Scope of Authorization. The TCEQ is authorized to administer NPDES permitting, compliance monitoring and enforcement activities, NPDES pretreatment activities, and NPDES sewage sludge program activities in Texas. This authority applies on land within the State of Texas and extends 3.0 statute miles1 offshore into the Gulf of Mexico. TCEQ does not have NPDES authority for discharges from oil and gas facilities classified by SIC codes 1311, 1321, 1381, 1382, 1389, 4922, and 4925 or discharges located on Indian Country (federally established Indian reservations, etc.). 1 A statute mile is used for measurements of distance on land. (1 statute mile = 5,280 feet)
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