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Tennessee Revised 8-Hour Ozone Standard

Nonattainment Area Designations

Nine-Factor Analysis
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Executive Summary

On March 12, 2008, the U.S. Environmental Protection Agency promulgated the new ozone standard of 

0.075 ppm. Pursuant to the Clean Air Act, the states have one year from issuance of the new standard to 

recommend areas of the state as nonattainment or attainment with the new standard. This technical 

summary document presents the State of Tennessee’s recommendations. As detailed in Table 1, the State 

of Tennessee recommends 15 counties be designated nonattainment including one county partially with 

the new ozone standard and the remaining 80 counties be designated as attainment. These 

recommendations are based on the Nine-Factor analysis, which was outlined in the EPA guidance dated 

December 4, 2008. The State of Tennessee evaluated the counties shown below (Figure S) in each 

metropolitan statistical area (MSA). The following is a summary of each MSA.

Figure S – Tennessee MSA/CBSA
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Table 1 - Tennessee 8-Hour Ozone County Designations

(1) Hawkins County recommended being partially designated nonattainment for the census block around the TVAJohn Sevier Fossil Plant.

(2)

 Sevierville County is a Micropolitan Statistical Area (MiSA).

Designation

MSA County Attainment Nonattainment

Chattanooga MSA Hamilton Yes

Marion Yes

Sequatchie Yes

Clarksville MSA Montgomery Yes

Stewart Yes

Tipton Yes

Davidson MSA Cannon Yes

Cheatham Yes

Davidson Yes

Dickson Yes

Hickman Yes

Macon Yes

Robertson Yes

Rutherford Yes

Smith Yes

Sumner Yes

Trousdale Yes

Williamson Yes

Wilson Yes

Johnson City MSA Carter Yes

Unicoi Yes

Washington Yes

Kingsport-Bristol MSA Hawkins (1) Yes

Sullivan Yes

Knoxville MSA Anderson Yes

Blount Yes

Knox Yes

Loudon Yes

Union Yes

Memphis MSA Fayette Yes

Shelby Yes

Tipton Yes

Morristown MSA Grainger Yes

Hamblen Yes

Jefferson Yes

Sevierville (2) MiSA Sevier Yes

Not in any MSA Meigs Yes
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(1) Chattanooga, TN-GA Metropolitan Statistical Area 

The Chattanooga, TN-GA Metropolitan Statistical Area (hereinafter referred to as the Chattanooga MSA) 

includes 3 TN counties. The TAPCD is recommending that one county be classified as nonattainment 

and two counties be classified as attainment. The single non-attainment county is Hamilton and was 

formerly classified as attainment. The air monitoring data in this county (Hamilton) showed a design 

value for 2006-8 data that exceeded the new Ozone standard. The two attainment counties are Marion 

and Sequatchie and have no air monitoring data. 

Figure 1 – Chattanooga MSA

Chattanooga MSA:
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COUNTY BY COUNTY SUMMARY 

The following is a county-by-county summary of the factors that were considered in the 

inclusion/exclusion evaluation for the Chattanooga MSA 8-hour ozone nonattainment area. These factors 

include precursor emissions, air quality data, population, urbanization, commuter/traffic patterns 

(―connectivity‖), meteorology, growth, and jurisdictional boundaries. All factors in the applicable EPA 

guidance were considered. 

Hamilton County

Recommendation: nonattainment

Jurisdictional boundaries: Hamilton County was previously classified as attainment for ozone.

Air Quality Data: There are two ozone monitors in Hamilton County. Both ozone monitors in 

Hamilton County showed a design value for 2006-8 data that is greater than the new standard of 

0.075 ppm. 

Emissions: 17,533 tons per year of NOx and 19,880 tons per year of VOC. Only 15.6% of NOx 

emissions are from point sources, 78.3% from mobile sources and 6% from area sources. VOC 

emissions are split primarily between area sources (52.5%) and mobile (39%) sources.

Population: 330,168 people and 568.1 people per square mile.

Traffic: 9,986,801 DVMT.

Growth: The population grew 7.2% between 2000 and 2007. The DVMT grew 15% between 2000 

and 2007.

Meteorology: The winds are climatologically from the south, southwest, and south-southwest.

Geography/topography: Most of County is located in the Valley and Ridge Geographic Region. The 

topography of the Valley and Ridge consists of long linear ridges and parallel lowland valleys that 

trend in a northeast to southwest direction. The ridges usually have high elevations of 1100 to 1500 

feet while adjacent valley floors vary from 700 feet to 1000 feet. A thin north-south strip of the 

County is located in the Cumberland Plateau Region having a different topography, like in places, the 

surface has been cut by stream valleys and precipitous gorges that are 200 to 400 feet deep.

Level of control of emissions sources: There are 76 point sources in Hamilton County that reported 

for the Hamilton County local program. Control information not available at this time. Stage 1 vapor 

recovery is required for gasoline dispensing facilities.

Summary: The TAPCD recommends that Hamilton County be designated as nonattainment for Ozone. 

The County contribution to the Chattanooga MSA remains to be determined for the entire MSA, which 

includes counties from Georgia. For the three county TN part of Chattanooga MSA, the county 

contribution for VOC is 20%, of which the majority (68%) is from mobile sources. It is to be noted that 

the point source emission contribution of VOC to the MSA emission level is less than 3%. About 88.8% 

of the population, 81.3% of the DVMT contributes to the three county TN part of the MSA. The 

population density is 568.1 per square mile. The county is a mixed urban (City of Chattanooga) 

and mostly sparsely populated mountainous region. 
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Marion County

Recommendation: Attainment.

Jurisdictional boundaries: Marion County was previously classified as attainment for ozone.

Air Quality Data: There is no ozone monitor in Marion County.

Emissions: 5503 tons per year of NOx and 2239 ton per year of VOC. Almost all of the (98.4%) NOx 

emissions are from mobile sources and 0.2% from point sources. VOC emissions are split primarily 

between area sources (44.4%) and mobile sources (55.1%). 

Population: 28,138 people and 55.8 people per square mile. 

Traffic: 1,892547 DVMT.

Growth: The population grew 1.3% between 2000 and 2007. The DVMT grew 8% between 2000 

and 2007.

Meteorology: The winds are climatologically from the south, southwest, and south-southwest.

Geography/topography: The County is located in the Cumberland Plateau Geographic Region. The 

Plateau’s topography varies in different parts of the region; like in places, the surface has been cut 

by stream valleys and precipitous gorges that are 200 to 400 feet deep. In Marion and Hamilton

Counties, the elevations range from 2000 to 2100 feet, while relief varies from 100 feet to as much as 

400 feet.

Level of control of emissions sources: There is one point source in Marion County that was reported 

for the 2005 NEI. There is no I/M program. Stage 1 vapor recovery is required for gasoline 

dispensing facilities. 

Summary: The TAPCD recommends that Marion County be designated as attainment for Ozone. The 

County contribution to the Chattanooga MSA remains to be determined for the entire MSA, which 

includes counties from Georgia. For the three county TN part of Chattanooga MSA, the county 

contribution for VOC is 9.8%, of which the majority (55.2%) is from mobile sources. It is to be noted that 

the point source emission contribution of VOC and NOx to the MSA emission level is less than 0.06%

0.2%, respectively. Only 7.5% of the population, 15.4% of the DVMT contributes to the three county TN 

part of the MSA. The population density is 55.8 per square mile. The county is mostly rural and agrarian 

and mostly a sparsely populated mountainous region. 

Sequatchie County

Recommendation: Attainment

Jurisdictional boundaries: Sequatchie County was previously classified as attainment for ozone.

Air Quality Data: There is no ozone monitor in Sequatchie County.

Emissions: 630 tons per year of NOx and 712 tons per year of VOC. Almost all of NOx (90.5%) 

emissions are from mobile sources; 0% from point sources. VOC emissions are split primarily 

between area sources (41.3%) and mobile sources (38%). 

Population: 13,369 people and 42.7 people per square mile. 

Traffic: 392,886 DVMT

Growth: The population grew 17.6% between 2000 and 2007. The VMT grew 20% between 2000 

and 2007.

Meteorology: The winds are climatologically from the south, southwest, and south-southwest.

Geography/topography: The County is located in the Cumberland Plateau Geographic Region. The 

Plateau’s topography varies in different parts of the region; like in places, the surface has been cut 

by stream valleys and precipitous gorges that are 200 to 400 feet deep. The tableland part of the 

Cumberland Plateau has an average elevation of 1800.
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Level of control of emissions sources: There is one point source in Sequatchie County that was 

reported for the 2005 NEI. There is no I/M program. Stage 1 vapor recovery is not required for all 

gasoline dispensing facilities.

Summary: The TAPCD recommends that Sequatchie County be designated as attainment for Ozone. The 

County contribution to the Chattanooga MSA remains to be determined for the entire MSA, which 

includes counties from Georgia. For the three county TN part of Chattanooga MSA, the county 

contribution for VOC and NOx are only 3.1% and 2.7%, respectively. It is to be noted that the point 

source emission contribution of VOC and NOx to the MSA emission level is less than 0.65% and 0.0%,

respectively. Only 3.6% of the population and 3.2% of the DVMT contributes to the three county TN part 

of the MSA. The population density is 17.6 per square mile. The county is rural and a sparsely populated 

mountainous region.
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(2) Clarksville, TN-KY Metropolitan Statistical Area 

The Clarksville, TN-KY Metropolitan Statistical Area (hereinafter referred to as the Clarksville MSA) 

includes 2 TN counties. There is no monitor in Montgomery County. There is a monitor in Christian County 

(Hopkinsville, KY) for the Clarksville, TN-KY Metropolitan Statistical Area. The TAPCD is 

recommending that both Tennessee counties be classified as attainment. The two counties are Montgomery 

and Stewart. 

Figure 2 – Clarksville MSA
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Clarksville MSA:

COUNTY BY COUNTY SUMMARY 

The following is a county-by-county summary of the factors that were considered in the 

inclusion/exclusion evaluation for the Clarksville MSA 8-hour ozone nonattainment area. These factors 

include precursor emissions, air quality data, population, urbanization, commuter/traffic patterns 

(―connectivity‖), meteorology, growth, and jurisdictional boundaries. All factors in the applicable EPA 

guidance were considered. 

Montgomery County

Recommendation: Attainment 

Jurisdictional boundaries: Montgomery County was previously classified as attainment for ozone.

Air Quality Data: There is no monitor in Montgomery County. There is a monitor in Christian 

County (Hopkinsville, KY) for the Clarksville, TN-KY Metropolitan Statistical Area that showed a 

design value for 2006-8 data that is greater than the new standard of 0.075 ppm. 

Emissions: 6275 tons per year of NOx and 6431 tons per year of VOC. The majority (93%) of NOx 

emissions is from mobile sources; 5% from area sources only 2% from point sources. VOC 

emissions are split primarily between area sources (42%) and mobile sources (50%). The total 

percentile contribution of NOx and VOC emissions for the entire Clarksville, TN-KY MSA that also 

include several counties from Kentucky is presently undetermined.

Population: 154,460 people and 250 people per square mile. A Montgomery County population 

representation for the entire Clarksville, TN-KY MSA is undetermined.

Traffic: 3,730,822 DVMT.

Growth: The population grew 14.6% between 2000 and 2007. The DVMT grew 21% between 2000 

and 2007.

Meteorology: The winds are climatologically from the south, southwest, and south-southwest and 

occasionally north-northwest during winter season.

