HomeMy WebLinkAboutSWG2023-00387 - SWG Application / Design - 9/13/2023 MASON COUNTY 415 N 6TH STREET,SHELTON,WA 99584
0 SHELTON:360-427-9670,EXT 400
BELFAIR'.360-275-4467,EXT 400
‘544 ,,e,_a "r Public Health & Human Services ELMA:360-482-5269,EXT 400
FAX:360-427-7787
On-Site Sewage System Permit: SWG2023-00387
APPLICANT COWAN SALLY G Phone:
Address: 6009 S 298TH PLACE AUBURN, WA 98001
OWNER COWAN SALLY G Phone:
Address: 6009 S 298TH PLACE AUBURN, WA 98001
SEPTIC DESIGNER CINDY WAITE-Septic Designer Phone: 3607010205
Address: 80 E PICKERING LANE SHELTON, WA 98584
Site Address: 30 N Hidden Cove Ln
Primary Parcel Number: 324242200080
Permit Description: 3-bedroom repair wl NuWater BNR500 system and OSCAR OS 50
coils
Permit Submitted Date: 09/13/2023
Permit Issued Date: 10/23/2023
Issued By: David Anderson
Current Permit Fees Paid: $780.00 (additional sees may be required upon installation of system).
Permit Expiration Date: 09/19/2024 (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/onsiteloss-inspection-request.php or call:
360-427-9670, extension 400.
C� . 1 ,_U,L . IL,
MASON COUNTY A • IS IN. Tn n
1.)611Mik COMMUNITY SERVICES 'LiL + • / `m m
PublicHealthc 11 - nirvENIILIE _ T� o v+
SWG 20/3- 001 h
Z N
ON-SITE SEWAGE SYSTEM APPLICATION a A
APPLICANT I
„_ I^ m
SALLY COWAN 206-369-6361 z
c
.Ai,INC ADDRESS smEE NTY.STA-L.ZIP CODE 3
6009 S 298TH PLACE AUBURN _ WA 98001 m
E PEERESS-STREET.Cry ZIP CODE - -
30 N HIDDEN COVE LANE LILLIWAUP WA 98555 I
J LIE GF DESIGNER
CINDY WAITE 360-701-0205
N;ME OF INSTALLER __...
TBD I o
N IN
a
1 fl PRO ILN I IgI RESIDENTIAL OSS hCOMMUNIrv055 {I COMFIER( L;AAA
wq IN SELL ❑ P4 TE J PAX"'W41 Z
VORn rv. H T LEAL.`MATER P YS I LI
h NEV CONSTRUCTION I LFGRADES IR REPAIR REPLACEMENT ' : - ---.i.. . . ❑ TABLE IX REPAID Iti
.- ❑ URA;.HG SF X P P ❑ES IS IIN -AL 11RP 0 SHOP EI INF
IN
A *DESIGN ORM)REEL RED: SEPTIC DESIGN IRECUIRELI ELI rr i r
0 AAI ER s- IF APPLICABLE) 3 " "T• - ° I
A IO:
OISE: 1CNE TO SITE ALL SiS IE LAN3111CHS Im (1,eo g v.,
GO NORTH ON US 101, TURN RIGHT ONTO HIDDEN COVE LANE, PARCEL IS ON Ic
THE RIGHT SIDE OF HIDDEN COVE LANE, SECOND PARCEL ON THE RIGHT. SOIL
LOGS ARE BEHIND THE RESIDENCE 5 I'
y kl
l )
SITE MUST BE FLAGGED FROM MAIN ROAD AND TEST HOLES MUST SE FLAGGED WITH TES'HOLE NUMBERS. -
OFDNADE FAILURE SOLRCE:Iq reourtvg pus)ses:
❑VOLUNTARY ❑MAIN I ENANCLiPUMPING 0 BUILDING PLPNII ❑,UPIL SAL_ ❑CE)f API AIN T ❑J➢IL: . SI I11 �
I-1:0- ZLI'' E6 L c Uf bre cooloatft.gyrmc 1
If?.oZ�wri �F��t / 65% grad i ,„tl
rs alp/It, woof rw r 29°
ti
54eStt Wif of �81I
SOIL CODES
o GIAvELLY s I L=LLZOA ZZ
THhP� �FORM AY BE BOPN��NB AVAILABLE FOR PUBLIC VIEW ON THE M --- s IT N P is;IL
/��1T��3
MASON COUNTY WEBSTE
DESIGN FORM—PAGE ONE Assessor's Parcel Numher3a,2 Y 1 Y —Z Z _ (ZQQ iU
A design will be reviewed when 3 copies of each of the following are submitted:
°Completed design Ibrm that has been signed and dated. Scaled Payout sketch, including all applicable items an checklist
r Scaled plot plan, including all applicable items on checklist. .Cross-section sketch. including all applicable items on cheeklisi.
