2600 FEDERAL AVE 2021 PORT OF EVERETT 2025-09-29

Substantive Requirements Review Landau Associates 2.2.3 Pavement Cores To support design of a secure cargo alley concept, west of Federal Avenue and south of the site, LAI advanced two pavement cores (C-1 and C-2) in asphalt-paved driveways used by Port tenants. The approximate locations of the pavement cores are shown on Figure 2. Table 1 includes the asphalt and base course thickness observed at each pavement core location. Table 1.Observed Pavement and Base Course Thickness Pavement Core Location Asphalt Thickness Base Course Thickness (inches) (inches) C-1 6 6 C-2 5.5 8 2.3 Environmental Overview/Cleanup Status The site is the former location of a saw milling and pulp and paper manufacturing operation, first active in the late 1800s. Additionally, bulk petroleum was stored at the site. Releases of hazardous substances occurred as a result of the pulp and paper manufacturing operations and the petroleum bulk storage.The Washington State Department of Ecology (Ecology) listed the site under the Model Toxics Control Act and assigned it Cleanup Site ID No. 2569. In December 2012, K-C and Ecology entered Agreed Order No. DE 9476 (the AO). Per the AO, remedial site activities include completion of a remedial investigation and feasibility study, preparation of a draft cleanup action plan, and implementation of an interim action to remove contamination encountered during demolition of the paper mill (First Interim Action). In conjunction with demolition activities, K-C removed contaminated soil and groundwater throughout the site in 2013 and 2014. Crushed material (CM fill) from the mill demolition was left on site, with layers ranging from 1 to 5 ft thick. At the time of this writing, K-C is in the process of removing the CM fill, under the supervision of the Snohomish Health District and in accordance with the Plan of Operations for CM Removal (DEA 2018). The first amendment to the AO (AO First Amendment) was issued in November 2019. The AO First Amendment provided for a Second Interim Action to remove additional soil and/or groundwater contamination, to decommission inactive stormwater outfalls that pose a threat to release and transport to the East Waterway, to inspect and cleanup active stormwater lines, and to monitor the pH in groundwater during removal of the CM fill. The Second Interim Action is currently underway. Based on LAI's site observations, K-C is using fine to medium sand with little to no gravel or fines to restore site grades. Generally, the imported sand material is placed in 12-inch loose lifts and compacted to at least 92 percent of the maximum dry density. Despite the Contractor's efforts, the sand material is easily disturbed, and many trucks became stuck during CM fill-removal operations. Geotechnical Engineering Report 0121049.040.041 Norton Terminal Development&MTCA 3rd Interim Action 2-5 May 7,2021