Coquitlam Dam Seismic Upgrade Project ... - BC Hydro

Coquitlam Dam Seismic Rehabilitation 

ENVIRONMENTAL MANAGEMENT PLAN 

Version 4 

Prepared for: 

BC Hydro Engineering, Environment 

6911 Southpoint Drive 

Burnaby, BC 

V3N 4X8 

By: 

Jeff Greenbank, RPBio. 

2586 Passage Drive 

Coquitlam, BC 

V3H 3G7 

June 15, 2004 

2586 Passage Drive, Coquitlam, BC V3H 3G7 Cell: 604.802.4299 Fax: 604.469.9980 

Email: greenbankj@shaw.ca



Version 4 

TABLE OF CONTENTS 

Page No. 

1. INTRODUCTION.................................................................................................................1 

1.1. PROJECT OVERVIEW.........................................................................................................1 

1.2. PROJECT BACKGROUND...................................................................................................1 

1.3. PROJECT DESCRIPTION.....................................................................................................3 

1.4. PURPOSE OF THE ENVIRONMENTAL MANAGEMENT PLAN ..............................................5 

1.5. ENVIRONMENTAL OBJECTIVES AND GENERAL SITE CONSIDERATIONS ..........................5 

1.6. AUTHORIZATION PROCESS...............................................................................................6 

1.7. ENVIRONMENTAL REGULATIONS.....................................................................................7 

2. ENVIRONMENTAL RESOURCE ASSESSMENT AND MANAGEMENT .................8 

2.1. DRINKING WATER SUPPLY ..............................................................................................8 

2.2. AQUATIC RESOURCES ......................................................................................................9 

2.3. VEGETATION ..................................................................................................................10 

2.4. WILDLIFE HABITAT........................................................................................................11 

2.5. RECREATION/VISUAL.....................................................................................................12 

2.6. HERITAGE OR ARCHAEOLOGICAL SITES ........................................................................12 

2.7. COMMUNITY RESOURCES AND CONSULTATION ............................................................12 

3. CONSTRUCTION IMPACTS AND ENVIRONMENTAL MANAGEMENT.............14 

3.1. GENERAL........................................................................................................................14 

3.2. CONTRACTOR’S SITE ENVIRONMENTAL PROTECTION PLAN.........................................15 

3.3. ACCESS DEVELOPMENT .................................................................................................16 

3.4. SEDIMENTATION AND WATER HANDLING.....................................................................16 

3.5. EROSION CONTROL ........................................................................................................18 

3.6. OIL AND FUEL ................................................................................................................19 

3.7. VEGETATION REMOVAL.................................................................................................20 

3.8. CONCRETE AND GROUTING ...........................................................................................21 

3.9. ACID ROCK DRAINAGE ..................................................................................................21 

3.10. EXPLOSIVES AND BLASTING.......................................................................................21 

3.11. WASTE MANAGEMENT...............................................................................................22 

3.12. SEWAGE AND REFUSE DISPOSAL ................................................................................22 

3.13. HYDROLOGY...............................................................................................................23 

3.14. SITE RESTORATION AND DEACTIVATION...................................................................23 

4.0 ENVIRONMENTAL MONITORING ..........................................................................24 

5.0 SCHEDULE .....................................................................................................................25 

6.0 ORGANIZATION AND AGENCY CONTACT LIST ................................................26 

Coquitlam Dam Seismic Rehabilitation Page ii 

Environmental Management Plan – Version 4 

June 15, 2004

LIST OF FIGURES 

Figure 1. Location of the Coquitlam Dam ......................................................................2 

Figure 2. Aerial view of the Coquitlam Dam .................................................................3 

Figure 3. View of Coquitlam Dam, Reservoir and project components..........................5 

LIST OF APPENDICES 

Appendix 1 Draft plan view and section of the embankment and construction 

area overview drawing. 

Appendix 2 Fish Habitat Compensation Plan 

Appendix 3 GVRD Watershed Regulations 

Appendix 4 Procedures for importing fill material into GVRD watersheds 

Appendix 5 References for The GVRD Watershed Management Plan and the 

GVWD Watershed Lease. 

Appendix 6 Instream work – pump around diagram 

Appendix 7 Spill Response Plan 

Coquitlam Dam Seismic Rehabilitation Page iii 


June 15, 2004

1. INTRODUCTION 

1.1. PROJECT OVERVIEW 



Version 4 

The Coquitlam Dam is located on the Coquitlam River 15 km upstream from its confluence with 

the Fraser River, as shown on Figure 1. The original dam was constructed to provide additional 

storage and flow for the Buntzen Lake Generating Station. The Coquitlam Reservoir also 

supplies drinking water to the Greater Vancouver Regional District (GVRD) via an intake and 

tunnel on the eastern shore of the reservoir. 

The Coquitlam River and Coquitlam Lake Reservoir also hold historical and cultural 

significance for Kwikwetlem First Nation. BC Hydro is consulting with them directly in regard 

to this project. 

The Coquitlam Dam is a hydraulic earthfill embankment with a crest length of 290 m and a crest 

elevation of 161.4 m. Facilities also include: 

• an overflow spillway; 

• an outlet tunnel which has been converted to a three-gate low-level sluice at el. 140.23 

m; 

• fish flow release valves (el. 140.76 m), which also convey water through the outlet 

tunnel; and 

• the Coquitlam-Buntzen tunnel at el. 132.0 m, which conveys water from Coquitlam 

Reservoir into Buntzen Lake where it is stored for power production at the Buntzen 

generating Station located on the east shore of the Indian Arm of the Burrard Inlet. 

GVRD facilities include a drinking water intake structure at el. 132.65 m, a supply line 

conveying water through the left abutment of the dam to the watermain located downstream and 

a valve house located immediately downstream of the dam. 

1.2. PROJECT BACKGROUND 

Coquitlam Dam, as shown on Figure 2, was originally constructed to replace a smaller dam built 

on the site in 1903. The dam was seismically upgraded in 1980 and 1984/85 by placing 

buttressing fills on the upstream and downstream slopes. Studies completed in 1998/2000 

Coquitlam Dam Seismic Rehabilitation Page 1 


June 15, 2004

indicate that the hydraulic fill core and shell materials are looser than previous studies had 

indicated. Recent field investigations and engineering analysis have shown that the saturated 

hydraulic fills and some foundation soils could potentially liquefy during a moderate to large 

earthquake. Further post-earthquake stability analysis has indicated that the existing rockfill toes 

and the buttressing fills placed in 1980 and1984/85 are not adequate to contain the liquefied 

soils, and both upstream and downstream slopes of the dam could fail during a moderate to large 

earthquake. 

Figure 1. Coquitlam Dam location. 



June 15, 2004

Figure 2. Aerial view of the Coquitlam Dam. 

As a result of these findings the maximum operating level of El. 154.86 m was reduced to El. 

149 m in December 2000 as an interim measure. Since that time, studies have concentrated on 

identifying conceptual remediation options and obtaining engineering properties of the dam fills 

and foundation materials for design of structural improvements. 

Various options, including two structural remedial options (upstream and downstream 

embankments), decommissioning, and operational options, were investigated in 2002/03. 

Construction of a downstream embankment has been determined as the preferred structural 

remediation option. Higher cost, greater environmental impacts, engineering/construction 

difficulties, and operational constraints on both BC Hydro and the GVWD are the significant 

factors that have lead to the internal discounting of the alternative options. 

1.3. PROJECT DESCRIPTION 

The proposed downstream embankment option provides a cost effective solution to enhance the 

seismic withstand of the existing dam. This option involves construction of a rockfill 

embankment on the downstream toe of the existing dam (Figure 3), which requires relocation of 

the existing GVWD water supply pipeline and the valve house. The embankment will have a 

footprint of approximately 20,000 m 2 . The crest elevation will remain the same as the existing 

dam (161 m) with a maximum crest height of 31 m. A draft plan view and section of the 

embankment are provided in Appendix 1. 

The GVWD drinking water pipeline currently runs immediately downstream of the existing dam 

but would be within the footprint of the embankment. Relocation of this facility is necessary to 

keep the pipeline outside the footprint of the proposed embankment. The proposed relocated 



June 15, 2004

pipeline will run north along the existing spillway channel on the west side of the Coquitlam 

River for about 100 m and then turn to the west and follow the downstream toe of the new 

embankment. Geotechnical investigations to determine the actual alignment are currently 

underway (as of May 15, 2004). 

An estimated 250,000 m 3 of materials (impervious till and rock fills) will be required for 

construction of the embankment. Approximately 130,000 m 3 of rock will be mined from a rock 

quarry located on the east side of the Coquitlam Reservoir about 1 km north of the dam (Figure 

3). Geotechnical investigation to determine the impervious fill borrow sites have started. 

Geotechnical investigations have been undertaken at two locations on the west side of the 

reservoir. Additional locations east of the reservoir will also be examined to determine the best 

location to extract the fills. Granular earthfill materials will likely be obtained from outside 

sources. As a referral agency for the Land and Water BC permitting process, the GVRD has 

stated that off-drainage sources for impervious fill material are preferred and should be pursued 

by BC Hydro. 

Grant’s Tomb fish habitat will be dewatered and fish will be relocated in the early stages of the 

project, August, 2004 . This will allow for expansion of this fish habitat to compensate for the 

loss of habitat impacted by the downstream toe of the embankment and the relocated GVWD 

pipeline. The pond will be rewatered, but will be isolated from fish access until the pipeline and 

valve house work has been completed and the remaining embankment construction activities can 

be isolated from the pond (currently scheduled for January 2006). This will reduce the risk of 

construction related impacts to fish, as the pond is in close proximity to the active construction 

area. This will also allow for use of the pond as a temporary settling basin for silt and sediment 

before January 2006. A proposed compensation plan has been discussed with DFO and is 

provided in Appendix 2. Final details of the compensation plan will require Fisheries and 

Oceans Canada approval. 

The existing Coquitlam Dam spillway and low level outlet structures will not be impacted by the 

proposed project. Flow releases into Coquitlam River will also not be impacted. Fish flow and 

Water Use Plan agreements between BC Hydro and the regulatory agencies will be upheld 

during construction. 

Embankment and GVRD pipeline construction is expected to take 20 months starting in the 

summer of 2004. It has been estimated that the project will employ approximately 30 people for 

its duration. 

This work will require significant environmental controls at the dam site as well as the haul 

roads and working areas within the watershed. The reservoir will continue to supply drinking 



June 15, 2004

water throughout this project and the protection of the water quality within the reservoir will be a 

critical component of this work. The environmental requirements for the protection of the 

drinking water supply as well as for the protection of aquatic and terrestrial life and their habitats 

will be the focus of this environmental management plan (EMP). 

Figure 3. View of Coquitlam Dam and Reservoir. 

1.4. PURPOSE OF THE ENVIRONMENTAL MANAGEMENT PLAN 

The purpose of this EMP is to; (1) identify any elements of the work that could present a risk to 

the receiving environment, (2) identify any potential risks to the drinking water supply while 

working within the watershed boundaries and (3) describe how those risks can be mitigated 

through proper work management including incident response procedures and protocols that will 

limit impacts to the environment. 

The EMP is a guide and resource for BC Hydro construction staff, contractors, the 

environmental monitor and government agencies. Environmental risks associated with this 

project can be managed during project planning and construction as discussed in this EMP. The 

EMP is included as an appendix to tender documents issued by BC Hydro and will form part of 

the binding contract with the Contractors. It is the Contractors’ responsibility to become familiar 

with the contents of the EMP and to comply with the practices and procedures identified. 

1.5. ENVIRONMENTAL OBJECTIVES AND GENERAL SITE CONSIDERATIONS 

This project will be guided by BC Hydro’s mission statement, “To provide integrated energy 

solutions to our customers in an environmentally and socially responsible manner”. BC Hydro 



June 15, 2004

will plan work to avoid impacts on the environment. Where impacts are created, work will be 

done to reduce them and implement recommended mitigation techniques. 

B.C. Hydro and its contractors will keep environmental disturbances to the minimum necessary 

for accomplishing the planned work. BC Hydro and its contractors will take precautions 

necessary to avoid detrimental impacts on fish resources and habitat and avoid or minimize 

impacts to vegetation and wildlife. Potential contaminants of water bodies and ground water 

will be contained. All excavations will be filled in or properly protected for public safety and 

disturbed soils will be graded and protected from erosion. All disturbed areas will be revegetated 

and completely restored following an approved remediation plan. In general, BC 

Hydro and its contractors will leave the completed work areas in a safe, clean and 

environmentally stable and restored condition. 

1.6. AUTHORIZATION PROCESS 

The Coquitlam Dam Remediation Project triggers the federal Fisheries Act through impacts to 

Coquitlam River fish habitat. The Fisheries Act authorization requires an environmental 

assessment under the Canadian Environmental Assessment Act (CEAA). 

