{HEAD ~ Treated stormwater} passes through the underdrain pipe, through an underdrain pipe opening in the sidewall or bottom to a storm drain or sewer system or {TAIL ~ other type} of discharge system or method 
passes to
{ HEAD ~ Treated stormwater } passes through the underdrain pipe , through an underdrain pipe opening in the sidewall or bottom to a storm drain or sewer system or { TAIL ~ other type } of discharge system or method
HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH