposed public water supply
standard for combined radium 226 and 228 at 5 pCi/L, but under the Agency’s proposal, there
will be no separate radium standard for the Lake Michigan basin.
The Agency’s proposal retains the existing radioactivity standards for both gross beta and
Strontium 90 for the Lake Michigan basin. In summary, the proposed changes will apply a
radium standard that protects surface water intakes for raw drinking water at the same level
applicable to finished drinking water. Statement at 8.
Bases for the Proposed Standards
The Agency states that its basis for making the proposed standard applicable only to
public and food processing supplies is that there is no indication that radium is anything but a
threat to human health via drinking water. The Agency further notes that radium is a known
carcinogen and, accordingly, standards that protect drinking water are necessary. Statement at 9.
Other than human health, the Agency states that it did not find any scientific information
concerning the impact of radium on aquatic life.
Id
. The Agency states its research proves that
Illinois is unique compared to other states with radium regulations in having aquatic life water
quality standards. Statement at 9. Therefore, according to the Agency, the proposed changes
protect all uses that radium may impact. Statement at 9.
The Agency contends that where high radium groundwater is used, radium in treated
sewage effluent is expected at levels above the existing general use standard. Statement at 14.
When the receiving waters are small streams, the water quality standard is likely exceeded. The
Agency states it has not attempted to enforce the existing violations, preferring to change the
water quality standards to “correctly regulate radium and thereby eliminate the violations.”
Id
.;
see
Tr. 1 at 40.
Available Technologies for Removing Radium from Drinking Water Supplies
The Agency states that these regulations impact over 100 community water supplies with
radionuclides present in their source water used for drinking at concentrations higher than the
MCL of 5 pCi/L. The Agency states that community water supplies that exceed the MCL have
three basic options to lower radium levels: (1) blending the high radium source water with an
unaffected source of water; (2) acquiring an alternative source for drinking water; or (3)
6
installing treatment for the source water. Statement at 12. The Agency notes that the USEPA
considers ion exchange, reverse osmosis and lime softening as the best available technologies to
meet public water supply requirements for radium. Small system (facilities servicing less than
10,000 people) compliance technologies also include green sand filtration, hydrous manganese
oxide filtration, and enhanced coagulation/filtration. The Agency states that almost all radium in
drinking water pumped from the ground ends up either in sewage sludge or effluent. Statement
at 14.
Costs and Technical Feasibility
The Agency states that the technologies discussed above reduce radium in the influent
being treated in water treatment plants, but not the effluents from POTWs. Statement at 14. The
Agency states the proposal seeks to focus on limiting radium discharges that impact surface
water sources used by public drinking water supplies. In communities that use groundwater
with high levels of radium as the drinking water source rather than the surface waters, the
Agency expects that sources will not need to further address radium.
The Agency expects this rulemaking to have a positive economic impact since it both
increases the water quality standard for radium 226 and 228 and limits the waters to which the
standard applies. Statement at 15. Because the proposal sets a radium level of 5 pCi/L for
surface waters being used by public drinking water supplies, the Agency states that the proposed
changes require no new technology. Thus, the Agency expects that the proposal will not
negatively impact any existing sources.
Id
.
DISCUSSION OF FIRST-NOTICE PROPOSAL
Below the Board addresses the issues raised at hearing. The Agency testified that by
making the water quality standard for public and food processing water supplies the same as the
drinking water MCL, this rulemaking will allow community water supplies to come into
compliance with the Safe Drinking Water Act while preventing these same water supplies from
creating non-compliance issues for publicly owned treatment works. The Agency notes that
above all, the rulemaking protects surface water quality. Tr. 1 at 13-14.
At hearing, the Agency stated that the proposed rule will not require publicly owned
treatment plants to undergo antidegradation analyses because there will be no new radium
discharges, since there are no new radium loading on the treatment works. Tr. 1 at 50. If a new
source of radium is proposed, the new source would have to justify the discharge under the
antidegradation rules, which would include studies of treatment alternatives and steps to
minimize any necessary radium discharges. Tr. 1 at 27.
As discussed above, the Agency indicated at hearing that it has not enforced the current
water quality standard because there exists no reasonable alternative for publicly owned
treatment plants discharging into small streams to meet the standard. Whether a drinking water
public supply removes radium from the source water or not, does not impact the radium load for
the POTW because the wastewater from the water supplies also ends up at the POTW. Tr. 1 at
7
43. The Agency contends that the only way that radium will be reduced is if communities
abandon those deep wells as their water source.
Id
.
ORDER
The Board proposes for first notice the following amendments to 35 Ill. Adm. Code 302
and directs the Clerk to file the proposed rules with the Secretary of State for publication in the
Illinois Register. Proposed deletions to the current rules are stricken, and proposed additions are
underlined.
