This document provides an erosion and sediment control plan for Brizzolara Creek on the Cal Poly campus. It introduces the project goals of stabilizing an eroding outer bank, centralizing stream flow, removing scrap metal, and improving overall channel quality. Regulatory requirements that must be met include obtaining permits from the California Department of Fish and Wildlife, US Army Corps of Engineers, and Regional Water Quality Control Board. A site assessment is then presented, including aerial and detailed site maps as well as descriptions of the site soils, vegetation, water sources, measurements, and existing erosion problems. Best management practices to be used including J-hooks, riprap, erosion control netting, and bioretention planters. Maintenance and

1.
Erosion
and
Sediment
Control
Plan
Brizzolara
Creek
MNMS
Erosion
Consultants
1
Grand
Avenue
San
Luis
Obispo,
CA
93410
Mary
Hillis
mehillis@calpoly.edu
Nico
Navarro
nrnavarr@calpoly.edu
Mackenzie
Taggart
mtaggart@calpoly.edu
Sarah
Treadwell
streadwe@calpoly.edu

2. Table
of
Contents
1. Introduction
1. Introduction
to
Brizzolara
Creek
Erosion
&
Sediment
Control
Plan
2. Goals
and
Objectives
3. Regulatory
Requirements
of
the
Proposed
Project
2. Site
Assessment
1. Aerial
Map
of
Brizzolara
Creek
Site
2. Produced
Map
of
Brizzolara
Creek
Site
Depicting
Project
Plans
3. Site
Description
1. Soils,
Vegetation,
Landscape
2. Sources
of
water
and
sediment
3. Site
Measurements
4. Evaluation
of
erosion
3. Erosion
and
Sediment
Control:
Best
Management
Practices
1. J-­‐Hook
2. Riprap
3. Erosion
Control
Netting
4. Bioretention
Planters
4. Maintenance
and
Inspection
Procedures
For
Project
1. Schedule
of
procedures
and
planned
inspections
2. Description
of
Maintenance:
J-­‐Hook
3. Description
of
Maintenance:
Riprap
4. Description
of
Maintenance:
Erosion
Control
Netting
5. Description
of
Maintenance:
Bioretention
Planters
5. Certifications
and
Notifications
6. Conclusion
7. References

3. 1.
Introduction
1.1
Introduction
To
Brizzolara
Creek
The
purpose
of
this
project
is
to
mitigate
channel
erosion
at
the
stream
meander
north
of
Engineering
IV
building
on
the
California
Polytechnic
State
University
San
Luis
Obispo,
CA.
The
outer
bank
of
the
stream
meander
has
been
laterally
eroded,
leaving
unstable
slopes
that
threaten
the
adjacent
faculty
parking
lot
and
the
overall
channel
health.
In
addition
to
the
lateral
erosion,
additional
problems
exist
that
are
a
detriment
to
the
channel
health.
The
main
channel
problems
include:
• Lateral
erosion
of
outer
bank
• Sedimentation
• Destruction
of
aquatic
habitat
and
terrestrial
vegetation
• Metal
scrap
waste
embedded
in
outer
bank
1.2 Goals
&
Objectives
This
project
will
focus
on:
• Stabilize
the
eroding
outer
bank
• Centralize
stream
flow
• Remove
scrap
metal
along
stream
bed
and
outer
bank
• Improve
overall
quality
of
channel
1.3 Regulatory
Requirements
of
Proposed
Project
There
are
three
main
agencies
that
have
jurisdiction
over
amendments
made
in
Brizzolara
Creek.
These
agencies
and
their
jurisdiction
are
explained
below.
California
Department
of
Fish
and
Wildlife
(CDFW):
It
is
necessary
to
notify
the
(CDFW
before
undergoing
streambed
alteration.
Under
the
Fish
and
Game
Code
1602,
it
is
necessary
to
notify
the
CDFW
if
any
alterations
are
made
to
a
stream.
After
notifying
the
CDFW,
a
Streambed
Alteration
Agreement
must
be
made
to
permit
activity.
