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� . �, <br /> Recommended methods for constructing vegetated swales have <br /> chanqed recently. The paragraphs given in the attached <br /> sheet entitled "Construction of Swales IIsing Sod'� must be <br /> included on the plans. <br /> The ewale seed and plant liet from page IV-17 of the City�s <br /> standards must also be included on the plans. A copy of the <br /> list is attached. The list of additionai vegetation for <br /> ' biofiltration swales was written for a one foot wide swale. <br /> Given that the swales on this site are designed to be wider <br /> than one foot, the specification for each vegetation type <br /> should be changed from "25 clumps per lineal foot of swale" <br /> to "25 clumps per sware foot of swale'�. <br /> The awale construction notes and swale planting/seeding <br /> requirements must be shown on both the landscaping plan and <br /> the storm drainage plan. <br /> The attached detail showing the cross-section of the <br /> biofiltration/grass swale should be included on the storm <br /> drainage plans and the landscape plan3. The d� l should <br /> help clarify swale construction. <br /> Wetpond• <br /> A planting schedule for the treatment area of the wetpond <br /> must be approved. The plan should call out the type of <br /> veqetation to be planted, the density of the plantings, and <br /> , the total number of plants needed. The plan must be shown <br /> on both the landscaping plan and the storm drainage plan. <br /> Plants suited to the depth of water in the treatment areas <br /> should be used, such as ca'ttails and/or hardstem bulrush <br /> (cattails seem to be the most "foolproof'�) . The density of <br /> , the plantings should be approximately one every square foot. <br /> The pond detail must clearly show the area of the pond to be <br /> plant�d - the area containeci by the 536 contour line should <br /> be shaded or cross-hatched. A note should reference the <br /> � planting schedule. <br /> Abso ely as much of the driveway r�unoff must be , outed to <br /> the ond p sibl , given th E�rades� of e dr ay <br /> an the r eleva ' ns in t ond. It' pears th ore <br /> o the iv ay c d ou ck to e nd, thou <br /> an ex a catc in and th o m 1 diame r. pipe wou <br /> be cessary. <br /> A gate, for access to the overflow structure and for the <br /> access road to the bottom of the first cell, must be shown <br /> on the wetpond plans. <br /> I <br />