Ordinance No. 20006 - Laserfiche WebLink

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uses within the NR district that are subject to site review or condi ti anal use approval . For uses subject to site review approval , performance contracts wi 11 be required i n accordance with section 9.694. For uses subject to candi ti oval use approval , performance contracts will be required i n accordance with section 9.722. 9.305 Natural Resources Special Standards, The following standards are applied to activities and uses permitted within the NR district as specified under "Permitted Uses" , "Uses Permitted Subject to Site P1 an Review" and "Uses Permitted Conditionally" . Nat all of the fallowing standards will be applied to all uses. These standards are also applied to parcels within the waterside protection sub-district and the wetland buffer sub-district, as specified i n the sections of this code which apply to those sub-districts . ~a} Buffer enhancements, 1, Plantings shat l be conducted on reduced buffers i n conformance with the vegetation removal and planting and replanting standards below as well as the following: a. Reduced buffer areas shall be planted with appropriate native tree, shrub and grass or other nan- woody species to increase to the greatest extent practical the capacity of the area to f i 1 ter pollutants from stormwater which flows across the buffer area. Where existing native vegetation already serves this function, new plantings wi 11 augment those already existing, unless the applicant can clearly demonstrate that additional pl anti ngs~ wi l l not improve the f i 1 teri ng capacity of the buffer area. b. Plantings shall be done with species native to the southern Willamette val 1 ey from a nati ve plant 1 i st determined by the. planning director, which are appropriate to the site given its topography, hydrology, soi 1, existing native vegetati an and historic native vegetation as determined by the planning director or designee. c. Plantings shall not adversely affect adjacent protected wetlands through invasion or other effects. 2 . All refuse, taxi c materials and any fill brought in from outside the site after August 8, 1993 must be removed from the buffer area. 3. Where practical, finished grades shall encourage sheet flaw of stormwater runoff across buffer areas to maximize filtering and infiltration of stormwater runoff within buffer areas. ~ r 4. On sites where the slope within the wetland buffer area exceeds 15%, measures fie. g. , planting and contouring} shall be taken to slow the flow of stormwater runoff to the maximum extent practical. 5. ~ Non-native plants shall be removed to the maximum extent practical and replaced with native species . 6. Buffer enhancement work shat 1 be completed prior to or concurrent with other site development, unless Ordinance - 22