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HomeMy WebLinkAboutSWG2025-00420 - SWG Application / Design - 10/14/2025 (2) 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: SWG2025-00420 APPLICANT DAHL PROPERTIES LLC Phone: 1.360.740.0345 Address: 261 HAMILTON RD N CHEHALIS, WA 98532 OWNER DAHL PROPERTIES LLC Phone: 1.360.740.0345 Address: 261 HAMILTON RD N CHEHALIS, WA 98532 SEPTIC DESIGNER ADAM HUNTER* Phone: 360-753-1226 Address: PO Box 162 OLYMPIA, WA 98507 SEPTIC INSTALLER ANDREW LEHMAN* Phone: 360-470-4914 Address: 282 FULLER RD SALKUM, WA 98582 Site Address: W Highland Rd Primary Parcel Number: 520241350010 Permit Description: New 4BR SFR-Pressure -revision Permit Submitted Date: 10/14/2025 Permit Issued Date: 01/21/2026 Issued By: Jeff Wilmoth Current Permit Fees Paid: $725.00 (additional fees may be required upon installation of system). Permit Expiration Date: 11/17/2028 (based on date of inspection) Permit Conditions: 1 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. 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 RECENED: aL C > AMOUNT RECENED: RECEIVED BY: ..Public Health & Human Services v Environmental Health 360-427-9670,ext.400 or 360-275467,ext.400 415 N.6th Street-Shelton,WA 98584 SV\IG _ Cn O Z fA ON-SITE SEWAGE SYSTEM APPLICATION m 0 APPLICANT PHONE Ill DAHL PROPERTIES 3607400345 z MAILING ADDRESS-STREET,CITY,STATE,ZIP CODE 261 N HAMILTON RD CHEHALIS WA 98532 SITE ADDRESS-STREET,CITY,ZIP CODE XX HIGHLAND RD SHELTON WA 98584 I NAME OF DESIGNER PHONE o ADAM HUNTER 3607531226 NAME OF INSTALLER PHONE v W WASHINGTON SEPTIC SERVICE <_ o PERMIT TYPE(select one) DRINKING WATER SOURCE O I O I IJRESIDENTIAL OSS bICOMMUNITY OSS COMMERCIAL OSS IL.,IJ PRIVATE INDIVIDUAL WELL PRIVATE TWO-PARTY WELL Z I O TYPE OF WORK(select one) O1 PUBLIC WATER SYSTEM NEW CONSTRUCTION/UPGRADES JREPAIR/REPLACEMENT OTHER DETAILS(select all that apply) 0 TABLE X REPAIR SUBMITTALS 0 SURFACING SEWAGE 0 EXISTING FAILURE ❑SHORELINE DESIGN FORM(REQUIRED) IO)SEPTIC DESIGN(REQUIRED) BEDROOMS LOT SIZE WAS LOT CREATED AFTER 4/1/2025? r I WAIVER(S)(IFAPPLICABLE) 4 4 ❑ YES ❑ NO 0 DIRECTIONS TO SITE AND SITE CONDITIONS:(ex.locked gate) SHELTON MATLOCK RD TO A LEFT ON HIGHLAND CONTINUE FOR 1.6 MILES TO SITE ON THE RIGHT - PROPOSED NEW LOT (CURRENTLY A PART OF LOT 1 - NW) I- 0 SITE MUST BE FLAGGED FROM MAIN ROAD AND TEST HOLES MUST BE FLAGGED WITH TEST HOLE NUMBERS. OFFICIAL USE ONLY BELOW THIS LINE UPGRADE/FAILURE SOURCE(for reporting purposes) 0 VOLUNTARY 0 MAINTENANCE/PUMPING 0 BUILDING PERMIT OHOME SALE OCOMPLAINT 0OTHER: INSPECTOR SOIL LOGS COMMENTS/CO APR fi Li ® O 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 