UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 8 1595WYNKOOP STREET DENVER. CO 80202-1129 Phone 800-227-8917 http://www.epa.gov/region08 

### Concurrence Copy Ref: 8P-AR 

## SEP 1 1 2009 The Honorable John Hoeven Governor ofNorth Dakota 600 

### E. Boulevard Avenue Dept. 101 Bismarck, ND 58505-0001
Dear GovernorHoeven:
I am writing to provide you with guidance onthe process for designating areas underthe 2008 revised National Ambient Air Quality Standard (NAAQS) for lead. In orderto ensure that public health and welfare are protected, the U.S. Environmental Protection Agency (EPA) revised the leadNAAQS on October 15,2008 (73 FR 66964; November 12,2008). The new primary lead standard was lowered from 1.5 micrograms per cubic meter (ug/m3) set in 1978, to 0.15 uglm3. This new standard is based onthe most recent scientific studies andprovides protection against adverse health effects associated with exposure to lead. To provide increased protection against lead-related welfare effects, EPA revised the secondary standard to be identical in all respects to the revised primary standard.
The next step in implementing the revised lead NAAQS is for statesto recommendto EPA an air quality designation for their state. The process for designations, following promulgation ofa new orrevised NAAQS, is contained in section 1 07(d)(1) ofthe Clean Air Act (Act). This section oftheAct provides a process for each Governorto recommend attainment, nonattainment, or unclassifiable designations, with appropriate boundaries, to the EPA and requires thatthese recommendations be submittedto EPA within one year ofa promulgation ofa new orrevised NAAQS. Therefore, we ask that statesprovide designation recommendations for all areas by October 15,2009.
Under section 107(d)(1) ofthe Act, EPA may make modifications to the recommended designations and boundaries as it deems necessary. EPA will notifythe states no later than 120 days prior topromulgating the designations ofourresponse to state'srecommendations. Thiswill provide an opportunity for the state to commenton any modification that EPA proposes to theirrecommendation.
We are including an enclosure to this letter, whichprovides guidance to state, local air pollution control agencies, and tribes onthe timeline and process for designating areas underthe revised lead standard. Weplan to announce our intended designations as early as possible, but no laterthan 120 days prior to promulgating initial designations. Under section 107(d)(l)(B) ofthe Act, EPA is requiredto issue final designations within

### 8f~1Z. two years offinalizing a NAAQS; however, EPA has the discretion to extendthe deadline up to

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# "(**1~f.;t1**one year ifthere is insufficient information to rnake designations. EPA intends to complete initial designations no later than October 15, 2010, where data is sufficient from the existing monitoring network orwhere no additional data is expected to be available for a state. Remaining areas, using information from the expanded lead monitoring network, will be designated no later than October 15, 2011. States and tribes will have an opportunity to update their recommendations for these remaining areas by October 15,2010. Establishing area designations is a key step in the process ofproviding the health protection intended by the Act. Areas that are designated as not attaining the lead NAAQS will be required to adopt plans to reduce ambient concentrations oflead. We will keep your state informed ofany additional guidance and other supportactivities.
We look forward to working with you and your staffto develop area designations under the 2008 revised lead standard in a timely manner. Ifyou have any questions, please do not hesitate to contact me. Your air quality staffmay wish to contact Callie Videtich, Director, Air Program at (303) 312-6434. Sincerely,

# ~S'~IY.~/~~

CaroI Rushin

# C~J'~S) Acting Regional Administrator
Enclosure

cc: L. Dave Glatt, Chief, Environmental Health Section, Department ofHealth Terry O'Clair, Director, Division ofAir QualityUNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 8 1595WYNKOOP STREET DENVER. CO 80202-1129 Phone 800-227-8917 http://www.epa.gov/region08
Ref: 8P-AR 

## SEP 1 1 2009 The Honorable Brian Schweitzer Governor ofMontana 225 North Roberts Helena, MT 59620-0801
Dear Governor Schweitzer: 

