# I'"

MontanaDepartmentof ' 

# ENVIRONMENTALQUAUTY 

# B-- P

Brian Schweitzer, Governor Richard H. Opper, Director

P.O. Box 200901 • Helena, MT 59620-0901 • (406) 444-2544 • www.deq.mt.gov July 13, 2011

James B. Martin Regional Administrator United States Environmental Protection Agency Region VIII, 8P-AR 1595 Wynkoop St. Denver, CO 80202-1129

Re: Montana Carbon Monoxide Limited Maintena.nce Plan Revisions and Alternative Monitoring Strategy

Dear Mr. Martin:

Montana is submitting revisions to the State Implementation Plan. This submission contains the updated second 1O-year term Great Falls and Billings carbon monoxide (CO) Limited Maintenance Plans (LMP) as required by 42 USC 7505(a). This submission also fulfills the criteria set forth in 40 CFR Part 51, Appendix V.

In addition, Montana is proposing changesto the monitoring strategy currently deployed underthe SUbject LMPs. As you are aware, ambient levels ofCO in Montana and nationwide have decreased precipitously, mostly dueto federal tailpipe standards and vehicle fleet turnover. Accordingly, the amount ofstate and local resources necessaryto continually confirm trace levels ofCO no longerjustifiesthe exhaustive and resource intensive use ofgaseous CO analyzers for such purposes.
Montana is interested in ensuring thatthe affected LMP areas maintain compliance with the national ambient air quality standards despite decreasing federal grant support. To that end, Montana developed and proposes to use an alternative CO monitoring methodologydescribed in the enclosure titled "State of Montana Alternative CO Monitoring Strategy." Montana intends to deploythis revised CO monitoring strategy as ofOctober 1, 2011.

Ifyou have any questions regarding this action, please contactthe Department'sAir Quality Policy and Planning supervisor, M. Eric Merchant, by telephone at (406) 444-1457 or by email at emerchant@mt.gov. Sincerely,

## ~-:::_~~?**~--** 

# ./'}//**//~'~~//' C-/~_..J**  .r Richard H. Opper Director

Enclosure c: Dave Klemp, Chief, Air Resources Management Bureau M. Eric Merchant, Air Resources Management Bureau RECEIVED c/enc: Brian Schweitzer, Governor U.S. EPA Region 8 RA's Offico 

## ,JUL 20 

## 2011

Enforcement Division • Permitting & Compliance Division • Planning, Prevention & Assistance Division • Remediation Division

# . State of Montana Alternative CO Monitoring Strategy
Surrogate

# co Monitoring Method

Montana proposes revisions to the existing carbon monoxide (CO) Limited Maintenance Plans (LMPs) to adopt reproducible CO monitoring methodswhich do not utilize a traditional gaseous analyzerfordetermining CO NAAQS compliance in the CO maintenance areas of Billings, Great Falls and Missoula. The surrogate CO monitoring method will include an annual. review ofthe trafficvolumes in each ofthe CO maintenance areas using the data from the Montana Departmentof**Transportation~s** (MDT) permanentautomatictraffic recorders (ATR) in Billings, Great Falls, and Missoula.

The Montana DepartmentofEnvironmental Quality (Department) will comparethe latest rolling 3-year monthly average of the averagedaily traffic (ADT) volumes during the traditional high CO concentratiot:1 season of Novemberthrough February againstthe baselineADT average forthose months established by the ATR data collected during 2008-2010. Contingency Plan

IftheADT increases by greaterthan 25% when comparing the most recent, consecutive rolling 3-year period tothe baseline2008-2010 period, then the Departmentwill conducta CO saturation study using portable, non-reference samplers to determinethe actual CO levels in the ambient air nearthe formerambientair monitoring site. The CO screening study will be conducted the following winter during the Novemberto February period and the results evaluated to determine iftraditional CO monitoring with a gaseous analyzershould resume in the subjectcommunity.

Ifthe percent increase is notgreaterthan 25%, then the ambient CO concentrations will be presumed to have remained relatively unchanged.

Annual ADT comparison Analysis

The baseline trafficvolume levels for Billings, Great Falls and Missoula were established using the following data sets: Rolling 2008-2010 Average Monthly ATR Traffic Volume During Novemberto February Month-Year Billings (#A-050) Great Falls (#A-033) Missoula (#A-037) January 2008 32,778 34,123 19413 February 2008 35463 36855 20568 November2008 35,832 35675 20,366 December2008 32042 33,584 19,030

January 2009 33,256 33820 18,005 February 2009 35695 36102 no data November2009 37,121 37110 20,242 December2009 33,905 34,742 19,825

January2010 32,340 34,371 20155 February 2010 34317 36,576 21,056 November2010 33885 34,164 20,349 December2010 34,317 34,691 19,599 Average 34,246 35,151 19,873

The baselinetrafficvolumes for the 2008to 2010time period, by community, are as follows:

• Billings 34,246
• Great Falls 35,151
• Missoula 19,873

Forexample, in early 2012, using the ATR data from 2011, new rolling averageswill be calculated forthe 2009to 2011 time period for each community. That new rolling average for2009-2011 will becompared tothe baseline 2008-2010 average for each community. TheADT data review process will be repeated each yearduring the annual monitoring review and the new rolling 3-year average will be compared to the baseline average from 2008-2010.

# RECORD

State Implementation Plan Notice and Comment Process For Great Falls and Billings CO Limited Maintenance Plan

TABLE OF CONTENTS
(1) Public notice statement. (2) Proofof notice to Interested Parties & APCAC (list ofparties attached) (3) Notice as published on DEQ website (4) Public comments (5) Great Falls Carbon Monoxide Limited Maintenance Plan (6) Billings Carbon Monoxide Limited Maintenance Plan