The
agreement
process
in
with
the
CDFW
must
comply
with
the
California
Environmental
Quality
Act
(CEQA).
The
lead
agency
(local
or
state
agency
with
approving
authority),
which
can
be
the
CDFW,
must
make
sure
the
alteration
complies
with
the
CEQA.
Aside
from
contacting
the
CDFW
it
is
also
important
to
determine
of
local
permits
are
necessary
and
if
the
project
is
under
the
jurisdiction
of
federal
and
state
agencies
(CDFW,
2014).
US
Army
Corps
of
Engineers
(USACE):
In
the
case
of
of
stream
alteration
the
movement
of
materials
within
the
streambed
requires
a
USACE
404
Nationwide
Permit
(VCPD,
2006).
This
permit
falls
under
section
404
of
the
Clean
Water
Act
(CWA),
which
regulates
discharge
of
dredged
or
fill
material
into
the
water
of
the
US
(EPA,
2014).
Regional
Water
Quality
Control
Board
(RWQCB)
:
A
401
Certification
from
the
RWQCB
is
necessary
when
obtaining
a
USACE
404
Permit.
This
permit
falls
under
section
401
of
the
CWA
which
declares
that
each
state
must
certify
that
the
federally
permitted
activities
(in
this
case
issued
from
the
USACE)
are
in
compliance
with
all
state
water
quality
standards
(VCPD,
2006).

4.
2.
Site
Assessment
2.1 Aerial
Map
of
Brizzolara
Creek
Site
Brizzolara
Creek
Project
Site

5. 2.2 Produced
Map
of
Brizzolara
Creek
Site

6.
2.3 Site
Description
The
Brizzolara
creek
site
is
located
northeast
of
the
California
Blvd
and
Highland
Dr
intersection
on
the
Cal
Poly
campus.
The
vegetation
includes
mainly
willows
and
eucalyptus
trees
with
some
herbaceous
vegetation
sprouting
along
the
streambed
and
higher
up
on
the
banks.
The
streambed
along
the
northern
segment
of
the
site
is
exposed
bedrock,
while
the
southern
section
consists
of
mainly
cobbles
three
to
five
inches
in
width.
The
creek
is
currently
dry,
however
runoff
from
previous
events
has
caused
significant
erosion
on
the
outer
edge
of
the
stream
meander,
along
the
northern
bank.
This
past
erosion
is
evident
through
the
steep
and
mostly
unvegetated
northern
slope
adjacent
to
Highland
Dr.
In
addition,
there
is
a
high
percentage
debris
embedded
in
the
northern
bank
of
the
stream
channel.
The
southern
bank,
which
represents
the
inside
of
the
meander,
displays
a
significantly
lower
relief
than
the
northern
slope
and
is
highly
vegetated.
2.3.1
Description
of
Soils
and
Vegetation
The
soils
at
the
Brizzolara
Creek
site
are
classified
as
silty
clay
loam,
and
are
part
of
the
Salinas
soil
series.
These
soils
formed
from
alluvial
parent
material
deposits
from
weathered
sedimentary
rock.
The
soil
is
well
drained
thanks
to
its
composition
and
is
part
of
hydrologic
soil
group
C.
The
K-­‐factor
for
this
soil
is
.32;
this
is
a
relatively
high
soil
erodibility
factor
and
is
due
to
the
high
content
of
silt,
which
is
easily
eroded.
The
average
annual
temperature
in
this
area
is
68-­‐70
degrees
Farenheit
and
the
average
annual
precipitation
is
around
23.45
inches
2.3.2
Sources
of
Water
and
Sediment
There
are
three
main
culverts
that
drain
into
Brizzolara
Creek
site
within
the
designated
project
area.
These
culverts
supply
water
runoff
and
sediment
from:
an
unpaved
road
running
alongside
the
creek
upland
from
the
southern
bank,
roof
drainage
from
engineering
building
192,
and
the
parking
lot
adjacent
to
the
creek.
