New Mexico State Interstate Transport SIP 

Submitted to EPA July 30, 2007 

Appendix D, Exhibit 9 

Modeling Data and Report for New Mexico 

From EPA Regions 6 and 7 for Ozone

This page added by EPA Region 6 
110(a)(2)(d)(i) Modeling 

Technical Support Document 
INTRODUCTION 

A Transport State Implementation Plan (SIP) is required by the Clean Air Act 

Amendments 110(a)(2)(d)(i). To assist the state of New Mexico in providing a 

technical analysis to base the determination of Transport impacts from ozone and 

ozone pre-cursors, EPA Regions 6 and 7 conducted some modeling with 2002 

third quarter CENRAP modeling dataset. EPA’s CAIR modeling for PM-2.5 

indicated that significant transport of PM-2.5 and PM-2.5 precursors is not 

expected to occur in relation to the 110(a)(2)(d)(i) requirements. 

While Transport SIPs should be based on 2010 emission levels, a 2010 dataset 

was not available for the CENRAP modeling data. An assumption that emissions 

and New Mexico’s potential transport impact would be equal or lower in 2010 

compared to 2002 for emissions from New Mexico is part of the premise of this 

test. On August 15, 2006, EPA issued final guidance to states for preparation of 

SIPs that satisfy the 110(a)(2)(D)(i) requirements, and, on September 11, 2006, 

added a supplement to the guidance. 

While impacts from other states on nonattainment areas and areas that are nearnonattainment were included in this report, a couple of caveats exist. First caveat, 

is that this analysis is based on a 2002 emissions and is likely a conservative 

estimate of potential transport impacts in 2010 (i.e. the existence of significant 

transport levels in 2002 does not conclude that significant transport would occur 

in 2010 as many federal measures will result in lower emission levels in 2010). 

Second caveat is some of the areas identified in this analysis are not required to 

be considered for potential transport concerns in accordance with EPA’s 2006 

guidance documents. Third caveat, analyses was only conducted for predicted 

exceedances of 85 ppb, and the modeling seems to be underpredicting peak 

ozone levels. For example, no ozone exceedances were predicted for the areas of 

El Paso and Phoenix, so no contribution analysis was conducted. 

2
2002 Base Year Ozone Modeling 

A. Photochemical Model 

Air quality modeling analyses for ozone were conducted by USEPA Regions 6 and 7 with the 

Comprehensive Air Quality Model with Extensions (CAMx). CAMx is a non-proprietary 

computer modeling tool that can be used to evaluate the impacts of proposed emissions 

reductions on future air quality levels. CAMx has been extensively used in the development of 

State Implementation Plan (SIP) revisions for both ozone and fine particulate matter, and was 

relied upon by USEPA as part of NOx SIP call and Clean Air Interstate Transport Rule (CAIR). 

Version 4.31 of the CAMx model was employed for these analyses. For more information on 

the CAMx model, please see the model user’s guide (Environ, 2006) available at 

http://www.camx.com. 

The modeling analyses were completed for a continental United States domain at 36 km 

resolution. CAMx was applied and evaluated over the summer of 2002 (July-September). The 

model outputs from the 2002 base year and current air quality data, were used to: 1) assess the 

potential for transport of ozone and ozone precursors, and 2) determine the contribution from 

transport to future 8-hour ozone nonattainment. 

B. Modeling Domain and Grid Configuration 

As with episode selection, there are also several considerations involved in selecting the 

domain and grid configuration to be used in the ozone modeling analysis. The modeling 

domain should encompass the area of intended analysis with an additional buffer of grid cells 

to minimize the effects of, sometimes uncertain, boundary condition inputs. When possible, 

grid resolution should be equivalent to the resolution of the primary model inputs (emissions, 

winds, etc.) and equivalent to the scale of the air quality issue being addressed. The CAMx 

modeling was performed on the 36 km national grid established by mutual agreement between 

the regional planning organizations in 2002 (Figure B-1). 

3
Figure B-1. Photochemical modeling domain for 110(a)(2)(D) modeling project. 

C. Meteorological Inputs 

In order to simulate the formation and transport of pollutants, CAMx requires meteorological 

inputs such as wind, temperature, pressure, as well as other derived meteorological parameters 

which describe the dispersive characteristics of the atmosphere. 

The meteorological data for the summer of 2002 was developed using the fifth generation 

Pennsylvania State University/National Center for Atmospheric Research (PSU/NCAR) 

Mesoscale Meteorological Model (MM5), version 3.63 (Grell, et al., 1994). 

MM5 is a numerical meteorological model that solves the full set of physical and 

thermodynamic equations which govern atmospheric motions. The output data from MM5, if 

found to be of suitable quality based upon statistical and graphical performance evaluation, is 

processed through the MM5CAMX program. MM5CAMX extracts the u and v wind vector 

components, temperature, water vapor mixing ratios, air pressure, and precipitation. 

MM5CAMx also computes derived variables such as cloud cover and vertical diffusivity. All 

of the extracted and derived meteorological variables are mapped to the CAMx grid. 

Table B -1 MM5 Physics Options for CENRAP 2002 Annual MM5 Simulation 

Model Parameter Physics Option Selected 

Cumulus Kain-Fritsch II 

Planetary Boundary Layer Pleim-Xu/ACM LSM PBL 

Moisture Microphysics Reisner I 

Radiation RRTM 

FDDA Analysis Nudging (Default Coefficient 

Strength) 

4
MM5 was run with a single domain with a resolution of 36 km covering the continental United 

States for the 2002 calendar year. The CENRAP MM5 simulations carried 34 vertical layers 

from the surface to 100 mb. 

 

CENRAP conducted a statistical model performance evaluation (Morris, et al., 2005) that was 

completed for a portion of 2002 meteorological modeling period. In general, it was found that 

the CENRAP 36 km MM5 results were within range of acceptable statistical performance 

measures and deemed acceptable for use in photochemical modeling. A regional negative 

temperature bias was observed over the northern United States during winter months, but this 

appears to be a common artifact observed across numerous MM5 simulations in the US. 

Please refer to Appendix A for more information regarding CENRAP 2002 MM5 performance. 

Consistent with the technical analysis for the Clean Air Interstate Rule (CAIR), EPA Regions 6 

and 7 used the source apportionment technique as part of the modeling analysis to evaluate the 

downwind contributions of emissions in upwind States. This is achieved by using multiple 

tracer species to track the fate of ozone precursor emission (VOC and NOx) and the ozone 

formation caused by these emissions within a CAMx simulation. The methodology is designed 

so that all ozone and precursor concentrations are attributed to the selected source 

areas/categories at all times. Thus, for all receptor locations and times, the ozone, VOC, and 

NOx concentrations predicted by the CAMx are attributed to the source areas/categories 

selected for analysis. EPA used the ozone source apportionment tool (OSAT) option for the 

110(a)(2)(D) source apportionment modeling. The key feature of OSAT is that it allocates the 

ozone production to the manmade precursor emissions, either through reactions among various 

manmade sources and/or through reactions between manmade emissions and biogenic 

emissions. Additional information on the source apportionment technique can be found in the 

CAMx User’s Guide (Environ, 2006). 

In the CAIR modeling analysis, EPA found that the source apportionment modeling tends to 

show greater magnitude and frequency of contributions than the zero-out modeling for 

individual linkages (USEPA, 2004). There is no technical evidence showing that one 

technique is clearly superior to the other for evaluating contributions to ozone from various 

emission sources; therefore, both approaches were given equal consideration in the 

significance analysis for the CAIR modeling. 

Given the time constraints for the development of technical analyses supporting the 

110(a)(2)(D) SIP revision process, source apportionment modeling with CAMx was chosen as 

the preferred alternative. The OSAT source apportionment technique in CAMx was developed 

to provide modelers with a means of estimating the contributions of many different source 

areas/categories to ozone formation in one single model run. Given that no evidence is 

available to suggest that zero-out modeling is a technically superior apportionment technique, 

OSAT modeling was chosen as the basis for determining potential linkages between state 

emissions and downwind nonattainment. 

5
D. CAMx Model Evaluation and Selection for Transport Analysis 

 

The goal of the 2002 Base Year modeling was to reproduce the atmospheric processes 

resulting in high ozone concentrations over the continental United States during the ozone 

season. The ozone model performance evaluation procedures and results are provided in 

Appendix B of this document. 

E. Ozone Contribution Factors and Metrics 

In the CAIR modeling analyses, EPA selected several metrics to quantify the projected 

downwind contributions from emissions in upwind States. The metrics were designed to 

provide information on three fundamental factors for evaluating whether emissions in an 

upwind State make large and/or frequent contributions to downwind nonattainment. These 

factors are: a) the magnitude of the contribution, b) the frequency of the contribution, and c) 

the relative amount of the contribution. 

The magnitude of contribution factor refers to the actual amount of ozone contributed by 

emissions in the upwind State to nonattainment in the downwind area. The frequency of the 

contribution refers to how often contributions above certain thresholds occur. The relative 

amount of the contribution is used to compare the total ozone contributed by the upwind State 

to the total amount of nonattainment ozone in the downwind area. These factors are the basis 

for the four separate metrics that can be used to assess a particular impact. These metrics are 

described below for the source apportionment modeling. Table E-1 lists the four metrics used 

for the factors identified. 

6
Table E-1. Contribution Factors and Metrics 

Factor Source Apportionment Metrics Screening Threshold 

Magnitude of 

Contribution 

1. Maximum contribution; and 

2. Highest daily average 

contribution (ppb and percent) 

< 2 ppb 

 < 2 ppb or < 1% 

 contribution 

Frequency of 

Contribution 

3. Number and percent of 

exceedances with contributions 

in various contribution ranges 

NA 

Relative 

Amount of 

Contribution 

4. Total average contribution to 

exceedance ozone in the 

downwind area 

NA 

Explanation of Source Apportionment Metrics 

Despite the fundamental differences between the zero out and source apportionment techniques, 

the definitions of the source apportionment metrics are generally similar to the zero out metrics. 

One exception is that all 8-hour periods with averages above or equal to 85 ppb are considered 

in the source apportionment metrics, as opposed to just the peak 8-hour average per day. 

Similar analyses completed as part of the NOx SIP call concluded that the differences resulting 

from considering only daily maximum 8-hour averages (zero out) versus considering all 8-hour 

periods (source apportionment) was very small and did not influence the significance 

determinations. Therefore, the number of “exceedance periods” are the total number of 8-

hourly predicted concentrations greater than or equal to 85 ppb within the downwind area on a 

cell-by cell basis. Using the Kansas City MSA receptor area as an example, the maximum 

possible number of exceedances for this area is 7,820 (5 cells * 92 days * 17 eight-hour 

averages per day). The actual number of exceedance periods for this area was 216. 

For a given upwind State to downwind nonattainment receptor linkage, the Maximum 

Contribution Metric (metric 1) is the highest contribution from among the contributions to all 

exceedances at the downwind receptor. 

The Highest Daily Average Contribution Metric (metric 2) is determined for each day with 

predicted exceedances at the downwind receptor. The metric is calculated by first summing the 

contributions for that linkage over all exceedances on a particular day, then dividing by the 

number of exceedances on that day to produce a daily average contribution to nonattainment. 

The daily average contribution values across all days with exceedances are examined to 

identify the highest value which is then selected for use in the determination of significance. 

We also express this metric as a percent by dividing the highest daily average contribution by 

the corresponding ozone exceedance concentration on the same day. 

The Frequency of Contribution Metric (metric 3) for the source apportionment technique 

7
is also determined in a similar way to which this metric is calculated for the zero-out modeling. 

Looking at the impact of New Mexico emissions on Chicago as an example, 8 of the 459 

exceedance hours (1.74 percent) were reduced by at least 2 ppb. 

The Total Average Contribution Metric is determined for all 92 days combined. There are three 

parts to the calculation of this metric. In step 1, the ozone values for each of the exceedance 

periods in a particular downwind area are summed over the episode(s). In step 2, the total 

ozone from the previous step that is due to anthropogenic sources is calculated based on the 

source apportionment results. In step 3, the contributions from a given source region to this 

downwind area are summed over the exceedance periods. The total contribution calculated in 

step 3 is then divided by the total ozone resulting from manmade sources in step 2 to determine 

the fraction of ozone that is due to emissions from the upwind source area. This fraction can be 

multiplied by 100 to express the result as a percentage. For example, for the 1173 exceedance 

periods in DFW there is a total of 90,940.89 ppb of ozone. Of the total base ozone, the source 

apportionment results indicate that 112,122.81 ppb is due to anthropogenic sources. The 

sources in New Mexico contribute a total of 71.9 ppb which is 0.07 percent of the base case 

total (i.e., 71.9 divided by 112,122.81). 

8
F. Basis for Identifying which Linkages are Significant 

As delineated in the CAIR modeling technical support document, EPA compiled the 8-hour 

metrics by downwind nonattainment receptor county (referred 

too below as “downwind area”) in order to evaluate the contributions to downwind 

nonattainment in 2010. As previously discussed, due to the limitations in the availability of 

emission inventory data for 2010, emissions from the 2002 base year were selected because 

they were readily available from CENRAP RPO. The source apportionment contribution 

metrics were reviewed to determine how large of a contribution a 

particular upwind State makes to nonattainment in each downwind area in terms of the 

magnitude of the contribution, the frequency of the contributions, and the relative amount of 

the total contribution. Determining whether a particular linkage indicated a significant amount 

of transport from an upwind source State to a downwind county is a three step process. 

The first step in evaluating the contribution factors was to screen out linkages for which 

the contributions were clearly small. This initial screening was based on: 1) a maximum 

contribution of less than 2 ppb from either of the two modeling techniques and/or, 2) a percent 

of total nonattainment of less than 1 percent. For this analysis only the source apportionment 

analysis was conducted (not the zero-out technique as done in the CAIR analysis). Any 

upwind State that contributed to a particular downwind area in amounts that were less than the 

screening criteria was considered not to make a significant contribution to that downwind area. 

As an example, Nebraska had a maximum contribution of 2.2 ppb on the Chicago MSA in the 

source apportionment, however, the percent of total nonattainment metric was less than 1 

percent (0.36% contribution overall). Therefore, according to the CAIR screening metrics, 

Nebraska would be concluded not to have a significant impact on nonattainment in Chicago as 

a result of the initial screening. Nebraska also had a maximum contribution of 5 ppb on 

Denver in the source apportionment and the percent of total nonattainment metric for Denver 

was 1 percent. This linkage was carried on for further analysis. 

Those linkages that had contributions which exceeded the screening criteria were 

evaluated further in steps 2 and 3. In step 2 we evaluated the contributions in each linkage 

based on the source apportionment modeling. In step 3 we considered the results of both step 1 

and step 2 to determine which of the linkages are significant. EPA determined whether the 

linkage is significant by evaluating the magnitude, frequency, and relative amount of the 

contributions. Each upwind State that made relatively large and/or frequent contributions to 

nonattainment in the downwind area, based on these factors, is considered as contributing 

significantly to nonattainment in the downwind area. 

However, there had to be at least two different factors that indicate large and/or frequent 

contributions in order for the linkage to be found significant. In this regard, the finding of a 

significant contribution for an individual linkage was not based on any single factor. 

As indicated above, in step 3 we considered the results of evaluating the source apportionment 

contributions from step 2. For some of the linkages, however, not all of the factors are 

consistent. For upwind-downwind linkages in which some of the factors indicate high and/or 

frequent contributions while other factors do not, EPA considered the overall number and 

9
magnitude of those factors that indicate large and/or infrequent contributions compared to 

those factors that do not. As part of the process of evaluating these types of linkages, we 

required that two of the three factors had to indicate large and frequent contributions for one of 

the modeling techniques and large and/or frequent contributions for at least one factor in the 

other modeling technique in order to find that the linkage was significant. Thus, based on an 

assessment of all the factors in such cases, EPA determined that the upwind State contributes 

significantly to nonattainment in the downwind area if, on balance, the factors indicate large 

and frequent contributions from the upwind State to the downwind area. 

G. Results of Interstate Ozone Contribution Analysis 

Using the procedures described in Section F of this document, EPA determined that New 

Mexico did not contribute significantly to nonattainment in specific downwind nonattainment 

areas. These areas are examined in Tables G-1 through G-4. In each case, the application of 

the CAIR source apportionment modeling metrics developed by EPA yielded consistent results 

showing that New Mexico does not contribute significantly to downwind nonattainment to 

existing 8-hour ozone nonattainment and maintenance areas in the Central United States. 

Table G-1. Evaluation of Contribution to Downwind Nonattainment in Dallas/Fort Worth, TX. 

Receptor Steps Evaluation of Contribution 

DFW Step 1:Evaluation 

of Contributions 

Against Screening 

Criteria 

• Highest daily average impact (0.4 ppb) and 

percentage contribution (0.4%) from New Mexico 

did not exceed screening criteria thresholds. These 

values are less than 2 ppb and 1% respectively, so 

did not proceed forward to step 2. 

Step 2: 

Evaluation of 

Contributions 

from Source 

Apportionment 

Modeling 

• Not Done. 

Step 3: Final 

Determination 

of Significance 

• Insignificant contribution to DFW nonattainment 

based upon small and infrequent impacts. 

10
Table G-2. Evaluation of Contribution to Downwind Nonattainment in Houston (HGB). 

Receptor Steps Evaluation of Contribution 

Houston Step 1:Evaluation 

of Contributions 

Against Screening 

Criteria 

• Highest daily average impact (0.2 ppb) and 

percentage contribution (0.07%) from New Mexico 

did not exceed screening criteria thresholds. These 

values are less than 2 ppb and 1% respectively, so 

did not proceed forward to step 2. 

Step 2: 

Evaluation of 

Contributions 

from Source 

Apportionment 

Modeling 

• Not Done. 

Step 3: Final 

Determination 

of Significance 

• Insignificant contribution to Houston (HGB) 

nonattainment based upon small and infrequent 

impacts. 

Table G-3. Evaluation of Contribution to Downwind Nonattainment in St. Louis. 

Receptor Steps Evaluation of Contribution 

St. Louis Step 1:Evaluation 

of Contributions 

Against Screening 

Criteria 

• Highest daily average impact (0.4 ppb) and 

percentage contribution (0.05%) from New Mexico. 

These values are less than 2 ppb and 1% 

respectively, so did not proceed forward to step 2. 

Step 2: 

Evaluation of 

Contributions 

from Source 

Apportionment 

Modeling 

• Not Done 

Step 3: Final 

Determination 

of Significance 

• Insignificant contribution to St. Louis nonattainment 

based upon small and infrequent impacts 

11
Table G-4. Evaluation of Contribution to Downwind potential Nonattainment in San Antonio 

Receptor Steps Evaluation of Contribution 

San Antonio Step 1:Evaluation 

of Contributions 

Against Screening 

Criteria 

• Highest daily average impact (0.1 ppb) and 

percentage contribution (0.1%) from New Mexico 

exceeded screening criteria thresholds and were 

carried forward to step 2. 

Step 2: 

Evaluation of 

Contributions 

from Source 

Apportionment 

Modeling 

• Not Done 

Step 3: Final 

Determination 

of Significance 

• Insignificant contribution to San Antonio potential 

nonattainment based upon small and infrequent 

impacts 

12
Appendix A 

MM5 Performance Evaluation 

13
January Performance Statistics

14
CENRAP / VISTAS / WRAPJanuary Humidity Performance 

Comparison Over CENRAP Domain

0

0.5

1

1.5

2

2.5

3

-1.5 -1 -0.5 0 0.5 1 1.5 2 2.5

Humidity Bias (g/kg)

Humidity Error (g/kg)

Benchmark CENRAP VISTAS WRAP i

CENRAP N

CENRAP S

CENRAP / VISTAS / WRAP January Wind Performance 

Comparison over CENRAP Domain

0

10

20

30

40

50

60

70

80

0 0.5 1 1.5 2 2.5 3

Wind Speed RMSE (m/s)

Wind Direction Error (m/s)

Benchmark CENRAP VISTAS WRAP i

CENRAP N

CENRAP S

15
CENRAP / VISTAS / WRAP January Temperature Performance Comparison 

Over CENRAP Domain

0

0.5

1

1.5

2

2.5

3

3.5

-2 -1.5 -1 -0.5 0 0.5 1

Temperature Bias (K)

Temperature Error (K)

Benchmark CENRAP VISTAS WRAP i

CENRAP N

CENRAP S

16
17
July Performance 

18
CENRAP / VISTAS / WRAP July Humidity Performance 

Comparison Over CENRAP Domain

0

0.5

1

1.5

2

2.5

3

-1.5 -1 -0.5 0 0.5 1 1.5 2 2.5

Humidity Bias (g/kg)

Humidity Error (g/kg)

Benchmark VISTAS WRAP CENRAP 

CENRAP N

CENRAP S

CENRAP / VISTAS / WRAP July Wind Performance Comparison Over 

CENRAP Domain

0

10

20

30

40

50

60

70

80

0 0.51 1.52 2.5

Wind Speed RMSE (m/s)

Wind Dierction Error (m/s)

3

Benchmark VISTAS WRAP i CENRAP 

CENRAP N

CENRAP S

19
CENRAP / VISTAS / WRAP July Temperature Performance Comparison Over 

CENRAP Domain

0

0.5

1

1.5

2

2.5

3

3.5

-2 -1.5 -1 -0.5 0 0.5 1

Temperature Bias (K)

Temeprature Error (K)

Benchmark VISTAS WRAP i CENRAP 

CENRAP N

CENRAP S

20
Appendix B 

Model Performance Evaluation 

CENRAP 2002 Base B Emissions 

21
An operational model performance evaluation for surface ozone for the third quarter of 2002 

(July – September) was performed by regional modeling program at the University of 

California-Riverside under contract to CENRAP in order to estimate the ability of the 

modeling system to replicate base year ozone and fine particulate concentrations. This 

evaluation will focus upon the performance of the modeling system to replicate ozone 

formation. This evaluation is comprised principally of statistical assessments of model versus 

observed pairs. The robustness of an operational evaluation is directly proportional to the 

amount and quality of the ambient data available for comparison. 

a. Statistical Definitions 

Below are the definitions of those statistics used for the evaluation. The format of all the 

statistics is such that negative values indicate model ozone predictions that were less than their 

observed counterparts. Positively-valued statistics indicate model overestimation of surface 

ozone. Statistics were not generated for the first three days of an episode to avoid the 

initialization period. The statistics were calculated for the entire CENRAP domain. The 

statistics that were calculated are described below. 

Domainwide unpaired peak prediction accuracy: This metric simply compares the peak 

concentration modeled anywhere in the selected area against the peak ambient concentration 

anywhere in the same area. The difference of the peaks (model - observed) is then normalized 

by the peak observed concentration. 

Peak prediction accuracy: This metric averages the paired peak prediction accuracy calculated 

for each monitor in the region. It characterizes the capacity of the model to replicate peak 

(afternoon) ozone over a region. The daily peak model versus daily peak observed residuals are 

paired in space but not in time. 

Mean normalized bias: This performance statistic averages the normalized (by observation) 

difference (model - observed) over all pairs. A value of zero would indicate that the model over 

predictions and model under predictions exactly cancel each other out. 

Mean normalized gross error: The last metric used to assess the performance of the CENRAP 

base cases is similar to the above statistic, except in this case it is the absolute value of the 

residual which is normalized by the observation, and then averaged over all sites. A zero gross 

error value would indicate that all model concentrations exactly matched the ambient values. 

b. Domainwide Model Performance 

The ability of the CAMx model predictions to replicate observed concentrations varies by day 

and location over the CENRAP modeling domain. Observing model performance solely from 

a qualitative perspective, there appears to be considerable similarity on most days between the 

observed and simulated ozone patterns. As in the case of the CAIR modeling, when it is 

possible to discern, the model appears to follow the day-to-day variations in synoptic-scale 

ozone fairly closely. Quantitative comparisons of the model predictions and ambient data are 

provided below. 

22
Hourly ozone is consistently underestimated domainwide, especially at the peak of the 

observed ozone distribution. The model does slightly better in replicating observed 

concentrations in the 40 ppb – 70 ppb range, with a consistent tendency towards 

underprediction at the higher concentrations (80 ppb and greater). Several possible factors 

contributing to model underprediction including: 1) use of a 36 km model resolution, and 2) 

use of the CMAQ modeling system by UC-R for the performance analysis of the 2002 Base B 

inventory. Typically photochemical models underpredict peak observed values in an urban 

ozone network because at coarser resolutions they lack the definition in the local emissions 

gradient which often contributes to observed ozone peaks. The second factor, use of the 

CMAQ model, is more difficult to translate since statistics presented for the CENRAP 2002 

Base B inventory are not from the CAMx modeling system. Traditionally, CMAQ has had 

better model performance for the simulation of fine particulate matter, but ozone performance 

has consistently lagged behind CAMx in direct model comparisons. Therefore, the use of the 

CMAQ statistical evaluation can be used to help inform the performance of CAMx, but should 

not be used directly to determine the suitability of CAMx with the CENRAP Base B inventory. 