Prepared 

### by: Date:

### PUBLIC NOTICE Great Falls and Billings Carbon Monoxide Limited Maintenance Plans 1) The Department of Environmental Quality is inviting public comment on the proposed submission of revisions to the Great Falls Carbon Monoxide Limited Maintenance Plan and the Billings Carbon Monoxide Limited Maintenance Plan into the Montana State Implementation Plan (SIP). 2) Any person may request public hearing on this matter. Ifthe Department receives a requestfor public hearing, a public hearing on this matterwill be scheduled and the time for that hearing will be announced and another 30 day time period for submitting commentwill begin. 5) Interested persons mayview the Plans on the Department's website at: http://deq.mt.gov/pubcom.mcpx or may call the Department at406-444-7916 to have copies made available for their inspection. 6) The State of Montana makes reasonable accommodations for any known disabilitythat may interfere with a person's ability to participate in state government proceedings. Persons needing accommodation must contact Oline Barta to advise ofthe nature ofthe accommodation needed. Please contact Ms. Barta at P.O. Box 200901, Helena, Montana 59620-0901; phone (406) 444-0524; fax (406) 444-1499; oremail "obarta@mt.gov."
7) Interested parties may submittheir comments concerning the proposal described above in writing to the Department by
• addressing them to Oline Barta, 1520 E. Sixth Avenue, P.O. Box 200901, Helena, Montana, 59620-0901 ; • faxing them to (406) 444-1499; or • sending them via email addressed to "obarta@mt.gov." To be guaranteed consideration, written comments must be postmarked on or before 5 p.m. May 23,2011.Brian Schweitzer, Governor

P.O. Box 200901 • Helena, MT 59620-0901 • (406) 444-2544 • www.deq.mLgov

DATE: April 20, 2011

TO: Air Interested Parties

FROM: Montana Department of Environmental Quality Air Resources Management Bureau

RE: Public Comment on SIP Submission

PUBLIC NOTICE Great Falls and Billings Carbon Monoxide Limited Maintenance Plans 1) The Department of Environmental Quality is inviting public comment on the proposed submission of revisions to the Great Falls Carbon Monoxide Limited Maintenance Plan and the Billings Carbon Monoxide Limited Maintenance Plan into the Montana State Implementation Plan (SIP). 2) Any person may request public hearing on this matter. Ifthe Department receives a request for public hearing, a public hearing on this matterwill be scheduled and the time for that hearing will be announced and another 30 day time period for submitting comment will begin. 5) Interested persons may view the Plans on the Department'swebsite at: http://deq.mt.gov/pubcom.mcpx or may call the Department at 406-444-7916 to have copies made available fortheir inspection. 6) The State of Montana makes reasonable accommodationsfor any known disability that may interfere with a person's ability to participate in state government proceedings. Persons needing accommodation must contact Oline Barta to advise ofthe nature ofthe accommodation needed. Please contact Ms. Barta at P.O. Box 200901, Helena, Montana 59620-0901; phone (406) 444-0524; fax (406) 444-1499; or email "obarta@mt.gov." 7) Interested parties may submit their comments concerning the proposal described above in writing to the Department by
• addressing them to Oline Barta, 1520 E. Sixth Avenue, P.O. Box 200901, Helena, Montana, 59620-0901;
• faxing them to (406) 444-1499; or • sending them via email addressed to "obarta@mt.gov." To be guaranteed consideration, written comments must be postmarked on or before 5 p.m. May 23, 2011.

EnforcementDivision • Pe-rrnitting**L~** Compliance Division •**Plannin~,** Prevention & Assistance Divhion • Remediation DivisionAir Interested Parties Mailing

EmailAddr_ 2horses@nemontel.net Sfriendlyfish@bresnan.net Abbie.Krebsbach@mdu.com aclark27@bloomberg.net adam.poll@tetratech.com aday@trinityconsultants.com afanderson@fs.fed.us ahedges@meic.org alexanderrr@cdm.com allen@allen-associatesmt.com andrea.perez@hexion.com apack@aI14inc.com astecpermits@gmail.com aussie_northcott@hotmail.com azzie_301@hotmail.com bayxie@aol.com bdhohn@hohneng.com bdundas@truecos.com beamman60S6@msn.com benjamin.recker@tetratech.com berrysoup@yahoo.com beth_dickerson@fws.gov bettylu@blackfoot.net bhabeck@mt.gov bholland@crowleylaw.com bjohnson@summite.com blaise.leblanc@hotmail.com blakecrk@gmail.com bml@stateside.com bmontgomery@montana-wcc.com bob.vantuyl@ashgrove.com boschleicher@mt.gov bret@bison-eng.com brett@bison-eng.com brian.mchugh@tetratech.com brian.zieske@malmstrom.af.mil brianna@clarkfork.org brogers@newfield.com Bruce.Krepley@naes.com bschmidt@co.missoula.mt.us bsoamj@3rivers.net BSquires@nicnd.com Bstevenson@rosipower.com bsublasky@emsl.com 20-Apr-ll

FuliName_ Debbie Madison Jack & Pamela Emard Abbie Krebsbach Aaron Clark Adam Poll Aaron Day Anna Anderson Anne Hedges Bob Alexander Don Allen Andrea Amy Pack Catherine robert k eddy Brian Hohn Bob Dundas Anderson Ben Recker bonita beth dickerson Jim Young Bob Habeck B. Holland Bruce Johnson