Geography/topography: The County is located in the western division of the Highland Rim 

Geographic Region consists of a rolling terrain heavily dissected by stream erosion. Elevations range

from 800 to 1000 feet, while relief varies from 100 to 200 feet. The topography is comprised of 

undulating tableland of low relief with widely scattered hills and knobs.

Level of control of emissions sources: There are ten point sources in Montgomery County that 

reported for the 2005 NEI. Regulations have been implemented that control VOC emissions from 

point sources. Stage 1 vapor recovery is required for all gasoline dispensing facilities.

Summary: The TAPCD recommends that Montgomery County be designated as attainment for Ozone. 

The County contribution to the Clarksville MSA remains to be determined for the entire MSA, which 

includes counties from Kentucky. For the two county TN part of the Clarksville MSA, the county 

contribution for the following pollutants are 16.7% and 80% of NOx and VOC emissions, respectively, 

of which the majority (92.4%) of the NOx emissions are from mobile sources. It is to be noted 

that the point source emission contribution of NOx and VOC to the Clarksville MSA emission 

level from Montgomery County is less than 1% and less than 7%, respectively. The population 

density is only 111.7 per square mile. Most of the county is rural and agrarian except the City of 

Clarksville. 
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Stewart County

Recommendation: Attainment.

Jurisdictional boundaries: Stewart County was previously classified as attainment for ozone.

Air Quality Data: There is no ozone monitor in Stewart County.

Emissions: 31,352 tons per year of NOx and 1601 tons per year of VOC. Only 14% of VOC 

emissions are from point sources, 68% from mobile sources and 18% from area sources. Vast 

majority of the NOx emissions (87%) come from a single source (TVA Cumberland fossil plant).

Population: 13,087 people and 27 people per square mile.

Traffic: 354,697 DVMT.

Growth: The population grew 5.8% between 2000 and 2007. The DVMT grew 17% between 2000 

and 2007.

Meteorology: The winds are climatologically from the south, southwest, and south-southwest and 

occasionally north-northwest during the winter season.

Geography/topography: The County is located in the western division of the Highland Rim 

Geographic Region consists of a rolling terrain heavily dissected by stream erosion. Elevations range

from 800 to 1000 feet, while relief varies from 100 to 200 feet. The topography is comprised of 

undulating tableland of low relief with widely scattered hills and knobs.

Level of control of emissions sources: There are two point sources in Stewart County that reported 

for the 2005 NEI. There is currently no I/M program. Stage 1 vapor recovery is not required for 

gasoline dispensing facilities.

Summary: The TAPCD recommends that Stewart County be designated as attainment for Ozone. The 

County contribution to the Clarksville MSA remains to be determined for the entire MSA, which includes 

counties from Kentucky. For the two county TN part of Clarksville MSA, the county contribution for 

VOC is 20%, of which the majority (68%) is from mobile sources. The vast majority of the NOx 

emissions come from the TVA Cumberland fossil fuel plant. It is to be noted that the point source 

emission contribution of VOC to the MSA emission level is less than 3%. Only 7.8% of the population, 

8.7% of the DVMT contributes to the two county TN part of the MSA. The population density is only 27 

per square mile. The county is mostly rural and agrarian. 
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(3) Nashville-Davidson—Murfreesboro—Franklin, TN Metropolitan Statistical Area

34980 Nashville-Davidson—Murfreesboro—Franklin, TN Metropolitan Statistical Area 

Principal Cities: Nashville-Davidson (balance)∗, Murfreesboro, Franklin 

Cannon County, Cheatham County, Davidson County, Dickson County, Hickman County, Macon 

County, Robertson County, Rutherford County, Smith County, Sumner County, Trousdale County, 

Williamson County, Wilson County

The Nashville-Davidson—Murfreesboro—Franklin, TN Metropolitan Statistical Area (hereinafter 

referred to as Nashville MSA) contains 13 counties. The city of Nashville is the center of the Nashville 

MSA. The Nashville MSA also contains the mid-sized cities of Franklin and Murfreesboro. There are 

three major interstates that converge in downtown Nashville. The State of Tennessee recommends the 

following four counties be designated as nonattainment: Davidson, Sumner, Wilson, and Rutherford. Air 

monitoring data in each of these four counties showed a design value for 2006-8 data that exceeded the 

new ozone standard of 0.075 ppm. The State of Tennessee recommends the following nine counties be 

designated as attainment: Hickman, Dickson, Williamson, Cheatham, Robertson, Cannon, Smith, 

Trousdale, and Macon. 

Figure 3 – Nashville MSA
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Nashville MSA:

COUNTY BY COUNTY SUMMARY 

The following is a county-by-county summary of the factors that were considered in the 

inclusion/exclusion evaluation for the Nashville-Davidson-Murfreesboro-Franklin 8-hour ozone 

nonattainment area. These factors include precursor emissions, air quality data, population, urbanization, 

commuter/traffic patterns (―connectivity‖), meteorology, growth, and jurisdictional boundaries. All 

factors in the applicable EPA guidance were considered. 

Cannon County

Recommendation: Attainment

Air Quality Data: There is no ozone monitor in Cannon County.

Emissions: 342 tons per year of NOx and 537 tons per year of VOC. The majority (93%) of the NOx 

emissions are from mobile sources. VOC emissions are split primarily between area sources (51%) 

and mobile (49%) sources. Cannon County emits 0.4% of the total NOx emissions and 0.7% of the 

total VOC emissions for the 13-county Nashville MSA.

Population: 13,432 people and 48.3 people per square mile. Cannon County represents 0.9% of the 

total population for the 13-county Nashville MSA.

Traffic: 323,480 DVMT

Growth: The population grew 4.7% between 2000 and 2007. The VMT grew 9% between 2000 and 

2007.

Meteorology: The winds are climatologically from the south, southwest, and south-southwest.

Geography/topography: Most of Cannon County is located in the Highland Rim. The western part of 

Cannon County is located in the Central Basin.

Jurisdictional boundaries: Cannon County is currently classified as attainment.

Level of control of emissions sources: There are no point sources in Cannon County that reported for 

the 2005 NEI. There is currently no I/M program. Stage 1 and Stage II vapor recovery are not 

required for gasoline dispensing facilities.

Summary: The TAPCD recommends that Cannon County be designated as Attainment for several 

reasons. Cannon County has a small population and a small population density. Cannon County has 

a moderate growth rate. Due to the prevailing wind direction, emissions from Cannon County do not 

usually impact the other counties in the Nashville MSA since Cannon County is located on the far 

southeast corner of the Nashville MSA. Cannon County did not have any point sources that reported 

for the 2005 NEI, and there are only a few minor point sources in the county. Cannon County emits 

only 0.4% of the total NOx emissions and 0.7% of the total VOC emissions for the 13-county 

Nashville MSA.
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Cheatham County

Recommendation: Attainment

Air Quality Data: There is no ozone monitor in Cheatham County.

Emissions: 3,532 tons per year of NOx and 2,904 tons per year of VOC. The majority (95%) of the 

NOx emissions are from mobile sources. VOC emissions are split primarily between area sources 

(52%) and mobile (39%) sources. Cheatham County emits 3.8% of the total NOx emissions and 

3.8% of the total VOC emissions for the 13-county Nashville MSA.

Population: 39,112 people and 118.7 people per square mile. Cheatham County represents 2.6% of 

the total population for the 13-county Nashville MSA.

Traffic: 1,389,262 DVMT

Growth: The population grew 8.9% between 2000 and 2007. The VMT grew 20% between 2000 and 

2007.

Meteorology: The winds are climatologically from the south, southwest, and south-southwest.

Geography/topography: Cheatham County is located in the Highland Rim.

Jurisdictional boundaries: Cheatham County is currently classified as attainment.

Level of control of emissions sources: There are two major point sources in Cheatham County that 

reported for the 2005 NEI. There are no NOx or VOC controls on these two sources. There is 

currently no I/M program. Stage 1 vapor recovery is required for all gasoline dispensing facilities.

Summary: The TAPCD recommends that Cheatham County be designated as Attainment for several 

reasons. Cheatham County has a small population and an average population density. Cheatham 

County has a moderate growth rate. Cheatham County only has two point sources that reported for 

the 2005 NEI, and there are only a few minor point sources in the county. Cheatham County emits 

3.8% of the total NOx emissions and 3.8% of the total VOC emissions for the 13-county Nashville 

MSA.
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Davidson County

Recommendation: Nonattainment

Air Quality Data: There are two ozone monitors in Davidson County. One ozone monitor showed a 

design value for 2006-8 data that is greater than the new standard of 0.075 ppm. One ozone monitor 

showed a design value for 2006-8 data that is less than the new standard of 0.075 ppm.

Emissions: 32,613 tons per year of NOx and 24,377 tons per year of VOC. The majority (87%) of 

the NOx emissions are from mobile sources. VOC emissions are split primarily between area 

sources (43%) and mobile sources (50%). Davidson County emits 34.8% of the total NOx emissions 

and 31.9% of the total VOC emissions for the 13-county Nashville MSA.

Population: 619,626 people and 1134.6 people per square mile. Davidson County represents 40.7% 

of the total population for the 13-county Nashville MSA.

Traffic: 21,488,670 DVMT

Growth: The population grew 8.7% between 2000 and 2007. The VMT grew 19% between 2000 and 

2007.

Meteorology: The winds are climatologically from the south, southwest, and south-southwest.

Geography/topography: Most of Davidson County is located in the Central Basin. The western part 

of Davidson County is located in the Highland Rim.

Jurisdictional boundaries: Davidson County was previously classified as nonattainment for ozone.

Level of control of emissions sources: Regulations have been implemented that control VOC 

emissions from point sources. There is an I/M program in place. Stage 1 and Stage II vapor recovery 

are required for all gasoline dispensing facilities.

Summary: The TAPCD recommends that Davidson County be designated as Nonattainment for 

several reasons. Davidson County has an ozone monitor that showed a design value for 2006-8 data 

that is greater than the new standard of 0.075 ppm. The city of Nashville, which is a major 

metropolitan city, is located in Davidson County. Davidson County has a large population and a 

large population density. Davidson County has a moderately high growth rate. Davidson County has 

a high VMT, and there are three major interstates that go through downtown Nashville. Davidson 

County has a large number of point sources that reported for the 2005 NEI. Emissions are high in 

Davidson County. Davidson County emits 34.8% of the total NOx emissions and 31.9% of the total 

VOC emissions for the 13-county Nashville MSA.
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Dickson County

Recommendation: Attainment

Air Quality Data: There is no ozone monitor in Dickson County.

Emissions: 4,702 tons per year of NOx and 15,042 tons per year of VOC. The majority (94%) of the 

NOx emissions are from mobile sources. The majority (83%) of the VOC emissions are from point 

sources. Dickson County emits 5.0% of the total NOx emissions and 19.7% of the total VOC 

emissions for the 13-county Nashville MSA.

Population: 47,366 people and 88.1 people per square mile. Dickson County represents 3.1% of the 

total population for the 13-county Nashville MSA.

Traffic: 1,752,215 DVMT

Growth: The population grew 9.8% between 2000 and 2007. The VMT grew 15% between 2000 and 

2007.

Meteorology: The winds are climatologically from the south, southwest, and south-southwest.

Geography/topography: Dickson County is located in the Highland Rim.

Jurisdictional boundaries: Dickson County is currently classified as attainment.

Level of control of emissions sources: There are seven point sources in Dickson County that reported 

for the 2005 NEI. One major point source has VOC controls. There is currently no I/M program. 

Stage 1 vapor recovery is required for all gasoline dispensing facilities.