23
Table B – I. Hourly performance statistics for July CAMx simulation. 

Statistic O3 CO NO2 SO2 

Fraction_Bias(%) 22.54261 

-

84.55503 -2.70256 -19.52791 

Fraction_GErr(%) 45.73763 89.98657 64.03193 81.05571 

Ac_Paired_Peak -0.40362 -0.73255 -0.15338 -0.355 

Norm_Mean_Bias(%) 17.55243 

-

63.97655 0.60502 -1.05384 

Norm_Mean_Err(%) 37.06093 67.59956 63.45919 88.36781 

Mean_Norm_Bias(%) 92.92606 

-

52.42324 52.67342 58.69197 

Mean_Norm_GErr(%) 109.91456 60.41689 98.62555 123.55678

Mean_Bias 0.00532 -0.31353 0.00006 -0.00003 

Mean_Abs_GErr 0.01124 0.33129 0.00611 0.00233 

Geometric_Bias 0.2536 -0.98781 -0.03618 -0.24155 

Geometric_Err 0.53201 1.04427 0.72853 0.96643 

Root_Mean_SErr 0.01489 0.44488 0.00897 0.00361 

Obs_Max 0.174 3.5 0.068 0.034 

Pre_Max 0.10377 0.93607 0.05757 0.02193 

Arith_Obs_Mean 0.03034 0.49007 0.00963 0.00263 

Arith_Pre_Mean 0.03566 0.17654 0.00969 0.00261 

Geome_Obs_Mean 0 0 0 0 

Geome_Pre_Mean 0 0 0 0 

Stand_Devi_Obs 0.02069 0.3062 0.00823 0.00255 

Stand_Devi_Pre 0.01803 0.10669 0.00832 0.00299 

Corr_Variance 0.00022 0.19792 0.00008 0.00001 

Coeff_Determi 0.56274 0.0071 0.16967 0.02496 

Bias_Factor 1.92925 0.47577 1.52674 1.58692 

Num_Points 15956 4784 12187 3421 

24
Table B – II. Hourly performance statistics for August CAMx simulation. 

Statistic O3 CO NO2 SO2 

Fraction_Bias(%) 7.52819 

-

87.49685

-

12.73677 -10.51964

Fraction_GErr(%) 45.44545 92.5224 65.34878 73.48346

Ac_Paired_Peak -0.46192 -0.88287 -0.13701 -0.53212

Norm_Mean_Bias(%) 2.1539 

-

66.66081 -8.36802 1.05795

Norm_Mean_Err(%) 33.92863 69.60217 59.96339 78.0471

Mean_Norm_Bias(%) 66.56069 

-

53.75061 33.50217 49.80844

Mean_Norm_GErr(%) 93.62855 61.87815 86.79572 105.58033

Mean_Bias 0.00073 -0.36847 -0.00094 0.00003

Mean_Abs_GErr 0.01146 0.38473 0.00675 0.00209

Geometric_Bias 0.07862 -1.03384 -0.15515 -0.13716

Geometric_Err 0.53676 1.08685 0.74192 0.85358

Root_Mean_SErr 0.01532 0.56073 0.0099 0.00311

Obs_Max 0.172 8.6 0.067 0.033

Pre_Max 0.09255 1.00732 0.05782 0.01544

Arith_Obs_Mean 0.03378 0.55275 0.01126 0.00268

Arith_Pre_Mean 0.03451 0.18428 0.01032 0.0027

Geome_Obs_Mean 0 0 0 0

Geome_Pre_Mean 0 0 0 0

Stand_Devi_Obs 0.02107 0.41927 0.00967 0.00245

Stand_Devi_Pre 0.017 0.11479 0.00944 0.00241

Corr_Variance 0.00023 0.31441 0.0001 0.00001

Coeff_Determi 0.48468 0.01141 0.21994 0.03278

Bias_Factor 1.6656 0.46249 1.33502 1.49808

Num_Points 15827 4940 11824 3449

25
Table B – III. Hourly performance statistics for September CAMx simulation. 

Statistic O3 CO NO2 SO2 

Fraction_Bias(%) 21.94467 

-

81.44273

-

13.18538 17.65673

Fraction_GErr(%) 43.61423 87.70278 61.28941 71.23005

Ac_Paired_Peak -0.305 -0.82125 -0.29549 -0.3471

Norm_Mean_Bias(%) 12.47914 

-

64.97016

-

10.03813 28.03314

Norm_Mean_Err(%) 33.80435 68.2096 56.14925 88.46379

Mean_Norm_Bias(%) 122.73198 

-

50.03151 19.72901 93.61565

Mean_Norm_GErr(%) 139.77042 58.81277 70.8172 130.49443

Mean_Bias 0.00427 -0.34706 -0.00118 0.00078

Mean_Abs_GErr 0.01158 0.36436 0.0066 0.00245

Geometric_Bias 0.27534 -0.96735 -0.166 0.20451

Geometric_Err 0.52148 1.03195 0.68681 0.8127

Root_Mean_SErr 0.01539 0.56225 0.00993 0.00375

Obs_Max 0.164 6.5 0.102 0.031

Pre_Max 0.11398 1.16186 0.07186 0.02024

Arith_Obs_Mean 0.03424 0.53418 0.01176 0.00277

Arith_Pre_Mean 0.03852 0.18712 0.01058 0.00355

Geome_Obs_Mean 0 0 0 0

Geome_Pre_Mean 0 0 0 0

Stand_Devi_Obs 0.02191 0.44111 0.01045 0.00292

Stand_Devi_Pre 0.01673 0.12101 0.01011 0.00287

Corr_Variance 0.00024 0.31612 0.0001 0.00001

Coeff_Determi 0.54503 0.01601 0.29151 0.03743

Bias_Factor 2.22732 0.49968 1.19729 1.93616

Num_Points 15562 4892 12936 3284

26
Figure B – I. Scatterplot of hourly model-observed ozone predictions for July 2002. 

27
Figure B – II. Scatterplot of hourly model-observed ozone predictions for August 2002. 

28
Figure B – III. Scatterplot of hourly model-observed ozone predictions for September 2002. 

29
Appendix C 

CAMx Source Apportionment Results 

30
Table C-1 

Region contribution to each area

31
Source Region = AL 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

BTR 17.7 19 105 8/29/2002 21 13.1 13 101 8/30/2002 30 

MEM 15.3 14 91 8/23/2002 3 15.2 14 93 8/22/2002 11 

BPA 8.2 8 100 8/31/2002 41 7.8 8 101 8/30/2002 29 

HGB 7.2 7 97 8/31/2002 135 7.2 7 92 9/15/2002 16 

SAN 6.5 6 94 8/31/2002 25 4.7 4 90 9/6/2002 9 

DFW 6.5 6 91 9/1/2002 23 6.2 6 94 9/5/2002 31 

OKC 5.8 5 86 9/1/2002 1 5.7 5 88 8/5/2002 5 

DEN 0.4 0 88 8/8/2002 2 0.4 0 87 8/7/2002 1 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

WI 7.4 7 92 9/20/2002 23 2.8 3 93 8/14/2002 10 

STL 6.4 6 90 9/8/2002 7 3.5 4 101 9/9/2002 29 

KC 4.9 4 87 9/9/2002 4 4.3 4 87 9/10/2002 1 

CHI 2.7 2 89 9/9/2002 10 2.6 2 85 8/13/2002 1 

Source Region = AR 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

MEM 43 38 90 7/17/2002 4 33.4 30 91 7/10/2002 5 

OKC 14.3 13 87 9/7/2002 2 12.6 11 87 8/31/2002 2 

DFW 13.5 14 100 8/7/2002 56 13.4 13 95 8/8/2002 31 

BPA 7.2 6 90 8/29/2002 18 4.8 5 97 9/12/2002 24 

HGB 7 6 93 8/29/2002 57 4.9 5 103 9/12/2002 89 

SAN 6.6 6 91 9/12/2002 9 4.7 4 89 8/30/2002 11 

BTR 5.3 5 94 8/27/2002 13 4.8 4 87 8/26/2002 5 

DEN 0.5 0 88 8/10/2002 1 0.4 0 91 8/11/2002 3 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

STL 15.6 14 93 8/19/2002 2 10.2 9 89 7/18/2002 5 

KC 10.9 9 87 9/1/2002 4 10.4 9 87 9/9/2002 4 

CHI 6.2 5 87 8/16/2002 4 5.5 5 85 8/13/2002 1 

WI 5.5 5 95 8/13/2002 41 5.4 5 90 9/3/2002 15 

32
Source Region = BC 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

DEN 48.5 42 87 6/30/2002 5 41.2 37 91 7/1/2002 10 

OKC 22.1 19 86 8/6/2002 2 18.9 17 88 8/5/2002 5 

BTR 19.8 18 92 7/17/2002 2 18.4 17 91 9/11/2002 8 

DFW 19.5 17 88 9/10/2002 4 18 16 90 9/11/2002 13 

MEM 19.3 17 88 9/13/2002 2 19 17 88 9/14/2002 2 

HGB 18.9 16 86 7/23/2002 2 17.7 15 87 7/24/2002 2 

SAN 14.2 13 91 9/12/2002 9 13.7 12 90 9/6/2002 9 

BPA 13.5 13 95 9/11/2002 6 13.2 12 90 7/7/2002 16 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

CHI 28.3 25 87 7/14/2002 1 20.8 19 92 8/3/2002 7 

STL 20.1 18 92 9/6/2002 14 20.1 18 88 7/7/2002 7 

KC 19.7 17 87 9/10/2002 1 19.6 17 87 9/9/2002 4 

WI 18.8 17 92 7/14/2002 6 14.1 12 85 9/18/2002 1 

Source Region = CO 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

DEN 66.6 62 93 9/7/2002 2 63.6 60 94 9/8/2002 3 

MEM 0.5 0 91 8/26/2002 2 0.5 0 94 8/25/2002 3 

DFW 0.4 0 88 9/10/2002 4 0.4 0 89 8/28/2002 10 

BTR 0.3 0 94 8/27/2002 13 0.3 0 87 8/26/2002 5 

HGB 0.3 0 92 8/28/2002 24 0.2 0 93 8/29/2002 57 

OKC 0.3 0 86 9/3/2002 1 0.3 0 86 9/4/2002 1 

BPA 0.2 0 92 8/28/2002 7 0.2 0 92 8/27/2002 4 

SAN 0.2 0 91 9/12/2002 9 0.2 0 94 9/13/2002 23 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

STL 0.6 0 88 8/25/2002 5 0.5 0 92 8/24/2002 6 

KC 0.5 0 87 8/24/2002 1 0.4 0 88 8/11/2002 1 

CHI 0.4 0 93 8/11/2002 6 0.3 0 85 8/24/2002 1 

WI 0.4 0 89 8/21/2002 1 0.3 0 89 8/22/2002 9 

33
Source Region = Canada 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

MEM 4.2 4 95 8/29/2002 18 3.7 3 89 8/28/2002 14 

DFW 2.9 3 90 8/30/2002 20 1.5 1 96 8/9/2002 33 

BPA 2.3 2 90 8/29/2002 18 0.9 1 101 8/30/2002 29 

OKC 2.1 2 87 8/31/2002 2 1.7 1 86 8/29/2002 1 

SAN 1.8 2 89 8/30/2002 11 0.8 1 94 8/31/2002 25 

HGB 1.5 1 93 8/29/2002 57 1.4 1 100 8/30/2002 97 

BTR 1 1 90 8/4/2002 9 0.9 1 93 8/28/2002 8 

DEN 0.3 0 89 7/18/2002 6 0.3 0 88 8/10/2002 1 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

CHI 12.1 11 88 8/31/2002 6 11.3 10 88 8/30/2002 7 

STL 11.6 10 86 8/29/2002 2 9.7 8 87 8/28/2002 4 

WI 5.3 5 89 8/10/2002 1 5 5 93 7/30/2002 8 

KC 2.6 2 90 8/9/2002 6 2.5 2 88 8/31/2002 4 

Source Region = East 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

MEM 35.6 34 95 8/29/2002 18 31.1 29 93 8/30/2002 22 

BTR 21.9 20 90 8/4/2002 9 18.5 19 101 8/30/2002 30 

DFW 17.5 16 94 8/31/2002 56 14.9 14 91 9/1/2002 23 

BPA 16.5 15 90 8/29/2002 18 15.3 15 101 8/30/2002 29 

HGB 16.2 14 86 9/1/2002 2 14.8 15 100 8/30/2002 97 

OKC 14.3 13 88 8/5/2002 5 14.3 12 86 9/1/2002 1 

SAN 14 13 94 8/31/2002 25 11.4 10 89 8/30/2002 11 

DEN 1.4 1 88 8/8/2002 2 1.4 1 87 8/7/2002 1 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

CHI 30.6 27 88 8/31/2002 6 29 26 88 8/30/2002 7 

STL 30 27 88 8/30/2002 5 25.1 22 86 8/29/2002 2 

WI 21.7 20 92 9/1/2002 6 17.5 16 91 9/2/2002 10 

KC 17.2 15 88 8/31/2002 4 17 15 87 9/9/2002 4 

34
Source Region = Gulf 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

BTR 10.4 9 91 8/7/2002 18 7.9 7 93 8/6/2002 8 

BPA 9.7 9 92 8/8/2002 8 9.3 8 88 8/9/2002 2 

HGB 8.2 7 87 8/9/2002 1 7.5 7 92 9/15/2002 16 

SAN 3.7 3 89 8/9/2002 1 3 3 94 8/31/2002 25 

MEM 1.6 1 93 7/27/2002 2 1.1 1 91 8/23/2002 3 

DFW 1.1 1 88 7/11/2002 16 0.9 1 90 9/3/2002 16 

OKC 0.9 1 87 8/11/2002 2 0.7 1 89 8/10/2002 3 

DEN 0.1 0 88 8/8/2002 2 0.1 0 87 8/7/2002 1 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

WI 1.3 1 92 9/20/2002 23 0.4 0 98 7/2/2002 13 

STL 0.7 1 93 8/19/2002 2 0.4 0 89 7/18/2002 5 

KC 0.6 1 87 7/4/2002 3 0.6 0 87 7/18/2002 3 

CHI 0.5 0 87 8/16/2002 4 0.3 0 85 8/13/2002 1 

Source Region = IA 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

MEM 5 5 94 8/25/2002 3 4.9 4 91 8/26/2002 2 

OKC 1.4 1 87 7/23/2002 3 1.2 1 87 7/13/2002 2 

DFW 1.2 1 93 7/14/2002 26 1.2 1 93 7/15/2002 23 

BTR 1.1 1 94 8/27/2002 13 0.7 1 93 8/28/2002 8 

HGB 0.5 0 92 8/28/2002 24 0.3 0 103 9/14/2002 122 

BPA 0.4 0 99 9/13/2002 44 0.4 0 92 8/28/2002 7 

SAN 0.2 0 87 7/8/2002 4 0.1 0 87 7/9/2002 3 

DEN 0.1 0 89 7/18/2002 6 0.1 0 88 7/19/2002 14 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

STL 11.8 10 88 8/25/2002 5 10.7 10 92 8/24/2002 6 

CHI 10.2 11 105 7/18/2002 27 7.9 8 103 7/19/2002 16 

WI 8.3 8 95 8/11/2002 13 7.6 6 85 7/19/2002 1 

KC 2.4 2 90 8/3/2002 6 2.1 2 85 8/7/2002 1 

35
Source Region = IC 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total 

total 

ppb ppb date 

# 

values 

DEN 0.3 0 87 6/30/2002 5 0.2 0 91 7/1/2002 10 

DFW 0 0 96 7/7/2002 45 0 0 88 7/11/2002 16 

MEM 0 0 95 7/2/2002 25 0 0 97 7/3/2002 28 

OKC 0 0 91 7/10/2002 17 0 0 88 7/11/2002 11 

BPA 0 0 90 7/7/2002 16 0 0 90 7/8/2002 14 

HGB 0 0 88 7/7/2002 19 0 0 90 7/8/2002 34 

BTR 0 0 88 7/8/2002 10 0 0 94 7/7/2002 31 

SAN 0 0 87 7/8/2002 4 0 0 87 7/9/2002 3 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

WI 0.1 0 107 7/1/2002 67 0.1 0 98 7/2/2002 13 

CHI 0.1 0 106 6/30/2002 18 0 0 109 7/1/2002 7 

STL 0 0 101 7/4/2002 49 0 0 104 7/3/2002 32 

KC 0 0 87 7/5/2002 8 0 0 87 7/4/2002 3 

Source Region = IL 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

MEM 13.2 12 90 8/7/2002 3 11.6 11 92 9/11/2002 11 

OKC 5 4 88 8/7/2002 6 4.1 3 86 8/29/2002 1 

DFW 3.4 3 90 8/30/2002 20 3 3 89 8/29/2002 13 

BTR 3 3 96 9/12/2002 26 3 3 94 8/27/2002 13 

BPA 2.9 3 97 9/12/2002 24 2.6 3 99 9/13/2002 44 

HGB 2.3 2 93 8/29/2002 57 2 2 106 9/13/2002 189 

SAN 2 2 89 8/30/2002 11 1.4 1 93 9/14/2002 10 

DEN 0.2 0 88 8/10/2002 1 0.2 0 91 8/11/2002 3 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

CHI 66.2 72 109 7/1/2002 7 61.7 66 106 6/30/2002 18 

STL 44.5 41 93 8/21/2002 15 42.5 38 88 9/16/2002 1 

WI 39.7 36 90 7/9/2002 34 36.8 32 87 7/4/2002 2 

KC 13.1 11 85 8/7/2002 1 11.1 10 91 7/7/2002 20 

36
Source Region = IN 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

MEM 11 10 90 8/27/2002 10 10.2 10 99 7/6/2002 29 

OKC 3.7 3 91 8/9/2002 3 3.4 3 92 8/8/2002 10 

DFW 3.5 3 90 8/30/2002 20 2.2 2 89 8/29/2002 13 

BPA 3.5 3 90 8/29/2002 18 2.2 2 97 9/12/2002 24 

BTR 2.6 2 96 9/12/2002 26 2 2 95 9/13/2002 29 

HGB 2.6 2 93 8/29/2002 57 2 2 100 8/30/2002 97 

SAN 2.2 2 89 8/30/2002 11 1.6 1 93 9/14/2002 10 

DEN 0.2 0 88 8/10/2002 1 0.1 0 91 8/11/2002 3 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

WI 24.5 21 85 9/18/2002 1 24.3 22 89 9/19/2002 26 

CHI 20.6 19 92 9/7/2002 12 17 16 92 9/8/2002 25 

STL 14.8 14 92 8/9/2002 4 14.4 13 92 9/6/2002 14 

KC 6.7 6 91 7/7/2002 20 6.2 5 88 8/31/2002 4 

Source Region = KS 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

OKC 11.6 10 87 7/23/2002 3 9.8 8 87 7/13/2002 2 

DFW 6 6 93 7/14/2002 26 5.9 5 93 7/15/2002 23 

DEN 2.8 2 88 8/10/2002 1 2.5 2 91 8/11/2002 3 

MEM 2.6 2 91 7/11/2002 6 1.4 1 94 8/25/2002 3 

SAN 0.9 1 91 9/12/2002 9 0.7 1 94 9/13/2002 23 

BTR 0.8 1 96 9/12/2002 26 0.7 1 95 9/13/2002 29 

BPA 0.7 1 99 9/13/2002 44 0.6 1 96 9/14/2002 56 

HGB 0.6 1 106 9/13/2002 189 0.6 1 103 9/14/2002 122 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

KC 44.3 38 87 8/24/2002 1 42.9 39 90 8/3/2002 6 

STL 5.3 5 97 7/30/2002 17 4.2 4 96 7/10/2002 40 

CHI 4.2 4 93 8/11/2002 6 3.2 3 96 7/29/2002 4 

WI 3.8 4 98 7/2/2002 13 3.7 4 104 7/21/2002 17 

37
Source Region = KY 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

MEM 13.4 13 94 7/5/2002 23 13.1 12 90 8/27/2002 10 

BPA 6.2 6 90 8/29/2002 18 3.3 3 97 9/12/2002 24 

BTR 3.8 4 96 9/12/2002 26 3.2 3 105 8/29/2002 21 

HGB 3.5 4 100 8/30/2002 97 3.2 3 93 8/29/2002 57 

DFW 3.5 3 89 9/7/2002 9 3.2 3 96 8/9/2002 33 

OKC 3.4 3 91 8/9/2002 3 3.4 3 87 8/31/2002 2 

SAN 3.3 3 91 9/12/2002 9 3.1 3 89 8/30/2002 11 

DEN 0.1 0 91 8/11/2002 3 0.1 0 88 8/10/2002 1 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

STL 12.2 12 95 9/1/2002 8 11.4 11 97 8/4/2002 25 

WI 6.3 6 89 9/19/2002 26 5 4 85 9/18/2002 1 

CHI 4.6 4 92 9/8/2002 25 3.9 4 105 8/4/2002 34 

KC 4.3 4 91 7/6/2002 13 4.1 4 88 8/31/2002 4 

Source Region = LA 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

BTR 75.2 70 93 7/19/2002 12 74.4 73 98 7/18/2002 15 

BPA 38.9 34 88 7/9/2002 9 33.2 30 90 7/8/2002 14 

HGB 18.9 18 95 8/8/2002 36 17.6 17 94 8/5/2002 24 

SAN 16 14 89 8/9/2002 1 14.1 13 94 8/31/2002 25 

MEM 14.7 14 93 7/27/2002 2 9.6 9 94 7/31/2002 4 

DFW 14.4 13 94 9/5/2002 31 12.5 12 96 7/7/2002 45 

OKC 8.2 7 91 9/5/2002 11 5.3 5 86 9/3/2002 1 

DEN 0.5 0 88 8/8/2002 2 0.5 0 87 8/7/2002 1 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

WI 5.6 5 92 9/20/2002 23 2.4 2 95 8/13/2002 41 

KC 3.7 3 87 7/4/2002 3 2.9 3 87 7/5/2002 8 

STL 2.8 3 93 8/19/2002 2 1.3 1 92 8/20/2002 9 

CHI 1.7 1 87 8/16/2002 4 1.6 1 85 8/13/2002 1 

38
Source Region = MI 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

MEM 4.4 4 90 8/27/2002 10 1.9 2 89 8/28/2002 14 

OKC 1.5 1 91 8/9/2002 3 1.5 1 92 8/8/2002 10 

BPA 1.3 1 90 8/29/2002 18 0.5 0 92 8/28/2002 7 

HGB 1 1 93 8/29/2002 57 0.6 1 100 8/30/2002 97 

DFW 0.9 1 90 8/30/2002 20 0.9 1 89 8/29/2002 13 

BTR 0.8 1 93 8/28/2002 8 0.5 1 105 8/29/2002 21 

SAN 0.8 1 89 8/30/2002 11 0.3 0 94 8/31/2002 25 

DEN 0.1 0 88 8/10/2002 1 0.1 0 91 8/11/2002 3 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

CHI 20.8 18 88 8/30/2002 7 19.9 18 92 7/6/2002 7 

WI 12.7 12 92 9/1/2002 6 8.3 8 100 7/7/2002 12 

STL 10.3 9 87 8/7/2002 4 5.6 5 87 8/28/2002 4 

KC 1.4 1 85 8/7/2002 1 1.2 1 90 8/9/2002 6 

Source Region = MN 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

OKC 1.3 1 87 7/13/2002 2 0.7 1 86 8/29/2002 1 

MEM 1.1 1 91 8/26/2002 2 1.1 1 90 8/27/2002 10 

BTR 0.7 1 94 8/27/2002 13 0.5 0 93 8/28/2002 8 

DFW 0.7 1 89 8/28/2002 10 0.7 1 93 7/14/2002 26 

HGB 0.4 0 92 8/28/2002 24 0.4 0 93 8/29/2002 57 

BPA 0.4 0 92 8/28/2002 7 0.3 0 90 8/29/2002 18 

DEN 0.2 0 90 7/11/2002 4 0.2 0 87 7/10/2002 3 

SAN 0.2 0 89 8/30/2002 11 0.1 0 94 8/31/2002 25 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

WI 13.3 12 93 7/30/2002 8 7.4 8 106 7/15/2002 14 

CHI 7.9 7 91 8/25/2002 10 7 7 99 7/15/2002 11 

STL 7.3 6 87 7/23/2002 4 6.9 6 88 8/26/2002 9 

KC 1.3 1 90 8/3/2002 6 1 1 89 7/25/2002 2 

39
Source Region = MO 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

MEM 15 14 94 8/25/2002 3 13.9 13 91 8/26/2002 2 

OKC 13.9 12 88 8/7/2002 6 5.9 5 86 8/29/2002 1 

DFW 4 4 93 7/15/2002 23 3.8 4 93 9/12/2002 23 

BPA 3 3 97 9/12/2002 24 2.6 3 99 9/13/2002 44 

BTR 2.7 2 94 8/27/2002 13 1.9 2 96 9/12/2002 26 

HGB 2.3 2 106 9/13/2002 189 2.1 2 103 9/12/2002 89 

SAN 1.8 2 91 9/12/2002 9 1.8 2 94 9/13/2002 23 

DEN 0.4 0 88 8/10/2002 1 0.3 0 91 8/11/2002 3 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

STL 63.1 66 104 8/1/2002 9 54.4 48 89 7/18/2002 5 

KC 28.4 26 90 9/5/2002 7 26.2 24 91 7/6/2002 13 

CHI 14 13 95 7/3/2002 3 13.6 12 90 8/1/2002 7 

WI 11.5 11 93 8/1/2002 15 10.9 10 88 7/3/2002 2 

Source Region = MS 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

MEM 26.7 25 93 8/11/2002 2 20.5 19 93 8/22/2002 11 

BTR 12 11 93 8/28/2002 8 11.7 11 94 8/27/2002 13 

BPA 9.7 10 101 8/30/2002 29 8.4 8 100 8/31/2002 41 

DFW 7.7 7 91 9/6/2002 38 7.3 7 94 9/5/2002 31 

HGB 7.6 7 97 8/31/2002 135 6.8 7 100 8/30/2002 97 

OKC 6.7 6 88 8/5/2002 5 6 5 91 9/5/2002 11 

SAN 5.9 5 94 8/31/2002 25 5.1 5 90 9/6/2002 9 

DEN 0.3 0 88 8/8/2002 2 0.3 0 87 8/7/2002 1 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