TITLE 35: ENVIRONMENTAL PROTECTION
SUBTITLE C: WATER POLLUTION
CHAPTER I: POLLUTION CONTROL BOARD
PART 302
WATER QUALITY STANDARDS
SUBPART A: GENERAL WATER QUALITY PROVISIONS
Section
302.100 Definitions
302.101 Scope and Applicability
302.102 Allowed Mixing, Mixing Zones and ZIDs
302.103 Stream Flows
302.104 Main River Temperatures
302.105 Antidegradation
SUBPART B: GENERAL USE WATER QUALITY STANDARDS
Section
302.201 Scope and Applicability
302.202 Purpose
302.203 Offensive Conditions
302.204 pH
302.205 Phosphorus
302.206 Dissolved Oxygen
302.207 Radioactivity
302.208 Numeric Standards for Chemical Constituents
302.209 Fecal Coliform
302.210 Other Toxic Substances
302.211 Temperature
302.212 Total Ammonia Nitrogen
302.213 Effluent Modified Waters (Ammonia)(Repealed)
SUBPART C: PUBLIC AND FOOD PROCESSING WATER SUPPLY STANDARDS
8
Section
302.301 Scope and Applicability
302.302 Algicide Permits
302.303 Finished Water Standards
302.304 Chemical Constituents
302.305 Other Contaminants
302.306 Fecal Coliform
302.307 Radium 226 and Radium 228
SUBPART D: SECONDARY CONTACT AND INDIGENOUS AQUATIC LIFE
STANDARDS
Section
302.401 Scope and Applicability
302.402 Purpose
302.403 Unnatural Sludge
302.404 pH
302.405 Dissolved Oxygen
302.406 Fecal Coliform (Repealed)
302.407 Chemical Constituents
302.408 Temperature
302.409 Cyanide
302.410 Substances Toxic to Aquatic Life
SUBPART E: LAKE MICHIGAN BASIN WATER QUALITY STANDARDS
Section
302.501 Scope, Applicability, and Definitions
302.502 Dissolved Oxygen
302.503 pH
302.504 Chemical Constituents
302.505 Fecal Coliform
302.506 Temperature
302.507 Thermal Standards for Existing Sources on January 1, 1971
302.508 Thermal Standards for Sources Under Construction But Not In Operation on
January 1, 1971
302.509 Other Sources
302.510 Incorporations by Reference
302.515 Offensive Conditions
302.520 Regulation and Designation of Bioaccumulative Chemicals of Concern (BCCs)
302.521 Supplemental Antidegradation Provisions for Bioaccumulative Chemicals of
Concern (BCCs)
302.525 Radioactivity
302.530 Supplemental Mixing Provisions for Bioaccumulative Chemicals of Concern
(BCCs)
302.535 Ammonia Nitrogen
9
302.540 Other Toxic Substances
302.545 Data Requirements
302.550 Analytical Testing
302.553 Determining the Lake Michigan Aquatic Toxicity Criteria or Values - General
Procedures
302.555 Determining the Tier I Lake Michigan Acute Aquatic Toxicity Criterion
(LMAATC): Independent of Water Chemistry
302.560 Determining the Tier I Lake Michigan Basin Acute Aquatic Life Toxicity
Criterion (LMAATC): Dependent on Water Chemistry
302.563 Determining the Tier II Lake Michigan Basin Acute Aquatic Life Toxicity Value
(LMAATV)
302.565 Determining the Lake Michigan Basin Chronic Aquatic Life Toxicity Criterion
(LMCATC) or the Lake Michigan Basin Chronic Aquatic Life Toxicity Value
(LMCATV)
302.570 Procedures for Deriving Bioaccumulation Factors for the Lake Michigan Basin
302.575 Procedures for Deriving Tier I Water Quality Criteria and Values in the Lake
Michigan Basin to Protect Wildlife
302.580 Procedures for Deriving Water Quality Criteria and Values in the Lake Michigan
Basin to Protect Human Health – General
302.585 Procedures for Determining the Lake Michigan Basin Human Health Threshold
Criterion (LMHHTC) and the Lake Michigan Basin Human Health Threshold
Value (LMHHTV)
302.590 Procedures for Determining the Lake Michigan Basin Human Health
Nonthreshold Criterion (LMHHNC) or the Lake Michigan Basin Human Health
Nonthreshold Value (LMHHNV)
302.595 Listing of Bioaccumulative Chemicals of Concern, Derived Criteria and Values
SUBPART F: PROCEDURES FOR DETERMINING WATER QUALITY CRITERIA
Section
302.601 Scope and Applicability
302.603 Definitions
302.604 Mathematical Abbreviations
302.606 Data Requirements
302.612 Determining the Acute Aquatic Toxicity Criterion for an Individual Substance –
General Procedures
302.615 Determining the Acute Aquatic Toxicity Criterion - Toxicity Independent of
Water Chemistry
302.618 Determining the Acute Aquatic Toxicity Criterion - Toxicity Dependent on Water
Chemistry
302.621 Determining the Acute Aquatic Toxicity Criterion - Procedure for Combinations
of Substances
302.627 Determining the Chronic Aquatic Toxicity Criterion for an Individual Substance -
