The Missoula White Pine Sash (MWPS) facility is an approximately 40-acre property located at 1301 Scott Street at the intersection of Scott and Stoddard Streets on Missoula’s north side. MWPS was a precision wood, window and door component manufacturing facility which operated from the 1920s through 1996. From the mid-1930s until 1987, milled wood products were dipped into mixtures of pentachlorophenol (PCP) and petroleum products. Some of these mixtures were released into the environment, contaminating soil and groundwater with PCP, petroleum hydrocarbons, and dioxins/furans. The Montana Department of Environmental Quality (DEQ) determined that Huttig Building Products, Inc. (Huttig) is liable for remediation of the MWPS Facility.

The Record of Decision (ROD) is the document that presents DEQ’s selected remedial action for the MWPS Facility. The ROD was issued in February 2015. Following completion of the ROD, Huttig completed the Remedial Action Work Plan (RAWP), which serves as a roadmap for phasing and implementing the remedy at the Facility. The RAWP was approved by DEQ in September 2015. The next steps at the facility include characterization of contaminated soils to refine volume estimates and ensure compliance with disposal requirements, followed by excavation and treatment/disposal of certain contaminated soils throughout the facility as well treatment of groundwater and long-term monitoring. DEQ will add information to this page, as well as provide updates as cleanup progresses at the facility.