Changes

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|colspan="2" |Setback from building Foundation(m)

|colspan="2" |'''Setback from building Foundation(m)'''

| 4 ||  || 4 ||  ||  ||  ||  ||

| 4 ||  || 4 ||  ||  ||  ||  ||

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|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||

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|colspan="2"|  Natural Slope (%) || < 15 ||  || < 15 ||  ||  ||  ||  ||  

|colspan="2"|  '''Natural Slope (%)''' || < 15 ||  || < 15 ||  ||  ||  ||  ||  

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| 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 ||  ||  ||  ||  ||  

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| colspan="2"|Filter Mdia  

| colspan="2"|'''Filter Mdia'''

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!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

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!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 ||  ||  ||  ||  ||  

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!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 ||  ||  ||  ||  ||  

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!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 ||  ||  ||  ||  ||  

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| 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 ||  ||  ||  ||  ||  

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| colspan="2"|Minimum depth of excavations under concrete laneway (mm) ||  ||  3000||  ||  ||  ||  || ||

| colspan="2"|'''Minimum depth of excavations under concrete laneway (mm)''' ||  ||  3000||  ||  ||  ||  || ||

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| 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 ||  ||    ||    ||    ||

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| colspan="2"| Depth to high water table (m) || 1 ||  || 1 ||  ||    ||  ||  ||  |     

| colspan="2"| '''Depth to high water table (m)''' || 1 ||  || 1 ||  ||    ||  ||  ||  |     

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|  colspan="2"|Sand layer depth (mm) || |  ||150-300 ||  ||  ||  ||  ||  ||  |

|  colspan="2"|'''Sand layer depth (mm)''' || |  ||150-300 ||  ||  ||  ||  ||  ||  |

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|  colspan="2"|Subdrains Inlet pipes (mm) ||  || 100-200 ||  ||  ||  ||  ||  ||  |

|  colspan="2"|'''Subdrains Inlet pipes (mm)''' ||  || 100-200 ||  ||  ||  ||  ||  ||  |

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| colspan="2"|Overflow ( if infiltration rate ) ||  || < 15 mm/hr ||  ||  ||  ||  ||  ||  |  

| colspan="2"|'''Overflow ( if infiltration rate )''' ||  || < 15 mm/hr ||  ||  ||  ||  ||  ||  |  

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|  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 ||  ||  ||  ||  ||  |

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