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c. Category IV wetlands that score 19 or fewer points for habitat shall have a minimum <br />buffer width of 35 feet. <br />d. Category IV wetlands that score 20 or more points for habitat shall have a minimum <br />buffer width of 44 feet. <br />2. Required Mitigation. <br />a. For wetlands that score moderate or high for habitat (20 points or more for the <br />habitat functions), the following criteria must be met. <br />i When feasible, a relatively undisturbed vegetated corridor at least 100 -feet wide <br />must be protected between the wetland and any other Priority Habitats as defined <br />by the Washington State Department of Fish and Wildlife ("relatively <br />undisturbed" and "vegetated corridor" are defined in questions H.2.1 and H.2.2 of <br />the Washington State Wetland Rating System for Western Washington -Revised. <br />Priority Habitats include: <br />• Wetlands <br />• Riparian zones <br />• Marine/estuarine shorelines <br />• Urban natural open space <br />The corridor must be protected for the entire distance between the wetland and the <br />Priority Habitat by some type of legal protection such as a conservation easement. <br />ii. Measures to minimize the impacts of different land uses on wetlands, such as the <br />examples summarized in Table 37. 1, are applied. <br />b. For wetlands that score less than 20 points for habitat, measures to minimize the <br />impacts of different land uses on wetlands, such as the examples summarized in <br />Table 37.1 must be applied. <br />Table 37.1 Mitigation Measures <br />Examples of <br />Activities and Uses that <br />Examples of Measures to Minimize Impacts <br />Disturbance <br />Cause Disturbance <br />Lights <br />• Parking lots <br />• Direct lights away from wetland <br />• Warehouses <br />• Manufacturing <br />• Residential <br />Noise <br />• Manufacturing <br />• Locate noise generating activities away from the wetland <br />• Residential <br />to the extent feasible. <br />Polluted <br />• Parking Lots <br />• Comply with the Department of Ecology's Stormwater <br />Runoff'* <br />• Roads <br />Management Manual for Western Washington (2005). <br />• Manufacturing <br />• Residential areas <br />• Application of <br />agricultural pesticides <br />• Landscaping <br />Stormwater <br />• Parking Lots <br />• Comply with the Department of Ecology's Stormwater <br />Runoff <br />• Roads <br />Management Manual for Western Washington (2005). <br />• Manufacturing <br />• Residential areas <br />23 <br />