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→Storage reservoir
==Storage reservoir==
==Storage reservoir==
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.
'''Construction steps:'''
#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.
'''Key Inspection Points:'''
*Material arrival to the site:
**Check chain of custody
**Verify it meets specifications as per design
**Verify no debris or fines within the aggregate (it’s a washed stone)
*Granular material should be 19 - 50 mm clear stone or as per design. See [[Aggregates]] for further details.
*Installed aggregate is at the correct elevation as per design.
'''Mistakes to Avoid:'''
*Accepting material that does not meet design requirements and specifications.
*Installing material with heavy equipment from the inside of the LID facility
*Installing frozen aggregate. Do not install frozen aggregate
*Leaving heavy equipment (excavator) for long periods of time within the LID facility.
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>
==Permeable pavement sub-base and base course==
==Permeable pavement sub-base and base course==