HomeMy WebLinkAboutGeotech Waiver 978900097TO: Linda Paralez, UDC Administrator
FROM: Shannen Cartmel, Assistant Planner
DATE: 01/23/2020
RE: ---Oak Bay Road, Port Ludlow, WA Parcel # 978900097 Geotech Waiver
Request — Approval Recommendation
Ms. Theisen applied for a geotech waiver during the course of a septic permit application. Ms.
Theisen plans to construct a single-family home. Ms. Theisen's property is mapped as a slight
landslide hazard area and intermediate shoreline slope. I have reviewed Ms. Theisen's waiver
request, available map and data, and completed the attached geohazard checklist. Ms. Theisen
will implement applicable best management practices during construction. Ms. Theisen's septic
permit does not trigger a geotech, as her site is less than 15% grade. The slope across the
property is approximately 11.4% and the development (house and septic) are located on an area
of the parcel that consists of a 5% slope. Based on our available data, Ms. Theisen's site,
proposed development, and analysis from the geohazard checklist I find that the standards for a
geotechnical report waiver, under Jefferson County Code 18.22.370, have been satisfied.
YApproved
Denied
Attachments:
Supplemental application waiver from special reports — geotech
Maps
Geohazard Checklist
Site Plan
0
DEPARTMENT OF COMMUNITY DEVELOPME
621 Sheridan Street, Port TownSenLl, \\'.\ 98368
TO: 360.3 79.4450 1 Vas: 360.39.4451
Web: cw '•crn-1 aer��.�c;i��. 4r�iii�ynit dr�t]nhmc iv
F',-mail: f cea of • •r�exr u• r ru: ��
WAIVER REQUEST��
FROM SPECIAL REPORTS
1, Mary Ellen Thiesen owner of parcel 978 900 097
Property Owner's Name Parcel number
located at Oak Bav Road
Property Address
hereby request a waiver from the requirement for a Geotechnical Report
Type of Special Report
n. _ , 20,20
underJCC 18.22.370, in association with critical area review and protection standards underJCC
18.22.170 for permit application SEP 19- 272
p pp for the following reasons:
Code Section permit case number
18.22.370 Waivers.
The administrator may waive the requirement for a special report when an applicant demonstrates all of the following:
(1) The proposal involved will not affect the critical area in a manner contrary to the goals, purposes and
objectives of this code, because:
see attached
1.24 The minimum protection} standards required by this chapter are satisfied, by:
see attached
Signed J�&v For Theisen
Property Owner
Staff Comments:
1 /17/20
Date
■
Special Report Waiver Justification
Theisen SEP 19-272
Parcel 978-900-097
1- Minor slope — The property slopes East toward Oak bay, with slopes ranging from 5-15%.
The proposed development (house and septic system) lies on a five percent slope.
2- Distance to moderate / high land slide risk areas — There is approximately 1700' to high risk
/ active slide areas. (see exhibit A).
3- No signs of erosion, or landslide activity in area of proposed development.
q f.
Ln
ID
Q, 00 04..
O ��------
0_
O
!.
r O
0 O O if� O C5
O A G •�" 900
O m
0 00 (n
CL00068L6 to rn 00
01000fi816
+ 6900069LG
0
OD
w
o
o
---
0o
0
co
co
IT
5
co01-got
Q'1
o r Li ro
a�
a to
r-
a C7 95000fiUe
o z+
0 t- 00 � s�
00 r p m 0
P !!]
v v�i
a�
m
ti
o O
co
r �
�(] u i
O p
r r
N N
O ' m
w ..
Ply-a6
Geohazard Checklist
(for internal use only)
1. Which of the following are mapped
mapped on -site?
