ILLINOIS POLLUTION CONTROL BOARD 
December 6, 2007 
IN THE MATTER OF: 
PROCEDURES REQUIRED BY P. A. 94-849 
FOR REPORTING RELEASES OF 
RADIONUCLIDES AT NUCLEAR POWER 
PLANTS: NEW 35 Ill. Adm. Code 1010 
) 
) 
) 
) 
) 
) 
R07-20 
(Rulemaking - Water) 
Proposed Rule. First Notice. 
OPINION AND ORDER OF THE BOARD (by G.T. Girard): 
Pursuant to P.A. 94-849, the Illinois Environmental Protection Agency (Agency) 
proposed rules for prescribing standards for detecting and reporting unpermitted releases of 
radionuclides from nuclear power plants. The Board has held two hearings and accepted 
comments on the proposal. The Board today proposes for first notice the rule as proposed by the 
Agency, with only minor changes. 
The Board’s opinion opens with a procedural background and follows with a summary of 
the Agency’s proposal. Next, the Board summarizes the testimony and comments in the record. 
Finally, the Board will discuss the rule proposed for first notice. 
PROCEDURAL BACKGROUND 
On May 25, 2007, the Agency filed a proposal as required by Section 13.6(e) of the 
Environmental Protection Act (Act) (415 ILCS 5/13.6(e) (2006)). The proposal included a 10-
page statement of reasons (Reasons). On June 21, 2007, the Board accepted the rulemaking for 
hearing. 
On July 13, 2007, in accordance with Section 27(b) of the Act (415 ILCS 5/27(b) 
(2006)), the Board requested that the Department of Commerce and Economic Opportunity 
(DCEO) conduct an economic impact study for this rulemaking. On August 7, 2007, the Board 
was informed that the DCEO had decided not to conduct an economic impact study for this 
rulemaking. At the public hearing held on October 10, 2007 (Tr.2), the Board solicited 
comments on DCEO’s decision not to conduct an economic impact study. No comments were 
offered. Tr.2 at 5-6. 
On August 24, 2007, the Board received pre-filed testimony from Zigmund Karpa on 
behalf of Exelon Nuclear (Exelon) (Exh. 3) and Richard Cobb on behalf of the Agency (Exh. 1). 
The Board held two hearings in this proceeding before Hearing Officer Marie Tipsord. The first 
hearing was held on September 5, 2007, in Chicago (Tr.1) and the second October 10, 2007, in 
Springfield (Tr.2). At those hearings, the Board heard testimony from: 
Kyle Rominger and Richard Cobb on behalf of the Agency;
2
Zigmund Karpa on behalf of Exelon Nuclear. 
At the close of hearings, a November 1, 2007 deadline for public comments to be filed was set. 
The Board has received two public comments in this matter, both from the Agency (PC 1, PC 2). 
PROPOSAL 
The following discussion will summarize the Agency’s proposal and statement of 
reasons. First, the Board will summarize the background of the proposal and then discuss the 
new rule proposed by the Agency. 
Background 
The Agency submitted this proposed rulemaking pursuant to P.A. 94-849 which added 
Section 13.6 to the Act (415 ILCS 5/13.6 (2006)). Reasons at 1. Section 13.6 required the 
Agency, in consultation with the Illinois Emergency Management Agency (IEMA), to “propose 
rules to the Board prescribing standards for detecting and reporting unpermitted releases of 
radionuclides.” 415 ILCS 5/13.6(e) (2006). Section 13.6 further requires “the detection and 
reporting of unpermitted releases of any radionuclides into the groundwater, surface water, or 
soil at nuclear power plants, to the extent that federal law or regulation does not preempt such 
requirements.” 415 ILCS 5/13.6(a) (2006). Section 13.6 requires that “[w]ithin 24 hours after 
an unpermitted release of a radionuclide from a nuclear power plant, the owner or operator of the 
nuclear power plant where the release occurred shall report the release to the Agency and the 
Illinois Emergency Management Agency.” 415 ILCS 5/13.6(c) (2006). 
Section 13.6 was added to the Act following a series of leaks of tritiated water at the 
Braidwood Nuclear Power Station (Braidwood Station) in Will County, Illinois. Reasons at 2. 
The tritium leaks resulted in groundwater contamination and impacted a nearby residential well. 
Id
. A number of other nuclear power plants had also experienced tritium leaks, which resulted in 
groundwater contamination. 
Id
. 
The Agency has consulted with the Interagency Coordinating Committee on 
Groundwater (ICCG), the Groundwater Advisory Committee (GAC), and IEMA following the 
passage of P.A. 94-849 in order to develop these rules. Reasons at 3. The Agency also worked 
with Exelon Corporation (Exelon) while developing the proposed rules. 
Id
. Exelon owns and 
operates all of the nuclear power plants in Illinois, either itself or through related entities. 
Id
. 
The Agency also considered feedback on the proposed rules from the GAC-hosted stakeholder 
outreach meeting, to which state and federal legislators, representatives of local government, 
representatives of IEMA, the Nuclear Regulatory Commission (NRC), Exelon, the American 
Medical Association, and nuclear and environmental interest groups were invited. Reasons at 3-
4. 
