For 30 years, a wood-treating facility applied creosote, pentachlorophenol, and solutions of copper, chromium, and arsenic to wood at the Lake River industrial site. When the company abandoned the site, which is adjacent to the Ridgefield National Wildlife Refuge, Maul Foster & Alongi helped the Port of Ridgefield with negotiations that allowed the state to manage the cleanup and keep the site off the federal Superfund list. After MFA identified a large source of nonaqueous-phase liquids (NAPL) on the site, the state required emergency action. With MFA's assistance, the Port obtained over $14 million in state and federal cleanup funds to install a steam-based remediation system to remove the NAPL.
Maul Foster & Alongi provides ongoing environmental site investigation, remedial design, regulatory negotiations with the Oregon Department of Environmental Quality and the U.S. Environmental Protection Agency, and cost-recovery support for a silicon wafer manufacturing facility located in the Portland Harbor on the Willamette River. MFA has designed and implemented a complex groundwater assessment to characterize volatile organic compounds in groundwater under the site and in the Willamette River and its sediments, and has assisted with identification of potentially responsible parties and cost recovery associated with contamination caused by past operators and adjacent properties. MFA also provides strategic support for the site's participation in the Lower Willamette Group.
As part of environmental due diligence associated with the purchase of a Brownfield site in the Portland Harbor, Maul Foster & Alongi, Inc. (MFA) conducted a fast-track Phase II environmental site assessment (ESA) involving soil, groundwater, and sediment sampling and analyses. The results of the Phase II ESA allowed MFA to negotiate a limited scope of work for a soil remedial investigation/feasibility study (RI/FS) as part of Prospective Purchaser Agreement (PPA) with the Oregon Department of Environmental Quality (DEQ). The PPA released the purchaser from liability associated with historical site contamination and capped the cost of the RI/FS and soil remediation to encourage cleanup and economic reuse of the property. The scope of work was designed to characterize the nature and extent of chemicals of concern in upland soil as well as to provide information for future site redevelopment. Chemicals of interest included metals, polychlorinated biphenyls, volatile organic compounds, and petroleum hydrocarbons. MFA managed and implemented a large RI for the upland portion of the site and prepared RI and human health and ecological risk assessment (RA) reports. MFA negotiated the scope of work to complete an ecological RA for soil, and prepared Level I and Level II ecological RAs and an FS for soil. The record of decision for the site was issued in 2005. Possible sale and redevelopment of the site are pending.
Maul Foster & Alongi has completed a remedial investigation (RI) and feasibility study (FS) for the site, including complex human health and ecological risk assessments (RAs) for soil, groundwater, and river sediment, conducted between 1996 and 2005. The site is currently used for barge construction and was historically used for shipbuilding and dismantling. The site is located in the South Waterfront district in Portland, Oregon, where land use is rapidly transitioning to a mix of residential and commercial. The client's intent is to continue manufacturing operations and later redevelop the property for mixed commercial and residential uses. Working closely with the client, its attorneys, and the Oregon Department of Environmental Quality (DEQ), MFA ensured that future remedial measures will align with development, greenway, and in-water habitat-enhancement projects. Detailed remediation scenarios and cost estimates were prepared as part of the FS and for litigation assistance. MFA successfully negotiated remedies that have a high degree of cost certainty, which was essential for the client.
Soil remediation will include excavation of hot spots of contamination and capping. Extensive evaluation of sediments was performed, and a remedial-alternatives comparison was conducted. Sediment remediation will include capping and natural-recovery monitoring. The record of decision for the site was issued in 2005. The consent decree is pending. Implementation of upland source control measures and remediation of site soil and river sediments will occur between 2006 and 2016.
