STATE OF COLORADO
 

Bill Ritter, Jr., Governor 

Martha E. Rudolph, Executive Director 

Dedicated to protecting and improving the health and environment of the people of Colorado 

4300 Cherry Creek Dr. S. Laboratory Services Division 

Denver, Colorado 80246·1530 8100 Lowry Blvd. 

Phone (303) 692-2000 Denver, Colorado 80230·6928 

TOO Line (303) 691·7700 (303) 692·3090 Colorado Department Located in Glendale, Colorado of Public Health
 

http://www.cdphe.state.co.us and Environment
 

RECEIVED 

March 31, 2010 U.S. EPA Region 8 

RA's Offloo 

Carol Rushin 

Acting Regional Administrator 

US EPA Region VIII 

1595 Wynkoop St. 

Denver, CO 80202 

Dear Ms. Rushin: 

The following actions are submitted to EPA for final approval and incorporation into the Colorado State 

Implementation Plan pursuant to 40 CFR Part 51, Appendix V, 2.1 (a). Two copies of the materials 

needed for your review of each action are included with this letter. 

•	 Colorado Springs Carbon Monoxide Maintenance Plan - The Colorado Air Quality Control 

Commission (Commission) adopted a second ten-year maintenance plan for the Colorado 

Springs area using the Limited Maintenance Plan option. There were no revisions to the control 

measures in the plan. 

•	 Greeley Carbon Monoxide Maintenance Plan - The Commission adopted a second ten-year 

maintenance plan for the Greeley area using the Limited Maintenance Plan option. There were 

no revisions to the control measures in the plan. 

•	 Pagosa Springs PM 10 Maintenance Plan - The Commission adopted a second ten-year 

maintenance plan for the Pagosa Springs area. There were no revisions to the control measures 

in the plan, however, the mobile source emissions budget was reduced. 

•	 Telluride PMI0 Maintenance Plan - The Commission adopted a second ten-year maintenance 

plan for the Telluride area. There were no revisions to the control measures in the plan, 

however, the mobile source emissions budget was reduced. 

•	 Common Provisions - The Commission adopted a revision to the Common Provisions 

Regulation to revise the definitions of "negligibly reactive volatile organic compound" and 

"volatile organic compound" (VOC) in Section 1.G. to be consistent with the federal definitions 

for these terms. 
Carol Rushin
 

March 31, 20 I0
 

Page 2
 

•	 Interstate Air Pollutant Transport State Implementation Plan - the Commission adopted a 

proposal to revise the interstate transport element of the State Implementation Plan to address 

outstanding issues that the US EPA had identified with plan previously adopted by the 

Commission. 

We look forward to your timely review and approval of this request. The office of the Colorado Air 

Quality Control Commission may submit any additional teclmical suppOli documentation or information 

that you may need for review directly to the EPA. Should there be any questions regarding these 

materials, please contact the Commission office at 303-692-3478. Thank you. 

Mmiha E. Rudolph c~

Executive Director 

Colorado Depmiment of Public 

Health and Environment 

cc.	 Paul Tourangeau 

Doug Lempke 

Mark Komp 
Telluride PMIO Maintenance Plan including the 

Ambient Air Quality Standards 

ADMINISTRATIVE MATERIALS 

Copies of the following administrative materials are included in this submittal of revisions to 

Telluride PM I0 Maintenance Plan including the Ambient Air Quality Standards. Hearing 

held on November 19,2009. 

•	 Hearing Notice and Proposed Language as Published in the CCR 40 CFR Part 51 

Appendix V 2.1 (f) 

•	 Meeting Agenda where Public Hearing Occurred and Notice published in the Legal 

Ads of the Denver Post 40 CFR Part 51 Appendix V 2.1 (f) 

•	 Procedural Documents of the Commission (this includes the Agenda Item Control 

Sheet, the Memorandum of Notice, the Economic Impact Analysis) 

•	 Parties Hearing Documents (this includes a list of the parties, the parties prehearing 

statements and rebuttal statements, and any orders by the Commission - - do not 

include all the attachments from the parties) 

•	 Revised Proposed Language and State Implementation Plan Elements 

•	 Technical Support Document 40 CFR Part 51 Appendix V 2.2 

•	 Public Comments 40 CFR Part 51 Appendix V 2.1 (h) 

•	 Adopted Statement of Basis, Specific Statutory Authority and Purpose 

•	 Adopted Language by the Commission (in redline & footer noting adoption date and 

page numbers) 

•	 State Implementation Plan Element Adopted by the Commission 40 CFR Part 51 

Appendix V 2.1 (d) 

•	 Colorado Air Quality Control Commission Meeting Minutes 40 CFR Part 51 

Appendix V 2.1 (g) 

•	 Legal Opinion of the Colorado State Attorney General 40 CFR Part 51 Appendix V 

2.1 (c) and (e) 

•	 Regulation or Regulation Revisions as Published in the Colorado Code of 

Regulations 40 CFR Part 51 Appendix V 2. 1(b) 
Hearing Notice as Published 

on the Commission Website 

40 CFR Part 51 Appendix V 2.1 (f) 
STATE OF COLORADO
 

Bill Ritter. Jr.. Governor
 

James B. Marlin. Executive Director
 

Dedicated to protecting and Improvmg the health and enVironment o/the people o/Colorado 

COLORADO AIR QUALITY CONTROL COMMISSION 

http://www.cdphe.slate.co.us 

EOO-AQCC-A5 

4300 Cherry Creek Drive South 

Denver, Colorado 80246-1530 

Phone (303) 692-3100 Colorado Department Fax (303) 691-7702 of Public Health TOO (303) 691-7700 

and Environment 

NOTICE OF PUBLIC RULEMAKING HEARING 

BEFORE THE 

COLORADO AIR QUALITY CONTROL COMMISSION 

Regarding proposed revisions to:
 

Ambient Air Quality Standards Regulation, the SIP Specific Regulation and
 

the Telluride PMIO Maintenance Plan
 

SUBJECT: 

The Air Quality Control Commission will hold a public rulemaking hearing to consider revisions 

to the PM 10 maintenance plan for Telluride.. This is the second of two lO-year plans that are 

required by the Clean Air Act. The Division is proposing to revise the Ambient Air Quality 

Standards regulation to modify the mobile source emissions budget. 

FEDERAL REQUIREMENTS: 

The federal act requires the adoption of a second 1O-year maintenance plan to demonstrate long 

term compliance with the National standard. A proposed Statement of Basis, Specific Statutory 

Authority, and Purpose and a regulatory analysis (if one has been requested) will be available for 

inspection no later than five (5) days prior to the hearing. The proposed language for the rule 

revision is attached to and made a part of this notice. 

HEARING SCHEDULE: 

DATE: November 19,2009 

TIME: 9:00 AM 

PLACE: Colorado Department of Public Health & Environment 

4300 Cherry Creek Drive South, Sabin Conference Room
 

Denver, Colorado 80246
 

The hearing may be continued at such places and time as the Commission may announce. 

Interested parties may contact the Commission Office at 303-692-3476 to confirm meetmg dates 

and times. 
PUBLIC COMMENT: 

The Commission encourages all interested persons to provide their views either orally at the 

hearing or in writing prior to or at the hearing. The Commission especially solicits comments 

and analyses from persons who will incur directly some cost or benefit from the proposed 

revisions. Public testimony will be taken as close to the start of the hearing as possible and 

during the hearing as necessary. Written and/or electronic submissions prior to the hearing are 

requested to allow review prior to presentation at the hearing. Written and/or electronic 

submissions should be mailed to the Commission Office at least 14 days prior to the hearing. 

PARTY STATUS: 

In order to obtain party status at the hearing, compliance with several requirements as defined in 

the Commissions Procedural Rules is necessary. A petition for party status must be filed by 

electronic mail with the Office of the Air Quality Control Commission no later than close of 

business on September 15,2008. The petition must: 1) identify the applicant,' 2) provide the 

name, address, telephone andfacsimile numbers, and email address ofthe applicants 

representative, and 3) briefly summarize what, ifany, policy, factual, and legal issues the 

applicant has wah the proposal(s) as ofthe time offiling the application. Electronically mailed 

copies must also be received, by this same date, by the Division staff person and the Assistant 

Attorneys General representing the Division and the Commission identified below. Any person 

may petition the Commission to file documents in paper copy format if they are unable for any 

reason to not comply with the requirements of 1.3.8(2) of the Commissions Procedural Rules. 

An original and a specified number of paper copies must be filed in the Office of the Air Quality 

Control Commission, Colorado Department of Public Health and Environment, 4300 Cherry 

Creek Drive South, Denver, Colorado 80246. 

Individuals may also obtain party status through the submittal of an initial alternative rule to the 

proposed rule. The submittal of an alternative proposal must be accompanied by an electronic 

copy of the initial alternative proposed rule and all other associated documents as required by the 

Commission's procedural rules and must be filed by electronic mail with the Office of the 

Commission by the date specified for party status requests. Initial alternative rules must also be 

filed by electronic mail with the Division staff person and with each of the Assistant Attorneys 

General. 

Air Quality Control Commission Air Pollution Control Division 

Theresa L. Martin Chris Dann 

EDO-AQCC-A5 APCD-Bl 

4300 Cherry Creek Drive South 4300 Cherry Creek Drive South 

Denver, CO 80246 Denver, CO 80246 

Theresa.Martin@state.co.us Chris.Dann@state.co.us 

Jerry Goad Thomas Roan 

Attorney for the Commission Attorney for the Division 

Attorney General's Office Attorney General's Office 

1525 Sherman St., 5th Floor 1525 Sherman St., 5th Floor 

Denver, CO 80203 Denver, CO 80203 

Jerry.Goad@state.co.us Tom.Roan@state.co.us 
Requests received beyond the above stated deadline shall only be considered upon a written 

motion for good cause shown. The Commission reserves the right to deny party status to anyone 

that does not comply with the Commission's procedural rules. 

STATUS CONFERENCE: 

A status conference will be held September 18th at 10:00 a.m., at the Department of Public 

Health and Environment to ascertain and discuss the issues involved, and to ensure that parties 

are making all necessary efforts to discuss and resolve such issues prior to the submission of 

prehearing statements. Attendance at this status conference is mandatory for anyone who has 

requested party status. 

PREHEARING CONFERENCEIPREHEARING STATEMENTS: 

Attendance at the prehearing conference is mandatory for all parties to this hearing. A 

prehearing conference will be held October 20,2009 at 2:30 p.m. in the Commission Offices at 

4300 Cherry Creek Drive South, Denver. All parties must submit by electronic mail a 

preliminary prehearing statement to the Commission Office by close of business October 14, 

2009. In addition, electronically mailed copies of these documents must be delivered by that 

date to all persons who have requested party status. A copy of the prehearing statement must 

also be electronically mailed to the Division point of contact and each of the Assistant Attorney's 

General identified above by close of business October 14,2009. Any revisions to the 

prehearing statement must be submitted to the Administrator of the Commission at the 

prehearing conference and by electronic mail to the Commission Office on the day of the 

prehearing conference. Any exhibit included in the prehearing statements will be electronically 

mailed to individual Commissioners for review prior to the hearing, provided the party files 

electronic copies of such exhibit. Rebuttals to the prehearing statement may be submitted to the 

Commission Office and all other parties by close of business October 27,2009. 

EXCEPTIONS TO FILE DOCUMENTS BY ELECTRONIC MAIL: 

The Commission's Procedural Rules provide for an exception to file documents by electronic 

mail. If granted an exception to electronic filing pursuant to the provisions of 1.3.8(3) of the 

Commissions Procedural Rules, the applicant for party status shall file an original and fifteen 

copies of the prehearing statement in the Office of the Air Quality Control Commission, and 

shall also deliver copies to each other party, applicant for party status, the Assistant Attorneys 

General representing the Commission and Division, and the Division staff person for the 

proceedings, by electronic mail or as otherwise provided by the exception granted under 

Subsection 1.3.8(3), by that same day. 
STATUTORY AUTHORITY FOR THE COMMISSION'S ACTIONS: 

The Commission proposes these regulatory changes pursuant to its authority under Sections 25­

7-105(1) and 25-7-109(1) and (2), C.R.S. The rulemaking hearing will be conducted in 

accordance with sections 24-4-103 and 25-7-110, C.R.S., as amended, the Procedural Rules of 

the Commission and as otherwise stated in this notice. This list of statutory authority is not 

intended as an exhaustive list of the Commission's statutory authority to act in this matter. 

Dated this 25th day of August 2009 at Denver, Colorado 

Colorado Air Quality Control Commission 

Douglas A. Lempke, Administrator 
DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT
 

Air Quality Control Commission
 

AMBIENT AIR QUALITY STANDARDS
 

5 CCR 1001-14
 

V.	 Emission Budgets for Attainment/Maintenance Areas in the State of Colorado 

V.A.	 Budgets 

V.A.1	 The following Motor Vehicle Emission Budgets shall be utilized to assess the conformity of 

Transportation Plans, TIPs, and where appropriate, ProJects. for the applicable periods and 

geographic areas Indicated: 

Denver 

Attainment/Maintenance 

Area (Modeling 

Domain) 

PM10: 2015 through 2021 54 tons/day; 2022 

and beyond: 55 tons/day 

Nitrogen OXides: 2015 through 2021 70 

tons/day; 2022 and beyond: 56 tons/day 

Trading provISions: Trading of PM 10 for NOx, or 

NOx for PM1 0 to adjust emiSSion bUdgets for 

purposes of demonstrating transportation 

conformity shall be allowed uSing the emiSSion 

trading formula as follows: 

For trades necessary to Increase a primary 

PM10 bUdget, 15.0 tons/day of NOx will be 

taken from the NOx budget to Increase the 

primary PM10 budget by 1.0 tons/day, a ration 

of 15 to 1 

For trades necessary to Increase a NOx budget, 

1.0 tons/day of primary PM10 will be taken from 

the primary PM10 bUdget to Increase the NOx 

budget by 12.0 tons/day, a ratio of 1 to 12. 

Implementation of trading prOVISions: In the 

event the MPO cannot demonstrate consistency 

with the specific PM10 and NOx mobile source 

emiSSion bUdgets, the trading prOVISions may be 

utilized only after the MPO has considered all 

reasonably available local control measures to 

meet the bUdgets. The MPO must demonstrate 

the need for trading through the usual 

consultation procedures for state Implementation 

plan development delineated In Section IV (F) of 

AQCC Regulation Number 10, Criteria for 

AnalySIS of Conformity 

If trading IS utilized, the MPO shall Include the 

following Information In the transportation 

conformity determination: 
(1 ) The budget for pnmary PM10 and NOx 

for each required year of the conformity 

determination, before trading IS employed; (2) 

The portion of the onglnal budget to be used to 

supplement a wanting budget, for each required 

year for the conformity determination; (3) The 

Increased budget that results from trading, along 

with relevant calculations, and (4) the resulting 

pnmary PM10 and NOx budgets for each 

required year of the conformity demonstration. 

The MPO shall then compare projected 

emiSSions to the adjusted PM10 and NOx motor 

vehicle emiSSion budgets to demonstrate 

conformity 

Denver Attainment Ozone Precursors (attalnmenUmalntenance 

Maintenance Area area boundary) NOx 2002 and beyond 134 tpsd 

VOC 2002 and beyond 119 tpsd (tpsd =tons per 

summer day) Carbon MonOXide 

(attalnmenUmalntenance area boundary) 2013 

through 2020: 1625 tons/day; 2021 and beyond: 

1600 tons/day 

Denver Metro 

Area/North Front Range 

Regional Emissions Budgets 

NOx: 122.9 tons/day 

VOCs: 109.2 tons/day 

Southern Sub-Regional Emissions Budgets 

NOx: 102.4 tons/day 

VOCs: 89.7 tons/day 

Northern Sub-Regional Emissions Budgets 

NOx: 20.5 tons/day 

VOCs: 19.5 tons/day 

8-Hour Ozone 

Nonattalnment Area 

Aspen (Modeling Area) PM10_2015 and Beyond: 16,244Ibs./day 

Canon City EM.1Q.2020 and Beyond: 1,613 Ibs./day 

PM10_2015 and Beyond: 7,534Ibs./day 

PM10_2021 and Beyond: 946lbs./day 

PM102015 and Beyond: 21,773Ibs./day 

PM102Q4.2-2021 and Beyond: 4-Q,O(»t108 

Ibs./day 

Lamar (Modeling Area) 

Pagosa Springs 

(Modeling Area) 

Steamboat Spnngs 

(Modeling Area) 

Tellunde (Modeling 

Area) 
Longmont 

Attainment/Maintenance 

Area 

Carbon Monoxide 2010 through 2014: 43 

tons/day 2015-2019: 43 tons/day 2020 and 

Beyond: 43 tons/day 

Carbon Monoxide 2010 and Beyond: 531 

tons/day 

Carbon Monoxide 2005 through 2009: 99 

tons/day2010 through 2014: 98 tons/day2015 

and Beyond: 94 tons/day 

Carbon Monoxide 2005 through 2009: 63 

tons/day2010 through 2014: 62 tons/day2015 

and Beyond: 60 tons/day 

Colorado Springs 

Attainment/Maintenance 

Area 

Ft. Collins 

Attainment/Maintenance 

Area 

Greeley Area 

Attainment/Maintenance 

Area 

V.A.2.	 Geographic Coverage 

Unless otherwise specified, the geographic coverage of each of the area Motor Vehicle 

Emissions Budgets shall be the nonattalnment or attainment maintenance area as defined In the 

respective state Implementation plans. 

V.A.3.	 The Motor Vehicle EmiSSions Budget for PM1 0 applies to total primary PM10 emissions, Including 

emiSSions from tailpipe exhaust, unpaved roads (except for the Denver PM10 nonattalnment 

area), re-entralned road dust and street sand. It does not Include precursor or secondary 

emiSSions, WhiCh, where appropriate, are covered under separate budgets. 

V.A.4.	 Effective Dates 

V.A.4.a.Denver Carbon Monoxide 

The 1,520 tons per day (2013 and beyond) carbon monoxide emiSSion bUdget 

established In Section V.A.1 shall take effect as a matter of state law when such bUdget 

takes effect as a matter of federal law pursuant to 40 CFR Section 93.118. Until such 

time as the 1,520 tons per day budget takes effect pursuant to this section and 40 CFR 

Section 93.118, the carbon monoxide emiSSion bUdgets for the Denver CO 

attainment/maintenance area shall be 800 tons per day (2002 and beyond). 

V.A.4. b. Colorado Springs Carbon Monoxide 

The 531 tons per day carbon monoxide emiSSion budget established In Section V.A.1 

shall take effect as a matter of state law when such budget takes effect as a matter of 

federal law pursuant to 40 CFR Section 93.118. Until such time as the 531 tons per day 

bUdget takes effect pursuant to this section and 40 CFR Section 93.118, the carbon 

monoxide emiSSion budget for the Colorado Springs CO attainment/maintenance area 

shall be 270 tons per day (2001 and beyond). 

