HomeMy WebLinkAboutSWG2024-00192 - SWG Application / Design - 5/6/2024 ® MASON COUNTY 418NB SHELTON: , 0427-970,EXT 400
SHELTON:360d2]-96]0,EXT 400
BELFAIR:380.275d46],EXT 400
Public Health & Human Services ELMA'380>82-5299.EXT 400
FAX 360427-7787
On-Site Sewage System Permit: SWG2024-00192
APPLICANT CALVIN DAHL Phone:
Address: 261 HAMILTON RD N CHEHALIS,WA98532
SEPTIC DESIGNER ADAM HUNTER' Phone: 360-753-1226
Address: PO Box 162 OLYMPIA,WA 98507
Site Address: W HIGHLAND RD
Primary Parcel Number: 520241350060
Permit Description: New SFR-3BR Pressure
Permit Submitted Date: 05/06/2024
Permit Issued Date: 08/06/2024
Issued By: Jeff Wilmoth
Current Permit Fees Paid: $540.00 (addNoaaUees may be required uWn lmblleddn or system).
Permit Expiration Date: 05/2312027 (band an dale of modoomm)
Permit Conditions:
i 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 Drainfield 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/Enginser installation approval prior to
backfill of system components.
6 Mason County Asbuitt 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/onvironmentaVonsiteloss-inspection4equest.php or call:
360-427.9670,extension 400.
OFFICAL USE ONLY
MASON COUNTY PUBLIC HEALTH
ONSITE SEWAGE SYSTEM APPLICATION
415 N6th Sheet(Bldg 8) Shel9 WA98584 O y
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261 HAMILTON RD N CHEHALIS WA 98532 3
eXX GHLAND RD LOT SHELTON WA 98584p
XAME OF DESIGNER vlaxE I
ADAM HUNTER 3607531256 N
NAME OF INSTALLER PHDNE I�
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THIS O M AY E SCANNEDAND AVAILABLE FOR PUBLIC VIEW ON THE MASON COUNTY WEBS* REVISED iLlrzP15
5 00 Leo
DESIGN FORM—PAGE ONE Assessor's Parcel Number. _A_OR_�L — _t 3— D
A design will be reviewed when 3 copies of each of the following are submitted:
O Completed design form that has been signed and dated. I Scaled layout sketch,including all applicable items on checklist
Scaled plot plan,including all applicable items on checklist. 0 Cross-section sketch,including all applicable items on checklist.
This form maybe scanned and available for public view on the Mason County Web site.Maximum paper size: 11"X I7"
PARCEL IDENTIFICATION "
Permit Number: SWG 001 qZ Designer's Name: ADAM HUNTER
Applicant's Name: CALVIN DAHL Designer's Phone Number: 360-753-1226
Mailing Address: 261 HAMILTON RD N Designer's Address: PO BOX 162
CHEHALIS WA 98532 OLYMPIA WA 98507
city State Zip City State zip
DESIGNPARAMETERS
-
Treatment Device
0 Glendon Biofilter ❑Sand Filter ❑Mound ❑Sand Lined Dminfield ❑Recirculating Filter,Type:
❑Aerobic Unit Make/Model ❑Disinfection Unit Make/Model Other:
Drainfield Type
O Gravity MJ Pressure dTrench 0 Bed ❑ Sub Surface Drip
Septic Tank/Drainfield Specifications Laterals
Number of Bedrooms 3 Schedule/Class 40
Daily Flow:Operating Capacity 270 glad Length 40 ft
Daily Flow:Design Flow 360 gpd Diameter 1.26 in
Septic Tank Capacity 1200 gal Number 5
Receiving Soil Type(1-6) 4 Separation 6 ft
Receiving Soil Appl.Rate 0.6 gpd/ftr Orifices
Required Primary Area 600 ft, Total Number of Orifices 65
Designed Primary Area 600 ft, Diameter 1/6 in
Designed Reserve Area ft? Spacing 36 in
Trench/Bed Width 3 ft Manifold
TrencWBed Length 200 ft Schedule/Class 40
Elevation Measurements Length 20 ft
Original Drainfield Area Slope ID % Diameter 2 in
New Slope,If Altered 10 % Preferred manifold configuration used? GrYes 0 No
Depth of Excavation Up-slope 'Ly in Transport Pipe
from Original Grade Downalopc y in Schedule/Class 40
Designed Vertical Separation >24 in Length -1(� ft
Gravelless Chambers Required? ❑Yes O No G(Optional Diameter 2 in
Pump Required? 16 Yes O No Dosing and Pump Chamber
Pump/Siphon Specifications Number of doses/day 6
Difference in Elevation Between Pump Shyto�ff and Uppermost Dose quantity 60 gal
Orifice 9 it Chamber Capacity 1200 gal
Uppermost Orifice R(Higher 0 Lower than Pump Shutoff P on(,Is�leg c�pc,]k�[hopsrre required.
