Line 8: |
Line 8: |
|
| |
|
| |- | | |- |
| |Setback from building Foundation(m)|| || 4 || || 4 || || || Max. load of 10:1 for infiltration systems (not specific to LID type) || || | | |colspan="2" |Setback from building Foundation(m)|| 4 || || 4 || || || Max. load of 10:1 for infiltration systems (not specific to LID type) || || |
| |- | | |- |
| | (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 || || CDA: max. 15000 ft2|| | | |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 || || CDA: max. 15000 ft2| |
| |- | | |- |
| | Natural Slope (%) || || || || || || < 15 || || < 15 || || || || || | | |colspan="2"| Natural Slope (%) || < 15 || || < 15 || || || || || |
| |- | | |- |
| | A capped vertical sandpipe, perfored instaled to || || || || || || 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 || || || || || |
| | |
| |- | | |- |
| | the bottom of the facility to monitor drainage time || || || || || || || || || || || || || | | | colspan="2"|Filter Mdia |
| |- | | |- |
| | Filter Mdia || 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 |
| |- | | |- |
| | || Void space(%) || || || || || 30-40 || 30-40 || 30-40 || || || || || | | | || Void space(%) || 30-40 || 30-40 || 30-40 || || || || || |
| |- | | |- |
| | || Granular material (clear stone)(mm) || || || || || 50 || 50 || 50 || || || || || | | | || Granular material (clear stone)(mm) || 50 || 50 || 50 || || || || || |
| |- | | |- |
| | || Geotextile, around the stone reservoir || || || || || min. 300 mm || 300 || min. 300 mm || || || || || | | | || Geotextile, around the stone reservoirwith an overlap at the top || min. 300 mm || 300 || min. 300 mm || || || || || |
| | |
| |- | | |- |
| | || with an overlap at the top || || || || || || || || || || || || | | | colspan="2"| Bottom widh of excavations (mm) || 600-2400 || 600-2400 || 600-2400 || || || || || |
| |- | | |- |
| | Bottom widh of excavations (mm) || || || || || || 600-2400 || 600-2400 || 600-2400 || || || || || | | | colspan="2"|Minimum depth of excavations under concrete laneway (mm) || || || || || || || 3000 | |
| |- | | |- |
| | 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 | |
| |- | | |- |
| | 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 | |
| |- | | |- |
| | Depth to high water table (m) || || || || || || 1 || || 1 || || || || || | | | colspan="2"|Sand layer depth (mm) || || || || || || || 150-300 || |
| |- | | |- |
| | Sand layer depth (mm) || || || || || || || 150-300 || || || || || ||
| | | colspan="2"|Subdrains || || || || Inlet pipes (mm) || || || 100-200 || |
| |- | | |- |
| | Subdrains || || || || Inlet pipes (mm) || || || 100-200 || || || || || || | | | colspan="2"|Overflow ( if infiltration rate ) || || || || || || || < 15 mm/hr || |
| |- | | |- |
| | Overflow ( if infiltration rate ) || || || || || || || < 15 mm/hr || || || || || ||
| | | colspan="2"|Facilties reciving road runoff are not located within time of travel || || || || || || 2 || || 2 | |
| |- | | |- |
| | Facilties reciving road runoff are not located within time of travel || || || || || || 2 || || 2 || || || || || | | | colspan="2"|wellhead protection areas, year || || || || || || || || | |
| |-
| |
| | wellhead protection areas, year || || || || || || || || || || || || || | |
| |} | | |} |