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David Herbst

Air Quality Technician

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David Herbst has six years of experience as an air-quality technician on Barr’s stack-testing team providing environmental testing services to clients in the mining, fuels, power, and other industries. He provides source emissions testing for a variety of pollutants in compliance with U.S. Environmental Protection Agency sampling methodologies including data reduction, data entry, and report generation for field-acquired information. He also conducts source emissions testing for mines, manufacturing and chemical facilities, oil refineries, and ethanol plants. In addition, David has experience visually evaluating source emissions, calibrating and maintaining testing and monitoring equipment, and preparing reports for clients and regulatory agencies.

 David has certifications in:

  • Visible Emissions Testing

  • MSHA Safety

  • OSSA (Canadian Oil Sands)

  • Ohio Lumex Mercury Sorbent Trap Analysis

  • Qualified Individual

  • OSHA 10-hour

  • TWIC


(952) 842-3646


BS, Environmental Science, University of Minnesota - Duluth


Barr Engineering Co.
4300 MarketPointe Drive
Minneapolis, MN 55435

Phone: 952-832-2600
Fax: 952-832-2601
Toll free: 800-632-2277