# Appendix D Modeling Results

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### Modeling Results i Supplement to the Attainment Demonstration for the Appendix D Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

# TABLE OF CONTENTS 1 INTRODUCTION ................................................................................................................ ........ 1 2 MODELED ATTAINMENT TEST ............................................................................................. 1 3 ADDITIONAL AIR QUALITY MODELING ANALYSIS ....................................................... 3 4 APPENDIX D.1 ................................................................................................................ ........... 8 

# LIST OF TABLES Table 2-1 USEPA’s Recommendati on for Defining “Nearby” Cells ................................................. 2 Table 2-2 Metrolina Attainment Test Results for 2011 ....................................................................... 3 Table 3-1 Total number of grid cells for the AQI Categories 2002 vs 2011. ...................................... 8 

# LIST OF FIGURES Figure 3-1 Area for which the air qu ality metrics were applied. ......................................................... 5 Figure 3-2 Persistence and Severi ty for the Metrolina Area. ............................................................... 6 Figure 3-3 Daily AQI counts for the Metrolina Area. .......................................................................... 6 Figure 3-4 Hourly AQI Count for the Metrolina Area. ........................................................................ 7 Figure 3-5 Percent Occurrence of Daily Maximum Code Yellow and Code Orange Grid Cells for the Metrolina Area. ........................................................................................................... ............ 7 Figure 3-6 Percent Occurrence of Hourly Maximum Code Yellow and Code Orange Grid Cells for the Metrolina Area. ........................................................................................................... ............ 8

### Modeling Results ii Supplement to the Attainment Demonstration for the Appendix D Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

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### Modeling Results 1 Supplement to the Attainment Demonstration for the Appendix D Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

# 1 INTRODUCTION This document is a supplement to the June 15, 2 007 attainment demonstration State Implementation Plan (SIP) submittal (re-submitted on November 12, 2009) which addresses the additional weight of evidence information requested by the United States Environmental Protection Agency (USEPA). The USEPA has requested supplemental information since the Metro lina nonattainment area did not have a three-year design value below the 1997 8- hour ozone standard for the three-year period including the 2009 data, yet did have clean data for 2009, i.e., the fourth highest values at all of the monitors were below the 1997 8-hour ozone st andard. The NCDAQ utilized 2011 modeling to support the June 2007 attainment dem onstration SIP and to provide weig ht of evidence that the area will attain the standard with a one year extension of the attainment date to June 15, 2011. The NCDAQ applied the attainment te st as outlined in the USEPA’s Guidance on the Use of Models and Other Analyses for Demonstrating Attainme nt of Air Quality Goals for Ozone, PM2.5 and Regional Haze , (referred to as Attainment Guidance) to the 2011 modeling results. This appendix includes the modeling result s from the 2011 modeling supporting Metrolina attainment of the 8-hour ozone standard by J une 15, 2011. Model attainment test results and additional modeling analysis is incl uded. Attached to the appendix is a detailed display of the 2011 modeling results comparable to Appendix K of the June 2007 attainment demonstration. 

# 2 MODELED AT TAINMENT TEST The modeled attainment test is th e practice of using an air quality model to simulate baseline (i.e., current) and future air quality. For the 8-hour ozone NAAQS, the baseline and future model estimates are used in a “relative” rather than “absolute” sense. Specifically, the ratio of the air quality model’s future to baseline predictions is calculated at each ozone monitoring site. These monitoring site-specific ratios ar e called relative response factor s (RRF). Future ozone design values (DVF) are then estimated at each monitor by multiplying the monitor-specific baseline ozone design value (DVB) by the modeled relative response factor for each monitor. If the resulting predicted site-specific DVFs are < 82 parts per b illion (ppb), a clear demo nstration of predicted attainment is shown. If the predicted DVFs are > 82 ppb and < 87 ppb, then a weight of evidence demonstration must be submitted that supports a demonstration of attainment. For DVFs > 87ppb, the Attainment Guidance states that more qualitative results are less likely to support a conclusion differing from the outcome of th e modeled attainment test. E quation 2-1 presents the modeled attainment test, applied at monitoring s ite “x” as described in Section 4.0 of the Attainment Guidance . (DVF) = (RRF) x (DVB) Equation 2-1 Where (DVB) = the baseline design va lue monitored at site "x", ppb = the average (of the three) design value periods which include the baseline inventory year (i.e. the averag e of the 2000-2002, 2001-2003, and 2002-2004 design values periods for the 2002 baseline inventory year).

### Modeling Results 2 Supplement to the Attainment Demonstration for the Appendix D Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## (RRF) = the ratio of the future 8-hour dail y maximum concentration predicted "nearby" a monitor (averaged over each day of the episode) to the current 8-hour daily maximum concentration predicted "nearby" the monitor (averaged over each day of the episode). (DVF) = the estimated future design value, ppb. It is important to consider an array of cells “nearby” a monitor rather than focusing on the individual cell containing the monitor. This allo ws for variations in th e model performance where the peak ozone may not occur in the grid cell that contains the monitor but rather nearby the monitor. Table 2-1 provides the USEPA's recommendations for defining “nearby” cells for grid systems having cells of various sizes. Since th e modeling was performed using a 12-kilometer grid resolution, the size of the arra y for “nearby” cells was 3 x 3. Table 2-1 USEPA’s Recommendation for Defining “Nearby” Cells Size of Cell (km) Size of the Array of “Nearby” Cells < 5 7 x 7 >5-8 5 x 5 >8-15 3 x 3

>15 1 x 1 The RRF is calculated by taking the ratio of th e mean future year modeling 8-hour ozone daily maximum to the mean baseline year modeling 8- hour ozone daily maximum “near” the monitor. (Equations 2-2). RRF = mean future yr. 8-hr daily max “near” monitor “x” Equation 2-2 mean baseline yr. 8-hr daily max “near” monitor “x” Section 14.1.1 of USEPA’s Attainment Guidance outlines the process for determining which days are used in the RRF calculation. The day selection process starts by identifying all the days in the baseline modeling that has a modeled daily maximu m 8-hour average ozone equa l to or greater than 85 ppb. If there are 10 or more days greater th an 85 ppb, then 85 ppb is used as the cutoff with those days used in the RRF calculation. If ther e are fewer than 10 days with a modeled daily maximum 8-hour average ozone equal to or greater than 85 ppb, then the threshold is reduced by 1 ppb until there are at least 10 days identified for use. If there are fewer than 10 days with a modeled daily maximum 8-hour average ozone equal to or greater than 70 ppb, then all days at 70 ppb and higher are used in the RRF calculation and consid eration of modeling anot her episode should be explored. The DVB, for purposes of the modeled at tainment test, is defined in the Attainment Guidance by one of four methods: 1. The design value period (i.e. the average 4th highest value for the 3-year period used to designate an area “nonattainment”, for this nonattainment designation, the period from 2001 to 2003)

