HomeMy WebLinkAboutSWG2026-00143 - SWG Application / Design - 5/8/2026 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: SWG2026-00143
APPLICANT MPM VENTURE GROUP LLC Phone: 253-225-2808
Address: 110W K ST, SUITE C SHELTON, WA 98584
SEPTIC DESIGNER CHRIS ELSTROTT* Phone: 360-561-5000
Address: 128 NORTH RIVER STREET MONTESANO, WA 98563
Site Address: E Eagle Point Dr
Primary Parcel Number: 421227690094
Permit Description: 4BR sand lined pressure bed
Permit Submitted Date: 05/08/2026
Permit Issued Date: 05/26/2026
Issued By: Jeff Wilmoth
Current Permit Fees Paid: $845.00 (additional fees may be required upon installation of system).
Permit Expiration Date: 05/20/2029 (based on date of inspection)
Permit Conditions:
I Approval of this septic permit does not approve the building location. Building location is
subject to approval from all applicable departments and regulations.
2 Proposed development subject to zoning requirements and approval by the planning
department staff per Mason County Title 17.
3 Permit must be installed by a Mason County Certified Installer unless prior written
authorization from Mason County is obtained.
4 Drain field installation not to exceed designed upslope and downslope depth specified on
design form.
5 Installer is responsible for obtaining Mason County installation approval prior to backfill of
system components.
6 Installer is responsible for obtaining Septic Designer/Engineer installation approval prior to
backfill of system components.
7 Mason County Asbuilt Form, Record Drawing, and Installation fee must be submitted for
final installation approval.
8 Future homesite development may require a geological assessment.
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.
OFFICIAL USE ONLY
• MASON COUNTY DATE RECEIVED:
'
ECENEDBY: W, Cl Public Health & Human Services AMOUNTRECENE
Environmental Health 360-427-9570,ext.400 or360-275-4467,ext.400 �, O
415 N.6th Street S�G Shelton,WA 98584 f l Oc .(p oo i
ON-SITE SEWAGE SYSTEM APPLICATION
rn n
APPLICANT PHONE I'll
MPM Venture Group 253-225-2808 z
MAILING ADDRESS-STREET,CITY,STATE,ZIP CODE i Lt --�j of W
110 W K St., STE C
SITE ADDRESS-STREET,CITY,ZIP CODE N
xxx Eagle Point Drive, Shelton, WA 98584 ® �l I .'s'
NAME OF DESIGNER PHONE I n rti ry ®
Chris Elstrott f 360-561-5000
NAME OF INSTALLER PHONE ® I
Hatten & Sons i 360-628-7851
PERMIT TYPE(select one) I DRINKING WATER SOURCE N�' I
❑ RESIDENTIAL OSS ❑ COMMUNITY OSS ❑COMMERCIAL OSS O PRIVATE INDIVIDUAL WELL ❑ PRIVATE TWO-
TYPE OF WORK(select one) ! ❑ PUBLIC WATER SYSTEM
❑ NEW CONSTRUCTION/UPGRADES ❑ REPAIR!REPLACEMENT OTHER DETAILS(select all that apply) ❑ TABLE X REPAIR I 11
SUBMITTALS ❑SURFACING SEWAGE ❑ EXISTING FAILURE 0 SHORELINE WI
Q DESIGN FORM(REQUIRED) El SEPTIC DESIGN(REQUIRED) BEDROOMS LOT SIZE WAS LOT CREATED AFTER4/1/2025? O I
❑ WAIVER(S)(IF APPLICABLE) 4 1.61 YES NO t
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DIRECTIONS TO SITE AND SITE CONDITIONS:(ex.locked gate) ! �1
0
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SITE MUST BE FLAGGED FROM MAIN ROAD AND TEST HOLES MUST BE FLAGGED WITH TEST HOLE NUMBERS, i 'P
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OFFICIAL USE ONLY BELOWTHIS LINE
UPGRADE!FAILURE SOURCE(for reporting purposes)
®VOLUNTARY ❑MAINTENANCEFUMPING❑ BUILDING PERMIT❑HOME SALE❑COMPLAINT ®OTHER:
INSPECTOR SOIL LOGS I COMMENTS/CONDITIONS
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III I 7
SOIL CODES: ! RECORD DRAWING AND INSTALLATION REPORT
V=VERY G=GRAVELLY 6=SAND L=LOAM SI=SILT C=CLAY E=EXTREMELY R=ROOTS REQUIRED FOR FINAL APPROVAL.
