NOTE
SUBJECT:
Consultation
with
Kansas
Department
of
Transportation
TO:
FILE
FROM:
Stephen
Hoffman
DATE:
9/
19/
05
On
September
19,
2005
I
called
Mr.
Lon
Ingram,
Chief,
Materials
and
Research
of
the
Kansas
Department
of
Transportation
to
discuss
the
use
of
chat
in
pavement.

The
Kansas
DOT
allows
the
use
of
chat
as
an
aggregate
in
hot
mix
asphalt
(
HMA),
Portland
cement
concrete,
bases,
drainage
applications,
slurry
seals
and
cover
aggregates
for
chip
seals.
Though
KDOT
specifications
permit
the
use
of
chat,
the
only
significant
use
in
construction
products
is
in
HMA
and
slurry
seals.

Mr
Ingram
noted
that
they
have
discontinued
the
use
of
chat
as
an
aggregate
in
snow
and
ice
control
and
as
unbound
aggregates
for
road
surfacing
and
shoulder
surfacing.

KDOT
specification
manual
is
in
the
process
of
being
rewritten.
KDOT
will
have
a
draft
version
of
the
manual
on
our
web
site
this
week.
The
final
version
may
not
be
final
for
several
months.
Let
me
know
if
you
want
the
links
and
I
will
forward
them
to
you
when
available.

Mr
Ingram
noted
that
he
checked
with
Richard
Schwartz
(
KDOT
Chief
Chemist)
about
a
possible
leaching
study.
He
did
not
remember
such
a
study
but
did
recall
testing
samples
of
chat
for
total
lead
content.
Mr
Ingram
did
have
a
copy
of
an
Oklahoma
report
that
address
many
of
the
concerns
with
chat
and
attached
the
report
that
is
also
available
on
the
Oklahoma
web
site.

Mr
Ingram
suggested
that
I
contact
Don
Carlson,
Industrial
Programs
Manager,
who
would
be
a
good
person
to
contact
with
KDHE.
His
phone
number
is
785
296
5500.