### Modeling Results 3 Supplement to the Attainment Demonstration for the Appendix D Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## 2. The average 4th highest value for the 3-year period straddling the ba seline inventory year (e.g., the 2001-2003 design value period fo r the 2002 baseline inventory year) 3. The highest of the three design value periods which include the baseline inventory year (e.g., the 2000-2002, 2001-2003, 2002-2004 design value pe riods for a 2002 baseline inventory year) 4. The average of the three design value periods which straddle the base line inventory year (e.g., the average of the 2000-2002, 2001-2003, a nd 2002-2004 design value periods for a 2002 baseline inventory year) The USEPA recommends the fourth method (average of the three design va lue periods straddling the baseline year), which is the DVB shown in Ta ble 2-2 at each ozone monitoring site in the Metrolina region. Table 2-2 also lists the modeling results for 2011 by monito r in the Metrolina area. In the tables, the first column is the monitoring site, then the county of the monitoring s ite’s location, followed by the DVB used for the attainment test. The next seri es of columns are the numb er of days used in the calculation, the ozone level threshol d needed to reach at least 10 days for RRF, the calculated RRF, and finally the resulting DVF for the 2011. Table 2-2 Metrolina Attainme nt Test Results for 2011 Monitoring Site County DVB (ppb) Number of Days used

in RRF Ozone Threshold (ppb) RRF DVF (ppb) Arrowood Mecklenburg 84.7 15 85 0.854 72 County Line Mecklenburg 97.3 12 85 0.846 82 Crouse Lincoln 90.7 10 83 0.829 75 Enochville Rowan 97.0 13 85 0.837 81 Garinger (Plaza) Mecklenburg 95.3 20 85 0.862 82 Monroe Union 87.0 12 78 0.858 74 Rockwell Rowan 97.3 10 83 0.837 81 York York, SC 83.0 13 81 0.841 69 As can be seen in the table above , all monitors in the Metrolina area have pr edicted design values below the standard. These results support NCDAQ’s assertion that the air quality is expected to continue to improve as the NOx emissions continue to decline from the point and mobile sources. These results provide additional weight of eviden ce that the area will attain the 1997 8-hour ozone standard by June 15, 2011. 

# 3 ADDITIONAL AIR QUALITY MODELING ANALYSIS In Section 7.0 of the Attainment Guidance, various aspects of air quality models, modeled performance, and uncertainties associated wi th the length of modeled episodes and limited observational datasets are described. A series of three additional air quality modeling outputs or metrics is recommended to provide assurance the modeled demonstration indicates attainment.

### Modeling Results 4 Supplement to the Attainment Demonstration for the Appendix D Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## These metrics look at the relative change between the ba seline and future years modeling and help to demonstrate how widespread the improvement in air quality is expected to be in the future. Although the final guidance did not recommend percentage cut points that corresponds to supportive weight of evidence, an earlier draft version of the Attainment Guidance recommends that the metrics should be at least 80% or higher. As described in Section 7.1 of the Attainment Guidance , the modeling data for the area displayed in Figure 3-1 from the 2002 and 2011 modeling were applied to the following metrics: 1. Relative change in surface grid-hours greater than 84 ppb . This metric is termed Persistence-Hour and is defined as the num ber of grid-cells in a given region with predicted hourly 8-hour ozone concentrations greater than 84 ppb. The relative change in Persistence-Hour is presented as a percen t reduction computed for the modeling period May through September from the baseline year case to the future year case. 2. Relative change in the number of grid cells with predicted 8-hour daily maxima greater than 84 ppb. This metric is termed Persistence-Daily metric and is similar to Persistence-Hr, but uses the modeled da ily maximum 8-hour ozone concentrations greater than 84 ppb instead of the hourly 8- hour ozone concentrations. The relative change in Persistence-Daily is also presen ted as a percent reduc tion computed for the modeling period May through September from the baseline year case to the future year case. 3. Relative change in th e sum of hourly predicti ons greater than 84 ppb. This metric is termed Severity-Hour and is defined as the su m of all grid-cells w ith predicted hourly 8- hour ozone concentrations greater than 84 ppb. Given the definition of Persistence, this Severity could be considered as a weighted form of the Persistence metric. The relative change in Severity is also presented as a percent reduction computed for the modeling period May through September from the baselin e year case to the future year case. In addition to the three recommended metrics, tw o additional metrics were computed to create a comprehensive corroborative analysis. The two additional metrics are: 4. Relative change in the sum of the predicted 8-hour daily maxima greater than 84 ppb . Severity-Daily metric is similar to Severi ty-Hour, but uses the modeled daily maximum 8-hour ozone concentrations greater than 84 ppb instead of the hourly 8-hour ozone concentrations. The relative change in Seve rity-Daily is also presented as a percent reduction computed for the modeling period May through September from the baseline year case to the future year case. 5. Air Quality Index (AQI) counts. The AQI Counts metric is a count of the number of grid-cells with predicted maximum 8-hour oz one concentrations sorted within each of the Code Green, Yellow, Orange and Red categories, as defined by the USEPA's AQI Index. As with the persiste nce and severity metrics, the AQI counts metric can be applied to both hourly and daily maximum 8-hour ozone concentrations. AQI Counts are presented as percentages of the total num ber of grid-cells w ithin the study region.

### Modeling Results 5 Supplement to the Attainment Demonstration for the Appendix D Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## The metrics described above were applied to the m odeling results for just of the nonattainment area. Below is the region for which this modeling data was extracted for the 2002 baseline and the 2011 modeling runs.

Figure 3-1 Area for which the air quality metrics were applied. The results from each of the five air quality mode ling metric calculations demonstrated significant reductions of greater than 90% in the 2011 future year air quality modeling for days that modeled above the NAAQS in the Metrolin a nonattainment area. Each metr ic demonstrated substantial reductions for 2011. It is important to note that the relative reductio ns in all metrics well surpassed the draft version of the Attainment Guidance recommendation of 80% for these particular calculations. Figure 3-2 presents the relative re ductions calculated in the first f our metrics described above. The left 2 bars are the Persistence-H our and Persistence-Daily reducti ons, and the right 2 bars are the Severity-Hour and Severity-Daily reductions. The 2011 modeling results demonstrate a 97.4% reduction in persistence of hourly maximum ozon e and 95.9% reduction in persistence of daily maximum ozone. The severity reductions for 2011 are equally on a similar scale of 97.5% and 96.1% reduction for hourly and dail y maximum ozone, respectively.

### Modeling Results 6 Supplement to the Attainment Demonstration for the Appendix D Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 60 65 70 75 80 85 90 95 100

Persistance Severity% Reduction 

## % Reduction in Persistance (# Grid Cells) and Severity (Sum C ij_85 

## ) of Hourly & Daily Max O 3 

## 2002 vs 2011

Hourly Daily



## Figure 3-2 Persistence and Severi ty for the Metrolina Area. Equating the 95.9% relative reduction in the da ily maximum ozone persis tence to AQI counts, Figure 3-3 demonstrates a drop from 317 grids cells in the Code Orange and Red levels in 2002 baseline modeling to only 13 grid cells in 2011 futu re modeling. Additionally, the number of grid cells Code Yellow and greater is reduced by 65.0% from 3,503 grid cells in 2002 to 1,227 grid cells in 2011.

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

Daily 2002 Daily 2011% Grid Cells in Region 

## Daily 8-hr AQI Counts (2002 vs 2011)

Orange Yellow Green



## Figure 3-3 Daily AQI counts for the Metrolina Area. The hourly AQI counts are equally encouraging. Figure 3-4 pres ents the 97.4% relative reduction in hourly persistence in terms of the AQI counts for 2011. This reduction tr anslates to a reduction from 1,195 hourly grid cells in the Code Orange and Red levels in 2002 to only 31 hourly gird cells

### Modeling Results 7 Supplement to the Attainment Demonstration for the Appendix D Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## in 2011. The reduction in hourly grid cell Code Ye llow and greater is equally impressive with a reduction from 23,336 to 5874. This is a 74.8% reduction from 2002 to 2011.

