Changes

The following maintenance procedures and preventative measures should be incorporated into a maintenance plan:  

The following maintenance procedures and preventative measures should be incorporated into a maintenance plan:  

[[File:Completed tree trench.PNG|thumb|400px|An example of a stormwater tree trench system located within the existing street median, Mississauga, ON. Central Parkway retrofit. (Source: STEP, 2016).<ref> https://cvc.ca/wp-content/uploads//2021/07/TechReport_CPW_Final.pdf</ref>]]

[[File:Completed tree trench.PNG|thumb|400px|An example of a stormwater tree trench system located within the existing street median, Mississauga, ON. Central Parkway retrofit. (Source: STEP, 2016).<ref> https://cvc.ca/wp-content/uploads//2021/07/TechReport_CPW_Final.pdf</ref>]]

*'''Surface Sweeping''': Sweeping should occur once or twice a year with a commercial vacuum sweeping unit to mitigate sediment accumulation and ensure continued porosity. Permeable pavement should   not be washed with high pressure water systems or compressed air units, because they will push particles deeper into the pavement.<ref name=manchester2002>Philadelphia Water Department (PWD). 2007. Philadelphia Stormwater Management Guidance Manual. Philadelphia </ref>

*'''Tree Maintenance''': Inspection and maintenance of all municipally-owned trees shall be conducted by municipal staff or its contractors after the warranty period of the construction contract. This work may include, frequent watering and fertilizing as trees begin to establish themselves in the feature, this is especially important during drought-like conditions. Proper tree pruning is also important throughout the life of the tree, but especially during the early life stages of trees to help limit the potential for detrimental deformations or growth habits. This will help reduce costs as the tree matures and attempts at correcting improper growth, or replacement of the tree entirely becomes more costly. Staff involved in inspection and maintenance of these features should be experienced with the designated planting plan, plant species identification, and weed removal and control methodologies enacted by the municipality.  

*'''Inlet Structures''': Drainage pipes and structures within or draining to the subsurface bedding beneath porous pavement should be cleaned out on regular intervals .<ref name=manchester2002/>

*'''Inlet Structures''': Drainage pipes and structures within or draining to the subsurface bedding beneath porous pavement should be cleaned out on regular intervals .<ref name=manchester2002/>

*'''Heavy Vehicles''': Trucks and other heavy vehicles can ground dirt into the porous surface and lead to clogging. These vehicles should be prevented from tracking or spilling dirt onto the pavement. Signage and training of facilities personnel is suggested. .<ref name=manchester2002/>

*'''Heavy Vehicles''': Trucks and other heavy vehicles can ground dirt into the porous surface and lead to clogging. These vehicles should be prevented from tracking or spilling dirt onto the pavement. Signage and training of facilities personnel is suggested. .<ref name=manchester2002/>