1910 112TH ST SW RIVERSTONE SITE DEV 2016-01-01 MF Import

SITE DESCRIPTION A site investigation and wetland delineation were completed by Wetlond Resources, Inc., in October of 2003 to delineate jurisdictional wetlands on an approximate 1.85 acre parcel located at 1910 112�' S[. SW in the city of Everett, WA. The site is located as a portion of Section 28, Township 28N, Range 4E, WM. Access to this site is from the north via 112'� St. SW. Surrounding land use is comprised of single•family residences and apartments. This site is generally flat, with a slight south aspect. This site is currently occupied by a singie-family residence, detached garage and maintained lawn. No wetlands were found on the subject prope�ty. A large Category II we[land lies to the south of ;he subject property. This forested wetland is associated with the main stem of Swamp Creek. A smaller Category III wetland lies off site to the east of the subject property. Pursuant to City of Everett Chapter 37 Environmentally Sensitive Areas code, Category II wetlands in the city of Everett typically receive 75-foot protective buffers, while Category III wetlands are granted 50-foo: buffers. Portions of the buffers from both wetlands extend onto the subject site. PROJECT DESCRIPTION A 13•unit development is proposed for this property, which will include retention of the existing s�ngle-family residence. To accommodate the lot layout, the applicant is proposing to reduce 1,740 square feet of buffer through averaging. As mitigation for buffer reduction, 1,868 square feet of additional area is proposed to be designated as buffer. The areas to be reduced and the areas to be designated as additional buffer are comprised of maintained lawn; both are of equivalent quality. This buffer averaging plan will increase the buffer area to 128 square feet over that required by the standard buffer. The minimum buffers that will result from this averaging will be 54 fee[ from Wetland A(Category II) and 30 feet from Wetland B(Category lil►. A split rail fence and ESA signs will be installed along the edge of the on•site buffer. Implementation of this buf(er averaging plan should maintain overall functions and values provided by this site. TEMPORARY EROSION AND SEDIMENTATION CONTROL Temporary erosion control devices shall be placed prior to construction to reduce siltation into sensitive areas. Siltation fencing shall be used to prevent impacts to wetland and stream functions during construction and planting. All erosion and sedimentation control facilities shall be kept in place and functioning until ground vegetation is firmly es[ablished. All elements of the site engineer's TESC Plan shall be followed. 1 � 5