1818 121ST ST SE 2018-01-01 MF Import

result in much more than the required volume in the wetvault. As long as the minimum required volume is provided in the treatment cell (62o cubic feet), the increased volume provided in the wetvault does not violate City standards. PLAN REVIEW COMMENTB � �etoonds A planting schedule for the treatment area of the wetpond fa �r�i�f ��L� required for appruval by the City. The plans should call 1�i5 � out the type of veqetation to be planted, the density of the '1 �� plantings, and the total number of plants needed. Plants ��u �'vIU suited to the depth of water in the treatment area should be `�S �� used. Hardstem bulrush, yellow iris, and/or cattails are ��/,1- ,�G appropriate in areas of the pond with 1-2 feet of water, �i• with small fruited bulrush, spikc� rush and/or soft rush � ��, planted around the wetland treatment cell perimeter. ry �K�� n�'Required density of plantings is a minimum of one per 2.25 �}�v ' 41� square feet. i ��n� � Q G�'�� ,�� /�The pond detail needs to clearly show the area of the pond �(�i 5�� k� to be planted and a note should reference the plantinq �� schedule. The note should also indicate planting o: the �l�`��`�QI� randomepatternation in qroups, rather than in a completely P��'``'` � The actual contours for the pond and how they relate to the surrounding topography shouid be shown. ✓ Rip-rap 12" deep and 2� wide should be placed from the inlet co the pond to the bottom of the pond. City standards require the followinq note regarding pond V berm materials to be included on the plans: NOTE: Berm soils shall consist of material conforming to the following gradation: Sieve Size � Passing 3 �� 100 �q 65-90 #200 12-20 The City inspectors request that the wetpond construction notes, from section 4-10.3(2) of the City's standards, be V" provided in a conspicuous place on both the storm drainage plans and the landscape plans.