This process will require that BC Hydro initiates a comprehensive and timely review process that 

will address environmental and socio-economic issues for all affected parties (including 

Fisheries and Oceans Canada), while adhering to a tight construction schedule. 

The loss of Coquitlam River fish habitat area immediately downstream the dam will require 

habitat compensation according to Fisheries and Oceans Canada Policy of “No Net Loss” for the 

Management of Fish Habitat. In this case, habitat compensation could take a variety of forms, 

including enhancement of habitat within the mainstem Coquitlam River or within Coquitlam 

River tributaries. The process of identifying suitable compensation for this project is underway. 

A habitat balance sheet identifying the types and amount of habitat lost as well as that proposed 

to be gained through habitat construction is being prepared as part of the authorization process. 

Final decisions regarding appropriate habitat compensation is made by Fisheries and Oceans 

Canada. 

It is preferred by BC Hydro and GVWD that the compensatory fish habitat is constructed in the 

immediate vicinity of the construction work. If alternate compensation sites are required BC 

Hydro will consult all of the appropriate agencies, including the GVWD if the compensations 

works involve GVWD Lease Lands. 



June 15, 2004

1.7. ENVIRONMENTAL REGULATIONS 

Federal, provincial and regional environmental regulations are also applicable to the construction 

phase of the Project. All work carried out by BC Hydro and its Contractors must be in 

compliance with the applicable regulations. Some details of the significant environmental 

regulations applicable to this project are provided below. 

Federal Environmental Legislation 

The Fisheries Act is one of the federal water pollution control statutes. The Fisheries Act deals 

with the release of toxic substances to the environment and is applicable to the release of 

disinfectants or other potential contaminants, such as pH adjustments, chemicals and 

construction runoff carrying high contents of silts or oils and greases. Section 36(3) of the Act 

prohibits any person, unless otherwise authorized in the Fisheries Act, from depositing or 

permitting the deposit of a deleterious substance of any type in water frequented by fish. 

The Migratory Birds Convention Act prohibits the unauthorized taking or killing of migratory 

birds, their nests and eggs, and the deposition of harmful substances in areas frequented by 

migratory birds. 

The Canadian Coast Guard has advised B. C. Hydro it does not have an interest in this project 

pertaining to the Navigable Waters Protection Act as there is no public access to the site. 

British Columbia Environmental Legislation 

The Contractor will be required to adhere to all British Columbia laws and regulations for the 

management of water, air, land, wildlife, archaeological and other resources. This provincial 

legislation includes the Environmental Management Act, Waste Management Act, Water Act, 

Wildlife Act, Fisheries Act, Heritage Conservation Act, Environmental Assessment Act, Drinking 

Water Protection Act and the GVWD Act. 

Land Development Guidelines for the Protection of Aquatic Habitat 

The land development guidelines were prepared jointly by the Department of Fisheries and 

Oceans and the Ministry of Environment, Lands and Parks (now MWLAP). The Contractor is 

required to become familiar with and adhere to the guidelines established in this document. 

Regional 

BC Hydro and its Contractors will be required to adhere to regional air quality, sewerage and 

drainage and solid waste disposal as regulated by the GVRD in the Lower Mainland. 



June 15, 2004

Municipal 

Local municipal bylaws shall provide the regulatory basis for noise control and hearing 

protection. Noise bylaws or formal exemptions from the bylaws shall be used in setting hours of 

work limitations. 

GVWD Act, Regulations and Policy 

Some of this work will be completed within the boundaries of the Coquitlam watershed and the 

GVRD has established specific guidelines to protect the watershed and the quality of the 

drinking water (Appendix 3). Specific laboratory testing is also required for any material that is 

to be imported into the watershed (Appendix 4). The laboratory testing is in place to ensure that 

all fill materials imported into the watershed are clean and free of contamination. The testing 

requirements are based on GVRD’s draft guidelines that will be effective until the final version 

is released. This EMP will be amended to include the finalized GVRD guidelines when they are 

available. 

The GVRD Watershed Management Plan is also applicable to this project and covers many land 

management issues. The GVWD Watershed Lease also provides information relevant to 

working in the watershed. The references for both of these documents are provided in Appendix 

5. 

2. ENVIRONMENTAL RESOURCE ASSESSMENT AND MANAGEMENT 

2.1. DRINKING WATER SUPPLY 

The Coquitlam Reservoir and its 21,200 hectare watershed, currently provides 20% of the Lower 

Mainland’s drinking water supply. Through an agreement between BC Hydro and the GVWD, 

the majority of the water is used by BC Hydro for hydroelectric generation while the GVWD 

extracts a portion of the water for drinking water supply. 

The GVWD operates several drinking water treatment facilities located just south of the 

Coquitlam Dam. These include an ozone treatment facility, primary disinfection, corrosion 

control and secondary disinfection. The GVWD now has the ability to transfer Coquitlam water 

to the western portion of the Lower Mainland. This is a critical component of the GVWD’s 

operation since there is potential to shut down the other two reservoirs during winter storm 

which may cause an increase in turbidity. Maintaining the reservoir water quality will be a 

critical component of the Coquitlam Dam Project. 



June 15, 2004

2.2. AQUATIC RESOURCES 

The Coquitlam River historically supported healthy populations of coho, chinook, sockeye, pink, 

and chum salmon, steelhead trout and cutthroat trout, and Dolly Varden char (Decker 1996). 

Sockeye were eradicated from the watershed in 1911 when the height of the dam was raised and 

access to lake and upper river habitats was lost (Koop 1999). During the 1950’s and 1960’s, 

gravel removal from the riverbed for the purposes of flood control and commercial development 

resulted in severe loss of salmonid habitat through sedimentation, channelization, loss of suitable 

spawning habitat and removal of woody debris. From the late 1960s to present, gravel mining 

has been limited to areas outside the riverbed, however, sedimentation resulting from these 

operations continues to be a problem (Riley et al., 1997). 

Presently, coho, chum, steelhead and cutthroat are the most abundant salmonids. Longnose dace 

are also abundant (Decker 1998). Table 2 lists the fish species present within the Coquitlam 

River. Since the 1970s, a number of enhancement activities have been undertaken in an attempt 

to improve salmonid populations and to re-establish chinook and pink salmon stocks. In 

September 1997, adult pink salmon and chinook salmon were observed for the first time since 

the 1950s (Foy pers. comm.). 

Table 2. Fish species present in the Coquitlam River and tributaries. 

Salmon and Trout Species Other Species 

pink salmon longnose dace 

chinook salmon Dolly Varden Char 

chum salmon prickly Sculpin 

coho salmon 3-spine stickleback 

cutthroat tout largescale sucker 

steelhead trout Pacific lamprey 

rainbow trout 

Grant’s Tomb is a 5,000 m 2 salmon enhancement area consisting of an inlet-spawning channel, 

a rearing pond fed by a GVWD water supply line, and an outlet spawning channel. This habitat 

enhancement project was completed in 1995 and was jointly funded by BC Hydro and Fisheries 

and Oceans Canada. This enhancement project has proven to be very productive since its 

construction. 

Studies completed between 1996 and 2002 estimated the influence of off-channel habitat and 

other enhancement on the abundance and distribution of salmonids in the Coquitlam River. 

These studies have suggested that off-channel enhancement areas, particularly Grant’s Tomb, 

have increased coho production in the upper reaches of the Coquitlam River (Decker, 1998). 

During 1996-2000, mean annual estimates of coho density ranged from 22.0 to 58.5 smolts per 

100 m 2 in off-channel sites compared to 1.4 to 5.2 smolts per 100 m 2 in the mainstem (Decker, 

2000). Trout densities were also high with steelhead being the most common of the trout species 



June 15, 2004

observed (Decker, 1999b). Mean annual estimates of the number of coho smolts outmigrating 

from Grant’s Tomb during 1996 to 2000 ranged from 697 to 1,822 smolts (Decker, 2000). 

Construction of the downstream embankment will require the removal of a portion of the Grant’s 

Tomb habitat complex. The majority of the loss will be at the north end of the complex where 

the spawning habitat is located. As part of the project authorization process, BC Hydro is 

currently developing the habitat compensation plans in conjunction with the Department of 

Fisheries and Oceans Canada. The habitat development will ensure that DFO’s ‘no net loss’ 

policy is upheld. 

A post-construction monitoring program will be undertaken by BC Hydro to ensure that the 

habitat remains in good condition and continues to function as intended. Fish use and 

productivity will be monitored as part of the program to ensure that pre-construction productivity 

is attained. 

A fish salvage operation will be required to remove all the fish from the Grant’s Tomb pond 

prior to de-watering the system. This is a large habitat complex with a significant number of 

coho and other fish species present. This work will be completed in the fisheries work window 

when a lower abundance of fish are present. The large majority of coho smolts will have left the 

pond but coho fry will be present. 

Minnow trapping will be completed for several days prior to de-watering the area. About 50 

baited minnow traps will be set throughout the area each day for a 3 to 5 day period to remove 

the majority of fish. The traps will be pulled out and the fish will be processed (i.e. identified to 

species, counted, measured for length and potentially marked) each day. The fish will be 

released in a suitable area of the mainstem Coquitlam River. Minnow trapping provides an 

opportunity to remove many of the fish without harm. 

As the water levels are lowered, fish salvage crews will be on hand to net fish as they are 

stranded in pools. The pond will be de-watered slowly to allow time to capture as many fish as 

possible. Electrofishers will be on hand to salvage fish from larger isolated pools as required. 

2.3. VEGETATION 

The Coquitlam Dam lies within the Coastal Western Hemlock (CWH) Biogeoclimatic Zone 

(Meidinger and Pojar 1991). The southernmost 20% of the forested environment within the 

Coquitlam Watershed is largely a managed, second growth forest. Overall, within the entire 

watershed, the extent of old growth forest greatly exceeds the amount of second growth forest . 

The three main coniferous species that dominate this land are Western red cedar, Western 

hemlock and Pacific silver fir. 



June 15, 2004

An ecosystem based assessment of all proposed working areas including borrow sites, quarries, 

disposal sites and laydown areas will be completed once these construction zones are defined. 

The assessment will form the basis of a site-specific restoration plan for all of the working areas. 

The restoration plan will include short term erosion control features as well as a long term 

successional plan to return these areas to productive habitats. Permits for cutting and removing 

timber will be acquired through application to the Province and their referral to the GVWD, 

where tree cutting involves GVWD Lease Lands. 

2.4. WILDLIFE HABITAT 

The Coastal Western Hemlock (CWH) Biogeoclimatic Zone supports a wide variety of common 

wildlife as well as red and blue listed species. The species of concern (red and blue listed 

species) that may inhabit the area adjacent to the Coquitlam Dam include the spotted owl, 

marbled morale, Townsend’s Big-eared Bat, Keen’s long-eared myotis and the Pacific Water 

Shrew. 

Spotted owl are known to inhabit the entire reservoir portion of the Coquitlam Watershed and at 

least two pairs of breeding spotted owl have been documented using this area (McIntosh and 

Robertson, 2001). To protect this species, a Special Management Resource Zone has been 

established. This zone has been divided into sections in which at least 67 % of the mature forest 

area (i.e. > 100 years old) must be maintained (McIntosh and Robertson, 2001). 

A detailed wildlife assessment will be completed by a qualified and experienced wildlife 

biologist prior to the development of all working areas required for this project once these areas 

have been clearly defined. The wildlife assessments will inventory the composition and quality 

of all habitats in the proposed working areas as well as the surrounding areas. The wildlife 

assessment will also provide the species composition of the animals observed in the area as well 

as those likely to utilize the observed habitat types. An assessment for the potential for species 

at risk to be present will also be included. The wildlife assessment will ensure that protected 

species and their habitats are avoided during this project. This information will also be used to 

determine environmental effects during all phases of the project and to develop mitigative and 

compensatory measures as well as in the development of the restoration plan. Mitigation 

measures will include incorporation of best management practices and requirements for land 

developments, consideration of cumulative effects and prescriptions for replacement of impacted 

or removed critical habitat. 



June 15, 2004

2.5. RECREATION/VISUAL 

As the Coquitlam Dam is located within the restricted entry Coquitlam Watershed, the social 

impacts of the remediation are expected to be limited. With an estimated workforce of 30 people 

working at the construction site for 1.5 years, a minor and temporary increase in vehicle traffic 

will occur along Pipeline Road. Several large gravel pits currently in operation along Pipeline 

Road have already created significant heavy vehicle and equipment movement through the City 

of Coquitlam. BC Hydro is proposing to obtain the required fills for the construction from areas 

near the Dam. This will reduce the amount of hauling required in public streets and the 

associated impacts on the public. 

