10725 HOLLY DR 2016-01-01 MF Import

!NTRODUCTION Project Description The Bwleson property is located at 10725 Floily Drive, Gverett, WA 98204(fig.l ). It is currently undergoing germitting requirements to construct a residential duplex in roughly the same location as the single family residence cunently at this location. The applicant is also proposing to vacate an onsite drain field and caunect to city sewcr systems. Construction activities may impact buffers to a small stream and associated wetlands on site. This study analyzes the site,as advised in pre-submittal advisories with City of �verett Planning staff for critical arcas pursuant to revised submittal requirements Ordinance 2090-06. Sitc Dcsrription The area laudscape appears to be long established suburban residential pazccls with a few �,:ede��oped lazger acreage parcels to the south roughly along ihe downsiream flow. Because the arca lies within the urban growth Uoundazies of the City of�verett, it is being quickly in-filled to more urbanized densities through recent devclopment trends. , The neighborhood drainage is in the upper one-third of the Swamp Creek subbasin(fig. 2). The properiy is an acute triar�gle shape with the hypotenuse forming the rear, southern propeRy line 9(fig 3). The casterly border is perpendicular to Hoily drive,the weslem border,the apex of the angle. Roughly 50 ft of the east of the western apex is an outflow culvert channeling intennittent runoff from the north side of Holly Drive to the south. The water crosses the property for some 25 ft. and exits in a hardened channel across thc souihwestem neighbor's rear lawn. DNR water type criteria designates the onsite stream as Type 5-no presence of fish,on the norlh and south sides of Holiy Drive,and extending to the confluence of another tributary where the designation upgrades to Type 3 "assumed presence"of fish(fig3, as illustrated Snohomish Conservation District map). Interpreting these DNR ratings to thc stream classifications under GveretYs ordinance 2090-06 as mentioned nbovc,the westerly stream channel on the subject property is rated Type Ns, the contluence to ti�e west and on downstream is Type F. Vegetation along the stream is both facultative wetland scrub shnab and emcrgent species with some mature western red cedae The gradicnt of the stream does flatlen out sufficicntly to warrant wetland reconnaiss,^.nce, with delincation results also outlined in this rcport. �