Air Dispersion Modelling Speakers and Bios

Author: Clint Tillerson

Clint Tillerson has bachelor degrees in Meteorology and Sociology from North Carolina State University (NCSU) and is currently working to complete a Master’s degree in Environmental Assessment through NCSU.  He is a Sr. Project Scientist with AMEC in Durham, NC and has worked with AMEC (formerly MACTEC) for the past 16 years as a contractor to the U.S. EPA.  Much of his work with the EPA has been focused on the support of the continued maintenance of the AERMOD modeling system for the Air Quality Modeling Group (AQMG) including the maintenance of AERMET, AERMAP, and the development of AERSURFACE.  In addition to his work with AQMG, he has supported the EPA, state/local environmental agencies, and private industry in the areas of atmospheric dispersion modeling, meteorological and air quality data management, and software design and development for internet and PC systems. 

Title: Developments in AERMOD

Since the release of updates to AERMOD (v.12345) in December 2012, there has been a continued effort on the part of the EPA to further evaluate AERMOD performance, assess recommendations brought forth by the modeling community, and conduct research to further enhance the AERMOD Modeling System.  Some of the many efforts that are ongoing which may be highlighted include: the  evaluation of new beta options in AERMOD; the use of prognostic meteorological data in AERMOD using the Mesoscale Model Interface Program (MMIF); the review of a more recently proposed ambient ratio method (ARM2) as a Tier 2 approach for NOX-to-NO2 conversion; a wind tunnel study underway to address known issues associated with building characterization and building downwash; updates to AERMOD and related components to come in the Fall of 2013; and looking ahead to potentially revise the regulatory options in Appendix W for the 11th Conference on Air Quality Models in the Spring 2015.


Author: Diane Saxe

Dr. Dianne Saxe is one of Canada’s leading environmental lawyers. Most recently, she was selected by her peers as one of the best environmental lawyers in Canada for 2013 in Best Lawyers International.

She is a Certified Specialist in Environmental Law, and holds one of Canada’s only Doctorates of Jurisprudence (PhD) in environmental law. She is also a certified, experienced mediator. She is the author of Ontario’s standard environmental law reference, Ontario Environmental Protection Act Annotated, and numerous articles, chapters and texts. Her regular columns appear in Municipal World and Hazmat Magazine.

Title: LegalIsues Associated with use of Modeling

Presentation will cover some legal issues that may arise when using modeling to:

  1. Obtain an environmental compliance approval (ECA), and other environmental permits. For example, how can models be used to address community concerns regarding an approval? How can discrepancies between MOE and proponent modeling results be resolved?
  2. Address ongoing issues in operations. For example, how can modeling be used to address odour complaints? How should models be presented to the community?
  3. Support expert testimony in court. For example, what are the legal issues associated with using models as “demonstrative evidence” to support a legal opinion? 


Author: Sharon Schajnoha 

Sharon Schajnoha is a Senior Project Manager at RWDI.  She joined the firm in 1997 and was made an Associate in 2004. Sharon has an undergraduate degree in environmental engineering from the University of Guelph.  In addition to her project management role, Sharon provides technical direction, quality control and quality assurance on a broad range of projects related to air quality impacts from transportation.  She has been involved with the air quality assessments for Highway 407 East, Highway 401 Widening, Highway 17 Widening, and Highway 403 and QEW widening to name a few.  Sharon is a member of the Institute of Transportation Engineers. 

Title: Air Quality Assessment for Roadways

The Ministry of Transportation Ontario recently released their "Environmental Guide for Assessing and Mitigating Air Quality Impacts and Greenhouse Gas Emissions of Provincial Transportation Projects."  An overview of the guideline and recent experience in its application will be presented.  The presentation will review key air pollutants and their corresponding health effects, the effects of vehicle types and travel speeds on air pollutant emissions and how local air quality impacts are predicted.  Examples of results from the widening of a 400 series highway will be presented along with mitigation considerations. 


