3003 W CASINO RD 1992 SITE DEV 2018-01-01 MF Import

�DRAFT • Inlcrceptor Swale and/or Pcrimeltr Dike - Install interceptor swales or perimeter , dikes in accordance with City of Everett Design Standard Plan 207 w intercept storm water runoff from drainage azeas above unprotectad slopes and direct the runoft to a stabilized outlet. ` • Plaslic Sheeting - Plactic sheeting anchored with sandbags or tires on :opes should be used to cover stockpiles not in use or in the event of inclement weather. PERMANENT SLOPES We recommend a permanent slope inclination no steeper than 2H:IV(horizontal to veaical) in dense aative soil or in structural fill placed in accordance with our recommendations. Swctural fill placed within pavement areas ahould meet the criteria described in the previous � section, "Structural Fill." Pill should be carefully compacted on the siope face, or tbe fill embankment can be overbuilt and cut back to the appropriate siope configuration. Permanent , alopes must be hydroseeded or otherwise protected from erosion. Erosion protection of permanent slopes may be accomplished by planting deep•rooted vegetation and wvering ihe slope witL mulch or matting. Numerous products are available to cover the ezposed area including jute matting, ezcelsior matting, woven straw matting, synthetic fiber matting, seed impregnated sheeting and sptayed fibers. The slopes should be monitored and protected from erosion until plant growth is well established. FOUNDATION CONSIDERATIONS Shallow Foundations Although the building locations and configurations have not been cstablished, we anticipate that isolated ot continuous spread footings founded on undisturbed native dense soils will provide suitable support for foundation elemenu of the swctures. We recommend that when the building locations and anticipated loading conditions have beea established, additional subsurface explorations be completed near the proposed building foundations. At that time, more detailed foundation recommendations can be provided. If footing excavations are completed during wet weatber, ezcavation of the wet, loose soils will be necessary. This disturbrd material should be replaced with strvctural fill with less tban 5 percent fines. This swctural fill zone should rJso extend at least 1 foot beyond the edges of the footings for each 1 foot of depth of excavation. Footings should have an embedment of at least 18 inches below the lowest adjacent grade or top of floor slab, whichever is lower. We recommend that continuous footings have a width of at least 2 feet and individual column footings a width of 3 feet. If native dense glacial till is encountered at the building cornera, we recommend that cnntinuous a�all footings be designed using a mazimum ellowable bearing of 4,000 psf(pounds per squaze foot). Isolated column footings with a least dimension 0[4 (eet may be designed using an allow•a51e bearing pressure of 5,000 psf. These��alues apply G e o E n e i n < r r � 7 Flc No.OI20.150.R10106:2?2