IN TOR SIGNATURE j DATE APPLICATION EXPIRATION DATE APP TION APPROVED/ISSUED BY DATE
TH MAY BE SCANN D AND AVAILABLE FOR PUBLIC VIEW ON THE MASON COUNTY WEBSITE Revised:01/09/2026
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DESIGN FORM—PAGE ONE Assessor's Parcel Number: j 1 (/ L / FZ L 7 6 IIoo
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 pa er size: 11"X17"
rx >; _ .. .. .. .. r r�. i,-�.:iu't .ry;x 'k ,s 5_
=�.. ..,�:�,�.,.,��.�,.- � �.`��._..,,�_� 4�PARCEI,IDEN�iFIC�1TI0lY 4,� :�..��� r:a,.... s :����,..�.� F fi:�;t�.�:��,._a`_�,�,,..
Permit Number: SWG — cxj( t-{ 3 Designer's Name: STi2Q7
Applicant's Name: , 1f1 ' ✓�NTL,, G1covoo Designer's Phone Number: 3'6o- /— ≤ a4'
Mailing Address: //D W /e, sz sue, Designer's Address: /28 ..IA P11//ER 37
Si,�E�7BU w/a 9vs�y City State Zip 4W)A1/2 AO, Gv4 WS—S_?
City State ; Zip Designer's Email C? 1/•
Y ,k'Z t'cir � zd s. 'r'rf Cr�v-' a E
�� Treatment Device
❑Glendon ❑ Sand Filter ❑Mound L"d'Sand Lined Drainfield ❑Recirculating Filter 0 ATU ❑Other
Treatment Level(check all that apply): ❑A ❑B ❑C ❑BLl ❑BL2 ❑BL3 0 E 0 N
Drainfield Type
❑ Gravity ressure ❑Trench led 0 Sub Surface Drip
Septic Tank/Drai,field Specifications Laterals
Number of Bedrooms !/ Sched e/Class
Daily Flow:Operating Capacity gpd Length ft
Daily Flow:Design Flow gpd Diameter. /$/ in
Septic Tank Capacity(working) / jd gal Number
Receiving Soil Type(1-6) / j Separation 2- ft
Receiving Soil Appl.Rate gpd/ft2 Orifices
Required Primary Area ft2 Total Number of Orifices
Designed Primary Area 4/ ft2 Diameter zl in
Designed Reserve Area 519 Q i ft2 Spacing 3p. in
Trench/Bed Width ft Manifold
Trench/Be Length 1 ' ft Schedule/Class 4�n
Elevation Measurements Length 7 ft
Original Drainfield Area Slope I % Diameter 2— in
New Slope,If Altered d ( % Preferred.manifold configuration used? O Yes
Depth of Excavation Up-slope /. in in Transport Pipe
from Original Grade Down-slope -, " in Schedule/Class y�
Designed Vertical Separation Zc/ I in Length 7S ft
Gravel-based Drainfield Required? es ❑No Diameter a in
Pump Required? I1 ❑Nol Dosing and Pump Chamber
Pump/Siphon Specifications Number of doses/day 4/
Diff.in Elevation Between Pump;&Uppermost Orifice J ft Dose quantity gal
Drainfield Squirt Heigh
t/Selected Residual (head) y Cft Chamber Capacity(flood) /2.,Qa gal
Uppermost Orifice O'Higher ❑Lower than Pump Shutoff Pump contro : Please_c�hee/k those required.
Capacity @ Total Pressure Head i r D ,la se Meter L�NEvent Counter
p tY tiq gP Q P
Calculated Total Pressure Head 2,1 {} If tI im r I 1 pnG5� �S�-� Pump ofF
Comments I MA V 262026
V r�,7t J NS,vG4�s6'
MASON COUNTY ENVIRONMENTAL HEALTH
flfo)O n
Revised_6/11/2025
DESIGN FORM—PAGE TWO Assessor's Parcel Number: q Z.1® ;Z 1 j 7 i
Permit Number: SWG
pESIGN CHECKLISTS f.
