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  • 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.

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  • 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…

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  • My neighbor is re-siding and re-roofing his house and there is material all over the ground. Do I need to be worried about asbestos exposure?

    Not all house siding or roofing materials contain asbestos. If you are concerned the material might contain asbestos, you can ask your neighbor whether or not the material has been tested for asbestos. Federal regulations regarding renovations or demolitions of asbestos-containing materials do not apply to a homeowner’s renovation of…

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  • How do I know if I have asbestos in my home (in floor tile, ceiling tile, shingles, siding, etc.)?

    The only way to be sure whether a material contains asbestos is to have it tested by a qualified laboratory. EPA only recommends testing suspect materials if they are damaged (fraying, crumbling) or if you are planning a renovation that would disturb the suspect material. Samples should be taken by…

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  • Where can I go to learn more?

    PitWatch.org is the online home of the Berkeley Pit Public Education Committee. This volunteer committee educates residents, students, and the public about the environmental management of the Berkeley Pit.  Information includes the geology, hydrology, current events, and ongoing academic research associated with the Berkeley Pit. This committee frequently shares their…

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  • I have changed my brakes in the past, should I be worried about asbestos exposure?

    Because some, but not all, automotive brakes and clutches available or in use today may contain asbestos, professional automotive technicians and home mechanics who repair and replace brakes and clutches can potentially be exposed to asbestos dust. Brake and clutch dust can be seen when a brake disk, drum, clutch…

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  • Does the EPA have money available for homeowners to pay for asbestos testing or asbestos removal?

    The EPA does not have funding available to homeowners for asbestos testing or removal. Other Frequent Questions about Asbestos Learn About Asbestos Asbestos and School Buildings Information for Owners and Managers of Buildings that Contain Asbestos Protect Your Family from Exposures to Asbestos Asbestos Contaminated Vermiculite Insulation

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  • I'm remodeling my home. Do I need to be concerned about asbestos in the building materials?

    It's not possible for you to tell whether a material in your home contains asbestos simply by looking at it. If you suspect a material within your home might contain asbestos (for example floor tile, ceiling tile or old pipe wrap) and the material is damaged (fraying or falling apart)…

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  • Does dry wall or sheet rock contain asbestos?

    There is no way to know whether these materials contain asbestos without having them tested. If you are concerned those materials in your home may contain asbestos and the materials are damaged (frayed, falling apart) or if you are performing a renovation that will disturb the material, consult with a…

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  • How can I get involved?

    EPA encourages the public to review our Community Involvement Plan (pdf) (66pp, 6MB) that lays out our specific community involvement activities, and how to become involved at the Site. You can also contact our Community Involvement Coordinator, Mackenzie Meter ( [email protected] ), for site updates and to be added to…

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  • I found out the cement water pipes leading to my house (business) contain asbestos. What should I do?

    If the pipes are damaged they should be properly repaired or replaced by your water utility. Learn more about asbestos in drinking water . Other Frequent Questions about Asbestos Learn About Asbestos Asbestos and School Buildings Information for Owners and Managers of Buildings that Contain Asbestos Protect Your Family from…

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  • Where can I find someone to test a material to see if it contains asbestos?

    You can perform an internet search for “asbestos inspection and assessment” and the location of your home. Also, make sure that the inspector is properly trained and accredited by your state. Other Frequent Questions about Asbestos Learn About Asbestos Asbestos and School Buildings Information for Owners and Managers of Buildings…

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  • 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…

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  • Is there still asbestos in automobile brakes?

    It is possible that some aftermarket brakes, especially imported brakes, may still contain asbestos. Other Frequent Questions about Asbestos Learn About Asbestos Asbestos and School Buildings Information for Owners and Managers of Buildings that Contain Asbestos Protect Your Family from Exposures to Asbestos Asbestos Contaminated Vermiculite Insulation

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  • 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…

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