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From YouTube: Sustainable Trails Presentation
Description
Video of a presentation done by Trails Supervisor, Greg Seabloom, at the March 11 OSBT meeting. The presentation is on sustainable trail construction.
A
Good
evening,
good
evening,
everybody
nice
to
be
here
with
you
this
evening
and
what
I
want
to
do
is
take
an
opportunity
to
talk
about
pearl
sustainability,
which
is
a
very
important
aspect
of
what
we
do.
I
materials
program,
one
of
many
pieces
that
we
consider
in
the
trail,
design
and
planning
and
construction
process.
So
this
presentation
is
an
adaptation
of
a
of
a
webinar
that
I
co-presented
out
back
in
December.
That
was
hosted
by
American
trails,
which
is
one
of
probably
two
major
professional
trade
organizations
in
the
country.
So
it
was
basically
is.
A
It
was
a
training
webinar
for
trails
professionals
on
some
aspects
of
trail
sustainability
and
some
of
the
fundamentals
and
principles,
and
we
saw
that
there
was
some
value
to
have
this
presentation
here
and
talk
about
it
here
in
terms
of
where
some
of
the
practices
that
we
use
on
the
ground,
where
some
of
the
fundamentals
and
driving
factors
that
we
utilized
in
trade
design,
so
look
a
little
too
fast,
so
wanted
to
utilize.
The
flood.
The
2013
flood
is
an
opportunity
to
look
at.
How
did
our
trail
system
fair
in
regards
to
sustainability?
A
These
are
the
primary
things
that
we're
looking
at
when
looking
at
a
trail
alignment
where
the
construction
style
and
techniques
that
going
to
producing
a
trail.
So
one
is
the
trail
sustainability,
piece,
another's
protection
of
natural
and
cultural
resources,
budget
labor
implications
of
building
a
trail,
aesthetics
and
experience
of
that
trail
that
it
provides
and
the
community
interests
and
I
won't
leave
it
there
just
to
kind
of
dig
into
it
a
bit
further.
A
A
So
we
have
several
folks
on
on
staff
who
do
trail
design
and
we
pull
in
some
outside
resources
from
time
to
time,
and
it's
really
picking
those
five
disciplines
if
you
will
fail
sustainability,
natural
and
cultural
resources,
budget
and
labor
aesthetics
and
user
experience
and
community
interests,
and
that's
all
information
that
goes
to
the
trail
designer
that
the
trail
designer
holds
and
then
they
trail
design
happens
in
the
field.
It's
a
field
exercise,
maps
and
gps
units
and
in
other
pics
and
toys,
help
us
with
that
process.
A
But
we
do
it
in
the
field
and
we
come
up
with
proposed
alignment
or
alternatives
to
bring
to
the
table
for
consideration.
I'm
also
wanted
to
touch
base
on
Oh
SNP's
trail
design
and
management
guidelines
matrix.
So
this
information
is
available
on
our
website,
and
this
is
some
foundational
criteria.
Around
trail
management
decisions
based
on
class
of
trail
and
seers
class
1
through
5,
with
class
1
being
a
less
developed,
more
remote,
more
rugged,
type
of
trail
class,
5
being
a
a
more
developed
type
of
trail,
and
also
looking
at
different
user
groups.
A
Hiking
biking
in
a
question
and
a
lot
of
other
factors
know
in
terms
of
maximum
trail
grade
trail
width
surfacing
material
things
like
that.
So
this
is
some
of
the
information
that
we
use
as
a
foundation
when
we're
looking
at
trail
alignment
and
design
criteria
so
moving
forward.
What
is
trail
sustainability
that
world's
that
word?
Sustainability
gets
used
a
lot
and
we
go
to
trails,
and
what
I
wanted
to
do
is
talk
about.
