Laserfiche WebLink
CONBTRIICTION QF VEQETATED SWALES: <br /> Prepare the swale for sod imme<iiately after it has been • <br /> graded. Rouqhen the bottom and sides of the swale by <br /> raking, place 4" (minimum) of topsoil, and fertilize with an <br /> appropriate fertilizer at the rate of 7 lbs per 1000 square <br /> feet befoi•e laying the sod. ��3e aenonanh suhorus�containina <br /> P-K) fertilizer. However, <br /> fprtilizer if the swale is beinc�,con�tructed in the Silver <br /> • �Q nrairaae basin. <br /> NOTE: iopsoil shall meet the standard for Topsoil Type A, <br /> as specified in section 9-14.1(1) of the 1991 Standard <br /> Specificatfons for Road, Bridge, and Municipal Construction <br /> (WSDOZ', APWA) with the following modification - 100$ of the <br /> topsoil shall pass through a 1/2" sieve. <br /> Sod the swale immediately after the sides and bottom of the i <br /> swale have been prepared. Lay sod to a minimum of i.0 feat ; <br /> of vertical depth above the bottom of the swale. Anchor the <br /> sod in place in the bottom of the swale and to 1.o fa�t of <br /> vertical depth above the bottom of the swale with stakes, , <br /> metal staples or other means. <br /> NOTB; Lay the sod pieces with their long axis perpendicular , <br /> to the direction of flow in the swale, and stagger the <br /> pieces to avoid a continuous longitudinal seam in the bottom <br /> of the swale. , <br /> Hand-seed cr hydroseed the swale with the specified seed mix � <br /> in addition to sodding. ?f the swaie fs completed bekween <br /> April 1 and September 1, hand-seed th� swale immediately. <br /> If the swale is completed between September 1 and April 1, <br /> hand-seed after April 1, but before April 30, of the spring <br /> followinq completion. Disperse 5 lbs of seed per 1000 <br /> equaxe feet evenly over the sod and all bare areas of the : <br /> swale. <br /> To plant wetland vegetation required for biofiltration � <br /> swales, punch holes in the sod with a bar or stake , <br /> approximately equivalent to the diameter of the plants� root � <br /> wads. Insert the plants in the holes and tamp the sod and ; <br /> earth down around the plants. Locate the plants in the <br /> bottom of the swale only and in a staggered pattern - not in i <br /> a straight line. f <br /> NOTE: Wetland vegetation planted after March 15 will <br /> vi bilityrripetlandtolants id allv ahou d be plant d betweet ' <br />� October and March. � <br /> � <br /> � <br /> � I <br />