HomeMy WebLinkAboutSWG2023-00498 - SWG Application / Design - 11/27/2023 MASON COUNTY 415N6THELTON: SHELT967 ,EXT 400
SHELTON:STREET,SHELION,VEXT584
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: SWG2023-00498
APPLICANT David Parsons Phone: 925-628-8050
Address: 5630E Grapeview Loop Rd ALLYN, WA 98524
OWNER David Parsons Phone: 925-628-8050
Address: 5630 E Grapeview Loop Rd ALLYN, WA 98524
SEPTIC DESIGNER CINDY WAITE-Septic Designer Phone: 3607010205
Address: 80 E PICKERING LANE SHELTON, WA 98584
Site Address: 5630 E Grapeview Loop Rd
Primary Parcel Number: 121055000008
Permit Description: 3-bedroom OSCAR X02 system w/OS-50 coils: REPAIR
Permit Submitted Date: 11/27/2023
Permit Issued Date: 12/01/2023
Issued By: David Anderson
Current Permit Fees Paid: $780.00 (additional fees may be required upon installation of system).
Permit Expiration Date: 11/28/2024 (based on date of inspection)
Permit Conditions:
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 055.
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/environmentallonsiteloss-inspection-request.php or call:
360-427-9670, extension 400.
4 /r' `i^T MASON COUNTY „ • 11 c N
COMMUNITY SERVICES
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SWG 201- OV441 N o
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ON-SITE SEWAGE SYSTEM APPLICATION n A
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DAVID PARSONS 925-628-8050 z
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5630 E GRAPEVIOEW LOOP �t ALLYN WA 98524 s
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CINDY WAITE 36
0-701-02058
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AI RESIDENTIAL OSS h COMMUNITY OSS Ii COMMERCIAL 055 ❑ PRIVATE INDIVIDUAL WELL M. PRIVATE TLNO-PARTY WELL Z 01
Iv'EJ 4YORKy4-a..,x, n PUBL IC WAFER SYSI Ern .
FI NEW CONSTRUCTION UPGRADES RH'AIR 4FPLA CEMENT T . ..= a ❑ IAN E IX ATEA" _ I csi
0 SUR :INA SEW AGE ❑ EXISTING (LURE 0 SHORELINE
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71.I FSIGN FORM(REQUIRED' il SEPTIC DESIGN'REQUIRED _L T r
1-1 ✓IAIVERISI IIF APPLICABLE 3 116'x901xl4$'x829' o '
T. I
JTREC ;SITE AND'I SITE ONDI IONS ,e. ec
GO NORTH ON HIGHWAY 3, TURN RIGHT ONTO GRAPEVIEW LOOP ROAD TO o
ADDRESS. LONG DRIVEWAY. SOIL LOGS ARE BEHIND THE GARAGE/SHOP r 0
BUILDING. -1
to
SITE MUST BE FLAGGED FROM MAIN ROAD AND TEST HOLES MUST BE FLAGGED WITH TEST HOLE NUMBERS I CO
nLIH US i ONI Y HE OWTI IPA cVE
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SOIL CODES, L .JR,?AWIN(SO#STAI L ,Na-l(L
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THIS FORM MAY BE SCANNED AND AVAILABLE FOR PUBLIC VIEW ON THE MASON COUNTY WEBSITL
000e
DESIGN FORM-PACE ONE Assessor's Parcel Number 1 8 22 of A O c 9 g 4
A design will be reviewed when 3 conies of each of the following are whmitted:
'Completed design form that has been signed and dated. ' Scaled loom sketch_ including all applicable items on checklist
'Scaled plot plan, including all applicable items on checklist. '('roe -suction Sketch.including all applicable items on checklist.
