Images

Wolf Creek site map modified from Figure 1 of 'Organic geochemistry and toxicology of a stream impacted by unconventional oil and gas wastewater disposal operations, Orem and Others, 2017'.  

United States occurrence of microcystins in lakes in the contiguous 48 U.S. states categorized by World Health Organization relative probable health risk. WHO low, moderate, and high refer to the relative human recreational health thresholds for microcystin exposure. Map not shown to scale.

Aquariums where male fathead minnows were exposed to the effluent from a wastewater treatment plant

Organic Chemistry Research Laboratory -- Sacramento, California. Small sample bottles with pollen inside

Early life stage exposure laboratory study

Bioactive Chemicals Research Laboratory — Boulder, Colorado. Fathead minnows (Pimephales promelas) swimming in an experimental aquarium. The aquarium is part of an experiment to assess endocrine disruption in fish.

Environmental Chemistry Laboratory — Columbia, Missouri. Customized extraction system

National Wildlife Health Center — Madison, Wisconsin. Digestive gland from a freshwater snail (Lymnaea stagnalis)

Hydrogeophysics Branch -- Storrs, Connecticut

Scientist preparing samples in a laboratory for quantitative polymerase chain reaction (PCR) analysis

Diagram showing antrhopods, fish, and other aquatic life in the area of an oil and gas spill.

Filtration system used for processing samples using a technique called polymerase chain reaction (PCR) or quantitative PCR (qPCR). 

U.S. Geological Survey (USGS) scientist preparing samples for analysis of protein levels to normalize results from oxidative stress bioassays.

Scenic landscape from Hells Canyon Reservoir, Idaho

Scientists optimized existing methods to collect and identify microorganisms including Bacillus anthracis, a pathogenic microorganism, in 4,800 soil samples across the United States, and developed a

Photomicroscopy and Flow Cytometry Laboratory — Lafayette, Louisiana. Microscopic video imaging is used for computerized analysis of sperm motility parameters

Michigan Bacteriological Research Laboratory — Lansing, Michigan. A microbiologist preparing a water sample

Landsat 8 captured this image of Lake Erie during a harmful algal bloom event on September 26, 2017. 

Dr. Bethany K. Kunz sets up a mobile-mounted dust meter, which measures concentrations of particulate matter across a range of particle sizes. She and her team use the meter to determine the effectiveness of dust control treatments on roads and estimate human exposure to dust in the inhalable size range.

Four USGS scientists sampling pore water from a canoe in un-named lake approximately 340 meters downgradient of the Bemidji, Minnesota crude oil spill site.

Inside a debris cage, which is used to prevent pipe blockages, at one of 21 stormwater outfalls that was sampled prior to discharge to streams or stormwater ponds.