August 22, 2014

Heather McTeer Toney

Regional AdministratorUS EPA Region 4

Atlanta Federal Center

61 Forsyth Street, SW.Atlanta, GA 30303-8909

Revision to South Carolina Air Quality Implementation Plan:Marginal Nonattainment Area SIP Requirements for the York County portion of the

Charlotte-Rock Hill NC-SC Nonattainment Area, 2008 Ozone Standards

Dear Ms. Toney:

The South Carolina Department of Health and Environmental Control (Department) is pleased to submit

the Marginal Nonattainment Area State Implementation Plan (SIP) requirements for the York County

portion ofthe Charlotte-Rock Hill NC-SC 8-hour Ozone Nonattainment Area for the 2008 NAAQS ozone

standards. Within the document is certification that each Clean Air Act 182(a) marginal area requirementhas been met. hi addition, the required emissions inventory is submitted today as Appendix A. TheDepartment submitted a pre-hearing copy of this SIP by electronic mail on May 30, 2014, soliciting EPARegion 4’s comments. These comments were received on June 30, 2014. The Department has considered

EPA suggestions, adopted many ofthem in this SIP package, and replied in a document attached to thispackage as Appendix D.

South Carolina has the necessary legal authority for amending the SIP and carrying out the

responsibilities of the CAA as shown in Appendix B. A public notice to revise the State ImplementationPlan (SIP) was published in the State Register on May 23, 2014, and is included as Appendix C in thispackage. The State Register notice references a 30-day comment period that concluded on June 23, 2014.

A public hearing on this issue was offered on June 30, 2014, however there were no requests for the

hearing, nor were adverse comments received from the public, so the hearing was cancelled in accordance

with 40 CFR 51.102. A notice has been published in the State Register today, August 22, 2014,announcing the amendment of the South Carolina Air Quality SIP with this package (Appendix E.)

The Department has done its best to develop this revision to meet the statutory requirements of the Clean

Air Act absent final implementation guidance and in order to meet the deadline for submission. The

Department believes a proposed implementation rule should have been promulgated concurrently with the

proposed ozone NAAQS. The shortened timefratne between finalizing the 2008 ozone NAAQS

implementation rule and the expected proposal of the 2014 ozone NAAQS further complicates this issue.

As South Carolina, like all states, must be proactive in planning in order to meet statutory deadlines,

EPA’s failure to issue timely guidance makes future guidance burdensome and seemingly capricious.

Therefore, the Department would like to reiterate the need for CAA reform as this is an instance in which

SOUTh CAROLINA DEPARTML\ I OF lIF\l. Iii \\I) ENVIRONMENTAL CONTROL

2600 Bt ill St tedl • Co1umba. SC 29201 • Phone: (0-) 9-3432 . wwwscdhec.gov
Elizabeth A. Dieck

Director of Environmental Affairs

South Carolina Department of Health and Environmental Control

ec: R. Scott Davis Ill, Chief; Air Planning Branch, EPA Region 4

Lynorae Benjamin, Chief; Regulatory Development Section, EPA Region 4

Jane Spanu, Ozone Coordinator, EPA Region 4

Richard Wong, South Carolina Liaison, EPA Region 4

Myra Reece, Chief, BAQ, SCDHEC

Rhonda B. Thompson, Assistant Bureau Chief; BAQ, SCDHEC

Robert J. Brown, Jr., Director, Div. of Air Assessment & Regulation, BAQ, SCDHECL. Nelson Roberts, Jr., Manager, Air Quality Standards & Assessment Section,

I3AQ SCDHEC

Maeve S. R. Mason, Manager, Regulation Development and SIP Management Section, BAQ,

SCDHEC

Bill Harris, Chief, Catawba Indian Nation

David Hooper, RFATS representative, City of Rock Hill, SC

Sheila Holman, Director, North Carolina DENR, Division of Air Quality

CD enclosure:

2008 8-Hour Ozone Marginal Nonattainment Area SIP Requirements

Appendix A: Emissions Inventory and Documentation for York County, SC Portion of

Charlotte-Rock Hill, NC-SC Marginal Nonattaiimient Area (2008 NAAQSOzone Standards)

Appendix B: Copy of Legal Authority.

Appendix C: Notice of Intent to Revise the SIP, SC State Register, May 23, 2014Appendix D: EPA comments on the pre-hcaring submittal of 5/30/14 and Department’s

response

Appendix E: Notice of SIP Revision, SC Slate Register, August 22, 2014

See SC DHEC Deputy Commissioner Robert W. King’s comments at the July 31, 2012, Whitfield Clean Air Act Forum:

http://energvconimerce.house.ov!si tes/republicans.enenwcornnierce.houscgov/files/analysis/CAAforumJ2O 12073 1/Kitj.gpjf
Marginal Nonattainment Area SIP Requirements for 

York County, SC Portion of Charlotte-Rock Hill, 

North Carolina-South Carolina Nonattainment Area 

August 22, 2014 
Marginal Nonattainment Area SIP Requirements for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal 

Nonattainment Area 

August 22, 2014 

Page 2 of 15 

South Carolina 

Marginal Air Quality Implementation Plan 

For the York County, South Carolina Portion of the Charlotte-Rock Hill, NC-SC 

8-Hour Ozone Nonattainment Area 

Ground level ozone, one of the principal components of “smog,” is a serious air pollutant that harms 

human health and the environment. Ozone is generally not directly emitted to the atmosphere; rather it is 

formed in the atmosphere by photochemical reactions between volatile organic compounds (VOC), 

oxides of nitrogen (NOX), and carbon monoxide (CO) in the presence of sunlight. High levels of ozone 

can damage the respiratory system and cause breathing problems, throat irritation, coughing, chest pains, 

and greater susceptibility to respiratory infection. High levels of ozone also cause serious damage to 

forests and agricultural crops, resulting in economic losses to logging and farming operations. 

On April 30, 2012, the Environmental Protection Agency (EPA) issued final area designations for the 

2008 ozone National Ambient Air Quality Standard (NAAQS). (77 FR 30144) At that time, all of South 

Carolina was classified as unclassifiable/attainment with the exception of a portion of York County. 

Although the monitor in York County was meeting and continues to meet the standard, EPA included the 

eastern, urbanized area of York County in the Charlotte-Rock Hill, NC-SC nonattainment area (York 

NAA) because of its belief that emissions in that area contributed to violations at monitors in the 

Charlotte area.. This is the same portion of York County that was designated in 2004 as nonattainment for 

the 1997 ozone standard, with the exception of the Catawba Indian Nation Reservation. (69 FR 23857) 

The York NAA was designated marginal for the 2008 ozone NAAQS and as such South Carolina has 

already implemented NAA requirements in the area due to its 1997 moderate designation. 

Per Clean Air Act (CAA) Section 182(a), Marginal Nonattainment Area Requirements which apply to the 

York NAA include nonattainment new source review (NSR), emissions inventory, emissions statements, 

etc. The Department has had lengthy dialogue with EPA Region 4 staff and it has been brought to our 

attention that many if not all of these SIP requirements can be met as a certification of 

completion/implementation. For the reasons below, the Department believes each marginal area 

requirement in the Clean Air Act has been or will be met. 

The Department also recognizes that the 2008 Ozone SIP Requirements Rule (Proposed June 06, 2013) is 

not expected to be finalized until after the date of submittal of this document. Designations were effective 

July 20, 2012, and emission inventories for nonattainment areas are due July 20, 2014. States will not 

have time to complete the work required for SIPs if they wait for EPA to finalize the SIP Requirements 

Rule. 

The Department is moving forward with certification of the associated marginal area SIP requirements for 

the York County portion of the Charlotte-Rock Hill, NC-SC Nonattainment area for the 2008 ozone 

NAAQS based on the CAA in the absence of EPA guidance in an attempt to meet statutory deadlines. 

This is an example of a critical need for Clean Air Act reform (See SC DHEC Deputy Commissioner 

Robert W. King comments at July 31, 2012, Whitfield Clean Air Act Forum: 

http://energycommerce.house.gov/sites/republicans.energycommerce.house.gov/files/analysis/CAAforum

/20120731/King.pdf). 
Marginal Nonattainment Area SIP Requirements for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal 

Nonattainment Area 

August 22, 2014 

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Clean Air Act Section 182(a)(1): Inventory 

Emissions Inventory reporting is required by SC Regulation 61-62.1, Section III, and condition 4.B.6 

contained in Part 4.B of a facility’s Title V permit if the permit was issued before 10/09/2007; condition 

4.6 contained in Part 4 of a facility’s Title V permit if the permit was issued between 10/09/2007, and 

10/14/2008; or condition 4.3 contained in Part 4 of a facility’s Title V permit if the permit was issued 

after 10/14/2008. Section III, Emissions Inventory, has been in SC regulatory text since 1983 and has 

been updated/amended with relative frequency. Section III was amended in its entirety in 2005 to 

streamline emissions inventory reporting requirements and for consistency with the Consolidated 

Emissions Reporting Rule (CERR) which was published in the Federal Register on June 10, 2002 (67 FR 

39602). 

The Department, per the Air Emissions Reporting Requirements (AERR) Rule (73 FR 76539), met 2012 

reporting requirements for the York NAA utilizing 2011 data. On March 4, 2013, in a letter addressed to 

Ms. Myra Reece, Richard A. Wayland stated that our “agency’s emissions data submission is 

‘complete.’” See Item 1 below. While the Department understands the difference between the AERR 

submittal and the requirements for a partial county emission inventory for the nonattainment area, the 

Department does not see the need for marginal area emissions inventory reporting as no modeling is 

required to be redesignated to attainment. Any emissions inventory reporting for marginal areas outside of 

what has already been collected into the National Emissions Inventory (NEI) seems to be redundant, 

burdensome, and unnecessary. The Department expressed this concern in its comments on the SIP 

Requirements Rule. However, absent a final SIP Requirements Rule and in consideration of EPA Region 

4’s comments on the State’s pre-hearing SIP package, the Department has provided this information. 

The Department has resubmitted the data from the 2012 AERR inventory (2011 base year data) and the 

methodologies used to obtain these data. These documents are included herein as Appendix A. The 

Department certifies that the requirements of CAA 182(a)(1) which requires a comprehensive, accurate, 

current inventory of actual emissions from all sources within 2 years after the date of the enactment of the 

CAA Amendments of 1990 is met by the emissions inventory submission contained in Appendix A. 

Clean Air Act Section 182(a)(2)(A): Reasonable Available Control Technology Corrections

This requirement applies (per EPA) only to pre-1990 ozone issues. Since South Carolina had none, 

section 182(a)(2)(A) does not apply and is referred to here only for completeness. 

Clean Air Act Section 182(a)(2)(B): Savings Clause for Vehicle Inspection and Maintenance 

This requirement applies (per EPA) only to pre-1990 ozone issues. Since South Carolina had none, 

section 182(a)(2)(B) does not apply and is referred to here only for completeness. 

Clean Air Act Section 182(a)(2)(C): Permit Programs 

The Department has met the requirement of CAA Section 182(a)(2)(C) as outlined in 76 FR 36875 which 

fully approved South Carolina’s Nonattainment NSR program. The Department has a SIP-approved 

nonattainment new source review permitting program at R. 61-62.5, Standard No. 7.1 which governs any 

new construction or modification of an existing facility in a nonattainment area subject to requirements 
Marginal Nonattainment Area SIP Requirements for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal 

Nonattainment Area 

August 22, 2014 

Page 4 of 15 

for new source review. EPA approved the nonattainment new source review permitting program into 

South Carolina’s SIP on June 2, 2008 (73 FR 31369) and June 23, 2011 (76 FR 36875) 

Clean Air Act Section 182(a)(3)(A): Periodic Inventory – General Requirement 

As noted under the portion of this letter regarding CAA Section 182(a)(1), Regulation 61-62.1, Section 

III, Emissions Inventory, and the Air Emissions Reporting Requirements (AERR) Rule (73 FR 76539) 

requirements lay out the framework for periodic emissions inventory reporting. The Department will meet 

the requirement of CAA Section 182 (a)(3)(A) with 2014 data as part of the 2014 data submission. 

EPA Region 4’s September 24, 2013 comment letter states that EPA is currently developing guidance on 

this portion of the 2008 ozone NAA SIP Requirements. As of this document’s date of submittal, EPA’s 

guidance has not been published or otherwise disseminated. 

Clean Air Act Section 182(a)(3)(B): Periodic Inventory – Emissions Statements 

South Carolina withdrew its August 31, 2007, attainment demonstration for 1997 8-Hour ozone NAAQS 

on December 22, 2008, and resubmitted it on April 29, 2010. On March 7, 2012, EPA determined that the 

bi-state Charlotte Area attained the 1997 8-hour ozone NAAQS and consequently, SC withdrew its 

attainment demonstration on January 12, 2012 pursuant to 40 CFR 51.918 (the RFP, emissions 

statements, and emissions inventory submittals, however, were not withdrawn). 

The April 29, 2010, SIP revision states that the Department has the authority to require annual emissions 

statements and is taking specific action to comply with the emissions statement requirements for any class 

or category of stationary sources that emits 25 tons per year or more of VOCs or NOX. The Department 

‘‘has and is requiring, receiving, and archiving’’ emissions statements, through Regulation 61-62.1, 

Section III. The Department requires reporting through Satellite i-STEPS or the form found at: 

http://www.dhec.sc.gov/Library/d-1216.pdf . 

EPA evaluated the Department’s April 29, 2010, SIP revision as it relates to the emissions statement 

requirements and made the determination that the requirements of CAA section 182(a)(3)(B) have been 

met. EPA published a Direct Final Rule on June 25, 2012 (77 FR 37812), approving the Department’s 

emissions statement SIP submittal: 

http://www.gpo.gov/fdsys/pkg/FR-2012-06-25/pdf/2012-14955.pdf.

Additionally, the Department took action in the 2013 General Assembly Package (South Carolina State 

Register Document No. 4388) to put Emissions Statement requirements for ozone nonattainment areas 

into SC regulatory text in an act of good customer service—not to fulfill CAA Section 182(a)(3)(B) 

requirements as these requirements have previously been met. This amendment to Regulation 61-62.1, 

Section III became law on June 27, 2014. 

The Department certifies that the Emissions Statement requirements of CAA Section 182(a)(3)(B) have 

been met per the SIP approval published by EPA in 77 FR 37812. The Department did not stop collecting 

emissions statements from facilities between the 1997 and the 2008 ozone NAAQS nonattainment 

designations as the York nonattainment area had already been designated nonattainment for the 2008 

ozone NAAQS (April 2012) at the time EPA approved the Department’s York redesignation request for 

the 1997 standard (77 FR 75862, December 26, 2012). Annual emissions statement collection for the 

York nonattainment has been ongoing as the 1997 and the 2008 ozone NAAQS timelines overlap 

significantly (as may occur with the expected ozone NAAQS revision). 
Marginal Nonattainment Area SIP Requirements for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal 

Nonattainment Area 

August 22, 2014 

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Clean Air Act Section 182(a)(4): General Offset Requirements 

On December 31, 2002 (67 FR 80185) and October 27, 2003 (68 FR 61247), the EPA finalized revisions 

governing NSR program mandated by parts C and D of Title I of the CAA. The major NSR program 

contained in parts C and D of Title I of the CAA is a preconstruction review and permitting program 

applicable to new or modified major stationary sources of air pollutants regulated under the CAA. In 

areas not meeting the health-based NAAQS, the program is implemented under the requirements of part 

D of title I of the CAA. This is referred to as the nonattainment NSR program. In areas meeting the 

NAAQS (attainment areas), the NSR requirements under part C of Title I apply. This is referred to as the 

Prevention of Significant Deterioration (PSD) program. Collectively, these programs are commonly 

referred to as the major NSR program. 