A
You
know
common
definition,
what
we
think
about
when
we
think
about
trail
sustainability
at
0
s
and
P,
and
the
definition
that's
on
the
screen
here
is
what
comes
out
of
a
long-standing
National
Park
Service
documented
in
91
that
that
defines
trail.
Sustainability
is
being
a
trail
that
supports
current
and
future
anticipated
uses
as
minimal
impact
on
the
natural
systems
of
the
area
as
negligible
soil
loss
or
erosion.
A
In
regards
to
gentle,
the
moderate
trail
profile
grades
welcome
to
the
cross
slope
in
grade
reversals
I'm,
starting
to
throw
out
terms
and
technology
out
there
and
I'm
going
to
talk
more
about
those
in
a
little
bit.
So
those
trails
that
failed
during
the
flood.
So
this
this
photo
is
from
the
managed
to
taco
trail.
We
saw
Rosen
gullies
from
several
inches
to
several
feet.
Deep.
We
have
large
depositional
areas.
All
that
eroded
material
had
to
go
somewhere.
A
Some
of
that
probably
ended
up
in
Nebraska,
but
a
lot
of
it
ended
up
during
class
of
Education
on
OS
and
peel
and
and
they
didn't
meet
sustainability
criteria
because
they
have
steep
trail
grades
relative
to
what
the
cross
slope
is
again.
I'll
talk
more
about
that
in
a
bit.
They
had
an
existing
Rosen
issues
and
we
had
attempted
numerous
prior
fixes
and
water
bars
and
check
steps
to
try
and
keep
these
trails
functional.
A
So
I'm,
going
to
step
back
a
little
bit.
I'm
going
to
because
I
can
tell
everybody
here-
is
getting
really
excited
about
trail
design
and
I'm
going
to
get
into
this
a
little
bit
more
and
do
a
little
trail
design
101
here
and
provide
some
of
the
foundational
principles
and
the
specifics
on
the
ground
that
we
look
at.
So
I'm
going
to
talk
about
about
sustainable
chair
grades,
contour
trades,
contour
trails
and
grade
reversals.
A
So
this
is
some
of
the
stuff
that
we
look
at
when
I
talk
about
trail
grade
relative
to
cross
slope
is
a
foundational
piece
of
trail
design
in
regards
to
sustainability.
Cross
slope
is
simply
the
steepness
of
the
hillside
if
you
dropped
a
basketball
at
the
top
of
the
hill
and
let
it
roll
straight
down.
That's
the
that's
the
cross
slope.
So
what
we
look
at
when
we
strive
for
is
trail
grades
that
are
typically
one-quarter
to
one-third
of
what
the
cross
slope
is,
is
what's
advisable
for
preventing
erosion.
A
So,
for
example,
on
our
top
diagram
here
we
have
a
12-percent
cross
slope,
so
pretty
gentle
train.
That
means
that
if
you
walk
horizontally,
100
feet
you're
going
to
go
up
about
12
feet
in
elevation
and
a
quarter
to
a
third
of
that
we
can
get
away
with
about
a
three
to
four
percent
trail
grade
and
expect
minimal
soil
erosion.
A
bit
steeper,
hillside,
25%,
cross
slope.
We
can
go,
stick
seven,
maybe
an
eight
percent
grade
on
that
and
expect
very
little
erosion
and
then
a
50-percent
cross
slope,
a
pretty
steep
hillside.
A
We
can
go
about
ten
percent
and
the
math
tells
us
we
go.
Maybe
sixteen
or
seventeen
percent
grades
much
deeper,
but
we
tap
out
at
ten
percent,
because
that's
really
a
maximum
that
we
can
look
up
before.
We
start
to
have
a
lot
of
erosion,
so
present
mean.
Does
it
mean
we
do
all
of
our
trails
at
boys
and
pee?
In
that
way?
A
No
some
of
them
need
to
be
steeper,
for
you
know
other
reasons
within
those
five
criteria
that
I
talked
about
either
earlier
Environmental
Protection,
we
might
do
to
go
steeper
to
avoid
a
sensitive
resource.
