HomeMy WebLinkAboutSWG2023-00056 - SWG Application / Design - 2/27/2023 oft
MASON COUNTY 415 N 6TH STREET,SHELTON,WA 98584
SHELTON:360 427-9670,EXT 400
BELFAIR:360-275-4467,EXT 400
; Public Health & Human Services ELMA:360-482-5269,EXT 400
% `` FAX:360-427-7787
On-Site Sewage System Permit: SWG2023-00056
APPLICANT Scott Bursell Phone:
Address: 25965 Tytler Rd POULSBO, WA 98370
OWNER MELLUM ET AL WILLIAM CLIVE JR & Phone:
ALICIA RENEE
Address: 2419 62ND AVE NW OLYMPIA, WA 98502
SEPTIC DESIGNER Bob Paysse -Pioneer Digging Inc Phone: 360-426-1803
Address: 3083 E Mason Benson Road GRAPEVIEW, WA 98546
Site Address: 540 N Dow Creek Dr
Primary Parcel Number: 422165000052
Permit Description: New SFR -3BR Pressure
Permit Submitted Date: 02/27/2023
Permit Issued Date: 04/12/2023
Issued By: Jeff Wilmoth
Current Permit Fees Paid: $525.00 (additional fees may be required upon installation of system).
Permit Expiration Date: 03/06/2026 (based on date of inspection)
Permit Conditions:
1 Proposed development subject to zoning requirements and approval by the planning
department staff per Mason County Title 17.
2 Permit must be installed by a Mason County Certified Installer unless prior written
authorization from Mason County is obtained.
3 Drain field installation not to exceed designed upslope and downslope depth specified on
design form.
4 Installer is responsible for obtaining Mason County installation approval prior to backfill of
system components.
5 Installer is responsible for obtaining Septic Designer/Engineer installation approval prior to
backfill of system components.
6 Mason County Asbuilt Form, Record Drawing, and Installation fee must be submitted for
final installation approval.
THIS PERMIT MUST BE ONSITE DURING INSTALLATION OF OSS.
PROPERTY OWNERS ARE RESPONSIBLE FOR DETERMINING AND MARKING ALL PROPERTY LINE AND EASEMENT LOCATIONS.
THIS PERMIT MAY BE REVOKED IF THE SITE CONDITIONS HAVE CHANGED SINCE THE SITE WAS INSPECTED AND DESIGN APPROVED.
FINAL INSTALLATION APPROVAL IS REQUIRED PRIOR TO TEMPORARY OR FINAL OCCUPANCY OF ANY RELATED STRUCTURES.
For Final Inspection visit: masoncountywa.gov/health/environmental/onsite/oss-inspection-request.php or call:
360-427-9670, extension 400.
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15 N.6th Street Shelton,WA 98584 S V\!G L J xi Q
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ON-SITE SEWAGE SYSTEM APPLICATION › r.