These
culverts
funnel
sediment
and
debris
from
the
three
sources
straight
into
the
creek,
and
pose
a
problem
for
the
sensitive
habitats
of
Stenner
and
other
San
Luis
Obispo
creeks
downstream
of
Brizzolara.
Runoff
and
discharge
from
the
Horse
Canyon
Watershed
also
contribute
to
the
water
and
sediment
levels
of
Brizzoalra
Creek.
2.3.3
Measurements
of
Site
The
designated
watershed
area
contributing
runoff
and
erosion
at
the
Brizzolara
Creek
site
is
approximately
3.2
square
miles.
The
measured
streambed
length
at
the
project
site
is
49
feet.
The
average
width
of
the
streambed
is
10.5
feet,
and
the
average
depth
of
the
channel
is
6.5
feet,
yielding
a
cross
sectional
area
of
68.3
square
feet.
2.3.4
Evaluation
of
Erosion
and
Sediment
Delivery
Field
measurements
of
features
were
taken
at
the
project
site
and
used
to
calculate
BEHI
and
Shear
Stress
ratings.
The
bank
erosion
rate
for
current
and
future
conditions
was
then
calculated
based
on
these
ratings:
Current
Condition:
Brizzolara
Creek
is
currently
eroding
on
the
northern
slope
of
the
channel.
This
slope
exhibits
a
steep
grade,
a
low
percentage
of
surface
protection,
and
a
shallow
rooting
depth
for
vegetation.
Based
on
these
observations
and
an
assessment
of
bank
materials,
the
initial
BEHI
calculation
resulted
in
an
“extreme”
rating
for
the
hazard
of
bank
erosion.
Similarly,

7. the
initial
rating
for
Shear
Stress
also
resulted
in
an
“extreme”
rating.
Based
on
both
the
initial
ratings,
the
determined
bank
erosion
rate
is
2.8
ft/yr.
Future
Condition
Without
BMP’s:
When
calculating
the
predicted
future
BEHI
and
Shear
Stress
ratings
for
the
area
of
interest,
it
was
determined
that
most
of
the
channel
conditions
would
remain
constant.
The
foreseeable
changes
are
a
higher
relief
on
the
northern
slope
as
it
continues
to
be
affected
by
lateral
scour
and
a
smaller
a
decrease
in
surface
cover.
Based
on
these
conclusions,
the
BEHI
and
Shear
Stress
ratings
the
are
also
rated
“extreme”.
The
continually
degrading
conditions
result
in
a
slightly
higher
bank
erosion
rate
of
2.9
ft/yr.
Future
Condition
With
BMP’s:
The
proper
installation
of
Best
Management
Practices
(BMP)
will
help
to
improve
channel
conditions
and
consequently
decrease
the
bank
erosion
rate.
The
BMP’s
utilized
will
reduce
the
slope
of
the
banks,
increase
surface
protection,
and
reduce
the
near
bank
maximum
depth.
These
improvements
will
reduce
both
the
bank
erosion
hazard
and
shear
stress
ratings
to
low,
resulting
in
a
bank
erosion
of
.04
ft/yr.
3. Erosion
and
Sediment
Control:
Best
Management
Practices
3.1
Overview
of
BMP’s
and
Implementation
at
Project
Site
Numerous
Best
Management
Practices
(BMPs)
will
be
used
to
divert
stream
flow,
decrease
stream
bank
erosion,
create
habitat
for
wildlife,
and
beautify
the
Brizzolara
Creek
site.
A
J-­‐hook
will
be
secured
slightly
upstream
from
the
highly
erosive
north
bank
of
the
Brizzolara
Creek
bank,
diverting
flow
away
from
the
outer
portion
of
the
stream
meander.
The
large,
inactive,
concrete
culvert
feeding
into
the
creek
will
be
taken
out
and
replaced
with
logs
and
riprap
on
the
creek
bed
to
protect
the
bank.
The
use
of
riprap
along
the
northern
bank
will
prevent
further
downward
erosion
of
the
streambed
in
this
area,
and
will
stabilize
the
slope,
preventing
scour
of
bank
materials
and
loss
of
sediment.
