1. Manny Marta, P.Eng. Project Lead
CSChE Chemical Spill Environmental/ Ecological Risk Assessment Guideline Development
“Bridging Process Safety and Environmental Science”
PSM Division & CSA Technical Committee Meeting
Edmonton, Alberta
June 20, 2018
Manny Marta, P.Eng.
Project Lead
File Date: June 7, 2018

2. Presentation Topics Development Team Guideline Purpose Guideline Scope
Intended Users & Benefits
How Guideline Can Support CSA PSM Standard
Simple Status on Development
Presentation target – 15+/- minutes
Questions – 15+/- minutes

3. Development Team Process Safety Experts Environmental Experts
Some are CSChE PSM Division members
Environmental Experts
Includes consultants, former Gov’t of Canada scientist, former professor
Industry members
Some are/ were CIAC members
Environmental advocate
Regulators
Alberta, Ontario, BC

4. Guideline Purpose To provide practical guidance on
Planning/ performing an environmental or ecological risk assessment
Making risk-based decisions or prioritizations
By integrating best practices from
process safety
environmental science
Complement Public Safety Risk Assessment Guideline

5. Guideline Scope Chemicals Chemical Sources Chemical phases
Toxic to ecosystems or environment
Chemical Sources
Fixed facilities; e.g. production sites, storage sites
Transportation systems; e.g., pipelines, rail, road, marine, air
Chemical phases
Liquid, solid, vapour

6. Guideline Scope (Cont’d)
Areas of Concern
Ecosystems
Aquatic, Terrestrial, Wetland Habitats
Fauna/ Flora receptors
Human Use Areas (Socio-Economic)
Aquatic, terrestrial
Water sources – drinking, agricultural use
Cultural/ traditional
Commercial
Recreational

7. Guideline Scope (Cont’d)
Not in Scope This Time Around
Direct health & safety harm to humans due to following exposures
Ingestion or contact from contaminated water, soil, fauna, flora
Reserved for future update of guideline
Saves time/ effort and complexities involving risk criteria calibration for both non-human and human harm
Direct harm to humans from exposure to released chemical vapor is captured in proposed Public Safety Risk Assessment Guideline

8. Intended Users Introducers of Risk Users/ advocates of the environment
chemical production or transportation companies
Users/ advocates of the environment
Public
Interest Groups
Regulators

9. Benefits for Users
Provide for common understanding between different users
Evidence-based analyses
Statistical/ probabilistic
Scientific exposure & effects assessment
Transparent decision-making criteria based on risk with integration of
Expected frequency of a spill/ release
Estimated Overall Environmental Harm Index

10. How Guideline Can Support CSA PSM Standard
In relation to Environmental/ Ecological Risk
Risks experienced outside facility property
6.0 Understanding Hazards & Risks
6.3 Process risk assessment & risk reduction
6.3.4 Hazard identification
6.3.5 Consequence analysis
6.3.6 (Annual) Likelihood analysis
6.3.7 Risk estimation
6.3.8 Risk criteria
6.3.9 Risk management
7.0 Risk Management
7.4 Emergency management planning
Fig. 1 (pg. 36) Risk management framework

11. Risk Criteria Framework
𝑬𝑯𝑰 𝒙 = 𝑬𝒙𝒕𝒆𝒏𝒕 𝑬𝒙𝒕𝒆𝒏𝒕 𝒓𝒆𝒇 x 𝑺𝒆𝒗𝒆𝒓𝒊𝒕𝒚 𝑺𝒆𝒗𝒆𝒓𝒊𝒕𝒚 𝒓𝒆𝒇 x 𝑹𝒆𝒄𝒐𝒗𝒆𝒓𝒚 𝑹𝒆𝒄𝒐𝒗𝒆𝒓𝒚 𝒓𝒆𝒇
Extentref / Severityref / Recoveryref
- Defines a significant/ major accident
Adapted from UK DETR (1998). Management of Harm to the Environment: Criteria for the Management of Unplanned Releases (The Stationary Office: London), ISBN
Typical “Major Accident”; EHI = 100
Acceptable Frequency; ≤10-6 per yr. per site
𝑬𝑯𝑰 𝑻𝒐𝒕𝒂𝒍 = 𝒌 𝒋 𝑬𝑯𝑰 𝑩𝒊𝒐𝒕𝒊𝒄 𝑹𝒆𝒄𝒆𝒑𝒕𝒐𝒓𝒔 + 𝑬𝑯𝑰 𝑺𝒐𝒄𝒊𝒐−𝒆𝒄𝒐𝒏𝒐𝒎𝒊𝒄 𝑨𝒓𝒆𝒂𝒔 𝒋 𝒌
j – different toxic chemicals with different effects (from same spill)
k – different ecosystems/ areas affected by same spill

12. Simple Status Overview
Sections With Team Review Completed or In Progress – 8/22 (36%)
Sections To Be Reviewed By Team – 14/22 (64%)
Valuable Team Reviews
Ensure technical accuracy and completeness
Identify efficient ways to present information
Separate Parallel Effort Planned Soon on Calibrating Risk Criteria
Once scope section review finalized
Includes Areas of Concern, Receptors of Concern
Plan to be issued
After Team Reviews Are Completed
Readable Draft Prepared for Peer Review

13. Simple Status Overview (Cont’d)
No.
Title 1
Acknowledgements 9
Possible Typical Applications for Guideline Use 16
Risk Analysis
(Integrating Frequency & Consequences) 2
Key Terms & Acronyms 10
Typical Triggers 17
Risk Assessment & Decision Making Criteria 3
Guideline Introduction 11
Overall Process Explained
(To include flow diagrams) 18
Risk Control/ Management
(Risk prevention/ mitigation) 4
Guideline Currency & Relevance 12
General Problem Understanding
(Includes conceptual models) 19
Uncertainty and Confidence 5
General Purpose of Guideline 13
General Planning
(Includes needed data/ experts/ tools, scheduling) 20
Risk Communication 6
Guideline Objectives/ Goals 14
Hazard Analyses & Spill/ Release Scenarios Development (Design/ Operations) 21
Longer Term Monitoring 7
Regulatory Requirements 15
Spill/ Release Consequence Analysis
(Includes Transport & Fate Modeling, Exposure and Effects Assessment) 22
Addenda
(Extra Info, data sources, etc.) 8
Scope for Guideline (Types of chemicals, Fixed Facilities, Transportation Systems, Ecosystems, Socio-Economic Systems/ Areas, Areas of Concerns, Potential Spill Location Criteria, Receptors (Incl.Soil)

14. Useful Links
Link to online shared location for Orientation Document (i.e., draft guideline), Environmental Risk Decision Methods Document, Excel Aid for Environmental Harm Index (EHI) Method
Link to online shared location for Key Terms and Acronyms Document
Free presentation template courtesy of the Presentation Magazine website