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

Hourly 2002 Hourly 2011% Grid Cells in Region 

## Hourly 8-hr AQI Counts (2002 vs 2011)

Orange Yellow Green



## Figure 3-4 Hourly AQI Count for the Metrolina Area. The tremendous improvements in air quality from the 2002 baseline modeli ng to the 2011 modeling can further be illustrated by looking at just the percentage of occurrence of the Code Yellow and Orange grid cells throughout the Metrolina area. Figures 3-5 and 3-6 present these metrics for 2011 in terms of the daily and hourly perc entage of occurren ce, respectively.

0 5 10 15 20 25 30 35 40 45 50

Daily 2002 Daily 2011% Occurence in Region 

## % Occurence of Daily Max Yellow and Orange (2002 vs 2011)

Orange Yellow



## Figure 3-5 Percent Occurrence of Daily Maximum Code Yellow and Code Orange Grid Cells for the Metrolina Area.

### Modeling Results 8 Supplement to the Attainment Demonstration for the Appendix D Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 0 2 4 6 8 10 12 14

Hourly 2002 Hourly 2011% Occurence in Region 

## % Occurence of Hourly Max Yellow and Orange (2002 vs 2011)

Orange Yellow



## Figure 3-6 Percent Occurrence of Hourly Maximum Code Yellow and Code Orange Grid Cells for the Metrolina Area. Finally, all of the AQI grid cell counts used thro ughout this section and displayed in Figures 3-3 through 3-6 are summarized below. Table 3-1 contains all of th e grid cell counts for both the Hourly and Daily AQI count analys es for the 2002 and 2011 modeling. Table 3-1 Total number of grid cell s for the AQI Categories 2002 vs 2011.

The air quality modeling metric analyses for the Metrolina nonattainment area demonstrates relative reductions well beyond the recommended 80% mark th at is considered appropriate for concluding that a proposed strategy would m eet the 8-hour ozone NAAQS. The NCDAQ believes that the supplem ental analysis provided in this section is further evidence that the Metrolina nonattainment area will attain the 8-hour ozone NAAQS by June 15, 2011. 

# 4 APPENDIX D.1 Attached to this Appendix is additional docum entation on the modeling results including spatial plots of 8-hour maximum ozone for the state on days used to calculate the relative reduction factor and tables indicating the number of cells in each AQI color category. Daily 2002 Daily 2011 Hourly 2002 Hourly 2011 Green 4401 6677 166330 183822 Yellow 3186 1214 22171 5843 Orange 317 13 1195 31 total 7904 7904 189696 189696

# Appendix D.1 2011 Modeling Results

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### 2011 Modeling Results i Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

# Table Of Contents Table Of Contents ............................................................................................................. ............... i List Of Figures ............................................................................................................... .................. i List Of Tables ................................................................................................................ ................. ii Introduction .................................................................................................................. ................... 1 

# List Of Figures Figure 1 Metrolina Nonattainment Area Domain Mask ................................................................ 1 Figure 2.1 2011 Modeled Daily Max 8-hour Ozone For May 23 rd 

## ............................................... 3 Figure 3.1 2011 Modeled Daily Max 8-hour Ozone For May 24 th 

## ................................................ 4 Figure 4.1 2011 Modeled Daily Max 8-hour Ozone For May 25 th 

## ................................................ 5 Figure 5.1 2011 Modeled Daily Max 8-hour Ozone For May 26 th 

## ................................................ 6 Figure 6.1 2011 Modeled Daily Max 8-hour Ozone For June 1 st 

## .................................................. 7 Figure 7.1 2011 Modeled Daily Max 8-hour Ozone For June 2 nd 

## ................................................. 8 Figure 8.1 2011 Modeled Daily Max 8-hour Ozone For June 3 rd 

## ................................................. 9 Figure 9.1 2011 Modeled Daily Max 8-hour Ozone For June 9 th 

## ................................................ 10 Figure 10.1 2011 Modeled Daily Max 8-hour Ozone For June 10 th 

## ............................................ 11 Figure 11.1 2011 Modeled Daily Max 8-hour Ozone For June 11 th 

## ............................................ 12 Figure 12.1 2011 Modeled Daily Max 8-hour Ozone For June 12 th 

## ............................................ 13 Figure 13.1 2011 Modeled Daily Max 8-hour Ozone For June 13 th 

## ............................................ 14 Figure 14.1 2011 Modeled Daily Max 8-hour Ozone For June 30 th 

## ............................................ 15 Figure 15.1 2011 Modeled Daily Max 8-hour Ozone For July 1 st 

## ............................................... 16 Figure 16.1 2011 Modeled Daily Max 8-hour Ozone For July 2 nd 

## .............................................. 17 Figure 17.1 2011 Modeled Daily Max 8-hour Ozone For July 3 rd 

## .............................................. 18 Figure 18.1 2011 Modeled Daily Max 8-hour Ozone For July 4 th 

## .............................................. 19 Figure 19.1 2011 Modeled Daily Max 8-hour Ozone For July 5 th 

## .............................................. 20 Figure 20.1 2011 Modeled Daily Max 8-hour Ozone For July 6 th 

## .............................................. 21 Figure 21.1 2011 Modeled Daily Max 8-hour Ozone For July 8 th 

## .............................................. 22 Figure 22.1 2011 Modeled Daily Max 8-hour Ozone For July 9 th 

## .............................................. 23 Figure 23.1 2011 Modeled Daily Max 8-hour Ozone For July 16 th 

## ............................................ 24 Figure 24.1 2011 Modeled Daily Max 8-hour Ozone For July 17 th 

## ............................................ 25 Figure 25.1 2011 Modeled Daily Max 8-hour Ozone For July 21 st 

## ............................................. 26 Figure 26.1 2011 Modeled Daily Max 8-hour Ozone For August 1 st 

## .......................................... 27 Figure 27.1 2011 Modeled Daily Max 8-hour Ozone For August 2 nd 

## ......................................... 28 Figure 28.1 2011 Modeled Daily Max 8-hour Ozone For August 5 th 

## ......................................... 29 Figure 29.1 2011 Modeled Daily Max 8-hour Ozone For August 6 th 

## ......................................... 30 Figure 30.1 2011 Modeled Daily Max 8-hour Ozone For August 9 th 

## ......................................... 31 Figure 31.1 2011 Modeled Daily Max 8-hour Ozone For August 10 th 

## ....................................... 32 Figure 32.1 2011 Modeled Daily Max 8-hour Ozone For August 11 th 

## ....................................... 33 Figure 33.1 2011 Modeled Daily Max 8-hour Ozone For August 12 th 

## ....................................... 34 Figure 34.1 2011 Modeled Daily Max 8-hour Ozone For August 21 st 

## ........................................ 35 Figure 35.1 2011 Modeled Daily Max 8-hour Ozone For August 23 rd 

## ....................................... 36

### 2011 Modeling Results ii Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

# List Of Tables Table 2.1 AQI Count Across Metrolina Domain Mask For May 23 rd 

## ........................................... 3 Table 2.2 Table Of Monitors Using May 23 rd 

## As An RRF Day .................................................... 3 Table 3.1 AQI Count Across Metrolina Domain Mask For May 24 th 

