THE CORPORATION OF THE CITY OF PORT COQUITLAM
MEMORANDUM

George Ulmer June 6, 1983
Works & Utilities Supt.

B. Anderson
Public. Works Foreman

Kingsway Avenue, Gately to Burleigh

| have checked with Imperial Paving regarding dust
layering and-.also flush coating Kingsway Avenue on both sides,
from Gately to Burieigh, and the side street which goes north
bestde and behind Lot !, Plan 10732. The total area to fiush
coat is approximately 2,000 sq. yds. The cost. of flush coating
this area is $2.69 per sq. yd. This inetudes a coat. of
special prime at 0.3 gal/sq. yd., RC 4 at 0.3 gal/sq. yd., and
1/2" clear crush/sq. yd. .

2028 sq.yds. @ $2.69/sq.yd = $5,455.32 Fiush coating

The cost of spraying this area with calcium
lignosulfonate is $0.55/ga!l and the rate of application is 0.5

galt/sq. yd.

2028 sq.yds x .05 gal/sq. yd. = [014 gal.

1014 gal x $0.55/gal = $557.70 Dust Layering

The total square yardage would take approximately 199
tonnes of asphalt, machina taid, at $31.75/tonne = $6,320.
WIth some preparations possibly the whole job could be done for

$12-15,000.

The problem with flush coating is the asphalt prime has
to be taid for a day or two before the flush coat. Vehicles
become covered with tar and the tar is also tracked into
bulldingse The binder then has to be laid down and invariably
someone drives or walks,through, again spreading the tar
around. The rock is usually very dusty and the flush coat has
a habit of bleeding during the heat of the summer which again

creates a problem of spreading the tar.

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