m APPLICANT PHONE m
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SCOTT & LAUREN BURSELL z
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MAILING ADDRESS-STREET.CITY.STATE.ZIP CODE E
25965 TYTLER ROAD POULSBO WA 98370 ITY.ZIP CODE co
540 N 5ITE S DOW-STREET,cCREEK DRIVE HOODSPORT WA 98548 14"
NAME OF DESIGNER PHONE N
ROBERT H. PAYSSE 360-426-1803
NAME OF INSTALLER PHONE I N
TBD •<
PERMIT TYPE(select one) DRINKING WATER SOURCE O
Li RESIDENTIAL OSS f COMMUNITY OSS P I r COMMERCIAL OSS ED PRIVATE INDIVIDUAL WELL ff PRIVATE TWO-PARTY WELL Z I CD
TYPE OF WORK(select one) 17 PUBLIC WATER SYSTEM LAKE CUSHMAN
I
f7 NEW CONSTRUCTION/UPGRADES REPAIR I REPLACEMENT OTHER DETAILS(select all that apply) 0 TABLE IX REPAIR I Ui
SUBMITTALS ElSURFACING SEWAGE 0 EXISTING FAILURE 0 SHORELINE W
MI c)L DESIGN FORM(REQUIRED) VSEPTIC DESIGN(REQUIRED) BEDROOMS LOT SIZE 0
5WAIVER(S)(IF APPLICABLE) THREE 0.19 0 .DIRECTIONS TO SITE AND SITE CONDITIONS (ex locked gate)
N. HWY 101 TO HOODSPORT. LEFT ON LAKE CUSHMAN ROAD/ HWY 119. FOLLOW I
UP HILL TO LEFT ON N POTLATCH-CUSHMAN ROAD. RIGHT ON LOWER LAKE RD. r I c)RIGHT ON DOW CREEK DRIVE. FOLLOW TO SITE ADDRESS 540. o
Hi
SITE MUST BE FLAGGED FROM MAIN ROAD AND TEST HOLES MUST BE FLAGGED WITH TEST HOLE NUMBERS. I N
OFFICIAL USE ONLY BELOW THIS LINE
UPGRADE/FAILURE SOURCE(tor reporting purposes)
0 VOLUNTARY ❑MAINTENANCE/PUMPING ❑BUILDING PERMIT ['HOME SALE ['COMPLAINT 0 OTHER:
INSPECTOR SOIL LOGS COMMENTS/CONDITIONS
0
frirug,
y i 1
2 3� L 5 FEif 1--e ? %B 2� 20Z3
1
By
RECORD DRAWING AND INSTALLATION REPORT
SOIL CODES:
V= ERY G=GRAVELLY S=SAND L=LOAM Si=SILT C=CLAY E=EXTREMELY R=ROOTS REQUIRED FOR FINAL APPROVAL
S CTOR SIGNATURE DATE APPLICATION EXPIRATION DATE A ION APPROVED/ISSUED BY DATE
JAI .34-2_5
_.....-7)--6.-2.(4) t/J ifv\ff 3-15:4
I MAY BE SCANNED AND AVAILABLE FOR PUBLIC VIEW ON THE MASON COUNTY WEBSITE REVISED 12/7/2015
DESIGN FORM—PAGE ONE Assessor's Parcel Number: 4 2 2 1 6 — 5 0 — 0 0 0 5 2
A design will be reviewed when 3 copies of each of the following are submitted:
''Completed design form that has been signed and dated. ''Scaled layout sketch,including all applicable items on checklist
Scaled plot plan,including all applicable items on checklist. '"Cross-section sketch,including all applicable items on checklist.
This form may be scanned and available for public view on the Mason County Web site. Maximum paper size: 11"Y 1 7"
jPPARCEL IDENTIFICATION
Permit Number: SWG "P.CAA 3— `,% Designer's Name: ROBERT H.PAYSSE
Applicant's Name: SCOTT&LAUREN BURSELL Designer's Phone Number: 360-426-1803
Mailing Address: 25965 TYTLER ROAD Designer's Address: 3083 E MASON BENSON RD
POULSBO WA 98370 GRAPEVIEW WA 98546
City State Zip City State Zip
DESIGN PARAMETERS
Treatment Device
❑Glendon Biofilter 0 Sand Filter 0 Mound 0 Sand Lined Drainfield 0 Recirculating Filter,Type:
❑Aerobic Unit Make/Model 0 Disinfection Unit Make/Model Other:
Drainfield Type
❑Gravity lif Pressure lifTrench 0 Bed 0 Sub Surface Drip
Septic Tank/Drainfield Specifications Laterals
Number of Bedrooms 3 Schedule/Class SCH.40
Daily Flow:Operating Capacity 270 gpd Length 50 ft
Daily Flow:Design Flow 360 gpd Diameter 1.25 in
Septic Tank Capacity(working) 1500 gal Number 3
Receiving Soil Type(1-6) 3 Separation 9 ft
Receiving Soil Appl.Rate 0.8 gpd/ft2 Orifices