FINALAPPROVAL. I4ECTOR St NATURE ' DATE APPLICATION EXPIRATION DATE PP ICATION APP OVED/ISSUED BY DATE T IS Ij1II MAY BE SCANNED AND AVAILABLE FOR PUBLIC VIEW ON THE MASON COUNTY WEBSITE Revised:4/14/2025 DESIGN FORM—PAGE ONE Assessor's Parcel Number: 520241350010 -- -- 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 paper size: 11"X17" PARCEL IDENTIFICATION Permit Number: SWG a�5_ t9© (2..€.1Designer's Name: ADAM HUNTER DAHL PROPERTIES Designer's Phone Number: 3607531226 Applicant's Name: Mailing Address: 261 N HAMILTON RD Designer's Address: PO BOX 162 CHEHALIS WA 98532 City State Zip OLYMPIA WA 98507 City State Zip Designer's Email JHANDASSOCIATES@HOTMAIL.COM DESIGN PARAMETERS Treatment Device ❑Glendon ❑ Sand Filter ❑Mound ❑ Sand Lined Drainfield ❑ Recirculating Filter 19 ATU XO2 ❑Other Treatment Level(check all that apply): J A J B J C J BLI J BL2 J BL3 J E J N Drainfield Type OSCAR XO2 ❑Gravity 0 Pressure 0 Trench 0 Bed O Sub Surface Drip Septic Tank/Drainfield Specifications Laterals Number of Bedrooms 4 Schedule/Class DRIP Daily Flow:Operating Capacity 360 gpd Length OS100 ft Daily Flow:Design Flow 480 gpd Diameter 84 in Septic Tank Capacity(working) 1200 gal Number 4 Receiving Soil Type(1-6) 4 Separation 0.5 ft Receiving Soil Appl.Rate 0.6 gpd/ft2 Orifices Required Primary Area 800 ft2 Total Number of Orifices OSCAR Designed Primary Area 800 ft2 Diameter OSCAR in Designed Reserve Area 800 ft2 Spacing OSCAR in Trench/Bed Width 16 ft Manifold Trench/Bed Length 50 ft Schedule/Class 40 Elevation Measurements Length 40 ft Original Drainfield Area Slope 0 % Diameter 1 in New Slope,If Altered 0 a/o Preferred manifold configuration used? O Yes O No Depth of Excavation Up-slope N/A in Transport Pipe from Original Grade Down-slope N/A in Schedule/Class 40 Designed Vertical Separation N/A in Length 40 ft Gravel-based Drainfield Required? O Yes Ef No Diameter 1 in Pump Required? 'Yes O No Dosing and Pump Chamber Pump/Siphon Specifications Number of doses/day OSCAR Diff.in Elevation Between Pump&Uppermost Orifice 6 ft Dose quantity OSCAR gal Drainfield Squirt Height/Selected Residual(head) 10 ft Chamber Capacity(flood) 1200 gal Uppermost Orifice MHigher 0 Lower than Pump Shutoff Pump controls:Please check those required. Capacity @ Total Pressure Head OSCAR gpm Y Timer L�'E se Meteryept Cpun er G Calculated Total Pressure Head OSCAR ft If Timer: Pum on 8 L u a e 1 f`k Comments f APR 232026 f ... MASON COUNTY ENVIRONMENTAL HEALTH R Revised:4/14/2025 DESIGN FORM—PAGE TWO Assessor's Parcel Number: 520241350010 -- - Permit Number: SWG DESIGN CHECKLISTS Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch Test