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→Continuous Monitoring
#Determine the drainage time from the water level measurements
#Determine the drainage time from the water level measurements
#Calculate the infiltration rate based on water level measurements once flow from the subdrain has stopped as the change in storage volume over time divided by the infiltration area.
#Calculate the infiltration rate based on water level measurements once flow from the subdrain has stopped as the change in storage volume over time divided by the infiltration area.
#If more than 13 m<sup>3</sup> of water (i.e., the typical capacity of water tanker trucks) is needed to fill the sub-surface water storage reservoir, a fire hydrant will need to be used as the water source.<br>
#If more than 13 m<sup>3</sup> of water (i.e., the typical capacity of water tanker trucks) is needed to fill the sub-surface water storage reservoir, a fire hydrant will need to be used as the water source.
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*Mean values for drainage time and infiltration rate should be calculated and compared to design specifications or regulatory criteria to determine if the BMP is draining at an acceptable rate.
*Mean values for drainage time and infiltration rate should be calculated and compared to design specifications or regulatory criteria to determine if the BMP is draining at an acceptable rate.
*Alternatively, a simulated storm event test can be performed, using the stepwise procedure described above.
*Alternatively, a simulated storm event test can be performed, using the stepwise procedure described above.
===Water Treatment Performance Evaluations===
When the objectives of BMP inspection include determining if the BMP is providing a minimum level of water treatment performance, design of the continuous monitoring program needs considerable thought. Table 8.10 describes some key considerations in program design.
Key considerations in designing continuous monitoring programs for water treatment
evaluation.
For further information regarding natural and simulated storm event testing, acceptance criteria per LID BMP type and associated testing tools and protocols scroll down to the embedded 2016 guide below.
For further information regarding natural and simulated storm event testing, acceptance criteria per LID BMP type and associated testing tools and protocols scroll down to the embedded 2016 guide below.