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THE CORPORATION OF THE CITY OF PORT COQUITLAM C ¢ U N C | [ :

MEMORANDUM
MAY 30 1983

TO: B. Kirk, May 26, 1983
City Administrator

FROM: FE. Peters., P. Eng.,
City Engineer

SUBJECT: Report of Calcium Lignosulfonate and
Dust Treatment for Kingsway Shoulders -
Public Works Committee, May 24th, 1983

RECOMMENDATION:

That the City. use a flush coat treatment for the
shoulders on Kingsway Avenue from Westwood Street to Gately
Street at an approximate cost of $3,000.

BACKGROUND .AND COMMENTS:

. Council referred the dust control program for
Kingsway Avenue, back to Public Works Committee for further
Study..and also requested information on the environmenta|
effects of Calcium Lignosul fonate..

4 We have researched the use of Calcium Lignosul fonate
and find that the Dept. of Highways has been using it for 12 to
‘15. years on. gravel roads in’ the Province. . They have done a
number of tests in their own taboratories and also have had
discussions: with the Ministry of the Environment. They have
not found'this material to be harmful tn any way.. The material
is a by-product of the: forest industry and consists of:a binder
mixed with water. After pressure spraying on the roads it
soaks into the gravel, the water evaporates and the remainder
acts as a blnder which holds the gravel. together. Its
properties for dust controt are very similar to oi!. but without
the harmful effects. :

There is a minimum order requirement tor the Calcium
Lignosultonate because it is brought by tank truck trom the
United States. The minimum order actuaily costs about $2,500
with the remainder of the recommended $4,000 expenditure going
towards preparation of the gravel surface. The number of roads
which can be done for this amount is greatly In excess of the
fist given to Council tast Council meeting. We will be
preparing a program of additional roads to be done with this
material and will provide the information to Council.