Line 12: |
Line 12: |
| |- | | |- |
| |colspan="2"|(Impervious drainage/treatment) area | | |colspan="2"|(Impervious drainage/treatment) area |
| |5:1-20:1, 10:1 recommended || || 5:1-20:1, 10:1 recommended ||CDA < 5 acres||CDA < 2 acres (T), < 5 acres (B)||< 2 acres || Max. load of 10:1 for infiltration systems (not specific to LID type)|| CDA: max. 15000 ft2| | | |5:1-20:1, 10:1 recommended || || 5:1-20:1, 10:1 recommended ||CDA < 5 acres||CDA < 2 acres (T), < 5 acres (B)||< 2 acres || Max. load of 10:1 for infiltration systems (not specific to LID type)||CDA: max. 15000 ft2|| |
| |- | | |- |
| |colspan="2"| Natural Slope (%) || < 15 || || < 15 || || || || || | | |colspan="2"| Natural Slope (%) || < 15 || || < 15 || || || || || |
Line 36: |
Line 36: |
| | colspan="2"| Bottom widh of excavations (mm) || 600-2400 || 600-2400 || 600-2400 || || || || || | | | colspan="2"| Bottom widh of excavations (mm) || 600-2400 || 600-2400 || 600-2400 || || || || || |
| |- | | |- |
| | colspan="2"|Minimum depth of excavations under concrete laneway (mm) || || || || || || || 3000 | | | | colspan="2"|Minimum depth of excavations under concrete laneway (mm) || || 3000|| || || || || || |
| |- | | |- |
| | colspan="2"| length of time for draining after storm event (>25mm) || || || || || || max. 72 hr || || max.72 hr, 48 recommended | | | | colspan="2"| length of time for draining after storm event (>25mm) || max. 72 hr || || max.72 hr, 48 recommended || || || || || |
| |- | | |- |
| | colspan="2"| Depth to high water table (m) || || || || || || 1 || || 1 | | | | colspan="2"| Depth to high water table (m) || 1 || || 1 || || || || || | |
| |- | | |- |
| | colspan="2"|Sand layer depth (mm) || || || || || || || 150-300 || | | | colspan="2"|Sand layer depth (mm) || | ||150-300 || || || || || || | |
| |- | | |- |
| | colspan="2"|Subdrains || || || || Inlet pipes (mm) || || || 100-200 || | | | colspan="2"|Subdrains Inlet pipes (mm) || || 100-200 || || || || || || | |
| |- | | |- |
| | colspan="2"|Overflow ( if infiltration rate ) || || || || || || || < 15 mm/hr || | | | colspan="2"|Overflow ( if infiltration rate ) || || < 15 mm/hr || || || || || || | |
| |- | | |- |
| | colspan="2"|Facilties reciving road runoff are not located within time of travel || || || || || || 2 || || 2 | | | | colspan="2"|Facilties reciving road runoff are not located within time of travel wellhead protection areas, year || 2 || || 2 || || || || || | |
| |-
| | |
| | colspan="2"|wellhead protection areas, year || || || || || || || || |
| |
| |} | | |} |