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*An [[Overflow| overflow outlet]] to safely convey excess flow to a downstream storm sewer or the next BMP in the treatment train.
 
*An [[Overflow| overflow outlet]] to safely convey excess flow to a downstream storm sewer or the next BMP in the treatment train.
 
'''Additional components may include:'''  
 
'''Additional components may include:'''  
*An [[underdrain]] to redistribute or remove excess water
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*An [[underdrain]] to redistribute or remove excess water and structures or standpipe ports for periodic inspection and flushing
*Underdrain access structures or standpipe ports for periodic inspection and flushing  
   
*[[Wells|Monitoring wells]] installed to the base and screened in the internal water storage reservoir to verify and track drainage performance
 
*[[Wells|Monitoring wells]] installed to the base and screened in the internal water storage reservoir to verify and track drainage performance
 
*Filter media [[additives]] intended to enhance retention of nutrients, metals, petroleum hydrocarbons and/or bacteria.
 
*Filter media [[additives]] intended to enhance retention of nutrients, metals, petroleum hydrocarbons and/or bacteria.

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