Excavating
the
highly
eroded
stream
bank
will
be
the
first
of
many
BMPs
applied
to
the
unstable,
highly
eroded
stream
bank.
Cutting
the
near
vertical
slope
back
to
a
grade
of
1:1,
45-­‐degree
angle
will
decrease
the
chance
of
mass
wasting
and
sediment
erosion.
While
excavation
equipment
is
in
the
creek,
the
rusting
iron
debris
will
be
removed.
Following
grade
control
on
the
north
bank,
a
series
of
BMPs
will
be
implemented
in
order
to
insure
its
stability
and
is
conducive
to
wildlife
Initially,
a
layer
of
compost
two
inches
thick
will
be
raked
evenly
on
the
stream
bank.
Seed
will
be
incorporated
into
this
thick,
woody
mixture
to
cut
cost
and
simplify
the
application
process.
Compost
was
chosen
because
it
improves
soil
quality,
protects
the
ground
from
splash
erosion,
and
provides
plants
with
nutrients
overtime
(Caltrans,
2014).
The
seed
mix
will
contain
native
grasses,
forbs,
and
legumes
(Caltrans,
2010).
Succeeding
the
compost,
a
layer
of
Coconut
Netting
will
blanket
the
stream
bank,
secured
with
pins.
This
rolled
erosion
control
product
is
available
in
several
strengths;
Type
B
will
be
sufficient
considering
the
weight
of
mat
and
the
amount
of
space
left
open
in
the
weave.
A
coconut
fiber
mat
was
chosen
for
its
ability
to
withstand
a
1:1
embankment,
degradable
material,
retention
of
soil
moisture
for
germination
of
seeds,
and
safeguard
soil
from
erosion
(Caltrans,
2014).
Willow
Cuttings
will
then
be
planted
systematically

8. along
the
bank
through
the
open
spaces
in
the
netting.
Willows,
native
to
the
area,
thrive
in
stream
communities
providing
long-­‐term
strength
of
not
only
the
riverbank,
through
extensive
root
systems,
but
also
in
offering
animal
habitat
(WVDEP,
2014).
Plantings
of
a
variety
of
other
native
shrubs
and
grasses
within
the
willows
and
coconut
mat
structure
will
finalize
the
efforts
taken
to
assure
the
once
eroded
Brizzolara
stream
bank
is
stable
for
years
to
come.
On
the
top
of
the
bank,
bioretention
planters
will
be
utilized
to
divert,
hold,
filter,
and
infiltrate
stormwater
running
off
of
impermeable
surfaces
such
as
the
adjacent
parking
lot
all
while
creating
an
aesthetically
pleasing
environment.
3.2
J-­‐Hook
A
j-­‐hook
is
a
structure
used
to
redirect
stream
flow
for
urban
stream
repair
purposes.
The
j-­‐hook
is
an
upstream
directed,
gently
sloping
structure
consisting
of
natural
materials
including
but
not
limited
to
boulders,
logs,
and
root
wads
or
a
combination
of
materials.
The
structure
is
placed
at
a
20
to
30
degree
angle
on
the
outer
bend
of
the
stream
meander
where
the
highest
stream
velocity
occurs
(Rosgen,
2014).
There
are
two
sections
of
the
j-­‐hook,
the
vane
and
the
hook.
The
vane
consists
of
the
straight
section
that
covers
approximately
⅓
of
the
banfkfull
width.
No
gaps
exist
in
the
structure
on
the
vane
section.
The
hook
section
consists
of
the
curved
section
of
the
structure.
Small
gaps
exist
in
the
hook
section.
The
j-­‐hook
helps
to
reduce
bank
erosion
along
the
stream
bank
toe
by
centralizing
flow.
Centralizing
flow
helps
to
mitigate
stream
bank
erosion
by
reducing
near-­‐bank
slope,
velocity,
and
shear
stress.
The
j-­‐hook
is
effective
to
three
times
its
length.
