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From YouTube: City of Boulder OSBT 11-18-20
Description
City of Boulder OSBT 11-18-20
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Curt
brown,
osbt:
right
after
the
approval
of
the
minutes.,
there
will
be
a
period
of
public
comment
for
any
topic
that
is
not
already
the
subject
of
a
public
hearing..
So
that
means
anything
except
for
the
topic
of
our
first
public
hearing,,
which
is
the
approval
of
the
changes
to
the
comp
plan.
Map.
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Alison
ecklund,
cob:,
like
the
says,
tom's
ipad.,
you
can
change
it
to
your
full
name,
or
you
can
chat
to
me
and
I
can
change
it
for
you.
and
if
you
joined
by
phone,,
you
can
text
me
seven
to
05768593
your
full
name
and
I'll
change
it
for
you,
so
that
we
can
unmute
you
when
it's
your
time
and
I
have
one
more
slide.
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Cob,
dan
burke:
formal
presentation
for
you
on
this
site,
and
we
hope
that
the
memo
was
destructive
enough,.
But
we
have
several
folks
here
that
are
able
to
answer
questions.
but
with
that,
to
explain
who
is
here.
I'll
turn
it
over
to
julia,.
But
now
I'm
our
planner
open
space
and
mountain
park.,
so,
julia.
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Jean
gatza,
cob
p&ds
(she/her):-
I
think
it
was
an
august
staff-
is
proposing
several
changes
to
the
boulder
rally
comprehensive
plan
service
area
map..
So
it's
commonly
referred
to
as
the
area
123
map
that
reflect
the
changes
in
the
location
of
the
blue
line
that
was
approved
by
the
voters
in
2016.
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Cob,,
juliet
bonnell:
would
be
my
guest
today.,
jean
gatza,
cob
p&ds
(she/her):,
there's
little
slivers.
If
you
saw
the
maps
in
the
in
the
attached
memo.
there's
some
little,
little
pieces
here
and
there
and
a
couple
of
full
parcels.
but
yeah,.
I
would
say,
we're
probably
not
to
do..
Doesn't
it
much.
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Jean
gatza,
cob
p&ds
(she/her):
now,,
not
the
planning
reserve.
The
planning
reserve
is
a
special,
is
a
more
specific
location..
That's
just
north
of
town..
This
is
area
three
rural
preservation
area
and
almost,
I
would
say,
a
significant
majority
of
any
open
space
lands
are
area.
Three
real
preservation.
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Bethany
collins,,
cob:,
endeavor
and
mission
will
be
someday
when
we're,
we're
all
long
past,
probably
to
fence
the
entire
open
system
boundary
to
establish
our
boundaries,,
but
where
it's
necessary
for
property
delineation
for
agricultural
use,
things
like
that.
if
they
aren't,
located
on
the
property
line.
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Brandon
coleman,
cob:,
and
this
is
running
through
out
the
flood,
duration,
and
I'll,
see
at
the
bottom
of
the
screen.
there's
a
date.
That's
just
our
model
date
that
this
has
been
set
up,
for.
and
there's
also
a
time
step.
That's
moving
along,
and
those
times.
Steps
represent
five
minute
increments..
So.
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Brandon
coleman,
cob:
can
understand
things
very
differently
as
an
engineer..
This
is
how
I
like
to
see
things,
because
I
understand
graphs
and
charts
and
all
that
but
visually..
This
is
representing
what
we
just
saw
in
the
model
runs..
So
this
is
that
us
36
bridge.,
so
the
peak
flow,,
as
I
mentioned,
about
275
minutes.
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Brandon
coleman,
cob:
by
south
boulder
rec
center
vili
lake,
that's
the
drainage
area
that
servicing
vili
channel
so
you'll,
see
vili
channel
turns
blue,
very
quick
and
that's
because
of
the
impervious
air
area
and
the
small
watershed.
That's
reporting
to
it.
so,.