On July 1, 2005, the Department submitted a final SIP amendment to then EPA Region 4 Regional 

Administrator, James I. Palmer which was conditionally approved via 73 FR 31369. On April 17, 2009, 

the Department submitted a SIP revision to EPA to meet the requirements of the conditional approval of 

SC’s Nonattainment New Source Review program. On June 23, 2011, EPA took final action to approve 

SC’s Nonattainment New Source Review program in full (76 FR 36875). Ozone nonattainment area 

emission offsetting ratios (to include marginal area offset requirements) have been adopted into SC’s 

regulatory text at Regulation 61-62.5, Standard 7.1, Nonattainment New Source Review, paragraph 

(d)(1)(C)(vii)(b). 

The Department believes 76 FR 36875 which approved SC’s Nonattainment New Source Review 

program in full meets the requirements of CAA Section 182(a)(4). 

Clean Air Act Section 176(c): Transportation Conformity 

The purpose of transportation conformity is to ensure that Federal transportation actions occurring in 

nonattainment and maintenance areas do not hinder the area from attaining and maintaining the 8-hour 

ozone standard. The level of emissions estimated by the Rock Hill-Fort Mill Area Transportation Study 

(RFATS) for the Transportation Implementation Plan (TIP) and Long Range Transportation Plan (LRTP) 

must not exceed the motor vehicle emission budget (MVEB) for the area (approved December 26, 2012 

in 77 FR 75862). Item 2 below is a letter from Yvette G. Taylor (Federal Transit Administration Regional 

Administrator) and Robert L. Lee (Federal Highway Administrations Division Administrator), finding the 

Rock Hill-Fort Mill Area Transportation Study (RFATS) 2030 LRTP and FY 2014-2019 TIP in 

conformity with the purpose of the SIP in accordance with 40 CFR 93. 

The Department believes this conformity determination meets the York County nonattainment area’s 

transportation conformity requirements for the 2008 ozone NAAQS. 
Marginal Nonattainment Area SIP Requirements for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal 

Nonattainment Area 

August 22, 2014 

Page 6 of 15 

Item 1: 

March 4, 2013 

Letter from Richard A. Wayland to Ms. Myra Reece 
Marginal Nonattainment Area SIP Requirements for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal 

Nonattainment Area 

August 22, 2014 

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Marginal Nonattainment Area SIP Requirements for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal 

Nonattainment Area 

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Nonattainment Area 

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Nonattainment Area 

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Nonattainment Area 

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Item 2: 

June 07, 2013 

RFATS 2035 LRTP and FY 2014-2019 TIP 

Conformity Determination 
Marginal Nonattainment Area SIP Requirements for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal 

Nonattainment Area 

August 22, 2014 

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Marginal Nonattainment Area SIP Requirements for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal 

Nonattainment Area 

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Nonattainment Area 

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Appendix A 

Emissions Inventory and Documentation for 

York County, SC Portion of Charlotte-Rock Hill, North Carolina-South Carolina Marginal 

Nonattainment Area (2008 NAAQS Ozone Standards) 

Prepared by 

South Carolina Department of Health and Environmental Control 

Bureau of Air Quality 

August 22, 2014
Emissions Inventory and Documentation for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal Nonattainment 

Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 2 

TABLE OF CONTENTS 

LIST OF TABLES ........................................................................................................................ 3 

LIST OF ACRONYMS ................................................................................................................ 4 

PART I: EMISSIONS INVENTORY SUMMARY................................................................... 5 

I. INTRODUCTION.............................................................................................................. 5 

II. BASELINE YEAR (2011) INVENTORIES..................................................................... 5 

PART II: POINT SOURCE EMISSIONS INVENTORY DOCUMENTATION .................. 5 

I. INTRODUCTION.................................................................................................................. 5

II. 2011 INDUSTRIAL POINT SOURCE INVENTORY DEVELOPMENT...................... 6 

III. 2011 AIRPORT POINT SOURCE INVENTORY DEVELOPMENT........................... 6 

IV. DETAILED 2011 ACTUAL POINT SOURCE INVENTORY ...................................... 8 

PART III: AREA, NONROAD MOBILE, AND EVENT SOURCES EMISSIONS 

INVENTORY DOCUMENTATION ........................................................................................ 11 

I. INTRODUCTION AND SCOPE........................................................................................ 11 

II. OVERALL METHODOLOGY ........................................................................................ 11 

A. SOURCE CATEGORY IDENTIFICATION .............................................................. 11 

B. NONPOINT SOURCE EMISSION ESTIMATION APPROACH............................ 11 

C. NONROAD SOURCE EMISSION ESTIMATION APPROACH ............................ 12 

III. 2011 NONPOINT SOURCE INVENTORY ................................................................... 12 

A. NONPOINT CATEGORY METHODOLOGIES..................................................... 16 

B. NON-POINT AVERAGE SUMMER DAY EMISSIONS ESTIMATE.................. 23 

V. 2011 EVENTS ..................................................................................................................... 32 

PART IV: ONROAD MOBILE SOURCE EMISSIONS INVENTORY 

DOCUMENTATION.................................................................................................................. 33 

I. INTRODUCTION............................................................................................................ 33 

II. ONROAD MOBILE SOURCE INVENTORY DEVELOPMENT .......................... 33 

A. YORK COUNTY 2011 VEHICLE POPULATION INPUTS.................................. 34 

B. YORK COUNTY 2011 VEHICLE MILES TRAVELED (VMT) INPUTS ........... 34 

C. AVERAGE SUMMER DAY EMISSIONS ESTIMATE ........................................ 35
Emissions Inventory and Documentation for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal Nonattainment 

Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 3 

LIST OF TABLES 

Table 1: 2011 Emissions Summary for the NAA of York County, SC, tons per average summer day .......5

Table 2: Biogenic Emissions Summary for the NAA of York County, SC, tons/average summer day .......5

Table 3: Source Classification codes for the aircraft sector in the 2011 NEI ...............................................7

Table 4: 2011 Actual Point Source Emissions for NAA of York County, SC .............................................8

Table 5: 2011 Actual Nonpoint Source Emissions for NAA of York County, SC.....................................12

Table 6: Source Classification Codes used in the Commercial Cooking sector .........................................16

Table 7: Assumptions Used to Estimate Commercial/Institutional Sector Stationary Source Distillate Fuel 

Consumption.......................................................................................................................................19

Table 8: SCCs in the Residential Fuel Combustion Sectors (except Wood) in the 2011 NEI....................20

Table 9: SCCs in the Residential Wood Combustion Sector in the 2011 NEI ...........................................21

Table 10: 2011 Actual Nonroad Source Emissions for NAA of York County, SC....................................24

Table 11: 2011 Actual Event Source Emissions for NAA of York County, SC.........................................32

Table 12: York County, SC 2011 Vehicle Population................................................................................34

Table 13: York County, SC 2011 Vehicle Miles Traveled.........................................................................35
Emissions Inventory and Documentation for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal Nonattainment 

Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 4 

LIST OF ACRONYMS 

Acronym Definition 

AERR Air Emissions Reporting Requirements 

AVG Average 

CDB County Data Base 

CMV Commercial Marine Vessel 

CNG Compressed Natural Gas 

Department South Carolina Department of Health and Environmental Control 

DMV South Carolina Department of Motor Vehicles 

EDMS Emissions and Dispersion Modeling System 

EGU (Point) Electric Generating Unit 

EIA Energy Information Administration 

EIIP Emissions Inventory Improvement Program 

EIS Emissions Inventory System 

EPA U.S. Environmental Protection Agency 

EPA-OAQPS EPA Office of Air Quality Planning and Standards 

ERTAC Eastern Regional Technical Advisory Committee 

FAA Federal Aviation Administration 

GA General Aviation 

GHG Greenhouse Gas 

GSE Ground Support Equipment 

HAP Hazardous Air Pollutant 

HPMS Highway Performance Management System 

ICE Internal Combustion Engine 

LPG Liquid Petroleum Gas 

LTO Landing and Takeoff 

MACT Maximum Achievable Control Technology 

MOVES Motor Vehicle Emission Simulator 

MSW Municipal Solid Waste 

MW Megawatt 

NAA Nonattainment Area 

NAAQS National Ambient Air Quality Standards 

NAICS North American Industry Classification System 

NCD NMIM County Database 

NEI National Emissions Inventory 

NG Natural Gas 

NMIM National Mobile Inventory Model 

NOx Nitrogen Oxides 

PFC Portable Fuel Container 

PM Particulate Matter 

QA Quality Assurance 

SCC Source Classification Code 

SEDS State Energy Data System 

SF2 SMARTFIRE2 estimation system 

SIC Standard Industrial Classification 

VMT Vehicle Miles Traveled 

VOC Volatile Organic Compounds 

WLF Wild Land Fire 
Emissions Inventory and Documentation for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal Nonattainment 

Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 5 

PART I: EMISSIONS INVENTORY SUMMARY

I. INTRODUCTION 

The following section contains emission summary tables for the nonattainment area (NAA) of York 

County, SC, which is part of the Charlotte-Rock Hill, NC-SC Nonattainment Area. The inventory data is 

for calendar year 2011. 

II. BASELINE YEAR (2011) INVENTORIES 

The emissions are reported as tons/average summer day of pollutant. In accordance with the requirements 

of EPA’s, Emissions Inventory Guidance for Implementation of Ozone and Particulate Matter National 

Ambient Air Quality Standards (NAAQS) and Regional Haze Regulations November 2005, the only 

pollutants reported are Nitrogen Oxides (NOx) and Volatile Organic Compounds (VOC) and emissions 

are summed as tons/average summer day for the year 2011. 

Table 1: 2011 Emissions Summary for the NAA of York County, SC, tons per average summer day 

SECTOR YORK COUNTY, SC NAA 2011 

NOx TONS/AVG SUMMER DAY 

YORK COUNTY, SC NAA 2011 

VOC TONS/AVG SUMMER 

DAY 

Point 4.71 4.02 

Nonpoint 0.93 6.93 

Events 0.04 0.42 

Nonroad Mobile 2.63 1.78 

Onroad Mobile 11.43 5.30 

Total 19.74 18.50 

Table 2: Biogenic Emissions Summary for the NAA of York County, SC, tons/average summer day 

County NOx VOC 

 York, SC 0.17 26.31 

PART II: POINT SOURCE EMISSIONS INVENTORY DOCUMENTATION 

I. INTRODUCTION 

The following sections contain stationary point inventory documentation for the NAA of York County, 

SC, which is part of the Charlotte-Rock Hill, NC-SC Nonattainment Area. The inventory data is for 

calendar year 2011. 

The York County, SC emissions inventory was developed by the Department, with some additional 

sources and emissions supplied by EPA, as part of the 2011 NEI effort. The 2011 EI was developed per 

the Air Emissions Reporting Requirements (AERR) rule. Emission estimates were calculated in tons per 

year, and converted to tons per average summer day for this submittal. Section II documents the 

Department-developed 2011 point inventory. Section II only includes the Title V permitted industrial 

sources; Section III addresses additional point sources calculated by EPA as part of the 2011 NEI. These 

sources include airport and railyards, which used to be captured within the nonroad mobile category. 

However, there are no railyards in York County, SC, so that category will not be addressed in this 

document. 
Emissions Inventory and Documentation for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal Nonattainment 

Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 6 

II. 2011 INDUSTRIAL POINT SOURCE INVENTORY DEVELOPMENT 

This section details the development of the 2011 base year inventory for industrial point sources. The 

development of the point source inventory by the Department began with the collection of actual 2011 

process data and emission estimates from all stationary sources, in the NAA of York County, that are 

subject to Title V permitting program. Sources required to send in inventory data are determined in 

accordance with the Air Emissions Reporting Rule (AERR). Every 2011 inventory received was reviewed 

by the Department’s staff to ensure that the correct procedures were followed in developing the inventory 

and to ensure that appropriate emission factors were used. The Department’s staff rely on EPA-approved 

methodology and use preferred methods over less preferred methods where available when performing or 

accepting calculations. For example, Department approved stack testing emission factors are preferred 

over AP-42 emission factors; when available, continuous emission monitor data are used preferentially 

over stack test data. The order of preferred methods from best to least desirable are 1) mass balance 

calculations, 2) continuous emissions monitor data, 3) Bureau approved and reviewed stack test emission 

factors, 4) AP-42 or FIRE Emission factors, 5) in-house stack test, and 6) other. 

The Department submitted the 2011 point data to the EPA as part of the 2011 NEI effort. The EPA did 

make some amendments to the Department’s data, but primarily to “gap fill” pollutants or sources not 

provided by S/L/T agencies. 

To estimate the average summer day emissions for industrial point sources, the Department used monthly 

throughput percentages provided by the facilities. If no monthly throughput percentages were provided 

by the facility, the Department assumed an equal percentage for all twelve months. The throughput 

percentage for months May, June, July, August, and September were added together to get the percentage 

of the throughput assumed to have been used during the ozone season. This ozone season percentage was 

then multiplied by the annual emissions to get an ozone season emission estimate. The ozone season 

emission estimate was then divided by the number of days in the 2011 ozone season, 153 days, to get an 

estimate of the average summer day emissions. 

III. 2011 AIRPORT POINT SOURCE INVENTORY DEVELOPMENT 

 

The aircraft sector includes all aircraft types used for public, private, and military purposes. This includes 

four types of aircraft: (1) Commercial, (2) Air Taxis (AT), (3) General Aviation (GA), and (4) Military. A 

critical detail is whether each aircraft is turbine- or piston-driven, which allows the emissions estimation 

model to assign the fuel used, jet fuel or aviation gas, respectively. The fraction of turbine- and pistondriven aircraft is either collected or assumed for all aircraft types. Commercial aircraft include those used 

for transporting passengers, freight, or both. Commercial aircraft tend to be larger aircraft powered with 

jet engines. Air Taxis carry passengers, freight, or both, but usually are smaller aircraft and operate on a 

more limited basis than the commercial aircraft. General Aviation includes most other aircraft used for 

recreational flying and personal transportation. Finally, military aircraft are associated with military 

purposes, and they sometimes have activity at non-military airports. 

The national AT and GA fleet includes both jet- and piston-powered aircraft. Most of the Air Taxi and 

General Aviation fleet are made up of larger piston-powered aircraft, though smaller business jets can 

also be found in these categories. Military aircraft cover a wide range of aircraft types such as training 

aircraft, fighter jets, helicopters, and jet-powered and piston-powered planes of varying sizes. 

