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Q-2, r. 9.01 - Design code of a storm water management system eligible for a declaration of compliance
Section 147
Disposition versions
147. Each square metre of the surface of the grassed ditch must be covered 90% by shoots at least 120 mm high after a 7-week or more growth within the growth periods indicated in Table 4.6, according to the hardiness zone determined by Natural Resources Canada.
Table 4.6 Growth period according to hardiness zone
| Hardiness zone | Growth period |
| 2a and 2b | From 30 June to 21 August |
| 3a and 3b | From 15 June to 30 August |
| 4a and 4b | From 21 May to 10 September |
| 5a and 5b | From 10 May to 21 September |
In force: 2020-12-31
147. Each square metre of the surface of the grassed ditch must be covered 90% by shoots at least 120 mm high after a 7-week or more growth within the growth periods indicated in Table 4.6, according to the hardiness zone determined by Natural Resources Canada.
Table 4.6 Growth period according to hardiness zone
| Hardiness zone | Growth period |
| 2a and 2b | From 30 June to 21 August |
| 3a and 3b | From 15 June to 30 August |
| 4a and 4b | From 21 May to 10 September |
| 5a and 5b | From 10 May to 21 September |
