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Q-2, r. 9.01 - Design code of a storm water management system eligible for a declaration of compliance
Section 145
Disposition versions
145. The minimum travel time of the water in the ditch, τ, established using equation 4-18, must be equal to or greater than 600 seconds.
The minimum travel time of the water is the average time that the water takes to flow into the grassed ditch from the last intake of the grassed ditch to the end of the ditch.
Equation 4-18: τ = L/V
where:
| τ | = | Minimum travel time of the water; | |
| L | = | Length of the grassed ditch, from the last water intake to the end of the ditch (m); | |
| V | = | Average water flow speed (m/s); |
In force: 2020-12-31
145. The minimum travel time of the water in the ditch, τ, established using equation 4-18, must be equal to or greater than 600 seconds.
The minimum travel time of the water is the average time that the water takes to flow into the grassed ditch from the last intake of the grassed ditch to the end of the ditch.
Equation 4-18: τ = L/V
where:
| τ | = | Minimum travel time of the water; | |
| L | = | Length of the grassed ditch, from the last water intake to the end of the ditch (m); | |
| V | = | Average water flow speed (m/s); |