The 2011 NEI also includes emission estimates for aircraft auxiliary power units (APUs) and aircraft 

ground support equipment (GSE) typically found at airports, such as aircraft refueling vehicles, baggage 

handling vehicles, and equipment, aircraft towing vehicles, and passenger buses. 
Emissions Inventory and Documentation for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal Nonattainment 

Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 7 

This sector can include the SCCs listed in Table 3 below: 

Table 3: Source Classification codes for the aircraft sector in the 2011 NEI 

SCC 

Data 

Category SCC Description 

EPA 

estimates 

2275001000 Point Mobile Sources; Aircraft; Military Aircraft; Total X 

2275020000 Point Mobile Sources; Aircraft; Commercial Aircraft; Total: All Types X 

2275050011 Point Mobile Sources; Aircraft; General Aviation; Piston X 

2275050012 Point Mobile Sources; Aircraft; General Aviation; Turbine X 

2275060011 Point Mobile Sources; Aircraft; Air Taxi; Piston X 

2275060012 Point Mobile Sources; Aircraft; Air Taxi; Turbine X 

2260008005 Point Mobile Sources; Off-highway Vehicle Gasoline 2-Stroke; 

Aircraft Ground Support Equipment X 

2265008005 Point Mobile Sources; Off-highway Vehicle Gasoline 4-Stroke; 

Aircraft Ground Support Equipment X 

2267008005 Point Mobile Sources; LPG; Aircraft Ground Support Equipment X 

2268008005 Point Mobile Sources; CNG; Aircraft Ground Support Equipment X 

2270008005 Point Mobile Sources; Off-highway Vehicle Diesel; Aircraft Ground 

Support Equipment X 

2275070000 Point Mobile Sources; Aircraft; Aircraft Auxiliary Power Total X 

EPA developed emissions estimates associated with aircrafts’ landing and takeoff (LTO) cycle. The cycle 

begins when the aircraft approaches the airport on its descent from cruising altitude, lands, taxis to the 

gate, and idles during passenger deplaning. It continues as the aircraft idles during passenger boarding, 

taxis back out onto the runway for subsequent takeoff, and ascent (climb out) to cruising altitude. Thus, 

the five specific operating modes in an LTO are (1) Approach, (2) Taxi/idle-in, (3) Taxi/idle-out, (4) 

Takeoff, and (5) Climbout. The LTO cycle provides a basis for calculating aircraft emissions. During 

each mode of operation, an aircraft engine operates at a fairly standard power setting for a given aircraft 

category. Emissions for one complete cycle are calculated using emission factors for each operating mode 

for each specific aircraft engine combined with the typical period of time the aircraft is in the operating 

mode. 

Refer to Development of 2011 Aircraft Component for National Emissions Inventory, June 17, 2013 for 

more detail on preparing the LTO data and running the Emissions and Dispersion Modeling System 

(EDMS). 

Emissions for GSE and APUs associated with aircraft-specific activity were also estimated by EDMS, 

using the assumptions and defaults incorporated in the model. EPA’s NONROAD model also estimates 

GSE emissions, but that method is deemed less accurate than EDMS’s LTO-based estimates and an EIS 

critical error check prohibits GSE SCCs from being submitted to the non-road equipment data category 

which would duplicate emissions. 

The Department reviewed the EPA inputs into EDMS and the emissions for York Co, SC but no changes 

were made to the EPA data for 2011 NEI v1. Only airports found within the NA area of York County 

were included in this submittal. 
Emissions Inventory and Documentation for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal Nonattainment 

Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 8 

To estimate the average summer day emission for the airport related point emissions, the Department 

started with the EPA generated 2011 annual emissions. The Department had no actual activity data from 

these sources, so the exact amount of activity that occurred during the ozone season months could not be 

ascertained. Therefore, it was assumed that these sources operated at a constant rate throughout all 

months of the year (8.333% activity for each month). If each month of the year contributed 8.333% of 

the activity, the percent of activity for the 5 ozone season months would be 41.66%. Since there are 153 

days in the 2011 ozone season, the 41.66% can be divided by 153 to get an estimate of activity for an 

average ozone season day. This gives a result of 0.272% activity for each ozone season day. The 

estimated ratio of 0.00272 was multiplied by the annual emissions to estimate the average summer day 

emissions. 

 

IV. DETAILED 2011 ACTUAL POINT SOURCE INVENTORY 

 Table 4 details the final 2011 actual base year inventory for the NAA of York County, SC. All 

values are in tons per average summer day. 

Table 4: 2011 Actual Point Source Emissions for NAA of York County, SC 

Point 

Source 

Type Facility Name SCC Unit ID Process ID 

NOX

tons/average 

summer day 

VOC tons/ 

average 

summer day 

Industrial Cytec Carbon Fibers Rock Hill 30102499 1 3 0.034899059 0.033080382 

Industrial Cytec Carbon Fibers Rock Hill 30102499 1 5 0.034899059 0.033080382 

Industrial Cytec Carbon Fibers Rock Hill 30102499 1 7 0.034899059 0.033080382 

Industrial Cytec Carbon Fibers Rock Hill 30102499 1 9 0.011367745 0.00099128 

Industrial Cytec Carbon Fibers Rock Hill 30102499 1 10 0.011367745 0.00099128 

Industrial Cytec Carbon Fibers Rock Hill 30102499 1 11 0.011367745 0.00099128 

Industrial Cytec Carbon Fibers Rock Hill 30102499 1 13 0 0.000506408 

Industrial Cytec Carbon Fibers Rock Hill 

30102499 

 

IAS 1 0 8.16667E-07 

Industrial Cytec Carbon Fibers Rock Hill 39000699 1 1 0 0 

Industrial Cytec Carbon Fibers Rock Hill 39000699 1 2 0.003735 0.000205425 

Industrial Cytec Carbon Fibers Rock Hill 39000699 1 4 0.00249 0.00013695 

Industrial Cytec Carbon Fibers Rock Hill 39000699 1 6 0.00249 0.00013695 

Industrial Cytec Carbon Fibers Rock Hill 39000699 1 8 0.003028415 0.000166564 

Industrial Cytec Carbon Fibers Rock Hill 39000699 1 12 0.00083 0.00004565 

Industrial Cytec Carbon Fibers Rock Hill 39000699 N01 1 0.002075 0.000114125 

Airport Piedmont Medical Center 2275050011 (blank) (blank) 1.6327E-06 3.77968E-06 

Airport Piedmont Medical Center 2275050012 (blank) (blank) 1.45671E-05 3.10239E-05 

Industrial RESOLUTE FP US INC 10200401 8 3 0.022595724 0.000365377 

Industrial RESOLUTE FP US INC 10200401 8 8 0.036062639 0.000583141 

Industrial RESOLUTE FP US INC 10200402 7 3 0.022619462 0.000115153 

Industrial RESOLUTE FP US INC 10200402 7 5 0.019379827 9.86615E-05 

Industrial RESOLUTE FP US INC 10200405 8 1 0.050851111 0.001022233 

Industrial RESOLUTE FP US INC 10200601 7 7 0.00057308 1.12564E-05 

Industrial RESOLUTE FP US INC 10200601 8 4 0.020387621 0.000400472 

Industrial RESOLUTE FP US INC 10200601 8 9 0.023633136 0.000464223 

Industrial RESOLUTE FP US INC 10200603 6 5 0.002119803 0.00011659 
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Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 9 

Point 

Source 

Type Facility Name SCC Unit ID Process ID 

NOX

tons/average 

summer day 

VOC tons/ 

average 

summer day 

Industrial RESOLUTE FP US INC 10200603 6 7 0.092137694 0.00506758 

Industrial RESOLUTE FP US INC 10200604 8 2 0.002150556 7.90288E-05 

Industrial RESOLUTE FP US INC 10200901 8 5 0.661551722 0.051119794 

Industrial RESOLUTE FP US INC 10200901 8 10 0.916988722 0.070858083 

Industrial RESOLUTE FP US INC 10201002 6 8 0 0 

Industrial RESOLUTE FP US INC 10201301 6 9 0.000707778 2.72222E-05 

Industrial RESOLUTE FP US INC 30700101 2 3 0 0.030894444 

Industrial RESOLUTE FP US INC 30700103 7 1 0 0.007595 

Industrial RESOLUTE FP US INC 30700105 7 8 0.008884299 0.011105387 

Industrial RESOLUTE FP US INC 30700105 7 9 0.017048162 0.021310209 

Industrial RESOLUTE FP US INC 30700106 7 10 0.329416111 0.007849419 

Industrial RESOLUTE FP US INC 30700107 2 6 0 2.71242E-05 

Industrial RESOLUTE FP US INC 30700110 7 4 0.666372778 0.062190256 

Industrial RESOLUTE FP US INC 30700110 7 6 1.101846667 0.119342222 

Industrial RESOLUTE FP US INC 30700114 3 2 0 0.177120915 

Industrial RESOLUTE FP US INC 30700115 4 1 0 0.00089404 

Industrial RESOLUTE FP US INC 30700117 2 4 0.550919281 0.234841176 

Industrial RESOLUTE FP US INC 30700121 9 1 0 1.193607333 

Industrial RESOLUTE FP US INC 30700122 7 11 0 0.051041667 

Industrial RESOLUTE FP US INC 30700199 2 7 0 0.016518627 

Industrial RESOLUTE FP US INC 30700199 2 8 0 0.002305556 

Industrial RESOLUTE FP US INC 30700199 6 4 0 0.121656111 

Industrial RESOLUTE FP US INC 30700199 7 2 0 0.008901667 

Industrial RESOLUTE FP US INC 30700199 9 2 0.000108889 0.000471282 

Industrial RESOLUTE FP US INC 30700199 10 1 0 0.166627222 

Industrial RESOLUTE FP US INC 30700234 2 5 0 0.004665359 

Industrial RESOLUTE FP US INC 30701220 5 1 0 0.523946111 

Industrial RESOLUTE FP US INC 30701399 6 1 0 0.061222778 

Industrial RESOLUTE FP US INC 30701399 6 2 0 0.098190556 

Industrial RESOLUTE FP US INC 30701399 6 3 0 0.144223333 

Industrial RESOLUTE FP US INC 39999996 IA 2 0 0.043538784 

Industrial RESOLUTE FP US INC 39999996 IA 3 0 0.014322327 

Industrial RESOLUTE FP US INC 39999996 IA 4 0 0.032919569 

Industrial RESOLUTE FP US INC 39999996 IA 5 0 0.143114353 

Industrial RESOLUTE FP US INC 39999996 IA 6 0 0.356587817 

Industrial RESOLUTE FP US INC 39999996 IA 7 0 0.123427961 

Industrial RESOLUTE FP US INC 40688801 IA 8 0 0.00547298 

Industrial RESOLUTE FP US INC 50300107 8 6 1.63333E-05 0 

Industrial RESOLUTE FP US INC 50300107 8 11 2.17778E-05 0 

Airport Rock Hill/York Co/Bryan 2275001000 (blank) (blank) 1.07554E-05 9.66008E-05 
Emissions Inventory and Documentation for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal Nonattainment 

Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 10 

Point 

Source 

Type Facility Name SCC Unit ID Process ID 

NOX

tons/average 

summer day 

VOC tons/ 

average 

summer day 

Airport Rock Hill/York Co/Bryan 2275050011 (blank) (blank) 0.001339323 0.003100511 

Airport Rock Hill/York Co/Bryan 2275050012 (blank) (blank) 0.002585183 0.005505737 

Airport Rock Hill/York Co/Bryan 2275060011 (blank) (blank) 9.39158E-06 1.00857E-05 

Airport Rock Hill/York Co/Bryan 2275060012 (blank) (blank) 0.000165033 0.0002141 

Airport YORK 2275050011 (blank) (blank) 6.18888E-05 0.000143271 

Airport YORK 2275050012 (blank) (blank) 0.000198505 0.000422759 

NOX

tons/average 

summer day

VOC tons/ 

average 

summer day

Grand Total 4.71 4.02 
Emissions Inventory and Documentation for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal Nonattainment 

Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 11 

PART III: AREA, NONROAD MOBILE, and EVENT SOURCES EMISSIONS INVENTORY 

DOCUMENTATION 

I. INTRODUCTION AND SCOPE 

The following sections contain nonpoint, nonroad mobile, and events inventory documentation for York 

County, SC, which is part of the Charlotte-Rock Hill, NC-SC Nonattainment Area. The inventory data is 

for calendar year 2011. 

The York County, SC emissions inventory was developed by the EPA, with input from the Department, 

as part of the 2011 NEI effort. The 2011 EI was developed per the Air Emissions Reporting Requirements 

(AERR) rule. Emission estimates were calculated in tons per year, and converted to tons per average 

summer day for this submittal. Section III documents EPA/Department developed 2011 Nonpoint Source 

inventory; Section IV addresses the development of the nonroad emissions inventory for 2011; Section 

V documents the development of the 2011 Events inventory. 

II. OVERALL METHODOLOGY 

 A. SOURCE CATEGORY IDENTIFICATION 

Stationary source emissions data from sites and processes that do not meet the reporting requirements for 

point sources are classified as nonpoint sources. Nonpoint sources are small-scale industrial, commercial, 

and residential sources that generate emissions. Emissions are calculated and recorded on the countylevel. For the 2011 NEI, the EPA developed emission estimates for many nonpoint sectors in 

collaboration with a consortium of state and regional planning organizations called the Eastern Regional 

Technical Advisory Committee (ERTAC, http://www.ertac.us/). This task is referred to by ERTAC as the 

“Area Source Comparability” project on the ERTAC website, and a subgroup was developed to work on 

this project. The purpose of the subgroup and project was to agree on methodologies, emission factors, 

and SCCs for a number of important nonpoint sectors, allowing EPA to prepare the emissions estimates 

for all states using the group’s final approaches. 

 

Non-road sources are vehicles that do not normally operate on roads or highways and are often referred to 

as off-road or off-highway vehicles. The non-road source category is composed of a diverse collection of 

equipment, many of which are powered by diesel engines. Non-road emissions sources include, but are 

not limited to: agricultural equipment, construction and mining equipment, lawn and garden equipment, 

drilling rigs, and CMV. Also, aircraft and railyard emissions used to be included in the nonroad mobile 

category but are now tracked as point sources. For the 2011 NEI, the EPA developed emission estimates 

as part of the 2011 NEI. The sections below describe the emissions calculation methods used for the nonroad mobile source subcategories. 

Events are generally defined as any non-structural fire that occurs in wild lands. Events include wildfires 

and prescribed fires. These fires used to be included within the nonpoint sector but are now calculated and 

tracked by individual fire. 

 B. NONPOINT SOURCE EMISSION ESTIMATION APPROACH 

Nonpoint source emissions are typically estimated by multiplying an emission factor by some known 

indicator of collective activity for each source category within the inventory area. An indicator is any 

parameter associated with the activity level of a source that can be correlated with the air pollutant 

emissions from that source, such as production, number of employees, or population. 
Emissions Inventory and Documentation for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal Nonattainment 

Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 12 

In general, one of the following emissions estimation approaches is used to calculate the area source 

emissions: per capita emission factors, employment-related emission factors, commodity consumptionrelated emission factors, and level of activity based emission factors. The emission factors used were 

obtained from the EIIP Tech Reports, the Procedures document or the EPA's AP 42 Compilation of Air 

Pollutant Emission Factors, Fifth Edition, referred to as AP 42, and the ERTAC collaboration. 

There are several methods for estimating the activity level for a specific area source category. These are: 

treating area sources as point sources, surveying local activity levels, apportioning national or statewide 

activity totals to local inventory areas, using population or employment data. 

For certain categories, there can be overlap between the point source emissions and the area source 

emissions calculated with emission factors. The 2011 point source emissions in these categories were 

identified and were subtracted where appropriate. 

