GREEN MARINE 2013 ANNUAL CONFERENCE Capital Dredging at ... · Envirochem Services Inc North Vancouver, BC [email protected] May 30, 2013 . Presentation Outline 1. The Setting:

GREEN MARINE 2013 ANNUAL CONFERENCE

Capital Dredging at Pacific Coast Terminals:

Planning For Sustainability

Presented by:

Andrew MacKay, M.E.S. Envirochem Services Inc North Vancouver, BC

[email protected] www.envirochem.com May 30, 2013

Presentation Outline 1. The Setting: Pacific Coast Terminals

2. Project Purpose and Objectives

3. Dredge Planning and Operations o Sediment Sampling

o Build Containment Berm

o Dredging

o Post-Dredge Monitoring

o Communications

4. Sustainability “Accounting”

5. Conclusion

6. Acknowledgements

7. Your Questions and Comments

2

The Setting:

Pacific Coast Terminals

Port Moody Arm,

BC

Community Fixture

Established 1929,

since 1960 in PM

43 hectares on

PMV lease land

Shallow mud flats

Commodities:

Ethylene Glycol

Sulphur*

Coal

Food Grade Canola*

Potash*

Two berths:

#1: Liquids (237m)

#2: Sulphur (241m)

3

The Setting:

Pacific Coast Terminals (2)

4

Project Purpose

Reduce tidal restrictions resulting in:

Increased vessel transit safety

Improved terminal viability by moving more

commodities more often

5

Project Objectives Increase channel depth to -14m chart:

Employ cost effective and efficient dredge equipment

Deliver environmentally friendly outcomes

Marine Habitat Restoration / Enhancement

Waste Diversion

Significantly reduced emissions and nuisance

Enhance community relationships

Port Moody Citizens

Local First Nations

6

Dredge Planning and

Operations Summary

Current plan builds on: • 1995 dredge and placement • 2009 Port Metro Vancouver design

• Local Placement vs. Transit / Disposal to Approved Site

Five (5) step process: 1. Characterize Sediment (Sampling and Analysis)

2. Build Containment Berm

3. Dredge

4. Post Dredge Monitoring

5. Communications and Engagement

7

Dredge Planning and Operations Summary

Step 1: Sediment Sampling Year # Of

Samples

Location Method Depth DAS

Results

2009 20 Channel Ponar surface

2012 10 Channel Ponar surface

3 Channel Vibracore to 2.5m -

2013 17 Placement,

Channel, Ref

Station

Ponar surface tbd

32 Placement,

Channel, Ref

Station

Vibracore 0.5, 2.0 and

“base”

tbd

TOTAL 82

8


Step 1: Sediment Sampling

9


Step 1: Sediment Sampling

Example: sediment subsurface (core)

sampling locations based on volume location

10


Step 2: Build Containment Berm

General Concepts Located between

turning basin and existing berm (1995)

Requires 34,000m3 material: Diverted clean

construction waste or excavation aggregates

Sourcing and logistics required

Low risk post-failure

Design Specs Max elevation to -4.5m

chart datum (avoids Fed Nav Waters issues)

Added Capacity: 600,000m3

Total capacity with existing berm: 655,000m3

Capacity required: 640,000m3 including “bulking factor”

11


Step 2: Build Containment Berm

12


Step 3: Dredge

Relocate approximately 530,000m3 sediment

Approximately double 1995 volume

Channel dimensions

Approximately 1.5 km long, 130m – 150m wide

From west side of Reed Point Marina to turning basin entrance

Three dredger types for optimal operations and cost effectiveness, reduced environmental impact

13


Step 3: Dredge

Clamshell Precision near

Ioco pipelines

Hopper • West of Ioco

pipelines,

precision placing

Cutter Suction • East of Ioco

pipelines using silt

curtains and

diffuser

14

Comprehensive monitoring program:

Pre-construction / operations baseline

Operations

Post dredge for up to five years

Specific requirements to be included in PMV approval conditions (e.g., TSS, NTU, sedimentation, areal abundance and diversity)

Will provide local First Nations training opportunity in field monitoring


Step 4: Post Dredge Monitoring

15


Step 4: Post Dredge Monitoring

16


Step 5: Communications Early and voluntarily First Nations contact

Operating in Tsleil-Waututh, Squamish, Musqueam and Stolo Nations Traditional Territories

Building lasting relationships Opportunity to participate in field monitoring

Compatible project outscomes (e.g., habitat enhancement) and First Nations marine harvesting

PMV to separately conduct consultations as part of review process “Duty to consult” required by law

17


Step 5: Communications

18

Current Project Schedule

Schedule subject to change

Note Fisheries restriction window March 2014 to July 15

Activity / Milestone Approximate Timeframe

May 2013 June July Aug Sept Oct Nov Dec Jan 2014 Feb Mar

Sediment Sampling X

Fish

eri

es W

ind

ow

Sta

rts

& B

egi

n P

ost

D

red

ge M

on

ito

rin

g

Env Canada DAS Approval X

DFO Habitat Approval X

PCT Resubmit PMV Application X

PMV Project Review

PMV Project Approval X

PCT Berm Planning

PCT Berm Construction

PCT Dredge

19

Planning for Sustainability

20


Environment

Enhance Marine Habitat

Minimize Impacts

Economy

PCT Viability

Social

Minimize Nuisance

Foster Relationships

Environment

Ecology

Economy

Employment Social

21

Compare Local Placement vs. Transit & Disposal at Sea

22



“Sustainability Accounting”

Sediment remains in

Port Moody Arm

Beneficial end use*

Cost effective

Shorter duration

Minimized emissions

(GHGs)

Waste diversion (berm)

Ocean Dumping

Sediment transported

for disposal (Point Grey)

No beneficial end use

Less cost-effective

Extended duration

Substantially Higher

Emissions

No waste diversion

Local Placement

23

Raise Seabed:

Increased Solar Irradiance

(4.5m local chart)

Benthic Microalgae: Increased Primary

Productivity

Juvenile English Sole & Juvenile

Dungeness Crab:

Increase Foraging Opportunities

Benthic Invertebrates:

Increased Diversity

and Biomass


Marine Habitat Enhancement Summary

24

Possibility of

Phase II, Intertidal Island Complex

Clean

construction

debris (concrete), excavation

aggregates


Marine Habitat Enhancement Summary

25


“Sustainability Accounting”

Sustainability Variables Local

Placement* Disposal at Sea -

Clamshell Disposal at Sea - Closed Hopper

Project Duration (days) 69 212 265

Environment

Habitat Enhancement Yes No No

Air Emissions (GHG - tCO2e) 2,800 5,900 11,100

Clean Construction Waste Diversion (35K m3)

Yes No No

Economic

Cost $5.0-$6.6 M $8.0 M > $20.0M

Social

Nuisance - Noise, Visual, Lighting (days) 1 3x 3x

FN Monitoring & Capacity Building Yes No No

*Local Placement Involves Clamshell, Hopper and Cutter Suction Dredgers

26

PCT Dredge Plan Using Local Placement:

Economy

Environment

Social

Aligned with principles of Sustainability!


Conclusion

27

Kent Smith, Manager Engineering &

Maintenance, PCT

Mark Adams, R.P. Biol, Owner, Envirowest

Dave Hart, Port Metro Vancouver


Acknowledgements

28


“Comments and Questions

29

Documents

GREEN MARINE 2013 ANNUAL CONFERENCE Capital Dredging at ... · Envirochem Services Inc North Vancouver, BC [email protected] May 30, 2013 . Presentation Outline 1. The Setting: