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<br />t <br /> <br />Total estimated cost for irrigation ditch/control structure: $24.100 <br /> <br />t <br /> <br />S2,250/yr for O&M of ditch <br />S250/yr for O&M of channel control <br />structure <br /> <br />. <br /> <br />Total estimated O&M for irrigation ditch/control structure: <br />Total estimated cost for management action #2: <br />Total estimated O&M for management action #2: <br /> <br />$2,SOO/yr <br />$124,100 <br />53,SDDlyr <br /> <br />. <br /> <br />Wetland Habhat MansQement Action #3 <br /> <br />Plant approximately 37 acres of the mitigation area with willow, 32 acres 01 which will be interplanted <br />within existing degraded stands of willow and 5 acres of which will be low-density planting within wet <br />meadow adjacent to the stream channel. <br /> <br />Responsible Agency: BLM <br />Cooperating Parties/Agencies: CDOW, USFWS, COE, EPA <br /> <br />. <br /> <br />Successful implementation of wetland habitat management actions # 1 and #2 is prerequisite for the <br />implementation of this management action. A qualified re....egetation specialist, subject to apprcwal of <br />COE, will be hired by the Ril/er District to direct re....egetation efforts and conduct monitoring of <br />re....egetated areas. <br /> <br />Maps 3 and 4 present the location of areas for the cutting of sprigs and willow revegetation. <br />Procedures for the collection, preparation, and planting of willow sprigs include the following: <br /> <br />I <br /> <br />Step 1; In late March or early April of the year in which this plan is implemented, approximately 61,250 <br />willow sprigs ranging from 1/4-inch to 1/2.inch in diameter will be cut from local shrubs on the south <br />end of the proposed mitigation area Approximately two-thirds or 40,500 of these sprigs will be cut <br />from species of willow other than sandbar willow (Salix exidua) and the remaining third or 20,750 <br />sprigs will be cut from sandbar willow, Sprigs will be taken to a greenhouse or other suitable work site <br />where they will be treated with a root growth stimulator solution for approximately 2 to 3 weeks. <br /> <br />I <br /> <br />. <br /> <br />Step 2; Once treated with root growth stimulator, the sprigs will be planted at the mitigation site in <br />premarked areas (Maps 5 and 6) as soon as possible after snowmelt and before bud break (late April <br />to earty May). For the 32 acres of interplanting within the willow riparian type, the willow sprigs will be <br />planted on approximate 4,5-foot centers (1,875/acre) using a planting bar. A hole approximately 12 <br />inches deep will be punched into the ground with the planting bar. One-quarter cup of a mixture of <br />two parts tine sand or sandy loam to one part fertilizer (18-6-6 or similar) will be placecl in each hole <br />prior to inserting the willow sprig. The willow sprig will then be placed in the hole and the soil <br />compacted firmly around the sprig, For the 5 acres of low-denslty planting along the stream channel <br />within the wet ....egetation type, the willow sprigs will be planted on 12-foot centers (25O/acre) using the <br />same techniques as described abo....e. <br /> <br />Step 3; The seedlings will be monitored 3 times during the first summer after planting to determine if <br />rOdent or big game damage is excessive and that survival rates are acceptable (a minimum of 80 <br />percent survival is acceptable). Seedling mortality will be compensated by additional planting the <br />following spring, if necessary. <br /> <br />Estimated cost 37 acres @ $830/acre = S30,710 <br /> <br />18 <br />