Case Studies

St Marys Bowmanville Cement Plant

Ontario Cement plant sound sources measurements for acoustical noise model

Location: Bowmanville, Ontario, Canada
Owner/Operator: St Marys Cement Group

St Marys Cement is a leading manufacturer of cement and related construction products in the United States and Canada. Headquartered in Toronto, Ontario, Canada, St Marys Cement supplies cementitious materials to the Great Lakes Region and is also a significant producer of concrete and aggregates to the Ontario market. St Marys Cement is a wholly-owned subsidiary of Votorantim Cimentos, an international cement manufacturer based in Sao Paulo, Brazil. The Bowmanville plant is one of two cement production facilities operated by St Marys in Ontario.

HGC Engineering undertook a comprehensive Acoustic Assessment of the Bowmanville Cement Plant in order to fulfill a condition of an Environmental Compliance Approval issued for the facility by the Ontario Ministry of the Environment (“MOE”).

A 3D acoustical model of the site and surrounding area was developed, based on detailed measurements of more than 130 individual sources of noise using superior sound intensity instrumentation and measurement techniques.

Measurements of overall facility sound levels were also conducted in the surrounding community, the results of which were used to verify the accuracy of the predictive model, and were compared to the applicable limits, established in accordance with MOE guidelines.

Primary sound sources at the facility that were evaluated:

  • Surge pile
  • Secondary crusher
  • Kiln shell cooling fans & kiln stack
  • Cooler/Burner heat exchanger
  • Finish mill dust collector exhausts
  • Shipping equipment (boat and road trucks)
  • Emergency generators
  • Vacuum trucks


Acoustical Engineering Services Included:

  • Comprehensive onsite and offsite acoustical measurements
  • Predictive acoustical modeling
  • Acoustic Assessment Report




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