Science & Technology
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Part 75 Petition Responses
Find responses to petitions submitted by affected units subject to 40 CFR Part 75.
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Wildfire Study to Advance Science Partnerships for Indoor Reductions of Smoke Exposures
This study is being conducted to learn more about how wildfire smoke and other sources of air pollution impact indoor and outdoor air quality, and how these impacts vary throughout the year.
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Research on DIY Air Cleaners to Reduce Wildfire Smoke Indoors
Everyone deserves access to clean indoor air during wildfire smoke events. Many health and air quality agencies and nonprofits are providing instructions and parts for making Do-It-Yourself (DIY) air cleaners as a solution to reducing smoke indoors.
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Smoke Sense Study: A Citizen Science Project Using a Mobile App
EPA researchers are conducting a citizen science study called Smoke Sense to determine the extent to which exposure to wildland fire smoke affects health and productivity, and to develop health risk communication strategies that protect public health.
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Bulletins Live! Two -- View the Bulletins
Endangered Species Protection Bulletins set forth geographically specific pesticide use limitations for the protection of threatened and endangered (listed) species and their designated critical habitat.
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Grants Mining District Five-Year Reviews
This page provides a specific location for GMD FYR documents, issues, and timelines.
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Ambient Water Quality Tools
Tools that track water quality data and their impacts to the environment and human health.
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2018 Natural Gas STAR and Methane Challenge Renewable Natural Gas Workshop
Event page for the 2nd annual RNG workshop with AGA
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Managing the Quality of Environmental Data in EPA's Pacific Southwest (Region 9)
EPA Pacific Southwest, Region 9's Quality Assurance (QA) section's primary mission is to effectively oversee and carry out the Quality System and Quality Management Plan, and project-level quality assurance and quality control (QA/QC) activities.
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HAB Methods and Research
Information related to HAB Methods and Research
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What You Can Do
We can all take action to reduce some of the factors that allow HABs to grow and survive, learn to identify and report HABs and their associated illnesses to the appropriate agencies, and help teach others about HABs.
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What Are the Effects of HABs
Discover the effects of Harmful Algal Blooms (HABs) on human health and ecosystems. Learn about symptoms and treatments for people exposed to HABs, which produce toxins affecting water quality and aquatic life.
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How People and Animals Are Exposed to HABs and Their Toxins
Information related to ways to be exposed to HABs and their toxins.
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What Causes HABs
Information related to What Causes HABs
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Learn about Harmful Algae, Cyanobacteria and Cyanotoxins
A general overview of algal growths that lead to impacts on human health and the environment, or Harmful Algal Blooms (HABs).
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HAB Research
Information related to HAB Research
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EPA Accepting Public Comments on Candidates to be ad hoc Reviewers for Draft Supplement to the 1,4-Dioxane Risk Evaluation Under TSCA
The U.S. EPA will accept public comments on candidates under consideration for selection as ad hoc reviewers to assist the Science Advisory Committee on Chemicals (SACC) with their review of the 2023 Draft Supplement to the 1,4-Dioxane Risk Evaluation.
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HAB Methods
Information related to Analytical Methods for Toxin Analysis
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Status of Endocrine Disruptor Screening Program Other Scientifically Relevant Information (OSRI) Submissions and EPA Responses
EDSP OSRI Response Table as of March 30, 2011