Summary of the Rule 
The Agency has proposed procedures for reporting releases of radionuclides at nuclear 
power plants (Prop.). The procedures proposed will allow licensees of power plants to fulfill
3
their obligation under Section 13.6 of the Act (415 ILCS 5/13.6 (2006)) to report unpermitted 
releases of radionuclides to the Agency and IEMA. These procedures establish a requirement 
that within 24 hours of any unpermitted release of radionuclides into the groundwater, surface 
water, or soil, the licensee must evaluate the release to determine whether it needs to be reported 
and, if reporting is necessary, make the a report to the Agency and IEMA within that same 24 
hours. Prop. Section 1010.200. The proposal gives the proper procedure for reporting the 
releases, including the appropriate reporting phone numbers for the Agency and IEMA as well as 
instructions on electronic reporting. Prop. Section 1010.202. The proposal further requires a 
follow-up written report sent to the Agency and IEMA within five days after reporting the 
release. Prop. Section 1010.204. This follow-up report must contain the information required 
for the initial report as well as supplemental information on the release utilizing the best data 
available. 
Id
. 
Under the proposed rules, a radionuclide is deemed to have been detected if an 
unpermitted release of liquids either: 1) results in tritium concentrations of 200 picocuries per 
liter (pCi/L) or more outside the licensee controlled area, or 2) contains tritium at quantities of 
0.002 Curies (Ci) or more. PC 2 at 2. 
Tritium is a radionuclide that is a natural byproduct of electricity production in nuclear 
power plants. Exh. 1 at 3. Tritium is also naturally produced in the atmosphere when cosmic 
rays collide with air molecules. 
Id
. Naturally occurring tritium is found in trace amounts in 
groundwater worldwide. 
Id
. 
Based upon information from the Braidwood station, the background level for tritium is 
35 pCi/L. However, in commercial, State, and private laboratories (other than research 
laboratories), the lowest amount of tritium that can be practically detected is 200 pCi/L. That is 
why the reporting levels for this rule are 200 pCi/L. PC 2 at 3. The quantity of 0.002 Ci as 
another reporting requirement is a practical level. Exelon’s staff is familiar with this level and it 
can be determined without analytical testing. PC 2 at 4. Releases of quantities of less than 0.002 
Ci are not expected to result in concentrations of 200 pCi/L of tritium or more outside the 
licensee controlled area. 
Id
. 
These provisions of the rules are uniform across all contaminant sources and all 
geographic areas within the state. PC 2 at 4. These provisions do not apply outside Illinois, nor 
do they make special provision for alert and abatement standards and procedures respecting 
occurrences, emergencies of pollution or other short-term conditions constituting an acute danger 
to health or the environment, or regulations specific to individual persons or sites. PC 2 at 4-5. 
SUMMARY OF TESTIMONY 
Below the Board will summarize the testimony from the hearing in this proceeding. The 
Board will first summarize the Agency’s testimony and then Exelon’s testimony. 
Agency Testimony
4
The Board will summarize the testimony of the Agency’s primary witness, Richard Cobb. 
Then the Board will summarize the testimony of Kyle Rominger. 
Richard Cobb 
Mr. Cobb’s testimony spoke to the purpose and background of the regulations, a 
summary of the releases that lead to the new regulations, as well as explaining each section of 
the proposed regulations in turn. The following paragraphs will summarize each section of his 
testimony. 
Purpose of the Rulemaking. 
According to Mr. Cobb, the purpose of the Agency’s 
proposed regulations is to establish requirements for the owners and operators of nuclear power 
generating facilities to fulfill their obligation under Section 13.6 of the Act (415 ILCS 5/13.6 
(2006)) for reporting releases of radionuclides to soil, groundwater, or surface water to the 
Agency and IEMA. Exh. 1 at 1. Mr. Cobb also testified that the purpose of “this regulation is 
not to set standards for radionuclide releases, but to merely establish requirements for reporting a 
release of radionuclides.” 
Id
. 
Background. 
Mr. Cobb stated that these proposed regulations can be traced back to 
three groundwater contamination incidents at the Exelon nuclear power generating facilities 
located in: Dresden, Grundy County; Braidwood, Will County; and Byron, Ogle County. Exh. 1 
at 2. The contamination at Dresden resulted from numerous leaks from underground piping, 
which contaminated the groundwater with tritium. Exh. 1 at 3. At Braidwood, water mixed with 
tritium was released from a vacuum breaker, through a blowdown line, and into the Kankakee 
River. Exh. 1 at 2. The Byron contamination involved internal inspections at the plant, which 
reported standing water containing tritium that was found in six concrete vacuum breaker vaults 
in the ground that are part of the blowdown line running to the Rock River. Exh. 1 at 7. Though 
Exelon monitoring wells showed tritium, independent testing of drinking water wells at nine 
homes closest to the property line showed no signs of tritium. 
Id
. 
Summary of Releases. 
The release at Braidwood station involved approximately three 
million gallons of tritiated wastewater released from a blowdown line in 1998, causing a 
groundwater contamination plume. Exh. 1 at 3. The release at the Braidwood Station reached as 
high as 20,000 pCi/L. 
Id
. Mr. Cobb states that the background concentration of tritium at 
Braidwood was found at 35 pCi/L using an enriched tritium testing method to test the waters in a 
cooling water pond on site. Exh. 1 at 4. However, Mr. Cobb testified that enriched tritium tests 
are primarily used only in research laboratories due to their costs and technical requirements. 
Id
. 
