Search Frequent Questions
Filter By:
- Air Emissions Inventories Total results: 34
- Asbestos Total results: 141
- Butte Area/Silver Bow Creek Total results: 17
- Coronavirus (COVID-19) Total results: 33
-
East Palestine, Ohio Train Derailment
Total results: 148
- Air testing Total results: 2
- About the Cleaning Process Total results: 10
- About the East Palestine Train Derailment Total results: 13
- After Cleaning Total results: 3
- Assistance with Child Care and Pets During Cleaning Total results: 2
- Chemicals of concern and associated health impacts Total results: 8
- Eligibility Total results: 7
- Environmental Sampling and Monitoring Total results: 7
- Environmental testing results Total results: 8
- Exposure to chemicals in the air, soil and water (dioxins) Total results: 18
- Formaldehyde Total results: 1
- Impacts to the environment Total results: 1
- Livestock and pet health impacts Total results: 1
- Odors and toxicity Total results: 2
- Personal Belonging During Cleaning Total results: 6
- Physical work updates, road closures, and upcoming public meetings Total results: 3
- Prior to Cleaning Total results: 3
- Purpose Total results: 6
- Relocation Assistance Total results: 2
- Residential soil sampling and water testing Total results: 10
- Taggart Street Reopening Total results: 12
- Tax-exempt Total results: 1
- Waste disposal and containment Total results: 13
- Water Management Update Total results: 9
- Emergency Planning and Community Right-to-Know Total results: 301
- Fuel Program Total results: 693
- Great Lakes Funding Total results: 92
- Lead Total results: 398
- MOVES Total results: 57
- Norwood Landfill Site Total results: 30
- Oil Regulations Total results: 96
- Permitting Under the Clean Air Act Total results: 19
- Radiation Total results: 1
- Risk Management Program (RMP) Total results: 285
- Southeast Minnesota Groundwater Total results: 11
Displaying 1 - 7 of 7 results
-
What sources make up the Tier 1 categories used in the emissions trends?
Tier 1 categories are assigned by source classification codes (SCCs) that are the most specific processes available in the NEI. The latest SCC list with the Tier 1 assignments can be downloaded from the EPA SCC website in Comma Separate Values (CSV) format.
- Last published:
-
What is the cause of the large decrease in electric utility emissions, particularly sulfur dioxide, starting in 1995?
SO2 emissions reductions from utilities during this time are primarily attributed to the impacts of the acid rain program. As described on EPA’s Acid Rain Program web page, Phase 1 of this program began in 1995 and affected 263 units at 110 most coal-burning electric utility plants in 21 eastern…
- Last published:
-
Where can I find biomass emission limits for biomass burning in industry? I am looking for limits on particulate matter, SO2 and NOx.
For information on EPA air emission standards for industrial sources, please visit this website. If you need additional help with specific questions, please use the contact us link on one of these pages to inquire further with staff in the emission standards program. New Source Performance Standards
- Last published:
-
What is EPA’s response to inaccurate claims about its use of ASPECT?
The characterizations of EPA’s ASPECT response in East Palestine are false. More information can be found about ASPECT’s response in the . EPA Region 5 requested ASPECT to fly to East Palestine late in the day on February 5, 2023. As soon as the request was made, the aircraft was…
- Last published:
-
What is being tested for in EPA’s air testing program?
Seventy-five different chemicals are tested for on the derailment site and around East Palestine. The air monitoring and sampling network includes 9 monitoring stations, 8 sampling stations, a MINICAM van, and the PTR-MS laboratory vans.
- Last published:
-
Why do mobile source NOx emissions jump higher between 2001 and 2002 on the emissions trends?
The emissions model used for mobile sources changed from MOBILE6.2 to MOVES 2010 in December 2009. This change included a notable increase in NOx emissions. The EPA adjusted data back to 2002 to reflect the change in models. The higher emissions in 2002 are because of this method change and…
- Last published:
-
Why do the PM2.5 emissions for the electric utilities source category jump up between 1998 and 1999?
The estimation method for PM emissions from fuel combustion sources was enhanced beginning with the 1999 National Emissions Inventory. Prior to 1999, the emissions measurement data methodology only included the filterable portion (which means the solid particle matter at elevated stack temperatures). Beginning with the 1999 NEI, both the filterable…
- Last published: