Project Number:

3251

Aggregate Industries - Littleton Plant

SERVICE:

Air and Noise Permitting

DESCRIPTION:

Aggregate Industries Northeast Region, Inc. (Aggregate) owns and operates a a nonmetallic mineral processing/crushing plant in Littleton, Massachusetts. Tech Environmental was retained by Aggregate to expedite the preparation of a non-major Comprehensive Plan Approval (nmCPA) application to reconfigure and upgrade their existing crushing plant to improve overall crushing operations and to obtain access to future reserves of rock deposit onsite. Tech completed the application within two weeks of receiving authorization to proceed.

As part of the application, Tech conducted a detailed noise impact analysis to assess potential impacts of relocating the plant closer to the northeast of the site during peak rock crushing activities. A detailed noise modeling analysis was conducted using the the Cadna/A acoustic model to calculate the sound levels from relocated crushers and screens at the site to various locations around the site. The analysis included a number of sound mitigation measures that included installing earth berms and sound walls and rearranging stockpiles to reduce noise from the loudest sound sources. Tech demonstrated that the relocated plant would meet the MassDEP Noise Policy and Littleton Noise Bylaw. Tech also assisted Aggregate in successfully obtaining their building permit at several Littleton Planning Board meetings. Additional noise studies and presentations were performed to address the concerns of the Planning Board and surrounding residences.

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Key Points

  • Aggregate Industries needed a Conditional Air Plan Approval to reconfigure and upgrade their existing crushing plant in Littleton, Massachusetts.
  • Tech expedited the preparation of the nmCPA and conducted a detailed noise impact analysis to optimize sound mitigation onsite.