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  • What questions was EPA trying to find answers to during its first round of sampling at the Norwood Landfill site?

    The main question that EPA seeks to answer is whether the identified waste areas warrant consideration for placement of the Site on the National Priorities List (NPL) or Superfund List. In the first round of sampling, EPA collected surface soil samples (0-2 feet) from the landfill property, and surface water…

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  • What does it mean when EPA finds contamination that “exceeds screening levels?”

    Screening levels are not the same as cleanup or action levels. An exceedance of a screening level indicates the need for additional evaluation, potentially including a site-specific risk assessment.

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  • If EPA finds any contamination associated with the Norwood Landfill site that “exceeds” what is considered safe, will EPA clean up that contamination - even if the Agency cannot find any “pathways” for that contamination to reach humans or sensitive environments?

    If the sampling data shows an exceedance of a screening level, EPA will consult with the site Toxicologist and the Agency for Toxic Substances and Disease Registry (ATSDR) to conduct a human health risk screening assessment to determine any potential threat to human health. EPA will also consult with the…

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  • How do you know you are not missing some areas that might be contaminated?

    EPA uses all credible information available, including community input, regarding the boundaries and geographic areas of waste that may have been deposited or where contaminated soil may have been placed. The team selects its sampling locations based on those areas and consults historic aerial images that help depict those boundaries.

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  • Will EPA sample the Glenolden Laboratory property?

    The former Glenolden Laboratory property located on South Avenue is a separate site. The previous owners conducted a voluntary cleanup pursuant to the Pennsylvania Department of Environmental Protection’s (PADEP) Environmental Cleanup Program, known as Act 2. Concerns regarding remedial actions conducted under Act 2 should be directed to PADEP as…

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  • What is Vermiculite?

    Vermiculite is the mineralogical name given to hydrated laminar magnesium-aluminum-iron silicate that resembles mica in appearance. All vermiculite ores contain a range of other minerals that were formed along with the vermiculite in the rock. Vermiculite ores from some sources have been found to contain asbestos minerals but asbestos is…

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  • Redoing calculations if RMP*Comp is updated

    Will RMP*Comp be updated? If so, would I have to redo calculations I might already have made with an earlier version? No, you do not have to redo your work if you have already completed your consequence analyses. RMP*Comp is based on the EPA's Offsite Consequence Analysis Guidance (OCA Guidance)…

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  • Different distances to toxic endpoints with different versions of RMP*Comp

    I've noticed that for certain chemicals, RMP*Comp gives substantially different distances to the toxic endpoint than previous versions. Why? In the current version of RMP*Comp, we have incorporated new chemical-specific distance tables for ammonia, chlorine, and sulfur dioxide. The generic tables are still used for other chemicals (you can see…

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  • Distance to endpoint calculations used by RMP*Comp

    Does RMP*Comp perform some math or modelling in order to arrive at an endpoint distance, or is it simply interpolating from the tables in the EPA's Offsite Consequence Analysis Guidance (OCA Guidance)? RMP*Comp follows the procedures set out in the OCA Guidance . This means that for some scenarios, the…

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  • Will EPA conduct sampling in local parks in the Norwood community?

    EPA will sample Norwood Park because of its close proximity to the Old Norwood Dump and Norwood Landfill. There is no current information that would warrant sampling in other parks.

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  • Is EPA planning on taking samples from the basements in the homes you are sampling in the Norwood community? If not, why not?

    EPA is not planning to collect samples from residential basements or crawl spaces at this time. EPA installed six groundwater wells within the Old Norwood Dump, Norwood Lower Park, and the Winona Homes neighborhood. Groundwater wells will not be placed on private residential properties. The wells will be used to…

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  • How are EPA’s sampling results verified for accuracy?

    Samples were sent to an EPA certified laboratory for analysis. After the samples are analyzed, the data will be validated independently by chemists to verify the accuracy of the results.

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  • Will EPA sample the Norwood school?

    EPA continues to work closely with the Interboro School District, but there are no plans to sample the Norwood school at this time. For site investigations, sampling activities must be based upon the identification of a potential source of contamination. Based upon research and historic images, EPA has not seen…

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  • What are some uses of Vermiculite?

    Vermiculite has been used in various industries for over 80 years. It is used in the construction, agricultural, horticultural and industrial markets. Examples of products that contain vermiculite include potting soil mixes, loose fill insulation, and packing material. For more information, visit the EPA webpage: Protect Your Family from Asbestos-Contaminated…

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  • How does EPA develop a “sampling plan” for a site like the Norwood Landfill Site?

    EPA uses the information available, including community input, regarding the boundaries and geographic areas of waste that may have been deposited or where contaminated soil may have been placed. The team selects its soil sampling locations based on those areas and consults historic aerial images that help depict those boundaries…

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