Data and Tools

2021 SO2 Allowance Auction

Find on this page the results of EPA's 2021 Acid Rain Program sulfur dioxide (SO2) allowance auction, which took place on March 30, 2021

2016 SO2 Allowance Auction

On this page, find the results of EPA's 2016 SO2 Allowance Auction, which took place on March 29, 2016.

2019 SO2 Allowance Auction

Find on this page the results of EPA's 2019 Acid Rain Program sulfur dioxide (SO2) allowance auction, which took place on March 26, 2019

2023 SO2 Allowance Auction

Find on this page the results of EPA's 2021 Acid Rain Program sulfur dioxide (SO2) allowance auction, which took place on March 30, 2021

Part 75 Testing Notifications and Reports

Provides information on submitting notifications to EPA and states under Part 75 regulations. https://www.epa.gov/node/277573/edit#edit-group-javascript

How to Cite This Source

This page will help users cite the information they find on the Acid Rain website.

External Review of BMDS 2.0 Beta Dichotomous (Quantal) Models (2007)

Summary and links to external peer reviews of BMDS dichotomous (quantal) models

External Review of the Multistage Weibull Time-to-Tumor Model (2007)

Summary and links to external peer reviews of MS_Combo multi-tumor model

EPA Efforts to Reduce Exposure to Carcinogens and Prevent Cancer

From conducting risk assessments on new chemicals, to researching how exposure to environmental toxins and pollution, EPA is very active in cancer prevention.

Updated Seagrass Retrieval in EDM

Estuary Data Mapper (EDM) uses web coverage service (WCS) calls to retrieve, stream, and save data. This page describes how to tap into those WCS commands for your own applications and usages.