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

ASPECT CONSULTING 58 FINAL PROJECT NO. AS190583A-08  MAY 21, 2025 establish a public access corridor from Norton Avenue to the East Waterway along the southern boundary of its Utility Property. The access path will be paved to prevent exposure to underlying soils and will be fenced on both sides for physical safety reasons. There will be no public access to the Port’s Norton Terminal. (C) Food is not currently grown/raised on the Upland Area property, nor will it be in the redeveloped condition. (D) Operations at the Upland Area property will be characterized by truck traffic, noise and, potentially, the use and storage of chemicals. (E) The surface of the Upland Area property will be mostly covered by buildings and paved parking lots and access roads that minimize potential exposure to the soil. (F) Apart from the City’s potential public access corridor, the redeveloped Upland Area property will not contain facilities serving the general public. An environmental covenant will be executed as a component of the Cleanup Action Plan (CAP) requiring that the Upland Area be used only for industrial uses, as defined in MTCA, unless additional remedial actions are conducted to meet cleanup standards for unrestricted use, as approved and formally documented by Ecology. The environmental covenant will also include other cleanup-related restrictions, including ensuring protections within the Warehouse Subarea if developed for non-industrial (commercial) use. Section 8.6.5 provides additional detail regarding the environmental covenant. 5.1.1.1 City Utility Property The Utility Property includes the former Kimberly Clark industrial WWTP (Figure 5-1) and qualifies as traditional industrial use under MTCA. The City intends to redevelop and reuse the majority of existing infrastructure following a selective demolition process occurring in 2024. Additional infrastructure will be constructed, as needed, and the Utility Property will be repaved following construction activities to meet requirements in the property’s CAP Memorandum. As agreed to with Ecology, the City will record a restrictive environmental covenant for its Utility Property to ensure that its land use remains industrial (Floyd|Snider, 2021). 5.1.1.2 Distribution Warehouse Subarea The Port may consider repurposing the distribution warehouse for commercial use in the future. The viability of this option has yet to be determined but the RI has been prepared to address potential commercial receptors and exposure pathways under the assumption that the warehouse may be used in the future for commercial use purposes and will not include any full-time residents. In accordance with MTCA, land uses other than residential and industrial (e.g., commercial, recreational, etc.) shall not be used as the basis for establishing cleanup levels (WAC 173-340-708(3)(d)(ii). The potential future commercial land use scenario associated with the Distribution Warehouse Subarea is identified as an alternate reasonable maximum exposure (RME) scenario for the purposes of assessing the protectiveness of the remedy. Except for soil gas and indoor air media associated with the vapor intrusion pathway, PCLs for commercial workers are conservatively based on