It
turns
blue,
very
quick
within
the
mall.
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Brandon
coleman,
cob:
yes,,
that's
correct.
and
there
the
way
that
channel
works..
It's
not
one
defined
point,
there's
multiple
points.,
so
the
first
place
it
spills..
Is
it
about
that
800
cfs.,
but
as
the
flows
increase
its
bills
and
multiple
points
upstream
of
there
as
well.,
but
all
kind
of
in
that
general
vicinity.
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brandon
coleman,
cob:,
at
least
in
my
world,
and
the
floodplain
mapping
world..
There
was
very
little
floodplain
science,,
similar
to
what
we
have
today..
So
these
models
that
I'm
showing
you
now
nothing
like
that.
Existed..
Just
in
the
last
10
years,
we've
been
able
to
do
two
dimensional
hydraulic
modeling.
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Brandon
coleman,
cob:,
so
I
guess
more
to
the
question
of
what
happens:
downstream..
So
really
what
we
just
talked
about.
Was,
you
know,.
We
see
a
significant
reduction
in
the
peak
flows
that
go
under
the
us
36,
but
ultimately,.
This
doesn't
eliminate
that
overtopping
of
us
36
and
then
the
flooding
of
the
west
valley.
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Joe
taddeucci
cob:,
we
absolutely
can
make
an
upstream
concept,
storage
concept
work,,
but
I
think
with
the
modeling
that
brandon
just
showed
that
the
caveat
to
that
is,,
but
not
without
structures
on
open
space..
And
so
I
think,
that's
where
brandon's
got
a
few
slides
and
where
he
was
going
to
go.
Next.
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Brandon
coleman,
cob:.
I
think
what
we
heard
from
the
advisory
group
was
we
would,.
We
would
like
to
know
what
that
looks
like.,
and
we
want
to
be
able
to
compare
that
similar
to
the
motion
from
sep.
Tember
of
2019
was
really
develop
a
side
by
side
comparison
to
the
variant
one
hundred
year
option
so.
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Brandon
coleman,
cob:
variant,
one
100,
so
I
think,
really,.
We
want
to
compare
that
configuration
that
we
just
put
together
to
the
variant
one
100
and
really
for
the
open
space
board.
We
want
to
compare
it
in
terms
of
impacts
to
open
space
resources.,
so
I
think
don's
going
to
talk
about
that.
A
little
bit,,
but.
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Brandon
coleman,
cob:,
so
we
did
develop
a
project
team
concept,
that's
the
concept
we
developed
and
kind
of
evaluated,
and
that's
where
we,
where
we
kind
of
ended
the
advisory
group
and
our
work,
and
we
presented
that
I'm
just
going
to
make
sure.
yeah.
and
then
I
am
going
to
turn
it
over
to
don
to
talk
about.
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Don
d'amico,
cob:
you'll
see
high
quality
weapons
of
difficult,
repeat,
floodplain
that
are
among
the
desk
reserved
and
most
ecologically
significant
in
the
boulder
valley..
They
include
record
for
us
made
up
largely
of
planes.
Cottonwood
trees
also
will
have
struggling
freshwater
marshes
and
wet
meadows.
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Don
d'amico,
cob:
it's
one
of
the
highest
density
of
my
found
anywhere
within
their
range.
and
as
a
result,.
The
us
fish
and
wildlife
service
designated
critical
habitat
along
south
boulder
creek,
as
occurring
140
meters
about
450
feet
out
from
the
center
line
of
the
creek
on
either
side
of
the
channel.
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Don
d'amico,,
cob:
and
populations
of
the
orchid,
an
open
space
land
are
among
the
largest
and
most
important
to
the
conservation
of
the
species
throughout
a
strange,.
The
largest
population
on
open
state
is
found
just
south
yesterday,
six,
where
this
mosaic
of
kind
of
music,
blues,
temporary
and
weapons
occurs.
