Bryan W. Shaw, Ph.D., P.E., Chainnan Toby Baker, Commissioner Jon Niermann, Commissioner Richard A. Hyde, P.E., Executive Director


### TEXAS COMMISSION ON ENVIRONMENTAL QUAUTY Protecting Texas byReducing andPreventing Pollution May 24,2016

Mr. Michael Morris, P.E., Director ofTransportation North Central Texas Council ofGovernments Post Office Box 5888 Arlington, Texas 76005-5888 RE: Transportation control measure substitution inDallas-Fort Worth ozone nonattainrnent area Dear Mr. Morris: The North Central Texas Council ofGovernments (NCTCOG) began the transportation control measure (TCM) substitutionprocess in early 2016 to remove a high-occupancy vehicle (HOV) lane on US 67 

### /lli 35 between IH 20 and IH 30 (Southern Gateway TCM) andreplace it with 35 traffic signalization TCM projects in the Cities ofAllen, Fairview, and Dallas. The Southern Gateway HOV TCM was originally included inthe Dallas-Fort Worth One-Hour OzoneAttainmentDemonstration State Implementation Plan Revision (Project No. 1999-055-SIP-Al) and then again inthe Dallas-Fort Worth 1997Eight-Hour OzoneAttainmentDemonstration State Implementation Plan Revision (Project No. 2006-013-SIP-NR). The TCM substitution process includes confirming with the Texas Commission onEnvironmental Quality (TCEQ) that there are no potentialbacksliding issues concerning the TCM to be substituted, selecting an appropriate substituteTCM, holding a 30-daypublic comment period andpublic hearing, and establishing concurrence among the convened TCM substitution working group: the NCTCOG, the TCEQ, the Texas Department ofTransportation, the United States Environmental Protection Agency (EPA), and the Federal Highway Administration. The NCTCOG has successfully completed these steps. This TCM substitutionremoves the Southern Gateway HOV TCM andreplaces its associated emissions reductions (nitrogen oxides and volatile organic compounds) with those from the traffic signalization TCM projects referenced above. Verbal concurrence among the consultation partners of the TCM substitution working group was established onMay 23, 2016, demonstrating that this substitution meets the requirements ofClean Air Act, §176(c)(8)(A)(i-iv). This letter confirms the TCEQ's concurrence and complies with the requirement ofCAA, §176(c)(8)(A)(v). The TCM substitution was adoptedbythe NCTCOG Regional Transportation Council onMay 12, 2016. Once a letter of concurrence from EPA, Region 6 isreceived, the TCEQwill submit the substitute TCM and supporting documentation to EPA, Region 6 toupdate the list ofSIP-approved TCMs. We look forward to working with the EPA and the NCTCOG to complete this TCM substitution. Please contact Jamie Zech at 512-239-3935 orjamie.zech@tceq.texas.gov with questions. Sincerely,

David Brymer, Director Air Quality Division DB/jz

P.O. Box 13087 • Austin, Texas 78711-3087 • 512-239-1000 • How is our customer service? tceq.texas.gov/customersurvey printtd on ret.:ydt!d**p;~per**Mr. Michael Morris May 24,2016



### cc: Mr. Ron Curry United States Environmental Protection Agency
Mr. JeffRiley United States Environmental Protection Agency
Mr. Chris Klaus North Central Texas Council of Governments
Mr. Jose Campos Federal Highway Administration Ms. BarbaraMaley Federal Highway Administration Ms. Jackie Ploch Texas Department ofTransportation Ms. Michelle Conkle Texas Department ofTransportation

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