11632 EVERGREEN WAY BASE FILE 2018-01-01 MF Import

Proposed Retail Development 1-1443 112'"Street and Hwy.99 Febcuary 26,200�► ; Everett,Washington Page 6 site and then llows southeasterly in a concrete pipe under the subject property and daylights at Highway 99 Uefore flowing under Highway 99 through a culvert. P1e understand that the proposed development would include a commercial building of a6out 146,000 squarc feet in size. Two outlots and a slortnwatcr management a:ea are proposed in the souLi^m portion of the site. At the time of preparing this report, the site grading plan and fi�iish floor elevation had not been pmvided to us. We anticipate that the exterior walls will be constructed of conerete masonry block and that steel tube columns will provide interior roof support. For the major retail building,the following loads are anticipatcd: Interior column gravity load 77 kips Estimated maximum gravity load due to severe live loading 1251dps Exterior column gravity load 40 kips Concrete masonry wall gravity loads 1.5 -2.0 ldps/lineal foot Maximum uniform floor slab live load 125 psf Maximum floor slab concentrated load 5.0 kips Zipper Zemtut Associates should be notified of any deviation from the project dcscription prescnted herein to detertnine its potential effect on t6e conclusions and recommendations prescnted herein. � SUBSURFACE CONDTTIONS The subsurface exploration program completed by ZZA included 33 hollow-stem auger borings and 21 backhoe-excavated test ;;its. The approximate locations of the explorations are prescnted on the Site and Exploration Pla�i (Figurc 1) enclosed with this report. Copies of thc boring and tcst pit logs complctcd for this evaluation are presented in Appendix A. SuUsurface conditions generally consisted of undocumented fill consisting of silty sand and silty sand with some gravel or nauve silty sand with some gravel interpreted to be weathereJ and unweathered glacial till. The fill depths wcre greatest along the westem third and ihe eastern third of the PulI-A-Part wrecking yatd property and the FiRh Wheel Place pmperty. Fill depths wcre minimal to non-existent in the center of the subject preperty. A layer of undocumentcd fill between 5 and 9'/�fcct cncountered in test pit TP-9 (Phase II,October 2002) contained significant amounts of inetal, tires and wood debris. Other random areas of ur.suitable fill should be expectcd across the site. � Surficial topsoil was encountered in several explorations acress the site and typically varied from 2 to 6 inches in thiclrness. However, a fcw explorations cr.cou�itered topsoil that varied in thiclatess from S to 18 inches. In general, near-surface topsoils had organic contents of less than 6 perccnt, although a fcw areas of surficial mateiial had organic contents of 8 to 11 perccnt. Some layers of relic topsoil were also cncountered below undocumented fills. � J-1A43,022G04 (0