Q-2, r. 9.01 - Design code of a storm water management system eligible for a declaration of compliance

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46. To determine the suspended matter reduction performance of 2 storm water management works of a different nature installed in series, equation 3-12 must be used. Note that no reduction performance is recognized for a pretreatment work unless such a work is listed in Table 3.17.
Equation 3-12: P = A + B – [(A × B)/100]
where:
P=Suspended matter reduction performance for 2 storm water management works installed in series (%); minimum value of 80%;
A=Reduction performance of the storm water management work situated upstream in accordance with Table 3.17 (%);
B=Reduction performance of the storm water management work situated downstream in accordance with Table 3.17 (%).
O.C. 871-2020, s. 46.
In force: 2020-12-31
46. To determine the suspended matter reduction performance of 2 storm water management works of a different nature installed in series, equation 3-12 must be used. Note that no reduction performance is recognized for a pretreatment work unless such a work is listed in Table 3.17.
Equation 3-12: P = A + B – [(A × B)/100]
where:
P=Suspended matter reduction performance for 2 storm water management works installed in series (%); minimum value of 80%;
A=Reduction performance of the storm water management work situated upstream in accordance with Table 3.17 (%);
B=Reduction performance of the storm water management work situated downstream in accordance with Table 3.17 (%).
O.C. 871-2020, s. 46.