HomeMy WebLinkAboutSWG2023-00054 - SWG Application / Design - 2/27/2023 1,•nci A
MASON COUNTY 415 N 6TH STREET,360-427 967 ,E 98584
SHELTON:TREE ,S 42TON, EXT 400
BELFAIR:360-275-4467,EXT 400
u <) Public Health & Human Services ELMA:360-482-5269,EXT 400
FAX:360-427-7787
On-Site Sewage System Permit: SWG2023-00054
APPLICANT BROWN ROBERT MAX &JULIET Phone: (530)400-7878
ALYCE
Address: 12026 180TH AVE CT NW GIG HARBOR, WA 98329
OWNER BROWN ROBERT MAX &JULIET Phone: (530)400-7878
ALYCE
Address: 12026 180TH AVE CT NW GIG HARBOR, WA 98329
SEPTIC DESIGNER KEVIN HUGHES-septic designer Phone: 253-256-5486
Address: 4015 104th Ave SW OLYMPIA, WA 98512
Site Address: 40 E Tahuya Dr
Primary Parcel Number: 220075100055
Permit Description: 3-bedroom NuWater BNR500 system
Permit Submitted Date: 02/27/2023
Permit Issued Date: 03/06/2023
Issued By: David Anderson
Current Permit Fees Paid: $780.00 (additional fees may be required upon installation of system).
Permit Expiration Date: 03/03/2026 (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 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/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.
OFFICIAL USE ONLY
DATE RECEIVED: 1 • t� '
7- `��t- MASON COUNTY D
COMMUNITY SERVICES ^M` '' 1 RLCEIVEJ • 0 m
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Public Health(Community Health/Environmental Health)
360�a77-9670,ext.400 or 360-275-aa67,ext.400 3- D��it O
at 5 N.6th Street-Shelton WA 98584 SWG 2.6
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NAMF OF INSTALLER PH E 0
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PERMIT TYPE(select on>e DRINKING WATER SOURCE - I
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PRESIDENTIAL OSS h COMMUNITY OSS in COMMERCIAL OSS FI-PRIVATE INDIVIDUAL WELL ff PRIVATE TWO-PARTY WELL Z
TYPE OF WORK(select one) 7 PUBLIC WATER SYSTEM I
KNEW CONSTRUCTION/UPGRADES F REPAIR/REPLACEMENT OTHER DETAILS(select all that apply) ❑ TABLE IX REPAIR
SUBMITTALS 0 SURFACING SEWAGE 0 EXISTING FAILURE 0 SHORELINE w I -J
ESIGN FORM(REQUIRED) SEPTIC DESIGN(REQUIRED) BEDROOMS LOT SIZE0
5-WAIVER(S)(IF APPLICABLE) 3 / 3 0 I I
DIRECTIONS TO SITE AND SITE CONDITIONS(exAC
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SITE MUST BE FLAGGED FROM MAIN ROAD AND TEST HOLES MUST BE FLAGGED WITH TEST HOLE NUMBERS. I Ill,
OFFICIAL USE ONLY BELOW THIS LINE
UPGRADE I FAILURE SOURCE(for reporting purposes)
0 VOLUNTARY 0 MAINTENANCE/PUMPING ❑BUILDING PERMIT ['HOME SALE OCOMPLAINT 0 OTHER.
INSPECTOR SOIL LOGS COMMENTS/CONDITIONS
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RECORD DRAWING AND INSTALLATION REPORT
SOIL CODES:
V=VERY G=GRAVELLY S=SAND L=LOAM Si=SILT C=CLAY E=EXTREMELY R=ROOTS REQUIRED FOR FINAL APPROVAL.
INSPE SIGNATURE DATE APPLICATION EXPIRATION DATE APPLICATION APPROVED/ISSUED BY DATE
si/- /2 C'l 6.
THIS FORM AY BE SCANNED AND AVAILABLE FOR PUBLIC VIEW ON THE MASON COUNTY WEBSITE REVISED 12/7/2015
• • .
SEPTIC DESIGN REPORT
6-0,40
RESIDENCE
—ONSITE SEWAGE DISPOSAL SYSTEM—
APPLICANT: SITE ADDRESS:
Akita Cove Construction 40 E Tahuya Dr
(Robert&Juliet Brown) Shelton,WA 98584
12026 180th Ave Ct NW Parcel#: 220075100055
Gig Harbor, WA 98329
530-400-7878
DESIGNER:
Kevin Hughes, PE
4015 104th Ave SW
Olympia,WA 98512
(253) 256-5486
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l<(` 45227 � 4/ APPROVED
MAR 0 6 2023
DATE: October 27, 2022 MASON COUNTY ENVIRONMENTAL HEALTH
"I certify this design meets all rules and regulations of DJA
Washington State Department of Health and Mason
County Health Department."
REPORT CONTENTS
PROJECT SPECIFICATIONS AND CALCULATIONS
DESIGN FORM—PAGE ONE Assessor's Parcel Number: 2 0 0 7 — 5 1 — 0 0 0 5 5
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 ma be scanned and available for public view on the Mason County Web site. .tlaximum aper size: II-X/""
ARCS :K�
• Permit Number: SWG _ Designer's Name: Kevin Hughes
Akita Cove Construction Designer's Phone Number: 253-256-5486
Applicant's Name: — - ---
Mailing Address: 12026 180th Ave Ct NW Designer's Address: 4015 104th Ave SW
Gig Harbor WA 98329 Olympia WA 98512
City State Zi• Cit State Z j
,w�tW l s� ,wN' 1;.;„ .va`t�`r ^P S .r r. s:Yk 7' ., M rp._'� , ` .k `f; .#.�." a,y 5 „k s ��. },$t.�
Treatment Device
1 ❑Glendon Biofilter 0 Sand Filter 0 Mound 0 Sand Lined 1)rainlield 0 Recirculating Filter.Type:
DcAerobic Unit Make/Model NuWater BNR500 ❑ Disinfection l nit Make/Model Other:
Drainfield Type
❑Gravity Iii'Pressure 'Trench 0 Bed 0 Sub Surface Drip
Septic Tank/Drainfield Specifications Laterals
Number of Bedrooms 3 Schedule/Class SCH.40
Daily Flow:Operating Capacity 360 gpd Length 37.5 ft
Daily Flow:Design Flow 360 gpd Diameter 1.25 in
Septic Tank Capacity 1200 gal Number 4
Receiving Soil Type(1-6) 3 Separation
6 ft
Receiving Soil Appl. Rate .8 gpd/ft2 Orifices
Required Primary Area 450 ft'- Total Number of Orifices 40
Designed Primary Area 450 ft2 Diameter 3/16 in
Designed Reserve Area 675 ft2 Spacing 48 in
TrenchBed Width 3 ft Manifold
Trench/Bed Length 150 ft Schedule/Class Sch 40
Elevation Measurements Length See Plan ft
Original Drainfield Area Slope 12 % Diameter 2 in
New Slope. If Altered n/a % Preferred manifold configuration used? 0 Yes ❑No
Depth of Excavation Up-slope 33 in Transport Pipe
from Original Grade Down-slope 29 in Schedule/Class Sch 40
Designed Vertical Separation 12 in Length 15 ft
Gravelless Chambers Required? 0 Yes 0 No Elf Optional Diameter 2 in
Pump Required? lg Yes ❑No Dosing and Pump Chamber
Pump/Siphon Specifications Number of doses/day 4
Difference in Elevation Between Pump Shutoff and C!ppermost Dose quantity 90 gal
Orifice '5 ft Chamber Capacity 1000 gal
t Ippermost Orifice el Higher 0 Lower than Pump Shutoff Pump controls: Please check those required.
Capacity @ Total Pressure Head 23.6 gpm Timer ❑Elapse Meter G�Event Counter
Calculated Total Pressure Head 7T3___, ft H If Timer: 48 sec. tidy 6 hrs
Comments
MAR 0 6 2023
MASON COUNTY ENVIRONMENTAL HEALTH
DJA
DESIGN FORM—PAGE TWO Assessor's Parcel Number:2 2 0 0 7 — 5 1 -- 0 0 0 5 5
Permit Number: SWG
DESIGN CHECKLISTS
Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch
til Test hole locations fif Drainfield orientation and layout Reference depth from original grade:
Eg Soil logs It Trench/bed dimensions and Gt Septic tank
6d Property lines critical distances within layout 121 Drainfield cover
91 Existing and proposed wells Eg D-Box/Valve box locations Reference depth from original grade
within 100 ft of property 6g Septic tank/pump chamber and restrictive strata:
fig Measurements to cuts.banks,and locations li?! Laterals,trench/bed,top and
surface water and critical areas 6d Observation port location bottom
0 Location and orientation of 21 Clean-out location 0 Curtain drain collector
curtain drain and all absorption It Manifold placement 0 Sand augmentation
components 6d Orifice placement Other cross-section detail:
Ig Location and dimension of Lateral placement with distance It Observation ports/clean-outs
primary system and reserve area to edge of bed Other Information
10 Buildings lig Audible/visual alarm referenced Yes No
6Q Direction of slope indicator EitiScale of drawing shown on scale 0 Ct Design staked out
10 Waterlines bar 0 [if Recorded Notices attached
Eg Roads,easements,driveways. 0 [tf Waiver(s)attached
parking Cif ❑ Pump curve attached
121 North arrow and scale drawing ❑ ritf Evaluation of failure
shown on scale bar Non-residential justification
❑ 0 Waste strength
❑ 0 Flow
DESIGN APPROVAL
The undersigned designer must be notified by installer at time of installation 0 Yes alNo
z 0 /.., ko(L7/zz
Signature o 7 Designer Date //��
The undersigned has reviewed this design on behalf of Mason County Public Health and detertflfiied it
compliance with state and local on- ' e regulations: VE
AV/7 1/3rnz3 PRO
1AR 0 6 2023
Environmental ealth Specialist Date MASON COUN
CAUTION: DESIGN APPROVAL IS VALID ONLY UNDER THE FOLLOWING CONDITION)JA NMfNTALHEALT,'
✓ The design is stamped"Approved"by Mason County Public Health.