Summary: The TAPCD recommends that Dickson County be designated as Attainment for several 

reasons. Dickson County has a small population and a small population density. Dickson County has 

a moderate growth rate. Dickson County has one major interstate going through the county. Dickson 

County has a fair number of industrial sources. Dickson County emits 5.0% of the total NOx 

emissions and 19.7% of the total VOC emissions for the 13-county Nashville MSA.
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Hickman County

Recommendation: Attainment

Air Quality Data: There is no ozone monitor in Hickman County.

Emissions: 3,313 tons per year of NOx and 1,195 tons per year of VOC. The majority (72%) of the 

NOx emissions are from mobile sources. VOC emissions are split primarily between area sources 

(44%) and mobile (50%) sources. Hickman County emits 3.5% of the total NOx emissions and 1.6% 

of the total VOC emissions for the 13-county Nashville MSA.

Population: 23,768 people and 36.4 people per square mile. Hickman County represents 1.6% of the 

total population for the 13-county Nashville MSA.

Traffic: 969,022 DVMT

Growth: The population grew 6.6% between 2000 and 2007. The VMT grew 6% between 2000 and 

2007.

Meteorology: The winds are climatologically from the south, southwest, and south-southwest.

Geography/topography: Hickman County is located in the Highland Rim.

Jurisdictional boundaries: Hickman County is currently classified as attainment.

Level of control of emissions sources: There is one major point source in Hickman County that

reported for the 2005 NEI. This source has NOx controls. There is currently no I/M program. Stage 

1 and Stage II vapor recovery are not required for gasoline dispensing facilities.

Summary: The TAPCD recommends that Hickman County be designated as Attainment for several 

reasons. Hickman County has a small population and a small population density. Hickman County 

has a moderate growth rate. Hickman County only has one point sources that reported for the 2005 

NEI, and there are only a few minor point sources in the county. Hickman County emits 3.5% of the 

total NOx emissions and 1.6% of the total VOC emissions for the 13-county Nashville MSA.
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Macon County

Recommendation: Attainment

Air Quality Data: There is no ozone monitor in Macon County.

Emissions: 1,631 tons per year of NOx and 807 tons per year of VOC. NOx emissions are split 

primarily between mobile sources (30%) and point sources (65%). VOC emissions are split primarily 

between area sources (44%) and mobile (56%) sources. Macon County emits 1.7% of the total NOx 

emissions and 1.1% of the total VOC emissions for the 13-county Nashville MSA.

Population: 21,561 people and 66.4 people per square mile. Macon County represents 1.4% of the 

total population for the 13-county Nashville MSA.

Traffic: 446,592 DVMT

Growth: The population grew 5.8% between 2000 and 2007. The VMT grew 21% between 2000 and 

2007.

Meteorology: The winds are climatologically from the south, southwest, and south-southwest.

Geography/topography: Macon County is located in the Highland Rim.

Jurisdictional boundaries: Macon County is currently classified as attainment.

Level of control of emissions sources: There are two point sources in Macon County that reported for 

the 2005 NEI. There are no NOx and VOC controls on these point sources. There is currently no I/M 

program. Stage 1 and Stage II vapor recovery are not required for gasoline dispensing facilities.

Summary: The TAPCD recommends that Macon County be designated as Attainment for several 

reasons. Macon County has a small population and a small population density. Macon County has a 

moderate growth rate. Due to the prevailing wind direction, emissions from Macon County do not 

usually impact the other counties in the Nashville MSA since Macon County is located on the 

northeast corner of the Nashville MSA. Macon County only has two point sources that reported for 

the 2005 NEI, and there are only a few minor point sources in the county. Macon County emits only 

1.7% of the total NOx emissions and 1.1% of the total VOC emissions for the 13-county Nashville 

MSA.
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Robertson County

Recommendation: Attainment

Air Quality Data: There is no ozone monitor in Robertson County.

Emissions: 5,229 tons per year of NOx and 3,252 tons per year of VOC. The majority (91%) of the 

NOx emissions are from mobile sources. VOC emissions are split primarily between area sources 

(42%) and mobile (45%) sources. Robertson County emits 5.6% of the total NOx emissions and 

4.3% of the total VOC emissions for the 13-county Nashville MSA.

Population: 63,333 people and 114.2 people per square mile. Robertson County represents 4.2% of 

the total population for the 13-county Nashville MSA.

Traffic: 2,725,605 DVMT

Growth: The population grew 16.4% between 2000 and 2007. The VMT grew 14% between 2000 

and 2007.

Meteorology: The winds are climatologically from the south, southwest, and south-southwest.

Geography/topography: Robertson County is located in the Highland Rim.

Jurisdictional boundaries: Robertson County is currently classified as attainment.

Level of control of emissions sources: There are four point sources in Robertson County that 

reported for the 2005 NEI. There are no NOx or VOC controls on these four sources. There is 

currently no I/M program. Stage 1 vapor recovery is required for all gasoline dispensing facilities.

Summary: The TAPCD recommends that Robertson County be designated as Attainment for several 

reasons. Robertson County has a small population and an average population density. Robertson 

County has a moderately high growth rate. Robertson County does have two major interstates that 

run along the borders of the county. A significant percentage (42%) of commuters travel into 

Davidson County. Robertson County has a fair amount of industrial development. Robertson County 

emits 5.6% of the total NOx emissions and 4.3% of the total VOC emissions for the 13-county 

Nashville MSA.
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Designations – Nine-Factor Analysis Page 19 of 51

Rutherford County

Recommendation: Nonattainment

Air Quality Data: There is one ozone monitor in Rutherford County. The ozone monitor shows a 

design value for 2006-8 data that is greater than the new standard of 0.075 ppm.

Emissions: 9,817 tons per year of NOx and 11,075 tons per year of VOC. The majority (90%) of the 

NOx emissions are from mobile sources. VOC emissions are split between area sources (38%), 

mobile sources (35%), and point sources (27%). Rutherford County emits 10.5% of the total NOx 

emissions and 14.5% of the total VOC emissions for the 13-county Nashville MSA.

Population: 241,462 people and 294.1 people per square mile. Rutherford County represents 15.9% 

of the total population for the 13-county Nashville MSA.

Traffic: 7,394,885 DVMT

Growth: The population grew 32.7% between 2000 and 2007. The VMT grew 31% between 2000 

and 2007.

Meteorology: The winds are climatologically from the south, southwest, and south-southwest.

Geography/topography: Rutherford County is located in the Central Basin.

Jurisdictional boundaries: Rutherford County was previously classified as nonattainment for ozone.

Level of control of emissions sources: There are fourteen point sources in Rutherford County that 

reported for the 2005 NEI. There are no NOx controls on these point sources. Four point sources 

have VOC controls. Regulations have been implemented that control VOC emissions from point 

sources. There is an I/M program. Stage 1 and Stage II vapor recovery are required for all gasoline 

dispensing facilities.

Summary: The TAPCD recommends that Rutherford County be designated as Nonattainment for 

several reasons. Rutherford County has an ozone monitor that showed a design value for 2006-8 data 

that is greater than the new standard of 0.075 ppm. The city of Murfreesboro is located in Rutherford 

County. Rutherford County has a average-size population and a average-size population density. 

Rutherford County has a high growth rate. Rutherford County has a high VMT, and there is one 

major interstate that goes through Murfreesboro. Emissions are relatively high in Rutherford County. 

Rutherford County emits 10.5% of the total NOx emissions and 14.5% of the total VOC emissions for 

the 13-county Nashville MSA.
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Designations – Nine-Factor Analysis Page 20 of 51

Smith County

Recommendation: Attainment

Air Quality Data: There is no ozone monitor in Smith County.

Emissions: 3,790 tons per year of NOx and 1,411 tons per year of VOC. The majority (97%) of the 

NOx emissions are from mobile sources. VOC emissions are split primarily between area sources 

(36%) and mobile (52%) sources. Smith County emits 4.0% of the total NOx emissions and 1.8% of 

the total VOC emissions for the 13-county Nashville MSA.

Population: 18,845 people and 56.3 people per square mile. Smith County represents 1.2% of the 

total population for the 13-county Nashville MSA.

Traffic: 1,059,994 DVMT

Growth: The population grew 6.4% between 2000 and 2007. The VMT grew 9% between 2000 and 

2007.

Meteorology: The winds are climatologically from the south, southwest, and south-southwest.

Geography/topography: Part of Smith County is in the Central Basin and part is in the Highland Rim.

Jurisdictional boundaries: Smith County is currently classified as attainment.

Level of control of emissions sources: There are three point sources in Smith County that reported 

for the 2005 NEI. There are no NOx controls on these three point sources. One of the three point 

sources has VOC controls. There is currently no I/M program. Stage 1 and Stage II vapor recovery 

are not required for gasoline dispensing facilities.

Summary: The TAPCD recommends that Smith County be designated as Attainment for several 

reasons. Smith County has a small population and a small population density. Smith County has a 

moderate growth rate. Due to the prevailing wind direction, emissions from Smith County do not 

usually impact the other counties in the Nashville MSA since Smith County is located on the 

northeast corner of the Nashville MSA. Smith County only has three point sources that reported for 

the 2005 NEI, and there are only a few minor point sources in the county. Smith County emits 4.0% 

of the total NOx emissions and 1.8% of the total VOC emissions for the 13-county Nashville MSA.
Tennessee 8-Hour Ozone Nonattainment March 10, 2009

Designations – Nine-Factor Analysis Page 21 of 51

Sumner County

Recommendation: Nonattainment

Air Quality Data: There are two ozone monitors in Sumner County. Both ozone monitors showed a 

design value for 2006-8 data that is greater than the new standard of 0.075 ppm.

Emissions: 13,905 tons per year of NOx and 5,274 tons per year of VOC. NOx emissions are split 

primarily between mobile sources (31%) and point sources (66%). By itself, the TVA-Gallatin power 

plant accounts for 61% of the total NOx emissions. VOC emissions are split between area sources 

(39%), mobile sources (41%), and point sources (20%). Sumner County emits 14.8% of the total 

NOx emissions and 6.9% of the total VOC emissions for the 13-county Nashville MSA.

Population: 152,721 people and 246.5 people per square mile. Sumner County represents 10.0% of 

the total population for the 13-county Nashville MSA.

Traffic: 3,867,933 DVMT

Growth: The population grew 17.1% between 2000 and 2007. The VMT grew 22% between 2000 

and 2007.

Meteorology: The winds are climatologically from the south, southwest, and south-southwest.

Geography/topography: The southern part of Sumner County is located in the Central Basin and the 

northern part is located in the Highland Rim.

Jurisdictional boundaries: Sumner County was previously classified as nonattainment for ozone.

Level of control of emissions sources: There are eighteen point sources in Sumner County that 

reported for the 2005 NEI. Two point sources have NOx controls. Two point sources have VOC 

controls. Regulations have been implemented that control VOC emissions from point sources. There 

is an I/M program. Stage 1 and Stage II vapor recovery are required for all gasoline dispensing 

facilities.

Summary: The TAPCD recommends that Sumner County be designated as Nonattainment for several 

reasons. Sumner County has two ozone monitors that show a design value for 2006-8 data that is 

greater than the new standard of 0.075 ppm. Sumner County has a average-size population and a 

average-size population density. Sumner County has a high growth rate. Sumner County has a 

moderately high VMT. Sumner County has a moderately high number of point sources that reported 

for the 2005 NEI. Sumner County emits 14.8% of the total NOx emissions and 6.9% of the total 

VOC emissions for the 13-county Nashville MSA. Most of the NOx emissions come from TVAGallatin power plant.
Tennessee 8-Hour Ozone Nonattainment March 10, 2009

Designations – Nine-Factor Analysis Page 22 of 51

Trousdale County

Recommendation: Attainment

Air Quality Data: There is no ozone monitor in Trousdale County.