Author: Christopher Morgan

Following 10 years of teaching and researching various aspects of earth and air science at universities in Ontario, he joined the former City of Toronto as a senior environmental planner and science advisor in 1989.  Following Toronto's "amalgamation" in 1998 he moved to Public Works, Technical Services and became responsible for air quality assessment.  He has been the Program Manager responsible for air quality assessment across Toronto within the Environment & Energy Office since 2008, and in that role also works closely with Toronto Public Health.

Christopher is currently responsible for such areas of applied research as: 

- the City’s local air quality research program (modelling and assessing air quality and recommending implementation of appropriate improvement measures); 

- the City’s climate change assessment and evaluation program (modelling to provide estimates of future weather, especially extremes that the City will have to adapt to); and - - the City's research to support sustainable energy planning, sustainable transportation planning, GHG reduction target compliance, Toronto's Green Development Standards and adaptive site and building design standards regarding future weather, air quality and energy conservation. 

His work is based on the scientific and technical evaluation of present/future conditions and the significance and viability (environmental, social, political and economic) of potential solutions.

Title: City of Toronto Regional Studies and New Directions

Abstract coming soon. 


Author: Dr. Alex Breido

Dr. Alex Breido, P. Eng., is a project manager with AMEC with over 25 years of engineering and environmental consulting experience. He is responsible for projects related to air emissions, covering dispersion modelling, environmental assessments and permitting for large variety of industrial and mining facilities. 

Dr. Breido was a project lead for number of turn-key industrial projects starting from engineering studies, modeling, permitting up to construction and start-up of the equipment.

Title:  AERMOD dispersion modelling in support of large scale mining projects

Recently the air approval of large scale mining projects in Ontario and worldwide became much more complicated and challenging process. That could be explained by better understanding of environmental impacts potentially created by this type of operations and availability of more appropriate modelling tools for their assessments. Blasting operations in open pits more often become one of the main environmental concerns for public and regulators.    

Main highlights:

  • Shift in mentality – why air emissions become one of  a core environmental concerns for mining projects
  • Mining rights versus surface rights
  • Emissions estimate
  • Type of emission sources under consideration
  • Air emissions generated by blasting in open pits
  • Mining project as a unique combination of numerous modelling scenarios
  • Sensitivity modelling runs
  • Mitigation and good engineering practice


Author: Mike Jammer

Mike Jammer is a Senior Associate with ENVIRON specializing in emissions and air quality. He has significant experience with emission inventories development, air quality assessments, and regulatory issues including site-specific standards under O. Reg. 419. Mike has completed numerous emissions and air quality studies for industrial clients within the manufacturing sector such as petrochemical and iron and steel, the mining sector, waste management sector and power sector. He also has significant experience with municipal, provincial and federal government sector clients that include stationary and mobile sources emissions, alternative fuel and technology, and support to policy and planning development.

Mike has a BASc in Chemical Engineering from the University of Toronto and is a Professional Engineer in Ontario. He has authored and/or presented several technical papers on air quality dispersion modelling, emissions measurement and estimation, and mobile source emissions modelling.

Title: Review and Recommendations for CAMM

Abstract coming soon. 


Author: Penny McInnis

Penny McInnis is a Principal of LEHDER Environmental Services, an Air Quality Consulting firm that has served clients in a wide variety of sectors since 1995.  Mrs. McInnis has sixteen years of experience in advanced dispersion modeling, environmental consulting, and project management.  

Advanced modeling projects have included numerous petrochemical, chemical, manufacturing and co-generation power facilities.  Mrs. McInnis has developed and implemented methodologies to assist large, complex facilities in assessing upset and/or incident situations for compliance with O.Reg. 419.  These projects along with numerous CAMM modeling projects have involved the generation of user-defined meteorological input files for processing with AERMET and hour-by-hour modeling input files.  

Mrs. McInnis is a Professional Engineer and a member of AWMA.  She has a B.Sc. in Environmental Engineering from the University of Guelph.  