Potential losses to Coquitlam River salmon production have a potential to impact the commercial 

and recreational revenue created by this resource. This potential impact will be mitigated 

through several, large-scale habitat compensation projects. Long term monitoring will be 

undertaken to determine the productivity of the constructed habitats. The monitoring will 

include a detailed assessment of productivity and identify the need for any habitat improvements. 

2.6. HERITAGE OR ARCHAEOLOGICAL SITES 

BC Hydro has been actively consulting the Kwikwetlem First Nations in regard to this project. 

Archaeological Overview Assessments have been completed in the area of the dam as well as 

those areas disturbed during investigative studies conducted to date. Further archaeological 

assessments will be completed prior to the development of any working areas. If areas are 

designated as high potential to contain artifacts, a professional archaeologist may be required to 

be present during the initial ground disturbances in these areas. In other areas, the potential to 

locate an archaeological site or an artifact during the work remains. If any remains or items of 

historic interest or value are discovered during the project, the contractors will inform BC 

Hydro’s representative and stop the work activity until an appropriate archaeological assessment 

can be done. 

2.7. COMMUNITY RESOURCES AND CONSULTATION 

The goal of communications and consultation for the Coquitlam Dam Remediation Project is to 

ensure interested stakeholders have an opportunity to be well informed and to raise their issues 

and concerns for consideration. 

The parties contacted include Kwikwetlem First Nation, appropriate federal, provincial, 

municipal government agencies, Greater Vancouver Regional District and Water District 

(GVR/WD), and emergency preparedness agencies. In addition, local environmental and 

community interest groups have also been kept informed and advised at key milestones of the 

project justification and design phases. 



June 15, 2004

During the project investigation stage, BC Hydro was simultaneously conducting its water use 

planning process (WUP) for the Coquitlam River. This three-year multi-stakeholder process 

provided a venue for presentations and updates on the Coquitlam Dam remediation work. The 

Director or Dam Safety, Ray Stewart, provided a presentation on the project justification to the 

WUP consultative committee on May 14, 2001. A consensus agreement on the WUP was 

reached in March 2003 for increased water flows for fish and domestic water supply. 

BC Hydro is also represented on two committees formed by the cities of Coquitlam and Port 

Coquitlam, the City of Coquitlam Aggregate Task Force and the City of Port Coquitlam 

Hydrology Task Force. These committees also receive regular project updates upon their 

request. 

The general public receives information provided in updates in the “Tri City News” and “The 

Now” newspapers. A public information session was held in March 2004 where the project 

justification and design was discussed. The presentation also included a discussion on 

environmental management and fish habitat compensation. An additional project update 

presentation was provided to local environmental interest groups on May 3, 2004. 

Separate meetings have been held and are ongoing with GVR/WD, fisheries agencies, and 

Kwikwetlem First Nation. 

ISSUES 

Public safety is the key priority for the residents downstream and for BC Hydro, and no person 

or agency has questioned the justification or need for the dam seismic upgrade project. 

There are triggers to reopen the WUP consensus agreement if the seismic upgrade design does 

not return the reservoir to its normal operating range, returning anadromous salmon to Coquitlam 

Reservoir becomes feasible and is implemented, or, if flushing flows become feasible and can be 

implemented. 

Returning Anadromous Salmon to Coquitlam Reservoir 

The primary issue raised during the water use planning process and in separate meetings with 

Kwikwetlem First Nation was to return anadromous salmon to Coquitlam Reservoir. This issue 

is considered to be a "footprint" issue (resulting from the original and past upgrades/construction 

of the dam) and is therefore not part of the scope of the WUP or the seismic upgrade project. 

However, in a separate agreement, BC Hydro has partnered with the Bridge Coastal Fish and 

Wildlife Restoration Program to consider this issue. This agreement forms the basis for a multistakeholder 

review that is currently on-going. An advisory committee has been formed to make 

recommendations to BC Hydro on the feasibility, biological, environmental, financial and 



June 15, 2004

technical opportunities and risks, for accomplishing this task. The seismic upgrade will not 

impair or preclude this task from proceeding. 

Flood Control 

The City of Port Coquitlam's Hydrology Task Force has requested that BC Hydro consider 

providing 200 cms pre-spill capability at the dam to enhance flood control. This request also 

falls outside the scope of the seismic upgrade project as modifications to the low-level outlets 

would be required and these are not affected by the seismic upgrade project. 

Pre-spill capacity also requires that several issues downstream are addressed to ensure that 200 

cms can be "safely" passed downstream without liability to BC Hydro, including resolving 

flooding issues at Kwikwetlem First Nation’s cemetery. BC Hydro will continue discussions on 

this topic with the Hydrology Task Force. 

Borrow Pits and Construction Activities 

Burke Mountain Naturalists (BMN) have raised concerns specifically regarding the development 

of borrow pits in the Coquitlam watershed/reservoir where significant tree specimens grow, 

along sensitive streams and waterways. Other concerns regarding endangered species and 

species at risk have been raised. BC Hydro will keep BMN informed of the project plans, 

particularly plans for quarries and borrow pits. In addition, the GVWD has indicated, through 

the Land and Water BC referral process, that they prefer the extraction of impervious fills to be 

conducted off reservoir drainage. 

Construction activities are still in the formative stage and affects on the community will depend 

on the final design criteria, location and availability material. Consultation plans have been 

developed and BC Hydro will continue to update all stakeholders through agency meetings, 

public information sessions, and representation on the fish passage committee, city committees 

and at local environmental interest group meetings. Updates will also continue to be provided in 

news releases to local media and media interviews. 

Security of the GVWD Intake Pipe 

The GVWD intake pipe requires security, public access is restricted to this location. Security 

procedures are in place to minimize risk of unauthorized entry into the watersheds. 

3. CONSTRUCTION IMPACTS AND ENVIRONMENTAL MANAGEMENT 

3.1. GENERAL 

Long-term negative impacts to the natural resources in the area are not expected to occur as a 

result of the proposed construction work. Construction will be closely monitored to ensure there 

is no destabilization of adjacent slopes or contamination of the adjacent aquatic and terrestrial 



June 15, 2004

habitats. Restoration of the construction site and borrow areas will ensure that impacts to the 

environment are short term in nature. Affected fish habitat will be replaced. 

To minimize disturbances and impacts to the surrounding environment during construction, all 

the work will be conducted as per the guidelines provided in the DFO/MELP publication “Land 

Development Guidelines for the Protection of Aquatic Habitat”. The Contractor is required to 

adhere to the guidelines established in this document as listed in the sections of the EMP below. 

Generally, the potential environmental issues associated with the Project include the following: 

• Sedimentation of streams and the reservoir due to activities associated with site clearing and 

excavation; 

• Fuel, oil or chemical spills (including concrete/grout leachate); 

• Blasting effects from quarry development; 

• Waste management; 

• Sewage and refuse disposal; 

• Loss or degradation of fish habitat; and 

• Loss of wildlife habitat related to tree/vegetation removal and ground disturbance. 

3.2. CONTRACTOR’S SITE ENVIRONMENTAL PROTECTION PLAN 

As detailed in the Tender Documents, (Environmental Requirements), the Contactors are 

required to prepare and submit a site-specific Environmental Protection Plans (EPP) for their 

work. The EPPs will be required for each of the working areas including the dam site and all 

borrow, stockpile and disposal sites. The EPPs will be comprehensive, requiring specific details 

on all environmental protection initiatives including mitigation and emergency response 

procedures. The EPP should include, but not be limited to, the following items: 

• A site plan showing work areas, fuel containment areas and refueling locations, laydown 

areas, parking areas, stockpile and disposal areas, topsoil and woody debris stockpile areas, 

etc. 

• A detailed water handling plan including ditching requirements, site runoff, location of 

detention pond(s) and check dams as well as the location of all water exit points and water 

quality monitoring locations; 

• Sediment and erosion control installations including silt fence and containment berm 

locations; 

• Waste management plan; 

• Dust control plan; and 



June 15, 2004

• Spill response plan including location and contents of spill response materials storage and 

designated personnel to maintain spill response materials. 

The EPP will be submitted to the Project Manager fourteen (14) days following Notice of 

Award. BC Hydro, prior to commencement of any work on site, will review this document to 

ensure it meets the requirements of current legislation and the intent of this EMP. Based on this 

review, BC Hydro will either accept and/or require additional information and adjustments to be 

made. 

For work being undertaken on reservoir drainage, the EPP must include a water quality 

protection component to ensure reservoir water quality is unaffected by the work. In addition, 

EPPs submitted for work to be undertaken on reservoir drainage will be reviewed by the GVWD 

for its approval. 

3.3. ACCESS DEVELOPMENT 

The existing watershed road system will be used to access the dam site as well as the borrow and 

disposal sites. Development of any new roads within the watershed will need to be approved by 

the appropriate Provincial agencies as well as the GVWD. Upgrading and maintenance of the 

existing haul roads and access roads will be required. Replacement of existing culverts or 

installation of new culverts may be required as part of the Project. Any changes to road ditches 

or culvert replacements which requires instream work will be undertaken in such a manner as to 

reduce the impacts to the surrounding environment. All roads will be maintained and restored to 

suitable standards throughout the project as well as on project completion. 

Any instream work will be performed during low stream flows (or in the dry), and when 

favourable weather conditions prevail. All instream work will be conducted in isolation of 

flowing water. Water will either be diverted or pumped around the construction site to maintain 

water quality downstream of the construction. When necessary, fish exclusion barriers fences 

will be installed in the watercourse, and fish salvage will be conducted to remove all fish from 

within the exclusion area, prior to construction of the watercourse crossing. See Appendix 6 for 

details. 

3.4. SEDIMENTATION AND WATER HANDLING 

Silts and fine materials introduced into creek systems can have adverse effects to the aquatic 

environment. This construction site is particularly sensitive due to its vicinity to fish habitat. In 

addition, some components of this work will be completed on reservoir drainage and sediment 

laden water could potentially affect drinking water quality. Therefore, controlling sediment and 

run-off during construction work will be of high priority during this work. 



June 15, 2004

Note: To ensure the protection of aquatic life and their habitats, BC Hydro and its 

contractors will ensure that water exiting the construction areas and entering a 

drainage course will meet the following criteria: 

Total Suspended Solids: 1) 25 mg/l above background during dry weather 

2) 75 mg/l above background during design storm event 

There will be no sediment laden water permitted to enter the reservoir. 

Efforts will be made to control silt-laden runoff from the working and stockpile areas. This will 

involve utilizing a combination of several techniques on a site-specific basis as described below: 

• Installation of upslope drainage interception to remove clean uncontaminated water and 

reduce amount of water flowing through the site. 

• Minimize the exposed area for excavation at any one time. Once excavation is completed 

within an area it will be immediately restored to finish grade, layered with a compost 

medium and re-vegetated. Additional erosion control measures such as wattle fences, 

fascines and live pole drains may also be required in some areas. 

• Installation of cross-slope swales to enhance drainage and to prevent erosion of excavated 

materials. 

• Installation of silt fence material on the downslope side between working areas or stockpile 

areas and any drainages or wetlands; these will be set up prior to the initiation of any 

excavation work; the geotextile fence fabric shall be Terrafix 370 RF, AMOCO 2125 or an 

approved equivalent. 

• Isolation of any identified sensitive sites with fencing, ribbon or rope to exclude accidental 

intrusion. 

• Filter cloth and clean gravel will be readily available on-site should they be required; these 

materials provide a reasonably effective, on the spot filtration device in field situations and 

may be placed in any small ditches etc. to filter water laden with silt or sediments. 

• Ditches and culverts will be used to maintain adequate drainage over the newly excavated 

site. 

• Natural drainage patterns will be retained wherever possible. 

• Soil excavation stockpiles will either be completely contained by berms and silt fences or 

covered with polyethylene to prevent erosion. 

• Settling ponds will be constructed to clarify turbid water prior to release from the site. 

Construction of settling ponds will be completed in accordance with the ‘Land Development 

Guidelines for the Protection of Aquatic Habitat’. 

• Should site discharge water not meet the legislated criteria, the Contractor will be requested 

to implement other techniques to ensure the water entering watercourses meets authorized 

levels. These methods can include, but will not be limited to, trucking of water, dispersion of 



June 15, 2004

water over a larger portion of the forest floor, utilizing a filtration system, segregating clean 

and dirty water, installing additional settling ponds. 

As noted above (Section 3.2), BC Hydro will require a detailed water-handling plan, including 

potential contingency measures, as part of the comprehensive EPP to be submitted by the 

contractor. BC Hydro, the Project Manager and the Environmental Monitor, prior to contract 

initiation, will review the EPP and either accept or make recommendations for improvement. 