V.A.4.c. Reserved 

V.A.4.d. Reserved 

V.A.4.e.Aspen PM10 
The 16,244 pounds-per-day PM10 emiSSion budget established In Section V.A.1 shall 

take effect as a matter of state law when such budget takes effect as a matter of federal 

law pursuant to 40 CFR Section 93.118. Until such time as the 16,244 pounds-per-day 

budget takes effect pursuant to this section and 40 CFR Section 93.118, the PM 10 

emiSSion budget for the Aspen PM 10 Nonattalnment Area shall be 13,974 pounds-perday 

V.A.4.f. Pagosa Springs PM10 

The 946 pounds-per-day PM10 emiSSion budget established In Section V.A.1 shall take 

effect as a matter of state law when budget takes effect as a matter of federal law 

pursuant to 40 CFR Section 93.118. Until such time as the 946 pounds-per-day budget 

takes effect pursuant to this section and 40 CFR Section 93.118, the PM10 emiSSion 

budget for the Pagosa Springs PM1 0 attalnmenUmalntenance area shall be 7,486 

pounds-per-day 

V.A.4.g.Canon City PM10 

The 1,.-t-613 pounds-per-day PM 10 emiSSion bUdget established In Section V.A.1 shall 

take effect as a matter of state law when such budget takes effect as a matter of federal 

law pursuant to 40 CFR Section 93.118. Until such time as the 1,613 pounds-per-day 

budget takes effect pursuant to this section and 40 CFR s§ection 93.118, the PM 10 

emission budget for the Canon City PM10 attalnmenUmalntenance area shall be 7,439 

pounds-per-day 

V.A.4.h.Lamar PM10 

The 7,534 pounds-per-day PM 10 emiSSion budget established In Section V.A.1 shall 

take effect as a matter of state law when such budget takes effect as a matter of federal 

law pursuant to 40 CFR Section 93.118. Until such time as the 7,534 pounds-per-day 

budget takes effect pursuant to this section and 40 CFR Section 93.118, the PM10 

emiSSion budget for the Lamar PM1 0 Nonattalnment Area shall be 1,884 pounds-perday 

V.A.4.1. Steamboat Springs PM10 

The 21,773 pounds-per-day PM 10 emiSSion budget established In Section V.A.1 shall 

take effect as a matter of state law when such budget takes effect as a matter of federal 

law pursuant to 40 CFR Section 93.118. Until such time as the 21,773 pounds-per-day 

budget takes effect pursuant to thiS section and 40 CFR Section 93.118, the PM10 

emiSSion budget for the Steamboat Springs PM 10 Nonattalnment Area shall be 20,682 

pounds-per-day 

V.A.4.L TellUride PM10 

The 1,108 pounds-per-day PM1 0 emiSSion budget established In Section V.A.1 shall 

take effect as a matter of state law when such budget takes effect as a matter of federal 

law pursuant to 40 CFR Section 93.118. Until such time as the 1,108 pounds-per-day 

budget takes effect pursuant to thiS section and 40 CFR Section 93.118, the PM1 0 

emission budget for the TellUride PM10 Attainment Area shall be 10,001 pounds-per-day 

(2012 and beyond). 

VIII. Statements of Basis, Specific Statutory Authority and Purpose 

VIII.Y Telluride PM10 
Adopted November 19, 2009 

The amendments to the "Ambient Air Quality Standards for the State of Colorado" Regulation adopted by 

the Commission establish mobile source emissions bUdgets for the TellUride PM10 attainment area. 

Federal Requirements 

Nothing In this rule change exceeds the minimum requirements of the federal act. 

Statutory Authority 

The authority to establish emissions bUdgets and to establish criteria for transportation conformity 

determinations IS Included In the general authority to adopt a State Implementation Plan set out In Section 

25-7-105(1), C.R.S. (2001). 

Findings pursuant to Section 25-7-110.8 

The mobile source emiSSions bUdgets are based on EPA's MOBILE6 emISSions model and EPAapproved methods for calculating fugitive dust emiSSions as regUired by federal regulations. All 

methodologies and Information made available by Interested parties have been conSidered. The 

emISSions budgets reduce the potential for air pollution by capping emissions from mobile sources. In 

adopting thIs rule, the Commission chose the most cost-effective alternative. 

Further, these reVISions will Include any typographical, grammatical and formatting errors throughout the 

regUlation. 
Meeting Agenda where Public Hearing Occurred and
 

Notice published in the Legal Ads ofthe Denver Post
 

40 C·FR Part 51 Appendix V 2.1(f)
 
STATE OF COLORADO
 

Bill Ritter, Jr., Governor 

James B. Martin, Executive Director 

COLORADO AIR QUA LITY CONTROL COMMISSION 

http://www.cdphe.st3Ie.co.us 

4300 Cherry Creek Drive South 

OED-OLRA-A5 

Denver, Colorado 80246-1530 

Phone (303) 692-31 00 Colorado Department Fax (303) 691·7702 of Public Health TDD (303) 691-7700 and Environment 

Notice of Meeting and Agenda
 

Air Quality Control Commission
 

November 19,2009 

Colorado Department of Public Health & Environment 

4300 Cherry Creek Drive South, Sabin Room 

Denver, Colorado 

1:00 p.m. 

Call to Order: Determination of a Quorum 

Approval of Minutes: ReviewlApproval of the October 17, 2009 meeting min

Air Quality Control Commission. 

utes of the 

Public Comment: The public is invited to comment on any air pollution is

the agenda. The Commission will not take action 

discussed under this agenda item today; however, item

scheduled for further discussion or action. 

sue 

on 

s m

not on 

issues 

ay be 

Agenda Review: The Commission Administrator will review the meeting 

and discuss any proposed revisions to the agenda for the 

Commission's consideration. 

agenda 

REQUEST FOR PUBLIC HEARINGS DECEMBER 17, 2009 

1.	 Denver Regional Council of Governments (DRCOG) Conformity 

(l0 minutes presentation, 10 minutes discussion) 

The DRCOG will request that the Commission hold a public hearing in December for its 

anticipated Transportation Conformity findings regarding the 2035 Regional Transportation 

Plan and the 2008/2013 TIP. 
RULEMAKING HEARINGS 

2.	 Pagosa Springs PMIO Maintenance Plan Revision 

(10 minutes presentation, 10 minutes discussion) 

The Division will present to the Commission revisions to the PM10 maintenance plan for 

Pagosa Springs. This is the second of two lO-years plans that are required by the Clean Air 

Act. The Ambient Standards and the SIP Specifics regulations will require revisions. 

3.	 Telluride PMIO Maintenance Plan Revision 

(10 minutes presentation, 10 minutes discussion) 

The Division will present to the Commission revisions to the PM 10 maintenance plan for 

Telluride. This is the second of two 10-years plans that are required by the Clean Air Act. 

The Ambient Standards and the SIP Specifics regulations will require revisions. 

BRIEFINGS, DISCUSSIONS AND REpORTS 

4.	 Regulation Number 9: Smoke Management Program 

(20 minutes presentation, 20 minutes discussion) 

The Division will provide the annual update to the Commission on the projected costs for 

the Smoke Management Program. Program costs are not currently projected to cause a 

change to in the annual fees assessed to those covered by the program. 

5.	 Coordinating the Development of Plans for Regional Haze/OzonelRocky Mountain 

National Park 

(10 minutes presentation, 25 minutes discussion) 

The Commission and Division will discuss the requirements for each ofthese programs and 

how individual program proposals will be developed in a coordinated fashion to avoid 

unnecessary regulatory overlap or duplication and provide for the efficient consideration, 

adoption and implementation of each proposal. The Commission and Division will discuss 

the steps necessary to complete the requirements for each program and the relative timing to 

develop the proposals. 

6.	 Commissioner Informational Items 

Commissioners will discuss among themselves activities that they have participated in over 

the past month that they believe other Commissioners and/or members ofthe public may be 

interested in hearing about. 

7.	 Division Director's Report - Paul Tourangeau 

Monthly activities report 

8.	 Attorney General's Report - Jerry Goad 

Update of any recent court actions on air quality issues 

9.	 Administrator's Report - Doug Lempke 

• December meeting agenda items review 

• Review of Action Items from Today's Commission Meeting 

• Status of Pending Action Items 

Adjourn 

2 
6:00 p.m. 

Public Service Company - Cherokee Station
 

Renewal of the Title V Operating Permit
 

The Commission will hold a public comment hearing pursuant to the request of the WildEarth 

Guardians, Clean Energy Action and the Sierra Club and the provisions of §25-7-114.5 Colorado 

Revised Statutes to consider the renewal of the Title V Operating Pennit for the Public Service 

Company's Cherokee Coal-Fired Electric Generating Station located at 6198 Franklin Street in 

Denver, Colorado. §25-7-114.5 Colorado Revised Statutes provides an opportunity for the 

applicant or interested parties to request a public hearing before the Commission to elicit and 

record the comment of any interested person regarding the sufficiency of the preliminary 

analysis and whether the pennit(s) should be approved or denied. The draft operating pennit(s) 

and preliminary analysis can be viewed at the Office of the Adams County Clerk and Recorder at 

450 South 4th Avenue, Brighton, Colorado, 80601, Phone: 303-654-6026 during regular business 

hours or at the offices of the Colorado Department of Public Health and Environment, Air 

Pollution Control Division at 4300 Cherry Creek Drive South, Glendale, Colorado 80246. This 

infonnation is also available on the Department of Public Health and Environment's website at 

http://www.cdphe.state.co.us/ap/airpublicnotices.html 

3
 
The Denver Newspaper Agency
 

DENVER, CO
 

PUBLISHER'S AFFIDAVIT 

City and County of Denver, 

STATE OF COLORADO. 88. 

....... , "ean Birch beln. of lawful
 

a.e and beln. flrwt duly .wom upon oath, depo.e. and .aya: 

That he/.he I. the Legal Advertising Reviewer 

of The Denver New.paper A.ency, publl.her of the Denver Po.t, 

dally new.paper of .enera' circulation pUbll.hed and prlnted In 

whole or In part In Denver, In the County of Denver and State of 

Colorado, and that .ald newspaper wa. prlor to and durln. all 

the time herelnatter mentioned duly qualified for the publication 

of le.al notice. and advertl.ement. wtthln the Meanln. of an Act l'I1CIitii:"'ell'd~ilfilie.ti:olilwtlirih'leili'1i\lis

of the General As.embly of the State of Colorado, approved 

Aprll 7, "2', a. amended and approved March 30, 11231 and a. ~;;.~t~i;..~it;~;*twlil.K~td."the following I' 

. "; .~ ~:'iF.~ '\ ;;;~~1t~~,.; ~,,,,.

amended and approved March 5, "35, entitled "An Act Concemlng . ' 

Legal Notice., Advertl.ement. and Publication. and the fee. of 009 

prlnte" and publl.herw thereof, and to repeal all act. and part. 

of act. In conflict wtth the proYl.lon of thl. Act- and amendment. 

thereto: 

That the notice, of which the annexed I. a true copy, wa. publl.hed 

In the .ald n/7'fap:~to-.:t: (date. of publication) 

..........~.~f.-2, ~.1. .
 

....·..· ·..9··· 7'/ " . 

.................. ~~d. .
 Signature ­

Sub.crlbed and .wom to before me thl•••••• 12 ••••• day 

Of ••• October C' ••• A.D!OO•• • , , ......... J-; ..
 , t Notary Public. 

My comml••lon expire•••••• September 14, 2013 ••••• 

I 
Procedural Documents ofthe Commission 

- Agenda Item Control Sheet 

- Memorandum ofNotice 

- Economic Impact Analysis (initial and final) 
- -

COLORADO AIR QUALITY CONTROL COMMISSION 

AGENDA ITEM CONTROL SHEET 

Item Title Proposed Telluride PM1 0 Attainment/Maintenance Plan revision 

Meeting date November 19. 2009 

TYPES OF ACTION 

NON-HEARING ACTIONS REQUEST FOR HEARING HEARING 

Administrative _Public Rulemaking lL Public Rulemaking -

_ Briefing Informational Informational 

_ Policy 

_ Area Designations 

RECOMMENDED ACTION 

_Adoption .K. Approval Denial -

MOTION 

.K. Required Attached _ Not applicable -

STATUTORY AUTHORITY 

General 25-7-105 Specific 25-7-106, -107, -109 -302 

EPA SUBMITTAL 

Is this issue considered a SIP revision? Yes X No 

Which SIP? Telluride PM10 Date of EPA submission deadline: 06-15-09 

Agenda Item Control Sheet Telluride PM10 11/2/09
ISSUE STATEMENT: 

The Division is requesting that the Commission a proposed revision for the Telluride 

PM10 attainment/maintenance area. Approvals of the associated documents have 

been obtained from the Town of Telluride, the Town of Mountain Village and San 

Miguel County, and are included with this document. 

The documentation shows that the Telluride area will continue to attain the PM10 

National Ambient Air Quality Standard through 2021, and has never violated the PM10 

NAAQS. No additional control measures are required for the Telluride area to comply 

with the standard. 

By accounting for anticipated growth, it is projected that the Telluride area will 

demonstrate maintenance of the PM10 NAAQS through the year 2021 with a 24-hour 

concentration of approximately 127 micrograms per cubic meter (the NAAQS is 150 

ug/m\ 

This revision satisfies the federal requirement for showing attainment/maintenance for 

the second ten-year period after redesignation to attainment/maintenance. No 

additional revisions of the Telluride attainment/maintenance plan are anticipated. If 

future changes in mobile source models or other unforeseen considerations raise 

potential issues with maintaining the PM10 standard, the State will address the need to 

revise the attainment/maintenance plan at that time. 

Please note that this attainment/maintenance plan was to be submitted to EPA by June 

15, 2009 (which is 8 years after EPA's approval of the initial redesignation request and 

maintenance plan, as required by the CAA). Although the Telluride PM10 

Attainment/Maintenance Area Plan update is late, no adverse environmental or 

administrative impact has occurred. 

Agenda Item Control Sheet Telluride PMI0 11/2/09 
ATTACHMENTS: 

1. Proposed Telluride PM10 AttainmenUMaintenance Plan revision 

2. Technical Support Document - Emission Inventory 

3. Final Economic Impact Analysis 

4. Ambient Standards Regulation 

5. Presentation Slides 

6. Town of Telluride Letter of Concurrence 

7. Town of Mountain Village Letter of Concurrence 

8. San Miguel County Letter of Concurrence 

SIGNATURES: 

Date 

Date 

f 7b~(t--ue1rh 104
 

Date 

Agenda Item Control Sheet Telluride PMIO 11/2/09 
MEMORANDUM OF NOTICE 

Date: August 4, 2009 

To: Interested Parties 

Subject: Revisions to the Air Quality Control Commission's "Ambient Air Quality 

Standards" Regulation in Support of Revisions to the Telluride PMIO Maintenance 

Plan 

GENERAL DESCRIPTION
 

The Air Pollution Control Division (Division) proposes this rulemaking package with the intent of
 

revising the Colorado "Ambient Air Quality Standards" regulation, specifically to revise the PMlO
 

emission budget for the Telluride AttainmentlMaintenance Area.
 

Nothing in this rule change exceeds the minimum requirements of the federal act.
 

RULEMAKING PACKAGE
 

Attachments to this memorandum provide details on the proposal as follows:
 

•	 Attachment A: The actual language of the proposed revisions to the "Ambient Air Quality 

Standards" regulation; 

•	 Attachment B: A statement describing the initial economic impact analysis of the proposed 

revisions to the "Ambient Air Quality Standards" regulation; 

•	 Attachment C: The Revised PMl 0 Maintenance Plan for the Telluride AttainmentlMaintenance 

Area 

• Attachment D: Technical Support Document - EmissioIls Inventory 

EXPLANATION OF THE PROPOSED RULES 

Adoption of the revised Telluride Maintenance Plan and the above-mentioned Ambient Air Quality 

Standards regulation revisions would establish a revised PM 10 emission budget for the Telluride area. 

The Division requests approval and adoption of the revised maintenance plan and the proposed 

regulation revisions as part of the State Implementation Plan (SIP). 

MATERIALS TO BE INCORPORATED BY REFERENCE IN THE PROPOSED RULES 

There are no materials to be incorporated by reference in the proposed rule revisions. 

M.O.N. -- 1 
PUBLIC MEETINGS 

You are invited to review these materials and present written or oral comments to the Division in 

accordance with the following: 

Date: (3rd week after publication of proposed rule in the Colorado Register) 

Time: 8:00 a.m. - 5:00 p.m. 

Place: 4300 Cherry Creek Drive South, Denver, CO 80246 

Deadline for Submittal of Written Comments: October I, 2009 

Christopher Dann is lead Division staff for the Telluride area PMl 0 Maintenance Plan revision process. 

Following the close of the public comment period, Mr. Dann will prepare a Division Response to Public 

Comments that summarizes all public comments received, that discusses options for addressing the 

concerns, and makes recommendations from the Division for each issue. The Air Quality Control 

Commission (AQCC) will receive a copy of the Division Response to Public Comment and all written 

comments submitted to the Division. 

The AQCC will hold a public hearing on November 19,2009. Interested parties may request meetings 

with Division staff three (3) weeks prior to the AQCC public hearing regarding this matter. To schedule 

a meeting, please contact Christopher Dann, who will make arrangements for a meeting regarding this 

proposed rulemaking. 

If you wish to be kept advised ofthese proceedings and/or receive a copy of the Division Response to 

Public Comments, you may request that your name be plac'ed on the mailing list for this rulemaking 

proposal by contacting Christopher Dann at the following address: 

Christopher Dann 

Air Pollution Control Division 

4300 Cherry Creek Drive South 

Denver, CO 80246-1530 

Phone: (303) 692-3281 

Fax: (303) 782-5493 

E-mail: christopher.dann@state.co.us 

BACKGROUND ON DEVELOPMENT OF THE PROPOSED RULES 

What are the problems? 

The Air Pollution Control Division is submitting a 2009 revised maintenance plan for the Telluride area 

as required by the U.S. EPA to assure attainment for a second lO-year period beyond the initial 

maintenance period. The initiallO-year maintenance period extended from the June 2001 date when 

EPA approved the initial redesignation request and the associated attainment maintenance plan. The 

second 10-year period extends to 2021. 

M.O.N. -- 2 
There are no known specific time constraints except that these regulatory revisions are directly 

associated with, and are companion to, the IO-year maintenance plan update. 

RANGE OF REGULATORY ALTERNATIVES AND THE NO-ACTION ANALYSIS 

No competing or alternative control measures were rejected when compiling these proposed revisions as 

no new controls are being proposed. 

By taking no action there would not be a second IO-year maintenance plan for the area as required by 

federal law. 

JUSTIFICATION FOR DIFFERING FROM FEDERAL REQUIREMENTS 

The proposed rules meet all requirements applicable to the area as required by federal regulation and the 

Clean Air Act. The proposed rules do not differ from or exceed the federal requirements. 

M.O.N. --4
 
As part ofthe 2009 revised maintenance plan, a new PM10 emissions budget has been established for 

transportation conformity. 

How do the proposed rules help solve the problems? 

The proposed changes to the Ambient Air Standard assign an updated emissions budget for 

transportation conformity using the latest emissions inventory data. This updated emissions budget is 

also reflected in the revised PM 10 Maintenance Plan for Telluride. 

Nothing in these rule changes exceeds the minimum requirements ofthe federal act. 

RULES' EFFECTS ON PUBLIC, REGULATED COMMUNITY, AND OTHER AGENCIES 

The proposed emission budget reflects the latest estimate of emissions. The establishment of a budget 

will impact the planning of federally funded/approved highway plans and projects and could require the 

implementation of mitigation efforts in order to comply with the emissions budget cap. No direct costs 

to the public are anticipated by establishing the emission budget. 

RELATIONSHIP TO FEDERAL AND ADJACENT STATE REQUIREMENTS 

Federal Requirements 

The revision to the emission budget conforms to federal regulation. 

Adjacent State Requirements 

The revisions to the Ambient Air Quality Standards regulation are in conformance with the same federal 

requirements affecting attainment/maintenance areas in the adjacent states. 

IMPLEMENTATION OF THE RULES 

The revised emission budget will be implemented through conformity determinations made under the 

transportation conformity regulations. 

TIME CONSTRAINTS 

The proposed rule changes are to be completed in 2009 in order for the state to submit a Telluride SIP 

revision to EPA in a timely manner to show attainment for the second 10-year term. In accordance with 

CAA 176A(b) it is required that a maintenance plan revision be submitted to the EPA within eight years 

after the original redesignation (which was on June 15,2001) to address maintenance of the standard for 

a second 10-year period beyond redesignation. 

