Coquitlam Dam Seismic Upgrade Project ... - BC Hydro

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;
Coquitlam Dam Seismic Rehabilitation Page 19
Environmental Management Plan – Version 4
June 15, 2004