As part of the EPP, the Contractor will also be required to prepare a water quality monitoring 

program with sampling being conducted on regular basis by the Contractor’s Environmental 

Consultant. The water sampling conducted by the Contractor will determine the effectiveness of 

the site controls. Water quality monitoring results will be submitted to the project manager on a 

regular basis that will be outlined in the EPP. BC Hydro’s Environmental Monitor will also be 

undertaking water quality monitoring in a quality assurance role as required. 

Non-compliant water quality measurements will be reported to the Project Manager. Noncompliant 

water quality observed within the watershed will require immediate notification to the 

GVWD. Issues of non-compliance will be handled immediately. Failure to respond to noncompliance 

issues adequately will result in a stoppage of work until the situation is rectified to 

the satisfaction of the Environmental Monitor. 

3.5. EROSION CONTROL 

Silt fencing will be installed along the edge of all disturbed areas and soil disposal sites, in 

accordance with the manufacturer’s instructions. The Environmental Monitor may request 

additional silt fencing in areas that have a high risk of erosion or instability. 

In general, the following criteria will be followed when installing silt fencing: 

• The base of the silt fence fabric shall be installed in a 150mm deep trench and covered with 

native material to prevent sediment flow underneath the fence. 

• Supporting posts shall be installed on the side of the fence opposite to the potential silt 

generating activity. These posts shall be 50 mm x 50 mm dimensional lumber embedded 

450mm below grade and spaced every 1.4 meters. 

• Silt fencing that is moved or damaged for any reason shall be restored immediately. 

A significant amount of silt fencing may be required for this contract. Working area and 

stockpile area boundaries will need to be defined with silt fencing prior to soil disposal. 

Watercourses within the construction area will be protected with silt fencing, as required, while 

construction is occurring in the vicinity. 



June 15, 2004

Construction sequences that minimize the amount of exposed materials will also be 

implemented. For example, staged grubbing and stripping will be used during development of 

the borrow sites. Grubbing and stripping the development area in stages as they are required will 

minimize the amount of materials exposed to erosion and will reduce water quality concerns 

while working on the site. 

3.6. OIL AND FUEL 

Construction activities will require the use of a large amount of heavy equipment which contain 

fuels, lubricating oils and hydraulic fluids. The migration of these compounds either from spills 

during construction or later through seepage from saturated soils can negatively impact both the 

terrestrial and aquatic environments. 

To reduce the risk of these fluids entering streams, the following procedures will be employed: 

• The Emergency Spill Response Plan (Appendix 7) will be implemented when required; 

• The Emergency Spill Response Plan will be posted on-site, and all personnel made aware of 

its content and location of response materials; 

• Oil spill response materials and equipment such as sorbent pads, booms and leak proof 

containers, will be kept on-site in sufficient quantities and in an easily accessible location; 

• Used spill response materials will be bagged in heavy-duty polyethylene bags and disposed 

of as a special waste as soon as possible; 

• Bulk storage of fuels will not be allowed within the reservoir watershed boundary; 

• All fuel storage will be a minimum of 50 m away from any potentially fish-bearing waters or 

non fish-bearing waters that discharge into fish-bearing waters; 

• Appropriate fuel storage facilities will be constructed ensuring a minimum containment 

volume of 120% of the fluids being stored; 

• Fuel containment facilities will be constructed utilizing an oil impervious liner (polyethylene 

or equivalent) overlaying a layer of filter fabric (to prevent punctures from the underlying 

ground) contained by a dyke constructed from sandbags or stable fill material; 

• Waste containers will be appropriately labeled and stored in a secure location, protected from 

weather until removal and disposal can be arranged; 

• Any waste oil or materials will be removed from site as soon as possible in accordance with 

Transportation of Dangerous Goods requirements and the B.C. Special Waste Regulations; 

• Contaminated substrates will be contained, stored in secure waste containers and removed 

from the area when disposal is arranged; 

• Equipment operators and personnel responsible for spill response will review the spill 

response plan regularly to ensure that it is up to date, and all required materials are on site 

and easily accessible; 



June 15, 2004

• All machinery employed will be inspected for leaks, worn hoses or fittings, and appropriate 

repairs will be completed prior to access onto the site; and 

• All machinery will be equipped with appropriate drip trays or impervious dykes and sorbent 

pads. 

Additional requirements for the use of fuel and oil within the watershed are provided in the 

GVRD Watershed Regulations (Appendix 3). GVRD contacts are provided in the Spill 

Response Plan (Appendix 7) and they will be contacted should any spill occur within the 

watershed boundaries. 

3.7. VEGETATION REMOVAL 

No tree felling will be completed by the Contractor without the consent of BC Hydro or their 

representatives. Merchantable timber will be removed from site. Non-commercial species and 

smaller trees, shrubs, branches and slash from the harvest will be cut and piled for disposal. The 

slash will likely be disposed in one or a combination of the two following methods: 

1. Grind or chip the slash into a mulch that can be used to amend topsoil for restoration 

and/or mixed with other spoil material within the disposal sites; or 

2. Track-pack the slash with heavy machinery into the disposal pile in lifts small enough to 

ensure there is no loss of stability of the disposal pile as the material decomposes. 

No slash or debris will be disposed of within the riparian zone buffer strip (15 m from either 

bank of any watercourse). There will be no disposal of any material by burning. Areas cleared 

will be re-vegetated as described in Section 3.11, Site Restoration and Deactivation. 

Large woody debris (root wads and snags) accumulated while grubbing will be stockpiled for 

later use in site restoration. Soils stripped from the site will also be stockpiled in a stable 

condition for later use in site restoration. Site restoration requirements are detailed below in 

Section 3.11, Site Restoration and Deactivation. 

Tree falling will be avoided during the period of 01 April through 31 July to avoid possible 

contravention of Section 34 of the Provincial Wildlife Act. If tree falling is to be conducted 

during this time frame, a raptor/bird survey must be conducted by a qualified professional. 

All work will follow the Ministry of Forest’s Fire Protection Regulation. All vegetation removal 

will be conducted cooperatively with the GVRD’s Watershed Forester. 



June 15, 2004

3.8. CONCRETE AND GROUTING 

All concrete work must be completed in a manner that ensures water quality standards are 

maintained. Runoff from uncured concrete or concrete wash water may be high in pH. Levels 

over 9.0 pH units are considered harmful to fish and aquatic life. 

Note: BC Hydro and its contractors will ensure that water exiting the construction site and 

entering a drainage course will meet the following criteria: 

pH units Maximum 9.0, Minimum 6.0 

Turbidity Maximum 25 NTU 

Uncured concrete will be covered with polyethylene sheets or tarps during rain events to ensure 

high pH runoff is not generated. Wash water from the concrete trucks will be contained and 

removed from the site by the concrete supplier. The Contractor must ensure that water with 

elevated pH greater than 9.0 pH units does not leave the site. Elevated pH levels will be reduced 

with a CO2 bubbler system if required. 

The vast majority of the concrete and grouting work will occur downstream of the dam and will 

be off reservoir drainage. However, there is a possibility that some minor concrete and/or 

grouting work may be required on the crest of the dam or on the upstream face of the dam. All 

concrete or grouting work in these areas will be completely contained to ensure that no runoff 

enters the reservoir or adjacent drainages. 

3.9. ACID ROCK DRAINAGE 

Some rocks in British Columbia have significant concentrations of reactive iron-bearing sulphide 

minerals. Weathering may cause the sulphide minerals to oxidize, forming weak acids which 

may leach toxic concentrations of heavy metals such as zinc into waterways. Tests to determine 

the potential for generation of acid leachates as a result of quarrying and tunneling activities as 

well as the placement of rock for fish habitat will be conducted. If this potential is identified, 

site management plans will be developed to place reactive waste rock in a confined area or basin 

where it can be covered with compacted soil to reduce weathering and infiltration of 

precipitation and groundwater. Acid generating rock will not be placed in streams or 

watercourses. 

3.10. EXPLOSIVES AND BLASTING 

Explosives will be used at the rock quarry and for tunnel and bedrock excavation for the GVRD 

pipeline alignment. Any blasting near water will be carried out following the “Guidelines for the 

use of Explosives in or Near Canadian Fisheries Waters”. Explosives will not be used in the 



June 15, 2004

water and any blasts near fish bearing waters will be carefully controlled to ensure over 

pressures and vibrations reaching fish bearing water bodies will be well below the guidelines for 

the protection of fish. Temporary fish removal and exclusion may be required in the plunge pool 

area adjacent to the pipeline tunnel. 

The Environmental Monitor will be advised of any on site blasting. The Environmental Monitor 

will inspect areas for indications of disturbances to nesting birds or other wildlife. The 

Environmental Monitor will be advised of blast charge sizes and locations so the distance to 

waterways can be calculated to ensure a safe distance from fish bearing waters is observed. 

3.11. WASTE MANAGEMENT 

No contaminated sites or soils have been identified in the project area. There is a small potential 

for the presence of soil contamination in the area of the old townsite and operators housing 

historically located on the west side of the dam. If contaminated soils are encountered at this site 

or any other location during the project work, soils will be contained and treated in a manner 

compliant with waste management regulations. 

All waste, debris and other construction related materials (wood forms, hardware, plastics, etc.) 

will be removed from the site and disposed of in an appropriate manner. The Contractor will 

ensure established waste management guidelines are followed. The Environmental Monitor will 

instruct the Contractor on appropriate waste disposal for specific waste if required. The 

contractor will supply manifests for disposal of all special wastes or land filled wastes. 

The project is located within a protected watershed and, other than the potential noted above, no 

contaminated site issues are anticipated. However, a review of all sites will be conducted and 

any soil, sediment or groundwater contamination issues associated with the work will be 

resolved prior to construction. 

3.12. SEWAGE AND REFUSE DISPOSAL 

Temporary portable sanitary stations will be required for containment and subsequent disposal of 

sewage from these areas. The portable stations must be properly secured against collapse from 

wind and animals, and they will be maintained by the Contractor and emptied on a regular basis. 

Other solid wastes generated by the construction crews, at each site, will be contained and 

removed on a regular basis to maintain a clean and tidy environment and prevent the attraction of 

bears and other wildlife. 



June 15, 2004

3.13. HYDROLOGY 

Coquitlam Reservoir has been operated at lower than normal operating levels since December 

2000 to El. 149 due to dam safety concerns. In addition, a water management plan will be 

prepared to evaluate and reduce the risk of spill during work in the spillway channel. An 

emergency plan will be in place to remove all equipment and construction materials from the 

floodplain in the event of a spill. 

Existing flow agreements stipulated by the water use plan will be satisfied. Some temporary 

reductions in flow may be required to install and connect the headtank fish water release 

pipeline. If flow interruptions are required, DFO will be advised and consulted during the 

planning stages of this work. 

3.14. SITE RESTORATION AND DEACTIVATION 

Site restoration and access road deactivation will be required to reduce erosion and water quality 

concerns. Once work is completed within a site or when a particular section has been completed, 

the site or area will need to be stabilized and restored. Since this is a multi-year Project, a 

progressive approach to restoration will be required where restoration and stabilization is an 

ongoing process. It will not be acceptable to keep an entire site open and complete all of the 

restoration requirements at the end of the project. Ongoing restoration of the work sites will 

include: 

• re-contouring the site to ensure it is free-draining and to ensure slopes are graded to prevent 

erosion; 

• restoring drainage patterns to pre-construction condition or to the satisfaction of the Project 

Manager; and 

• hydroseeding the area with an approved erosion control seed mix. Note that topsoil may be 

required in some areas depending on the fill material to ensure sufficient ground cover is 

established. 

These conditions also apply to all temporary and permanent access roads that have been 

developed for the works as well as all other areas disturbed by the works. 

Final restoration of the working areas has not been finalized. Final restoration of the working 

areas will include: 

• grading and shaping the disturbed areas to ensure they are free-draining and stable; 

• excessively compacted areas will be scarified to a minimum depth of 150 mm; 



June 15, 2004

• the areas will be covered with topsoil from the site or an alternate growing medium as 

required, to ensure good growth of grasses and legumes; 

• the area will be planted with native trees and plants at densities specified by BC Hydro; and 

• woody debris will be placed throughout the site at densities specified by BC Hydro. 

Restoration of the downstream embankment area will include specific requirements to ensure the 

establishment of suitable riparian vegetation in the habitat compensation areas. Detailed 

planting plans will be developed as part of the compensation strategy for these areas. 

Restoration plans for areas on GVWD Lease Lands will be reviewed and approved by GVWD 

personnel prior to their implementation. 

4.0 ENVIRONMENTAL MONITORING 

BC Hydro will have a qualified Environmental Monitor on-site, as its representative, as required 

throughout the course of the contract. The Environmental Monitor will have the authority to 

stop or alter construction work if there is potential for harm to the environment. The 

Environmental Monitor will be responsible for quality assurance of the site environmental 

control measures and their effectiveness on behalf of BC Hydro. The Environmental Monitor 

will contact the GVWD if an issue affecting GVWD Lease Lands or GVWD water supply arises. 

The Environmental Monitor will also perform the following tasks throughout the duration of the 

project: 

• Review and understand the Contractor’s EPP, contract documents, project authorizations, 

agency guidelines and other documents and ensure all mitigation measures contained within 

are appropriately implemented; 

• Review contractor and BC Hydro work plans to ensure the conditions of the EMP and EPP 

are met, and to make recommendations to address any deficiencies; 

• Attend Project related meetings; 

• Act as BC Hydro environmental representative and liaison officer between government 

agencies, BC Hydro, GVRD, contractors and the public; 

• Review related permit applications if necessary; 

• Ensure all waste management initiatives are properly addressed; 

• Review and oversee implementation of drainage and sediment control plans and ensure that 

emergency response supplies and equipment are on-site; 

• Inventory contents of Emergency Spill Response Kits, and ensure they are appropriately 

stocked and maintained; 

• Inspect site machinery for oil leaks prior to mobilization on-site, and ensure leaks are 

repaired prior to machinery entering work area; 



June 15, 2004

• Assist in spill cleanup if necessary; 

• Collect water samples for site control testing; analysis will include but not be limited to; pH, 

turbidity (NTU), total suspended solids (TSS), oil and grease (mg/l). 

• Oversee contractor cleanup and restoration activities; 

• Monitor contractor work activities on a daily basis; 

• Contact approval agencies (i.e. DFO, MWLAP) in the event of an environmental incident or 

development of unforeseen site conditions with potential for serious environmental 

degradation; 

• Be on call should an emergency arise requiring the Environmental Monitor’s assistance; 

• Prepare correspondence as required; 

• Maintain detailed Project records including authorizations, EMP, EPP, permits, diaries and 

photographs; 

• Prepare weekly environmental inspection reports; and 

• Prepare a stand alone end-of-job environmental report within 60 days of contract completion. 

5.0 SCHEDULE 

Schedule of this project is contingent on the project approvals from regulatory agencies. 

Currently, the construction of the project is scheduled to start in fall 2004 and be completed in 

November 2006. Following is a list of anticipated dates for major project components: 

Project Component Anticipated Date 

Submit CEAA Application June 4, 2004 

Regulatory Approval July 30, 2004 

Grants Tomb Fish Salvage and Exclusion August 4, 2004 

Grants Tomb Fish Habitat Expansion August – September 2004 

Build Separation Dykes & Runoff Protection August – October 2004 

Site Preparatory Work December 2004 

Jet Grouting January 2005 – September 2005 

Pipeline Tunnel Work March - April 2005 

Pipeline and Valve House Construction April - December 2005 

Construct Spawning Channel October - December 2005 

Pipeline Tie-ins and decommissioning November – December 2005 

Pipeline Tunnel Work November – December 2005 

Embankment Construction October 2005 - October 2006 

Restore Fish Access to Grants Tomb January 2006 

Water Spawning Channels January 2006 



June 15, 2004

6.0 ORGANIZATION AND AGENCY CONTACT LIST 

The following is a list of agencies, organizations and individuals that can be contacted as a result 

of the Project’s emergency requirements: 

Contact Organization Position Phone Cell 

Graham Fenwick BC Hydro Project Manager 528-1928 

Li Yan BC Hydro Project Engineer 528-2491 

Bob Ellis BC Hydro Con. Manager 528-3004 

Carol Lamont BC Hydro Env. Coordinator 

Env. Monitor 

528-1877 862-3722 

Charlotte Bemister 

BC Hydro 

Community Relations 

528-2354 

Vince Busto DFO Agency Rep. 

Steven Lewis GVRD Project Manager, 

Pipeline 

451-6196 

John Worthen GVRD Watershed Mngt. 432-6429 250-7237 



June 15, 2004

APPENDIX 1 – Draft Plan View and Section of the Embankment 



June 15, 2004

APPENDIX 2 – Fish Habitat Compensation Plan 

A portion of the Grant’s Tomb fish habitat complex will be lost as a result of the Coquitlam Dam 

Seismic Rehabilitation Project. As detailed in Table 1, the fish habitat will be compensated to 

ensure there is no net loss of habitat as a result of this project. A conceptual layout of spawning 

and rearing habitats is provided in Figure 413L-C14-U477 (see attached). 

Table 1. Habitat Balance Sheet – Grant’s Tomb Habitat Proposal 

Habitat Habitat Habitat 

Rationale Net Habitat 

Type 

Lost Gained 

Balance (gain/loss) 

Grant’s Tomb – Habitat Area (m 2 ) 

Spawning 

Habitat 

Rearing 

Habitat 

279 452 Constructed spawning 

channels provide coho 

and steelhead brood stock 

for pond rearing. 

1040 904 Pond provides overwintering 

and refuge 

habitat for coho and 

steehead 

* subject to change due to final pipeline and valve house layout. 

173* 

-136* 

Water will be conveyed to the head pond structure from two sources. BC Hydro will install a 

24” diameter pipe originating at the fish flow release valves and discharge up to 28 cfs into the 

headpond. A second supply, with a capacity of approximately 8 cfs will be conveyed from the 

GVRD valvehouse. Water will flow out of the head pond in two directions to supply water to 

two components of the habitat development. Approximately 20 cfs will flow into the spawning 

channel while approximately 8 cfs will flow into the rearing pond. A small barrier will be 

constructed in the pond between the inflow and outflow to encourage water circulation. 

Pond expansion will occur after the fish have been removed and the pond is drained. This will 

allow the work to proceed in the dry. The current proposed compensation scheme shows the net 

replacement rearing area to be slightly negative and the net replacement spawning area to be 

positive (Table 1). Options to create more rearing habitat by expanding the pond further will be 

evaluated once the final layout has been confirmed. In addition, final pipeline alignment will be 

evaluated to determine if more lateral space at the spawning channel “elbow” is required which 

would result in the reduction of the length of this channel. It is intended to create net spawning 

and rearing habitat gains either at Grants Tomb or elsewhere in adjacent Coquitlam River 

habitats if further expansion at Grants Tomb is not feasible or space does not permit sufficient 

area for adequate spawning habitat. 

Riparian vegetation will be replaced in accordance with Tree Replacement Criteria and Planting 

Criteria and Recommended Native Tree and Shrub Species for Restoration and Enhancement of 

Fish and Wildlife Habitat. 

Final locations and design details will be determined once the pipeline alignment and valve 

house location have been determined. DFO will have final authority for fish habitat 

compensation requirements. 



June 15, 2004

APPENDIX 3 – GVRD Watershed Regulations 



June 15, 2004

Watershed 

Regulations 

OF THE 

GREATER VANCOUVER 

WATER DISTRICT 

GREATER VANCOUVER 

REGIONAL DISTRICT 

4330 Kingsway 

Burnaby, British Columbia, Canada V5H 4G8 

C:\Documents and Settings\AB Sound.CPQ15991622710\My Documents\SCFP\WatershedRegsFinal.doc

GREATER VANCOUVER WATER DISTRICT 

WATERSHED REGULATIONS 

The following rules and regulations of the Greater 

Vancouver Water District, hereinafter referred to as the 

District, are for the protection of the water sources in the 

Watershed from pollution and from fire. 

The policy of the District is to reserve its watershed 

lands for water supply and to exclude insofar as it can be 

carried out, all individuals seeking entry for other 

purposes or uses. 

It is absolutely essential that people entering the 

watershed realize that the water supply is potentially 

vulnerable to microbiological and chemical 

contamination through their actions and that they make 

every effort to prevent contamination by complying with 

these regulations. The GVRD’s drinking water 

treatment strategy has been developed based on the 

protection of the water supplies from contamination. 

Failure to adhere to the requirements of these 

Regulations shall be grounds for immediate eviction 

from the watershed and may result in permanent 

cancellation of entry privileges. 


1.0 SANITARY REGULATIONS 

1.1 Unless accompanied by an authorized 

representative of the District holding a 

valid Watershed Entry Permit, no person 

shall enter the watershed unless he/she has 

received instruction on the pollution 

prevention procedures and practices to be 

followed in the watershed, signed the 

required Health Declaration and has been 

issued with a Watershed Entry Permit as 

required by the GVRD’s Medical Health 

Officer. 

1.2 No person shall enter or remain in the 

watershed except for and during the 

carrying out of such work or business as 

has been authorized by the District. 

1.3 Persons entering the watershed must agree 

to the following in writing: 

(1) he/she will not enter the watershed 

when ill with diarrhea as a symptom, 

or when he/she has had severe 

diarrhea recently. 

(2) he/she will only enter the watershed 

when going to a valid job within the 

watershed - that is, a valid worksite to 

carry out a valid work duty. 


(3) he/she will use the sanitary facilities 

provided in the watershed. In cases 

where terrain does not permit the use 

of sanitary facilities normally 

provided by the District, he/she will 

provide alternate sanitary facilities 

acceptable to the District (e.g. 

camper’s toilet) and remove any 

sanitary waste for disposal outside of 

the watershed. In these cases, the use 

of alternate sanitary facilities must be 

approved by the District prior to 

entry. 

(4) He/she is aware of the Watershed 

Regulations and agrees to adhere to 

them, and to follow the instruction of 

authorized District personnel when 

required. 

1.4 A person experiencing illness of which 

diarrhea is a symptom or part will be 

required to undergo testing by the Medical 

Health Officer or to obtain a certificate 

from his/her physician stating that he/she 

is free from communicable disease prior to 

receiving clearance to enter the watershed. 


2.0 POLLUTION CONTROL REGULATIONS 

2.1 The disposal of refuse in the Watersheds 

of the Greater Vancouver Water District is 

prohibited. All refuse shall be removed by 

persons responsible for the production of 

said wastes and disposed of outside the 

watershed boundary in an approved 

manner. All work sites shall be left in a 

clean and tidy condition when work is 

completed. 

2.2 Fueling of equipment in the watersheds 

will normally be accomplished by means 

of a single pick-up mounted fueling tank 

(e.g. Tidy tank) except under exceptional 

circumstances as described in regulation 

2.4 following. 

2.3 During the fueling process, oil absorbent 

pads are to be used in case of spillage. 


2.4 The use of bulk storage tanks for 

petroleum products is allowed within the 

watersheds only under circumstances 

when there is no alternative. In these 

cases, all approved storage sites must be 

surrounded by impervious dykes and all 

hoses must be equipped with automatic 

shut off valves with locks. In addition to 

the above, approval must be obtained from 

a District representative when siting fuel 

storage tanks. The tanks must be located 

away from water courses feeding the lakes 

and secure from accidental destruction of 

the tank and dyke by vehicles, equipment, 

slides, etc. 

2.5 All equipment used in the watershed must 

be in sound mechanical condition, 

equipment displaying oil leaks and/or 

deteriorated hydraulic hoses, etc. is 

prohibited. 

2.6 Oil absorbent pads are required under all 

equipment left unattended overnight in the 

watersheds. 

2.7 Equipment contaminated with extraneous 

material (mud, sludge, etc.) is prohibited 

from entering the watershed. Pressure 

washing and/or steam cleaning and 

disinfection may be required as 

determined by Watershed Security 

personnel. 


2.8 All waste petroleum products, filters, etc. 

from equipment maintenance must be 

removed from the watershed for disposal 

and all used fuel drums must be removed 

from the watershed. 

2.9 Chemicals such as herbicides and 

pesticides are prohibited from District 

watersheds. 

2.10 In addition to the specific requirements 

listed above, a Water Quality Protection 

Plan may be required for specific projects. 

All activities related to the specified 

project must be carried out in accordance 

with the Water Quality Protection Plan 

which must be approved by the District’s 

Administrator of Quality Control or 

his/her designate, prior to commencement 

of the project. 


3.0 BURNING REGULATIONS 

3.1 No person shall light, fuel or make use of 

an open fire within the Watershed areas 

other than under and in compliance with 

the authorization and specification of the 

Administrator of Watershed Management 

or his/her designate. 

3.2 A person who within the watershed areas: 

(a) throws or drops a burning match or 

lighted cigarette, cigar, ashes of a 

pipe or other burning substance, or 

causes a fire by any means or for 

any purpose, shall ensure that the 

match, cigarette, cigar, ashes of a 

pipe, other burning substance or 

fire is extinguished before leaving 

the area. 