✓ The Onsite Sewage Permit has not expired.the Permit Expiration Date is:
✓ 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
Team Hughes Engineering October 2022
40 E Tahuya Dr Septic Design
PROJECT SPECIFICATIONS AND CALCULATIONS
PROJECT DESCRIPTION
This project includes the installation of a new 3 bedroom septic system utilizing an aeration treatment
septic tank, pump chamber and a pressure distribution drain field.
PROJECT DETAILS:
-NUMBER OF BEDROOMS 3
-SOIL TYPE 3
-APPLICATION RATE 0.8
-GALLONS PER DAY 360
-SYSTEM TYPE PRESSURE DISTRIBUTION
-TREATMENT LEVEL B
SEPTIC TANK:
REQUIRED SIZE 1,200 GALLONS MIN. (BNR 500)
PUMP CHAMBER:
WORKING VOLUME(100%DV) 360 GALLONS
EMERGENCY VOLUME(75%DV) 270 GALLONS
DEAD VOLUME(SUBMERGED PUMP) 370 GALLONS
CAPACITY NEEDED 1000 GALLONS MIN.
REQUIRED SIZE 1,000 GALLONS MIN.
DRAINFIELD DESIGN:
-TYPE Trench
-DEPTH TO ABSORPTION AREA 33 INCHES MAX. (upslope side)
-TRENCH WIDTH 3.0 FEET
-TRENCH LENGTH 150 FEET
-TOTAL REQ.ABSORPTION AREA 450 SQUARE FEET
-DESIGN ABSORPTION AREA 450 SQUARE FEET MASON��'JNTY ENWRONMENTAL CHEALTI
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Team Hughes Engineering October 2022
40 E Tahuya Dr Septic Design
SYSTEM PARAMETERS PRESSURE CALCULATIONS
Number of Laterals 4 Orifice Discharge Rate 0.59 gpm
Lateral 1 Length 37.5 feet Number of Orifices Lateral 1 10
Lateral 2 Length 37.5 feet Number of Orifices Lateral 2 10
Lateral 3 Length 37.5 feet Number of Orifices Lateral 3 10
Lateral 4 Length 37.5 feet Number of Orifices Lateral 4 10
Lateral 5 Length feet Number of Orifices Lateral 5
Lateral 6 Length feet Number of Orifices Lateral 6
Total Lateral Length 150 feet Total Discharge Rate 23.6 gpm
Lateral Line Size 1.25 inches
Pipe Class SCH.40 FRICTION LOSS
Highest Lateral Elevation 184.00 feet Transport Line Loss 0.1 feet
Feeder Pipe Loss 0.5 feet
Orifice Size 3/16 inches Lateral Pipe Loss 0.9 feet
Orifice Spacing 48 inches Fittings Loss (10%of Total) 0.2 feet
Total Number of Orifices 40 Total Head Loss 1.8 feet
Residual Head at Last Orifice 2 feet
DYNAMIC HEAD
Total Feeder Pipe Length 40 feet Residual Head at Last Orifice 2.0 feet
Feeder Pipe Size 1.25 inches Elevation Difference 3.5 feet
Pipe Class SCH.40 Friction Head Loss 1.8 feet
Control Box Elevation 185.00 feet Total Dynamic Head 7.3 feet
Transport Line Length 15 feet PUMP SIZING CRITERIA
Transport Line Size 2 inches Total Discharge Rate 23.6 gpm
Pipe Class Sch 40 Total Dynamic Head 7.3 feet
Pump Elevation 182.50 feet Use Hydomatic SHEF-40
Pump Outlet Elevation 186.00 feet or approved equal
Max System Elevation Head 3.50 feet (see Septic Drawings for pump specs)
DRAIN DOWN CALCULATION (7x's RULE)
Orifice Orientation 3 &9 o'clock
Transport Line Volume to Drain 0 APPROVED
Feeder Pipe Volume to Drain 0
Lateral Pipe Volume to Drain 13.8 MAR 0 6 2023
Total Volume 13.8
Dose Volume 90 MASON COUNTY ENVIRONMENTAL HEALTH
6.52 times Drain Down Volume DJA
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