User
groups
might
be
looking
for
a
steeper
trail
to
climb
one
of
the
peaks
and
the
mountain
backdrop
of
boulder.
So
we
have
to
go
sleep
sometimes,
but
we
have
to
recognize
that
that
increases
our
50
year
life
cycle
costs.
A
According
the
Park
Service
data
by
it
could
be
five
times
it
could
be
up
to
20
or
more
times,
there's
some
other
tricks
in
our
trade
grade.
Whistles
are
really
a
big
thing:
we've
really
stopped
using
water
bars.
Water
bars
are
maintenance
intensive.
They
cause
some
other
impact
on
the
landscape.
We
maintain
the
many
water
bodies
that
we
have,
but
we're
not
really
adding
any
new
ones
into
the
system.
Great
reversals
are
basically
their
undulations
in
the
trail.
A
So
if
you
average
out
all
these
roses
and
flowers
in
the
trail,
we
have
about
this
photos
from
the
newly
constructed
lions
lair
trail
on
the
widow,
my
property
and
the
west
side
of
Mount
Sanitas,
and
it's
about
it
eight
percent
grade
in
there.
But
you
can
see
if
you
know,
parts
of
it
rise
up
steeper
than
that
and
then
drop
down
a
little
bit,
and
it
creates
little
points
in
the
trail
that
we
can
gain
water
and
prevent
soil
erosion.
A
So
I
want
to
talk
about
steep
trails,
fault
line,
trails
and
contour
trail
design
as
well
too.
So
this
is
a
key
aspect.
You
know
this
particular
diagram
shows
a
trail
that
is
crossing
this
little
drainage
and
climbing
up
this
hill,
and
in
this
instance
this
trail
drops
pretty
steep
into
the
drainage
time
to
keep
out
of
it
and
traverses
a
little
ways
and
then
go
sleep
up
the
hillside
and
all
those
steep
sections
where
the
trails
are
running
more
perpendicular
to
the
topo
lines
on
your
are
we're
going
to
see
more
erosion.
A
So
what
we
do
is
contour
trail
design,
where
we
are
the
trail
alignment,
mimics,
the
natural
topography
of
the
landscape,
and
that
allows
us
to
drain
water
off
the
trail
much
more
effectively
going
back
to
our
trail
grade
relative
to
the
cross
slope,
and
it
requires
that
you
know
typical.
We
have
to
do
switchbacks
and
climbing
turns
in
order
to
gain
elevation
going
up
a
upper
slope.
Some
of
the
questions
that
we
are
sometimes
is
well.
A
If
we
have
to
do
that,
if
we
have
to
switch
back
up
property
or
of
a
section
of
land,
isn't
that
more
impact
to
the
landscape,
then,
if
we're
able
to
just
climb
straight
up
it
and
in
a
short
term
perspective,
I
would
say
yes,
but
in
a
long-term
perspective,
I
would
say
no,
because
those
steep
trails
are
much
more
prone
to
erosion
and
trails
are
red
people
don't
want
to
walk
in
them
because
they're
awkward
to
walk
in
they
walk
next
to
it?
Causes
widening
causes
braiding,
and
we
see
more
impact
requires
repeated
construction.
A
A
So
again,
we
recognized
that
some
trails
on
an
OSP
system
need
to
be
steep,
so
summit
access
trails,
climbing
access
trails,
others
where
the
community
is
interested
in
in
steep
trails
or
where
maybe
resource
protection
considerations
require
that
we
have
to
go
sleep
and
we
have
to
build
structures
to
support
those
so
steps
retaining
walls.
Things
like
that
that
we
have
to
put
in.
However,
that's
what
we
have
to
be
cognizant
enough
is
that's
a
pretty
high
investment
of
labor
and
money
over
time.
A
So
this
is
some
data
that
came
from
rocky
mountain
national
park
on
50
year,
life
cycle
investment
in
different
trail
features
and
what
that
plays
out
over
time.
