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

Section 156 Disposition versions

2020-12-31

156. The annual suspended matter reduction performance for a given flow is established

(1)  by multiplying the suspended matter reduction performance associated with the loading rates corresponding to 25%, 50%, 75%, 100% and 125% of the given loading rate by the weighting factors indicated in Table 4.8; and

(2)  by adding the products obtained in subparagraph 1.

For the purpose of establishing the suspended matter reduction performance provided for in the first paragraph,

(1)  the suspended matter reduction performance values must come from experimental results at the end of the verification process performed under paragraph 1 of section 150, without extrapolation of the results;

(2)  the suspended matter reduction performance must be 0% for loading rates greater than those tested; and

(3)  the suspended matter reduction performance for loading rates less than those tested must be capped to the performance measured for the smallest loading rate tested.

Table 4.8 Weighting factors

Loading rate %	Weighting factor
25%	0.35
50%	0.25
75%	0.20
100%	0.10
125%	0.10

O.C. 871-2020, s. 156.

Not in force

In force: 2020-12-31

156. The annual suspended matter reduction performance for a given flow is established

(1)  by multiplying the suspended matter reduction performance associated with the loading rates corresponding to 25%, 50%, 75%, 100% and 125% of the given loading rate by the weighting factors indicated in Table 4.8; and

(2)  by adding the products obtained in subparagraph 1.

For the purpose of establishing the suspended matter reduction performance provided for in the first paragraph,

(1)  the suspended matter reduction performance values must come from experimental results at the end of the verification process performed under paragraph 1 of section 150, without extrapolation of the results;

(2)  the suspended matter reduction performance must be 0% for loading rates greater than those tested; and

(3)  the suspended matter reduction performance for loading rates less than those tested must be capped to the performance measured for the smallest loading rate tested.

Table 4.8 Weighting factors

Loading rate %	Weighting factor
25%	0.35
50%	0.25
75%	0.20
100%	0.10
125%	0.10

O.C. 871-2020, s. 156.