A project for sustainable development
Right from the design stage, the Eastmain-1-A/Sarcelle/Rupert project has incorporated many environmental protection measures that take into account the concerns of the host communities.
Owing to a combination of dikes and canals that will improve water flow, the creation of the Rupert diversion bays will flood a minimal land area. Moreover, a substantial ecological instream flow and a series of weirs in the Rupert will protect fish habitat, preserve the landscape and maintain navigation and other activities in the area. Another important aspect is that the Crees are participating in all stages of the project, from design to environmental follow-up.
Follow-up
The follow-up will consist in assessing motorboating, canoeing and kayaking conditions in the Rupert, Lemare and Nemiscau rivers, Rupert diversion bays and Boyd and Sakami lakes. Hydro Québec will monitor flow and water levels in modified water bodies before and after diversion. Corrective measures will be implemented as needed to ensure that the streams remain navigable.
| Actions | Reasons |
|---|---|
A 29% instream flow will be restored to the river downstream of Rupert dam. |
The instream flow will reduce the drop in water level below Rupert dam so that the river remains navigable. |
A flow equivalent to the natural flow of the Lemare and Nemiscau rivers will be restored. |
The hydraulic structures will ensure that water levels in the Lemare and Nemiscau rivers are maintained. |
Eight hydraulic structures will be built. |
The hydraulic structures will raise the water level and improve navigability in stretches controlled by weirs. |
A safe detour will be built around work areas. |
Construction work in the water will interfere with navigation. |
Measures to make the diversion bays navigable and safe:
|
Creation of the diversion bays.
|
Measures to make the reduced-flow section navigable and safe:
|
The instream flow and eight hydraulic structures will ensure that the entire reduced-flow section of the Rivière Rupert remains navigable. However, routes will be changed in river stretches not controlled by hydraulic structures. |
Measures to facilitate navigation and shore access in the increased-flow section:
|
The increased flow may cause wood debris to accumulate in certain bays. |
Follow-up
The follow-up program will continue for up to 15 years after diversion of the Rivière Rupert. The mitigation measures introduced with land users will be monitored to see how they have adapted their hunting, fishing and trapping activities to the new environmental conditions.
| Actions | Reasons |
|---|---|
In cooperation with the Crees, measures will be introduced to enable trapline users affected by the project to pursue their harvesting activities.
|
The project will affect about 12% of the Crees' traplines (36 out of 286). Cree users will have to reorganize their hunting, fishing and trapping operations. Some camps are located within the future diversion bays or in areas slated for construction.
The project will change the configuration of some water bodies, the road network and snowmobile trails. Users will have to change some boat or snowmobile routes to harvest their traplines or reach their camps. The loss of certain hunting sites when the diversion bays are flooded and the reduced flow in the Rivière Rupert will disrupt Cree goose hunting.
Reduced flow in the Rivière Rupert will also change fishing conditions at Smokey Hill. |
Schedule for implementation of mitigation measuresme |
|
Follow-up
The follow-up will cover the effectiveness of measures introduced to help integrate the Cree workers into the project and to harmonize relations between the workers and the Cree communities. It will also deal with such aspects as careers and training.
| Actions | Reasons |
|---|---|
In cooperation with the contractors and Cree organizations, measures will be introduced to facilitate the integration of Cree workers at the various workcamps. Measures will be introduced to harmonize relations between workers and the Cree communities.
|
To help Cree workers, who will be away from their families for several weeks, adapt to a living environment that is very different from their native communities. To manage relations between workers and Cree communities, which are usually isolated. |
Schedule for mitigation measures |
|
Follow-up
Hydro-Québec is careful to maintain water uses in the rivers extensively used by the Crees. Water color, turbidity and suspended solids will be monitored in the Rupert and Nemiscau rivers, mainly in areas where Cree camps are located and at Waskaganish.
| Actions | Reasons |
|---|---|
A new drinking water plant will be built in Waskaganish to meet the community's needs until 2025. |
The capacity of the current water treatment plant cannot keep pace with the community's future requirements. |
Follow-up
From 2007 to 2011, we will conduct an annual follow-up on sport fishing and hunting by workers to characterize these activities and determine whether conditions need to be changed or incentives introduced to reduce the impacts.
