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Full-Text Articles in Physical Sciences and Mathematics

Sampling Potential Hydrologic Impacts From An Underground Fire Lit By The Gray Road Fire, West Medical Lake, Isaac T. Dunmore Jul 2024

Sampling Potential Hydrologic Impacts From An Underground Fire Lit By The Gray Road Fire, West Medical Lake, Isaac T. Dunmore

2024 Symposium

Eastern State Hospital (ESH) dumped and buried construction related material along the south west shores of West Medical Lake. Based on aerial photos from 1957, the dump was established with pine trees growing on the landfill. The dump is approximately 400 feet long, 50 ft wide and about 30 ft deep or about 6000,00 cubic feet of material. On August 18, 2023, during the Gray Road Fire, the buried site was ignited and has since continued to burn underground. Department of Health Services hired a consultant to analyze soils from the dump using the TCLP method for standard RCRA metals …


Pfas Variation Through A Wastewater Treatment Facility Process, Aaron A. Fuzak, Chad J. Pritchard Jul 2024

Pfas Variation Through A Wastewater Treatment Facility Process, Aaron A. Fuzak, Chad J. Pritchard

2024 Symposium

PFAS concentrations were measured at a wastewater treatment facility to see the effect the treatment process had on PFAS levels. Samples were collected following an initial clarifier, second clarifier, sand filtration system, ultraviolet light purification system, and then from the effluent produced by the facility and analyzed using EPA Method 533. The effluent from the treatment facility flows from a pipe that enters a wetland, where it evaporates or infiltrates the groundwater. Municipal and septic treated systems are considered possible point sources for PFAS contamination in groundwater. Sampling levels of PFAS after treatment will give insight into the concentrations and …


Preliminary Analysis Of Per-And Polyfluoroalkyl Substances (Pfas) In Surface Waters Of The West Plains Region Of Spokane County, Jerusha Hampson Jul 2024

Preliminary Analysis Of Per-And Polyfluoroalkyl Substances (Pfas) In Surface Waters Of The West Plains Region Of Spokane County, Jerusha Hampson

2024 Symposium

Per-and Polyfluoroalkyl Substances (PFAS) have become a national issue as regulatory limits for these toxins have just recently been put into the Clean Water Act. The West Plains has been significantly impacted by PFAS contamination due to the decades-long use of aqueous film-forming foam (AFFF) for firefighting training at both Fairchild Airforce Base and the Spokane International Airport. Though research is still underway, it is known that PFAS contamination in West Plains groundwater is significant and widespread. This study focuses on West Plains surface waters, as there is currently less information about how these water bodies are impacted by PFAS. …


Groundwater Modeling Of The West Plains, Wa, Erin L. Toulou, Chad Pritchard Phd, Lauren Stachowiak Phd Apr 2022

Groundwater Modeling Of The West Plains, Wa, Erin L. Toulou, Chad Pritchard Phd, Lauren Stachowiak Phd

2022 Symposium

Located in Eastern Washington in the West Plains Region sits a plateau of Columbia River Basalts between Deep Creek, Hangman Creek, and south of the Spokane River. Primarily in Airway Heights, the amount of drinking water as well as the quality of the water has affected residents in the area. The most recent issue is PFAS contamination, which is thought to negatively affect human health and is found in drinking water wells across the West Plains. We can interpret subsurface geology using new well logs from Fairchild Air Force Base and in the Palisades area. When using ArcGIS PRO, well …


Population Dynamics And Water Resource Consumption In Spokane, Wa, Daniel Jesus Castillo Jan 2018

Population Dynamics And Water Resource Consumption In Spokane, Wa, Daniel Jesus Castillo

EWU Masters Thesis Collection

No abstract provided.