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Don
d'amico,
cob:
clubs
distribute
and
redistribute
sediment
nutrient
all
kinds
of
stuff
organisms
all
over
the
floodplain,
depending
on
flooding.
What
events
and
disturbance
events-
and
these
contributes
to
the
complexity
of
habitat
that
are
found
in
in
riparian
areas
like
this
record
and
floodplain.
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Don
d'amico,
cob:,
the
don
d'amico,
cob:
dam
spillway
component
of
the
upstream
concepts,
would
would
really
negate
the
benefits
because
it
would
would
require
more
or
less
the
same
type
of
structure
in
the
same
location
as
the
existing
see
levy,.
So
it
was
negates
the
benefits
of
removing
that
levy
and
would
reduce.
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Don
d'amico,
cob:
and
then
finally,
us,
ladies
dresses
are
big
market
habitat
would
be
impacted.,
similarly,
two
and
a
half
acres
of
impacts
from
variant.
One
verses,
7.1
acres
from
the
upstream
concept.
however,
you'll,
see
that
the
impacts
orkut
habitat
on
austin
peay
would
be
greater
with
the
variant.
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Joe
taddeucci
cob:,
if
the
board
has
clarifying
questions
or
dan,
I
don't
know
if
you
had
anything
to
add
to
that,.
But
I
think
that
concludes
what
we
intended
to
present
really
appreciate.
The
men
have
again.
karen
and
kurt
and
the
other
board
members
and
the
council
members
on
the
advisory
board
and.
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Curt
brown,
osbt:
presentations
and
joe
taddeucci
cob:,
there's
just
so
much
to
to
understand
and
also
would
like
to
express
appreciation
to
dan
and
the
open
space
team
and
and
and
brandon
and
others
for
all
the
work
that
went
into
this.
so
with
that,
I'll
turn
it
over
to
dan
or
or
to
the
board..
If
you
have
questions.
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Brandon
coleman,
cob:,
so
we
have
found
when
we
were
doing
the
variant.
One
analysis
and
trying
to
maintain
the
flow
under
the
us
36
bridge
vili
channel
does
have
a
limited
capacity
before
it
starts,.
We
start
flooding,
vili
channel
and
then
really
channel
floods,
the
homes
downstream
of
really
channel.
So.
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Brandon
coleman,
cob:
the
fact
that
the
bridge
does
have
additional
capacity
storage
of
that..
So
that's
where
the
levy
comes
into
play.,
so
rather
than
creating
tunnels
or
anything
like
that.,
we
found
the
levy
to
potentially
be
the
most
efficient
way
to
do
that..
So
we
haven't
considered
convenience
for
us
36.
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Curt
brown,
osbt:,
I
think,
karen's
asking,.
Could
you
replace
the
little
levy,
the
red
levy
that
goes
up
to
36
instead
by
putting
large
culverts
right
where
the
levee
meets
us
36,
basically
just
to
catch
the
the
flow
that's
moving
west
out
of
the
cell
phone
channel.?
Is
that
what
you're
asking.
current.
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Curt
brown,
osbt:
and
that
curt
brown,
osbt:
and
that
way,
dan,
you
can
drop
these
percentages,,
which
I
think
are
really
confusing
because
their
percentages
of
different
numbers..
You
can't
really
compare
them.,
so
you
can
just
show
the
quantities
and
not
have
to
show
any
percentages..
I
think
that'll
help.
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Curt
brown,
osbt:
thank
you,,
caroline.,
curt
brown,
osbt:.
If
there
are
no
other
global
suggestions
for
improving
the
clarity
of
the
report,,
I
think
we
can
go
through
the
memo
page
by
page..
What
I
would
say
is
if
you're
recommending
something
that's
basically
editorial
that
maybe
clarifies
the
sentence,,
but
it's
not.
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Curt
brown,
osbt:
page
two.,
curt,
brown,
osbt:
and
what
I
would
like
to
do
actually
is
come
back
to
the
discussion.
