The requirement to manage and control hazardous building materials is not only a legal requirement, but a moral one.

SLR is at the forefront of the industry. Our team of professionals are helping to improve standards, define best practice, drive legislative change and promote safe and effective methods of hazardous building material management.

How can we help?

Working in the industrial, commercial and domestic market, we can offer a broad range of services and a wealth of experience. We are acutely aware of the requirements and obligations under government and workplace health and safety legislations and can guide and advice our clients accordingly.

Our services include:

  • Comprehensive suspect hazardous material / containment investigation services (asbestos, lead, PCB and universal waste)
  • Abatement design, oversight and air monitoring services
  • Indoor air quality (IAQ) contaminants assessment and remediation design
  • Site specific management plans including operations and maintenance programs
  • Structure condition / risk assessment
  • Critical response for emergency works (ie. following fire/storm damage, the discovery of contaminated fill etc)
  • Asbestos awareness and risk management training
  • Centralised online HazMat registers
  • NATA accredited reports for building material and asbestos dust samples
  • Expert witness

Accreditation and Licensure


SLR is NATA Accredited in Australia for Asbestos Fibre Counting, Volume Measurement (Air), and Asbestos Fibre Identification.


United States

EPA Accredited – All states and providences

State Licensed - Connecticut (CT), Massachusetts (MA), Maine (ME), New Hampshire (NH), New York (NY), Rhode Island (RI), Vermont (VT), and Puerto Rico (PR)

State Certified – Arizona (AZ), Delaware (DE), Georgia (GA), New Jersey (NJ), New Mexico (NM), Oregon (OR), Washington (WA), Wyoming (WY)

Our team includes

  • Ryan Rouillard Principal, Building Sciences
    Ryan Rouillard

    Ryan Rouillard is currently the Principal of Building Sciences with projects that involve the management of asbestos-containing materials, lead-based paint, and other hazardous materials related to renovation and demolition activities in buildings, as well as, assisting building owners in the long term management of asbestos in their buildings. His work includes asbestos and hazardous materials surveys and design specifications; management of asbestos, lead paint and hazardous materials abatement projects; screening and Phase I and II Environmental Site Assessments; monitoring of workplace exposure to chemical and physical hazards; indoor air quality assessments; and interpretation of industrial environmental compliance and permit-related information. He is responsible for all aspects of client relations, contracts/subcontracts, management and new client development. He is also responsible for business development and marketing plans to target market sectors and clients.

  • Jordan Harley Technical Discipline Manager
    Jordan Harley

    Jordan has gained professional experience in the environmental field of work. During his career he has gained experience in a wide range of laboratory skills and environmental, ecological and ecotoxilogical issues. Jordan has managed and trained team members, providing development, support and guidance and maintained superior quality and productivity in his department.  He is capable of troubleshooting any environmental issues while implementing best practice environmental mitigation measures.  Jordan also has high quality written and oral reporting abilities based on scientific analysis.

  • Jason Fernet Principal Consultant
    Jason Fernet

    Jason Fernet is a Professional Engineer and Connecticut Licenced Environmental Professional. Jason has experience as an engineer in remedial design/remedial action programmes, site investigation, preparing construction specifications, decommissioning, decontamination and demolition (DDD) management, hazardous and PCB waste management and multimedia permitting in various sectors across the United States. He has prepared remedial designs, feasibility studies, and construction bid documents, served as Engineer-of-Record, and managed remedial activities at complex sites undergoing clean up and redevelopment under expedited schedules. Jason has provided third-party review for agency negotiations on environmental clean up-related issues. He has developed and implemented TSCA PCB clean up plans in EPA Regions 1, 2, 3, 4, 5, 6 and 9.

  • Gemma Sheridan Senior Project Consultant
    Gemma Sheridan

    Gemma is a Project Consultant who has been part of the SLR team for three years.  Over this time, Gemma has accumulated a diverse range of experience across both the Occupational Hygiene and Environmental Management sectors of the business.

    Since joining SLR Darwin in 2016, Gemma has developed a portfolio of practical, field based, technical projects for which she has been a key support person, in conjunction with a proven ability to deliver quality reports that display both an understanding of the topic at hand, and attention to detail.

    Gemma is experienced in the installation and operation of a variety of noise and air quality monitoring instruments.  She also has experience in a variety of occupational hygiene assessments, including static and personal monitoring of a range of airborne contaminants and noise. She is effective at communicating and liaising with clients, colleagues and contractors to deliver project results.