Text

Applicant'S Environmental Report Operating License Renewal Stage, Byron Station, Units 1 and 2. Appendix C
	ML13162A367
Person / Time
Site:	Byron
Issue date:	05/31/2013
From:	; Exelon Generation Co
To:	; Office of Nuclear Reactor Regulation
References
	Download: ML13162A367 (54)
	v • d • e

Appendix C Special Status Species Correspondence Byron Station Environmental Report

This Page Intentionally Left Blank Byron Station Environmental Report Appendix C - Special Status Species Correspondence Table of Contents Letter Page Michael P. Gallagher, Exelon Generation, to Todd Rettig, Illinois Department of Natural Resources .............................................................................................................. C-1 Michael P. Gallagher, Exelon Generation, to Richard Nelson, U. S. Fish & Wildlife Service ................................................................................................................................ C-4 Figure 1. Project Location Map ................................................................................................. C-7 Figure 2. Byron to Wempleton and Cherry Valley Transmission Line Right-of-Ways ............... C-8 Figure 3. Byron South Transmission Line Right-of-Way ........................................................... C-9 ECOCAT query response ....................................................................................................... C-10 Jon Duyvejonck, U.S. Fish & Wildlife Service Rock Island Office, to Nancy L. Ranek, Exelon Generation (Email) ............................................................................................................ C-46 Biological Evaluation - Byron Station ..................................................................................... C-47 Byron and Braidwood Stations, Units 1 and 2 Page C-iii License Renewal Application

This Page Intentionally Left Blank Byron Station Environmental Report Appendix C - Special Status Species Correspondence November 09,2012 Mr. Todd Rettig Division Manager Office of Realty and Environmental Planning Illinois Department of Natural Resources 1 Natural Resources Way, 2" Floor Springfield, lllinois 62702-1271

SUBJECT:

Exelon Generation, LLC - Byron Station Units Iand 2 License Renewal Project. Request for Information on Listed Species and Sensitive Habitats - Ogle County

Dear Mr. Rettig:

Exelon Generation, LLC (Exelon) plans to apply to the U.S. Nuclear Regulatory Commission (NRC) for renewal of the operating licenses for Byron Station (Byron)

Units 1 and 2, in June 2013. The existing operating license for Unit 1 will expire on October 31, 2024, and the existing operating license for Unit 2 will expire on November 6, 2026. Renewed licenses would allow Byron Units 1 and 2 to operate until 2044 and 2046, respectively.

As part of the license renewal process, the NRC requires license renewal applications to include environmental reports assessing the impacts from license renewal activities on threatened or endangered species, listed or proposed for listing in accordance with the Endangered Species Act (ESA) (16 USC 1531, et seq.)(10 CFR 51,53(~)(3)(ii)(E)).This letter seeks input from the lllinois Department of Natural Resources (DNR) regarding such effects in the vicinity of Byron.

Project Features Byron is in northern lllinois near the center of Ogle County, approximately 90 miles west-northwest of Chicago, 17 miles southwest of Rockford, and 3.7 miles south-southwest of the City of Byron, as shown in Figure 1.

The Byron site property includes approximately 1,782 acres, which consists of the main site area and a right-of-way (ROW) to the Rock River for the cooling tower makeup water intake and blowdown discharge pipelines. The main site area consists of approximately 1,398 acres while the water pipelines ROW consists of the remaining 384 acres. The site is situated on a topographic high in the Rock River Hill Country physiographic province, in an agricultural area.

The nuclear generating facilities at Byron are sited in the approximate center of the main site area and include the two reactor containment buildings and related structures, two natural draft cooling towers, a switchyard, administration buildings, warehouses, and other features. The cooling tower makeup water intake and blowdown discharge pipelines ROW runs from the northwest site boundary approximately 2 miles west to the Rock River. The Rock River is the source of the plant's makeup water and the receiving body for the cooling tower blowdown discharge, which is subject to limitations Byron and Braidwood Stations, Units 1 and 2 Page C-1 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence Rettig - 2 established by National Pollutant Discharge Elimination System (NPDES) Permit 110048313, Three 345-kilovolt (345-kV) electrical transmission line ROWs totaling an additional approximately 1,210 acres, shown on Figures 2 and 3, were mnstructed with the station to conned it to the electric grid and are considered to be within the scope of the license renewal project. One ROW runs north and then east from Byron approximately 30 miles to the Wempleton Transmission Substation, located approximately 7 miles northwest of Rockford, IL. A second ROW runs northeast from Byron for approximately 21 miles, to the Cherry Valley Transmission Substation. The third ROW goes directly south for a total length of 8.5 miles to its intersection with the Nelson to Cherry Valley transmission line, which existed before Byron was constructed. All three ROWs pass through primarily agricultural land with some areas of forest or lesser value land use categories. These ROWs are owned and maintained Commonwealth Edison Company (ComEd). In locations where a ROW passes through farmland, the land generally continues to be used as farmland.

Identification of Threatened and Endangered Species Resources In 2011, Exelon conducted mussel surveys in the Rock River up- and down-stream of the Byron intakeldischarge pipelines to determine if any federally listed mussel species were present. No federally listed species was found during the survey. According to the USFWS database, there are no records of species that are candidates for federal listing or that are proposed for federal listing in Ogle or Winnebago Counties. Exelon is not aware of any other federally listed species being observed on the Byron site or along the associated ROWs.

The Byron license renewal project information was submitted to the lllinois DNR through the EcoCAT system. Attached for your review are the Illinois DNR reports listing the Natural Resource Review results of the Illinois Natural Heritage database for (1) the Byron Station; (2) the Byron Station Blowdown Area on Rock River; (3) the Byron Station to Cherry Valley Transmission Line, Segments 1 through 6; (4) the Byron South Transmission Line, Segments 1 and 2, and (5) the Byron to Wempleton Transmission Line, Segments 1 through 8. These attached database results for Byron and the associated ROWs show that several protected resources may be in the vicinity of the project location.

Activities During the License Renewal Terms Renewal of Byron Units 1 and 2 operating licenses will involve neither new construction, nor any land disturbing activities, changes to plant operations, or modifications of the transmission system that connects the plant to the regional electric grid. Operation and maintenance activities during the terms of the renewed licenses are only expected to occur in previously disturbed areas or existing ROWs. Also, Exelon and ComEd adhere to regulatory requirements regarding sensitive areas that could contain threatened or endangered species and work closely with USFWS and the Illinois DNR to protect these resources. Therefore, Exelon expects that continued operation and maintenance of Units 1 and 2 over the license renewal period (i.e., an additional 20 years for each unit),

including maintenance of the ROWs for the transmission line and cooling tower makeup water intake and blowdown discharge pipelines, would not adversely affect any species Byron and Braidwood Stations, Units 1 and 2 Page C-2 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence Rettig - 3 (or ecologically significant habitats) that is federally listed or proposed for federal listing as threatened or endangered.