## ........................................... 4 Table 3.2 Table Of Monitors Using May 24 th 

## As An RRF Day .................................................... 4 Table 4.1 AQI Count Across Metrolina Domain Mask For May 25 th 

## ........................................... 5 Table 4.2 Table Of Monitors Using May 25 th 

## As An RRF Day .................................................... 5 Table 5.1 AQI Count Across Metrolina Domain Mask For May 26 th 

## ........................................... 6 Table 5.2 Table Of Monitors Using May 26 th 

## As An RRF Day .................................................... 6 Table 6.1 AQI Count Across Metrolina Domain Mask For June 1st ............................................ 7 Table 6.2 Table Of Monitors Using June 1 st 

## As An RRF Day ...................................................... 7 Table 7.1 AQI Count Across Metrolina Domain Mask For June 2 nd 

## ............................................ 8 Table 7.2 Table Of Monitors Using June 2 nd 

## As An RRF Day ..................................................... 8 Table 8.1 AQI Count Across Metrolina Domain Mask For June 3 rd 

## ............................................. 9 Table 8.2 Table Of Monitors Using June 3 rd 

## As An RRF Day ...................................................... 9 Table 9.1 AQI Count Across Metrolina Domain Mask For June 9 th 

## ........................................... 10 Table 9.2 Table Of Monitors Using June 9 th 

## As An RRF Day .................................................... 10 Table 10.1 AQI Count Across Metrolina Domain Mask For June 10 th 

## ....................................... 11 Table 10.2 Table Of Monitors Using June 10 th 

## As An RRF Day ................................................ 11 Table 11.1 AQI Count Across Metrolina Domain Mask For June 11 th 

## ....................................... 12 Table 11.2 Table Of Monitors Using June 11 th 

## As An RRF Day ................................................ 12 Table 12.1 AQI Count Across Metrolina Domain Mask For June 12 th 

## ....................................... 13 Table 12.2 Table Of Monitors Using June 12 th 

## As An RRF Day ................................................ 13 Table 13.1 AQI Count Across Metrolina Domain Mask For June 13 th 

## ....................................... 14 Table 13.2 Table Of Monitors Using June 13 th 

## As An RRF Day ................................................ 14 Table 14.1 AQI Count Across Metrolina Domain Mask For June 30 th 

## ....................................... 15 Table 14.2 Table Of Monitors Using June 30 th 

## As An RRF Day ................................................ 15 Table 15.1 AQI Count Across Metrolina Domain Mask For July 1 st 

## .......................................... 16 Table 15.2 Table Of Monitors Using July 1 st 

## As An RRF Day ................................................... 16 Table 16.1 AQI Count Across Metrolina Domain Mask For July 2 nd 

## ......................................... 17 Table 16.2 Table Of Monitors Using July 2 nd 

## As An RRF Day .................................................. 17 Table 17.1 AQI Count Across Metrolina Domain Mask For July 3 rd 

## ......................................... 18 Table 17.2 Table Of Monitors Using July 3 rd 

## As An RRF Day .................................................. 18 Table 18.1 AQI Count Across Metrolina Domain Mask For July 4 th 

## .......................................... 19 Table 18.2 Table Of Monitors Using July 4 th 

## As An RRF Day ................................................... 19 Table 19.1 AQI Count Across Metrolina Domain Mask For July 5 th 

## .......................................... 20 Table 19.2 Table Of Monitors Using July 5 th 

## As An RRF Day ................................................... 20 Table 20.1 AQI Count Across Metrolina Domain Mask For July 6 th 

## .......................................... 21 Table 20.2 Table Of Monitors Using July 6 th 

## As An RRF Day ................................................... 21 Table 21.1 AQI Count Across Metrolina Domain Mask For July 8 th 

## .......................................... 22 Table 21.2 Table Of Monitors Using July 8 th 

## As An RRF Day ................................................... 22 Table 22.1 AQI Count Across Metrolina Domain Mask For July 9 th 

## .......................................... 23 Table 22.2 Table Of Monitors Using July 9 th 

## As An RRF Day ................................................... 23

### 2011 Modeling Results iii Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Table 23.1 AQI Count Across Metrolina Domain Mask For July 16 th 

## ........................................ 24 Table 23.2 Table Of Monitors Using July 16 th 

## As An RRF Day ................................................. 24 Table 24.1 AQI Count Across Metrolina Domain Mask For July 17 th 

## ........................................ 25 Table 24.2 Table Of Monitors Using July 17 th 

## As An RRF Day ................................................. 25 Table 25.1 AQI Count Across Metrolina Domain Mask For July 21 st 

## ........................................ 26 Table 25.2 Table Of Monitors Using July 21 st 

## As An RRF Day ................................................. 26 Table 26.1 AQI Count Across Metrolina Domain Mask For August 1 st 

## ..................................... 27 Table 26.2 Table Of Monitors Using August 1 st 

## As An RRF Day .............................................. 27 Table 27.1 AQI Count Across Metrolina Domain Mask For August 2 nd 

## .................................... 28 Table 27.2 Table Of Monitors Using August 2 nd 

## As An RRF Day ............................................. 28 Table 28.1 AQI Count Across Metrolina Domain Mask For August 5 th 

## ..................................... 29 Table 28.2 Table Of Monitors Using August 5 th 

## As An RRF Day .............................................. 29 Table 29.1 AQI Count Across Metrolina Domain Mask For August 6 th 

## ..................................... 30 Table 29.2 Table Of Monitors Using August 6 th 

## As An RRF Day .............................................. 30 Table 30.1 AQI Count Across Metrolina Domain Mask For August 9 th 

## ..................................... 31 Table 30.2 Table Of Monitors Using August 9 th 

## As An RRF Day .............................................. 31 Table 31.1 AQI Count Across Metrolina Domain Mask For August 10 th 

## ................................... 32 Table 31.2 Table Of Monitors Using August 10 th 

## As An RRF Day ............................................ 32 Table 32.1 AQI Count Across Metrolina Domain Mask For August 11 th 

## ................................... 33 Table 32.2 Table Of Monitors Using August 11 th 

## As An RRF Day ............................................ 33 Table 33.1 AQI Count Across Metrolina Domain Mask For August 12 th 

## ................................... 34 Table 33.2 Table Of Monitors Using August 12 th 

## As An RRF Day ............................................ 34 Table 34.1 AQI Count Across Metrolina Domain Mask For August 21 st 

## ................................... 35 Table 34.2 Table Of Monitors Using August 21 st 

## As An RRF Day ............................................ 35 Table 35.1 AQI Count Across Metrolina Domain Mask For August 23 rd 

## ................................... 36 Table 35.2 Table Of Monitors Using August 23 rd 

## As An RRF Day ............................................ 36 Table 36 Combined Table Of Days Used In The RRF Calculations By Monitor ....................... 37 Table 37 Daily RRF Values for Days Used in Attainment Test RRF ......................................... 38 Table 38 Raw CMAQ Daily 8-Hour Ozone Maximum for 2002 Base Year Used in Attainment Test RRF ...................................................................................................................... ......... 39 Table 39 Raw CMAQ Daily 8-Hour Ozone Maximum for 2011 Future Year Used in Attainment Test RRF ...................................................................................................................... ......... 40

### 2011 Modeling Results iv Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

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### 2011 Modeling Results 1 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

# Introduction The 2011 air quality modeling results for the 12-kilometer (km) grid modeling domain are presented below for the Supplement to the June 15, 2007 submitted North Carolina 8-Hour Ozone Attainment Demonstration for the Charlotte -Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area (referred to as the Metrolina ar ea). These modeling results are displayed as a series of daily maximum 8-hour ozone plots for the 2011 modeling. Only the 34 modeling days that were used in determining the relative response fa ctors (RRFs) at any of the Metrolina area ozone monitors are presented here. The 2002 modelin g plots can found Appendix K of the referenced June 15, 2007 attainment demonstration. The color scale used for these plots are based on the Air Quality Index (AQI) where orange and red colora tions indicate modeled exceedances of the 8-hour ozone National Ambient Air Quality Standard. A table is presented to further detail the change in number of grid cells between the respective AQI color codes from 2002 to 2011. The grid cell counts are only calculated for a domain mask that represents the Metr olina nonattainment area. This domain ma sk is presented in Figure 1 below.