CHI 7.9 7 85 8/13/2002 1 1.7 2 90 8/12/2002 7 

WI 6.5 6 92 9/20/2002 23 6.5 6 93 8/14/2002 10 

KC 4.5 4 87 7/4/2002 3 2.8 2 87 9/9/2002 4 

STL 1.9 2 89 9/3/2002 4 1.8 2 90 9/8/2002 7 

40
Source Region = Mexico 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

DEN 1.7 2 94 9/8/2002 3 1.4 1 93 9/7/2002 2 

DFW 1.1 1 91 7/26/2002 9 1 1 94 7/25/2002 11 

OKC 0.7 1 87 7/23/2002 3 0.6 1 86 9/3/2002 1 

BTR 0.4 0 87 8/26/2002 5 0.2 0 94 8/27/2002 13 

SAN 0.3 0 89 8/7/2002 4 0.1 0 89 8/8/2002 7 

BPA 0.3 0 89 7/13/2002 3 0.2 0 91 7/12/2002 7 

MEM 0.3 0 87 8/20/2002 2 0.3 0 94 8/1/2002 3 

HGB 0.2 0 92 8/28/2002 24 0.1 0 93 8/29/2002 57 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

KC 1 1 89 7/27/2002 3 0.9 1 89 7/26/2002 7 

STL 0.6 1 97 7/30/2002 17 0.4 0 92 8/24/2002 6 

WI 0.4 0 88 8/2/2002 3 0.3 0 103 7/22/2002 16 

CHI 0.3 0 90 8/1/2002 7 0.3 0 96 7/22/2002 6 

Source Region = ND 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

OKC 0.7 1 87 7/23/2002 3 0.4 0 87 7/13/2002 2 

MEM 0.5 0 90 8/27/2002 10 0.3 0 95 7/24/2002 5 

DEN 0.4 0 90 7/11/2002 4 0.4 0 87 7/10/2002 3 

DFW 0.3 0 89 8/28/2002 10 0.3 0 89 8/29/2002 13 

HGB 0.2 0 93 8/29/2002 57 0.2 0 92 8/28/2002 24 

BTR 0.2 0 93 8/28/2002 8 0.2 0 94 8/27/2002 13 

BPA 0.2 0 90 8/29/2002 18 0.2 0 92 8/28/2002 7 

SAN 0.1 0 89 8/30/2002 11 0.1 0 94 8/31/2002 25 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

WI 2.8 3 93 7/30/2002 8 1.1 1 95 8/25/2002 3 

STL 1.8 2 88 8/26/2002 9 1.6 1 88 8/27/2002 9 

CHI 1.2 1 91 8/25/2002 10 1 1 88 8/26/2002 4 

KC 0.4 0 89 7/25/2002 2 0.2 0 90 9/5/2002 7 

41
Source Region = NE 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

DEN 5.5 5 87 7/10/2002 3 5.2 5 90 7/11/2002 4 

OKC 3.4 3 87 7/13/2002 2 1.7 1 87 7/23/2002 3 

DFW 1.5 1 93 7/14/2002 26 1.4 1 93 7/15/2002 23 

MEM 0.7 1 94 8/25/2002 3 0.7 1 91 8/26/2002 2 

BTR 0.3 0 94 8/27/2002 13 0.2 0 96 9/12/2002 26 

BPA 0.2 0 96 9/14/2002 56 0.2 0 99 9/13/2002 44 

HGB 0.2 0 92 8/28/2002 24 0.1 0 93 8/29/2002 57 

SAN 0.2 0 91 9/12/2002 9 0.2 0 94 9/13/2002 23 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

CHI 2.2 2 93 8/11/2002 6 1.6 2 96 7/29/2002 4 

WI 1.9 2 95 8/11/2002 13 1.3 1 107 7/29/2002 27 

KC 1.8 2 87 8/24/2002 1 1.3 1 90 8/23/2002 3 

STL 1.7 2 97 7/30/2002 17 1.4 1 90 9/4/2002 2 

Source Region = NM 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

DEN 5.8 5 88 7/20/2002 5 5.8 5 88 7/19/2002 14 

OKC 0.9 1 86 9/3/2002 1 0.7 1 86 9/4/2002 1 

DFW 0.4 0 89 8/28/2002 10 0.4 0 88 8/27/2002 4 

MEM 0.4 0 87 8/20/2002 2 0.2 0 92 8/21/2002 4 

BTR 0.3 0 87 8/26/2002 5 0.2 0 94 8/27/2002 13 

HGB 0.2 0 92 8/28/2002 24 0.1 0 93 8/29/2002 57 

BPA 0.1 0 92 8/27/2002 4 0.1 0 92 8/28/2002 7 

SAN 0.1 0 91 9/12/2002 9 0.1 0 89 8/30/2002 11 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

KC 0.5 0 87 8/24/2002 1 0.5 0 88 8/11/2002 1 

STL 0.4 0 89 9/3/2002 4 0.4 0 90 9/4/2002 2 

CHI 0.2 0 93 8/11/2002 6 0.2 0 85 8/24/2002 1 

WI 0.2 0 90 9/3/2002 15 0.2 0 89 8/21/2002 1 

42
Source Region = OK 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

OKC 64.2 55 86 7/25/2002 1 63.1 55 87 7/24/2002 6 

DFW 18 17 93 7/14/2002 26 17.9 17 93 7/15/2002 23 

MEM 2.9 3 91 7/11/2002 6 2.3 2 88 7/23/2002 5 

SAN 2.7 2 91 9/12/2002 9 1.6 2 94 9/13/2002 23 

DEN 2.3 2 88 8/10/2002 1 2.1 2 91 8/11/2002 3 

BTR 1.5 1 87 8/26/2002 5 1 1 92 7/13/2002 9 

HGB 0.5 0 92 8/28/2002 24 0.5 1 103 9/12/2002 89 

BPA 0.5 0 92 8/27/2002 4 0.4 0 92 8/28/2002 7 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

KC 21.6 19 87 7/31/2002 2 19.6 18 90 8/23/2002 3 

STL 7.3 7 97 7/19/2002 7 6.6 6 97 7/20/2002 11 

CHI 4.5 4 96 7/22/2002 6 3.7 3 93 7/21/2002 20 

WI 4.3 4 88 8/2/2002 3 4.3 4 103 7/22/2002 16 

Source Region = SD 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

DEN 2.9 3 87 7/10/2002 3 2.8 3 90 7/11/2002 4 

OKC 0.9 1 87 7/13/2002 2 0.5 0 87 7/23/2002 3 

MEM 0.5 0 91 8/26/2002 2 0.5 1 94 8/25/2002 3 

DFW 0.4 0 93 7/14/2002 26 0.4 0 93 7/15/2002 23 

BTR 0.2 0 94 8/27/2002 13 0.2 0 93 8/28/2002 8 

HGB 0.2 0 92 8/28/2002 24 0.1 0 93 8/29/2002 57 

BPA 0.1 0 92 8/28/2002 7 0.1 0 90 8/29/2002 18 

SAN 0.1 0 89 8/30/2002 11 0.1 0 91 9/12/2002 9 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

WI 1 1 93 7/30/2002 8 0.9 1 100 7/31/2002 11 

STL 0.9 1 97 7/30/2002 17 0.9 1 90 9/4/2002 2 

CHI 0.7 1 87 8/16/2002 4 0.4 0 91 8/25/2002 10 

KC 0.4 0 89 7/25/2002 2 0.2 0 89 8/5/2002 9 

43
Source Region = TN 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

MEM 47.5 47 98 8/3/2002 27 46.9 47 101 8/2/2002 12 

BPA 8.2 7 90 8/29/2002 18 4.7 5 101 8/30/2002 29 

DFW 7.8 7 89 9/7/2002 9 5.5 5 96 8/9/2002 33 

BTR 6.8 7 105 8/29/2002 21 6.3 6 96 9/12/2002 26 

OKC 6.2 5 86 8/6/2002 2 4.9 4 87 9/7/2002 2 

HGB 5.2 5 100 8/30/2002 97 3.2 3 106 9/13/2002 189 

SAN 4.6 4 91 9/12/2002 9 3.9 3 90 9/6/2002 9 

DEN 0.2 0 88 8/8/2002 2 0.2 0 87 8/7/2002 1 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

STL 10.6 10 90 9/8/2002 7 9.3 9 101 9/9/2002 29 

WI 7.9 7 92 9/20/2002 23 5.3 5 90 9/3/2002 15 

KC 6.9 6 87 9/1/2002 4 6.2 5 86 9/2/2002 2 

CHI 5.6 5 85 8/13/2002 1 3.8 3 89 9/9/2002 10 

Source Region = TX 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

BPA 87.8 78 89 7/13/2002 3 87.2 79 91 7/12/2002 7 

DFW 80.7 73 91 7/26/2002 9 80.3 76 94 7/25/2002 11 

HGB 80.6 69 85 7/25/2002 1 76.7 67 87 7/24/2002 2 

SAN 66.3 59 89 8/7/2002 4 61.8 55 89 8/8/2002 7 

OKC 33.5 29 86 9/3/2002 1 29.2 26 91 7/10/2002 17 

MEM 14.8 13 87 7/22/2002 2 12.1 11 94 8/1/2002 3 

BTR 14.2 13 92 7/13/2002 9 13.4 12 87 8/26/2002 5 

DEN 6.2 5 87 8/7/2002 1 6.2 5 88 8/8/2002 2 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

KC 18.6 16 87 7/18/2002 3 16.5 15 89 7/27/2002 3 

STL 10.6 10 97 7/19/2002 7 10.2 9 93 8/19/2002 2 

CHI 7 7 96 7/28/2002 10 5.4 5 96 7/29/2002 4 

WI 5.1 5 96 7/28/2002 62 4.3 4 103 7/22/2002 16 

44
Source Region = WI 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

MEM 1.8 2 95 7/24/2002 5 1.7 2 90 8/27/2002 10 

BTR 0.9 1 94 8/27/2002 13 0.9 1 93 8/28/2002 8 

DFW 0.9 1 89 8/28/2002 10 0.7 1 89 8/29/2002 13 

OKC 0.8 1 86 8/29/2002 1 0.6 1 87 7/13/2002 2 

BPA 0.6 1 92 8/28/2002 7 0.4 0 90 8/29/2002 18 

HGB 0.5 0 92 8/28/2002 24 0.5 0 93 8/29/2002 57 

SAN 0.2 0 89 8/30/2002 11 0.1 0 94 8/31/2002 25 

DEN 0 0 89 7/18/2002 6 0 0 88 7/19/2002 14 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

WI 70.8 67 95 8/25/2002 3 70.6 63 89 8/26/2002 2 

CHI 30.9 27 88 8/26/2002 4 30.2 27 91 8/25/2002 10 

STL 9.4 8 87 7/23/2002 4 7.8 7 87 7/24/2002 10 

KC 1.7 1 85 8/7/2002 1 0.7 1 89 7/25/2002 2 

Source Region = WY 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

DEN 8.6 7 87 7/26/2002 1 7 6 87 7/25/2002 4 

MEM 0.7 1 91 8/26/2002 2 0.7 1 94 8/25/2002 3 

BTR 0.4 0 94 8/27/2002 13 0.3 0 93 8/28/2002 8 

DFW 0.4 0 89 8/28/2002 10 0.3 0 89 8/29/2002 13 

HGB 0.3 0 92 8/28/2002 24 0.2 0 93 8/29/2002 57 

OKC 0.3 0 86 8/6/2002 2 0.2 0 88 7/11/2002 11 

BPA 0.2 0 92 8/28/2002 7 0.2 0 90 8/29/2002 18 

SAN 0.2 0 89 8/30/2002 11 0.1 0 91 9/12/2002 9 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

CHI 1 1 93 8/11/2002 6 0.6 1 90 8/12/2002 7 

STL 0.7 1 88 8/25/2002 5 0.5 1 92 8/24/2002 6 

WI 0.6 1 95 8/11/2002 13 0.5 1 107 7/29/2002 27 

KC 0.4 0 87 7/31/2002 2 0.3 0 87 8/24/2002 1 

45
Source Region = Western United States 

Highest Average Contribution Second Highest Average Contribution 

Receptor 

Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

DEN 16.1 14 87 6/30/2002 5 15.2 14 90 7/2/2002 6 

DFW 1.9 2 89 8/28/2002 10 1.7 1 89 8/29/2002 13 

BTR 1.7 2 94 8/27/2002 13 1.5 1 93 8/28/2002 8 

MEM 1.7 2 90 8/27/2002 10 1.5 1 91 8/26/2002 2 

HGB 1.4 1 92 8/28/2002 24 1.1 1 93 8/29/2002 57 

OKC 1.3 1 86 8/29/2002 1 1.1 1 86 8/6/2002 2 

BPA 1 1 92 8/28/2002 7 0.8 1 90 8/29/2002 18 

SAN 0.8 1 89 8/30/2002 11 0.5 0 91 9/12/2002 9 

PHX 0 0 0 none 0 0 0 0 none 0 

ELP 0 0 0 none 0 0 0 0 none 0 

STL 3.7 3 88 8/26/2002 9 3.1 3 88 8/27/2002 9 

WI 2.7 2 93 7/30/2002 8 1.9 2 100 7/31/2002 11 

CHI 2 2 91 8/25/2002 10 1.7 1 88 8/26/2002 4 

KC 1.5 1 89 7/25/2002 2 1.2 1 89 8/5/2002 9 

46
Table C-2 

Each Receptor Area with Region contribution break-down 

47
Receptor Area = Beaumont/Port Arthur 

 Highest Average Contribution Second Highest Average Contribution 

Source Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

TX 87.8 78 89 7/13/2002 3 87.2 79 91 7/12/2002 7

LA 38.9 34 88 7/9/2002 9 33.2 30 90 7/8/2002 14

East 16.5 15 90 8/29/2002 18 15.3 15 101 8/30/2002 29

BC 13.5 13 95 9/11/2002 6 13.2 12 90 7/7/2002 16

MS 9.7 10 101 8/30/2002 29 8.4 8 100 8/31/2002 41

Gulf 9.7 9 92 8/8/2002 8 9.3 8 88 8/9/2002 2

AL 8.2 8 100 8/31/2002 41 7.8 8 101 8/30/2002 29

TN 8.2 7 90 8/29/2002 18 4.7 5 101 8/30/2002 29

AR 7.2 6 90 8/29/2002 18 4.8 5 97 9/12/2002 24

KY 6.2 6 90 8/29/2002 18 3.3 3 97 9/12/2002 24

IN 3.5 3 90 8/29/2002 18 2.2 2 97 9/12/2002 24

MO 3 3 97 9/12/2002 24 2.6 3 99 9/13/2002 44

IL 2.9 3 97 9/12/2002 24 2.6 3 99 9/13/2002 44

Canada 2.3 2 90 8/29/2002 18 0.9 1 101 8/30/2002 29

MI 1.3 1 90 8/29/2002 18 0.5 0 92 8/28/2002 7

West 1 1 92 8/28/2002 7 0.8 1 90 8/29/2002 18

KS 0.7 1 99 9/13/2002 44 0.6 1 96 9/14/2002 56

WI 0.6 1 92 8/28/2002 7 0.4 0 90 8/29/2002 18

OK 0.5 0 92 8/27/2002 4 0.4 0 92 8/28/2002 7

IA 0.4 0 99 9/13/2002 44 0.4 0 92 8/28/2002 7

MN 0.4 0 92 8/28/2002 7 0.3 0 90 8/29/2002 18

Mexico 0.3 0 89 7/13/2002 3 0.2 0 91 7/12/2002 7

NE 0.2 0 96 9/14/2002 56 0.2 0 99 9/13/2002 44

WY 0.2 0 92 8/28/2002 7 0.2 0 90 8/29/2002 18

CO 0.2 0 92 8/28/2002 7 0.2 0 92 8/27/2002 4

ND 0.2 0 90 8/29/2002 18 0.2 0 92 8/28/2002 7

SD 0.1 0 92 8/28/2002 7 0.1 0 90 8/29/2002 18

NM 0.1 0 92 8/27/2002 4 0.1 0 92 8/28/2002 7

IC 0 0 90 7/7/2002 16 0 0 90 7/8/2002 14

48
Receptor Area = Baton Rouge 

 Highest Average Contribution Second Highest Average Contribution 

Source Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

LA 75.2 70 93 7/19/2002 12 74.4 73 98 7/18/2002 15

East 21.9 20 90 8/4/2002 9 18.5 19 101 8/30/2002 30

BC 19.8 18 92 7/17/2002 2 18.4 17 91 9/11/2002 8

AL 17.7 19 105 8/29/2002 21 13.1 13 101 8/30/2002 30

TX 14.2 13 92 7/13/2002 9 13.4 12 87 8/26/2002 5

MS 12 11 93 8/28/2002 8 11.7 11 94 8/27/2002 13

Gulf 10.4 9 91 8/7/2002 18 7.9 7 93 8/6/2002 8

TN 6.8 7 105 8/29/2002 21 6.3 6 96 9/12/2002 26

AR 5.3 5 94 8/27/2002 13 4.8 4 87 8/26/2002 5

KY 3.8 4 96 9/12/2002 26 3.2 3 105 8/29/2002 21

IL 3 3 96 9/12/2002 26 3 3 94 8/27/2002 13

MO 2.7 2 94 8/27/2002 13 1.9 2 96 9/12/2002 26

IN 2.6 2 96 9/12/2002 26 2 2 95 9/13/2002 29

West 1.7 2 94 8/27/2002 13 1.5 1 93 8/28/2002 8

OK 1.5 1 87 8/26/2002 5 1 1 92 7/13/2002 9

IA 1.1 1 94 8/27/2002 13 0.7 1 93 8/28/2002 8

Canada 1 1 90 8/4/2002 9 0.9 1 93 8/28/2002 8

WI 0.9 1 94 8/27/2002 13 0.9 1 93 8/28/2002 8

KS 0.8 1 96 9/12/2002 26 0.7 1 95 9/13/2002 29

MI 0.8 1 93 8/28/2002 8 0.5 1 105 8/29/2002 21

MN 0.7 1 94 8/27/2002 13 0.5 0 93 8/28/2002 8

WY 0.4 0 94 8/27/2002 13 0.3 0 93 8/28/2002 8

Mexico 0.4 0 87 8/26/2002 5 0.2 0 94 8/27/2002 13

NE 0.3 0 94 8/27/2002 13 0.2 0 96 9/12/2002 26

CO 0.3 0 94 8/27/2002 13 0.3 0 87 8/26/2002 5

NM 0.3 0 87 8/26/2002 5 0.2 0 94 8/27/2002 13

SD 0.2 0 94 8/27/2002 13 0.2 0 93 8/28/2002 8

ND 0.2 0 93 8/28/2002 8 0.2 0 94 8/27/2002 13

IC 0 0 88 7/8/2002 10 0 0 94 7/7/2002 31

49
Receptor Area = Chicago 

 Highest Average Contribution Second Highest Average Contribution 

Source Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

IL 66.2 72 109 7/1/2002 7 61.7 66 106 6/30/2002 18

WI 30.9 27 88 8/26/2002 4 30.2 27 91 8/25/2002 10

East 30.6 27 88 8/31/2002 6 29 26 88 8/30/2002 7

BC 28.3 25 87 7/14/2002 1 20.8 19 92 8/3/2002 7

MI 20.8 18 88 8/30/2002 7 19.9 18 92 7/6/2002 7

IN 20.6 19 92 9/7/2002 12 17 16 92 9/8/2002 25

MO 14 13 95 7/3/2002 3 13.6 12 90 8/1/2002 7

Canada 12.1 11 88 8/31/2002 6 11.3 10 88 8/30/2002 7

IA 10.2 11 105 7/18/2002 27 7.9 8 103 7/19/2002 16

MN 7.9 7 91 8/25/2002 10 7 7 99 7/15/2002 11

MS 7.9 7 85 8/13/2002 1 1.7 2 90 8/12/2002 7

TX 7 7 96 7/28/2002 10 5.4 5 96 7/29/2002 4

AR 6.2 5 87 8/16/2002 4 5.5 5 85 8/13/2002 1

TN 5.6 5 85 8/13/2002 1 3.8 3 89 9/9/2002 10

KY 4.6 4 92 9/8/2002 25 3.9 4 105 8/4/2002 34

OK 4.5 4 96 7/22/2002 6 3.7 3 93 7/21/2002 20

KS 4.2 4 93 8/11/2002 6 3.2 3 96 7/29/2002 4

AL 2.7 2 89 9/9/2002 10 2.6 2 85 8/13/2002 1

NE 2.2 2 93 8/11/2002 6 1.6 2 96 7/29/2002 4

West 2 2 91 8/25/2002 10 1.7 1 88 8/26/2002 4

LA 1.7 1 87 8/16/2002 4 1.6 1 85 8/13/2002 1

ND 1.2 1 91 8/25/2002 10 1 1 88 8/26/2002 4

WY 1 1 93 8/11/2002 6 0.6 1 90 8/12/2002 7

SD 0.7 1 87 8/16/2002 4 0.4 0 91 8/25/2002 10

Gulf 0.5 0 87 8/16/2002 4 0.3 0 85 8/13/2002 1

CO 0.4 0 93 8/11/2002 6 0.3 0 85 8/24/2002 1

Mexico 0.3 0 90 8/1/2002 7 0.3 0 96 7/22/2002 6

NM 0.2 0 93 8/11/2002 6 0.2 0 85 8/24/2002 1

IC 0.1 0 106 6/30/2002 18 0 0 109 7/1/2002 7

50
Receptor Area = Denver 

 Highest Average Contribution Second Highest Average Contribution 

Source Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

CO 66.6 62 93 9/7/2002 2 63.6 60 94 9/8/2002 3

BC 48.5 42 87 6/30/2002 5 41.2 37 91 7/1/2002 10

West 16.1 14 87 6/30/2002 5 15.2 14 90 7/2/2002 6

WY 8.6 7 87 7/26/2002 1 7 6 87 7/25/2002 4

TX 6.2 5 87 8/7/2002 1 6.2 5 88 8/8/2002 2

NM 5.8 5 88 7/20/2002 5 5.8 5 88 7/19/2002 14

NE 5.5 5 87 7/10/2002 3 5.2 5 90 7/11/2002 4

SD 2.9 3 87 7/10/2002 3 2.8 3 90 7/11/2002 4

KS 2.8 2 88 8/10/2002 1 2.5 2 91 8/11/2002 3

OK 2.3 2 88 8/10/2002 1 2.1 2 91 8/11/2002 3

Mexico 1.7 2 94 9/8/2002 3 1.4 1 93 9/7/2002 2

East 1.4 1 88 8/8/2002 2 1.4 1 87 8/7/2002 1

LA 0.5 0 88 8/8/2002 2 0.5 0 87 8/7/2002 1

AR 0.5 0 88 8/10/2002 1 0.4 0 91 8/11/2002 3

ND 0.4 0 90 7/11/2002 4 0.4 0 87 7/10/2002 3

MO 0.4 0 88 8/10/2002 1 0.3 0 91 8/11/2002 3

AL 0.4 0 88 8/8/2002 2 0.4 0 87 8/7/2002 1

Canada 0.3 0 89 7/18/2002 6 0.3 0 88 8/10/2002 1

MS 0.3 0 88 8/8/2002 2 0.3 0 87 8/7/2002 1

IC 0.3 0 87 6/30/2002 5 0.2 0 91 7/1/2002 10

MN 0.2 0 90 7/11/2002 4 0.2 0 87 7/10/2002 3

TN 0.2 0 88 8/8/2002 2 0.2 0 87 8/7/2002 1

IN 0.2 0 88 8/10/2002 1 0.1 0 91 8/11/2002 3

IL 0.2 0 88 8/10/2002 1 0.2 0 91 8/11/2002 3

KY 0.1 0 91 8/11/2002 3 0.1 0 88 8/10/2002 1

IA 0.1 0 89 7/18/2002 6 0.1 0 88 7/19/2002 14

MI 0.1 0 88 8/10/2002 1 0.1 0 91 8/11/2002 3

Gulf 0.1 0 88 8/8/2002 2 0.1 0 87 8/7/2002 1

WI 0 0 89 7/18/2002 6 0 0 88 7/19/2002 14

51
Receptor Area = Dallas/Fort Worth 

 Highest Average Contribution Second Highest Average Contribution 

Source Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

TX 80.7 73 91 7/26/2002 9 80.3 76 94 7/25/2002 11

BC 19.5 17 88 9/10/2002 4 18 16 90 9/11/2002 13

OK 18 17 93 7/14/2002 26 17.9 17 93 7/15/2002 23

East 17.5 16 94 8/31/2002 56 14.9 14 91 9/1/2002 23

LA 14.4 13 94 9/5/2002 31 12.5 12 96 7/7/2002 45

AR 13.5 14 100 8/7/2002 56 13.4 13 95 8/8/2002 31

TN 7.8 7 89 9/7/2002 9 5.5 5 96 8/9/2002 33

MS 7.7 7 91 9/6/2002 38 7.3 7 94 9/5/2002 31

AL 6.5 6 91 9/1/2002 23 6.2 6 94 9/5/2002 31

KS 6 6 93 7/14/2002 26 5.9 5 93 7/15/2002 23

MO 4 4 93 7/15/2002 23 3.8 4 93 9/12/2002 23

IN 3.5 3 90 8/30/2002 20 2.2 2 89 8/29/2002 13

KY 3.5 3 89 9/7/2002 9 3.2 3 96 8/9/2002 33

IL 3.4 3 90 8/30/2002 20 3 3 89 8/29/2002 13

Canada 2.9 3 90 8/30/2002 20 1.5 1 96 8/9/2002 33

West 1.9 2 89 8/28/2002 10 1.7 1 89 8/29/2002 13

NE 1.5 1 93 7/14/2002 26 1.4 1 93 7/15/2002 23

IA 1.2 1 93 7/14/2002 26 1.2 1 93 7/15/2002 23

Mexico 1.1 1 91 7/26/2002 9 1 1 94 7/25/2002 11

Gulf 1.1 1 88 7/11/2002 16 0.9 1 90 9/3/2002 16

MI 0.9 1 90 8/30/2002 20 0.9 1 89 8/29/2002 13

WI 0.9 1 89 8/28/2002 10 0.7 1 89 8/29/2002 13

MN 0.7 1 89 8/28/2002 10 0.7 1 93 7/14/2002 26

SD 0.4 0 93 7/14/2002 26 0.4 0 93 7/15/2002 23

WY 0.4 0 89 8/28/2002 10 0.3 0 89 8/29/2002 13

NM 0.4 0 89 8/28/2002 10 0.4 0 88 8/27/2002 4

CO 0.4 0 88 9/10/2002 4 0.4 0 89 8/28/2002 10

ND 0.3 0 89 8/28/2002 10 0.3 0 89 8/29/2002 13

IC 0 0 96 7/7/2002 45 0 0 88 7/11/2002 16

52
Receptor Area = El Paso 

 Highest Average Contribution Second Highest Average Contribution 

Source Area % total ppb total ppb date # values % total ppb total ppb date # values 