Nevertheless, Exelon is requesting your help to identify potential impacts or other issues we may have overlooked that need to be addressed in the Byron license renewal environmental report. We are also interested in learning of any information your staff believes could help expedite the NRC's review of the Byron license renewal application.

Hence, in closing, we would appreciate receiving a response from you detailing such issues and information for the Byron site and the ROWs for the transmission line and cooling tower makeup water intake and blowdown discharge pipelines. We would also welcome your confirmation of our conclusion that Byron license renewal activities would not adversely affect any species that is federally listed or proposed for listing as threatened and endangered.

Because Exelon will incorporate a copy of your response, as well as this letter, into the Byron license renewal environmental report that will be submitted to the NRC as part of the Byron license renewal application, your response will be most helpful if it is received by December 14, 2012.

Please refer any questions regarding this submittal to Nancy Ranek, our License Renewal Environmental Lead, at (610) 765-5369.

Michael P. Gallagher

Enclosures:

Figure 1: Project Location Map Figure 2: Byron to Wempleton and Cherry Valley Transmission Line ROWs Figure 3: Byron South Transmission Line ROW EcoCAT Reports: (1) Byron Station (2) Byron Station Blowdown Area on Rock River (3) Byron Station to Cherry Valley Transmission Line, Segments 1 through 6 (4) Byron Station South Transmission Line, Segments 1 and 2 (5) Byron Station to Wempleton Transmission Line, Segments 1 through 8 Byron and Braidwood Stations, Units 1 and 2 Page C-3 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence November 09,201 2 Mr. Richard Nelson U. S. Fish & Wildlife Service Rock Island Field Office 1511 47th Avenue Moline, IL 61265

SUBJECT:

Exelon Generation, LLC - Byron Station Units 1 and 2 License Renewal Project. Request for information on Listed Species and Sensitive Habitats - Ogle County

Dear Mr. Nelson:

Exelon Generation, LLC (Exelon) plans to apply to the U.S. Nuclear Regulatory Commission (NRC) for renewal of the operating licenses for Byron Station (Byron)

Units 1 and 2, in June 2013. The existing operating license for Unit 1 will expire on October 31, 2024, and the existing operating license for Unit 2 will expire on November 6, 2026. Renewed licenses would allow Byron Units 1 and 2 to operate until 2044 and 2046, respectively.

As part of the license renewal process, the NRC requires license renewal applications to include environmental reports assessing the impacts from license renewal activities on threatened or endangered species, listed or proposed for listing in accordance with the Endangered Species Act (ESA) (16 USC 1531, et seq.)(10 CFR 5IT53(c)(3)(ii)(E)).This letter seeks input from the USFWS regarding such effects in the vicinity of Byron. Later, the NRC may also request an informal consultation with your office under Section 7 of the ESA ( I6 USC 1536(a)).

Project Features Byron is in northern Illinois near the center of Ogle County, approximately 90 miles west-northwest of Chicago, 17 miles southwest of Rockford, and 3.7 miles south-southwest of the City of Byron, as shown in Figure I.

The Byron site property includes approximately 1,782 acres, which consists of the main site area and a right-of-way (ROW) to the Rock River for the cooling tower makeup water intake and blowdown discharge pipelines. The main site area consists of approximately 1,398 acres while the water pipelines ROW consists of the remaining 384 acres. The site is situated on a topographic high in the Rock River Hill Country physiographic province, in an agricultural area.

The nuclear generating facilities at Byron are sited in the approximate center of the main site area and include the two reactor containment buildings and related structures, two natural draft cooling towers, a switchyard, administration buildings, warehouses, and other features. The cooling tower makeup water intake and blowdown discharge pipelines ROW runs from the northwest site boundary approximately 2 miles west to the Rock River. The Rock River is the source of the plant's makeup water and the receiving body for the cooling tower blowdown discharge, which is subject to limitations Byron and Braidwood Stations, Units 1 and 2 Page C-4 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence Nelson 2-established by National Pollutant Discharge Elimination System (NPDES) Permit lL0048313.

Three 345-kilovolt (345-kV) electrical transmission line ROWs totaling an additional approximately I,210 acres, shown on Figures 2 and 3, were constructed with the station to connect it to the electric grid and are considered to be within the scope of the license renewal project. One ROW runs north and then east from Byron approximately 30 miles to the Wempleton Transmission Substation, located approximately 7 miles northwest of Rockford, IL. A second ROW runs northeast from Byron for approximately 21 miles, to the Cherry Valley Transmission Substation. The third ROW goes directly south for a total length of 8.5 miles to its intersection with the Nelson to Cherry Valley transmission line, which existed before Byron was constructed. All three ROWs pass through primarily agricultural land with some areas of forest or lesser value land use categories. These ROWS are owned and maintained Commonwealth Edison Company (ComEd). In locations where a ROW passes through farmland, the land generally continues to be used as farmland.

Identification of Threatened and Endangered Species Resources In 2011, Exelon conducted mussel surveys in the Rock River up- and down-stream of the Byron intakeldischarge pipelines to determine if any federally listed mussel species were present. No federally listed species was found during the survey. According to the USFWS database, there are no records of species that are candidates for federal listing or that are proposed for federal listing in Ogle or Winnebago Counties. Exelon is not aware of any other federally listed species being observed on the Byron site or along the associated ROWs.

The Byron license renewal project information was submitted to the Illinois Department of Natural Resources (DNR) through the EcoCAT system. Attached for your review are the Illinois DNR reports listing the Natural Resource Review results of the Illinois Natural Heritage database for ( I ) the Byron Station; (2) the Byron Station Blowdown Area on Rock River; (3) the Byron Station to Cherry Valley Transmission Line, Segments 1 through 6; (4) the Byron South Transmission Line, Segments 1 and 2, and (5) the Byron to Wempleton Transmission Line, Segments 1 through 8. These attached database results for Byron and the associated ROWs show that several protected resources may be in the vicinity of the project location.

Activities During the License Renewal Terms Renewal of Byron Units 1 and 2 operating licenses will involve neither new construction, nor any land disturbing activities, changes to plant operations, or modifications of the transmission system that connects the plant to the regional electric grid. Operation and maintenance activities during the terms of the renewed licenses are only expected to occur in previously disturbed areas or existing ROWs. Also, Exelon and ComEd adhere to regulatory requirements regarding sensitive areas that could contain threatened or endangered species and work closely with USFWS and the Illinois DNR to protect these resources. Therefore, Exelon expects that continued operation and maintenance of Units 1 and 2 over the license renewal period (i.e., an additional 20 years for each unit),

including maintenance of the ROWs for the transmission line and cooling tower makeup water intake and blowdown discharge pipelines, would not adversely affect any species Byron and Braidwood Stations, Units 1 and 2 Page C-5 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence Nelson - 3 (or ecologically significant habitats) that is federally listed or proposed for federal listing as threatened or endangered.