Required Primary Area 450 ft2 Total Number of Orifices 39
Designed Primary Area 450 ft2 Diameter 3/16 in
Designed Reserve Area 450 ft2 Spacing 48 in
Trench/Bed Width 3 ft Manifold
Trench/Bed Length 150 ft Schedule/Class SCH. 40
Elevation Measurements Length 18 ft
Original Drainfield Area Slope 0 % Diameter 1.25 in
New Slope,If Altered 0 % Preferred manifold configuration used? Di Yes 0 No
Depth of Excavation Up-slope 11 in Transport Pipe
from Original Grade Down-slope 11 in Schedule/Class SCH.40
Designed Vertical Separation 24+ in Length <30 ft
Gravelless Chambers Required? 0 Yes Fli No 0 Optional Diameter 2 in
Pump Required? Cif Yes 0 No Dosing and Pump Chamber
Pump/Siphon Specifications Number of doses/day 6
Diff.in Elevation Between Pump&Uppermost Orifice 8 ft Dose quantity 60 gal
Drainfield Squirt Height/Selected Residual(head) 2 ft Chamber Capacity(flood) 1500 gal
Uppermost Orifice i 1 Higher 0 Lower than Pump Shutoff Pump controls:Please check those required.
Capacity @ Total Pressure Head 23 gpm RiTimer IifElapse Meter I'Event Counter
Calculated Total Pressure Head 14.8 ft If Ti : pnpnR... JiE..
, off 4 HRS
Comments
MAR 13 2023
MASON COUNTY ENVIRONMENTAL HEALTH
JBW
'DESIGN FORM—PAGE TWO Assessor's Parcel Number:4 2 2 1 6 — 5 0 -- 0 0 0 5 2
Permit Number: SWG
DESIGN CHECKLISTS
Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch
El Test hole locations 671 Drainfield orientation and layout Reference depth from original grade:
0 Soil logs 0 Trench/bed dimensions and iI Septic tank
0 Property lines critical distances within layout Q( Drainfield cover
0 Existingand proposed wells 6d D-Box/Valve box locations
p P Reference depth from original grade
within 100 ft of property 0 Septic tank/pump chamber and restrictive strata:
O Measurements to cuts,banks,and locations
� Laterals,trench bed,top and
surface water and critical areas 0 Observation port location bottom
0 Location and orientation of 0 Clean-out location 0 Curtain drain collector
curtain drain and all absorption 0 Manifold placement 0 Sand augmentation
components 0 Orifice placement Other cross-section detail:
• Location and dimension of 0 Lateral placement with distance 0 Observation ports/clean-outs
primary system and reserve area to edge of bed
g Other Information
Buildings 21 Audible/visual alarm referenced Yes No
Direction of slope indicator l�f� �n I� ❑D
Design staked out
Waterlines r ■■ ❑ [1 Recorded Notices attached
0 Roads,easements,driveways, MAR 13 2023 o Waiver(s)attached
parking 0 0 Pump curve attached
0 North arrow and scale drawing
MASON-COUNTY ENVIRONMENTAL HEALTH 0 21 Evaluation of failure
shown on scale bar JBW Non-residential justification
❑ 11 Waste strength
❑ 0 Flow
DESIGN APPROVAL
The undersigned designer must be notified by inst r at time of installation 21 Yes 0 No
04,,Z+11.- (.2-3
Signature of Designer Date
The undersigned has reviewed this design on behalf of Mason County Public Health and determined it to be in
compliance with state and local o ' e regulations:
(01 3-( 3 - 2 3
Env' o taWalth Specialist Date
P
CAUTION: DESIGN APPRO AL IS VALID ONLY UNDER THE FOLLOWING CONDITION:
✓ The design is stamped"Approved"by Mason County Public Health. `� y
✓ The Onsite Sewage Permit has not expired,the Permit Expiration Date is: J /�j
✓ Drainfield site conditions have not been altered to adversely affect conditions of design approval.