WY 0 0 0 none 0 0 0 0 none 0

WI 0 0 0 none 0 0 0 0 none 0

West 0 0 0 none 0 0 0 0 none 0

TX 0 0 0 none 0 0 0 0 none 0

TN 0 0 0 none 0 0 0 0 none 0

SD 0 0 0 none 0 0 0 0 none 0

OK 0 0 0 none 0 0 0 0 none 0

NM 0 0 0 none 0 0 0 0 none 0

NE 0 0 0 none 0 0 0 0 none 0

ND 0 0 0 none 0 0 0 0 none 0

MS 0 0 0 none 0 0 0 0 none 0

MO 0 0 0 none 0 0 0 0 none 0

MN 0 0 0 none 0 0 0 0 none 0

MI 0 0 0 none 0 0 0 0 none 0

Mexico 0 0 0 none 0 0 0 0 none 0

LA 0 0 0 none 0 0 0 0 none 0

KY 0 0 0 none 0 0 0 0 none 0

KS 0 0 0 none 0 0 0 0 none 0

IN 0 0 0 none 0 0 0 0 none 0

IL 0 0 0 none 0 0 0 0 none 0

IC 0 0 0 none 0 0 0 0 none 0

IA 0 0 0 none 0 0 0 0 none 0

Gulf 0 0 0 none 0 0 0 0 none 0

East 0 0 0 none 0 0 0 0 none 0

CO 0 0 0 none 0 0 0 0 none 0

Canada 0 0 0 none 0 0 0 0 none 0

BC 0 0 0 none 0 0 0 0 none 0

AR 0 0 0 none 0 0 0 0 none 0

AL 0 0 0 none 0 0 0 0 none 0

53
Receptor Area = Houston/Galveston/Brazoria 

 Highest Average Contribution Second Highest Average Contribution 

Source Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

TX 80.6 69 85 7/25/2002 1 76.7 67 87 7/24/2002 2

LA 18.9 18 95 8/8/2002 36 17.6 17 94 8/5/2002 24

BC 18.9 16 86 7/23/2002 2 17.7 15 87 7/24/2002 2

East 16.2 14 86 9/1/2002 2 14.8 15 100 8/30/2002 97

Gulf 8.2 7 87 8/9/2002 1 7.5 7 92 9/15/2002 16

MS 7.6 7 97 8/31/2002 135 6.8 7 100 8/30/2002 97

AL 7.2 7 97 8/31/2002 135 7.2 7 92 9/15/2002 16

AR 7 6 93 8/29/2002 57 4.9 5 103 9/12/2002 89

TN 5.2 5 100 8/30/2002 97 3.2 3 106 9/13/2002 189

KY 3.5 4 100 8/30/2002 97 3.2 3 93 8/29/2002 57

IN 2.6 2 93 8/29/2002 57 2 2 100 8/30/2002 97

MO 2.3 2 106 9/13/2002 189 2.1 2 103 9/12/2002 89

IL 2.3 2 93 8/29/2002 57 2 2 106 9/13/2002 189

Canada 1.5 1 93 8/29/2002 57 1.4 1 100 8/30/2002 97

West 1.4 1 92 8/28/2002 24 1.1 1 93 8/29/2002 57

MI 1 1 93 8/29/2002 57 0.6 1 100 8/30/2002 97

KS 0.6 1 106 9/13/2002 189 0.6 1 103 9/14/2002 122

WI 0.5 0 92 8/28/2002 24 0.5 0 93 8/29/2002 57

OK 0.5 0 92 8/28/2002 24 0.5 1 103 9/12/2002 89

IA 0.5 0 92 8/28/2002 24 0.3 0 103 9/14/2002 122

MN 0.4 0 92 8/28/2002 24 0.4 0 93 8/29/2002 57

WY 0.3 0 92 8/28/2002 24 0.2 0 93 8/29/2002 57

CO 0.3 0 92 8/28/2002 24 0.2 0 93 8/29/2002 57

ND 0.2 0 93 8/29/2002 57 0.2 0 92 8/28/2002 24

SD 0.2 0 92 8/28/2002 24 0.1 0 93 8/29/2002 57

NM 0.2 0 92 8/28/2002 24 0.1 0 93 8/29/2002 57

NE 0.2 0 92 8/28/2002 24 0.1 0 93 8/29/2002 57

Mexico 0.2 0 92 8/28/2002 24 0.1 0 93 8/29/2002 57

IC 0 0 88 7/7/2002 19 0 0 90 7/8/2002 34

54
Receptor Area = Kansas City 

 Highest Average Contribution Second Highest Average Contribution 

Source Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

KS 44.3 38 87 8/24/2002 1 42.9 39 90 8/3/2002 6

MO 28.4 26 90 9/5/2002 7 26.2 24 91 7/6/2002 13

OK 21.6 19 87 7/31/2002 2 19.6 18 90 8/23/2002 3

BC 19.7 17 87 9/10/2002 1 19.6 17 87 9/9/2002 4

TX 18.6 16 87 7/18/2002 3 16.5 15 89 7/27/2002 3

East 17.2 15 88 8/31/2002 4 17 15 87 9/9/2002 4

IL 13.1 11 85 8/7/2002 1 11.1 10 91 7/7/2002 20

AR 10.9 9 87 9/1/2002 4 10.4 9 87 9/9/2002 4

TN 6.9 6 87 9/1/2002 4 6.2 5 86 9/2/2002 2

IN 6.7 6 91 7/7/2002 20 6.2 5 88 8/31/2002 4

AL 4.9 4 87 9/9/2002 4 4.3 4 87 9/10/2002 1

MS 4.5 4 87 7/4/2002 3 2.8 2 87 9/9/2002 4

KY 4.3 4 91 7/6/2002 13 4.1 4 88 8/31/2002 4

LA 3.7 3 87 7/4/2002 3 2.9 3 87 7/5/2002 8

Canada 2.6 2 90 8/9/2002 6 2.5 2 88 8/31/2002 4

IA 2.4 2 90 8/3/2002 6 2.1 2 85 8/7/2002 1

NE 1.8 2 87 8/24/2002 1 1.3 1 90 8/23/2002 3

WI 1.7 1 85 8/7/2002 1 0.7 1 89 7/25/2002 2

West 1.5 1 89 7/25/2002 2 1.2 1 89 8/5/2002 9

MI 1.4 1 85 8/7/2002 1 1.2 1 90 8/9/2002 6

MN 1.3 1 90 8/3/2002 6 1 1 89 7/25/2002 2

Mexico 1 1 89 7/27/2002 3 0.9 1 89 7/26/2002 7

Gulf 0.6 1 87 7/4/2002 3 0.6 0 87 7/18/2002 3

NM 0.5 0 87 8/24/2002 1 0.5 0 88 8/11/2002 1

CO 0.5 0 87 8/24/2002 1 0.4 0 88 8/11/2002 1

SD 0.4 0 89 7/25/2002 2 0.2 0 89 8/5/2002 9

ND 0.4 0 89 7/25/2002 2 0.2 0 90 9/5/2002 7

WY 0.4 0 87 7/31/2002 2 0.3 0 87 8/24/2002 1

IC 0 0 87 7/5/2002 8 0 0 87 7/4/2002 3

55
Receptor Area = Memphis 

 Highest Average Contribution Second Highest Average Contribution 

Source Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

TN 47.5 47 98 8/3/2002 27 46.9 47 101 8/2/2002 12

AR 43 38 90 7/17/2002 4 33.4 30 91 7/10/2002 5

East 35.6 34 95 8/29/2002 18 31.1 29 93 8/30/2002 22

MS 26.7 25 93 8/11/2002 2 20.5 19 93 8/22/2002 11

BC 19.3 17 88 9/13/2002 2 19 17 88 9/14/2002 2

AL 15.3 14 91 8/23/2002 3 15.2 14 93 8/22/2002 11

MO 15 14 94 8/25/2002 3 13.9 13 91 8/26/2002 2

TX 14.8 13 87 7/22/2002 2 12.1 11 94 8/1/2002 3

LA 14.7 14 93 7/27/2002 2 9.6 9 94 7/31/2002 4

KY 13.4 13 94 7/5/2002 23 13.1 12 90 8/27/2002 10

IL 13.2 12 90 8/7/2002 3 11.6 11 92 9/11/2002 11

IN 11 10 90 8/27/2002 10 10.2 10 99 7/6/2002 29

IA 5 5 94 8/25/2002 3 4.9 4 91 8/26/2002 2

MI 4.4 4 90 8/27/2002 10 1.9 2 89 8/28/2002 14

Canada 4.2 4 95 8/29/2002 18 3.7 3 89 8/28/2002 14

OK 2.9 3 91 7/11/2002 6 2.3 2 88 7/23/2002 5

KS 2.6 2 91 7/11/2002 6 1.4 1 94 8/25/2002 3

WI 1.8 2 95 7/24/2002 5 1.7 2 90 8/27/2002 10

West 1.7 2 90 8/27/2002 10 1.5 1 91 8/26/2002 2

Gulf 1.6 1 93 7/27/2002 2 1.1 1 91 8/23/2002 3

MN 1.1 1 91 8/26/2002 2 1.1 1 90 8/27/2002 10

NE 0.7 1 94 8/25/2002 3 0.7 1 91 8/26/2002 2

WY 0.7 1 91 8/26/2002 2 0.7 1 94 8/25/2002 3

SD 0.5 0 91 8/26/2002 2 0.5 1 94 8/25/2002 3

CO 0.5 0 91 8/26/2002 2 0.5 0 94 8/25/2002 3

ND 0.5 0 90 8/27/2002 10 0.3 0 95 7/24/2002 5

NM 0.4 0 87 8/20/2002 2 0.2 0 92 8/21/2002 4

Mexico 0.3 0 87 8/20/2002 2 0.3 0 94 8/1/2002 3

IC 0 0 95 7/2/2002 25 0 0 97 7/3/2002 28

56
Receptor Area = Oklahoma City 

 Highest Average Contribution Second Highest Average Contribution 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

Source Area values 

OK 64.2 55 86 7/25/2002 1 63.1 55 87 7/24/2002 6

TX 33.5 29 86 9/3/2002 1 29.2 26 91 7/10/2002 17

BC 22.1 19 86 8/6/2002 2 18.9 17 88 8/5/2002 5

East 14.3 13 88 8/5/2002 5 14.3 12 86 9/1/2002 1

AR 14.3 13 87 9/7/2002 2 12.6 11 87 8/31/2002 2

MO 13.9 12 88 8/7/2002 6 5.9 5 86 8/29/2002 1

KS 11.6 10 87 7/23/2002 3 9.8 8 87 7/13/2002 2

LA 8.2 7 91 9/5/2002 11 5.3 5 86 9/3/2002 1

MS 6.7 6 88 8/5/2002 5 6 5 91 9/5/2002 11

TN 6.2 5 86 8/6/2002 2 4.9 4 87 9/7/2002 2

AL 5.8 5 86 9/1/2002 1 5.7 5 88 8/5/2002 5

IL 5 4 88 8/7/2002 6 4.1 3 86 8/29/2002 1

IN 3.7 3 91 8/9/2002 3 3.4 3 92 8/8/2002 10

KY 3.4 3 91 8/9/2002 3 3.4 3 87 8/31/2002 2

NE 3.4 3 87 7/13/2002 2 1.7 1 87 7/23/2002 3

Canada 2.1 2 87 8/31/2002 2 1.7 1 86 8/29/2002 1

MI 1.5 1 91 8/9/2002 3 1.5 1 92 8/8/2002 10

IA 1.4 1 87 7/23/2002 3 1.2 1 87 7/13/2002 2

MN 1.3 1 87 7/13/2002 2 0.7 1 86 8/29/2002 1

West 1.3 1 86 8/29/2002 1 1.1 1 86 8/6/2002 2

Gulf 0.9 1 87 8/11/2002 2 0.7 1 89 8/10/2002 3

SD 0.9 1 87 7/13/2002 2 0.5 0 87 7/23/2002 3

NM 0.9 1 86 9/3/2002 1 0.7 1 86 9/4/2002 1

WI 0.8 1 86 8/29/2002 1 0.6 1 87 7/13/2002 2

ND 0.7 1 87 7/23/2002 3 0.4 0 87 7/13/2002 2

Mexico 0.7 1 87 7/23/2002 3 0.6 1 86 9/3/2002 1

CO 0.3 0 86 9/3/2002 1 0.3 0 86 9/4/2002 1

WY 0.3 0 86 8/6/2002 2 0.2 0 88 7/11/2002 11

IC 0 0 91 7/10/2002 17 0 0 88 7/11/2002 11

57
Receptor Area = Phoenix 

 Highest Average Contribution Second Highest Average Contribution 

Source Area % total ppb total ppb date # values % total ppb total ppb date # values 

