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editpi— <br /> .r, _t C "s .R, <br /> i <br /> 1 <br /> 3.3 Mitigation.Measures <br /> Prior to Construction <br /> 1. esa,#` . #s'tl _ ,u I.- r k# the Directors of thePtenning <br /> and Co k.I! t 6 * :,=, e , I <br /> gp �� _ the n WL �ng ���1 o S���s Deparfngnt prior <br /> envirrn r: s a si� e Within t)feet of an <br /> m,we and,landslide hazard area,eto.)and <br /> associated buffer Tkeynetructiort management plan Most Include the following minimum <br /> measures <br /> I <br /> a Specific erosion controls to be Implemented prior to authorizing any construction activities which <br /> will impact an environmentally sensitive area as defined by the City's environmentally sensitive k <br /> area regulations. <br /> oe " <br /> b, Per fta I� en,Pr a�J n t4 erasl0,}+ �1=, ,silts ®ors e # ='con� �, ^t.n <br /> MaliMalil :.Eli! , I i_r c sa t trilli�t-' = -ibi II l•I.0 !l It e t91 1,: s:a L <br /> e ., e e e P :fin n 1 .I <br /> , ,.. ' of al i {ik .f)il oic-e) Ott' 1' Z21!''.2 ' r <br /> C. Implementation of best management practices to control erosion both during and after • <br /> construction,including compliance with the City of Everett's Design and Construction Standards <br /> and Specifications Manual and the Stormwater Management Manual. <br /> d. Construction schedule,status updat porting,rfquirements,and contingency provisions to <br /> become effete.{f the ache le 1e'n t met <br /> . i <br /> 4 2. Any wateer.quality enhancement or detention fitollitieS proposed.near stop slopes wli require s <br /> . de#cite ' ,ehril i nal ale and deaf mints an Censures their"sa€ety0 <br /> ,,en 3, Prior to Issuance of grading permits for removing earth from a site,the applicant must demonstrate <br /> thft <br /> at permits have been obtained for placement of the earth off-site. <br /> During ConstructIon/Earthwork <br /> I <br /> 4. All eart m Baal c lly haz rdous area or Its required buffer must be performed under the e, eotogiclly hazardous <br /> . su ery cal engineer eer must.provide certification <br /> fo the thatall work was done in compliance with requirements set forth in the City approved " 0 <br /> iiitp, „ail report. <br /> 5. In order to minimize erosion during construction,all soil plies shall be covered with plastic sheeting or l <br /> other impervious covering staked to the ground or anchored with rocks or sandbags. Berms,earthen <br /> or otherwise,must be constructed at the perimeter of excavated areas to prevent adiacent site runoff <br /> from entering the excavations. , <br /> I <br /> 6 Temporary slopes within native glacial soils shall be limited to a maximum angle of 1/2 foot horizontal <br /> (H)to 1 foot vertical(V), Temporary slopes within fill soils shall be limited to a maximum angle of <br /> 1 H:1 V. Temporary slopes must be covered with an impermeable membrane,such as visqueen or <br /> mulch,in order to prevent precipitation from coming in contact with the soils. <br /> Permanent slopes steeper than 25%shall be designed by a professional civil or geotechnical <br /> engineer. The design should present appropriate erosion control measures which may include: <br /> hydroseeding,erosion control blankets,rip-rap,Jute matting,and visqueen. I <br /> 7. Grading/filling must not adversely affect the hydrology of streams and existing or created wetlands. 1 <br /> 8. Grading/filling on-site shall not adversely affect adjoining sites. <br /> l <br /> 10//r i <br />