Two Arrowtown streets will be monitored daily by Queenstown
Lakes District Council staff to prevent a repeat of last
summer's "completely unacceptable" bleeding tar.
Project manager Ken Gousmett said the surfaces of Adamson Dr
and Centennial Ave - both of which suffered tar bleeding of
the chip seal coats applied last summer - had been put on a
"Unfortunately, the seal coincided with a particularly hot
period, with temperatures reaching 32degC and considerably
more at the road surface."
The issue caused headaches for residents, tar getting on
cars, bikes, shoes and even pets and being tracked indoors at
"It was completely unacceptable at the time.
"Our response was to cover the seal with gravel, which helped
alleviate the worst effects.
"The problem had largely stopped by the new year," Mr
The council had since worked to prevent the problem from
recurring. It was discovered the road structure was fine and
the issue was with the first seal coating.
While a road would normally have two seal coats applied, a
year apart, it had been decided to apply the second, lighter
seal coat later in February-March, when the weather was
"At this stage we are not seeing any more problems with
bleeding and that issue may have been resolved, but we're not
going to take any chances."
The existing seal would be inspected on a daily basis on all
hot, dry days and mitigation work would be carried out at
short notice if bleeding occurred.
"We would also be really pleased if the community could let
us know if they have any concerns," Mr Gousmett said.