§ 51.003 ABBREVIATIONS.
   For the purpose of this chapter, the following abbreviations shall apply unless the context clearly indicates or requires a different meaning.
   BMP. Best management practice.
   BMR. Baseline monitoring report.
   BOD. Biochemical oxygen demand.
   C.F.R. Code of Federal Regulations.
   CIU. Categorical industrial user.
   COD. Chemical oxygen demand.
   EPA. U.S. Environmental Protection Agency.
   gpd. Gallons per day.
   IU. Industrial user.
   mg/l. Milligrams per liter.
   NAICS. North American Industrial Classification System.
   NPDES. National Pollutant Discharge Elimination System.
   NSCIU. Non-significant categorical industrial user.
   POTW. Publicly owned treatment works.
   RCRA. Resource Conservation and Recovery Act.
   SIC. Standard industrial classification.
   SIU. Significant industrial user.
   SNC. Significant noncompliance.
   TCEQ. Texas Commission on Environmental Quality.
   TPDES. Texas Pollutant Discharge Elimination System.
   TRA. Trinity River Authority.
   TSS. Total suspended solids.
   TTO. Total toxic organics.
   U.S.C. United States Code.
(Ord. 317, passed 10-16-1995; Am. Ord. O-21-932, passed 3-1-2021)