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    USEPA has developed a Vapor Intrusion Screening Level Calculator

    The Office of Superfund Remediation and Technology Innovation (OSRTI) has developed VISL Calculator Version 1.0 a spreadsheet tool (the Vapor Intrusion Screening Level (VISL) Calculator (XLSX) (436K) and VISL Users Guide (PDF) . It lists chemicals considered to be volatile and sufficiently toxic through the inhalation pathway, and provides VISLs for groundwater, soil gas and indoor air. These screening levels are generally recommended media-specific risk-based screening-level concentrations. The VISL calculator’s intended use is to assist Superfund site managers and risk assessors in determining whether chemicals found in groundwater or soil gas can pose a significant risk through vapor intrusion and, if so, whether a site-specific vapor intrusion investigation is warranted. This could be a very useful tool for other environmental professionals. Other Agency cleanup programs may also find it helpful to consider the VISLs for their own specific needs.

     

    For additional information, visit: http://www.epa.gov/oswer/vaporintrusion/guidance.

     

    Location

    160 Veterans Blvd.
    South Haven, Michigan 49090
    Phone: (888) 685-1628
    Fax: (269) 637-5664

    This facility has a full internal security system monitored 24/7/365 to insure the safety and integrity of our clients data. Also, when our mobile laboratories and corporate vehicles are not mobilized to a job site they are housed at the South Haven corporate facility.

    Commitment to Quality

    The goal of the NAL Quality System is to ensure that business operations are conducted with the highest standards of professionalism in the industry. To achieve this goal, it is necessary that NAL provide not only scientifically sound, well documented, and regulatory compliant data, but also provide the highest quality service experience available in the industry, NAL’s Quality System is designed to provide a framework for continuous improvement within the organization, minimize systematic error, and to encourage constructive, documented problem solving.