Municipal Separate Storm Sewer System (MS4) Permits
TCEQ Presentation: New Phase II MS4 General Permit - 2014
Phase Is are generally covered by individual permits, which require medium and large MS4s serving a population of 100,000 (based on the 1990 Census) or more to obtain permit coverage for their stormwater discharges under the Texas Pollutant Discharge and Elimination System (TPDES).
Phase II (TXR040000)
Phase IIs are generally covered by a general permit, which requires small MS4s in urbanized areas (UAs), as well as small MS4s outside the urbanized areas that are designated by the Texas Commission on Environmental Quality (TCEQ), to obtain TPDES permit coverage for their stormwater discharges. TCEQ is in the process of renewing this general permit, which expires on August 12, 2012.
Construction General Permit (TXR150000)
This permit authorizes the discharge of stormwater associated with construction activitiy. The TCEQ is in the process of renewing this general permit, which expires March 5, 2013.
Industrial General Permit (TXR050000)
This permit authorizes the discharge of stormwater associated with industrial activity, and was reissued July 22, 2011 and became effective August 14, 2011. Eligible activities were required to submit an NOI or no exposure certificate for coverage under this permit.
For more information about these permits, visit TCEQ's stormwater permits site.
U.S. Environmental Protection Agency Stormwater Rulemaking
The U.S. EPA has initiated a national rulemaking to establish a program to reduce stormwater discharges from newly developed and redeveloped sites and make other regulatory improvements to strengthen its stormwater program. For more information, visit EPA's stormwater rulemaking site.