Scaled lot Plan Scaled Layout Sketch Cross-Section Sketch
T hole locations C$Dmfield orientation and layout Reference depth from original grade:
[YSj1 logs Trench/bed dimensions and p-tic tank
L1�Pr' operty lines critical distances within layout D1cainfield cover
iExisting and proposed wells DD--Box/Valve box locations Reference depth from original grade
within 100 ft of property D Septic tank/pump chamber and r�e�stri�ct' `a strata:
Measurements to cuts,banks, and I to tions D- i,aterals,trench/bed,top and
� �surface water and critical areas LD Obb rvation port location _/bottom
C�YLocation and orientation of D en-out location ,fg C Lain drain collector
cGna i in and all absorption 9'1iji1 old placement �'Sand augmentation
cot onents ❑�V� �' ce placement Other cross-section detail:
ocation and dimension of C Lateral placement with distance i3servation ports/clean-outs
primary system and reserve area
toe e of bed Other Information
uildings ud'ble/visual alarm referenced Yes No
Direction of slope indicator
cale of drawing shown on scale ❑ Ei1$ gn staked out
terlines bar ❑ Q-I£e rded Notices attached
❑ s, easements,driveways, C;l' I 0 aiver s attached
Elevation benc k a�d�r lative � )
arkin p ❑Pu curve attached g i elevations 911 er rents
❑�h arrow and scale drawing i ,.�k � :�� ❑ evaluation of failure
shown on scale bar
�6 p2® �N Non-r9siItial justification
R i P� MEN�P� Waste strength
���ON low
The undersigned designer must be notified by installer at time of installation es ❑ No
Signature fof Designer Date
The undersigned has reviewed this design on behalf of Mason County Public Health and determined it to be in
compliance with state andtlocal - 'te reg lations:
En ro to ealth 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: 5 )
)
✓ 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. Revised:6/11/2625
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11�t oN Tl�✓t� ryJ•�:�",<'_ s �QgJ.
f ` 1. DRAINFIELD. SEE DETAILS
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—•;_ 2• BENCHMARK EL. = 100' Ae F' D
tw 3. J2pp GAL. CONCRETE SEPTIC TANK.
i fs ja a ,gS 85 084 4. 1200 GAG. cojve_ ,a vin' 71'qK.
• . ' ,/ '/u PVC DELIVERY LINE.
�r+a _
M MIN. SLOPE o
AY 2 6 201-3 y 6. d" PVC ASTM 3034 TIGHTLINE.
Yom?"
MASON COUNTY ENVIRONMENTAL HEAL S 2s
7. 4" PVC CLEANOUi, I.E.•— // +
j IB�
e' WATERLINE. MUST BE LOCATED MIN.10•
EIMOM ALL SEPTIC SYSTEM COMPONENTS.
LEGAL DESCRIPTION 2Soy�
ADVANCED ENGINEERING OWNER: JOB NUMBER
f� /�<'�2 r✓�V7-_e t� C;Iilf � S:22 T:�/ R:IlArrT_P_#5G2/Zz-76 9vo 9y
128 N.River Street d i/o �(` �D?"2G
� — Montesano,WA 98563 /'
360-249-$447 _ s//F�cTzsiv. �v/t g�sf�'y Tom' V s�° --�2 SCALE: / % z/9 -NORTH SHT_I of 2._
r'( ,SP-SO �13S .Q!/�4>/drs/ R�.�TS .(%c qs/NG
Tf�i��•'��=� ..(c�CsG'1ema.
VG'a GAS
21 ' 69 G/ 1 (S, DEng/c E auS�
s� �o �rL
r� 1. THIS IS A SPECIAL DESIGN DUE TO ADVERSE SOIL
LTC` A;LS �� OR.1 Ir-1f L.- aTZA CONDITIONS, GROUNDWATER TABLE AND/OR TOPOGRAPHY.
_ ADVANCED ENGINEERING HAS DESIGNED THIS SYSTEM IN
�I�/�/ h{�I Y r �T •� F 1L I C-- �A SR I G ACCORDANCE WITH ALL CURRENT STATE AND COUNTY HEALTH
/ V I--- 1 �/ Ø2T1(. -7 -DEPARTMENT REQUIREMENTS , AND ASSUMES NO
II / ,1 SG/,/ 'RESPONSIBILITY FOR ITS USE OR LONGEVITY; THE OWNER
THEREFORE AGREES TO MAINTAIN AND MAKE ALL NECESSARY
, r 3c C_� vl �LS ENGINEERING. THE SYSTEM AT NO COST TO ADVANCED
9 r• naon .
:-lJ?— /qT!S,{i tb r?7s I 2. THE CONTRACTOR SHALL ER CERTIFIED AND APPROVED BY
_ /' /,jOjfp/y/pt. / - - // ` THE COUNTY TO INSTALL SEPTIC SYSTEMS.
: �v ,( ." 3. THE CONTRACTOR SHALL FIELD VERIFY ALL CONTOURS,
£ I l /
�/ -i�! \� //�/ ;� 6� SRN® STUB OUT ELEVATIONS, AND TRENCH- DEPTHS IN
30 Sc/.� S/0 T Y C I \ I - \ cvs/v�oA� DRAINFIELD AREAS PRIOR TO CONSTRUCTION.
• r r�I ` 4. ALL.CONSTRUCTION MATERIALS AND INSTALLATION SHALL
�� II I FV t�`� \\ r 4> CONFORM TO ALL APPLICABLE' STATE AND COUNTY HEALTH
SP50&S59hA' I _ ' - DEPARTMENT REQUIREMENTS.
. aD
�, c400 5'. IT SHALL BE THE INSTALLER'SRESPONSIBILITY TO HAVE
x A COPY OF THIS DESIGN ONSITE AT ALL TIMES DURING
, .. CONSTRUCTION.
So _
X10 -0 6. IT SHALL BE THE OWNER'S AND/OR INSTALLER'S
�� �'. ,'Loil RE$PONSIBILITT TO NOTIFY ADVANCED ENGINEERING AND
•• U THE COUNTY HEALTH DEPARTMENT FOR THE REQUIRED
<� - / •j" -32" 3�� c ��� (INSPECTIONS PRIOR TO HACKFILLING.
D ,r ,! 1r 7. ALL REQUIRED TESTS SHALL BE SUCCESSFULLY RUN PRIOR
Cnpadty-ILS.G.PM.0 20 4) 60 80 100 120 4D= �r � + TO CALLING ADVANCED ENGINEERING FOR FINAL
6/ 6- M MAY.2 6 2026
0 ro1 - t A-I f"j � �M ACCESS LIDS MUSTLL BE ACCESSIBLE FORONENTS NINSPECTION.ING ALL TANK
ASO UNTVFNV� 6, r �A-I-�. LO��Y1 �(� 8. ANY VARIATIONS TO THIS: DESIGN SHALL FIRSTS BE
RONMENTq� E 5.e]A/49 I\- V APPROVED BY' ADVANCED ENGINEERING AND THE COUNTY
7� (� H [ 'r/� t HEALTH DEPARTMENT.
DETAU J U`�`+U `�' ! 9. OWNER/INSTALLER SHALL NOT REMOVE. ANY TOP- SOIL IN
�l u� •• _ - •
- DRAINFIELD AREA. REMOVAL OF TOP SOIL COULD RENDER
THE SITE UNUSABLE.
t1BAIRN E=WILLIAMS==C = 140 V �I • 'c7Ll V V10. EXISTING UTILITIES SHOWN ON THE PLANS HAVE BEEN
L A T$ R A L DATA =__ - v 4 'PLOTTED FROM THE BEST INFORMATION AVAILABLE TO THE.
* 2. LATERAL LENGTH 48.0 feet * 6. LATERAL DIAMETER 1.25 inch - � DESIGNER. ACCURACY AND COMPLETENESS ARE NOT
* 3. LATERAL SPACING 2.5 feet * 7. ORIFICE SPACING 2`,5' feet - V II GUARANTEED.
* 4. PIPE SCHEDULE/CLASS 40 * 8. ORIFICE DIAMETER - 3/16. inch •
5. NUMBER OF LATERALS 4 9. ORIFICES/LATERAL 19 S
_
=== MANIFOLD DATA \ /��� _ aai �/ \�' THREADED CAP OR PWG
*10. MANIFOLD LENGTH 7.5 feet *12. MANIFOLD DIAMETER 2 inch
*11, PIPE SCHEDULE/CLASS 40 *13, MANIFOLD TYPE END - / ;
PLUG IN SLEEVE
- FORCEMAIN DATA = ,dI
• *14. FORCE MAIN LENGTH 75.0 feet *19, SWING CHECK VALVES I.
*15, PIPE SCHEDULE/CLASS 40 *19. GATE VALVES 0 _ z_ S^PVC
*16. FORCE MAIN DIAMETER 2 inch 20. OTHR.VRL.HDS,LOST 0 S DI
*17_ 90 DEGREE BENDS 4 * Cj� r I 1 I IE-�� �'/.�9 �(�HIGH WATER ALARM - LAST I ORIF:WITH O NTATI .
