1800 41ST ST 2023-06-23 - Laserfiche WebLink

T E RRA ASSOCIATES, Inc. Consultants in Geotechnical Engineering, Geology and Environmental Earth Sciences December 17,2015 Project No.T-7332 Mr. Bill Helsley Site Development Associates 1724 W Marine View Drive, Suite 140 Everett,Washington 98201 Subject: Geotechnical Engineering Evaluation Everett Parking 1800—41 st Street Everett, Washington Dear Mr. Helsley: As requested, we have completed a geotechnical engineering evaluation for the proposed parking lot expansion at the subject project. The purpose of our work was to characterize shallow soil conditions at the site and provide recommendations for subgrade preparation and pavement section design. We completed our work is accordance with our authorized proposal dated October 3, 2015. The following summarizes our findings and recommendations. Site and Soil Conditions The planned lot expansion areas lie south and east of an existing office building located at the subject project 111 address. The areas are currently grass covered and landscaped. To characterize soil conditions, we hand excavated five test holes to a maximum depth of three feet below existing surface grades. The approximate location of the test holes is shown on the attached exploration location plan Figure 1. Soil conditions encountered at the test holes consisted of three to ten inches of sod and organic topsoil followed by granular fill composed mostly of sand with varying silt and gravel content. At Test Hole TH- 1 excavated furthest to the south, older asphalt pavement was encountered below the fill at a depth of two feet. Minor seepage of groundwater was observed at Test Holes TH-1 and TH-2 at depths of four to eight inches. The preceding discussion is intended as a general review of ground conditions observed in the test holes. For more detailed descriptions, please refer to the test hole logs attached as Figures 2 through 6. 12220 113th Avenue NE, Ste. 130, Kirkland, Washington 98034 Phone (425)821-7777 • Fax (425)821-4334