Krista Evans Becky Lukaesko Bob Montgomery Bob Vantuyl Bob Schleicher Bret Gallo Brett Gallo Brian McHugh Brian Zieske Brianna Randall Brad Rogers Bruce Krepley Ben Schmidt MaryJane McGarity Bruce Squires Bruce Stevenson YELP benbullorj@bp.com burns.betsy@epa.gov bvaughn@montana.com c2nites2000@yahoo.com calvin.e.kidney@wellsfargo.com carl@compliancefreaks.com
cartoonsmart@mac.com cash 1230@esaphaseone.com cathyl@bkbh.com cboe@mt.gov cefarms@tetonwireless.net cflanders@nobleenergyinc.com chaIbert@landauinc.com chenine.wozniak@ch2m.com cheryllynned@marathonoil.com chomer@mt.gov chuck.buus@riotinto.com chuck@netentrust.com chuckp@cskt.org cindy_buschman@mccormick.com cindymed@hotmail.com claseur@plainsjustice.org cmhd@midrivers.com cmrcd@midrivers.com coate.carson@epa.gov colburnm@ho.missoula.mt.us coolnickjr@hotmail.com coupscounter@yahoo.com cpowell@buysandassociates.com cpowell@ltenv.com cranecreationsl@yahoo.com crose@3rivers.net crwindmueller@wtrconsulting.com dan.corti@mso.umt.edu darrell.soyars@avistacorp.com daveduttonfraser@yahoo.com davew@kirkwoodcompanies.com davidJong@eogresources.com dblank@ncpa.org dbusby@montanarefining.com dcowan@mt.gov dcquickdraw@gmail.com debbies_design@yahoo.com detroit03mm@yahoo.com dhart@c1eanair.com dhrubes@midrivers.com diannalin@msn.com Robin Bullock Betsy Burns Barbara Vaughn KermitSnow Calvin Kidney Carl Williams Buddy Rogers John Meyers Cathy Laughner Chris Boe Chad Dohney Catherine Flanders Chip Halbert Chenine Wozniak Cheryl-Lynne Davis -Marathon Oil Charles Homer Charles D. Buus chuck Chuck Page Cindy Buschman Cindy Carrie La Seur Mike Rinaldi Monty L. Sealey Carson Coate Mamie Colburn randy lahey David saylor Chad Powell Chad Powell Julia Crane Corrine Rose C. Ray Windmueller Dan Corti Darrell Soyars dave Dave David Long Danielle Blank Dexter Busby Devin Cowan Devin Cowan Debra Vetter Mike Dean Hart David Hrubes Dianna Lintnerdjohnsonhorne@barrick.com dlambrecht@jbrenv.com dlorenzen@pioneer-technical.com dmunson@mt.gov dmyran@montana-wcc.com dolan.kathy@epa.gov donald.may@tetratech.com dpaulsen@ala-nr.org dpavuk@crowleylaw.com dpowers@summite.com drusoff@mt.gov dshonerd@multistate.com dsimonson@mt.gov dsimpson@montana-wcc.com dsoehren@bresnan.net dsorensen@bozeman.net dugiejm@hotmail.com dujohnson@mt.gov dvanhyningl@msn.com dwalsh@mt.gov dwatson@rosebudcountymt.com dwolfe@mt.gov ed@mt.net edmadler@hotmail.com edward.hookl@montana.edu eemc@bresnan.net eisele.adam@epa.gov elbrunner@gmail.com emcrae@fageninc.com emerchant@mt.gov emilieboyles@yahoo.com eric.detmer@c1dpk.com esa@platts.com fcrowley@doneylaw.com fotto@ups.com frank@shumaker.psemail.com gabe.johnson@riotinto.com gaila_consulting@msn.com gcm@sierraresearch.com geraldschlosser@benefis.org gjackson@emittechnologies.com gjg@ecocion.com gmcgann@co.carbon.mt.us Greg.brown@chsinc.com greg.hildebrand@ttemi.com grey_nicolls@hotmail.com grodway@bison-eng.com Deborah Johnson-Horne David Lambrecht Diane Lorenzen Darren Munson Darrel Myran

Don May Dick Paulsen D. Pavuk Dan Powers Dave Rusoff David Shonerd Dave Simonson Dave Simpson Doug Soehren Dewey Sorensen Jeff Dusti DyrckVan Hyning Dan Walsh Daniel D. Watson Deb Wolfe Ed Santos Edward Madler

- APCAC ej hook Dave Wang Adam Eisele Erica Brunner Edward McRae Eric Merchant emilie boyles Eric Detmer Esa Frank Crowley Friedheim Otto frank Gabe Johnson Gail Abercrombie Gabe McAuliffe Gerald Schlosser GaryJackson Gary Gates Gregory McGann Greg Brown Greg Hildebrand robert Grant Rodwayhbedbury@montanarefining.com hestmark.martin@epa.gov hhsgreengroup@gmail.com hkaiser@hydrometrics.com hpeterson@mtech.edu hrash@mt.gov hrobbins@bison-eng.com info@kakuk.com info@lion.com info@northernplains.org j.castro@ci.burbank.ca.us JacfKie.Flikkema@Kniferiver.com jackross@nemontel.net jade.stokke@riotinto.com Hadley Bedbury Martin Hestmark HHS Green Group Heidi Kaiser Holly Peterson Hoby Rash Hal Robbins Michael Kakuk Lion Technologies Northern Plains Resource Council Jessica Jackie Flikkema Jack Ross Jade Stokke Jagadeesan.Sethuraman@whiting.corJagadeesan Sethuraman jahughes@mt.gov jajehn@marathonoil.com jake.weirich@edaw.com jakenny@mt.gov jamie.christopher@aecom.com jamie.gaboriau@riotinto.com jamiew@slservices.net JasMatthews@msn.com javid@mod2.com jcarlin@mt.gov jcarlson@co.missoula.mt.us jchaffee@bison-eng.com jcoefield@mt.gov jdorris@mt.gov jean.semborski@conocophillips.com jeannehallesy@yahoo.com jeff.briggs@ashgrove.com jeff@ajaxcomputernetworking.com Jenna_k_02@hotmail.com jennifer.cinq-mars@ang.af.mil jennifer.pin@riverstonehealth.org jennifergoldman@ogap.org jenomara@mt.gov jfdowns@babcock.com jford2@mt.gov Jiakun.lhang@stjude.org jilesejibri/@yahoo.com jillgrenon@yahoo.com jjones@bwenergylaw.com jli@mt.gov jmariepatrick@3rivers.net JMBlanco@marathonoil.com Jim Hughes JohnJehn Jake Weiriich Jake Kenny Jamie Christopher jamie gaboriau Jamie Whiteman James Matthews, M.D. Javid Nia Jim Carlin Jim Carlson JeffChaffee John Coefield Joshua Dorris Jean Semborski Jeanne Jeff Briggs Jeff Jenna Loring Jen Jennifer Pinnow Jennifer Goldman Jenny Q'Mara John Downs McCloud (Joe) Ford Jiakun Zhang Jilese jill grenon juliajones Janet Li June Patrick Julius Blancojmerkel@mt.gov jmparker@pplweb.com Joe@shumaker.psemail.com JOELKelm@msn.com John@SenatorJohn.net johnJei@ibew.org jon.madison@mdu.com jonnysanty@gmail.com joseph.w.lierow@exxonmobil.com josephfdepaz@yahoo.com jrussell@f1athead.mt.gov jscott@cherrycreekradio.com jsites@crowleylaw.com jugorowski@mt.gov Kalle.Kuether@mdu.com karen@netentrust.com katrina_winborn@urscorp.com kdavid@flathead.mt.gov kenre@comcast.net Kevin.Pilger@taqa.ca kgehret@perkinscoie.com kgessaman@mt.gov khooper@libby.org**kirsty~ilmour@hotmail.com** kmoore@co.lewis-c1ark.mt.us korr@mt.gov krandall@fvcc.edu krobertson@mjbradley.com Julie Merkel Jim Parker Joe Aline Joel Kelm John Brueggman John Lei

