Part 8 - Sewage Systems

8.1. General 8.1.1. Scope ............................................................................. 3 8.1.2. Application .................................................................... 3 8.1.3. Limitations .................................................................... 3

8.2. Design Standards 8.2.1. General Requirements ................................................. 4 8.2.2. Treatment and Holding Tanks ..................................... 10

8.3. Class 1 Sewage Systems 8.3.1. General Requirements ................................................. 12 8.3.2. Superstructure Requirements..................................... 12 8.3.3. Earth Pit Privy ............................................................... 13 8.3.4. Privy Vaults and Pail Privy .......................................... 13 8.3.5. Portable Privy ............................................................... 13

8.4. Class 2 Sewage Systems 8.4.1. General Requirements ................................................. 14 8.4.2. Design and Construction Requirements ................... 14

8.5. Class 3 Sewage Systems 8.5.1. General Requirements ................................................. 15 8.5.2. Design and Construction Requirements ................... 15

8.6. Class 4 Sewage Systems 8.6.1. General Requirements ................................................. 16 8.6.2. Treatment Units ............................................................ 16

8.7. Leaching Beds 8.7.1. General Requirements ................................................. 17 8.7.2. Design and Construction Requirements ................... 18 8.7.3. Absorption Trench Construction ................................ 19 8.7.4. Fill Based Absorption Trenches ................................. 23 8.7.5. Filter Beds ..................................................................... 24 8.7.6. Shallow Buried Trench ................................................ 25 8.7.7. Type A Dispersal Beds ................................................ 26 8.7.8. Type B Dispersal Beds ................................................ 28

8.8. Class 5 Sewage Systems 8.8.1. Application .................................................................... 29 8.8.2. General Requirements ................................................. 30

8.9. Operation and Maintenance 8.9.1. General .......................................................................... 30 8.9.2. Operation ...................................................................... 31 8.9.3. Maintenance .................................................................. 32