December 17, 1993
Jeff Yip, P.Eng.

City of Port Coquitlam
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Liaison with Environmental Agencies’. ‘

Associated Engineering enjoys a good working relationship with both
B.C. Environment’s Fish and Wildlife Branch and the Federal
Department of Fisheries and Oceans. This relationship has been
developed on a number of projects completed by Associated
Engineering including several drainage nump stations and the-
Coquitlam River Flood Control Program. We are familiar with the
concerns of these environmental authorities regarding the installation
of drainage pumping stations within fish habitat. :

Throughout the design process, Associated Engineering will liaise with-
the environmental authorities to keep these agencies up to date and
obtain their input in a timely manner.

Preliminary Design

Completion of the drainage study will allow a preliminary design for
the pump station to be completed. This design will size the structure,
select pumps and establish the general arrangement for the new pump --
station including any inlet work and screens. 2

Associated Engineering has been involved in the design of pump .
stations which are "fish friendly" and incorporate means of allowing
juvenile fish to pass through or around the pump station facility without
significant mortality rates. This is typically achieved by the use of
either archimedean screw pumps or fine screens and a smail fish pump

in front of the lead drainage pump. Our experience has shown
archimedean screw pumps are typically cost effective for larger pump
stations. We believe at this location the most cost effective approach
will be to install submersible drainage pumps with fish screens and a‘
fish pump in front of the lead pump.

ASSOCIATED f-
ENGINEERING