This form may be scanned and available for public view on the Mason County Web site. Marinnen;paper-size. //".F F"
PARCEL IDENTIFICATION I
Permit Number: SWOtol3-009q Designers Name'. CINDY WAITE
Applicants Name: DAVID PARSONS Desf n r s Phone Number: 360-/01-0205
5630 E
Mailing Address: GRAPEVIEW LOOP 80 E PICKERING LAND wants Address:Dhln
ALLYN WA 98524 SIIELTON WA 95554
City State Lip Cilc Stale lip
DESIGN PARAMETERS - - ---- ---
'treatment Device - -
❑Glendon Biolilter 0 Sand Filter ❑ Nlound ❑ Sand Lined UrainUdd 0 kccircnP.nma Plan_ I ape:
❑ Aerobic Unit Make/Model ❑ Dis nt ciicu Unit Make Model _ Oilier X02 TO OSCAR
Drainfield Type
❑Gravity ❑ Pressure ❑Trench
❑ Bed ❑ Sub Surtace Drip
Septic Tank/Drainfield Specifications laterals
Number of Bedrooms 3 Schedule.C lass NETAFIM —
Daily Flow:Operating Capacity 270 gpd I.ength 35
li
Daily Flow: Design Flow 360 - gpd I)i:nneier in
Septic Tank Capacity(working) 1250 ROTH . gal Number 6
Receiving Soil Type(1-6) 5 Separation 5 Il
Receiving Soil Appl. Rate .4 ' gpd/1't' Orifices 2
Required Primary Area 900 tt' Dotal Number of Oriices 6X50=300.
Designed Primary Area 962 • tD Diameter EMITTER in
Designed Reserve Area VERY LIMITED It' Spacing 6 in
Trench/Bed Width 35 - Manifold
French/Bed Length 26-27 11-E- •hec e'Class SCHEDULE 40
Elevation Measurements 4tCn%tab, . 55+55 SUPPLYWRE TURN ii
Original Draintield Area Slope 5 / 61C 1 in
New Slope If Altered 8/ � P / thrift ai ou used? 0 Yes El NU
Depth of Excavation Up-slope 0 9 -gym is ‘ Transport Pipe
from Original Grade Down-slope Cif ore WARE
P . m 488188 2148815l(Rlzcs
Designed Vertical Separation 12 - in• rx�i ._�dp tti'
Il
Gravelless Chambers Required? ❑ Yes 0 No 0 Optional Diameter le
Pump Required? 0 Yes QIN° _ Dosing and Pump Chamber
Pump/Siphon Specifications Number ofdosesdu 360 7
Diff in Elevation Between Pump& Uppermost Orince 8 _R Dose quantity 75 gal V1
Draintield Squirt Height/Selected Residual (head) p C hn mho'Capacity(flood) 1200 gal ��
Uppermost Orifice ❑ Higher (if Lower than Pump Shutoff Pump controls Please check those required.
Capacity fat Total Pressure I lead gpm g I finer IgiElapse Meter fiiP.sent Co trier
Calculated Total Pressure(lead 10.51 f If Timer Pump on _ _ .Pump ulf_ _
,F Comments
7` AFTER CLEARING IS COMPLETED, INSTALLER AND DESIGNER TO MEET ON SITE TO LAY OUT DRAINFIELD.
CONCRETE TANKS REQUIRED. UTILITY PLUMBING TO BE TIED INTO THE NEW ON-SITE SYSTEM.
2 -? � 0 0-0o0
N' 2
DESIG FORM—PAGE TWO Assessor's Parcel Number: T 9 4'—Permit Number: SU'(I �3 - GO tig.
DESIGN CHECKLISTS
Scaled Plot Plan Scaled I,avant Sketch Cross-Section Sketch
1 Test hole locations m Drainfeld oriental ion and layout Reference depth from original grade:
0 Soil logs it 1nenchbed dimensions and i
21. Septic tank
Property lines critical distances within la}ont ¢1 Drainlield meet
❑ Existing and proposed wells Lb-Box/Valve box locations Reference depth from original grad,.
within 100 ft of property m Septic tank/pump chamber and reso'ieticc sigma:
❑ Measurements to cuts, banks, and locations
❑ Laterals. trench/bed.top and
surface water and critical areas firs Observation port location bottom
❑ Location and orientation of McClean-out location 0 Curtain drain collector
curtain drain and all absorption {7( Manifold placement ❑ Sand nugmcnlation
components 7"�
I�Orificc placenrc'ut Other cross-section detail:
0 Location and dimension of Observation xtrterclean-Dols
g Lateral placement with distance
primary system and reserve area to edge of bed
ii
Buildings Other Information
11 Audible/vixml alarm referenced Yes No
❑ Direction of slope indicator
m Scale of drawing shown on scale.„, Ig 0 Design staked out
Waterlines bar ❑ 0 Recorded Notices attached
3c.wiy 41 I 0 Roads, easements. driveways, ❑ 0 War Cr(s)attached
parking CI.
