## Mr. Richard A. Hyde Executive Director UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION6 1445 ROSS AVENUE, SUITE 1200 DALLAS TX 75202-2733



## Texas Commission on Environmental Quality, MC 165 Post Office Box 13087 

# MAR 31 2015 Austin, TX 78711-3087 Dear Mr. Hyde: The U.S. Environmental Protection Agency (EPA) Region 6 has concluded its review of the Texas Commission on Environmental Quality's (TCEQ) early 2014 certification ofthe ozone 

## (03 ) ambient air monitoring data for completeness to ensure it meets the requirements ofTitle 40 of the Code ofFederal Regulations (CFR) Part 58 and its appendices. Specifically, our review addressed the 03 data for the Dallas-Fort Worth (DFW) MSA including Collin, Dallas, Denton, Ellis, Hood, Hunt, Johnson, Kaufinan, Parker, Rockwall, Tarrant, and Wise Counties (County Codes 085, 113, 121, 139, 221,231,251,257, 367, 397,439, and 497, respectively) and Navarro County (County Code 349) which adjoins the DFW MSA counties. A separate review will address the 03 data for the Houston-Sugarland

- Baytown MSA. Once our r eview ofthe Houston area data is complete, we will work expeditiously to address your request for a one year extension to the attainment date for the Houston area under the 2008 03 standard. We are pleased to inform you that we have determined the 2014 

## 03 data for these specific counties met all the data quality requirements. We are also very pleased that the DFW area's air quality has improved so that it is currently meeting the 1997 8

-hour ozone air quality standard (i.e. below 85 parts per b illion). The TCEQ has entered the recommended data annotations or data evaluation flags of "Y" into the EPA's national air monitoring database (AQS) to demonstrate that the 2014 

## 03 data for these counties have been through the TCEQ's validation process and have been loaded into the database. We have entered evaluation flags of"Y" for the 

## 03 monitors for these counties in the AQS database for 20 1 4 to reflect that the TCEQ has completed the data certification process for these monitors and the EPA has no unresolved res ervations about the data quality. This information is reflected in the enclosed Certification Evaluation and Concurrence Repo11 (AMP600). · We appreciate the TCEQ's efforts to prepare and submit the early certification package for the 2014 

## 03 data for counties w ithin the DFW MSA and Navarro County. We look forward to working with the TCEQ on the evaluation of the remaining 2014 data certifications. If you have any questions, please contact me at (21 4 ) 665

-7548 or your staff may contact Ms. Trisha Curran ofmy staff at (214) 665- 8345
.

Mark Hansen Acting Associate Director for Air Programs Internet Address (URL) • http:// www. epa .gov / reglon6 Recycled/Recyclable • Printed with Vegetable Oi l Based Inks on 100% Postconsumer , Process Ch l orine F r ee Recyc led PaperU ser ID: CTI Repo rt**Rc~ cs** **t** ID: 131 3283 

# [ Tribal Code State 18 18 48 4 8 48 48 18 48 48 4 8 48 48 48 PROTOCOL S ELECTIONS Pa rameter Clas slCit:a l
. ion Paramett:Ot ' Method CRITERIA 44 20 1 

# L SELECTED OPTIONS Optlo n Type



## - ------- ------ MERGE P DF FILES AGENCY RO LE UN I TED STATES ENVTRONMENTAL PROTECTI ON AGENCY
CERTIFICATION EVALUATI O N AND CONCURRENCE Report Co d e: AMP 6 0 0 GEOGRAP HI C SE Lt:C'l'lONS County

085 1!3 121 139 221 231 251 257 349 367 397 439 49 '1 Sit e Parameter POC City AQCR UAR

AGENCY SELECTIONS 

# I 

# d [

Texas o u

_ Commission O n Env iro nmenta l Quality

Option V a lue YES CERTIFY ING

# ~ CBSA

# [~~~rt DATE CRITERIA

# ~~ Date End 2014 2014

Select i on Cr iteria Page 1 CSA EPA Region



## - - -- - Mar. 30, 2015

# ~

# Data Evaluation and Concurrence Report Summary Mar
. 3 0, 2015 

## Certification Year: 201 4 

## Certifying Agency (CA): Texas Comm i ss i on On Env i ro nmenta l Quali ty (1 0 35 ) 

## Pollutants in Report: Monitors Monitors Recommended for Monitors NOT Recomme n ded P a rameter Name Code Eva l uated Concurrence 

## by AQS for Co nc u r rence 

## by AQS O z o n e 44201 2 0 

## 20 0 

## P QAO s i n Re port: PQAO Name PQAO Code TSA Date T exa s Co m mission On E nv i ronm e n tal Quality 1 035 09/07/ 1 0 

