3815_PGSF WMVD Pkg 2_Vol 4-2_03.03.2026_BXWA_Certified

ASPECT CONSULTING PROJECT NO. AS190583A-08  MAY 21, 2025 FINAL 5 included in Appendix B of the RI/FS Work Plan (Aspect, 2013c). A brief description of what is depicted on each map is described below: 1902 Sanborn Map. This map depicts that the shoreline of the Upland Area was initially several hundred feet farther east of its current position. In addition, the northern portion of the Upland Area was occupied by the Clark-Nickerson Lumber Company, and the Everett Flour Mill Company occupied a smaller area south of it. Areas south of the Everett Flour Mill Company were historically occupied by residential structures (“squatters’ shacks”). Additional details regarding these facilities are provided in the ARA. 1914 Sanborn Map. This map depicts minor changes in the position of the shoreline. Additional development of both the Clark-Nickerson Lumber Company and the Everett Flour Mill Company, and removal of the majority of the residential structures on the southern portion of the Site, is also depicted. Reportedly, in 1915, the City of Everett passed an ordinance granting Standard Oil Company (now Chevron) permission to construct a fuel storage-tank farm on the south end of the Upland Area; that facility is not apparent on the 1914 Sanborn map, and the date of its construction is uncertain, but a 1930 Great Northern Railway Map shows the Standard Oil tanks present at that time (AMEC, 2010). 1957 Sanborn Map. This map depicts significant development across the Upland Area. The name of the Clark-Nickerson Lumber Company facility had been changed to North Star Lumber Company and included minor developmental changes. The Everett Flour Mill Company facility was no longer depicted on the 1957 map, but the area proximate to the central portion of the Upland Area included significant development and was identified as Soundview Pulp Company. At the south end of the Upland Area, the Associated Oil Company facility was also depicted on the 1957 map and included three aboveground storage tanks (ASTs) with unlabeled capacities located in the asphalt-paved area on the north side of K-C’s warehouse building. The position of the shoreline across much of the area has extended hundreds of feet westward relative to the 1914 map, in areas identified as Scott Paper Soundview Division Pulp and Paper Mill. The major placement of dredge fill and westward extension of the Upland Area to accommodate the new mill reportedly occurred in 1929–1930 (Shannon and Wilson, 2014). 2.2.3 History of Pulp and Paper Mill Operations The Puget Sound Pulp and Timber Company was formed in 1929 and operated the pulp mill until 1932 when the Soundview Pulp Company assumed ownership. The pulp mill produced bleached sulfite pulp and various tissue products, and consisted of five digesters and two pulp drying machines. The Soundview Pulp Company continued operations at the Site and was reportedly the largest single sulfite pulp-producing plant in the world when it merged with Scott Paper Company in 1951. Following the merger, the paper mill was constructed adjacent to the pulp mill, with construction complete in 1954. Four Scott Paper Company machines were added to the facility between 1953 and 1955. The mill facility also originally contained a log pond that was used for temporary storage of logs that were rafted to the mill and chipped on Site for use in the pulp operations. Wood chipping and log rafting operations were discontinued at the mill in 1970, according to a 1994 Scott Paper Company letter to CH2M Hill. The log pond was reportedly filled