Please Note: The system must be installed by a certified installer,
unless prior authorization is obtained from Mason County Public Health.
An Installation Fee is required.
This form may be scanned and available for public view on the Mason County Web site.
Updated Date: 12/7/2015
_ _ _ _ _ _ ___ ____
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I AN ASBUILTI INSTALL SIGNOFF FEE WILL
BE CHARGED AT TIME OF INSTALLATION
I
CUSTOMER: SCOTT BURSELL TEST HOLE I: TEST HOLE 2:
PIONEER DIGGING INC. 39 GIS
39+ 0-4IGIS
PARCEL# 42216 50 00052 GMS 41+CMS
SEPTIC DESIGNS ADDRESS: 540 N DOW CREEK DR. ROOTS-39 ROOTS-41
3083 E MASON BENSON RD. GRMEVIEW,WA 98546 DESIGNER: ROBERT H.PAYSSE DISCLAIMER
REY ELESS SDE`��DR
OVIDED
PLAT R SUVEYsFIELD MA SURVEY.
0 UNRENCES N GISDESIGN INTENDED SEEP C
OFFICE 360 4261803 FAX 360 427 2353 SHEET: SITE PLAN SCALE l"=20' �RSES ONLY ARTAENT/AGENCY REVIEW DESIGNER NOT RFESPONSIBLE FOR SETBACKS UNRELATED TNT MAY BE SUBJECT TO O
SEPTIC COMPONENTS.
AN ASBUILT/INSTALL SIGNOFF FEE WILL C/O
BE CHARGED AT TIME OF INSTALLATION
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CUSTOMER: SCOTT BURSELL TEST HOLE k TEST HOLE 2:
PIONEER DIGGING, INC. PARCEL# 42216 50-00052 GLS
3q9CMS '
GLS
SEPTIC DESIGNS ADDRESS: 540 N DOW CREEK DR ROOTS 39 ROOTS 41 •
3083 E MASON BENSON RD. GRAPEVIEW,WA 98541 DESIGNER: ROBERT H.PAYSSE gTSO'RSURVEYS IR:THIS tS ELLDMEEASUREMENTSANDCOU OT A SURVEY.REFERENCES INCLUDE APPLICANT/COUNTY
`GN NTENCEo ORSEPTIC
OFFICE 360-426-1803 FAX 360 427 2353DEPARSMS ONLY VIEW PROPOSED DEVELOPMENT MAY BE SUBJECT CKS E OTTEO TO
SHEI 1 DF DETAIL SCALE: 1"=10' SEPTIC NLY REVIEW DES GNER NOT RESPONSIBLE FOR SETBACKS UNTO ATED TO
_SEPTIC COMPONENTS
OB. PORT CLEANOUT
FINISHED GRADE
SANDY FILL
I 7. \
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I FILTER
+ I FABRIC
\___ ORIGINAL f:i:i:o � �=.: :!'A'O'i_
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VERIFIED DEPTH
24" RISER OR
VALVE BOX TO
GRADE
/ THREADED CAP
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" ORIFICES c I I
12:00 IN/ SHIELDS — BALL VALVES
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90° ti _ - CHECK VALVES
SWEEP %7=7` =.' ' ' A�'
•_•_•=f=•_g_�_f=•Wdt (AS NEEDED)
GLUED TEE APPROVER ,Ift,
MAR 1 3 2023 co..., �
•
MASON COUNTY ENVIRONMENTAL HEALTH '
��16j' sceea H3Tpgrsse it,,
J BW re.
