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→Inspection and Maintenance
Inspections will need to occur within 24 hours of significant rain events (>25 mm) to ensure the specified ponding depths and drain times are being achieved as per design specifications, standing water does not persist for more than 24 hours, and there are no leaks occurring due to damage to the roof membrane or as a result of other underlying roof conditions (NYCDEP, 2012a).<ref> New York City Department of Environmental Protection (NYCDEP). 2012. NYC Green Infrastructure Plan: 2012 Green Infrastructure Pilot Monitoring Report. Retrieved from: https://www1.nyc.gov/assets/dep/downloads/pdf/water/stormwater/green-infrastructure/2012-green-infrastructure-pilot-monitoring-report.pdf</ref>.
Inspections will need to occur within 24 hours of significant rain events (>25 mm) to ensure the specified ponding depths and drain times are being achieved as per design specifications, standing water does not persist for more than 24 hours, and there are no leaks occurring due to damage to the roof membrane or as a result of other underlying roof conditions (NYCDEP, 2012a).<ref> New York City Department of Environmental Protection (NYCDEP). 2012. NYC Green Infrastructure Plan: 2012 Green Infrastructure Pilot Monitoring Report. Retrieved from: https://www1.nyc.gov/assets/dep/downloads/pdf/water/stormwater/green-infrastructure/2012-green-infrastructure-pilot-monitoring-report.pdf</ref>.
{| class="wikitable"
|+ '''Recommended Inspection Activities for Blue Roofs''' (NYCDEP, 2012b)<ref> New York City Department of Environmental Protection (NYCDEP). 2012. Guidelines for the Design and Construction of storm water Management Systems. Retrieved from:
https://www1.nyc.gov/assets/dep/downloads/pdf/water/stormwater/stormwater-design-construction-guidelines-2012-final.pdf.</ref>
|-
!Schedule
!Activity
|-
|style="text-align:left;"|
Semi-annually under dry conditions
|style="text-align:left;"|
*Inspect roof drain inlets to ensure in good condition.
*Inspect drain inlet screens/covers and scuppers to ensure in good condition.
*Inspect roof membrane to check for signs of deterioration.
|-
|style="text-align:left;"|
Quarterly and after rain events
|style="text-align:left;"|
*Inspect roof to verify achievement of water depth and drain time requirements.
*Inspect secondary drainage inlets for blockage or debris.
|-
|style="text-align:left;"|
After snow/icing events
|style="text-align:left;"|
*Check roof drain inlets for blockage caused by buildup of snow or ice.
|}
Maintenance activities for blue roofs should focus on preventing [[clogging]] of drainage [[inlets]] and deterioration of the roof membrane (NYCDEP, 2012b)<ref> New York City Department of Environmental Protection (NYCDEP). 2012. Guidelines for the Design and Construction of storm water Management Systems. Retrieved from:
Maintenance activities for blue roofs should focus on preventing [[clogging]] of drainage [[inlets]] and deterioration of the roof membrane (NYCDEP, 2012b)<ref> New York City Department of Environmental Protection (NYCDEP). 2012. Guidelines for the Design and Construction of storm water Management Systems. Retrieved from:
https://www1.nyc.gov/assets/dep/downloads/pdf/water/stormwater/stormwater-design-construction-guidelines-2012-final.pdf.</ref>. In addition, adequate maintenance of the secondary drainage system is essential to ensure its performance in the event of a failure of the roofing system. The rooftop system and membrane should be evaluated every 20 years to assess the need for replacement. Maintenance access points should be clearly identified in the plan for the system. Special training required to perform specific tasks is required for the appropriate person/consultant (entity) responsible for completing the specific maintenance activity.
https://www1.nyc.gov/assets/dep/downloads/pdf/water/stormwater/stormwater-design-construction-guidelines-2012-final.pdf.</ref>. In addition, adequate maintenance of the secondary drainage system is essential to ensure its performance in the event of a failure of the roofing system. The rooftop system and membrane should be evaluated every 20 years to assess the need for replacement. Maintenance access points should be clearly identified in the plan for the system. Special training required to perform specific tasks is required for the appropriate person/consultant (entity) responsible for completing the specific maintenance activity.
{| class="wikitable"
|+ '''Recommended Maintenance Activities for Blue Roofs''' (NYCDEP, 2012b)<ref> New York City Department of Environmental Protection (NYCDEP). 2012. Guidelines for the Design and Construction of storm water Management Systems. Retrieved from:
https://www1.nyc.gov/assets/dep/downloads/pdf/water/stormwater/stormwater-design-construction-guidelines-2012-final.pdf.</ref>
|-
!Schedule
!Activity
!Equipment Needed
|-
|style="text-align:left;"|
During inspections or as needed to ensure performance
|style="text-align:left;"|
*Remove debris from drainage inlets and inlet screens to prevent clogging.
*Remove debris from secondary drainage inlets/scuppers.
|style="text-align:left;"|
*Shovel
|-
|style="text-align:left;"|
Winter considerations
|style="text-align:left;"|
*Break up ice formations around inlets
|style="text-align:left;"|
*Ice pick, small pick-axe, or other equivalent/relevant tool
|}
==Blue roofs in the treatment train==
==Blue roofs in the treatment train==