UNITED STATES ENVIRONMENTAL PROTECTION AGENCY 

REGION IX 

75 Hawthorne Street 

San Francisco, CA 94105·3901 

OFFICE OF THE 

SfP 0 9 2009 REGIONAL ADMINISTRATOR 

Elizabeth Hansen, Chairperson 

Redwood Valley Rancheria 

3250 Road 1 

Redwood Valley, CA 95470 

Dear Chairperson Hansen: 

I am writing you today to inform you about the process for designating ar~as under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tnbe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15, 2008 (73 FR 66964; 

November 12, 2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (uglm3

) set in 1978, to a level of 0.15 uglm3

• This new standard is based on the most 

recent scientific studies and provides increased 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. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic
 

areas within the United States as attainment, unclassifiable, or nonattainment under section 107
 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through a formal
 

rulemaking process outlined in Section 107(d) of the Act. If an area does not meet the national
 

standard for the revised lead standard, or contributes to a nearby area that does not meet the
 

standard, it will be designated as nonattainment. Under section 107(d)(1)(B) ofthe Act, EPA
 

issues final designations within two years of finalizing a NAAQS; however, EPA has the
 

discretion to extend the deadline up to one year if there is insufficient infonnation to make
 

designations. EPA intends to complete initial designations under the new lead NAAQS by no
 

later than October 15, 2010, for areas where sufficient data are available. Remaining areas,
 

using information from the expanded lead monitoring network, will be designated by no later
 

than October 15, 2011.
 

Under section 107 of the Act, a state may recommend a designation of attainment,
 

nonattainment, or unclassifiable for areas surrounding or adjacent to an area of Indian country
 

based on the available lead monitoring data. While the language of section 107 specifically
 

addresses states, interested tribes may also perform this function (but are not required to do so)
 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose
 

pursuant to section 301 (d) of the Act and EPA's regulations at 40 C.F.R. Part 49. In addition,
 

CAA section 301(d)(4) gives EPA discretionary authority, in cases where it determines that
 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to
 

Printed on R~cycled Paper 
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

information (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

Weare including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant information, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15, 2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15, 2010. 

Establishing area designations is a key step in the process ofproviding the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process ofmaking designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan ofmy staffat 520-498-0118. 

Sincerely, 

Acting 

~~Regional Administrator 

Enclosure 

cc: Steve Nevarez, Environmental Director 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
 

REGION IX
 

75 Hawthorne Street
 

San Francisco, CA 94105·3901
 

OFFICE OF THE 

REGIONAL ADMINISTRATOR 

SEP 09 2009 

Arlan Melendez, Chainnan 

Reno-Sparks Tribal Council 

98 Colony Road 

Reno, NV 89502 

Dear Chainnan Melendez: 

1 am writing you today to infonn you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15, 2008 (73 FR 66964; 

November 12, 2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (ug/m3

) set in 1978, to a level of 0.15 ug/m3

. This new standard is based on the most 

recent scientific studies and provides increased 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. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unc1assifiable, or nonattainment under section 107 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through a fonnal 

rulemaking process outlined in Section 107(d) of the Act. If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)( 1)(B) of the Act, EPA 

issues final designations within two years of finalizing a NAAQS; however, EPA has the 

discretion to extend the deadline up to one year if there is insufficient information to make 

designations. EPA intends to complete initial designations under the new lead NAAQS by no 

later than October 15, 2010, for areas where sufficient data are available. Remaining areas, 

using infonnation from the expanded lead monitoring network, will be designated by no later 

than October 15, 2011. 

Under section 107 of the Act, a state may recommend a designation of attainment, 

nonattainment, or unclassifiable for areas surrounding or adjacent to an area of Indian country 

based on the available lead monitoring data. While the language ofsection 107 specifically 

addresses states, interested tribes may also perfonn this function (but are not required to do so) 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose 

pursuant to section 301 (d) ofthe Act and EPA's regulations at 40 C.F.R. Part 49. In addition, 

CAA section 301 (d)(4) gives EPA discretionary authority, in cases where it detennines that 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to 

Prinred on Recycled Paper 
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

infonnation (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant infonnation, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15,2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15, 2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process of making designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan of my staff at 520-498-0118. 

Sincerely, 

Laura Yos i 

Acting Regional Administrator 

Enclosure 

cc: Russell Brigham, Environmental Director 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY 

REGION IX 

75 Hawthorne Street
 

San Francisco, CA 94105·3901
 

OFFICE OF THE 

REGIONAL ADMINISTRATOR 

SFP 0 9 2009 

Rick Dowd, Chairman 

Resighini Rancheria 

P. O. Box 529 

Klamath, CA 95548 

Dear Chairman Dowd: 

I am writing you today to inform you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15, 2008 (73 FR 66964; 

November 12,2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (ug/m3

) set in 1978, to a level of 0.15 ug/m3

. This new standard is based on the most 

recent scientific studies and provides increased 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. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unc1assifiable, or nonattainment under section 107 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through a formal 

rulemaking process outlined in Section 107(d) of the Act. If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)(l)(B) of the Act, EPA 

issues final designations within two years of finalizing a NAAQS; however, EPA has the 

discretion to extend the deadline up to one year if there is insufficient information to make 

designations. EPA intends to complete initial designations under the new lead NAAQS by no 

later than October 15, 2010, for areas where sufficient data are available. Remaining areas, 

using information from the expanded lead monitoring network, will be designated by no later 

than October 15, 2011. 

Under section 107 of the Act, a state may recommend a designation of attainment,
 

nonattainment, or unc1assifiable for areas surrounding or adjacent to an area of Indian country
 

based on the available lead monitoring data. While the language of section 107 specifically
 

addresses states, interested tribes may also perform this function (but are not required to do so)
 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose
 

pursuant to section 301(d) of the Act and EPA's regulations at 40 C.F.R. Part 49. In addition,
 

CAA section 30 I(d)(4) gives EPA discretionary authority, in cases where it determines that
 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to
 

Printed on Rt'cyded Paper 
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

infonnation (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes shouJd submit relevant infonnation, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15, 2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15, 2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process ofmaking designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan ofmy staff at 520-498-0118. 