- APCAC Jon madison Jonny Santy Joe Lierow Joseph F. de Paz Joe Russell Jay Scott J. Sites Joe Ugorowski Kalle Kuether karen Katrina Winborn Kelly David Kenneth Reeves Kevin Pilger Kate Gehret Kathy Gessaman Kathy Hooper Kirsty Gilmour Kathy Moore Katherine Orr Katie Randall KRobertson ksolberg@anacondadeerlodge.mt.go\ Karen Solberg kwalsh@enviroconsult.com kwebb@m-m.net larry@montanasulphur.com Iclark@fs.fed.us leah.bennett@rocketmail.com lee@prrlaw.com lepodal@yahoo.com LGlatz@mt.gov Ihendley@co.lewis-c1ark.mt.us library@crowleylaw.com Iindsay.spurlock@riotinto.com lisasandoval@contres.com ljordan@rc.mt.gov Ikambham@trinityconsultants.com lIaknar@co.beaverhead.mt.us lIoken@wpcnd.com Imoody@all-llc.com Imoral@trinityconsultants.com Kevin Walsh Kristi Webb LarryZink Lori Clark Leah Bennett Lee Bruner Debbie Lepo Glatz, Linda LHendley Crowley Law Lindsay Spurlock Lisa Sandoval Lea Jordan Latha kambham Laknar Lance Loken Lee Moody Lani MoralInguyen@trinityconsultants.com lonnie.fallin@jacobs.com Istuder@stmaryland.com Iweeks@nemont.net Izanto@mt.gov macka_maka@hotmail.com marcellama@cskt.org Margaret.Zebley@aecom.com margaret@montanasulphur.com mark.lin@gmail.com mark@aspence.net markschaffer57@hotmail.com mary.ble/@chsinc.com mbarton@co.missoula.mt.us

mbasta@greatfallsmt.net mbayne@abraxaslusk.com mbrown@ap.org mcferrins@mt.net megan.siems@sierraclub.org mhillman@trinityconsultants.com

mhoffman@jeffco.mt.gov michelle@skyride.net mike.simpson2009@gmail.com miosh_com@yahoo.com MitcheII.Leu@plumcreek.com mlct@mt.net mmca@mttrucking.org montanabobcat@gmail.com mpa@montanapetroleum.org mpainter@ci.missoula.mt.us mpontiff@newfield.com mraile@montanarefining.com mrlambrecht@pplweb.com msimonich@helenahar.com mtaudubon@mtaudubon.org muncie1929@itstriangle.com mwignot@hydrometrics.com nathon@bison-eng.com Nick.Lawyer@montana.com nickgeranios4317@msn.com nturnbuI/2@gmail.com obarta@mt.gov parker-christensen.victoria@epa.gov Parkside@bigsky.net Pat.kimmet@chsinc.com pat@crowleyconsultants.com patels3@hotmail.com Linda Nguyen Lonnie Fallin luke Linda Weeks Lynn Zanto robert' Marcella Mahseelah MargaretZebley Margaret Mark MarkC. Peterson mark schaffer Mary Blel Michael Barton Martin Basta Marc Bayne Matt Brown Felecity McFerrins Megan Siems Melissa Hillman MichaelG. Hoffman II michelle Hartly Mike Simpson Ken Liston Mitchell Leu Alec Hansen Montana Motorcarriers Bob Dave Galt Michael L. Painter Mike Pontiff Mike Raile Mark Lambrecht MarkSimonich Montana Audubon Muncie Morger Michael Wignot Nathon Nick Lawyer Geranios Enterprises Inc Neil Turnbull Oline Barta Victoria Parker-Christensen JenniferSwearingen Pat Kimmet Pat Crowley patelpatty@johnsonlanematerials.com pauldsherrpc@yahoo.com pcollins@crowleylaw.com phippsangela@stanleygroup.com pjsimonich@pplweb.com pkukay@hotmail.com pmckenzie@stoltzelumber.com randall.j.richert@conocophillips.com rdaniel@rc.mt.gov rdriear@centurytel.net rebecca@bison-eng.com rebecca@northernplains.org redtail47@gmail.com reed.j.marton@conocophillips.com rfink@co.carbon.mt.us rgilson@cbmainc.com rhughes@rmsmanagement.com Rick.Walsh@Northwestern.com rjeffrey@mt.gov rkenyon@cgrs.com roark@imt.net ron.hyatte@riotinto.com ronald.nadwornick@mt.usda.gov ross.whelchel@northwestern.com rr@hayfam.com rsouthwick@gr-northern.com Runningelkcliff@aol.com russb@ycchd.org ruth.Jensen@transcanada.com RWeimer@stillwatermining.com sabrina_rojas@hotmail.com sabskb@gmail.com saraw@intermountain.org sbombard@natlforests.org sbrown@aquionix.com Shannon.morgan@rosi-boise.com shatten@mt.gov sherry.bursey@anadarko.com sjohnson@co.cascade.mt.us smason@hydrometrics.com smullins@industrialinfo.com

snowakowski@mt.gov sobrien@oasisemission.com solsen@mt.gov srubino@sc.rr.com ssternberg@mt.gov Stacy.aguirre@wbip.com Patty Paul P. Collins Angela Phipps Pete Simonich Paul Kukay Paul R. McKenzie Randall Richert Rod Daniel Ralph Driear Rebecca Rebecca Fischer Jo Ellis Reed J. Marton Rodney Fink Robert Gilson Rose Hughes Rick Walsh RobertJeffrey Randy Kenyon Carol Lee-Roark Ron Hyatte Ronald Nadwornick Ross Whelchel C.E.Robertson Rich Southwick Running Elk Russ Boschee Ruth Jensen Randy Weimer Sabrina Scott and Sheree Bombard
sara wakefield Sheree Bombard Sean Brown Owen Orndorff-YELP Skye Hatten Sherry Sandy Johnson Scott Mason Shane Mullins Sonja Nowakowski Shawna O'Brien Sandi Olsen srubino Stan Sternberg Stacy Aguirrestellaholt@live.com Stella stephentsmith@earthlink.net Stephen T. Smith stevew@bkbh.com Steve Wade susanalise@cox.net Susan sutherlin1971@earthlink.net Sandra Sutherlin swright@cfaluminum.com Steve Wright szehntner@mt.gov Steve Zehntner tadd.berger@erm.com Tadd Berger tdzomba@fs.fed.us Thomas Dzomba teverts@mt.gov Todd Everts thodik@centurypaving.com tiphlmiller@yahoo.com Tiphanie Keefe tjewett@NPCA.QRG TonyJewett tkircher@stillwatermining.com Tom Kircher Todd.O'Hair@bigsky.net Todd Q'Hair todd.rudolph@aecom.com Todd todg@cordite.com Tod Glenn townofalberton@blackfoot.net Diane Jodsaas tquarles@retec.com Tim Quarles traciebuhl@fs.fed.us Tracie twidboom@barr.com Tony Widboom victor.m.dugan@exxonmobil.com Victor M. Dugan videtich.callie@epa.gov Callie Videtich walkers@ci.billings.mt.us Scott Walker Wburget@peabodyenergy.com Wanda Burgett whitem@dawsoncountymail.com Mike While wildcovenants@msn.com Linda Dwarak william.thompson@northwestern.corBiliThompson wjacobs@flathead.mt.gov Wendee Jacobs wlneumiller@pplweb.com Bill Neumiller wlreynolds@bresnan.net William Reynolds woodproducts@mt.net Ellen Engstedt woodwardjj@cdm.com Jesse Woodward wwmercer@hollandhart.com bill mercer yardleysandra@hotmail.com Sandra Yardley yoonyoung.choi@mcdean.com Yoonyoung ChoiMembers:

Bud Clinch Carol Kenney Cathy Atkins Cliff Runningelk Don Potts Don Powers Erik Suffridge John Sesso Kevin Fetherston Lori Bocchino !VIike Ellitt Mike Philbin Mikel Siemens Rick Larson Rick Stefanic Tim Roark William Rogers mtcoal@aol.com carolsrainbow@aol.com cathy.atkins@rma.army.mil runningelkcliff@aol.com don.potts@cfc.umt.edu dpowers@bsb.mt.gov erik.suffridge@mt.usda.gov jsesso@bsb.mt.gov kfetherston@bna.com Ibocch@wyo.gov plessie.ellitt@usmc.mil Mike_Philbin@blm.gov mikel@rlkhydro.com ricklarson@bsb.mt.gov rick.stefanic@bia.gov Tim.Roark@galiatin.mt.gov william.rogers@deq.idaho.gov



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# Public Comment Periods By 

## Subjector Program:

IDl Air Quality Permits 

### IDl DraftTMDL Reports Major Facility Siting (MFS) 

### lI.1 Water Quality Discharoe Permits Ii.Il Nutrient Management Plans

The documents listedin the links above are notincludedin the fistbelow.

DownloadAcrobat Readertovi,ew the pdfdocuments.

Great Falls and Billings CO limited Maintenance Plan (LMP) Public Notice Billings LfII1P May23,2011 Montana Departmentof EnvironmentalQuality 1520 E. 6thAvenue P.O. Box 200901 Helena, MT 59620 Oline Barta MT-DEQ/ARMB PO Box 200901 Helena. MT 59620-0901 Phone: (406) 444-0524

Great Falls LMP

Bozeman Solvent Site Prooosed Plan and Draft FInal FeaSibility Stu;dy March 29, 2011 Montana Department of Environmental Quality 1100 N Last ChanceGulch Helena, MT 59620-0901 Kate Fry Montana Departmentof Environmental Quality P. Q. Box 200901 Helena, MT 59620-0901 Phone: (406}841-5066 Finding of No**Si~nificant** Impactfor the CityOf Bozeman waterTreatment Plant Improvements Prol'ect

__...,...­ --I April 1,2011

....J Montana Department of Environmental Quality 1520 E. 6thAvenue P.O. Box200901 Helena., MT 59620
--I GaryJ. Wiens. P.E. Montana Depa;rtmentof Environmenta4 Quality P. O. Box 200'901 Helena, MT 59620-0901 Phone: (406)444-7838
Draft Erwironm:ntaJ Assessment (EA) documenCforthe O'Nerli Coal Qutcrop Fire In Prairie County February 25, 2011 Montana Department of Environmental Quality 1100 N Last: Chance Gulch Helena. MT 59620-09'01 MikeGlenn (406) 841-5070 Fax: (406) 841-5050 

# ,**Findin~rf** No Significant Impactfor Town Eureka Water System Improvements ProJect February 6, 2011 1520 E. 6thAvenue P.O. Box 200901 Heleml, MT 59620 MarkSmith, P. E. Montana Departmentof Environmental Quality P. O. Box 200901 Helena, MT 59620-0901 Phone: (406)444-5325

### NO PUBLIC COMIVIENTS WERE RECEIVED FOR THE STATE IMPLEMENTATION PLAN FOR GREAT FALLS OR BILLINGS

### Volume IV Cha ter 56 STATE OF MONTANA AIR QUALITY CONTROL IMPLEMENTATION PLAN Subject: Yellowstone County Carbon Monoxide Limited Maintenance Plan



### 56.12 BILLINGS CARBON MONOXIDE LIMITED MAINTENANCE PLAN

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### 56.12.2 Introduction

As a result ofthe 1977 amendments to the Clean AirAct (CAA), Billings was designated nonattainmentfor carbon monoxide (CO) by the U.S. Environmental Protection Agency (EPA) in a Federal Register (FR) notice (43 FR 9010) on March 3, 1978. The National AmbientAir Quality Standard (NAAQS) for CO is 9 parts per million (ppm) for an 8-hour average concentration, notto be exceeded more than once per calendaryear. The CO violation was attributed primarily to motorvehicle emissions and control plans were developed to bring Billings back into compliance following the nonattainment designation.

The initial CO control plan focused on reconstructing the intersection at Exposition Drive and FirstAvenue in Billings. The final CO control plan incorporated computer modeling and intersection reconstruction, and was approved in the January 16, 1986 FR (51 FR 2397). The Billings CO issue was reevaluated in September 1990 based on the 1990 amendments to the CAA and the lack of NAAQS exceedances in the 1988 and 1989 CO monitoring data. In the November6, 1991 FR notice (56 FR 56799), Billings was listed as a "Not Classified" CO nonattainment area (NAA). However, EPA's redesignation process required a new emission inventory (EI) and development ofa maintenance plan.