Emissions: 993 tons per year of NOx and 407 tons per year of VOC. The majority (95%) of the NOx 

emissions are from mobile sources. VOC emissions are split primarily between area sources (44%) 

and mobile (56%) sources. Trousdale County emits 1.1% of the total NOx emissions and 0.5% of the 

total VOC emissions for the 13-county Nashville MSA.

Population: 7,727 people and 63.5 people per square mile. Trousdale County represents 0.5% of the 

total population for the 13-county Nashville MSA.

Traffic: 222,109 DVMT

Growth: The population grew 6.4% between 2000 and 2007. The VMT grew 15% between 2000 and 

2007.

Meteorology: The winds are climatologically from the south, southwest, and south-southwest.

Geography/topography: The southern part of Trousdale County is located in the Central Basin and 

the northern part is located in the Highland Rim.

Jurisdictional boundaries: Trousdale County is currently classified as attainment.

Level of control of emissions sources: There is one point source in Trousdale County that reported 

for the 2005 NEI. There are no NOx and VOC controls on this point source. There is currently no 

I/M program. Stage 1 and Stage II vapor recovery are not required for gasoline dispensing facilities.

Summary: The TAPCD recommends that Trousdale County be designated as Attainment for several 

reasons. Trousdale County has a small population and a small population density. Trousdale County 

has a moderate growth rate. Due to the prevailing wind direction, emissions from Trousdale County 

do not usually impact the other counties in the Nashville MSA since Trousdale County is located on 

the northeast corner of the Nashville MSA. Trousdale County only has one point sources that 

reported for the 2005 NEI, and there are only a few minor point sources in the county. Trousdale 

County emits only 1.1% of the total NOx emissions and 0.5% of the total VOC emissions for the 13-

county Nashville MSA.
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Designations – Nine-Factor Analysis Page 23 of 51

Williamson County

Recommendation: Attainment

Air Quality Data: There is one ozone monitor in Williamson County. The ozone monitor shows a 

design value for 2006-8 data that is equal to the new standard of 0.075 ppm.

Emissions: 7,154 tons per year of NOx and 5,973 tons per year of VOC. The majority (94%) of the 

NOx emissions are from mobile sources. VOC emissions are split primarily between area sources 

(45%) and mobile sources (46%). Williamson County emits 7.6% of the total NOx emissions and 

7.8% of the total VOC emissions for the 13-county Nashville MSA.

Population: 166,128 people and 217.3 people per square mile. Williamson County represents 10.9% 

of the total population for the 13-county Nashville MSA.

Traffic: 5,733,049 DVMT

Growth: The population grew 31.2% between 2000 and 2007. The VMT grew 37% between 2000 

and 2007.

Meteorology: The winds are climatologically from the south, southwest, and south-southwest.

Geography/topography: Most of Williamson County is located in the Central Basin. The western 

part of Williamson County is located in the Highland Rim.

Jurisdictional boundaries: Williamson County was previously classified as nonattainment for ozone.

Level of control of emissions sources: There are seven point sources in Williamson County that 

reported for the 2005 NEI. There are no NOx controls on these point sources. Three point sources 

have VOC controls. Regulations have been implemented that control VOC emissions from point 

sources. There is an I/M program. Stage 1 and Stage II vapor recovery are required for all gasoline 

dispensing facilities.

Summary: The TAPCD recommends that Williamson County be designated as attainment for several 

reasons. Williamson County has an ozone monitor that showed a design value for 2006-8 data that is 

equal to the new standard of 0.075 ppm. The city of Franklin is located in Williamson County. 

Williamson County has an average-size population and a average-size population density. 

Williamson County has a high growth rate. Williamson County has a high VMT, and there is one 

major interstate that goes through Williamson County. Williamson County has an average number of 

point sources that reported for the 2005 NEI. Williamson County emits 7.6% of the total NOx 

emissions and 7.8% of the total VOC emissions for the 13-county Nashville MSA.
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Designations – Nine-Factor Analysis Page 24 of 51

Wilson County

Recommendation: Nonattainment

Air Quality Data: There is one ozone monitor in Wilson County. The ozone monitor shows a design 

value for 2006-8 data that is greater than the new standard of 0.075 ppm.

Emissions: 6,673 tons per year of NOx and 4,249 tons per year of VOC. The majority (95%) of the 

NOx emissions are from mobile sources. VOC emissions are split primarily between area sources 

(38%) and mobile sources (58%). Wilson County emits 7.1% of the total NOx emissions and 5.6% of 

the total VOC emissions for the 13-county Nashville MSA.

Population: 106,356 people and 155.6 people per square mile. Wilson County represents 7.0% of the 

total population for the 13-county Nashville MSA.

Traffic: 4,014,432 DVMT

Growth: The population grew 19.8% between 2000 and 2007. The VMT grew 26% between 2000 

and 2007.

Meteorology: The winds are climatologically from the south, southwest, and south-southwest.

Geography/topography: Wilson County is located in the Central Basin.

Jurisdictional boundaries: Wilson County was previously classified as nonattainment for ozone.

Level of control of emissions sources: There are three point sources in Wilson County that reported 

for the 2005 NEI. There are no NOx controls on these point sources. One point source has VOC 

controls. Regulations have been implemented that control VOC emissions from point sources. There 

is an I/M program. Stage 1 and Stage II vapor recovery are required for all gasoline dispensing 

facilities.

Summary: The TAPCD recommends that Wilson County be designated as Nonattainment for several 

reasons. Wilson County has an ozone monitor that showed a design value for 2006-8 data that is 

greater than the new standard of 0.075 ppm. Wilson County has an average-sized population and an 

average-size population density. Wilson County has a high growth rate. Wilson County has a 

moderately high VMT, and there is one major interstate that goes through Wilson County. Wilson 

County emits 7.1% of the total NOx emissions and 5.6% of the total VOC emissions for the 13-

county Nashville MSA.
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Designations – Nine-Factor Analysis Page 25 of 51

(4) Johnson City Metropolitan Statistical Area

Johnson City, TN Metropolitan Statistical Area (CBSA: 27740)

Principal Cities: Johnson City-Washington County, Elizabethton-Carter County, Erwin-Unicoi County

Carter County, Unicoi County, and Washington County (in Tennessee)

The Johnson City, TN Metropolitan Statistical Area (hereinafter referred to as the Johnson City MSA) 

consists of 3 TN counties. The TAPCD is recommending that all three counties be classified as 

attainment. 

Figure 4 – Johnson City MSA and Kingsport-Bristol MSA
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Designations – Nine-Factor Analysis Page 26 of 51

Johnson City MSA:

COUNTY BY COUNTY SUMMARY 

The following is a county-by-county summary of the factors that were considered in the 

inclusion/exclusion evaluation for the Johnson City MSA 8-hour ozone nonattainment area. These factors 

include precursor emissions, air quality data, population, urbanization, commuter/traffic patterns 

(―connectivity‖), meteorology, growth, and jurisdictional boundaries. All factors in the applicable EPA 

guidance were considered. 

Carter County

Recommendation: Attainment.

Air Quality Data: No ozone monitoring in this county.

Emissions: 1,365 tons per year of NOx and 2,369 tons per year of VOC (2005 NEI). There are small 

point source emissions of NOx (2%) and VOC (1%) of total emissions in this county. The majority 

(89%) of the NOx emissions are from mobile sources and (9%) from area sources. The majority 

(53%) of the VOC emissions are from mobile sources and (46%) from area sources. 

Population: 59,198 people (2007) and 173.6 people per square mile. The population amounts to 17% 

of the total for the Morristown MSA.

Traffic: Low/Medium VMT (1,168,904 VMT/day).

Growth: The population grew 4.3% between 2000 and 2007. The VMT grew 9% between 2000 and 

2007.

Meteorology: The winds are climatologically from the west, west-southwest, and southwest.

Geography/topography: Almost entirely rural. Unaka Smoky Mountains cover the entire county.

Jurisdictional boundaries: Entire County by itself.

Level of control of emissions sources: There are no point sources in the county that reported for the 

2005 NEI. Since 2005, the TAPCD requires the application of low NOx burner (LNB) technology at 

new and certain modified sources for NOx control. There is currently no I/M program. Stage I vapor 

recovery is required for gasoline dispensing facilities.

Carter County Summary

1) Fourth largest emissions for both VOC (2.4 TPD) and NOx (1.3 TPD) in the KB/JC CBSA. 

2) No ozone monitoring in the county. 

3) Third largest population in the area (59,198). 

4) Third largest annual VMT in the area (0.43 billion VMT/year). Lowest VMT growth rate (9%) 

predicted between 2000 and 2007. 

5) Meteorological analysis is supportive of frequent contribution. 

6) 13.3% population growth rate predicted between 2000 and 2007. 

7) Not located in the current 8-hour ozone maintenance area. 

8) Emission reductions have been realized from previous VOC/NOx control requirements. 

The TAPCD recommends that Carter County be designated attainment for ozone. The county does not 

have a representative ozone monitoring and its contribution to the nearest violating monitor in Sullivan 

County is minimal as it is located downwind from that monitor (east, southeast) in a rural and agrarian 

environment. The majority of NOx (89%) and VOC (53%) emissions are coming from mobile sources 

and the VMT growth rate is the lowest in the MSA (9%) from 2000-2007.
Tennessee 8-Hour Ozone Nonattainment March 10, 2009

Designations – Nine-Factor Analysis Page 27 of 51

Unicoi County

Recommendation: Attainment.

Air Quality Data: No ozone monitoring in this county.

Emissions: 953 tons per year of NOx and 1,068 tons per year of VOC (2005 NEI). There are 

extremely small point source emissions of NOx (0.03%) and VOC (0.03%) of total emissions in this 

county. The majority (88%) of the NOx emissions are from mobile sources and (12%) from area 

sources. The majority (62%) of the VOC emissions are from mobile sources and (38%) from area 

sources. 

Population: 17,699 people (2007) and 95.2 people per square mile. The population amounts to 46% 

of the total for the Johnson City MSA.

Traffic: Low VMT (627,850 VMT/day).

Growth: The population grew 0.2% between 2000 and 2007. The VMT grew 31% between 2000 and 

2007.

Meteorology: The winds are climatologically from the west, west-southwest, and southwest.

Geography/topography: Almost entirely rural. Unaka Smoky Mountains cover the entire county.

Jurisdictional boundaries: Entire County by itself.

Level of control of emissions sources: There are no point sources in the county that reported for the 

2005 NEI. Since 2005, the TAPCD requires the application of low NOx burner (LNB) technology at 

new and certain modified sources for NOx control. There is currently no I/M program. Stage I vapor 

recovery is required for gasoline dispensing facilities.

Unicoi County Summary

1) Lowest emissions for both VOC (1.1 TPD) and NOx (0.95 TPD) in the KB/JC CBSA.

2) No ozone monitoring in the county.

3) Lowest population in the area (17,699). 

4) Lowest annual VMT in the area (0.23 billion VMT/year). Highest VMT growth rate (31%) 

predicted between 2000 and 2007. 

5) Meteorological analysis is not supportive of frequent contribution. 

6) 0.2% population growth rate predicted between 2000 and 2007. 

7) Not located in the current 8-hour ozone maintenance area. 

8) Emission reductions have been realized from previous VOC/NOx control requirements. 