hole locations 9 Drainfield orientation and layout Reference depth from original grade: Soil logs Ed Trench/bed dimensions and 1d Septic tank Property lines critical distances within layout ®' Drainfield cover Existing and proposed wells Ed D-Box/Valve box locations Reference depth from original grade within 100 ft of property Ed Septic tank/pump chamber and restrictive strata: Measurements to cuts,banks, and locations ®' Laterals,trench/bed,top and surface water and critical areas 0' Observation port location bottom Location and orientation of 9 Clean-out location 0' Curtain drain collector curtain drain and all absorption 0' Manifold placement ®' Sand augmentation components 9 Orifice placement Other cross-section detail: Location and dimension of 9 Lateral placement with distance 9 Observation ports/clean-outs primary system and reserve area to edge of bed � Buildings Other Information Audible/visual alarm referenced Yes No Direction of slope indicator Ed Scale of drawing shown on scale O Design staked out Waterlines bar O O Recorded Notices attached Roads, easements,driveways, 0 Elevation benchmark and relative 0 0 Waiver(s)attached parking elevations of system components a ❑ Pump curve attached 0' North arrow and scale drawing 0 0 Evaluation of failure shown on scale bar Non-residential justification ❑ ❑ Waste strength ❑ ❑Flow DESIGN APPROVAL The undersigned designer must oti d b ' staller at time of installation 0'Yes ❑ No 4/13/26 Si atur Designer Date The undersigned has reviewed thi i on behalf of Mason County Public Health and determined it to be in compliance with state and local n-si regulations: En iro a al ealth Specialist Date CAUTION: DESIGN APPR VAL IS VALID ONLY UNDER THE FOLLOWING CONDITION: ✓ The design is stamped"Approved"by Mason County Public Health. 1 , p� '/ The Onsite Sewage Permit has not expired,the Permit Expiration Date is: `� 22`2 ✓ 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. 6 P E This form may be scanned and available for public view on the Maso''county Web site. 1 evise 4114/2025 APR 23 2026 . MASON COUNTY ENVIRONMENTAL HEALTH PAGE 1 MASON COUNTY HEALTH DEPARTMENT ON-SITE SEWAGE DISPOSAL SYSTEM DESIGN SITE#: PARCEL#:520241300000 DATE SUBMITTED:4/13/2026 LEGAL/LOT#: LOT 1 SUBMITTED BY: ADAM HUNTER APPLICANT: CALVIN DAHL ADDRESS: I.CALCULATIONS NUMBER OF BEDROOMS= 4 RESIDENTIAL GPD FLOW= 480 IF NON-RESIDENTIAL-GPD FLOW WILL BE AS FOLLOWS: GPD= APPLICATION RATE= 0.6 GPD/FT2 REDUCTION=LEAVE BLANK IF NO REDUCTION TAKEN DRAINFIELD SIZING ABSORPTION AREA= 800 FT2 TRENCH LENGTH OR BED CONFIG.