Land Slide Hazard: Slight X Moderate High
Erosion:
Seismic:
Shoreline Slope Stability: Unstable Landslide
Two or more? Yes K. No (yes = 1 point)
Recent Landslide Old Slide
Modified I Al-0-(YY d1,C'�J--e
2. Existing Development? Yes _ No tC Evidence of geohazard? Yes_ No _ (yes/yes = 1
point)
3. Is the slope greater than 15 %? (rise/run = %) Yes No (yes = 1 point) (l
4. Will the development be less than 35 feet from the top or toe of slope? Yes
= 1 point)
S. Does the site
have a less stable slope form? Yes No Y (yes = 1 point)
Divergent � (most stable) Planar (more stable) Convergent _
No_,)(_ (yes
(less stable)
6. Is there any information regarding stability of the soil e.g. septic soil logs, NRSC soil survey etc.
Yes l No ( 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) _ 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 L_ (yes = 1 point for each indicator)
9. Were there any other Geotechs done on adjacent properties? Yes No / If yes, did the
Geotech indicate a geohazard or unstable slope? Yes No (yes = 1 point)
Total points =
ELI85'
I
I
I
EL 190'
I
I
I
I
l
EL1951
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
EL 200' 1
I
I
I
EL 205' 1
I �
I C:
W
IQ
I �
I o
I�
I �
i
EL219 I
I
I
I
I
I
I
I
I
I
I
I
I
I
1
I
1
I
r�'�
1
\ Project scope:1-Install 240 GPD septic system for new 2 bedroom home.
L
1
l
x �
\\ Proposed OSS Components: (see detail page)
I 1-1000 gallon 2-compartment septic tank.
\ 2-1000 gallon concrete pump tank
I 3-240 GPD Glendon Biofilter M-31 Drainfield Area
\ 4-240 GPD Reserve Drainfield Area
I
I
\
\
\
\
i
\\ Note- Cut bank to Oak Bay Road. -
Has been evaluated, <100% = 0 setback.
� o
'
\ m
O
5
reserve .00A
s t
s SL 3
\
primary �'n %L
\
O
\
5'r_
\
min
\
approximate
\
building site I SL 1
\
_ C)( wr
\
� r
\
Elevations:
FF- 209.5'
Stub EL- 206.5'
ST I E- 205'
Pump on- 200'
DF IE- 208'
Material Specifications:
sewer line - 4" PVC ASTM 3034
pump line - 2" PVC SCH 40
fittings - PVC SCH 40
distribution laterals - 1" PVC SCH 40
Elevations Approximate
rLm0
0 50' 100,
SCALE 1 "=50 FEET
Homeowner Obligation:
- Recommend homeowner provide survey or mark property boundary lines prior to installation.
If no land survey is provided to designer or installer, then homeowner will be
responsible for costs of restoring affected lot/s should the septic
system encroach on neighboring property. Homeowner will also be charged for
replacement parts and labor used towards restoring drainfield should it need to be moved.
DEC 2 3 2019
Site Development Notes:
- Property boundaries and elevations scaled from Jefferson County GIS,
and are approximate.- Protect Drainfield Areas from vehicle traffic, excavation, burn piles, erosion,
or any other soil disturbing activities.- Installation shall conform to plan specifcations,applicable county
and state regulations, and industry standards, Any deviation / substitution must be approved
by designer and/or JCPH prior to installation.- House location and construction subject to DCD approval.
Installation Notes:
- Installer and/or owner shall verify locations prior to installation.
- Contact designer prior to installation to coordinate required inspections.
- Installation shall conform to plan specifications, applicable county
and state regulations, and industry standards. Any deviation / substitution must be approved
by designer and/or JCPH prior to installation.
- Protective barrier meeting JCPH requirements must be installed between driveway and
tanks / drainfield areas.
OSS SITE PLAN
MARY ELLEN THEISEN
Parcel # 978 900 097
Olympus Beach lot 101
SEC 4 TWP 28N R1 E
SHEET 1 of
0
c
aD
Q..
0
Q_
property line
GBT M-31 type 4layout
(typ f 2) ,
S6
monitoring port
(typ)
6 0
4
1" pvc sched 40 '1 ; `� ' SL2
distribution line -
(typical)
u�
Proposed 2" PVC SCH
40 transport lin+ effluent header
manifold
pump
building site
proposed
2 bedroom
home
`proposed
water line
-__proposed
septic tank
out
Elevations:
FF- 209.5'
Stub EL- 206.5'
ST IE- 205'
Pump on- 200'
DF IE- 208'
Material Specifications:
Sewer Line: 4" PVC ASTM 3034
Transport Line: PVC SCH 40
Distribution Lines: PVC SCH 40
Fittings: PVC SCH 40
GBT Media: Per GBT
Proposed OSS Components:
1-Minimum 1000 gallon two compartment septic tank with
approved filter in outlet baffle. Risers to surface required.
