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| The storage reservoir layer holds and directs the stormwater into the underlying/native soils. The LID facilities, if applicable, should be filled with uniformly graded, washed stone (20 mm – 50 mm) that provides 30 to 40% void space. | | The storage reservoir layer holds and directs the stormwater into the underlying/native soils. The LID facilities, if applicable, should be filled with uniformly graded, washed stone (20 mm – 50 mm) that provides 30 to 40% void space. |
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| ‘’’Construction steps:’’’
| | '''Construction steps:''' |
| #Backfill material from outside of the LID facility to avoid compaction and sediment entering the facilities. Use a slinger truck if possible. | | #Backfill material from outside of the LID facility to avoid compaction and sediment entering the facilities. Use a slinger truck if possible. |
| #Place the material to the elevation and thickness as per the design specifications. | | #Place the material to the elevation and thickness as per the design specifications. |
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| ‘’’Key Inspection Points:’’’
| | '''Key Inspection Points:''' |
| *Material arrival to the site: | | *Material arrival to the site: |
| **Check chain of custody | | **Check chain of custody |
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| *Installed aggregate is at the correct elevation as per design. | | *Installed aggregate is at the correct elevation as per design. |
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| ‘’’Mistakes to Avoid:’’’
| | '''Mistakes to Avoid:''' |
| *Accepting material that does not meet design requirements and specifications. | | *Accepting material that does not meet design requirements and specifications. |
| *Installing material with heavy equipment from the inside of the LID facility | | *Installing material with heavy equipment from the inside of the LID facility |
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| *Leaving heavy equipment (excavator) for long periods of time within the LID facility. | | *Leaving heavy equipment (excavator) for long periods of time within the LID facility. |
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| For more information on the storage reservoir, see the page: [[Reservoir aggregate]]. | | For more guidance on materials specifications, refer to [[Aggregates]], [[OPSS aggregates]] and ([https://www.roadauthority.com/Standards/?id=a28fdfaf-3bf8-4679-81ca-4e44b2263cf8 Ontario Provincial Standards, 2013]) <ref>Ontario Provincial Standards. 2013. OPSS.PROV.10101 Aggregates - Base, Subbase Select Subgrade, and Backfill Material. https://www.roadauthority.com/Standards/?id=a28fdfaf-3bf8-4679-81ca-4e44b2263cf8</ref> |