M.O.N. -- 3 
FINAL ECONOMIC IMPACT ANALYSIS 

Per C.R.S. 25-7-110.5 

Revisions to the "Ambient Air Quality Standards" Regulation 

November 19, 2009 

The revisions to the Telluride PM10 maintenance plan revise the PM10 emission 

budget in the Ambient Air Quality Standards regulation. The rule changes should not 

result in an increase in costs to industry, the public or the Air Pollution Control Division. 

The updated emission budget does not impose direct costs on any party, but may affect 

the manner in which transportation funds are allocated and expended. The emission 

budget applies to transportation agencies such as the town of Telluride and the 

Colorado Department of Transportation, but do not impose any direct costs on these 

agencies. Rather than increasing costs, the emission budget may change the mix of 

projects eligible for transportation dollars. 
Parties Hearing Documents
 

(this includes a list of the parties, the parties prehearing statements
 

and rebuttal statements, and any orders by the Commission)
 
RECEIVED 

OCT 14 l009 

BEFORE THE AIR QUALITY CONTROL COMMISSION 

STATE OF COLORADO 

AIROUALm' 

COffOO. CCUtllSSlOfI: 

PREHEARING STATEMENT OF COLORADO DEPARTMENT OF PUBLIC
 

HEALTH AND ENVIRONMENT, AIR POLLUTION CONTROL DIVISION
 

REGARDING AMBIENT AIR QUALITY STANDARDS REGULATION, SIP 

SPECIFIC REGULATION AND THE TELLURIDE AND PAGOSA SPRINGS PM10 

MAINTENANCE PLANS 

The Colorado Department of Public Health and Environment, Air Pollution 

Control Division ("Division") submits the following Prehearing Statement in this matter: 

EXECUTIVE SUMMARY 

The Division is proposing revisions for the Pagosa Springs and Telluride PMl 0 

AttainmentlMaintenance Area Plans. The Division is unaware of any parties to these 

actions. Neither Pagosa Springs nor Telluride has violated the PMl 0 National Ambient 

Air Quality Standard (NAAQS) in the past 10 years. Pagosa Springs recorded one 

exceedance ofthe standard in 2000. Telluride has had no exceedance. No additional 

control measures are required for Pagosa Springs or Telluride to maintain the standard. 

The Division projects that both towns will continue to attain the PM10 NAAQS 

through 2021, with Pagosa Springs at a concentration of approximately 146 micrograms 

per cubic meter, compared with the NAAQS of 150 micrograms per cubic meter, and 

Telluride at 127 micrograms per cubic meter. This revision would satisfy the federal 

requirement for showing attainment for the second ten-year period after redesignation to 

attainment/maintenance. 

The proposed changes to the Ambient Air Standard aSSIgn an updated emISSIOns 

budget for transportation conformity using the latest emissions inventory data. This 

updated emissions budget is also reflected m the revised PMl 0 Mamtenance Plans. 

The DiVIsion has concluded that these actions would result in no increased cost for 

the regulated industry, the public or the DiVISion. This proposal is supported by the 

Towns of Pagosa Spnngs, Tellunde, Mountain Village and San Miguel County. 

STATEMENT OF FACTUAL AND LEGAL ISSUES 

The DiVision is aware of no Issues. 
WITNESSES 

1.	 Curt Taipale, Colorado Department of Public Health and Environment, Air 

Pollution Control Division. Mr. Taipale may testify regarding the Pagosa 

Springs plan. 

2.	 Chris Dann, Colorado Department ofPublic Health and Environment, Air 

Pollution Control Division. Mr. Dann may testify regarding the Telluride 

plan. 

3.	 Other employees of the Colorado Department of Public Health and 

Environment, Air Pollution Control Division may, if necessary due to 

scheduling or availability, replace the witnesses listed above. Ifthe above 

witnesses are unavailable to testify, the Division will notify the Commission 

of any replacement witness as soon as possible. 

EXHIBITS 

The Division has no exhibits at this time. 

DATED this 14th day of October, 2009. 

JOHN W. SUTHERS 

Attorney General 

HO A. ROAN, 30867* 

Assistant Attorney General 

Environmental Quality 

Natural Resources and Environment Section 

Attorneys for AIR POLLUTION CONTROL 

DIVISION 

1525 Shennan Street, 5th Floor 

Denver, Colorado 80203 

Telephone: (303) 866-5280 

*Counse! of Record 
Revised Proposed Language and State Implementation
 

Plan Elements
 
Revised PM10 Attainment/_Maintenance Plan
 

Telluride Attainment/Maintenance Area
 

CONTACT INFORMATION 

Colorado Air Quality Control Commission
 

4300 Cherry Creek Drive South
 

Denver, CO Colorado Department 80246 

ofPublic Health (303) 692-3476 and Environment 

Air Pollution Control Division 

4300 Cherry Creek Drive South 

Denver, CO 80246 

(303) 692-3100 
TABLE OF CONTENTS 

Chapter 1, Introduction, is provided as background 

information only and is not to be construed to be part of the 

federally-enforceable State Implementation Plan. 

Chapter 2, Continued Maintenance ofthe PM10 NAAQS, 

describes the PM10 monitoring network and demonstrates 

with monitored data the continued maintenance of the PM1 0 

NAAQS. 

Chapter 3, Attainment/Maintenance Plan, presents the 

emissions inventories, control measures and other 

requirements to ensure maintenance of the PM10 standard 

through the year 2021. This submittal demonstrates 

maintenance of the PM 10 standard for the 2nd ten-year period 

beyond 2000, the year the Colorado Air Quality Control 

Commission approved the PM10 Redesignation Request and 

Maintenance Plan for the Telluride area (EPA formally 

redesignated Telluride to attainment in 2001). 

Telluride PM1 0 Attainment/Maintenance Plan Revision 11/2/09 

Telluride Maintenance Plan Update 

1 
Chapter 1: Introduction 

The State of Colorado is submitting to the U.S. Environmental Protection Agency (EPA), 

in accordance with CAM Section 176A(b), a revised PM10 Attainment/Maintenance Plan for the 

Telluride Attainment/Maintenance Area -that demonstrates continued attainment/maintenance of 

the 24-hour PM 10 National Ambient Air Quality Standard (NMQS) through 2021. 

The Telluride area was redesignated to attainment status by the EPA (66 FR 32556) on 

June 15, 2001 (effective date, August 14, 2001). Colorado submitted a redesignation request 

and attainment maintenance plan on May 10, 2000. The plan demonstrated 

attainment/maintenance of the PM10 NMQS through 2012 in accordance with CAM Section 

176A(a). This attainment/maintenance plan, which is being submitted for inclusion in the State's 

federally-enforceable State Implementation Plan (SIP), provides for maintenance of the national 

standard for PM10 in the Telluride area through 2021. 

Colorado Air Quality Control Commission 

The Colorado Air Quality Control Commission (AQCC) is a regulatory body with 

responsibility for adopting air quality regulations consistent with State statute. This includes the 

responsibility and authority to adopt State Implementation Plans (SIPs) and their implementing 

regulations. The Commission takes action on SIPs and regulations through a public rule-making 

process. The Commission has nine members who are appointed by the Governor and confirmed 

by the State Senate. 

National Ambient Air Quality Standards for PM1 0 

In 1971, the EPA set National Ambient Air Quality Standards (NMQS) for several air 

pollutants, including total suspended particulates (TSP), defined as particles with an 

aerodynamic diameter of less than 40 microns. In 1987, the EPA changed the particulate matter 

standard to include only those particles with an aerodynamic diameter of less than or equal to 10 

microns (commonly referred to as PM10). The current PM10 NMQS allow for a maximum 24­

hour average of 150 ug/m3 . The 24-hour PM10 NMQS may not be exceeded more than once 

per year on average over three years. 

An annual average of 50 micrograms per cubic meter (ug/m3

) was revoked by the EPA in 

2006 due to a lack of evidence linking long-term exposure to health problems. 

There are both primary and secondary air quality standards. The primary standards are 

set to protect human health, with a margin of safety to protect the more sensitive persons in the 

population, such as the very young, elderly and the ill. Secondary standards are set to protect 

property, materials, aesthetic values and general welfare. For PIVl1 0, the national primary and 

secondary standards are the same. The numerical levels of the standard are subject to change, 

based on new scientific evidence summarized in air quality criteria documents. 

In general, demonstrating attainment requires collecting representative air monitoring 

data and using approved measuring instruments and procedures, with adequate quality 

assurance and quality control. The three most recent years are examined, during which the 

average annual number of exceedances must be less than or equal to one. 

Telluride PM1 0 AttainmenUMaintenance Plan Revision 11/2/09 

Telluride Maintenance Plan Update 

2 
Air quality measurements in the Telluride area satisfy this requirement, as shown in
 

Section 2 "Attainment of the PM10 standard."
 

Telluride Nonattainment Area Classification History 

Because of observed problems with air particles, monitoring of total suspended 

particulates (TSP) began in 1973, and continued through 1987. In 1987, based on relatively high 

TSP levels, the Telluride area was designated by the EPA as a "Group I" nonattainment area of 

concern, Le., an area with a strong likelihood of violating the PM10 NAAQS. In 1990, the 

Telluride area was designated a "moderate" nonattainment area pursuant to section 107(d)(4)(B) 

of the CAAA. 

The first PM 10 SI P Element was adopted by the AQCC in July 1988. The emission 

controls included road paving and coal/woodburning restrictions. EPA Region VIII intended to 

approve the SIP Element, though it eventually was rejected once the CAA was amended in 1990 

and new, more stringent requirements were in place. A new Telluride area SIP Element was 

adopted by the AQCC in January 1993 and supplemented in November 1993. The control 

measures included the paving and woodburning measures from the 1988 SIP Element and new 

road paving contingency measures. EPA partially/conditionally approved the SIP Element on 

September 19, 1994 (59 FR 47807). 

The Telluride area was redesignated to attainment status effective August 14, 2001, after 

the EPA approved the PM10 Redesignation Request and Maintenance Plan. 

Telluride PM10 Attainment/Maintenance Area 

The boundaries for the Telluride/Mt:-Mountain Village/San Miguel County PM10 

attainment/maintenance area are defined by Air Quality Control Commission as follows: 

The area begins at the intersection of Colorado State Highway 145 and the Telluride 

service area boundary, as it existed in 1991. At Remine Creek, the attainment/maintenance 

boundary follows the service area boundary for 9.65 miles to the eastern edge of the area, 

continuing to follow the 9,200 foot contour line. The boundary then intersects Bear Creek. Here 

the attainment/maintenance boundary diverges from the service area boundary (9,200 foot 

contour line). The attainment/maintenance boundary continues in a west, southwest direction for 

0.92 miles from the intersection of the 9,200 foot contour line and Bear Creek to the top of ski lift 

number 9 in the Telluride Ski Area at an elevation of about 11,900 feet. The boundary then shifts 

and runs in a north-westerly direction for 0.83 miles from the top of lift 9 to the top of lift 7, which 

is located at an elevation of 10,490 feet. From the top of lift 7, the boundary continues in a northwesterly direction for 0.5 miles to the intersection of lift 3 with the 10,000 foot contour line. The 

boundary follows the 10,000 foot contour line in a south, south-west direction for 3.2 miles, until it 

intersects Skunk Creek. Here the boundary diverges from the 10,000 foot contour line and 

follows Skunk Creek in a northerly direction for 2.25 miles. At the intersection of Skunk Creek 

and Colorado State Highway 145, the boundary leaves the creek and follows Highway 145 in a 

northerly direction until it meets the service area boundary as it existed prior to changes adopted 

in 1991. 

Telluride PM1 0 AUainmenUMaintenance Plan Revision 11/2/09 

Telll:Jride Maintenance Plan Update 

3 
This area essentially includes the Town of Telluride, the Town of Mountain Village, and 

portions of San Miguel County, which are within the Telluride airshed. A map illustrating the area 

boundary is shown in Figure 1. 

Figure 1. 

Map of the Teliuride/Mt.Mountain Village/San Miguel County 

Attainment/Maintenance Area 

ITelluride PM-10 Attainment Area I L-- -" 

Major Roads 05 2 Miles 

, I - HIGHWAYS I [ I 

DeSignatlon-Boundanes

CITIES

o COUNTIES 

• POint Sources 

- Local Roads 

-

Telluride PM10 Attainment/Maintenance Plan Revision 11/2/09 

Telluride Maintenance Plan Update 

4 
Continued Attainment of the PM10 Standard 

Chapter Two presents the most recent five years (2004-08) of monitored data, and shows 

that Telluride area has maintained attainment of the standard since the redesignation was 

approved. 

Attainment/Maintenance Plan 

Chapter Three contains the core elements EPA has established as necessary for 

approval of maintenance plans: 

1. Description of the control measures for the maintenance period 

2. Emission inventories for current and future years 

3. Maintenance demonstration 

4. Mobile source emissions budget 

5. Approved monitoring network 

6. Verification of continued attainment 

7. Contingency plan 

8. Subsequent maintenance plan revisions 

Telluride PM10 AttainmenUMaintenance Plan Revision 11/2/09 

Telluride Maintenance Plan Update 

5 
CHAPTER 2: CONTINUED MAINTENANCE OF PM10 NAAQS 

Attainment of the 24-hour PM10 NMQS, which is 150 micrograms per cubic meter 

(ug/m3) of PM 10 in ambient air (based on a 24-hour averaging time for the measurement) is 

demonstrated when the average annual number of expected exceedances is less than or equal 

to one. The following information demonstrates, as required by Section 107(d)(3)(E) of the 

Clean Air Act, that the Telluride area continues to attain the national 24-hour standard for PM1 O. 

This demonstration is based on quality assured monitoring data. 

PM10 Monitoring 

PM10 ambient air monitoring in the Telluride area consists of one station at 333 West 

Colorado Avenue. 

This section shall not be construed to establish a monitoring network in the federallyenforceable SIP. EPA has already approved a monitoring SIP for the State of Colorado and this 

description of the PM 10 monitoring network shall not be construed to amend such monitoring 

SIP. 

Monitoring Results and Attainment Demonstration 

The monitoring data presented below verifies that the Telluride area is attaining the 24­

hour PM1 0 NMQS, in accordance with the federal requirements of 40 CFR Part 58. The threeyear average of expected values greater than 150 ug/m3 ppm is less than or equal to one. 

Summary data are shown in the following table. 

Figure 2. Monitored PM10 Values 

24-hol..lr maximum PM 10 values 

micrograms per cubic meter (u~/m3)

(PM10 NAAQS = 150 ug/m ) 

333 W. Colorado Ave. 

I 2001 

I 59 

I 2002 

167 

·1 2003 

197 

12004 

172 

T2005 

170 

. 12006 

169 

12007 

177 

12008 

182 

Quality Assurance Program 

PM10 monitoring data for the Telluride area have been collected and quality-assured in 

accordance with 40 CFR, Part 58, Appendix A, EPA's "Quality Assurance Handbook for Air 

Pollution Measurement Systems, Vol. 11; Ambient Air Specific Methods", the APCD's Standard 

Operating Procedures Manual, and Colorado's Monitoring SIP which EPA approved in 1993. 

The data are recorded in EPA's AIR QUALITY SYSTEM (AQS) and are available for public 

review at the APCD and through EPA's AQS database. 

Telluride PM10 AttainmenUMaintenance Plan Revision 11/2/09 

Telluride Maintenance Plan Update 

6 
CHAPTER 3: ATTAINMENT/MAINTENANCE PLAN 

This attainment/maintenance plan is a SIP revision and provides for maintenance of the 

relevant NMQS in the area for the ten-year period through 2021. 

The EPA has established the core elements listed below as necessary for approval of 

attainment/maintenance plans: 

• Description of the control measures for the maintenance period 

• Emission inventories for current and future years 

• Maintenance demonstration 

• Mobile source emissions budget 

• Approved monitoring network 

• Verification of continued attainment 

• Contingency plan 

• Subsequent maintenance plan revisions 

Attainment/Maintenance Plan Control Measures 

Control Measures Included in the Attainment/Maintenance Plan 

The Telluride area will rely on the control programs listed below to demonstrate 

maintenance of the 24-hour PM1 0 standard through 2021. No emission reduction credit has 

been taken in the attainment/maintenance demonstration for any other current State or local 

control programs and no other such programs, strategies, or regulations shall be incorporated or 

deemed as enforceable measures for the purposes of this maintenance demonstration. 

The attainment/maintenance plan takes credit for the following federally-enforceable 

control measures, which, except where otherwise noted, are included in the SIP: 

Federal fuels and tailpipe standards and regulations 

Credit is taken in this attainment/maintenance plan for current federal regulations 

concerning motor vehicles, fuels, small engines, diesels, and non-road mobile sources. 

While credit is taken for these federal requirements, they are not part of the Colorado 

SIP. 

Woodburning 

Air Quality Control Commission Regulation NO.4 covers wood stoves, 

conventional fireplaces and woodburning on high pollution days, as approved by EPA as 

part of the federal SIP in 1997. This maintenance plan makes no changes to Regulation 

NO.4. 

All of these requirements remain effective, until they are removed or revised by a 

future SIP revision. 

Telluride PM10 Attainment/Maintenance Plan Revision 11/2/09 

Telluride Maintenance Plan Update 

7
 
Stationary Sources 

Emissions from stationary sources of pollution are regulated by several Air Quality 

Control Commission Regulations: 

1)	 Regulation NO.1 regulates emissions of particulates, smoke, sulfur dioxide, and 

nitrogen oxides and establishes limits on these pollutants from covered sources. 

Sections I-IV, Sections VI-IX, and Appendices A and B are already included in the 

approved SIP. This maintenance plan incorporates the regulatory limits in 

calculations of maximum allowable emissions for stationary sources. No 

additional revisions are made to Regulation No. 1 as part of the maintenance plan 

revision. 

2)	 Regulation NO.3 lays out provisions of the State of Colorado's stationary source 

permitting program. Parts A and B of Regulation No.3 are already included in the 

approved SIP. Part C implements the federal operating permit program and this 

reference to Part C of Regulation NO.3 shall not be construed to mean that these 

regulations are included in the SIP. 

3)	 Regulation NO.6 implements the federal standards of performance for new 

stationary sources. This maintenance plan makes no changes to this regulation. 

This reference to Regulation NO.6 shall not be construed to mean that these 

regulations are included in the SIP. 

4)	 The Common Provisions Regulation contains general provisions applicable to all 

emissions sources in Colorado. This maintenance plan makes no changes to this 

regulation. 

The emission inventories for stationary sources supporting the maintenance 

demonstration have followed all relevant EPA rules and guidance documents for 

calculating such emissions. 

As an attainment/maintenance area since August 14, 2001, the State and federal 

attainment PSD permitting requirements remain in effect in the Telluride area. This 

program requires the application of Best Available Control Technology when constructing 

new or modified major stationary sources. 

Telluride PM10 Attainment/Maintenance Plan Revision 11/2/09 

Telluride Maintenance Plan Update 

8 
Emission Inventories 

This section presents emission inventories for the attainment/maintenance plan. 

All of the inventories were developed using EPA-approved emission modeling methods 

and updated transportation and demographics data. The PM~maintenance planPM1 0 

attainment/maintenance plan Technical Support Document contains detailed information on 

model assumptions and parameters for each source category. 

Figure 3. Emission Inventories 

PM10 Emission Inventory (PM 10 Pounds Per Day). 

~rea and 

Mobile Sources Source Category 

2007 2015 2021 

Agriculture 5.39 5.39 5.39 

Commercial Cookino 23.35 30.17 35.29 

Construction 270.66 349.68 408.94 

Fuel Combustion 0.14 0.18 0.22 

Highway Vehicles 6.99 6.69 6.46 

Non-Road 50.54 65.29 76.36 

Paved Road-Dust 367.72 491.61 584.53 

Structure Fires 0.22 0.28 0.33 

Unpaved Road-Dust 324.98 434.47 516.59 

Woodburning 234.71 303.22 354.6'1 

TOTAL 1284.70 1686.99 1988.71 

Telluride PM1 0 Attainment/Maintenance Plan Revision 11/2/09 

Telluride Maintenance Plan Update 

9 
Maintenance Demonstration 

This attainment/maintenance plan provides for maintenance of the NAAQS through the 

year 2021. 

