9930 19TH AVE SE 2018-01-02 MF Import

Addendum to Geotechnical Engineering Report for Everett Home Base Proposed Wendy's at Everett Home Base February 3, 1998 NCA File No. 2134D98 Page 2 PROJECT DESCRIPTION Our understanding of the project is based on a letter dated January 16, 1998 (including a site plan and a "Soils Summary Form") from Garry Gracey of Wendy's International, and on subsequent telephone conversations with him. In addition, selected drawings were provided to us by Ruhl - Parr & Associates, Inc. (Sheets 3, 4, 7A, and 7B; stamp dated January 16, 1998). We understand the restaurant will be about 80 feet by 45 feet in plan dimensions, and that it will be a single -story, wood -framed structure with a brick veneer exw;'--r and slab -on -grade floors. Conventional shallow spread footings are planned for foundation support. The area around the building will be paved for parking and a drive -through lane. There will be a pole -supported sign at the southeast comer of the site CONCLUSIONS AND RECOMMENDATIONS We completed two test pits in the vicinity of the proposed Wendy's. These were test pits TP-1 and TP-2, located approximately at the northeast and southwest comers of the building footprint. Subsurface conditions observed in these test pits included 1 to 2 feet of loose surficial topsoil over about 1 to 2 feet of loose to medium dense silty sand (weathered glacial till). This, in turn, was underlain by dense to very dense silty sand (unweathered glacial till), which was encountered at a depth of about 3 feet at the test pit locations. Since the time of our explorations, the site has been graded, and the Wendy's parcel has been cut down about 2 to 5 feet. Medium dense to dense weathered and unweathered till typically was exposed. This material was suitable for support of the proposed improvements. However, construction activities for He-ie Base between the time of grading the Wendy's site and the start of construction at Wendy's could disturb the subgrade, and could necessitate some repair. This should be evaluated when construction for Wendy's starts, The recommendations summarized in our previous report for Home Ease should be followed for Wendy's, as they apply to the geotechnical aspects of design and construction. These include: • site preparation and grading • cut and fill slopes • structural fill • foundations • lateral pressures • site drainage • slabs -on -grade • pavements NELSON-COUVRETTE & ASSCCIATES, INC.