Science & Technology
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UIC Permit: PAS2R911BFOR
Pennsylvania General Energy underground injection control permit
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Indicators: Dissolved Oxygen
Dissolved oxygen (DO) is the amount of oxygen that is present in water. It is an important measure of water quality as it indicates a water body's ability to support aquatic life. Water bodies receive oxygen from the atmosphere and from aquatic plants.
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Research to Support Tribes
View products and publications related to research to support and partner with Tribes.
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TSC Science Priorities
Learn about EPA Tribal Science Council science priorities.
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Indicators: Conductivity
Conductivity is a measure of the ability of water to pass an electrical current. Because dissolved salts and other inorganic chemicals conduct electrical current, conductivity increases as salinity increases.
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Indicators: Atrazine
Atrazine is an herbicide widely used for control of broadleaf and grassy weeds. It is sprayed on row crops such as corn, sorghum and sugarcane, and in some areas is used on residential lawns. It also been used on highway and railroad rights-of-way.
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EcoRisk Portal
The EcoRisk Portal provides access to EPA’s ecological risk assessment authorities, regulations, policy, guidance, training, and technical resources.
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Indicators: Zooplankton
Zooplankton are small, free-floating aquatic microorganisms including crustaceans, rotifers, open water insect larvae, and aquatic mites. The zooplankton community is composed of both primary consumers and secondary consumers.
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Indicators: Sediment Diatoms
Diatoms are a type of algae that are typically abundant in marine and freshwater ecosystems. They have inorganic cell walls made up of silica (glass). Diatoms most commonly grow suspended in water, although they can also attach to substrates.
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Indicators: Phytoplankton
Phytoplankton are free-floating, microscopic algae that inhabit the sunlit, upper layer of most freshwater and marine environments. They are usually responsible for the color and clarity of lakes, wetlands, rivers, streams and estuaries.
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Indicators: Fish Assemblage
Fish assemblage refers to the variety and abundance of fish species in a given waterbody. Fish are sensitive indicators of physical and chemical habitat degradation, environmental contamination, migration barriers, and overall ecosystem productivity.
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Indicators: Wetland Vegetation (Introduced Species)
Introduced plants are indicators of the ecological integrity of waters and evidence of increased human-caused disturbance in the watershed. Introduced species that cause economic or environmental harm, or harm to human health, are called invasive species.
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Indicators: Wetland Vegetation (Plant Community)
Wetland vegetation specifically grows in water or is adapted to a growing in soil that is at least periodically flooded with water. These wetland plants are also referred to as “hydrophytes.”
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Region 10: Risk Assessment Contacts
Region 10 public points of contact, resources and research publications related to risk assessment.
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Integrated Science Assessment - Final Reports
Publications
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Exposure Factors Handbook Chapter 9
Exposure Factors Handbook: 2011 Edition and 2018 Update. The Exposure Factors Handbook provides information on various physiological and behavioral factors commonly used in assessing exposure to environmental chemicals.
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Indicators: Chlorophyll a
Chlorophyll allows plants (including algae) to photosynthesize, i.e., use sunlight to convert simple molecules into organic compounds. Chlorophyll a is the predominant type of chlorophyll found in green plants and algae.
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Indicators: Benthic Macroinvertebrates
Benthic (meaning “bottom-dwelling”) macroinvertebrates are small aquatic animals and the aquatic larval stages of insects. Benthic macroinvertebrates are commonly used as indicators of the biological condition of waterbodies.
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NHDPlus in WATERS
A national copy of NHDPlus is stored in the WATERS database for use by services, applications and reporting tools.
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MOU for NHDPlus for USGS and EPA
MOU for NHDPlus for the USGS and EPA