Changes

Jump to navigation Jump to search
no edit summary
Line 1: Line 1:
[[File:monitoring-well-subgrade.jpg|400px|thumb|right|Monitoring well stack installed next to underdrain within the LID practice.]]
[[File:monitoring-well-subgrade.jpg|400px|thumb|right|Monitoring well stack installed next to underdrain within the LID practice.]]
====Monitoring Wells====
====Monitoring Wells====
[[Monitoring wells]] allow for measurement of water levels in the sub-surface components of LID practices. They are important for sampling procedures and ensuring that the LID feature are performing as intended.<br>
[[Monitoring wells]] allow for measurement of water levels in the sub-surface components of LID practices. They are important for sampling procedures and ensuring that the LID feature are performing as intended.


'''Construction Steps:'''<br>
'''Construction Steps:'''
#Install a cap stand at the required elevation to anchor the monitoring well.
#Install a cap stand at the required elevation to anchor the monitoring well.
#Wrap the perforated pipe with a geotextile sock (to prevent migration of soil into the well).
#Wrap the perforated pipe with a geotextile sock (to prevent migration of soil into the well).
#Anchor the perforated pipe to the bottom of the LID feature.
#Anchor the perforated pipe to the bottom of the LID feature.
#Install a lockable cap to the top of the standpipe to protect against vandalism.
#Install a lockable cap to the top of the standpipe to protect against vandalism.
#Install monitoring equipment (e.g., a level logger) if required.<br>
#Install monitoring equipment (e.g., a level logger) if required.


'''Key Inspection Points:'''<br>
'''Key Inspection Points:'''
*Pipe is perforated, rigid, and matches design specifications.
*Pipe is perforated, rigid, and matches design specifications.
*Well is installed according to contract documents.
*Well is installed according to contract documents.
*Geotextile sock is wrapped around the perforated portion of the well.<br>
*Geotextile sock is wrapped around the perforated portion of the well.


'''Mistakes to Avoid:'''<br>
'''Mistakes to Avoid:'''
*Incorrect sequencing – ensure that standpipe is installed prior to backfilling with granular material.<br>
*Incorrect sequencing – ensure that standpipe is installed prior to backfilling with granular material.
426

edits

Navigation menu