Mr. Cobb further testified that 200 pCi/L is the practical qualification limit (PQL) for tritium, the 
lowest concentration or level that can be reliably measured with 95 percent confidence in the 
value. 
Id
. Mr. Cobb also testified that the Agency believes the use of 200 pCi/L is a more 
appropriate standard to use for reporting releases, because Exelon, IEMA’s Division of Nuclear 
Safety, and other commercial laboratories can readily perform testing to this level. 
Id
. 
The unpermitted release of tritiated water from the Dresden station in 2004 was 
discovered when concentrations of tritium in the range of 3,000,000 to 6,000,000 pCi/L were 
detected in monitoring wells that had been installed following a previous release in 1994. Exh. 1
5
at 5. Mr. Cobb testified that according to Exelon officials, the highest concentration of tritium 
found on the site was 20,000,000 pCi/L. 
Id
. According to Mr. Cobb, Exelon investigations 
found that the tritium contamination originated from a release in a condensate storage tank 
system through a pipe that passed under a liquid nitrogen tank. 
Id
. 
Agency’s Proposed Rule. 
The following paragraphs will summarize Mr. Cobb’s 
testimony in support of the specific rule language proposed by the Agency. 
Section 1010.200 Evaluation of Releases. 
Mr. Cobb testified that Section 1010.200 
contains the key thresholds for detecting and reporting releases of tritium that may cause, 
threaten, or allow degradation of surface or groundwater resources beyond the licensees’ 
boundary area. Exh. 1 at 7. The proposed off-site reporting threshold for tritium is based on the 
PQL of 200 pCi/L. According to Mr. Cobb, this measure is used in the existing Board’s 
preventative notice and response provisions of 35 Ill. Adm. Code 620.305 and 620.310 and is a 
measure reasonably achieved in commercial, State, and private laboratories. Exh. 1 at 8. Mr. 
Cobb further testified that the Agency and Exelon are in agreement with this threshold. 
Id
. Mr. 
Cobb also stated that tritium is being used for reporting because it is the only radionuclide being 
found. 
Id
. 
Mr. Cobb went on to testify that a level of 0.002 Ci of tritium is the suggested level for 
on-site reporting. Exh. 1 at 8. Releases of quantities of less than 0.002 Ci are not expected to 
result in concentrations of 200 pCi/L of tritium or more outside the licensee controlled area, 
making it a quality indicator of when reporting is necessary. 
Id
. According to Mr. Cobb, the 
Exelon staff is familiar with this measure and can report it rapidly upon occurrence rather than 
waiting for analytical tests. 
Id
. Mr. Cobb explained that in determining whether a 0.002 Ci on-
site standard would be sufficiently conservative to predict if 200 pCi/L would be exceeded 
beyond the licensee controlled area, a groundwater fate and transport model was used 
(BIOSCREEN 
see infra 
6). 
Groundwater Principles. 
Mr. Cobb testified that water entering the soil may evaporate, 
or be used by plants and transpired. Exh. 1 at 9. The rest of the water travels down through pore 
spaces until reaching the “water table,” which is the zone where all pore spaces are filled. 
Id
. 
The height of the water table is determined by measuring the elevation of water in wells that are 
dug into the saturated zone. 
Id
. Usually, the surface of the water table will rise and fall along 
with the overlying land surface, but in a more subtle and smoother fashion. 
Id
. The water table 
can intersect with the ground surface in certain places creating lakes, perennial streams, and 
springs, which are natural areas of groundwater discharge. 
Id
. Mr. Cobb further explained that 
while gravity makes surface water move downhill, groundwater moves downhill from areas of 
higher potential energy to areas of lower potential energy, moving toward areas that are less 
filled with water. 
Id
. 
The area where infiltration occurs is called a recharge zone and the area where 
groundwater discharges into streams or lakes is called the discharge zone. Exh. 1 at 9. 
According to Mr. Cobb, groundwater movement can be estimated using a map that shows the 
elevations of the water levels in observation wells. Generally, the water flow will run
6
perpendicularly to the contours of the map. 
Id
. The rate of groundwater movement is related to 
the permeability of the aquifer and the slope of the potentiometric surface. 
Id
. 
When measuring groundwater flow, “hydraulic conductivity” is used instead of 
permeability and is a function of the size and shape of pore spaces, the degree of interconnection 
of the spaces, and the type of fluid passing through the medium. Exh. 1 at 9. As a water-soluble 
contaminate migrates hydrolically through a groundwater field, its concentration will tend to 
decline progressively due to dilution, retardation and transformation. Exh. 1 at 11. With a 
release of tritium, mixture with uncontaminated groundwater will dilute the tritium contaminated 
water as it moves along. 
Id
. 
Modeling Approach. 
Mr. Cobb went on to testify regarding the modeling approach that 
the Agency used to determine whether a 0.002 Ci on-site standard would be sufficiently 
conservative to predict if 200 pCi/L would be exceeded beyond the licensee controlled area. Mr. 
Cobb testified that first a hypothetical source of tritium contamination was identified for each 
site, representing a nuclear generating station. Exh. 1 at 11. The BIOSCREEN modeling system 
was then used to determine whether a 0.002 Ci on-site standard would be sufficiently 
conservative to predict if 200 pCi/L would be exceeded beyond the licensee controlled area. 
