STATE OF TENNESSEE 

DEPARTMENT OF ENVIRONMENT AND CONSERVATION 

DIVISION OF AIR POLLUTION CONTROL 

9TH FLOOR L & C ANNEX ~ 

401 CHURCH STREET 

NASHVILLE, TN 37243-1531 r 

~ Certified Mail: 

October 12,2012 

Ms. Gwendolyn Keys Fleming 

Regional Administrator 

U.S. EPA, Region IV 

Atlanta Federal Center, 121

h Floor 

61 Forsyth Street, S.W. 

Atlanta, Georgia 30303-8960 

# 7010 0780 0001 5009 4329 

Return Receipt Requested 

Subject: Request to Parallel Process a Supplement to the State Implementation Plan for Knox County, 

TN. 

Dear Administrator Fleming: 

The Tennessee Division of Air Pollution Control received a request from the Knox County Department of 

Air Quality Management to submit to EPA a request for parallel processing of a supplement to the Knox 

County Department of Air Quality Management portion of the Tennessee State Implementation Plan. 

This supplement amends the Motor Vehicle Emissions Budget (MVEB) set in the Knox County 

maintenance Plan Update to the 1-Hour Ozone Maintenance Plan as approved by EPA in 2004. 

To expedite the review process, the Environmental Protection Agency is asked to parallel process this 

Supplement to the Knox County Department of Air Quality Management portion of the State 

Implementation Plan for Tennessee. One paper copy of the proposed revision is enclosed as well as an 

electronic copy on compact disc that is identical to the paper copy. A public hearing notice, which 

indicates the time and location of the public hearing to receive comments on this SIP revision, is 

enclosed. 

Your prompt consideration of this request is appreciated. If you need further information or documentation 

please contact Marc Corrigan at (615) 532-0616. 

~~A ~~~te~ne , P.E. 

Technical Secretary 

Tennessee Air Pollution Control Board 

Enclosures 

cc: Mr. R. Scott Davis, Branch Chief US EPA 

Ms. Lynorae Benjamin, US EPA 

Ms. Lynne A. Liddington, Knoxville, TN 

Mr. Malcolm H. Butler, DAPC, Nashville, TN 

Mr. Marc Corrigan, DAPC, Nashville, TN 
OFFICE OF COUNTY MAYOR 

Air Quality Management 

140 Dameron Avenue, Knoxville, TN 37917 

September 18, 2012 

Mr. Barry Stephens, P .E. 

Director, Division of Air Pollution Control 

401 Church Street 

Nashville, TN 37243-1531 

Dear Mr. Stephens: 

I have attached a proposed revision to the Knox County portion of the Tennessee State 

hnplementation Plan (SJP) for the one-hour ozone standard. This revision changes the Motor 

Vehicle Emissions Budget set in the Knox County Maintenance Plan Update as approved in 

2004. This SJP revision is currently in public review. 

In order to expedite adoption of the revised Motor Vehicle Emissions Budget, I request that you 

send a letter to EPA requesting parallel procession of this SJP revision. 

If you have any questions or comments regarding this matter, please feel free to me at 

(865)215-5900. 

Enclosure 

phone 865.215.5900 • fax 865.215.5902 • aqm@aqm.co.knox.tn.us 
Supplement to the 

Maintenance Plan Update 

For 

Knox County, Tennessee 

July 27,2012 

Prepared by: 

Knox County .Department of Air Quality Management 

140 Dameron Avenue 

Knoxville, TN 37917 
INTRODUCflON 

On October 27, 1993, the U.S. Environmental Protection Agency (EPA) redesignated 

Knox County from nonattainment to attainment for the 1-hour ozone National Ambient Air 

Quality Standard, through rulemaldng in the Federal Register. Additionally, as part of that 

rulemaking, EPA approved the initial 1-hour ozone maintenance plan for Knox County into 

the Tennessee State Implementation Plan (SIP) (58 FR 50271). Knox County submitted a 

subsequent revision to the Tennessee SlP on January 18, 1995. The purpose of this SIP 

revision request was to revise the projected inventory to provide a more accurate and practical 

motor vehicle emission budgets (MVEB) for the transportation planning community. EPA 

approved this revision to the Tennessee SIP on October 6, 1997 (62 FR 42068). This 

projected emissions inventory became the Knox County emissions budget upon approval. 

