Science & Technology
-
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.
-
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.”
-
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.
-
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.
-
Continuous Carbonaceous Aerosol Measurements
Webpage for continuous carbon measurements and important memos and guidance.
-
A Plain English Guide to the EPA Part 503 Biosolids Rule
This guidance document is not a substitute for the actual rule, but it is intended as a helpful tool for interpretation and implementation of the rule.
-
Basic Information: Pathogen Equivalency Committee
Basic Information for Pathogen Equivalency Committee
-
Local Greenhouse Gas Inventory Tool
Use EPA's Local Greenhouse Gas Inventory Tool to evaluate community greenhouse gas emissions and compile a local- or municipal-level GHG inventory.
-
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.
-
Region 10: Risk Assessment Contacts
Region 10 public points of contact, resources and research publications related to risk assessment.
-
Notification: Audit of the Voluntary School and Child Care Lead Testing and Reduction Grant Program
Notification: Audit of the Voluntary School and Child Care Lead Testing and Reduction Grant Program
-
New Approach Methods (NAMs) - Animal Use Metrics for Research and Development
This page reports metrics on animal use in research and development activities and under the Agency’s regulatory authority.
-
Genesis and Study Design for EPA’s Non-Targeted Analysis Collaborative Trial (ENTACT)
Slides for presentation on EPA's Non-Targeted Analysis Collaborative Trial (ENTACT).
-
Research on Evaluating Concentrations of Endocrine Disrupting Chemicals in Biosolids (Sewage Sludge)
EPA researchers are working to address some of these uncertainties by evaluating whether chemicals in biosolids degrade when biosolids are applied to agricultural soils or if the chemicals persist.
-
How to Share a Cycle with EPA
This explains how an Organization’s Assessment Administrator can choose to share a Draft or Working Copy (In Progress) Assessment cycle with EPA.
-
MOU for NHDPlus for USGS and EPA
MOU for NHDPlus for the USGS and EPA
-
How to Create a Combined Cycle in ATTAINS
How to Create a Combined Cycle in ATTAINS
-
Water Financing Tools
Tools for communities to obtain grants and analyze financial impacts.
-
SAM 2022 Chemical Methods Query Results
Selected Analytical Methods
-
SAM 2022 Chemical Methods Query
Laboratories measuring target chemical, radiochemical, pathogens, and biotoxin analytes in environmental samples can use this online query tool to identify analytical methods in EPA's Selected Analytical Methods for Environmental Remediation and Recovery