HomeMy WebLinkAboutBLD2020-00538 - 12 Geotech WaiverTO: Linda Paralez, UDC Administrator
FROM: Amanda Hunt, Assistant Planner
DATE: 12/16/2020
RE: Parcel 990600106, 155 Baldwin Ln, Port Ludlow, WA, Geotech Waiver Request
– Approval Recommendation
Rebecca Hunt and Merrill Hunt have applied for a geotechnical report waiver during the course
of a building permit application (BLD20-00538). The Hunt’s plans are to construct a New
Single-Family Residence with an attached garage on the parcel. The Hunt’s property is mapped
as a Landslide Hazard Area- Slight Landslide Hazard Area, and as a Shoreline Slope Stability—
Intermediate Slope. I have reviewed the Hunt’s waiver request, available map and data, and
completed the attached geohazard checklist. The Hunt’s will implement applicable best
management practices during construction. Based on our available data, the Hunt’s site,
proposed development, and analysis from the geohazard checklist, I find that the standards for a
geotechnical report waiver under Jefferson County Code 18.22.910 have been satisfied.
_X_ Approved
___ Denied
______________________________________________
Linda Paralez, UDC Administrator
Attachments:
Supplemental application waiver from special reports – geotech
GIS Maps
Geohazard Checklist
Site Plan
Geohazard Checklist
(for internal DCD use only)
1. Which of the following are mapped on-site?
Land Slide Hazard: Slight___X_ Moderate ____ High ____ Recent Landslide ____ Old Slide
____
Erosion: ____
Seismic: ____
Shoreline Slope Stability: Unstable ____ Landslide ____ Modified ____ Intermediate __X__
Two or more? Yes _X___ No ____ (yes = 1 point)
2. Existing Development? Yes __ No _X__ Evidence of geohazard? Yes___ No ___ (yes/yes = 1
point)
3. Is the slope greater than 15 %? (rise/run = %) Yes ____ No _X___ (approx. 13.3 %) (yes = 1
point)
4. Will the development be less than 35 feet from the top or toe of slope? Yes _X___ No ____
(yes = 1 point)
5. Does the site have a less stable slope form? Yes ____ No _X___ (yes = 1 point)
Divergent ____ (most stable) Planar ____ (more stable) Convergent ____ (less stable)
6. Is there any information regarding stability of the soil e.g. septic soil logs, NRSC soil survey etc.
Yes ____ No__X__ ( 1 is least stable, 7 is most stable) (1, 2 or 3 = 1 point)
7. What type of vegetation on-site?
Heavily Vegetated with Native (most stable) _X___ Not well vegetated (less stable) ____
Recent Timber Harvest ____ (least stable) (least stable = 1 point)
8. Site Visit recommended on moderate or greater risk areas to look for indicators (see list) – Any
indicators? Yes ____ No __X__ (yes = 1 point for each indicator)
9. Were there any other Geotechs done on adjacent properties? Yes ____ No _X___ If yes, did
the Geotech indicate a geohazard or unstable slope? Yes ____ No ____ (yes = 1 point)
Total points = __2__
137.03' N89°40'
0
0
"
E
100' N 00°27'13" E 14
8
.
2
8
'
N
8
6
°
1
6
'
4
0
"
W
74.99'
R:300'
Baldwin Lane
R
e
b
e
c
c
a
&
M
e
r
r
i
l
l
H
u
n
t
1
5
5
B
a
l
d
w
i
n
L
a
n
e
,
P
o
r
t
L
u
d
l
o
w
W
A
9
8
3
6
5
P
a
r
c
e
l
#
9
9
0
6
0
0
1
0
6
1
6
%
s
l
o
p
e
o
n
w
h
o
l
e
p
r
o
p
e
r
t
y
S
l
o
p
i
n
g
d
o
w
n
f
r
o
m
W
e
s
t
t
o
E
a
s
t
74'
6
7
'
-
6
1
1
1
6
"
35'-438"Scale: 1"=15'North8'-934"NEW:1,716 SF House with484 SF att. Garage34'22'
20' Setback
5' Setback5' Setback5' Setback
8
8
'
-
1
1
9
1
6
"
232SFdeck
1
,
6
0
2
S
F
D
r
i
v
e
w
a
y
3
0
'
6'
E
l
e
v
a
t
i
o
n
:
1
1
2
E
l
e
v
a
t
i
o
n
:
1
1
2
Elevation: 133Elevation: 135
6
'
-
0
3
4
"
Silt fence along
set back
Dispersion trench
8x10concretepad
W
a
t
e
r
b
o
x
Sewer Line
P
o
w
e
r
L
i
n
e
W
a
t
e
r
L
i
n
e
U
p
d
a
t
e
d
-
1
2
-
1
1
-
2
0
2
0
1
8
'
2
'
2
'
T
r
a
n
s
i
t
i
o
n
z
o
n
e
-
c
r
u
s
h
e
d
r
o
c
k
o
r
o
t
h
e
r
a
c
c
e
p
t
a
b
l
e
m
a
t
e
r
i
a
l
1
0
'
v
e
g
e
t
a
t
e
d
b
u
f
f
e
r
T
y
p
e
1
C
B
3
6
'
2
'
25' vegetated flow path
2
5
'
Roadside ditch
1
0
'