WY 0 0 0 none 0 0 0 0 none 0

WI 0 0 0 none 0 0 0 0 none 0

West 0 0 0 none 0 0 0 0 none 0

TX 0 0 0 none 0 0 0 0 none 0

TN 0 0 0 none 0 0 0 0 none 0

SD 0 0 0 none 0 0 0 0 none 0

OK 0 0 0 none 0 0 0 0 none 0

NM 0 0 0 none 0 0 0 0 none 0

NE 0 0 0 none 0 0 0 0 none 0

ND 0 0 0 none 0 0 0 0 none 0

MS 0 0 0 none 0 0 0 0 none 0

MO 0 0 0 none 0 0 0 0 none 0

MN 0 0 0 none 0 0 0 0 none 0

MI 0 0 0 none 0 0 0 0 none 0

Mexico 0 0 0 none 0 0 0 0 none 0

LA 0 0 0 none 0 0 0 0 none 0

KY 0 0 0 none 0 0 0 0 none 0

KS 0 0 0 none 0 0 0 0 none 0

IN 0 0 0 none 0 0 0 0 none 0

IL 0 0 0 none 0 0 0 0 none 0

IC 0 0 0 none 0 0 0 0 none 0

IA 0 0 0 none 0 0 0 0 none 0

Gulf 0 0 0 none 0 0 0 0 none 0

East 0 0 0 none 0 0 0 0 none 0

CO 0 0 0 none 0 0 0 0 none 0

Canada 0 0 0 none 0 0 0 0 none 0

BC 0 0 0 none 0 0 0 0 none 0

AR 0 0 0 none 0 0 0 0 none 0

AL 0 0 0 none 0 0 0 0 none 0

58
Receptor Area = San Antonio 

 Highest Average Contribution Second Highest Average Contribution 

Source Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

TX 66.3 59 89 8/7/2002 4 61.8 55 89 8/8/2002 7

LA 16 14 89 8/9/2002 1 14.1 13 94 8/31/2002 25

BC 14.2 13 91 9/12/2002 9 13.7 12 90 9/6/2002 9

East 14 13 94 8/31/2002 25 11.4 10 89 8/30/2002 11

AR 6.6 6 91 9/12/2002 9 4.7 4 89 8/30/2002 11

AL 6.5 6 94 8/31/2002 25 4.7 4 90 9/6/2002 9

MS 5.9 5 94 8/31/2002 25 5.1 5 90 9/6/2002 9

TN 4.6 4 91 9/12/2002 9 3.9 3 90 9/6/2002 9

Gulf 3.7 3 89 8/9/2002 1 3 3 94 8/31/2002 25

KY 3.3 3 91 9/12/2002 9 3.1 3 89 8/30/2002 11

OK 2.7 2 91 9/12/2002 9 1.6 2 94 9/13/2002 23

IN 2.2 2 89 8/30/2002 11 1.6 1 93 9/14/2002 10

IL 2 2 89 8/30/2002 11 1.4 1 93 9/14/2002 10

MO 1.8 2 91 9/12/2002 9 1.8 2 94 9/13/2002 23

Canada 1.8 2 89 8/30/2002 11 0.8 1 94 8/31/2002 25

KS 0.9 1 91 9/12/2002 9 0.7 1 94 9/13/2002 23

West 0.8 1 89 8/30/2002 11 0.5 0 91 9/12/2002 9

MI 0.8 1 89 8/30/2002 11 0.3 0 94 8/31/2002 25

Mexico 0.3 0 89 8/7/2002 4 0.1 0 89 8/8/2002 7

NE 0.2 0 91 9/12/2002 9 0.2 0 94 9/13/2002 23

CO 0.2 0 91 9/12/2002 9 0.2 0 94 9/13/2002 23

WY 0.2 0 89 8/30/2002 11 0.1 0 91 9/12/2002 9

WI 0.2 0 89 8/30/2002 11 0.1 0 94 8/31/2002 25

MN 0.2 0 89 8/30/2002 11 0.1 0 94 8/31/2002 25

IA 0.2 0 87 7/8/2002 4 0.1 0 87 7/9/2002 3

NM 0.1 0 91 9/12/2002 9 0.1 0 89 8/30/2002 11

SD 0.1 0 89 8/30/2002 11 0.1 0 91 9/12/2002 9

ND 0.1 0 89 8/30/2002 11 0.1 0 94 8/31/2002 25

IC 0 0 87 7/8/2002 4 0 0 87 7/9/2002 3

59
Receptor Area = Saint Louis 

 Highest Average Contribution Second Highest Average Contribution 

Source Area 

% 

total ppb 

total 

ppb date 

# 

values 

% 

total ppb

total 

ppb date 

# 

values 

MO 63.1 66 104 8/1/2002 9 54.4 48 89 7/18/2002 5

IL 44.5 41 93 8/21/2002 15 42.5 38 88 9/16/2002 1

East 30 27 88 8/30/2002 5 25.1 22 86 8/29/2002 2

BC 20.1 18 92 9/6/2002 14 20.1 18 88 7/7/2002 7

AR 15.6 14 93 8/19/2002 2 10.2 9 89 7/18/2002 5

IN 14.8 14 92 8/9/2002 4 14.4 13 92 9/6/2002 14

KY 12.2 12 95 9/1/2002 8 11.4 11 97 8/4/2002 25

IA 11.8 10 88 8/25/2002 5 10.7 10 92 8/24/2002 6

Canada 11.6 10 86 8/29/2002 2 9.7 8 87 8/28/2002 4

TX 10.6 10 97 7/19/2002 7 10.2 9 93 8/19/2002 2

TN 10.6 10 90 9/8/2002 7 9.3 9 101 9/9/2002 29

MI 10.3 9 87 8/7/2002 4 5.6 5 87 8/28/2002 4

WI 9.4 8 87 7/23/2002 4 7.8 7 87 7/24/2002 10

OK 7.3 7 97 7/19/2002 7 6.6 6 97 7/20/2002 11

MN 7.3 6 87 7/23/2002 4 6.9 6 88 8/26/2002 9

AL 6.4 6 90 9/8/2002 7 3.5 4 101 9/9/2002 29

KS 5.3 5 97 7/30/2002 17 4.2 4 96 7/10/2002 40

West 3.7 3 88 8/26/2002 9 3.1 3 88 8/27/2002 9

LA 2.8 3 93 8/19/2002 2 1.3 1 92 8/20/2002 9

MS 1.9 2 89 9/3/2002 4 1.8 2 90 9/8/2002 7

ND 1.8 2 88 8/26/2002 9 1.6 1 88 8/27/2002 9

NE 1.7 2 97 7/30/2002 17 1.4 1 90 9/4/2002 2

SD 0.9 1 97 7/30/2002 17 0.9 1 90 9/4/2002 2

Gulf 0.7 1 93 8/19/2002 2 0.4 0 89 7/18/2002 5

WY 0.7 1 88 8/25/2002 5 0.5 1 92 8/24/2002 6

Mexico 0.6 1 97 7/30/2002 17 0.4 0 92 8/24/2002 6

CO 0.6 0 88 8/25/2002 5 0.5 0 92 8/24/2002 6

NM 0.4 0 89 9/3/2002 4 0.4 0 90 9/4/2002 2

IC 0 0 101 7/4/2002 49 0 0 104 7/3/2002 32

60
Receptor Area = 

Milwaukee 

Highest Average 

Contribution 

Second Highest Average 

Contribution 

Source Area % total ppb total 

ppb 

date # 

values

% total ppb total 

ppb 

date # 

values

WI 70.8 67 95 8/25/2002 3 70.6 63 89 8/26/2002 2

IL 39.7 36 90 7/9/2002 34 36.8 32 87 7/4/2002 2

IN 24.5 21 85 9/18/2002 1 24.3 22 89 9/19/2002 26

East 21.7 20 92 9/1/2002 6 17.5 16 91 9/2/2002 10

BC 18.8 17 92 7/14/2002 6 14.1 12 85 9/18/2002 1

MN 13.3 12 93 7/30/2002 8 7.4 8 106 7/15/2002 14

MI 12.7 12 92 9/1/2002 6 8.3 8 100 7/7/2002 12

MO 11.5 11 93 8/1/2002 15 10.9 10 88 7/3/2002 2

IA 8.3 8 95 8/11/2002 13 7.6 6 85 7/19/2002 1

TN 7.9 7 92 9/20/2002 23 5.3 5 90 9/3/2002 15

AL 7.4 7 92 9/20/2002 23 2.8 3 93 8/14/2002 10

MS 6.5 6 92 9/20/2002 23 6.5 6 93 8/14/2002 10

KY 6.3 6 89 9/19/2002 26 5 4 85 9/18/2002 1

LA 5.6 5 92 9/20/2002 23 2.4 2 95 8/13/2002 41

AR 5.5 5 95 8/13/2002 41 5.4 5 90 9/3/2002 15

Canada 5.3 5 89 8/10/2002 1 5 5 93 7/30/2002 8

TX 5.1 5 96 7/28/2002 62 4.3 4 103 7/22/2002 16

OK 4.3 4 88 8/2/2002 3 4.3 4 103 7/22/2002 16

KS 3.8 4 98 7/2/2002 13 3.7 4 104 7/21/2002 17

ND 2.8 3 93 7/30/2002 8 1.1 1 95 8/25/2002 3

West 2.7 2 93 7/30/2002 8 1.9 2 100 7/31/2002 11

NE 1.9 2 95 8/11/2002 13 1.3 1 107 7/29/2002 27

Gulf 1.3 1 92 9/20/2002 23 0.4 0 98 7/2/2002 13

SD 1 1 93 7/30/2002 8 0.9 1 100 7/31/2002 11

WY 0.6 1 95 8/11/2002 13 0.5 1 107 7/29/2002 27

CO 0.4 0 89 8/21/2002 1 0.3 0 89 8/22/2002 9

Mexico 0.4 0 88 8/2/2002 3 0.3 0 103 7/22/2002 16

NM 0.2 0 90 9/3/2002 15 0.2 0 89 8/21/2002 1

IC 0.1 0 107 7/1/2002 67 0.1 0 98 7/2/2002 13

61
Table C-3 

Receptor Area total ppb impact from each source Region 

62
Receptor Area = BPA 

Total ppb = 36575.58; Anthro ppb = 33348.62; # Values = 384 

Source Area ppb 

% 

Anthro 

Cum % 

Anthro 

TX 13070.59 39.19 39.19

LA 7862.66 23.58 62.77

East 2991.15 8.97 71.74

MS 2160.52 6.48 78.22

AL 1589.91 4.77 82.99

Gulf 1234.22 3.7 86.69

TN 996.71 2.99 89.68

AR 805.47 2.42 92.09

KY 615.55 1.85 93.94

IL 416.54 1.25 95.19

IN 383.99 1.15 96.34

MO 366.34 1.1 97.44

Canada 185.65 0.56 97.99

West 127.87 0.38 98.38

KS 107.78 0.32 98.7

IA 73 0.22 98.92

MI 68.03 0.2 99.12

OK 58.38 0.18 99.3

WI 57.59 0.17 99.47

NE 37.5 0.11 99.58

CO 32.68 0.1 99.68

WY 30.84 0.09 99.77

ND 20.48 0.06 99.83

SD 18.94 0.06 99.89

NM 18.44 0.06 99.95

Mexico 17.8 0.05 100

63
Receptor Area = BTR 

Total ppb = 44132.92; Anthro ppb = 39470.06; # Values = 465 

Source Area ppb 

% 

Anthro 

Cum % 

Anthro 

LA 23617.61 59.84 59.84

East 4527.91 11.47 71.31

MS 3420.97 8.67 79.98

AL 2723.1 6.9 86.87

Gulf 1191.81 3.02 89.89

TN 890.24 2.26 92.15

TX 867.82 2.2 94.35

KY 442.25 1.12 95.47

AR 277.39 0.7 96.17

IL 268.26 0.68 96.85

IN 246.56 0.62 97.48

MO 186.87 0.47 97.95

West 142.59 0.36 98.31

Canada 139.81 0.35 98.67

KS 82.51 0.21 98.87

OK 79.41 0.2 99.08

IA 64.79 0.16 99.24

WI 59.16 0.15 99.39

MI 55.16 0.14 99.53

WY 36.3 0.09 99.62

CO 35.51 0.09 99.71

NE 34.4 0.09 99.8

SD 20.68 0.05 99.85

NM 20.23 0.05 99.9

ND 19.93 0.05 99.95

Mexico 18.77 0.05 100

64
Receptor Area = CHI 

Total ppb = 44628.95; Anthro ppb = 38885.13; # Values = 459 

Source Area ppb 

% 

Anthro 

Cum % 

Anthro 

IL 21749.81 55.93 55.93

IN 2914.03 7.49 63.43

WI 2821.7 7.26 70.68

MO 2697.14 6.94 77.62

MI 1632.16 4.2 81.82

East 1324.4 3.41 85.22

IA 1224.32 3.15 88.37

Canada 759.98 1.95 90.33

KY 624.65 1.61 91.93

KS 511.25 1.31 93.25

AR 472.96 1.22 94.46

TX 466.66 1.2 95.66

OK 448.15 1.15 96.82

TN 250.35 0.64 97.46

West 248.2 0.64 98.1

NE 138.83 0.36 98.46

AL 104.53 0.27 98.72

LA 97.76 0.25 98.98

MS 80.87 0.21 99.18

ND 67.41 0.17 99.36

SD 66.18 0.17 99.53

WY 63.74 0.16 99.69

CO 47.29 0.12 99.81

Mexico 30.81 0.08 99.89

Gulf 24.65 0.06 99.96

NM 17.3 0.04 100

65
Receptor Area = DEN 

Total ppb = 6233.26; Anthro ppb = 4304.93; # Values = 70 

Source Area ppb 

% 

Anthro 

Cum % 

Anthro 

CO 3071.13 71.34 71.34

West 458.67 10.65 81.99

WY 179.41 4.17 86.16

NM 175.88 4.09 90.25

TX 170.53 3.96 94.21

NE 58.24 1.35 95.56

Mexico 49.97 1.16 96.72

KS 30.99 0.72 97.44

SD 26.7 0.62 98.06

OK 23.03 0.53 98.6

East 12.44 0.29 98.89

Canada 9.82 0.23 99.11

MO 4.86 0.11 99.23

ND 4.48 0.1 99.33

LA 4.48 0.1 99.44

AR 3.55 0.08 99.52

IL 3.35 0.08 99.6

AL 3.09 0.07 99.67

MS 2.66 0.06 99.73

IA 2.32 0.05 99.78

TN 2.19 0.05 99.83

IN 2 0.05 99.88

KY 1.66 0.04 99.92

Gulf 1.45 0.03 99.95

WI 1.05 0.02 99.98

MI 0.98 0.02 100

66
Receptor Area = DFW 

Total ppb = 112122.81; Anthro ppb = 99339.01; # Values = 

1173 

Source Area ppb 

% 

Anthro 

Cum % 

Anthro 

TX 57753.24 58.14 58.14

East 7574.47 7.62 65.76

LA 6707.36 6.75 72.51

AR 5979.21 6.02 78.53

MS 3928.71 3.95 82.49

AL 3271.39 3.29 85.78

OK 2965.01 2.98 88.77

TN 2806.15 2.82 91.59

KY 1412.48 1.42 93.01

MO 1284.75 1.29 94.31

IL 995.1 1 95.31

IN 867.84 0.87 96.18

KS 806.65 0.81 96.99

Canada 632.88 0.64 97.63

West 513.98 0.52 98.15

Gulf 354.55 0.36 98.5

IA 263.08 0.26 98.77

MI 222.5 0.22 98.99

NE 220.39 0.22 99.22

WI 148.67 0.15 99.37

Mexico 145.16 0.15 99.51

WY 124.03 0.12 99.64

CO 111.42 0.11 99.75

SD 95.53 0.1 99.84

ND 82.55 0.08 99.93

NM 71.9 0.07 100

67
Receptor Area = ELP 

Total ppb = NA; Anthro ppb = NA; # Values = NA 

Source Area ppb 

% 

Anthro 

Cum % 

Anthro 

WY NA NA NA 

WI NA NA NA 

West NA NA NA 

TX NA NA NA 

TN NA NA NA 

SD NA NA NA 

OK NA NA NA 

NM NA NA NA 

NE NA NA NA 

ND NA NA NA 

MS NA NA NA 

MO NA NA NA 

MI NA NA NA 

Mexico NA NA NA 

LA NA NA NA 

KY NA NA NA 

KS NA NA NA 

IN NA NA NA 

IL NA NA NA 

IA NA NA NA 

Gulf NA NA NA 

East NA NA NA 

CO NA NA NA 

Canada NA NA NA 

AR NA NA NA 

AL NA NA NA 

68
Receptor Area = HGB 

Total ppb = 103545.56; Anthro ppb = 94208.17; # Values = 

1047 

Source Area ppb 

% 

Anthro 

Cum % 

Anthro 

TX 47955.97 50.9 50.9

LA 13395.93 14.22 65.12

East 8010.07 8.5 73.63

MS 4736.11 5.03 78.65

AL 3343.35 3.55 82.2

AR 3103.48 3.29 85.5

Gulf 3022.44 3.21 88.7

TN 2676.29 2.84 91.55

KY 1864.89 1.98 93.53

IL 1208.33 1.28 94.81

IN 1168.51 1.24 96.05

MO 1148.38 1.22 97.27

Canada 582.7 0.62 97.89

West 401.16 0.43 98.31

KS 298.01 0.32 98.63

OK 240.3 0.26 98.88

MI 199.46 0.21 99.09

IA 180.89 0.19 99.29

WI 141.49 0.15 99.44

CO 108.99 0.12 99.55

NE 98.89 0.1 99.66

WY 96.45 0.1 99.76

NM 62.03 0.07 99.83

ND 61.15 0.06 99.89

SD 54.77 0.06 99.95

Mexico 48.11 0.05 100

69
Receptor Area = KC 

Total ppb = 19468.27; Anthro ppb = 16607.99; # Values = 216 

Source Area ppb 

% 

Anthro 

Cum % 

Anthro 

KS 6810.84 41.01 41.01

MO 3234.8 19.48 60.49

OK 1310.01 7.89 68.37

AR 942.35 5.67 74.05

IL 784.12 4.72 78.77

East 714.54 4.3 83.07

TX 623.8 3.76 86.83

IN 435.77 2.62 89.45

KY 327.67 1.97 91.43

TN 325.37 1.96 93.38

MS 178.38 1.07 94.46

AL 166.56 1 95.46

Canada 129.71 0.78 96.24

LA 119.44 0.72 96.96

West 117.06 0.7 97.67

IA 77.54 0.47 98.13

MI 69.02 0.42 98.55

WI 43.59 0.26 98.81

NE 39.39 0.24 99.05

Mexico 31.58 0.19 99.24

WY 27.88 0.17 99.41

CO 25.22 0.15 99.56

NM 20.21 0.12 99.68

SD 19.5 0.12 99.8

Gulf 18.28 0.11 99.91

ND 15.35 0.09 100

70
Receptor Area = MEM 

Total ppb = 74754.76; Anthro ppb = 67083.18; # Values = 781 

Source Area ppb 

% 

Anthro 

Cum % 

Anthro 

TN 24680.2 36.79 36.79

AR 10950.29 16.32 53.11

East 8166.72 12.17 65.29

KY 4703.49 7.01 72.3

MS 4296.21 6.4 78.7

AL 3092.16 4.61 83.31

MO 2228.12 3.32 86.63

IN 2170.36 3.24 89.87

IL 2136.9 3.19 93.06

LA 969.09 1.44 94.5

TX 890.06 1.33 95.83

Canada 727.21 1.08 96.91

MI 324.34 0.48 97.39

West 284.88 0.42 97.82

OK 265.73 0.4 98.22

KS 210.71 0.31 98.53

WI 197.73 0.29 98.82

IA 183.15 0.27 99.1

Gulf 167.16 0.25 99.35

NE 99.72 0.15 99.49

WY 74.46 0.11 99.61

CO 65.34 0.1 99.7

ND 63.98 0.1 99.8

SD 63.36 0.09 99.89

Mexico 39.34 0.06 99.95

NM 32.44 0.05 100

71
Receptor Area = OKC 

Total ppb = 12751.49; Anthro ppb = 11095.86; # Values = 142 

Source Area ppb 

% 

Anthro 

Cum % 

Anthro 

OK 5217.73 47.02 47.02

TX 1992.68 17.96 64.98

AR 716.97 6.46 71.44

East 707.27 6.37 77.82

LA 413.86 3.73 81.55

MS 339.24 3.06 84.61

AL 276.57 2.49 87.1

TN 264.75 2.39 89.48

MO 211.14 1.9 91.39

KS 151.44 1.36 92.75

KY 149.22 1.34 94.1

IL 136.66 1.23 95.33

IN 118.75 1.07 96.4

Canada 73.16 0.66 97.06

West 72.69 0.66 97.71

MI 45.01 0.41 98.12

NE 37.46 0.34 98.46

IA 34.91 0.31 98.77

Gulf 22.39 0.2 98.97

WI 21.78 0.2 99.17

WY 18.86 0.17 99.34

Mexico 18.08 0.16 99.5

SD 16.09 0.15 99.65

CO 13.71 0.12 99.77

NM 12.97 0.12 99.89

ND 12.5 0.11 100

72
Receptor Area = PHX 

Total ppb = NA; Anthro ppb = NA; # Values = NA 

Source Area ppb 

% 

Anthro 

Cum % 

Anthro 

WY NA NA NA 

WI NA NA NA 

West NA NA NA 

TX NA NA NA 

TN NA NA NA 

SD NA NA NA 

OK NA NA NA 

NM NA NA NA 

NE NA NA NA 

ND NA NA NA 

MS NA NA NA 

MO NA NA NA 

MI NA NA NA 

Mexico NA NA NA 

LA NA NA NA 

KY NA NA NA 

KS NA NA NA 

IN NA NA NA 

IL NA NA NA 

IA NA NA NA 

Gulf NA NA NA 

East NA NA NA 

CO NA NA NA 

Canada NA NA NA 

AR NA NA NA 

AL NA NA NA 

73
Receptor Area = San Antonio 

Total ppb = 10070.39; Anthro ppb = 8877.24; # Values = 110 

Source Area ppb 

% 

Anthro 

Cum % 

Anthro 

TX 4734.79 53.34 53.34

East 914.96 10.31 63.64

LA 872.62 9.83 73.47

MS 387.03 4.36 77.83

AL 347.69 3.92 81.75

TN 322.8 3.64 85.39

AR 319.81 3.6 88.99

KY 213.13 2.4 91.39

Gulf 122.39 1.38 92.77

IN 111.34 1.25 94.02

MO 104.39 1.18 95.2

IL 103.27 1.16 96.36

OK 76.68 0.86 97.22

Canada 59.79 0.67 97.9

West 46.43 0.52 98.42

KS 36.13 0.41 98.83

MI 20.54 0.23 99.06

CO 14.45 0.16 99.22

WY 11.29 0.13 99.35

NE 10.29 0.12 99.47

IA 9.58 0.11 99.57

NM 9.14 0.1 99.68

Mexico 8.98 0.1 99.78

WI 8.74 0.1 99.88

SD 5.51 0.06 99.94

ND 5.48 0.06 100

74
Receptor Area = Saint Louis 

Total ppb = 90940.89; Anthro ppb = 80081.38; # Values = 931 

Source Area ppb 

% 

Anthro 

Cum % 

Anthro 

MO 28351.7 35.4 35.4

IL 25909.44 32.35 67.76

IN 5117.25 6.39 74.15

East 5078.97 6.34 80.49

KY 3633.86 4.54 85.03

TN 2022.09 2.53 87.55

AR 1492.24 1.86 89.42

TX 1159.93 1.45 90.86

Canada 1075.42 1.34 92.21

MI 1054.44 1.32 93.52

OK 957.94 1.2 94.72

IA 730.95 0.91 95.63

KS 674.98 0.84 96.48

WI 657.45 0.82 97.3

AL 508.47 0.63 97.93

West 418.8 0.52 98.45

LA 239.78 0.3 98.75

MS 234.55 0.29 99.05

NE 175.94 0.22 99.27

ND 122.41 0.15 99.42

SD 112.6 0.14 99.56

WY 95.55 0.12 99.68

CO 80.55 0.1 99.78

Mexico 70.06 0.09 99.87

Gulf 66.17 0.08 99.95

NM 39.82 0.05 100

75
Receptor Area = Milwaukee, WI 

Total ppb = 78545.21; Anthro ppb = 70712.36; # Values = 794 

Source Area ppb 

% 

Anthro 

Cum % 

Anthro 

WI 24770.05 35.03 35.03

IL 22554.49 31.9 66.93

IN 5035.52 7.12 74.05

MO 3751.72 5.31 79.35

IA 1932.66 2.73 82.09

East 1872.41 2.65 84.73

AR 1410.35 1.99 86.73

MI 1386.09 1.96 88.69

TX 1143.29 1.62 90.3

OK 981.63 1.39 91.69

KS 928.15 1.31 93.01

KY 754.35 1.07 94.07

TN 743.58 1.05 95.12

Canada 666.19 0.94 96.07

MS 563.26 0.8 96.86

AL 497.06 0.7 97.57

LA 482.83 0.68 98.25

West 382.37 0.54 98.79

NE 242.11 0.34 99.13

SD 133.8 0.19 99.32

ND 107.22 0.15 99.47

Gulf 101.53 0.14 99.62

WY 100.44 0.14 99.76

CO 68.77 0.1 99.86

Mexico 57.22 0.08 99.94

NM 45.28 0.06 100

76
TABLE C-4 

Receptor Area Stratification of impact level from each Region (ppb) 

77
Receptor Area = 

BPA 

# values = 

384 

 

Number of values in the ppb 

range 

Source Area 2 to 5 

5 to 

10 

10 to 

15 15 to 20 

20 to 

25 >25

Mean 

ppb 

TX 0 0 12 38 42 292 34

LA 3 40 62 59 76 134 20

East 97 118 84 47 0 0 8

BC 45 244 95 0 0 0 8

MS 151 186 28 0 0 0 6

AL 147 135 9 0 0 0 4

TN 203 36 0 0 0 0 3

Gulf 155 66 11 2 0 0 3

KY 84 20 0 0 0 0 2

AR 131 35 0 0 0 0 2

MO 58 0 0 0 0 0 1

IN 60 0 0 0 0 0 1

IL 81 0 0 0 0 0 1

WY 0 0 0 0 0 0 0

WI 0 0 0 0 0 0 0

West 0 0 0 0 0 0 0

SD 0 0 0 0 0 0 0

OK 0 0 0 0 0 0 0

NM 0 0 0 0 0 0 0

NE 0 0 0 0 0 0 0

ND 0 0 0 0 0 0 0

MN 0 0 0 0 0 0 0

MI 0 0 0 0 0 0 0

Mexico 0 0 0 0 0 0 0

KS 0 0 0 0 0 0 0

IC 0 0 0 0 0 0 0

IA 0 0 0 0 0 0 0

CO 0 0 0 0 0 0 0

Canada 18 0 0 0 0 0 0

78
Receptor Area = 

BTR 

# values = 

465 

 

Number of values in the ppb 

range 

Source Area 2 to 5 

5 to 

10 

10 to 

15 15 to 20 

20 to 

25 >25

Mean 

ppb 

LA 0 0 0 1 5 459 51

East 40 163 73 101 25 0 10

BC 9 234 192 30 0 0 10

MS 116 236 92 8 0 0 7

AL 67 205 32 19 8 0 6

Gulf 204 44 5 0 0 0 3

TX 58 15 29 3 0 0 2

TN 64 67 0 0 0 0 2

KY 78 0 0 0 0 0 1

IN 36 0 0 0 0 0 1

IL 44 0 0 0 0 0 1

AR 34 7 0 0 0 0 1

WY 0 0 0 0 0 0 0

WI 0 0 0 0 0 0 0

West 0 0 0 0 0 0 0

SD 0 0 0 0 0 0 0

OK 0 0 0 0 0 0 0

NM 0 0 0 0 0 0 0

NE 0 0 0 0 0 0 0

ND 0 0 0 0 0 0 0

MO 43 0 0 0 0 0 0

MN 0 0 0 0 0 0 0

MI 0 0 0 0 0 0 0

Mexico 0 0 0 0 0 0 0

KS 0 0 0 0 0 0 0

IC 0 0 0 0 0 0 0

IA 0 0 0 0 0 0 0

CO 0 0 0 0 0 0 0

Canada 0 0 0 0 0 0 0

79
Receptor Area = 

CHI 

# values = 

459 

 

Number of values in the ppb 

range 

Source Area 2 to 5 

5 to 

10 

10 to 

15 15 to 20 

20 to 

25 >25

Mean 

ppb 

IL 0 2 5 10 7 435 47

BC 8 171 182 95 3 0 12

WI 111 71 27 26 17 22 6

MO 48 154 92 9 0 0 6

IN 129 118 60 19 7 12 6

MI 59 64 14 21 11 0 4

IA 95 63 21 0 0 0 3

East 79 42 15 2 3 10 3

Canada 77 20 9 0 0 0 2

West 2 0 0 0 0 0 1

TX 37 17 0 0 0 0 1

TN 26 1 0 0 0 0 1

OK 70 1 0 0 0 0 1

MN 17 30 0 0 0 0 1

KY 80 31 0 0 0 0 1

KS 83 0 0 0 0 0 1

AR 48 16 0 0 0 0 1

WY 0 0 0 0 0 0 0

SD 0 0 0 0 0 0 0

NM 0 0 0 0 0 0 0

NE 8 0 0 0 0 0 0

ND 0 0 0 0 0 0 0

MS 3 1 0 0 0 0 0

Mexico 0 0 0 0 0 0 0

LA 3 0 0 0 0 0 0

IC 0 0 0 0 0 0 0

Gulf 0 0 0 0 0 0 0

CO 0 0 0 0 0 0 0

AL 24 0 0 0 0 0 0

80
Receptor Area = 

DEN # values = 70 

 

Number of values in the ppb 

range 

Source Area 2 to 5 

5 to 

10 

10 to 

15 15 to 20 

20 to 

25 >25

Mean 

ppb 

CO 0 0 0 0 4 66 44

BC 0 0 3 9 18 40 27

West 27 11 19 2 0 0 7

WY 27 7 1 0 0 0 3

NM 21 12 0 0 0 0 3

TX 30 6 0 0 0 0 2

NE 8 1 0 0 0 0 1

Mexico 0 0 0 0 0 0 1

WI 0 0 0 0 0 0 0

TN 0 0 0 0 0 0 0

SD 7 0 0 0 0 0 0

OK 1 0 0 0 0 0 0

ND 0 0 0 0 0 0 0

MS 0 0 0 0 0 0 0

MO 0 0 0 0 0 0 0

MN 0 0 0 0 0 0 0

MI 0 0 0 0 0 0 0

LA 0 0 0 0 0 0 0

KY 0 0 0 0 0 0 0

KS 4 0 0 0 0 0 0

IN 0 0 0 0 0 0 0

IL 0 0 0 0 0 0 0

IC 0 0 0 0 0 0 0

IA 0 0 0 0 0 0 0

Gulf 0 0 0 0 0 0 0

East 0 0 0 0 0 0 0

Canada 0 0 0 0 0 0 0

AR 0 0 0 0 0 0 0

AL 0 0 0 0 0 0 0

81
Receptor Area = 

DFW 

# values = 

1173 

 

Number of values in the ppb 

range 

Source Area 2 to 5 

5 to 

10 

10 to 

15 15 to 20 

20 to 

25 >25 

Mean 

ppb 

TX 0 0 0 7 31 1135 49

BC 7 446 625 95 0 0 11

LA 230 398 217 9 0 0 6

East 385 427 181 49 0 0 6

AR 282 348 140 22 5 0 5

OK 143 42 48 46 12 2 3

MS 502 282 2 0 0 0 3

AL 464 243 0 0 0 0 3

TN 560 90 0 0 0 0 2

MO 234 14 0 0 0 0 1

KY 276 0 0 0 0 0 1

KS 90 37 0 0 0 0 1

IN 71 0 0 0 0 0 1

IL 154 0 0 0 0 0 1

Canada 28 0 0 0 0 0 1

WY 0 0 0 0 0 0 0

WI 0 0 0 0 0 0 0

West 0 0 0 0 0 0 0

SD 0 0 0 0 0 0 0

NM 0 0 0 0 0 0 0

NE 1 0 0 0 0 0 0

ND 0 0 0 0 0 0 0

MN 0 0 0 0 0 0 0

MI 0 0 0 0 0 0 0

Mexico 0 0 0 0 0 0 0

IC 0 0 0 0 0 0 0

IA 0 0 0 0 0 0 0

Gulf 0 0 0 0 0 0 0

CO 0 0 0 0 0 0 0

82
Receptor Area = 

ELP # values = 0 

 

Number of values in the ppb 

range 

Source Area 2 to 5 

5 to 

10 

10 to 

15 15 to 20 

20 to 

25 >25

Mean 

ppb 

WY NA NA NA NA NA NA NA 

WI NA NA NA NA NA NA NA 

West NA NA NA NA NA NA NA 

TX NA NA NA NA NA NA NA 

TN NA NA NA NA NA NA NA 

SD NA NA NA NA NA NA NA 

OK NA NA NA NA NA NA NA 

NM NA NA NA NA NA NA NA 

NE NA NA NA NA NA NA NA 

ND NA NA NA NA NA NA NA 

MS NA NA NA NA NA NA NA 

MO NA NA NA NA NA NA NA 

MN NA NA NA NA NA NA NA 

MI NA NA NA NA NA NA NA 

Mexico NA NA NA NA NA NA NA 

LA NA NA NA NA NA NA NA 

KY NA NA NA NA NA NA NA 

KS NA NA NA NA NA NA NA 

IN NA NA NA NA NA NA NA 

IL NA NA NA NA NA NA NA 

IC NA NA NA NA NA NA NA 

IA NA NA NA NA NA NA NA 

Gulf NA NA NA NA NA NA NA 

East NA NA NA NA NA NA NA 

CO NA NA NA NA NA NA NA 

Canada NA NA NA NA NA NA NA 

BC NA NA NA NA NA NA NA 

AR NA NA NA NA NA NA NA 

AL NA NA NA NA NA NA NA 

83
Receptor Area = 

HGB 

# values = 

1047 

 

Number of values in the ppb 

range 

Source Area 2 to 5 

5 to 

10 

10 to 

15 15 to 20 

20 to 

25 >25

Mean 

ppb 

TX 0 1 2 12 42 990 46

LA 40 258 400 278 57 9 13

BC 34 716 282 15 0 0 9

East 309 280 256 104 0 0 8

MS 626 327 17 0 0 0 5

TN 556 87 0 0 0 0 3

Gulf 315 129 30 15 3 0 3

AR 432 192 0 0 0 0 3

AL 387 241 0 0 0 0 3

KY 465 18 0 0 0 0 2

MO 237 0 0 0 0 0 1

IN 142 0 0 0 0 0 1

IL 235 0 0 0 0 0 1

Canada 43 0 0 0 0 0 1

WY 0 0 0 0 0 0 0

WI 0 0 0 0 0 0 0

West 0 0 0 0 0 0 0

SD 0 0 0 0 0 0 0

OK 1 0 0 0 0 0 0

NM 0 0 0 0 0 0 0

NE 0 0 0 0 0 0 0

ND 0 0 0 0 0 0 0

MN 0 0 0 0 0 0 0

MI 0 0 0 0 0 0 0

Mexico 0 0 0 0 0 0 0

KS 0 0 0 0 0 0 0

IC 0 0 0 0 0 0 0

IA 0 0 0 0 0 0 0

CO 0 0 0 0 0 0 0

84
Receptor Area = KC 

# values = 

216 

 

Number of values in the ppb 

range 

Source Area 2 to 5 

5 to 

10 

10 to 

15 15 to 20 

20 to 

25 >25

Mean 

ppb 

KS 0 0 0 2 23 191 32

MO 24 39 37 42 56 14 15

BC 0 20 132 64 0 0 13

OK 30 61 33 18 0 0 6

IL 61 36 21 0 0 0 4

AR 53 79 8 0 0 0 4

TX 33 3 24 6 0 0 3

East 115 14 9 4 0 0 3

TN 36 9 0 0 0 0 2

KY 81 0 0 0 0 0 2

IN 51 33 0 0 0 0 2

West 0 0 0 0 0 0 1

MS 36 0 0 0 0 0 1

LA 14 0 0 0 0 0 1

Canada 15 0 0 0 0 0 1

AL 22 0 0 0 0 0 1

WY 0 0 0 0 0 0 0

WI 0 0 0 0 0 0 0

SD 0 0 0 0 0 0 0

NM 0 0 0 0 0 0 0

NE 0 0 0 0 0 0 0

ND 0 0 0 0 0 0 0

MN 0 0 0 0 0 0 0

MI 0 0 0 0 0 0 0

Mexico 0 0 0 0 0 0 0

IC 0 0 0 0 0 0 0

IA 5 0 0 0 0 0 0

Gulf 0 0 0 0 0 0 0

CO 0 0 0 0 0 0 0

85
Receptor Area = 

MEM 

# values = 

781 

 

