3:90 FROM BOd 432 ¢ Evie

Letterto Ms. Susan Rauh

Page 2 of 2
Re: Haney ‘Main No. 3 - Stage II - Pitt River Crossing

February 22, 1993

a) One cannon will be required on cach foreshore. It iS anticipated that each cannon will
F located near the marsh/riparian boundary and will generally point towards the Pitt

iver. The proposed distance from the cannon to the l.ougheed Highway is
Pproximately 400 feet.

b) We anticipate the "scare cannons” will be required over a 6-month period from late
February to the end of August, 1993. If Sausfactory re-growth of the marsh is nat
achieved over this period, there is a possibility that these cannons may be required
again over a similar period in the following year since this District would have to
redeploy new plant material on the foreshore.

c) The cannons themselves are propane fired and produce nvise levels of 100 decibels
measured immediately adjacent to the cannon. Frequency of firing is anticipated to

be between 4 to 6 times per hour, at low tides when the marsh is exposed and from
dawn to dusk only.

Terra Lotic Resources has investigated various other options to eliminate the anticipated

predator problems and advises that this is the only practical method to protect the marsh area.

Terra Lotic Resources has also noted that this method is endorsed by the Canadian Wildlife
Service.

We understand that vuur municipality has been previously contacted by Mark Hillis of Terra
Lotic Resources to advise you of the issues discussed above. We are now following up this initial
contact and seek written approval from your municipality regarding our proposed use of "scare
cannons” on the Pitt River foreshores to protect the marsh area.
scheduled to comumence this restoration work in early March, 1993
comments by February 26, 1993 if possible.

As our construction crews ure
» we ask that you provide your

Please contact Mr. Jim Young, P. Eng.. at 432-6347 if you have any questions.

Yours truly,

T. R. Jervis, P. Eng.
Supervisor
Water Capital Works and Construction

IVY/:j

cc: Mark Hillis ) Terra Lotic Resources Fax: 988-9004
Tom Bell ) GVRD
Jack Mac Dougall ) GVRD

ITEM | PAGE |

| bo

GVYPITTRIV LET)

TOTAL Fee oes

rn be