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Line 149: − − [[File:Monitoring_well.gif]] − − <small>Simplified cross section of a standard monitoring well.</small><ref> Hawaii State Department of Health. TGM for the Implementation of the Hawai'i State Contingency Plan. Subsection 6.2. MONITORING WELL INSTALLATION AND ABANDONMENT. http://hawaiidoh.org/tgm-content/0602a.aspx?f=T. Published (n.d.). Retrieved August 27, 2021. </ref> −
→Monitoring Wells
===Monitoring Wells===
===Monitoring Wells===
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