The follow-up will also assess the satisfaction of the Cree tallymen affected by these measures.
| Actions | Reasons |
|---|---|
The Weh-Sees Indohoun Corporation will oversee hunting and fishing in an area covering 16,656 km2, which encompasses most of the workcamps. Outside this area, measures will be introduced to encourage workers to declare their fishing sites and catches voluntarily.
|
To prevent overharvesting of wildlife by workers who hunt and fish for sport, as well as the potential conflicts with Cree land users these activities may cause. The follow-up studies conducted for the Eastmain-1 project showed that this measure is appreciated by the Crees and effectively prevents overharvesting of wildlife.
|
Schedule of mitigation measures |
|
Follow-up
To manage the risk related to fish consumption, we will monitor mercury levels in the main species of fish eaten by anglers and the Crees. Monitoring will continue until the mercury levels allow for a consumption frequency comparable to the current level.
A detailed monitoring protocol will be submitted to the parties concerned for discussion and implementation.
| Actions | Reasons |
|---|---|
These measures will enable users of the area to continue to eat fish without being exposed to the undesirable effects of mercury.
|
Creation of the diversion bays will submerge a large quantity of terrestrial organic matter that will release methylmercury as it undergoes bacterial decomposition. Consumed by all aquatic organisms, this form of mercury accumulates throughout the food chain. The expected rise in mercury concentrations will be temporary. Mercury levels in fish will increase in the diversion bays and, to a lesser extent, in the Nemiscau, Lemare and Rupert rivers below the instream flow release structures. Mercury levels will peak 5 to 10 years after impoundment of the diversion bays, then return to normal after 10 to 30 years, depending on the species. Mercury content will be higher in fish-eating species like northern pike, lake trout and walleye than in species that feed on insects, plankton or benthos, like lake whitefish and sturgeon.
|
| Actions | Reasons |
|---|---|
The archaeology program will:
The Crees and, insofar as possible, members of the families concerned, will work at the digs with the teams of archaeologists. In addition, under the Boumhounan Agreement, Hydro-Québec created a fund to be administered by Niskamoon Corporation for the development and enhancement of Cree archaeological and cultural heritage. This archaeological research supplements the research done by Hydro-Québec.
|
Construction of the hydroelectric project will result in the loss of some archaeological sites. Surveys begun in 2002 made it possible to locate archaeological sites and digs conducted in 2007 led to the discovery of lithic tools, Amerindian ceramic shards, glass beads, etc.
|
Schedule of mitigation measures |
|
Follow-up
After the diversion bays are impounded, an annual follow-up will be done to track changes in deforestation by natural agents such as lower ice cover, waves and wind. Wood debris will be removed over a six-year period.
| Actions | Reasons |
|---|---|
|
Rupert diversion bays
|
|
|
To improve navigation, shore access, user safety, landscape quality and flow. To reduce loss of forest resources through the profitable recovery of accessible timber. |
|
Clearing: 2007 to 2009 |
|
Follow-up
After diversion, Hydro-Québec will assess the impact of the reduced flow on the river's scenery and on users' perceptions of the Rivière Rupert , and will identify any necessary mitigation measures.
| Actions | Reasons |
|---|---|
|
Eight hydraulic structures |
|
|
In addition to protecting fish habitats and facilitating navigation, the eight hydraulic structures will maintain average water levels over nearly half of the reduced-flow section of the Rivière Rupert to preserve the natural aspect of the landscape in these areas. |
The diversion of about half the flow in the Rivière Rupert will change the river's landscape. |
|
Rapids |
|
|
Steps will be taken as needed to improve the appearance of Oatmeal and Smokey Hill rapids after diversion, to maintain the rapids' scenic quality at two observation areas. |
Reduced flow volume and velocity in the Rivière Rupert will change the appearance of the rapids. |
|
Scenic lookouts and information panels
|
|
|
|
|
Schedule of mitigation and enhancement measures |
|
Follow-up
Fish communities will be monitored to ensure that species diversity and abundance is maintained and to check the efficiency of the spawning grounds created and the instream flow. If the monitoring reveals an unexpected impact or shows that an impact was underestimated, the impact will be studied jointly with the Crees and the relevant authorities, and corrective action will be taken quickly.