## Summary of ' N ' flags for all pollutants: AQS Cert. Agency Parameter Recomm e nded Recommended PQAO Code AQS Si t e - ID POC Flag Flag Reason for AQS Recommendation Signatu r e of Mo ni tor i ng Organizati o n Re presen t at i ve:

Page 1 of 1

# Data Evaluation and Concurrence Report for Gaseous Pollutants 2014 Certifying Year Certifying Agency Code Param eter**~:.::..:._**

# _____ PQAO Name 

## T exas Commission On Enviro nmental Quality (1035)**one** 

## (44201) (ppm) -:=----,--- - Te xas Commissio n On Environmen tal Quality (1035) 11/07/201 2 APP Approval Date NPAP Audit Summary: Number of Val i d Audits NPAP Bias Criteria Met

OS POC Monitor Min 

# E :in eData ite 10 Type 8

-085.0005 1 SLAMS 0
. 052 0.011 8-113-0069 3 SLAMS 0
. 049 0.007 SLAMS 0.050 0
. 007 SLAMS 0.046 0.011 SLAMS 8

- 1 21- 1 032 1 SPM r. 8-139

- 0016 1 SLAMS r 8-139-1044 1 SLAMS r. 8-221-0001 1 SLAMS !48-231-1006 1 SLAMS

8-25 1-0003 1 SLAMS 8-257-0005 1 SLAMS 8

-349-1051 1 SPM 8-367-0081 1 SLAMS 8-397-0001 1 SLAMS

## 8-439.0075 1 SLAMS

# 8-439-1002 2 SLAMS 8-439-2003 2 S LAMS 8-439-3009 1 SLAMS 8-439-3011 1 SLAMS 0.054 0
.054 0. 047 0045 0.050 0
. 046 0.050 0
. 047 0.045 0.049 0.050 0
. 048 0
.052 0
. 050 0
. 052 0
.046



### - - ·- -- - - - 0.013 0.009 0
.008 0
. 010 0
.015 0.006 0.011 0.007 0 .011 0
. 014 0 .007 0.009 0
. 009 0.010 0.010 0.007 11

Max 0
. 091 0
.090 0
. 096 0.081 0
. 094 0.09 6 0
.077 

### O.o7 9 0. 1 0 7 0
.072 0.087 0.072 

### 0
.077 0
. 089 0
. 080 0
. 092 0
. 105 0.094 0
. 0 94 0
. 09 5 

### 1.48747

Exceed. Outlier Count Count 0 0 0 0 0 0 

### 0 0 0 0 0 0 0 0 0 0 0 0 

### 0 0 0 0 0 0 0 0 

### 0 0 

### 0 0 0 0 

### 0 0 0 0 

### 0 0 0 0 Perc. Comp

. 98 96 86 98 99 99 98 99 98 98 

### 99 98 98 

### 99 98 

### 99 98 

### 99 98 98 

### y
One Point Quality Che ck Preci sion Bias Complete 1
. 38 -2.43 100 2.00 +/-1.75 94 2.26 +/-1 .71 88 2.05 +2
. 30 100 0.61 -1.23 1 00 1
. 53 +/-1.33 100 1
.43 +/-1.12 100 0
.86

-3.95 100 2 .1 5 +2.39 88 1
. 20 +1.27 100 2
. 19 +/-2.04 100 1
. 23 +/-0.96 100 0.86 + 1
.26 100 2.42 +/-2.52 100 1.16 +1.47 100 1
. 80 +2
.58 100 1
. 66 +/-1
. 29 100 1. 24 +/- 1.08 100 1
. 62 +/

- 1. 29 94 0. 74 +/.0.99 100 Annu alPE Bias Complete

- 2.44 100

- 0.14 100 • 3.57 100 • 5 .77 100

. 0.27 100 • 3
.06 100

- 6
. 15 100

- 5
. 80 100

. 3.23 1 00

- 1.83 100

. 4.43 100 • 1. 52 100

- 4.0 1 100

2.48 100 0
. 76 100 • 5
.63 100

0
. 83 100

- 6
.79 100

0
. 32 100

- 3.31 100 N PAP Bias PQAO Level Criteria 

### y 0.72 y 955 

### y 8.53 

### y y y y 

### y y y y y 

### y 3.84 y 1.46 y • 3.33 y y

- 5
.90 y 

### y

- 1.61 y Concur. Flag 

### I**QAP ~**  Aqs Re c CA Rec Epa Appr

. Flag Fl ag Concur

y y y y y y y 

### y y y y y y 

### y y y y y 

### y y y y y y 

### y y y y y y y 

### y y y 

### y y 

### y y y y y y y y y y y y y y y 

### y y y y y y y y y y y y y y y y y y y y y y y y . y y y y y