This dataset contains the results of batch experiments to evaluate the mobility of major and trace elements from the Farmington Lake core 4 sediments. The sediments were exposed to three different environmentally relevant reagents, deionized water, bicarbonate, and acetic acid. The sediment cores were collected in November 2019.

These datasets provide information about the physical properties, total sediment chemistry, and batch experiment chemistry (to evaluate element mobility) of sediment cores from the Farmington Lake reservoir in Farmington, NM. The sediment cores were collected in November 2019.

These datasets provide information about the physical properties, total sediment chemistry, and batch experiment chemistry (to evaluate element mobility) of sediment cores from the Farmington Lake reservoir in Farmington, NM. The sediment cores were collected in November 2019.

These data provide the initial field observations of reservoir sediments, from cores collected in November 2019, including grain size, color, bioturbation, redox indicators, and reaction with hydrogen peroxide and hydrochloric acid. Total sediment chemistry data from the cores are also included.

This data-release component documents chemical analyses of soil samples collected by the U.S. Geological Survey (USGS) in Lakeport (Lake County, California) on July 12, 2022. Environmental samples were collected at selected sites in Lakeport to assess the effects of lead-based paint on soil chemistry. This sampling was made as part of a broader study to attribute sources of lead in soils in cooperation with the California Department of Toxic Substances Control (DTSC) for their Lead-Acid Battery Recycling Facility Investigation and Cleanup (LABRIC) program. A total of five soil samples plus one replicate across four properties were collected proximal to selected structures suspected to have legacy coatings of lead-based paint. This component of the data release contains two tab-delimited text files and associated metadata describing results. The Lakeport_soils.txt file contains results of soil chemical analyses for individual soil samples sieved to three size fractions (less than 2 millimeters [mm], 0.063 mm to 0.25 mm, and less than 0.063 mm). Concentrations of elements included in this data release analyzed by inductively coupled plasma mass spectrometry or optical-emission spectrometry after multi-acid digestion include: aluminum, calcium, iron, potassium, magnesium, sodium, sulfur, titanium, silver, arsenic, barium, beryllium, bismuth, cadmium, cerium, cobalt, cesium, copper, gallium, indium, lithium, manganese, molybdenum, niobium, nickel, phosphorus, lead, rubidium, antimony, scandium, selenium, tin, strontium, tantalum, tellurium, thorium, thallium, uranium, vanadium, tungsten, and zinc. The Lakeport_soils_replicates.txt file contains comparison results for the aforementioned three size fractions for one of the soils that was sampled in duplicate.

This data-release component documents chemical analyses of soil samples collected by the U.S. Geological Survey (USGS) in Lakeport (Lake County, California) on July 12, 2022. Environmental samples were collected at selected sites in Lakeport to assess the effects of lead-based paint on soil chemistry. This sampling was made as part of a broader study to attribute sources of lead in soils in cooperation with the California Department of Toxic Substances Control (DTSC) for their Lead-Acid Battery Recycling Facility Investigation and Cleanup (LABRIC) program. A total of five soil samples plus one replicate across four properties were collected proximal to selected structures suspected to have legacy coatings of lead-based paint. This component of the data release contains two tab-delimited text files and associated metadata describing results. The Lakeport_soils.txt file contains results of soil chemical analyses for individual soil samples sieved to three size fractions (less than 2 millimeters [mm], 0.063 mm to 0.25 mm, and less than 0.063 mm). Concentrations of elements included in this data release analyzed by inductively coupled plasma mass spectrometry or optical-emission spectrometry after multi-acid digestion include: aluminum, calcium, iron, potassium, magnesium, sodium, sulfur, titanium, silver, arsenic, barium, beryllium, bismuth, cadmium, cerium, cobalt, cesium, copper, gallium, indium, lithium, manganese, molybdenum, niobium, nickel, phosphorus, lead, rubidium, antimony, scandium, selenium, tin, strontium, tantalum, tellurium, thorium, thallium, uranium, vanadium, tungsten, and zinc. The Lakeport_soils_replicates.txt file contains comparison results for the aforementioned three size fractions for one of the soils that was sampled in duplicate.

This dataset contains measurements of water chemistry taken from experimental incubation of sediment cores collected from the Fox and Duck rivermouths during the 2016 growing season. In addition, some characteristics of the sediment were recorded. This data can be used to generate estimates of nutrient change over time, due to flux of nutrients from the sediments. These flux estimates (or release rates) can be used to estimate total flux from sediments to the surface waters over the course of the 2016 growing season. This dataset is a subset of a larger effort to quantitatively estimate the effect of rivermouths on nutrient loading to Lake Michigan.

This dataset contains measurements of water chemistry taken from experimental incubation of sediment cores collected from the Fox and Duck rivermouths during the 2016 growing season. In addition, some characteristics of the sediment were recorded. This data can be used to generate estimates of nutrient change over time, due to flux of nutrients from the sediments. These flux estimates (or release rates) can be used to estimate total flux from sediments to the surface waters over the course of the 2016 growing season. This dataset is a subset of a larger effort to quantitatively estimate the effect of rivermouths on nutrient loading to Lake Michigan.

Four sediment cores were collected from the San Juan Generation Station reservoir. The sediments from each of these cores were described for physical properties and analyzed for inorganic elements. These data provide the initial field observations of reservoir sediments including grain size, color, and reaction with hydrogen peroxide and hydrochloric acid. Sediment inorganic chemistry data are also provided.

Four sediment cores were collected from the San Juan Generation Station reservoir. The sediments from each of these cores were described for physical properties and analyzed for inorganic elements. These data provide the initial field observations of reservoir sediments including grain size, color, and reaction with hydrogen peroxide and hydrochloric acid. Sediment inorganic chemistry data are also provided.