AN ASBUILT/INSTALL SIGNOFF FEE WILL ' EXPIRES
BE CHARGED AT TIME OF INSTALLATION
CUSTOMER: SCOTT BUR-SELL TEST HOLE!: TEST HOLE 2:
PIONEER DIGGING INC. 0-39 tS 0-41CAS
PARCEL# 42216 50-00052 39+GtitS 41+c.w
SEPTIC DESIGNS ADDRFSS: 540 N DOW CREEK DR ROOTS-39 ROOTS-41
PLACLAIMERI TIRE S NOT A SURVEY.REFERENCES INCLUDE'DESIGN MTICOUNT PROVIDED
3083 E MASON BENSON R.D. GRAPEVIEW,WA 98546 DESIGNER: ROBERT H.PAYSSE PLATS OR SURVEYS FIELD SURVEEMENTS ANO RENCOUNTY(US DESIGN INTENDED FOR SEPTIC
.
OFFICE 36(}42618U3 FAX PURPOSES ONLY PROPOSED DEVELOPMENT MAY BE SUBJECT TO OTHER
360-427 2353 SHEET: DF DETAIL(2) SCALE NA DEPARTMENT/AGENCY REVIEW DESIGNER NOT RESPONSYLE FOR SETBACKS UNRELATED TO
SE➢TIC COMPONENTS
24"RIBBED RISERS WI BOLT ON WATER-TIGHT LIDS
USE RISER LID ADAPTERS WITH NO GASKET LIDS
CLEAN:UT
b �. FINISHED GRADE a a
` - C� = WATER-TIGHT
EibM �" •.y;� `f:q• . :}: v e a: JOINTS
INLET t L.,,``i -
I--`' • �.-;' OUTLET
TWO WAY TEE ti
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,; 4"OSI
WATER-TIGHT ": r; EFFLUENT
JOINTS !"` —
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• — FILTER
1500 CALLON WATERTIGHT `.
TANKS MUST BE • y-t
ON STATE DOH CONCRETE SEPTIC TANK ;?
APPROVED LIST <* •. USE TANKS FITTED
OF SEWAGE �. .' W/CAST IN WATER
TANKS ry••wJJJv
TIGHT FITTINGS FOR
AdrdejfKecir,,. ;, i, ,::, :,..,�.:x;-..:d..� ti.;:�.:;:: ADAPTERS TO
W.` .w. .n. y.�!.:•1 .e i n.. . - �* : ::.,, +Y•♦ .. 1 r t.r -. I',!.:.is v
ENSURE WATER
1 :�I, TIGHTNESS
:tq-�• t' � AQUAWORKS
,!�,�,• 0' V CONTROL PANEL
•�'• yy1Cp31T •
�„. W/TIMER EVENT COUNTER • ELECTRICAL WORK DONE 24"RIBBED RISERS
'� •• ' ' ';' i N PAYS . &HOUR METER BY LICENSED ELECTRICIAN
1 "iF . :u •r ••; . W/WATER TIGHT LIDS
EXPIRES
11 r a FINISHED GRADE
CJ
ELECTP.CAL CONPVIT ,� 1 1l 1 I
��J'' TRANSPORT LINE
e
I
INLET UNION& BALL VALVE
1500 GALLON WATERTIGHT
-11
CONCRETE PUMP TANK
(28 GAL./IN.)
WATER-TIGHT
JOINTS
PRESSURE TRANSDUCER CHECK VALVE
(OR FLOATS) ��
r
PUMP TANKS USE RUBBER
OVER 1000 GAL. PUMP BUCKET: ' : GROMETS FOR
TRANSPORT LINE
BUCKET HEIGHT MUST BE AND ELECTRICAL
AT LEAST HEIGHT OF PUMP
A7C1MA.ER:PlE39
ON RISERS. MAKE
2023 'a .. - : • •• '•'• a SURE ALL HOLES
ARE WATER-TIGHT
MASON COUNTY ENVIRONMENTAL HEALTH
J DVy CUSTOMER: SCOTT BURSELL SCALE NA
PIONEER DIGGING, INC. PARCEL#:42216-50-00052 INSTALL TANKS ON ORIGINAL OR
SEPTIC DESIGNS ADDRESS: 540 N DOW CREEK DR COMPACTED LEVEL SOILS. RUN CROSS
3083 F MASON BENSON RD. GRAPEVIEW,WA 98546 DESIGNER: ROBERT EL PAYSSE CONNECTIONS INTO ORIGINAL SOILS TO
AVOID SETTLING.