p g I 0 0 Pump curve attached
North arrow and scale drawing SW." ',cc*. r L1 e gf ❑ Evaluation of failure
shown on scale bar
(9 3a-110 Non-residential justification
❑ ❑ Waste strength
❑ ❑ Ilo)1
DESIGN APPROVAL
The undersigned designer must be notified by installer at time of installation g Yes ❑ No
C. _ _ _ tr{ 21 i 212.3 _
S ignatur of Designer I)ate
The undersigned has reviewed this design on behalf of Mason County Public I lealth and determined it to be in
compliance with state and local on-site ulations: 1 2-7
/ '7�/
Env ro ro menial I Specialist I( I / CV. je.
CAUTION: DESIGN APPROVAL IS VALID ONLY UNDER THE FOLLOWING CONDITION:
✓ The design is stamped"Approved'. 1, Mason Count' Public Health.
✓ The Onsite Sewage Permit has not expired.the Permit Expiration Date is: 1/ / ZK7ioz
✓ Drainfield site conditions have not been altered to adversely affect conditions of design approval. S
1.4Please 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.
I plated Date: 1217'20I5
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TABLE 2
Hydraulic Layout
OS-50 coils
Design Total # of Coils Dose Flush Excess
Flow Coils Lats. •erlat. GPM GPM TDH
240 4 4 1 1.4 7.8 50•
300 5 5 1 1.75 9.75 50'
360 6 3 2
450 8 - q
-___2_ 2.8 9.2 50
480 8 4 2 2.8 9.2 50'
600 10 5 2 3.5 11.5 50'
TABLE 3
• Hydraulic Layout
• OS-100 coils
Design Total # of Coils Dose Flush Excess
Flow Coils Lats. •er lat. • M ,6PM TDH
240 2 2 1 1.4 4.6
360 3 3 1 2.1 6.9
480 4 0
4 1 2.8
600 5 9.2 e°50'p
5 1 3.5 11.5 lc y)
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LICENSED DESIGNER
TABLE 4 t
Minimum Shoulder Lengths
OS-50
Design Flow Minimum Shoulder Length in
Feet
240 22.5
300 28
360 33.5
480 44.5
600 55.5
The dimensions in Table 4 represent the minimum required length of the outer
shoulder which include coils, spacing between coils, and shoulders. These lengths
can be extended to match site conditions. Minimum shoulder spacing and spacing l
between coils is 6 inches. See illustration below for example of shoulder length.
BASAL WIDTH
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F INISHED GRADE --------
24"RISERS WITH BOLL ON LIDS -
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CLEANOI/T
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MEN
- BAFFLE
CLARIFIED ZONE
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Treatment tank Discharge tank
luustration1: C �/ i 2_00 9 Leh u Y� 0,4Ie
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Introduction:
The OSCAR-X02 treatment system is comprised of two technologies: the X02(4
chambers: septic, aeration, clarifier, and pump chambers) and the OSCAR: drip tubing coils,
C-33 sand, reverse flush headworks, and control equipment.
Wastewater is collected in the septic chamber where gross solids are separated. The
waste stream is then aerated in the aeration chamber Aerated effluent passes through the
clarifier then into the pump chamber. The expected waste strength from the X02 will be 30
mg/I CBOD5 and 5 mg/I TSS. Effluent is dosed through a 120 mesh disc filter to OSCAR coils,
installed in ASTM C-33 sand. Effluent discharged from the coils is treated by the sand prior
to infiltrating into the receiving soil. The treatment level in the final discharge is expected to
reach 2 mg/I CBOD, 1 mg/I TSS, and 36 FC/100 ml, meeting Treatment Level A. The X02 can
only be used with the OSCAR.
Design:
Single family residence packages are designated as: 0SX02-240, OSX02.300,
OSX02-360, OSX02-450, OSX02-480, and OSXO2-600 and have the corresponding
design flows of 240, 300, 360, 450, 480, and 600 gallons per day. The OSX02-240 -
480 are standard packages. Design flows greater than 480 gallons per day are
considered custom and will require design assistance from Lowridge Onsite
Technologies, Inc. For the standard single family residence OSCAR-X02 package
parts list see the appendix. The X02 can only be used with OSCAR coils. All tanks
must be approved by Washington Department of Health as wastewater vessels.