As
the
water
travels
downstream,
the
j-­‐hook
forces
the
flow
towards
the
center
and
allows
the
shear
stress
to
be
concentrated
in
the
center
of
the
channel.
The
vane
helps
creates
a
scour
pool
downstream.
The
hook
section
works
in
conjunction
with
the
vane
section
by
creating
a
longer,
deeper,
wider
pool.
The
gaps
within
the
hook
section
create
a
vortex
flow
pattern
that
further
helps
to
centralize
flow
and
increase
transport
of
sediment
and
debris
(Schueler
and
Brown,
2014).
The
increased
depth
helps
the
stream
accommodate
larger
floods,
increases
cross-­‐sectional
area,
and
ultimately
helps
reduces
bank
erosion.
3.3
Riprap
At
the
Brizzolara
Creek
site,
the
creek
takes
a
tight
right
before
continuing
downstream
of
the
area
of
interest.
This
turn
concentrates
the
energy
of
the
creek
directly
at
the
Northern
bank
before
it
can
continue
around
the
turn,
and
results
in
serious
erosion
and
instability
of
the
bank
and
the
streambed.
The
BMP
we
will
use
to
stabilize
the
streambed
and
lower
bank
from
further
erosion
is
riprap.
Riprap
is
the
use
of
large
stones
placed
in
a
layer
over
or
under
a
specific
area
to
prevent
soil
erosion
due
to
concentrated
runoff
(NPDES,
2014).
Riprap
can
be
effective
for
stabilization
on
slopes
as
well,
however
it
can
also
become
unstable
under
certain
conditions,
such
as
using
rounded
rocks,
or
with
slopes
steeper
than
2:1
(FHWA,
2014).
In
order
to
ensure
the
successful
implementation
of
riprap,
there
are
some
guidelines
that
must
be
followed,
these
include:
using
a
durable
stone
in
various
rock
sizes,
ensuring
your
riprap
layer
extends
deep
enough
to
two
times
the
maximum
stone
diameter,
and
placing
the
riprap
high
enough
along
banks
above
the
maximum
flow
depth
(NPDES,
2014).
At
our
site,
we
will
dig
out
an
area
about
eight
feet
in
length
and
five
in
depth
along
the
base
of
the
Northern
bank
where
the
creek
follows
the
turn;
we
will
then
fill
the

9. area
with
a
layer
or
rip
rap
and
backfill
the
area
with
the
displaced
soil.
This
underlying
layer
of
riprap
will
serve
as
a
toe
protection
along
the
base
of
the
Northern
bank,
and
will
prevent
the
further
downward
erosion
of
the
streambed
by
the
creek
and
it
follows
the
sharp
turn.
The
riprap
will
be
continued
upward
two
feet
in
height
above
the
streambed
to
provide
for
extra
stabilization
of
the
bank.
Riprap
serves
as
a
cost
effective,
durable
solution
for
stabilizing
this
small
area
of
our
project.
3.4
Erosion
Control
Netting
The
rolled
erosion
control
netting
product
is
made
of
100%
coconut
fiber
woven
into
a
checked
pattern.
It
is
produced
in
three
different
strengths;
Type
B,
as
defined
on
Caltrans,
will
be
sufficient
considering
the
weight
of
the
mat
(700
grams/sq.
meter)
and
the
50%
open
space
left
in
the
weave.
Type
B
netting
will
be
effective
up
to
a
1:1
slope
unlike
counter
products
such
as
Jute
or
even
Type
A
netting.
Coconut
netting
lasts
up
to
three
years,
giving
the
willows
and
plants
substantial
time
to
become
established.
A
limitation
to
rolled
erosion
control
options
is
their
expense.
However,
200
square
feet
maximum
would
be
the
needed,
rounding
out
the
cost
under
$190
(Caltrans,
2014)
Benefits
of
the
netting
include:
• Provides
immediate
protection
of
the
soil
while
plants
are
still
young.
The
weave
is
slightly
tighter
than
many
woven
mats,
allowing
a
greater
stability
of
the
slope
at
early,
vulnerable
stages.