Because there have never been exceedances of the annual standard in the Telluride 

area, an analysis for maintenance of the annual standard was not prepared. Protection of the 24­

hour standard should be sufficient to protect the annual standard since the 24-hour standard has 

always been the standard of concern. 

A design day concentration of 82 ug/m3 has been selected as a conservative value that 

represents the highest 24-hour maximum PM10 value recorded in the Telluride area between 

2006-2008. This 82 ug/m3 concentration occurred on March 28, 2008. No reduction for 

background values has been taken into account for the design day value, making the 82 ug/m3 a 

conservative estimate of PM10 ambient air concentrations in the Telluride area, meaning that the 

design value likely overstates the actual amount of PM1 O. 

The emissions inventory data presented in this report is used to determine the growth in 

PM10 emissions from the 2007 base year to the 2021 maintenance year. The emissions 

inventory shows an increase in PM10 from 1,285 pounds per day in 2007 to 1,989 pounds per 

day in 2021. This represents an increase of 54.79 percent in emissions: 

'1,989/1,285 =1.5479, or 54.79 percent. 

The design day concentration of 82 ug/m3 of PM10 is then increased 54.79 percent to 

"roll forward" to the 2021 attainment year. This roll-forward modeling shows a 2021 

concentration of 126.9 ug/m3 : 

82 ug/m3 x 1.5479 = 126.9 ug/m3 

Since 126.9 ug/m3 is below the 150 ug/m3 standard, maintenance is demonstrated 

through 2021. 

Emissions Budget for PM10 

Federal "transportation conformity" regulations provide for the use of mobile source 

emission budgets in making conformity determinations in the area. The emission budget serves 

as a ceiling on mobile source emissions that federally funded or approved transportation projects 

must comply or "conform" with. 

This maintenance plan establishes an emission budget for the area of 1,989 pounds of 

PM10 per day for 2021 and beyond for the Telluride area. This budget is the total of the 2021 

mobile source PM10 emissions presented in the Figure 3 table above, which includes emissions 

from vehicle exhaust and road dust. This budget has been adopted in the AQCC's "Ambient Air 

Quality Standards for the State of Colorado" regulation. 

Telluride PM10 Attainment/Maintenance Plan Revision 11/2/09 

Telluride Maintenance Plan Update 

10 
Monitoring Network I Verification of Continued Attainment 

The APCD will continue to operate an appropriate air quality monitoring network of NAMS 

and SLAMS monitors in accordance with 40 CFR Part 58 to verify the continued attainment of 

the PM10 NMOS. Annual review of the NAMS/SLAMS air quality surveillance system will be 

conducted in accordance with 40 CFR 58.20(d) to determine whether the system continues to 

meet the monitoring objectives presented in Appendix D of 40 CFR Part 58. 

The State will also track and document measured mobile source parameters (e.g., 

vehicle miles traveled, congestion, fleet mix, etc.) and new and modified stationary source 

permits. If these and the resulting emissions change significantly over time, the APCD will 

perform the appropriate studies to determine 1) whether additional and/or re-sited monitors are 

necessary and 2) whether mobile and stationary source emission projections are on target. 

Telluride PM10 Attainment/Maintenance Plan Revision 11/2/09 

Telluride Maintenance Plan Update 

11 
Contingency Provisions 

Section 175A(d) of the CM requires that the maintenance plan contain contingency 

provisions to assure that the State will promptly correct any violation of the PM 10 NMOS 

standard which occurs after redesignation to attainment. Attainment/maintenance areas are not 

required to have preselected contingency measures, just a list of measures that could be 

considered for future implementation. 

The contingency plan must also ensure that the contingency measures are adopted 

expeditiously once the need is triggered. The primary elements of the contingency plan are: 

1) the list of potential contingency measures; 2) the tracking and triggering mechanisms to 

determine when contingency measures are needed; and 3) a description of the process for 

recommending and implementing the contingency measures. 

The triggering of the contingency plan does not automatically require a revision of the 

SIP, nor is the area necessarily redesignated once again to nonattainment. Instead, the State 

will normally have an appropriate amount of time to correct the violation by implementing one or 

more contingency measures as necessary. In the event that violations continue to occur after 

contingency measures have been implemented, additional contingency measures will be 

implemented until the violations are corrected. 

Potential Contingency Measures 

Section 175A(d) of the CM requires the attainment/mMaintenance j2Plan to 

include as potential contingency measures all of the control measures contained in the 

SIP before redesignation which were relaxed or modified through the 

attainment/mMaintenance j2P-lan. For the Telluride area, there were no control measures 

relaxed or modified. 

The State may evaluate potential strategies in order to address any future 

violations in the most appropriate and cost-effective manner possible. Potential measures 

appropriate for the Telluride area include, but are not limited to: 

o	 Increased street sweeping requirements 

o	 Expanded, mandatory use of alternative de-icers 

o	 More stringent street sand specifications 

o	 Road paving requirements 

o	 Woodburning restrictions 

oRe-establishing new source review permitting requirements for stationary 

sources 

o	 Other emission control measures appropriate for the area based on the 

consideration of cost-effectiveness, PM10 emission reduction potential, 

economic and social considerations, or other factors that the State deems 

appropriate. 

Telluride PM10 Attainment/Maintenance Plan Revision 11/2/09 

Telluride Maintenance Plan Update 

12 
Tracking and Triggering Mechanisms 

Tracking 

The primary tracking plan for the Telluride area consists of continuous 

PM10 monitoring by APCD as described above. APCD will notify EPA,~ the 

AOCC,~ the Colorado Department of Transportation (CDOTt and the 

governments for the Town of Telluride...... government the Town of Mountain Village 

and San Miguel County of any exceedance of the 24-hour NMOS within 45 days 

of occurrence. 

Triggering Contingency Measures 

An exceedance of the 24-hour PM 10 NMOS may trigger a voluntary, local 

process by the Town of Telluride, the Town of Mountain Village, San Miguel County and 

APCD to identify and evaluate potential contingency measures. However, the only 

federally-enforceable trigger for mandatory implementation of contingency measures 

shall be a violation of the NMOS. Specifically, the three-year average of expected 

exceedances at a monitoring site would have to be greater than 1.0 for a violation to 

occur. 

Process for Recommending and Implementing Contingency Measures 

The State will move forward with mandatory implementation of contingency 

measures under the SIP if a violation of the PM 10 NMOS occurs. 

No more than 60 days after being notified by the APCD that a violation of the 24­

hour PM10 NMOS has occurred, the Town of Telluride, the Town of Mountain Village, 

and San Miguel County, in coordination with the APCD, AOCC and COOT will initiate a 

process to begin evaluating potential contingency measures. 

The AOCC will then hold a public hearing to consider the contingency measures 

recommended by the Town of Telluride, the Town of Mountain Village, San Miguel 

County, APCD and COOT along with any other contingency measures the Commission 

believes may be appropriate to effectively address the violation. The necessary 

contingency measures will be adopted and implemented within one year after a violation 

occurs. 

Subsequent Attainment/Maintenance Plan Revisions 

The previously approved attainment/maintenance plan addressed the period through 

2012. The purpose of this attainment/maintenance plan revision is to provide for maintenance of 

the PM10standard for an additional period through 2021. No additional revisions of the PM10 

Attainment/Maintenance Plan are anticipated at this time. If future changes in mobile source 

models or other unforeseen considerations raise potential issues with maintaining the PM1 0 

standard, the State will address the need to revise the attainment/maintenance plan at that time. 

Telluride PM1 0 Attainment/Maintenance Plan Revision 11/2/09 

Telluride Maintenance Plan Update 

13 
Technical Support Document 

40 CFR Part 51 Appendix V 2.2 
PM10 Attainment/Maintenance Plan
 

Telluride 

Technical Support Document 

Emission Inventory 

November 19,2009 

Colorado Department of Public Health and Environment 

Air Pollution Control Division 

4300 Cherry Creek Drive South 

Denver, Colorado 80246 
Colorado Department of Public Health and Environment / Air Pollution Control Division 

Table of Contents 

1. EMISSION INVENTORY METHODOLOGY 1
 

2. 2007 EMISSION INVENTORY SUMMARY 2
 

3. 2015 EMISSION INVENTORY SUMMARy 3
 

4. 2021 EMISSION INVENTORY SUMMARy .4
 

5. REFERENCES 5
 

PMIO Attainment/Maintenance Plan/or Telluride - Techmcal Support Document - EmissIOn Inventory 11119/09 

ii 
Colorado Department of Public Health and Environment / Air Pollution Control Division 

1. Emission Inventory Methodology 

The Air Pollution Control Division (APCD) developed the 2007 and 2021 emission inventories in 

the Revised PM10 AttainmentlMaintenance Plan for the Telluride AttainmentlMaintenance Area 

using u.s. Environmental Protection Agency (EPA) approved emissions modeling methods, 

including EPA's MOBILE6 model and local VMT data for on-road mobile source emissions, 

EPA's non-road model, local demographic infonnation for area and off-road sources, and reported 

actual emissions for point sources. Estimates for future emissions are based on the abovementioned tools and the EPA's Economic Growth and Analysis System (EGAS) model for 

estimating future point sources activity, and VMT growth for on-road mobile sources. 

Highway mobile source emissions are from the EPA model MOBILE6, an emission factor model 

for predicting gram per mile emissions of Hydrocarbons (HC), Carbon Monoxide (CO), Nitrogen 

Oxides (NOx), Carbon Dioxide (C02), Particulate Matter (PM), and, toxics from cars, trucks, and 

motorcycles under various conditions. 

Non-road source emissions are from the EPA Non-Road Model. This model includes the impact of 

future controls on non-road engines, which is used in equipment such as lawn and garden 

equipment and construction equipment. 

Area source emissions (including heating, construction, railroads, etc.) are from the 2002 EPA 

National Emissions Inventory (NEI), grown to 2007 and 2021 by population growth from data 

from the State. For more documentation for these categories, refer to the NEI documentation 

(EPA, 2008). 

Under Air Quality Control Commission Regulation No.3, the APCD requires any source that 

emits two tons per year or greater to submit an Air Pollutant Emission Notice (APEN) (APCD, 

2008). This means that sources that emit less than two tons per year are not necessarily accounted 

for in an emissions inventory. The point source emissions for the Telluride area were obtained 

from this tracking system. The emission estimates are made using a variety of methodologies. 

Data from source-specific emission tests, or continuous emission monitors are preferable, but not 

always available. The EPA has developed a variety of emission factors to estimate emissions as 

well. Emission factors are frequently the best or only method available for estimating emissions. 

There are no point sources in the Telluride AttainmentlMaintenance Area. 

PMIO Attamment/Mamtenance Plan/or TellUride - Techmcal Support Document - EmIssIon Inventory 11/19/09 

1 
Colorado Department of Public Health and Environment / Air Pollution Control Division 

2. 2007 Emission Inventory Summary 

This section presents the 2007 emission inventories for the attainment/maintenance plan. 

Table 1. 2007 PM10 Emission Inventory (tons per year). 

V\rea and Mobile Sources PM-I0(TonsfYear 

Agriculture 0.98 

Commercial Cooking 4.26 

Construction 49.40 

Fuel Combustion 0.03 

Highway Vehicles 1.28 

Non-Road 9.22 

Paved Road-Dust 67.11 

Structure Fires 0.04 

Unpaved Road-Dust 59.31 

Woodbuming 42.83 

TOTAL 234.46 

PMlO Attainment/Maintenance Planfor TellUride - Techmcal Support Document - EmISSIon Inventory 11/19109 

2 
Colorado Department of Public Health and Environment / Air Pollution Control Division 

3.2015 Emission Inventory Summary 

This section presents the 2015 emission inventories for the attainment/maintenance plan. 

Table 2. 2015 PMI0 Emission Inventory (tons per year). 

lArea and Mobile Sources PM-10 TonsNear 

Agriculture 0.98 

Commercial Cooking 5.51 

Construction 63.82 

Fuel Combustion 0.03 

Highway Vehicles 1.22 

Non-Road 11.92 

Paved Road-Dust 89.72 

Structure Fires 0.05 

Unpaved Road-Dust 79.2Q 

Woodbuming 55.34 

TOTAL 307.88 

PMIO Attainment/Maintenance Plan for Telluride - Techmcal Support Document - EmIssIon Inventory 11/19/09 

3 
Colorado Department of Public Health and Environment I Air Pollution Control Division 

4. 2021 Emission Inventory Summary 

This section presents the 2021 emission inventories for the attainment/maintenance plan. 

Table 3.2021 PM10 Emission Inventory (tons per year). 

[Area and Mobile Sources ~M-10(TonsfYear

Agriculture 0.98 

Commercial Cooking 6.44 

Construction 74.63 

Fuel Combustion 0.04 

Highway Vehicles 1.18 

Non-Road 13.94 

Paved Road-Dust 106.68 

Structure Fires 0.06 

Unpaved Road-Dust 94.28 

Woodbuming 64.72 

TOTAL 362.94 

PMIO Attainment/Maintenance Plan/or Telluride - Techmcal Support Document - EmissIOn Inventory /1/19/09 

4 
Colorado Department of Public Health and Environment / Air Pollution Control Division 

5. References 

APCD, 2008. Air Quality Control Commission Regulation Number 3. Stationary Source 

Permitting and Air Pollutant Emission Notice Requirements. 5 CCR 1001-5. 

< http://www.cdphe.state.co.us/regulations/airregs/lOO103stationarysourcepermitting.pdf> 

U.S. EPA, 2008. "2002 National Emissions Inventory Data & Documentation." 

< http://www.epa.gov/ttn/chief/net/2002inventory.html#documentation > 

PMIO Attainment/Maintenance Plan/or TellUride - Techmcal Support Document - EmISSIOn Inventory 11/19/09 

5 
Public Comments
 

40 CFR Part 51 Appendix V 2.1 (h)
 
Public Works Department 970-728-2177 Phone 

P.O. Box 397 970-728-0548 Fax 

TellWlde, CO 81435 

RECEIVED 

OCT 26 2009 

AIR QUALITY 

CONTIIOC CXJMSSION 

October 6, 2009 

Barbara Roberts 

Commission Chair 

Colorado Air Quality Control Commission 

4300 Cherry Creek Drive South 

Denver, CO 80246 

RE:	 Telluride AttainmentIMaintenance Area revised PMIO AttainmentIMaintenance 

Plan Endorsement 

Dear Ms. Roberts: 

Thank you for the opportunity to review the draft ofthe revised PM10 AttainmentIMaintenance 

Plan for the Telluride AttainmentlMaintenance Area. The plan updates the emissions inventories 

and demonstrates attainment with the 24-hour National Ambient Air Quality Standard (NAAQS) 

for PM10 through 2021. 

After reviewing the plan, the Town ofTelluride concurs with and endorses its findings. Our 

community remains committed to assuring good air quality for our citizens and appreciates the 

efforts ofthe Colorado Air Quality Control Commission. 

Sincerely, 

Mr. Stu Fraser, Mayor 

Telluride Town Council 

CC:	 Paul Tourangeau (Director, Colorado Air Pollution Control Division) 

Douglas A. Lempke (Administrator, Colorado Air Quality Control Commission) 

U:\ECOMM\Admmlstratlon\Town CounciJ\TC 2009 AirQuality Oct6 MMO,doc 
October 27,2009 

Barbara Roberts 

Commission Chair 

Colorado Air Quality Control Commission 

4300 Cherry Creek Drive SQuth 

Denver, CO 80246 

Dear Ms. Roberts: 

TOWN OF MOUNTAIN VILLAGE 

455 Mountain Village Blvd. Ste. A 

Mountain Village, CO 81435 

www.townofmountalnvillage.com 

P 970 728.8000 

F· 970 728.4342 

RECE'VED 

NOV 0;3 2009 

AIR QUALITY
 

CON'I"'Ol. C£JMSSION
 

Thank you for the opportunity to review the draft of the revised PM10 

Attainment/Maintenance Plan for the Telluride Attainment/Maintenance Area. 

The plan updates the emissions inventories and demonstrates attainment with 

the 24-hour National Ambient Air Quality Standard (NAAQS) for PM10 through 

2021. 

After reviewing the plan, the Town of Mountain Village concurs with and 

endorses its findings. Our community remains committed to assuring good air 

quality for our citizens and appreciates the efforts of the Colorado Air Quality 

Control Commission. 

Greg L. L.__ 

Town Manager 

CC:	 Paul Tourangeau 

(Director, Colorado Air Pollution Control Division) 

Douglas A. Lempke 

(Administrator, Colorado Air Quality Control Commission) 
SAN MIGUEL COUNTY
 

BOARD OF COMMISSIONERS 

ELAINE FISCHER ART GOODTIMES JOAN MAY 

October 7, 2009	 RECEIVED 

OCT 13 lUU9 

Barbara Roberts 

Commission Chair 

Colorado Air Quality Control Commission 

4300 Cherry Creek Drive South 

Denver, CO 80246 

Dear Ms. Roberts: 

The San Miguel County Board of Commissioners appreciates the opportunity to review the 

draft of the revised PMIO AttainmentlMaintenance Plan for the Telluride AttainmentJ 

Maintenance Area. The plan updates the emissions inventories and demonstrates 

attainment with the 24-hour national Ambient Air Quality Standard (NAAQS) for PM10 

through 2021. 

After reviewing the plan, San Miguel County concurs with and endorses its findings. Our 

community remains committed to assuring good air quality for our citizens and appreciates 

the efforts of the Colorado Air Quality Control Commission. 

Sincerely, 

SAN MIGUEL COUNTY, COLORADO 

BOARD OF COUNTY COMMISSIONERS 

Elaine R.c. Fischer, Chair 

Pc:	 Paul Tourangeau, Director, Colorado Air Pollution Control Division 

Douglas A. Lempke, Administrator, Colorado Air Quality Control Division 

P.O. BOX 1170 • Tellunde, Colorado 81435 • (970) 728-3844 • FAX (970) 728-3718 

www.saruruguelcounty.org 
RECF:IVED 

SEP 2009 

AIR. (.>;,1.:.,.' ;";'Y 

CONTROL COiV:' ISSION 

September 12, 2009 

Barbara Roberts 

Commission Chair 

Colorado Air Quality Control Commission 

4300 Cherry Creek Drive South 

Denver, CO 80246 

Dear Ms. Roberts: 

TOWN OF MOUNTAIN VILLAGE 

455 Mountain Village Blvd. Ste. A 

Mountain Village, CO 81435 

www.townofmountalnvillage.com 

p. 970 728.8000 

F· 970 728.4342 

Thank you for the opportunity to review the draft of the revised PM 10 

Attainment/Maintenance Plan for the Telluride Attainment/Maintenance Area. The plan 

updates the emissions inventories and demonstrates attainment with the 24-hour 

National Ambient Air Quality Standard (NAAQS) for PM10 through 2021. 

After reviewing the plan, the Town of Mountain Village, concurs with and 

endorses its findings. Our community remains committed to assuring good air quality 

for our citizens and appreciates the efforts of the Colorado Air Quality Control 

Commission. 

Greg L. park 

Town Manager 

Mountain Village, CO 

CC:	 Paul Tourangeau 

(Director, Colorado Air Pollution Control Division) 

Douglas A. Lempke 

(Administrator, Colorado Air Quality Control Commission) 
Adopted Statement of Basis,
 

Specific Statutory Authority and Purpose
 
VIII.Y Telluride PM10 

Adopted November 19, 2009 

The amendments to the "Ambient Air Quality Standards for the State of Colorado" Regulation adopted by 

the Commission establish mobile source emiSSions budgets for the Telluride PM10 attainment area. 

