A5081314370- Water Quality and Resources Studies
- Groundwater flow and contamination studies
- Groundwater and Isotope Geochemistry
- Hydrology and Watershed Management Studies
- Toxic Organic Pollutants Impact
- Hydrology and Sediment Transport Processes
- Mercury impact and mitigation studies
- Fish Ecology and Management Studies
- Coastal and Marine Dynamics
- Hydrocarbon exploration and reservoir analysis
- Geological Modeling and Analysis
- Atmospheric and Environmental Gas Dynamics
- Soil and Water Nutrient Dynamics
- Aeolian processes and effects
- Microbial Fuel Cells and Bioremediation
- Flood Risk Assessment and Management
- Engineering and Material Science Research
- Radioactive element chemistry and processing
- Radioactive contamination and transfer
- Pharmaceutical and Antibiotic Environmental Impacts
- Arctic and Antarctic ice dynamics
- Water Treatment and Disinfection
- Hydrological Forecasting Using AI
- Coastal and Marine Management
- Marine and fisheries research
United States Geological Survey
1987-2020
Washington Water Science Center
2015-2020
National Oceanic and Atmospheric Administration
2019
Pacific Science Center
2015
Pacific Coastal and Marine Science Center
2015
Naval Undersea Warfare Center
2006
Pennsylvania State University
1987
Organic contaminants, such as pharmaceuticals and personal care products (PPCPs), pose a risk to water quality the health of ecosystems. This study was designed determine if coastal community lacking point sources, waste treatment plant effluent, could release PPCPs, herbicides, plasticizers at detectable levels their surface groundwater. Research conducted in Liberty Bay, an embayment within Puget Sound, where 70% population (∼10,000) uses septic systems. Sampling included collection...
Abstract Atmospheric deposition, soils developed from bedrock, a natural bog, gas wells, and ski area were all investigated as possible sources of water quality degradation for four streams on Laurel Hill in southwestern Pennsylvania where fish kills have been reported since 1960. An intensive study the chemistry atmospheric soil leachate, stream populations was conducted these basins during 1980–1981 with emphasis dormant season periods runoff snowmelt rain. Although bedrock geology found...
Each year, an estimated load of 6.5 million tons sediment is transported by rivers to Puget Sound and its adjacent waters—enough cover a football field the height six Space Needles. This highly uncertain because studies available sediment-load data are sparse historically limited specific rivers, short time frames, narrow range hydrologic conditions. The largest loads carried with glaciated volcanoes in their headwaters. Research suggests 70 percent delivered from 30 shoreline erosion, but...
Anaerobic oxidation of [1,2-C]dichloroethene to CO(2) under Mn(IV)-reducing conditions was demonstrated. The results indicate that oxidative degradation partially chlorinated solvents like dichloroethene can be significant even anoxic and demonstrate the potential importance Mn(IV) reduction for remediation groundwater contaminants.
ABSTRACT A shallow, RDX (hexahydro-1,3,5-trinitro-1,3,5-triazine)–contaminated aquifer at Naval Submarine Base Bangor has been characterized as predominantly manganese-reducing, anoxic with local pockets of oxic conditions. The potential contribution microbial degradation to localized decreases observed in concentrations was assessed sediment microcosms amended [U-14C] RDX. Greater than 85% mineralization 14C-RDX 14CO2 under native, Significant increases the were NO3-amended or...
First posted December 22, 2016 For additional information, contact: Director, Washington Water Science CenterU.S. Geological Survey934 Broadway, Suite 300Tacoma, 98402http://wa.water.usgs.gov Recent advances in suspended-sediment monitoring tools and surrogate technologies have greatly improved the ability to quantify concentrations estimate daily, seasonal, annual fluxes from rivers coastal waters. However, little is known about chemical composition of suspended sediment, how it may vary...