2-1000 gallon pump tank with effluent pump per specification.
Screened vault, and riser to surface required. Pump to be controlled
byAquaworx panel set to GBT specifications.
All tanks must be on current WSDOH approved list.
3- (240 GPD) 2 X GBT M-31 installed per GBT guidelines.
4-100% Reserve Drainfield Area (see sheet 1)
Installation Notes:
- Contact designer prior to installation to coordinate required inspections.
- Installer and/or owner shall verify locations prior to installation.
- All work in OSS area by GBT licensed installer only.
- Installer may adjust locations within immediate area provided that all required setbacks are maintained.
- Installation shall conform to plan specifrcations,applicable county
and state regulations, and industry standards. Any deviation / substitution must be approved
by designer and/or JCPH prior to installation.
- Establish grass or similar vegetative cover as soon as possible after installation.
I7
SEC 4
Elevations Approximate
0 20' 40'
SCALE 1 "=20 FEET
n r
OSS SITE PLAN
MARY ELLEN THEISEN
Parcel # 978 900 097
Olympus Beach 102
TWP 28N R 1 E
SHEET 2 of 2
RELEASE AND WAIVER
Applicant: Mary Ellen Theisen
660 Jefferson Ave
Port Ludlow, WA 98365-9659
H
E6ISadE -,;
FEB 2 4 2020 D
Property: Assessor's property tax parcel no.: 978900097
Legal description: Section 4 — Township 28N — Range IE; OLYMPUS BEACH
LOTS 101(ALL),102(N 15')
Address: --- Oak Bay Road, Port Ludlow, WA 98365
Please read this form carefully and be aware that, in applying for and receiving a permit
for development, you are knowingly and willfully seeking a waiver from the requirement of a
professional geotechnical report describing your Property, proposed development, and potential
risk of earth movement. Your Property contains a mapped Geologically Hazardous Area, a
Critical Area as defined by Chapter 18.22 of the Jefferson County Code. Mapped Geologically
Hazardous Areas may contain site features, such as soil, hydrology, or topography features that
increase the risk of earth movement, which may present a risk to life and property. In accordance
with permitting the construction of the items described and listed below within an
Environmentally Sensitive Area, Applicant(s) acknowledge and agree as follows:
1. Applicant(s) desire to construct a new septic system and single-family residence. The
Property is located within a Geologically Hazardous Area with a slight Landslide
Hazard Area and Intermediate Shoreline Slope Stability. Applicant(s) agree that they are
fully aware of the risks inherent in development in a Geologically Hazardous Area,
slight landslide hazard area and Intermediate Shoreline Slope Stability.
2. Applicant(s), as their own free and voluntary act, accept, and assume all risks of loss or
damage arising out of the conditions described herein and further agree to relieve
Jefferson County, its agencies, divisions, officers, agents, and employees of any
liability, damages, claims, or other expenses arising as a result of or allegedly as the
result of the approval of the development and the approval of the Applicant(s)' proposed
development.
3. Applicant(s) agrees to and shall hold harmless and indemnify the Jefferson County, its
agencies, divisions, officers, agents, and employees from and against any and all
Page 1 of 3
liability, loss, claims, suits, damages, costs, expenses (including attorney's fees) that
may arise at any time, occur or be generated as a result of any reduction in the fair
-market value of the Applicant(s)' Property and/or any damage to personal property or
r --personal injury bj reason of the conditions existing now or any time hereafter on or
around the Applicant(s)' Property or due to any design, development, or construction
pursuant to the building permit, stormwater management system approval, septic permit,
or any other development permits issues thereunder by the Jefferson County, its
agencies, divisions, employees, agents, officers, or representatives pursuant to any then
applicable state statute, administrative code, regulation, or Jefferson County ordinance.
4. If any term of this Waiver is to any extent invalid, illegal, or incapable of being
enforced, such term shall be excluded to the extent of such invalidity, illegality, or
unenforceability; all other terms shall remain in full force and effect.
5. All associated permits must be obtained or development must be substantially started
within one-year from the effective date of this Waiver. If this condition is not met, the
Waiver shall be void.
6. Development and associated permits must substantially comply with the Exhibit "A"
Site or Development Plan.
7. This Waiver is not a vermit of any type.
Applicant(s):
a y VTheisen
Page 2 of 3