11126 PAINE FIELD WAY 2016-01-01 MF Import

� Page 3 oe � � The applicant is proposing to develop a 21-unit residential development on the southeastern, triangular shaped parcel. The applicant is also proposing the locate a stormwater detention vault on the southwestern triangular shaped parcel. The detention vault will impact the eastern edge of the wetland buffer. The applicant is proposing to reduce 772 square feet of buffer to approximately 62 square feet as reflected on the Sensitive Areas Study and Buffer Averaging Map, dated Oclober 14, 2006. Mitigation for these impacts is proposed throuc�h buffer averaging. Given the current degraded state of the outer portions of the buffer and that the total area of the required buffer will not be reduced but increased, impacts to the functions and values of the sensitive areas should not be affected. The applicant will construct a split rail fence along the entire perimeter of the buffer. Installation of fencing and signs will (urther protect the sensitive areas irom intrusion and abuse. IV. Project Mitigation/Buffer Averaging To accommodate this development, the applicant is proposing buffer averaging to reduce the wetland buHer. Buffer averaging will be applied for the reduction of the standard buKer of the on- sile wetland and stream. The buffer averaging plan will reduce a total of 772 square feet of the outer perimeter of disturbed portions of the required 75-foot buffer. Approximately 1,326 square feet of area will then be added along the standard buffer at a >1.5:1 buffer addition to reduction ratio. This buffer averaging plan is allowed under EMC 37.100(E) because there will be no net loss of wetland functions and values, no not loss of buffer area and the resuliing buffer shall not be less than 50 percent of the standard width. The resulting buffer area shall be greater than that of the required buffer. Through buffer averaging there will be no net loss of buffer area on-site. The buffer is proposed to be reduced at a maximum 12 feet resulting in a buffer widlh of a minimum of 62 feet. By providing additional buffer at a greater than 1:1 ratio, habitat values should see a net increase as well as buf(ering capacity. No loss of habitat shall occur as a result of this development and the installation of signs and fencing will limit inirusion inlo lhe sensitive areas. By increasing lhe area of buffer and limiting the reduction to the outer portions of lhe buffer, the site should see a net improvement in buffer functions and values. V. Implernentation of h!itigationlBuffer Enhancement Plan 1. The applicant has submitted an Environmental Sensitive Area Study and Buffer Enhancement Plan for Harvey Development— 18�h Avenue West by Wetland Resources, Inc., dated September 8, 2005. The Miligalion Plan including the Buffer Enhancement Plan Map, daled September 8, 2005 is approved subject to the following conditions: • Environmentally Sensitive Areas (ESA's) and buffers must be ilagged and protected, including the dripline of any significant trees near the edge of the buffers. Prior to conslruction, the consultant must verify the buffers and sensitive area limils. A pre-construction meeting must be held after lhe sensitive area buKers have been cleariy marked in the field. • Staking of mitigalion boundaries • Installation of temporary erosion and sedimentation control measures prior to commencement of any clearing or earthwork • Clearing and grubbing, over-excavation of wetlands and mitigation area, stockpiling of wetland soil materials, and contained root-and seed stock �� 1/6/2006