This form may be scanned and available/or public view on the Mason County Web site.Masimam paper.sire //".f 17
PARCEL IDENTIFICATION
Permit Number: SWG 2013- 0038? Designer's Name: CINDY WAITE
Applicant's Name: SALLY COWAN Designer's Phone Number: 360-701-0205 -
Mailing Address: 6009 S 298TH PLACE _. l)esianzr's Address: 80 E PICKERING LANE
AUBURN WA 98001 SHELTON WA 98584
City State lip City
State 7ip
DESIGN PARAMETERS •
Treatment Device
❑Glendon Biofilter 0 Sand Filter ❑ Mound ❑ Sand Lined De,intield 0 Recirculating Filter,iypc:
L9'Aerobic Unit Make/Model BNR 500 0 Disinfection Unit Mnke'.Model Other OSCA OS 50 COILS
Drainticld Type ---- - --
❑Gravity 0 Pressure 0 I rench 0 Bat
BSsub Surface Drip
Septic Tank/Drainfield Specifications Laterals
Number of Bedrooms 3 Schnlulc•Clltss NETAFIM (
Daily Flow: Operating Capacity 270 gpti Length 50 ([
Daily Flow: Design Flow 360 gpd Diameter 60X60 in
Septic Septic Tank Capacity(working) tone TRASH&ENR SOD gay- Number 8
Receiving Soil Type(I-6) 4 j Separation .5 ft
Receiving Soil Appl-Rate .6 gpd/flu Orifices
Required Primary Area 600 ,
R- Total Number of Orifices 50X8=400
Designed Primary Area 645 ft'-/ Diameter EMITTER
n
Designed Reserve Area 600 EC Spacing 12
in
Trench/Bed Width
14.5 f- Manifold
Trench/Bed Length 45
it Schedule lass SCHEDULE 40
Elevation Measurements Length 60'SUPPLY 60 RETURN /I
Original Drainticld Area Slope 5-6 .t, Diameter 1 in
New Slope. IfAlmred ,i %1
.t, PreFc,'md ,mmilidd I1 ration used? 0 Yes 0N0
Depth of Excavation up-sImp` 0 in i 10
from Original nspori Pipe
ymal Grade Down-slope ���? . P P
0 in Schedule{'lass/e 11 1
AlfDesigned Vertical Separation -nit a „ � ,A IJ, '
�1i in Lrnmh oAv . ",.) -_,1 ft
Gravelless Chambers Required? 0 Yes 0 No 0 Optional Diameter r �4, ,slat
In
Pump Required? eYcs 0 No i6. 1r' 1 ' •� ;
c Sgp t..4i* K TI Chamber
Pump/Siphon Specifications NLiili('ofdo es a n & 11�60
Dill in Elevation Between Pump& Uppermost Orifice 10 It 'l a i� — — "'
Dose q millli :EXPIRES osac' .75 gel
Draintield Squirt Height/Selected Residual(head) it Chamber Cap;4city(flood) 1200 gal
Uppermost Orifice etliglier O Lower than Pump Shulofr Pump control,: Please check l hose required.