Nevertheless, Exelon is requesting your help to identify potential impacts or other issues we may have overlooked that need to be addressed in the Byron license renewal environmental report. We are also interested in learning of any information your staff believes could help expedite the NRC's review of the Byron license renewal application.

Hence, in closing, we would appreciate receiving a response from you detailing such issues and information for the Byron site and the ROWs for the transmission line and cooling tower makeup water intake and blowdown discharge pipelines. We would also welcome your confirmation of our conclusion that Byron license renewal activities would not adversely affect any species that is federally listed or proposed for listing as threatened and endangered.

Because Exelon will incorporate a copy of your response, as well as this letter, into the Byron license renewal environmental report that will be submitted to the NRC as part of the Byron license renewal application, your response will be most helpful if it is received by December 14, 2012.

Please refer any questions regarding this submittal to Nancy Ranek, our License Renewal Environmental Lead, at (610) 765-5369.

Michael P. Gallagher

Enclosures:

Figure 1: Project Location Map Figure 2: Byron to Wempleton and Cherry Valley Transmission Line ROWs Figure 3: Byron South Transmission Line ROW EcoCAT Reports: (1) Byron Station (2) Byron Station Blowdown Area on Rock River (3) Byron Station to Cherry Valley Transmission Line, Segments 1 through 6 (4) Byron Station South Transmission Line, Segments 1 and 2 (5) Byron Station to Wempleton Transmission Line, Segments 1 through 8 Byron and Braidwood Stations, Units 1 and 2 Page C-6 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence Byron and Braidwood Stations, Units 1 and 2 Page C-7 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence Figure 2 Byron to Wempleton and Cherry Valley Transmission Line Right-of-Ways Legend

A Byron Units I& 2 s

-

0 Substation Transmission Line 2-Mile Buffer T-lines 0 1 2 4 Illinois Byron and Braidwood Stations, Units 1 and 2 Page C-8 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence Figure 3 Byron South Transmission Line Right-of-way Legend

A Byron Units I & 2 5

- Substation Transmission Line 0 2-Mile Buffer T-lines 0 1 2 4 Illinois Byron and Braidwood Stations, Units 1 and 2 Page C-9 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence Applicant: Exelon Generation Company LLC IDNR Project #: 1210838 Contact: Robert J Tarr Date: 0311612012 Address: 200 Exelon Way Kennett Square, PA 19348 Project: Renewal of Facility Operating Licenses by the U.S. Nuclear Regulatory Commission Address: (NRC) for Byron Generating Station, Units 1 and 2, Station property 4450 N German Church Road, Byron

==

Description:==

Exelon Generation Company LLC seeks renewal of the NRC operating licenses for Byron Generating Station, Units 1 and 2, in order to provide an option for power generation capability beyond the term of the current operating licenses, as such needs may be determined by State, utility, and where authorized, Federal (other than the NRC) decision makers. License renewal will authorize no new construction or operational changes either at the Station or along the associated electricity transmission line rights-of-way.

Natural Resource Review Results This project was submitted for information only. It is not a consultation under Part 1075.

The Illinois Natural Heritage Database shows the following protected resources may be in the vicinity of the project location:

Byron Dragway Prairie INAl Site Commonwealth Edison Prairie INAl Site Jarrett Prairie INAl Site Byron Dragway Prairie Natural Heritage Landmark Jarrett Prairie Nature Preserve Black Sandshell (Ligumia recta)

Redroot (Ceanothus herbaceus)

Location The applicant IS responsible for the accuracy of the locatlon subm~tted i for the project.

County: Ogle Township, Range, Sect~on:

24N, IOE, 10 24N, IOE, 11 - -.-

24N, IOE, 12 24N, IOE, 13 I 24N, IOE, 14 24N, IOE, 15 24N, IOE, 22 24N, IOE, 23 24N, IOE, 24 24N, I I E , 7 24N, I I E , 18 24N, I l E , 19 Page 1 of 2 Byron and Braidwood Stations, Units 1 and 2 Page C-10 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence IDNR Project Number. 1210838 IL Department of Natural R e s o u r c e s Contact Impact Assessment Section 217-785-5500 Division of Ecosystems & Environment Disclaimer The lllinols Natural Heritage Database cannot provide a conclusive statement on the presence, absence, or condition of natural resources In Illinois. This review reflects the information existing in the Database at the time of this inquiry, and should not be regarded as a final statement on the site being considered, nor should it be a substitute for detalled site surveys or field surveys required for environmental assessments. If additional protected resources are encountered dunng the project's implementatron, complrance with applrcable statutes and regulations is required.

Terms of Use By using this webslte, you acknowledge that you have read and agree to these terms. These terms may be revised by IDNR as necessary. If you continue to use the EcoCAT application after we post changes to these terms, it will mean that you accept such changes. If at any time you do not accept the Terms of Use, you may not continue to use the website.

1. The IDNR EcoCAT website was developed so that units of local government, state agencies and the public could request information or begin natural resource consultations on-line for the lllinois Endangered Species Protection Act, Illinois Natural Areas Preservation Act, and Illinois Interagency Wetland Policy Act, EcoCAT uses databases, Geographic lnformation System mapping, and a set of programmed decision rules to determine if proposed actions are in the vicinity of protected natural resources. By indicating your agreement to the Terms of Use for this application, you warrant that you will not use this web site for any other purpose.

2. Unauthorized attempts to upload, download, or change information on this website are strictly prohibited and may be punishable under the Computer Fraud and Abuse Act of 1986 andlor the National lnformation Infrastructure Protection Act.

3. IDNR reserves the right to enhance, modify, alter, or suspend the website at any time without notice, or to terminate or restrict access.

Security EcoCAT operates on a state of Illinois computer system. We may use software to monitor traffic and to identify unauthorized attempts to upload, download, or change information, to cause harm or otherwise to damage this site.

Unauthorized attempts to upload, download, or change information on this server is strictly prohibited by law.

Unauthorized use, tampering with or modification of this system, including supporting hardware or software, may subject the violator to criminal and civil penalties. In the event of unauthorized intrusion, all relevant information regarding possible violation of law may be provided to law enforcement officials.

Privacy EcoCAT generates a public record subject to disclosure under the Freedom of lnformation Act. Otherwise, IDNR uses the information submitted to EcoCAT solely for internal tracking purposes.

Page 2 of 2 Byron and Braidwood Stations, Units 1 and 2 Page C-11 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence Applicant: Exelon Generation Company LLC IDNR Project #: 1305771 Contact: Robert J Tan Date: 10/30/2012 Address: 200 Exelon Way Kennett Square, PA 19348 Project: Renewal of Facility Operating Licenses by the U.S. Nuclear Regulatory Commission Address: (NRC) for Byron Generating Station, Units 1 and 2, Blowdown Area on River 4450 N German Church Road, Byron

Description:

Exelon Generation Company LLC seeks renewal of the NRC operating licenses for Byron Generating Station, Units 1 and 2, in order to provide an option for power generation capability beyond the term of the current operating licenses, as such needs may be determined by State, utility, and where authorized.

