The Feed - Quarter 1, 2019 - 8

Operating in the middle of the
bustling city of Denver, Colorado,
this city's municipal crews are
working hard to make the most out
of their asphalt recycling enterprise
while taking up the least amount
of space. The City and County of
Denver's asphalt recycling process
is a full-service operation. From
milling roads to paving new ones,
this city's crews ensure that the
streets are maintained.
For Doug Legg, manager with the
City and County of Denver, space
was the primary concern when
considering equipment. "We're
operating inside the City of Denver,
so property was very limited. To
solve that problem, we looked for a
machine that could feed, crush and
screen all on one chassis to keep
the overall footprint compact," says
Legg.
Mike Caldwell, regional sales
manager for KPI-JCI and Astec
Mobile Screens comments, "The
City and County of Denver wanted
a compact unit that still contained
all the necessary components,
which we were able to do with the
ProSizer® 3600 impactor plant.
This is a one-load move in most
markets, if not all markets, that's
what Astec Mobile Screens was
trying to achieve and that's what
we accomplished."
The environmentally-conscious
city was also looking for a unit that
has the flexibility to operate using
only electric power. While Legg
was prospecting and comparing
potential equipment, he considered
the equipment's footprint as well as
its ability to run using clean energy.
After selecting the ProSizer® 3600
plant, the crew set up a genset

8

THE FEED

to operate the unit. Legg says,
"We operate off a 500kw genset.
It is located about 120 feet to the
south of the plant, which keeps it
out of the dust area. In the future,
we can switch that to run it off a
transformer." Legg also adds that,
because the equipment is run using
electricity, they do not have to
worry about oil dust plugging and
overheating engines.
In addition to the small footprint
and operating using electricity,
the City and County of Denver
also had specific operational
requirements. Legg explained
that a capacity of 250-300 tons
per hour was a must-have for the
project. Eric Smallwood, aggregate
sales manager for Power Motive
Corporation, worked closely with
KPI-JCI and Astec Mobile Screens
and the City and County of Denver
to help address the City's concerns
and necessities for equipment
selection. "Production capabilities
were a strong driver. The ability to
offer a single-load machine that met
their throughput requirements,
while also minimizing as much
footprint as possible, was essential,"
explains Smallwood.

"We're
operating
inside the City
of Denver, so
property was
very limited.
To solve that
problem, we
looked for a
machine that
could feed,
crush and
screen all on
one chassis to
keep the overall
footprint
compact."
Doug Legg, manager
with the City and
County of Denver

MILLINGS TO ROADS
"The City and County of Denver's
street maintenance crews are
comprised of 242 full-time
employees. We produce, on average,
250,000 tons of asphalt per year.
The city, with its internal crews,
paves 250 lane miles a year and
we provide asphalt to an outside
contractor, contracted directly with
the City and County of Denver,

for a hot-in-place recycle process,"
explains Legg.
"From start to finish, we rotomill
our own streets, bring the millings
to this yard, process them through
the ProSizer® 3600 plant, and
haul them across the street to
our asphalt plant, which is a 300
tons per hour double-drum. We'll
haul that asphalt back out to our
internal crews and lay it back on the
The Feed - Quarter 1, 2019

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