|colspan="2" style="background:whit; color:red; text-align: center"| '''Drainage time of ponded water after the end of storm event , hr''' || || || || || 24 (48 recommd.) || < 48 (2 yr. design) || || || || || || || || || Max. 48 hr. || || || || | |colspan="2" style="background:whit; color:red; text-align: center"| '''Drainage time of ponded water after the end of storm event , hr''' || || || || || 24 (48 recommd.) || < 48 (2 yr. design) || || || || || || || || || Max. 48 hr. || || || || |