The system can be designed in increments of flow up to 3500 gallons per
day. The OSCAR has different sizing criteria than the X02. The X02 is designed in
increments ranging from 500 to 3,500 gallons per day (for reference, see Table
1-2). The OSCAR is designed in increments of 62.5 or 125 gallons per coil per day,
depending on coil model (see Tables 2 and 3). Consequently, a design for a 7
bedroom system (840 gpd) could incorporate two 1750 gallon, two compartment
tanks plus an addition aerator (0)0+1 kit) with 14 OS-50OSCAR coils (875 gpd).
XOz:
The tanks for the X02 can be arranged in different formats. One option is to
use two double compartment tanks of the same size, either made of polyethylene
or concrete, with the following criteria:
Treatment Tank: The partition wall between the first and second
compartment of the treatment tank must have either a 4 inch by-pass hole or the
bottom of a tee baffle must extend down between 40% to 60% of the liquid depth
of the tank.
•
Discharge Tank: The partition between the first and second compartment of
the discharge tank must have a 4 inch by-pass hole located at least 18 inches
above the floor of the tank or no more than 27 inches between the bottom of the
by-pass hole and floor of the tank. Recommended hight of by-pass hole is 18
inches.
To determine the tank size for design flows greater than 500 gpd, the tanks
can be up size proportionally. Example:
Tanks for a 500 gpd design = 1,000 gallons
•
A 7 bedroom design (120 gpd x 7) is 840 gpd.
840 gpd/500 gpd - 1.68 or 68% increase
• '�9.4.
y e + - r tank size for 840 gpd = 1,000 gal. x 1.68 = 1,680 gallons
r: :rt, a 1750 gallon, two compartment tank can be used.
h�o=six
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L WIRES C5'.0.
For tanks with water tight, structurally sound partitions; for both the
treatment tank and discharge tank a double compartment tank with tee baffles
can be used (no flow through ports). Flip the discharge tank around so the smatter
compartment is first as shown (see Illustration 2). The clarifier chamber is to
remain full.
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Illustration � nrccyif 12eo gai-44 pod lc CA..,
Ay
As the daily design flow rates increase, larger tanks will be needed. It may
become necessary to have individual tanks for each chamber or a combination of
tanks to meet the volume requirements. For example:
3,000 gpd design flow (refer to Table 1-2).
Septic chamber = 4000 gal. needed, use a 3000 gal. tank + 1000 gal. tank.
Aeration Chamber = 2-1000 gat. tanks.
Clarifier chamber = 2- 1000 gal. tanks.
Pump chamber = 3000 gal. tank + 1000 gal. tank.
In this example, the septic chambers could be connected using standard tee
baffles making a two compartment chamber. The aerator chamber could be
arranged the same as the septic chambers. Half of the diffusors would be placed in
each 1,000 aeration chamber. The clarifier chambers could either use tee baffles
or be connected together below the liquid le The combined pump chambers
must be connected below the liquid level.
o N C ITN
LICE .ED DESIGNER0
F=L(Q/K0)^1.85
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 (1'SCHEDULE 40)
LENGTH 110
Q FLUSH GPM 6.2
K (1"SCHEDULEN 40) 47.8
FRICTION LOSS 2.51406
TDH 2.51406
TOTAL HEAD
FRICTION LOSS 2.51406
ELEVATION FROM PUMP
TANK TO OSCAR 8
TOTAL HEAD 10.51406 <50 EXCESS TOM
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•
Headworks: HWN-.7-RF
• % inches Arkal disc filter, mesh, 130 micron
• 3% inches Arad flow meter
• Three oil filled pressure gauges (0-100 psi)
• 5 Netafim normally closed solenoid valves (Model 80)
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OSCAR-X02 Parts list (500 gpd). �`�� vm
,p.I iA',3 p
Each OSCAR-XOz unit will include: Z3e '- i
• LF1P-RF-AR or LF1 P-RF-ARA control panel Z 3'r Nk• \
LOT-30, 1/2 hp, 120 volt pump �o C r R
• Hi-BlowAerator, HB-80 (80 liter/minute) "` -It
• Hi-Blow diffusers "'sr� 'c)` �s
• OS-50 or 05-100 Coils
• PVC fittings and drip tubing adapters
• HWN-.7-RF automatic headworks
• Solid % inches poly tubing for connections
• 2 float switches
OSCAR-X02 coil Connections
I • ...i. - .,.i.., : ..... . • -.-=';--il•
It9-7.4 :74197_ -
Manifolds and supply lines are 1 inches Sch 40 PVC
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Manifold and blank tech line adapter and connection.