Capacity Qa Total Pressure Head L& .11 Sr gpm �e' rr gHl /VT o�l�se ; l�Event Counter
Calculated Total Pressure Head /0 4 Y 1 ft If r. 0 60 PiAL` off 4 HRS
Comments MASON COUNTY ENVIRONMENTAL HEALTB
Jaw
DESIGN FORM—PAGE TWO Assessor's Parcel Number:52_6 -- 1 --'L2-it 6-t "8
Permit Number: SWG 5 00 wo
DESIGN CHECKLISTS
Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch
lI Test hole locations IZ Drainfield orientation and layout Reference depth from original grade:
IZ Soil logs d Trenchlbed dimensions and Ef Septic tank
V Property lines critical distances within layout l7 Drainfield cover
IZ Existing and proposed wells EX D-Box/Valve box locations Reference depth from original grade
within 100 ft of property IZ Septic mak/pump chamber and restrictive strata:
19 Measurements to cuts,banks, and locations ❑ Laterals, trench bed,top and
surface water and critical areas IZ Observation port location bottom
IZ Location and orientation of 9 Clean-out location ❑ Curtain drain collector
curtain drain and all absorption 1f Manifold placement ❑ Sand augmentation
components Ef Orifice placement Other cross-section detail:
E9 Location and dimension of yf Lateral placement with distance E9 Observation ports/clean-outs
primary system and reserve area to edge of bed Other Information
IZ Buildings 19 Audible/visual alarm referenced Yes No
E9 Direction of slope indicator 1f Sc I f oVcale Rf ❑ Design staked out
12i Waterlines baz � E ❑Recorded Notices attached
Ef Roads,easements,driveways, �a ❑Waivers)attached
parking JUL 3 1 2024 ❑ Pump curve attached
❑ Evaluation of failure
19 North arrow and scale drawing MASON COUNTY ENVIRONMENTAL HEA T
shown on scale bar JBW on-r justification
❑ ❑Waste aste s stt rength
❑ ❑ Flow
DESIGN APPROVAL
The undersigned designer must be ed by installer at time of installation am Yes ❑ No
5/1/24
.lure 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 regulations,
E iro tal Health Specialist Date
CAUTION: DESIGN APPROVAL IS VALID ONLY UNDER THE FOLLOWING CONDITION:
✓ The design is stamped"Approved"by Mason County Public Health. _
✓ The Onsite Sewage Permit has not expired,the Permit Expiration Date is: � 7
✓ 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
MASON COUNTY HEALTH DEPARTMENT
ONSITE SEWAGE DISPOSAL SYSTEM DESIGN S'm10U
SITE#: PARCEL#:520241390090
DATE SUBMITTED: W12024 LEGALILOT#:HIGHLAND ACRES
LOT 0
SUBMITTED BY: ADAM HUNTER
APPLICANT: CALVIN DAHL
ADDRESS:
L CM-CULATIONS
NUMBER OF BEDROOMS= 3
RESIDENTIAL GPD FLOW= 30
IF NONi ESIDENTIAL-GPD FLOW
WILL BE AS FOLLOWS:
GPD=
APPLICATION RATE= 0.6 GPDIFT2
REDUCTION=LEAWBIANK FNO REDUCTION TAKEN
GRAINFIELD SIZING
ABSORPTION AREA= 900 FT2
