1000 INDUSTRY ST 2018-01-02 MF Import

� January 28, 200i Project No. T-�6�9 1 • Slab-on-gradefloors I • Retaining walls • Subsurface drainage � • Utilitics • Pavements IIt sUould be noted that the recommendations oatlined in this report regarding drainage are associated with soil strength, desien earth pressures, erosion, and stability. Design and performance issues with respect to moismrc as I it rclates to the structure em�ironment (i.e., humidity, mildew, mold) are beyond Terra r�ssociates' purview. A building envclopc specialist or contractor should be consulted to address these issues, as needed. � 3.0 S17'E COYnITfONS I 3.1 Surfacc The project site is curcendy vacant, measuring approximately seven acres. The site consists of three lots located along the south side of Indu�.ry Street, extcnding ��est from tl�e in�erscction of Industry Sveet and Associated � Boulevard at the Mountainvi:av Busincss Center in Gverett, \Vashington. Tlie approximate location of the site is shown on Figure 1. The sitc �vas pre��iously operated as a gravcl mining operntion from 1995 to 2001. Restoration or reclamation of the mined areas occurred concurrent with the mining activity. Based on review o£monitoring reports prepared by I the gmtechnical consultant who monitored the reclamation, approximately 40 feet of strucmral till matcrial was placed to restore this area to its current elevatioi�. 1 CurtenUy, �I�e wrbs and roadway utilities along Industry Street and Associated [3oulevard I;ave been constructed. and the road surfaces graded and pa��ed witl�the first liti of asphalt. Surface grades along thc lots siope down to thc north and [ndustry Strect at an approximate five percent grade. \Ve obse��ed an approximate three-foot high Isoil beim ex[ending along the site's south property line, and several small temporary sronnwater detention ponds along the north end of the lots adjacent to Industry Strcet. Seceral large-diameter concrete storm��ater pipe sections are curcendy stockpiled on the ea�t end of the site. The vegetation on the lots consists of short field grass � in its early s[ages of gro�vlh. The site is bordered �cith ttndeecloped Lot 6 to ilte west, an existing ��archouse to the soudi, .4ssociated I3oulevard to the east, and Indusiry Street to the nortli. � 31 Soils 7'he soils we observed in the test pits consi;t of compacted structural fill composed of sand ��ith silt overlying silty sand with varying amounts of�gra��cl. In general, d�e upper sand with silt fill was wet, medium dense, and rnnged Gom 2 to l2 inchcs thick. The underlying silty sand with grneel fill was moist and medium dense to very dense. In general, the soils were �ecll compacted, mostly granular and �vell mixed. The only variation in these soil conditions was observed in Test Pit TP-d ��herc Ihe upper one-foot of fill contained some straw and grass, and�he sand with silt lill extcnded to a dep[h oC titie fect bclow existiug surface grades. Pagc No. 2 1 �1