E /� I 4 Ems// - SHIELDS IF ORIFICE ORIENTATION
�� IS UPWARD
ii PLMPCN Y! MACKFR.L
_= SYSTEM HEAD - FLOW DATA =__ e( /y MATERIAL*21- CALCULATE 10 VALUES OP PRESSDRS AND FLOW AT THE POMP USING 1.0 FOOT 7 ;I � P iJ N
MINIMUM PRESSURE ON THE LAST ORIFICE AND INCREMENTING THE _ ��-(��}�, 7^ D -1Z4^• *22, DRAINFZELDOELEVATION ABOVE PUMP =BY 5I FEET 3 -" EELEV•_ //O \�\\'f I J 9S- I.IS. r %�\\o()
- o o PRESSURE LATERAL AS SUMMARY OF HEAD - D Z S CHARGE DATA a•. .. __._..... I 0000
J,
.. • SPECIFIED
/ 00
\ 00 O
RESIDUAL FLOW DELTA READ AT HEAD AT DELTA TOTAL TOTAL
HEAD AT PER FLOW IN DISTAL FORCE HEAD IN SYSTEM SYSTEM \ - \ 000 00000
e aoo p� Ooo� DRAIN ROCK:e'MIN.
LAST ORI:F LATERAL LATERAL LATERAL MAIN MANIFOLD FLOW HEAD 1. 99 GAL. CHAMBER -• ' 9. EFFLUENT PUMP — HYDROMATIC. �SWEEPE OR ELBOW LONG _•__-oBELOW PIPE
(feet)=_=(gal/min)===<io% ok (feet)===(feet)===<108 ok (gal/min) (feet) 7. 1200 GAL. WATERTIGHT CONCRETE .
PUMP CHAMBER WITH WATERTIGHT SP OR EQUAL•
1.00 8.05 8.0 1.23 1.14 -7.4 32.2 8,5 2 B0D,.GAL._ CHAMBER. ��\/_ % \\ .�\/\� G'PVC WITH DRNN HOLES;
2.00 11.38 7,6 2.44 2,26 -7.6 45.5 11.7 RISER AND LID. IF DIFFERENT 10. "ORENCO" WATERPROOF JUNCTION EXTENOMONTORPONDGRAVEL
PUMP CHAMBER IS USED. THE TO MONITOR PONDING
3.00 13.93 7.4 3.65 3-37 -7.7 55.7 14.9 .3. 1•zGb GAL. SEPTIC TANK BOX.
4.00 16.07 7.3 4.85 4.47 -7.8 64.3 18.1 - ` MERCURY FLOAT WILL CHANGE. INFILTRADVE SURFACE
5.00 17.96 7.1 6.05 5.57 -7.9 71.9 21.3 - " 4. "ORENCO" 24" WATERTIGHT DOSE VOLUME 1c+GALS ±
6,00 19,67 7,0 7.24 6.66 -8.0 78,7 24,4 RIBBED PVC RI ER W/ LID 11. THREADED UNION
7.00 21.24 7.0 8.43 7:76 -8.0 85.0 27.5 TS
8-.00 22.71 6.9 9.62 9.85 -8.1 90.E 30.5 (GROUTED ON)(/d40/D '/J64)8. MERC Y FLOAT SWIT9flES. 12. CHECK VALVE
9.00 24.08 6.8 10.81 9.94 -8.1 96,3 33.6 l JJ ATTACH TO SECURED PVC
10.00 25-3E 6.8 12.00 11.03 -8.1 101,5 36.7 5. SWITCH AND ALARM PANEL 04T57AB!IAND SET FOR PUMP 13. ,$C//fr'PVC FORCEMAIN
ON`HOUSE. CYCLE. .. . .... V
Volume of Laterals 14-9 -
MceiMain Volume 3.1 6. POWERLINE T A ! D T 1 L/y rrLVENT P/�T�i�- MONITORINGICLEANOUT PORT
Force Main Volume 13.1
(IXAMPLEI
Total System Volume 29.3 gallons
OWNER: .1 B NUMBER
ADVAi�ICED EPIGINEERING � _ � -
128 N. River Street 5^ TE ..
Montesano WA 98563 /�O,,4 i14'v71-'A - v'euv� a DATE
— 360-249-8447 SHT Z . OF Z