8925 AIRPORT RD MUKILTEO SCHOOL DISTRICT 2018-01-02 MF Import

3.3.1 Pre-construction Meeting The preconstruction meeting will be conducted on-site between the project biologist, the applicant (or representaave), responsible Ciry staff and the selected contractor. At that Ume, in addidon to achieving agreement on the intent and specific condiuons of the plan, criflcal paths for the project will be agreed upon and timing of critical points for City of Everett review will be confirmed. 3.3.2 Insta[lation of Temporary Erosion and Sedimentation Contro! (7:E.S.C.) Measures , As an early project element which will set the stage for accuracy and response to environmentat requirements, following the saasfactory conclusion of the pre-construc6on meeting, the project biologist will supervise the installaflon of temporary erosion and sedimentation conGol measures. SIlt fences will be installed at the existing wetland limits in the mitigation project azea of to reduce potential for exportation of sediment to the downstream drainage. Following grading acUviaes in the mitigation azea, the proiect biologist will supervise staking of planned planflng zones. 3.3.3 Wetland Soil Stoekpiling, Mitigation Area Grading and Replacrmenr of Wetland Soil It is anacipated that earthwork associated with construction of the project will be iniUated upen approval of the Wedand MifigaUon Planting Plan for the project and will be completed during the summer of 1994. Following iastallauon of T.E. & S.C. measures, the project biologist be available to direct the removal and storage of wetland soils from Wetlands B and C. Complying with the contour specifications contained in the Wetland Miugafion Planting Plan(Fie ce 2) and as modified by the project biologist in response to site condi6ons, the former corral azea outside the created weUand zones will be excavated to a depth of 18 inches below finished grade and replaced with topsoil. During placement of topsoil, the first six inch lift is to be rotovated to a deuth of 12 inches to mix with the scarified subgrade and the successive lifts aze to be rotovated to a depth of at least 8 inches. The fina! lift is to be applied to meet grade plus two inches, assuming 2 inches of settlemeat. Such soii replacement will optimize infdl with naflve plant species to provide a vegetate� transition to the constructed weUands. The berm area will be hand-seeded with a seed mixture oF native tree and shrub seeds at the direction of the project biologist. The final grade will be established by hand-raking to le��el low ueas and equipment tracks. A hydromulch of 20 percent common oat (Avena sativa), 30 percent annual ryegrass (Lolium temulentum), 40 percent sorghum (Sorghum vuleare') and 10 percent cultivated wheat (Triticum gestivum, will be applied to this u�a ro reduce potenfial for erosion prior ro establishment of a ground layer. Any substituflons will be approved by the project biologist. � Nc subs[itution allowed. Mukikeo Sch. Dist. Central Faciliry Final Midgauon Plan P2ge 9 Levell-,iauerland &Associates, /nc.