The TAPCD recommends that Unicoi County be designated attainment for ozone. The county does not 

have a representative ozone monitoring and its contribution to the nearest violating monitor in Sullivan 

county is minimal as it is located downwind (east, southeast) from that monitor in a rural and agrarian 

environment. The majority of NOx (88%) and VOC (62%) emissions are coming from mobile sources 

and this county has the lowest VMT (13%) in the MSA.

Washington County

Recommendation: Attainment.

Air Quality Data: No ozone monitoring in this county.

Emissions: 4,055 tons per year of NOx and 5,420 tons per year of VOC (2005 NEI). There are small 

point source emissions of NOx (3%) and VOC (8%) of total emissions in this county. The majority 

(89%) of the NOx emissions are from mobile sources and (8%) from area sources. The majority 

(47%) of the VOC emissions are from mobile sources and (45%) from area sources. 
Tennessee 8-Hour Ozone Nonattainment March 10, 2009

Designations – Nine-Factor Analysis Page 28 of 51

Population: 116,657 people (2007) and 361.2 people per square mile. The population amounts to 

46% of the total for the Morristown MSA.

Traffic: High VMT (3,008,993 VMT/day).

Growth: The population grew 8.8% between 2000 and 2007. The VMT grew 12% between 2000 and 

2007.

Meteorology: The winds are climatologically from the west, west-southwest, and southwest.

Geography/topography: Rural with an urban center. Ridge and Valley topography covers the western 

portion while Unaka Smoky Mountains cover the eastern portion of the county.

Jurisdictional boundaries: Entire County by itself.

Level of control of emissions sources: There are only two major point sources in the county that 

reported for the 2005 NEI. They are: Cantech Industries (source 90-0232, unit 001) and IRIS Glen 

Environmental Center (source 90-0246, unit 001). These two sources are controlled for VOC 

emissions employing activated carbon adsorption and flaring technologies respectively. Since 2005, 

the TAPCD requires the application of low NOx burner (LNB) technology at new and certain 

modified sources for NOx control. There is currently no I/M program for mobile emissions. Stage I 

vapor recovery is required for gasoline dispensing facilities.

Washington County Summary

1) Second largest emissions for VOC (5.4 TPD) and fourth largest for NOx (4.1 TPD) in the 

KB/JC CBSA. 

2) No ozone monitoring in the county.

3) Second largest population in the area (116,657). 

4) Second largest annual VMT in the area (1.1 billion VMT/year). 

5) Meteorological analysis is not supportive of frequent contribution. 

6) 8.8% population growth rate predicted between 2000 and 2007. 

7) Not located in the current 8-hour ozone maintenance area. 

8) Emission reductions have been realized from previous VOC/NOx control requirements. 

The TAPCD recommends that Washington County be designated attainment for ozone. The county does 

not have a representative ozone monitoring and its contribution to the nearest violating monitor in 

Sullivan county is minimal as it is located downwind (south, southeast) from that monitor in a rural and 

agrarian environment. Point source emissions of NOx (3%) and VOC (8%) are very small. Even though 

the VMT is on the high scale, its growth rate is only modestly progressing (12%) from 2000-2007.

(5) Kingsport-Bristol (TN)-Bristol (VA)- Metropolitan Statistical Area
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Designations – Nine-Factor Analysis Page 29 of 51

Kingsport-Bristol (TN)-Bristol (VA), TN-VA Metropolitan Statistical Area (CBSA: 28700)

Principal TN Cities: Kingsport and Bristol -Sullivan County, Rogersville-Hawkins County

Hawkins County, and Sullivan County (in Tennessee)

The Kingsport-Bristol (TN)-Bristol (VA), TN-VA Metropolitan Statistical Area (hereinafter referred to as 

the Kingsport-Bristol MSA) consists of 2 TN counties. The TAPCD is recommending that Sullivan 

County be classified as nonattainment and Hawkins County be classified as partial nonattainment. 

Figure 5A – Kingsport-Bristol MSA and Johnson City MSA
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Designations – Nine-Factor Analysis Page 30 of 51

Kingsport-Bristol MSA:

COUNTY BY COUNTY SUMMARY 

The following is a county-by-county summary of the factors that were considered in the 

inclusion/exclusion evaluation for the Kingsport-Bristol MSA 8-hour ozone nonattainment area. These 

factors include precursor emissions, air quality data, population, urbanization, commuter/traffic patterns 

(―connectivity‖), meteorology, growth, and jurisdictional boundaries. All factors in the applicable EPA 

guidance were considered. 

Hawkins County

Recommendation: Partial Nonattainment.

Air Quality Data: No ozone monitoring in this county.

Emissions: 15,362 tons per year of NOx and 4,688 tons per year of VOC (2005 NEI). The majority 

(88%) of the NOx emissions are from point sources. VOC point source emissions account for (39%), 

area VOC sources account for (33%), and mobile VOC sources account for (28%) of total emissions 

respectively.

Population: 57,054 people (2007) and 117.4 people per square mile. The population amounts to 27% 

of the total for the Kingsport-Bristol MSA.

Traffic: Medium VMT (1,234,119 VMT/day).

Growth: The population grew 6.5% between 2000 and 2007. The VMT grew 12% between 2000 and 

2007.

Meteorology: The winds are climatologically from the west, west-southwest, and southwest.

Geography/topography: Almost entirely rural. Ridge and Valley topography covers the entire county.

Jurisdictional boundaries: Entire County by itself.

Level of control of emissions sources: There are six major point sources and one minor source in the 

county that reported for the 2005 NEI. They are: Holston Army Ammunition Plant ( major sources 

37-0028 and 37-1029), TVA-John Sevier Fossil Plant (major source 37-0007, units 001 thru 004), TN 

Valley Manufacturing Co. (minor source 37-0029), International Playing Card & Label Co. (major 

sources 37-0057 and 37-0076), and BFI Waste System (major source 37-1029). TVA-John Sevier 

boilers are controlled with LNB for NOx emissions. All the other facilities are controlled for VOC 

emissions. Controls including catalytic and thermal oxidizers, activated carbon absorbers, catalytic 

afterburners, direct flame afterburners and flares. Since 2005, the TAPCD requires the application of 

low NOx burner (LNB) technology at new and certain modified sources for NOx control. There is 

currently no I/M program for mobile emissions. Stage I vapor recovery is required for gasoline

dispensing facilities.

Hawkins County Summary

1) Second largest emissions for VOC (4.7 TPD) and third largest for NOx (15.4 TPD) in the 

KB/JC CBSA.

2) No ozone monitoring in the county. 

3) Fourth largest population in the area (57,054). 

4) Third largest annual VMT in the area (0.45 billion VMT/year). 

5) Meteorological analysis is not supportive of frequent contribution .

6) 6.5% population growth rate predicted between 2000 and 2007. 

7) Not located in the current 8-hour ozone maintenance area.
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Designations – Nine-Factor Analysis Page 31 of 51

8) Emission reductions have been realized from previous VOC/NOx control requirements. 

The TAPCD recommends that Hawkins County be designated ozone partial nonattainment for the county 

portion limited to the census tract around the TVA John Sevier Fossil Plant as shown in Figure 5B, and 

detailed in Tables 5A and 5B below. The county does not have a representative ozone monitoring and its 

contribution to the nearest violating monitor in Sullivan County is minimal as it is located downwind 

from those monitors (West and Northwest) in a predominately southwesterly wind vectors impacting the 

monitors. This county is in a rural and agrarian environment. The county VOC emission contribution 

(18%) to the Kingsport-Bristol MSA is the lowest. This county has the lowest population (27%), 

population density (117.4), and VMT (22%) for the Kingsport-Bristol MSA.

Figure 5B- TVA John Sevier Fossil Plant Census Tract
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Designations – Nine-Factor Analysis Page 32 of 51

Parcel Information

AREA 30740571.97

PERIMETER 89761.99943

PARC_ 28095

PARC_ID 28122

CALC_ACRE 705.706

MAP

PARCELID A037126 02300 00001126 C

ID 126 023.00

ST_NUM

STREET OLD STATE HWY 70

ADDRESS OLD STATE HWY 70

OWNER T V A

PROPTYPE 4

PT 04 FEDERAL

LNDAPRDATE 11/19/2002

UPDATED 2/17/2006

Table 5A- TVA John Sevier Census Tract Details

Hawkins County John Sevier FP

Census Information

STFID STATE COUNTY TRACT BLKGRP BLOCK AREALAND TOTALPOP

470730508001026 47 73 50800 1 1026 6088446 119

470730508001027 47 73 50800 1 1027 88732 0

470730508001028 47 73 50800 1 1028 26911 0

470730508001029 47 73 50800 1 1029 87059 0

470730508001032 47 73 50800 1 1032 416900 0

Table 5B- TVA John Sevier Census Tract Information
Tennessee 8-Hour Ozone Nonattainment March 10, 2009

Designations – Nine-Factor Analysis Page 33 of 51

Sullivan County

Recommendation: Nonattainment.

Air Quality Data: Hill Road monitor in violation of the standard (2006-08 design value – 0.081 ppm)

Emissions: 16,878 tons per year of NOx and 20,849 tons per year of VOC (2005 NEI). The majority 

(63%) of the NOx emissions are from point sources. Mobile NOx sources account for (33%) and area 

NOx sources account for (4%) of the rest of the emissions. VOC emissions are generated from area 

sources at (50%), point sources at (30%), and mobile sources at (20%) of total emissions respectively.

Population: 153,519 people (2007) and 371.7 people per square mile.

Traffic: High VMT (4,393,590 VMT/day). 

Growth: The population grew 0.3% between 2000 and 2007. The VMT grew 11% between 2000 and 

2007.

Meteorology: The winds are climatologically from the west, west-southwest, and southwest.

Geography/topography: Rural area with urban centers. Ridge and Valley topography covers the 

western portion while Unaka Smoky Mountains cover the eastern portion of the county.

Jurisdictional boundaries: Entire County stays as part of the existing Kingsport-Sullivan MSA.

Level of control of emissions sources: There are five major point sources in the county that reported 

for the 2005 NEI. They are: Eastman Chemicals (source 82-0003), Seaman Corp. (source 82-0007), 

Holston Army Ammunition Plant (source 82-0018), Microporous Products (source 82-0153), and 

City of Kingsport (source 82-0021). Emission units at these facilities are controlled for NOx and 

VOC emissions. Employed NOx control technologies including thermal oxidation, condensing, and 

flaring. VOC controls including thermal and catalytic oxidizers, wet scrubbers, packed bed scrubbers, 

activated carbon adsorbers, and condensers. City of Kingsport emission unit is now closed. Since 

2005, the TAPCD requires the application of low NOx burner (LNB) technology at new and certain 

modified sources for NOx control. There is currently no I/M program for mobile emissions. Stage I 

vapor recovery is required for gasoline dispensing facilities.

Sullivan County Summary

1) Largest emissions for both VOC (20.8 TPD) and NOx (16.9 TPD) in the KB/JC CBSA. 

2) Hill Road monitor violates the 8-hour ozone standard using 2006-08 (design value – 0.081 

ppm). 

3) Largest population in the area (153,519). 

4) Largest annual VMT in the area (1.6 billion VMT/year). 

5) Meteorological analysis is supportive of frequent contribution.

6) 0.3% population growth rate predicted between 2000 and 2007. 

7) Located in the current 8-hour ozone maintenance area. 

