Medium and Large MS4 regulated entities have storm water permit requirements to monitor storm water during wet weather (rainfall) events. NCTCOG is assisting local entities through a cooperative regional monitoring program designed to meet permit requirements. The regional program includes the cities of Dallas, Fort Worth, Arlington, Garland, Irving, Plano, Mesquite; the local districts of the Texas Department of Transportation; and the North Texas Tollway Authority (NTTA). Through an RFP process, PBS&J (in association with Freese and Nichols, Arredondo, Zepeda and Brunz, and TTI Environmental Laboratories) were awarded a contract to assist the smaller entities of Arlington, Garland, Irving, Plano, Mesquite, TxDOT-Dallas and NTTA with field collection and analysis of storm water samples during this second five-year permit term. Dallas and Fort Worth will use their own staff to collect samples.

The storm water program during the first permit term was designed to capture runoff data from smaller, single land use watersheds. While the analysis of these samples indicated the typical runoff characteristics of each specific land use, the data did not evaluate the impacts on receiving streams. The primary goal of the second permit term's regional sampling program is to determine long-term trends and assess the impact of storm water discharge on receiving stream quality. Data gathered through implementation of the current sampling program will serve as a baseline for future analysis.

The regional monitoring plan calls for the quarterly sampling of up to three monitoring stations in each of the nine watersheds per year for three years beginning January 1, 2007. A total of 300 sample events are anticipated for the permit term. Each sample will be analyzed for 18 parameters. For more detail regarding the monitoring program, click here.

Second Permit Term Regional Monitoring

Interactive Station Map and Data Viewer New!

Watershed Sampling Schedule Map

Sampling Updates

Sampling Lab Reports

Regional Wet Weather Characterization Program Annual Reports

• 2008 Annual Monitoring Report

• Appendix A: RWWCP Proposal
• Appendix B: Letters of Approval from TCEQ
• Appendix C: Updated Sections of Regional Storm Water Monitoring Program Protocol
• Appendix D: Lab Certifications and Accreditations
• Appendix E: Fort Worth Bioassessment Reports
• Appendix F: Year 3 Sample Collection Reports
• Appendix G: Year 3 Raw Sampling Data

Previous reports are available upon request. Please contact Mary Tatum at mtatum@nctcog.org.

First Permit Term Monitoring Information (1996-2001)