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HomeMy WebLinkAboutSWG2026-00096 - SWG Application / Design - 5/19/2026 MASON COUNTY 415 N 6TH STREET,SHELTON,-967 ,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: SWG2026-00096 APPLICANT Carlson,John Phone: 360-463-1675 Address: 301 E Wallace Kneeland Blvd Shelton, WA 98584 SEPTIC DESIGNER Hunter,Adam Phone: 360 753-1226 Address: 2201 93rd Ave SW Olympia, WA 98512 Site Address: 231 W Simpson Rd Primary Parcel Number: 520017790141 Permit Description: 2BR Sand Lined Pressure Bed Permit Submitted Date: 04/03/2026 Permit Issued Date: 05/19/2026 Issued By: Jeff Wilmoth Current Permit Fees Paid: $570.00 (additional fees may be required upon installation of system). Permit Expiration Date: 04/08/2029 (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. 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/environmentallonsite/oss-inspection-request.php or call: 360-427-9670, extension 400. OFFICIAL USE ONLY ( . MASON COUNTY DATE RECENED„ / b3 / p AMOUNT RECEIVED RECEIVED BY: Public Health & Human Services 6 IN(IIIU v N Environmental Health 360-427-9670,ext.400 or 360-275-4467,ext.400 N 415 N.6th Street-Shelton,WA 98584 S W G aOcr„ _ Z lA ON-SITE SEWAGE SYSTEM APPLICATION APPLICANT PHONE rn m r John Carlson 3604631675 Z MAILING ADDRESS-STREET,CITY,STATE,ZIP CODE JLI C 301 E Wallace Kneeland Blvd Shelton WA 98584 m SITE ADDRESS-STREET,CITY,ZIP CODE 231 West Simpson Road 1Yij Shelton 98584 I No NAME OF DESIGNER PHONE ADAM HUNTER 3607531226 NAME OF INSTALLER Q PHONE O I HOUSE BROTHERS gam' PERMIT TYPE(select one) DRINKING WATER SOURCE N RESIDENTIAL OSS bICOMMUNITYOSS fJCOMMERCIALOSS ❑ PRIVATE INDIVIDUAL WELL ❑ PRIVATE TWO-PARTY WELL z TYPE OF WORK(select one) ❑ PUBLIC WATER SYSTEM ❑✓ NEW CONSTRUCTION/UPGRADES ❑REPAIR/REPLACEMENT OTHER DETAILS(select all that apply) ❑ TABLE X REPAIR I SUBMITTALS ❑ SURFACING SEWAGE ❑ EXISTING FAILURE ❑SHORELINE 03 I ❑■ DESIGN FORM(REQUIRED) ❑■ SEPTIC DESIGN(REQUIRED) BEDROOMS LOTSIZE WAS LOT CREATED AFTER 411/2025? r ❑ WAIVER(S)(IF APPLICABLE) 2 z i 1.72 YES NO I DIRECTIONS TO SITE AND SITE CONDITIONS:(ex.locked gate) HANKS LAKE TO A RIGHT ON MARTIN TO A LEFT ON SIMPSON TO SITE ON THE LEFT. I I— O SITE MUST BE FLAGGED FROM MAIN ROAD AND TEST HOLES MUST BE FLAGGED WITH TEST HOLE NUMBERS. OFFICIAL USE ONLY BELOWTHIS LINE UPGRADE/FAILURE SOURCE(for reporting purposes) VOLUNTARY ❑MAINTENANCE/PUMPING❑ BUILDING PERMIT❑HOME SALE❑ COMPLAINT O OTHER: INSPECTOR SOIL LOGS COMMENTS/CONDITIONS t S ((o5 SOIL CODES: RECORD DRAWING AND INSTALLATION REPORT V=VERY G=GRAVELLY S=SAND L=LOAM Si=SILT C=CLAY E=EXTREMELY R=ROOTS REQUIRED FOR FINAL APPROVAL. IN ECT R GNATURE DATE APPLICATION EXPIRATION DATE ICATION APPROVED/ISSU BY DATE L(,THI O M Y BE SCANNED AND AVAILABLE FOR PUBLIC VIEW ON THE MASON COUNTY WEBSITE I Revised:01/09/2026 'DESIGN FORM—PAGE ONE Assessor's Parcel Number: 520017790141 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 2Q - (� /„Pesigner's Name: ADAM HUNTER Applicant's Name: John Carlson Designer's Phone Number: 3607531226 Mailing Address: 301 E Wallace Kneeland Blvd Designer's Address: 2201 93RD AVE SW, STE A Shelton WA 98584 City State Zip OLYMPIA WA 98507 City State Zip Designer's Email ADAM@HUNTERSEPTICDESIGN.i DESIGN PARAMETERS Treatment Device ®Glendon OSand Filter ®Mound '• Sand Lined Drainfield ORecirculating Filter ❑ATU ❑Other Treatment Level(check all that apply): ❑A D B ❑C ❑BLI ❑BL2 ❑BL3 O E ❑N Drainfield Type ❑ Gravity 15 Pressure O Trench 1Y Bed O Sub Surface Drip Septic Tank/Drainfield Specifications Laterals Number of Bedrooms 2 Schedule/Class 40 Daily Flow: Operating Capacity 180 gpd Length 30 ft Daily Flow: Design Flow 240 gpd Diameter 1.25 in Septic Tank Capacity(working) 1000 gal Number 3 Receiving Soil Type(1-6) 1 Separation 2.667 ft Receiving Soil Appl.Rate I gpd/ft2 Orifices Required Primary Area 240 ft2 Total Number of Orifices 42 Designed Primary Area 240 ft2 Diameter 3/16 in Designed Reserve Area 240 ft2 Spacing 26 in Trench/Bed Width 8 ft Manifold Trench/Bed Length 30 ft Schedule/Class 40 Elevation Measurements Length 6.5 ft Original