1605 SE EVERETT MALL WAY BOBS BURGER AND BREW Geotech Report 2025-07-25

JJMD Buildings Bobs Burger&Brew JN 09266 ' November 18,2009 Page 2 ' There are buried utilities below various areas of the site. In the south, central portion of the proposed building is a large storm sewer manhole. The inlet pipe for this manhole runs northwest ' to southeast and the outlet pipe from the manhole angles off toward the southwest. During our visit to the site we observed seepage flowing into the manhole around the upper riser, even though it had not rained for several days. It is possible that this seepage is the result of shallow perched water. An electrical line extends between the two light poles located on the east and west sides of ' the site. There are also buried electrical lines in a easement extending.through the sloped grass area along the north side of the site. Southeast Everett Mall Way is situated to the east of the site. To the south are paved drive and parking areas. The Top Foods store is to the west. Immediately north of the site is a narrow paved drive lane for the adjacent cemetery. There is no curb or storm drainage for this small road. ' SUBSURFACE CONDITIONS The subsurface conditions were explored by excavating test pits at the locations shown on the Site Exploration Plan, Plate 2. The field exploration program was based upon the proposed construction and required design criteria, the site topography and access, the subsurface conditions revealed during excavation, and the scope of work outlined in our proposal. The test pits were excavated on November 12, 2009 using a rubber-tire backhoe. A geotechnical engineer from our staff observed the excavation process, logged the seven test pits, and obtained representative samples of the soil encountered. "Grab" samples of selected subsurface soil were collected from the backhoe bucket. The Test Pit Logs are attached to this report as Plates 3 ' through 6. Soil The test pits excavated in the existing paved parking area all encountered very similar soil conditions. The upper 6 to 8 inches of each test pit consisted of 2 inches of asphalt paving, underlain by gravelly silty sand fill. Beneath this fill, all five test pits found dense, gray ' gravelly silty sand. This undisturbed native soil has•been glacially compressed and its density increased below a depth of approximately 3 feet. This dense to very dense soil is locally referred to as glacial till. There was no natural topsoil or weathered layer over the glacial till. The two test pits excavated in the northern landscape area also found glacial till at a relatively shallow depth. The uppermost soil unit consisted of sod and topsoil that was less ' than a total 12 inches thick. The weathered layer was also removed from above the glacial till in this area of the site. The glacial till was difficult to excavate deeper than 4 to 5 feet. Additionally, one of the test pits encountered a small boulder. It is relatively common to encounter at least scattered boulders within glacial till soils. iWe expect that deeper fill will be encountered in areas that have been disturbed by past utility excavation, such as around the storm manhole. 1 GEOTECH CONSULTANTS,INC.