• The
Natural
fibers
retain
soil
moisture,
improving
the
germination
of
seeds
and
plant
growth
(Caltrans,
2014).
This
is
a
necessity
in
the
dry
climate
of
the
Brizzolara
Creek.
• Many
erosion
control
rolled
products
are
partial
produced
with
synthetic
material.
This
netting
is
fully
biodegradable,
a
key
in
a
self
regulating,
natural
environment.
The
application
of
netting
follows
a
similar
process
to
other
rolled
erosion
products.
Begin
with
digging
an
anchor
trench
6
inches
deep
at
the
top
of
the
slope,
the
length
of
the
bank
wished
to
be
covered
(McCullough,
2014).
Place
the
first
4
inches
of
the
netting
in
the
trench
and
secure
with
metal
U
pins
2
feet
apart
and
cover
with
soil.
Roll
out
the
track
working
downhill
a
few
yards
at
a
time.
Catch
the
roll
using
wooden
stakes
so
adjustment
to
the
tautness
and
securing
of
the
netting
can
be
made
easily.
Drive
in
U
pins
every
3
feet
in
a
diagonal
pattern.
Once
the
roll
netting
has
covered
the
entire
slope,
make
an
anchor
trench
identical
to
the
anchor
head.
Staple
4
inches
of
excess
netting
into
the
trench
before
cutting
it
off
from
the
roll.
Finally,
burry
and
compact
the
trench
with
soil.
3.5
Bioretention
Planters
The
Brizzolara
Creek
Site
Project
lies
adjacent
to
an
older
staff
parking
lot
across
Highland
Drive
from
building
192:
Engineering
IV
(see
Figure
1.
location
map).
Runoff
from
the
parking
lot
into
Brizzolara
Creek
occurs
in
the
upper
east
portion
on
the
north
bank
where
asphalt
erosion
is
evident.
Following
the
erosion
control
BMPs
executed
on
the
north
bank
of
Brizzolara
Creek
it
will
be
important
to
control
runoff
coming
onto
the
bank
from
the
parking
lot
area
in
order
to
maintain
structural
integrity.
Stormwater/bioretention
planters
utilize
soil
and
plants
to
infiltrate,
slow,
and
clean
stormwater
coming
off
of
impervious
surfaces
(Central
Coast
LIDI,
2014).
Stormwater
runoff
from
the
adjacent
staff
parking
lot
will
be
diverted
into
the
bioretention
planters
where
it
will
be
temporarily
held,
filtered,
and
infiltrated
into
the

10. surrounding
substrate.
Excess
runoff
exiting
the
planters
into
the
creek
bed
will
be
slower
and
cleaner
as
a
result
(Caltrans
Erosion
Toolbox,
2014).
Some
general
parameter
of
parking
lot
Bioretention
Planters
include:
• The
recommended
depth
of
soil
in
the
planters
is
24
inches
with
an
underdrain,
although
18
inches
is
the
legal
minimum.
• Curb
height
and
gutter
width
are
also
recommended
to
be
24
inches
-­‐
providing
additional
structural
support.
• Maintain
a
6”
wide
“bench”
of
native
soil
at
the
sides
of
the
planters
to
maintain
sidewalks
stability.
• A
layer
of
filter
fabric
is
used
between
the
topsoil
layer
and
the
bottom
aggregate
layer.
This
allows
the
aggregate
layer
to
store
additional
stormwater
apart
from
water
stored
in
the
soil
layer
3.6
Evaluation
of
Future
Erosion
The
current
bank
erosion
at
the
Brizzoalra
creek
site
is
2.8
ft/yr,
with
estimated
future
erosion
to
be
slightly
higher
at
2.9
ft/yr.
Through
the
use
of
the
identified
best
management
practices,
the
future
erosion
of
Brizzolara
creek
will
be
reduced
to
.04
ft/yr.
The
bank
erosion
hazard
and
shear
stress
will
also
be
significantly
decreased
after
BMP
implementation,
with
a
new
rating
of
low
for
both.
