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Q-2, r. 9.01 - Design code of a storm water management system eligible for a declaration of compliance
Section 49
Disposition versions
49. Failing the use of a computer model, the runoff volume to be treated to reduce suspended matters and that drains to a storm water management work whose design is based on a runoff volume is established using equation 3-14:
Equation 3-14: Vquality = 25 × 0.9 × Aimp × 10
where:
| Vquality | = | Runoff volume referred to in sections 48 and 49 (m3); | |
| 25 | = | Quality control rain level (mm); | |
| 0.9 | = | Runoff coefficient; | |
| Aimp | = | Sum of impervious surfaces drained to the storm water management work, including surfaces drained indirectly (ha); | |
| 10 | = | Conversion coefficient for the units. |
In force: 2020-12-31
49. Failing the use of a computer model, the runoff volume to be treated to reduce suspended matters and that drains to a storm water management work whose design is based on a runoff volume is established using equation 3-14:
Equation 3-14: Vquality = 25 × 0.9 × Aimp × 10
where:
| Vquality | = | Runoff volume referred to in sections 48 and 49 (m3); | |
| 25 | = | Quality control rain level (mm); | |
| 0.9 | = | Runoff coefficient; | |
| Aimp | = | Sum of impervious surfaces drained to the storm water management work, including surfaces drained indirectly (ha); | |
| 10 | = | Conversion coefficient for the units. |
