Request for Proposals for Environmental Economics Services for Integrating Transportation and Stormwater Infrastructure – West Study Area The North Central Texas Council of Governments (NCTCOG) is requesting written proposals from qualified firms(s) to provide environmental economics-related services to support the Transportation and Stormwater Infrastructure (TSI) West Study Area, including parts of two eight-digit hydrologic unit code (HUC8) subbasins, the Upper West Fork Trinity and Lower West Fork Trinity, to increase flood risk awareness and resiliency. The study will integrate planning for transportation, stormwater, and environmental infrastructure to reduce flood risk. Proposals must be received no later than 5:00 p.m., Central Time, on Friday, July 11, 2025, to Kate Zielke, Environment & Development Program Manager, North Central Texas Council of Governments, 616 Six Flags Drive, Arlington, Texas 76011 and electronic submissions to TransRFPs@nctcog.org. The Request for Proposals will be available at www.nctcog.org/rfp by the close of business on Friday, June 13, 2025. NCTCOG encourages participation by disadvantaged business enterprises and does not discriminate on the basis of age, race, color, religion, sex, national origin, or disability. IPL0241083 Jun 13,20 2025