Title: Challenges and Experiences with CAMM

Combined Assessment of Modelled and Monitored Results (CAMM) programs are being conducted by numerous industrial facilities as part of the “Sarnia Initiative” or the Site Specific Standard or Technical Standard Process.  The technical guidance for performing a CAMM program has morphed since 2008 with input and feedback from invested parties and steering committees and is currently in unpublished draft form.  LEHDER has been involved in the modelling and analysis components of numerous CAMM plans under all of the above initiatives and processes.  LEHDER will provide several examples of highlights and challenges associated with the modelling and analysis components of these projects.


Author: Harvey Watson

Harvey Watson is the Air Quality Group Leader at R.J.Burnside & Associates Ltd.  In this role he is responsible to ensure the successful implementation of air quality requirements for a diverse range of clientele.   

Harvey has extensive experience in the Air Approvals and project management industry.  Harvey specializes in intricate data analysis, which allows dynamic modelling of interrelated processes common in industrial facilities.  Harvey has undertaken projects for a wide range of industrial, commercial, and public sector clients spanning the food, automotive, railcar,  automotive, petrochemical, pharmaceutical, and manufacturing industries.   

Harvey has successfully completed many applications for Ontario Environmental Compliance Approvals. He has also assisted numerous clients with other environmental compliance requirements.  He is one of Ontario's certified Toxic Reduction Planners and has had proven success facilitating clients through the TRA regulatory requirements.   

In addition, Harvey has been involved in various projects including site remediation, process automation, scheduling, process improvement, biotechnology development, software development, IT systems configuration, PLC Programming, odour sampling and modelling, and Acoustic Assessments.   

ASHRAE Self-Contamination, When and How to Use It 

A brief review of the technique recommended by ASHRAE to calculate the concentration of contaminants at air intakes of receptors on the same building.


Environmental Acoustics Modelling Speakers and Bios

Author: Dr. Gilles A. Daigle

Bio: Dr. Gilles Daigle has been working in the field of acoustics for over 35 years at the

National Research Council (NRC).  He has systematically studied the many interacting mechanisms that affect how sound travels through the air (e.g., ground impedance, turbulence, refraction, interference, noise barriers, ground topology, absorption).  He is

widely regarded as one of the top authorities worldwide in the field of atmospheric acoustics.  In more recent years, he has undertaken research projects on diffraction, arrays of microphones, hearing aid technology, and surface waves.  He was awarded the R. Bruce Lindsay Award of the ASA in 1988.  In 2002, Dr. Daigle received the Médaille Etrangère (Silver Medal) from the Société Française d'Acoustique and in 2005, he received the ASA Helmholtz-Rayleigh Silver Medal.  Dr. Daigle has served as Secretary-General and President of the International Commission for Acoustics (ICA).  He has served as Vice-President and President of the Acoustical Society of America (ASA) and he has just completed his term as the President of the International Institute of Noise Control Engineering (I-INCE).  He is currently a Principal Consultant with MG Acoustics and Researcher Emeritus with NRC.

Title: Sound Propagation – Review & Tutorial

Abstract: The reality of sound propagation in the atmosphere is more complicated than simple geometrical spreading.  Most common grounds, such as grass and layers of snow, are acoustically soft.  This leads to a measured spectrum that is strongly influenced by the type of ground surface between source and receiver.  Grounds may not be flat, leading to shadow zones or multiple ground reflections.  Gradients of wind and temperature refract sound either upwards (upwind or in a temperature lapse) or downwards (downwind or in a temperature inversion).  Atmospheric turbulence causes fluctuations and scatters sound into acoustical shadow zones.  Many of these features mutually interact and accurate predictions of sound transmission from source to receiver must somehow account for all of these phenomena simultaneously.  Numerical codes, such as the Parabolic Equation (PE) have been developed to do this.  More recently, the Nord2000 project has produced an engineering method that also accounts for all phenomena and during the European Harmonoise project, the Nord2000 method was further refined.  The standard ISO 9613 Part 2, in wide use today, attempts to account for all the phenomena empirically, but with a focus to produce predicted levels that are expected to be rarely exceeded.  This lecture will review the various phenomena and models in use today.


Author: Rob Stevens from HGC Engineering

Bio: Robert is Principal of HGC Engineering, a consulting engineering firm specializing exclusively in noise, vibration and acoustics.  Over the past twenty-three years he has conducted acoustical assessments and noise/vibration studies for hundreds of industries across North America, and abroad, including developing noise control recommendations to meet local regulatory requirements.  Rob has conducted research into methods of low frequency noise attenuation in ducts, computational acoustical methods, effects of high temperatures on absorptive silencers, resonant dissipative silencers, measurements of acoustical properties of materials, and the use of sound intensity measurement methods in novel applications.

Title: Limitations of Environmental Noise Modeling

Abstract: Computer modeling of sound propagation outdoors has become an indispensable tool for acousticians tasked with assessing noise impact and developing noise control solutions.  Relative to the calculations that were practicable twenty years ago, modern acoustical computer models are very sophisticated.  Indeed, the commercially available modeling software packages have such impressive features for handling data input/output, GIS, and graphical post processing that it is easy to forget that a model is still a simplification of reality.  In some respects, many of the models are crude simplifications of reality which cannot represent the complexity of the actual phenomena during outdoor sound propagation.  Without diminishing the importance and usefulness of acoustical modeling, this presentation aims to remind us about the limitations inherent in acoustical modeling.  The model is not the reality.


Author: Peter VanDelden and Dan McKnight

Bio: Peter is a Senior Noise Specialist who has been with RWDI since 2001.  His portfolio includes many studies and peer reviews related to transportation, acoustic assessment, land use planning, and acoustic research.  He continues to be an active participant in the progress of transportation noise policy and modelling issues in Canada.

Bio: Dan McKnight is a Senior Policy Analyst with the Ontario Ministry of Transportation.  He has an Honours BA from Ryerson University.  In addition, he has Certifications in Public Administration, Economics, Business & Marketing. Dan has spent the past 30 years as a Planner and Senior Policy Analyst in the Ontario Public Service.  He began his career with the Ontario Ministry of Environment as a Planner in the Noise Assessment Unit.  From 1985 to 1990 he was in charge of the Noise Barrier Retrofit program for the Central Region of the Ontario Ministry of Transportation.  In addition, he assessed noise impacts as per the Environmental Assessment Act for Highway projects.  From 1990 until now he has worked in the MTO Environmental Policy Office developing MTO Policy associated with many environment issues.  One of his current projects is the development of inter-ministerial policy on the use of noise models in transportation planning. 

Title: Proposed Changes to Road and Rail Noise Modelling i

n Ontario

Abstract: The Ministry of Transportation, Ministry of the Environment, and Metrolinx would like your feedback on proposed new models for highway, railway and transit noise.  STAMSON, STAMINA, and STEAM are currently used.  A detailed study and subsequent peer review have looked at modelling algorithms and their implementation into software.  The outcome is a proposal to change how road and rail traffic noise are modeled in Ontario.  The presentation will provide the proposal together with supporting rationale.  MTO representatives will then lead a discussion seeking your input concerning the proposal, and implementation of the changes.


Author: Hans J. Forschner from Navcon Engineering Network

Bio: Hans Forschner has 26 years’ experience in environmental noise modeling and noise control.  He has a Bachelors in Building Physics  from the University of Applied Sciences Stuttgart, Germany.  In 1995 Hans Forschner joined Navcon Engineering Network.  He conducted noise & vibration control projects in various industries, applications and products (i.e., Amusement Parks, Petrochemical Facilities, Wind Farms, Highway, Railroad, Power Plants, Computer & Disk Drive Industry, Recording Industry, Medical Industry).  Hans Forschner has been teaching training seminars on acoustic intensity, environmental noise and software applications and provides sales and technical support for SoundPLAN, INSUL, Zorba and FEMtools.

