9701 EVERGREEN WAY 2025-07-28 - Laserfiche WebLink

I. PROJECT OVERVIEW The proposed redevelopment consists of a new RiteAid store with associated grading, paving, drainage and utility improvements. The 2.01 acre site is located at 9701 Evergreen Way in Everett, Washington. The existing structures will be removed. The project requires compliance with the 1997 City of Everett Stormwater Management Manual. Erosion and sedimentation control measures will be provided as required. Stormwater will be discharge to the existing storm drain within 4th Avenue West at the SW corner of the site. Since the development will result in a decrease in impervious area,flow control measures will not be required. Water quality measures will be required to treat the 6-mo / 24-hr storm event. A new 24" storm drain reroute will be constructed to replace the existing 18" storm drain which runs under the proposed building. II. PRELIMINARY CONDITIONS SUMMARY The existing 2.01 acre site consists of an existing retail and car maintenance shop and a used car lot. The site is almost entirely impervious and drains to existing storm system within 4th Avenue West. The car lot on the south side of the site drains to an existing oil/water separator prior to discharge to 4th Avenue West. The existing suboils generally consist of silty, gravelly sand. Go groundwater was encountered to depths of at least 8 feet. Glacial till was encountered at approximately 5 feet below existing grade. III. OFF-SITE ANALYSIS The site generally sheet drains to 4th Avenue West. The 24" public storm drain within 4th Avenue continues in a southward direction beyond 100th Street Southwest. We do not know of any drainage problems associated with this system. The site also receives runoff from properties west of Evergreen Way. This runoff is routed through the site via an 18" storm drain. This drain will be rerouted around the proposed RiteAid. IV. EROSION AND SEDIMENTATION CONTROL BMP'S Erosion Control BMP's shall consist of a rock construction entrance, silt fencing,temporary swales, check dams and soil stabilization measures. A sediment pond has also been added at the southeast corner of the site with a filtered discharge to the existing storm drain within 4th Avenue West. Refer to Section 6 for the required Small Parcel Erosion Control BMP's. Refer to Section 5 for the sediment pond calculations.