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  • What is defined as a structure (home or place of business)?

    While generally defined as a building, a structure under the structural cleaning program will include only those habitable spaces where indoor occupancy is frequent and regularly occurring on a daily or near-daily basis. Examples of residential structures include primary residences and living spaces, and examples of commercial structures include offices…

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  • Why is cleaning of homes and places of businesses happening?

    Norfolk Southern, with EPA oversight, is providing indoor cleaning to eligible occupants in response to concerns about the impact of the derailment and cleanup work on homes and places of businesses. The cleaning is to address potential dust that may have been generated as part of the train derailment and…

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  • What work still needs to be done at the derailment site?

    Although contaminated soil has been excavated and removed from the derailment site, some additional work remains. Soil sampling continues to check all areas where cleanup operations took place. Stream assessments continue, and culvert clean out has started. Groundwater and drinking water sampling also continues. Expect these investigations and possible additional…

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  • No Street Address Availability Tier II Reporting

    Pursuant to 40 CFR 370.42(d) , Tier II chemical inventory information must include the complete name and address of the location of the facility (including the full street address or state road, city, county, State and zip code), latitude and longitude. If a facility does not have a street address…

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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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  • Does this mean my home or place of business is contaminated?

    No. However, indoor cleaning is being offered to address potential dust emissions that may have been generated as part of the train derailment and cleanup work. This service is being offered as an additional service to interested members of the community.

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  • Tier2 Submit software and confidential chemical location information

    When using EPA’s Tier2 Submit software to comply with the annual Hazardous Chemical Inventory reporting requirement under the Emergency Planning and Community Right-to-Know Act (EPCRA) §312, how can a person withhold confidential chemical location information from disclosure to the public? In order to fulfill the proper reporting under EPCRA, a…

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  • Do states require extra Tier II information?

    Do states require additional information on the Tier II report? How can I find out about the state data requirements? Some states do want additional Tier II information; contact your state Tier II administrator to learn specific details. Tier2 Submit includes fields for the additional information requested or required by…

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  • Range Code or Specific Weight for Maximum Amount and Average Daily Amount on Tier II Form

    When submitting Emergency Planning and Community Right-to-Know Act (EPCRA) Section 312 Tier II reports, does the owner or operator of the facility need to enter a specific weight in pounds for the maximum amount and the average daily amount of a certain hazardous chemical present at the facility, or should…

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  • Attaching Site Plan Using Tier2 Submit

    Tier2 Submit does allow a user to attach and submit a site plan with the Tier II inventory information. However, before using Tier2 Submit to submit a site plan, the facility should check with the relevant State or Tribal Emergency Response Commission ( SERC or TERC ) and/or their state…

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  • Entering Alternative Storage Types and Pressure and Temperature Conditions on Tier II Form

    EPA provides a list of storage types and conditions for pressure and temperature in the instructions for the paper Tier II form and as dropdown menus in Tier2 Submit. Are facilities required to use the storage types and conditions that EPA provides, or can facilities provide different values? Facilities are…

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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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  • Completing Tier II Forms When Information Has Not Changed

    Pursuant to 40 CFR 370.42(c) and (r) , an owner or operator submitting federal Emergency Planning and Community Right-to-Know Act (EPCRA) Tier II inventory information must indicate if the facility or chemical information is identical to that submitted last year. If the facility or chemical information is the same as…

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  • Why are you cleaning homes and places of business?

    Since the derailment, property owners and renters have voiced concerns about the impact of the derailment and cleanup work on their homes and place of business. In response, Norfolk Southern, with EPA oversight, is providing indoor cleaning to interested, eligible occupants.

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