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ct 4. 7.1.-69. .te • ''.. f c.: .5,W'VI
-•?:1:.10 .11V 14 ".atcatr r „e i, ,,•,,?c 7,4%
4.:11; Etk"rtyilillt7t ot t ' .1.titt:%,;111/4/6 1,',,-44%./.:4(knitiffiltri .- fiSt 4.itir 1,:f„
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to;a J.:,,,s,cm,x,,,475..v., q?pri. • i.,1:4 "e"
Blank tech liner and Bioline connection with internal coupling
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Inspection ports.
I +Screw Type Cap
or Slip Cap < Screw r)pe Cap
or Slip Cap
< 4" 1'%( Pipe
se--4" PVC Pipe I Length Varies)
(Length Varies)
14s 4" Long
I. Skits(4) a 90` Apart
•
< I filet Ring
t
4" PVC l'ee
•
OSCAR Cover Options.
There may be a desire to cover the OSCAR with something additional to the
specified ASTM C-33 sand. 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.
Options include:
• landscaping jute mat with grass seed or ground cover plantings
• a thin layer of mineral soil low in organic content (<10% organics)
• Thin layer of crushed or washed rock for wind erosion protection.
• Thin layer of bark to wood chips.
Do Not Cover C-33 Sand with:
• organic mix (manufactured top soil from compost)
• filter fabric
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Installation Notes
Oscar-X02 Treatment System
5630 E Grapeview Loop 12105-50-00008
1. The on-site septic system has failed plus laundry room has a direct discharge.
2. Stumps in the drainfield area must be cut down to ground level or below.
3. Installer and designer must meet on site prior to installation.
4. Oscar drainfield: ASTM C-33 sand media as per Washington Department of
Health's Recommended Standards and Guidance for Intermittent Sand Filter.
5. Trash tank,X02 tank and pump tank shall be concrete. Follow Illustrations 1 or 2 in the design
manual for tank configuration.
6. Properly decommission the existing septic tank.
7. Laundry room required to plumb into the new on-site system.
8. 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.
9. Minimum of 6" of sand throughout out the lateral area, must be level.
10. The tanks may be moved as necessary to accommodate building requirements.
11. Septic tank location must meet all required setbacks.
12. Keep wheeled vehicles off the drainfield area before. during and after installation.
13. Tracked equipment only
14. All ground, surface water and roof drains must be diverted away from the septic tanks
and drainfield.
15. Ensure the final grade slopes away from these areas and water doesn't collect on or
around them. Use swales, berms. catch basin and tight lines. curtain drains. etc to divert
all waters
16. Curtain drains can be no closer than 10' upgradient and 30' down gradient of the
drainfield
17. Exposed restrictive layers., cuts, banks, etc. can be no closer than 50' downhill from the
drainfield.
18. Install access risers on all tanks, valve box and ends of laterals.
19. Make sure septic tank risers are epoxied or caulked to cast in riser rings on tank.
20. Lids must form a water and gas tight seal with the access risers.
21. This system must be installed by a Mason County Certified installer.
22. Deviation from this design without prior approval from the designer and Mason County
Health Department will make this design null and void.
23. 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 da 's the operating capacity of
ninety gallons multiplied by 1.33. This results in a mini esign flow of one hundred
twenty gallons per day. This creates a surge factor of / anticipated flow is ninety
gallons per bedroom per day. - s°
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LICE OE GNER
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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 owner agrees 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 design operating capacity.
8. Leaky plumbing can hydraulic overload your on-site septic system
9. Keep waste strength at residential waste strength parameters.
10. Spread loads of laundry through the week.
11. Do not use excessive bleach or detergents with added whiteners.
12. Do not shower, do laundry and dishwasher at the same time
13. Antibiotics can kill or impair the biological process in the septic tank.
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