6300 MERRILL CREEK PKY BASE FILE 2018-01-01 MF Import

i � � Section One � Project Overview The site is situated west of Merrill Crcek Parkway north of Seaway ( boulevard. See Figure 1 for a Viciniry Map. The proposed Solectron development ��Il consist of combination warehouse and assembly buildings. The initial phase of development «�II develop hvo of the � tivee proposed buildings. These first hvo buildings will be connected by a walkway and operate as one building. All utilities will be I installed for the third building and the third building pad will be graded to drain and accept development at a later time. The total site development consisu of approximately 18.9 acres of building, ' parking and stormwater water quality ponds. The boundary conditions of the projcct are detailed in the Proposed Basin Map, included as Figure 3. � Preliminary Conditions �e predeveloped conditions of this 33.4-acre site are as follows. ' Summary 'Che site has old second growth forest with dense underbrush. The developable portion of thc site (approximately 18.9 acres) has e�cisting slopes ranging from 2% to 12%. The steeper sloped areas � of the site are protected by a na[ive growth protection area. The underlying soils arc classified �s Aldenvood gravely sandy ►oam. This soil is in hydrologic soil group "C". Tius soil has a � moderately high cunoff potential. The soil has a slow infiltration rate when thoroughly wetted. These soils also have a moderate rate of �vater transmission. This information was obtained from the � Unifed Smtes Deparrment oj Agriculture Soi! ConservaHon Serviee Soil Survey oj Snohomish County Washington. Background information conceming the soils is in Appendix A. �_ The storm�vater runoff flows mainly into three separate b�sins. Two of the basins converge soon after leaving the dcvelopable portion of I the site. Therefore, the site was considemd to have two drainage basins. One basin flows 'nto the regional detention pond on the northeast side of the site. The other basin �lows into the native ( growth protection area on the northwest sidc of the site. 'Ihe existing basin map is included in Figure 2. I Off-Site Analysis During the SEPA re�riew process off-site analysis was not requested � nor identified as a requirement for development of this lot. The majority of the stortnwater will be discharged into the regional stormwater detention pond. Therefore, an off-site analysis was not performed on this poction of the site. Solectrort Corporafion Lo!1FojSeawav Cenfer I:IProiect119340l0llwordlSLR1FDRNdoe I li'&IlPacifrc November7, 1997%Pagel