Federal Requirements 

Nothing In this rule change exceeds the minimum requirements of the federal act. 

Statutory Authority 

The authority to establish emiSSions budgets and to establish criteria for transportation conformity 

determinations IS Included In the general authority to adopt a State Implementation Plan set out In Section 

25-7-105(1), C.R.S. (2001). 

Findings pursuant to Section 25·7·110.8 

The mobile source emISSions budgets are based on EPA's MOBILE6 emiSSions model and EPAapproved methods for calculating fugitive dust emiSSions as required by federal regulations. All 

methodologies and Information made available by Interested parties have been considered. The 

emiSSions budgets reduce the potential for air pollution by capping emiSSions from mobile sources. In 

adopting this rule, the Commission chose the most cost-effective alternative. 

Further, these reVISions will Include any typographical, grammatical and formatting errors throughout the 

regulation. 
Adopted Language by the Commission
 

(in redline & footer noting adoption date and page numbers)
 
DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT
 

Air Quality Control Commission
 

AMBIENT AIR QUALITY STANDARDS
 

5 CCR 1001-14
 

V.	 Emission BUdgets for Attainment/Maintenance Areas in the State of Colorado 

V.A.	 Budgets 

V.A.1.	 The following Motor Vehicle Emission Budgets shall be utilized to assess the conformity of 

Transportation Plans, TIPs, and where appropriate, Projects, for the applicable periods and 

geographic areas indicated: 

Denver 

Attainment/Maintenance 

Area (Modeling 

Domain) 

PM 10: 2015 through 2021: 54 tons/day; 2022 

and beyond: 55 tons/day. 

Nitrogen Oxides: 2015 through 2021: 70 

tons/day; 2022 and beyond: 56 tons/day 

Trading provisions: Trading of PM 10 for NOx, or 

NOx for PM 10 to adjust emission budgets for 

purposes of demonstrating transportation 

conformity shall be allowed using the emission 

trading formula as follows: 

For trades necessary to increase a primary 

PM10 budget, 15.0 tons/day of NOx will be 

taken from the NOx budget to increase the 

primary PM10 budget by 1.0 tons/day, a ration 

of 15 to 1. 

For trades necessary to increase a NOx budget, 

1.0 tons/day of primary PM 10 will be taken from 

the primary PM10 budget to increase the NOx 

budget by 12.0 tons/day, a ratio of 1 to 12. 

Implementation of trading provisions: In the 

event the MPO cannot demonstrate consistency 

with the specific PM10 and NOx mobile source 

emission budgets, the trading provisions may be 

utilized only after the MPO has considered all 

reasonably available local control measures to 

meet the budgets. The MPO must demonstrate 

the need for trading through the usual 

consultation procedures for state implementation 

plan development delineated in Section IV (F) of 

AQCC Regulation Number 10, Criteria for 

Analysis of Conformity. 

If trading is utilized, the MPO shall include the 

following information in the transportation 

Ambient Air Quality Standards 

Adopted: November 19, 2009 Page 1 
conformity determination: 

(1 ) The budget for primary PIVI1 0 and NOx 

for each required year of the conformity 

determination, before trading is employed; (2) 

The portion of the original budget to be used to 

supplement a wanting budget, for each required 

year for the conformity determination; (3) The 

increased budget that results from trading, along 

with relevant calculations, and (4) the resulting 

primary PM1 0 and NOx budgets for each 

required year of the conformity demonstration. 

The MPO shall then compare projected 

emissions to the adjusted PM10 and NOx motor 

vehicle emission budgets to demonstrate 

conformity. 

Denver Attainment Ozone Precursors (attainment/maintenance 

Maintenance Area area boundary) NOx 2002 and beyond 134 tpsd 

VOC 2002 and beyond 119 tpsd (tpsd =tons per 

summer day) Carbon Monoxide 

(attainment/maintenance area boundary) 2013 

through 2020: 1625 tons/day; 2021 and beyond: 

1600 tons/day. 

Denver Metro 

Area/North Front Range 

Regional Emissions Budgets 

NOx: 122.9 tons/day 

VOCs: 109.2 tons/day 

Southern Sub-Regional Emissions Budgets 

8-Hour Ozone 

Nonattainment Area 

NOx: 102.4 tons/day 

VOCs: 89.7 tons/day 

Northern Sub-Regional Emissions Budgets 

NOx: 20.5 tons/day 

VOCs: 19.5 tons/day 

Aspen (Modeling Area) PM102015 and Beyond: 16,2441bs.lday 

Calion City PM102020 and Beyond: 1,613 Ibs.lday 

PM10 2015 and Beyond: 7,534lbs.lday 

PM102021 and Beyond: 946 Ibs.lday 

PM102015 and Beyond: 21,773Ibs.lday 

Lamar (Modeling Area) 

Pagosa Springs 

(Modeling Area) 

Steamboat Springs 

(Modeling Area) 

Ambient Air Quality Standards 

Adopted: November 19, 2009 Page 2 
Telluride (Modeling 

Area) 

Longmont 

Attainment/Maintenance 

Area 

Colorado Springs 

Attainment/Maintenance 

Area 

Ft. Collins' 

Attainment/Maintenance 

Area 

Greeley Area 

Attainment/Maintenance 

Area 

PM10~2021 and Beyond: -W,OO-+1,108
 

Ibs./day
 

Carbon Monoxide 2010 through 2014: 43
 

tons/day 2015-2019: 43 tons/day 2020 and
 

Beyond: 43 tons/day
 

Carbon Monoxide 2010 and Beyond: 531
 

tons/day
 

Carbon Monoxide 2005 through 2009: 99
 

tons/day2010 through 2014: 98 tons/day2015
 

and Beyond: 94 tons/day
 

Carbon Monoxide 2005 through 2009: 63
 

tons/day2010 through 2014: 62 tons/day2015
 

and Beyond: 60 tons/day
 

V.A.2.	 Geographic Coverage 

Unless otherwise specified, the geographic coverage of each of the area Motor Vehicle 

Emissions Budgets shall be the nonattainment or attainment maintenance area as defined in the 

respective state implementation plans. 

V.A.3.	 The Motor Vehicle Emissions Budget for PM10 applies to total primary PM10 emissions, including 

emissions from tailpipe exhaust, unpaved roads (except for the Denver PM10 nonattainment 

area), re-entrained road dust and street sand. It does not include precursor or secondary 

emissions, which, where appropriate, are covered under separate bUdgets. 

V.A.4,	 Effective Dates 

V.A.4.a. Denver Carbon Monoxide 

The 1,520 tons per day (2013 and beyond) carbon monoxide emission budget 

established in Section V.A.1. shall take effect as a matter of state law when such budget 

takes effect as a matter of federal law pursuant to 40 CFR Section 93.118. Until such 

time as the 1,520 tons per day budget takes effect pursuant to this section and 40 CFR 

Section 93.118, the carbon monoxide emission budgets for the Denver CO 

attainment/maintenance area shall be 800 tons per day (2002 and beyond). 

V.A.4. b, Colorado Springs Carbon Monoxide 

The 531 tons per day carbon monoxide emission budget established in Section V.A.1. 

shall take effect as a matter of state law when such budget takes effect as a matter of 

federal law pursuant to 40 CFR Section 93.118. Until such time as the 531 tons per day 

budget takes effect pursuant to this section and 40 CFR Section 93.118, the carbon 

monoxide emission budget for the Cobrado Springs CO attainment/maintenance area 

shall be 270 tons per day (2001 and beyond). 

V.A.4,c. Reserved 

Ambient Air Quality Standards 

Adopted: November 19, 2009 Page 3 
V.A.4.d. Reserved 

V.A.4.e.Aspen PM 10 

The 16,244 pounds-per-day PM1 0 emission budget established in Section V.A.1. shall 

take effect as a matter of state law when such budget takes effect as a matter of federal 

law pursuant to 40 CFR Section 93.118. Until such time as the 16,244 pounds-per-day 

budget takes effect pursuant to this section and 40 CFR Section 93.118, the PM1 0 

emission bUdget for the Aspen PM10 Nonattainment Area shall be 13,974 pounds-perday. 

V.A.4.f. Pagosa Springs PM10 

The 946 pounds-per-day PM 10 emission budget established in Section V.A.1. shall take 

effect as a matter of state law when budget takes effect as a matter of federal law 

pursuant to 40 CFR Section 93.118. Until such time as the 946 pounds-per-day budget 

takes effect pursuant to this section and 40 CFR Section 93.118, the PM10 emission 

budget for the Pagosa Springs PM10 attainment/maintenance area shall be 7,486 

pounds-per-day. 

V.A.4.g.Canon City PM10 

The 1,:-1-613 pounds-per-day PM10 emission budget established in Section V.A.1. shall 

take effect as a matter of state law when such budget takes effect as a matter of federal 

law pursuant to 40 CFR Section 93.118. Until such time as the 1,613 pounds-per-day 

budget takes effect pursuant to this section and 40 CFR s~ection 93.118, the PM1 0 

emission budget for the Canon City PM1 0 attainment/maintenance area shall be 7,439 

pounds-per-day. 

V.A.4. h. Lamar PM 10 

The 7,534 pounds-per-day PM10 emission bUdget established in Section V.A.1. shall 

take effect as a matter of state law when such bUdget takes effect as a matter of federal 

law pursuant to 40 CFR Section 93.118. Until such time as the 7,534 pounds-per-day 

budget takes effect pursuant to this section and 40 CFR Section 93.118, the PM1 0 

emission budget for the Lamar PM10 Nonattainment Area shall be 1,884 pounds-perday. 

V.A.4.i. Steamboat Springs PM1 0 

The 21,773 pounds-per-day PM1 0 emission budget established in Section V.A.1. shall 

take effect as a matter of state law when such budget takes effect as a matter of federal 

law pursuant to 40 CFR Section 93.118. Until such time as the 21,773 pounds-per-day 

budget takes effect pursuant to this section and 40 CFR Section 93.118, the PM1 0 

emission budget for the Steamboat Springs PM1 0 Nonattainment Area shall be 20,682 

pounds-per-day. 

V.A.4.j. Telluride PM10 

The 1,108 pounds-per-day PM10 emission bUdget established in Section V.a.1. shall 

take effect as a matter of state law when such budget takes effect as a matter of federal 

law pursuant to 40 CFR Section 93.118. Until such time as the 1,108 pounds-per-day 

budget takes effect pursuant to this section and 40 CFR Section 93.118, the PM10 

Ambient Air Quality Standards 

Adopted: November 19, 2009 Page 4 
emission budget for the Telluride PM1 0 Attainment Area shall be 10,001 pounds-per-day 

(2012 and beyond). 

VIII. Statements of Basis, Specific Statutory Authority and Purpose 

VIII.Y Telluride PM10 

Adopted November 19, 2009 

The amendments to the "Ambient Air Quality Standards for the State of Colorado" Regulation adopted by 

the Commission establish mobile source emissions budgets for the Telluride PM10 attainment area. 

Federal Requirements 

Nothing in this rule change exceeds the minimum requirements of the federal act. 

Statutory Authority 

The authority to establish emissions budgets and to establish criteria for transportation conformity 

determinations is included in the general authority to adopt a State Implementation Plan set out in Section 

25-7-105(1), C.R.S. (2001). 

Findings pursuant to Section 25-7-110.8 

The mobile source emissions bUdgets are based on EPA's MOBILE6 emissions model and EPAapproved methods for calculating fugitive dust emissions as required by federal regulations. All 

methodologies and information made available by interested parties have been considered. The 

emissions budgets reduce the potential for air pollution by capping emissions from mobile sources. In 

adopting this rule, the Commission chose the most cost-effective alternative. 

Further, these revisions will include any typographical, grammatical and formatting errors throughout the 

regulation. 

Ambient Air Quality Standards 

Adopted: November 19, 2009 Page 5 
State Implementation Plan Element
 

Adopted by the Commission
 

40 CFR Part 51 Appendix V 2.1 (d) 
Revised PM10 Attainment/Maintenance Plan

Telluride Attainment/Maintenance Area

CONTACT INFORMATION

Colorado Air Quality Control Commission

4300 Cherry Creek Drive South

Denver, CO 80246

(303) 692-3476

Air Pollution Control Division

4300 Cherry Creek Drive South

Denver, CO 80246

(303) 692-3100
Telluride PM10 Attainment/Maintenance Plan Revision 11/19/09

1

TABLE OF CONTENTS 

Chapter 1, Introduction, is provided as background 

information only and is not to be construed to be part of the 

federally-enforceable State Implementation Plan.

Chapter 2, Continued Maintenance of the PM10 NAAQS, 

describes the PM10 monitoring network and demonstrates 

with monitored data the continued maintenance of the PM10

NAAQS.

Chapter 3, Attainment/Maintenance Plan, presents the 

emissions inventories, control measures and other 

requirements to ensure maintenance of the PM10 standard 

through the year 2021. This submittal demonstrates 

maintenance of the PM10 standard for the 2nd ten-year period 

beyond 2000, the year the Colorado Air Quality Control 

Commission approved the PM10 Redesignation Request and 

Maintenance Plan for the Telluride area (EPA formally 

redesignated Telluride to attainment in 2001).
Telluride PM10 Attainment/Maintenance Plan Revision 11/19/09

2

Chapter 1: Introduction

The State of Colorado is submitting to the U.S. Environmental Protection Agency (EPA), 

in accordance with CAAA Section 176A(b), a revised PM10 Attainment/Maintenance Plan for the 

Telluride Attainment/Maintenance Area that demonstrates continued attainment/maintenance of 

the 24-hour PM10 National Ambient Air Quality Standard (NAAQS) through 2021. 

The Telluride area was redesignated to attainment status by the EPA (66 FR 32556) on 

June 15, 2001 (effective date, August 14, 2001). Colorado submitted a redesignation request 

and attainment maintenance plan on May 10, 2000. The plan demonstrated 

attainment/maintenance of the PM10 NAAQS through 2012 in accordance with CAAA Section 

176A(a). This attainment/maintenance plan, which is being submitted for inclusion in the State’s 

federally-enforceable State Implementation Plan (SIP), provides for maintenance of the national 

standard for PM10 in the Telluride area through 2021.

Colorado Air Quality Control Commission

The Colorado Air Quality Control Commission (AQCC) is a regulatory body with 

responsibility for adopting air quality regulations consistent with State statute. This includes the 

responsibility and authority to adopt State Implementation Plans (SIPs) and their implementing 

regulations. The Commission takes action on SIPs and regulations through a public rule-making 

process. The Commission has nine members who are appointed by the Governor and confirmed 

by the State Senate.

National Ambient Air Quality Standards for PM10 

In 1971, the EPA set National Ambient Air Quality Standards (NAAQS) for several air 

pollutants, including total suspended particulates (TSP), defined as particles with an 

aerodynamic diameter of less than 40 microns. In 1987, the EPA changed the particulate matter 

standard to include only those particles with an aerodynamic diameter of less than or equal to 10 

microns (commonly referred to as PM10). The current PM10 NAAQS allow for a maximum 24-

hour average of 150 ug/m3

. The 24-hour PM10 NAAQS may not be exceeded more than once 

per year on average over three years.

An annual average of 50 micrograms per cubic meter (ug/m3

) was revoked by the EPA in 

2006 due to a lack of evidence linking long-term exposure to health problems. 

There are both primary and secondary air quality standards. The primary standards are 

set to protect human health, with a margin of safety to protect the more sensitive persons in the 

population, such as the very young, elderly and the ill. Secondary standards are set to protect 

property, materials, aesthetic values and general welfare. For PM10, the national primary and 

secondary standards are the same. The numerical levels of the standard are subject to change, 

based on new scientific evidence summarized in air quality criteria documents. 

In general, demonstrating attainment requires collecting representative air monitoring 

data and using approved measuring instruments and procedures, with adequate quality 

assurance and quality control. The three most recent years are examined, during which the 

average annual number of exceedances must be less than or equal to one. 
Telluride PM10 Attainment/Maintenance Plan Revision 11/19/09

3

Air quality measurements in the Telluride area satisfy this requirement, as shown in 

Section 2 “Attainment of the PM10 standard.”

Telluride Nonattainment Area Classification History 

Because of observed problems with air particles, monitoring of total suspended 

particulates (TSP) began in 1973, and continued through 1987. In 1987, based on relatively high 

TSP levels, the Telluride area was designated by the EPA as a "Group I" nonattainment area of 

concern, i.e., an area with a strong likelihood of violating the PM10 NAAQS. In 1990, the 

Telluride area was designated a "moderate" nonattainment area pursuant to section 107(d)(4)(B) 

of the CAAA.

The first PM10 SIP Element was adopted by the AQCC in July 1988. The emission 

controls included road paving and coal/woodburning restrictions. EPA Region VIII intended to 

approve the SIP Element, though it eventually was rejected once the CAA was amended in 1990 

and new, more stringent requirements were in place. A new Telluride area SIP Element was 

adopted by the AQCC in January 1993 and supplemented in November 1993. The control 

measures included the paving and woodburning measures from the 1988 SIP Element and new 

road paving contingency measures. EPA partially/conditionally approved the SIP Element on 

September 19, 1994 (59 FR 47807).

The Telluride area was redesignated to attainment status effective August 14, 2001, after 

the EPA approved the PM10 Redesignation Request and Maintenance Plan.

Telluride PM10 Attainment/Maintenance Area 

The boundaries for the Telluride/Mountain Village/San Miguel County PM10 

attainment/maintenance area are defined by Air Quality Control Commission as follows:

The area begins at the intersection of Colorado State Highway 145 and the Telluride 

service area boundary, as it existed in 1991. At Remine Creek, the attainment/maintenance 

boundary follows the service area boundary for 9.65 miles to the eastern edge of the area, 

continuing to follow the 9,200 foot contour line. The boundary then intersects Bear Creek. Here 

the attainment/maintenance boundary diverges from the service area boundary (9,200 foot 

contour line). The attainment/maintenance boundary continues in a west, southwest direction for 

0.92 miles from the intersection of the 9,200 foot contour line and Bear Creek to the top of ski lift 

number 9 in the Telluride Ski Area at an elevation of about 11,900 feet. The boundary then shifts 

and runs in a north-westerly direction for 0.83 miles from the top of lift 9 to the top of lift 7, which 

is located at an elevation of 10,490 feet. From the top of lift 7, the boundary continues in a northwesterly direction for 0.5 miles to the intersection of lift 3 with the 10,000 foot contour line. The 

boundary follows the 10,000 foot contour line in a south, south-west direction for 3.2 miles, until it 

intersects Skunk Creek. Here the boundary diverges from the 10,000 foot contour line and 

follows Skunk Creek in a northerly direction for 2.25 miles. At the intersection of Skunk Creek 

and Colorado State Highway 145, the boundary leaves the creek and follows Highway 145 in a 

northerly direction until it meets the service area boundary as it existed prior to changes adopted 

in 1991.
Telluride PM10 Attainment/Maintenance Plan Revision 11/19/09

4

This area essentially includes the Town of Telluride, the Town of Mountain Village, and 

portions of San Miguel County, which are within the Telluride airshed. A map illustrating the area 

boundary is shown in Figure 1.

Figure 1.

Map of the Telluride/Mountain Village/San Miguel County 

Attainment/Maintenance Area
Telluride PM10 Attainment/Maintenance Plan Revision 11/19/09

5

Continued Attainment of the PM10 Standard 

Chapter Two presents the most recent five years (2004-08) of monitored data, and shows 

that Telluride area has maintained attainment of the standard since the redesignation was 

approved.

