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Community LL-W2 <br />Shallow Marsh/Wet Meadow <br />Qualitative Rank: Higit/Medium <br />Area: 0.3 acres <br />TE�is basin is directly connected to the southern tip of the Iake. A boardwalk crosses the wetland <br />near the Iake edge. A high berm separates this wetiand from a storm pond to the east. The <br />wetland vegetation is primarily cattails, with black willow, duckweed, and soft-stern bulrush. <br />Buckthorn and sandhar willow are present in noticeable amounts. Reed canary grass has become <br />more do�ninant in the southern portion of the wetland where sedirnentation has occurred. This is <br />a hi�hly visible wetland with the boardwalk and a grass walkino path fro�n businesses to the <br />south. <br />Historic sedimentation from parking lot located southwest of this wetland was observec�. This <br />has resulted in a conversion to reed canary grass and reduced �he hydrolo�y of approximately <br />3,400 square feet of this basin. Restoration of this basin would involve removal of 1— 2 feet of <br />accumulated sediment. Sediment traps at the discharge point of the parking lot would help to <br />reduce sedirnentation in tt�e basin. Catch basin at the end of the cul-de-sac has a low curb that <br />allows some drainage to be dixected to W2 without treatment. Curb modifications or a benm <br />should be placed to insure flows enter the catch basin and ultimately reach the storrtt water <br />trcatment pond. <br />EStim$ied <br />Commumty Actcvzty ; Pnority ; ` - Commenks r <br />: •. :;; . COsf - ::.. . ,: " - <br />, , .. ,. <br />LL-W2 Re�nove sediment Medium $2,500.00 Removal of accumulated sediment should also <br />remove reed canary arass and seed source for <br />reed canary �rass. <br />LL-W2 Tnstall sediment trap Medium $3,000.00 Needed to reduce sedimentation in wctland and <br />at parking lot eould provide secondary benefit to reduce <br />nutrients to Lan�ton Lake. <br />LL-W2 Direct street flow to Mcdium $500.00 Berm to be constructed �o direct flows to the <br />storm pond storm pond and catch basin. Currently draina�e <br />from strect is goina over curb directly into <br />wetlancfs. � <br />LL-W2 Remove buckthorn High $500-1,000 Cut and treat all stumps with 25-SQ�Ic solution <br />per acre, 40- of Roundup or Garlon. <br />100 volunteer <br />hours er acre <br />Citv of Roseville 11 � <br />Park.s Natural Resa�i�-ce �Llairagentent <br />