Federal (other than the NRC) decision makers. License renewal will authorize no new construction or operational changes either at the Station or along the associated electricity transmission line rights-of-way.

Natural Resource Review Results This project was submitted for information only. It is not a consultation under Part 1075.

The Illinois Natural Heritage Database shows the following protected resources may be in the vicinity of the project location:

Byron Dragway Prairie INAl Site Commonwealth Edison Prairie lNAl Site Jarrett Prairie lNAl Site Byron Dragway Prairie Natural Heritage Landmark Jarrett Prairie Nature Preserve Black Sandshell (Ligumia recta)

Downy Yellow Painted Cup (Castilleja sessiliflora)

Prairie Bush Clover (Lespedeza leptostachya)

Wooly Milkweed (Asclepias lanuginosa)

Location The applicant is responsible for the accuracy of the location submitted for the project.

County: Ogle Township, Range, Section:

24N, IOE, 1 24N, IOE, 2 24N, IOE, 3 24N, IOE, 9 24N, IOE, 10 24N, IOE, II 24N, IOE, 12 24N, IOE, 14 24N, IOE, 15 24N, IOE, 16 24N, I I E , 6 25N, IOE, 35 Page 1 of 2 Byron and Braidwood Stations, Units 1 and 2 Page C-12 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence IDNR Project Number: 1355771 IL Department of Natural Resources Contact Impact Assessment Section 217-785-5500 Division of Ecosystems & Environment Disclaimer The Illinois Natural Heritage Database cannot provide a conclusive statement on the presence, absence, or condition of natural resources in Illinois. This review reflects the information existing in the Database at the time of this inquiry, and should not be regarded as a final statement on the site being considered, nor should it be a substitute for detailed site surveys or field surveys required for environmental assessments. If additional protected resources are encountered during the project's implementation, compliance with applicable statutes and regulations is required.

Terms of Use By using this website, you acknowledge that you have read and agree to these terms. These terms may be revised by IDNR as necessary. If you continue to use the EcoCAT application after we post changes to these terms, it will mean that you accept such changes. If at any time you do not accept the Terms of Use, you may not continue to use the website.

1. The IDNR EcoCAT website was developed so that units of local government, state agencies and the public could request information or begin natural resource consultations on-line for the Illinois Endangered Species Protection Act, lllinois Natural Areas Preservation Act, and Illinois Interagency Wetland Policy Act. EcoCAT uses databases, Geographic lnformation System mapping, and a set of programmed decision rules to determine if proposed actions are in the vicinity of protected natural resources. By indicating your agreement to the Terms of Use for this application, you warrant that you will not use this web site for any other purpose.

2. Unauthorized attempts to upload, download, or change information on this website are strictly prohibited and may be punishable under the Computer Fraud and Abuse Act of 1986 andlor the National lnformation Infrastructure Protection Act.

3. IDNR reserves the right to enhance, modify, alter, or suspend the website at any time without notice, or to terminate or restrict access.

Security EcoCAT operates on a state of lllinois computer system. We may use software to monitor traffic and to identify unauthorized attempts to upload, download, or change information, to cause harm or otherwise to damage this site.

Unauthorized attempts to upload, download, or change information on this server is strictly prohibited by law.

Unauthorized use, tampering with or modification of this system, including supporting hardware or software, may subject the violator to criminal and civil penalties. In the event of unauthorized intrusion, all relevant information regarding possible violation of law may be provided to law enforcement officials.

Privacy EcoCAT generates a public record subject to disclosure under the Freedom of lnformation Act. Otherwise, IDNR uses the information submitted to EcoCAT solely for internal tracking purposes.

Page 2 of 2 Byron and Braidwood Stations, Units 1 and 2 Page C-13 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence Applicant: Exelon Generation Company LLC IDNR Project #: 1210840 Contact: Robert J Tarr Date: 0311612012 Address: 200 Exelon Way Kennett Square, PA 19348 Project: Renewal of Facility Operating Licenses by the U.S. Nuclear Regulatory Commission Address: (NRC) for Byron Generating Station, Units 1 and 2, Cherry Valley Transmission Segment 1

4450 N German Church Road, Byron

Description:

Exelon Generation Company LLC seeks renewal of the NRC operating licenses for Byron Generating Station, Units 1 and 2, in order to provide an option for power generation capability beyond the term of the current operating licenses, as such needs may be determined by State, utility, and where authorized, Federal (other than the NRC) decision makers. License renewal will authorize no new construction or operational changes either at the Station or along the associated electricity transmission line rights-of-way.

Natural Resource Review Results This project was submiffedfor informationonly. It is not a consultation under Part 1075.

The Illinois Natural Heritage Database shows the following protected resources may be in the vicinity of the project location:

Commonwealth Edison Prairie INAl Site Location The applicant is responsible for the accuracy of the location submitted for the project.

County: Ogle 4 Township, Range, Sect~on:

24N, IOE, 13 24N, IOE, 24 24N, I I E , 15 24N, l l E , 16 24N, 11E, 17 24N, I I E , 18 24N, 1IE, 19 24N, 11E, 20 24N, 1IE, 21 24N, I I E , 22 IL Department of Natural Resources Contact Impact Assessment Section 217-785-5500 Division of Ecosystems & Environment Page 1 of 2 Byron and Braidwood Stations, Units 1 and 2 Page C-14 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence IDNR Project Number. 1210840 Disclaimer The lllrnois Natural Heritage Database cannot provide a conclusive statement on the presence, absence, or condition of natural resources in Illinois. This review reflects the information existing in the Database at the time of this inquiry, and should not be regarded as a final statement on the site being considered, nor should it be a substitute for detailed site surveys or field surveys required for environmental assessments. If additional protected resources are encountered during the project's implementation, complrance with applicable statutes and regulations is required.

Terms of Use By using this website, you acknowledge that you have read and agree to these terms. These terms may be revised by IDNR as necessary. If you continue to use the EcoCAT application after we post changes to these terms, it will mean that you accept such changes. If at any time you do not accept the Terms of Use, you may not continue to use the website.

1. The IDNR EcoCAT website was developed so that units of local government, state agencies and the public could request information or begin natural resource consultations on-line for the Illinois Endangered Species Protection Act, Illinois Natural Areas Preservation Act, and Illinois Interagency Wetland Policy Act. EcoCAT uses databases, Geographic lnformation System mapping, and a set of programmed decision rules to determine if proposed actions are in the vicinity of protected natural resources. By indicating your agreement to the Terms of Use for this application, you warrant that you will not use this web site for any other purpose.

2. Unauthorized attempts to upload, download, or change rnformation on this website are strictly prohibited and may be punishable under the Computer Fraud and Abuse Act of 1986 andlor the National lnformation Infrastructure Protection Act.

