Science & Technology

Exceptional Events Documents PM10 - Silverbow Co., MT

Exceptional Events Documents Ozone - Wyoming

Exceptional Events Documents Ozone - Kansas

PDF documents associated with ozone exceptional events for Kansas City, Wichita, and Topeka areas, KS.

Exceptional Events Documents Ozone - Sacramento County, CA

PDF documents associated with ozone exceptional events for Sacramento County, CA.

Exceptional Events Documents PM2.5 - Granite City, IL

PDF documents associated with PM2.5 exceptional events for Granite City, IL.

Exceptional Events Documents Particulate Matter - Klamath Falls, OR

Exceptional Events Documents Ozone - Washoe, Nevada

Exceptional Events Documents PM10 - Las Vegas Valley

Exceptional Events Documents PM10 - Phoenix, AZ

Exceptional Events Documents PM2.5 - Rose Park and West Valley, UT

How the W126 index value is calculated

This is a simple step-by-step guide to show how to calculate a W126 value.

Draft Analyses of PM Data for the PM NAAQS Review - Cover Memo

This is the three-page cover memo summarizing the analyses.

Analyses of 1999 PM Data for the PM NAAQS Review

These files document all analyses conducted in association with the EPA memorandum from Terence Fitz-Simons, Scott Mathias, and Mike Rizzo titled "Analyses of 1999 PM Data for the PM NAAQS Review," November 17, 2000.

Draft Analyses of PM Data for the PM NAAQS Review

These files document all analyses conducted in association with the EPA memorandum from Mark Schmidt, David Mintz, Tesh Rao, and Lance McCluney titled "Draft Analyses of PM Data for the PM NAAQS Review," January 31, 2005.

The Frank R. Lautenberg Chemical Safety for the 21st Century Act: First Year Implementation Plan

The new law includes much needed modernizations to TSCA, the only major piece of environmental legislation that had not been updated since it was passed in the fall of 1976.

EPA Releases New Calculator and Updated Data for Occupational Pesticide Seed Treatment Exposure

EPA has released a new calculator and updated worker exposure data used to assess occupational safety for new seed treatment pesticides, new seed treatment uses of registered pesticides, and existing seed treatment pesticides currently undergoing review.

EPA Accepting Comments on Candidates to be ad hoc Reviewers for Draft TSCA Systematic Review Protocol

EPA is accepting public comments on candidates under consideration for selection as ad hoc peer reviewers assisting the Science Advisory Committee on Chemicals (SACC) with their review of the draft EPA Toxic Substances Control Act (TSCA) Systematic Review

Description of Updates for MCCEM Version 1.2 (February 2001)

The EPA Office of Pollution Prevention and Toxics, Economics, Exposure, and Technology Division has developed several exposure assessment tools and models. A description of the models and tools and the definition of exposure are given in separate web page