So
if
we
do
basic
rolling
contour
trail
would
have
been
describing
a
sustainable
trail.
You
know
what
rocky
mountain
national
parks
does
is
that's
one
thousand
three
hundred
and
fifty
dollars
per
linear,
50,
linear
feet
of
trail
and
fifty
years
later,
it's
still
one
thousand
three
hundred
fifty
dollars,
because
you
really
don't
have
to
do
much.
Did
you
build
it?
It's
really
nothing!
A
You
have
to
do
in
terms
of
maintenance,
it's
good
to
go.
We
got
steeper
trails
and
we
have
to
look
at
what
rocky
calls
rocky
Tanner
bars
or
log
retainer
bars,
or
we
call
check
steps,
staircases
and
steps
to
hold
that
trail
in
place,
and
those
have
a
higher
construction
cost
is
about
five
times
more
than
rolling
contour
trail.
It
involves
moving
rock
setting
rock
a
lot
of
intensive
work
and
the
50
year
life
cycle
Kashi
that
gets
even
bigger.
That's
where
you
know.
A
If
we're
using
like
native
log,
we're
looking
at
over
20
times
the
initial
construction
costs,
rural
and
contour
trail
because
of
blogs
rot
and
after
we
play
some
over
times
that
maintenance
long-term
perspective
is
very
that's
very
expensive,
so
I
tells
us
our
little
trail.
Design
professor
here
says:
use
lots
of
sustainable
rolling,
contour
trail
and
be
judicious
about
use
of
other
steep
trails,
use
it
only
when
necessary,
so
distant
case.
Studies
from
the
flood
one
is
the
green
bear
trail.
A
So
this
is
a
trail
that
we
rerouted
we
finished
on
in
2012
and
has
about
a
six
percent
average
grade
over
the
length
of
the
trail,
located
on
pretty
moderate
cross
slopes.
Twenty
to
sixty
percent
cross
loops
and
we
put
those
great
reversals
in
it-
that's
about
it.
We
really
saw
a
little
to
no
flood
damage
in
there.
We
had
to
do
some
minor
repairs
at
one
of
the
drainage
crossings
with
that's
it
South
Willie,
Creek,
West
share.
A
Those
had
some
pretty
significant
damage
and
the
lower
right
photo
is
from
that
lower
piece
of
the
homestead
trail
right
by
the
done
house
out
of
South
Mesa
trail,
a
pretty
significant
damage
they're,
as
opposed
to
the
rerouted
portions
of
homestead
trail
that
meet
our
sustainability
criteria,
really
minimal
damage.
We
really
didn't
have
to
spend
any
time.
Repairing
those
so
just
another
way
of
looking
at
is
its
estimated
amount
of
crew
time
for
a
five
person
crew.
A
What
it
takes
to
post
Floyd
to
address
these
trails,
so
some
of
our
more
sustainable
trails,
there's
a
fire
upper
piece
of
Tory
trail
tohi
trail
that
we
rerouted
in
2012
as
well
in
the
homestead
rerouted
sections
really
didn't
have
to
spend
any
time
on
that.
After
the
fly,
they
were
good
to
go.
Greendale
had
spent
about
a
week
with
a
crew.
Repairing
one
of
the
drainage
crossings
Alliance
later
on
the
west
side
amounts
need
us
a
little
bit
of
time,
fixing
some
of
the
trail
that
we
built
across
drainages.
A
But
you
know
about
a
crew
week
of
time,
some
of
our
unsustainable
trails
that
we
worked
on
your
last
year.
Coming
up
this
year,
the
the
rest
of
toady
trail,
the
lower
portion
below
the
2012
rear
out
or
budgeting
about
23
weeks
for
repair
and
rerouted
a
homestead
trail,
the
section
down
by
the
done
house
we're
about
doing
about
for
two
weeks
to
address
that
situation.