General Procedures
302.630 Determining the Chronic Aquatic Toxicity Criterion - Procedure for
Combinations of Substances
10
302.633 The Wild and Domestic Animal Protection Criterion
302.642 The Human Threshold Criterion
302.645 Determining the Acceptable Daily Intake
302.648 Determining the Human Threshold Criterion
302.651 The Human Nonthreshold Criterion
302.654 Determining the Risk Associated Intake
302.657 Determining the Human Nonthreshold Criterion
302.658 Stream Flow for Application of Human Nonthreshold Criterion
302.660 Bioconcentration Factor
302.663 Determination of Bioconcentration Factor
302.666 Utilizing the Bioconcentration Factor
302.669 Listing of Derived Criteria
APPENDIX A References to Previous Rules
APPENDIX B Sources of Codified Sections
APPENDIX C Maximum total ammonia nitrogen concentrations allowable for certain
combinations of pH and temperature
TABLE A pH-Dependent Values of the AS (Acute Standard)
TABLE B Temperature and pH-Dependent Values of the CS (Chronic Standard) for
Fish Early Life Stages Absent
TABLE C Temperature and pH-Dependent Values of the CS (Chronic Standard) for
Fish Early Life Stages Present
AUTHORITY: Implementing Section 13 and authorized by Sections 11(b) and 27 of the
Environmental Protection Act [415 ILCS 5/13, 11(b), and 27]
SOURCE: Filed with the Secretary of State January 1, 1978; amended at 2 Ill. Reg. 44, p. 151,
effective November 2, 1978; amended at 3 Ill. Reg. 20, p. 95, effective May 17, 1979; amended
at 3 Ill. Reg. 25, p. 190, effective June 21, 1979; codified at 6 Ill. Reg. 7818; amended at 6 Ill.
Reg. 11161, effective September 7, 1982; amended at 6 Ill. Reg. 13750, effective October 26,
1982; amended at 8 Ill. Reg. 1629, effective January 18, 1984; peremptory amendments at 10 Ill.
Reg. 461, effective December 23, 1985; amended at R87-27 at 12 Ill. Reg. 9911, effective May
27, 1988; amended at R85-29 at 12 Ill. Reg. 12082, effective July 11, 1988; amended in R88-1 at
13 Ill. Reg. 5998, effective April 18, 1989; amended in R88-21(A) at 14 Ill. Reg. 2899, effective
February 13, 1990; amended in R88-21(B) at 14 Ill. Reg. 11974, effective July 9, 1990; amended
in R94-1(A) at 20 Ill. Reg. 7682, effective May 24, 1996; amended in R94-1(B) at 21 Ill. Reg.
370, effective December 23, 1996; expedited correction at 21 Ill. Reg. 6273, effective December
23, 1996; amended in R97-25 at 22 Ill. Reg. 1356, effective December 24, 1997; amended in
R99-8 at 23 Ill. Reg. 11249, effective August 26, 1999; amended in R01-13 at 26 Ill. Reg. 3505,
effective February 22, 2002; amended in R02-19 at 26 Ill. Reg. 16931, effective November 8,
2002; amended in R02-11 at 27 Ill. Reg. 166, effective December 20, 2002; amended in R_____
at _____ Ill. Reg. _____, effective ____________________.
SUBPART B: GENERAL USE WATER QUALITY STANDARDS
Section 302.207 Radioactivity
11
a)
Gross beta (STORET number 03501) concentration shall not exceed 100
picocuries per liter (pCi/L).
b)
Concentrations of radium 226 (STORET number 09501) and sStrontium 90
(STORET number 13501) concentration shall not exceed 1 and 2 picocuries per
liter (pCi/L)respectively.
(Source: Amended at _____ Ill. Reg. __________, effective __________)
SUBPART C: PUBLIC AND FOOD PROCESSING WATER SUPPLY STANDARDS
Section 302.307 Radium 226 and 228
Radium 226 and 228 (STORET number 11503) combined concentration shall not exceed 5
picocuries per liter (pCi/L) at any time.
(Source: Amended at _____ Ill. Reg. __________, effective __________)
SUBPART E: LAKE MICHIGAN BASIN WATER QUALITY STANDARDS
Section 302.525
Radioactivity
Except as provided in Section 302.102, all waters of the Lake Michigan Basin must meet the
following concentrations in any sample:
a)
Gross beta (STORET number 03501) concentrations must not exceed 100
picocuries per liter (pCi/L).
b)
Concentrations of radium 226 (STORET number 09501) and sStrontium 90
(STORET number 13501) concentration shall not exceed 1 and 2 picocuries per
liter (pCi/L)respectively.
(Source: Amended at _____ Ill. Reg. __________, effective __________)
IT IS SO ORDERED.
I, Dorothy M. Gunn, Clerk of the Illinois Pollution Control Board, certify that the Board
adopted the above opinion and order on July 8, 2004, by a vote of 5-0.
Dorothy M. Gunn, Clerk
Illinois Pollution Control Board