The Montana Department of Environmental Quality (Department) developed a redesignation request with guidance based on the 1990 amendments to the CAA and a September4, 1992 EPA memo from John Calcagni to the EPA Regional Air Directors. The Governorof Montana submitted the redesignation request to EPA on February 9, 2001, and EPA approved it in an FR notice on February 21,2002 (67 FR 7966). The redesignation request addressed the five criteria required by Section 107(d)(3)(E) ofthe CAA, as follows:

Criterion 

### 1: Attainmentofthe Applicable NationalAmbientAir QualityStandard Criterion 

### 2: State Implementation Plan Approval Criterion 

### 3: PermanentandEnforceable Improvements in Air Quality Criterion 

### 4: FulfillmentofCAA Section 110andPart

### 0 Requirements



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### Criterion 

### 5: FullyApprovedMaintenance Plan underCAA Section 175A

Criterion 5 was addressed based on fulfillment ofcriteria addressed in the October6, 1995 EPA memo from Joseph Paisie, Group Leaderfor Integrated Policy and Strategies Group. That memo stated nonclassifiable CO nonattainmentareas fulfilling specific criterion could choose to seek redesignation undera limited maintenance plan (LMP) ratherthan the more rigorous full maintenance plan. Atthe end of2009, Billings still met the LMP criterion as outlined in the Paisie memo by having a CO design value at or below 7.65 ppm (85 percent ofthe 1-hour NAAQS). Underthe LMP option ofCAA Section 175A, afterthe initial 1O-year period, States are required to submit a revision or update to the LMP for another 1O-year period. The Department has updated the 2002 Billings CO LMP and the revisions are discussed underthe following five provisions.

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### 56.12.7.1 Provision 1: Attainment Inventory

On April 12, 1999, the Department submitted to EPA an EI for 1996 as part ofthe Billings CO redesignation request. The CO emissions in the EI were calculated to represent a standard CO season day, a typical 'winter day' in a typical 'CO season' for the base year of 1996 (January 1to December31). The CO season covered the months ofJanuary, November, and Decembe"r 1996. A weekdaywithin the CO season was selected since the highest average dailytraffic (ADT) generally occurs during the work week**~i.e.,** 

### Monday

- Friday). The study area was comprised of547 one-kilometer square (km ) grids which included the Billings CO NAA and the surrounding region outside ofthe NAA, which included the communities of Huntley and Laurel.

The total amount ofCO estimated in the 1996 Billings CO EI study area on a standard CO season weekdaywas 144,646 kilograms (kg). Thirty area sources and one general point source category, composed ofseven individual industries, were identified as significant CO emitters. Those sourceswere assigned to seven broad categories: aviation exhaust (2,444.02 kg/day), commercial and residential natural gas use (374.66 kg/day), industrial point processes (3,656.6 kg/day), nonroad motor exhaust (6,669.0 kg/day) railroad locomotive exhaust (235.47 kg/day), residential wood burning (12,204.34 kg/day), and roadway motorvehicle exhaust (119,061.84 kg/day). Motor vehicle exhaust contributed 82.31 percent ofall estimated CO emissions. Minor contributing source categories and their corresponding daily percentage ofcontribution were residential wood burning devices (8.44 percent), nonroad motorvehicle exhaust (4.61 percent), seven industrial point sources (2.53 percent), and aviation exhaust (1.69 percent). Commercial and residential natural gas combustion and railroad locomotive exhaust produced less than one percent ofthe estimated daily emissions in the 1996 Billings CO EI study area.
The 1996 CO EI used estimates ofactual emissions and the 2009 CO EI update was developed with surrogates applied to the 1996 EI emissions, except for the industrial point sources where actual emissions were obtained from the Department's permitfees database (CEDARS -Consolidated Environmental Data Acquisition and Retrieval System). The emissions were again divided into seven source categories: aviation exhaust, commercial and residential natural gas combustion, industrial point processes,

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nonroad motorvehicle exhaust, railroad locomotive exhaust, residential wood burning, and onroad motorvehicle exhaust. The 1996 EI was updated to 2009 levels using a combination offactors such a population growth, change in traffic volumes, and the results ofthe most recent EI of industrial point sources, which are discussed below.


### Population The percent change in the population ofYellowstone Countyfrom 1996to 2009 was selected as a surrogate to estimate the change in emissionsfor several area source categories. Every year by July 1, the Montana Department ofCommerce, Census and Economic Information Center (CEIC) estimatesthe population of Montana cities and counties using U.S. Census data. As ofJuly 1, 1996, the population ofYellowstone Countywas estimated at 126,6231 and on July 1,2009, the county population was estImated at 144,7972, an increase of 14.35 percent overthe 1996to 2009 time period. Overthe same time period, the estimated population ofthe city ofBillings increased from 86,369 to 105,8453, resulting in a change of22.55 percent. Department staff, using professionaljudgment, elected to use the change in the Yellowstone County population as the more conservative value for estimating increases in certain area source categories.



### Industrial PointSources Table 56.12.7.1.A presents the estimated actual 1996and 2009 emissions for a CO season dayforthe three point sources in the Billings CO NAAwith their 1996 operating schedules. For consistency and due to lack ofadditional information, the 1996 operating schedules were applied to the annual 2009 emissions.

1 http://WNW.ceic.mt.qov/HistoricaIPopData.asp 2 http://WNW.ceic.mt.qov/index.asp 3 http://ceic.mt.qov/
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### Volume IV Cha ter 56 STATE OF MONTANA AIR QUALITY CONTROL IMPLEMENTATION PLAN Subject: Yellowstone County Carbon Monoxide Limited Maintenance Plan

Table 56.12.7.1.A. PointSource Emissions inthe Billings CO NAA, 1996and 2009 CO Season Days.

Source
ConocoPhillips Com an Hours IDa

24 Percent of Emissions Daysl Weeks During CO Week Near Season

7 52 25 1996 Actual

CO Season (kg COICO

da 1

490.00 2009 Actual

CO Season

(kg COICO

da

1,287.26 162.71 Permit Number

2619 PPL Montana, LLC (formerly Montana

Power Com an 24 7 47 28 581.90 483.09 -16.98 2953 Western

Sugar Com an 24 7 20 51

--------­ 859.40 910.48 5.94 2912

Totals 1,931.30 2,680.83 38.81
1. 

### kg 

# =kilograms.
Any industrial point source emitting less than 1 metricton during a CO season day in the Billings CO NAAwas not included in this table for consistency with the approach in the development ofthe initial 1996 Billings CO EI. This approach eliminated the three industrial sources listed in Table 56.12.7.1.B. Ifthese three point sources were included in the 2009 CO EI update, their emissions would only represent approximately 2% ofthe total CO emissions from the point sources within the Billings CO NAA.

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Table 56.12.7.1.B. PointSources & Emissions Omittedfrom the 1996to 2009 CO Season Day Update.