Sincerely, 

Laura Yos i 

Acting Regional Administrator 

Enclosure 

cc: Rob Cozens, REPA Environmental Director 

-.­
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY 

REGION IX 

75 Hawthorne Street 

San Francisco, CA 94105·3901 

OFFICE OF THE 

REGIONAL ADMINISTRATOR SFP () 9 1.009 

Bo Mazzetti, Vice Chairman 

Rincon Band Tribal Council 

P. O. Box 68 

Valley Center, CA 92082 

Dear Vice Chairman Mazzetti: 

I am writing you today to inform you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15, 2008 (73 FR 66964; 

November 12,2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (uglm3

) set in 1978, to a level of 0.15 uglm3

. This new standard is based on the most 

recent scientific studies and provides increased 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. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unclassifiable, or nonattainment under section 107 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through a formal 

rulemaking process outlined in Section 107(d) of the Act. If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)(l)(B) of the Act, EPA 

issues final designations within two years of finalizing a NAAQS; however, EPA has the 

discretion to extend the deadline up to one year if there is insufficient information to make 

designations. EPA intends to complete initial designations under the new lead NAAQS by no 

later than October 15, 2010, for areas where sufficient data are available. Remaining areas, 

using information from the expanded lead monitoring network, will be designated by no later 

than October 15,2011. 

Under section 107 of the Act, a state may recommend a designation of attainment,
 

nonattainment, or unclassifiable for areas surrounding or adjacent to an area ofIndian country
 

based on the available lead monitoring data. While the language of section 107 specifically
 

addresses states, interested tribes may also perform this function (but are not required to do so)
 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose
 

pursuant to section 301(d) of the Act and EPA's regulations at 40 C.F.R. Part 49. In addition,
 

CAA section 30 1(d)(4) gives EPA discretionary authority, in cases where it determines that
 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to
 

Print~d on R~cyc/~d Pap~r
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

information (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant information, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15, 2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15, 2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process ofmaking designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan ofmy staff at 520-498-0118. 

Sincerely, 

Lf.::::::j# 

Acting Regional Administrator 

Enclosure 

cc: Kristie Orosco, Environmental Director 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
 

REGION IX
 

75 Hawthorne Street
 

San Francisco, CA 94105·3901
 

OFFICE OF THE SEP 09 ~9 REGIONAL ADMINISTRATOR 

Tracy Avila, Chairwoman 

Robinson Rancheria 

P.O. Box 428 

Nice, CA 95464 

Dear Chairwoman Avila: 

I am writing you today to inform you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15, 2008 (73 FR 66964; 

November 12,2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (uglm3

) set in 1978, to a level of 0.15 uglm3

• This new standard is based on the most 

recent scientific studies and provides increased 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. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unclassifiable, or nonattainment under section 107 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through a formal 

rulemaking process outlined in Section 107(d) of the Act. If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)(l )(B) of the Act, EPA 

issues final designations within two years of finalizing a NAAQS; however, EPA has the 

discretion to extend the deadline up to one year if there is insufficient infonnation to make 

designations. EPA intends to complete initial designations under the new lead NAAQS by no 

later than October 15, 2010, for areas where sufficient data are available. Remaining areas, 

using information from the expanded lead monitoring network, will be designated by no later 

than October 15,2011. 

Under section 107 of the Act, a state may recommend a designation of attainment, 

nonattainment, or unclassifiable for areas surrounding or adjacent to an area of Indian country 

based on the available lead monitoring data. While the language of section 107 specifically 

addresses states, interested tribes may also perfonn this function (but are not required to do so) 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose 

pursuant to section 301(d) of the Act and EPA's regulations at 40 C.F.R. Part 49. In addition, 

CAA section 301(d)(4) gives EPA discretionary authority, in cases where it determines that 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to 

Pn'nled on Recycled Paper 
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

information (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant information, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15,2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15,2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process of making designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan ofmy staff at 520-498-0118. 

Sincerely,
 

Laura Yosh'
 

Acting Regional Administrator
 

Enclosure 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
 

REGION IX
 

75 Hawthorne Street
 

San Francisco, CA 94105·3901
 

OFFICE OF THE 

SFp 09 2009 REGIONAL ADMINISTRATOR 

James Moon, Jr., Chainnan 

Rohnerville Rancheria 

32 Bear River Drive 

Loleta, CA 95551 

Dear Chainnan Moon: 

I am writing you today to infonn you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15,2008 (73 FR 66964; 

November 12,2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (uglm3

) set in 1978, to a level of 0.15 uglm3

. This new standard is based on the most 

recent scientific studies and provides increased 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. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unc1assifiable, or nonattainment under section 107 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through. a fonnal 

rulemaking process outlined in Section 107(d) of the Act. If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)(l )(B) ofthe Act, EPA 

issues final designations within two years offinalizing a NAAQS; however, EPA has the 

discretion to extend the deadline up to one year if there is insufficient infonnation to make 

designations. EPA intends to complete initial designations under the new lead NAAQS by no 

later than October 15, 2010, for areas where sufficient data are available. Remaining areas, 

using infonnation from the expanded lead monitoring network, will be designated by no later 

than October 15, 2011. 

Under section 107 of the Act, a.,..state may recommend a designation of attainment, 

nonattainment, or unc1assifiable for areas surrounding or adjacent to an area of Indian country 

based on the available lead monitoring data. While the language of section 107 specifically 

addresses states, interested tribes may also perfonn this function (but are not required to do so) 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose 

pursuant to section 301(d) ofthe Act and EPA's regulations at 40 C.F.R. Part 49. In addition, 

CAA section 301(d)(4) gives EPA discretionary authority, in cases where it detennines that 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to 

Prinud on Rt'cyclt'd Papt'r 
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

information (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are" including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant information, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15,2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15, 2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process of making designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan of my staff at 520-498-0118. 

Sincerely, 

Laura Yoshi 

Acting Regional Administrator 

Enclosure 

cc: Edwin Smith, Environmental Coordinator 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
 

REGION IX
 

75 Hawthorne Street
 

San Francisco, CA 94105·3901
 

OFFICE OF THE 

REGIONAL ADMINISTRATOR 

stP 0 9 ?009 

Carlino Bettega, President 

Round Valley Reservation 

P.O. Box 448 

Covelo, CA 95428 

Dear President Bettega: 

I am writing you today to inform you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15, 2008 (73 FR 66964; 

November 12, 2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (uglm3

) set in 1978, to a level of 0.15 uglm3

. This new standard is based on the most 

recent scientific studies and provides increased 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. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unclassifiable, or nonattainment under section 107 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through a formal 

rulemaking process outlined in Section 107(d) of the Act. If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)(I)(B) of the Act, EPA 

issues final designations within two years of finalizing a NAAQS; however, EPA has- the 

discretion to extend the deadline up to one year if there is insufficient information to make 

designations. EPA intends to complete initial designations under the pew lead NAAQS by no 

later than October 15, 2010, for areas where sufficient data are available. Remaining areas, 

using information from the expanded lead monitoring network, will be designated by no later 

than October 15, 2011. 

