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The proposed Wedand Miti�ation Planting Plan(Pigure 2)provides plant materials in excess of those
<br /> to bt removed and exceeds replacement of the functions and values of the weUand uea proposed for
<br /> removal, in the form of creation of new wedands adjacent to exisung funcuonal wetlands on the site.
<br /> Such newly created wetlands can offer greater biologic value and diversity through the ability to
<br /> incorporare additional species into the exisdng plant communides.
<br /> Upland Buffer Area. [n support of creatioo/maintenance of a funcuonal buffer between the created
<br /> wedand azeas and exisung faciGties at the Sno-Isle Skill Center, 5ees and shrubs will be planted
<br /> along the north and easterly mazgins of the new weflands. Such planting will eztend the adjacent '
<br /> community or replicate such vegetauon where either it has been removed during construc6on or is
<br /> currendy not present. Douglas-fir (Pseudouuga menZiesii, NL), westem hemlock (Tsuga
<br /> heterophylla, FACU-), westem redcedar (Thuja plicata, FAC) and red alder will be planted as
<br /> ultimate overstory species, with addidons of vine maple (Acer circinatum, FACU+) and black
<br /> haa�thorn (Gataegus douglasii, FAC). Shrubs to be planted will incL �red elderberry (Sambucus
<br /> racemosa, FACIn, indian plum (Oemlaria cerasiforn,is, NL), twinberry (Lonicera invo[ucrnta,
<br /> FAC), thimbleberry (Rubus parviflorus, FACU+), salmonberry and Nootka's rose(Rosa nutkana,
<br /> NL). A hydromulch of 20 percent common oat(Avena sativa), 30 percent aanual ryegrass (Lo[ium
<br /> temulentum), 40 percent sorghum (Sorghum vul8are�) and 10 percent cultivated wheat (Triticum
<br /> gestivum) will be applied ro this uea to reduce potential for erosion prior to establishment of a
<br /> ground layer. Any subsdNaons will be approved by the project biologist.
<br /> Periodicallv Samrated Scrub/Shrub Zone. To the greatest extent possible, scrub-s6rub vegetation
<br /> in wedands scheduled for removal will be re-used in the planting this zone in two locadons in the
<br /> midgafion azea (appro�cimately 2,860 and 830 squaze feet in azea) to provide biologic and
<br /> vegetational edge, with emphasis on the creation of an overstory. Additioaal plantings will
<br /> emphasize saturauon-tolerant tree species including Oregon ash (Fracinus lalifolia, FAC�, black
<br /> hawthom, westem crabapple (Pyrus fusca, NL), western redcedaz and cuttings of cottonwood
<br /> (Popu[us trichocarpa, FAC), with Pacific and Scouler willow cuttings in the lower and upper
<br /> portions of the zoue, respectively. The undersrory shnib layer will be comprised of red-osier
<br /> dogwood (Cornus srolortrfera, FACV� from cuttings and salmonberry. Pig-a-back, Pacific wate�
<br /> parsley (Oenanthe sarmentosa, OBL), spike rush (E[eocharis sp., FACW to OBL) and lazge-lcaf
<br /> avens (Geum macrophyllum, FACW+) will be planted sparsely in the lower fringes of this area as
<br /> the understory herb layer, with the expectadon that natural recruiunent will fill in the area.
<br /> Shallow Emergent Zone. As a zone subject to more consisten[ saturation, the two areas
<br /> iapproximately 4,190 and 680 square feet in size) will receive plandngs which aze adapted ro more
<br /> posidve hydraulic conditic�s. Pig-a-back, small-fruited bulrush (Scirpus microcarpus, OBL), spike
<br /> rush, slough sedge, skunk cabbage (Lysichia�m americara�m, OBL), broad-leaf cattail (Tjpha
<br /> latifolia, OBL) and Pacific v�ater parsley will be planted sparsely here, w�ith the expectation that
<br /> namral recruitment cvill fill in these areas.
<br /> � Nore: Ouly S. wlgare is suitable.
<br /> Almlilteo Sch. Dist. Centra!Faci[in� Finol Atidganen Plan Page 12
<br /> Lare![-Sauerland &As��ciates, Inc.
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