ABSTRACT: Regression models to predict baseflow alkalinity from basin hydrogeology were developed and verified for headwater streams on the Laurel Hill anticline in southwestern Pennsylvania. Predicted alkalinities then used estimate sensitivity acidification presence of trout ( Salvelinus fontinalis ) populations 61 streams. Sensitivity classifications by surveying populations. Geologic variables relating carbonate rock burial depth, extent recharge areas, length stream channel flowing...
First posted May 21, 2018 For additional information, contact: Director, Washington Water Science Center U.S. Geological Survey 934 Broadway, Suite 300 Tacoma, 98402 Operable Unit 2, Area 8, at Naval Base Kitsap, Keyport is the site of a former chrome-plating facility that released metals (primarily chromium and cadmium), chlorinated volatile organic compounds, petroleum compounds into local environment. To ensure long-term protectiveness, as stipulated in Fourth Five-Year Review for site,...
Discharge to Surface Water ……………… Summary and Conclusions …………………………………………………………………… References Cited ……………………………………………………………………………… Appendix A. Quality Assurance Control of U.S. Geological Survey 2004 Geochemical Sampling ………………………………………………………………………………… Temperature in degrees Celsius (°C) may be converted Fahrenheit (°F) as follows: °F=(1.8×°C)+32.Specific conductance is given microsiemens per centimeter at 25 (µS/cm 25°C).Concentrations chemical constituents water are either milligrams...
The U.S. Army disposed of waste trichloroethene (TCE) and other materials in the East Gate Disposal Yard near Logistics Center on Fort Lewis, Washington, from 1940s to early 1970s. As a result, ground water contaminated with primarily TCE extends more than 3 miles downgradient Yard. site is underlain by complex heterogeneous sequence glacial non-glacial deposits that have been broadly categorized into an upper lower aquifer (the latter referred as sea-level aquifer). contamination was...
This report presents data collected for two U.S. Geological Survey field sampling projects related to mercury (Hg) in Sinclair Inlet: (1) the Watersheds Sources Project that evaluated sources of Inlet during December 2007 March 2010, and (2) Methylation Bioaccumulation Project, a comprehensive examination biogeochemistry sediment, water, zooplankton August 2008–February 2010. For Watershed project, nonpoint point from Bremerton naval complex (BNC) were by using filtered total particulate...
First posted September 29, 2017 For additional information, contact: Director, Pacific Coastal and Marine Science CenterU.S. Geological SurveyPacific Center 2885 Mission St. Santa Cruz, CA 95060 Large rivers carry terrestrial sediment, contaminants, other materials to the coastal zone where they can affect marine biogeochemical cycles ecosystems. This U.S. Survey study combined river sediment geochemistry organic contaminant analyses identify riverborne associated contaminants at shoreline...
First posted October 21, 2020 For additional information, contact: Director, Washington Water Science CenterU.S. Geological Survey934 Broadway, Suite 300Tacoma, 98402 Chlorinated volatile organic compounds (CVOCs) have migrated to groundwater beneath a former 9-acre landfill at Operable Unit 1 (OU-1) on Naval Base Kitsap, which was active from the 1930s through 1973 Keyport Peninsula, in Kitsap County, Washington. Biodegradation of CVOCs OU-1 limits mass dissolved-phase that discharges...
The majority of filtered total mercury in the marine water Sinclair Inlet originates from salt flowing Puget Sound. About 420 grams are added to each year atmospheric, terrestrial, and sedimentary sources, which has increased concentrations (0.33 nanograms per liter) greater than those Sound (0.2 liter). category with largest loading included diffusion porewaters sediment column discharge through stormwater drain on Bremerton naval complex, Bremerton, Washington. However, few data available...
First posted September 7, 2018 For additional information, contact: Director, Washington Water Science CenterU.S. Geological Survey934 Broadway, Suite 300Tacoma, 98402 The sediments of Sinclair Inlet, in Puget Sound, Washington, have elevated levels contaminants including mercury. Bremerton Naval Complex is adjacent to and has known areas historical soil mercury contamination. U.S. Survey, cooperation with the Navy, been investigating potential for sources on recontaminate recently...