Under section 107 of the Act, a state may recommend a designation of attainment, 

nonattainment, or unclassifiable for areas surrounding or adjacent to an area of Indian country 

based on the available lead monitoring data. While the language ofsection 107 specifically 

addresses states, interested tribes may also perform this function (but are not required to do so) 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose 

pursuant to section 301 (d) of the Act and EPA's regulations at 40 C.F.R. Part 49. In addition, 

CAA section 301(d)(4) gives EPA discretionary authority, in cases where it determines that 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to 

Pn'nted on Recycled Paper 
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

information (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

Weare including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant infonnation, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15,2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15,2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process of making designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan of my staff at 520-498-0118. 

Sincerely, 

Laura Yosliii 

Acting Regional Administrator 

Enclosure 

cc: Virginia Bettega, Tribal EPA GAP Manager 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
 

REGION IX
 

75 Hawthorne Street
 

San Francisco, CA 94105·3901
 

OFFICE OF THE 

REGIONAL ADMINISTRATOR 

StP 0 9 2009 

Marshall McKay, Chairperson 

Rumsey Rancheria 

P. O. Box 18 

Brooks, CA 95606 

Dear Chairperson McKay: 

I am writing you today to inform you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15,2008 (73 FR 66964; 

November 12,2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (uglm3

) set in 1978, to a level of 0.15 uglmJ.: This new standard is based on the most 

recent scientific studies and provides increased 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. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unclassifiable, or nonattainment under section 107 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through a formal 

rulemaking process outlined in Section 107(d) of the Act. If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)(l)(B) of the Act, EPA 

issues final designations within two years of finalizing a NAAQS; however, EPA has the 

discretion to extend the deadline up to one year if there is insufficient information to make 

designations. EPA intends to complete initial designations under the new lead NAAQS by no 

later than October 15, 2010, for areas where sufficient data are available. Remaining areas, 

using information from the expanded lead monitoring network, will be designated by no later 

than October 15,2011. ".­

Under section 107 of the Act, a state may recommend a designation of attainment, 

nonattainment, or unclassifiable for areas surrounding or adjacent to an area of Indian country 

based on the available lead monitoring data. While the language of section 107 specifically 

addresses states, interested tribes may also perform this function (but are not required to do so) 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose 

pursuant to section 301 (d) of the Act and EPA's regulations at 40 C.F.R. Part 49. In addition, 

CAA section 301(d)(4) gives EPA discretionary authority, in cases where it determines that 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to 

Prinr~d on R~cyc/~d Papu 
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

infonnation (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant information, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15, 2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15,2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process of making designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan ofmy staff at 520-498-0118. 

Sincerely, 

Laura Yo ii 

Acting Regional Administrator 

Enclosure 

cc: Al Vallecillo, Director of Facilities 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
 

REGION IX
 

75 Hawthorne Street
 

San Francisco, CA 94105·3901
 

OFFICE OF THE 

REGIONAL ADMINISTRATOR StP 09 ?OOg 

Diane Enos, President 

Salt River Indian Community 

10005 E. Osbourne 

Scottsdale, AZ 85256 

Dear President Enos: 

I am writing you today to inform you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15,2008 (73 FR 66964; 

November 12,2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (uglm3

) set in 1978, to a level of 0.15 uglm3

. This new standard is based on the most 

recent scientific studies and provides increased protection against adverse health effects 

associated with exposure to lead. To provide increased protection against lead-related welfare 

effects, EP A revised the secondary standard to be identical in all respects to the revised primary 

standard. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unc1assifiable, or nonattainment under section 107 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through a formal 

rulemaking process outlined in Section 107(d) of the Act. If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)( 1)(8) of the Act, EPA 

issues final designations within two years offinalizing aNAAQS; however, EPA has the 

discretion to extend the deadline up to one year if there is insufficient information to make 

designations. EPA intends to complete initial designations under the new lead NAAQS by no 

later than October 15, 2010, for areas where sufficient data are available. Remaining areas, 

using information from the expanded lead monitoring network, will be designated by no later 

than October 15,2011. 

Under section 107 of the Act, a state may recommend a designation of attainment, 

nonattainment, or unc1assifiable for areas surrounding or adjacent to an area of Indian country 

based on the available lead monitoring data. While the language ofsection 107 specifically 

addresses states, interested tribes may also perform this function (but are not required to do so) 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose 

pursuant to section 30l(d) of the Act and EPA's regulations at 40 C.F.R. Part 49. In addition, 

CAA section 30l(d)(4) gives EPA discretionary authority, in cases where it determines that 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to 

Printed on Recycled Papu 
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

infonnation (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant information, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15,2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15, 2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process of making designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan of my staff at 520-498-0118. 

Sincerely, 

t::::ir 

Acting Regional Administrator 

Enclosure 

cc: andrea Barber, EPNR Manager 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
 

REGION IX
 

75 Hawthorne Street
 

San Francisco, CA 94105·3901
 

OFFICE OF THE 

REGIONAL ADMINISTRATOR 

SfP 0 9 ?009 

Wendsler Nosie, Chairperson 

San Carlos Tribal Council 

P. O. Box 0 

San Carlos, AZ 85550 

Dear Chairperson Nosie: 

I am writing you today to inform you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15, 2008 (73 FR 66964; 

November 12,2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (uglm3

) set in 1978, to a level of 0.15 uglm3• This new standard is based on the most 

recent scientific studies and provides increased 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. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unclassifiable, or nonattainment under section 107 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through a formal 

rulemaking process outlined in Section I07(d) ofthe Act. If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)(l)(B) ofthe Act, EPA 

issues final designations within two years of finalizing a NAAQS; however, EPA has the 

discretion to extend the deadline up to one year if there is insufficient information to make 

designations. EPA intends to complete initial designations under the new lead NAAQS by no 

later than October 15, 2010, for areas where sufficient data are available. Remaining areas, 

using information from the expanded lead monitoring network, will be designated by no later 

than October 15, 2011. 

Under section 107 of the Act, a state may recommend a designation of attainment, 

nonattainment, or unclassifiable for areas surrounding or adjacent to an area of Indian country 

based on the available lead monitoring data. While the language of section 107 specifically 

addresses states, interested tribes may also perform this function (but are not required to do so) 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose 

pursuant to section 301(d) ofthe Act and EPA's regulations at 40 C.F.R. Part 49. In addition, 

CAA section 301(d)(4) gives EPA discretionary authority, in cases where it determines that 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to 

Printed on Recycled Paper 
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

information (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant infonnation, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15,2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15,2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process of making designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan of my staff at 520-498-0118. 

