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LEHDER Environmental Services Limited - Showcase -
Head Office
Suite 210, 704 Mara Street
Point Edward, Ontario
Canada N7V 1X4
Tel: (519) 336-4101

Fax: (519) 336-4311

Contact: Mark Roehler, Principal
Western Division
9954 - 67th Avenue
Edmonton, Alberta
Canada T6E 0P5
Tel: (780) 462-4099
Fax: (780) 462-4392
Contact: Daryl Zander, Principal
LEHDER Environmental Services Limited is a full service team of consulting professionals providing totally integrated environmental, healthy and safety solutions to industrial and municipal clients throughout North America.

The LEHDER name is pronounced "leader", and comes from the surnames of the original founding partners of the company; Sid Lethbridge, Des Hayles, Mike Denomme and Mark Roehler.

We provide services to companies in the petroleum and petrochemical sectors, steel industry, glass manufacturing, mining and smelting industries, automotive and associated suppliers, hospitals and health care facilities, government agencies, organic and inorganic chemical manufacturers, food processors, marine transport, pharmaceutical manufacturers and the pulp and paper industry.

LEHDER's multidisciplinary team of consulting professionals includes engineers, scientists, information management specialists, industrial hygienists, biologists and technologists; we work together to provide integrated solutions for our clients to address complex problems.

The Head Office for LEHDER is located in Point Edward, Ontario and our Western division is based in Edmonton, Alberta.

Factsheets on our services are available at:


LEHDER's Emissions Testing Team is one of the largest and most experienced in North America and is recognized by several U.S. and Canadian regulatory agencies.

Although geared to provide high grade industrial emissions testing services for compliance purposes, many projects conducted by LEHDER are related to the development of process-specific pollutant emission factors for various inventories and approval applications. These large projects often involve simultaneous testing and the deployment of multiple field crews.

Our field teams are skilled, organized, cohesive, and professional.

Other air quality management services we offer include:
· Odor Investigations
· Dispersion Modelling
· Applications for Licenses & Permits
· Certificates of Approval.

If you have questions, please contact:
Mike Denomme, Principal
Tel: 519-336-4101 ext 25


LEHDER provides a broad range of environmental, health and safety services to our industrial clients. These services include air quality management; industrial hygiene; indoor air quality and mould assessments; waste and hazardous materials classifications and property liability assessments and management.

Our Industrial Services Team of engineers, air dispersion modelers, industrial hygienists, scientists, project managers, information management specialists and technologists works together to provide innovative solutions to our client's most challenging issues.

Industrial facilities today are faced with the challenge of collecting, storing, managing, and evaluating an immense amount of environmental, health and safety data. The LEHDER EHS Information Management Service (LEIMS) can assist by taking this EHS data and turning it into information. LEHDER has developed LEIMS to enhance the air quality management services we offer including development and management of source and emission inventories, odor Investigations, air dispersion modeling and applications for Permits, Licenses and Approvals.

Property Liability Management services provided by LEHDER include site geological and monitoring data management; property assessment and remedial projects. On large properties or sites with multiple issues, LEIMS is used to ensure that the environmental data associated with environmental investigations or monitoring programs is properly managed.

If you have questions, please contact:
Sid Lethbridge, Principal
Tel: 519-336-4101 ext 22


The LEHDER team can meet your Health, Safety and Environmental Management needs through the following services:

· MSDS Management Systems
· Compliance Audits
· Due Diligence Management Systems
· Regulatory Training.

Our multidisciplinary team of consulting professionals work together to provide integrated solutions for the complex problems of our clients.

If you have questions, please contact:
Mark Roehler, Principal
Tel: 519-336-4101 ext 24


On-site regulatory training programs can be customized and delivered to meet a client's regulatory needs in environmental, transportation, workplace, health and safety.

To view the LEHDER Training Schedule, please click here:

MSDSWorld Services

MSDSWorld Services
LEHDER Environmental Services has created MSDSWorld® to provide a complete electronic solution for efficiently creating, managing and distributing your Material Safety Data Sheets, MSDSs. Our goal is to take the pain out of MSDS management and distribution for you.

At MSDSWorld we provide a complete, fully-managed solution for MSDS management and distribution which we have designed to be flexible enough to meet the unique needs of your organization. To begin your project, we simply need an inventory of the MSDSs that you would like us to manage, that’s it, we take it from there!

Whether you have 5 or 5,000 MSDSs we have a solution that is right for you. From authoring to web hosting of MSDSs we offer a complete outsourcing package. MSDSWorld® services are provided by LEHDER's integrated team of scientists, technologists, industrial hygienists and information specialists.

Key features of the MSDSWorld MSDS Management service:
  • Complete, fully-managed outsourcing solution; we just need the inventory of your products to get started
  • Creation of MSDS Library for your specific products which will be delivered via CD-ROM or Internet
  • The MSDSs will be organized by location or department of use and placed on the Internet with a custom web page representative of your company’s corporate image
  • Web site creation and web hosting of MSDSs included in subscription rate
  • Monitor and update MSDSs on a timely basis
  • MSDS Summary Sheets
  • Workplace Labels
  • Site Specific Inventory of MSDSs
  • Search by Product Name, Manufacturer or Supplier.
To request a Proposal for MSDS Management or MSDS Authoring

LEHDER has created a Guide to Hazardous Material Data Management, click here to download.

If you have questions, please contact:
Allison Whyte, MSDSWorld Project Leader
Tel: 519-336-4101 ext.38

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