Knox County updated the projected emissions inventory and submitted an update to the 

Maintenance Plan on July 16, 2003. EPA approved this plan was approved on February 2, 

2004 (69 FR 4852). 

Subsequently, EPA has developed new mobile emissions estimation programs. The 

emissions estimates using this new software are higher than previous methods. This 

Supplement to the Maintenance Plan Update revises the MVEB by allocating the emissions 

safety margin for NOx to the mobile source sector. 

This revision to the Knox County portion of the Tennessee SlP is being submitted to . 

satisfy Section 175A(b) of the Clean Air Act as amended in 1990. 

REVISED PAGES 

Attached are the revised pages to the Maintenance Plan Update for Knox County, TN. 

To appropriately revise the original document, replace the following numbered pages. 

1 
SECTION 3.0 SUMMARY 

3.1 PROJECTED EMISSIONS INVENTORY AND BUDGET 

The projected emissions inventory for the Knox County Maintenance area for 

2004, 2010, and 2014 is presented in Table 3-1. The on-road mobile emissions for all years 

have been revised to incorporate the results from Mobile 6.2. The emissions inventories from 

1997 have been revised with Mobile 6.2 emission factors for on-road mobile sources and are 

also presented for comparison. 

3.2 MOTOR VEmCLE EMISSIONS BUDGET 

Pursuant to the EPA transportation conformity rule at 40 CFR Part 93, specific 

emission budgets are hereby defined for the on-road mobile sources portion of the emissions 

inventory. These budgets are to be used by the transportation authorities to assure that 

transportation plans, programs, and projects are consistent with, and confonn to, the 

maintenance of acceptable air quality in the Knox County maintenance area. The last year of 

this maintenance plan is 2014. Specific Motor Vehicle Emissions Budgets (MVEB) for 2004 

and 2014 are set for VOC and NOx as follow: 

2004 2014 

VOC, TPD 29.24 22.12 

NOx. TPD 33.89 31.71 

The above MVEB reflect the total on-road emissions for the MVEB years 2004 and 2014, 

plus an allocation from the available VOC and NOx safety margins. Specifically, 7.97 TPD 

of the available VOC safety margin is allocated to the 2004 MVEB and 11.61 TPD for the 

2014 MVEB. Additionally, 2. 79 TPD of the available NOx safety margin are allocated to the 

2004 MVEB and 18.43 TPD for the 2014 MVEB. The remaining safety margin for VOC for 

2004 is 7.97 TPD and for 2014 is 11.61 TPD. There is no safety margin remaining for NOx 

for2004 or 2014. 

The MVEB are consistent with the plan for maintaining total emissions :from all 

somce categories at or below the 1990 VOC andNOx, emissions levels through the year2014 

[ 6]. For future conformity determinations, transportation authorities should rely on the above 

MVEB unless this maintenance plan is revised. 

3.3 CONCLUSION 

The total VOC, NOx ,and CO emissions projected for 2004, 2010, and. 2014 f~r~e 

Knox County Maintenance Area are below the 1990 attainment level emissions mventones m 

the Knox County Maintenance Plan. 

10 
The emissions projections demonstrate that no additional measures are needed to 

assure continued attainment of the NAAQS for the 1-hour ozone standard [ 6). Additionally, 

the MVEB for 2004 and 2014, are consistent with maintenance and have been discussed with 

the interagency consultation workgroup for Knoxville. Upon approval of this SIP revision 

request, the revised MVEBs will replace the 2004 MVEBs and will establish 2014 MVEBs to 

be used for demonstrating transportation confonnity for Knox County. 

Table 3-1. Knox County Emission Budget 

TonsPerOax: safety 

Year Area Non-Road Biogenic Mobile Point Total Margin 

Volatile Organic Compgunds 

1990 28.82 9.81 32.43 40.84 8.06 119.96 

1993 29..25 9.96 32.43 32.35 8.64 112.63 

2004 30.90 10.52 32.43 21..27 8.90 104.02 15.94 

2010 31.84 10.84 32.43 13.93 9.76 98.80 

2014 32.48 11.06 32.43 10.51 10.26 96.74 23.22 

N!UP9en Oxides 

1990 3.66 9.77 0.00 37.62 8.96 80.01 

1993 3.72 9.92 0.00 34.85 9.54 58.03 

2004 3.92 10.48 0.00 31.10 11.73 57.23 2.79 

2010 4.04 10.79 0.00 19.99 12.53 47.35 

2014 4.13 11.01 0.00 13.27 13.17 41.58 18.43 

Carbon Monoxide 

1990 7.54 68.89 0.00 495.02 3.00 574.45 

1993 7.65 69.93 0.00 378.59 2.80 458.97 

2004 8.08 73.87 0.00 245.77 3.39 331.11 

2010 8.33 76.12 0.00 185.95 3.63 274.03 

2014 8.50 77.65 0.00 165.60 3.81 255.56 

11 
MWtiltli-U:#M'Mi mtJH ·n wcsP cl\bt"ch, ()(" llf, "soosr NOtlaoF 

~mJt~~'J'Ji dooc.'ts~':" PU8UCHEARING 

Vaeonf Spaces AvaHoble -\'illl'=-

One call sells it 

all!~your 

stuff inlhe 

Classi!ieds -

call637-4111 

9 

10 

11 

12 

IJ 

14 

i5 

\6 

17 

1S 

19 

'" 

today! 

alliin. lO point 

'2,100 Sf droe-in door SHOO mo. • 3.895 Sf dock, driveiAdoors 

Horlhshom Or I Bawn Ot area $2400 mo. '41100 SF dock. drive-in door. SZ500rno. •;_;oo Sf 1 uri"' 

'' drm $2033 mo '7,500 Sf do:k, 2 ifrfve·ini;loors 

$1100 mo. • IO.voo SF drive in dOOrs, 3 phase ol, $3/SO mo. 'li,IJSIJSfl'atlsidi! 

Dr $11,000 mo. '30.400 SF 3 ptu 

el, ~2.76 por Sf '12.000 SF 5 dock & driw--m door, 3 phaseel. $1.07 pmSf 

~ ~k 1401<t5 

The News 

Sentinel 

Classifieds: 

f'fhidnl I@W#{\t.li'f&IJ BE14*1J!Wil* 

BID FOil 

WATER PROOFING 

SERVICES ~~~~~~~i~~~~. U:iF'v\l:t'-, T!-1 'lUU 

The- COI'fh"act i)(!(;t.Jmt!flb lrn.l\> tH 411.1((lmlfl8d ct !M toileY!tkl• klo:Gtio~;h): 

t~~~~~ & AMO<:Iof!t$, l P. 

Lal"oll&tt& UfHitiM .Boord 

~F~~We"!'~~~WJ An., P.o. {l>l>, '-•H 

~:-oJtm~::~~ ~, mQY oo 

~~~~~tt=rtmrc~J~i!~ AOfl·fltftll'lflrlble. 

Afl Bidden tniWI obloto <.t>t.!rect diX"'" ~ntt trnm tM cfllctl' ~ ~ooon G. t'm>iP: 

~I! ~,:S~:kf~~;rw-s ft',nf 00 '1Cit W'H 

~~.~~:1.:.~~\~m'":~ ;::~\~t ~ Tft& o!~ 'tnm for lt$11\'ArY ¢'1' •rH'I~ 

1! 19_ calender l!ny.!" 

IIOlla TO <ONTIIACTOIISINVITATIOII TO BID 

'"'l:\~T.Ir'-nl'd~~ '~ 11.v•· FE!DERAL I">R.OJ!:CT ·~ l>TP-EJ4-?'1~(!38) TPP:'Lf'!~:_lt1!17lWJl2