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Areas within the required setback area subject to filling,grading or excavation as part of a construction project <br /> shall be revegetated immediately upon completion of such earthwork.Setbacks must be verified with wetland <br /> delineation information.The determination of whether a Level 1 delineation or Level 2 delineation is required shall <br /> be at the discretion of the planning director. Level 2 delineation information shall be provided on a certified <br /> certificate of survey.The requirement for delineation shall be applied in cases where the wetland exists within 150 <br /> feet of the proposed project. <br /> (d) The City of Orono has established wetland protection strategies in the Orono Surface Water Management Plan <br /> (SWMP) (lanuary 2011). A protection classification has been assigned to each wetland in Orono based on the <br /> stormwater susceptibility and functional assessment for each wetland.The city has also established additional <br /> protection requirements for each classification.The four protection classifications are described as follows: <br /> Additional Protection <br /> Requirements <br /> Protection Susceptibility (B- Bounce-Change in <br /> Description <br /> Classification Rating water level due to runoff <br /> event) <br /> i I (P=Phosphorus) <br /> �----.---.-----�--------------___-----�_._._�_.__.._ <br /> � B: Maintain bounce at or <br /> Highly susceptible to both quantity and quality below existing conditions <br /> Highly <br /> "Preserve" impacts from runoff; have the highest degree of P: Limit loadings to <br /> Susceptible <br /> protection predevelopment loading <br /> � (0.14 Lbs/Ac/Yr) <br /> � 1 <br /> iB: Maintain bounce at or <br /> below existing conditions <br /> Moderately susceptible to quantity and quality <br /> Moderately plus 0.5 foot <br /> "Manage 1" impacts; protection is less stringent than Preserve, <br /> Susceptible P: Limit loadings to <br /> provides protection to maintain their characteristics <br /> predevelopment loadings <br /> times 2(0.28 Lbs/Ac/Yr) <br /> � <br /> B: Maintain bounce at or <br /> below existing conditions <br /> Slightly Less stringent protection than Manage 1 wetlands; plus 1.0 foot <br /> "Manage 2° <br /> Susceptible maintenance of characteristics is desirable P: Limit concentration to <br /> predevelopment <br /> ; concentrations(200 ppb) <br /> �-- <br /> � <br /> � Wetlands are significantly degraded(e.g., cultivated <br /> B: No quantity <br /> or canary grass monotype)or lack of wetland <br /> �� Least requirement <br /> "Manage 3 characteristics; not typically impacted by runoff; no <br /> Susceptible P: Limit concentration to <br /> quantity and only limited quality treatment of runoff <br /> is required ZZ5 ppb <br /> I � <br /> _ _ . _ _ _ <br /> The protection classification for each wetland will be found on the "Wetland Management Classification Map& <br /> List"which is hereby adopted by reference,a copy of which shall be kept on file in the office of the city clerk and <br /> Page 8 <br />