Changes

#Verify that an observation well is provided for a storage system that includes stone storage and that it meets the following requirements:

#Verify that an observation well is provided for a storage system that includes stone storage and that it meets the following requirements:

#The observation well must be placed at the invert of the stone bed.

#The observation well must be placed at the invert of the stone bed.

#An observation well must be located near the center of the stone bed system to monitor the level and duration of water stored within the SMP ([[drain down time]]).  

#An observation well must be located near the center of the stone bed system to monitor the level and duration of water stored within the SMP ([[draindown time]]).  

Adequate inspection and maintenance access to the observation well must be provided.

Adequate inspection and maintenance access to the observation well must be provided.

#A manhole may be used in lieu of an observation well if the invert of the manhole is installed at or below the bottom of the SMP and the manhole is configured in such a way that stormwater can flow freely between the SMP and the manhole at the SMP’s invert.

#A manhole may be used in lieu of an observation well if the invert of the manhole is installed at or below the bottom of the SMP and the manhole is configured in such a way that stormwater can flow freely between the SMP and the manhole at the SMP’s invert.