Figure 1 Metrolina Nonattainment Area Domain Mask A second table is included below each modeling day to list the monitors that use that particular day in their respective RRF calculation for 2011. The comparison of the of the 2011 modeling plots to the respective 2002 modeling plots de termines the relative response for each of the RRF days. After all 34 modeling days are pr esented, a series of RRF summary tables are included. Table 36 summarizes the days used in the monitor speci fic RRF calculation for the 2011 modeling. This summary table redisplays the information already pr esented in the second table found after each of

### 2011 Modeling Results 2 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## the modeling day plot pages for convenience. The 2011 based daily RRF calculations are summarized in Table 37and use the day specifi c maximum 8-hour ozone concentration modeled near each ozone monitor from the 2002 modeling (Table 38) and the 2011 modeling (Table 39). It should be noted that a minor a lteration in the spatial distribution of the emissions inventory in the 2011 air quality modeling required a rerun of the ai r quality model for the 2002 baseline year to appropriately calculate the 2011 based RRFs wit hout introducing any modeling bias due to the minor emissions inventory spatial distribution alteration. These differences were so minor that the second or revised set of 2002 modeling day plots was not included in this atta chment as the spatial pattern and magnitude of ozone concentrations we re generally indistinguishable to the 2002 plots already displayed throughout the referenced Appendix K.

### 2011 Modeling Results 3 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 2.1 2011 Modeled Daily Max 8-hour Ozone For May 23 rd 

## Table 2.1 AQI Count Across Metrolina Domain Mask For May 23 rd 

### Day 143 2002 2009 2011

Green Cells 2 5 11 Yellow Cells 74 71 65 Orange Cells 000 Red Cells 000 

## Table 2.2 Table Of Monitors Using May 23 rd 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 143 23 ‐ May No No No No No No No Yes 1

### 2011 Modeling Results 4 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 3.1 2011 Modeled Daily Max 8-hour Ozone For May 24 th



## Table 3.1 AQI Count Across Metrolina Domain Mask For May 24 th 

### Day 144 2002 2009 2011

Green Cells 0 6 17 Yellow Cells 76 70 59 Orange Cells 000 Red Cells 000



## Table 3.2 Table Of Monitors Using May 24 th 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 

### 144 24 ‐ May No No No No Yes No Yes No 2

### 2011 Modeling Results 5 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 4.1 2011 Modeled Daily Max 8-hour Ozone For May 25 th 

## Table 4.1 AQI Count Across Metrolina Domain Mask For May 25 th 

### Day 145 2002 2009 2011

Green Cells 035 Yellow Cells 58 71 71 Orange Cells 18 2 0 Red Cells 000 

## Table 4.2 Table Of Monitors Using May 25 th 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 145 25 ‐ May Yes Yes Yes Yes No Yes Yes No 6

### 2011 Modeling Results 6 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 5.1 2011 Modeled Daily Max 8-hour Ozone For May 26 th 

## Table 5.1 AQI Count Across Metrolina Domain Mask For May 26 th 

### Day 146 2002 2009 2011

Green Cells 3 18 22 Yellow Cells 70 58 54 Orange Cells 300 Red Cells 000 

## Table 5.2 Table Of Monitors Using May 26 th 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 146 26 ‐ May No Yes No Yes No Yes No No 3

### 2011 Modeling Results 7 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 6.1 2011 Modeled Daily Max 8-hour Ozone For June 1 st 

## Table 6.1 AQI Count Across Metrolina Domain Mask For June 1st Day 152 2002 2009 2011

Green Cells 35 62 68 Yellow Cells 41 14 8 Orange Cells 000 Red Cells 000 

## Table 6.2 Table Of Monitors Using June 1 st 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 152 1 ‐ Jun No No No No No No Yes No 1

### 2011 Modeling Results 8 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 7.1 2011 Modeled Daily Max 8-hour Ozone For June 2 nd 

## Table 7.1 AQI Count Across Metrolina Domain Mask For June 2 nd 

### Day 153 2002 2009 2011

Green Cells 18 59 66 Yellow Cells 58 17 10 Orange Cells 000 Red Cells 000 

## Table 7.2 Table Of Monitors Using June 2 nd 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 153 2 ‐ Jun No No No No No No Yes No 1

### 2011 Modeling Results 9 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 8.1 2011 Modeled Daily Max 8-hour Ozone For June 3 rd 

## Table 8.1 AQI Count Across Metrolina Domain Mask For June 3 rd 

### Day 154 2002 2009 2011

Green Cells 1 37 45 Yellow Cells 57 37 31 Orange Cells 18 2 0 Red Cells 000 

## Table 8.2 Table Of Monitors Using June 3 rd 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 154 3 ‐ Jun Yes Yes Yes No No No No Yes 4

### 2011 Modeling Results 10 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 9.1 2011 Modeled Daily Max 8-hour Ozone For June 9 th 

## Table 9.1 AQI Count Across Metrolina Domain Mask For June 9 th 

### Day 160 2002 2009 2011

Green Cells 27 40 42 Yellow Cells 47 36 34 Orange Cells 200 Red Cells 000 

## Table 9.2 Table Of Monitors Using June 9 th 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 160 9 ‐ Jun Yes No No No No No No No 1

### 2011 Modeling Results 11 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 10.1 2011 Modeled Daily Max 8-hour Ozone For June 10 th 

## Table 10.1 AQI Count Across Metrolina Domain Mask For June 10 th 

### Day 161 2002 2009 2011

Green Cells 0 7 10 Yellow Cells 39 54 62 Orange Cells 37 15 4 Red Cells 000 

## Table 10.2 Table Of Monitors Using June 10 th 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 161 10 ‐ Jun Yes Yes Yes Yes Yes Yes No Yes 7

### 2011 Modeling Results 12 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 11.1 2011 Modeled Daily Max 8-hour Ozone For June 11 th 

## Table 11.1 AQI Count Across Metrolina Domain Mask For June 11 th 

### Day 162 2002 2009 2011

Green Cells 10 21 22 Yellow Cells 43 45 49 Orange Cells 23 10 5 Red Cells 000 

## Table 11.2 Table Of Monitors Using June 11 th 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 162 11 ‐ Jun Yes Yes No Yes Yes Yes No No 5

### 2011 Modeling Results 13 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 12.1 2011 Modeled Daily Max 8-hour Ozone For June 12 th 

## Table 12.1 AQI Count Across Metrolina Domain Mask For June 12 th 

### Day 163 2002 2009 2011

Green Cells 0 7 14 Yellow Cells 44 62 60 Orange Cells 32 7 2 Red Cells 000 

## Table 12.2 Table Of Monitors Using June 12 th 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 163 12 ‐ Jun No Yes Yes Yes Yes Yes Yes No 6