Source Billin s - WastewaterTreatment Plant Cremation and Funeral Galle Interstate Brands Co Total 2009Actual CO Season 52.23 0.10 3.04 55.37 Permit Number

3827 3116

1. kg

# =kilograms.

Annual Average DailyTraffic The mobile source EI surrogate chosen was annual average dailytraffic (AADT) increases based on data collected overthe 1996to 2009 time period by Montana Department ofTransportation automatictraffic recorders (ATR) on the roadways in the Billings CO NAA4. The four, representative data sets chosen were:
• 19th StreetW between Wyoming Avenue and Yellowstone Avenue,
• Main Street (U.S. Route 87) between Milton Road and Hansen Lane,
• BroadwaterAvenue between 22nd StreetWest and Gay Place, and
• U.S. Interstate 90 (1-90) These roads are classified as local, principal arterials (two) and interstate, respectively. Table 56.12.7.1.C lists the AADT data collected during the 1999 through 2009 period forthese four roads.

4 http://www.mdt.mt.gov/publications/docs/datastats/atr/atrbook09.pdf

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### Volume IV Cha ter 56 STATE OF MONTANA AIR QUALITY CONTROL IMPLEMENTATION PLAN Subject: Yellowstone County Carbon Monoxide Limited Maintenance Plan

Table 56.12.7.1.C. AADT Data for Selected Roads inthe Billings CO NAA, 1996­ 2009.

Annual Average DailyTraffic Year 19th Street Main Street BroadwaterAve. 1-90 1996 7,778 32,208 13,670 17,754 1997


### -­ 32,734 14,480 17,683 1998

-­ 32,959 14,233 19,955 1999 7,964 33,597 15,426


### -­ 2000 8,139 '33,157 14,652



## -­ 2001 8,131 34,030 14,745

-­ 2002 8,022 35,133 14,741 23,252 2003 8,172 35,499 14,975 23,548 2004 8,242



### -­ . 14,730 24,630 2005 8,218 37,110 14,380 24,430 2006 8,336



### -­ 14,070 25,510 2007 7,904 36,398 14,350 26,191 2008 7,708 35,922 13,452 25,082 2009 8,203 36,858 12,832 26,161 1996to2009**~%** 5.46 14.44 -6.13 47.35


### The average ofall percent changes in AAOT forthe four roadways over 1996 to 2009 was 15.28%. The percent change value of 14.44% from the Main Street data was selected as a representative value forthis demonstration since itwas comparable to the percent change in population forthe Billings area. The overall result ofthe Billings CO NAA EI update from 1996to 2009 for a CO season day in kg is listed in Table 56.12.7.1.0.

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### Table 56.12.7.1.0. Billings CO NAA Emissions Comparison Between 1996 and 2009 

### CO Season Days.

1996Total Emissions 1996 2009Total 2009 Percent Source (kg CO/CO Percent Emissions Percent Change 1996 Category day)l ofTotal (kq CO/CO day) ofTotal to 2009 Surro{:late Aviation 2,345.02 2.47 2,681.60 2.46 14.35 Population Commercial & Residential Natural Gas 258.64 0.27 295.76 0.27 14.35 Population

Industrial

Point Permit Fee Sources 1,931.30 2.03 2680.83 2.46 38.81 EI Nonroad Motors 3,594.00 3.79 4,109.84 3.77 14.35 Population Railroad Locomotives 50.59 0.05 57.85 0.05 14.35 Population Residential

Wood I**Burnin~** 8,800.56 9.27 10,063.69 9.22 14.35 Population Roadway

Motor Vehicle 77,956.20 82.11 89,211.05 81.77 14.44 AADT2 17.86 TOTAL 94,936.31 100.00 109,100.63 100.00**(Avera~e)** 

## -­ 1. kg 

# =kilograms.
2. MDT

### = Annual average dailytraffic.

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### 56.12.7.2 Provision 2: Maintenance Demonstration

An October6, 1995 EPA memo·from Joseph Paisie, Group Leaderfor Integrated Policy and Strategies Group stated nonclassifiable CO nonattainment areas fulfilling specific criteria could choose to seek redesignation under a less rigorous plan than the full maintenance plan. The criterion is having CO design values at or below 7.65 ppm (85 percent ofthe 8-hr NAAQS) at the time of redesignation request. To qualifyfor the LMP option, the CO design value for the area, based on the eight consecutive quarters (two years ofdata) used to demonstrate attainment, must be at or below 7.65 ppm (85 percent ofthe 8-hr NAAQS.) Additionally, the design value forthe area must continue to be at or below 7.65 ppm until the time offinal EPA action on the redesignation request. Design values are determined based on the procedure outline in a June 18, 1990 EPA memo from William Laxton, Director ofthe Technical Support Division. Forthe 8-hour NAAQS, the design value is determined bythe second maximum 8-hour concentration value forthe most recent two years or eight quarters ofdata. The larger ofthe second maximum values (orthe "highest ofthe second highs") is used as the design value for each CO monitoring site. If more than one monitoring site exists in the area, the highest site design value is used as the design value for the entire NAA.

Forthe development ofthe initial Billings CO LMP, there were two monitoring sites operating in the Billings NAAwith data collected in 1998 and 1999. Those sites were the Bridal Shop (#30-111-0082) and Norwest Bank (#30-111-0082). Forthe initial LMP, the "highest ofthe second highs" was monitored in 1999 data atthe Bridal Shop, which resulted in a design value of5.8 ppm. Sincethatdesign value was belowthe 7.65 ppm limit, the Billings CO NAA metthe eligibility criterion for a LMP.
Overthe next decade, other CO monitoring siteswere operated in the Billings area. The Department documented the installatIon and removal ofthose sites through the annual network review process and via the submittal of network modification request forms to the EPA Region 8 office. All monitoring site actions were approved by EPA Region 8. The current CO monitoring site in Billings, St Luke's (#30-111-0085), has operated in the church parking lot at the corner of2nd 

### Avenue North and North 32nd



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Streetsince 2004. Based on the data from 2008 and 2009, the latestdesign value is 2.0 ppm, which is well below the 8-hr NAAQS of9 ppm and the CO LMP eligibility threshold of7.65 ppm. Figure 56.12.7.2.A represents the second highest 8-hr CO concentrations from all three of Montana's CO NAAs from 1998to 2009.



### 1998-2009 MT CO NAA Review 2nd Max 8-Hr

IIIMissoula#30-063-0005 • Great Falls #30-013-0001 -.Billings#30-111-00851

1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 Year

Figure 56.12.7.2.A. Second highest8-hr CO concentrations in Montana CO NAAs from 1998to 2009. 12 -,------------------------------------,

11 +----------------.--­

10 8-Hr NAAQS/MAAQS \

# \

819$.2008**de~** i value =2.0 ppm

o C 8**t--------;:::-:=;;:;;-:;=,---------~--------~** .2

:: 7**+--'-e::=~"------t-----~-----------------­** 

### :e 'lii 6**~_;__--~'-----------­** C\. 5**+----t--.I--~** 

### -t..----=­
III C\. 4

2 3



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## 56.12.7.3 Provision 3: Monitoring NetworkNerification ofContinued Attainment

CO compliance monitoring in the Billings area will continue. In the previous LMP this consisted ofthe Department and the Yellowstone County Air Pollution Control (YCAPC) program operating a gaseous CO monitoring instrument in an ambient air monitoring shelter in accordance with the Montana QualityAssurance Project Plan (QAPP), the EPA Quality Assurance Manual (EPA-600/9-76-005, revised December 1984), 40 CFR Part 50 including Appendix C, and 40 CFR Part 58 including Appendices A through G. Precision and accuracy data from the CO monitoring site(s) was submitted to EPA on a regular basis through the federal airquality database. The Departmentwill continue to monitor CO using an instrumental method or afunctionally equivalent monitoring methodology as approved by EPA. Emergency episode CO monitoring in Billings shall be conducted, if necessary, in accordance with Montana's Emergency Episode Avoidance Plan.

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### 56.12.7.4 Provision 4: Contingency Plan

Section 175(A)(d) ofthe CAA requires maintenance plans to contain contingency provisions to assure that Montana will promptly correct anyviolation ofthe CO NAAQS that might occurafterthe Billings CO NAAarea was designated back to attainment. EPA's redesignation guidance notes Montana is not required to have fully adopted contingency measures thatwould take effectwithoutfurtheraction by Montana. However, the contingency plan should ensure that contingency measures are adopted expeditiously once the need is triggered. The primary elements ofthe plan involve the tracking and triggering measures to determine when contingency measures are needed and a process for implementing appropriate control measures.

A. CO Concentration Tracking

As mentioned above in Provision 3, the Department and Riverstone Health will conduct traditional gaseous CO monitoring orsurrogate compliance monitoring in the Billings area.

B. SIP-Mandated Triggerand Response

i. Trigger

The LMP will use one exceedance ofthe CO NAAQS as the triggerfor adopting specific contingency measures. The adopted contingency measure(s) will be implemented only ifaviolation ofthe CO NAAQS occurs. Notification to EPA and to the local governments in the Billings area ofany exceedance will occur within 60 days as partofthe Quality Assurance/Quality Control (QAlQC) monitoring procedure.

ii. Response
Upon notification ofa CO NAAQS exceedance, the Department and Riverstone Health will recommend appropriate contingency measure(s) intended to avoid a violation ofthe CO NAAQS. Information on the historical exceedances ofthe

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standard, the meteorological conditions related to the recent exceedance(s), and the most recent estimates ofpopulation and traffic growth and emissions will be reviewed. The possibility ofan exceptional or natural eventwill also be evaluated. Following the review ofthis information, the necessary contingency measure(s) will be proposed for local adoption. The local adoption process will be completed within three months ofthe exceedance notification. The contingency measures provide a maintenance area with an opportunityto maintain its status as an attainment area.
Ifand when aviolation ofthe NAAQS occurs, the locally adopted contingency measure(s) will be fully implemented within one year. Section 175(A)(d) ofthe CAA states:

The failure ofanyarea redesignatedas an attainmentarea to maintain the nationalairqualitystandardconcernedshallnotresultin 

### a requirement that the State revise its State implementation plan unless the Administrator, in the Administrator's discretion, requires the State to submit

### a revised State implementation plan.

C. Possible Contingency Measures

Riverstone Health may choose one or more contingency measures to recommend to local officials and Departmentfor consideration. Riverstone Health will select contingency measures designed to bring the area back into compliancewith the CO NAAQS quickly and to specifically meetthe needs ofthe Billings area. Some potential contingency measures include:

• Implementation ofan local oxygenated fuel program in the Billings or Yellowstone County area forthe winter months of November, December, and January (typically the monthswith the highest CO levels);
• Implementation ofan episodic woodburning curtailment program; and/or
• Otheremission control measures appropriate for the area that are yet to be defined.

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D. Maintenance Plan Requirements

Aftersubmittal and approval ofthis second 10-yr LMP, there are no further requirements forany additional revisions or modifications to the LMP.

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### 56.12.7.5 Provision 5: Conformity Determinations Under Limited Maintenance Plans

The conformity provisions ofthe second 1O-year plan will continue from the initial plan. Since the Billings area was a 'Not Classified' nonattainment CO area, only some ofthe general provisions ofthe CAA Part D apply. These include the "General" and "Transportation" conformity provisions ofCAA Section 176(c). The conformity provisions ensure that federally funded or approved projects and actions conform to the airquality planning goals ofthe Billings CO control plan before they are constructed. For the purpose ofthe LMP for Billings, the conformity issues are slightly differentthan in afull maintenance plan and are explained below.

The transportation conformity rule of November24, 1993 (58 FR 62188) and the general conformity rule of November 30, 1993 (58 FR 63214) apply to nonattainment areas and maintenance areas operating under maintenance plans. Undereither rule, conformity can be demonstrated by indicating thatthe expected emissions from planned actions are consistentwith the emissions budget for the area. In areas with LMPs, conformity determinations are still required, but a LMP has no emission budget because "emissions budgets in limited maintenance plan areas may be treated as essentially not constraining for the length ofthe initial maintenance period" ("Limited Maintenance Plan Option for Nonclassifiable CO NonattainmentAreas," memorandum from Joseph Paisie to the EPA Regional Air Branch Chiefs, October 6, 1995).

For general conformity, all projects are considered to satisfythe "budgettest" specified in 40 CFR 93.158(a)(5)(i)(A) once EPA has approved a redesignation request. For transportation conformity, federal actions requiring conformity determinations are considered to satisfythe bUdget test specified in sections 93.118, 93.119 and 93.120 of the conformity rule afterthis LMP was initially approved by EPA. In Billings, federal actions are also considered to satisfythe transportation conformity rule's requirements for expeditious implementation oftransportation control measures (TCMs), because there are no TCMs in the Billings SIP. Transportation plans, transportation improvement programs and Federal projects still require conformity determinations in orderto proceed, and Federal projects are still subjectto the hotspot modeling requirements ofthe transportation conformity rule.

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