5301 COLBY AVE 2018-01-02 MF Import

('l rn up,•n spaces or car park areas _ The design uterm should not exceed a depth of three (3) inches. to case of a blockage at tha outlet, the design should provide for overland flow (preferably to a City street) when the depth increases to six (6) inches. e (3) Specially constructed detention ponds. When the design water depth for such ponds exceeds 3 feet or when side slopes for rnrch ponds are steeper than three horizontal to one vertical, the pond should be fenced for safety reasons. The side slopes should be stabilized for anti -erosion purposes. Berm construction should conform to sound engineering practices for design and construction drrd should be stable under all conditions, at all times. The width at, top of berm uhould be not less than 6 fast. MAINTLNANCL OF DLVnNTION STORAGE FACILITIES Maintenance of detention storage facilities located on privately owned property !;hall be the respunsibili.ty of the property owner. DESIGN OF OO'I'LET FIPI", The outlet pipe from the outlet control of the detention facility must have adequate capacity to cater for maximum inflow. Under normal circumstances the outlet pipe capacity would equal the runoff from the contributing catchment area with post development runoff coefficient. 'flee Ripe size may be selected from a suitable nomograph or m.ry be calculated mathematically.