### 2011 Modeling Results 14 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 13.1 2011 Modeled Daily Max 8-hour Ozone For June 13 th 

## Table 13.1 AQI Count Across Metrolina Domain Mask For June 13 th 

### Day 164 2002 2009 2011

Green Cells 049 Yellow Cells 58 72 67 Orange Cells 18 0 0 Red Cells 000 

## Table 13.2 Table Of Monitors Using June 13 th 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 164 13 ‐ Jun No Yes No Yes Yes Yes Yes No 5

### 2011 Modeling Results 15 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 14.1 2011 Modeled Daily Max 8-hour Ozone For June 30 th 

## Table 14.1 AQI Count Across Metrolina Domain Mask For June 30 th 

### Day 181 2002 2009 2011

Green Cells 31 66 71 Yellow Cells 45 10 5 Orange Cells 000 Red Cells 000 

## Table 14.2 Table Of Monitors Using June 30 th 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 181 30 ‐ Jun No No No No No No No Yes 1

### 2011 Modeling Results 16 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 15.1 2011 Modeled Daily Max 8-hour Ozone For July 1 st 

## Table 15.1 AQI Count Across Metrolina Domain Mask For July 1 st 

### Day 182 2002 2009 2011

Green Cells 18 43 61 Yellow Cells 57 33 15 Orange Cells 100 Red Cells 000 

## Table 15.2 Table Of Monitors Using July 1 st 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 182 1 ‐ Jul No No No No No Yes No No 1

### 2011 Modeling Results 17 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 16.1 2011 Modeled Daily Max 8-hour Ozone For July 2 nd 

## Table 16.1 AQI Count Across Metrolina Domain Mask For July 2 nd 

### Day 183 2002 2009 2011

Green Cells 9 43 61 Yellow Cells 61 33 15 Orange Cells 600 Red Cells 000 

## Table 16.2 Table Of Monitors Using July 2 nd 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 183 2 ‐ Jul No Yes No No No No No No 1

### 2011 Modeling Results 18 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 17.1 2011 Modeled Daily Max 8-hour Ozone For July 3 rd 

## Table 17.1 AQI Count Across Metrolina Domain Mask For July 3 rd 

### Day 184 2002 2009 2011

Green Cells 0 39 45 Yellow Cells 67 37 31 Orange Cells 900 Red Cells 000 

## Table 17.2 Table Of Monitors Using July 3 rd 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 184 3 ‐ Jul Yes Yes Yes No No No Yes No 4

### 2011 Modeling Results 19 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 18.1 2011 Modeled Daily Max 8-hour Ozone For July 4 th 

## Table 18.1 AQI Count Across Metrolina Domain Mask For July 4 th 

### Day 185 2002 2009 2011

Green Cells 0 32 45 Yellow Cells 62 44 31 Orange Cells 14 0 0 Red Cells 000 

## Table 18.2 Table Of Monitors Using July 4 th 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 185 4 ‐ Jul No Yes Yes Yes No Yes Yes Yes 6

### 2011 Modeling Results 20 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 19.1 2011 Modeled Daily Max 8-hour Ozone For July 5 th 

## Table 19.1 AQI Count Across Metrolina Domain Mask For July 5 th 

### Day 186 2002 2009 2011

Green Cells 0 34 46 Yellow Cells 65 42 30 Orange Cells 11 0 0 Red Cells 000 

## Table 19.2 Table Of Monitors Using July 5 th 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 186 5 ‐ Jul No Yes Yes Yes Yes Yes No Yes 6

### 2011 Modeling Results 21 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 20.1 2011 Modeled Daily Max 8-hour Ozone For July 6 th 

## Table 20.1 AQI Count Across Metrolina Domain Mask For July 6 th 

### Day 187 2002 2009 2011

Green Cells 2 29 47 Yellow Cells 63 47 29 Orange Cells 11 0 0 Red Cells 000 

## Table 20.2 Table Of Monitors Using July 6 th 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 187 6 ‐ Jul Yes Yes Yes No No No No Yes 4

### 2011 Modeling Results 22 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 21.1 2011 Modeled Daily Max 8-hour Ozone For July 8 th 

## Table 21.1 AQI Count Across Metrolina Domain Mask For July 8 th 

### Day 189 2002 2009 2011

Green Cells 1 27 35 Yellow Cells 56 47 41 Orange Cells 19 2 0 Red Cells 000 

## Table 21.2 Table Of Monitors Using July 8 th 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 189 8 ‐ Jul Yes Yes Yes No No Yes No No 4

### 2011 Modeling Results 23 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 22.1 2011 Modeled Daily Max 8-hour Ozone For July 9 th 

## Table 22.1 AQI Count Across Metrolina Domain Mask For July 9 th 

### Day 190 2002 2009 2011

Green Cells 24 38 43 Yellow Cells 48 38 33 Orange Cells 400 Red Cells 000 

## Table 22.2 Table Of Monitors Using July 9 th 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 190 9 ‐ Jul No No No No Yes No No No 1

### 2011 Modeling Results 24 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 23.1 2011 Modeled Daily Max 8-hour Ozone For July 16 th 

## Table 23.1 AQI Count Across Metrolina Domain Mask For July 16 th 

### Day 197 2002 2009 2011

Green Cells 0 25 34 Yellow Cells 67 51 42 Orange Cells 900 Red Cells 000 

## Table 23.2 Table Of Monitors Using July 16 th 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 197 16 ‐ Jul No Yes No No No No Yes No 2

### 2011 Modeling Results 25 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 24.1 2011 Modeled Daily Max 8-hour Ozone For July 17 th 

## Table 24.1 AQI Count Across Metrolina Domain Mask For July 17 th 

### Day 198 2002 2009 2011

Green Cells 0 35 42 Yellow Cells 52 33 32 Orange Cells 24 8 2 Red Cells 000 

## Table 24.2 Table Of Monitors Using July 17 th 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 198 17 ‐ Jul No Yes Yes Yes No Yes Yes No 5

### 2011 Modeling Results 26 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 25.1 2011 Modeled Daily Max 8-hour Ozone For July 21 st 

## Table 25.1 AQI Count Across Metrolina Domain Mask For July 21 st 

### Day 202 2002 2009 2011

Green Cells 8 37 63 Yellow Cells 68 39 13 Orange Cells 000 Red Cells 000 

## Table 25.2 Table Of Monitors Using July 21 st 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 202 21 ‐ Jul Yes No No No No No No Yes 2

### 2011 Modeling Results 27 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 26.1 2011 Modeled Daily Max 8-hour Ozone For August 1 st 

## Table 26.1 AQI Count Across Metrolina Domain Mask For August 1 st 

### Day 213 2002 2009 2011

Green Cells 4 55 67 Yellow Cells 70 21 9 Orange Cells 200 Red Cells 000 

## Table 26.2 Table Of Monitors Using August 1 st 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 213 1 ‐ Aug No No Yes No No No No Yes 2

### 2011 Modeling Results 28 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 27.1 2011 Modeled Daily Max 8-hour Ozone For August 2 nd 

