New Items

• TCEQ Public Meeting for West Fork Trinity River TMDL - June 19, 2013, at 6:30 p.m. at 616 Six Flags Drive, Arlington, Texas in the Pitstick Room.
• I-Plan web page with latest I-Plan draft, maps, and more.

TMDL Program

In September of 2011, NCTCOG was tasked by the Texas Commission on Environmental Quality (TCEQ) with supporting the development of Total Maximum Daily Load (TMDL) Implementation Plan (I-Plan) in the Dallas–Fort Worth area of north central Texas. The intent of the I-Plan is to address bacteria levels in several segments of the Trinity River.  The segments include two segments of the Upper Trinity River, from the confluence of the Trinity River with Five Mile Creek upstream to the confluence of the Trinity River with the Elm Fork Trinity River. Also included is the West Fork Trinity from the confluence with the Elm Fork Trinity upstream to the confluence with Village Creek.  Additionally, two tributaries of the Elm Fork Trinity River, Cottonwood Branch and Grapevine Creek, and eleven tributaries of the West Fork Trinity River are included in the project area.

The name of this effort is the Greater Trinity River Bacteria TMDL Project.  After more than a year of meetings with stakeholders, the draft I-Plan was submitted to the TCEQ in August 2012. The I-Plan is comprised of implementations strategies intended to reduce bacteria loading in the impacted river segments and tributaries. The implementation strategies themselves include provisions under the headings of wastewater, stormwater, planning and development, pets, livestock, and wildlife, onsite sewage facilities, monitoring coordination, and education and outreach.

NCTCOG Meetings

Technical Subcommittee Meetings

Select the subcommittee below for schedule, location, agendas, and meeting summaries.

• Education & Outreach
• Monitoring Coordination
• On-site Sewage Facilities
• Parks & Recreation
• Pets, Livestock & Wildlife
• Planning & Development
• Stormwater
• Wastewater

Coordination Committee

• Meeting schedule, location, agendas, presentations, and summaries

General Stakeholder Meetings

• Meeting schedule, location, agendas, presentations, and summaries

NCTCOG TMDL Maps

• Population concentrations by 2010 US Census blocks for Bacteria TMDL watersheds
• On-site Sewage Facility Map in TMDL Area
• Monitoring Locations in TMDL Area Map
• Sanitary Sewer Overflow Map in TMDL Area
• Land Use Map for DFW Bacteria TMDL Area
• MS4 Map for Bacteria TMDL Area
• Wastewater Treatment Facilities Map
• General TMDL Boundary Map
• Upper Trinity bacteria TMDL (Dallas, river segment 0805)
• Trinity West Fork bacteria TMDL (mid-cities, Fort Worth, Dallas, river segment 0841)
• Cottonwood Branch and Grapevine Creek bacteria TMDL (Irving, Coppell, DFW, tributaries of Elm Fork River segment 0822)
• Map of all three bacteria TMDLs (large file)

TCEQ Links for Trinity River TMDLs

• Lower West Fork Trinity River Bacteria TMDL information page
• Upper Trinity River Bacteria TMDL information page
• Adopted TMDL for Dallas river segments 0805_03 and 0805_04
• Adopted Cottonwood Branch and Grapevine Creek Bacteria TMDLs (segments 0822A & 0822B)
• Trinity River PCB TMDL information page
• General information from TCEQ on TMDLs

Bacteria TMDL I-Plan Examples

• Houston-area Bacteria TMDL Implementation Plan
• Carters Creek Draft Bacteria TMDL Implementation Plan
• Gilleland Creek Bacteria TMDL Implementation Plan
• Guadalupe River Bacteria TMDL Implementation Plan

EPA Links for TMDLs

• EPA TMDL page
• EPA TMDL definitions
• EPA November 2010 memo to States regarding TMDLs and stormwater permits (PDF)

Related NCTCOG and NCTCOG-supported programs

• Cease the Grease
• Doo the Right Thing
• Illicit Discharge Detection & Elimination (IDDE)
• iSWM
• Regional Ecosystem Framework (Greenprinting and Regional Watersheds)
• Regional Storm Water Management Program
• Texas SmartScape

For more information on the Greater Trinity River TMDL Project or on how to become involved, contact Jennifer Vuitel, at 817-695-9223 or jvuitel@nctcog.org.