Exh. 1 at 12. Mr. Cobb also testified that the models used represented “conservative” or 
“reasonable worst case” scenarios. Exh. 1 at 13. Mr. Cobb identified three basic objectives in 
this modeling approach: 
1)    
Determine if a release of 0.002 Ci of tritium from a representative source 
at a nuclear generating station would migrate off-site; 
2)    
Predict the migration of the tritium in groundwater with respect to the 
licensee controlled area, and with respect to adjacent properties and water 
bodies; and 
3)    
Use the modeling results to calculate leakage rates and associated 
concentrations (e.g., 0.71 gallons per minute and 17,248 pCi/L) to 
determine if they are realistic. 
Id
. 
The modeling scenario, according to Mr. Cobb, assumed that a release of tritiated water 
would occur most commonly in buried pipes and would be discovered within 30 days. Exh. 1 at 
13. 30 days was used because, according to Mr. Cobb, with Exelon’s monthly integrity tests of 
underground piping and blown down lines as well as real time moisture sensors in VB vaults, no 
leak should go undetected for more than 30 days. Exh. 1 at 14. 
Mr. Cobb explained that this system was used to model a contamination at the Braidwood 
station using a hypothetical release of 30,633 gallons of tritiated water, which equals a 
concentration of 17,248 pCi/L for 30 days. Exh. 1 at 14. The simulation showed that the plume 
would move approximately 595 feet in 237 days and the concentration of tritium in the water 
would be reduced to 200 pCi/L at that distance via dispersion. Exh. 1 at 15. Braidwood was 
used as the example because, as Mr. Cobb testified, the Agency knows how Braidwood’s 
hydrogeologic susceptibility varies as compared to the other Exelon facilities and so it can be
7
useful as a reference point. Exh. 1 at 16. According to Mr. Cobb, this information is helpful to 
the Agency because it shows that with an estimated mass of tritium being released from an 
underground pipeline or waste water conveyance, in a setting more or less susceptible than 
Braidwood, the Agency can know what the potential fate and transport will be at distances more 
than or less than 595 feet. 
Id
. 
Mr. Cobb concluded his explanation of the modeling approach by explaining that the 
modeling results, combined with knowledge regarding Exelon’s stations show that 0.002 Ci is a 
conservative reporting threshold for on-site releases of tritiated water. Mr. Cobb further 
explained that Exelon’s detection monitoring program will act as a backup to the occurrence 
based detection on site. Exh. 1 at 17. 
Section 1010.202 Reporting Releases. 
According to Mr. Cobb, this Section controls the 
form and format of how releases must be reported to the Agency and IEMA. Exh. 1 at 17. Mr. 
Cobb testified that the Agency duty officers and first responders have established communication 
protocol with IEMA and the State Emergency Operations Center, which uses cellular phones, 
satellite technology through smart phones, and other wireless devices. Exh. 1 at 17-18. 
Section 1010.204 Follow-up Written Report. 
This section requires a follow-up written 
report to the initial rapid response report. Exh. 1 at 17-18. This report will clarify and 
supplement information in the rapid response report, granting greater information to the public 
and providing a practical bridge to the Right-to-Know provisions of the Act (415 ILCS 5/25(d) 
(2006)), and the Board’s Community Relations Activities Performed in Conjunction with 
Agency Notices of Threats from Contamination (35 Ill. Adm. Code 1600). 
Id
. 
Response to Questions. 
When asked how Exelon will find out if there has been a 
release and how they will go about the detection and reporting process, Mr. Cobb testified that 
there is a visual inspection that is done of blowdown lines or other areas where releases have 
occurred in the past. Tr.1 at 15. The Agency along with IEMA, and the Department of Nuclear 
Safety Inspectors are conducting quarterly inspections to assure that the proper inspections are 
being done on site. Tr.1 at 15-16. There is also 24 hour a day on-site personnel from IEMA and 
the NRC. Tr.1 at 16. Mr. Cobb further testified that the real time sensors for detecting moisture 
in vacuum breakers as well as a complex set of groundwater monitors act as backups to the 
visual monitoring. Tr.1 at 17. If releases are detected through these systems, an alarm will be 
triggered so staff will know to go inspect the situation. 
Id
. 
Mr. Cobb went on to state that calculations of releases by on-site inspectors can be done 
because the inspectors generally know the pCi/L concentrations because they have the NRC 
permit that regulates the concentration and the inspectors have been trained to be “pretty 
accurate” concerning the number of gallons released. Tr.1 at 19. Therefore when a release is 
detected, the inspector can visually estimate the number of gallons released and calculate the 
amount of tritium released according to the pCi/L concentrations in the NRC permit. 
Id
. 
When asked whether the rule language should include a distinct subpart or section 
addressing the detection of releases, Mr. Cobb testified that the detecting portion is included in 
the evaluation of releases. Tr.1 at 12. According to Mr. Cobb, ongoing monitoring programs are
8
beyond the scope of Section 13.6 of the Act (415 ILCS 5/13.6 (2006)). Tr.1 at 13. Mr. Cobb 
believes that the rules are clear that the detection is built into the evaluation process. 
Id
. Mr. 
Cobb also pointed out that analytical methods for detection are already present in Part 611.101 of 
the Board’s regulations and are incorporated by reference in 35 Ill. Adm. Code 620, the 
Groundwater Quality Standards. 