3.3 A person who sees an unattended open fire 

burning within the watersheds shall: 

(a) apply all reasonable effort to 

control and extinguish the fire; and 

(b) report the fire to GVRD staff 

without delay. 


4.0 GENERAL REGULATIONS 

4.1 There shall be no overnight camps. 

4.2 No person shall bathe or wash laundry in 

creeks, streams, rivers or lakes within 

District Watersheds. 

4.3 Hunting, fishing, and swimming are 

prohibited within District Watersheds. 

4.4 Domestic animals are prohibited within 

District Watersheds. 

4.5 Cutting of trees is prohibited within 

District Watersheds unless authorized by 

the Administrator of Watershed 

Management. 

4.6 In the case of accidents which may result 

in discharges of petroleum substances or 

other chemical substances, Watershed 

Management personnel should be 

contacted immediately. 


4.7 Due to the potential presence of disease 

causing microorganisms in any untreated 

surface water, direct consumption of water 

from natural watercourses is not 

recommended. 

4.8 In addition to the provisions herein 

contained, all operations being carried out 

on watershed lands shall comply with 

other applicable Acts and Regulations. 

Johnny Carline 

Commissioner 

Greater Vancouver Water District 

18/03/2004 


APPENDIX 4 – Procedures to Import Fill into GVRD Watersheds 



June 15, 2004

Draft Final 

Processing and Testing Procedures for 

Fill Materials and Aggregates Imported 

into GVRD Watersheds 

Updated April 2004

Table of Contents 

Introduction..................................................................................................................................... 1 

Part 1 – Definitions & References .................................................................................................. 2 

Part 2 – Materials Processing.......................................................................................................... 3 

Part 3 – Materials Testing............................................................................................................... 6 

Part 4 – Reporting ......................................................................................................................... 12 

Part 5 – Tables............................................................................................................................... 13 

Table 1 Key Information........................................................................................................ 14 

Table 2 pH & Total Metal Parameters, Detection Limits and Most Sensitive CSR Criteria. 15 

Table 3 BC Special Waste Leachate Extraction Parameters, Detection Limits and BC 

Leachate Quality Criteria .......................................................................................... 16 

Table 4 Petroleum Hydrocarbon Parameters, Detection Limits and Most Sensitive CSR 

Criteria....................................................................................................................... 17 

Table 5 Parameters for Determination of Acid Generation Potential.................................... 18 

Table 6 Analytical Fee Schedule & Routine Laboratory Sample Turnaround Times ........... 18

Introduction 

DRAFT FINAL (APRIL 2004) 

Introduction 

Due to the fact that GVRD Watersheds supply drinking water for the Greater Vancouver Region, 

certain procedures must be followed to ensure that imported fill materials and aggregates for use 

in the Watersheds are free of contaminants and that source water quality will not be impacted by 

the materials. These procedures form part of a multiple barrier system that is in place to protect 

the quality of source water in the Watersheds. 

The procedures would also apply to fill materials and aggregates for use both within and outside 

Watershed drainage areas, but exclude virgin gravel banks located within the Watersheds. 

The purpose of this document is to specify processing and testing procedures for fill materials 

and aggregates imported for use into the Watersheds. The guiding principle of this document is 

the importation and use of fill materials and aggregates that are contamination free. As well, the 

document provides guidelines for field sampling and the number of samples to be collected 

based on the estimated volume of fill materials and aggregates to be used, the appropriate types 

of tests to be conducted on the collected samples, and interpretation of test data. 

This document is comprised of five parts as follows: 

• Part 1 – Definitions and References 

• Part 2 – Materials Processing 

• Part 3 – Materials Testing 

• Part 4 – Reporting 

• Part 5 – Tables 

GREATER VANCOUVER REGIONAL DISTRICT 

Processing and Testing Procedures for Fill Materials and Aggregates Imported into 

GVRD Watersheds Page 1 of 18

Part 1 – Definitions & References 

Definitions and references are presented in Part 1. 

1.1 DEFINITIONS 


Part 1 – Definitions & References 

.1 “AGGREGATES ” mean bulk minerals such as crushed rock, stone and other materials. 

.2 “FILL MATERIALS” mean both natural and manmade materials. 

.3 “GVRD” means the Greater Vancouver Regional District. 

.4 “LABORATORY” means the analytical LABORATORY or LABORATORIES retained by the 

SUPPLIER or PROPONENT to perform the requisite testing. 

.5 “PROPONENT” means the PROPONENT or its designated representatives (e.g., Project 

Manager or Engineer) acting on the behalf of the PROPONENT who shall be responsible 

for carrying out the proposed works in the GVRD Watershed. The PROPONENT will liaise 

with the Watershed Management Division of the GVRD as required. 

.6 “SUPPLIER” means the SUPPLIER of the foreign fill materials and aggregates. 

.7 “WATERSHED” means the Capilano, Seymour and Coquitlam WATERSHEDS, Lower 

Seymour Conservation Reserve (LSCR), or any other WATERSHED that may be operated 

or used by the GVRD as a water supply for the Greater Vancouver Region. 

1.2 REFERENCES 

.1 BC Ministry of Water, Land and Air Protection. Analytical Methods for Contaminated 

Sites. http://wlapwww.gov.bc.ca/epd/epdpa/contam_sites/analytical_methods/index.html 

.2 Contaminated Sites Regulation, Waste Management Act (includes amendments up to 

B.C. 17/2002 and 109/2002), B.C. Reg. 375/96, Deposited December 16, 1996, O.C. 

1480/96, effective April 1, 1997 (and applicable updates). 

.3 Price, W. A. and J. C. Errington (January 1995). ARD Guidelines for Mine Sites in British 

Columbia. B.C. Ministry of Energy, Mines & Petroleum Resources (note: Ministry of 

Energy, Mines & Petroleum Resources was the former home of the present Ministry of 

Energy and Mines), Victoria, BC. 29 pp. 

.4 Special Waste Regulation, Waste Management Act (includes amendments up to B.C. 

52/95 and 109/2002), B.C. Reg. 63/88, Deposited February 18, 1988, O.C. 268/88, 

effective April 1, 1988 (and applicable updates). 




Part 2 – Materials Processing 



Part 2 presents source and material specifications as well as appropriate procedures for materials 

processing as follows: specifications, processing, handling, stockpiling, cleaning, and source 

quality control. 

2.1 SPECIFICATIONS 

.1 The SUPPLIER shall be responsible to provide a Stage-1 preliminary site investigation and 

corresponding report (i.e., Contaminated Sites, Report Submission) on the environmental 

history of the area of each source of supply of the imported materials and aggregates. An 

independent and qualified specialist in contaminated sites assessments shall undertake the 

site investigation and prepare the relevant report. The investigation may also include 

source testing of materials and aggregates if required by the aforementioned specialist. 

The purpose of the preliminary site investigation is to determine whether any substances 

have been used, stored or applied in the area in the past that could be deleterious if 

imported into the WATERSHED. 

.2 Fill materials and aggregates shall be supplied from contamination-free sources located 

outside the WATERSHED. 

.3 Fill materials and aggregates from the proposed sources of supply shall not contain 

substances over relevant limits when compared to the BC Contaminated Sites Regulation 

(CSR) for Agricultural Land use (BC Regulation 375/96, Schedules 4 & 5). As well, the 

materials shall not contain leachable metals and metalloids over the limits when 

compared with Leachate Quality Standards (Waste Management Act – Schedule 4, and 

Table 1, 1992). The acid generation potential of aggregate materials having sulphide 

minerals shall have an excess neutralization potential relative to potential acidity. 

.4 Contamination with manure of any kind, including animal and human sewage, shall make 

the source of supply of foreign fill materials and aggregates unsuitable for use in the 

WATERSHED. 

.5 The source of supply of the imported fill materials and aggregates shall be designated by 

the SUPPLIER and all the materials and aggregates supplied for the proposed work shall be 

obtained from the source named by the SUPPLIER. No other sources or material shall be 

used without the written permission of the PROPONENT. 

2.2 PROCESSING 

.1 Fill materials and aggregates shall be processed uniformly using methods that prevent 

contamination, segregation and degradation. 






.2 Blend aggregates, if required, to obtain gradation requirements, percentage of crushed 

particles or particle shapes as specified. Use methods and equipment approved by the 

PROPONENT. 

.3 Wash aggregates, if required, to meet specifications. Use only equipment approved by 

the PROPONENT. Wash water must not be contaminated. 

.4 When operating in stratified deposits use excavation equipment and methods that produce 

uniform, homogeneous aggregates. 

.5 Fill materials shall meet the requirements for gradation and other properties as specified 

by the PROPONENT for its particular use. 

2.3 HANDLING 

.1 Handle and transport materials and aggregates to avoid segregation, contamination and 

degradation. 

2.4 STOCKPILING 

.1 Stockpile materials and aggregates on Work Site in locations as indicated unless directed 

otherwise by the GVRD and PROPONENT. Do not stockpile on completed pavement 

surfaces. 

.2 Stockpiling sites are to be level, well drained and of adequate bearing capacity and 

stability to support stockpiled materials and handling equipment. 

.3 If stockpiling is out of the WATERSHED, it must be demonstrated to the PROPONENT and 

the GVRD that sufficient precautions and security are in place to protect the integrity of 

the stockpiled materials. 

.4 Separate different materials and aggregates by strong, full depth bulkheads or stockpile 

far enough apart to prevent intermixing. 

.5 Do not use inter-mixed or contaminated materials. Remove and dispose of rejected 

materials as directed by the GVRD and PROPONENT within 48 hours of rejection. 

.6 Uniformly spot-dump materials and aggregates delivered to stockpile in trucks and build 

up stockpile as specified. 

.7 Do not cone piles or spill materials and aggregates over edges of piles. 

.8 During winter operations, prevent ice and snow from becoming mixed into stockpile or in 

materials and aggregates being removed from stockpile. 






.9 If a mixture of road salt and sand is being produced or stockpiled on the property outside 

of the WATERSHED, take measures to make sure the road salt and sand mixture doesn’t 

get inadvertently mixed with the stockpiled materials. Road salt is not permitted for use 

in the WATERSHED. 

.10 The PROPONENT shall provide quality control records on all foreign fill materials and 

aggregates imported for use in the WATERSHED. These records shall include but not be 

limited to the following information: site profile, source of imported materials, material 

processing specifications, contract quantities, and trucking waybills. 

2.5 CLEANING 

.1 Leave material and aggregate stockpile site in tidy, well drained condition, free of 

standing surface water. 

.2 Remove any unused materials and aggregates from the Work Site as directed by the 

GVRD and PROPONENT. 

2.6 SOURCE QUALITY CONTROL 

.1 Acceptance of the imported materials and aggregates at source does not preclude future 

rejection if the materials and aggregates fail to conform to requirement specified, lacks 

uniformity, or if its field performance is found to be unsatisfactory. 

.2 Any imported fill materials or aggregates found to contain substances in excess of the 

limits specified in clause 2.1.3, herein, shall be removed from work-sites in the 

WATERSHED by the PROPONENT at its expense. The PROPONENT shall also pay the costs 

for any remedial measures and additional disposal expenses resulting from the use of 

these non-compliant materials. 




Part 3 – Materials Testing 

3.1 INTRODUCTION 



Part 3 presents three components respecting the materials testing program for imported materials 

and aggregates for use in GVRD WATERSHEDS: 

(a) Field sampling methods, locations and frequency 

(b) Testing program including size fraction to be tested 

(c) Interpretation of test data 

The purpose of testing is to provide a check that imported materials and aggregates for use in 

GVRD WATERSHEDS have not been contaminated by industrial or other sources, and ultimately to 

ensure that these materials and aggregates will not impact source water quality of the 

WATERSHED. As well, testing is to “flag” imported materials and aggregates unsuitable for use 

in the WATERSHED. If the materials and aggregates show evidence of contamination by 

anthropogenic chemicals, for example, these materials shall be unsuitable for use in the 

WATERSHED. 

3.2 FIELD SAMPLING METHODS 

.1 The PROPONENT shall pay for all sampling, testing and assessment costs associated with 

providing evidence to the GVRD the imported materials and aggregates for use in the 

WATERSHED shall meet requisite regulations, guidelines and methods for chemical 

examination as well as meet material processing specifications. 

.2 The PROPONENT shall utilize specialist subcontractors to perform the sampling and 

testing of imported fill materials and aggregates as well as relevant areas of the 

WATERSHED. A sampling and testing program shall be carried out and an assessment 

report shall be provided to the GVRD in a timely manner. 

.3 Prior to transport, representative samples shall be taken from the source of imported 

materials and aggregates for subsequent chemical contaminant testing. 

.4 If required, representative samples could be collected from relevant areas of the 

WATERSHED to assist in determining baseline levels of targeted parameters and to allow 

comparison of WATERSHED sample results with results of imported samples. 