Capacity(¢'Total Pressure Head 2.8 gpm erintcii gilnpsc Meter 0 livent Counter
Calculated Total Pressure Head 17.754 p If Timer: Pehtp on ;;6 EC pump off 3 MN 44 SEC '
Comments ' 4
9�((( 0 VED
CONCRETE TRAFFIC RATED TANKS REQUIRED, ` '\\b
Gel23 20?3 \
vrrEv/Ia30N2m raLHEALTH
!J4
DESIGN FORM—PAGE TWO Assessor's Paiuel Numbee3 J Y a `/ -- 2 Z -- 212 0 0 -0
Permit Number: SW(i
DESIGN CHECKLISTS
Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch
)21 Test hole locations % Drainficld orientation and layout Reference depth from original grade:
Soil logs j?I Trench:bed dimensions and
Septic tank
121
Property lines critical distances within layout g Dra infield cover
igktE✓xisling and proposed wells D-Box/Valve box locations Reference depth from original grade
within 100 ft of property 2 Septic tank pump chamber and restrictive strata:
Measurements to cuts,banks,and locations p lc/ "cf
Ioterals, trench:bed. lop and
surface water and critical areas 0 Observation port location bottom
{ovation and orientation of J21 Clean-out location 0 Curtain drain collector
curtain drain and all absorption ❑ Manifold placement 0 Sand augmentation
components
g Orifice placement Other cross-section detail'
Location and dimension of `� Observation ports/clean-outs
gi Lateral placement with di.mncc
primary system and reserve area In edge of bed
kJ Buildings Other Information
,
0 Direction of slope indicator ScaeAudible/visual alarm re oe iene Yes No
g Scale ofdrawing shown on scale Er 0 Design staked out
RI Waterlines bar 0 0 Recorded Notices attached
p. Roads,easements,driveways, 0 0 Waivents)attached
parking 0 lEr Pump curve attached
�y
YC North arrow and scale drawing C „�. ' // -❑ ❑ Evaluation of failure
shown on scale bar )
I'Ir. ✓- Non-residentiel justification 0 0 Waste strength
❑ ❑ Plow
DESIGN APPROVAL
The undersigned designer must be notified y I sstaller it time of installation Ig Yes 0 No
•r7 statics
as ii_ CV t(/7/TZ, p
Signature oft)signer Date r,p Pp,1�
The undersigned has reviewed this design on behalf of Mason County Public Health and determined it to he in' %Veo
compliance with state and local on- c gulations: �ri7
M/Z3/7172 3 'oz3
Environmental Health Specialist ate
CAUTION: DESIGN APPROVAL IS VALID ONLY UNDER THE FOLLOWING CONDITION:
V The design is stamped"Approved" by Mason County Public Health.
✓ The Onsitc Sewage Permit has not expired. the Permit Expiration Date is: _.rl l 71z y •
✓ Drainfteld 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.
f`i
An Installation Fee is required.
This form may be scanned and available for public view on the Masan County Web site.
I Updated Date. 12:7/2015
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OCT 2 3 2023 jot DR EaTE \ , ` `�
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ExwkES 05/I0?
F=L(Q/KO)A1.85
CALCULATION
F=friction loss through pipe I feet of head DO NOT CHANGE
L=length of supply line in feet FILL IN
Q=Flush GPM
K=47.8 (11 SCHEDULE 40)
LENGTH 100
Q FLUSH GPM 12
K (1' SCHEDULEN 40) 47.8
FRICTION LOSS 7.75432
Elevation difference 10
TDH 17.75432
TOTAL HEAD
FRICTION LOSS 17.75432
ELEVATION FROM PUMP
TANK TO OSCAR
TOTAL HEAD 17.75432 <50 EXCESS TDH
GMP DISCHARGE AT DF
EMITTER GPH 0.42 .42 GALLONS PER EMITTER
MINUTES PER HOUR 60
if EMITTERS 50
U COILS g
GPM PER COIL 0.35
GPM PER TOTAL COILS 2.8 4 P
DOSE VOLUME Pp
DOSE
epi
GPM PER COIL 0.35
COILS414c �nT
SECONDS IN MINUTES 8 UN�C N �3202
60 ryFti 3
SECONDS ON 16 ]Rojo
GALLONS PER DOSE 0.75 4 MFNT 44,y,
CALCULATION
TIMER SETTING DO NOT CHANGE
TIMER SETTINGS GPD 270 FILL IN
GP DOSE 0.75
DOSES PER DAY 360 % 1
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RETURN LINE
2'PVC •
' III TRASH CHAMBER a DIGESTER CHAMBER I CLARIFIER I
OPERATING CAPACITY:417 GALLONS ' OPERATING CAPACITY 421 GALLONS
FLOOD CAPACITY 490 GALLONS CHAMBER
FLOOD CAPACITY,494 GALLONS IfiR GALLONS
65' 58' �._. IR000.191 GAL
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A 1/e, Q• DIFFUSER BARS(2) r`, 12
e 1 PARALEL TO TANK WALL
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- LICENSED D SIGNER �, OR COMPACTED SAND 1J,p 007
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INSTALLATIO '11L2,', 1 i:W:a�%�._ ` In "-�1 OVER STONY SOIL SQ3,° , d
1)Excavate tank hole with vertical walls to 1Lfoot larger than L� .
