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