.5 The fines fraction of the fill materials and aggregates shall undergo chemical testing 

because contaminants are likely to be present in higher concentrations in the fines 

fraction, except for tests associated with acid generation potential where the aggregate 

materials shall be examined. 






.6 The sampling frequency shall be based on the contract size of imported materials and 

aggregates, which shall be obtained from an uncontaminated source. For a relatively 

small contract of materials and aggregates (i.e., less than 2,000 m 3 ) a minimum of 3 

samples shall be collected for subsequent chemical contaminant testing, while up to 10 

samples shall be required for quantities that range from 2,000 m 3 to 25,000 m 3 and, for 

each 25,000 m 3 after that an additional 10 samples will be collected. 

For testing samples of aggregates for the determination of acid generation potential, the 

minimum number of aggregate samples to be collected for subsequent testing shall range 

from 3 to 26, which corresponds to aggregate stockpiles that range from less than 10,000 

to less than 1,000,000 tonnes. 

3.3 TESTING 

The collected samples shall be tested in accordance with analytical methods for contaminated 

sites approved by the BC Ministry of Land, Water and Air Protection: 

http://wlapwww.gov.bc.ca/epd/epdpa/contam_sites/analytical_methods/index.html 

Leachate Extraction Procedure for leachable metals and metalloids (Waste Management Act, 

Special Waste Regulation, Schedule 4) and other published methods (e.g., Price & Errington, 

January 1995). As a minimum, the samples shall be examined for indicator tests of 

contamination: total metals, leachable metals and metalloids, petroleum hydrocarbons, and 

potential for acid generation. 

.1 The PROPONENT shall pay for all testing costs associated with examining the collected 

samples. 

.2 The PROPONENT shall utilize LABORATORIES that are accredited for relevant testing 

through the Canadian Association for Environmental Analytical Laboratories (CAEAL), 

Standards Council of Canada (SCC) or a similar accrediting process. 

.3 The LABORATORY shall provide a laboratory quality assurance and quality control 

(QA/QC) plan specific for the collected samples. 

.4 The fines fraction of the fill materials and aggregates shall undergo chemical testing. The 

samples shall be dried in an appropriate manner then sieved and split as required to 

produce a sample of material passing through a sieve having 2-mm openings. A sieve 

equivalent to the US Bureau of Standards 10 (2 mm) sieve shall be employed. 

.5 For tests associated with acid generation potential, samples of the aggregate materials 

shall be examined. 

.6 Representative samples of soil or sediment fines shall be analyzed for total metals 

(Strong Acid Leachable Metals), leachable metals and metalloids (Leachate Extraction 






Procedure), and petroleum hydrocarbons (Volatile Petroleum Hydrocarbons as well as 

Light and Heavy Extractable Petroleum Hydrocarbons). 

(a) Total Metals and Metalloids in Soil (Strong Acid Leachable Metals or SALM) 

Samples of soil or sediment fines shall be analyzed using procedures consistent 

with the requirements of the appropriate regulatory agencies: 


After the samples are dried (60°C) and passed through a 2-mm (10-mesh) sieve, 

representative portions shall be removed for analyses. Subsamples of the

(c) Petroleum Hydrocarbons in Solids 



Samples of soil or sediment fines shall be analyzed using procedures consistent 

with the requirements of the appropriate regulatory agencies: 


The samples shall be analyzed for the determination of the following substances: 

• Volatile Petroleum Hydrocarbons (VPHs) 

• Light Extractable Petroleum Hydrocarbons (LEPHs) 

• Heavy Extractable Petroleum Hydrocarbons (HEPHs) 

Petroleum hydrocarbons shall be analyzed by gas chromatography equipped with 

flame ionization detection. 

Volatile Petroleum Hydrocarbons or VPHs (C6-10) shall be reported on both a 

“corrected” and “uncorrected” basis for BTEX constituents. 

Light Extractable Petroleum Hydrocarbons or LEHPs (C10-19) shall be reported 

on both a “corrected” and “uncorrected” basis for certain PAHs. LEPHs exclude 

the following low-molecular weight PAHs: naphthalene and phenanthrene. 

Heavy Extractable Petroleum Hydrocarbons or HEPHs (C19-31) shall be reported 

on both a “corrected” and “uncorrected” basis for certain PAHs. HEPHs exclude 

the following high-molecular weight PAHs: pyrene, benz[a]anthracene, 

benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[a]pyrene, 

dibenz[a,h]anthracene, and indeno[1,2,3,-cd]pyrene. 

Analytical results shall be reported on a microgram per gram dry weight basis, 

and corresponding detection limit values shall meet or exceed the most stringent 

Contaminated Sites Regulation guideline values for a given substance. 

.7 Representative samples of aggregates shall undergo testing for the determination of acid 

generation potential. 

(a) Characterization of Aggregates for Acid Generation Potential 

Metal leaching and acid generation are naturally occurring processes that can 

have negative impacts on the receiving environment. 






The minimum number of samples to be collected and subsequently analyzed is as 

follows: 

MASS OF EACH SEPARATE ROCK UNIT MINIMUM NUMBER OF SAMPLES 

OR AGGREGATE STOCKPILE (TONNES ) 



(b) Leachable Metals and Metalloids: Sample results for leachable metals and 

metalloids shall be compared with the Leachate Quality Standards (BC 

Regulation 63/88, Schedule 4 and Table 1). Contaminant levels found in the 

samples examined shall not exceed the most stringent Special Waste guideline 

values for a given leachable metal or metalloid. Any such exceedance shall 

result in rejection of the imported materials and aggregates for use in the 

WATERSHED. 

(c) Petroleum Hydrocarbons: Samples results for petroleum hydrocarbons shall be 

compared with the BC Contaminated Sites Regulation (CSR) for Agricultural 

Land Use (BC Regulation 375/96, Schedules 4 & 5). Contaminant levels found in 

the samples examined shall not exceed the most stringent CSR metals criteria for 

human health and environmental protection. Any exceedance shall result in 

rejection of the imported materials and aggregates for use in the WATERSHED. 

(d) Acid Generation Potential: In most cases, samples of aggregates with sulphide 

minerals whose net neutralizing potential (NNP), where NNP equals 

Neutralization Potential (NP) minus Acid Potential (AP), is negative are likely to 

be an acid drainage source. The acid drainage potential will be considered 

uncertain if aggregates have a ratio of neutralization potential to acidity potential 

(NP:AP) of less than 4:1 (Price & Errington, ARD Guidelines for Mine Sites in 

British Columbia, January 1995). Therefore, the imported aggregates shall be 

unsuitable for use in the WATERSHED. 




Part 4 – Reporting 


Part 4 – Reporting 

In a timely manner, the PROPONENT shall be responsible to provide to the Watershed 

Management Division of the GVRD a written report covering all aspects of work respecting field 

sampling and testing, as well as presenting and assessing the results or data obtained from the 

work. Ultimately, the PROPONENT shall be responsible for ensuring that the fill materials and 

aggregates for use in GVRD WATERSHEDS will not impact the water quality. 




Part 5 – Tables 



Part 5 contains tables: summary of key information (Table 1), summaries of soil and aggregate 

analysis parameters (Tables 3 to 5), and analytical fee schedule and typical laboratory turnaround 

times (Table 6). 




Table 1 Key Information 



In a timely manner, the SUPPLIER of the foreign fill materials and aggregates shall be responsible 

to supply to the PROPONENT of the proposed works in the GVRD WATERSHED the following: 

(a) Stage-1 preliminary site investigation and relevant report, in accordance with the 

Contaminated Sites Regulation, for each proposed source of imported fill materials and 

aggregates. The investigation is to be done by an independent and qualified specialist in 

contaminated sites assessments. 

(b) Evidence, to the satisfaction of the PROPONENT’s Project Manager, that the proposed 

materials and aggregates at source do not contain substances over the limits specified in 

clause 2.1.3, herein. 

(c) List of ‘contamination-free’ proposed sources of imported fill materials and aggregates. 

(d) Evidence, to the satisfaction of the PROPONENT’s Project Manager, that the proposed 

materials and aggregates meet the requirements for gradation and other properties as 

specified by the Proponent for its particular use. 

(e) Evidence, to the satisfaction of the PROPONENT’s Project Manager, that appropriate 

procedures were followed respecting materials processing, handling, cleaning and 

stockpiling. 

In a timely manner, the PROPONENT of the proposed works in the GVRD WATERSHED shall be 

responsible to provide to the Watershed Management Division of the GVRD the following: 

(f) Relevant quality control records on all fill materials and aggregates imported for use in 

the GVRD WATERSHED. 

(g) Services of specialist subcontractors for sampling, testing and assessing fill materials and 

aggregates for use in GVRD WATERSHEDS. 

(h) A quality assurance and quality control (QA/QC) plan specific for the collected samples. 

(i) Evidence, to the satisfaction of the GVRD, the fill materials and aggregates for use in 

GVRD WATERSHEDS do not contain substances over the limits specified in clause 2.1.3, 

herein. 

(j) A written report covering all aspects of work respecting field sampling and testing, as well 

as presenting and assessing the results or data obtained from the work. 






Table 2 pH & Total Metal Parameters, Detection Limits and Most Sensitive CSR Criteria 

Physical 

Analytical 

Parameters 

Analytical 

Method 

Detection 

Limits 

* BC 

Contaminated 

Sites 

Regulation, 

Most Sensitive 

Standards 

(µg/g dry wt) (µg/g dry wt) 

Soil pH 0.1 pH units — 

Strong Acid 

Leachable Metals 

Antimony T-Sb 10 20 

Arsenic T-As 0.5 15 

Barium T-Ba 1 500 

Beryllium T-Be 0.5 4 

Cadmium T-Cd 0.05 1.5 

Chromium T-Cr 2 60 

Cobalt T-Co 2 40 

Copper t-Cu 1 90 

Lead T-Pb 1 100 

Mercury T-Hg 0.001 0.6 

Molybdenum T-Mo 4 5 

Nickel T-Ni 2 100 

Selenium T-Se 0.5 2 

Silver T-Ag 0.1 20 

Thallium T-Tl 2 2 

Tin T-Sn 1 5 

Vanadium T-V 1 200 

Zinc T-Zn 1 150 

* As of CSR Regulation updated to July 26, 2002. 

* * If required to determine background levels of targeted parameters 

Source Fill Material and Aggregate Samples (µg/g dry wt) 



GVRD Watersheds Page 15 of 18 

* * Watershed 

Samples to 

Determine Baseline 

Levels (µg/g dry wt) 

Field QA/QC 

Samples 

(µg/g dry wt)



Table 3 BC Special Waste Leachate Extraction Parameters, Detection Limits and BC Leachate Quality Criteria 

Analytical 

Parameters 

Analytical 

Method 

Detection 

Limits 

BC Special 

Waste, 

Leachate 

Quality Criteria 

(mg/L) (mg/L) 

Physical 

Tests Moisture 0.1% wet wt — 

Extractable Metals 

Antimony Sb 0.001 — 

Arsenic As 0.001 5 

Barium Ba 0.001 100 

Beryllium Be 0.001 — 

Boron B 0.05 500 

Cadmium Cd 0.0002 0.5 

Chromium Cr 0.001 5 

Cobalt Co 0.001 — 

Copper CU 0.001 — 

Lead Pb 0.001 5 

Mercury Hg 0.00005 0.1 

Molybdenum Mo 0.001 — 

Nickel Ni 0.001 — 

Selenium Se 0.002 1 

Silver Ag 0.0001 5 

Thallium Tl 0.0001 — 

Tin Sn 0.001 — 

Uranium U 0.0005 2 

Vanadium V 0.001 — 

Zinc Zn 0.005 — 

* If required to determine background levels of targeted parameters 

Source Fill Material and Aggregate Samples (mg/L in waste extract) 




* Watershed Samples 

to Determine 

Baseline Levels 

(µg/g dry wt) 

Field QA/QC 

Samples 

(µg/g dry wt)



Table 4 Petroleum Hydrocarbon Parameters, Detection Limits and Most Sensitive CSR Criteria 

Analytical 

Parameters 

Analytical 

Method 

Detection 

Limits 

* BC 

Contaminated 

Sites 

Regulation, 

Most Sensitive 

Standards 

(µg/g dry wt) (µg/g dry wt) 

VPH - uncorrected for BTEX 10 200 

VPH - corrected for BTEX 10 — 

BTEX + Styrene 

Benzene 0.04 

Toluene 1.5 

Ethylbenzene 1 

Xylenes, o-, p- & m- 0.1 

Styrene 0.1 

LEPH - uncorrected for PAHs 250 1000 

LEPH - corrected for PAHs 250 — 

HEPH - uncorrected for PAHs 250 1000 

HEPH - corrected for PAHs 250 — 

PAHs 

Naphthalene 0.005 0.1 

Acenaphthylene 0.005 — 

Acenaphthene 0.005 — 

Fluorene 0.005 — 

Phenanthrene 0.005 0.1 

Anthracene 0.005 — 

Fluoranthene 0.005 — 

Pyrene 0.005 0.1 

Benz[a]anthracene 0.005 0.1 

Chrysene 0.005 – 

Benzo[b]fluoranthene 0.005 0.1 

Benzo[k]fluoranthene 0.005 0.1 

Benzo[a]pyrene 0.005 0.1 

Indeno[1,2,3,cd]pyrene 0.005 0.1 

Dibenz[a,h]anthracene 0.005 0.1 

Benzo[ghi]perylene 0.005 — 

* As of CSR Regulation updated to July 26, 2002. 

