SLR air quality and compliance team stay at the forefront of evolving air regulations and science.

How can we help?

The global air quality team brings experience with the assessment of impacts associated across all business sectors including Oil and Gas, Mining and Minerals, Industry, Power, Infrastructure, and Built Environment.

With an increasing global population, heightened social awareness of critical environmental issues, and the expansion of international regulatory framework, air quality resource management is emerging as a priority for industries and governments around the world.  

Our services include:

  • Air Permitting
  • Air Toxics Health Risk Assessments

  • Ambient Air/Meteorological Monitoring

  • Air Quality Program Management

  • Dispersion Modelling

  • Compliance Management

  • Emissions and Control Studies

  • Leak Detection and Repair (LDAR)

  • Expert Witness

Our team

  • Tim Desselles Managing Principal
    Tim Desselles

    Tim brings nearly two decades of experience in environmental permitting and compliance with a focus on industrial facilities and major capital projects in a variety of industries, including iron and steel, synthetic organic chemicals, liquefied natural gas, petroleum refining, inorganic chemicals, power generation, and carbon black manufacturing. Tim's work has had a particular emphasis on the development of greenfield capital projects and major facility expansions, including multi-media environmental assessments and licensing, PSD/NNSR and Title V air quality permitting.

  • Tim Quarles US Air Program Manager
    Tim Quarles

    Tim has over 30 years of experience in air quality consulting, multimedia permitting and environmental compliance. His experience encompasses all aspects of air permitting and compliance management in many industrial sectors including Renewable and traditional Power Generation, Portland Cement, Lime Manufacturing and Other Industrial Minerals, Upstream, Midstream, and Downstream Oil and Gas, Malt Brewing, Grain and Animal Feed, Malt Plants, Metal and Glass Container manufacturing, and Pesticide and Herbicide formulation.

  • Matt Harrison Managing Principal
    Matt Harrison

    Matt has over 30 years of technical and managerial experience spanning from industry operations to construction management to environmental and air quality services. He brings expertise managing technical services for a variety of energy industry clients. He was responsible for teams that have provided air and GHG emissions inventory and protocol development, field research, regulatory compliance, and emission reduction strategies for public and private sector clients. 

  • Deever Bradley Senior Principal
    Deever Bradley

    Experienced Professional Engineer with extensive history in the environmental services industry. Strong leadership, mentoring, and technical skills with broad industry and Agency relationships and experience in providing value to clients. Highly skilled in Air Permitting, Compliance, and Pollution Control, Climate Change, Environmental and Management Systems Auditing, Technical Litigation Support (civil and criminal), EHS Consulting, and Project and Programme Management/Delivery. Nationally recognised subject matter expertise in Leak Detection and Repair. Environmental consulting experience for industrial and government clients in 42 states, Puerto Rico, Brazil, Canada, and Mexico for clients in the Petrochemical, Oil & Gas, Pipeline & Terminal, Manufacturing, Power, and Government Sectors. Projects include applicability assessments, NSR, NNSR, PSD, and Title V permitting, NSPS, NESHAP, and MACT compliance, BACT analysis, and emissions estimation for numerous industrial sources including chemical manufacturing, petroleum refining, pipelines, and oil & gas operations. Assisted with enforcement actions related to NEIC, DOJ, state, and local civil or criminal environmental investigations helped implement air permitting, and enhanced programme enhancements under Consent Decrees or Agreed Orders.

Tractor in field with near by industrial buildings

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Rich Johnson Senior Air Quality Consultant
Rich Johnson

Rich has provided specialist odour services to a range of clients across the UK and internationally over the last decade, supporting clients within industry as well as developers. These services have ranged from odour constraints assessments using dispersion modelling to assessment of odour control systems and odour management plans. Although odour assessment is his specialism, Rich also undertakes a range of air quality assessments such as combustion and dust emissions assessments in support of planning and permit applications.

Industrial plant next to river

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Oli Packwood Project Consultant
Oli Packwood

Having recently completed his masters degree in Climate Change, Development and Policy, Oli is a Project Air Quality Consultant working from SLR's Bradford on Avon office. He undertakes a variety of air quality monitoring, from fugitive dust monitoring at quarries to occupational exposure monitoring at waste and recycling facilities. Oli also undertakes modelling assessments and produces air quality assessments for a variety of sectors.

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Nigel Taylor Principal, Air Quality
Nigel Taylor

Nigel Taylor has worked in the environmental field since 1993 with research and professional experience in matters of air quality. He received his Master of Science Degree in Land Resource Science from the Ontario Agricultural College at the University of Guelph. With a specialty in air quality assessment and emission inventories, Nigel has provided technical consultation and managed numerous air quality and noise impact related studies. Environmental assessment, regulatory permitting, environmental assessment and design are services that have been provided to a number of sectors including the energy and land use planning sectors.