Air quality is possibly the most important, but nevertheless the most elusive problem in all environmental work. Perhaps Environmental Consulting Services are your answer to this problem.

They appear to be a small firm in Montana. Like all small firms their ability lies in the skill of the top folk. So here are the two at the top:

Kevin K. Walsh, Partner/Consultant. Mr. Walsh has over 24 years of environmental experience, with at least 15 of those years specializing in the AQ Services discipline. His background in the environmental service fields includes 9 years within the mining industry, wherein he was responsible for multi-media issues and received experience in the multi-discipline approach to environmental issues and problem solving. His education includes a degree in Biological Science, as well as continuing education and training throughout his career.

Jacinta L. Walsh , Partner/Office Manager/Technician. Ms. Walsh has 13 years of environmental experience through hands-on and on-the-job training. She manages the office operations for ECS, as well as performing a variety of environmental technician tasks.


They provide the full spectrum of services, including:


  • SO2 ambient air quality and meteorological monitoring for a Petroleum Refinery located in MT.
  • PM10 ambient air quality and meteorological monitoring for an Open-Pit Gold Mine located in SD.
  • Continuous Emissions Monitoring systems (CEMs) assistance, data recovery, quality assurance (QA), and reporting for a Manufacturing Facility located in MT.
  • Assisted two open pit gold mines in Mongolia with the selection, purchase, shipping, installation, calibrations, and operations of PM10 ambient air quality networks.

Modeling and Consultations

  • Computer Modeling of Criteria Pollutants using the EPA Approved Air Quality Model Industrial Source Complex Short-Term (ISCST3) for a Title V Permit Revision, source located in AZ.
  • Computer Modeling of Hazardous Air Pollutants (HAPs) for Title V Permit Application, source located in AZ.
  • Computer Modeling of HAPs for a Soil Remediation Site, source located in AZ.


  • Environmental Impact Statement (EIS) for an Open-Pit Gold Mine expansion located in NV.
  • Air Quality and Meteorological Baseline Report for a Proposed Gold Leaching project located in SD.
  • Ambient Air Quality Reports and CEMs Reports (Monthly and Yearly) for various projects in the States of MT and SD.
  • Meteorological Audits for a precious metals mine located in MT.
  • Quality Assurance Project Plans (QAPPs) for ambient air quality monitoring sites.
  • Quality Assurance/Quality Control (QA/QC) and Alternative Monitoring Plan (AMP) for several CEMs at a Petroleum Refinery located in MT.