Attainment/Maintenance Plan

Chapter Three contains the core elements EPA has established as necessary for 

approval of maintenance plans: 

1. Description of the control measures for the maintenance period

2. Emission inventories for current and future years

3. Maintenance demonstration

4. Mobile source emissions budget

5. Approved monitoring network

6. Verification of continued attainment

7. Contingency plan

8. Subsequent maintenance plan revisions
Telluride PM10 Attainment/Maintenance Plan Revision 11/19/09

6

CHAPTER 2: CONTINUED MAINTENANCE OF PM10 NAAQS 

Attainment of the 24-hour PM10 NAAQS, which is 150 micrograms per cubic meter 

(ug/m3

) of PM10 in ambient air (based on a 24-hour averaging time for the measurement) is 

demonstrated when the average annual number of expected exceedances is less than or equal 

to one. The following information demonstrates, as required by Section 107(d)(3)(E) of the 

Clean Air Act, that the Telluride area continues to attain the national 24-hour standard for PM10. 

This demonstration is based on quality assured monitoring data.

PM10 Monitoring

PM10 ambient air monitoring in the Telluride area consists of one station at 333 West 

Colorado Avenue. 

This section shall not be construed to establish a monitoring network in the federallyenforceable SIP. EPA has already approved a monitoring SIP for the State of Colorado and this 

description of the PM10 monitoring network shall not be construed to amend such monitoring 

SIP.

Monitoring Results and Attainment Demonstration

The monitoring data presented below verifies that the Telluride area is attaining the 24-

hour PM10 NAAQS, in accordance with the federal requirements of 40 CFR Part 58. The threeyear average of expected values greater than 150 ug/m3 ppm is less than or equal to one. 

Summary data are shown in the following table.

Figure 2. Monitored PM10 Values

24-hour maximum PM10 values

micrograms per cubic meter (ug/m3)

(PM10 NAAQS = 150 ug/m3)

2001 2002 2003 2004 2005 2006 2007 2008

333 W. Colorado Ave. 59 67 97 72 70 69 77 82

 

Quality Assurance Program

PM10 monitoring data for the Telluride area have been collected and quality-assured in 

accordance with 40 CFR, Part 58, Appendix A, EPA’s “Quality Assurance Handbook for Air 

Pollution Measurement Systems, Vol. 11; Ambient Air Specific Methods”, the APCD’s Standard 

Operating Procedures Manual, and Colorado’s Monitoring SIP which EPA approved in 1993. 

The data are recorded in EPA’s AIR QUALITY SYSTEM (AQS) and are available for public 

review at the APCD and through EPA’s AQS database. 

CHAPTER 3: ATTAINMENT/MAINTENANCE PLAN
Telluride PM10 Attainment/Maintenance Plan Revision 11/19/09

7

This attainment/maintenance plan is a SIP revision and provides for maintenance of the 

relevant NAAQS in the area for the ten-year period through 2021.

The EPA has established the core elements listed below as necessary for approval of 

attainment/maintenance plans:

• Description of the control measures for the maintenance period

• Emission inventories for current and future years

• Maintenance demonstration

• Mobile source emissions budget

• Approved monitoring network

• Verification of continued attainment

• Contingency plan

• Subsequent maintenance plan revisions

Attainment/Maintenance Plan Control Measures

Control Measures Included in the Attainment/Maintenance Plan

The Telluride area will rely on the control programs listed below to demonstrate 

maintenance of the 24-hour PM10 standard through 2021. No emission reduction credit has 

been taken in the attainment/maintenance demonstration for any other current State or local 

control programs and no other such programs, strategies, or regulations shall be incorporated or 

deemed as enforceable measures for the purposes of this maintenance demonstration.

The attainment/maintenance plan takes credit for the following federally-enforceable 

control measures, which, except where otherwise noted, are included in the SIP:

Federal fuels and tailpipe standards and regulations

Credit is taken in this attainment/maintenance plan for current federal regulations 

concerning motor vehicles, fuels, small engines, diesels, and non-road mobile sources. While 

credit is taken for these federal requirements, they are not part of the Colorado SIP. 

Woodburning

Air Quality Control Commission Regulation No. 4 covers wood stoves, conventional 

fireplaces and woodburning on high pollution days, as approved by EPA as part of the federal 

SIP in 1997. This maintenance plan makes no changes to Regulation No. 4.

The Town of Telluride and San Miguel County have adopted wood and coal burning 

emission reduction measures. These wood and coal burning controls were adopted and 

implemented throughout the 1980s and early 1990s, were approved by EPA in 1994, and are 

defined in detail in Section II. A. of the “State Implementation Plan-Specific Regulations for 

Nonattainment – Attainment/Maintenance Areas (Local Elements).

All of these requirements remain effective, until they are removed or revised by a future 

SIP revision. 
Telluride PM10 Attainment/Maintenance Plan Revision 11/19/09

8

Stationary Sources

Emissions from stationary sources of pollution are regulated by several Air Quality 

Control Commission Regulations:

1) Regulation No. 1 regulates emissions of particulates, smoke, sulfur dioxide, and 

nitrogen oxides and establishes limits on these pollutants from covered sources. 

Sections I-IV, Sections VI-IX, and Appendices A and B are already included in the 

approved SIP. This maintenance plan incorporates the regulatory limits in 

calculations of maximum allowable emissions for stationary sources. No 

additional revisions are made to Regulation No. 1 as part of the maintenance plan 

revision.

2) Regulation No. 3 lays out provisions of the State of Colorado’s stationary source 

permitting program. Parts A and B of Regulation No. 3 are already included in the 

approved SIP. Part C implements the federal operating permit program and this 

reference to Part C of Regulation No. 3 shall not be construed to mean that these 

regulations are included in the SIP.

 

3) Regulation No. 6 implements the federal standards of performance for new 

stationary sources. This maintenance plan makes no changes to this regulation. 

This reference to Regulation No. 6 shall not be construed to mean that these 

regulations are included in the SIP.

4) The Common Provisions Regulation contains general provisions applicable to all 

emissions sources in Colorado. This maintenance plan makes no changes to this 

regulation.

The emission inventories for stationary sources supporting the maintenance 

demonstration have followed all relevant EPA rules and guidance documents for 

calculating such emissions.

As an attainment/maintenance area since August 14, 2001, the State and federal 

attainment PSD permitting requirements remain in effect in the Telluride area. This 

program requires the application of Best Available Control Technology when constructing 

new or modified major stationary sources.

Street Sanding Controls

There is a requirement that any user that applies street sanding material in the Telluride 

attainment/maintenance area must use materials containing less than two percent fines. This 

strategy was adopted in 1994 and approved by EPA in 1996, and it is defined in detail in Section 

II.B. of the “State Implementation Plan-Specific Regulations for Nonattainment –

Attainment/Maintenance Areas (Local Elements).
Telluride PM10 Attainment/Maintenance Plan Revision 11/19/09

9

Emission Inventories 

This section presents emission inventories for the attainment/maintenance plan. 

All of the inventories were developed using EPA-approved emission modeling methods 

and updated transportation and demographics data. The PM10 attainment/maintenance plan

Technical Support Document contains detailed information on model assumptions and 

parameters for each source category.

Figure 3. Emission Inventories

PM10 Emission Inventory (PM 10 Pounds Per Day).

Area and

Mobile Sources Source Category

2007 2015 2021

Agriculture 5.39 5.39 5.39

Commercial Cooking 23.35 30.17 35.29

Construction 270.66 349.68 408.94

Fuel Combustion 0.14 0.18 0.22

Highway Vehicles 6.99 6.69 6.46

Non-Road 50.54 65.29 76.36

Paved Road-Dust 367.72 491.61 584.53

Structure Fires 0.22 0.28 0.33

Unpaved Road-Dust 324.98 434.47 516.59

Woodburning 234.71 303.22 354.61

TOTAL 1284.70 1686.99 1988.71
Telluride PM10 Attainment/Maintenance Plan Revision 11/19/09

10

Maintenance Demonstration 

This attainment/maintenance plan provides for maintenance of the NAAQS through the 

year 2021.

Because there have never been exceedances of the annual standard in the Telluride

area, an analysis for maintenance of the annual standard was not prepared. Protection of the 24-

hour standard should be sufficient to protect the annual standard since the 24-hour standard has 

always been the standard of concern.

A design day concentration of 82 ug/m3 has been selected as a conservative value that 

represents the highest 24-hour maximum PM10 value recorded in the Telluride area between 

2006-2008. This 82 ug/m3 concentration occurred on March 28, 2008. No reduction for 

background values has been taken into account for the design day value, making the 82 ug/m3 a 

conservative estimate of PM10 ambient air concentrations in the Telluride area, meaning that the 

design value likely overstates the actual amount of PM10.

The emissions inventory data presented in this report is used to determine the growth in 

PM10 emissions from the 2007 base year to the 2021 maintenance year. The emissions 

inventory shows an increase in PM10 from 1,285 pounds per day in 2007 to 1,989 pounds per 

day in 2021. This represents an increase of 54.79 percent in emissions:

1,989/1,285 =1.5479, or 54.79 percent.

The design day concentration of 82 ug/m3 of PM10 is then increased 54.79 percent to 

“roll forward” to the 2021 attainment year. This roll-forward modeling shows a 2021

concentration of 126.9 ug/m3 :

82 ug/m3 x 1.5479 = 126.9 ug/m3

 

Since 126.9 ug/m3 is below the 150 ug/m3 standard, maintenance is demonstrated 

through 2021.

 

Emissions Budget for PM10

Federal "transportation conformity" regulations provide for the use of mobile source 

emission budgets in making conformity determinations in the area. The emission budget serves 

as a ceiling on mobile source emissions that federally funded or approved transportation projects 

must comply or "conform" with.

This maintenance plan establishes an emission budget for the area of 1,108 pounds of 

PM10 per day for 2021 and beyond for the Telluride area. This budget is the total of the 2021

mobile source PM10 emissions presented in the Figure 3 table above, which includes emissions 

from vehicle exhaust and road dust. This budget has been adopted in the AQCC’s "Ambient Air 

Quality Standards for the State of Colorado" regulation.
Telluride PM10 Attainment/Maintenance Plan Revision 11/19/09

11

Monitoring Network / Verification of Continued Attainment 

The APCD will continue to operate an appropriate air quality monitoring network of NAMS 

and SLAMS monitors in accordance with 40 CFR Part 58 to verify the continued attainment of 

the PM10 NAAQS. Annual review of the NAMS/SLAMS air quality surveillance system will be 

conducted in accordance with 40 CFR 58.20(d) to determine whether the system continues to 

meet the monitoring objectives presented in Appendix D of 40 CFR Part 58.

The State will also track and document measured mobile source parameters (e.g., 

vehicle miles traveled, congestion, fleet mix, etc.) and new and modified stationary source 

permits. If these and the resulting emissions change significantly over time, the APCD will 

perform the appropriate studies to determine 1) whether additional and/or re-sited monitors are 

necessary and 2) whether mobile and stationary source emission projections are on target. 
Telluride PM10 Attainment/Maintenance Plan Revision 11/19/09

12

Contingency Provisions 

Section 175A(d) of the CAA requires that the maintenance plan contain contingency 

provisions to assure that the State will promptly correct any violation of the PM10 NAAQS 

standard which occurs after redesignation to attainment. Attainment/maintenance areas are not 

required to have preselected contingency measures, just a list of measures that could be 

considered for future implementation.

The contingency plan must also ensure that the contingency measures are adopted 

expeditiously once the need is triggered. The primary elements of the contingency plan are:

1) the list of potential contingency measures; 2) the tracking and triggering mechanisms to 

determine when contingency measures are needed; and 3) a description of the process for 

recommending and implementing the contingency measures.

The triggering of the contingency plan does not automatically require a revision of the 

SIP, nor is the area necessarily redesignated once again to nonattainment. Instead, the State 

will normally have an appropriate amount of time to correct the violation by implementing one or 

more contingency measures as necessary. In the event that violations continue to occur after 

contingency measures have been implemented, additional contingency measures will be 

implemented until the violations are corrected.

Potential Contingency Measures

Section 175A(d) of the CAA requires the attainment/maintenance plan to include 

as potential contingency measures all of the control measures contained in the SIP 

before redesignation which were relaxed or modified through the attainment/maintenance 

plan. For the Telluride area, there were no control measures relaxed or modified.

The State may evaluate potential strategies in order to address any future 

violations in the most appropriate and cost-effective manner possible. Potential measures 

appropriate for the Telluride area include, but are not limited to:

o Increased street sweeping requirements

o Expanded, mandatory use of alternative de-icers

o More stringent street sand specifications

o Road paving requirements

o Woodburning restrictions

o Re-establishing new source review permitting requirements for stationary 

sources

o Other emission control measures appropriate for the area based on the 

consideration of cost-effectiveness, PM10 emission reduction potential, 

economic and social considerations, or other factors that the State deems 

appropriate.
Telluride PM10 Attainment/Maintenance Plan Revision 11/19/09

13

Tracking and Triggering Mechanisms

Tracking

The primary tracking plan for the Telluride area consists of continuous 

PM10 monitoring by APCD as described above. APCD will notify EPA; the 

AQCC; the Colorado Department of Transportation (CDOT); and the governments 

for the Town of Telluride, the Town of Mountain Village and San Miguel County

of any exceedance of the 24-hour NAAQS within 45 days of occurrence.

Triggering Contingency Measures

An exceedance of the 24-hour PM10 NAAQS may trigger a voluntary, local 

process by the Town of Telluride, the Town of Mountain Village, San Miguel County and 

APCD to identify and evaluate potential contingency measures. However, the only 

federally-enforceable trigger for mandatory implementation of contingency measures 

shall be a violation of the NAAQS. Specifically, the three-year average of expected 

exceedances at a monitoring site would have to be greater than 1.0 for a violation to 

occur.

Process for Recommending and Implementing Contingency Measures

The State will move forward with mandatory implementation of contingency 

measures under the SIP if a violation of the PM10 NAAQS occurs.

No more than 60 days after being notified by the APCD that a violation of the 24-

hour PM10 NAAQS has occurred, the Town of Telluride, the Town of Mountain Village, 

and San Miguel County, in coordination with the APCD, AQCC and CDOT will initiate a 

process to begin evaluating potential contingency measures. 

The AQCC will then hold a public hearing to consider the contingency measures 

recommended by the Town of Telluride, the Town of Mountain Village, San Miguel 

County, APCD and CDOT along with any other contingency measures the Commission 

believes may be appropriate to effectively address the violation. The necessary 

contingency measures will be adopted and implemented within one year after a violation 

occurs.

Subsequent Attainment/Maintenance Plan Revisions

The previously approved attainment/maintenance plan addressed the period through 

2012. The purpose of this attainment/maintenance plan revision is to provide for maintenance of 

the PM10 standard for an additional period through 2021. No additional revisions of the PM10

Attainment/Maintenance Plan are anticipated at this time. If future changes in mobile source 

models or other unforeseen considerations raise potential issues with maintaining the PM10 

standard, the State will address the need to revise the attainment/maintenance plan at that time.
Colorado Air Quality Control Commission 

Meeting Minutes 

- Action ofthe Commission to SIP Element Revision 

40 CFR Part 51 Appendix V 2.1 (g) 
STATE OF COLORADO
 

Bill Ritter, Jr., Governor 

Ned Calonge, M.D., Interim Executive DIrector 

COLORADO AIR QUALITY CONTROL COMMISSION 

hllp://www.cdphe.Slale.co.us 

4300 Cherry Creek Drive South 

OED-OLRA-A5 

Denver, Colorado 80246-\530 

Phone (303) 692-3\ 00 Colorado Department Fax (303) 691-7702 of Public Health TOO (303) 69\-7700 and Environment 

Colorado Air Quality Control Commission 

November 19,2009 

MEETING MINUTES 

Location:	 Colorado Department of Public Health & Environment 

4300 Cherry Creek Drive South, Sabin Room 

Denver, CO 80246 

Members Present:	 Robert Arnott Radford Byerly Ashley Campsie 

Teresa Coons John Loewy Dawn Meyers 

Barbara Roberts Jon Slutsky Jim Wilson 

Members Absent:	 None 

Commission Staff:	 Doug Lempke Theresa Martin 

Division Staff:	 Paul Tourangeau Mike Silverstein Curt Taipale Gordon Pierce 

Chris Dann Curt Taipale Lisa Silva Dan Ely 

Attorney General's Office: Jerry Goad 

CALL TO ORDER AND DETERMINATION OF A QUORUM 

Chair Roberts called the meeting to order at 1:00 PM and detennined that a quorum of 

Commissioners was now present with nine Commissioners. 

ApPROVAL OF MEETING MINUTES FOR OCTOBER 15,2009 

Chair Roberts asked the Commission ifthere were any modifications to the minutes. Roberts 

noted that on Page 8, 4th line down a comment that she made should be stricken. 

Motion: To approve the October 15,2009 Meeting Minutes as modified by CommIssioner 

Roberts 

Moved: Commissioner Slutsky 

Second: Commissioner Byerly 

Discussion: none 

Carried: 9-0 
PUBLIC COMMENT 

Chair Roberts asked if there were any members of the public who wished to make a comment on 

any air pollution issue not on the agenda. Dr. Doug Lawson of NREL spoke briefly regarding 

weekday versus weekend changes in emissions and whether ambient data could be used to 

represent VMT and NOx reductions without relying upon any models or assumptions. Lawson 

asked the Commission to convene a technical meeting to review the effects of NOx emissions on 

air quality along the Front Range. Eddie Lind of Fort Morgan commented that he represented 

concerned citizens of the area regarding the Sugar Beet factory. Lind stated concerns regarding 

jurisdiction of the factory noting that the County regulates but the City had no control. Lind 

commented that the settling ponds were worrisome due to the potential toxic odors. Lind noted 

that citizens were interested in volunteering to read monitors; would like soil/water/river samples 

ran; would like conversations held with the health staff regarding the decreased health of the 

citizens; dust control is an issue. Lind noted he could get at least 1,000 signatures on a petition 

in a week. Lind commented that there wasn't a problem until Western Sugar took over the 

factory. Tourangeau noted that there was a Title V permit and the factory was inspected 

regularly. Tourangeau noted that there hadn't been any odor violations. Roberts explained the 

difference between pollution issues versus odor issues. Lind asked where the readings were 

being conducted and if the citizens could be part of the inspections. Tourangeau noted that 

inspections were primarily complaint driven and that there were normally yearly inspections. 

Lind expressed great concerns that inspections were only yearly and that even employees of the 

plant that he knows personally have commented that the factory was in violation. Amott asked if 

there was a northeastern health department and Tourangeau noted that the Division didn't have a 

contract with them. Amott noted it appeared that there was also a water issue at hand too and 

that this was worth looking into. Roberts thanked Lind for expressing his concerns and 

commented that this would be looked into. Lind thanked the Commission for hearing his 

concerns and reiterated that he would be happy to assist with inspections. David Wolfsey of 

Sonic Spark re-presented the Commission with documentation regarding his concerns regarding 

the HHO convertor noting that he believed it produces major destructive ECO pollutants such as: 

nitric acid, hydrogen cyanide and nitrogen oxides and that his concerns had not been addressed 

previously and wishes the Commission to look into this matter and his findings of this product. 

AGENDA REVIEW 

Chair Roberts asked Lempke to review the meeting agenda noting any items that may have 

changed, been added or deleted. Lempke commented that there weren't any changes to the 

agenda. 

REQUEST FQR PUBLIC HEARING DECEMBER 17,2009 

Denver Regional Council of Governments (DRCOG) Conformity 

At 1:38 PM Lisa Silva of the Division noted that the presentation would include information 

from the DRCOG regarding its anticipated Transportation Conformity findings regarding the 

2035 Regional Transportation Plan second cycle amendments and the 2008/2013 TIP. Silva 

commented that the NFRMPO was also in concurrence. Silva noted that neither the NFRMPO 

nor the Upper Front Range Transportation Planning Region had amended their plans but because 

they were part ofthe 8-Hour Ozone Nonattainment area, transportation conformity must be 

assured for those areas as well as the Denver region until the emission budgets for the individual 

are approved. Emily Chen ofthe DRCOG reviewed the Cycle 2 Amendments to the 2035 

Regional Transportation Plan and the 2008/2013 TIP. 

