Changes

Recommended for monitoring drainage time between storms.  Monitoring well should be a vertical standpipe consisting of an anchored 100 to 150 mm diameter pipe with perforations along the length within the reservoir, installed to the bottom of the facility, with a lockable cap. Flow-splitting manholes may also be used for drainage time monitoring.

Recommended for monitoring drainage time between storms.  Monitoring well should be a vertical standpipe consisting of an anchored 100 to 150 mm diameter pipe with perforations along the length within the reservoir, installed to the bottom of the facility, with a lockable cap. Flow-splitting manholes may also be used for drainage time monitoring.

[[File:Monitoring well chamber.PNG|450px|thumb|Image of a monitoring well installed in a manhole with a submersible calibrated pressure transducer to provide continuous water level measurements, drainage times and infiltration rates of the associated studied infiltration chamber, located in Richmond Hill, Ontario. <ref>Young, D. Van Seters, T., Graham, C. 2013. Evaluation of Underground Stormwater Infiltration

[[File:Monitoring well chamber.PNG|450px|thumb|Image of a monitoring well installed in a manhole with a submersible calibrated pressure transducer to provide continuous water level measurements, drainage times and infiltration rates of the associated studied infiltration chamber, located in Richmond Hill, Ontario.<ref>Young, D. Van Seters, T., Graham, C. 2013. Evaluation of Underground Stormwater Infiltration

Systems. Toronto and Region Conservation Authority. Toronto, Ontario./ref>]]

Systems. Toronto and Region Conservation Authority. Toronto, Ontario.</ref>]]

===Access Structures===

===Access Structures===