Search results for NAAQS

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EPA Issues New Short-term NO2 National Ambient Air Quality Standard

…way of addressing compliance with the standard is conducting air dispersion modeling. Air dispersion modeling is typically used by new or existing facilities to demonstrate compliance with the NAAQS. Moving…

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EPA Revisions to the Lead Ambient Air Monitoring Requirements

On December 14, 2010 the EPA revised the ambient monitoring requirements for lead (Pb). This action comes after the EPA revised the primary and secondary lead National Ambient…

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Susitna-Watana Hydroelectric Project

Working in collaboration with the prime consultant and the Alaska Energy Authority, HMMH provided air quality support services on the Federal Energy Regulatory Commission (FERC) licensing process for…

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East Boston-Chelsea Bypass Project Noise and Air Quality Analysis

The Massachusetts Port Authority proposed to construct a new limited-access bypass road for commercial vehicles. The Project will consist of a 2,225 foot two-lane roadway in an existing…

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Emergency Generator Emissions and Dispersion Modeling System Analysis

HMMH performed air dispersion modeling in support of the Massachusetts Department of Environmental Protection Environmental Results Program (MassDEP ERP) requirements for an 800 kilowatt (kW) emergency generator in…

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MIT Sloan Building Air Dispersion Modeling Analysis

HMMH performed an air quality dispersion modeling analysis for the proposed 750 kilowatt (kW) emergency generator at the Massachusetts Institute of Technology (MIT). The Generator has a relatively…

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VDOT I-64 High Rise Bridge Corridor Study

The Virginia Department of Transportation (VDOT), in cooperation with the FHWA initiated this project to evaluate options to improve transportation conditions along the I-64 corridor between the I-46…

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Wesleyan Drive Roadway Widening

HMMH conducted the noise and air quality analysis and produced the noise and air technical reports in conjunction with the environmental document developed for the Wesleyan Drive project…

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