Line 8: |
Line 8: |
|
| |
|
| |- | | |- |
| |colspan="2" |Setback from building Foundation(m) | | |colspan="2" |'''Setback from building Foundation(m)''' |
| | 4 || || 4 || || || || || | | | 4 || || 4 || || || || || |
| |- | | |- |
| |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 || || || || || |
| |- | | |- |
| | colspan="2"|A capped vertical sandpipe, perfored instaled to the bottom of the facility to monitor drainage time || 100-150 mm || || 100-150 mm || || || || || | | | colspan="2"|'''A capped vertical sandpipe, perfored instaled to the bottom of the facility to monitor drainage time''' || 100-150 mm || || 100-150 mm || || || || || |
|
| |
|
| |- | | |- |
| | colspan="2"|Filter Mdia | | | colspan="2"|'''Filter Mdia''' |
| |- | | |- |
| !colspan="1" style="background:white; color:black"|
| | |colspan="2" style="text-align: right;|Stone Resvoir || || || || 1.5" to 3" stone dia., 2" pea gravel above 6" sand below || 1.5"-3.5" stone dia. For stone layer, 3" layer of washed river stone, or No. 8 or 89 stone above, 6-8 " of sand below || Stone 1.5"-3.5" || || Drain rock 3/4"-2.5 " washed open graded aggregate |
| ||Stone Resvoir || || || || 1.5" to 3" stone dia., 2" pea gravel above 6" sand below || 1.5"-3.5" stone dia. For stone layer, 3" layer of washed river stone, or No. 8 or 89 stone above, 6-8 " of sand below || Stone 1.5"-3.5" || || Drain rock 3/4"-2.5 " washed open graded aggregate
| |
| |- | | |- |
| !colspan="1" style="background:white; color:black"|
| | |colspan="2" style="text-align: right;| Void space(%) || 30-40 || 30-40 || 30-40 || || || || || |
| || Void space(%) || 30-40 || 30-40 || 30-40 || || || || ||
| |
| |- | | |- |
| !colspan="1" style="background:white; color:black"|
| | |colspan="2" style="text-align: right;| Granular material (clear stone)(mm) || 50 || 50 || 50 || || || || || |
| || Granular material (clear stone)(mm) || 50 || 50 || 50 || || || || ||
| |
| |- | | |- |
| !colspan="1" style="background:white; color:black"|
| | |colspan="2" style="text-align: right;|Geotextile around the stone reservoirwith an overlap at the top || min. 300 mm || 300 || min. 300 mm || || || || || |
| || Geotextile around the stone reservoirwith an overlap at the top || min. 300 mm || 300 || min. 300 mm || || || || ||
| |
|
| |
|
| |- | | |- |
| | 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 wellhead protection areas, year || 2 || || 2 || || || || || | | | | colspan="2"|'''Facilties reciving road runoff are not located within time of travel wellhead protection areas, year''' || 2 || || 2 || || || || || | |
|
| |
|
| |} | | |} |