= 50FTX16FT PER OSCAR II.WATERPROOF SEPTIC TANK COMPOSITION AND SIZE= 1200GAL-X02 TANK NEW OR EXISTING= NEW III.DRAINFIELD CROSS SECTION SAND DEPTH= 0'-6" IV.PRESSURE CALCULATIONS USING PIPE CLASS 40 ORIFICE VETAFIM DRIPLINE LENGTH DIAMETER FLOW FRICTION LOSS SECTION (FT) (IN) (GPM) (FT) SUPPLY 70.00 1.00 12.000 5.4280 RETURN 70.00 1.00 12.000 5.4280 TOTAL= 10.8560 "TOTAL HEAD LOSS 1)FRICTION LOSS THROUGH SYSTEM= 10.856 2)ELEVATION DIFFERENCE = 6.200 TOTAL= 17.056 04/13/26 . G APR 2 32026 P �} AGAI.IJ./IUNTER MASON COUNTY ENVIRONMENTAL HEALTH tscel;,t' i r ri PAGE 2 V.CHECK THE PUMP CAPACITY. PUMP: A.Y.MCDONALD 30GPM-1/2HP PUMP(MODEL#22050E2AJ) (PER OSCAR) EXCESS TDH 50.00 (PER OSCAR) TOTAL HEAD LOSS IN SYSTEM 17.06 STANDARD PUMP CONFIGURATION IS SUFFICIENT? YES - AOALI J.IIUYTER ��f. r`rrrc,sr » MASON COUNTY ENVIRONMENTAL HEALTH 585± SCALE-1"=100'-0" f ° 8 - i WET LANDS 1 ' , ' U FER /' _/ / ° ` \\__ ^ \ .. EK6 -/-.. , J j S DETAIL _\ ° OSCAR XOORAINFIELD ,7O / I do s9 1PD 1 lJ / \ � \ C 7 ORIGINAL LOT 1 ' \ , N I \ OIrO ' O O \ 1 O ' 1 GR �Q \ n,iin II J� Motet I GROUND EL.@ T.H.1(RBM=100.0) / � `��O•fib ,�__ 1' � / /' \v � \ 101 10 110' N WE? ND BUbFER •—- SCALE-1"=30'-0" REEK 150C �\ LOT 3 NO\ES: fl 11' V U y�= RESTRICTIVE LAYER BELOW 41"-PRIMARY/21 RESERVE t -FIVE'ttM.ESRULEMET AP n et, NO WELLS'W1THIN�00'OF DRAINFIELD j-ELAPSE TIME METER AND RISERS TO SURFACE R Q EVENT-COUNTER UIRED OV ALL REQUIRED III TANK LIDS V2-4/13/26-UPDATED WELL AND D.F.LOCATION 'SON COUNTY ENVIRONMENTAL THIS IS NOT A SURVEY: SOIL LOGS SITE FEATURES,TOPOGRAPHY,ELEVATIONS AND BENCHMARKS ARE BASED ON ASSUMED DATUM PROVIDED BY THE OWENER AND COUNTY PLANNING RECORDS AND ARE INTENDED ONLY FOR THE 1) SANDY LOAM 0-41" REVIEW AND CONSTRUCTION OF THE PROPOSED SEPTIC SYSTEM DESIGN.JIM HUNTER&ASSOCIATES MOTTLED SILT LOAM 41"+ RECOMMENDS THAT A LICENSED PROFESSIONAL LAND SURVEYOR ALWAYS BE USED TO SET CORNER, O PROPOSED 4 BEDROOM RESIDENCE 2) SANDY LOAM 0-41" ESTABLISH LOT LINES,DETERMINE ELEVATIONS AND TOPOGRAPHY AND/OR PROVIDE A LEGAL SITE PLAN. NAV088 IS UNKNOWN PROPOSED DRIVE MOTTLED SILT LOAM 41,,+ 3) SANDY LOAM 0-21" A FEE MAY BE CHARGED AFTER INSTALLATION FOR FINAL INSPECTION&RECORD DRAWING PROPOSED WELL CEMENTED TILL 21"+ HEAD WEST ON SHELTON MATLOCK TO A LEFT ON HIGHLAND JAI HUNTER AND ASSOCIATES 04/13/26 CONTINUE FOR 1.6 MILES TO SITE ON THE RIGHT. PROPOSED STUBOUT/CLEANOUT(IE.-100.0) a) P.O.BOX 162,OLY,WA 98507 753.1226 JHAHDASSOCIATES(JHOTMNLCOM CEMENTED TILL 23"+97.51r" 'F i DESIGNER-ADAM HUNTER PROPOSED 1200GAL.SEPTIC TANK(IN.EL.-97.5/OUT.EL.-97.2) v,' `r 5) SANDYLOAM 0-22 y SEPTIC SYSTEM DESIGN FOR- D PROPOSED 1200GAL.PUMP CHAMBER(PUMP EL.