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===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.
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Recommended for monitoring drainage time between storms.  Monitoring wells 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.gif]]
 
[[File:Monitoring_well.gif]]

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