Environmental Impact Assessment(EIA) Registration for the ...

REVISED PROJECT DESCRIPTION AND ENVIRONMENTAL IMPACT ASSESSMENT (EIA) REGISTRATION
FOR THE NEPISIGUIT FALLS GENERATING STATION MODIFICATION AND REHABILITATION PROJECT
• the installation of a new 1.2 m (3.9 ft) diameter, 85.3 m (280 ft) long rubber dam on the
top of the spillway dam;
• the replacement of the damaged trash racks and intake deck outside the power house
building;
• installation of post-tensioning anchors;
• various ancillary works including the installation of a new chain link fence and gate and
extension to the existing retaining wall at the north-end of the forebay, removal of the
cooling water chambers and general maintenance on the fine trash racks and butterfly
valves; and
• the installation of various communications and electrical infrastructure.
2.1.2 Project Activities
The Project consists of eight main activities, as follows:
• installation of Coffer Dam;
• installation of a work platform;
• concrete demolition and surface repair;
• post-tension upgrade by setting of rock anchors;
• installation of the rubber dam;
• replacement of the trash rack system and intake deck;
• ancillary works; and
• removal of the Coffer Dam and work platform.
Each of these activities is further discussed below in Section 2.2 (Construction).
2.2 CONSTRUCTION
Construction will begin after approvals under the provincial EIA and federal EA (if applicable)
processes have been received, and following approval of the Project under the applicable
provincial and federal acts and regulations. Provided these approvals are granted, site
preparation and physical construction could begin as early as June, 2012.
There are several stages to the construction process, as outlined below. There are several
activities that will also take place once repairs to the NFGS are completed. These have been
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