3. IDNR reserves the right to enhance, modify, alter, or suspend the website at any time without notice, or to terminate or restrict access.

Security EcoCAT operates on a state of lllinois computer system. We may use software to monitor traffic and to identify unauthorized attempts to upload, download, or change information, to cause harm or othewise to damage this site.

Unauthorized attempts to upload, download, or change information on this server is strictly prohibited by law.

Unauthorized use, tampering with or modification of this system, including supporting hardware or software, may subject the violator to criminal and civil penalties. In the event of unauthorized intrusion, all relevant information regarding possible violation of law may be provided to law enforcement officials.

Privacy EcoCAT generates a public record subject to disclosure under the Freedom of lnformation Act. Otherwise, IDNR uses the information submitted to EcoCAT solely for internal tracking purposes.

Page 2 of 2 Byron and Braidwood Stations, Units 1 and 2 Page C-15 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence Applicant: Exelon Generation Company LLC IDNR Project #: 12 10841 Contact: Robert J Tarr Date: 0311612012 Address: 200 Exelon Way Kennett Square, PA 19348 Project: Renewal of Facility Operating Licenses by the U.S. Nuclear Regulatory Commission Address: (NRC) for Byron Generating Station, Units 1 and 2, Cherty Valley Transmission Segment 2

4450 N German Church Road, Byron

Description:

Exelon Generation Company LLC seeks renewal of the NRC operating licenses for Byron Generating Station, Units 1 and 2, in order to provide an option for power generation capability beyond the term of the current operating licenses, as such needs may be determined by State, utility, and where authorized, Federal (other than the NRC) decision makers. License renewal will authorize no new construction or operational changes either at the Station or along the associated electricity transmission line rights-of-way.

Natural Resource Review Results This project was submitted for informationonly. It is not a consultation under Part 1075.

The Illinois Natural Heritage Database shows the following protected resources may be in the vicinity of the project location:

Beach Cemetery Prairie INAI Site Beach Cemetery Prairie Nature Preserve Location The applicant is responsible for the accuracy of the location submitted for the project.

County: Ogle Township, Range, Section:

24N, l l E , 13 24N, I l E , 14 24N, l l E , 15 24N, 11E, 22 24N, l l E , 23 24N, 11E, 24 42N, IE, 20 42N, IE, 29 42N, 1E, 30 42N, 1E, 31 42N, IE, 32 IL Department of Natural Resources Contact Impact Assessment Section 217-785-5500 Division of Ecosystems & Environment Page 1 of 2 Byron and Braidwood Stations, Units 1 and 2 Page C-16 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence IDNR Project Number: 1210841 Disclaimer The lllinois Natural Heritage Database cannot provide a conclusive statement on the presence, absence, or condition of natural resources in Illinois. This review reflects the information existing in the Database at the time of this inquiry, and should not be regarded as a final statement on the site betng considered, nor should it be a substitute for detailed srte surveys or field surveys required for environmental assessments. If additional protected resources are encountered during the project's implementation, compliance wlth applicable statutes and regulations is required.

Terms of Use By using this website, you acknowledge that you have read and agree to these terms. These terms may be revised by IDNR as necessary. If you continue to use the EcoCAT application after we post changes to these terms, rt w~ll mean that you accept such changes. If at any time you do not accept the Terms of Use, you may not contrnue to use the website.

1. The IDNR EcoCAT website was developed so that units of local government, state agencies and the public could request information or begin natural resource consultations on-line for the lllinois Endangered Species Protection Act, lllinois Natural Areas Preservation Act, and lllinois Interagency Wetland Policy Act. EcoCAT uses databases, Geographic lnformat~onSystem mapping, and a set of programmed decls~onrules to determrne if proposed actions are In the vicinity of protected natural resources. By indicatrng your agreement to the Terms of Use for this applicatron, you warrant that you will not use this web site for any other purpose.

2. Unauthorized attempts to upload, download, or change information on this website are strictly prohibited and may be punishable under the Computer Fraud and Abuse Act of 1986 andlor the National lnformation Infrastructure Protection Act.

3. IDNR reserves the right to enhance, modify, alter, or suspend the website at any time without notice, or to terminate or restrict access.

Security EcoCAT operates on a state of lllinois computer system. We may use software to monitor traffic and to identify unauthorized attempts to upload, download, or change information, to cause harm or othetwise to damage this site.

Unauthorized attempts to upload, download, or change information on this server is strictly prohibited by law.

Unauthorized use, tampering with or modification of this system, including supporting hardware or software, may subject the violator to criminal and civil penalties. In the event of unauthorized intrusion, all relevant information regarding possible violation of law may be provided to law enforcement officials.

Privacy EcoCAT generates a public record subject to disclosure under the Freedom of lnformation Act. Otherwise, IDNR uses the information submitted to EcoCAT solely for internal tracking purposes.

Page 2 of 2 Byron and Braidwood Stations, Units 1 and 2 Page C-17 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence Applicant: Exelon Generation Company LLC IDNR Project #: 1210842 Contact: Robert J Tarr Date: 0311612012 Address: 200 Exelon Way Kennett Square, PA 19348 Project: Renewal of Facility Operating Licenses by the U.S. Nuclear Regulatory Commission Address: (NRC) for Byron Generating Station, Units 1 and 2, Cherry Valley Transmission Segment 3

4450 N German Church Road, Byron

Description:

Exelon Generation Company LLC seeks renewal of the NRC operating licenses for Byron Generating Station, Units 1 and 2, in order to provide an option for power generation capability beyond the term of the current operating licenses, as such needs may be determined by State, utility, and where authorized, Federal (other than the NRC) decision makers. License renewal will authorize no new construction or operational changes either at the Station or along the associated electricity transmission line rights-of-way.

Natural Resource Review Results This project was submitted for information only. It is not a consultation under Part 1075.

The Illinois Natural Heritage Database shows the following protected resources may be in the vicinity of the project location:

Beach Cemetery Prairie INAl Site Beach Cemetery Prairie Nature Preserve Location The applicant is responsible for the accuracy of the location submitted for the project.

County: Ogle Township, Range, Section: ., , . ....

1E, 14 42N, 1E, 15 IE, 16 42N, 1E, 20 I E , 21 42N, I E , 22 I E , 28 42N, I E , 29 42N, IE, 32 IL Department of Natural Resources Contact Impact Assessment Section 217-785-5500 Division of Ecosystems & Environment Page 1 of 2 Byron and Braidwood Stations, Units 1 and 2 Page C-18 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence Disclaimer The Hlinois Natural Heritage Database cannot provide a conclusive statement on the presence, absene, or condition of natural resources in lllinois. This review reflects the information existing in the Database at the time of thrs inquiry, and should not be regarded as a final statement on the site being considered, nor should it be a subst~lutefor detailed site suweys or field surveys required for environmental assessments. If addit~onalproteded resources are encountered dursng the project's smplementation, compliance with applicable statutes and regulatrons is required.