 C. NONROAD SOURCE EMISSION ESTIMATION APPROACH 

Non-highway mobile sources, sometimes referred to as off-road mobile, are those sources that can move 

but do not use the highway system. The estimation of emissions from mobile sources, like nonpoint 

sources, involves multiplying an activity level by an emission factor. 

The majority of the off-road mobile emissions were estimated by using the EPA's off-road mobile model 

NONROAD2008a. Direct emissions are generated with this model. 

D. EVENT SOURCE EMISSION ESTIMATION APPROACH

For 2011, EPA continues to use the SMARTFIRE2 (SF2) system to estimate wild land fire emission 

estimates. The Department did provide EPA with a list of all York County, SC wild land and prescribed 

fires to improve the quality of the estimates. 

III. 2011 NONPOINT SOURCE INVENTORY 

 

The following table summarizes the average ozone season day emissions for nonpoint sources in the 

NAA of York County, SC: 

Table 5: 2011 Actual Nonpoint Source Emissions for NAA of York County, SC 

SCC SCC Description 

NAA 

ozone 

season day 

NOX 

NAA 

ozone 

season day 

VOC 

2102001000 Industrial Fuel Combustion_Anthracite Coal 0.00 0.00

2102002000 

Industrial Fuel Combustion_Bituminous/Subbituminous 

Coal 0.04 0.00

2102004001 

Industrial Fuel Combustion_Distillate Oil_All Boiler 

Types 0.00 0.00

2102004002 

Industrial Fuel Combustion_Distillate Oil_All IC Engine 

Types 0.10 0.01

2102005000 

Industrial Fuel Combustion_Residual Oil_All Boiler 

Types 0.01 0.00
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Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 13 

SCC SCC Description 

NAA 

ozone 

season day 

NOX 

NAA 

ozone 

season day 

VOC 

2102006000 Industrial Fuel Combustion_NG_Boilers and IC Engines 0.03 0.00

2102007000 Industrial Fuel Combustion_LPG_All Boiler Types 0.00 0.00

2102008000 Industrial Fuel Combustion_Wood 0.26 0.02

2102011000 Industrial Fuel Combustion_Kerosene 0.00 0.00

2103001000 

Commercial/Institutional Fuel Combustion_Anthracite 

Coal 0.00 0.00

2103002000 

Commercial/Institutional Fuel 

Combustion_Bituminous/Subbituminous Coal 0.00 0.00

2103004001 

Commercial/Institutional Fuel Combustion_Distillate 

Oil_All Boilers 0.00 0.00

2103004002 

Commercial/Institutional Fuel Combustion_Distillate 

Oil__IC Engines 0.01 0.00

2103005000 Commercial/Institutional Fuel Combustion_Residual Oil 0.00 0.00

2103006000 

Commercial/Institutional Fuel Combustion_NG__Boilers 

and IC Engines 0.09 0.00

2103007000 

Commercial/Institutional Fuel Combustion_LPG__ All 

Combustor Types 0.00 0.00

2103008000 Commercial/Institutional Fuel Combustion_Wood 0.01 0.00

2103011000 Commercial/Institutional Fuel Combustion_Kerosene 0.00 0.00

2104001000 Residential Fuel Combustion_Anthracite Coal 0.00 0.00

2104002000 

Residential Fuel Combustion_Bituminous/Subbituminous 

Coal 0.00 0.00

2104004000 Residential Fuel Combustion_Distillate Oil 0.01 0.00

2104006000 Residential Fuel Combustion_Natural Gas 0.17 0.01

2104007000 Residential Fuel Combustion_LPG 0.02 0.00

2104008100 Residential Wood Combustion_Fireplace: general 0.00 0.02

2104008210 

Residential Wood Combustion_fireplace inserts; non-EPA 

certified 0.01 0.12

2104008220 

Residential Wood Combustion_fireplace inserts; EPA 

certified; non-catalytic 0.00 0.01

2104008230 

Residential Wood Combustion_Woodstove: fireplace 

inserts; EPA certified; catalytic 0.00 0.00

2104008310 

Residential Wood Combustion_Woodstove: freestanding, 

non-EPA certified 0.00 0.05

2104008320 

Residential Wood Combustion_Woodstove: freestanding, 

EPA certified, non-catalytic 0.00 0.00

2104008330 

Residential Wood Combustion_Woodstove: freestanding, 

EPA certified, catalytic 0.00 0.00

2104008400 Residential Wood Combustion_Woodstove: pellet-fired 0.00 0.00

2104008610 Residential Wood Combustion_Hydronic heater: outdoor 0.00 0.00

2104008700 

Residential Wood Combustion_Outdoor wood burning 

device, NEC (fire-pits, chimeneas, etc) 0.00 0.00
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Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 14 

SCC SCC Description 

NAA 

ozone 

season day 

NOX 

NAA 

ozone 

season day 

VOC 

2104009000 Residential Wood Combustion_Firelog 0.00 0.01

2104011000 Residential Fuel Combustion_Kerosene 0.00 0.00

2302002100 

Commercial Cooking - Charbroiling_Conveyorized 

Charbroiling 0.00 0.00

2302002200 

Commercial Cooking - Charbroiling_Under-fired 

Charbroiling 0.00 0.01

2302003000 Commercial Cooking - Frying_Deep Fat Fying 0.00 0.00

2302003100 Commercial Cooking - Frying_Flat Griddle Frying 0.00 0.00

2302003200 Commercial Cooking - Frying_Clamshell Griddle Frying 0.00 0.00

2401001000 Architectural Coatings_Surface Coating 0.00 0.57

2401005000 Auto Refinishing: SIC 7532_Surface Coating 0.00 0.10

2401008000 Traffic Markings_Surface Coating 0.00 0.00

2401015000 

Factory Finished Wood: SIC 2426 thru 242_Surface 

Coating 0.00 0.00

2401020000 Wood Furniture: SIC 25_Surface Coating 0.00 0.01

2401025000 Metal Furniture: SIC 25_Surface Coating 0.00 0.00

2401030000 Paper: SIC 26_Surface Coating 0.00 0.00

2401055000 Machinery and Equipment: SIC 35_Surface Coating 0.00 0.03

2401060000 Large Appliances: SIC 363_Surface Coating 0.00 0.00

2401065000 

Electronic and Other Electrical: SIC 36 - 363_Surface 

Coating 0.00 0.00

2401070000 Motor Vehicles: SIC 371_Surface Coating 0.00 0.28

2401090000 Miscellaneous Manufacturing_Surface Coating 0.00 0.00

2401100000 Industrial Maintenance Coatings_Surface Coating 0.00 0.15

2401200000 Other Special Purpose Coatings_Surface Coating 0.00 0.02

2415000000 All Processes/All Industries_Degreasing 0.00 0.29

2420000000 All Processes_Dry Cleaning 0.00 0.01

2425000000 All Processes_Graphic Arts 0.00 0.06

2460100000 All Personal Care Products_Consumer and Commercial 0.00 0.46

2460200000 All Household Products_Consumer and Commercial 0.00 0.44

2460400000 

All Automotive Aftermarket Products_Consumer and 

Commercial 0.00 0.33

2460500000 

All Coatings and Related Products_Consumer and 

Commercial 0.00 0.23

2460600000 All Adhesives and Sealants_Consumer and Commercial 0.00 0.14

2460800000 All FIFRA Related Products_Consumer and Commercial 0.00 0.43

2460900000 

Misc Products (Not Otherwise Covered)_Consumer and 

Commercial 0.00 0.02

2461850000 Pesticide Application: Agricultural_Commercial 0.00 0.06

2501011011 Residential Portable Gas Cans_Permeation 0.00 0.12

2501011012 

Residential Portable Gas Cans_Evaporation (includes 

Diurnal losses) 0.00 0.23
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Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 15 

SCC SCC Description 

NAA 

ozone 

season day 

NOX 

NAA 

ozone 

season day 

VOC 

2501011013 Residential Portable Gas Cans_Spillage During Transport 0.00 0.02

2501011014 

Residential Portable Gas Cans_Refilling at the Pump - 

Vapor Displacement 0.00 0.01

2501011015 

Residential Portable Gas Cans_Refilling at the Pump - 

Spillage 0.00 0.00

2501012011 Commercial Portable Gas Cans_Permeation 0.00 0.00

2501012012 

Commercial Portable Gas Cans_Evaporation (includes 

Diurnal losses) 0.00 0.01

2501012013 

Commercial Portable Gas Cans_Spillage During 

Transport 0.00 0.02

2501012014 

Commercial Portable Gas Cans_Refilling at the Pump - 

Vapor Displacement 0.00 0.02

2501012015 

Commercial Portable Gas Cans_Refilling at the Pump - 

Spillage 0.00 0.00

2501050120 Bulk Terminals: All Evaporative Losses_Gasoline 0.00 0.03

2501055120 Bulk Plants: All Evaporative Losses_Gasoline 0.00 0.01

2501060051 Gasoline Service Stations_Stage 1: Submerged Filling 0.00 0.00

2501060052 Gasoline Service Stations_Stage 1: Splash Filling 0.00 1.68

2501060053 

Gasoline Service Stations_Stage 1: Balanced Submerged 

Filling 0.00 0.00

2501060100 Gasoline Service Stations_Stage 2: Total 0.00 0.32

2501060201 

Gasoline Service Stations_Underground Tank: Breathing 

and Emptying 0.00 0.11

2501070100 Diesel Service Stations_Stage 2: Total 0.00 0.02

2501080050 Airports : Aviation Gasoline_Stage 1: Total 0.00 0.02

2501080100 Airports : Aviation Gasoline_Stage 2: Total 0.00 0.00

2505030120 Truck Transport_Gasoline 0.00 0.01

2505040120 Pipeline Transport_Gasoline 0.00 0.03

2610000100 Open Burning_Yard Waste - Leaf Species Unspecified 0.00 0.01

2610000400 Open Burning_Yard Waste - Brush Species Unspecified 0.00 0.00

2610000500 Open Burning_Land Clearing Debris 0.12 0.28

2610030000 Open Burning_Household Waste 0.03 0.05

2630020000 Public Owned_Wastewater Treatment 0.00 0.01

2801500000 

Agricultural Field Burning _Unspecified crop type and 

Burn Method 0.00 0.01

2810060100 Cremation_Humans 0.00 0.00

 GRAND TOTAL 0.93 6.93
Emissions Inventory and Documentation for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal Nonattainment 

Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 16 

A. NONPOINT CATEGORY METHODOLOGIES 

A.1 Bulk Gasoline Terminals 

Due to resource constraints at EPA, 2011 emissions are assumed to be the same as 2008 emissions. This 

category includes VOC emissions from bulk plants and bulk terminals. The Department did identify Point 

source emissions for this category and subtracted the point emissions from the nonpoint emissions. This 

ensured that the nonpoint emissions were not double counted. Detailed documentation for EPA’s 2008 

NEI can be found at http://www.epa.gov/ttn/chief/net/2008inventory.html

A.2 Commercial Cooking

Commercial cooking refers to the cooking of meat, including steak, hamburger, poultry, pork, and 

seafood, and French fries on five different cooking devices: chain-driven (conveyorized) charbroilers, 

underfired charbroilers, deep-fat fryers, flat griddles, and clamshell griddles. The York County, SC 

inventory includes VOC emissions from the following categories: 

Table 6: Source Classification Codes used in the Commercial Cooking sector

2302002100 Commercial 

Cooking 

Industrial 

Processes 

Food and Kindred 

Products: SIC 20 

Commercial Cooking 

- Charbroiling 

Conveyorized 

Charbroiling 

2302002200 Commercial 

Cooking 

Industrial 

Processes 

Food and Kindred 

Products: SIC 20 

Commercial Cooking 

- Charbroiling 

Under-fired 

Charbroiling 

2302003100 Commercial 

Cooking 

Industrial 

Processes 

Food and Kindred 

Products: SIC 20 

Commercial Cooking 

- Frying 

Flat Griddle 

Frying 

2302003000 Commercial 

Cooking 

Industrial 

Processes 

Food and Kindred 

Products: SIC 20 

Commercial Cooking 

- Frying 

Deep Fat 

Frying 

2302003200 Commercial 

Cooking 

Industrial 

Processes 

Food and Kindred 

Products: SIC 20 

Commercial Cooking 

- Frying 

Clamshell 

Griddle 

Frying 

The approach to estimating emissions from commercial cooking in 2011 consists of three general steps, as 

follows: 

- Determine county-level activity, i.e., the number of restaurants in each county in 2011; 

- Determine the fraction of restaurants with commercial cooking equipment, the average number of units 

of each type of equipment per restaurant, and the average amount of food cooked on each type of 

equipment; and 

- Apply emission factors to each type of food for each type of commercial cooking equipment. 

Data on the number of restaurants in each county are available from the U.S. Census Bureau County 

Business Patterns database, which reports the number of full-service restaurants (NAICS 722110) and 

limited-service restaurants (722211) in each county. The 2002 NEI, which is the most recent inventory in 

which the emissions from commercial cooking were estimated using restaurant-level data, rather than 

population data, used the Dun and Bradstreet industry database, which contains more specific information 

on the type of restaurant in each county. The documentation from the 2002 NEI identifies five specific 

categories of restaurants that are likely to have the equipment that matches the source categories for 

commercial cooking emissions, including: Ethnic food restaurants, Fast food restaurants, Family 

restaurants, Seafood restaurants, and Steak & Barbecue restaurants. Because Dun and Bradstreet data for 

2011 were not readily available, the number of restaurants had to be estimated using the 2002 data. Using 

the estimated number of restaurants in 2002, the number of restaurants in 2011 was determined by 
Emissions Inventory and Documentation for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal Nonattainment 

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August 22, 2014 

Appendix A - Page 17 

employing a growth factor based on the change in the number of restaurants between 2002 and 2011 as 

determined by the U.S. Census Bureau County Business Statistics Database. 

Emission factors for each pollutant for each type of commercial cooking equipment came from the 2002 

NEI documentation. This information remains the most complete catalog of emission factors for 

commercial cooking. The fraction of restaurants with commercial cooking equipment and the average 

units of equipment per restaurant were obtained. 

 A.3 Fuel Combustion – Industrial Boilers, ICEs 

This category contains industrial boiler emissions from bituminous/subbituminous coal, distillate oil, 

residual oil, natural gas, wood, and kerosene. Liquid petroleum gas emissions are all assumed to be 

accounted for in the point source inventory. This category includes boilers, ICE, including reciprocating 

and turbines, industrial space heaters and orchard heaters (nonpoint) firing any type of fuel. The 

Department did identify point source fuel consumptions for this category and subtracted it from the total 

county level fuel consumption. The county level fuel consumption, minus point source contribution, was 

used to estimate the emissions for this category. 

The EPA approach used in calculating emissions for industrial fuel combustion is to first develop statelevel fuel consumption estimates, then to allocate these to the county-level, and then to multiply the 

resulting county-level consumption estimates by appropriate emission factors. 

