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Q-2, r. 22 - Regulation respecting waste water disposal systems for isolated dwellings
Section 87.23
Disposition versions
87.23. Trench length: The minimum total length of the absorption trenches for an isolated dwelling must comply with the following standards, according to the permeability of the disposal site and the number of bedrooms:
___________________________________________________________
Number of Total length of trenches (metres)
bedrooms
___________________________________________________________
Disposal Disposal Disposal
site is of site is of site is of
high permeable permeable of
permeability soil low permeability
soil soil
___________________________________________________________
1 12 24 58
___________________________________________________________
2 18 36 90
___________________________________________________________
3 27 54 135
___________________________________________________________
4 36 72 180
___________________________________________________________
5 45 90 225
___________________________________________________________
6 54 108 270
___________________________________________________________
Number of Total length of trenches (metres)
bedrooms
___________________________________________________________
Disposal Disposal Disposal
site is of site is of site is of
high permeable permeable of
permeability soil low permeability
soil soil
___________________________________________________________
1 12 24 58
___________________________________________________________
2 18 36 90
___________________________________________________________
3 27 54 135
___________________________________________________________
4 36 72 180
___________________________________________________________
5 45 90 225
___________________________________________________________
6 54 108 270
___________________________________________________________
In other cases, the minimum total length of absorption trenches must comply with the following standards, according to the permeability of the disposal site and the total daily flow:
___________________________________________________________
Total daily Total length of trenches (metres)
flow (litres)
___________________________________________________________
Disposal Disposal Disposal
site is of site is of site is of
high permeable permeable of
permeability soil low permeability
soil soil
___________________________________________________________
0 to 540 12 24 58
___________________________________________________________
541 to 1080 18 36 90
___________________________________________________________
1081 to 1620 27 54 135
___________________________________________________________
1621 to 2160 36 72 180
___________________________________________________________
2161 to 2700 45 90 225
___________________________________________________________
2701 to 3240 54 108 270
___________________________________________________________
Total daily Total length of trenches (metres)
flow (litres)
___________________________________________________________
Disposal Disposal Disposal
site is of site is of site is of
high permeable permeable of
permeability soil low permeability
soil soil
___________________________________________________________
0 to 540 12 24 58
___________________________________________________________
541 to 1080 18 36 90
___________________________________________________________
1081 to 1620 27 54 135
___________________________________________________________
1621 to 2160 36 72 180
___________________________________________________________
2161 to 2700 45 90 225
___________________________________________________________
2701 to 3240 54 108 270
___________________________________________________________
87.23. Trench length: The minimum total length of the absorption trenches for an isolated dwelling must comply with the following standards, according to the permeability of the disposal site and the number of bedrooms:
___________________________________________________________
Number of Total length of trenches (metres)
bedrooms
___________________________________________________________
Disposal Disposal Disposal
site is of site is of site is of
high permeable permeable of
permeability soil low permeability
soil soil
___________________________________________________________
1 12 24 58
___________________________________________________________
2 18 36 90
___________________________________________________________
3 27 54 135
___________________________________________________________
4 36 72 180
___________________________________________________________
5 45 90 225
___________________________________________________________
6 54 108 270
___________________________________________________________
Number of Total length of trenches (metres)
bedrooms
___________________________________________________________
Disposal Disposal Disposal
site is of site is of site is of
high permeable permeable of
permeability soil low permeability
soil soil
___________________________________________________________
1 12 24 58
___________________________________________________________
2 18 36 90
___________________________________________________________
3 27 54 135
___________________________________________________________
4 36 72 180
___________________________________________________________
5 45 90 225
___________________________________________________________
6 54 108 270
___________________________________________________________
The minimum total length of absorption trenches for another building must comply with the following standards, according to the permeability of the disposal site and the total daily flow:
___________________________________________________________
Total daily Total length of trenches (metres)
flow (litres)
___________________________________________________________
Disposal Disposal Disposal
site is of site is of site is of
high permeable permeable of
permeability soil low permeability
soil soil
___________________________________________________________
0 to 540 12 24 58
___________________________________________________________
541 to 1080 18 36 90
___________________________________________________________
1081 to 1620 27 54 135
___________________________________________________________
1621 to 2160 36 72 180
___________________________________________________________
2161 to 2700 45 90 225
___________________________________________________________
2701 to 3240 54 108 270
___________________________________________________________
Total daily Total length of trenches (metres)
flow (litres)
___________________________________________________________
Disposal Disposal Disposal
site is of site is of site is of
high permeable permeable of
permeability soil low permeability
soil soil
___________________________________________________________
0 to 540 12 24 58
___________________________________________________________
541 to 1080 18 36 90
___________________________________________________________
1081 to 1620 27 54 135
___________________________________________________________
1621 to 2160 36 72 180
___________________________________________________________
2161 to 2700 45 90 225
___________________________________________________________
2701 to 3240 54 108 270
___________________________________________________________