Id
. Mr. Cob testified that by estimating the mass and 
calculating a concentration in pCi/L immediately without waiting for a laboratory to do the work, 
this detection method will be more preventative in nature than a method which relies on 
gathering samples and sending them to a laboratory. Tr.1 at 14. 
Mr. Cobb testified that the Agency’s position is that the monitoring requirements should 
not be in the rules because the monitoring programs that are in place coupled with the inspection 
programs are all that is needed. Tr.1 at 22-23. Mr. Cobb then again emphasized that the 
groundwater monitoring system that is in place is only a back up to the visual inspection and 
monitoring program that is ongoing. Tr.1 at 25. Mr. Cobb also testified that the inspection 
process is something that is already in place under 35 Ill. Adm. Code 309. The Agency already 
had authority to inspect the wastewater conveyances, under Part 309, and now the Agency is 
teaming up with IEMA to do a dual inspection. Tr.1 at 30. 
Mr. Cobb further testified that underground piping and other areas that have leaked in the 
past have been analyzed by the Fleetwood studies, so there are more detection devices in places 
where you might expect possible leaks. Tr.1 at 21-22. According to Mr. Cobb, underground 
piping, blowdown lines, and VB vaults are the primary areas for monitoring and all of these 
areas will be monitored under the integrated testing. Tr.1 at 22. 
Mr. Cobb was asked whether concentrations of radionuclides in a blowdown which are 
greater than the concentration allowed by the NPDES permit but are permitted by the NRC are 
considered unpermitted releases. Tr.1 at 31. Mr. Cobb testified that the wastewater constituents 
in the wastewater/tritium mixture have their own NPDES limits while the tritium is diluted to 
meet the NRC limits. 
Id
. The wastewater constituents are regulated by the state NPDES permit, 
but the tritium is regulated by the NRC only. Tr.1 at 32. 
Mr. Cobb stated that the primary thing the Agency was looking at in protecting 
groundwater was the beneficial use of the groundwater resource. Tr.1 at 33-34. Mr. Cobb 
testified that a private well owner was the lowest common denominator in examining how to 
protect the groundwater for beneficial use by not causing, threatening, or allowing a release of a 
contaminant that is not removed by ordinary treatment techniques under the Board’s 
Groundwater Quality Standards. Tr.1 at 34. Mr. Cobb went on to testify that he does not believe 
any radionuclide, other than tritium, will function as an indicator of release because the other 
radionuclides are removed via reverse osmosis and other technology. Tr.1 at 36. When asked 
what types of remedial actions are typically seen with these types of releases, Mr. Cobb 
explained that all remedial actions are different based upon the site hydrology and concentration. 
Tr.1 at 36-37. 
Mr. Cobb also testified that the proposed sections 1010.202(c) and 1010.204(c), requiring 
the Agency to post the reports concerning a release that causes, threatens, or allows an 
exceedance of the standards on its website were a good idea in parallel with the Right-to-Know
9
provision of the Act (415 ILCS 5/25(d) (2006)). Tr.1 at 42. Mr. Cobb also stated that every site 
center generated notice or well centric generated notice is published on the Agency’s Right-To-
Know website. 
Id
. 
When questioned on whether posting of reports and other information on the Agency’s 
website would compromise security at the Exelon facilities, Mr. Cobb stated that any security 
sensitive information would have been redacted before posting. Tr.1 at 43. 
Kyle Rominger 
Mr. Rominger testified that while creating the reporting forms, the Agency found that 
they wished to make a change in Section 1010.204. Tr.2 at 7. The changes to the proposed rule 
would require that a copy of the follow-up report be sent to IEMA and would therefore also 
insert IEMA address where the copy should be sent. 
Id
. According to Mr. Rominger, the change 
would also require the follow-up report to be submitted in both hard copy form and 
electronically. Tr.2 at 7-8. Mr. Rominger stated that the hard copy would get an additional five 
days to be submitted under this new proposal to avoid any issues with timeliness. Tr.2 at 8. 
Exelon Testimony 
Zigmund Karpa 
Mr. Karpa testified that NRC establishes the regulations and guides for the construction 
and operation of nuclear reactors. Exh. 3. at 3. Mr. Karpa further explained that utilities 
licensed by the NRC are responsible for designing, constructing, testing, and operating their 
facilities safely. 
Id
. NRC regulations establish protection standards for nuclear facilities, 
including standards for the protection of members of the public. 
Id
. Mr. Karpa went on to point 
out that 10 C.F.R. §20 requires that radioactive materials released from a facility must not cause 
the radioactive dose received by members of the public to exceed specified levels, as a result of 
the release. 
Id
. These levels are meant to protect public health and wellbeing. Mr. Karpa stated 
that usually the release is a planned release and is done according to the established procedures 
of the facility. Exh. 3. at 4. Mr. Karpa further testified that plant inspectors first verify that the 
release will not exceed the dose limitations imposed by the NRC regulations. 
Id
. Also, a pre-
release permit is issued for these releases, and the releases are monitored to confirm that they 
actually conform to the prerelease plan. 
Id
. 
Agency’s Proposed Rules. 
Mr. Karpa testified that Exelon will not object to Agency’s 
proposed rules as currently written and offers no changes to the proposed rules. Exh. 3. at 4. 