Saddle
rock
we
put
about
six
two
weeks
into
it
last
year
in
bear
Canyon
or
budgeting
about
20
for
two
weeks
this
year.
B
Question
about
that
so,
just
to
put
into
perspective,
say
the
upper
Toby
that
didn't
require
any
work.
Now
you
did
work
rerouting
it
before.
Did
you
do
less
rerouting
work
per
square
foot
then?
If
it
had
not
been
we're
done
and
then
would
have
flooded
out
in
a
sense,
does
the
flooding
make
it
far
worse
to
have
to
do
rerouting,
or
is
it
just
six
one-half
dozen,
the
other?
It's.
A
In
terms
of
this
applied
make
the
rear
out
the
portion
that
has
to
be
we're
at
does
that
make
that
more
work.
It
makes
it
more
work
in
terms
of
the
restoration
of
the
old
trail
and
trying
to
recon
tour
that
trail
and
get
that
back
to
a
natural
condition.
Okay,
though,
in
terms
of
you
know,
building
a
rewrap
and
whether
or
not
had
we
rerouted
the
entire
thing
three
years
ago
versus
the
part
that
we're
rerouting
this.
B
A
A
Where
does
this
information
come
from
so
I
staff
pretty
experienced
we
and
we
try
to
stay
really
up
to
date
on
current
standards
and
new
things
that
come
up
in
trail,
design
and
construction.
We
attend
annual
conferences
through
American
trails
and
professional
trail
builders
association,
which
is
really
the
two
major
entities
in
the
country
for
for
professional
trail
builders,
so
different
workshops
with
them
and
folks
go
to
those
and
bring
back
new
tricks
and
techniques
for
us
to
utilize.
Them
were
actively
using
those.
A
A
There's
an
opportunity
there
for
us
to
share
knowledge-
and
you
know
as
well
as
you
know,
getting
together
with
folks
from
trail
staff
from
Boulder,
County,
Open,
Space
or
Jefferson
County,
Open,
Space
opportunities
to
share
knowledge
and
ideas
as
well,
and
also
just
a
lot
of
on-the-ground
experience.
We've
got
a
couple
of
our
trail
staff.
A
We've
been
at
OSP
over
20
years,
we've
got
two
of
my
other
staff
have
been
here
for
about
seven
years
now
and
we
have
two
incoming
staff
starting
Monday,
which
them
brings
about
ten
years
of
experience
from
Park
Service
for
service
and
other
land
agencies
and
nonprofits.
So
a
lot
of
wild
experience
there
and
a
lot
of
continued
growth
and
knowledge,
and
one
of
the
things
that
we're
actively
working
on
this
year
is
developing
the
standards
and
specifications
manual
and
documenting
those
specs
and
standards
that
we
utilize
in
trail
design
and
construction.
A
So
that's
something
we'll
look
forward
to
having
completed
later
in
the
year
so
just
to
synthesize
and
fake
home.
Lessons
from
this
is
that
fair
design
is
a
thoughtful
and
multidisciplinary
process.
That's
carried
out
by
by
trails
professionals,
sustainable
travel
trails
really
weathered
the
flood
far
better
than
an
hour.
Steep
trails.
Good
modder
grades
typically
are
more
sustainable.
Sustainable
trails,
as
evidenced
by
a
data
at
Rocky,
Mountain
National
Park,
can
be
more
cost
effective
over
time
on
a
pretty
significant
scale,
and
then
we
also
recognize
that
some
Terry
need
to
exceed
sustainable
criteria.
A
I'm
need
to
be
steep
due
to
like
I
said
your
earlier:
either
decided
user
experiences
or
resource
protection.
There
are
other
considerations
and
before
you
know,
we
always
do
that.
We
do
it
every
year
and
we
do
it
quite
a
bit,
but
it's
something
that
we
try
to
do
very
judiciously
happy
to
answer
any
questions.