Sincerely, 

Acting 

L~Regional Administrator 

Enclosure 

cc: Loretta Stone, Envirorimental Contact 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
 

REGION IX
 

75 Hawthorne Street
 

San Francisco, CA 94105·3901
 

OFFICE OF THE 

REGIONAL ADMINISTRATOR 

SEP 09 2009 

Evelyn James, President 

San Juan Paiute Tribal Council 

P. O. Box 2710 

Tuba City, AZ 86045 

Dear President James: 

I am writing you today to inform you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15,2008 (73 FR 66964; 

November 12, 2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (ug/m3

) set in 1978, to a level of 0.15 ug/m3. This new standard is based on the most 

recent scientific studies and provides increased 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. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unclassifiable, or nonattainment under section 107 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through a formal 

rulemaking process outlined in Section 107(d) of the Act. If an area does not meet the national ' 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)(1 )(B) of the Act, EPA 

issues final designations within two years of finalizing a NAAQS; however, EPA has the 

discretion to extend the deadline up to one year if there is insufficient information to make 

designations. EPA intends to complete initial designations under the new lead NAAQS by no 

later than October 15, 2010, for areas where sufficient data are available. Remaining areas, 

using information from the expanded lead monitoring network, will be designated by no later 

than October 15, 2011. 

Under section 107 of the Act, a state may recommend a designation of attainment, 

nonattainment, or unclassifiable for areas surrounding or adjacent to an area of Indian country 

based on the available lead monitoring data. While the language of section 107 specifically 

addresses states, interested tribes may also perform this function (but are not required to do so) 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose 

pursuant to section 301(d) of the Act and EPA's regulations at 40 C.F.R. Part 49. In addition, 

CAA section 30 1(d)(4) gives EPA discretionary authority, in cases where it determines that 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to 

Prinud on Recyclt'd Paper 
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

infonnation (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant infonnation, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15,2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15,2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process ofmaking designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan ofmy staff at 520-498-0118. 

Sincerely, 

Laura YOShli 

Acting Regional Administrator 

Enclosure 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
 

REGION IX 

75 Hawthorne Street 

San Francisco, CA 94105·3901 

OFFICE OF THE 

REGIONAL ADMINISTRATOR 

SEP 0 9 2009 

James Ramos, Chainnan 

San Manuel General Council 

26569 Community Center Drive 

Highland, CA 92346 

Dear Chainnan Ramos: 

I am writing you today to infonn you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15, 2008 (73 PR 66964; 

November 12, 2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (uglm3

) set in 1978, to a level of 0.15 uglm3

• This new standard is based on the most 

recent scientific studies and provides increased 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. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unc1assifiable, or nonattainment under section 107 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through a fonnal 

rulemaking process outlined in Section 107(d) of the Act. If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)(l)(B) of the Act, EPA 

issues final designations within two years of finalizing a NAAQS; however, EPA has the 

discretion to extend the deadline up to one year if there is insufficient infonnation to make 

designations. EPA intends to complete initial designations under the new lead NAAQS by no 

later than October 15, 2010, for areas where sufficient data are available. Remaining areas, 

using infonnation from the expanded lead monitoring network, will be designated by no later 

than October 15,2011. 

Under section 107 of the Act, a state may recommend a designation of attainment, 

nonattainment, or unc1assifiable for areas surrounding or adjacent to an area of Indian country 

based on the available lead monitoring data. While the language of section 107 specifically 

addresses states, interested tribes may also perfonn this function (but are not required to do so) 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose 

pursuant to section 301(d) of the Act and EPA's regulations at 40 C.P.R. Part 49. In addition, 

CAA section 301 (d)(4) gives EPA discretionary authority, in cases where it detennines that 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to 

Prinud on R~cyc/~d Papu 
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

infonnation (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant information, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15, 2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15,2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process ofmaking designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan ofmy staff at 520-498-0118. 

Sincerely, 

/::::j~ Acting Regional Administrator 

Enclosure 

cc: Becky Ross, Environmental Manager 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
 

REGION IX
 

75 Hawthome Street
 

San Francisco, CA 94105·3901
 

OFFICE OF THE 

REGIONAL ADMINISTRATOR 

SE'P 09 2009 

Allen Lawson, Chainnan 

San Pasqual Band 

P. O. Box 365 

Valley Center, CA 92082 

Dear Chainnan Lawson: 

I am writing you today to infonn you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15, 2008 (73 FR 66964; 

November 12,2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (uglm3

) set in 1978, to a level of 0.15 uglm3

• This new standard is based on the most 

recent scientific studies and provides increased 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. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unc1assifiable, or nonattainment under section 107 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through a fonnal 

rulemaking process outlined in Section 107(d) of the Act. If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)(l)(B) of the Act, EPA 

issues final designations within two years of finalizing a NAAQS; however, EPA has the 

discretion to extend the deadline up to one year if there is insufficient infonnation to make 

designations. EPA intends to complete initial designations under the new lead NAAQS by no 

later than October 15, 2010, for areas where sufficient data are available. Remaining areas, 

using infonnation from the expanded lead monitoring network, will be designated by no later 

than October 15,2011. 

Under section 107 of the Act, a state may recommend a designation of attainment, 

nonattainment, or unc1assifiable for areas surrounding or adjacent to an area of Indian country 

based on the available lead monitoring data. While the language of section 107 specifically 

addresses states, interested tribes may also perfonn this function (but are not required to do so) 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose .• 

pursuant to section 301(d) of the Act and EPA's regulations at 40 C.F.R. Part 49. In addition, 

CAA section 301(d)(4) gives EPA discretionary authority, in cases where it detennines that 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to 

Prinl~d on R~cycl~d Pap~'
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

information (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant information, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15, 2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15, 2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process ofmaking designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan of my staff at 520-498-0118. 

Sincerely, 

Laura 

H~Yoshli 

Acting Regional Administrator 

Enclosure 

cc: Desiree Morales, Environmental Coordinator 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
 

REGION IX
 

75 Hawthorne Street
 

San Francisco, CA 94105·3901
 

OFFICE OF THE 

REGIONAL ADMINISTRATOR 

SEt> 09 2009 

Mayme Estrada, Tribal Chair 

Santa Rosa Band 

P.O. Box 609 

Hemet, CA 92546 

Dear Tribal Chair Estrada: 

I am writing you today to infonn you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15, 2008 (73 FR 66964; 

November 12,2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (uglm3

) set in 1978, to a level of 0.15 uglm3

• This new standard is based on the most 

recent scientific studies and provides increased 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. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unclassifiable, or nonattainment under section 107 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through a formal 

rulemaking process outlined in Section 107(d) of the Act. If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)(l )(B) of the Act, EPA 

issues final designations within two years of finalizing a NAAQS; however, EPA has the 

discretion to extend the deadline up to one year ifthere is insufficient information to make 

designations. EPA intends to complete initial designations under the new 1e~.Q NAAQS by no 

later than October 15, 20 I0, for areas where sufficient data are available. Remaining areas, 

using information from the expanded lead monitoring network, will be designated by no later 

than October 15, 2011. 