### Jam writing to provide you with guidance onthe process for designating areas under the 2008 revised National Ambient Air Quality Standard (NAAQS) for lead. In orderto ensurethat public health and welfare are protected, the U.S. Environmental Protection Agency (EPA) revised the iead NAAQS onOctober 15,2008 (73 FR 66964; November 12,2008). The new primary lead standard was lowered from 1.5 micrograms per cubic meter (ug/m3) set in 1978, to 0.15 ug/m3. This new standard is based onthe mostrecent scientific studies and provides protection against adverse health effects associated with exposure to lead. To provide increased protection against lead-related welfare effects, EPArevised the secondary standard to be identical 

### iri all respects to the revised primary standard.
The next step in implementing the revised lead NAAQS is for states to recommend to EPA an air quality designation for their state. The process for designations, following promulgation ofa new orrevised NAAQS, is contained in section 1 07(d)(l) ofthe Clean AirAct (Act). This section ofthe Actprovides a process for each Governor to recommend attainment, nonattainment, or unclassifiable designations, with appropriate boundaries, to the EPA and requires that these recommendations be submitted to EPA within one year ofa promulgation ofa neworrevised NAAQS. Therefore, we ask that states provide designationrecommendations for all areas by October 15,2009.
Under section 107(d)(1) ofthe Act, EPAmay makemodifications to the recommended designations and boundaries as it deems necessary. EPA will notify the states no later than 120 days priorto promUlgating the designations ofour response to state'srecommendations. This will provide an opportunity for the state to comment on any modificationthat EPAproposes to theirrecommendation.
We are including an enclosure to this letter, whichprovides guidance to state, local air pollutioncontrol agencies, and tribes onthe timeline and process for designating areas underthe revised lead standard. We plan to announce our intended designations as early as possible, but no later than 120days prior to promulgating initial designations. Under section 1 07(d)(1)(B) ofthe Act, EPA is required to issue final designations within two years offinalizing a NAAQS; however, EPA has the discretion to extend the deadline uptoone year ifthere is insufficient information to make designations. EPA intends to complete initial designations no later than October 15, 20lO, where data is sufficient from the existing monitoring network or where no additional data is expectedto be available for a state. Remaining areas, using information from the expanded lead monitoring network, will be designated no later than October 15, 2011. States and tribes will have an opportunity to update their recommendations for these remaining areas by October 15,2010. Establishing area designations is a key step in the process ofproviding the health protection intended by the Act. Areas that are designated as not attaining the leadNAAQS will be required to adopt plans to reduce ambient concentrations oflead. We will keep your state informed ofany additional guidance and other support activities.
We look forward to working with you and your staffto develop area designations under the 2008 revised lead standard in a timely manner. Ifyou have any questions, please do not hesitate to contact me. Your air quality staffmay wish to contact Callie Videtich, Director, Air Program at (303) 312-6434.

### ~ 01 Rushin cting Regional Administrator
Enclosure

cc: Richard Opper, Director, Department ofEnvironmental Quality Judy Hanson, Administrator, Permitting and Compliance Division Dave Klemp, Chief, Air Resources Management BureauUNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 8 1595WYNKOOP STREET DENVER, CO 80202-1129 Phone 800-227-8917 http://www.epa.gov/region08
Ref: 8P-AR 

## SEP 1 1 2009 The Honorable Bill Ritter GovernorofColorado 200 East Colfax Denver, CO 80203-1792
Dear Governor Ritter:
I am writing to provide you with guidance onthe process for designating areas under the 2008 revised National Ambient Air Quality Standard (NAAQS) for lead. 

### In orderto ensure that public health and welfare are protected, the U.S. Environmental Protection Agency (EPA) revised the lead NAAQS on October 15,2008 (73 FR 66964; November 12,2008). The new primary lead standard was lowered from 1.5 microgramsper cubic meter (uglm3) set in 1978, to 0.15 uglm3. This new standard isbased on the most recent scientific studies and provides protection against adverse health effects associated with exposure to lead. Toprovideincreased protection against lead-related welfare effects, EPArevised the secondary standard to be identical in all respects to the revised primary standard.