-94.0) CEMENTED TILL 22"+ DAHL PROPERTIES ;rs O7 70'-1"PVC SUPPLY/RETURN LINES(SCH40) 6) SANDYLOAM 0-22" SITEADDR- CEMENTED TILL 22"+ ? ^ F OBAOAL7J.NUNTER m XX HIGHLAND RD PROPOSED DRAINFIELD 7) SANDYLOAM 0-22" �1 Gti:1F'tit3F541. Os P LEGAL- q pTN OF 520241350010 1 oF2 PROPOSED OSCAR XO2 RESERVE AREA CEMENTED TILL 22"+ ..D.I TP# A PTN OF 520241350010 SITE# OSX-480- SOFT IC HEADWORKS DETAIL - NO SCALE MIN. SHOULDER LENGTH j LU :•_ Z Z J z_ INSPECTON PORr''':.t::o ry® ®p O B lY LL OS-100 OIL 6C. AM C-33 SAND PREPARED SOIL SURFACE BASAL WIDE X02 Tanks Pre-cast Concrete Pre cast Septic Tank Dischary ` \�^ � �PSoN vnnmtn 04/13/26 Si. I �� mwurz '•:'q est , AnmaJ.HUNTER !.Id I'^I'i 27itsF�'f'!7t'ii'' lition, 4 1e be JIM HUNTER AND ASSOCIATES P.O.BOX 162,OLY,WA 98507 753-1226 JHM DASSOCIATES5HOTMAIL.COM DESIGNER-ADAM HUNTER 2/3 1/3 SEPTIC SYSTEM DESIGN FOR- DAHL PROPERTIES SITE ADDR- XX HIGHLAND RD _ q I x- g; LEGAL- A PTN OF 520241350010 I2 0F2 2 "°1 TP# A PTN OF 5202413500 SSITE# OSX-480-7 HWN-.7-RF -AUTOMATIC HEADWORKS DETAIL - NO SCALE 50FT MIN. SHOULDER LENGTH A ' W Y W Z Z Z 1'SUPPLY ' Z W Z I W O m I INSPECTION POILi":=:- { =°.:::. :..:::: RETURN I O A W Z J Plan View Z em 0 OS-100 r4'SUP CAP W OIL 1 FAT SITE ASTM C-33 SAND INSPECTION PORT Ur PREPARED SOIL SURFACE Z BASAL WIDTH 16FT O X02 Tanks r V . Pre-cast Concrete Pre-cast Concrete Septic Tank Discharge Tank 5 ON 04/13/26 OSCAR HEADWORKS SETUP: �,,,, Place valve 1&2 toggle switch and pump 1 toggle switch to MAN position. $o Pump should dose and all three pressure gauges should stabilize about 50 psi. :,v.,.,, Gauge 3 may read as low as 40 psi.No water should be flowing into septic tank. Place valve 3&4 toggle switch to MAN and valves 1&2 toggle switch to OFF, �� ` '`'v'• pump#1 in MAN.Pump should run,pressures should change:gauge 2 highest ADALI J.HUNTER '•, pressure,gauge 1 less than 2,and gauge 3 should indicate 0 psi.Water should vExrmuo PIA"` be flowing into septic tank very rapidly. Place valves 1&2 and valve 5 in MAN position and valves 3&4 in OFF position, and pump 1 in MAN.Pressure on gauge 1&2 should indicate about the same pressure,and gauge three should indicate between 0-3 psi and water should be JIM HUNTER AND ASSOCIATES flfl __________ flowing into septic tank at a moderate rate. P.O.BOX 162,OLY,WA 98507 753-1226 JHANDASSCCIATESQHDTMAIL.00M Position all toggle switches to AUTO. DESIGNER-ADAM HUNTER rTI1TE LIjj 2/3 1/3 c.Check timer default settings: V1 OFF=3 minutes SEPTIC SYSTEM DESIGN FOR- V1 ON=30 seconds DAHL PROPERTIES V2 OFF=30 seconds SITE ADDR- °B5 i V2 ON=15 seconds L ,-e,,9e,,. XX HIGHLAND RD b; V1 V3 OFF=30 seconds LEGAL- A PTN OF 520241350010 2 OF 2 2T ,,2e-27 � V1V3 On=2 minutes TP# A PTN OF 52024135001 SITE# CR0SS PITON