4.
Maintenance
&
Inspection
of
BMP’s
4.1
Maintenance
&
Inspection
of
J-­‐Hook
J-­‐hooks
are
generally
a
sturdy
BMP
and
require
low
levels
of
maintenance.
Problems
such
as
sediment
or
debris
accumulation
behind
the
hook
can
occur,
which
could
cause
damage
to
the
hook
and
reduce
its
effectiveness.
For
best
results,
the
J-­‐hook
should
be
inspected
after
heavy
rainfall
and
once
monthly.
If
accumulated
material
is
present,
they
should
be
removed,
and
any
damage
caused
should
the
j-­‐hook
should
be
remedied
right
away.
4.2
Maintenance
&
Inspection
of
Riprap
In
order
to
maintain
the
integrity
of
the
riprap,
the
area
will
be
inspected
at
minimum
once
a
year
to
survey
damages
and
necessary
management.
The
riprap
will
also
be
inspected
after
large
storms
where
excess
rainfall
may
have
caused
damage
to
the
integrity
of
the
riprap.
(NPDES,
2014)
Riprap
when
implemented
according
to
the
proper
guidelines,
is
a
relatively
sturdy
BMP
and
will
not
require
minimal
maintenance.
If
the
riprap
structure
is
damaged,
it
must
be
repaired
promptly
before
the
creek
can
cause
more
damage.
If
it
becomes
clear
the
riprap
continues
to
be
damaged
in
a
particular
spot
of
in
a
particular
way,
measurements
of
our
area
of
interest
will
be
taken
and
the
design
of
the
riprap
implementation
will
be
reevaluated.
Changes
will
be
made
in
regards
to
the
new
findings
of
inspection.
At
our
site
we
plan
to
integrate
the
use
of
other
BMP’s
such
as
Willow
stakes
and
brush
mattresses
along
with
our
implementation
of
riprap.
These
other
management
practices
will
ensure
the
stabilization
of
the
upper
bank
slopes
as
well
as
protect
the
soil
surrounding
the
riprap.

11.
4.3
Maintenance
&
Inspection
of
Erosion
Control
Netting
Project
will
be
completed
around
late
summer.
This
allows
the
system
time
to
become
established
before
the
rainy
season.
In
the
weeks
following
the
development,
inspection
of
the
stream
bank
includes:
netting
is
still
secured,
seeds
are
germinating,
and
willows
and
other
vegetation
are
taking
root.
This
will
also
include
irrigation
of
the
plants
if
little
precipitation
falls,
until
they
become
more
mature.
After
heavy
rain
events
visual
checks
should
be
made
to
the
netting
to
ensure
none
has
come
loose.
After
a
few
months
of
careful
watch
and
potentially
watering,
the
vegetation
should
be
established
and
the
bank
protected
and
self
sustaining.
4.4
Maintenance
&
Inspection
of
Bioretention
Planters
Perennial
plants
and
trees
will
need
some
irrigation
during
the
dry
season
(June-­‐October
in
San
Luis
Obispo).
Average
watering
schedules
for
mature
established
plants
and
trees
is
approximately
weekly
with
1”
of
water
per
application.
Drip
irrigation
inspections
should
be
conducted
routinely
to
make
sure
that
water
is
being
used
efficiently
without
waste.
Reservoirs
receive
water
prior
to
infiltration
and
should
be
maintained
for
clogging.
Inspecting
for
debris
and
sediment
pre
and
post
wet
season
should
be
conducted
during
the
month
of
May,
and
again
in
October.
Sand,
gravel,
and
topsoil
allow
stormwater
to
percolate
uniformly
through
the
planter.
Inspections
and
maintenance
should
focus
on
any
holes
that
are
not
consistent
with
the
system
to
prevent
water
from
flowing
directly
through
the
planter.
Also,
litter
and
debris
shall
be
removed
during
inspections.
Inspections
should
be
conducted
prior
to
and
directly
after
the
wet
season
in
May
and
again
in
October.