TRENCH LENGTH OR BED CONFIG.= 6-40FT TRENCHES
1.WATERPROOF SEPTIC TANK
COMPOSITION AND SUE= 1200 GAL.CONCRETE
NEW OR EMSTING NEW
BL DRAINFIELD CROSS SECTION
DEPTH TO DRAINROCK BOTTOM
ROCK DEPTH BELOW PIPE- O-S"
SEPARATION FROM TRENCH BOTTOM TO IMPERMEABLE
MATERIAL/SEASONAL SATURATION= 12'-W
FILL DEPTH= 1.4F
TRENCH WIDTH= 3'-W
W.PUMP REQUIREMENT
DOSING VOLUME IN GALLONS= BD
NUMBER OF DOSES PER DAY= S
V.PRESSURE CALCULATIONS
USING PIPE CLASS 40
ORIFICE 113
APPROVE
JUL 3 12024
soNCQ
JNTV ENVIRONMENTAL HEALTH
Jew
5/1/24
'vitPr
''.L1!'NgTY1N'S:E4{'9�'
Il\1�0
24
LATERAL#1=
SQUIRT HEIGHT(FT)= 5.00
(NOTE 9p ORIFICE DISCHARGE RATE-(11]B)MORFICE O WdETER1503%
SO RWT OF(TOTAL PRESSURE HEAD)
ORIFICE DISCHARGE RATE- 0.41193
LATERAL LENGTH IN FEET= 40.00
ORIFICE SPACING= 3.0'
DISTANCE FROM END CAP= 7 0'
NUMBER OF HOLES= 13
LATERAL DISCHARGE RATE= 5.3%
LATERAL =
SQUIRT HEIGHT(FT)= 5.00
ORIFICE DISCHARGE RATE= 0.4110
LATERAL LENGTH IN FEET= 40.00
ORIFICE SPACING= T.
DISTANCE FROM ENO CAP= 2'P
NUMBER OF HOLES= 13
LATERAL DISCHARGE RATE= S.355
LATERAL 43=
SQUIRT HEIGHT(FT)= 5A0
ORIFICE DISCHARGE RATE= 0.4110
LATERAL LENGTH IN FEET= 40.00
ORIFICE SPACING= T w
DISTANCE FROM END CAP= 70
NUMBER OF HOLES= 13
LATERAL DISCHARGE RATE= 5.355
LATERAL iPo=
SQUIRT HEIGHT(FT)= 5.00
ORIFICE DISCHARGE RATE= 0.41193
LATERAL LENGTH IN FEET= 40A0
ORIFICE SPACING= T P
DISTANCE FROM ENO CAP= 7 v
NUMBER OF HOLES= 13
LATERAL DISCHARGE RATE= 5.30
LATERAL 45=
SQUIRT HEIGHT(FT)= 5.00
ORIFICE DISCHARGE RATE= 0.41193
LATERAL LENGTH IN FEET= 4D.00
ORIFICE SPACING= To,
DISTANCE FROM END CAP= 7 P
NUMBER OF HOLES= 13
LATERAL DISCHARGE RATE= 5.355
aPPROVKok
JUL 3 12024 Lf
MASON COUNTY ENVIRONMENTAL HEALTH
JBW
5/1/24
r S:q
Ead.HURTER
Y'dl'IFiI'.1'145'.�A_
LENGTH DIAMETER FLOW FRICTION LOSS
SECTION (FT) (IN) (GPM) (FT)
AS 75.00 2A0 20.775 0.9409
BC I.W 2.00 18.055 0.aM9
CD 1.00 2.00 10.710 0.0023
DE 20.00 2.00 5.355 0.0129
EF 40.00 1.25 5.355 0.1W7
TOTAL= 1.1S0'/
TOTAL HEAD LOSS
1)FRICTION LOSS THROUGH SYSTEM= 1.151
2)ELEVATION DIFFERENCE = 4.500
3)RESIDUAL = 5."
TOTAL 10.01
5/1/24 A PPROVE
JUL 3 12024
MASON COUNTYENVIRONMENigL p
B EALTH
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Yo. " W
ITY I'P,'Is=n
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MYERS ME3
Capacity liters per minute
0 50 100 150 200 250
40 12
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f/ T 30
yt
30 �Hp
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20 6
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0 10 20 a 50 60 70
Capacity gallons per minute
APPROVE
JUL 3 12024
MASON COUNTY ENVIRONMENTAL HEALT,
5/1/24
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