The CORPORATION OF THE CITY OF PORT COQUITLASI

-2.-

1. Mr. Knight's December 7th, 1974 proposal outlined three
increased levels of drainage control beyond that provided for by the
Flood Contzol Programme. The Public Works Committee recommendation is
based on an investigation of only one higher level of drainage control,
that resulting from the ten year return rainfall. Mr. Knight's December
7th, 1974 proposal also was predicated on his investigation covering the
entire area affected by the Flood Control Programme. The Public Works
Committee recommendation frankly suggests that the Level of drainage
control provided under the terms of the Flood Control Programme is

-sufficient in some areas of the flood plain. The above is an attempt
to explain why Mr. Knight's original estimate of approximate!: $24,000
is reduced to $10,000,

2. The Flood Plain area south of the C.P.R. tracks has been
considered by successive Councils for a number of years as the City's
primary future industrial area. Developments taking place in this area
in the past and at present reinforce this plan. The undersigned is very
concerned that as more industrial development takes place and there is
no reason to suggest that it won't, quantity and rate of runoff will
increase substantially beyond the drainage control capacity provided under
the terms of the Flood Control Programme. It is felt that it is essential
that information on this potential problem be obtained concurrent with the
design work being undertaken for the Flood Control Programme. It was
suggested by Alderman Ranger that some type of acreage surcharge payment
could be provided by industrial development to offset improved drainage
control capital expenditures.

3. Cedar Ditch and Hyde Creek dvain through present and future
built up residential areas. It is the opinion of the undersigned thet it
is essential to have knowledge as to ‘vhether these water courses are
capable of handling the instantaneous runoff from the ten year return
rainfall. I don't believe that the questions that have been raised with
regards to the Lincoln Avenue diversion and the single pump proposed at

Prairie Avenue can be totally and Satisfactorily answered without this
information.

4. At the present time Crippen Engineering Ltd. are engaged by
the Provincial Water Resources Department. Any requests from the City for
Crippen Engineering Ltd.. to investigate various items of concern have to
be cleared with Mr. Bonham. If the requests do not fall within the terms
of the flood Control Programne, Crippen Engineering Ltd. are notin a’
position to accede to our requests. If the City engages Crippen Engineering
Ltd. the City is in a position to obtain reqiested investigation and in-

formation.

Respectfully submitted,

v.G. Borch, P. Eng.,
City Engineer.