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→Overview
*Tight urban spaces where no landscaped practices can be squeezed in, and there is a low risk tolerance for flooding.}}
*Tight urban spaces where no landscaped practices can be squeezed in, and there is a low risk tolerance for flooding.}}
'''The fundamental components of an exfiltration system are:'''
'''The fundamental components of an exfiltration system are:'''
*perforated [[pipes]] connected to manholes and catchabasins,
*pre-treatment devices to retain coarse sediment, trash, debris and floatables,
*a gently sloping granular [[reservoir aggregate| reservoir]].
*perforated [[pipes]] connected to maintenance holes and catch basins,
'''An additional components is:'''
*a gently sloping granular [[reservoir aggregate| storage reservoir]] below the perforated pipe.
'''Optional components include:'''
*[[Geotextile]] to prevent migration of fines into the reservoir.
*[[Geotextile]] to prevent migration of fines into the reservoir.