. The next step in implementing the revised lead NAAQS is for states to recommend to EPA an air quality designationfor theirstate. The process for designations, following promulgation ofa new orrevisedNAAQS, is contained in section 1 07(d)(1) ofthe CleanAir Act (Act). This section ofthe Act provides a process for each Governor to recommend attainment, nonattainment, or unclassifiable designations, with appropriate boundaries, to the EPA and requires that these.recommendations be submitted to EPA within one year ofa promulgation ofa new orrevised NAAQS. Therefore, we ask that states provide designation recommendations for all areas by October 15,2009.
Under section 107(d)(I)ofthe Act, EPA may make modifications to the recommended designations and boundaries as it deems necessary. EPA will notify the states no later than 120 days priorto promulgatingthe designations ofourresponse to state'srecommendations. This will provide an opportunityfor the stateto comment onany modificationthat EPA proposes to their recommendation.
We are including an enclosure to this letter, which provides guidance to state, local air pollution control agencies, and tribes on the timeline and process for designating areas under the revised lead standard. We plan to announce ourintended designations as early as possib,le, but no later than 120 days priorto promulgating initial designations. Under section 107(d)(l)(B) ofthe Act, EPA isrequired to issue final designations within two years offinalizing a NAAQS; however, EPA has the discretion to extendthe deadline up toone year ifthere is insufficient information to make designations. EPA intends to complete initial designations no later than October 15,2010, where data is sufficient from the existing monitoring network or where no additional data is expected to be available for a state. Remaining areas, using information from the expanded lead monitoring network, will be designated no laterthan October 15,2011. States and tribes will have an opportunity to update their recommendations for theseremaining areas by October 15, 2010. Establishing area designations is a key step inthe process ofproviding the health protection intended by the Act. Areas that are designated as not attaining the lead NAAQS will be required to adopt plans to reduce ambient concentrations oflead. We will keep your state informed ofany additional guidance and other support activities.
We look forward to working with you and your staffto develop area designations under the 2008 revised lead standard in a timely manner. 

### Ifyou have any questions, please do not hesitate to contact me. Your airquality staffmay wish to contact Callie Videtich, Director, Air Program at (303) 312-6434.


# fr' 01 Rushin Acting Regional Administrator
Enclosure

cc: James 

### B. Martin, Executive Director, CDPHE Martha Rudolph, Director, Environmental Programs Paul Tourangeau, Director, Air Pollution Control DivisionUNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 8 1595WYNKOOP STREET DENVER, CO 80202-1129 Phone 800-227-8917 http://www.epa.gov/region08

Ref: 8P-AR 

## SEP 1 1 2009 The Honorable Dave Freudenthal GovernorofWyoming

. 200 W. 34th Street

. Cheyenne, WY 82002-0010
Dear Governor Freudenthal:
I am writing to provide youwith guidance onthe process for designating areas underthe 2008 revised National Ambient Air Quality Standard (NAAQS) for lead. In orderto ensure that public health and welfare are protected, the U.S. Environmental ProtectionAgency (EPA) revised the lead NAAQS on October 15, 2008 (73 FR 66964; November 12, 2008). The new primary lead standard was lowered from 1.5 micrograms percubic meter (uglm3) set in 1978, to 0.15 uglm3. This new standard is basedonthe mostrecent scientific studies and provides protection against adverse health effects associated with exposureto lead. To provide increased protection against lead-related welfare effects, EPArevised the secondary standard to be identical in all respects to the revised primary standard.
The next step in implementingtherevised lead NAAQS is for statesto recommend to EPAan airquality designation for their state. Theprocess for designations, following promulgationofa neworrevised NAAQS, is contained in section 1 07(d)(1) ofthe Clean AirAct (Act). This section ofthe Act provides a process for each Governorto recommend attainment, nonattainment, orunclassifiable designations, with appropriate boundaries, tothe EPA and requires that these recommendations be submitted to EPA within one yearofa promulgationofa neworrevised NAAQS. Therefore, we ask that states provide designation recommendations for all areas by October 15, 2009.
Under section 1 07(d)(1) ofthe Act, EPA maymake modifications tothe recommended designations and boundaries as it deems necessary. EPAwill notify the states no laterthan 120 days priorto promulgatingthe designations ofourresponse to state'srecommendations. This will provide an opportunity forthe stateto commenton any modification that EPA proposes to theirrecommendation.
We are including an enclosureto this letter, which provides guidance to state, local air pollution control agencies, andtribes onthe timeline and process for designating areas underthe revised lead standard. We planto announce ourintendeddesignations as'early as possible, but no laterthan 120 days priorto promulgatinginitial designations.
Under section 1 07(d)(l)(B) ofthe Act, EPA is required to issue final designations within two years offinalizing a NAAQS; however, EPAhasthe discretion to extendthe deadline uptoone year ifthere is insufficient infonnation to make designations. EPA intends to complete initial designations no laterthan October 15, 2010, where data is sufficient from the existing monitoring network orwhere no additional data is expected to be available for a state. Remaining areas, using infonnation from the expanded lead monitoring network, will be designated no laterthan October 15, 2011. States and tribes will have an opportunity to update theirrecommendations for these remaining areas by October 15,2010. Establishing areadesignations is a key step in the process ofproviding the health protection intended by the Act. Areas that are designated as not attaining the lead NAAQS will be required to adopt plans to reduce ambient concentrations oflead. We will keep your state infonned ofany additional guidance and other support activities.
We look forward to working with you and your staffto develop area designations under the 2008 revised lead standard in a timely manner. Ifyou have any questions, please do not hesitate to contact me. Your airquality staffmay wish to contact Callie Videtich, Director. Air Program at (303) 312-6434.