OFFICE-360426-1803 FAX-360-427-2353 SHEET: TANKS SCALE NA
c
Pump Specifications +;-,l
IL
280 Series 1t2 hp rr
Submersible Effluent Pump
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LATERAL LATERAL FEEDER TOTAL ORIFICE ORIFICE ORIFICE DIST.TO TOTAL TOTAL
LATERAL# LENGTH PIPE SIZE LENGTH LENGTH SIZE(inch) DISCHARGE SPACING 1ST ORIFICE ORIFICES HEAD
(feet) (inches) (feet) (feet) RATE(gpm) (feet) (inches) (feet)
1 50 1.25 3 53 3/16" 0.59 4 12 13 0.47
2 50 1.25 9 59 3/16" 0.59 4 12 13 0.53
3 50 1.25 18 68 3/16" 0.59 4 12 13 0.61
DRAINFIELD HEAD(feet) 1.61
TRANSPORT LINE HEAD(feet) 0.29
ELEVATION CHANGE(feet) 8
RESIDUAL/SQUIRT(feet) 2
EXTRA LOSS/FITTINGS(feet) 3
TOTAL DYNAMIC HEAD(feet) 14.89
TOTAL GALLONS PER MINUTE 23.01
APPROVED
MAR 13 2023 ��
1 •
MASON COUNTY ENVIRONMENTAL HEALTH '
JBW +rio.,.N ,
IGGING INC. CUSTOMER SCOTT BURSELL : • _ , .
PIONEER D PARCEL#:42216-50-00052 ''�• 640317 'ii/ "
V rcx ROBERT H WSW
SEPTIC DESIGNS ADDRESS: 540 N DOW CREEK DR /IN�� .-. y •.t
3083 E MASON BENSON RD. GRAPEVIEW,WA 98546 DESIGNER: ROBERT EL PAYSSE EXPIRES
OFFICE-360-426-I803 FAX-360.427-2353 SHEET: CALCS SCALE NA
'Installation & System Notes
1. Installer must contact designer for final inspection of the installation prior to cover. All components, including tanks, lids,
transport line, drainfield, and water lines must be open for inspection. A$350.00 fee will be charged for time involved with the
inspection of the installation and creation of the record drawing. The designer reserves the right to charge additional fees if
multiple visits are needed due to installation errors or inaccessible components.
2.This septic design must be installed by a certified installer with the local health department. All components shall be installed
according to state, county,and manufacturer requirements. For Homeowner Installs,the owner must get approval from the
designer and local health department prior to attempting installation.
3. Designer is not a surveyor. Installer must familiarize themselves with property line locations prior to installation. Any
confusion or conflicts with line locations should be reported to the property owner. A licensed surveyor may be necessary prior
to installation to confirm all line locations. Any discrepancies found must be reported to the designer immediately.
4. Drainfield area may only be cleared by a licensed installer familiar with sensitive drainfield area preservation. The builder, lot
developer,or property owner shall not clear the drainfield area. Any clearing required for drainfield installation shall not
remove or disturb any top soil in Primary and Reserve areas. Removal or disturbance to drainfield soils could render design
void.
5.The property owner and installer are responsible for locating all underground utilities (ex. water,gas, electric) prior to
installation. Any utility locations shown within design drawings are likely approximate and may not be exact.
6.All proposed tanks must be installed on original soils or compacted gravels. Extend all tank connection lines out onto original
soil to avoid settling issues. Risers and lids must be brought to finished grade and left accessible for future operations and
maintenance. Component manufacturers (ex. ATU, Glendons,) may have other requirements not listed within this design.
7.All electrical wiring shall be done by a licensed electrician or homeowner(if allowed) and must be permitted through Labor
and Industries.
