6101 23RD DR W NORPRO Geotech Report 2025-07-29

June 3,2011 1 Project No. T-6578 1 Long-tern pavement performance will depend on surface drainage. A poorly-drained pavement section will be subject to premature failure as a result of surface water infiltrating into the subgrade soils and reducing their supporting capability. To improve pavement performance, we recommend surface drainage gradients of at least two percent. Some longitudinal and transverse cracking of the pavement surface should be expected over time. Regular maintenance should be planned to seal cracks when they occur. I 6.0 ADDITIONAL SERVICES Terra Associates, Inc. should review the final project designs and specifications in order to verify that earthwork and foundation recommendations have been properly interpreted and incorporated into project design. We should also provide geotechnical services during construction to observe compliance with our design concepts, specifications, and recommendations. This will allow for expedient design changes if subsurface conditions IIdiffer from those anticipated prior to the start of construction. 1 7.0 LIMITATIONS We prepared this report in accordance with generally accepted geotechnical engineering practices. This report is 1 the copyrighted property of Terra Associates, Inc., and is intended for specific application to the Norpro Building B project in Everett, Washington. This report is for the exclusive use of Norpro and its authorized representatives. No other warranty,expressed or implied, is made. The analyses and recommendations presented in this report are based on data obtained from the on-site test pits and review of available geologic information. Variations in soil conditions can occur, the nature and extent of which may not become evident until construction. If variations appear evident, Terra Associates, Inc. should be requested to reevaluate the recommendations in this report prior to proceeding with construction. 111 I I I • I I Page No. I2 I