Terms of Use By using this website, you acknowledge that you have read and agree to these terms, These terms may be revised by IDNR as necessary. If you continue to use the EcoCAT application after we post changes to these terms, it will mean that you accept such changes. If at any time you do not accept the Terms of Use, you may not continue to use the website.

1. The IDNR EcoCAT websrte was developed so that unlts of local government, state agencies and the public could request lnformation or begln natural resource consultations on-line for the Illinois Endangered Spec~esProtection Act, lilinois Natural Areas Preservation Act, and Illinois Interagency Wetland Policy Act. EcoCAT uses databases, Geographic Information System mapping, and a set of programmed decision rules to determine if proposed actions are in the vidnity of protected natural resources. By indicating your agreement to the Terms of Use for this application, you warrant that you will not use this web site for any other purpose.

2. Unauthorized attempts to upload, download, or change information on this website are strictly prohibited and may be punishable under the Computer Fraud and Abuse Act of 1986 andlor the National lnformation Infrastructure Protection Act.

3. IDNR reserves the right to enhance, modify, alter, or suspend the website at any time without notice, or to termmate or restrict access.

Security EcoCAT operates on a state of Illinois computer system. We may use software to monitor traffic and to identify unauthorized attempts to upload, download, or change information, to cause harm or otherwise to damage this site.

Unauthorized attempts to upload, download, or change information on this server is strictly prohibited by law.

Unauthorized use, tampering with or modification of this system, including supporting hardware or software, may subject the violator to criminal and civil penalties. In the event of unauthorized intrusion, all relevant information regarding possible violation of law may be provided to law enforcement officials.

Privacy EcoCAT generates a public record subject to disclosure under the Freedom of lnformation Act. Otherwise, IDNR uses the information submitted to EcoCAT solely for internal tracking purposes.

Page 2 of 2 Byron and Braidwood Stations, Units 1 and 2 Page C-19 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence Applicant: Exelon Generation Company LLC IDNR Project #: 1210843 Contact: Robert J Tarr Date: 0311612012 Address: 200 Exelon Way Kennett Square, PA 19348 Project: Renewal of Facility Operating Licenses by the U.S. Nuclear Regulatory Commission Address: (NRC) for Byron Generating Station, Units 1 and 2, Cherry Valley Transmission Segment 4

4450 N German Church Road, Byron

==

Description:==

Exelon Generation Company LLC seeks renewal of the NRC operating licenses for Byron Generating Station, Units 1 and 2, in order to provide an option for power generation capability beyond the term of the current operating licenses, as such needs may be determined by State, utility, and where authorized, Federal (other than the NRC) decision makers. License renewal will authorize no new construction or operational changes either at the Station or along the associated electricity transmission line rights-of-way.

Natural Resource Review Results This project was submitted for information only. It is not a consultation under Part 1075.

The Illinois Natural Heritage Database shows the following protected resources may be in the vicinity of the project location:

Winquist Prairie INAI Site Winquist Prairie Natural Heritage Landmark Prairie Bush Clover (Lespedeza leptostachya)

Location The applicant IS responsible for the accuracy of the locatton subm~tted for the project.

County: Ogle Township, Range, Section: II 42N, IE, 1 42N, IE, 2 i

42N, 1E, 11 42N, 1E, 12 42N, IE, 14 42N, 2E, 6 County: Winnebago Township, Range, Section:

Page 1 of 2 Byron and Braidwood Stations, Units 1 and 2 Page C-20 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence IDNR Project Number 7210843 IL Department:of Natural Resources Contact Impact Assessment Sect~on 217-785-5500 Divrsion of Ecosystems & Environment Disclaimer The lllrnors Natural Heritage Database cannot provrde a conclusrve statement on the presence, absence, or condition of natural resources in Illinois. This revrew reflects the information exrstrng in the Database at the trme of this inquiry, and should not be regarded as a final statement on the srte being consrdered, nor should it be a substitute for detalled site surveys or freld surveys requrred for envrronmental assessments. If addrtional protected resources are encountered during the project's implementation, compliance wrth applicable statutes and regulations is requrred Terms of Use By using this website, you acknowledge that you have read and agree to these terms These terms may be revised by IDNR as necessary If you continue to use the EcoCAT applicatron after we post changes to these terms, it will mean that you accept such changes If at any time you do not accept the Terms of Use, you may not continue to use the website 1 The IDNR EcoCAT website was developed so that unrts of local government, state agencres and the public could request information or begrn natural resource consultatrons on-lrne for the lllinors Endangered Specres Protection Act, lllrnois Natural Areas Preservat~onAct, and lllinois interagency Wetland Policy Act EcoCAT uses databases, Geographrc lnformation System mapping, and a set of programmed decrsion rules to determrne if proposed actions are in the vicinrty of protected natural resources By rndrcating your agreement to the Terms of Use for this applrcatron, you warrant that you will not use this web site for any other purpose.

2. Unauthorized attempts to upload, download, or change information on this website are strictly prohibited and may be punishable under the Computer Fraud and Abuse Act of 1986 and/or the National lnformation Infrastructure Protection Act.

3, IDNR reserves the right to enhance, modify, alter, or suspend the website at any time without notice, or to terminate or restrict access.

Security EcoCAT operates on a state of Illinois computer system. We may use software to monitor traffic and to identify unauthorized attempts to upload, download, or change information, to cause harm or otherwise to damage this site.

Unauthorized attempts to upload, download, or change information on this server is strictly prohibited by law.

Unauthorized use, tampering with or modification of this system, including supporting hardware or software, may subject the violator to criminal and civil penalties. In the event of unauthorized intrusion, all relevant information regarding possible violation of law may be provided to law enforcement officials.

Privacy EcoCAT generates a public record subject to disclosure under the Freedom of lnformation Act. Otherwise, IDNR uses the information submitted to EcoCAT solely for internal tracking purposes.

Page 2 of 2 Byron and Braidwood Stations, Units 1 and 2 Page C-21 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence Applicant: Exelon Generation Company LLC IDNR Project #: 12 10845 Contact: Robert J Tarr Date: 0311612012 Address: 200 Exelon Way Kennett Square, PA 19348 Project: Renewal of Facility Operating Licenses by the U.S. Nuclear Regulatory Commission Address: (NRC) for Byron Generating Station, Units 1 and 2, Cherry Valley Transmission Segment 5

4450 N German Church Road, Byron

Description:

Exelon Generation Company LLC seeks renewal of the NRC operating licenses for Byron Generating Station, Units 1 and 2, in order to provide an option for power generation capability beyond the term of the current operating licenses, as such needs may be determined by State, utility, and where authorized, Federal (other than the NRC) decision makers. License renewal will authorize no new construction or operational changes either at the Station or along the associated electricity transmission line rights-of-way.

Natural Resource Review Results This project was submitted for information only. It is not a consultation under Part 1075.

The Illinois Natural Heritage Database shows the following protected resources may be in the vicinity of the project location:

Kishwaukee River INAI Site Kishwaukee River South Branch INAI Site Winquist Prairie lNAl Site Winquist Prairie Natural Heritage Landmark Black Sandshell (Ligumia recta)

Black Sandshell (Ligumia recta)

Gravel Chub (Erimystax x-punctatus)

Prairie Bush Clover (Lespedeza leptostachya)

Location The applicant is responsible for the accuracy of the location submitted for the project.

County: Ogle Township, Range, Section:

42N, 2E, 5 County: Winnebago 42N, 2E, 6

.: .'-WE,

+/

'

i Township, Range, Section: 4i:* f..:f-#

43N, 2E, 21 43N, 2E,23 43N, 2E, 22 43N, 2E, 26 - -2

-

.

'7

+A Page 1 of 2 Byron and Braidwood Stations, Units 1 and 2 Page C-22 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence lDNR Project Number: 1210845 tL Department of Natural Resources Contact Impact Assessment Section 217-785-5500 Division of Ecosystems & Environment Disclaimer The lllinois Natural Heritage Database cannot provide a conclusive statement on the presence, absence, or cond~tionof natural resources in Illrnors. This review reflects the informat~onexisting in the Database at the time of th~sinquiry, and should not be regarded as a final statement on the site berng considered, nor should it be a substitute for detailed site surveys or field surveys required for environmental assessments. If additional protected resources are encountered during the project's implementation, compliance with applicable statutes and regulations is required.

Terms of Use By using this website, you acknowledge that you have read and agree to these terms. These terms may be revised by IDNR as necessary. If you continue to use the EcoGAT application after we post changes to these terms, it will mean that you accept such changes. If at any time you do not accept the Terms of Use, you may not continue to use the website.

1. The IDNR EcoCAT website was developed so that units of local government, state agencies and the public could request information or begin natural resource consultations on-line for the lllinois Endangered Species Protection Act, lllinois Natural Areas Preservation Act, and lllinois Interagency Wetland Policy Act. EcoCAT uses databases, Geographic lnformation System mapping, and a set of programmed decision rules to determine if proposed actions are in the vicinity of protected natural resources. By indicating your agreement to the Terms of Use for this application, you warrant that you will not use this web site for any other purpose.

2. Unauthorized attempts to upload, download, or change information on this website are strictly prohibited and may be punishable under the Computer Fraud and Abuse Act of 1986 andlor the National lnformation Infrastructure Protection Act.

3. IDNR reserves the right to enhance, modify, alter, or suspend the website at any time without notice, or to terminate or restrict access.

Security EcoCAT operates on a state of lllinois computer system. We may use software to monitor traffic and to identify unauthorized attempts to upload, download, or change information, to cause harm or otherwise to damage this site.

Unauthorized attempts to upload, download, or change information on this server is strictly prohibited by law.

Unauthorized use, tampering with or modification of this system, including supporting hardware or software, may subject the violator to criminal and civil penalties. In the event of unauthorized intrusion, all relevant information regarding possible violation of law may be provided to law enforcement officials.

Privacy EcoCAT generates a public record subject to disclosure under the Freedom of lnformation Act. Otherwise, IDNR uses the information submitted to EcoCAT solely for internal tracking purposes.

Page 2 of 2 Byron and Braidwood Stations, Units 1 and 2 Page C-23 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence Applicant: Exelon Generation Company LLC IDNR Project #: 1210846 Contact: Robert J Tarr Date: 0311612012 Address: 200 Exelon Way Kennett Square, PA 19348 Project: Renewal of Facility Operating Licenses by the U.S. Nuclear Regulatory Commission Address: (NRC) for Byron Generating Station, Units 1 and 2, Cherry Valley Transmission Segment 6

4450 N German Church Road, Byron

Description:

Exelon Generation Company LLC seeks renewal of the NRC operating licenses for Byron Generating Station, Units 1 and 2, in order to provide an option for power generation capability beyond the term of the current operating licenses, as such needs may be determined by State, utility, and where authorized, Federal (other than the NRC) decision makers. License renewal will authorize no new construction or operational changes either at the Station or along the associated electricity transmission line rights-of-way.

Natural Resource Review Results This project was submitted for information only. It is not a consultation under Part 1075.

The Illinois Natural Heritage Database shows the following protected resources may be in the vicinity of the project location:

Kishwaukee River INAl Site Kishwaukee River South Branch INAl Site Black Sandshell (Ligumia recta)

Black Sandshell (Ligumia recta)

Gravel Chub (Erimystax x-punctatus)

Ground Juniper (Juniperus communis)

Location The applicant is responsible for the accuracy of the location submitted for the project.

County: Winnebago Township, Range, Section:

43N, 2E, 10 43N, 2E, 11 43N, 2E, 14 43N, 2E, 15 43N, 2E, 22 43N, 2E, 23 43N, 2E, 26 43N, 2E, 27 Page 1 of 2 Byron and Braidwood Stations, Units 1 and 2 Page C-24 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence IDNR Project Number: 1210846 IL Department of Natural Resources Contact Impact Assessment Section 217-785-5500 Division of Ecosystems & Environment Disclaimer The lllinois Natural Heritage Database cannot provide a conclusive statement on the presence, absence, or condition of natural resources in Illinois. This review reflects the information existing in the Database at the time of this inquiry, and should not be regarded as a final statement on the site being considered, nor should it be a substitute for detailed site surveys or field surveys required for environmental assessments. If additional protected resources are encountered during the project's implementation, compliance with applicable statutes and regulations is required.

Terms of Use By using this website, you acknowledge that you have read and agree lo these terms. These terms may be revised by IDNR as necessary. If you continue to use the EcoCAT application after we post changes to these terms, it will mean that you accept such changes, If at any time you do not accept the Terms of Use, you may not continue to use the website.

1. The IDNR EcoCAT website was developed so that units of local government, state agencies and the public could request information or begin natural resource consultations an-line for the Illinois Endangered Species Protection Act, lllinois Natural Areas Preservation Act, and lllinois Interagency Wetland Policy Act. EcoCAT uses databases, Geographic lnformation System mapping, and a set of programmed decision rules to determine if proposed actions are in the vicinity of protected natural resources. By indicating your agreement to the Terms of Use for this application, you warrant that you will not use this web site for any other purpose.

2. Unauthorized attempts to upload, download, or change information on this website are strictly prohibited and may be punishable under the Computer Fraud and Abuse Act of 1986 andlor the National lnformation Infrastructure Protection Act.

3. IDNR reserves the right to enhance, modify, alter, or suspend the website at any time without notice, or to terminate or restrict access.

Security EcoCAT operates on a state of Illinois computer system, We may use software to monitor traffic and to identify unauthorized attempts to upload, download, or change information, to cause harm or otherwise to damage this site.