Number of values in the ppb 

range 

Source Area 2 to 5 

5 to 

10 

10 to 

15 15 to 20 

20 to 

25 >25

Mean 

ppb 

TN 8 37 41 85 80 530 32

AR 78 157 163 95 66 122 14

East 144 211 147 58 52 68 10

BC 8 467 259 43 4 0 10

MS 239 127 87 48 14 9 6

KY 145 238 165 15 0 0 6

AL 204 194 60 4 0 0 4

MO 262 123 14 2 0 0 3

IN 216 105 43 0 0 0 3

IL 228 72 46 3 0 0 3

TX 53 34 13 0 0 0 1

LA 103 45 7 0 0 0 1

Canada 69 0 0 0 0 0 1

WY 0 0 0 0 0 0 0

WI 6 0 0 0 0 0 0

West 0 0 0 0 0 0 0

SD 0 0 0 0 0 0 0

OK 12 0 0 0 0 0 0

NM 0 0 0 0 0 0 0

NE 0 0 0 0 0 0 0

ND 0 0 0 0 0 0 0

MN 0 0 0 0 0 0 0

MI 25 0 0 0 0 0 0

Mexico 0 0 0 0 0 0 0

KS 10 0 0 0 0 0 0

IC 0 0 0 0 0 0 0

IA 7 0 0 0 0 0 0

Gulf 0 0 0 0 0 0 0

CO 0 0 0 0 0 0 0

86
Receptor Area = 

OKC 

# values = 

142 

 

Number of values in the ppb 

range 

Source Area 2 to 5 

5 to 

10 

10 to 

15 15 to 20 

20 to 

25 >25

Mean 

ppb 

OK 0 0 0 2 11 129 37

TX 10 15 21 34 20 17 14

BC 0 55 75 12 0 0 12

East 54 63 8 0 0 0 5

AR 38 50 19 0 0 0 5

LA 78 17 0 0 0 0 3

TN 52 3 0 0 0 0 2

MS 65 18 0 0 0 0 2

AL 62 3 0 0 0 0 2

West 0 0 0 0 0 0 1

MO 19 1 5 2 0 0 1

KY 19 0 0 0 0 0 1

KS 13 10 1 0 0 0 1

IN 14 0 0 0 0 0 1

IL 18 3 0 0 0 0 1

Canada 0 0 0 0 0 0 1

WY 0 0 0 0 0 0 0

WI 0 0 0 0 0 0 0

SD 0 0 0 0 0 0 0

NM 0 0 0 0 0 0 0

NE 5 0 0 0 0 0 0

ND 0 0 0 0 0 0 0

MN 0 0 0 0 0 0 0

MI 0 0 0 0 0 0 0

Mexico 0 0 0 0 0 0 0

IC 0 0 0 0 0 0 0

IA 0 0 0 0 0 0 0

Gulf 0 0 0 0 0 0 0

CO 0 0 0 0 0 0 0

87
Receptor Area = 

PHX # values = 0 

 

Number of values in the ppb 

range 

Source Area 2 to 5 

5 to 

10 

10 to 

15 15 to 20 

20 to 

25 >25

Mean 

ppb 

WY NA NA NA NA NA NA NA 

WI NA NA NA NA NA NA NA 

West NA NA NA NA NA NA NA 

TX NA NA NA NA NA NA NA 

TN NA NA NA NA NA NA NA 

SD NA NA NA NA NA NA NA 

OK NA NA NA NA NA NA NA 

NM NA NA NA NA NA NA NA 

NE NA NA NA NA NA NA NA 

ND NA NA NA NA NA NA NA 

MS NA NA NA NA NA NA NA 

MO NA NA NA NA NA NA NA 

MN NA NA NA NA NA NA NA 

MI NA NA NA NA NA NA NA 

Mexico NA NA NA NA NA NA NA 

LA NA NA NA NA NA NA NA 

KY NA NA NA NA NA NA NA 

KS NA NA NA NA NA NA NA 

IN NA NA NA NA NA NA NA 

IL NA NA NA NA NA NA NA 

IC NA NA NA NA NA NA NA 

IA NA NA NA NA NA NA NA 

Gulf NA NA NA NA NA NA NA 

East NA NA NA NA NA NA NA 

CO NA NA NA NA NA NA NA 

Canada NA NA NA NA NA NA NA 

BC NA NA NA NA NA NA NA 

AR NA NA NA NA NA NA NA 

AL NA NA NA NA NA NA NA 

88
Receptor Area = 

SAN 

# values = 

110 

 

Number of values in the ppb 

range 

Source Area 2 to 5 

5 to 

10 

10 to 

15 15 to 20 

20 to 

25 >25

Mean 

ppb 

TX 0 0 0 0 0 110 43

BC 0 34 76 0 0 0 11

LA 27 58 12 13 0 0 8

East 12 67 31 0 0 0 8

MS 73 21 0 0 0 0 4

TN 91 0 0 0 0 0 3

AR 49 16 0 0 0 0 3

AL 45 20 0 0 0 0 3

KY 58 0 0 0 0 0 2

OK 14 0 0 0 0 0 1

MO 0 0 0 0 0 0 1

IN 2 0 0 0 0 0 1

IL 0 0 0 0 0 0 1

Gulf 24 0 0 0 0 0 1

Canada 0 0 0 0 0 0 1

WY 0 0 0 0 0 0 0

WI 0 0 0 0 0 0 0

West 0 0 0 0 0 0 0

SD 0 0 0 0 0 0 0

NM 0 0 0 0 0 0 0

NE 0 0 0 0 0 0 0

ND 0 0 0 0 0 0 0

MN 0 0 0 0 0 0 0

MI 0 0 0 0 0 0 0

Mexico 0 0 0 0 0 0 0

KS 0 0 0 0 0 0 0

IC 0 0 0 0 0 0 0

IA 0 0 0 0 0 0 0

CO 0 0 0 0 0 0 0

89
Receptor Area = 

STL 

# values = 

931 

 

Number of values in the ppb 

range 

Source Area 2 to 5 

5 to 

10 

10 to 

15 15 to 20 

20 to 

25 >25

Mean 

ppb 

MO 16 31 72 160 97 551 30

IL 32 44 63 144 153 494 28

BC 0 332 505 90 4 0 11

IN 153 276 195 2 0 0 5

East 136 141 132 57 22 8 5

KY 242 255 53 9 0 0 4

TN 103 141 20 0 0 0 2

AR 111 59 25 3 0 0 2

WI 79 14 0 0 0 0 1

TX 101 55 5 0 0 0 1

OK 101 52 5 0 0 0 1

MI 185 28 0 0 0 0 1

KS 88 16 0 0 0 0 1

IA 73 27 5 0 0 0 1

Canada 178 24 2 0 0 0 1

AL 64 13 0 0 0 0 1

WY 0 0 0 0 0 0 0

West 20 0 0 0 0 0 0

SD 0 0 0 0 0 0 0

NM 0 0 0 0 0 0 0

NE 0 0 0 0 0 0 0

ND 0 0 0 0 0 0 0

MS 1 0 0 0 0 0 0

MN 19 26 0 0 0 0 0

Mexico 0 0 0 0 0 0 0

LA 3 0 0 0 0 0 0

IC 0 0 0 0 0 0 0

Gulf 0 0 0 0 0 0 0

CO 0 0 0 0 0 0 0

90
Receptor Area = WI 

# values = 

794 

 

Number of values in the ppb 

range 

Source Area 2 to 5 

5 to 

10 

10 to 

15 15 to 20 

20 to 

25 >25

Mean 

ppb 

WI 31 71 62 96 90 442 31

IL 15 29 36 74 127 502 28

BC 20 495 265 14 0 0 9

IN 206 175 121 41 24 7 6

MO 182 363 33 0 0 0 5

MI 149 54 10 0 0 0 2

IA 218 101 15 0 0 0 2

East 57 146 16 3 8 0 2

AR 181 88 0 0 0 0 2

TX 230 36 0 0 0 0 1

TN 74 37 0 0 0 0 1

OK 225 0 0 0 0 0 1

MS 45 45 0 0 0 0 1

MN 50 27 9 1 0 0 1

LA 65 16 0 0 0 0 1

KY 101 28 0 0 0 0 1

KS 148 0 0 0 0 0 1

Canada 60 4 0 0 0 0 1

AL 50 27 0 0 0 0 1

WY 0 0 0 0 0 0 0

West 13 0 0 0 0 0 0

SD 0 0 0 0 0 0 0

NM 0 0 0 0 0 0 0

NE 20 0 0 0 0 0 0

ND 8 0 0 0 0 0 0

Mexico 0 0 0 0 0 0 0

IC 0 0 0 0 0 0 0

Gulf 0 0 0 0 0 0 0

CO 0 0 0 0 0 0 0

91
Modeling Data for New Mexico 

From EPA Regions 6 and 7 for Ozone
-- 

-- 

Source Area 

-~ 

----- 

Receptor Area = ME! - -- - --- 

Receptor Area = STL 0.4 

Receptor Area = PHX I 0 0 
Source Region = NM -- -. - - 

Receptor Area % total .- 

DEN 14 

OKC 

DFW 

--pp.pMEM 

..~ 

BTR - 

HGB -. - - -- 

57 

BPA 

-- 

0.1 7 

SAN 0. 1 

PHX 

ELP - -- . - 

- 

KC ~ - - 

1 

STL p~ . ----- ~ - 

2 

CHI ~ - 

.- 0.2 .- --- - - - - 1 

WI 0.2 01 0.2, 0 
NM 0 

Receptor Area = BTR -- #values = 465 - 

NM 

. . 

-.- 

3 / 7 

___/..- 

-- ,-_ ..~- ~ 

NM 

.- - ..- . - . 

I 

- -. - 

Receptor ... Area = ELP # values = 0 . .- ~ 

NM -- 

Receptor Area = ~T#-llb47 

NM ---. . . . . - 0 

NM ~- 

. -- -- . - . . . -- . . - 

Receptor Area = OKC # values = 142 . .. - .- 

NM - 1 

- --PA - - -P-- 

Receptor Area = PHX # values -- = 0 

NM -- -. 

. -- - ... - ~ . -- 

Receptor Area = SAN I# values = 1 10 . ~~ - 

NM 0 0 0 0 
I 

--- - - -- 

-- - . - - -. - 

Source Area 10t~15to20 - .- -20to25 >251Meanppb 

# values = 384 0 ~ 0 0 o_-lp-- 0 

Receptor Area = BTR - 0 0 ~ 0 O/ - T--- 0.-.. -- 

Receptor Area = DEN 2 1 1 12 0 0 C- - -~ 0 +- - RZ@EA~~~W--- 0 - 0 --. - . .- 

Receptor Area = E~P - 

Receptor Area 

- - 

= HGB - - 

Receptor Area = MEM ---+ 

Receptor Area = OKC 

Receptor Area = PHX 

# values = 1 173 -- - ~ ~- 0 - -- 0 0 (I / 0 

# values = 0 

# values = 1047 - .- NA -- . - - - 0 

Receptor Area = SAN 0 

NA 

.- .- 0 

0 

- 

0 

NA 

0 -- 

0 

0 

NA 

# values =-781 1 0 

0 

NA NA .- -. .+. . 

Oi 0 

01 - 0 

0: 0 

# values = 110 

. # . .-. values -- = 142 

# values = 0 

0 i 0 

NA 

0 

NA . 1 NA 

01 0 

0 

NA NA 

0 - - 

. NA . --. .- . 

0 

0 - 

0 - NA - 

-- 0 

NA 

--~ 

0 
Receptor Area = BPA [ -- 

Total ppb = 36575.58; Anthro ppb = 33348.62; #Values = 384 -. .. 1 

Source Area 

NM .. . 

Receptor Area = BTR 

PP~ - 18.44 

Total ppb = 44132.92; Anthro ppb = 39470.06; #Values = 465 

Source Area p--C---l%Anthro PP~ Cum % Anthro 

NM -_ 

' 20.23 

- 

~eceptor Area = DEN 

Total ppb = 623326; Anthro ppb = 4304.93; #Values = 70 

- 

Source Area -- 

NM -- .- 90.25 

- . 

Receptor Area = 

DFW-'--- 

% Anthro 

- 0.06 

Total ppb = 112122.81; Anthro ppb = 99339.01; #Values = 1173 

Source Area -- 1 

Cum --- % Anthro 

99.95 

NM 71.9 0.07' 100 

- -- 

-. 

-- 

Receptor Area = ELP 

~ppb~nthro -- ppb = NA; # Values - = NA 

Source Area -- -- 

NM -- .- -- .- 

Receptor Area = HGB -- 

Total ppb = 103545.56; Anthro ppb = 94208.17; # Values = 1047 

Source Area 

NM --. 99.83 

Receptor Area = MEM -- 

Total ppb = 74754.76; Anthro ppb = 67083.18; #values = 781 

Source Area 

NM 100 

- 

~ece~tor~rea = OKC 

Total ppb =12751.49; Anthro ppb = 

--- 

Source Area 

-- 

NM 99.89 

-- 

Receptor Area = PHX -- 

Total ppb = NA; Anthro ppb = NA; #Values = NA 

Source Area -- 

NM 

-- 

-- 

~ece$or Area = SAN ~ 

Total -- ppb = 10070.%; Anthro ppb = 8877.24; #Values = 110 -- Source Area 

NM 99.68 

- 

PP~ % -- Anthro 1Cum46 Anthro 
- - -- - 

Source Reg~on = NM . 

Receptor Area 

SAN - 

- - 

0 0 0 0 

PHX 

-- 0 0 0 0 0 

OKC 0 - -O 0 

!!EM 0 0 0 0 

--- 

HGB 0 0 

ELP - 0 0 0 0 0 

DFW - o o 00 0 o - 

0 

DEN _- -0 _ - - -- 0 0 -. 0 1 12 1714 0-0 c! 0 0 0 

BTR ._ 0 0 0 0' --A__ 0 Lpp 0 0 0- --- OOO-- 0. -- o~--- 0 

BPA 0 0 0 O! 0; 0 0 0 0, 0 0 0 0, 0 
-. 1 -. 

-- - 

-- -. - 

--.-L t 

Receptor Area 

- 

DEN 

DFW 1173 

OKC .. - 

HGB 

MEM -- . . -. - - 

BTR 

-~. 465 -. 

BPA 384 -. -

SAN -- -. . - -. - --. 110 

PHX ~ .~ # values = 0 ...~ 0 0 -0 .~~ ~ 

ELP # values = 0 0 0 0 0 0 
.. .. . - -- . . - 

El ~ 

~ 

. 

n . - -. - -7---- -~ 

Canada- - - + . . - -- 

MI 

E _c~ -. 

ML ~ ~ . . . 

. -. - -- - 

NM 0.1 0 92 8/27/2002 4 0.1 0 92 8/28/2002 7 

IC I ~ 

--.- ip~- t 

EaS'.__.. . . 

.- -. - 

!L - .~ -_ 

L p~~ 

!!!L -.___._- 

West 


Receptor Area = MEM 

H~ghest Average Contnbution Second H~ghest Average Contnbut~on 

0 0 0 none 0 0 0 0 none 

d-i-. , L 

1 Highest Average Contribution - 

Source Area % total ppb 1 total 

-~ . - ~- ~ 

~ ~ 

~ -- 

~~- - -~-J 

- -- - - . 

ReceptorArea. - ..

ME- - - 

OKC 

- . -. - 

. - 

.. ~~ 

HGB - 

SAN 

-- -- ---. . 

- 

BPA . - 

PHX-~ 

ELP -. 

+- -~ ~-~, - 

Receptor Area 

DEN - 

MEM. 

DFW ~~ 

BTR 5 

. 

Flec?a-.~---- 

- 

-- .. --- 

-~ 

DEN 

- 

PHX -. C 

EL!--- - . 

Receptor Area 

MEL -._____---... - --- 

HGR 57 1 (17 
S AN 

DEN 

-~ ~- 

PHX-- 

4 

~%rce Region = MI 

- .~ 

Receptor Area 
BPA ~ 

EL.---- 

DFW 

BTR 

-- - . - - - 

Source Region = MN 

~. 

-. ~~ -. 

DFW . 

1 --- 

~ - -- - - ~ - - .. 

- 

ELP ~~ . p- 

. - 

~ ~~.. - -- .- - 

-. ~ 

- -- -~ ~. 

PHX ~- 

ELL--. . .. 

.. .~ I 

- --- 

- - 

HGB 

-. - -- ~ - ~~- - 

5.1 1 _ 5 90 91612002 - - ~ - 9 

DEN I 0.3 0 87 8/7/2002 1 
Receptor Area __. 

PHX 

ELP 0 

86 9/4/2002 1 

I - - -. -- 

Source Region = TX 

Receptor Area ~ ~~-~ 

BTR - 

2 

~ ~ - 

0 

DFW 

*B--- -- -- -- 

~ 

!'KC ~ 

BPA 

-- -~ 

Receptor Area 

- -. 

- - - - - - - - - -p 

2 

I . . -- - 

- 

LA -- 40 ~ ~ 

East ~~ 18 

~ ~ -~ 

- ~ 

Gulf 

- -- - -- - .- ~-~ ~ 

17 

TN 

AR 9 

KT ~ 

4 

KS 

. - 

I 

WI 1 

- - 

- 

WY 

SD 0 

~~ O! 

Mexico 0 ~ 

IC 0 

CO .- 

I 

c ~- 

Receptor Area = BTR -~ -~- ~ ~ 

~~ppb Contribution . . . . -- -~. - 

Source Area 1 Minimum 
LA 361 50 

~... 

6 -. ~OJ- 

- . . - 

0 i 5 13 

TX - . - - 17 

TN 

-. 

~ 

4 

-- 

MO 3 

West - ~--~ 

2 

~ 

Canada 

. . ~~ - ~ 

- 

OK ~-~.. - - ----- 

MN 

~- . - - MI ~. 1 - 

KS- ~ 1 

NE ~ . 0 

ND ~p ~~ 

Mexico 

- . - .- 

IC ~ 

CO ~ 

. -- 

Source Area -~ - - - -- - . . .~ 

CO 

-- . -- -.. 

BC 

- .~ 

West . - ~ 

- -.- 

WY 
-. ~ - . ~~~ 

.~ - 

~ ~ 

Gulf 

Canada 
. 

Canada 

.- 

. . -- .. r- . 

West 

, 2 

I A I 0 -- -. 

Gulf 

I ~p 

NE 

Mexico 2 

WI p~ -p------- 

, 

1 

1 SD 1 

I.? -- 

-- 

1 I-- , C 

NM 1 0' C 

~ 

~. ~ 

WY 

WI 

West 

- -~ 

SD i NA NA +---- 

+~ ~ 

OK - - ~- ~~---~- I:: NA - -- - ?. 

NM I NA 
I:: 

- .- 

Mexico 

-- - - 

LA 1 NA NA i NA - 

KY 

KS ~ 

~ -- 

'- 

IN -- . 

I L ~-.- 

- 

. ..~ 

CO I-. - ~ 

Canada 1 ~- 

BC 

-. I--I *= -- 

1047 & 

Receptor - - Area - ==I - - - I- -- - 

loob Contribution - +-! I -- - 

--- -- - - 3t 6j-- sr - ' - -71 -_ 

East 0r -- 2f-67 8 I 151 

- 

West - - - -- -- o Io -- -4 01 - - - -T -- ----I/:- - 2 

OK I 0 0 0 0 I 11 2 
-- 

- 

I A - - .- 

WY - 

SD - 

NM 

--- 

NE . ~ ~ ~- 

ND - . ~- 

Mexico - 

IC - 

..~~ 0 

CO 

-.___-- - 

0 I I L -- -~--L ~ -- 

Receptor Area = - . ~ 4. values = 78, 

. .~-~ 

Source Area . . - -T~ 

TN -- . 

AR - &-I- t- - East 10' T~ 361 

BC 101-141 -- 23 

-. + 

TX 

1 Canada , 

-- L ol.. -. or-.^^- 

West 0; 0 --.,- . - 

Gulf 0 1 0 0 / 0 1 
MN 

-- 2 

WY -. 

SD ~- 

NE ~ -. - --p~-- - 

1 

0 

~ .- - 

Mexico . . -- - -. - --p-P ~ ~- 

0 

CO - 

- - . -- - .. 

. # - values .- = ~ 142 

...p-. ~ .-

source Area - -.p-. 

OK 50 

. ~ 

. 

East 

-- -- 13 

MO ~- -- 

3 1 12 

~- 

I L 6 

KY 

-p.- -- -- 

IN 4 

. - . -- - -- - - 

I A - 2 

NE 3 

~~~ 

1 

SD 

- - ~ ~- ~- -- 

NM - - 

1 

ND . 

MN 
~~ - 

0 1 .. 

. 

. -- - .~ -- . 

Rece~tor Area = PHX i 

- - . .- 1 Source Area 

ppb Contribution 

Minimum 

I 

-- -- I_ - 

90th Pctl I Maxm 

- - 

KS 

-- 

IN .- 

I L .~ -"- 

Gulf ~ 

East I NA 
AL 

Source -- Area 

TX -- .- 63 

BC - ~ . 

LA 18 

--- - 

7 

~ 

TN 4 

KY 3 

5 

~ 

MO -~ 

IN ~~- -- 

I L 

Canada 2 

~ 1 

MI ~ 

KS - 

- 

WY .- 

WI ~ 

L -- 

0 

SD 0 

NM 0 

NE 

Mexico ~ ~ 

IC - . -. 0 

I A 

-~- - - 

0 

-- 

CO 0 
~~ 

-- 

Source Area 

TX 

- ~ 

BC -~ 

East 

AL I - - - . -- - 

Gulf - ~ ~ .- 

TN -- - 203 

KY 1.603 

IL - -~ 

IN - 

~ - - - . .-- . 

0.954 

KS 

I A -- - -- 

MI 

- 

OK 

NE 

1- ~ ~ . - .-- .- 

CO . ~ 

ND -- 

SD ~~p - 

NM ~ 

~ - , , - . - - - - 

i ~ ~ - ~ 

Source Area 2 to 5 t20 to 25 >25 1 ~ean ppb 
-- - 

AL 671205T. 321 

Gulf t 204 / 45 I---- 

~~ - 

KY 

IL 

~- .- .. 

IN 

~.~-. - ~-- 

MO --- 

West ~- ~ 

Canada 

- ~ 

OK ~ 1~ p~ -. - 

I A I 0 1 0 I 

- -- .-- . - 27 ,~..? .--l~g; - - 1-. -- 

West ~- I ~- 

~~ - -- 

WY 27 7 1 IT 
~. 

Mexico 

- 

KS - -- -- ~ ~p~ 

SD 

- , -- --- - -- - -- -- 

East ---+ -- - - -- - -- 0' 0 01 0.177q 

Canada 0 1 7 7 0.1 4022 

, - . . -- . -. - - -- I -- 

I - 01 

KY +. -- - - 0 

Gulf . -- ~ ~- - 

WI 

~ ~ 

- .. - -- -- . ~ 

Source Area 

-. . - --- . - - 

12 to 5 

TX 

- - --- -- 

BC . 

East 

LA ~ 

AR 
Source Area 
MN P-p-.---P NA . -- .- 

MI 

Mexico - 

LA .. -- 

KY 

--. 

KS p~ ~ ~ 

IN 

---- ~ 

I L 

I. IC - 

I A ~ 

~. 

Gulf 

East . 

CO ~ ~ 

~ ~~ - 

. - - - -- -~. - - . 

- 

----..-P-. 

~. -- 

~. 

East ~ -. ~ 

MS ! 

AL - 

- . . . 

Gulf 

~ ~ - -. 

TN - 

-. I .~ 

KY 

-. . . ~~ 

I L 

~ 

~ 

..~ 

KS 
-1- ~ + ~ 

Mexico 01 0.04595 

I C -- .- - 0 0.00081 - 

+ 

I ' i i - -- 4 -- .--L~ - --

Receptor . - Area = MEM 

Source - -p.-. Area 

{Number 

I 

~ 

of values in the DD~ ranae +~-iTN 

AR 1 95 -- - --A 

East 144 TIC 147 

BC 8,467 

Canada 

- - -. - t 69 ~ 

MI 

I--- - - 0: -- 0L 0+02%~7 ~ - 

o 0i 7 0.23451 p- - - 

Gulf I 0,21403 
MN 

-- - - ~- .- 0 I 

NE -. ~ 

WY ~ 

-. --.- 

- 

CO .- ~ --.. 

ND 

. -~ L ~- ~ 

SD - -. -~ . 

Mexico 

NM 

~ . - 

-~ - 

Source Area 

OK 

.-- 

TX 

MS ~ 

- . 

AL 

~ . . - -- - . ~ 

MO 01 01 1.48689 

I L 

IN 

-~~ . .- -- ~- 

Canada ~ 

C-~ 

MI .. -. 

NE 

I A -- 

Gulf 

- -- I_~- -- . 

MN - 

WY - ~ 

Mexico 
~ 

~~~ ~ 

Gulf . ~~ ~. 

East 

-. . - - -- - 

CO 

Canada 

. ~~ 

BC 
I AL i NA INA NA NA I NA iNA INA 

. -- ..--a ~ 

MO ~ ~~ 

~ . 

IL 

OK 

-- --- .- 

Canada 

.- ~ ~ 

KS 

-- - -- .- 

MI -- 

CO 

.... - - .- 

WY ~ 

.. . - . . - 

I A 

-~ 

NM . - - -- -- . 