Mr. Karpa further testified that since the proposed rules only apply to reporting of unpermitted 
releases of radionuclides under Section 13.6 of the Act, the vast majority of releases from Exelon 
facilities would not be governed by the rule. Exh. 3. at 4-5. The majority of releases from 
Exelon are controlled releases done under Exelon’s NRC license. 
Id
. Mr. Karpa went on to 
testify that Exelon anticipates that it will use the Section 1010.104 provision, which expressly 
provides that the rules do not prevent or preclude reporting of radionuclides that are not required 
to be reported under section 13.6 of the Act (415 ILCS 5/13.6 (2006)), to voluntarily report 
releases that are not governed by these rules. 
Id
.
10
Mr. Karpa testified that in the event of a release at an Exelon station that cannot be 
quantified for any reason, the release will be reported within the 24-hour notification process and 
will be clarified with a report under Section 13.6 of the Act (415 ILCS 5/13.6 (2006)). Tr.1 at 
45. When asked about Exelon’s security concerns regarding the reports, Mr. Karpa testified that 
there may be areas of the plants that are confidential and those reports would be submitted 
indicating that there is sensitive information either by NRC or US computer requirements. Tr.1 
at 46. Mr. Karpa also stated that they have filed such reports in the past when submitting 
Exelon’s hydrogeologic investigations for each site. 
Id
. 
Mr. Karpa, when addressing the economic reasonableness of the proposed rule, stated 
that nothing that Exelon is doing outside of their self-imposed groundwater or industry imposed 
groundwater monitoring programs, would result in additional costs for Exelon at this point. Tr.1 
at 48. Mr. Karpa testified that frequent inspections are already being conducted at the Exelon 
facilities and the only other costs will be in providing information to IEMA and Agency when 
they conduct their quarterly inspections, so the costs would be reasonable. Tr.1 at 49. 
Mr. Karpa commented that, with regard to Mr. Cobb’s pre-filed testimony, Exelon does 
not believe that calculating background using a single sample is necessary. Tr.2 at 9. Mr. Karpa 
believes that the background calculation should be done using a much more scientific evaluation. 
Id
. 
DISCUSSION 
Section 13.6 of the Act (415 ILCS 5/13.6 (2006)) was enacted by P.A. 94-849 and 
amended by P.A. 95-066 (eff. Aug. 13, 2007). Section 13.6 regulates the release of 
radionuclides and requires detection and reporting of unpermitted releases. 415 ILCS 5/13.6(a) 
(2006). Unpermitted releases must be reported to the Agency and the IEMA within 24 hours. 
415 ILCS 5/13.6(b) (2006). Under Section 13.6, the Agency was required to propose rules to the 
Board prescribing standards for detecting and reporting unpermitted releases. The Agency 
fulfilled the statutory obligation by proposing these rules to the Board. In addition, Section 13.6 
of the Act (415 ILCS 5/13.6 (2006)) requires the Board to adopt the rules within one year of the 
Agency’s proposal being filed. The Board proceeds to first notice today to ensue the timely 
adoption of the proposed rules. 
Section 27 of the Act (415 ILCS 5/27 (2006)) provides in part that: 
the Board shall take in to account the existing physical conditions, the character of 
the area involved, including the character of the surrounding land uses, zoning 
classification, the nature of the exiting air quality, or receiving body of water, as 
the case may be, and the technical feasibility and economic reasonableness of 
measuring or reducing the particular type of pollution. 415 ILCS 5/27(a) (2006). 
Although only one corporation is impacted by these proposed rules, the rules apply statewide and 
will apply to any successor corporation. Therefore, the proposed rules are of general
11
applicability and the Board must determine that the rules are technically feasibility and 
economically reasonable. 
The inspection and detection procedures as described by Mr. Cobb and Mr. Karpa above 
show that the technical aspects of this proposed rule are already in place. The detection devices 
and employee training are already being utilized in the Exelon facilities. There would be no 
additional technological burden placed upon nuclear energy providers through this rule. 
Furthermore, the inspections in place will assist in detecting unpermitted releases in a timely 
manner, which will be protective of the environment and human health. 
The Agency and Exelon both agree that the economic impacts of the proposed rule will 
be reasonable considering the importance of providing timely notification of radionuclide 
releases to the Agency and IEMA for the protection of the communities. PC 2 at 4; Tr.1 at 48-
49. Mr. Karpa testified that nothing Exelon is doing outside of their monitoring programs, self-
imposed groundwater or industry imposed groundwater monitoring programs, would result in 
additional costs for Exelon at this point. Tr.1 at 48. Since Exelon is already conducting frequent 
inspections, there will be very few changes that have to be made to its practices already in place 
to comply with this rule. The economic impact of these changes will pale in comparison to the 
importance of these reporting standards. 
The Board agrees that these proposed rules are technically feasible and economically 
reasonable. As shown by the record, the Agency and Exelon concur that the reporting 
procedures proposed in this rule are technically feasible based upon the procedures already in 
place at Exelon facilities. Furthermore, the Agency and Exelon agree upon the economic 
reasonableness of the proposed rule. The addition of these reporting requirements would only 
add the relatively small costs of allowing Agency and IEMA inspections more often. 
The Agency did propose one change to the language proposed in Section 1010.204(b). 
See 
Exh. 6. The Agency proposes requiring follow-up reports in hard copy within five days of 
electronic filing and that the reports be sent to both the Agency and IEMA. The Board agrees 
that this change is warranted and the Board will make that change. 