2 
Chen noted that the amendments included a new toll facility to the regional system and three 

partial interchanges associated with the Jefferson Parkway, widening to the roadway system on 

Federal Blvd and also on 144th Avenue, and a RTD station location change in the North Metro 

corridor. Chen reviewed with the Commission the conformity tests conducted and what the 

results indicated. The DRCOG, the NFRMPO and the Division requested that the Commission 

hold a public hearing in December for its anticipated Transportation Conformity findings 

regarding the 2035 Regional Transportation Plan and the 2008/2013 TIP. Byerly asked ifthis 

was a way to complete the beltway and Steve Cook of the DRCOG noted it was not, it is just a 

proposal at this time. Byerly commented that isn't it true that improving or widening roadways 

brings more traffic and more emissions. Cook noted that there still needs to have in depth 

studies environmentally and vehically. Campsie commented that she had received an email 

regarding concerns about vanpools. Campsie noted she would forward email to Lempke and 

Lempke would forward on to the other Commissioners. Wilson asked that all the maps be 

provided. 

Motion: To approve the motion for hearing on December 17,2009 

Moved: Commissioner Byerly 

Second: Commissioner Wilson 

Discussion: none 

Carried: 9-0 

RULEMAKING HEARINGS 

Pagosa Springs PMIO Maintenance Plan Revision 

At I :59 PM Curt Taipale of the Division presented to the Commission revisions to the PMIO 

maintenance plan for Pagosa Springs. Taipale noted that this was the second oftwo lO-year 

plans that were required by the Clean Air Act. Taipale explained that the documentation 

reflected that Pagosa Springs would continue to attain the PMIO National Ambient Air Quality 

Standard through 2021 and had never violated the PM 10 NAAQS in the past ten years though 

one exceedance had been recorded in 2000. Taipale commented that no additional control 

measures were required in order to maintain the standard. Taipale explained that this revision 

would satisfy the federal requirement for showing attainment for the second ten-year period after 

redesignation to attainment/maintenance and that no additional revisions ofthe PM10 

Maintenance Plan was expected. Taipale did note that if future changes in mobile source models 

or other unforeseen considerations arose that the Division would address them at that time. 

Motion: To adopt Pagosa Springs PMI 0 Maintenance Plan revisions as proposed by 

the Division 

Moved: Commissioner Loewy 

Second: Commissioner Campsie 

Discussion: none 

Carried: 9-0 

3
 
Telluride PMIO Maintenance Plan Revision 

At 2:06 PM Chris Dann of the Division presented to the Commission revisions to the PMIO 

maintenance plan for Telluride. Dann noted that this was the second of two lO-year plans that 

are required by the Clean Air Act. Dann explained that the documentation reflected that 

Telluride would continue to attain the PM 10 National Ambient Air Quality Standard through 

2021 and had never violated the PM 10 NAAQS. Dann commented that no additional control 

measures were required in order to maintain the standard. Dann explained that this revision 

would satisfy the federal requirement for showing attainment for the second ten-year period after 

redesignation to attainment/maintenance and that no additional revisions ofthe PM10 

Maintenance Plan was expected. Dann did note that if future changes in mobile source models 

or other unforeseen considerations arose that the Division would address them at that time. 

Amott questioned the 54% increase in emissions and Dann responded that it was a standard 

modeling growth factor that had been used. 

Motion: To adopt Telluride PM 10 Maintenance Plan revisions as proposed by the 

Division 

Moved: Commissioner Amott 

Second: Commissioner Meyers 

Discussion: none 

Carried: 9-0 

BRIEFINGS, DISCUSSIONS AND REpORTS 

Regulation Number 9: Smoke Management Program 

At 2: 14 PM Dan Ely of the Division provided an overview of the Smoke Management Program 

(SMP) noting that it addresses smoke/pollution from prescribed fires on public and private lands 

and that the program had been implemented in 1990 to protect public health and visibility. Ely 

discussed the current activities which included the pennits required, inspections, emissions 

inventory, stakeholder meetings, and the many relationships involved in the program. Ely 

commented that the projected costs for the SMP were proposed per regulation requirements and 

to cover the operating costs of the program. Ely noted that the Division would evaluate the SMP 

rules and implementation so as to support and increase where possible the appropriate 

responsible use of prescribed fire and to report the recommendations to the Commission by June 

30,2010. Ely indicated that the Division could not project the costs for 2010 with reasonable 

certainty until recently because of the unknown fiscal impacts on the SMP from HB09-1199 and 

that the Division concluded that a fee increase was not necessary. Ely reviewed the cost 

projection spreadsheet with the Commission. Ely concluded noting that overall there weren't 

any systemic issues with revenue recovery. Loewy asked what was included in the pennits and 

Ely replied that the pennit looked at locations such as vicinity in relation to homes, cubic feet of 

piles, fuel loading, and dispersion. Loewy asked how the Division assures compliance and Ely 

responded that a lot of it is a trust factor and the Division also conducts site visits. Roberts asked 

about the new program related to the standard and Ely responded that the Division didn't have all 

the answers, but would have a specific individual from the HB09-1199 funding in the Division to 

do additional studies of smoke and its impacts. Roberts asked about the role of the Division in 

implementing HB09-1199 and Ely indicated that the Division didn't know yet, but would return 

to the Commission with an approach. 

4· 
Coordinating the Development of Plans for Regional Haze/OzonelRMNP 

At 2:50 PM Mike Silverstein of the Division provided an overview of the plans including 

planning goals, backgrounds and activities, and timelines. Silverstein discussed the requirements 

for each of these programs and how individual program proposals would be developed in a 

coordinated fashion to avoid unnecessary regulatory overlap or duplication and provide for the 

efficient consideration, adoption and implementation of each proposal. Silverstein discussed the 

steps necessary to complete the requirements for each program and the relative timing to develop 

the proposals. Silverstein concluded noting that a lot of work had been accomplished over the 

past several months and that the Division would be evaluating and formulating an approach for 

advancing emission controls that benefit ozone, Regional Haze and Rocky Mountain National 

Park. Silverstein also commented that upon development of the proposals the Division would be 

conducting stakeholder meetings and then coming to the Commission for discussion. Roberts 

asked what near term meant regarding the interim plan and Silverstein responded that the 

Division should be ready to bring a proposal to the Commission in the June/July time frame. 

Meyers commented that there had been talks early that ozone had gone up in the Denver area and 

asked how these strategies were affecting the Denver monitor. Silverstein noted that where 

industrial reductions in NOx occur unfortunately there may be ozone increases at nearby 

monitors. 

Coons commented that it appeared that the focus was on ozone and Silverstein agreed that it was 

however the Division would be taking into consideration Regional Haze and RMNP. Roberts 

expressed concerns as the Division moves forward with all three programs together regarding 

technology, costs, air quality improvement; and doesn't want the Commission to be surprised by 

learning about these things at a hearing. Roberts suggested that the Commission should be kept 

in the loop as problematic issues emerge. Wilson asked where other states were in their 

Regional Haze SIP process and Silverstein commented that most of the states were in the public 

comment or just beginning the BART process of the SIP. Silverstein also noted that EPA 

Region 8 was looking at Colorado as being one of the last ofthe western states to comply now 

because of the BART rework that had occurred; Colorado was originally one of the first to 

complete the SIP. Coons asked about the stakeholder process and if the Division was working 

with the same group of people and Silverstein responded that the Division was working with the 

same group of people as well as bringing in anyone that may have new interest. Wilson asked 

about the step change of nitrogen deposition in years 1993 and 1994 and what the dramatic 

contributions were. Silverstein commented that the Division would be able to provide this 

information regarding the increase for 1993/1994 for the nitrogen deposition in RMNP at the 

February meeting. Byerly asked that the Commission be made aware of the synergies between 

the programs and that if additional modeling was done, an evaluation of how accurate the model 

is be conducted. 

Commissioner Informational Items 

Commissioner Wilson discussed the Boulder Clean Air Challenge that he was involved in over 

the summer noting that results reflected reduced vehicle miles by 10,000 miles which amounted 

to a savings of 5600 gallons of gasoline and a reduction of 54 tons of carbon dioxide. Wilson 

noted that it was a great program. Commissioner Loewy commented on a new book titled "How 

the West Was Warmed" responding to climate change in the Rockies by Beth Conover who was 

the creator of the Denver Greenprint Program for the Mayor. Loewy noted that it was a 

collection of 42 essays from writers around the region on issues related to climate change and 

was a very informative piece of work. 

5 
Division Director's Report 

Tourangeau reviewed a number of issues: 

•	 Enforcement Evaluation Report published by EPA Inspector General: the need for 

improvement regarding oversight and policies for high priority violations ofthe Clean 

Air Act. Tourangeau noted that this means Colorado would need to work with EPA on 

the use of the Notice of Violations (NOV) and timelines associated with closures of the 

NOV's. 

•	 PM2.5 NAAQS designations: provided a handout that summarized the PM2.5 

designations for NAAQS and noted that Colorado was in attainment and EPA was in 

agreement with the attainment and the technical analysis. 

•	 NAAQS review schedule by EPA: provided a handout of the schedule and summary of 

the S02 NAAQS proposal which was new and expected to go final this coming summer. 

Tourangeau noted that the N02 standard was proposed between 80 and 100 ppb in which 

Colorado currently had two monitors that could reflect nonattainment if the standard gets 

set at 80 ppb. Tourangeau commented that the S02 standard was proposed between 50 

and 100 ppb in which Colorado would be in attainment. Tourangeau also noted that 

secondary standards could become significant drivers for the Commission. 

•	 New Mexico imposed more stringent standards than the federal sector specifically for the 

oil and gas programs in the San Juan area south of Durango and the ozone data recently 

reflected that it had dropped dramatically over a three-year average by about 4 ppb 

(between 71-75 ppb). 

•	 Vehicle Inspection, Readjustment Program, and High Emitter Program: provided 

handouts of the Executive Summary of the Office of the State Auditors 3-year audit and a 

Division report that had been submitted to the Transportation Legislative Review 

Committee. Roberts asked for the web link for the report. 

•	 EPA Order on Oil and Gas for the Frederick Natural Gas Compressor Station: Order 

served based upon petition from WildEarth Guardians to 32 states. EPA's Order notes 

that the Division must complete an aggregation analysis and supplement the record based 

on the analysis and either amend, modify or keep the permit intact. 

•	 NSR Tailoring Rule from EPA: this is a proposed rule that raises the applicability 

thresholds to 25,000 tons per year C02e for Title V and PSD and comments are due to 

EPA by December 28. The Division believes that approximately 143 stationary sources 

would be in exceedence based upon fuel-burning alone and EPA estimates there would 

be about 40 new sources; this doesn't include methane. 

Attorney General's Report 

Goad discussed with the Commission: 

•	 Kasel case filed in Denver District Court but no date had been set 

•	 Consent Decree filed in the US District Court in Northern California by WildEarth 

Guardians complaining that Lisa Jackson of EPA allegedly failed to perform a nondiscretionary duty to either approve a SIP or a FIP for several states including Colorado 

with regard to the 1997 NAAQS for 8-hour ozone and PM2.5. 

6 
Administrator's Report 

Lempke reviewed the agenda items for the December meeting. Lempke also reviewed with the 

Commission the Action Items Follow-Up list noting that Gordon Pierce had provided input 

requested by Commissioner Byerly regarding NOx monitoring sites around the state. 

ACTION ITEMS 

Lempke reviewed the current actions from today's meeting: 

•	 DRCOG confonnity/van pool infonnation 

•	 Discuss role of APCD with regard to the overall Smoke Management Program 

•	 Provide 1M Audit Report web link to Commission 

•	 Send RAQC Executive Order to Commission 

•	 Response to Doug Lawson regarding fonning a committee to investigate NOx as a 

contributor to ozone pollution 

•	 Explain the step increase for 93/94 nitrogen deposition at RMNP 

Adjourn at 5:10 

7
 
Legal Opinion ofthe Colorado State Attorney General
 

40 CFR Part 51 Appendix V 2.1(c) and (e)
 
AGOpinion Page 1 of 1. 

JOHN W. SUTHERS STATE SERVICES Attorney General STATE OF COLORADO 

DEPARTMENT OF LAW BUILDING

CYNTHIA H. COFFMAN 1525 Shennan Street - 7th Floor 

Chief Deputy Attorney General OFFICE OF THE ATTORNEY Denver, Colorado 80203 DANIEL D. DOMENICO GENERAL Phone (303) 866-4500 Solicitor General 

Fax (303) 866-5691 

Tracking Number: 2009-00773 

OPINION OF THE ATTORNEY GENERAL RENDERED IN
 

CONNECTION WITH THE RULES ADOPTED BY THE
 

Air Quality Control Commission
 

ON 11/19/2009
 

5 CCR 1001-14
 

AMBIENT AIR QUALITY STANDARDS
 

The above-referenced rules were submitted to thiS office on 11120/2009 as required by section 24-4-103, C.R.S. This 

office has reviewed them and fmds no apparent constitutional or legal deficiency in their fonn or substance. 

November 23, 2009 03:10:04 MST
 

I..
 

JOHN W. SUTHERS 

Attorney General 

by DANIEL D. DOMENICO 

Solicitor General 

lttp://www.sos.state.co.us/CCR/Opinion.do?forview=true&trackingNurn=2009-00773 11/30/2009
Regulation or Regulation Revisions as Published in the
 

Colorado Code of Regulations
 

40 CFRPart 51 Appendix V 2.1(b)
 
DEPARTMENT OF PUBLIC
 

HEALTH AND ENVIRONMENT
 

AIR QUALITY CONTROL COMMISSION 

AMBIENT AIR QUALITY STANDARDS 

5 CCR 1001-14 

EDITOR'S NOTES* 

Authority Cited: 

Sections 25-7-105(1), 25-7-106(1), (2.5) and (4) C.R.S. 

Section 25-7-302 regarding SIP contents and 25-7-109(2)( ) regarding authonty to regulate carbon monoxIde 

(CO) 

History and Amendments: 

Amended 9/11/77,1 CR 1. Added 5/25/78, 1 CR 6. Amended 12/14/78,2 CR 1. Amended 4/12/79,2 CR 5. 

Redisignated 8/23/79, 2 CR 9. Adopted 12/20/79, effective 1/30/80,3 CR 1. Amended 3/27/80, effective per 

approval by the General Assembly, 3 CR 5. Adopted 3/10/83, effective 4/30/83,6 CR 4. Adopted 10/17/83, 

effective 11/30/83,6 CR 11. Repealed 7/20/89, effective 8/30/89, 12 CR 8. Adopted 12/21/89, effective 1/1/93, 

13 CR 2. Adopted as emergency regulation 2/21/91, effective 2/21/91, 14 CR 4. Adopted as emergency 

regulation 5/16/91, effective 5/16/91,14 CR 6. ~dopted 6/20/91, effective 7/30/91,14 CR 7. Adopted 6/16/92, 

effective 7/30/92; Visibility Standard adopted 8/20/91, effective 1/1/93,15 CR 7. Visibility Standard effective 

date postponed on an emergency basis 12/17/92, postponement effective 12/17/92; Visibility Standard effective 

1/1/95,16 CR 1. Adopted 3/18/93, effective 1/1/95, 16 CR 4. Adopted 6/24/93, effective 8/30/93,16 CR 8. 

Adopted 9/22/94, effective 11/30/94, 17 CR 11. Adopted 2!l6/95, effective 4/30/95, 18 CR 4. Adopted 

6/15/95, effective 8/30/85, 18 CR 8. Adopted 3/21/96, EFFECTIVE 5/30/96,19 CR 5. 

A.G. Opinions:
 

1 AG 241; 2 AG 15; 2 AG 113; 2 AG 225; 3 AG 19; 3 AG 122; 6 AG 110-111; 8 AG 328; 13 AG 53; 14 AG
 

118; 14 AG 193; 14 AG 225; 15 AG 256; 16 AG 23; 16 AG 114; 16 AG 278; 17 AG 423; 18 AG 148; 18 AG
 

286; 19 AG 130; 19 AG 338; 19 AG 389;
 

Annotations:
 

Rule 16(c)(3)(b) and 10(c)(3)(c) was not extended by Senate Bi1l92-132 and therefore expired June 1, 1992.
 

*Thls Title Page does not constitute an offiCial part of any regulation. Infonnatlon contained on the Title Page IS provided by the Publisher 

from sources deemed reliable and IS solely for mfonnational and hlstoncal pUlposes. See cautIOnary note In Introductory Matenals, How to 

Use theCCR. 

© 2008 State ofColorado 

All RIghts Reserved. (800) 833-9844 
EDITOR'S NOTES (continued) 

Reeulation Histon' 

Amended:
 

Amended:
 

Amended:
 

Amended:
 

Redesignated:
 

Adopted:
 

Effective:
 

Amended:
 

Adopted:
 

Effective:
 

Adopted:
 

Effective:
 

Repealed:
 

Effective:
 

Adopted:
 

Effective:
 

Adopted:
 

Effective:
 

Adopted:
 

Effective:
 

Adopted:
 

Effective:
 

Adopted:
 

Effective:
 

Visibility Adopted:
 

Effective:
 

Visibility Postponed:
 

Effective:
 

Visibility Effective:
 

Adopted:
 

Effective:
 

Adopted:
 

Effective:
 

Adopted:
 

Effective:
 

Adopted
 

Effective:
 

Adopted:
 

9/1/77 

5i2517S 

12114178 

4/12179 

8/23/79 

12120179 

1/30/80 

3/27/80 

3/10/83 

4130/83 

10/17/83 

11/30/83 

7120/89 

8130/89 

12/21/89 

1/1193 

2121191 

2/21191 

5/16/91 

5116191 

6120191 

7/30/91 

6/18192 

7/30/92 

6120/91 

1/1193 

12/17/92 

12/17/92 

1/1/95 

3/18193 

1/1/95 

6124/93 

8/30/93 

9/22/94 

11/30/94 

2/16/95 

4/30/95 

6115/95 

Effective: 

Adopted: 

Effective: 

Adopted: 

Effective: 

Adopted: 

Effective: 

Adopted: 

Effective: 

Adopted: 

Effective: 

Revised: 

Effective: 

Revised: 

Effective: 

Revised: 

Effective: 

Revised: 

Effective: 

Revised: 

Effective: 

Revised: 

Effective: 

Revised: 

Effective: 

Revised: 

Effective: 

Revised: 

Effective: 

RevIsed: 

Effective: 

Revised: 

Effective: 

Revised: 

Effective: 

8/30/95 

3/21/95 

5/30/96 

9119196 

11/30196 

10117196 

12/30/96 

12/18/98 

3/2198 

1115198 

3/30/98 

9/17/98 

11/30/98 

1110/00 

3/liOO 

2/17/00 

4130/00 

1111101 

3/31101 

311610L 

513010L 

4119/01 

6130101 

11/15/01 

12/30101 

7118102 

9130/02 

12/19/02 . 

03/02103 

06/19/03 

08130103 

12118103 

02102104 

03112104 

05/31104 

5 CCR 1001-14 Page 2 
EDITOR'S NOTES (continued) 

History and Amendments:
 

Adopted 9/19/96, EFFECTIVE 11/30/96, 19 CR 11. Adopted 10/17/96, EFFECTNE 12/30/98, 19 CR 12.
 

