2011-12-12_REVISION - M1982015 - Laserfiche WebLink

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2.2.2 Lacustrine Vegetation in the lakes and the saturated shallows of the lakes includes cattails and the noxious weed salt cedar. 2.2.3 Riparian Currently the riparian areas exist adjacent to the St. Vrain River and in limited areas around the lakes. The limited extent of riparian habitat around the lakes is due to the lakes remaining dry until the summer of 2011, at which time they were filled. Carma Bayshore intends to further develop the riparian habitat adjacent to the lakes in select areas. Currently, riparian vegetation consists of a sedges, juncus, and willows. 2.2.4 Upland Prairie To the north of the lakes, the topography of the Site quickly climbs approximately 50 feet to a gently sloping bench. Within approximately 24 inches above the surface water elevation of the lake, vegetation transitions into more upland prairie vegetation. Carma Bayshore intends to conduct revegetation activities in conjunction with this weed management plan to meet the goals of the CDRMS rules of diverse, effective, self - sustaining vegetative cover in addition to meeting the goals of Carma Bayshore as portraying the property as aesthetically pleasing and family - friendly. 3.1 SALT CEDAR 3.0 WEED INVENTORY This inventory of weeds was derived from the CDRMS inspection report dated July 19, 2011, and observations made during the site visit by Carma Bayshore and LTE on September 27, 2011. Salt cedar (Tamarix ramosissima) is a perennial shrub or small tree that grows along streams and wetlands and reproduces from seeds and by spreading root sprouts or stem fragments. It has small pink or white flowers in June through September. Seeds are small in size and are dispersed primarily by wind or water. Seed viability is typically less than one year. Once seeds take up water, germination can occur in as little as one day at which time the roots must come in contact with water or the seedling will die. Seeds and seedlings can germinate while afloat in streams or lakes and take root in locations away from their original plant. Trees are salt, drought, and fire tolerant once established. A mature tree can produce over 500,000 seeds and live more than 75 years. The taproot can grow to a depth of 30 feet. Once water is encountered by the taproot, secondary roots spread profusely which extract salt and water from the saturated and unsaturated soil. The salt cedar can consume up to 200 gallons of water per day. Salt cedar will be an ongoing concern for the St. Vrain Lakes property since Carma Bayshore pumps water from the St. Vrain River into the lakes and salt cedar occurs extensively in the St. Vrain River, which likely transmits salt cedar seeds. Weed Management Plan 2 (4,1t7