Mexico 

WI -- . ~--~ 

MN 

- -. . ... .- - -- - . -- . - 

SD 

- -- .. -- .~~~ ~ 

ND ~ ~ 

. -- 

IC 
Receptor Area = BPA 

Total ppb = 36575.58; Anthro ppb = 33348.62; # Values = 384 

Source Area 

TX 

LA 

East 

MS 

AL 

Gulf 

TN 

AR 

KY 

IL 

IN 

MO 

Canada 

West 

KS 

I A 

MI 

OK 

WI 

NE 

CO 

WY 

ND 

SD 

NM 

Mexico 

Receptor Area = BTR 

Total ppb = 44132.92; Anthro ppb = 39470.06; #Values = 465 

Source Area 

LA 

East 

MS 

AL 

PP~ % Anthro Cum % Anthro 

13070.59 39.19 39.19 

7862.66 23.58 62.77 

2991.15 8.97 71.74 

2160.52 6.48 78.22 

1589.91 4.77 82.99 

1234.22 3.7 86.69 

996.71 2.99 89.68 

805.47 2.42 92.09 

615.55 1.85 93.94 

416.54 1.25 95.19 

383.99 1.15 96.34 

366.34 1.1 97.44 

185.65 0.56 97.99 

127.87 0.38 98.38 

107.78 0.32 98.7 

73 0.22 98.92 

68.03 0.2 99.12 

58.38 0.18 99.3 

57.59 0.17 99.47 

37.5 0.1 1 99.58 

32.68 0.1 99.68 

30.84 0.09 99.77 

20.48 0.06 99.83 

18.94 0.06 99.89 

18.44 0.06 99.95 

17.8 0.05 100 

PPb % Anthro Cum % Anthro 

23617.61 59.84 59.84 

4527.91 11.47 71.31 

3420.97 8.67 79.98 

2723.1 6.9 86.87 
Gulf 

TN 

TX 

KY 

AR 

IL 

IN 

MO 

West 

Canada 

KS 

OK 

I A 

WI 

MI 

WY 

CO 

NE 

SD 

NM 

ND 

Mexico 

Receptor Area = DEN 

Total ppb = 6233.26; Anthro ppb = 4304.93; #Values = 70 

Source Area 

CO 

West 

WY 

NM 

TX 

NE 

Mexico 

KS 

SD 

OK 

East 

PP~ % Anthro Cum % Anthro 

3071.13 71.34 71.34 

458.67 10.65 81.99 

179.41 4.17 86.16 

175.88 4.09 90.25 

170.53 3.96 94.21 

58.24 1.35 95.56 

49.97 1.16 96.72 

30.99 0.72 97.44 

26.7 0.62 98.06 

23.03 0.53 98.6 

12.44 0.29 98.89 
Canada 

MO 

ND 

LA 

AR 

I L 

AL 

MS 

I A 

TN 

IN 

KY 

Gulf 

WI 

MI 

Receptor Area = DFW 

Total ppb = 112122.81; Anthro ppb = 99339.01; # Values = 1173 

Source Area 

TX 

East 

LA 

AR 

MS 

AL 

OK 

TN 

KY 

MO 

IL 

IN 

KS 

Canada 

West 

Gulf 

I A 

MI 

PP~ '41 Anthro Cum % Anthro 

57753.24 58.14 58.14 

7574.47 7.62 65.76 

6707.36 6.75 72.51 

5979.21 6.02 78.53 

3928.71 3.95 82.49 

3271.39 3.29 85.78 

2965.01 2.98 88.77 

2806.15 2.82 91.59 

1412.48 1.42 93.01 

1284.75 1.29 94.31 

995.1 1 95.31 

867.84 0.87 96.18 

806.65 0.81 96.99 

632.88 0.64 97.63 

513.98 0.52 98.15 

354.55 0.36 98.5 

263.08 0.26 98.77 

222.5 0.22 98.99 
NE 

WI 

Mexico 

WY 

CO 

SD 

ND 

NM 

Receptor Area = ELP 

Total ppb = NA; Anthro ppb = NA; #Values = NA 

Source Area 

WY 

WI 

West 

TX 

TN 

SD 

OK 

NM 

NE 

ND 

MS 

MO 

MI 

Mexico 

LA 

KY 

KS 

IN 

I L 

I A 

Gulf 

East 

CO 

Canada 

AR 

% Anthro Cum % Anthro 

NA N A 

NA NA 

N A N A 

NA N A 

NA NA 

N A NA 

NA N A 

NA N A 

NA N A 

N A NA 

NA NA 

NA NA 

NA N A 

NA N A 

NA NA 

NA NA 

N A N A 

N A N A 

NA NA 

NA NA 

N A N A 

NA NA 

NA NA 

N A N A 

NA NA 
Receptor Area = HGB 

Total ppb = 103545.56; Anthro ppb = 94208.17; # Values = 1047 

Source Area 

TX 

LA 

East 

MS 

AL 

AR 

Gulf 

TN 

KY 

IL 

IN 

MO 

Canada 

West 

KS 

OK 

MI 

I A 

WI 

CO 

NE 

WY 

NM 

ND 

SD 

Mexico 

Receptor Area = MEM 

Total ppb = 74754.76; Anthro ppb = 67083.18; #Values = 781 

Source Area 

TN 

AR 

PP~ % Anthro Cum % Anthro 

47955.97 50.9 50.9 

13395.93 14.22 65.12 

8010.07 8.5 73.63 

4736.11 5.03 78.65 

3343.35 3.55 82.2 

3103.48 3.29 85.5 

3022.44 3.21 88.7 

2676.29 2.84 91.55 

1864.89 1.98 93.53 

1208.33 1.28 94.81 

1168.51 1.24 96.05 

1148.38 1.22 97.27 

582.7 0.62 97.89 

401.16 0.43 98.31 

298.01 0.32 98.63 

240.3 0.26 98.88 

199.46 0.21 99.09 

180.89 0.19 99.29 

141.49 0.15 99.44 

108.99 0.12 99.55 

98.89 0.1 99.66 

96.45 0.1 99.76 

62.03 0.07 99.83 

61.15 0.06 99.89 

54.77 0.06 99.95 

48.1 1 0.05 100 

PP~ % Anthro Cum % Anthro 

24680.2 36.79 36.79 

10950.29 16.32 53.1 1 
East 

KY 

MS 

AL 

MO 

IN 

I L 

LA 

TX 

Canada 

MI 

West 

OK 

KS 

WI 

I A 

Gulf 

NE 

WY 

CO 

ND 

SD 

Mexico 

NM 

Receptor Area = OKC 

Total ppb = 12751.49; Anthro ppb = 11 095.86; # Values = 142 

Source Area 

OK 

TX 

AR 

East 

LA 

MS 

AL 

TN 

MO 

PP~ % Anthro Cum % Anthro 

5217.73 47.02 47.02 

1992.68 17.96 64.98 

716.97 6.46 71.44 

707.27 6.37 77.82 

41 3.86 3.73 81.55 

339.24 3.06 84.61 

276.57 2.49 87.1 

264.75 2.39 89.48 

211.14 1.9 91.39 
KS 

KY 

I L 

IN 

Canada 

West 

MI 

NE 

I A 

Gulf 

WI 

WY 

Mexico 

SD 

CO 

NM 

ND 

Receptor Area = PHX 

Total ppb = NA; Anthro ppb = NA; #Values = NA 

Source Area 

WY 

WI 

West 

TX 

TN 

SD 

OK 

NM 

NE 

ND 

MS 

MO 

MI 

Mexico 

LA 

KY 

% Anthro Cum % Anthro 

NA NA 

NA NA 

N A NA 

NA NA 

NA NA 

N A NA 

NA NA 

NA NA 

NA NA 

NA NA 

NA NA 

NA NA 

NA NA 

NA NA 

NA NA 

NA NA 
KS 

IN 

IL 

I A 

Gulf 

East 

CO 

Canada 

AR 

AL 

Receptor Area = SAN 

Total ppb = 10070.39; Anthro ppb = 8877.24; #Values = 110 

Source Area 

TX 

East 

LA 

MS 

AL 

TN 

AR 

KY 

Gulf 

IN 

MO 

I L 

OK 

Canada 

West 

KS 

MI 

CO 

WY 

NE 

I A 

NM 

Mexico 

PP~ % Anthro Cum % Anthro 

4734.79 53.34 53.34 

914.96 10.31 63.64 

872.62 9.83 73.47 

387.03 4.36 77.83 

347.69 3.92 81.75 

322.8 3.64 85.39 

319.81 3.6 88.99 

213.13 2.4 91.39 

122.39 1.38 92.77 

111.34 1.25 94.02 

104.39 1.18 95.2 

103.27 1.16 96.36 

76.68 0.86 97.22 

59.79 0.67 97.9 

46.43 0.52 98.42 

36.13 0.41 98.83 

20.54 0.23 99.06 

14.45 0.16 99.22 

1 1.29 0.13 99.35 

10.29 0.12 99.47 

9.58 0.1 1 99.57 

9.14 0.1 99.68 

8.98 0.1 99.78 

Source Region = AL 

Receptor Area 

BTR 

SAN 

PHX 

0 KC 

MEM 

HGB 

ELP 

DFW 

DEN 

BPA 

Source Region = AR 

Receptor Area 

MEM 

DFW 

SAN 

PHX 

OKC 

HGB 

ELP 

DEN 

BTR 

BPA 

Source Region = BC 

Receptor Area 

DEN 

MEM 

SAN 

PHX 

0 KC 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb # values 

0 0 0 0 67 14.41 205 44.09 32 6.88 19 4.09 8 1 

0 0 0 0 45 40.91 20 18.18 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 62 43.66 3 2.11 0 0 0 0 0 0 

0 0 0 0 204 26.12 194 24.84 60 7.68 4 0.51 0 0 

0 0 0 0 387 36.96 241 23.02 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 464 39.56 243 20.72 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 147 38.28 135 35.16 9 2.34 0 0 0 0 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb #values 

0 0 0 0 78 9.99 157 20.1 163 20.87 95 12.16 66 8 

0 0 0 0 282 24.04 348 29.67 140 11.94 22 1.88 5 0 

0 0 0 0 49 44.55 16 14.55 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 38 26.76 50 35.21 19 13.38 0 0 0 0 

0 0 0 0 432 41.26 192 18.34 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 34 7.31 7 1.51 0 0 0 0 0 0 

0 0 0 0 131 34.11 35 9.1 1 0 0 0 0 0 0 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb # values 

0 0 0 0 0 0 0 0 3 4.29 9 12.86 18 25 

0 0 0 0 8 1.02 467 59.8 259 33.16 43 5.51 4 0 

0 0 0 0 0 0 34 30.91 76 69.09 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 55 38.73 75 52.82 12 8.45 0 0 
HGB 

ELP 

DFW 

BTR 

BPA 

Source Region = CO 

Receptor Area 

DEN 

SAN 

PHX 

OKC 

MEM 

HGB 

ELP 

DFW 

BTR 

B PA 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb # values 

0 0 0 0 0 0 0 0 0 0 0 0 4 5 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

Source Region = Canada 

Number of values in the ppb range 

Receptor Area 2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb # values 

SAN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 

PHX 0 0 0 0 0 0 0 0 0 0 0 0 0 0 

OKC 0 0 0 0 0 0 0 0 0 0 0 0 0 0 

MEM 0 0 0 0 69 8.83 0 0 0 0 0 0 0 0 

HGB 0 0 0 0 43 4.1 1 0 0 0 0 0 0 0 0 

ELP 0 0 0 0 0 0 0 0 0 0 0 0 0 0 

DFW 0 0 0 0 28 2.39 0 0 0 0 0 0 0 0 

DEN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 

BTR 0 0 0 0 0 0 0 0 0 0 0 0 0 0 

B PA 0 0 0 0 18 4.69 0 0 0 0 0 0 0 0 

Source Region = East 

Number of values in the ppb range 

Receptor Area 2 to 5 % total 5 to 10 Oh total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb #values 
MEM 

BTR 

SAN 

PHX 

OKC 

HGB 

ELP 

DFW 

DEN 

BPA 

Source Region = Gulf 

Receptor Area 

HGB 

SAN 

PHX 

OKC 

MEM 

ELP 

DFW 

DEN 

BTR 

BPA 

Source Region = IA 

Receptor Area 

SAN 

PHX 

OKC 

MEM 

HGB 

ELP 

DFW 

DEN 

BTR 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb #values 

0 0 0 0 315 30.09 129 12.32 30 2.87 15 1.43 3 0 

0 0 0 0 24 21.82 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 204 43.87 44 9.46 5 1.08 0 0 0 0 

0 0 0 0 155 40.36 66 17.19 11 2.86 2 0.52 0 0 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 Oh total 20 to 25 % total >25 % total Mean ppb # values 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 7 0.9 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 
Source Region = IC 

Receptor Area 

SAN 

PHX 

OKC 

MEM 

HGB 

ELP 

DFW 

DEN 

BTR 

BPA 

Source Region = IL 

Receptor Area 

SAN 

PHX 

OKC 

MEM 

HGB 

ELP 

DFW 

DEN 

BTR 

B PA 

Source Region = IN 

Receptor Area 

SAN 

PHX 

OKC 

MEM 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb #values 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb # values 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 18 12.68 3 2.11 0 0 0 0 0 0 

0 0 0 0 228 29.19 72 9.22 46 5.89 3 0.38 0 0 

0 0 0 0 235 22.45 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 154 13.13 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 44 9.46 0 0 0 0 0 0 0 0 

0 0 0 0 81 21.09 0 0 0 0 0 0 0 0 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb #values 

0 0 0 0 2 1.82 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 14 9.86 0 0 0 0 0 0 0 0 

0 0 0 0 21627.66 105 13.44 43 5.51 0 0 0 0 
HGB 

ELP 

DFW 

DEN 

BTR 

B PA 

Source Region = KS 

Receptor Area 

SAN 

PHX 

0 KC 

MEM 

HGB 

ELP 

DFW 

DEN 

BTR 

B PA 

Source Region = KY 

Receptor Area 

SAN 

PHX 

OKC 

MEM 

HGB 

ELP 

DFW 

DEN 

BTR 

B PA 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb #values 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 13 9.15 10 7.04 1 0.7 0 0 0 0 

0 0 0 0 10 1.28 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 90 7.67 37 3.15 0 0 0 0 0 0 

0 0 0 0 4 5.71 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb #values 

0 0 0 0 58 52.73 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 19 13.38 0 0 0 0 0 0 0 0 

0 0 0 0 145 18.57 238 30.47 165 21.13 15 1.92 0 0 

0 0 0 0 465 44.41 18 1.72 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 276 23.53 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 78 16.77 0 0 0 0 0 0 0 0 

0 0 0 0 84 21.88 20 5.21 0 0 0 0 0 0 

Source Region = LA 

Number of values in the ppb range 
Receptor Area 

B PA 

HGB 

BTR 

SAN 

PHX 

OKC 

MEM 

ELP 

DFW 

DEN 

Source Region = MI 

Receptor Area 

SAN 

P HX 

OKC 

MEM 

HGB 

ELP 

DFW 

DEN 

BTR 

BPA 

Source Region = MN 

Receptor Area 

SAN 

PHX 

OKC 

MEM 

HGB 

ELP 

DFW 

DEN 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb # values 

0 0 0 0 3 0.78 40 10.42 62 16.15 59 15.36 76 19 

0 0 0 0 40 3.82 258 24.64 400 38.2 278 26.55 57 5 

0 0 0 0 0 0 0 0 0 0 1 0.22 5 1 

0 0 0 0 27 24.55 58 52.73 12 10.91 13 11.82 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 78 54.93 17 11.97 0 0 0 0 0 0 

0 0 0 0 103 13.19 45 5.76 7 0.9 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 230 19.61 398 33.93 217 18.5 9 0.77 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb # values 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 25 3.2 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 Oh total 20 to 25 % total >25 Oh total Mean ppb #values 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 
BTR 

BPA 

Source Region = MO 

Receptor Area 

SAN 

PHX 

OKC 

MEM 

HGB 

ELP 

DFW 

DEN 

BTR 

BPA 

Source Region = MS 

Receptor Area 

MEM 

SAN 

PHX 

OKC 

HGB 

ELP 

DFW 

DEN 

BTR 

B PA 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb #values 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 19 13.38 1 0.7 5 3.52 2 1.41 0 0 

0 0 0 0 262 33.55 123 15.75 14 1.79 2 0.26 0 0 

0 0 0 0 237 22.64 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 234 19.95 14 1.19 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 43 9.25 0 0 0 0 0 0 0 0 

0 0 0 0 58 15.1 0 0 0 0 0 0 0 0 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb # values 

0 0 0 0 239 30.6 127 16.26 87 11.14 48 6.15 14 1 

0 0 0 0 73 66.36 21 19.09 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 65 45.77 18 12.68 0 0 0 0 0 0 

0 0 0 0 626 59.79 327 31.23 17 1.62 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 502 42.8 282 24.04 2 0.17 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 116 24.95 236 50.75 92 19.78 8 1.72 0 0 

0 0 0 0 151 39.32 186 48.44 28 7.29 0 0 0 0 

Source Region = Mexico 

Number of values in the ppb range 

Receptor Area 2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb # values 

SAN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 

PHX 0 0 0 0 0 0 0 0 0 0 0 0 0 0 

OKC 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
MEM 

HGB 

ELP 

DFW 

DEN 

BTR 

B PA 

Source Region = ND 

Receptor Area 

SAN 

PHX 

OKC 

MEM 

HGB 

ELP 

DFW 

DEN 

BTR 

BPA 

Source Region = NE 

Receptor Area 

SAN 

PHX 

OKC 

MEM 

HGB 

ELP 

DFW 

DEN 

BTR 

B PA 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb # values 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb #values 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 5 3.52 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 1 0.09 0 0 0 0 0 0 0 0 

0 0 0 0 8 11.43 1 1.43 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

Source Region = NM 
Receptor Area 

SAN 

PHX 

OKC 

MEM 

HGB 

ELP 

DFW 

DEN 

BTR 

BPA 

Source Region = OK 

Receptor Area 

DFW 

OKC 

SAN 

PHX 

MEM 

HGB 

ELP 

DEN 

BTR 

BPA 

Source Region = SD 

Receptor Area 

SAN 

PHX 

OKC 

MEM 

HGB 

ELP 

DFW 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb # values 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 2 1 30 12 17.14 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb #values 

0 0 0 0 143 12.19 42 3.58 48 4.09 46 3.92 12 1 

0 0 0 0 0 0 0 0 0 0 2 1.41 11 7 

0 0 0 0 14 12.73 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 12 1.54 0 0 0 0 0 0 0 0 

0 0 0 0 1 0.1 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 1 1.43 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb #values 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 
DEN 

BTR 

BPA 

Source Region = TN 

Receptor Area 

MEM 

SAN 

PHX 

OKC 

HGB 

ELP 

DFW 

DEN 

BTR 

BPA 

Source Region = TX 

Receptor Area 

BPA 

OKC 

HGB 

DFW 

SAN 

PHX 

MEM 

ELP 

DEN 

BTR 

Source Region = WI 

Receptor Area 

SAN 

PHX 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb #values 

0 0 0 0 8 1.02 37 4.74 41 5.25 85 10.88 80 10 

0 0 0 0 91 82.73 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 52 36.62 3 2.11 0 0 0 0 0 0 

0 0 0 0 556 53.1 87 8.31 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 560 47.74 90 7.67 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 64 13.76 67 14.41 0 0 0 0 0 0 

0 0 0 0 203 52.86 36 9.38 0 0 0 0 0 0 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb #values 

0 0 0 0 0 0 0 0 12 3.12 38 9.9 42 10 

0 0 0 0 10 7.04 15 10.56 21 14.79 34 23.94 20 14 

0 0 0 0 0 0 1 0.1 2 0.19 12 1.15 42 4 

0 0 0 0 0 0 0 0 0 0 7 0.6 3 1 2 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 53 6.79 34 4.35 13 1.66 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 30 42.86 6 8.57 0 0 0 0 0 0 

0 0 0 0 58 12.47 15 3.23 29 6.24 3 0.65 0 0 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb # values 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 
OKC 

MEM 

HGB 

ELP 

DFW 

DEN 

BTR 

B PA 

Source Region = WY 

Receptor Area 

SAN 

PHX 

OKC 

MEM 

HGB 

ELP 

DFW 

DEN 

BTR 

BPA 

Number of values in the ppb range 

2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb # values 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 27 38.57 7 10 1 1.43 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

0 0 0 0 0 0 0 0 0 0 0 0 0 0 

Source Region = West 

Number of values in the ppb range 

Receptor Area 2 to 5 % total 5 to 10 % total 10 to 15 % total 15 to 20 % total 20 to 25 % total >25 % total Mean ppb # values 

SAN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 

PHX 0 0 0 0 0 0 0 0 0 0 0 0 0 0 

OKC 0 0 0 0 0 0 0 0 0 0 0 0 0 0 

MEM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 

HGB 0 0 0 0 0 0 0 0 0 0 0 0 0 0 

ELP 0 0 0 0 0 0 0 0 0 0 0 0 0 0 

DFW 0 0 0 0 0 0 0 0 0 0 0 0 0 0 

DEN 0 0 0 0 27 38.57 11 15.71 19 27.14 2 2.86 0 0 

BTR 0 0 0 0 0 0 0 0 0 0 0 0 0 0 

BPA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
Source Region = AL 

Receptor Area 

HGB 

BTR 

BPA 

MEM 

DFW 

SAN 

OKC 

DEN 

PHX 

ELP 

Source Region = AR 

Receptor Area 

MEM 

DFW 

0 KC 

HGB 

SAN 

B PA 

BTR 

DEN 

PHX 

ELP 

Source Region = BC 

Receptor Area 

DFW 

0 KC 

SAN 

BTR 

DEN 

# values = 1047 

# values = 465 

# values = 384 

# values = 781 

# values = 1 173 

# values = 1 10 

# values = 142 

# values = 70 

# values = 0 

# values = 0 

# values = 781 

# values = 11 73 

# values = 142 

# values = 1047 

# values = 1 10 

# values = 384 

# values = 465 

# values = 70 

# values = 0 

# values = 0 

Minimum 10th Pctl Median 

0 1 

0 0 

0 1 

0 0 

0 0 

0 1 

0 0 

0 0 

0 0 

0 0 

Minimum 10th Pctl Median 

0 2 

0 0 

0 1 

0 0 

0 1 

0 0 

0 0 

0 0 

0 0 

0 0 

Minimum 10th Pctl Median 

#values = 1173 5 6 

# values = 142 6 8 

# values = 11 0 6 7 

# values = 465 4 6 

# values = 70 13 16 

ppb Contribution 

Mean 90th Pctl Maximum #values 

2 3 7 10 1047 

6 6 11 23 465 

3 4 8 11 384 

3 4 9 16 781 

3 3 6 8 1173 

2 3 7 8 110 

2 2 4 5 142 

0 0 0 0 70 

0 0 0 0 0 

0 0 0 0 0 

ppb Contribution 

Mean 90th Pctl Maximum #values 

12 14 31 51 781 

4 5 11 22 1173 

5 5 11 15 142 

3 3 6 10 1047 

3 3 6 6 110 

1 2 5 9 384 

0 1 2 5 465 

0 0 0 0 70 

0 0 0 0 0 

0 0 0 0 0 

ppb Contribution 

Mean 90th Pctl Maximum # values 

11 11 15 18 1173 

11 12 15 19 142 

12 11 13 14 110 

10 10 14 19 465 

27 27 43 46 70 
MEM 

HGB 

B PA 

PHX 

ELP 

Source Region = CO 

Receptor Area 

DEN 

DFW 

HGB 

MEM 

BTR 

BPA 

OKC 

SAN 

PHX 

ELP 

Source Region = Canada 

Receptor Area 

DFW 

HGB 

MEM 

OKC 

SAN 

BPA 

BTR 

DEN 

PHX 

ELP 

Source Region = East 

# values = 781 4 6 

# values = 1047 3 6 

# values = 384 3 5 

# values = 0 0 0 

# values = 0 0 0 

# values = 70 

# values = 11 73 

# values = 1047 

# values = 781 

# values = 465 

# values = 384 

# values = 142 

#values = 110 

# values = 0 

# values = 0 

# values = 11 73 

# values = 1047 

# values = 781 

# values = 142 

# values = 11 0 

# values = 384 

# values = 465 

# values = 70 

# values = 0 

# values = 0 

Minimum 10th Pctl Median 

22 27 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

Minimum 10th Pctl Median 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

Receptor Area Minimum 10th Pctl Median 

ppb Contribution 

Mean 90th Pctl Maximum # values 

45 44 55 65 70 

0 0 0 0 1173 

0 0 0 0 1047 

0 0 0 0 781 

0 0 0 0 465 

0 0 0 0 384 

0 0 0 0 142 

0 0 0 0 110 

0 0 0 0 0 

0 0 0 0 0 

ppb Contribution 

Mean 90th Pctl Maximum 

0 1 1 

0 1 1 

1 1 2 

0 1 1 

0 1 1 

0 0 1 

0 0 1 

0 0 0 

0 0 0 

0 0 0 

# values 

3 1173 

3 1047 

5 781 

2 142 

2 110 

3 384 

1 465 

0 70 

0 0 

0 0 

ppb Contribution 

Mean 90th Pctl Maximum # values 
MEM 

HGB 

DFW 

BTR 

SAN 

BPA 

OKC 

DEN 

PHX 

ELP 

Source Region = Gulf 

Receptor Area 

HGB 

BPA 

BTR 

SAN 

DFW 

MEM 

OKC 

DEN 

PHX 

ELP 

Source Region = IA 

Receptor Area 

DFW 

MEM 

OKC 

BTR 

HGB 

B PA 

SAN 

DEN 

PHX 

# values = 781 

# values = 1047 

#values = 1173 

# values = 465 

# values = 1 10 

# values = 384 

# values = 142 

# values = 70 

# values = 0 

# values = 0 

# values = 1047 

# values = 384 

# values = 465 

# values = 1 10 

# values = 1 173 

# values = 781 

# values = 142 

# values = 70 

# values = 0 

# values = 0 

#values = 1173 

# values = 781 

# values = 142 

# values = 465 

# values = 1047 

# values = 384 

# values = 1 10 

# values = 70 

# values = 0 

Minimum 10th Pctl Median 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

Minimum 10th Pctl Median 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

ppb Contribution 

Mean 90th Pctl Maximum #values 

2 3 7 22 1047 

2 3 8 17 384 

2 3 5 13 465 

0 1 3 5 110 

0 0 1 1 1173 

0 0 1 2 781 

0 0 0 1 142 

0 0 0 0 70 

0 0 0 0 0 

0 0 0 0 0 

ppb Contribution 

Mean 90th Pctl Maximum #values 

0 0 1 2 1173 

0 0 1 5 781 

0 0 1 2 142 

0 0 1 1 465 

0 0 0 1 1047 

0 0 0 1 384 

0 0 0 0 110 

0 0 0 0 70 

0 0 0 0 0 
# values = 0 0 0 

Source Region = IC 

Receptor Area 

DFW 

HGB 

MEM 

BTR 

B PA 

OKC 

SAN 

DEN 

PHX 

ELP 

Source Region = IL 

Receptor Area 

MEM 

DFW 

HGB 

B PA 

SAN 

OKC 

BTR 

DEN 

PHX 

ELP 

Source Region = IN 

Receptor Area 

MEM 

HGB 

DFW 

B PA 

# values = 11 73 

# values = 1047 

# values = 781 

# values = 465 

# values = 384 

# values = 142 

#values= 110 

# values = 70 

# values = 0 

# values = 0 

# values = 781 

# values = 11 73 

# values = 1047 

# values = 384 

# values = 1 10 

# values = 142 

# values = 465 

# values = 70 

# values = 0 

# values = 0 

Minimum 10th Pctl Median 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

Minimum 10th Pctl Median 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

Minimum 10th Pctl Median 

# values = 781 0 0 

# values = 1047 0 0 

# values = 11 73 0 0 

# values = 384 0 0 

ppb Contribution 

Mean 90th Pctl Maximum #values 

0 0 0 0 1173 

0 0 0 0 1047 

0 0 0 0 781 

0 0 0 0 465 

0 0 0 0 384 

0 0 0 0 142 

0 0 0 0 110 

0 0 0 0 70 

0 0 0 0 0 

0 0 0 0 0 

ppb Contribution 

Mean 90th Pctl Maximum #values 

2 3 6 16 781 

1 1 2 4 1173 

1 1 2 3 1047 

1 1 3 4 384 

1 1 2 2 110 

0 1 3 6 142 

0 1 2 5 465 

0 0 0 0 70 

0 0 0 0 0 

0 0 0 0 0 

ppb Contribution 

Mean 90th Pctl Maximum #values 

2 3 7 15 781 

1 1 2 4 1047 

1 1 1 4 1173 

1 1 3 4 384 
OKC 

SAN 

BTR 

DEN 

PHX 

ELP 

Source Region = KS 

Receptor Area 

OKC 

DFW 

HGB 

MEM 

BPA 

SAN 

BTR 

DEN 

PHX 

ELP 

Source Region = KY 

Receptor Area 

MEM 

HGB 

SAN 

DFW 

BPA 

OKC 

BTR 

DEN 

PHX 

ELP 

# values = 142 0 0 

#values= 110 0 0 

# values = 465 0 0 

# values = 70 0 0 

# values = 0 0 0 

# values = 0 0 0 

# values = 142 

#values = 1173 

# values = 1047 

# values = 781 

# values = 384 

#values = 110 

# values = 465 

# values = 70 

# values = 0 

# values = 0 

Minimum 10th Pctl Median 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

Minimum 10th Pctl Median 

# values = 781 0 1 

# values = 1047 0 0 

#values = 110 0 1 

# values = 11 73 0 0 

# values = 384 0 0 

# values = 142 0 0 

# values = 465 0 0 

# values = 70 0 0 

# values = 0 0 0 

# values = 0 0 0 

ppb Contribution 

Mean 90th Pctl Maximum # values 

0 1 3 12 142 

0 1 2 8 1173 

0 0 1 1 1047 

0 0 1 3 781 

0 0 1 1 384 

0 0 1 1 110 

0 0 0 1 465 

0 0 1 2 7 0 

0 0 0 0 0 

0 0 0 0 0 

ppb Contribution 

Mean 90th Pctl Maximum # values 

6 6 12 18 781 

2 2 4 6 1047 

2 2 3 3 110 

1 1 3 4 1173 

1 2 4 6 384 

1 1 2 4 142 

0 1 3 5 465 

0 0 0 0 70 

0 0 0 0 0 

0 0 0 0 0 

Source Region = LA 

ppb Contribution 
Receptor Area 

HGB 

BTR 

B PA 

DFW 

SAN 

0 KC 

MEM 

DEN 

PHX 

ELP 

Source Region = MI 

Receptor Area 

HGB 

MEM 

0 KC 

DFW 

SAN 

BTR 

B PA 

DEN 

PHX 

ELP 

Source Region = MN 

Receptor Area 

DFW 

HGB 

MEM 

BTR 

B PA 

OKC 

SAN 

DEN 

# values = 1047 

# values = 465 

# values = 384 

# values = 1 173 

#values= 110 

# values = 142 

# values = 781 

# values = 70 

# values = 0 

# values = 0 

# values = 1047 

# values = 781 

# values = 142 

# values = 1 173 

#values = 110 

# values = 465 

# values = 384 

# values = 70 

# values = 0 

# values = 0 

# values = 11 73 

# values = 1047 

# values = 781 

# values = 465 

# values = 384 

# values = 142 

# values = 1 10 

# values = 70 

Minimum 10th Pctl Median 

1 6 

17 36 

0 9 

0 0 

3 3 

0 0 

0 0 

0 0 

0 0 

0 0 

Minimum 10th Pctl Median 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

Minimum 10th Pctl Median 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

Mean 90th Pctl Maximum #values 

13 13 19 27 1047 

50 51 68 8 5 465 

21 20 32 40 384 

5 6 12 17 1173 

6 8 15 18 110 

3 3 6 8 142 

0 1 4 15 78 1 

0 0 0 0 70 

0 0 0 0 0 

0 0 0 0 0 

ppb Contribution 

Mean 90th Pctl Maximum # values 

0 0 0 2 1047 

0 0 1 4 78 1 

0 0 1 2 142 

0 0 0 1 1173 

0 0 1 1 110 

0 0 0 1 465 

0 0 0 1 384 

0 0 0 0 70 

0 0 0 0 0 

0 0 0 0 0 

ppb Contribution 

Mean 90th Pctl Maximum # values 

0 0 0 1 1173 

0 0 0 1 1047 

0 0 0 2 781 

0 0 0 1 465 

0 0 0 1 384 

0 0 0 1 142 

0 0 0 0 110 

0 0 0 0 70 
PHX 

ELP 

Source Region = MO 

Receptor Area 

MEM 

HGB 

DFW 

OKC 

SAN 

BPA 

BTR 

DEN 

PHX 

ELP 

Source Region = MS 

Receptor Area 

BTR 

HGB 

DFW 

MEM 

BPA 

SAN 

0 KC 

DEN 

PHX 

ELP 

Source Region = Mexico 

Receptor Area 

DEN 

DFW 

0 KC 

# values = 0 

# values = 0 

# values = 781 

# values = 1047 

# values = 1 173 

# values = 142 

#values = 110 

# values = 384 

# values = 465 

# values = 70 

# values = 0 

# values = 0 

# values = 465 

# values = 1047 

# values = 11 73 

# values = 781 

# values = 384 

# values = 1 10 

# values = 142 

# values = 70 

# values = 0 

# values = 0 

# values = 70 

# values = 1 173 

# values = 142 

Minimum 10th Pctl Median 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

Minimum 10th Pctl Median 

1 3 

0 2 

0 0 

0 0 

0 3 

1 1 

0 0 

0 0 

0 0 

0 0 

Minimum 10th Pctl Median 

0 0 

0 0 

0 0 

ppb Contribution 

Mean 90th Pctl Maximum # values 

2 3 7 17 781 

1 1 3 4 1047 

0 1 3 6 1173 

0 1 3 16 1 42 

1 1 2 2 110 

0 1 2 4 384 

0 0 2 3 465 

0 0 0 0 70 

0 0 0 0 0 

0 0 0 0 0 

ppb Contribution 

Mean 90th Pctl Maximum # values 

7 7 12 17 465 

4 5 7 13 1047 

4 3 6 10 1173 

3 6 15 30 781 

5 6 9 12 384 

3 4 6 7 110 

2 2 5 6 142 

0 0 0 0 70 

0 0 0 0 0 

0 0 0 0 0 

ppb Contribution 

Mean 90th Pctl Maximum #values 

1 1 1 2 70 

0 0 0 2 1173 

0 0 0 1 142 
HGB 

MEM 

BTR 

BPA 

SAN 

PHX 

ELP 

Source Region = ND 

Receptor Area 

DFW 

0 KC 

HGB 

MEM 

BTR 

BPA 

SAN 

DEN 

PHX 

ELP 

Source Region = NE 

Receptor Area 

DFW 

DEN 

OKC 

MEM 

HGB 

BTR 

B PA 

SAN 

PHX 

ELP 

# values = 1047 0 0 

# values = 781 0 0 

# values = 465 0 0 

# values = 384 0 0 

#values= 110 0 0 

# values = 0 0 0 

# values = 0 0 0 

# values = 1 173 

# values = 142 

# values = 1047 

# values = 781 

# values = 465 

# values = 384 

#values = 110 

# values = 70 

# values = 0 

# values = 0 

# values = 11 73 

# values = 70 

# values = 142 

# values = 781 

# values = 1047 

# values = 465 

# values = 384 

# values = 11 0 

# values = 0 

# values = 0 

Minimum 10th Pctl Median 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

Minimum 10th Pctl Median 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

ppb Contribution 

Mean 90th Pctl Maximum # values 

0 0 0 0 1173 

0 0 0 1 142 

0 0 0 0 1047 

0 0 0 0 78 1 

0 0 0 0 465 

0 0 0 0 384 

0 0 0 0 110 

0 0 0 0 70 

0 0 0 0 0 

0 0 0 0 0 

ppb Contribution 

Mean 90th Pctl Maximum # values 

0 0 0 2 1173 

0 1 3 5 70 

0 0 0 3 142 

0 0 0 1 781 

0 0 0 0 1047 

0 0 0 0 46 5 

0 0 0 0 384 

0 0 0 0 110 

0 0 0 0 0 

0 0 0 0 0 

Source Region = NM 
Receptor Area 

DEN 

DFW 

OKC 

HGB 

MEM 

BTR 

B PA 

SAN 

PHX 

ELP 

Source Region = OK 

Receptor Area 

OKC 

DFW 

SAN 

HGB 

MEM 

BTR 

DEN 

B PA 

PHX 

ELP 

Source Region = SD 

Receptor Area 

DFW 

MEM 

DEN 

0 KC 

HGB 

BTR 

B PA 

# values = 70 

#values = 1173 

# values = 142 

# values = 1047 

# values = 781 

# values = 465 

# values = 384 

#values = 110 

# values = 0 

# values = 0 

# values = 142 

# values = 1 173 

#values = 110 

# values = 1047 

#values = 781 

# values = 465 

# values = 70 

# values = 384 

# values = 0 

# values = 0 

Minimum 10th Pctl Median 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

Minimum 10th Pctl Median 

19 25 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

Minimum 10th Pctl Median 

# values = 1 173 0 0 

# values = 781 0 0 

# values = 70 0 0 

# values = 142 0 0 

# values = 1047 0 0 

# values = 465 0 0 

# values = 384 0 0 

ppb Contribution 

Mean 90th Pctl Maximum # values 

1 3 5 7 70 

0 0 0 0 1173 

0 0 0 1 142 

0 0 0 0 1047 

0 0 0 0 78 1 

0 0 0 0 465 

0 0 0 0 384 

0 0 0 0 110 

0 0 0 0 0 

0 0 0 0 0 

ppb Contribution 

Mean 90th Pctl Maximum #values 

35 37 50 57 142 

1 3 8 26 1173 

0 1 2 3 110 

0 0 1 2 1047 

0 0 1 4 78 1 

0 0 0 1 465 

0 0 1 2 70 

0 0 0 0 384 

0 0 0 0 0 

0 0 0 0 0 

ppb Contribution 

Mean 90th Pctl Maximum # values 

0 0 0 1 1173 

0 0 0 1 781 

0 0 1 3 70 

0 0 0 1 142 

0 0 0 0 1047 

0 0 0 0 465 

0 0 0 0 384 
SAN 

PHX 

ELP 

Source Region = TN 

Receptor Area 

MEM 

HGB 

DFW 

SAN 

B PA 

OKC 

BTR 

DEN 

PHX 

ELP 

Source Region = TX 

Receptor Area 

DFW 

HGB 

SAN 

BPA 

OKC 

BTR 

MEM 

DEN 

PHX 

ELP 

Source Region = WI 

Receptor Area 

MEM 

DFW 

#values = 110 0 0 

# values = 0 0 0 

# values = 0 0 0 

# values = 781 

# values = 1047 

# values = 11 73 

# values = 1 10 

# values = 384 

# values = 142 

# values = 465 

# values = 70 

# values = 0 

# values = 0 

# values = 11 73 

# values = 1047 

# values = 1 10 

# values = 384 

# values = 142 

# values = 465 

# values = 781 

# values = 70 

# values = 0 

# values = 0 

Minimum 10th Pctl Median 

4 14 

0 0 

0 0 

0 1 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

Minimum 10th Pctl Median 

17 32 

10 2 8 

26 33 

11 18 

0 1 

0 0 

0 0 

0 0 

0 0 

0 0 

Minimum 10th Pctl Median 

# values = 781 0 0 

# values = 1 173 0 0 

ppb Contribution 

Mean 90th Pctl Maximum # values 

31 32 49 76 781 

3 3 5 6 1047 

2 2 5 9 1173 

3 3 4 4 110 

2 3 5 9 384 

2 2 4 6 142 

1 2 6 9 465 

0 0 0 0 70 

0 0 0 0 0 

0 0 0 0 0 

ppb Contribution 

Mean 90th Pctl Maximum # values 

47 49 70 105 1173 

44 46 65 90 1047 

44 43 5 1 63 110 

33 34 50 86 384 

15 14 27 34 142 

0 2 5 17 465 

0 1 2 13 78 1 

2 2 5 6 70 

0 0 0 0 0 

0 0 0 0 0 

ppb Contribution 

Mean 90th Pctl Maximum # values 

0 0 1 2 781 

0 0 0 1 1173 
HGB 

BTR 

B PA 

0 KC 

SAN 

DEN 

PHX 

ELP 

Source Region = WY 

Receptor Area 

DEN 

MEM 

DFW 

HGB 

BTR 

BPA 

0 KC 

SAN 

PHX 

ELP 

Source Region = West 

Receptor Area 

DEN 

0 KC 

DFW 

HGB 

MEM 

BTR 

SAN 

BPA 

PHX 

ELP 

# values = 1047 

# values = 465 

# values = 384 

# values = 142 

# values = 1 10 

# values = 70 

# values = 0 

# values = 0 

# values = 70 

# values = 781 

# values = 1 173 

# values = 1047 

# values = 465 

# values = 384 

# values = 142 

# values = 1 10 

# values = 0 

# values = 0 

# values = 70 

# values = 142 

# values = 1 173 

# values = 1047 

# values = 781 

# values = 465 

#values= 110 

# values = 384 

# values = 0 

# values = 0 

Minimum 10th Pctl Median 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

Minimum 10th Pctl Median 

1 2 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

ppb Contribution 

Mean 90th Pctl Maximum # values 

2 3 5 11 70 

0 0 0 1 78 1 

0 0 0 0 1173 

0 0 0 0 1047 

0 0 0 0 465 

0 0 0 0 384 

0 0 0 0 142 

0 0 0 0 110 

0 0 0 0 0 

0 0 0 0 0 

ppb Contribution 

Mean 90th Pctl Maximum # values 

4 7 14 16 70 

1 1 1 1 142 

0 0 1 2 1173 

0 0 1 2 1047 

0 0 1 2 78 1 

0 0 1 2 465 

0 0 1 1 110 

0 0 0 1 384 

0 0 0 0 0 

0 0 0 0 0 
Receptor Area = BPA -. 

Number -- of ~ values in the ppb 

Source Area ~ Zto 5 ~p~ 

TX 

! 

AL ~ ~ 

.~ 

TN 203 

3 

-. .- 

~ 

IN ~. 

I L - ~ ~- - 

1 

WY -. ~ ~ 

0 

WI 

OK 

-. 

- 

NM ~.~ ~. - 

0 

NE 

0 

.- 

0 

~ 

-~ 

KS i ~ ---- ~- ~. 

IC 

- - .. -- . - . .- 0 

1 A 0 

.~ - ~- - 

Canada -- -~ 0 

~ ~ 

~ 

Source Area 
- 

LA . .. - I------ i ~- p~ -- 5 1 

East -. -~ - 

BC I o i 
NM . 

TX .~ -- 

NE -~ -~~ 1 . . - - - -- I - 

Mexico . I - -- - - ~- ~~~~~ 

WI - -. C 

- 

TN . 

SD ~ 

-- -. P- --- 

OK . -~ 

ND 

~ ~ ~ . 

MS .~ ~ ~-- C 

MO I - . -~~ - .~ 0 

MN ~ 

MI - -. - 

LA ~ ~ 

Kv-- 

KS ~- -~ 

0 

IN -- - ~~ ------ - 

I L ~-~ .~ -- .-,-. 0 

0 

. -~ - . ~ --~ ~ 

Gulf I 

~ - .-p-. ~ -L 

East ~- 

Canada I 0 

-- ~- -- ?_.I~- 4 -- 

I ~eceptor&a:~~~L -- - - - 

~--.~-P~-. Number of values in the ppb range I 4 2.jT--. Source Area ~~~-~ L 

.-+ ~~ ix- 49 
~~~.. ~ 

MO ~-- ~- -~ 

KY 

KS . 

-- I 

IN ~~ - - 1 

- -- - -- -- -. ~ ..... P~ 

154 1 1 

Canada .. - - - .-- -. wv -. -- . -- - - - - - . 

WI -. - -. .~. ~ .~ 

West 

SD ~ ~ 

NM .. ~ ~ C 

- -- . .. . - - -~ -- 

ND - . .~ -- 

MN ~ ~ - 

~-- ~~ ~ . 

MI 

~~~ .- ~ -. ~ ~ -- - ~ ~ - 

Mexico ~- ~ 

I C - C 

I A - ~~- . - C 

. -- 

~. - ~ - .- 

Receptor Area . = ELP... - ~ 

~-. . - 

-- 

- - ~ -- -~- ~-~ -. 

-- . . - . 

Source Area 

~-~ .~ 

WI - . - . - 

West 

. ..~ . 

SD 

OK ~~ 

~. -. 

NE 

-- ~. . . _ IN!! 

ND 

-- --.. 

-- 

MS - - - 

MO NA 
~ ~~ 

IC -- - . ~~-~ .~ 

I A 

~~~~--~ ~~ . -~ . 

Gulf 

East 

CO 

Canada p-- -- - - 

BC 

- -- ~~ .- -- 

Receptor ~-- ~ Area ~ = HSN I ~-. . ~ ~ 

-- umber of values in the DD~ ranae 

Source Area 2 to 5 -- 

TX I 

8 n " ~ - +-.. 

5to -I ~!TO to 15~ 20 - . 2 ~,-~. . p- 20 to 25 >25 Mean --. ppb 

0 ~ I i 12 42 290 4€ 

-- ~ . -- 

East ~~ 

- . ~- -- - -~ 

MS ~~ -- 

~-. .. 

TN - 1 -- 

. . -- - .. 

Gulf . L ~. -~ 

AR-- . 

- - - . ... - ; -- .. 43 

Canada .. L .- -. ~- .--~-A~~~ 

WY I .. .- - I .- ... . ~ .. 

WI C 
West --~l o ~ ~ .- o 

SD 

- - ~ i---- -- 

NM .. - 0 

NE -. -- .. . 0 

ND 0 

- - -- 0 

MI 0 

. 

KS 

-- - 

IC 

-. -- .- 

I A 0 I 0 

co 

~ . . ~ 

0 

~- 

~ 

.~ -- 

Source Area .. I~ ~ 

TN - 

AR -- . - - - - -- 14 

10 

~. 

- -~ ~- - - 

MS 

- 

KY 

.- 

AL 4 - 

MO 3 

. - - -- -- .. . - . . - 

3 

IL 3 

. - -~ 

LA 

Canada . ~. 1 

- 

wv ~ ~ . -- - 

0 

~-~ -. .- 

NM 

- .- 

NE 0 i 0 
ND i . - - . - 4 -------- -- . - -- .- C 

MN . .- . .- 

MI ~~ 

- 

Mexico 0 i or C 

-~ ~ ~~ -- - ~ + . L ~~-~ 

kalues = 142 

t-. - 

Receptor Area = OKC C - . 

-. -- -. -- ---- ~ ~ J------ 

+Number of values in the oob ranae I I I 

East 

~~- -- . . -. . . 

Receptor Area = SAN -- 

~~ ~ 

~ ..~ . -- -- 

Source Area . -- - 

TX 

-~ .~ .. - -- 

East .~. -- - .- -- ~~ . 31 1 

TN ! 91 

- ~. . - . ~~ -- 

-- 

Gulf 24 . ~ ~,. 

Canada -- ~ 

WI 

West 
1 

i 1 

.- 

-- 

~- 

AL 

Gulf 

TN 

-.. - - ---. -- 

AR ~~ 

KY ~- . ---- 

MO 

. -- 

Canada 

- - - - 

West - 

KS - 

I A 

OK - 0 i 

WI ---- p~ 

MN 

. 

- - - .. 

WY 

- ~ ~ -- --- -- 

ND -- -- 

SD 

NM 

- -.- - -- -- 

~- 

. ---- 

Source Area 
East 

~~ ~- 

MS --pPP ~ -~ .- 

AL 

Gulf 

Number of values in the ppb range 

BC - ~~~ ~- --~ ~ -. - . . 

West 1 
~ ~ - -- 

TX 

.~ ~ 

NE ~ 

Mexico 

-- 

KS -- ~. -- ~. .- -. I 4 

SD ~- 

-~ 

OK -- 

East ~ -- 

Canada 

. -- 1 

MO ~ 

~-. 

ND I--- 

.. - ~ 

y--- -- 

- ~~. ~ 

~- 

Gulf -. - - -- -. -- 

+.-- - --- 

L -- . . . I - - -+---i-~~--l 

Receptor Area = DFW I 1 !#values= 1173, ., - . . .. ii ~ +-.- 

Source Area 

LLX-- o i 

BC 
. 

IN 0 

Gulf ~- ~ 0 0.30226 -.-L .--- -- 

I A ~ - ~- -. -- -- 

0 0.22428 

MI ~ 

~ 

~ ~p~~ 

-- 

CO 

- 

NM 

~ -- -- - . --- ---. - 

IC 

- -- -, - -- L--- 1- I--- Rece~tor Area = ELP I I I 

~~ - 

Source ~~~~ Area 

WY 

-~ ~- 

WI .- 

~~pTX 

- - - -- . -- - 

SD 

-- ~ . ---- - - -. 

OK ~ 

. - - ~~ -~ 

ND ~ 

MS .~ 

MO I NA !NA INA 
I MN I NA NA NA NA !NA INANA ~ 

MI ~ 

,MA-- 

AM ~ ~-- 

Mexico -- ~~ 

NA NA , . . . -- 

. KS . 

-. .. - . . , .- 

~ L-~ -~ ~ -- -~ . - 

&- ~NA - .+-~ 

N A --~ NA.~A+. 

Gulf 4: NA NA 

+ -- .. - ~ <..- LI~ Receptor Area :LTl = HSN I I ..a--- 1~ .-~,- 

1 Number of values in the ppb range - - - - L~ .. - 

Source .- ~.- Area ~ 

TX --~~.-Lp- I=" -- ~ - 

LA ~ 

BC ~ ~ -. -~ -- ~ - p~~ 

East 

- 

AL - -- - -. 

AR 0' 

-- ~~ ~~ ~ ~~ ~- b. A- - - --.i ~ .- 

MO i 237' - -- . -.- -- 01 O! 0: 0--1.09681 -. 

.. 

Canada . - .. 1 ~ 43; 7 OP;~ 0.55651 

West I 0 1 0t 0 0 o', 0.3831f 
+- . 

---- ~ 

0 i 

MN 

- - - 

WY . 

NM - 

ND ~ 

-- 

SD ~ 

Mexico -~ 

---- --- 

Source Area 

TN 

~~ -.--~ -- - - - -- 

Canada 

L - 

West 

KS 
Receptor . Area = OKC 1 +. 

~~~ 

~ -. Number of values in the ~ ppb 

-- 

Source - - Area - - -. - 

'FTO 5 -. -. -. -. - --- 

OK 1 -- 

p~ - -- 

East 

- ~. h - ~- - 

Canada ~ 

. - - 

west 

-- - - 

MI 
SD ~ -- 

~ 

NM 

p.P~ . 

Receptor Area ~-= PHX 1 ~- . .- ~. 

WY 

-- 

WI -- - 

West 

NE 

~ 

MS 

-. 

MN NAP- - - - 

MI 

I L ~- - 

IC 

-- . - - - - - -- 

Gulf . - 

~ 

Canada .~ ~. 

BC 
# values = 1 10 

~ 

. - - 

LA 

MS 

.- ~ 

Gulf 

IN ~ 

MO ... ~ - -- -. 

- -- - ~ 

~ ~ ~ 

KS ~ 

MI ~ - 

CO 

.~ ---- .- 

Mexico ~ . 

WI 

~ -- ~ -~. .- ~-~ 

I C