Under section 107 ofthe Act, a state may recommend a designation of attainment, 

nonattainment, or uncIassifiable for areas surrounding or adjacent to an area of Indian country 

based on the available lead monitoring data. While the language ofsection 107 specifically 

addresses states, interested tribes may also perform this function (but are not required to do so) 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose 

pursuant to section 301(d) of the Act and EPA's regulations at 40 C.F.R. Part 49. In addition, 

CAA section 301(d)(4) gives EPA discretionary authority, in cases where it determines that 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to 

Print~d on R~cycl~d Paper 
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

infonnation (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant information, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15, 2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15, 2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process of making designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan ofmy staff at 520-498-0118. 

Sincerely, 

Laura Yoshil 

Acting Regional Administrator 

Enclosure 

cc: Marcie Russell, Environmental Director 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY 

REGION IX 

75 Hawthorne Street 

San Francisco, CA 94105·3901 

OFFICE OF THE 

REGIONAL ADMINISTRATOR 

SEP 0 9 2009 

Clarence Atwell, Chairperson 

Santa Rosa Rancheria 

P. O. Box 8 

Lemoore, CA 93245 

Dear Chairperson Atwell: 

I am writing you today to inform you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15,2008 (73 FR 66964; 

November 12, 2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (uglm3

) set in 1978, to a level of 0.15 uglm3

. This new standard is based on the most 

recent scientific studies and provides increased 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. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unc1assifiable, or nonattainment under section 107 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through a formal 

rulemaking process outlined in Section 107(d) of the Act. If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)(1 )(B) of the Act, EPA 

issues final designations within two years of finalizing a NAAQS; however, EPA has the 

discretion to extend the deadline up to one year if there is insufficient information to make 

designations. EPA intends to complete initial designations under the new lead NAAQS by no 

later than October 15,2010, for areas where sufficient data are available. Remaining areas, 

using information from the expanded lead monitoring network, will be designated by no later 

than October 15, 2011. 

Under section 107 of the Act, a state may recommend a designation of attainment, 

nonattainment, or unclassifiable for areas surrounding or adjacent to an area of Indian country 

based on the available lead monitoring data. While the language of section 107 specifically 

addresses states, interested tribes may also perform this function (but are not required to do so) 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose 

pursuant to section 301(d) of the Act and EPA's regulations at 40 C.F.R. Part 49. In addition, 

CAA section 301 (d)(4) gives EPA discretionary authority, in cases where it determines that 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to 

Print~d on R~cycl~d Pap~r
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

information (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant information, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15, 2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15, 2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process of making designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan ofmy staff at 520-498-0118. 

Sincerely, 

Laura YOShli 

Acting Regional Administrator 

Enclosure 

cc: Allen Bema, Environmental Director 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
 

REGION IX
 

75 Hawthorne Street
 

San Francisco, CA 94105·3901
 

OFFICE OF THE 

REGIONAL ADMINISTRATOR 

SEP 0 9 2009 

Vincent Annenta, Chainnan 

Santa Ynez Reservation 

P. O. Box 517 

Santa Ynez, CA 93460 

Dear Chainnan Annenta: 

I am writing you today to infonn you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15, 2008 (73 FR 66964; 

November 12, 2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (uglm3

) set in 1978, to a level of 0.15 uglm3. This new standard is based on the most 

recent scientific studies and provides increased 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. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unclassifiable, or nonattainment under section 107 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through a fonnal 

rulemaking process outlined in Section I07(d) ofthe Act. If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)(l )(B) ofthe Act, EPA ,'. 

issues final designations within two years of finalizing a NAAQS; however, EPA has the 

discretion to extend the deadline up to one year if there is insufficient infonnation to make 

designations. EPA intends to complete initial designations under the new lead NAAQS by no 

later than October 15, 2010, for areas where sufficient data are available. Remaining areas, 

using infonnation from the expanded lead monitoring network, will be designated by no later 

than October 15,2011. 

Under section l07 of the Act, a state may recommend a designation of attainment, 

nonattainment, or unclassifiable for areas surrounding or adjacent to an area of Indian country 

based on the available lead monitoring data. While the language of section 107 specifically 

addresses states, interested tribes may also perfonn this function (but are not required to do so) 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose 

pursuant to section 301(d) ofthe Act and EPA's regulations at 40 C.F.R. Part 49. In addition, 

CAA section 30 1(d)(4) gives EPA discretionary authority, in cases where it detennines that 

treatment oftribes as identical to states is "inappropriate or administratively infeasible," to 

Printed on Recycled Paper 
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

information (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant information, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15,2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15, 2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process of making designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan ofmy staff at 520-498-0118. 

Sincerely, 

Laura Yosh 1 

Acting Regional Administrator 

Enclosure 

cc: Joshua Simmons, Environmental Manager 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
 

REGION IX
 

75 Hawthorne Street
 

San Francisco, CA 94105·3901
 

OFFICE OF THE 

REGIONAL ADMINISTRATOR 

stP 0 9 2009 

John Hernandez, Chairman 

Santa Ysabel Oflipay Nation 

P. O. Box 130 

Santa Ysabel, CA 92070 

Dear Chairman Hernandez: 

I am writing you today to inform you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15, 2008 (73 PR 66964; 

November 12,2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (ug/m3

) set in 1978, to a level of 0.15 ug/m3• This new standard is based on the most 

recent scientific studies and provides increased 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. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unclassifiable, or nonattainment under section 107 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through a formal 

rulemaking process outlined in Section 107(d) of the Act. . If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)(l)(B) of the Act, EPA 

issues final designations within two years of finalizing a NAAQS; however, EPA has the 

discretion to extend the deadline up to one year ifthere is insufficient information to make 

designations. EPA intends to complete initial designations under the new lead NAAQS by no 

later than October 15, 2010, for areas where sufficient data are available. Remaining areas, 

using information from the expanded lead monitoring network, will be designated by no later 

than October 15,2011. 

Under section 107 of the Act, a state may recommend a designation of attainment, 

nonattainment, or unclassifiable for areas surrounding or adjacent to an area of Indian country 

based on the available lead monitoring data. While the language of section 107 specifically 

addresses states, interested tribes may also perform this function (but are not required to do so) 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose 

pursuant to section 301 (d) ofthe Act and EPA's regulations at 40 C.P.R. Part 49. In addition, 

CAA section 301 (d)(4) gives EPA discretionary authority, in cases where it determines that 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to 

Priflt~d on Rt.'cyc/~d Papu 
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

infonnation (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant infonnation, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15,2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15, 2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process of making designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan of my staff at 520-498-0118. 