8) Emission reductions have been realized from previous VOC/NOx control requirements. 
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(6) Knoxville Metropolitan Statistical Area

Knoxville, TN Metropolitan Statistical Area (CBSA: 28940)

Principal Cities: Knoxville-Knox County, Oak Ridge-Anderson County, Maryville-Blount County

Anderson County, Blount County, Knox County, Loudon County, and Union County (in Tennessee)

The Knoxville, TN Metropolitan Statistical Area (hereinafter referred to as the Knoxville MSA) consists 

of 5 TN counties (Figure 1). The TAPCD is recommending that four counties be classified as 

nonattainment and one county be classified as attainment. The single attainment-designated county is 

Union and was formerly classified as attainment also. 

Figure 6 – Knoxville MSA
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Knoxville MSA:

COUNTY BY COUNTY SUMMARY 

The following is a county-by-county summary of the factors that were considered in the 

inclusion/exclusion evaluation for the Knoxville MSA 8-hour ozone nonattainment area. These factors 

include precursor emissions, air quality data, population, urbanization, commuter/traffic patterns 

(―connectivity‖), meteorology, growth, and jurisdictional boundaries. All factors in the applicable EPA 

guidance were considered. 

Anderson County

Recommendation: Nonattainment.

Air Quality Data: Freels Bend monitor in violation of the standard (2005-07 design value – 0.080 

ppm; 2006-08 design value – 0.078 ppm).

Emissions: 16,606 tons per year of NOx and 11,401 tons per year of VOC (2005 NEI). The majority 

(76%) of the NOx emissions are from point sources. VOC emissions are primarily generated from 

area sources (78%). Mobile sources account for (22%) of NOx and (18%) of VOC emissions 

respectively.

Population: 73,471 people (2007) and 217.4 people per square mile.

Traffic: High VMT (2,303,855 VMT/day).

Growth: The population grew 3% between 2000 and 2007. The VMT grew 8% between 2000 and 

2007.

Meteorology: The winds are climatologically from the southwest, west-southwest, and southsouthwest.

Geography/topography: Cumberland Plateau covers the western portion and Ridge and Valley 

topography covers the eastern portion of the county. 

Jurisdictional boundaries: Entire County stays part of the existing Knoxville MSA.

Level of control of emissions sources: There are four major point sources in the county that reported 

for the 2005 NEI. They are: TVA-Bull Run Fossil Plant (source 01-0009, unit 001), U.S. DOE Y-12 

(source 01-0020, unit 0012 and 0014), Omega Cabinetry (source 01-0145, unit 003), and Chestnut 

Ridge Landfill (source 01-0170, unit 001). TVA-Bull Run boiler is controlled with an SCR for NOx 

emissions. The U.S. DOE Y-12 units are controlled with a high efficiency packed bed scrubber for 

NOx control. Omega Cabinetry and Chestnut Ridge Landfill are controlled with an incinerator and a 

flair for VOC emissions respectively. Since 2005, the TAPCD requires the application of low NOx 

burner (LNB) technology at new and certain modified sources for NOx control. There is currently no 

I/M program for mobile emissions. Stage I vapor recovery is required for gasoline dispensing 

facilities.

Anderson County Summary

1) Second largest emissions for both VOC (16.9 TPD) and NOx (26.5 TPD) in the Knoxville 

MSA.

2) Freels Bend monitor violates the 8-hour ozone standard using 2006-08 (design value – 0.078 

ppm). 

3) Third largest population in the area (73,471). 

4) Fourth largest annual VMT in the area (0.84 billion VMT/year). Lowest VMT growth rate 

(8%) predicted between 2000 and 2007. 
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5) Meteorological analysis is supportive of frequent contribution .

6) 3% population growth rate predicted between 2000 and 2007. 

7) Located in the current 8-hour ozone maintenance area.

8) Emission reductions have been realized from previous VOC/NOx control requirements. 

Blount County

Recommendation: Nonattainment.

Air Quality Data: Look Rock monitor in violation of the standard (2005-07 design value – 0.086 

ppm; 2006-08 design value – 0.085 ppm).

Emissions: 4,650 tons per year of NOx and 7,418 tons per year of VOC (2005 NEI). The majority 

(78%) of the NOx emissions are from mobile sources. VOC emissions are generated from mobile 

sources at (41%). VOC point source emissions account for (25%) and area VOC sources account for 

(34%) of total emissions respectively.

Population: 119,855 people (2007) and 214.4 people per square mile.

Traffic: High VMT (3,045,669 VMT/day).

Growth: The population grew 13.3% between 2000 and 2007. The VMT grew 28% between 2000 

and 2007.

Meteorology: The winds are climatologically from the southwest, west-southwest, and southsouthwest.

Geography/topography: Ridge and Valley topography covers the western portion of the county while 

Unaka Smoky Mountains extend throughout the eastern portion of the county.

Jurisdictional boundaries: Entire County stays part of the existing Knoxville MSA.

Level of control of emissions sources: There are only two major point sources in the county that 

reported for the 2005 NEI. They are: Alcoa-South Plant (source 05-0008, unit 030) and Denso 

Corporation (source 05-0138, units 0039 and 0095). The Alcoa unit is controlled with an incinerator 

for VOC emissions and Denso has miscellaneous control devices for NOx emissions. Since 2005, the

TAPCD requires the application of low NOx burner (LNB) technology at new and certain modified 

sources for NOx control. There is currently no I/M program for mobile emissions. Stage I vapor 

recovery is required for gasoline dispensing facilities.

Blount County Summary

1) Third largest emissions for VOC (11.0 TPD) and fourth largest for NOx (7.4 TPD) in the 

Knoxville MSA. Third largest for combined emissions of VOC and NOx (18.4 TPD). 

2) Look Rock monitor violates the 8-hour ozone standard using 2006-08 (design value – 0.085 

ppm) 

3) Second largest population in the area (119,855) 

4) Second largest annual VMT in the area (1.1 billion VMT/year). Highest VMT growth rate 

(28%) predicted between 2000 and 2007. 

5) Meteorological analysis is supportive of frequent contribution 

6) 13.3% population growth rate predicted between 2000 and 2007 

7) Located in the current 8-hour ozone maintenance area 

8) Emission reductions have been realized from previous VOC/NOx control requirements 
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Knox County

Recommendation: Nonattainment.

Air Quality Data: Mildred Drive monitor in violation of the standard (2005-07 design value – 0.088 

ppm; 2006-08 design value – 0.088 ppm).

Emissions: 21,949 tons per year of NOx and 20,700 tons per year of VOC (2005 NEI). The majority 

(84%) of the NOx emissions are from mobile sources. VOC emissions are generated from mobile 

sources at (41%). VOC mobile source emissions account for (56%) and area VOC sources account 

for (39%) of total emissions respectively.

Population: 382,032 people (2007) and 750.6 people per square mile.

Traffic: High VMT (14,429,475 VMT/day).

Growth: The population grew 11% between 2000 and 2007. The VMT grew 26% between 2000 and 

2007.

Meteorology: The winds are climatologically from the southwest, west-southwest, and southsouthwest.

Geography/topography: Urban area. Ridge and Valley topography covers the entire county.

Jurisdictional boundaries: Entire County stays part of the existing Knoxville MSA.

Level of control of emissions sources: There is only one major point source in the county that 

reported for the 2005 NEI. Rohm and Haas (source 47-0012, unit 001) are controlled with an 

afterburner for VOC emissions. Since 2005, the TAPCD requires the application of low NOx burner 

(LNB) technology at new and certain modified sources for NOx control. There is currently no I/M 

program for mobile emissions. Stage I vapor recovery is required for gasoline dispensing facilities.

Knox County Summary

1) Largest emissions for both VOC (30.7 TPD) and NOx (35.0 TPD) in the Knoxville MSA. 

2) Mildred Drive monitor violates the 8-hour ozone standard using 2006-08 (design value –

0.088 ppm) 

3) Largest population in the area (382,032) 

4) Largest annual VMT in the area (5.3 billion VMT/year). Second highest VMT growth rate 

(26%) predicted between 2000 and 2007. 

5) Meteorological analysis is supportive of frequent contribution 

6) 11% population growth rate predicted between 2000 and 2007 

7) Located in the current 8-hour ozone maintenance area 

8) Emission reductions have been realized from previous VOC/NOx control requirements 

Loudon County

Recommendation: Nonattainment.

Air Quality Data: Roberts Road monitor in violation of the standard (2006-08 design value – 0.081 

ppm)

Emissions: 6,613 tons per year of NOx and 4,141 tons per year of VOC (2005 NEI). The majority 

(81%) of the NOx emissions are from mobile sources. VOC emissions are generated from mobile 

sources at (46%). VOC point source emissions account for (25%) and area VOC sources account for

(29%) of total emissions respectively.

Population: 45,448 people (2007) and 198.5 people per square mile.

Traffic: High VMT (2,235,637 VMT/day). 
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Growth: The population grew 16.3% between 2000 and 2007. The VMT grew 18% between 2000 

and 2007.

Meteorology: The winds are climatologically from the southwest, west-southwest, and southsouthwest.

Geography/topography: Ridge and Valley topography covers the entire county.

Jurisdictional boundaries: Entire County stays part of the existing Knoxville MSA.

Level of control of emissions sources: There are only two major point sources in the county that 

reported for the 2005 NEI. They are: Tate & Lyle (source 53-0081, units 002 and 004) and Malibu 

Boats West (source 53-0098, units 001 and 002). These two sources are controlled for both NOx and 

VOC emissions. Since 2005, the TAPCD requires the application of low NOx burner (LNB) 

technology at new and certain modified sources for NOx control. There is currently no I/M program 

for mobile emissions. Stage I vapor recovery is required for gasoline dispensing facilities.

Loudon County Summary

1) Fourth largest emissions for VOC (6.2 TPD) and third largest for NOx (10.5 TPD) in the 

Knoxville MSA. Fourth largest for combined emissions of VOC and NOx (16.7 TPD). 

2) Roberts Road monitor violates the 8-hour ozone standard using 2006-08 (design value – 0.081 

ppm) 

3) Fourth largest population in the area (45,448) 

4) Fourth largest annual VMT in the area (0.82 billion VMT/year). Third highest VMT growth 

rate (18%) predicted between 2000 and 2007. 

5) Meteorological analysis is supportive of frequent contribution 

6) 16.3% population growth rate predicted between 2000 and 2007 

7) Located in the current 8-hour ozone maintenance area 

8) Emission reductions have been realized from previous VOC/NOx control requirements 

Union County

Recommendation: Attainment.

Air Quality Data: No ozone monitoring in this county.

Emissions: 1,026 tons per year of NOx and 1,121 tons per year of VOC (2005 NEI). The majority 

(59%) of the NOx emissions are from mobile sources and (34%) from point sources. The majority 

(65.4%) of the VOC emissions are from mobile sources and (34.5%) from area sources. This county 

has the lowest emissions strength of all the counties in the MSA with 3% or less of the total.

Population: 18,877 people (2007) and 84.3 people per square mile. The population amounts to only 

3% of the total for the Knoxville MSA.

Traffic: Low VMT (373,435 VMT/day).

Growth: The population grew 6% between 2000 and 2007. The VMT grew 18% between 2000 and 

2007.

Meteorology: The winds are climatologically from the southwest, west-southwest, and southsouthwest.

Geography/topography: Almost entirely rural. Ridge and Valley topography covers the entire 

county.

Jurisdictional boundaries: Entire County by itself.

Level of control of emissions sources: There are no point sources in the county that reported for the 

2005 NEI. Since 2005, the TAPCD requires the application of low NOx burner (LNB) technology 
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Designations – Nine-Factor Analysis Page 39 of 51

at new and certain modified sources for NOx control. There is currently no I/M program. Stage I 

vapor recovery is required for gasoline dispensing facilities.