tank on all sides. 1
rY
1423
2)If bottom of hole is stony,install 3'of compact sand&level " —
—
- - — a'- —.----
/RO
2 __ 7a N.y`cNI
outwtlsankI - �9
3)Install tank In center of hole,keeping 1 ft.mid space on i - //
all sides. l 21'etoweR rF
4)As tank Is filling with water,fill in void space with compact i<'RISERS l'n'PI HOUSING CAS
granular(sandy)soil free of large clumps of clay. 7 \ Our T oP OF LI
5)Install rest of system,&affix risers to adapters with / \ /
waterproof adhesive. — I / — _
6)Perform watertightness test in field as required by local � / 1 ] a+e'
Jurisdiction. /. \ A / I '
7)Upon approval to backfill.Carefully backfill with native /1z'RISER_�
soils over top of tank. TRASH CHAMBER I DIGESTER '21d6/fJEB
8)Final grade the surface to avoid chanelling surface
water toward tank. r\ STOP VIEW
BM1. \
�. , AEROBIC TREATMENT TANK DETAIL FOR
/�viiii ,`�4 NuWATER BNR-500 TREATMENT UNIT
le ENVIRO-FLO, INC. RFaSED
rAr' Wastewater Treatment Technologies •
3/01/12
'..�'r"""a _ P.O. BOX 321161, Flowood,M$39232
(877)836-8476 (601)845-4716 fax SCALE
www.enviro-ffo.net 1" = 1.4 R.
RECYRE3)AO WITH GAS:ART SEAL
SECURED
THREADED UNION
21'DIAMETER
MIENACCESS RISER
GRADE .. _F—_ SERVICE
' VALVE•
FRGYSEPN6 \\T��I� 6u /I i- / /ICI I�
TANK { iIs
•
EMEROENOY STORAGE
ANTI SIPHON
HIMWATNI AWIY LEVELVALVE•
WORKING VOLUME INOSPENDENT
NORMALTMIFROFF LEVEL FLOAT STEM
ENCLOSED PUMPW I FOR FLOAT
SEDIMENTSNRD• l I MOUNTING
CHEM VALVE•
nimarimena
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SEDIMENTS 1 IMMERSIBLE
CENTRIFUGAL
PUMP
Pll11PSHAMBER
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EN1'iHES JSry. OCT
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Headworks: HWN-.7-RF
• '/<" Arkal disc fitter, mesh, 130 micron
• ''/e" Arad flow meter
• Three oil filled pressure gauges
• 5 Netafim normally closed throttling solenoid valves
OSCAR-II Parts list.
Each OSCAR-II unit will include: A �y
• LF1P-RF-BLWRR control panel PEN®V
• 1/2 hp, 30 gpm Lowridge Onsite Technologies • \ ED
pump
• 05-50 or 05-100 Coils OCT 3 2073
PVC fittings and dri
• HWN-.7-RF automatic headworketers• �FgLti=��hrY tubing adap
p0JQCN,iLHTA(HEAIrp
• Solid Y" poly tubing for connections
• 2 float switches iy
i
i
•
t01 •E 11
OSCAR 11 coil Connections j ��Pt,a, ,;1, I
i 5t is //,,
of c v WAITS II SED ESIGNER
Manifolds and supply lines are 1" Sch 40 PVC
V.IX/46
'J1 L r .
� L
1 , 1
i L.
Manifold and blank tech line adapter and connection.
f, poi t
\ho.
II t..:
r it ppi,� ry 1 .
YX'y Yj l+ t a e a
V >f A f 1. ; A !I
L• # 1E .3 t L A
4 sGV ,. L r� �.+ 5? 5J Nr 101
Blank tech liner and Bioline connection with internal tPpU sEo ues GNER t
Inspection ports.
EScrew Type Cop < Screwi)pe Cap " `PPR0 60
or Slip Cap
or Slip Cap
< 4" PccPipe OCT 232023
< 4" PVC Pipe(Length Varies) (Length Varies) KASJ,N COjytt ENVIRONMENTAL HE
I/4s 4" Long n14 A_Ti
4 SIats(4)/a 90• Apart
< l oilet king
4" PVC Tee \�
\ L\
OSCAR-II Cover Options.
There may be a desire to cover the OSCAR with something additional to the
specified ASTM C-33 sand. Options include:
• landscaping jute mat with grass seed or ground cover plantings
• a thin layer of mineral soil low in organic content (<10% organics)
Do Not Cover C-33 Sand with:
• organic mix (manufactured top soil from compost)
• filter fabric
The intent is not to have too much additional cover over the final C-33 sand
layer. Placing too much cover will inhibit plant root growth. Because the C-33 sand
is sub-surface irrigated, grass and other ground cover will grow rapidly, forming a
firm protective cover over the OSCAR. At the end of the first growing season the
C-33 sand layer will be as firm as native soil to walk on.
