Bridget Mills, P.Eng.

Senior Environmental Engineer, Partner

Bridget Mills is a partner and senior environmental engineer at BCX Environmental Consulting. Bridget has over 25 years of air quality consulting experience with more than 20 years dedicated to managing and actively participating in air quality studies that support environmental approvals, municipal licenses and environmental abatement action plans.  Bridget's particular areas of expertise include air quality, land use compatibility, expert testimony and nuisance impact management.

Bridget also specializes in MOECC communication and has successfully developed strong and positive relationships between the MOECC and BCX’s clients.

About US

BCX is an employee owned, privately held Canadian Company, licensed and insured to provide environmental engineering services in Ontario. 

Our mandate is to offer quality professional work that allows our clients to meet their environmental compliance needs in a cost effective and practical way.

We specialize in air quality services including permit/approval applications; annual emissions reporting; dust and odour mitigation/management plans; advanced air dispersion modelling to support air quality impacts assessments; land use compatibility studies and peer reviews.

We strive to provide “Your Environmental Compliance Solutions”.


air quality specialists

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Christina Wright, M.Sc.Env. EP

Senior Environmental Scientist, Partner

Certified Toxics Reduction Planner

Christina Wright is a partner and Senior Environmental Scientist at BCX Environmental Consulting.  Christina has over 16 years of experience in environmental consulting and industry. Christina has obtained solid experience in managing and actively participating in an extensive range of environmental consulting projects requiring interdisciplinary knowledge and intensive team and client liaison. Christina’s primary strength lies in interpreting legislation, representing our key clients in stakeholder discussions and providing information and guidance to our clients to help them effectively implement and manage change. 

Christina serves as a member of the Board of Directors for the Air & Waste Management Association (AWMA) Ontario Section.

Xiaoxi (Winnie) Song, M.Sc. P.Eng.

Senior Environmental Engineer, Partner

Xiaoxi (Winnie) Song is a partner and senior environmental engineer at BCX Environmental Consulting.  Winnie regularly oversees and prepares emission inventories and advanced air dispersion modelling to support environmental compliance approval (ECA) applications, annual reporting programs and air quality studies for a variety of industries and sectors.  With more than 12 years of experience in air dispersion modelling, Winnie has a profound understanding of the characteristics of different air dispersion models including AERMOD, SCREEN3, Reg. 346 and CALPUFF.  Winnie also works closely with industrial clients to develop effective mitigation solutions to achieve air compliance.   ​

In recent years, Winnie has expanded her expertise to include Ontario’s Climate Change Mitigation and Low‐Carbon Economy Act and associated regulations. Winnie has conducted Cap and Trade webinars and developed customized cost benefit analysis calculators for a number of BCX’s industrial clients to determine the feasibility under Ontario’s Cap and Trade program of various GHG management strategies.