Union County Summary

1) Lowest emissions for both VOC (1.7 TPD) and NOx (1.6 TPD) in the Knoxville MSA.

2) No ozone monitoring in the county 

3) Lowest population in the area (18,877) 

4) Lowest annual VMT in the area (0.14 billion VMT/year). 

5) Meteorological analysis is not supportive of frequent contribution 

6) 6% population growth rate predicted between 2000 and 2007 

7) Located in the current 8-hour ozone maintenance area 

8) Emission reductions have been realized from previous VOC/NOx control requirements 

The TAPCD recommends that Union County be designated attainment for ozone. The county does not 

have a representative ozone monitoring and its contribution to the nearest violating monitors in Knox and 

Jefferson counties is minimal as it is located downwind from those monitors (North) in a predominately 

southwesterly wind vectors impacting the monitors. This county is in a rural and agrarian environment. 

The county total emission contribution (3% or less) to the Knox MSA is the lowest for both NOx and 

VOC emissions. This county has the lowest population (3%), population density (84.3), and VMT (2%) 

for the entire Knoxville MSA.
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(7) Memphis, TN-MS-AR Metropolitan Statistical Area 

Principal Cities: Memphis-Shelby County 

Shelby County, Fayette County, Tipton County (in Tennessee)

The Memphis, TN-MS-AR Metropolitan Statistical Area (hereinafter referred to as the Memphis MSA) 

includes 3 TN counties. The City of Memphis is the center of the Memphis MSA. It also contains the city 

of West Memphis (in Arkansas). The Tennessee Division of Air Pollution Control (TAPCD) recommends 

that one county be classified as nonattainment and two counties be classified as attainment. The single 

non-attainment county is Shelby. The air monitoring data in this county showed a design value for 2006-8 

data that exceeded the new Ozone standard. The two attainment counties are Fayette and Tipton. 

Figure 7 – Memphis MSA
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Designations – Nine-Factor Analysis Page 41 of 51

Memphis MSA:

COUNTY BY COUNTY SUMMARY 

The following is a county-by-county summary of the factors that were considered in the 

inclusion/exclusion evaluation for the Memphis MSA 8-hour ozone nonattainment area. These factors 

include precursor emissions, air quality data, population, urbanization, commuter/traffic patterns 

(―connectivity‖), meteorology, growth, and jurisdictional boundaries. All factors in the applicable EPA 

guidance were considered. 

Fayette County

Recommendation: Attainment

Jurisdictional boundaries: Fayette County was previously classified as attainment for ozone.

Air Quality Data: There is no ozone monitor in Fayette County.

Emissions: 3,884 tons per year of NOx and 1835 tons per year of VOC. The vast majority (97%) of 

the NOx emissions are from mobile sources. VOC emissions are split primarily between area sources 

(44%) and mobile (51%) sources.

Population: 37,193 people and 40.8 people per square mile

Traffic: 1,633,529 DVMT

Growth: The population grew 29.1% between 2000 and 2007. The DVMT grew 16% between 2000 

and 2007.

Meteorology: The winds are climatologically from the south, southwest, and south-southwest.

Geography/topography: The County is located in the West Tennessee Plain Geographic Region. The 

topography of this West Tennessee Plain is a relatively flat terrain that slopes gently westward to the 

Mississippi River floodplain. 

Level of control of emissions sources: There are two point sources in Fayette County that reported 

for the 2005 NEI. There is currently no I/M program. Stage 1 vapor recovery is required for 

gasoline dispensing facilities.

Summary: The TAPCD recommends that Fayette County be designated as attainment for Ozone. The 

County contribution to the Memphis MSA for the following pollutants are only 5.66% and 3.97% of NOx 

and VOC emissions, respectively, of which the vast majority (97%) of the NOx emissions are from 

mobile sources. It is to be noted that the point source emission contribution of NOx and VOC to the 

Memphis MSA emission level is less than 1%. Only 3.7% of the population and 6% of the DVMT 

contributes to the MSA. The population density is only 40.8 per square mile. The county, even though 

adjacent to Shelby County is mostly rural and agrarian. The geographical location of the county (east) is 

downstream of the general annual wind flow direction, thus having a minimal impact on the Memphis 

MSA Ozone level. 
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Shelby County

Recommendation: Nonattainment

Jurisdictional boundaries: Shelby County was previously classified as nonattainment for ozone.

Air Quality Data: There are a total of four ozone monitors in Memphis, TN-MS-AR Metropolitan 

Statistical Area, of which two are in Shelby County, one in DeSoto County (MS) and one in 

Crittenden County (AR). Both ozone monitors in Shelby County showed a design value for 2006-8 

data that is greater than the new standard of 0.075 ppm. Also, the other two monitors in the same 

MSA area (MS and AR) showed a design value for 2006-8 data that are is greater than the new 

standard of 0.075 ppm.

Emissions: 57,842 tons per year of NOx and 41,885 tons per year of VOC. The majority (69%) of 

the NOx emissions are from mobile sources; 27.5% from point sources. VOC emissions are split 

primarily between area sources (47%) and mobile sources (41%). Shelby County emits 84.3% of the 

total NOx emissions and 90.6% of the total VOC emissions for the 3-county Memphis (TN Part) 

MSA.

Population: 910,100 people and 1188.7 people per square mile. Shelby County represents 90.6% of 

the total population for the 3-county Memphis (TN part) MSA.

Traffic: 24,502,348 DVMT

Growth: The population grew 1.4% between 2000 and 2007. The DVMT grew 16% between 2000 

and 2007.

Meteorology: The winds are climatologically from the south, southwest, and south-southwest.

Geography/topography: Most of County is located in the West Tennessee Plain Geographic Region. 

The topography of this West Tennessee Plain is a relatively flat terrain that slopes gently westward to 

the Mississippi River floodplain. A small north-south strip of the County is located in the Mississippi 

Alluvial Valley Region.

Level of control of emissions sources: There are 47 point sources in Shelby County that reported for 

the 2005 NEI. Regulations have been implemented that control VOC emissions from point sources. 

There is an I/M program for the City of Memphis within the Shelby County. They are yet to institute 

the OBD program. Stage 1 vapor recovery is required for all gasoline dispensing facilities.

Summary: The TAPCD recommends that Shelby County be designated as non-attainment for Ozone. The 

Shelby County contribution to the Memphis MSA for the following are: 90.56% of the population, 

89.64% of the DVMT, 84.3% and 90.6% of NOx and VOC emissions, respectively. 
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Tipton County

Recommendation: Attainment

Jurisdictional boundaries: Tipton County was previously classified as attainment for ozone.

Air Quality Data: There is no ozone monitor in Tipton County.

Emissions: 6,925 tons per year of NOx and 2525 tons per year of VOC. The vast majority (94%) of 

the NOx emissions are from mobile sources. 52% of VOC emissions are from mobile sources and 

39% from area sources. 

Population: 57,686 people and 111.7 people per square mile

Traffic: 1,198,023 DVMT

Growth: The population grew 12.5% between 2000 and 2007. The DVMT grew 23% between 2000 

and 2007.

Meteorology: The winds are climatologically from the south, southwest, and south-southwest.

Geography/topography: Most of County is located in the West Tennessee Plain Geographic Region. 

The topography of this West Tennessee Plain is a relatively flat terrain that slopes gently westward to 

the Mississippi River floodplain. A small north-south strip of the County is located in the Mississippi 

Alluvial Valley Region. 

Level of control of emissions sources: There are four point sources in Tipton County that reported for 

the 2005 NEI. There is currently no I/M program. Stage 1 vapor recovery is required for gasoline 

dispensing facilities.

Summary: The TAPCD recommends that Tipton County be designated as attainment for Ozone. The 

County contribution to the Memphis MSA for the following pollutants are 10% and 5.46% of NOx and 

VOC emissions, respectively, of which the majority (94%) of the NOx emissions are from mobile 

sources. It is to be noted that the point source emission contribution of NOx and VOC to the Memphis 

MSA emission level is less than 1%. Only 5.74% of the population, 4.38% of the DVMT contribution to 

the MSA. The population density is only 111.7 per square mile. The county, even though adjacent to 

Shelby County is mostly rural and agrarian. The geographical location of the county (north) is 

downstream of general annual wind flow direction, thus having a minimal impact on the Memphis MSA 

Ozone level.

(8) Morristown Metropolitan Statistical Area
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Designations – Nine-Factor Analysis Page 44 of 51

Morristown, TN Metropolitan Statistical Area (CBSA: 34100)

Principal Cities: Morristown-Hamblen County, Dandridge-Jefferson County, Rutledge-Grainger County

Grainger County, Hamblen County, and Jefferson County (in Tennessee)

The Morristown, TN Metropolitan Statistical Area (hereinafter referred to as the Morristown MSA) 

consists of 3 TN counties. The TAPCD is recommending that one county be classified as nonattainment 

and two counties be classified as attainment. The two attainment-designated counties are Hamblen and 

Grainger and were formerly classified as attainment also. 

Figure 8 – Morristown MSA
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Designations – Nine-Factor Analysis Page 45 of 51

Morristown MSA:

COUNTY BY COUNTY SUMMARY 

The following is a county-by-county summary of the factors that were considered in the 

inclusion/exclusion evaluation for the Morristown MSA 8-hour ozone nonattainment area. These factors 

include precursor emissions, air quality data, population, urbanization, commuter/traffic patterns 

(―connectivity‖), meteorology, growth, and jurisdictional boundaries. All factors in the applicable EPA 

guidance were considered. 

Grainger County

Recommendation: Attainment.

Air Quality Data: No ozone monitoring in this county.

Emissions: 897 tons per year of NOx and 1,540 tons per year of VOC (2005 NEI). There are no point 

source emissions of NOx or VOC in this county. The majority (94%) of the NOx emissions are from 

mobile sources. The majority (66%) of the VOC emissions are from mobile sources and (34%) from 

area sources. 

Population: 22,546 people (2007) and 80.5 people per square mile. The population amounts to 17% 

of the total for the Morristown MSA.

Traffic: Low VMT (656,056 VMT/day).

Growth: The population grew 9.1% between 2000 and 2007. The VMT grew 12% between 2000 and 

2007.

Meteorology: The winds are climatologically from the southwest, west-southwest, and southsouthwest.

Geography/topography: Almost entirely rural. Ridge and Valley topography covers the entire county.

Jurisdictional boundaries: Entire County by itself.

Level of control of emissions sources: There are no point sources in the county that reported for the 

2005 NEI. Since 2005, the TAPCD requires the application of low NOx burner (LNB) technology at 

new and certain modified sources for NOx control. There is currently no I/M program.

Grainger County Summary

1) Lowest emissions for both VOC (2.3 TPD) and NOx (1.4 TPD) in the Morristown MSA and 

second lowest in the overall Knoxville CBSA.

2) No ozone monitoring in the county 

3) Lowest population in the Morristown MSA (22,546), and second lowest in the Knoxville 

CBSA. 

4) Lowest annual VMT in the Morristown area (0.24 billion VMT/year), and second lowest in the 

Knoxville CBSA. 

5) Meteorological analysis is not supportive of frequent contribution 

6) 9% population growth rate predicted between 2000 and 2007 

7) Not located in the current 8-hour ozone maintenance area 

8) Emission reductions have been realized from previous VOC/NOx control requirements 

The TAPCD recommends that Grainger County be designated attainment for ozone. The county does not 

have a representative ozone monitoring and its contribution to the nearest violating monitors in Knox and 

Jefferson counties is minimal as it is located downwind from those monitors (North) in a 
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predominately southwesterly wind vectors impacting the monitors. This county is in a rural and 

agrarian environment. The county total emission contribution (8% or less) to the Morristown 

MSA is the lowest for both NOx and VOC emissions. This county has the lowest population (17%), 

population density (80.5), and VMT (14%) for the entire Morristown MSA.

