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→Continuous Monitoring
*[https://www3.epa.gov/npdes/pubs/stormwaterinthecommunity.pdf Center for Watershed Protection, Managing Stormwater Post-Construction Guide, BMP Performance Verification Tool (Tool 8) Appendix A] (CWP, 2008)<ref>Center for Watershed Protection (CWP). 2008. Managing Stormwater in Your Community – A Guide for Building and Effective Post-Construction Program. U.S. EPA Publication No: 833-R08-001. Ellicott City, MD. EPA Publication No: 833-R-08-001. https://www3.epa.gov/npdes/pubs/stormwaterinthecommunity.pdf</ref>
*[https://www3.epa.gov/npdes/pubs/stormwaterinthecommunity.pdf Center for Watershed Protection, Managing Stormwater Post-Construction Guide, BMP Performance Verification Tool (Tool 8) Appendix A] (CWP, 2008)<ref>Center for Watershed Protection (CWP). 2008. Managing Stormwater in Your Community – A Guide for Building and Effective Post-Construction Program. U.S. EPA Publication No: 833-R08-001. Ellicott City, MD. EPA Publication No: 833-R-08-001. https://www3.epa.gov/npdes/pubs/stormwaterinthecommunity.pdf</ref>
*[http://archive.phillywatersheds.org/ltcpu/GCCW%20Comprehensive%20Monitoring%20Plan%20Sections%201-10.pdf Green Cities, Clean Waters Comprehensive Monitoring Plan, Appendices C and D (City of Philadelphia, 2014)<ref>. City of Philadelphia. 2014. Green City, Clean Waters: Comprehensive Monitoring Plan. The Philadelphia Water Department. Philadephia, PA. http://archive.phillywatersheds.org/ltcpu/GCCW%20Comprehensive%20Monitoring%20Plan%20Sections%201-10.pdf</ref>
*[http://archive.phillywatersheds.org/ltcpu/GCCW%20Comprehensive%20Monitoring%20Plan%20Sections%201-10.pdf Green Cities, Clean Waters Comprehensive Monitoring Plan, Appendices C and D (City of Philadelphia, 2014)<ref>. City of Philadelphia. 2014. Green City, Clean Waters: Comprehensive Monitoring Plan. The Philadelphia Water Department. Philadephia, PA. http://archive.phillywatersheds.org/ltcpu/GCCW%20Comprehensive%20Monitoring%20Plan%20Sections%201-10.pdf</ref>
===External guidance on monitoring the performance of stormwater BMPs===
It is recommended that at a minimum, the drainage performance of stormwater infiltration BMPs be evaluated as part of Assumption and Verification inspections. Drainage performance, or the ability of the BMP to fully drain runoff from a certain size storm event within a certain time period, can be evaluated by continuous monitoring during natural or simulated storm events. When a water source of sufficient size to fill the sub-surface water storage reservoir is available, it is recommended that drainage performance evaluations be performed by simulated storm event testing as results can be produced within a much shorter time period (e.g., within a week) as opposed to natural storm event testing, which can require field monitoring activities over 6 months to 2 years in duration.
The general approach involves installing water level logger sensors (i.e., pressure transducers) in:
*a perforated standpipe on the BMP surface to measure the time required to drain water ponded on the surface (i.e., the surface water storage reservoir component) and estimate filter bed surface infiltration rate; and,
*a monitoring well screened within the sub-surface water storage reservoir component of the BMP
==Green Roof Irrigation System Testing==
==Green Roof Irrigation System Testing==