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