IRushin Acting Regional Administrator
Enclosure

cc: John Corra, Director, Department ofEnvironmental Quality David A. Finley, Administrator, Air Quality ProgramUNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 8 1595WYNKOOP STREET DENVER. CO 80202-1129 Phone 800-227-8917 http://www.epa.gov/region08
Ref: 8P-AR 

## SEP 1 1 2009 The Honorable Mike Rounds Governor ofSouth Dakota 500 E. Capital Ave. Pierre, SD 57501
Dear Governor Rounds:
I am writing to provide you with guidance on the process for designating areas under the 2008 revised National Ambient Air Quality Standard (NAAQS) for lead. In orderto ensure that public health and welfare are protected, the U.S. Environmental Protection Agency (EPA) revised the lead NAAQS on October IS, 2008 (73 FR 66964; November 12, 2008). The new primary lead standard was lowered from 1.5 micrograms percubic meter (ug/m3) set in 1978, to 0.]5 uglm3. This new standard is based on the most recent scientific studies and provides protection against adverse health effects associated with exposure to lead. To provide increased protection against lead-related welfare effects, EPA revised the secondary standard to be identical in all respects to the revised primary standard.
The next step in implementingthe revised lead NAAQS is for states to recommend to EPA an air quality designation for their state. The process for designations, following promulgation ofa new orrevised NAAQS, is contained in section I07(d)(I) ofthe Clean Air Act (Act). This section ofthe Act provides a process for each Governorto recommend attainment, nonattainment, or unclassifiable designations, with appropriate boundaries, to the EPA and requires that these recommendations be submitted to EPA within one year ofa promulgation ofa new orrevised NAAQS. Therefore, we ask that states provide designation recommendations for all areas by October 15,2009. Under section I07(d)( 1) ofthe Act, EPA may make modifications to the recommended designations and boundaries as it deems necessary. EPA will notify the states no laterthan 120 days prior to promulgating the designations ofourresponse to state's recommendations. This will provide an opportunity for the state to comment on any modification that EPA proposes to their recommendation.
We are including an enclosure to this letter, which provides guidance to state, local air pollution control agencies, and tribes on the timeline and process for designating areas underthe revised lead standard. We plan to announce our intended designations as early as possible, but no later than 120 days priorto promulgating initial designations. Under section 107(d)(l)(B) ofthe Act, EPA is required to issue final designations within· two years offinalizing a NAAQS; however, EPA has the discretion to extend the deadline up to 

# Ione year ifthere is insufficient information to make designations. EPA intends to complete initial designations no later than October 15, 2010, where data is sufficient from the existing monitoring network or where no additional data is expected to be available for a state. Remaining areas, using information from the expanded lead monitoring network, will be designated no later than October 15,2011. States and tribes will have an opportunity to update their recommendations for these remaining areas by October 15,2010. Establishing area designations is a key step in the process ofproviding the health protection intended by the Act. Areas that are designated as not attaining the lead NAAQS will be required to adopt plans to reduce ambient concentrations oflead. We will keep your state informed ofany additional guidance and other support activities.
We look forward to working with you and your s,taffto develop areadesignations under the 2008 revised lead standard in a timely manner. Ifyou have any questions, please do not hesitate to contact me. Your air quality staffmay wish to contact Callie Videtich, Director, Air Program at (303) 312-6434.