Based on the record before the Board, the Board finds that the rules are economically 
reasonable and technically feasible. The Board also finds that the proposed rules will be 
protective of the environment and human health. Therefore, the Board finds that the record 
supports proceeding to first notice with these rules. 
CONCLUSION 
The Board will proceed to first notice with the rule as originally proposed by the Agency 
with the change to Section 1010.204(b) suggested by the Agency at hearing. 
ORDER 
The Board directs the Clerk to cause the publication of the following rule for first notice 
in the 
Illinois Register
.
12
TITLE 35: ENVIRONMENTAL PROTECTION 
SUBTITLE I: ATOMIC RADIATION 
CHAPTER I: POLLUTION CONTROL BOARD 
PART 1010 
PROCEDURES FOR REPORTING RELEASES OF RADIONUCLIDES AT NUCLEAR 
POWER PLANTS 
SUBPART A: GENERAL PROVISIONS 
Section 
1010.100    
Purpose 
1010.102    
Applicability 
1010.104    
Scope 
1010.106    
Definitions 
1010.108    
Severability 
SUBPART B: REPORTING 
1010.200    
Evaluation of Releases 
1010.202    
Reporting of Releases 
1010.204    
Follow-up Written Report 
AUTHORITY: Implementing and authorized by Section 13.6 and Section 27 of the 
Environmental Protection Act [415 ILCS 5/13.6, 27]. 
SOURCE: Adopted at 32 Ill. Reg. _________, effective _____________. 
SUBPART A: GENERAL PROVISIONS 
Section 1010.100    
Purpose 
This Part prescribes standards for detecting and reporting unpermitted releases of radionuclides 
from nuclear power plants pursuant to Section 13.6 of the Illinois Environmental Protection Act 
(Act) [415 ILCS 5/13.6]. 
Section 1010.102    
Applicability 
This Part applies to licensees of nuclear power plants that are required under Section 13.6 of the 
Act to report an unpermitted release of a radionuclide.
13
Section 1010.104    
Scope 
This Part sets forth the procedures licensees of nuclear power plants must follow to satisfy their 
obligation under Section 13.6 of the Act to report unpermitted releases of radionuclides to the 
Agency and to IEMA. This Part addresses only the reporting of unpermitted releases of 
radionuclides required under Section 13.6 of the Act. The requirements of this Part are 
independent of, and do not replace or supersede, any other reporting requirements in state or 
federal law or regulation. This Part does not prevent or preclude licensees from reporting 
releases of radionuclides that are not required to be reported under Section 13.6 of the Act. 
Section 1010.106   
Definitions 
Except as stated in this Section, or unless a different meaning of a word or term is clear from the 
context, the definition of words or terms in this Part shall be the same as that applied to the same 
words or terms in the Environmental Protection Act [415 ILCS 5]. 
“Act” means the Environmental Protection Act [415 ILCS 5]. 
“Agency” means the Illinois Environmental Protection Agency. 
“Curie” or “Ci” means the quantity of radioactive material producing 37 billion nuclear 
transformations per second. 
"Groundwater" means underground water which occurs within the saturated zone and 
geologic materials where the fluid pressure in the pore space is equal to or greater than 
atmospheric pressure
. [415 ILCS 5/3.64] 
“IEMA” means the Illinois Emergency Management Agency. 
“L” means liter. 
“Licensee” means the holder of a license issued for a nuclear power plant under Chapter I 
of Title 10 of the Code of Federal Regulations. 
“Licensee controlled area” means the land or property that is owned, leased, or otherwise 
controlled by the licensee. 
“Picocurie” or “pCi” means the quantity of radioactive material producing 2.22 nuclear 
transformations per minute. One pCi is one trillionth (10
-12
) of one curie. 
"Person" is any individual, partnership, co-partnership, firm, company, limited liability 
company, corporation, association, joint stock company, trust, estate, political 
subdivision, state agency, or any other legal entity, or their legal representative, agent, 
or assigns. 
[415 ILCS 5/3.315]
14
“Station generated liquids” means liquids used in, or as a part of, the power generation 
process at a nuclear power plant and that contain, or potentially could contain, radionuclides. 
“Surface water” means all water that is open to the atmosphere and subject to surface runoff. 
“Unpermitted release of a radionuclide” means any spilling, leaking, emitting, 
discharging, escaping, leaching, or disposing of a radionuclide into groundwater, 
surface water, or soil that is not permitted under State or federal law or regulation. 
[415 
ILCS 5/13.6(c)]. “Unpermitted release of a radionuclide” does not include the discharge 
of a radionuclide from a point source at a designated process water or cooling water 
outfall identified in the nuclear power plant’s National Pollutant Discharge Elimination 
System permit, provided the discharge is authorized in the nuclear power plant’s United 
States Nuclear Regulatory Commission operating license. 
1010.108    
Severability 
If any provision in this Part or its application to any person or under any circumstances is 
adjudged invalid, such adjudication shall not affect the validity of this Part as a whole or of any 
portion not adjudged invalid. 