## Table 27.1 AQI Count Across Metrolina Domain Mask For August 2 nd 

### Day 214 2002 2009 2011

Green Cells 8 31 47 Yellow Cells 53 45 29 Orange Cells 15 0 0 Red Cells 000 

## Table 27.2 Table Of Monitors Using August 2 nd 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 214 2 ‐ Aug Yes Yes Yes No Yes No No Yes 5

### 2011 Modeling Results 29 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 28.1 2011 Modeled Daily Max 8-hour Ozone For August 5 th 

## Table 28.1 AQI Count Across Metrolina Domain Mask For August 5 th 

### Day 217 2002 2009 2011

Green Cells 19 43 62 Yellow Cells 55 33 14 Orange Cells 200 Red Cells 000 

## Table 28.2 Table Of Monitors Using August 5 th 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 217 5 ‐ Aug No No No No Yes No No Yes 2

### 2011 Modeling Results 30 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 29.1 2011 Modeled Daily Max 8-hour Ozone For August 6 th 

## Table 29.1 AQI Count Across Metrolina Domain Mask For August 6 th 

### Day 218 2002 2009 2011

Green Cells 24 63 73 Yellow Cells 52 13 3 Orange Cells 000 Red Cells 000 

## Table 29.2 Table Of Monitors Using August 6 th 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 218 6 ‐ Aug No No No No No No Yes No 1

### 2011 Modeling Results 31 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 30.1 2011 Modeled Daily Max 8-hour Ozone For August 9 th 

## Table 30.1 AQI Count Across Metrolina Domain Mask For August 9 th 

### Day 221 2002 2009 2011

Green Cells 21 54 55 Yellow Cells 55 22 21 Orange Cells 000 Red Cells 000 

## Table 30.2 Table Of Monitors Using August 9 th 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 221 9 ‐ Aug No No No No No No No Yes 1

### 2011 Modeling Results 32 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 31.1 2011 Modeled Daily Max 8-hour Ozone For August 10 th 

## Table 31.1 AQI Count Across Metrolina Domain Mask For August 10 th 

### Day 222 2002 2009 2011

Green Cells 9 45 55 Yellow Cells 62 31 21 Orange Cells 500 Red Cells 000 

## Table 31.2 Table Of Monitors Using August 10 th 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 222 10 ‐ Aug No Yes Yes Yes No Yes No No 4

### 2011 Modeling Results 33 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 32.1 2011 Modeled Daily Max 8-hour Ozone For August 11 th 

## Table 32.1 AQI Count Across Metrolina Domain Mask For August 11 th 

### Day 223 2002 2009 2011

Green Cells 12 53 64 Yellow Cells 60 23 12 Orange Cells 400 Red Cells 000 

## Table 32.2 Table Of Monitors Using August 11 th 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 223 11 ‐ Aug No Yes Yes Yes No No No No 3

### 2011 Modeling Results 34 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 33.1 2011 Modeled Daily Max 8-hour Ozone For August 12 th 

## Table 33.1 AQI Count Across Metrolina Domain Mask For August 12 th 

### Day 224 2002 2009 2011

Green Cells 5 37 45 Yellow Cells 48 39 31 Orange Cells 23 0 0 Red Cells 000 

## Table 33.2 Table Of Monitors Using August 12 th 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 224 12 ‐ Aug No Yes No Yes Yes Yes No No 4

### 2011 Modeling Results 35 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 34.1 2011 Modeled Daily Max 8-hour Ozone For August 21 st 

## Table 34.1 AQI Count Across Metrolina Domain Mask For August 21 st 

### Day 233 2002 2009 2011

Green Cells 32 53 65 Yellow Cells 42 23 11 Orange Cells 200 Red Cells 000 

## Table 34.2 Table Of Monitors Using August 21 st 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 233 21 ‐ Aug No No No No No No No Yes 1

### 2011 Modeling Results 36 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Figure 35.1 2011 Modeled Daily Max 8-hour Ozone For August 23 rd 

## Table 35.1 AQI Count Across Metrolina Domain Mask For August 23 rd 

### Day 235 2002 2009 2011

Green Cells 1 40 50 Yellow Cells 67 36 26 Orange Cells 800 Red Cells 000 

## Table 35.2 Table Of Monitors Using August 23 rd 

## As An RRF Day JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 235 23 ‐ Aug No Yes Yes No No No Yes No 3

### 2011 Modeling Results 37 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Table 36 Combined Table Of Days Used In The RRF Calculations By Monitor JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Enochville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 Total # of Sites 

### 143 23 ‐ May No No No No No No No Yes 1 

### 144 24 ‐ May No No No No Yes No Yes No 2 

### 145 25 ‐ May Yes Yes Yes Yes No Yes Yes No 6 

### 146 26 ‐ May No Yes No Yes No Yes No No 3 

### 152 1 ‐ Jun No No No No No No Yes No 1 

### 153 2 ‐ Jun No No No No No No Yes No 1 

### 154 3 ‐ Jun Yes Yes Yes No No No No Yes 4 

### 160 9 ‐ Jun Yes No No No No No No No 1 

### 161 10 ‐ Jun Yes Yes Yes Yes Yes Yes No Yes 7 

### 162 11 ‐ Jun Yes Yes No Yes Yes Yes No No 5 

### 163 12 ‐ Jun No Yes Yes Yes Yes Yes Yes No 6 

### 164 13 ‐ Jun No Yes No Yes Yes Yes Yes No 5 

### 181 30 ‐ Jun No No No No No No No Yes 1 

### 182 1 ‐ Jul No No No No No Yes No No 1 

### 183 2 ‐ Jul No Yes No No No No No No 1 

### 184 3 ‐ Jul Yes Yes Yes No No No Yes No 4 

### 185 4 ‐ Jul No Yes Yes Yes No Yes Yes Yes 6 

### 186 5 ‐ Jul No Yes Yes Yes Yes Yes No Yes 6 

### 187 6 ‐ Jul Yes Yes Yes No No No No Yes 4 

### 189 8 ‐ Jul Yes Yes Yes No No Yes No No 4 

### 190 9 ‐ Jul No No No No Yes No No No 1 

### 197 16 ‐ Jul No Yes No No No No Yes No 2 

### 198 17 ‐ Jul No Yes Yes Yes No Yes Yes No 5 

### 202 21 ‐ Jul Yes No No No No No No Yes 2 

### 213 1 ‐ Aug No No Yes No No No No Yes 2 

### 214 2 ‐ Aug Yes Yes Yes No Yes No No Yes 5 

### 217 5 ‐ Aug No No No No Yes No No Yes 2 

### 218 6 ‐ Aug No No No No No No Yes No 1 

### 221 9 ‐ Aug No No No No No No No Yes 1 

### 222 10 ‐ Aug No Yes Yes Yes No Yes No No 4 

### 223 11 ‐ Aug No Yes Yes Yes No No No No 3 

### 224 12 ‐ Aug No Yes No Yes Yes Yes No No 4 

### 233 21 ‐ Aug No No No No No No No Yes 1 

### 235 23 ‐ Aug No Yes Yes No No No Yes No 3 Total Days 10 20 15 12 10 13 12 13 Cut off (ppb) 83 85 85 85 83 85 78 81

### 2011 Modeling Results 38 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Table 37 Daily RRF Values for Days Used in Attainment Test RRF JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Echnoville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 

