Science & Technology

Fertilizer Emission Scenario Tool for crop management system scenarios

The Fertilizer Emission Scenario Tool for CMAQ is a high-end computer interface that simulates daily fertilizer application information for any gridded domain. It integrates the Weather Research and Forecasting model and CMAQ.

EPA Positive Matrix Factorization 5.0 Fundamentals and User Guide

The EPA PMF 5.0 User Guide helps users understand how to install, get started, use tools, and troubleshoot the PMF model. It also provides a range of training exercises and application references.

Optimized Noise-Reduction Algorithm (ONA) Program Improves Black Carbon Particle Measurements Using Aethalometers

ONA is a data post-processing tool to reduce noise in real-time Aethalometer black carbon data through variable time averaging of the data.

Positive Matrix Factorization Model Frequently Asked Questions

Common installation and user questions for EPA's Positive Matrix Factorization 5.0 Model.

Air Sensor Collocation Macro Analysis Tool

Use the Macro Analysis Tool and Guide to learn how to evaluate the accuracy of air sensors by comparing air quality data collected on the monitors to regulatory-grade monitors.

Air Research Publications in the Science Inventory

A list of air related journal articles, reports and other published research

AQUAPAL®. National Contingency Plan Product Schedule

Technical product bulletin: this miscellaneous oil spill control agent used in cleanups is an open-celled elastomeric sorbent. The foam can be cut and fabricated into various shapes in order to absorb oil in different scenarios.

AQUAFLEX®. National Contingency Plan Product Schedule

Technical product bulletin: this miscellaneous oil spill control agent used in cleanups is an open-celled elastomeric sorbent. The foam can be cut and fabricated into various shapes in order to absorb oil in different scenarios.

Nonpoint Source: Forestry

Sources of nonpoint source (NPS) pollution associated with forestry activities include removal of streamside vegetation, road construction and use, timber harvesting, and mechanical preparation for the planting of trees. Information resources.

ADP-7. NCP Product Schedule

Technical product bulletin: this surface washing agent effective in salt water or fresh water, with no limitations as to usage within optimum temperature parameters.

Addressing Water Quality Challenges Using a Watershed Approach

We all live in a watershed — the area that drains to a common waterway, such as a stream, lake, estuary, wetland, aquifer, or even the ocean — and our individual actions can directly affect it.

EPA Partners for Nanomaterial Research

Partners of EPA Nanomaterial Research

Nonmonotonic Dose Responses as They Apply to Estrogen, Androgen, and Thyroid Pathways and EPA Testing and Assessment Procedures

A state of the science document providing a judgment on the degree to which nonmonotonic dose-responses are evidenced in the scientific literature and to evaluate the extent to which they may impact U.S. EPA’s chemical testing and risk assessment.

NAMs Training Worksheets

Page housing links to training worksheets.

Program for Assisting the Replacement of Industrial Solvents (PARIS III)

The purpose of this software is to help users find replacements for solvent mixtures that are currently being used in industrial processes, but have dangerous environmental side effects.

Chemical Safety for Sustainability: Research Action Plan 2012-2016

The Strategic Research Action Plan for EPA’s Chemical Safety for Sustainability research program presents the purpose, design and themes of the Agency’s research efforts to ensure safety in the design, manufacture and use of existing and future chemicals.