SUBPART B: REPORTING 
Section 1010.200    
Evaluation of Releases 
Within 24 hours after an unpermitted release of a radionuclide from a nuclear power plant into 
groundwater, surface water, or soil, the licensee must evaluate the release in accordance with this 
Section to determine whether it must be reported. The evaluation cannot take into account 
remedial actions taken in response to the release (i.e., the evaluation must be based on the 
volumes of station generated liquids and concentrations or quantities of radionuclides released, 
not on the volumes of station generated liquids and concentrations or quantities of radionuclides 
remaining after the initiation or completion of response actions). If the release is required to be 
reported, the licensee must report the release in accordance with Section 1010.202 of this Part. 
a)    
Licensees must report unpermitted releases of station generated liquids that result 
in tritium concentrations of 200 pCi/L or more outside of the licensee controlled 
area. 
b)    
Licensees must report unpermitted releases of station generated liquids that 
contain tritium at quantities of 0.002 Curies or more.
15
Section 1010.202    
Reporting of Releases 
a)    
Reports required under Section 1010.200 of this Part must be given within 24 
hours of the release to both the Agency and IEMA in accordance with the 
following: 
1)    
Reports to the Agency must be given by telephone and electronically. At 
the time these rules are adopted the Agency’s telephone number for 
reporting environmental emergencies is 1-217-782-3637. 
2)    
Reports to IEMA must be given by telephone and electronically. At the 
time these rules are adopted IEMA’s telephone number for reporting 
emergencies is 1-800-782-7860, or, if calling from outside Illinois, 1-217-
782-7860. 
3)    
Electronic reports must be submitted on forms and in a format prescribed 
by the Agency, and must be submitted to addresses prescribed by the 
Agency and IEMA. The Agency shall consult with IEMA in developing 
the forms and format for electronic reports required under this Section. 
b)    
Reports required under Section 1010.200 of this Part must include, at a minimum, 
the following information using the best data available at the time of the report: 
1)    
The name and address of the nuclear power plant where the release 
occurred; 
2)    
The name, signature, and telephone number of the Principal Executive 
Officer for the nuclear power plant or the Principal Executive Officer’s 
authorized agent; 
3)    
The specific location of the release; 
4)    
The time and duration of the release; 
5)    
An estimate of the volume and radionuclide concentrations (in pCi/L) of 
station generated liquids released, and an estimate of the flow rate if the 
release is ongoing; 
6)    
Identification of the radionuclides released and an estimate of the 
quantities released (in Curies); 
7)    
Whether the release was to groundwater, surface water, or soil, and a 
description of the area into which the release occurred (e.g., field, ditch, 
stream, or other description) and the size of the area affected;
16
8)    
The actions taken to respond to, contain, and mitigate the release; 
9)    
The known and anticipated impacts to human health and the environment, 
including but not limited to groundwater and surface water resources, as a 
result of the release; 
10)   
The names, addresses, and telephone numbers of persons at the nuclear 
power plant who may be contacted for further information regarding the 
release; and 
11)   
The name and mailing address of the licensee of the nuclear power plant. 
c)    
The Agency must post copies of the electronic reports it receives under this 
Section on the Agency’s website. 
Section 1010.204    
Follow-up Written Report 
An owner or operator who reports a release under this Part must provide to the Agency and to 
IEMA a follow-up written report of the release within five business days after reporting the 
release. 
a)    
The follow-up report must confirm and update the information provided by the 
licensee under Section 1010.202 of this Part utilizing the best data available, and 
must also include the following information: 
1)    
Copies of all lab analyses used to confirm the presence of, or conducted in 
response to, the release if lab analyses have been conducted; 
2)    
Plan view and, if available, geological cross-section maps showing, at a 
minimum, the location of the release, the locations of samples taken to 
confirm the release if samples have been taken, the locations of samples 
taken in response to the release if samples have been taken, the measured 
and modeled extents of the release if known, the groundwater flow 
direction if known, groundwater contours if known, the boundary of the 
licensee controlled area, and structures, roads, and other surface features; 
3)    
An estimate of the volume and radionuclide concentrations (in pCi/L) of 
station generated liquids released but not recovered; 
4)    
An estimate of the quantities (in Curies) of radionuclides released but not 
recovered; 
5)    
An updated description of activities taken in response to the release; 
6)    
If additional activities in response to the release are planned, a description 
of such activities; and
17
7)    
The name and signature of the Principal Executive Officer for the nuclear 
power plant or the Principal Executive Officer’s authorized agent. 
b)    
The follow-up report must be submitted electronically on forms and in a format 
prescribed by the Agency, and must be submitted to addresses prescribed by the 
Agency and IEMA. Within five business days after submission of the electronic 
follow-up report, hard copies of the follow-up report must be submitted to the 
Agency and IEMA at the following addresses: 
Illinois Environmental Protection Agency 
Bureau of Water 
Groundwater Section 
1021 North Grand Avenue East 
P.O. Box 19276 
Springfield, Illinois 62794-9276 
Illinois Emergency Management Agency 
Division of Nuclear Safety 
Bureau of Environmental Safety 
1035 Outer Park Drive 
Springfield, Il 62704 
The Agency shall consult with IEMA in developing the forms and format for 
reports required under this Section. 
c)    
The Agency must post copies of the follow-up reports it receives under this 
Section on the Agency’s website. 
I, John T. Therriault, Assistant Clerk of the Illinois Pollution Control Board, certify that 
the Board adopted the above opinion and order on December 6, 2007, by a vote of 4-0. 
___________________________________ 
John T. Therriault, Assistant Clerk 
Illinois Pollution Control Board