The follow-up in the Rupert diversion bays and reduced-flow section will include:
The follow-up in the increased-flow section will include:
| Actions | Reasons |
|---|---|
|
In the reduced-flow section of the Rivière Rupert |
|
|
A 29% instream flow will be restored downstream of Rupert dam. |
The instream flow will protect most of the lake sturgeon, lake whitefish, walleye, sucker and pike spawning grounds. |
|
A blanket of granular material will be laid at KP 20.4. |
The granular blanket will protect the anadromous lake cisco spawning ground; this species spawns every fall downstream of Smokey Hill Rapids. |
|
Seven weirs will be built. |
The weirs will mainly protect fish feeding and rearing habitats. |
|
The following will be developed:
|
Despite the construction of weirs below Rupert dam, the flow reduction will cause habitat loss. The new spawning grounds will sustain the species present. |
|
Production and seeding of young sturgeon:
|
Reduced flow may decrease sturgeon productivity. Seeding will improve species reproduction in a place where they used to be abundant. |
|
In the Rupert diversion bays |
|
|
The following will be developed:
|
The creation of a new 346-km2 body of water will cause an overall gain in fish habitat. Some spawning grounds will be flooded, but they will be replaced to maintain fish reproduction and diversity in the area. |
Schedule of mitigation measures |
|
Lake sturgeon is a species of special interest. In the north, these fish can live more than 80 years. The age at first spawning is about 25 for males and 30 to 40 for females. Reproduction frequency is about 6 years for males and 10 years for females. Lake sturgeon is of major environmental interest and is likely to be designated a vulnerable species. It is highly prized and only Cree fishermen are allowed to fish for sturgeon in the Baie James region.
The anadromous lake cisco population feeds in Baie-de-Rupert and Baie-James in spring and much of the summer. Many of these fish travel up the lower Rivière Rupert in August and September to spawn downstream of Smokey Hill Rapids. The project will have little effect on the large lake cisco spawning ground in the Rivière Rupert at Smokey Hill because of the instream flow and rock blanket, which will maintain water levels over more than three kilometres of the spawning ground.
Follow-up
The bird follow-up program will include aerial and field surveys in various areas to check the extent of the impacts on waterfowl, raptors, woodland birds and special-status species. It will also assess usage of the nesting platforms and new ponds.
| Actions | Reasons |
|---|---|
|
In the Rupert diversion bays |
|
|
Nesting platforms will be set up around the Rupert diversion bays for great gray owls and, as needed, for osprey and bald eagles.
Some ponds will be created in a wooded peatland north of the tailbay to encourage Bonaparte's gulls to breed. |
Creation of the diversion bays will flood the nesting areas of several bird species.
|
Schedule for mitigation measures |
|
Follow-up
After impoundment of the diversion bays, Hydro-Québec will monitor the abundance and density of moose and caribou in the area.
| Actions | Reasons |
|---|---|
|
In the Rupert diversion bays |
|
|
Helicopter fly-overs will track the movements of land animals and, if necessary, endangered animals will be rescued.
|
Impoundment of the diversion bays will force moose and caribou to travel around the flooded areas. |
Schedule of mitigation measures |
|
Follow-up
During impoundment, Hydro-Québec will track land animals by helicopter and, if need be, rescue endangered animals. Several years after impoundment, Hydro-Québec will inventory the beaver colonies that have established themselves along the shorelines of the new water bodies.
| Actions | Reasons |
|---|---|
|
In the Rupert diversion bays and the reduced-flow section of the Rivière Rupert . |
|
|
Prior to impoundment, the tallymen will trap or relocate beavers and bears in the areas to be flooded or exposed, according to previous inventories.
|
The creation of the Rupert diversion bays, the building of roads, camps and various structures, and exposure of the Rivière Rupert's banks may cause losses of wildlife.