Title: From Environmental Noise Modeling Tool to Engineering & Planning Solutions

Abstract: The presentation will discuss the basic concept, tools & techniques of noise modeling.  It will discuss the different objectives of noise models and how it can help to develop planning or engineering decision in regards to existing or new developments, designing noise mitigation concepts or outline policies.  The presentation will debate noise modeling parameters and the implementation of standards.”   


Author: Frank Babic from AMEC

Bio: Frank Babic is the Acoustics Practice Lead for Eastern Canada at AMEC.  He has seventeen years of engineering consulting experience in the areas of acoustics, noise and vibration engineering.  His responsibilities include leadership of AMEC's acoustics, noise and vibration service offerings in Ontario, Quebec and Atlantic Canada.  Service areas include engineering consultation in Environmental Noise, Transportation Noise, Building Acoustics and Vibration. 

Title:            Transmission Line Audible Noise

Abstract: Audible transmission line noise for the purpose of noise impact assessment has been a concern for environmental assessments. This presentation provides a review of published papers on audible noise from transmission lines.  Transmission line noise for both AC and DC lines, in foul and clear weather, is discussed.  Formulas for describing sound power level per meter (PWL/m) for both AC and DC lines are presented based on measurement parameters and empirical data.  Noise modeling of transmission lines in CADNA/A is presented. 


Author: Rob Jozwiak from Aercoustics Engineering Ltd.

Bio: Rob Jozwiak is a Project Engineer with Aercoustics Engineering Limited.  He specializes in the assessment and measurement of noise and vibration, with a keen focus on power generation (wind, thermal, and solar) and large scale industrial facilities.  Rob’s projects regularly rely on the use of environmental noise modelling and through his extensive project experience he has built a firm understanding of  the principles and practicalities surrounding its use.  Rob’s experience also includes developing noise abatement plans, designing noise and vibration controls, and conducting environmental audits.     

Title: Modeling Challenges with Renewable Projects

Abstract: In Ontario, under the Green Energy Act, sites seeking Renewable Energy Approvals (REAs) must demonstrate that the site will meet applicable Ministry of the Environment (MOE) noise limits.  To demonstrate compliance, sites are required to model their acoustic impact on all neighbouring receptors.  There are specific challenges when conducting environmental noise modeling for renewable sites (particularly wind farms).  This presentation will discuss some of the modeling challenges for REA projects.


Author: Tim Kelsall from Hatch

Bio: Tim is Director of Noise and Vibration at Hatch, a large global Consulting Engineering Company headquartered in Mississauga, Ontario.  He has a Master's Degree in Acoustics, is a Certified Industrial Hygienist, a Registered Occupational Hygienist and is Board Certified by the Institute of Noise Control Engineering (USA).  Tim has worked in transportation and industrial noise for over 30 years, with extensive experience in predicting, assessing and mitigating industrial and transportation noise.  He is chairman of the Canadian Standards Association S304 and Canadian Acoustical Association Standards Committees on which coordinate most acoustical standards work in Canada and a Director of the Canadian Acoustical Association. Tim was instrumental in putting several acoustical standards in place, including recent standards on noise barriers and noise emission.  He also sits on Canada’s Technical Advisory Committee on ISO noise standards.  He was awarded the CSA Award of Merit for his work on noise barriers and noise control.

Title: Sound Propagation over Water and how it compares to ISO 9613 (2)

Abstract: The ISO 9613(2) standard for calculation of noise propagation over land was written excluding propagation over water.  A series of measurements of sound at various distances from a large highway bridge have been taken and are compared to ISO 9613(2) calculations for the same scenario.  They show that for lower frequencies, which are the most important for offshore wind turbine calculations,  ISO 9613(2) provide a good approximation to the measured results and may prove suitable for offshore wind turbine noise predictions.