11219 19TH AVE SE WHOLE SITE DEVELOPMENT 2018-08-13

EXECUTIVE SUMMARY At the request of Mr. Nick Abdelnour on behalf of Polygon Northwest (Client), Earth Solutions NW, LLC (ESNW) has completed a Phase I Environmental Site Assessment (ESA) for the subject site located at 11217 - 19th Avenue Southeast in Everett, Washington (see Vicinity Map - Plate 1). This Phase I ESA was prepared in general accordance with the American Society for Testing and Materials (ASTM) Standard Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Process, Designation E-1527-13. The subject site is located at 11217 - 19th Avenue Southeast in Everett, Washington. The subject site is irregular in shape and consists of eight tax parcels (Snohomish County Parcel Nos. 00574700100100, 00574700100102, 00574700100104, 00574700100203, 00574700100301, 00574700100302, 00574700100304, and 00574700100403) comprising a total of approximately 6.86 acres of land area (see Site Plan - Plate 2). The site is currently undeveloped land. ESNW understands development plans include 100 residential townhomes, utility improvements, access driveways, tracts, and other associated improvements. No hazardous materials spills, staining, stressed vegetation, or other visible signs of hazardous materials release were noted at the site. The subject site is not a recorded source of soil or groundwater contamination. No underground storage tanks (USTs) or above ground storage tanks (ASTs) were listed on the regulatory databases for the subject property or observed during the site reconnaissance. Visual observation did not reveal vent pipes or fill ports associated with underground storage tanks on the subject property. No evidence of past releases or hazardous material storage was observed on the day of the site reconnaissance. The Environmental Data Resources Inc. (EDR) database report did not identify the subject site on the federal and state regulatory databases. According to the EDR report and Washington State Department of Ecology (Ecology) records, several nearby and adjacent sites, including Chevron 91183 site (19021 — 19th Avenue Southeast), Snohomish County Used Oil Collection site (11020 — 19th Avenue Southeast), the AA Rental of Silver Lake Inc. site (10911 - 19th Avenue Southeast), and the City of Everett site (11223 - 19th Avenue Southeast), have had prior leaking underground storage tanks associated with historical gasoline service station that have impacted groundwater. These listed sites represent an environmental concern to the subject property because of the possibility that they have adversely affected subsurface conditions on the property. The remaining listed sites do not represent an environmental concern to the subject property because they are relatively distant from the subject property, located down-gradient or cross-gradient with respect to the subject property, have not affected groundwater, have completed a cleanup, and/or received a NFA determination from Ecology. The reconnaissance of the subject property and adjacent properties, a review of regulatory lists and files, a review of the subject property history, and interviews with knowledgeable persons revealed recognized environmental conditions (RECs) in connection with impacted groundwater from leaking underground storage tanks previously located on neighboring properties north, west, and southeast of the subject site. Please see section 8.1 of this report for overall recommendations regarding the subject site. Earth Solutions NW,LLC