Acting Regional Administrator
Enclosure

cc: Steven M. Pimer, Secretary, Department ofEnvironment and Natural Resources Tim Tollefsrud, Director, Division ofEnvironmental Services Brian Gustafson, Administrator, Air Quality Program



# I I

J 

# tUNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 8 1595WYNKOOP STREET DENVER, CO 80202-1129 Phone 800-227-8917 http://www.epa.gov/regionOS Concurrence Copy Ref: 8P-AR 

## SEP 1 1 2009 The Honorable Gary R. Herbert Governor ofUtah 300North State Street Salt Lake City, UT 84114-2220
Dear Governor Herbert:
I am writing to provideyou with guidance on the process for designating areas under the 2008 revised National Ambient Air Quality Standard (NAAQS) for lead. In orderto ensure that public health and welfare are protected, the U.S. Environmental Protection Agency (EPA) revised the lead NAAQS on October 15, 2008 (73 FR66964; November 12, 2008). The new primary lead standard was lowered from 1.5 micrograms per cubic meter (ug/m3) set in 1978, to 0.15 ug/m3. This new standard is based onthe mostrecent scientific studies and provides protection against adverse health effects associated with exposure to lead. To provide increased protection against lead-related welfare effects, EPA revised the secondary standard to be identical in all respects to therevised primary standard.
The next stepin implementingtherevised leadNAAQS is for statesto recommend to EPA an air quality designation for their state. Theprocess for designations, following promulgation ofa new orrevised NAAQS, is contained in section 107(d)(I)ofthe CleanAir Act (Act). This section ofthe Act provides a process for each Governorto recommend attainment, nonattainment, orunclassifiable designations, with appropriate boundaries, to the EPA and requires that these recommendations be submitted to EPA within one year ofa promulgation ofa neworrevised NAAQS. Therefore, we ask that states provide designation recommendations for all areas by October 15,2009.
Under section 107(d)(I) ofthe Act, EPA may make modifications to the recommended designations and boundaries as it deems necessary. EPA will notify the states no laterthan 120 days prior to promulgating the designations ofourresponse to state'srecommendations. This will provide anopportunity for the state to commenton any modification that EPA proposes to their recommendation.
We are including an enclosureto this letter, whichprovides guidance to state, local air pollution control agencies, andtribes onthe timeline and process for designating areas under the revised lead standard. We planto announce our intended designations as early as possible, but no laterthan 120 days priorto promulgating initial designations.
Under section 107(d)(l)(B)ofthe Act, EPA is required to issue final designations within two years offinalizing a NAAQS; however, EPA has the discretion to extend the deadline up toone year ifthere is insufficient information to make designations. EPA intends to complete initial designations no later than October 15,2010, where data is sufficient from the existing monitoring network or where no additional data is expected to be available for a state. Remaining areas, using information from the expanded lead monitoring network, will be designated no later than October 15,2011. States and tribes will have an opportunity to update their recommendations for these remaining areas by October 15,2010. Establishing area designations is a key step in the process ofproviding the health protection intended by the Act. Areas that are designated as not attaining the lead NAAQS will be required to adopt plans to reduce ambient concentrations oflead. We will keep your state informed ofany additional guidance and other support activities

.

. We look forward to working with you and your staffto develop area designations under the 2008 revised lead standard in a timely manner. Ifyou have any questions, please do not hesitate to contact me. Your air quality staffmay wish to contact Callie Videtich, Director, Air Program at (303) 312-6434. Sincerely,

Carol Rushin Acting Regional Administrator
Enclosure

cc: Cheryl Heying, Director, Division ofAir Quality William Sinclair, Acting Executive Director, Department ofEnvironmental Quality