Adopted 12/18/98, EFFECTNE 3/2/98, 21 CR 2. Adopted 1/15/98, EFFECTIVE 3/30/98, 21 CR 3. Adopted
 

9/17/98, EFFECTIVE 11/30/98, 21 CR 11. Adopted 1/10/00, EFFECTIVE 3/1/00, 23 CR 2. Adopted
 

2/17/00, EFFECTIVE 4/30/00,23 CR 4. Adopted 3/16/00, EFFECTNE 5/30/00, 23 CR 5. Adopted 1/11/01,
 

EFFECTNE 3/2/01, 24 CR 2. Adopted 4/19/01, EFFECTNE 6/30/01, 24 CR 6. Adopted 11/15/01,
 

EFFECTNE 12/30/01,24 CR 12. Adopted 7/18/02, EFFECTIVE 9/30/02, 25 CR 9. Adopted 12/19/02,
 

EFFECTNE 03/02/03,26 CR 2. Sections V through VII Adopted 06/19/03, EFFECTNE 08/31/03, 26 CR
 

8. Parts V through VII Adopted 12/18/03, EFFECTNE 03/01/04, 27 CR 2. Parts m.F, m.M, vm.s adopted
 

03/12/04, EFFECTIVE 05/31/04, 27 CR 5. Parts m.E, m.M, Vm.Tadopted 12/16/04, EFFECTNE
 

03/02/05,28 CR 2. Pp. 20-21, 59-60 adopted 12/15/05. EFFECTNE 03/02/06, 29 CR 2. Rule replaced in its
 

entirety, adopted 11/20/08, EFFECTNE 12/30/08,31 CR 12. Rule replaced in its entirety, adopted 12/12/08,
 

EFFECTNE 01/30/09, 32 CR 1. Rules V.A, vm.x, vm.Y, adopted 11/19/09, EFFECTNE 12/30/09,32
 

CR12.
 

A.G. Opinions:
 

21 AG 48; 21 AG 86; 21 AG 353; 23 AG 44; 23 AG 99; 23 AG 116; 24 AG 60-60A; 24 AG 168; 24 AG
 

364; 25 AG 314; 26 AG 73; 26 AG 332; 27 AG 81; 27 AG 174; 28 AG 46; 29 AG 80; 31 AG Dec 1001-14;
 

32 AG Jan 1001-14; 32 AG Dec 1001-14 - lool-14a
 

Annotations: 

© 2009 State of Colorado Page 3 5 CCR 1001-14 

All Rights Reserved (800) 833-9844 
o 2009 State ofColorado 32 CR 12, 12-09 Page 21 

All Rights Reserved 

V.	 Emission Budgets for Attainment/Maintenance Areas in the State of Colorado 

V.A.	 Budgets 

V.A.1.	 The following Motor Vehicle Emission Budgets shall be utilized to assess the conformity of 

Transportation Plans, TIPs, and where appropriate, Projects, for the applicable penods and 

geographic areas indicated: 

Denver AttainmenUMaintenance 

Area (Modeling Domain) 

PM10: 2015 through 2021: 54 tons/day; 2022 and beyond: 55 

tons/day. 

Nitrogen Oxides: 2015 through 2021: 70 tons/day; 2022 and 

beyond: 56 tonS/day 

Trading provisions: Trading of PM10 for NOx, or NOx for PM10 

to adjust emission bUdgets for purposes of demonstrating transportation conformity shall be allowed using the emission trading 

formula as follows: 

For trades necessary to Increase a primary PM10 bUdget, 15.0 

tons/day of NOx will be taken from the NOx budget to increase 

the pnmary PM10 budget by 1.0 tons/day, a ration of 15 to 1. 

For trades necessary to increase a NOx budget, 1.0 tons/day of 

primary PM10 will be taken from the primary PM10 budget to 

increase the NOx bUdget by 12.0 tons/day, a ratio of 1 to 12. 

Implementation of trading provisions: In the event the MPO 

cannot demonstrate consistency with the specific PM10 and 

NOx mobile source emission budgets, the trading prOVisions 

may be utilized only after the MPO has considered all reasonably available local control measures to meet the budgets. The 

MPO must demonstrate the need for trading through the usual 

consultation procedures for state implementation plan deVelopment delineated in Section IV (F) of AQCC Regulation Number 

10, Criteria for Analysis of Conformity. 

If trading is utilized, the MPO shall include the folloWing information In the transportation conformity determination: 

(1) The budgetfor primary PM10 and NOx for each reqUired year of the conformity determination, before trading is 

employed; (2) The portion of the original bUdget to be used to 

supplement a wanting budget, for each required year for the 

conformity determination; (3) The Increased bUdget that results 

from trading, along with relevant calculations, and (4) the resulting primary PM10 and NOx budgets for each required year of 

the conformity demonstration. 

The MPO shall then compare projected emissions to the adjusted PM10 and NOx motor vehicle emission budgets to demonstrate conformity. 

CODE OF COLORADO REGULATIONS	 5 CCR 1001-14
 
Page 22 32 CR 12, 12-09 

Denver Attainment Maintenance Ozone Precursors (attainment/maintenance area boundary) 

Area NOx 2002 and beyond 134 tpsd VOC 2002 and beyond 119 

tpsd (tpsd = tons per summer day) Carbon Monoxide (attainment/maintenance area boundary) 2013 through 2020: 1625 

tons/day: 2021 and beyond: 1600 tons/day. 

Denver Metro Area/North Front Regional Emissions Budgets 

NOx: 122.9 tons/day 

VOCs: 109.2 tons/day 

Southern Sul:rReglonal Emissions Budgets 

NOx: 102.4 tons/day 

VOCs: 89.7 tons/day 

Northern SUI:rRegional Emissions Budgets 

NOx: 20.5 tons/day 

VOCs: 19.5 tons/day 

Range 8-Hour Ozone Nonattainment Area 

Aspen (Modeling Area) PM102015 and Beyond: 16,244lbs.lday 

Calion City PM102020 and Beyond: 1,6131bs.lday 

Lamar (Modeling Area) PM102015 and Beyond: 7,534lbs.lday 

Pagosa Springs (Modeling Area) PM1 0 2021 and Beyond: 946 Ibs.lday 

Steamboat Springs (Modeling 

Area) 

PM102015 and Beyond: 21,773Ibs.lday 

PM102021 and Beyond: 1,108lbs.lday 

Carbon MonOXide 2010 through 2014: 43 tons/day 2015-2019: 

43 tons/day 2020 and Beyond: 43 tons/day 

Carbon Monoxide 2010 and Beyond: 531 tons/day 

Carbon Monoxide 2005 through 2009: 99 tonS/day2010 through 

2014: 98 tonS/day2015 and Beyond: 94 tons/day 

Carbon MonOXide 2005 through 2009: 63 tonS/day2010 through 

2014: 62 tonS/day2015 and Beyond: 60 tons/day 

Telluride (Modeling Area) 

Longmont AttainmentlMaintenance Area 

Colorado Spnngs AttainmentlMaintenance Area 

Ft. Collins AttainmentlMaintenance Area 

Greeley Area Attainment/Maintenance Area 

5 CCR 1001-14 CODE OF COLORADO REGULATIONS
 
© 2009 State of Colorado 32 CR 12, 12-09 Page 23 

All Rights Reserved 

V.A.2. 

V.A.3. 

V.A.4. 

Geographic Coverage 

Unless otherwise specified, the geographic coverage of each of the area Motor Vehicle 

Emissions Budgets shall be the nonattainment or attainment maintenance area as defined in 

the respective state implementation plans. 

t 

The Motor Vehicle Emissions Budget for PM10applies to total primary PM10 emiSSions, including emissions from tailpipe exhaust, unpaved roads (except for the Denver PM10 nonattalnment area), re-entrained road dust and street sand. It does not include precursor or secondary emissions, which, where appropriate, are covered under separate budgets. 

Effective Dates 

V.A.4.a.Denver Carbon Monoxide 

The 1,520 tons per day (2013 and beyond) carbon monoxide emission budget established In Section V.A.1. shall take effect as a matter of state law when such bUdget 

takes effect as a matter of federal law pursuant to 40 CFR Section 93.118. Until such 

time as the 1,520 tons per day budget takes effect pursuant to this section and 40 

CFR Section 93.118, the carbon monoxide emission budgets for the Denver CO attainmenUmaintenance area shall be 800 tons per day (2002 and beyond). 

V.A.4.b.Colorado Springs Carbon Monoxide 

The 531 tons per day carbon monoxide emiSSIon bUdget established in Section 

V.A.1. shall take effect as a matter of state law when such budget takes effect as a 

matter of federal law pursuant to 40 CFR Section 93.118. Until such time as the 531 

-tons per day budget takes effect pursuant to this section and 40 CFR Section 93.118, 

the carbon monoxide emission budget for the Colorado Springs CO attalnmenUmaintenance area shall be 270 tons per day (2001 and beyond). 

V.A.4.c. Reserved 

V.A.4.d. Reserved 

V.A.4.e.Aspen PM10 

The 16,244 pounds-per-day PM1 0 emission budget established in Section V.A.1. 

shall take effect as a matter of state law when such budget takes effect as a matter of 

federal law pursuant to 40 CFR Section 93.118. Until such time as the 16,244 

pounds-per-day budget takes effect pursuant to this section and 40 CFR Section 

93.118, the PM10 emission budget for the Aspen PM10 Nonattainment Area shall be 

13,974 pounds-per-day. 

V.A.4.f. Pagosa Springs PM10 

The 946 pounds-per-day PM10 emission budget established in Section V.A.1 shall 

take effect as a matter of state law when budget takes effect as a matter of federal 

law pursuant to 40 CFR Section 93.118. Until such time as the 946 pounds-per-day 

budget takes effect pursuant to this section and 40 CFR Section 93.118, the PM10 

emission budget for the Pagosa Springs PM10 attainmenUmalntenance area shall be 

7,486 pounds-per-day. 

CODE OF COLORADO REGULATIONS 5 CCR 1001-14
 
Page 24 32 CR 12, 12-09 

V.A.4.g.Calion City PM10 

The 1,613 pounds-per-day PM10 emission budget established in Section V.A.1. shall 

take effect as a matter of state law when such budget takes effect as a matter of federallaw pursuant to 40 CFR Section 93.118. Until such time as the 1,613 poundsper-day ~udget takes effect pursuant to this section and 40 CFR Section 93.118, the 

PM10 emission budget for the Calion City PM 10 attainment/maintenance area shall 

be 7,439 pounds-per-day. 

V.A.4.h.Lamar PM10 

The 7,534 pounds-per-day PM1 0 emission budget established in Section V.A.1. shall 

take effect as a matter of state law when such budget takes effect as a matter of federallaw pursuant to 40 CFR Section 93.118. Until such time as the 7,534 poundsper-day bUdget takes effect pursuant to this section and 40 CFR Section 93.118, the 

PM10 emission bUdget for the Lamar PM10 Nonattainment Area shall be 1,884 

pounds-per-day. 

V.A.4.i. Steamboat Springs PM1 0 

The 21,773 pounds-per-day PM10 emission budget established in Section V.A.1 

shall take effect as a matter of state law when such budget takes effect as a matter of 

federal law pursuant to 40 CFR Section 93.118. Until such time as the 21,773 

pounds-per-day budget takes effect pursuant to this section and 40 CFR Section 

93.118, the PM10 emission bUdget for the Steamboat Springs PM10 Nonattainment 

Area shall be 20,682 pounds-per-day. 

V.A.4.j. Telluride PM10 

The 1,108 pounds-per-day PM10 emission budget established in Section V.a.1. shall 

take effect as a matter of state law when such budget takes effect as a matter of federallaw pursuant to 40 CFR Section 93.118. Until such time as the 1,108 poundsper-day bUdget takes effect pursuant to this section and 40 CFR Section 93.118, the 

PM10 emission budget for the Tellunde PM10 Attainment Area shall be 10,001 

pounds-per-day (2012 and beyond). 

V.B. Reserved 

V.C. Additional ReqUirements for the Denver PM10 Attainment/Maintenance Area 

V.C.1. Geographic Coverage 

The geographic coverage for the Denver PM10 Motor Vehicle Emissions Budget is the modeling domain contained in the most recent revision to the Denver PM10 state implementation 

plan and technical support documentation, which are available for inspection at the offices of 

the AQCC located at 4300 Cherry Creek Dnve South, Denver, Colorado. 

V.C.2. Regional Emissions AnalySIS 

The emIssions bUdgets set out In this section shall be used for regional emissions analyses 

requIred for conformity determinations. 

5 CCR 1001-14 CODE OF COLORADO REGULATIONS
 
o 2009 State ofCoIOl1lcJo. 32 CR 12, 12-09 Page 24.1 

All Rights Reserved 

V.D. Additlonal.Requirements for the Denver CO Attainment/Maintenance Area 

V.D.1. Geographic COvefag~

The'geographrc;coverage for the Denver CO Motor Vehicle Emissions Budget is the Denver 

CO attainment/malrltenance area as defined In the section of thIS Ambient Air Standards 

regulationentitled-"Descnption of Boundaries for Denver CO Attalnment/Maintenance Area." 

VI. Carbon, MonoxldetStandard within the Eisenhower Tunnel" 

Pursuant to tlle-authorityrot'Section25-7-106 (1), (b) and (c) and of 25-7-107 (1), (a), and (b) of Colorado Revised:Statute9t19i~3ftheColorado Air Pollution Control Commission designated and confines 

of any travelectportionS!o~ttletroadways within the Eisenhower Tunnel as a control area In which the 

adoption andmalntenanE:eofarramblent air standard is deemed necessary with particular identification of"carbon:monoxidetaSltlTepollutant hereby made subject to the following standard to maintain 

an acceptable;huma~camoxyhemoglobin level: THE AMBIENT AIR WITHIN THE EISENHOVVER 

TUNNEL SHAlLBcMAINi'fAINED SO THAT THE LEVELS OF CARBON MONOXIDE SHALL NOT 

EXCEED A 15~MINl:JTe'AVERAGDOF 100 PARTS PER MILLION VOLUME (115 MILLIGRAMS 

PER CUBIC M~ER'-A¥760HORR'AND25N CENTIGRADE) CONCENTRATION. 

* Carbon MonoxideJEiseon-oweeTunnel: Adopted: 9/5/75 Effective: 12/17/75 

CODE Oli COP'ORAJ)0tREGULATIONS 5 CCR 1001-14 
Page 24.2 3~ CR 12, 12·09 

This page intentionally left blank. 

5 CCR 1001-14 CODE OF COLORADO REGULATIONS
 
© 2009 State of Colorado 32 CR 12, 12-09 Page 51 

All Rights Reserved 

require, assignment of some or the entire safety margin to the transportation conformity budget. The 

reservation of a portion of the carbon monoxide safety margin allows for additional growth In other 

sectors, but does not make the Sip more stnngent than the federal requirements. 

The authority to establish emiSSions budgets IS Included In the general authority to adopt a state Implementation plan set out In Section 25-7-105(1), C.R.S. 

The mobile source emiSSions bUdgets are based on EPA-approved computer models, as required by 

federal regulations. All methodologies and Information made available by Interested parties have 

been considered. The rule allocates most of the margin of safety to mobile sources, but maintains a 

reasonable margin for accommodation of uncertainty and future growth m other sectors. The allocation of most of the safety margin to mobile sources provides flexibility for the transportation community In adopting thIs rule, the Commission chose the most cost-effective option. 

VIII.V Canon City PM10 

Adopted: November 20, 2008 

The amendments to the "Ambient Air Quality Standards for the State of Colorado" Regulation 

adopted by the Commission establish mobile source emISSions budgets for the Cation City area. 

Federal Requirements 

Nothing In this rule change exceeds the minimum reqUirements of the federal act. 

Statutory Authority 

The authority to establish emissions budgets and to establish critena for transportation conformity 

determinations is Included In the general authority to adopt a State Implementation Plan set out In
 

Section 25-7-105(1), C.R.S. (2001).
 

Findings pursuant to Section 25-7-110.8
 

The mobile source emiSSions budgets are based on EPA's MOBILE6 emissions model and EPA­


approved methods for calculating fugitive dust emissions as required by federal regulations. All meth­


odologies and mformation made available by Interested parties have been considered. The emiSSions
 

budgets reduce the potential for air pollution by capping emiSSIons from mobile sources. In adopting
 

this rule, the Commission chose the most cost-effective alternative.
 

Further, these reVISions include any typographical, grammatical and formatting errors throughout the 

regulation. 

VIII.W Denver Metro Area/North Front Range 8-Hour Ozone Emissions Budgets
 

Adopted December 11, 2008
 

The amendments to the "Ambient Air Quality Standards for the State of Colorado" Regulation
 

adopted by the Commission establish mobile source emISSions budgets for the Denver Metro
 

Area/North Front Range 8-Hour Ozone area.
 

Federal Requirements
 

Nothing In this rule change exceeds the minimum requirements of the federal act.
 

CODE OF COLORADO REGULATIONS 5 CCR 1001-14
 
Page 52 32 CR 12, 12-09 

Statutory Authority 

The authority to establish emiSSions budgets and to establish critena for transportation conformity 

determinations IS Included In the general authority to adopt a State Implementation Plan set out In 

Section 25-7-105(1) and In 25-7-107(1), C.R.S. 

Findings pursuant to Section 25-7-110.8 

The mobile source emissions budgets are based on EPA's MOBILE6 emissions model and EPAapproved methods for calculating fugitive dust emiSSions as requIred by federal regulations. All methodologies and information made available by Interested parties have been consIdered. The emissions 

budgets reduce the potential for air pollution by capping emiSSions from mobile sources. In adopting 

this rule, the Commission chose the most cost-effective alterl'lative. 

VIII.X Pagosa Springs PM10 

Adopted November 19, 2009 

The amendments to the "Ambient Air Quality Standards for the State of Colorado" Regulation 

adopted by the Commission establish mobile source emiSSions budgets for the Pagosa Springs 

PM10 attainment area. 

Federal Requirements 

Nothing In thIs rule change exceeds the minimum requirements of the federal act. 

Statutory Authority 

The authority to establish emiSSions budgets and to establish critena for transportation conformity 

determinations IS Included In the general authority to adopt a State Implementation Plan set out In 

Section 25-7-105(1), C.R.S. (2001). 

Findings pursuant to Section 25-7-110.8 

The mobile source emiSSions bUdgets are based on EPA's MOBILE6 emiSSions model-and EPA~ approved methods for calculating fugitive dust emissions as required by federal regulations. All methodologies and information made available by interested parties have been considered. The emissions 

budgets reduce the potential for aIr pollution by capping emissions from mobile sources. In adopting 

this rule, the CommIssion chose the most cost-effective alternative. 

Further, these reVISions will include any typographical, grammatical and formatting errors throughout 

the regulation. 

VIII.Y Telluride PM10
 

Adopted November 19, 2009
 

The amendments to the "Ambient Air Quality Standards for the State of Colorado" Regulation
 

adopted by the Commission establish mobile source emiSSions budgets for the Telluride PM10 at­


tainment area.
 

Federal Requirements
 

Nothing In thIs rule change exceeds the minimum requirements of the federal act.
 

5 CCR 1001-14 CODE OF COLORADO REGULATIONS
 
o 2009 State of Colorado 32 CR 12, 12-09 Page 53 

All Rights Reserved 

Statutory Authority 

The authority to establish emissions budgets and to establish criteria for transportation conformity 

determinations is Included in the general authority to adopt a State Implementation Plan set out In 

Section 25-7-105(1), C.R.S. (2001). 

Findings pursuantto Section 25-7-110.8 

The mobile source emissions budgets are based on EPA's MOBILE6 emISSions model and EPAapproved methods for calculating fugitive dust emissions as required by federal regulations. All methodologies and information made available by interested parties have been considered. The emissions 

budgets reduce the potential for air pollution by capping emiSSions from mobile sources. In adopting 

this rule, the Commission chose the most cost-effective alternative. 

Further, these revisions will include any typographical, grammatical and formatting errors throughout 

the regulation. 

CODE OF COLORADO REGULATIONS 5 CCR 1001-14