On a standard mound system, where soil cover is required, the soil cap can
dry out in the summer months requiring additional irrigation to maintain
vegetative cover.
Cold Weather Options.
In colder climates (eastern Washington) it may be necessary to prevent
freezing in the OSCAR-II headworks. This is especially true with vacation homes
where the houses are vacant in the winter and all power is turned off. In these
situations Lowridge recommends allowing the internal portion of the HWN-.7-RF
headworks to drain between doses. All reverse flush headworks incorporate tJ�e
cold weather features. °`1 P^�
oIc`T, ?oVFD
3e 9
e d s W
ti
5 1Cn 16 V/�}
0 DVE WAITE `
LICENSED DESIGNER
EAVIRLS t1,i9
Installation Nojtes
Nuwater BNR500 to an Oscar Distribution
32424-22-00080 30 N Hidden Cove
This is a failure, drainfield is filled with roots and deep into the original soil. We
are installing a three conforming primary and reserve drainfield.
1. Installer and designer must meet on site prior to installation.
2. Oscar drainfield: ASTM C-33 sand media as per Washington Department of
Health's Recommended Standards and Guidance for Intermittent Sand Filter.
3. Order NuWater-o kit that does not come with control panel, control panel comes
with Oscar Kit to serve both the NuWater and the Oscar
4. The prepared site plan is not a survey. It's the owner's responsibility to verify property
lines, utility lines (water, sewer, power, phone and gas) prior to installation.
5. Minimum of 6" of sand throughout out the lateral area, must be level.
6. Tanks should be traffic rated.
7. The tanks may be moved as necessary to accommodate building requirements. Septic
tank location must meet all required setbacks.
8. Keep wheeled vehicles off the drainfield area beforg, during and after installation.
Tracked equipment only,
9. All ground, surface water and roof drains must be di erted away from the septic tanks
and drainfield. Ensure the final grade slopes away f om these areas and water doesn't
collect on or around them. Use swales, berms, catc basin and tight lines, curtain drains,
etc. to divert all waters.
10. Curtain drains can be no closer than 10' upgradient and 30' down gradient of the
drainfield ��_
11. Exposed restrictive layers, cuts, banks, etc. can be no closer than 50' dowhhil �r
drainfield. AAA'`®
12. Install access risers on the septic tanks and control box. OCT VFD
13. Make sure septic tank risers are epoxied or caulked to cast in riser rinafeaRtank. 23 20P3
14. Lids must form a water and gas tight seal with the access risers oOtry c- ^V
15. This system must be installed by a Mason County Certified installer. N,g
16. Deviation from this design without prior approval from the designer and Mason County Eh AI Hp417;si Health Department will make this design null and void.
17. This design was sized per Washington Administrative CodeWAC246-272A-0230. The
operating capacity is based on 45 gallons per day per capita with two persons per
bedroom. The minimum design flow per bedroom per day is the operating capacity of
ninety gallons multiplied by 1.33. This results in a minimum design flow of one hundred
twenty gallons per day. This creates a surge fact i 33% but anticipated flow is ninety
gallons per bedroom per day.
e 61
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LICENSED DESIGNER
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System Owner Responsibilities:
1. Operation and Maintenance is required by Washington State Department of Health and
Mason County Health Department.
2. The septic tank and pump tank should be pumped every three to five years or as
needed.
3. System owners are responsible for having maintenance performed annually.
4. System owners are responsible for responding to septic issues in a timely manner.
5. System owners shall not at any time change or alter settings in the control box.
6. System owners agree to read and abide by information regarding their system in the
User Manual provided by Mason County Public Health.
7. Keep the flow of sewage at or below the approved dlesign operating capacity.
8. Keep waste strength at residential waste strength parameters.
9. Spread loads of laundry through the week.
10. Do not use excessive bleach or detergents with added whiteners.
11. Do not shower, do laundry and dishwasher at the same time
12.Antibiotics can kill or impair the biological process in the septic tank.
13. Leaky plumbing can hydraulic overload your on-site septic system.
MASON OCT 2 3 2023
couNN ENO.
ON"dEN'
DJA I AL HEALTH
45' ♦�
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V E AITE
LICENSED DESIGNER
IXPIHES 0010