Hamblen County

Recommendation: Attainment.

Air Quality Data: No ozone monitoring in this county.

Emissions: 5,340 tons per year of NOx and 14,562 tons per year of VOC (2005 NEI). The majority 

(53%) of the NOx emissions are from mobile sources and (40%) from point sources. The majority 

(69%) of the VOC emissions are from point sources. Approximately (17%) of VOC emissions come 

from area sources and 13% from mobile sources. 

Population: 61,829 people (2007) and 384 people per square mile. The population amounts to 46% of 

the total for the Morristown MSA.

Traffic: Medium VMT (1,796,853 VMT/day).

Growth: The population grew 6.4% between 2000 and 2007. The VMT grew 12% between 2000 and 

2007.

Meteorology: The winds are climatologically from the southwest, west-southwest, and southsouthwest.

Geography/topography: Almost entirely rural. Ridge and Valley topography covers the entire county.

Jurisdictional boundaries: Entire County by itself.

Level of control of emissions sources: There are five major point sources in the county that reported 

for the 2005 NEI. They are: NCR Corp. (source 32-0018, unit 001), International Polymers (source 

32-0022, units 001 and 002), Macdermid Printing (source 32-0160, units 2-5), Vacumet Corp. (source 

32-0169, unit 04), and Liberty Fibers (32-0197, unit 03). All these emission units are controlled for 

VOC emissions. Controls including thermal oxidizers, wet scrubbers, activated carbon absorbers, 

catalytic converters and afterburners, and condensers. Liberty Fibers has been shut down recently and 

is now closed. Since 2005, the TAPCD requires the application of low NOx burner (LNB) technology 

at new and certain modified sources for NOx control. There is currently no I/M program for mobile 

emissions. 

Hamblen County Summary

1) Highest emissions for both VOC (21.6 TPD) and NOx (8.5 TPD) in the Morristown MSA 

Second highest VOC and fourth highest NOx emissions in the overall Knoxville CBSA.

2) No ozone monitoring in the county 

3) Highest population in the Morristown MSA (61,829), and fifth highest in the Knoxville CBSA. 

4) Second Highest annual VMT in the Morristown area (0.66 billion VMT/year) 

5) Meteorological analysis is not supportive of frequent contribution 

6) 6% population growth rate predicted between 2000 and 2007 

7) Not located in the current 8-hour ozone maintenance area 

8) Emission reductions have been realized from previous VOC/NOx control requirements 

The TAPCD recommends that Hamblen County be designated attainment for ozone. The county does not 

have a representative ozone monitoring and its contribution to the nearest violating monitors in Knox and 

Jefferson counties is minimal as it is located downwind from those monitors (Northeast) in a 
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predominately southwesterly wind vectors impacting the monitors. This county is in a rural and agrarian 

environment. 

Jefferson County

Recommendation: Nonattainment

Air Quality Data: Lost Creek Road monitor in violation of the standard (2005-07 design value –

0.084 ppm; 2006-08 design value – 0.081 ppm)

Emissions: 5,128 tons per year of NOx and 4,068 tons per year of VOC (2005 NEI). The majority 

(97%) of the NOx emissions are from mobile sources. VOC emissions are generated from mobile 

sources at (57%). VOC point source emissions account for (17%) and area VOC sources account for 

(26%) of total emissions respectively.

Population: 50,221 people (2007) and 183.3 people per square mile.

Traffic: High VMT (2,305,508 VMT/day). 

Growth: The population grew 13.4% between 2000 and 2007. The VMT grew 8% between 2000 and 

2007.

Meteorology: The winds are climatologically from the southwest, west-southwest, and southsouthwest.

Geography/topography: Almost entirely rural. Ridge and Valley topography covers the entire county.

Jurisdictional boundaries: Entire County stays as part of the existing Morristown MSA.

Level of control of emissions sources: There are no point sources in the county that reported for the 

2005 NEI. Since 2005, the TAPCD requires the application of low NOx burner (LNB) technology at 

new and certain modified sources for NOx control. There is currently no I/M program. Stage I vapor 

recovery is required for gasoline dispensing facilities.

Jefferson County Summary

1) Second highest emissions for both VOC (6.0 TPD) and NOx (8.2 TPD) in the Morristown 

MSA. Sixth highest VOC and fifth highest NOx emissions in the overall Knoxville CBSA.

2) Lost Creek Road monitor in violation of the standard (2006-08 design value – 0.081 ppm). 

3) Second highest population in the Morristown MSA (50,221), and sixth highest in the 

Knoxville CBSA. 

4) Highest annual VMT in the Morristown area (0.84 billion VMT/year) 

5) Meteorological analysis is not supportive of frequent contribution 

6) 6% population growth rate predicted between 2000 and 2007 

7) Located in the current 8-hour ozone maintenance area 

8) Emission reductions have been realized from previous VOC/NOx control requirements 
Tennessee 8-Hour Ozone Nonattainment March 10, 2009

Designations – Nine-Factor Analysis Page 48 of 51

(9) Sevierville Micropolitan Statistical Area

Sevierville, TN Micropolitan Statistical Area (CBSA: 42940)

Principal Cities: Gatlinburg, Pigeon Forge, and Sevierville 

Sevier County (in Tennessee)

The Sevierville, TN Micropolitan Statistical Area (hereinafter referred to as the Sevierville MiSA) 

consists of one TN County. The TAPCD is recommending that this county be classified as 

nonattainment. 

Figure 9 – Sevierville MiSA
Tennessee 8-Hour Ozone Nonattainment March 10, 2009

Designations – Nine-Factor Analysis Page 49 of 51

Sevierville MiSA:

COUNTY BY COUNTY SUMMARY 

The following is a county-by-county summary of the factors that were considered in the 

inclusion/exclusion evaluation for the Sevierville MSA 8-hour ozone nonattainment area. These factors 

include precursor emissions, air quality data, population, urbanization, commuter/traffic patterns 

(―connectivity‖), meteorology, growth, and jurisdictional boundaries. All factors in the applicable EPA 

guidance were considered. 

Sevier County

Recommendation: Nonattainment. 

Air Quality Data: Clingmans Dome () monitor in violation of the standard (2005-07 design value –

0.084 ppm; 2006-08 design value – 0.084 ppm).

Emissions: 559 tons per year of NOx and 2,371 tons per year of VOC (2005 NEI). Mobile source 

emissions generate the majority of NOx (91%) and VOC (97%) of all emissions from this county. 

Population: 83,527 people (2007) and 141.1 people per square mile.

Traffic: High VMT (3,453,187 VMT/day). 

Growth: The population grew 17.4% between 2000 and 2007. The VMT grew 32% between 2000 

and 2007.

Meteorology: The winds are climatologically from the southwest, west-southwest, and southsouthwest.

Geography/topography: Developing touristic area. Ridge and Valley topography covers the western 

portion and Unaka Smoky Mountains cover the eastern portion of the state. The Great Smokies 

National Park () area is located across several counties in Tennessee and North Carolina. 

Jurisdictional boundaries: Entire County by itself.

Level of control of emissions sources: There are no point sources in the county that reported for the 

2005 NEI. Since 2005, the TAPCD requires the application of low NOx burner (LNB) technology at 

new and certain modified sources for NOx control. There is currently no I/M program. Stage I vapor 

recovery is required for gasoline dispensing facilities. Additionally, there are no industrial point 

sources of emissions in the park proper with an unknown portion of each county’s respective mobile 

source contributions for NOx and VOC. Ozone monitoring within the park at high elevations sites 

(Clingmans Dome) demonstrates a profound difference from those at lower elevation (Cades Cove 

monitor: 2005-07 design value – 0.070 ppm; 2006-08 design value – 0.072 ppm). The GSMNP is a 

federally controlled enclave within each of the two respective states. 

Sevier County Summary

1) Seventh highest emissions for VOC (3.5 TPD) and lowest emission of NOx (0.9 TPD) in the 

overall Knoxville CBSA.

2) Clingmans Dome (GSMNP) monitor in violation of the standard (2006-08 design value – 

0.084 ppm).

3) Third highest population in the Knoxville CBSA (83,527). 

4) Second highest annual VMT in the Knoxville CBSA (1.3 billion VMT/year) 

5) Meteorological analysis is not supportive of frequent contribution 

6) 17% population growth rate predicted between 2000 and 2007 

7) Located in the current 8-hour ozone maintenance area 

8) Emission reductions have been realized from previous VOC/NOx control requirements 
Tennessee 8-Hour Ozone Nonattainment March 10, 2009

Designations – Nine-Factor Analysis Page 50 of 51

(10) Meigs County

Meigs County is not part of an MSA. The State of Tennessee recommends that Meigs County be 

designated as nonattainment. This recommendation is based almost entirely on the air monitoring data 

that showed a design value for 2006-8 data that exceeded the new ozone standard of 0.075 ppm.

Meigs County is not part of an MSA. The State of Tennessee recommends that Meigs County be 

designated as nonattainment. This recommendation is based almost entirely on the air monitoring data 

that showed a design value for 2006-8 data that exceeded the new ozone standard of 0.075 ppm.

Figure 10 – Meigs County
Tennessee 8-Hour Ozone Nonattainment March 10, 2009

Designations – Nine-Factor Analysis Page 51 of 51

Meigs County:

COUNTY BY COUNTY SUMMARY 

The following is a county-by-county summary of the factors that were considered in the 

inclusion/exclusion evaluation for the Meigs County 8-hour ozone nonattainment area. These factors 

include precursor emissions, air quality data, population, urbanization, commuter/traffic patterns 

(―connectivity‖), meteorology, growth, and jurisdictional boundaries. All factors in the applicable EPA 

guidance were considered. 

Meigs County

Recommendation: Nonattainment

Air Quality Data: There is one ozone monitor in Meigs County. The ozone monitor shows a design 

value for 2006-8 data that is greater than the new standard of 0.075 ppm.

Emissions: 1,769 tons per year of NOx and 935 tons per year of VOC. The majority (98%) of the 

NOx emissions are from mobile sources. VOC emissions are split primarily between area sources 

(25%) and mobile (75%) sources.

Population: 11,657 people and 56.9 people per square mile.

Traffic: 278,982 DVMT

Growth: The population grew 5.2% between 2000 and 2007. The VMT grew 10% between 2000 and 

2007.

Meteorology: Based on data from Chattanooga, the winds are climatologically from the south and 

north.

Geography/topography: Meigs County is located in the Ridge and Valley region of Tennessee.

Jurisdictional boundaries: Meigs County is currently classified as attainment.

Level of control of emissions sources: There is one point source in Meigs County that reported for 

the 2005 NEI. However, NOx and VOC are not emitted by this source. There is currently no I/M 

program. Stage 1 vapor recovery is required for gasoline dispensing facilities.

Summary: The TAPCD recommends that Meigs County be designated as Nonattainment. This 

designation is based almost entirely on the fact that the ozone monitor shows nonattainment with the 

new standard. Due to the prevailing wind direction from the south, emissions from the Chattanooga 

area are probably causing the high ozone readings in Meigs County. If the ozone monitor in Meigs 

County shows a design value for 2007-9 data that is attaining the standard, then the TAPCD would 

change the recommendation to attainment. Meigs County has a small population and a small 

population density. Meigs County has a moderate growth rate. Meigs County had only one point 

source that reported for the 2005 NEI, and there are only a few minor point sources in the county.