|
Schedule of mitigation measures |
|
|
Woodland caribou |
|
|
|
In recent years, researchers have defined three caribou ecotypes: mountain caribou, which live in the Chic-Chocs mountains in the Gaspé and the Torngat mountains along the east coast of Baie d'Ungava, barren-ground caribou, which migrate thousands of kilometres every year to calve on the tundra, and woodland caribou, which live year-round in small, isolated, sedentary herds in the boreal forest. Woodland caribou is a vulnerable species in Québec. The Rupert diversion bays are one area where woodland and barren-ground caribou mix. In some winters, herds of barren-ground caribou travel as far south as the diversion bays then head north again in April to calve. The presence of woodland caribou in spring and summer indicates that the area is frequented by this species. However, their abundance and calving grounds in the region are not known. Special monitoring will be conducted for this species. |
|
Special-status birds |
|
|
|
The diversion bay area is frequented by short-eared owls, bald eagles and Bonaparte's gulls. The nesting habitat of some breeding pairs of gulls will change when the tailbay is created. To mitigate this impact, bog pools will be dug in a nearby treed peatland. Thirteen species of rare or vulnerable birds were counted in Baie de Rupert, including marbled godwit, sandhill crane, yellow rail and Nelson's sharp-tailed sparrow. These species will not be affected by the project. Two marbled godwit nests were discovered in June 2003 in the bay's riparian habitats. These are the first nests of this species recorded in Québec. |
|
Boreal chorus frog |
|
|
|
The boreal chorus frog is a tiny amphibian that grows to an adult size of less than 4 cm. Its presence in Québec was officially confirmed for the first time during the surveys conducted for the project, when the species was sighted in the high coastal marshes of Baie de Rupert. The project will not have any impact on this species. |
|
Special-status plants |
|
|
|
Four species of plants likely to be designated vulnerable in Québec were found in a 2-km strip of land bordering the Rivière Rupert: Gratiola aurea f. pusilla (golden hedge-hyssop), Hieracium robinsonii (Robinson's hawkweed), Hudsonia tomentosa (sand heather) and Canadanthus modestus (great northern aster). Only a few golden hedge-hyssop plants will be affected by the flow reduction and this species will receive special attention in the follow-up. |
Follow-up
Bank stability will be monitored along the reduced-flow stretch of the Rivière Rupert at the Waskaganish water intake and along the Grande Rivière estuary.
Our follow-up activities will include taking measurements to assess how the banks have changed from their baseline state, as well as verifying the effectiveness of our mitigation measures.
| Actions | Reasons |
|---|---|
|
Downstream of Rupert dam. |
|
|
The more sensitive exposed areas will be seeded with grasses to limit the risk of erosion. The existing armor rock at the Waskaganish water intake will be extended to protect the structure. |
Despite the reduction in flow, some areas will remain sensitive to erosion, particularly newly exposed banks. There are unstable slopes near the water intake. |
|
In the Grande Rivière estuary |
|
|
The erosion-sensitive sections of banks between La Grande-1 generating station and Chisasibi will be blanketed with granular material to stabilize the base of the slope. |
The increased flow in the Grande Rivière estuary may intensify the current rate of bank erosion. |
Schedule of mitigation measures |
|
Construction: 2007 to 2012
The scale of this project will require the use of at least six workcamps:
Our environmental compliance team
A dozen permanent site supervisors will ensure that:
The environmental management system of the SEBJ unit responsible for the Eastmain projects has been ISO 14001 certified since 2003. The certificate was renewed in 2006 under updated standard ISO 14001:2004.
The following components are to be monitored for environmental compliance:
| Actions | Reasons |
|---|---|
|
Drinking water |
|
|
Rigorous water sampling and analysis on a regular basis will ensure that workers in the various camps have excellent drinking water. |
The workers' health and quality of life need to be protected. |
|
Wastewater |
|
|
The efficiency of wastewater treatment equipment will be checked monthly; workcamp sewage will be processed through rotating biological disks, bioreactors or peatlands. |
The host environment will be protected and environmental discharge standards maintained. |
|
Waste |
|
|
All waste, other than hazardous waste, will be collected and transported to a trench landfill. |
This will protect the host environment. |
|
Recyclables and hazardous waste |
|
|
Paper, paperboard, metal and tires are recycled and transported to recovery and recycling centres. All hazardous wastes (mainly used oil) are also recovered and transported away from the Baie James area. |
Recycling protects the quality of the environment.
|
|
Contaminants |
|
|
All workers at the jobsite will be informed of the emergency plan for contaminant spills to enable them to act quickly and contain them if they occur. |
The environment will be protected from contaminants. |
| Actions | Reasons |
|---|---|
|
Quarries, sand pits, disposal sites for excavated materials, contractor areas, work areas, workcamps and temporary roads will be restored.
|
|
|
|
|
|
Schedule |
|
Environmental components to be monitored
Physical environment
Hydrology and hydraulics
Bank erosion
Sedimentary regime
Water temperature
Ice cover
Water quality
Biological environment
Fish
Vegetation
Land and semi-aquatic wildlife
Birds
Human environment
Cree society and culture
Public health and mercury
Hunting, fishing and trapping by Cree communities
Sport hunting and fishing
Recreation
Navigation
Landscape
Economic spinoffs and training programs
© Hydro-Québec, 1996-2012. All rights reserved.