Sincerely,
 

Laura Yos .
 

Acting Regional Administrator
 

Enclosure 

cc: Andy Cannella, Tribal Administrator 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
 

REGION IX
 

75 Hawthorne Street
 

San Francisco, CA 94105·3901
 

OFFICE OF THE 

REGIONAL ADMINISTRATOR 

SEP 0 9 ?flO9 

Don Arnold, Chainnan 

Scotts Valley Tribal Council 

301 Industrial Ave, 

Lakeport, CA 95453 

Dear Chainnan Arnold: 

I am writing you today to infonn you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15, 2008 (73 FR 66964; 

November 12, 2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (ug/m3

) set in 1978, to a level of 0.15 ug/m3

. This new standard is based on the most 

recent scientific studies and provides increased 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. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unc1assifiable, or nonattainment under section 107 

ofthe Clean Air Act (Act). Designating an area under the Act is accomplished through a fonnal 

rulemaking process outlined in Section 107(d) of the Act. If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)(1)(8) of the Act, EPA .­

issues final designations within two years of finalizing a NAAQS; however, EPA has the 

discretion to extend the deadline up to one year ifthere is insufficient information to make 

designations. EPA intends to complete initial designations under the new lead NAAQS by no 

later than October 15, 2010, for areas where sufficient data are available. Remaining areas, 

using infonnation from the expanded lead monitoring network, will be designated by no later 

than October 15,2011. 

Under section 107 of the Act, a state may recommend a designation of attainment, 

nonattainment, or unc1assifiable for areas surrounding or adjacent to an area of Indian country 

based on the available lead monitoring data. While the language of section 107 specifically 

addresses states, interested tribes may also perfonn this function (but are not required to do so) 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose 

pursuant to section 301 (d) ofthe Act and EPA's regulations at 40 C.F.R. Part 49. In addition, 

CAA section 301 (d)(4) gives EPA discretionary authority, in cases where it determines that 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to 

Primed 0,. Recyc[td Paptr 
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

information (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant information, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15,2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15, 2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process of making designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan of my staff at 520-498-0118. 

Sincerely, 

Laura YOShll 

Acting Regional Administrator 

Enclosure 

cc: Joel Larson, Tribal EPA Coordinator 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
 

REGION IX 

75 Hawthorne Street 

San Francisco, CA 94105·3901 

OFFICE OF THE 

REGIONAL ADMINISTRATOR 

SEP 0 9 2009 

Michael Fitzgerral, Chainnan 

Sherwood Valley Rancheria 

190 Sherwood Hill Drive 

Willits, CA 95490 

Dear Chainnan Fitzgerral: 

I am writing you today to infonn you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15, 2008 (73 FR 66964; 

November 12,2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (ug/m3

) set in 1978, to a level of 0.15 ug/m3• This new standard is based on the most 

recent scientific studies and provides increased 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. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unc1assifiable, or nonattainment under section 107 

ofthe Clean Air Act (Act). Designating an area under the Act is accomplished through a fonnal 

rulemaking process outlined in Section I07(d) of the Act. If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)(l )(8) ofthe Act, EPA 

issues final designations within two years of finalizing a NAAQS; however, EPA has the 

discretion to extend the deadline up to one year if there is insufficient infonnation to make 

designations. EPA intends to complete initial designations under the new lead NAAQS by no 

later than October 15, 2010, for areas where sufficient data are available. Remaining areas, 

using infonnation from the expanded lead monitoring network, will be designated by no later 

than October 15,2011. 

Under section 107 of the Act, a state may recommend a designation of attainment, 

nonattainment, or unc1assifiable for areas surrounding or adjacent to an area of Indian country 

based on the available lead monitoring data. While the language of section 107 specifically 

addresses states, interested tribes may also perfonn this function (but are not required to do so) 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose 

pursuant to section 301(d) of the Act and EPA's regulations at 40 C.F.R. Part 49. In addition, 

CAA section 301 (d)(4) gives EPA discretionary authority, in cases where it detennines that 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to 

Pn'nl~d on R~cycl~d Pap~r
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

infonnation (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant infonnation, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15, 2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15,2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process of making designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan ofmy staff at 520-498-0118. 

Sincerely, 

Laura Yosliii 

Acting Regional Administrator 

Enclosure 

cc: Misty Cook, Environmental Director 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
 

REGION IX
 

75 Hawthorne Street
 

San Francisco, CA 94105·3901
 

OFFICE OF THE 

REGIONAL ADMINISTRATOR 

SEP 09 ?009 

Nick Fonseca, Chairperson 

Shingle Springs Tribal Council 

P.O. Box 1340 

Shingle Springs, CA 95682 

Dear Chairperson Fonseca: 

I am writing you today to inform you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15, 2008 (73 FR 66964; 

November 12, 2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (uglm3

) set in 1978, to a level of 0.15 uglm3

. This new standard is based on the most 

recent scientific studies and provides increased 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. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unc1assifiable, or nonattainment under section 107 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through a formal 

rulemaking process outlined in Section 107(d) of the Act. If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)(l )(B) of the Act, EPA 

issues final designations within two years of finalizing a NAAQS; however, EPA has the 

discretion to extend the deadline up to one year ifthere is insufficient information to make 

designations. EPA intends to complete initial designations under the new lead NAAQS by no 

later than October 15, 2010, for areas where sufficient data are available. Remaining areas, 

using information from the expanded lead monitoring network, will be designated by no later 

than October 15,2011. 

Under section 107 of the Act, a state may recommend a designation of attainment, 

nonattainment, or unclassifiable for areas surrounding or adjacent to an area of Indian country 

based on the available lead monitoring data. While the language of section 107 specifically 

addresses states, interested tribes may also perform this function (but are not required to do so) 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose 

pursuant to section 30l(d) of the Act and EPA's regulations at 40 C.F.R. Part 49. In addition, 

CAA section 30 1(d)(4) gives EPA discretionary authority, in cases where it determines that 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to 

Print~d on Ruyc/~d Papu 
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

information (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant information, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15, 2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15,2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process ofmaking designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan ofmy staff at 520-498-0118. 

Sincerely, 

Acting 

L~Regional Administrator 

Enclosure 

cc: Rhonda Dickerson, Tribal EPA Director 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
 

REGION IX
 

75 Hawthorne Street
 

San Francisco, CA 94105·3901
 

OFFICE OF THE 

REGIONAL ADMINISTRATOR 

stP 09 2009 

Nancy Egan, Chainnan 

Shoshone-Paiute Tribes 

P. O. Box 219 

Owyhee, NY 89832 

Dear Chainnan Egan: 

I am writing you today to infonn you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15, 2008 (73 FR 66964; 

November 12,2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (uglm3

) set in 1978, to a level of 0.15 uglm3• This new standard is based on the most 

recent scientific studies and provides increased 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. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unc1assifiable, or nonattainment under section 107 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through a fonnal 

rulemaking process outlined in Section 107(d) of the Act. If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)(l)(B) of the Act, EPA 

issues final designations within two years of finalizing a NAAQS; however, EPA has the 

discretion to extend the deadline up to one year if there is insufficient inforrnati<'ln to make 

designations. EPA intends to complete initial designations under the new lead NAAQS by no 

later than October 15, 2010, for areas where sufficient data are available. Remaining areas, 

using infonnation from the expanded lead monitoring network, will be designated by no later 

than October 15,2011. 

Under section 107 of the Act, a state may recommend a designation of attainment, 

nonattainment, or unc1assifiable for areas surrounding or adjacent to an area of Indian country 

based on the available lead monitoring data. While the language of section 107 specifically 

addresses states, interested tribes may also perfonn this function (but are not required to do so) 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose 

pursuant to section 301 (d) ofthe Act and EPA's regulations at 40 C.F.R. Part 49. In addition, 

CAA section 30l(d)(4) gives EPA discretionary authority, in cases where it detennines that 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to 

Printed on Recycled Paper 
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

infonnation (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant infonnation, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15,2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15, 2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process ofmaking designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan of my staff at 520-498-0118. 

Sincerely, 

Laura YOShl 

Acting Regional Administrator 

Enclosure 

cc: Heather Lawrence, Environmental Director 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
 

REGION IX 

75 Hawthorne Street
 

San Francisco, CA 94105·3901
 

OFFICE OF THE 

REGIONAL ADMINISTRATOR 

S~P 0 9 200g 

Kara Miller, Chair 

Smith River Rancheria 

250 N. Indian Road 

Smith River, CA 95567 

Dear Chair Miller: 

I am writing you today to inform you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15, 2008 (73 FR 66964; 

November 12, 2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (ug/m3

) set in 1978, to a level of 0.15 ug/m3

. This new standard is based on the most 

recent scientific studies and provides increased 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. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unc1assifiable, or nonattainment under section 107 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through a formal 

rulemaking process outlined in Section 107(d) of the Act. If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)(l)(B) of the Act, EPA 

issues final designations within two years of finalizing a NAAQS; however, EPA has the 

discretion to extend the deadline up to one year if there is insufficient information to make 

designations. EPA intends to complete initial designations under the new lead NAAQS by no 

later than October 15, 2010, for areas where sufficient data are available. Remaining areas, 

using information from the expanded lead monitoring network, will be designated by no later 

than October 15,2011. 

Under section 107 of the Act, a state may recommend a designation of attainment, 

nonattainment, or unc1assifiable for areas surrounding or adjacent to an area of Indian country 

based on the available lead monitoring data. While the language of section 107 specifically 

addresses states, interested tribes may also perform this function (but are not required to do so) 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose 

pursuant to section 301 (d) of the Act and EPA's regulations at 40 C.F.R. Part 49. In addition, 

CAA section 301(d)(4) gives EPA discretionary authority, in cases where it determines that 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to 

Printl!d on RI!C)'Cll!d Papl!r 
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

information (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant information, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15,2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15,2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process ofmaking designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan ofmy staff at 520-498-0118. 

Sincerely, 

Laura Yoshii 

Acting Regional Administrator 

Enclosure 

cc: Brad Cass, Environmental Director 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY 

REGION IX 

75 Hawthorne Street 

San Francisco, CA 94105·3901 

OFFICE OF THE 

REGIONAL ADMINISTRATOR 

SEP 09 2009 

Robert Salgado, Chainnan 

Soboba Band Of Luiseno Indians 

P. O. Box 487 

San Jacinto, CA 92583 

Dear Chainnan Salgado: 

I am writing you today to infonn you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15, 2008 (73 FR 66964; 

November 12, 2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (uglm3

) set in 1978, to a level of 0.15 uglm3

• This new standard is based on the most 

recent scientific studies and provides increased 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. 

When EP A promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unc1assifiable, or nonattainment under section 107 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through a fonnal 

rulemaking process outlined in Section 107(d) of the Act. If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)(l)(B) ofthe Act, EPA 

issues final designations within two years of finalizing a NAAQS; however, EPA has the 

discretion to extend the deadline up to one year if there is insufficient infonnation to make 

designations. EPA intends to complete initial designations under the new lead NAAQS by no 

later than October 15, 2010, for areas where sufficient data are available. Remaining areas, 

using infonnation from the expanded lead monitoring network, will be designated by no later 

than October 15, 2011. 

Under section 107 of the Act, a state may recommend a designation of attainment, 

nonattainment, or unc1assifiable for areas surrounding or adjacent to an area of Indian country 

based on the available lead monitoring data. While the language of section 107 specifically 

addresses states, interested tribes may also perfonn this function (but are not required to do so) 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose 

pursuant to section 301(d) of the Act and EPA's regulations at 40 C.F.R. Part 49. In addition, 

CAA section 301 (d)(4) gives EPA discretionary authority, in cases where it detennines that 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to 

Printed on Recycled Paper 
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribeswhether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

information (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant information, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15,2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15,2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process ofmaking designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan ofmy staff at 520-498-0118. 

Sincerely, 

Acting 

L~Regional Administrator 

Enclosure 

cc: Erica Helms-Schenk, Environmental Director 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
 

REGION IX
 

75 Hawthorne Street
 

San Francisco, CA 94105·3901
 

OFFICE OF THE 

REGIONAL ADMINISTRATOR 

stP 09 2009 

Cheryl Mose-Temoke, Chairperson 

South Fork Band Council 

21 Lee, B-13 

Spring Creek, NV 89815 

Dear Chairperson Mose-Temoke: 

I am writing you today to inform you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15, 2008 (73 FR 66964; 

November 12, 2008). The new primary lead standard was 10weredJrom the 1.5 micrograms per 

cubic meter (uglm3

) set in 1978, to a level of 0.15 uglm3• This new standard is based on the most 

recent scientific studies and provides increased protection against adverse health effects 

associated with exposure to lead. To provide increased protection against lead-related welfare 

effects, EP A revised the secondary standard to be identical in all respects to the revised primary 

standard. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unclassifiable, or nonattainment under section 107 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through a formal 

rulemaking process outlined in Section 107(d) of the Act. If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)(l)(B) ofthe Act, EPA 

issues final designations within two years of finalizing a NAAQS; however, EPA has the 

discretion to extend the deadline up to one year if there is insufficient information to make 

designations. EPA intends to complete initial designations under the new lead NAAQS by no 

later than October 15, 2010, for areas where sufficient data are available. Remaining areas, 

using information from the expanded lead monitoring network, will be designated by no later 

than October 15,2011. 