Unauthorized attempts to upload, download, or change information on this server is strictly prohibited by law.

Unauthorized use, tampering with or modification of this system, including supporting hardware or software, may subject the violator to criminal and civil penalties. In the event of unauthorized intrusion, all relevant information regarding possible violation of law may be provided to law enforcement officials.

Privacy EcoCAT generates a public record subject to disclosure under the Freedom of lnformation Act. Otherwise, IDNR uses the information submitted to EcoCAT solely for internal tracking purposes.

Page 2 of 2 Byron and Braidwood Stations, Units 1 and 2 Page C-25 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence Applicant: Exelon Generation Company LLC IDNR Project #: 1210870 Contact: Robert J Tarr Date: 03/16/2012 Address: 200 Exelon Way Kennett Square, PA 19348 Project: Renewal of Facility Operating Licenses by the U.S. Nuclear Regulatory Commission Address: (NRC) for Byron Generating Station, Units 1 and 2, South Transmission Segment 1 4450 N German Church Road, Byron

Description:

Exelon Generation Company LLC seeks renewal of the NRC operating licenses for Byron Generating Station, Units 1 and 2, in order to provide an option for power generation capability beyond the term of the current operating licenses, as such needs may be determined by State, utility, and where authorized, Federal (other than the NRC) decision makers. License renewal will authorize no new construction or operational changes either at the Station or along the associated electricity transmission line rights-of-way.

Natural Resource Review Results This project was submitted for information only. It is not a consultation under Part 1075.

The Illinois Natural Heritage Database shows the following protected resources may be in the vicinity of the project location:

Commonwealth Edison Prairie INAl Site Location The appl~cantIS responsrble for the IF-4 .

accuracy of the locat~onsubmitted for the project.

County: Ogle Township, Range, Sect~on:

23N, 10E, 1 24N, 10E, 13 24N, 10E, 24 24N, IOE, 25 24N, 10E, 35 24N, 10E, 36 IL Department of Natural Resources Contact Impact Assessment Section 217-785-5500 Division of Ecosystems & Environment Page 1 of 2 Byron and Braidwood Stations, Units 1 and 2 Page C-26 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence IDNR Project Number 1210870 Disclaimer The lllinois Natural Heritage Database cannot provide a conclusive statement on the presence, absence, or condition of natural resources in Illinois. This review reflects the information existing in the Database at the time of this inquiry, and should not be regarded as a final statement on the site being considered, nor should it be a substitute for detailed site surveys or field surveys required for environmental assessments. If additional protected resources are encountered during the project's implementation, compliance with applicable statutes and regulations is required.

Terms of Use By using this website, you acknowledge that you have read and agree to these terms. These terms may be revised by IDNR as necessary. If you continue to use the EcoCAT application after we post changes to these terms, it will mean that you accept such changes. If at any time you do not accept the Terms of Use, you may not continue to use the website.

1. The IDNR EcoCAT website was developed so that units of local government, state agencies and the public could request information or begin natural resource consultations on-line for the lllinois Endangered Species Protection Act, lllinois Natural Areas Preservation Act, and Illinois Interagency Wetland Policy Act. EcoCAT uses databases, Geographic lnformation System mapping, and a set of programmed decision rules to determine if proposed actions are in the vicinity of protected natural resources. By indicating your agreement to the Terms of Use for this application, you warrant that you will not use this web site for any other purpose.

2. Unauthorized attempts to upload, download, or change information on this website are strictly prohibited and may be punishable under the Computer Fraud and Abuse Act of 1986 and/or the National lnformation Infrastructure Protection Act.

3. IDNR reserves the right to enhance, modify, alter, or suspend the website at any time without notice, or to terminate or restrict access.

Security EcoCAT operates on a state of lllinois computer system. We may use software to monitor traffic and to identify unauthorized attempts to upload, download, or change information, to cause harm or otherwise to damage this site.

Unauthorized attempts to upload, download, or change information on this server is strictly prohibited by law.

Unauthorized use, tampering with or modification of this system, including supporting hardware or software, may subject the violator to criminal and civil penalties. In the event of unauthorized intrusion, all relevant information regarding possible violation of law may be provided to law enforcement officials.

Privacy EcoCAT generates a public record subject to disclosure under the Freedom of Information Act. Otherwise, IDNR uses the information submitted to EcoCAT solely for internal tracking purposes.

Page 2 of 2 Byron and Braidwood Stations, Units 1 and 2 Page C-27 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence Applicant: Exelon Generation Company LLC IDNR Project #: 1210872 Contact: Robert J Tarr Date: 03/16/2012 Address: 200 Exelon Way Kennett Square, PA 19348 Project: Renewal of Facility Operating Licenses by the U.S. Nuclear Regulatory Commission Address: (NRC) for Byron Generating Station, Units 1 and 2, South Transmission Segment 2 4450 N German Church Road, Byron

Description:

Exelon Generation Company LLC seeks renewal of the NRC operating licenses for Byron Generating Station, Units 1 and 2, in order to provide an option for power generation capability beyond the term of the current operating licenses, as such needs may be determined by State, utility, and where authorized, Federal (other than the NRC) decision makers. License renewal will authorize no new construction or operational changes either at the Station or along the associated electricity transmission line rights-of-way.

Natural Resource Review Results This project was submitted for information only. If is not a consultation under Part 1075.

The Illinois Natural Heritage Database shows the following protected resources may be in the vicinity of the project location:

Kyte River INAl Site Kyte River Bottoms lNAl Site Pine Rock INAl Site Kyte River Bottoms Land And Water Reserve Pine Rock Nature Preserve Black Sandshell (Ligumia recta)

Gravel Chub (Erimystax x-punctatus)

Location The applicant is responsible for the accuracy of the location submitted for the project.

County: Ogle Township, Range, Section:

23N, 10E, 1 23N, 10E, 12 23N, 10E, 13 23N, 10E, 24 23N, IOE, 25 23N, 10E, 36 23N, 1l E , 6 23N, 11E, 7 23N, l l E , 18 23N, l l E , 19 23N, l l E , 30 23N, 11E, 31 Page 1 of 2 Byron and Braidwood Stations, Units 1 and 2 Page C-28 License Renewal Application

Byron Station Environmental Report Appendix C - Special Status Species Correspondence lDNR Project Number: f210872 IL Department of Natural Resources Contact Impact Assessment Section 217-785-5500 Division of Ecosystems & Environment Disclaimer The lllinois Natural Heritage Database cannot provide a conclusive statement on the presence, absence, or condition of natural resources in Illinois. This review reflects the information existing in the Database at the time of thrs inquiry, and should not be regarded as a final statement on the srte being considered, nor should it be a substitute for detalled site surveys or field surveys requrred for envrronmental assessments. If additional protected resources are encountered during the project's implementation, compliance with applicable statutes and regulations is required.