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*'''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.
 
*'''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.
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[[File:Monitoring_well.gif.extension|options|<sup>3A cross-section of a standard monitoring well</sup>]]
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[[File:Monitoring_well.gif]]
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<small>Simplified cross section of a standard monitoring well.</small><ref> Hawaii State Department of Health. (n.d.). TGM for the Implementation of the Hawai'i State Contingency Plan. Subsection 6.2. MONITORING WELL INSTALLATION AND ABANDONMENT.  Retrieved August 27, 2021, from http://hawaiidoh.org/tgm-content/0602a.aspx?f=T </ref>
    
==Materials==
 
==Materials==

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