Under section 107 ofthe Act, a state may recommend a designation of attainment, 

nonattainment, or unclassifiable for areas surrounding or adjacent to an area of Indian country 

based on the available lead monitoring data. While the language of section 107 specifically 

addresses states, interested tribes may also perform this function (but are not required to do so) 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose 

pursuant to section 301(d) of the Act and EPA's regulations at 40 C.F.R. Part 49. In addition, 

CAA section 301 (d)(4) gives EPA discretionary authority, in cases where it determines that 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to 

Prinud on Rt'cycled Paper 
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

information (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant information, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15,2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15,2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process ofmaking designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan ofmy staff at 520-498-0118. 

Sincerely, 

o Laura Yosh

Acting Regional Administrator 

Enclosure 

cc: Marla Stanton-Woods, Acting Envo Coordinator 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
 

REGION IX
 

75 Hawthorne Street
 

San Francisco, CA 94105·3901
 

OFFICE OF THE 

REGIONAL ADMINISTRATOR 

SE'P 0 9 2009 

Ralph Sepulveda, Chairperson 

Stewarts Point Rancheria 

P. O. Box 6525 

Santa Rosa, CA 95403 

Dear Chairperson Sepulveda: 

I am writing you today to inform you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15, 2008 (73 FR 66964; 

November 12, 2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (uglm3

) set in 1978, to a level of 0.15 uglm3. This new standard is based on the most 

recent scientific studies and provides increased 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 identica.l in all respects to the revised primary 

standard. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unclassifiable, or nonattainment under section 107 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through a formal 

rulemaking process outlined in Section 107(d)-ofthe Act. If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)(l)(B) ofthe Act, EPA 

issues final designations within two years of finalizing a NAAQS; however, EPA has the 

discretion to extend the deadline up to one year if there is insufficient information to make 

designations. EPA intends to complete initial designations under the new lead NAAQS by no 

later than October 15,2010, for areas where sufficient data are available. Remaining areas, 

using information from the expanded lead monitoring network, will be designated by no later 

than October 15, 2011. 

Under section 107 of the Act, a state may recommend a designation of attainment, 

nonattainment, or unclassifiable for areas surrounding or adjacent to an area of Indian country 

based on the available lead monitoring data. While the language of section 107 specifically 

addresses states, interested tribes may also perform this function (but are not required to do so) 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose 

pursuant to section 301(d) of the Act and EPA's regulations at 40 C.F.R. Part 49. In addition, 

CAA section 301(d)(4) gives EPA discretionary authority, in cases where it determines that 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to 

Pn-f1ud on R~cyc/~d Pap~r
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

information (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant information, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15,2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15,2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process of making designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan ofmy staff at 520-498-0118. 

Sincerely, 

Acting 

u~Regional Administrator 

Enclosure 

cc: Nina Hapner, Environmental Director 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
 

REGION IX
 

75 Hawthorne Street
 

San Francisco, CA 94105·3901
 

OFFICE OF THE 

REGIONAL ADMINISTRATOR SEP 0 9 2009 

Warner Barlese, Chairperson 

Summit Lake Tribal Council 

1708 H Street 

Sparks, NV 89431 

Dear Chairperson Barlese: 

I am writing you today to inform you about the process for designating areas under the 

2008 National Ambient Air Quality Standard (NAAQS) for lead, and how your tribe may 

provide input during the lead NAAQS designation process. In order to ensure that public health 

and welfare were protected, EPA revised the lead NAAQS on October 15, 2008 (73 FR 66964; 

November 12, 2008). The new primary lead standard was lowered from the 1.5 micrograms per 

cubic meter (ug/m3

) set in 1978, to a level of 0.15 ug/m3. This new standard is based on the most 

recent scientific studies and provides increased 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. 

When EPA promulgates a new or revised NAAQS, we then designate all geographic 

areas within the United States as attainment, unclassifiable, or nonattainment under section 107 

of the Clean Air Act (Act). Designating an area under the Act is accomplished through a formal 

rulemaking process outlined in Section 107(d) of the Act. If an area does not meet the national 

standard for the revised lead standard, or contributes to a nearby area that does not meet the 

standard, it will be designated as nonattainment. Under section 107(d)(l )(B) of the Act, EPA 

issues final designations within two years of finalizing a NAAQS; however, EPA has the 

discretion to extend the deadline up to one year if there is insufficient information to make 

designations. EPA intends to complete initial designations under the new lead NAAQS by no 

later than October 15, 2010, for areas where sufficient data are available. Remaining areas, 

using information from the expanded lead monitoring network, will be designated by no later 

than October 15,2011. 

Under section 107 of the Act, a state may recommend a designation of attainment, 

nonattainment, or unc1assifiable for areas surrounding or adjacent to an area of Indian country 

based on the available lead monitoring data. While the language of section 107 specifically 

addresses states, interested tribes may also perform this function (but are not required to do so) 

by applying for "treatment-in-a-similar-manner-as-a-state" (TAS) eligibility for this purpose 

pursuant to section 301(d) of the Act and EPA's regulations at 40 C.F.R. Part 49. In addition, 

CAA section 301(d)(4) gives EPA discretionary authority, in cases where it determines that 

treatment of tribes as identical to states is "inappropriate or administratively infeasible," to . 

Primed on R('cycled Paper 
provide for direct administration by regulation to achieve the appropriate purpose. To help 

ensure that EPA obtains relevant data for its designation decisions, EPA invites all tribes ­

whether or not the tribe has obtained TAS eligibility for these purposes - to provide relevant 

infonnation (including designation recommendations) to EPA regarding appropriate designations 

for your areas. 

We are including an enclosure to this letter, which provides guidance to tribes and to state 

and local air pollution control agencies on the timeline and process for designating areas under 

the revised lead standard. Interested tribes should submit relevant infonnation, including any 

recommendations for area designations and boundaries with supporting documentation, to EPA 

by October 15,2009. For areas not expected to be designated by October 2010, states and tribes 

will have the opportunity to update their recommendation letters as they pertain to these 

remaining areas by October 15,2010. 

Establishing area designations is a key step in the process of providing the health 

protection that the Act is intended to provide. If you are interested in learning more about the 

process ofmaking designation recommendations or would like to consult with EPA officials 

about specific aspects of this guidance or the designations process, please contact me at 415-947­

8702 or Colleen McKaughan ofmy staff at 520-498-0118. 

Sincerely, 

Laura Yosh 1 

Acting Regional Administrator 

Enclosure 

cc: Ron Johnny, Environmental Director