931 BROADWAY SEPA 016 - 008 - TEUTSCH PARTNERS Land Use Decision Documents 2025-04-22

groundwater or soil vapor and may be a source of contaminants such as radon and metals. This section of the report summarizes known geologic factors and conditions that may impact the Property with regard to environmental concerns. 2.5.1 Geology The Washington Interactive Geologic Map, provided by the Washington State Department of Natural Resources, indicates that the Property is underlain by Vashon till. These deposits consist of a dense mixture of silt, sand, gravel, and clay, which typically are characterized by relatively low vertical hydraulic conductivity. PBS Engineering + Environmental (PBS) conducted a Petroleum Contaminated Soil Excavation Cleanup Report at the Time Oil Station 168, located approximately 215 feet northeast of the Property. The report indicated that the site was underlain by approximately 10 to 12 feet of assumed fill material ranging from clay to gravel with areas of potentially native silt. The fill was underlain by silty sand and sand to depths between 24 and 26 feet below ground surface (bgs). A clayey silt layer underlain by dry brown sand was observed beneath the sand and silty sand layer. 2.5.2 Hydrologic and Hydrogeologic Environment Both the Google Earth application and the USGS Topographic Map of the Marysville, Washington Quadrangle, published in 1973, depict the topography in the vicinity of the Property as sloping downward to the northeast. The topographic map depicts the closest surface water body as Port Gardner,which is located approximately 0.7 miles to the west. Based solely upon inference from local topography, drainage patterns, and surface water flow, it appears that shallow-seated groundwater in the vicinity of the Property flows in a general northeasterly direction. Based on this inferred groundwater flow direction, potential off- Property sources of chemical contamination that might adversely affect the Property would, therefore, most likely be located to the southwest in an inferred upgradient hydrologic position relative to the Property. The PBS Cleanup Report indicated that perched groundwater was encountered at the Time Oil Station 168 site at a depth of approximately 12 to 20 feet bgs. Regional groundwater was encountered at approximately 68 feet bgs. 2.6 SUMMARY No issues of potential environmental concern were identified during our review of current Property use conditions. 3.0 USER-PROVIDED INFORMATION The following subsections summarize the information provided by the User of this Phase I ESA. 3.1 TITLE RECORDS A preliminary title report or chain-of-title report was not provided by the client to SoundEarth for review prior to production of this report. These documents may provide information about the Property, including ownership and other interests in the land, easement, and liens. Not all liens, defects, and encumbrances affecting title to the land may be included in the preliminary title report. Considering the SoundEarth Strategies,Inc. 4 February 16,2015