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Stormwater Discharges from Construction Activities: Am I Regulated?

Determine whether the Construction General Permit (CGP) for discharges from construction activities, TXR150000, applies to a project and, if so, at what level. Links to pages that explain each level of coverage.

2018 Construction General Permit (TXR150000)

Updated Information TCEQ has reissued the Construction General Permit (CGP) TXR150000 with an effective date of March 5, 2018. This general permit authorizes the discharge of stormwater runoff associated with small and large construction sites and certain non-stormwater discharges into surface water in the state.

For more information about the new 2018 CGP documents and the forms, click on the link below:

Additional Guidance and Quick Links: Construction Activities

Construction General Permit (CGP)

Under the existing CGP TXR150000 Adobe Acrobat PDF Document , issued March 5, 2018, construction activities from which runoff goes into or adjacent to any surface water in the state are regulated according to the area of land disturbed. (Help with PDF.)

Large construction activities which disturb 5 or more acres, or are part of a larger common plan of development that will disturb 5 or more acres, are regulated under this general permit.
Small construction activities which disturb at least 1 but less than 5 acres, or are part of a larger common plan of development that will disturb at least 1 but less than 5 acres, are also regulated under this general permit.
Construction activities that disturb less than 1 acre, and are not part of a larger common plan of development that would disturb 1 or more acres, are not required to obtain coverage under this general permit.

Oil and Gas Activities

The TPDES CGP does not authorize discharges from construction activities associated with the exploration, development, or production of oil or gas or geothermal resources, including construction associated with the transportation of crude oil or natural gas by pipeline. These discharges are not under the authority of the TCEQ. If coverage is required, operators of these construction activities may need to obtain permit coverage from the U.S. EPA and the Texas Railroad Commission.