Total state-level industrial sector energy consumption data are available from the EIA’s State Energy 

Data System (SEDS), and were used for most source categories. In calculating the emission activity for 

industrial fuel combustion, EPA excluded all SEDS fuel types for which EIA assumes 100 percent of 

consumption is non-fuel use. For fuel types for which non-fuel use occurs, but is less than 100 percent, 

EPA reviewed two information sources to identify the non-fuel use percentage to apply in the NEI: EIA’s 

2002 Manufacturing Energy Consumption Survey (MECS) and EIA’s GHG emissions inventory for 2005. 

Further adjustments were made to the SEDS data for the coal and LPG sectors, and a separate EIA data 

source, Fuel Oil and Kerosene Sales, was used for distillate oil. These adjustments were necessary in 

order to avoid double counting between the point, nonroad, and nonpoint inventories. For example, coal 

consumed by coke plants is accounted for in the point source inventory, so when estimating nonpoint 

emissions, this consumption should be removed. Similarly, for distillate oil and LPG, the SEDS data 

includes consumption estimates for equipment that EPA includes in the nonroad sector inventory. 

Therefore, the SEDS data should be adjusted so that these emissions are not double counted. More details 

on these adjustments can be found in the documentation given in: 

ftp://ftp.epa.gov/EmisInventory/2011nei/doc/ 

Year 2009 SEDS data were used to estimate 2011 emissions because these were the most recent 

consumption data available at the time this work was performed in 2012. County-level activity estimates 

were developed by allocating the state-level adjusted EIA data. To do this, the EPA compiled 2009 

estimates of manufacturing sector employment from the Bureau of Census’ County Business Patterns 

2009 for use in this procedure. We allocated state-level industrial fuel combustion by fuel type to each 

county using the ratio of the number of manufacturing sector (NAICS codes 31-33) employees in each 

county to the total number of manufacturing sector employees in the state. A separate document describes 

how withheld County Business Patterns employment data were estimated. 
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August 22, 2014 

Appendix A - Page 18 

 A.4 Fuel Combustion – Commercial/Institutional 

This section includes the description of five EIS sectors: 

Fuel Comb – Commercial/Institutional Boilers, ICEs - Coal 

Fuel Comb - Commercial/Institutional Boilers, ICEs – Oil 

Fuel Comb - Commercial/Institutional Boilers, ICEs - Natural Gas 

Fuel Comb - Commercial/Institutional Boilers, ICEs – Biomass 

Fuel Comb - Commercial/Institutional Boilers, ICEs – Other 

They are treated here in a single section because the methods used are the same across all sectors. 

These five sectors are defined by the point source SCCs beginning with 103, 105 and 2030 and the 

nonpoint SCCs starting with 2103. These SCCs include boilers, ICE, including reciprocating and turbines, 

and space heaters. The primary fuels used by the boilers are coal, oil, and natural gas. Other fuels used by 

commercial/institutional boilers include biomass, waste products, and process gases. The primary fuels 

used by the ICE are natural gas and oil, but there are some which use various available process gases and 

LPG. The SCC-based EIS sector definitions will cause a different universe of units to be included in these 

sectors than would other definitions of boilers, turbines, or reciprocating internal combustion engines. For 

example, the Industrial/Commercial/Institutional Boilers and Process Heaters MACT include 25 MW and 

smaller boilers used to generate electricity; these boilers are not included in the sectors described here 

because they may have SCCs beginning with 101. 

The approach in calculating nonpoint emissions for commercial/institutional fuel combustion is to first 

develop state-level fuel consumption estimates, then to allocate these to the county-level, and then to 

multiply the resulting county-level consumption estimates by appropriate emission factors. 

Total state-level commercial sector energy consumption data are available from the EIA’s SEDS, and 

were used for most source categories. Several adjustments were made to the SEDS data. These 

adjustments were necessary in order to avoid double counting between the nonroad and nonpoint 

inventories. Furthermore, for the coal sector, SEDS data do not provide coal consumption estimates by 

type of coal (i.e., anthracite versus bituminous/subbituminous), and this level of data is needed because of 

differing emission factors for these coal types. For LPG and distillate oil, the SEDS data includes 

consumption estimates for equipment that EPA includes in the nonroad sector inventory. Therefore, the 

SEDS data should be adjusted so that these emissions are not double counted. 

To estimate the volume of commercial/institutional sector LPG consumption that should not be included 

in the nonpoint source inventory, EPA subtracted 18 percent from each state’s commercial sector LPG 

consumption estimate reported in SEDS. EPA ran the NMIM, which uses the NONROAD2008a model, 

for 2006 and calculated the national volume of nonroad LPG consumption from commercial sector source 

categories. This estimate was then divided into the SEDS total commercial sector LPG consumption 

estimate to yield the proportion of total commercial/institutional sector LPG consumption attributable to 

the nonroad sector in that year (approximately 18 percent). To avoid double-counting of distillate oil 

consumption between the nonpoint and nonroad sector emission inventories, EPA relied on a source other 

than SEDS to estimate consumption. The approach uses more detailed distillate oil consumption estimates 

reported in EIA’s Fuel Oil and Kerosene Sales, and assumptions from the regulatory impact analysis 

(RIA) for EPA’s nonroad diesel emissions rulemaking. Table 7 displays the assumptions that were 

applied to the state-level distillate oil consumption estimates reported in Fuel Oil and Kerosene Sales to 

estimate total stationary source commercial/institutional sector consumption. The percentages shown in 

Table 7 come from page 7-8 of EPA’s RIA for the nonroad diesel emissions rulemaking. More details on 
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Appendix A - Page 19 

these adjustments can be found in the documentation given in 

ftp://ftp.epa.gov/EmisInventory/2011nei/doc/ 

Year 2009 SEDS data were used to estimate 2011 emissions because these were the latest year 

consumption data available at the time this work was performed in 2012. 

Table 7: Assumptions Used to Estimate Commercial/Institutional Sector Stationary Source 

Distillate Fuel Consumption 

Sector Distillate Fuel Type Percent (%) of Total 

Consumption from Stationary 

Sources 

Commercial No. 1 Distillate Fuel Oil 80 

 No. 2 Distillate Fuel Oil 100 

 No. 2 Distillate/Ultra-Low, Low, 

and High Sulfur Diesel 

0a 

 No. 4 Distillate Fuel Oil 100 

a. A very small portion of total commercial/institutional diesel is consumed by point sources (SCC 203001xx). 

Year 2009 county-level activity estimates were developed by allocating the state-level activity resulting 

from the adjustments to the SEDS data described above. The EPA compiled 2006 estimates of 

commercial sector (NAICS codes 42 through 81) employment from the Bureau of Census’ County 

Business Patterns 2009 for use in this procedure. A separate document describes how withheld County 

Business Patterns employment data were estimated. The EPA also developed 2006 county-level estimates 

of institutional sector (NAICS code 92) employment from 2007 local government employment data in the 

2007 Census of Governments and adjustments reflecting each state’s 2006/2007 local government 

employment ratio. State-level commercial/institutional fuel combustion by fuel type was allocated to each 

county using the ratio of the number of commercial/institutional sector employees in each county to the 

total number of commercial/institutional sector employees in the state.
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Appendix A - Page 20 

 A.5 Fuel Combustion – Residential – Natural Gas, Oil, and Other

Table 8 shows the SCCs used in the 2011 NEI from the sectors: “Fuel Comb - Residential – Other,” 

“Fuel Comb - Residential – Oil,” and “Fuel Comb - Residential - Natural Gas.” EPA estimates emission 

for all SCCs other than SCC=2104005000 and SCC=2104006010. 

Table 8: SCCs in the Residential Fuel Combustion Sectors (except Wood) in the 2011 NEI 

SCC SCC Level Three SCC Level Four EI Sector 

2104001000 Anthracite Coal Total: All Combustor 

Types 

Fuel Comb - Residential - 

Other 

2104002000 Bituminous/Subbituminous 

Coal 

Total: All Combustor 

Types 

Fuel Comb - Residential - 

Other 

2104004000 Distillate Oil Total: All Combustor 

Types 

Fuel Comb - Residential - Oil 

2104005000 Residual Oil Total: All Combustor 

Types 

Fuel Comb - Residential - Oil 

2104006000 Natural Gas Total: All Combustor 

Types 

Fuel Comb - Residential - 

Natural Gas 

2104006010 Natural Gas Residential Furnaces Fuel Comb - Residential - 

Natural Gas 

2104007000 Liquefied Petroleum Gas 

(LPG) 

Total: All Combustor 

Types 

Fuel Comb - Residential - 

Other 

2104011000 Kerosene Total: All Heater Types Fuel Comb - Residential - Oil 

The approach in calculating nonpoint emissions for commercial/institutional fuel combustion is to first 

develop state-level fuel consumption estimates, then to allocate these to the county-level, and then to 

multiply the resulting county-level consumption estimates by appropriate emission factors. 

Total state-level residential sector energy consumption data are available from the EIA’s SEDS, and were 

used for most source categories. Several adjustments were made to the SEDS data. These adjustments 

were necessary in order to avoid double counting between the nonroad and nonpoint inventories. 

 A.6 Fuel Combustion – Residential – Wood 

This source category includes residential wood burning devices such as fireplaces, fireplaces with inserts 

(inserts), free standing woodstoves, pellet stoves, outdoor hydronic heaters (also know as outdoor wood 

boilers), indoor furnaces, and outdoor burning in fire-pits and chimeneas. We further differentiate free 

standing woodstoves and inserts into three categories: conventional (not EPA certified); EPA certified, 

catalytic; and EPA certified, noncatalytic. Generally speaking, the conventional units were constructed 

prior to 1988. Units constructed after 1988 had to meet EPA emission standards and they are either 

catalytic or non-catalytic. Table 9 shows the SCCs used in the 2011 NEI from in this sector. 
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August 22, 2014 

Appendix A - Page 21 

Table 9: SCCs in the Residential Wood Combustion Sector in the 2011 NEI 

SCC SCC Level Three* SCC Level Four 

2104008100 Wood Fireplace: general 

2104008210 Wood Woodstove: fireplace inserts; 

non-EPA certified 

2104008220 Wood Woodstove: fireplace inserts; 

EPA certified; non-catalytic 

2104008230 Wood Woodstove: fireplace inserts; 

EPA certified; catalytic 

2104008300 Wood Woodstove: freestanding, general 

2104008310 Wood Woodstove: freestanding, nonEPA certified 

2104008320 Wood Woodstove: freestanding, EPA 

certified, non-catalytic 

2104008330 Wood Woodstove: freestanding, EPA 

certified, catalytic 

2104008400 Wood Woodstove: pellet-fired, general 

(freestanding or FP insert) 

2104008510 Wood Furnace: Indoor, cordwood-fired, 

non-EPA certified 

2104008610 Wood Hydronic heater: outdoor 

2104008700 Wood Outdoor wood burning device, 

NEC (fire-pits, chimeneas, etc) 

2104009000 Firelog Total: All Combustor Types 

*SCC Level One is “Stationary Source Fuel Combustion” and SCC Level Two is “Residential” 

Emission estimates were developed using a tool in Microsoft® Access®, developed by EPA. This tool 

computes county- and SCC-level emissions of criteria and HAPs for the entire country. EPA updated the 

inputs to the tool for the 2011 NEI in partnership with ERTAC. For the 2011 inventory, the appliance 

profiles were updated using the newest American Housing Survey results. 

The emissions from residential wood combustion are calculated using the equation below: 

Ey = u × EFy × CFy where: 

Ey= annual emissions (tons/yr) for a specific appliance (SCC) 

 Annual activity (tons of fuel burned) 

EFy= emission factor (tons of pollutant emitted/ mass of fuel used) 

CFy= control factor 

y is a specific pollutant

 A.7 Gas Stations 

Gas Station emissions consist of estimates from Stage 1 gasoline distribution from service station 

unloading and from Stage 1 gasoline distribution from underground storage tanks. Emission factors and 

equations used to calculate these emissions came from the EPA’s AP-42. The York County, SC 2011 

estimates were calculated by EPA. There are no gas stations that are point sources, so no point source 

subtraction was required. 
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August 22, 2014 

Appendix A - Page 22 

 A.8 Solvent – Consumer & Commercial Solvent Use 

This category includes only non-industrial solvents that are used in commercial or consumer applications. 

The solvent containing products consist of a diverse grouping, e.g. personal care products, household 

products, automotive aftermarket products, adhesives and sealants, pesticides, some coatings, and other 

commercial and consumer products that may emit VOCs. VOC emissions for this category is estimated 

by using an agreed upon emission factor during the ERTAC collaboration with EPA. York County, SC 

2011 emission estimates came from the EPA 2011 NEI v1, with no changes by the Department. 

 A.9 Solvent – Degreasing, Dry Cleaning, and Graphic Arts 

Degreasing operations occur frequently in small shops, such as auto repair, painting operations, etc. 

Solvents, which can emit VOC, are often used to remove grease from a surface. 

Graphic arts include operations that are involved in printing of newspapers, magazines, books, and other 

printed materials, which can be divided into several subsets based upon printing technology. Over the last 

decade ink-jet and offset lithography have emerged as the dominant technologies. The use of oils as ink 

solvents and the reduction of alcohols in the fountain solution and in the cleanup solutions have resulted 

in notable reductions in emissions for offset lithography. Ink-jet printing results in essentially no VOC 

emissions. 

Dry cleaners are sources that launder clothing using solvents, some emitting VOC as a result. The VOC 

emissions from dry cleaning vary with the type of process and the solvent used. For the most part, dry 

cleaners (coin-op and conventional) are small business entities. As a result of their size, dry cleaning 

emissions are not captured as point sources. 

An employee based emission factor was used for these categories. The emission estimates generated by 

the joint effort of ERTAC and EPA, were used in the 2011 NEI v1 and were also accepted for York 

County, SC. It is possible to have some overlap with point sources with these three categories, but that 

was not the case for York Co, SC and no point source subtractions were made. 

 A.10 Solvent – Industrial and Non-Industrial Surface Coating 

These categories include a list of similar operations that involve applying a coating to a surface, which 

may emit VOC. The following is a list of surface coating operations that were calculated for York 

County, SC in the 2011 NEI v1: 

Architectural Coatings 

Auto Refinishing: SIC 7532 

Traffic Markings 

Factory Finished Wood: SIC 2426 

Wood Furniture: SIC25 

Metal Furniture: SIC 25 

Machinery and Equipment: SIC 35 

Large Appliances: SIC 363 

Motor Vehicles: SIC 371 

Industrial Maintenance Coatings 

Other Special Purpose Coatings 
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Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 23 

An employee based emission factor was used for these categories. The emission estimates generated by 

the joint collaboration of ERTAC and EPA, were used in the 2011 NEI v1 and were also accepted for 

York County, SC. It is possible to have some overlap with point sources with these three categories, but 

that was not the case for York Co, SC and no point source subtractions were made. 

 A.11 Open Burning 

Open burning includes the outdoor combustion of yard waste, household waste, and land clearing debris. 

These fires result in the emission of NOx and VOC. The emission estimates generated by EPA in the 2011 

NEIv1 were accepted for York County, SC. More detailed description of how these emissions were 

calculated should be available in the final draft of the 2011 NEI Technical Support Document.

 A.12 Portable Gas Cans 

PFCs cover emissions from residential and commercial sector portable gasoline containers. Permeation, 

diurnal, transport, spillage, and vapor displacement emissions are typically accounted for in this category. 

The emission estimates generated by the joint effort of ERTAC and EPA, were used in the 2011 NEI v1 

and were also accepted for York County, SC. More detailed description of how these emissions were 

calculated should be available in the final draft of the 2011 NEI Technical Support Document.