Questions
they're
listed
again
towards
the
end.,
so
we'll
run
into
them,,
but
I
think
it's
good
to
get
through
the
other
stuff
before
we
reflect
on.
Do
we
think
these
questions
are
clear.
G
E
G
G
A
E
A
E
A
E
E
L
D
D
D
D
R
A
G
G
G
E
A
G
G
G
G
P
Caroline
miller,,
osbt:
and
then,
can
anyone
caroline
miller,
osbt:,
add
to
what
I'm
about
to
say
or
what
they
think..
So
when
you
go
to
page
six,,
it
says,
as
shown
in
table
one.,
the
project
has
similar
direct
environmental
impacts,,
but
then
over
here,
it
talks
about
total
impacts
and
then
down
the
line..
We
talk
about
indirect
environmental
impacts,
so.
U
U
A
T
U
U
U
U
U
P
U
U
V
V
A
A
A
V
V
T
T
U
A
L
D
D
G
G
V
V
G
E
V
E
V
V
V
V
V
V
V
A
Curt
brown,
osbt:
we're
saying
it's
a
negative
aspect
of
the
upstream
project
that
it
eliminates
the
location
for
mitigation.
a
variant
one.
but
of
course,.
If
you're
building
the
upstream
project,,
you
don't
have
variant
one.,
so
just
just
sort
of
check
that
you're
not
getting
into
sort
of
a
circular.
E
E
E
D
E
V
V
V
V
D
E
A
D
E
U
U
U
P
U
U
D
D
P
U
U
Brandon
coleman,
cob:,
so
that's
structures
and
properties
and
in
the
flood
way
flood
zone
right
now..
So
if
we
do
do
that,,
I'm
happy
to
do
that
for
this
one,
it
will
be
similar,
it'll,
be
the
same
flood
structures
and
people.
That's
helped
with
the
variant
one
100.
So
that's
how
we've
designed
this.
U
U
E
R
D
S
A
A
S
E
E
S
P
P
U
U
U
P
U
U
A
E
Karen
hollweg,
osbt:
um,,
I
went
back,,
I
agree
with
you,
kurt..
I
went
back
and
I
reread
the
see
you
guiding
principles
and
what
I
concluded
after
reading.
The
guiding
principles,
was
that
project
related
use
of
the
oh,
so
area
would
require
agreements
described
in
number.
Six
and
seven
of
the
guiding
principles.
E
A
E
A
A
A
E
U
Brandon
coleman,
cob:
correct.,
it's
a,,
it's
a
floating.
I
would
consider
it
a
floating
abutment.,
so
it
is,
it
has
flow
going
both
ways.
Over
top
of
it
has
a
roadable
soil
surrounding
it..
It's
highly
unusual
for
the
seo.,
so
there's
probably
going
to
be
a
few
questions
and
technical
analysis..
We
don't
think
it's.
E
T
U
T
T
S
S
S
S
S
E
A
A
E
A
A
A
A
A
A
A
E
E
E
E
P
A
E
F
A
U
U
U
U
U
U
U
U
A
A
U
U
U
P
A
A
A
A
L
L
L
R
S
A
A
L
L
L
L
L
L
L
L
A
A
L
L
A
L
L
D
L
L
Z
Z
Z
Z
A
A
A
L
L
L
E
L
L
E
A
A
A
A
L
L
L
L
L
L
D
D
D
D
O
A
E
A
E
A
E
R
D
A
A
E
L
A
A
F
A
A
L
A
A
D
L
L
L
D
Dave
kuntz,
osbt:,
yesterday,
dave,
kuntz,
osbt:.
I
think
all
of
you
probably
know
that
I
asked
the
staff.
some
questions
on
the
use
of
the
concept
of
range
of
variation
in
assessing
the
status
of
trails,
and
I
just
wanted
to
thank
staff
for
their
response
and
especially
adam
gaylord,
who
sent
a
response
to
us.
This
afternoon.