* * If required to determine background levels of targeted parameters 

Source Fill Material and Aggregate Samples (µg/g dry wt) 

* *Watershed 

Samples to 

Determine Baseline 

Levels (µg/g dry wt) 

Field QA/QC 

Samples 

(µg/g dry wt) 




Table 5 Parameters for Determination of Acid Generation Potential 

Analytical Parameters Analytical 

Method 

Detection 

Limits 

Static Tests (Pkg 2 or better): 

Net Neutralization Potential (NNP) 

Maximum Potential Acidity (MPA) 

Paste pH 

Sulfur 

Sulfate 

Sulfide 



Source Fill Material and Aggregate Samples 

Table 6 Analytical Fee Schedule & Routine Laboratory Sample Turnaround Times 

Sample Test Category Unit Sample Cost in 

2004 Dollars 

Routine Sample 

Turnaround Time 

(CDN$) (calendar days) 

Total Metals in soils including soil pH 105 5 

LEP Metals in soils including soil moisture 135 7 

VPH + BTEX + Styrene 85 5 

LEPH + HEPH+ PAHs 210 7 

Acid Generation Potential Evaluation, Static 

Tests, Package 2 or better 

95 5 

Total $630 5 to 7 days 




Field QA/QC 

Samples

APPENDIX 5 – References for Other applicable GVRD Documents 

1. The watershed management plan can be found at http://www.gvrd.bc.ca/water/watershedmanagement-plan.html 

2. Crown Lease. August 31, 1942. Lease between the Crown (Minister of Lands, Province 

of B. C.) and GVWD for Coquitlam Watershed 



June 15, 2004

APPENDIX 6 – Instream Work, Pump Around Diagram 



June 15, 2004

Extra Hose 

Water Flow 

Top of Bank 

Top of Bank 

Standby Pump A 

Water Pump A 

Upstream Dam 

Pump Intake Screen 

Fish Exclusion Fence (in fish 

bearing creeks) 

Top of Bank Top of Bank 

Section A 

Materials Required: 

Sandbag dam 

• Pumps: 3 pumps (2”- 6”) with sufficient hose: 

1 primary (A), 1 standby, 1 secondary (B) for dewatering work 

area. Gas/diesel pumps or electric sump pumps with generator 

• Fish Exclusion Fence: 1/4” hardware cloth supported with 

rebar stakes 

• Sandbags: should be pre-made, filled with clean granular 

material (preferably not native) 

• Plastic liner for dams: 6 mil poly or equivalent 

Well draining 

Vegetated Area 

A 

Hose 

Dewatered Area 

Work Area 

Water Pump B 

Dam and Pump Method for Working in Isolation of Flow 

Sandbags to 

secure hose 

nozzle 

Downstream Dam 

Sandbag 

Energy 

Dissipater 

• Use dam and pump method on narrow watercourses with limited stream flow to allow working in isolation of stream 

flow during construction. 

• Schedule construction during low flow period. 

• Set up pump and hose as shown or use other practical alternatives. Pump should have twice the pumping capacity 

of anticipated flow with a standby pump on site. 

Procedure: 

Dirty Water 

Dirty Water 

from Excavation 

1. Set up Water Pump A upstream of work site extending outlet hose downstream beyond limit of construction. It 

may be necessary to dig a small sump for the pump intake. If there is a sandy bottom, the pump intake should be 

placed in a perforated 5 gallon pail filled with drain rock to avoid sucking loose substrate into the pump. If creek is 

fish bearing, a fish exclusion fence should be installed either upstream of or around pump intake. 

2. Anchor the end of the hose with sandbags or rebar stakes and build an energy dissipater out of sandbags, rock or 

plywood to prevent scouring. 

3. Start Water Pump A to begin dewatering site. 

4. Construct upstream and downstream dams using sandbags. Sandbags should be piled well above the water line to 

avoid a breach. If sandbag dam leaks, a plastic liner (6 mil poly) can be placed on upstream face to seal. 

5. Use Water Pump B to dewater work site. If water is clean it may be pumped downstream. Once work starts and 

water becomes dirty, water is to be pumped to ground in a well draining vegetated area. If a suitable area is not 

available, dirty water should be pumped into a temporary settling pond or portable tank/truck. 

6. Complete construction work in isolated dewatered area 

7. Dismantle downstream dam, then upstream dam. Keep pump running to maintain stream flow. 

8. Once dams are removed, turn off pumps and allow flow to resume original course

INCIDENT 

APPENDIX 7 

COQUITLAM DAM SEISMIC REHABILITATION 

SPILL RESPONSE PLAN 

If a spill of fuel, oils, lubricants or other harmful substances occurs at the site, the following procedures will be implemented. 

1. ENSURE SAFETY 

Spill Response Steps 

1. ENSURE SAFETY 

2. STOP THE FLOW (when possible) 

3. SECURE THE AREA 

4. CONTAIN THE SPILL 

5. NOTIFY/REPORT (PEP 1-800-663-3456) 

6. CLEAN-UP 

(Circumstances may dictate another sequence of events) 

• Ensure Personal, Public and Environmental Safety 

• Wear appropriate Personal Protective Equipment (PPE) 

• Never rush in, always determine the product spilled before taking action 

• Warn people in immediate vicinity 

• Ensure no ignition sources if spill is of a flammable material 

2. STOP THE FLOW (when possible) 

• Act quickly to reduce the risk of environmental impacts 

• Close valves, shut off pumps or plug holes/leaks, set containers upright 

• Stop the flow of the spill at its source 

3. SECURE THE AREA 

• Limit access to spill area 

• Prevent unauthorized entry onto site 

4. CONTAIN THE SPILL 

• Block off and protect drains and culverts 

• Prevent spilled material from entering drainage structures (ditches, culverts, drains) 

• Use spill sorbent material to contain spill 

• If necessary, use a dike, berm or any other method to prevent any discharge off site 

• Make every effort to minimize contamination 

• Contain as close to the source as possible 

5. NOTIFY/REPORT 

• Notify appropriate Site Supervisor or alternate of incident (provide spill details) 

• When necessary the first external call should be made to (see spill reporting requirements): 

Provincial Emergency Program (PEP) 1-800-663-3456 (24 hours) 

• Provide necessary spill details to other external agencies (see spill reporting requirements) 



June 15, 2004

SUBSTANCE: 

SPILL REPORTING REQUIREMENTS 

PEP 1-800-663-3456 

AMOUNT: 

Oils > 100 litres 

Special Wastes 

- Oil with > 50 ppm 

(PCB) 

- Corrosive 

- Hazardous 

Any amount into water 

> 1 litres 

> 5 kilograms 

> 5 litres 

REPORTABLE TO: 



June 15, 2004 

PEP 

PEP, DFO & MELP 

Note: If in doubt regarding spill size, affected environment, material involved and whether reportable, err on the side of caution and report the 

spill. 

EMERGENCY CONTACTS 

Contact Organization Position Phone Cell 

Graham Fenwick BC Hydro Project Manager 528-1928 

Li Yan BC Hydro Project Engineer 528-2491 

Bob Ellis BC Hydro Con. Manager 528-3004 

Carol Lamont BC Hydro Env. Coordinator 528-1877 862-3722 

Charlotte Bemister 

BC Hydro 

Env. Monitor 

Community 

Relations 

PEP 

PEP 

PEP 

528-2354 

Vince Busto DFO Agency Rep. 

Steven Lewis GVRD Project Manager, 

Pipeline 

451-6196 

John Worthen GVRD Watershed Mngt. 432-6429 250-7237 

6. CLEAN-UP 

• Technical assistance is available from the Environmental Monitor on clean-up procedures and residue sampling. 

• All equipment and material used in clean-up (e.g. used sorbents, oil containment materials etc.) must be disposed of in accordance with 

MELP requirements. The Environmental Monitor will assist in compliance with MELP regulations. 

• Accidental spills may produce special wastes (e.g. material with > 3% oil) and contaminated soil. All waste disposals must comply with the 

B.C. Special Waste Regulations and the Waste Management Act. The Environmental Monitor will assist in compliance with MELP 

regulations. 

• Waste sorbent material may not be disposed of in a landfill without prior approval from MELP. 

• Contaminated soil must be treated and dealt with as required on a site-specific basis, and must comply with the requirements of the B.C. 

Contaminated Sites Regulations. 

7. SPILL REPORT 

The spill report should include the following information: 

• Name and phone number of person reporting the spill 

• Name and phone number of person involved with the spill 

• Location and time of the spill 

• Type and quantity of material spilled 

• Cause and effect of spill 

• Details of action taken or proposed to contain the spill and minimize its effect 

• Names of other persons or agencies advised

SORBENT SUPPLIERS 

Spill containment booms, sorbent sweeps and pads are also available from the below listed companies. Custom made kits and supplies are also 

available upon request. 

A. Acklands 1,3,4 (days) 521-8861 

742 Chester Road (after hours) 533-0696 

Annacis Island, New Westminster V3M 6J1 

B. Aquaguard 1,2 (days) 980-4899 

Unit #203, 1305 Welch Street 

North Vancouver, B.C. V7P 1B3 

C B.C. Bearing Engineers Ltd. 1,2,5 

722 Chester Road (after hours) 671-2265 

Annacis Island, New Westminster V3M 6J1 

D. Canada West Ecological Systems Inc. 2,8 (days) 328-0911 

P.O. Pox 911, Stn. 'A' 

Vancouver, B.C. V5C 2N7 

E. CG Industrial Specialties Ltd. 2,7 (days) 263-1671 

979 West Kent Avenue (after hours) 942-5739 

Vancouver, B.C. V6P 6K8 

F. Environ-Guard Products Ltd. 2 (days) 276-9112 

Unit #6, 4751 Shell Road 

Richmond, B.C. V6X 3H4 

G. Hazmasters Environmental Controls Inc. 2 (days) 420-0025 

3131 Underhill Avenue (after hours) 443-9908 

Burnaby, B.C. V5A 3C8 

H. Infratech Polymers Inc. 2 (days) 888-8808 

Unit #4, 1947 Telegraph Trail 1-800-567-4888 

R.R. #6, Langley, B.C. V3A 4P8 

I. Pigmalion Environmental Products 1, 2 (days) 521-9522 

Unit 5-A, 1595 Cleveden Avenue 

Annacis Island, Delta, B.C. V3M 6M2 

J. Spill-Check Environmental Products 1 (days) 549-1044 

P.O. Box 1952 1 800 565-6544 

Vernon, B.C. V1T 8Z7 

K. StanChem Inc. 6 (days) 685-1411 

800 Terminal Avenue (after hours) 685-5036 

Vancouver, B.C. V6A 2M8 

L. Tech/Power Industrial Supplies Ltd. 1 (days) 868-0190 

389 Queensway Avenue 

Kelowna, B.C. V1Y 8E6 

M. Total Distributing/Enviro Guard Products Ltd. 1, 2 (days) 987-7158 

Unit #6 4751 Shell Road (days) 276-9112 

Richmond, B.C. V6X 3H8 

N. Versatech Products Inc. 2 (days) 922-5357 

2437 Bellevue Avenue (after hours) 434-5600 

West Vancouver, B.C. V7V 1E1464-7857 

Note: Each type of sorbent has a specific use and purpose. 



June 15, 2004

Note: The following suppliers provide: 

Supplier 1 Cellulose treated sorbent booms, pads and socs 

Supplier 2 Polypropylene booms and pads 

Supplier 3 Cellulose treated pads 

Supplier 4 Clay sorbents (kitty litter) 

Supplier 5 Inorganic sorbent (Magic-Sorb TM ) 

Supplier 6 Natural fibre sorbents and booms 

Supplier 7 Sawdust and diatomaceous earth sorbents 

Supplier 8 Corn cob particulates 



June 15, 2004

Coquitlam Dam Seismic Upgrade Project ... - BC Hydro

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