B. NON-POINT AVERAGE SUMMER DAY EMISSIONS ESTIMATE 

The Department does not have ozone season emissions data for the NAA of York, County, SC, so the 

whole York County, SC annual emissions from the EPA’s 2011 NEI v1 was used as the starting point. 

The next step was to allocate the annual emissions down to an average ozone season day. No known 

allocation factors were available to do this so the annual emissions were allocated down to an average 

daily value by dividing by 365 (the number of days in the year 2011). The resulting average daily value 

was assumed to be an average ozone season daily value. 

Now that the average ozone season daily emissions for the whole York County, SC are determined, the 

emissions were allocated to the NAA only portion of the county. For nonpoint sources, the Department 

decided that using human population was the best indicator of where these emissions may be occurring in 

the county. Therefore, the 2010 census tract data was obtained and a ratio of 0.7836 was calculated 

(78.36% of human population in York County, SC is found in the NAA). This ratio is almost identical to 

the ratio used in previous SIP/Conformity documents. The whole county ozone season daily emissions 

were multiplied by this ratio to estimate the average ozone season daily emissions for the NAA of York 

County. 
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Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 24 

III. 2011 NONROAD SOURCE INVENTORY 

Table 10 summarizes the average ozone season day emissions for nonroad sources in the NAA of York 

County, SC. 

Table 10: 2011 Actual Nonroad Source Emissions for NAA of York County, SC 

SCC SCC Description 

NAA 

ozone 

season 

day 

NOX 

NAA 

ozone 

season 

day 

VOC 

2260001010 Recreational Gasoline, 2-Stroke_Motorcycles 0.00 0.07

2260001030 Recreational Gasoline, 2-Stroke_All_Terrain Vehicles 0.00 0.09

2260001060 Recreational Gasoline, 2-Stroke_Specialty_Vehicles/Carts 0.00 0.00

2260002006 

Construction and Mining Gasoline, 2-

Stroke_Tampers/Rammers 0.00 0.01

2260002009 

Construction and Mining Gasoline, 2-Stroke_Plate 

Compactors 0.00 0.00

2260002021 

Construction and Mining Gasoline, 2-Stroke_Paving 

Equipment 0.00 0.00

2260002027 

Construction and Mining Gasoline, 2-Stroke_Signal 

Boards/Light Plants 0.00 0.00

2260002039 

Construction and Mining Gasoline, 2-

Stroke_Concrete/Industrial Saws 0.00 0.03

2260002054 

Construction and Mining Gasoline, 2-

Stroke_Crushing/Processing Equipment 0.00 0.00

2260003030 IndustrialGasoline, 2-Stroke_Sweepers/Scrubbers 0.00 0.00

2260003040 

IndustrialGasoline, 2-Stroke_Other General Industrial 

Equipment 0.00 0.00

2260004015 

Lawn and Garden Gasoline, 2-Stroke_Rotary Tillers < 6 HP 

(Residential) 0.00 0.00

2260004016 

Lawn and Garden Gasoline, 2-Stroke_Rotary Tillers < 6 HP 

(Commercial) 0.00 0.00

2260004020 

Lawn and Garden Gasoline, 2-Stroke_Chain Saws < 6 HP 

(Residential) 0.00 0.02

2260004021 

Lawn and Garden Gasoline, 2-Stroke_Chain Saws < 6 HP 

(Commercial) 0.00 0.08

2260004025 

Lawn and Garden Gasoline, 2-

Stroke_Trimmers/Edgers/Brush Cutters (Residential) 0.00 0.02

2260004026 

Lawn and Garden Gasoline, 2-

Stroke_Trimmers/Edgers/Brush Cutters (Commercial) 0.00 0.04

2260004030 

Lawn and Garden Gasoline, 2-Stroke_Leafblowers/Vacuums 

(Residential) 0.00 0.01
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Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 25 

SCC SCC Description 

NAA 

ozone 

season 

day 

NOX 

NAA 

ozone 

season 

day 

VOC 

2260004031 

Lawn and Garden Gasoline, 2-Stroke_Leafblowers/Vacuums 

(Commercial) 0.00 0.04

2260004071 

Lawn and Garden Gasoline, 2-Stroke_Turf Equipment 

(Commercial) 0.00 0.00

2260005035 Agricultural Gasoline, 2-Stroke_Sprayers 0.00 0.00

2260006005 Commercial Gasoline, 2-Stroke_Generator Sets 0.00 0.00

2260006010 Commercial Gasoline, 2-Stroke_Pumps 0.00 0.01

2260006015 Commercial Gasoline, 2-Stroke_Air Compressors 0.00 0.00

2260006035 Commercial Gasoline, 2-Stroke_Hydro-power Units 0.00 0.00

2260007005 Logging Gasoline, 2-Stroke_Chain Saws : 6 HP 0.00 0.01

2265001010 Recreational Gasoline, 4-Stroke_Motorcycles: Off-road 0.00 0.00

2265001030 Recreational Gasoline, 4-Stroke_All Terrain Vehicles 0.00 0.04

2265001050 Recreational Gasoline, 4-Stroke_Golf Carts 0.00 0.01

2265001060 Recreational Gasoline, 4-Stroke_Specialty Vehicles/Carts 0.00 0.00

2265002003 Construction and Mining Gasoline, 4-Stroke_Pavers 0.00 0.00

2265002006 

Construction and Mining Gasoline, 4-

Stroke_Tampers/Rammers 0.00 0.00

2265002009 

Construction and Mining Gasoline, 4-Stroke_Plate 

Compactors 0.00 0.00

2265002015 Construction and Mining Gasoline, 4-Stroke_Rollers 0.00 0.00

2265002021 

Construction and Mining Gasoline, 4-Stroke_Paving 

Equipment 0.00 0.00

2265002024 

Construction and Mining Gasoline, 4-Stroke_Surfacing 

Equipment 0.00 0.00

2265002027 

Construction and Mining Gasoline, 4-Stroke_Signal 

Boards/Light Plants 0.00 0.00

2265002030 Construction and Mining Gasoline, 4-Stroke_Trenchers 0.00 0.00

2265002033 Construction and Mining Gasoline, 4-Stroke_Bore/Drill Rigs 0.00 0.00

2265002039 

Construction and Mining Gasoline, 4-Stroke_ 

Concrete/Industrial Saws 0.00 0.00

2265002042 

Construction and Mining Gasoline, 4-Stroke_Cement and 

Mortar Mixers 0.00 0.01

2265002045 Construction and Mining Gasoline, 4-Stroke_Cranes 0.00 0.00

2265002054 

Construction and Mining Gasoline, 4-

Stroke_Crushing/Processing Equipment 0.00 0.00

2265002057 

Construction and Mining Gasoline, 4-Stroke_Rough Terrain 

Forklifts 0.00 0.00

2265002060 

Construction and Mining Gasoline, 4-Stroke_Rubber Tire 

Loaders 0.00 0.00
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August 22, 2014 

Appendix A - Page 26 

SCC SCC Description 

NAA 

ozone 

season 

day 

NOX 

NAA 

ozone 

season 

day 

VOC 

2265002066 

Construction and Mining Gasoline, 4-Stroke_ 

Tractors/Loaders/Backhoes 0.00 0.00

2265002072 

Construction and Mining Gasoline, 4-Stroke_Skid Steer 

Loaders 0.00 0.00

2265002078 

Construction and Mining Gasoline, 4-Stroke_ 

Dumpers/Tenders 0.00 0.00

2265002081 

Construction and Mining Gasoline, 4-Stroke_Other 

Construction Equipment 0.00 0.00

2265003010 Industrial Gasoline, 4-Stroke_Aerial Lifts 0.00 0.00

2265003020 Industrial Gasoline, 4-Stroke_Forklifts 0.00 0.00

2265003030 Industrial Gasoline, 4-Stroke_Sweepers/Scrubbers 0.00 0.00

2265003040 

Industrial Gasoline, 4-Stroke_Other General Industrial 

Equipment 0.00 0.00

2265003050 

Industrial Gasoline, 4-Stroke_Other Material Handling 

Equipment 0.00 0.00

2265003060 Industrial Gasoline, 4-Stroke_AC\Refrigeration 0.00 0.00

2265003070 Industrial Gasoline, 4-Stroke_Terminal Tractors 0.00 0.00

2265004010 

Lawn and Garden Gasoline, 4-Stroke_Lawn Mowers 

(Residential) 0.01 0.10

2265004011 

Lawn and Garden Gasoline, 4-Stroke_Lawn Mowers 

(Commercial) 0.01 0.04

2265004015 

Lawn and Garden Gasoline, 4-Stroke_Rotary Tillers < 6 HP 

(Residential) 0.00 0.01

2265004016 

Lawn and Garden Gasoline, 4-Stroke_Rotary Tillers < 6 HP 

(Commercial) 0.00 0.03

2265004025 

Lawn and Garden Gasoline, 4-

Stroke_Trimmers/Edgers/Brush Cutters (Residential) 0.00 0.00

2265004026 

Lawn and Garden Gasoline, 4-Stroke Trimmers/Edgers/Brush 

Cutters (Commercial) 0.00 0.00

2265004030 

Lawn and Garden Gasoline, 4-Stroke Leafblowers/Vacuums 

(Residential) 0.00 0.00

2265004031 

Lawn and Garden Gasoline, 4-Stroke Leafblowers/Vacuums 

(Commercial) 0.01 0.02

2265004040 

Lawn and Garden Gasoline, 4-Stroke Rear Engine Riding 

Mowers (Residential) 0.00 0.01

2265004041 

Lawn and Garden Gasoline, 4-Stroke Rear Engine Riding 

Mowers (Commercial) 0.00 0.00

2265004046 

Lawn and Garden Gasoline, 4-Stroke Front Mowers 

(Commercial) 0.00 0.00
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August 22, 2014 

Appendix A - Page 27 

SCC SCC Description 

NAA 

ozone 

season 

day 

NOX 

NAA 

ozone 

season 

day 

VOC 

2265004051 

Lawn and Garden Gasoline, 4-Stroke Shredders < 6 HP 

(Commercial) 0.00 0.00

2265004055 

Lawn and Garden Gasoline, 4-Stroke Lawn and Garden 

Tractors (Residential) 0.02 0.11

2265004056 

Lawn and Garden Gasoline, 4-Stroke Lawn and Garden 

Tractors (Commercial) 0.01 0.03

2265004066 

Lawn and Garden Gasoline, 4-Stroke Chippers/Stump 

Grinders (Commercial) 0.00 0.00

2265004071 

Lawn and Garden Gasoline, 4-Stroke Turf Equipment 

(Commercial) 0.03 0.09

2265004075 

Lawn and Garden Gasoline, 4-Stroke Other Lawn and 

Garden Equipment (Residential) 0.00 0.01

2265004076 

Lawn and Garden Gasoline, 4-Stroke Other Lawn and 

Garden Equipment (Commercial) 0.00 0.01

2265005010 Agricultural Gasoline, 4-Stroke_2-Wheel Tractors 0.00 0.00

2265005015 Agricultural Gasoline, 4-Stroke_Agricultural Tractors 0.00 0.00

2265005020 Agricultural Gasoline, 4-Stroke_Combines 0.00 0.00

2265005025 Agricultural Gasoline, 4-Stroke_Balers 0.00 0.00

2265005030 Agricultural Gasoline, 4-Stroke_Agricultural Mowers 0.00 0.00

2265005035 Agricultural Gasoline, 4-Stroke_Sprayers 0.00 0.00

2265005040 Agricultural Gasoline, 4-Stroke_Tillers : 6 HP 0.00 0.00

2265005045 Agricultural Gasoline, 4-Stroke_Swathers 0.00 0.00

2265005055 

Agricultural Gasoline, 4-Stroke_Other Agricultural 

Equipment 0.00 0.00

2265005060 Agricultural Gasoline, 4-Stroke_Irrigation Sets 0.00 0.00

2265006005 Commercial Gasoline, 4-Stroke_Generator Sets 0.02 0.08

2265006010 Commercial Gasoline, 4-Stroke_Pumps 0.01 0.02

2265006015 Commercial Gasoline, 4-Stroke_Air Compressors 0.00 0.01

2265006025 Commercial Gasoline, 4-Stroke_Welders 0.01 0.01

2265006030 Commercial Gasoline, 4-Stroke_Pressure Washers 0.01 0.04

2265006035 Commercial Gasoline, 4-Stroke_Hydro-power Units 0.00 0.00

2265007010 Logging Gasoline, 4-Stroke_Shredders : 6 HP 0.00 0.00

2265007015 

Logging Gasoline, 4-Stroke_Forest Equipment - 

Feller/Bunch/Skidder 0.00 0.00

2265010010 Industrial Gasoline, 4-Stroke Other Oil Field Equipment 0.00 0.00

2267001060 Recreational_LPG_Specialty Vehicles/Carts 0.00 0.00

2267002003 Construction and Mining _LPG_Pavers 0.00 0.00

2267002015 Construction and Mining _LPG_Rollers 0.00 0.00

2267002021 Construction and Mining _LPG_Paving Equipment 0.00 0.00
Emissions Inventory and Documentation for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal Nonattainment 

Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 28 

SCC SCC Description 

NAA 

ozone 

season 

day 

NOX 

NAA 

ozone 

season 

day 

VOC 

2267002024 Construction and Mining_ LPG_Surfacing Equipment 0.00 0.00

2267002030 Construction and Mining _LPG_Trenchers 0.00 0.00

2267002033 Construction and Mining _LPG_Bore/Drill Rigs 0.00 0.00

2267002039 Construction and Mining _LPG_Concrete/Industrial Saws 0.00 0.00

2267002045 Construction and Mining_ LPG_Cranes 0.00 0.00

2267002054 

Construction and Mining _LPG_Crushing/Processing 

Equipment 0.00 0.00

2267002057 Construction and Mining _LPG_Rough Terrain Forklifts 0.00 0.00

2267002060 Construction and Mining_ LPG_Rubber Tire Loaders 0.00 0.00

2267002066 Construction and Mining _LPG_Tractors/Loaders/Backhoes 0.00 0.00

2267002072 Construction and Mining _LPG_Skid Steer Loaders 0.00 0.00

2267002081 

Construction and Mining _LPG_Other Construction 

Equipment 0.00 0.00

2267003010 Industrial _LPG_Aerial Lifts 0.00 0.00

2267003020 Industrial_ LPG_Forklifts 0.14 0.04

2267003030 Industrial _LPG_Sweepers/Scrubbers 0.00 0.00

2267003040 Industrial _LPG_Other General Industrial Equipment 0.00 0.00

2267003050 Industrial _LPG_Other Material Handling Equipment 0.00 0.00

2267003070 Industrial _LPG_Terminal Tractors 0.00 0.00

2267004066 

Lawn and Garden_LPG_Chippers/Stump Grinders 

(Commercial) 0.00 0.00

2267005055 Agricultural _LPG_Other Agricultural Equipment 0.00 0.00

2267005060 Agricultural_ LPG_Irrigation Sets 0.00 0.00

2267006005 Commercial_ LPG_Generator Sets 0.01 0.00

2267006010 Commercial _LPG_Pumps 0.00 0.00

2267006015 Commercial _LPG_Air Compressors 0.00 0.00

2267006025 Commercial _LPG_Welders 0.00 0.00

2267006030 Commercial _LPG_Pressure Washers 0.00 0.00

2267006035 Commercial_ LPG_Hydro-power Units 0.00 0.00

2268002081 

Construction and Mining _CNG_Other Construction 

Equipment 0.00 0.00

2268003020 Industrial _CNG_Forklifts 0.01 0.00

2268003030 Industrial _CNG_Sweepers/Scrubbers 0.00 0.00

2268003040 Industrial CNG_Other General Industrial Equipment 0.00 0.00

2268003060 Industrial CNG_AC/Refrigeration 0.00 0.00

2268003070 Industrial CNG_Terminal Tractors 0.00 0.00

2268005055 Agricultural CNG_Other Agricultural Equipment 0.00 0.00

2268005060 AgriculturalCNG_Irrigation Sets 0.00 0.00

2268006005 Commercial CNG_Generator Sets 0.00 0.00

2268006010 Commercial CNG_Pumps 0.00 0.00
Emissions Inventory and Documentation for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal Nonattainment 

Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 29 

SCC SCC Description 

NAA 

ozone 

season 

day 

NOX 

NAA 

ozone 

season 

day 

VOC 

2268006015 Commercial CNG_Air Compressors 0.00 0.00

2268006020 Commercial CNG_Gas Compressors 0.00 0.00

2268010010 Industrial CNG_Other Oil Field Equipment 0.00 0.00

2270001060 Recreational_Diesel_Specialty Vehicles/Carts 0.00 0.00

2270002003 Construction and Mining _Diesel_Pavers 0.02 0.00

2270002006 Construction and Mining _Diesel_Tampers/Rammers 0.00 0.00

2270002009 Construction and Mining _Diesel_Plate Compactors 0.00 0.00

2270002015 Construction and Mining _Diesel_Rollers 0.05 0.00

2270002018 Construction and Mining _Diesel_Scrapers 0.06 0.00

2270002021 Construction and Mining_ Diesel_Paving Equipment 0.00 0.00

2270002024 Construction and Mining _Diesel_Surfacing Equipment 0.00 0.00

2270002027 Construction and Mining _Diesel_Signal Boards/Light Plants 0.01 0.00

2270002030 Construction and Mining _Diesel_Trenchers 0.03 0.00

2270002033 Construction and Mining_ Diesel_Bore/Drill Rigs 0.03 0.00

2270002036 Construction and Mining _Diesel_Excavators 0.19 0.01

2270002039 Construction and Mining_ Diesel_Concrete/Industrial Saws 0.00 0.00

2270002042 Construction and Mining _Diesel_Cement and Mortar Mixers 0.00 0.00

2270002045 Construction and Mining _Diesel_Cranes 0.05 0.00

2270002048 Construction and Mining _Diesel_Graders 0.05 0.00

2270002051 Construction and Mining _Diesel_Off-highway Trucks 0.19 0.01

2270002054 

Construction and Mining _Diesel_Crushing/Processing 

Equipment 0.01 0.00

2270002057 Construction and Mining _Diesel_Rough Terrain Forklifts 0.07 0.01

2270002060 Construction and Mining _Diesel_Rubber Tire Loaders 0.25 0.02

2270002066 

Construction and Mining 

_Diesel_Tractors/Loaders/Backhoes 0.18 0.04

2270002069 Construction and Mining _Diesel_Crawler Tractor/Dozers 0.21 0.01

2270002072 Construction and Mining _Diesel_Skid Steer Loaders 0.12 0.03

2270002075 Construction and Mining _Diesel_Off-highway Tractors 0.03 0.00

2270002078 Construction and Mining _Diesel_Dumpers/Tenders 0.00 0.00

2270002081 

Construction and Mining _Diesel_Other Construction 

Equipment 0.03 0.00

2270003010 Industrial _Diesel_Aerial Lifts 0.00 0.00

2270003020 Industrial_ Diesel_Forklifts 0.04 0.00

2270003030 Industrial_ Diesel_Sweepers/Scrubbers 0.02 0.00

2270003040 Industrial_ Diesel_General Industrial Equipment 0.02 0.00

2270003050 Industrial _Diesel_Material Handling Equipment 0.00 0.00

2270003060 Industrial _Diesel_AC/Refrigeration 0.05 0.00

2270003070 Industrial _Diesel_Terminal Tractors 0.02 0.00
Emissions Inventory and Documentation for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal Nonattainment 

Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 30 

SCC SCC Description 

NAA 

ozone 

season 

day 

NOX 

NAA 

ozone 

season 

day 

VOC 

2270004031 

Lawn and Garden_ Diesel_Leafblowers/Vacuums 

(Commercial) 0.00 0.00

2270004046 Lawn and Garden _Diesel_Front Mowers (Commercial) 0.02 0.00

2270004056 

Lawn and Garden _Diesel_Lawn and Garden Tractors 

(Commercial) 0.00 0.00

2270004066 

Lawn and Garden_ Diesel_Chippers/Stump Grinders 

(Commercial) 0.02 0.00

2270004071 Lawn and Garden _Diesel_Turf Equipment (Commercial) 0.00 0.00

2270004076 

Lawn and Garden _Diesel_Other Lawn and Garden 

Equipment (Commercial) 0.00 0.00

2270005010 Agricultural _Diesel_2-Wheel Tractors 0.00 0.00

2270005015 Agricultural _Diesel_Agricultural Tractors 0.06 0.01

2270005020 Agricultural_ Diesel_Combines 0.01 0.00

2270005025 Agricultural _Diesel_Balers 0.00 0.00

2270005030 Agricultural _Diesel_Agricultural Mowers 0.00 0.00

2270005035 Agricultural _Diesel_Sprayers 0.00 0.00

2270005040 Agricultural _Diesel_Tillers : 6 HP 0.00 0.00

2270005045 Agricultural _Diesel_Swathers 0.00 0.00

2270005055 Agricultural_ Diesel_Other Agricultural Equipment 0.00 0.00

2270005060 Agricultural _Diesel_Irrigation Sets 0.00 0.00

2270006005 Commercial _Diesel_Generator Sets 0.04 0.01

2270006010 Commercial _Diesel_Pumps 0.01 0.00

2270006015 Commercial _Diesel_Air Compressors 0.02 0.00

2270006025 Commercial _Diesel_Welders 0.01 0.00

2270006030 Commercial _Diesel_Pressure Washers 0.00 0.00

2270006035 Commercial _Diesel_Hydro-power Units 0.00 0.00

2270007015 Logging _Diesel_Forest Eqp - Feller/Bunch/Skidder 0.02 0.00

2270010010 Industrial _Diesel_Other Oil Field Equipment 0.00 0.00

2282005010 Gasoline _2-Stroke_Pleasure Craft_Outboard 0.02 0.27

2282005015 Gasoline _2-Stroke_Pleasure Craft_Personal Water Craft 0.01 0.07

2282010005 Gasoline _4-Stroke_Pleasure Craft_Inboard/Sterndrive 0.02 0.03

2282020005 Diesel_Pleasure Craft_Inboard/Sterndrive 0.02 0.00

2282020010 Diesel _Pleasure Craft_Outboard 0.00 0.00

2285002006 Diesel_Railroad Line Haul Locomotives: Class I 0.22 0.01 

2285002007 Diesel_Railroad_Line Haul Locomotives: Class II / III 0.00 0.00 

2285002015 Diesel_Railway Maintenance 0.00 0.00

2285004015 Gasoline_4-Stroke_Railway Maintenance 0.00 0.00

2285006015 LPG_Railway Maintenance 0.00 0.00

 GRAND TOTAL 2.63 1.78
Emissions Inventory and Documentation for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal Nonattainment 

Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 31 

Nonroad mobile sources are those sources that can move but do not use the highway system. Examples 

include lawn mowers, agricultural equipment, construction equipment, and powerboats. Most activity was 

estimated using the EPA's off-road mobile model NONROAD2008a. 

EPA created a comprehensive set of mobile source emissions data for criteria pollutants, hazardous air 

pollutants, and greenhouse gases for all states, Puerto Rico, and US Virgin Islands as a starting point for 

the NEI. EPA uses models to estimate emissions for most of the mobile sources categories. For 

development and documentation purposes, the major groups of nonroad mobile sources are commercial 

marine vessels and nonroad equipment included in the NONROAD 2008a model. For York Co, SC, there 

are no commercial marine vessels so that category is not found in the inventory. 

The nonroad mobile source category includes a diverse collection of equipment such as lawn mowers, 

chain saws, tractors, all terrain vehicles, fork lifts and construction equipment. The EPA 

NONROAD2008a model generates emissions directly and includes more than 80 different types of 

equipment. 

The NMIM (http://www.epa.gov/otaq/nmim.htm) is EPA’s consolidated mobile emissions estimation 

system that allows EPA to produce nonroad mobile emissions in a consistent and automated way for the 

entire country. EPA encouraged agencies to submit NMIM inputs to the EIS for the 2011 NEI for 

inclusion in the NCD. The NCD contains all the county-specific information needed to run NONROAD. 

It also contains the ratios that are applied to NONROAD outputs to estimate emissions of HAPs, 

dioxins/furans (not part of the NEI), and some metals. The Department did not have any improved data 

for the 2011 NONROAD sources, so the EPA generated NCD was accepted for use for the 2011 NEI v1 

emission estimates. 

The Department does not have ozone season emissions data for the NAA of York, County, SC, so the 

whole York County, SC annual emissions from the EPA’s 2011 NEI v1 was used as the starting point. 

The next step was to allocate the annual emissions down to an average ozone season day. No known 

allocation factors were available to do this so the annual emissions were allocated down to an average 

daily value by dividing by 365 (the number of days in the year 2011). The resulting average daily value 

was assumed to be an average ozone season daily value. 

 

Now that the average ozone season daily emissions for the whole York County, SC are determined, the 

emissions were allocated to the NAA only portion of the county. For nonroad sources, the Department 

decided that using human population was the best indicator of where these emissions may be occurring in 

the county. Therefore, the 2010 census tract data was obtained and a ratio of 0.7836 was calculated 

(78.36% of human population in York County, SC is found in the NAA). This ratio is almost identical to 

the ratio used in previous SIP/Conformity documents. The whole county ozone season daily emissions 

were multiplied by this ratio to estimate the average ozone season daily emissions for the NAA of York 

County.
Emissions Inventory and Documentation for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal Nonattainment 

Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 32 

V. 2011 EVENTS 

Table 11 summarizes the average ozone season day emissions for event sources in the NAA of York 

County, SC. 

Table 11: 2011 Actual Event Source Emissions for NAA of York County, SC 

SCC SCC Description NAA ozone season day NOX 

NAA ozone season day 

VOC 

2810001000 Wildfires 0.00 0.02 

2811015000 Prescribed Fires 0.04 0.40 

 GRAND TOTAL 0.04 0.42 

Events in 2011 include wild land fires, or WLFs. WLFs are generally defined as any non-structural fire 

that occurs in wild lands. Included in WLFs are the following types of fires: 

Prescribed (Rx) fire: Any fire ignited by management actions to meet specific objectives, generally 

related to the reduction of the biomass potentially available for wildfires. 

Wildfire (WF): An unplanned, unwanted WLF including unauthorized human-caused fires, escaped 

prescribed fire projects, or other inadvertent fire situations where the objective is to put the fire out. 

Wild land Fire Use (WFU): The application of appropriate management response to naturally-ignited 

WLFs to accomplish specific resource management objective in pre-designated areas outlined in fire 

management plans. In other words, an unplanned fire that is subsequently controlled and used as a Rx fire 

to meet specific objectives. This category existed in 2008, but no longer is used as a way to classify fires 

in 2011, and thus will not be discussed further in this section. 

For the dataset developed by EPA for the 2011 NEI, we used the following general equation to estimate 

wildfires and prescribed fires. Accurate estimates of fire emissions rely on accurate estimates of the terms 

in the equation below. 

Emissions = Area burned * Fuel Load Available * Fuel Consumed (Burn Efficiency) * Emission Factors 

SF2 estimates the “Area burned” term in the above equation, in conjunction with the Bluesky framework 

model that estimates the last three terms in the above equation. The “fuel load available” term is estimated 

using the Fuel Characteristic Classification System (FCCS) maps in the Bluesky model. The “fuel 

consumed” term is estimated from Bluesky using the CONSUME3 model, which predicts the fraction of 

fuel that burns based on many parameters including fuel moisture. Finally, the “Emission Factors” term is 

estimated in Bluesky using the Fire Emissions Prediction Simulator which relies on EFs from the 

literature apportioned by flaming and smoldering combustion. Since SF2 was recently developed, direct 

references to its development in conjunction with updated Bluesky methods are not yet available. 

York County, SC actual 2011 prescribed fires and wildfires were obtained from the SC Forestry 

Commission and were provided to EPA for use in the 2011 NEI calculations. 
Emissions Inventory and Documentation for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal Nonattainment 

Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 33 

The Department does not have ozone season emissions data for the NAA of York, County, SC, so the 

whole York County, SC annual emissions from the EPA’s 2011 NEI v1 was used as the starting point. 

The next step was to allocate the annual emissions down to an average ozone season day. No known 

allocation factors were available to do this so the annual emissions were allocated down to an average 

daily value by dividing by 365 (the number of days in the year 2011). The resulting average daily value 

was assumed to be an average ozone season daily value. 

 

Now that the average ozone season daily emissions for the whole York County, SC are determined, the 

emissions were allocated to the NAA only portion of the county. For event sources, the Department 

decided that using land area was the best indicator of where these emissions may be occurring in the 

county. The land area for whole York Co is 680.0 sq miles. The land area for the NAA of York Co is 

275 sq miles. The ratio of the NAA land area to the whole county is 0.40 or 40% (275 / 680.8). 

PART IV: ONROAD MOBILE SOURCE EMISSIONS INVENTORY DOCUMENTATION 

I. INTRODUCTION 

The following section contains onroad mobile inventory documentation for York County, SC, which is 

part of the Charlotte-Rock Hill, NC-SC Nonattainment Area. The inventory data is for calendar year 

2011. 

The York County, SC emissions inventory was developed by the EPA, with input from the Department, 

as part of the 2011 NEI effort. The 2011 EI was developed per the AERR reporting requirements. 

Emission estimates were calculated in tons per year, and converted to tons per average summer day for 

this submittal. 

II. ONROAD MOBILE SOURCE INVENTORY DEVELOPMENT 

Onroad mobile sources are sources of pollution caused by vehicles transporting goods or people on public 

roadways. This includes passenger cars, motorcycles, minivans, sport-utility vehicles, light-duty trucks, 

heavy-duty trucks, and buses. The sectors include emissions from parking areas as well as emissions 

while the vehicles are moving. 