Any
cracks
or
failure
spots
should
be
repaired
throughout
the
year
during
regular
inspections.
5.
Certifications
&
Notifications
I
certify
under
penalty
of
law
that
this
document
and
all
attachments
were
prepared
under
my
direction
or
supervision
in
accordance
with
a
system
designed
to
assure
that
qualified
personnel
properly
gathered
and
evaluated
the
information
system,
or
those
persons
directly
responsible
for
gathering
the
information,
the
information
submitted
is,
to
the
best
of
my
knowledge
and
belief,
true,
accurate,
and
complete.
I
am
aware
that
there
are
significant
penalties
for
submitting
false
information,
including
the
possibility
of
fine
imprisonment
for
knowing
violations.
___________________________________
____________________________________
Mary
Hillis
5th
June,
2014
NIco
Navarro
5th
June,
2014
___________________________________
_____________________________________
Mackenzie
Taggart
5th
June,
2014
Sarah
Treadwell
5th
June,
2014

12.
6.
Conclusion
The
main
issues
of
erosion
and
sedimentation
will
be
remedied
through
the
proper
installation
of
a
riprap,
j-­‐hook,
rolled
erosion
control,
and
bioretention
planters.
Bank
erosion
is
predicted
to
decrease
from
2.8
ft/yr
to
.04
ft/yr
with
the
installation
of
these
BMP’s.
This
alteration
will
help
to
create
a
stable
channel
and
slope;
sustainable
habitat
for
aquatic
species
and
terrestrial
vegetation;
and
add
aesthetic
value.
The
alteration
will
create
a
site
that
will
enhance
the
environment
and
moreover
the
overall
channel
health.
7.
References
Caltrans.
2010.
Key
concepts
of
sustainable
erosion
control:
technical
guide.
pp.24-­‐32.
https://polylearn.calpoly.edu/AY_20132014/pluginfile.php/439729/mod_resource/content/2/Erosion_
Control_Technical_Guide_v2.pdf.
May
29,2014.
"Clean
Water
Act,
Section
404."
EPA
Regulations.
EPA,
n.d.
Web.
06
June
2014.
<http://water.epa.gov/lawsregs/guidance/wetlands/sec404.cfm>.
"EPA
-­‐
Stormwater
Menu
of
BMPs."
NPDES,
31
July
2013.
Web.
22
May
2014.
<http://cfpub.epa.gov/npdes/stormwater/menuofbmps/index.cfm?action=browse&Rbutton=detail&b
mp=39>.
FHWA
(Federal
Highway
Administration).
1995.
Best
Management
Practices
for
Erosion
and
Sediment
Control.
FHWA-­‐SLP-­‐94-­‐005.
Federal
Highway
Administration,
Sterling,
VA
"Lake
and
Streambed
Alteration
Program."
Questions
and
Answers.
California
Department
of
Fish
and
Wildlife,
n.d.
Web.
03
June
2014.
<http://www.dfg.ca.gov/habcon/1600/qa.html>.
"Rolled
Erosion
Control
Product
(Netting)."
Erosion
Control
Netting.
Caltrans,
n.d.
Web.
06
June
2014.
<http://www.dot.ca.gov/hq/LandArch/ec/recp/ec_netting.htm>.
Rosgen,
D.L.
2014.
The
cross-­‐vane,
w-­‐weir
and
j-­‐hook
strcutures…
their
description,
design
and
application
for
stream
stabilization
and
river
restoration.
Wildland
hydrology.
Web
06
June,
2014
<
http://www.wildlandhydrology.com/assets/cross-­‐vane.pdf>
Schueler,
T.,
and
K.
Brown.
2014.
Urban
watershed
restoration
manual
no.
4:
urban
stream
repair
practices(version
1.0).
West
Virginia
Department
of
Environmental
Protection.
06
June,
2014.
<http://www.dep.wv.gov/WWE/Programs/stormwater/MS4/guidance/Documents/Manual%204%20U
rban%20Stream%20Repair%20Practices%202004.pdf>