Chapter 321 - CONTROL OF CERTAIN ACTIVITIES BY RULE
- Subchapter A - BOAT SEWAGE DISPOSAL (§§ 321.1 — 321.11)
- Subchapter B - CONCENTRATED ANIMAL FEEDING OPERATIONS (§§ 321.31 — 321.47)
- Subchapter C - MEAT PROCESSING (§§ 321.51 — 321.57)
- Subchapter D - SAND AND GRAVEL WASHING (§§ 321.61 — 321.66)
- Subchapter E - [Repealed] SURFACE COAL MINING, PREPARATION, AND RECLAMATION ACTIVITIES (§ 321.71)
- Subchapter F - [Repealed] SHRIMP INDUSTRY (§ 321.91)
- Subchapter I - ADDITIONAL CHARACTERISTICS AND CONDITIONS OF GENERAL PERMITS AND FOR CONTROLLING CERTAIN ACTIVITIES BY RULE (§ 321.141)
- Subchapter L - [Repealed] DISCHARGES TO SURFACE WATERS FROM MOTOR VEHICLES CLEANING FACILITIES (§ 321.211)
- Subchapter N - HANDLING OF WASTES FROM COMMERCIAL FACILITIES ENGAGED IN LIVERSTOCK TRAILER CLEANING (§§ 321.251 — 321.259)
- Subchapter P - RECLAIMED WATER PRODUCTION FACILITIES (§§ 321.301 — 321.325)