EPA created a comprehensive set of mobile source input data, called the County Database files (CDB) as 

a starting point for the 2011 NEI. The Motor Vehicle Emissions Simulator (MOVES) 2010b is the 

current model used to estimate emissions for the onroad mobile source category. For the 2011 NEI effort, 

EPA encouraged state, local, and tribal agencies to submit model inputs, where applicable, rather than 

emissions, so that EPA could use those inputs beyond the 2011 NEI for future year projections. York 

County, SC’s 2011 onroad mobile inventory was developed using a combination of the 2011 EPA 

developed MOVES inputs and Department-provided county-specific 2011 input data. The Department 

did not have county specific information for all of the MOVES required inputs, but any data that was 

available was provided and used in the 2011 NEI effort. The following sections will detail the actual 

county specific inputs the Department provided for York County, SC, during the 2011 NEI effort. 
Emissions Inventory and Documentation for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal Nonattainment 

Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 34 

A. YORK COUNTY 2011 VEHICLE POPULATION INPUTS 

The sourceTypePopulation input file contains information for MOVES about the number of vehicles for 

each source type ID, or vehicle type. The Department collected a snapshot of the vehicle population in 

York County in early 2011, from the S.C. Department of Motor Vehicles (DMV). This snapshot included 

all registered vehicles in York County. The Department reviewed this information and made some 

corrections to exclude vehicles that do not actually have engines (i.e. trailers). Next, the data had to be 

organized into the MOVES source types. The DMV data originally had the registrations divided by the 

type of license plate they had and excluded information on the type of vehicle licensed. To split the total 

vehicles by the proper source type, the Department first did a MOVES run using default input data to 

extract the default ratios for the South Carolina 2011 vehicle populations by source type. These ratios 

were then applied to the York County actual total vehicle population value to get a population value for 

each source type. This information was then sent to EPA for the 2011 NEI effort and replaced the default 

CDB input for sourceTypePopulation. Table 12 shows the values calculated for the 2011 York County 

vehicle population. 

Table 12: York County, SC 2011 Vehicle Population 

 

B. YORK COUNTY 2011 VEHICLE MILES TRAVELED (VMT) INPUTS 

The VehicleTypeVMT input file contains information for MOVES about the VMT for each Highway 

Performance Management System (HPMS) vehicle ID. The Department collected 2011 York County 

VMT data from the South Carolina Department of Transportation (SCDOT). The SCDOT VMT data was 

available by road classification but the data was not available by HPMS vehicle type. To split the total 

VMT into HPMS vehicle type, the Department first did a MOVES run using default input data to extract 

the2011 default ratios of VMT per HPMS vehicle type for South Carolina. These default 2011 ratios were 

then applied to the York County actual total VMT value to get a 2011 VMT per HPMS source type. Table 

13 shows the values calculated for the 2011 York County VehicleTypeVMT. 

yearID sourceTypeID sourceTypePopulation 

2011 11 7185 

2011 21 85024 

2011 31 63959 

2011 32 21367 

2011 41 118 

2011 42 61 

2011 43 797 

2011 51 63 

2011 52 4503 

2011 53 598 

2011 54 1050 

2011 61 1132 

2011 62 1386 
Emissions Inventory and Documentation for York County, SC portion of Charlotte-Rock Hill, NC-SC Marginal Nonattainment 

Area (2008 NAAQS Ozone Standards) 

August 22, 2014 

Appendix A - Page 35 

Table 13: York County, SC 2011 Vehicle Miles Traveled 

HPMSVtypeID yearID HPMSBaseYearVMT baseYearOffNetVMT 

10 2011 10708956 

20 2011 1043726566 

30 2011 744272430 

40 2011 5552792 

50 2011 65443619 

60 2011 113435606 

C. AVERAGE SUMMER DAY AND NAA EMISSIONS ESTIMATE 

In order to generate the tons/avg summer day emission estimate, the Department chose to rely on 

emission modeling work already conducted by the EPA-Office of Air Quality Planning and Standards 

(EPA-OAQPS). The emissions modeling work was part of the EPA-OAQPS 2011 modeling platform 

effort, which will be used for the EPA’s proposed rule related to the transport of ozone. The emissions 

modeling conducted by the EPA-OAQPS generated hourly emissions estimates which were then 

summarized at the monthly level. This was accomplished by first running the annual 2011 NEI emissions 

through the temporal allocation process used by SMOKE. For some sectors like onroad mobile the 

temporalization is performed by computing emissions based on the monthly VMT. For Point Electric 

Generating Units (EGUs) day-specific emissions are input to SMOKE based on the application of profiles 

based on CEMS data in the region. 

With the monthly emissions, by sector, as a starting point, the values then had to be converted to a 

tons/avg summer day. The best way to accomplish this was to take the monthly emissions for the five 

summer months (May, June, July, August and September) and add them together to get a total summer 

emission estimate for each sector. This total summer estimate was then divided by the number of days in 

the 2011 summer (153 days) to generate an estimate for the 2011 average summer day per sector. 

Now that the average ozone season daily emissions for the whole York County, SC are determined, the 

emissions were allocated to the NAA only portion of the county. For onroad mobile sources, the 

Department decided that using VMT was the best indicator of where these emissions may be occurring in 

the county. The most current VMT for the NAA of York County was obtained. This happened to be for 

calendar year 2010. The VMT for the whole York Co for calendar year 2010 was also obtained from the 

SCDOT. The following details how the ratio of NAA York County VMT to whole York County was 

calculated: 

Whole York Co VMT in 2010 = 2,002,554,147.8 miles 

NAA of York Co VMT in 2010 = 1,953,015,289.0 miles 

Ratio of NAA to Whole County= 1,953,015,289.0 / 2,002,554,147.8 = 0.975 

NAA York 2011 NOx = (whole cnty daily rate) (NAA ratio) = NAA t/day 

 = 11.72 (0.975) = 11.43 tons/O3 day

NAA York 2011 VOC = (whole cnty daily rate) (NAA ratio) = NAA t/day 

 = 5.44 (0.975) = 5.30 tons/O3 day
Appendix B

Legal Authority
Revision to the South Carolina Air Quality Implementation Plan Appendix B – Page 2 

Marginal Nonattainment Area SIP Requirements 

for the York County portion of the Charlotte-Rock Hill NC-SC Nonattainment Area 

August 22, 2014

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Revision to the South Carolina Air Quality Implementation Plan Appendix B – Page 3 

Marginal Nonattainment Area SIP Requirements 

for the York County portion of the Charlotte-Rock Hill NC-SC Nonattainment Area 

August 22, 2014

LEGAL AUTHORITY1

No plan for attaining a goal, the attainment of which is dependent upon regulatory action, can be 

used with any degree of effectiveness unless the legal framework is strong. Consequently, the 

Requirements for Preparation, Adoption, and Submittal of Implementation Plans, 40 CFR 51, as 

amended, define the necessary statutory powers which must be immediately available to states to 

carry out the responsibility to the Clean Air Act. 

40 CFR 51.230 sets forth six specific requirements for State authority. The South Carolina 

Pollution Control Act, Act 1157 of 1970, as amended, S. C. Code Sections 48-1-10 thru - 350 

(1976), provides the State’s authority to respond to these requirements. The Attorney General of 

the State of South Carolina has given an opinion as to the adequacy of South Carolina laws, as 

follows: 

Legal Authority Required 

40 CFR 51 

Adequacy of 

S. C. Law S. C. Statutes Involved 

(a) “Adopt emission standards and limitations and 

any other measures necessary for attainment and 

maintenance of national standards.” 

Adequate S. C. Code Secs. 48-1-20, 48-1-50(23) 

(b) “Enforce applicable laws, regulations, & 

standards, and seek injunctive relief.” Adequate 

S. C. Code Sec. 48-1-50(1), (3), (4), (5), 

(11); Secs. 48-1-120, 48-1-130, 

48-1-210, 48-1-320, 48-1-330. 

(c) “Abate pollutant emissions on an emergency 

basis to prevent substantial endangerment to the 

health of persons, i.e., authority comparable to 

that available to the Administrator under section 

305 of the Act.” 

Adequate S. C. Code Sec. 48-1-290. 

(d) “Prevent construction, modification, or 

operation of a facility, building, structure, or 

installation, or combination thereof, which 

directly or indirectly results or may result in 

emissions of any air pollutant at any location 

which will prevent the attainment or maintenance 

of a national standard.” 

Adequate S. C. Code Sec. 48-1-50(5), (10); Secs. 

48-1-100, 48-1-110. 

(e) “Obtain Information necessary to determine 

whether air pollution sources are in compliance 

with applicable laws, regulations, and standards, 

Including authority to require recordkeeping and 

to make inspections and conduct tests of air 

pollution sources.” 

Adequate S. C. Code Sec. 48-1-50(10), (20), (22), 

(24). 

(f) “Require owners or operators of stationary 

sources to install, maintain, and use emission 

monitoring devices and to make periodic reports 

to the State on the nature and amounts of 

emissions from such stationary sources; also 

authority for the State to make such data available 

to the public as reported and as correlated with 

any applicable emission standards or limitations.” 

Adequate S. C. Code Secs. 48-1-50(22), 48-1-270. 

1

 Section 2 of the EPA-approved South Carolina Air Quality Implementation Plan (SIP), which defines the 

State’s statutory powers as required in 40 CFR 51.230. 
Revision to the South Carolina Air Quality Implementation Plan Appendix B – Page 4 

Marginal Nonattainment Area SIP Requirements 

for the York County portion of the Charlotte-Rock Hill NC-SC Nonattainment Area 

August 22, 2014

Public Hearings 

The South Carolina Pollution Control Act provides for notice and public hearings prior to action 

by the Board of Health and Environmental Control concerning adoption of regulations and 

standards, adoption or modification of final compliance dates, and other specified legal actions. 

Additionally, Act 176 of 1977 enacted by the South Carolina General Assembly requires, among 

other things, that at least thirty days public notice be given before adoption, amendment or repeal 

of any rule. It also requires that the substance of the intended action or a description of the 

subjects and issues involved be made known. While this act escapes the actual requirement for a 

public hearing in each case, the two Acts taken together do impose the requirement of a thirty 

days notice of public hearing, assuring compliance with the requirements of 40 CFR 51.102, as 

amended. 
Appendix C

Public Notice 

South Carolina State Register 

May 23, 2014 
Revision to the South Carolina Air Quality Implementation Plan Appendix C – Page 2 

Marginal Nonattainment Area SIP Requirements 

for the York County portion of the Charlotte-Rock Hill NC-SC Nonattainment Area 

August 22, 2014
Revision to the South Carolina Air Quality Implementation Plan Appendix C – Page 3 

Marginal Nonattainment Area SIP Requirements 

for the York County portion of the Charlotte-Rock Hill NC-SC Nonattainment Area 

August 22, 2014
Revision to the South Carolina Air Quality Implementation Plan Appendix D – Page 1 

Marginal Nonattainment Area SIP Requirements 

for the York County portion of the Charlotte-Rock Hill NC-SC Nonattainment Area 

August 22, 2014

Appendix D

EPA Comments of June 30, 2014 

and Department’s Response 

August 22, 2014 
Revision to the South Carolina Air Quality Implementation Plan Appendix D – Page 2 

Marginal Nonattainment Area SIP Requirements 

for the York County portion of the Charlotte-Rock Hill NC-SC Nonattainment Area 

August 22, 2014

U.S. Environmental Protection Agency's Comments on South Carolina's Prehearing 

Submission for Marginal Area Requirements for the 2008 8-Hour Ozone NAAQS 

I. Key Comments: 

• The prehearing submission contains emissions based on the entire York County area 

instead of the portion of the County that is designated nonattainment for the 2008 8-hour 

ozone NAAQS. The emissions inventory requirements in 182(a)(1) relate specifically to 

the nonattainment area, and as such the emissions should be developed in a consistent 

manner (i.e., partial county versus whole for York). To develop these partial county 

emissions, South Carolina can use an approach similar to the approach that the State used 

to develop the partial county emissions for this same area for the maintenance plan to 

support the redesignation to attainment for the 1997 8-hour ozone NAAQS. The EPA is 

available for further dialogue on the development of this emissions inventory to meet 

182(a)(1) requirements for the 2008 8-hour ozone NAAQS. 

Department Response:

In response to EPA’s comments, the emissions have been apportioned to the NAA of 

York County. This was accomplished in a similar manner as in the redesignation to 

attainment submittal for the 1997 8-hour ozone NAAQS. A description of how the whole 

county data was apportioned to the NAA only portion of York County can be found 

within the text of Appendix A. 

II. Other Comments: 

• A lengthy discussion of airport emissions is provided in Appendix A but no summer 

day emissions are listed in the table or text. Please explain and provide these emissions 

estimates and add to the point source totals in Table 1 or state that no emissions for this 

category exist in the partial county portion of the York ozone nonattainment area. 

Department Response:

Actual point source emissions for airports in the York NAA are found in Table 4, 

beginning on page 8. A new column has been added to the table to distinguish the 

industrial point sources from the airports. Values are given in tons per average summer 

day. Methodology for computing these values is explained by the first paragraph on page 

8. 

• The first paragraph of the nonpoint sources discussion in section II.A of Appendix A 

states that ERTAC provided many emissions that the EPA used in the estimation of 

emissions. The EPA recommends that this discussion specify how those emissions from 

the ERTAC process are pertinent to the partial county portion of the York nonattainment 

area and this SIP revision. 
Revision to the South Carolina Air Quality Implementation Plan Appendix D – Page 3 

Marginal Nonattainment Area SIP Requirements 

for the York County portion of the Charlotte-Rock Hill NC-SC Nonattainment Area 

August 22, 2014

Department Response:

As the text states on page 11, Section II.A, ERTAC collaborated with EPA and states to 

develop new methodologies/emission factors for several nonpoint categories for the 2011 

NEI effort. Since the 2011 NEI data was used as the basis for the development of the 

2011 NAA of York County nonpoint inventory, background information was provided 

for informational purposes. 

• The EPA assumes that all of the sources discussed in sections A.1-A.l0 are located in 

York County. The EPA recommends that the sections or a table provide the volatile 

organic compounds and nitrogen oxide emissions estimates that are associated with them 

for the partial county portion of the York nonattainment area. This will provide 

documentation to support the stationary area and nonroad mobile source category totals 

in Table 1 of Appendix A. 

Department Response:

Actual nonpoint source emissions for all categories discussed in sections A.1-A.10 are 

found in Table 5, beginning on page 12, in which they are listed by SCC designation. 

• It is unclear whether or not emissions from airports, locomotives and commercial 

marine vessels exist in the partial county portion of the York nonattainment area, even 

though the categories are discussed. Please clarify and detail the emissions by category. 

This will provide documentation to support the source category totals in Table 1 of 

Appendix A. 

Department Response:

Actual point source emissions for airports in the York NAA are now found in Table 4, 

beginning on page 8. Text on page 5, last paragraph, clarifies that there are no railyards 

in York County, so this category is not addressed. Nor are there commercial marine 

vessels, as explained on page 31, first paragraph, so this category is not addressed. 

• The EPA recommends that Appendix A detail the individual nonroad sources and their 

emissions that make up the nonroad totals in Table 1. 

Department Response:

Table 10, beginning on page 24, details the actual nonroad source emissions for the York 

NAA by SCC designation. 

• Page 5 CAA 182(a)(3)(B), last paragraph - The EPA recommends adding the 

underlined text to South Carolina's following sentence, "Annual emissions statement 

collection for the York nonattainment area has been ongoing as the 1997 ... " 

Department Response:

This change has been made on page 5. 
Appendix E

Public Notice 

SIP Revision 

South Carolina State Register 

August 22, 2014 
Revision to the South Carolina Air Quality Implementation Plan Appendix E – Page 2 

Marginal Nonattainment Area SIP Requirements 

for the York County portion of the Charlotte-Rock Hill NC-SC Nonattainment Area 

August 22, 2014
Revision to the South Carolina Air Quality Implementation Plan Appendix E – Page 3 

Marginal Nonattainment Area SIP Requirements 

for the York County portion of the Charlotte-Rock Hill NC-SC Nonattainment Area 

August 22, 2014