### 143 23 ‐ May 0.937 144 24 ‐ May 0.882 0.904 145 25 ‐ May 0.839 0.892 0.904 0.890 0.854 0.886 146 26 ‐ May 0.873 0.873 0.852 152 1 ‐ Jun 0.863 153 2 ‐ Jun 0.848 154 3 ‐ Jun 0.816 0.881 0.857 0.851 160 9 ‐ Jun 0.855 161 10 ‐ Jun 0.876 0.899 0.910 0.879 0.884 0.882 0.889 162 11 ‐ Jun 0.893 0.903 0.879 0.863 0.871 163 12 ‐ Jun 0.888 0.896 0.859 0.863 0.862 0.866 164 13 ‐ Jun 0.872 0.862 0.846 0.850 0.878 181 30 ‐ Jun 0.837 182 1 ‐ Jul 0.806 183 2 ‐ Jul 0.833 184 3 ‐ Jul 0.807 0.830 0.869 0.855 185 4 ‐ Jul 0.872 0.869 0.822 0.820 0.841 0.831 186 5 ‐ Jul 0.855 0.818 0.808 0.795 0.808 0.805 187 6 ‐ Jul 0.794 0.835 0.805 0.807 189 8 ‐ Jul 0.835 0.882 0.871 0.852 190 9 ‐ Jul 0.838 197 16 ‐ Jul 0.843 0.843 198 17 ‐ Jul 0.841 0.842 0.805 0.800 0.831 202 21 ‐ Jul 0.784 0.831 213 1 ‐ Aug 0.828 0.829 214 2 ‐ Aug 0.789 0.827 0.813 0.803 0.818 217 5 ‐ Aug 0.784 0.821 218 6 ‐ Aug 0.837 221 9 ‐ Aug 0.843 222 10 ‐ Aug 0.850 0.850 0.830 0.808 223 11 ‐ Aug 0.846 0.846 0.832 224 12 ‐ Aug 0.835 0.819 0.815 0.819 233 21 ‐ Aug 0.839 235 23 ‐ Aug 0.880 0.837 0.845 Average 0.829 0.862 0.854 0.846 0.837 0.837 0.858 0.841

### 2011 Modeling Results 39 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Table 38 Raw CMAQ Daily 8-Hour Ozone Maxi mum for 2002 Base Year Used in Attainment Test RRF JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Echnoville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 

### 143 23 ‐ May 81.671 144 24 ‐ May 83.882 79.796 145 25 ‐ May 84.284 94.037 92.727 92.217 91.779 89.270 146 26 ‐ May 86.529 86.529 86.359 152 1 ‐ Jun 78.749 153 2 ‐ Jun 79.863 154 3 ‐ Jun 89.608 94.176 96.786 85.153 160 9 ‐ Jun 84.306 161 10 ‐ Jun 97.028 92.467 94.717 90.364 87.206 90.860 86.083 162 11 ‐ Jun 83.809 92.716 99.080 99.946 99.946 163 12 ‐ Jun 95.467 87.968 91.348 89.832 89.622 98.067 164 13 ‐ Jun 87.924 89.342 87.780 89.342 79.598 181 30 ‐ Jun 82.635 182 1 ‐ Jul 85.121 183 2 ‐ Jul 89.275 184 3 ‐ Jul 83.729 92.425 88.360 78.317 185 4 ‐ Jul 90.714 90.990 85.069 85.069 81.104 86.549 186 5 ‐ Jul 89.955 94.047 85.185 84.289 85.185 85.766 187 6 ‐ Jul 86.078 85.319 88.811 88.597 189 8 ‐ Jul 91.987 92.836 94.776 85.095 190 9 ‐ Jul 84.210 197 16 ‐ Jul 87.489 87.489 198 17 ‐ Jul 101.609 101.561 87.996 87.129 103.131 202 21 ‐ Jul 84.599 81.745 213 1 ‐ Aug 85.459 84.014 214 2 ‐ Aug 85.715 88.289 90.766 84.564 88.807 217 5 ‐ Aug 84.532 83.494 218 6 ‐ Aug 78.559 221 9 ‐ Aug 81.606 222 10 ‐ Aug 89.505 89.505 86.092 86.092 223 11 ‐ Aug 86.219 86.219 85.054 224 12 ‐ Aug 94.343 97.863 95.059 97.863 233 21 ‐ Aug 81.607 235 23 ‐ Aug 88.158 92.922 89.364 Average 87.114 90.973 91.708 89.678 88.130 89.189 85.276 84.441 4th highest 86.078 94.176 94.717 91.348 87.780 90.860 89.270 86.083

### 2011 Modeling Results 40 Supplement to the Attainment Demonstration for the Appendix D.1 Charlotte-Gastonia-Rock Hill, NC-SC 8-Hour Ozone Nonattainment Area April 5, 2010 

## Table 39 Raw CMAQ Daily 8-Hour Ozon e Maximum for 2011 Future Year Used in Attainment Test RRF JDAY Date Crouse 37 ‐ 109 ‐ 0004 Garinger 37 ‐ 119 ‐ 0041 Arrowood 37 ‐ 119 ‐ 1005 County Line 37 ‐ 119 ‐ 1009 Rockwell 37 ‐ 159 ‐ 0021 Echnoville 37 ‐ 159 ‐ 0022 Monroe 37 ‐ 179 ‐ 0003 York 45 ‐ 091 ‐ 0006 

### 143 23 ‐ May 76.493 144 24 ‐ May 73.948 72.118 145 25 ‐ May 70.700 83.846 83.846 82.058 78.382 79.074 146 26 ‐ May 75.544 75.544 73.564 152 1 ‐ Jun 67.937 153 2 ‐ Jun 67.716 154 3 ‐ Jun 73.141 82.931 82.931 72.470 160 9 ‐ Jun 72.116 161 10 ‐ Jun 84.966 83.142 86.146 79.433 77.079 80.127 76.551 162 11 ‐ Jun 74.867 83.746 87.093 86.221 87.093 163 12 ‐ Jun 84.782 78.827 78.447 77.542 77.258 84.965 164 13 ‐ Jun 76.698 77.026 74.277 75.918 69.880 181 30 ‐ Jun 69.200 182 1 ‐ Jul 68.631 183 2 ‐ Jul 74.347 184 3 ‐ Jul 67.583 76.758 76.758 66.927 185 4 ‐ Jul 79.089 79.089 69.936 69.790 68.206 71.918 186 5 ‐ Jul 76.902 76.902 68.827 67.048 68.827 69.060 187 6 ‐ Jul 68.320 71.275 71.511 71.511 189 8 ‐ Jul 76.800 81.848 82.544 72.480 190 9 ‐ Jul 70.564 197 16 ‐ Jul 73.770 73.770 198 17 ‐ Jul 85.485 85.485 70.795 69.684 85.659 202 21 ‐ Jul 66.311 67.940 213 1 ‐ Aug 70.741 69.640 214 2 ‐ Aug 67.633 72.972 73.794 67.863 72.627 217 5 ‐ Aug 66.242 68.588 218 6 ‐ Aug 65.744 221 9 ‐ Aug 68.830 222 10 ‐ Aug 76.112 76.112 71.436 69.566 223 11 ‐ Aug 72.959 72.959 70.750 224 12 ‐ Aug 78.736 80.153 77.426 80.153 233 21 ‐ Aug 68.435 235 23 ‐ Aug 77.593 77.777 75.541 Average 72.244 78.427 78.361 75.958 73.821 74.729 73.128 71.020 4th highest 73.141 83.746 82.931 79.433 77.079 78.382 75.541 72.470