8.The proposed septic system should be installed in dry weather conditions. Any failed attempts at installation during wet
weather conditions may render this design void.
9. Maintain 10ft to waterlines with all septic components. If less than 10ft is required,sleeving in sch.40 pvc is required. If
sewage transport lines and waterlines must cross,waterline must be 18" above sewage line with one of the lines sleeved in sch.
40 pvc loft in each direction of crossing.
10.This design may include waiver applications with specific mitigation measures pertaining to installation,operation and
maintenance of the proposed components.
11. Stormwater runoff,footing drains, roof drains must be diverted away from any septic system components. No curtain,
foundation, perimeter drains shall be installed 30ft downslope and loft upslope of drainfield areas.
12. This design is site specific and intended to meet state and county requirements that are related to the system components
being proposed. Any placement of proposed buildings, proposed wells or other non-related items on these drawings may or
may not meet other requirements.
13. All onsite septic systems require regular maintenance to verify satisfactory operation. The system owner/operator is
responsible for the continuous operation and maintenance of the system per WAC 246-272A. For operation and maintenance
information, refer to Mason County Public Health Homeowner's Manual,which should be received after installation approval.
14. System owner should be cautious of landscaping around septic components. Root intrusion
can cause premature failure of the drainfield ar In pdpireeirer ould be kept
away from lids and other septic maintenance p ``,yam
MAR 1 3 2023 , .cs
ti9ASON COUNTY ENVIRONMENTAL HEALTH c6t
CUSTOMER: SCO 1 1 BURSELL �.o' �' •
PIONEER DIGGING, INC. PARCEL# 42216 50 00052 p aoeen.:0+3
wrssE Al
SEPTIC DESIGNS ADDRESS: 540 N DOW CREEK DR ii^_iii• �ii...``..
3083 E MASON BENSON RD. GRAPEVIEW,WA 98546 DESIGNER: ROBERT H.PAYSSE EXPIRES
OFFICE-360 426-I803 FAX-360-427-2353 SHEET: NOTES SCALE NA
e v%rotecli ev4,g1 1A,eeri,v4,43
eoteckvu,cal o Ewvi.rovt.vu.evttaL a Drai.vvage o RoadwaJ
March 30,2023
Scott Bursell
25965 Tytler Road NE
Poulsbo,Washington 98370
RE: Geotechnical Evaluation of On-Site Septic System
540&542 Dow Creek Drive,Hoodsport,Washington
Parcel#42216-50-00052&42216-50-00052
To Whom It May Concern,
Envirotech Engineering (Envirotech) completed a site visit on March 29, 2023 to the referenced property
in order to observe surface and subsurface conditions. This geotechnical evaluation addresses the
proposed on-site septic system with relation to landslide hazards on and near the property. Information
collected from site observations and field testing was completed by Michael Staten with Envirotech.
Subsurface conditions were visually classified as a shallow layer of silty sand with gravel (SM) overlying
cemented glacial till soils.The septic drainfield area is within flat to slightly sloping terrain with grades of
less than 5%.Critical descending slopes exceeding 40% were observed just beyond the property.
It is our opinion that the proposed septic system will not influence the nearby critical descending slopes
exceeding 40%, provided that vegetation remains undisturbed on the critical slopes. Earth movement
remains a potential within the critical slopes, but this feature is located outside the influence zone. The
property with the steep slopes may or may not experience shallow landslides. However, we believe that
the proposed drainfield has a sufficient setback from the top of critical slope, and will not contribute to
future landslides. Furthermore,special septic design or other mitigations are not required.
If you have any questions or need any further assistance,please contact Michael Staten at 360-275-9374.
Sincerely,
Envirotech Engineering
NO- CLYDE`rT
fSSiO\AEa6 L \�
3/30/23
Michael Staten,P.E.
Project Director
PO S0X984
SeLfaLr,wask .gtow98528
Off: 360-275937.4
CCU.: 360-6g9-6045