Drainfield Area Slope 0 % Diameter 2 in New Slope,If Altered 0 % Preferred manifold configuration used? ®Yes QNo Depth of Excavation Up-slope 54 in Transport Pipe from Original Grade Down-slope 54 in Schedule/Class 40 Designed Vertical Separation 18 in Length 160 ft Gravel-based Drainfield Required? Oyes ONo '• Diameter 2 in Pump Required? ®Yes ONo Dosing and Pump Chamber Pump/Siphon Specifications Number of doses/day 6 Diff.in Elevation Between Pump&Uppermost Orifice 4.5 ft Dose quantity 40GAL gal Drainfield Squirt Height/Selected Residual(head) 3 ft Chamber Capacity(flood) 1000 gal Uppermost Orifice @Higher OLower than Pump Shutoff Pump controls:Please check those required. Capacity @ Total Pressure Head 21.538 gpm Ti . r C�1 El apse Meter Q Event Counter Calculated Total Pressure Head 9.307 ft If Ti r Pipan al off 4HRS F M Comments MAY 9 9 2C26 MASON COUNTY ENVIRONMENTAL HEALTH Revised: 6/11/2025 DESIGN FORM—PAGE TWO Assessor's Parcel Number:I520017790141 I Permit Number: SWG �� � - � DESIGN CHECKLISTS F' Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch Ll Test hole locations 0 Drainfield orientation and layout Reference depth from original grade: © Soil logs I Trench/bed dimensions and Septic tank • Property lines critical distances within layout 0 Drainfield cover 0 Existing and proposed wells 0 D-Box/Valve box locations Reference depth from original grade within 100 ft of property 0 Septic tank/pump chamber and restrictive strata: 0 Measurements to cuts,banks, and locations 0 Laterals,trench/bed,top and surface water and critical areas 0 Observation port location bottom 0 Location and orientation of 0 Clean-out location IF Curtain drain collector curtain drain and all absorption M Manifold placement 0 Sand augmentation components 0 Orifice placement Other cross-section detail: 0 Location and dimension of [q Lateral placement with distance d Observation ports/clean-outs primary system and reserve area to edge of bed � Buildings Other Information LI Audible/visual alarm referenced Yes No 0 Direction of slope indicator p Scale of drawing shown on scale E1 0 Design staked out 0 Waterlines bar l5 0 Recorded Notices attached EEl Roads, easements, driveways, 12 Elevation benchmark and relative 1 ❑ Waiver(s) attached parking el jv t ate�f ,yt�r� a ents 0 Q 0 Pump curve attached North arrow and scale drawing K � 0 Evaluation of failure shown on scale bar Non-residential justification El MAY 0 0 Waste strength 11ASON COUNTY ENVIRONMEN P 'i ' ❑ ❑ Flow DESI+ INPPROVAL The undersigned designer must be notified by installer at time of installation ®Yes O No 4/3/26 Signature o Designer Date The undersigned has reviewed this design on behalf of Mason County Public Health and determined it to be in compliance with state and local -s ere lations: E it ntal Health Specialist Date CAUTION: DESIGN APPAL IS VALID ONLY UNDER THE FOLLOWING CONDITION: V The design is stamped"Approved"by Mason County Public Health. V The Onsite Sewage Permit has not expired,the Permit Expiration Date is: V Drainfield site conditions have not been altered to adversely affect conditions of design approv 1. 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: 6/11/2025 PAGE 1 MASON COUNTY HEALTH DEPARTMENT ON-SITE SEWAGE DISPOSAL SYSTEM DESIGN SITE#: PARCEL#: 520017790141 DATE SUBMITTED:04/03/26 LEGAL/LOT#: SUBMITTED BY: ADAM HUNTER APPLICANT: JOHN CARLSON ADDRESS: I.CALCULATIONS NUMBER OF BEDROOMS= 2 RESIDENTIAL GPD FLOW= 240 IF NON-RESIDENTIAL-GPD FLOW WILL BE AS FOLLOWS: GPD= APPLICATION RATE= 1.0 GPD/FT2 REDUCTION=LEAVE BLANK IF NO REDUCTION TAKEN DRAINFIELD SIZING ABSORPTION AREA= 240 FT2 TRENCH LENGTH OR BED CONFIG.= 8FTX30FT SAND LINED BED II.WATERPROOF SEPTIC TANK COMPOSITION AND SIZE= 1000 GAL.CONCRETE NEW OR EXISTING= NEW III.DRAINFIELD CROSS SECTION DEPTH TO DRAINROCK BOTTOM= 2'-6" ROCK DEPTH BELOW PIPE= 0'-6" SEPARATION FROM TRENCH BOTTOM TO IMPERMEABLE MATERIAL/SEASONAL SATURATION= >1'-6" FILL DEPTH= 1'-9" TRENCH WIDTH= 8'-0" IV.PUMP REQUIREMENT DOSING VOLUME IN GALLONS= 40 NUMBER OF DOSES PER DAY= 6 V.PRESSURE CALCULATIONS USING PIPE CLASS 40 ORIFICE 3/16 04/.03/26 MAY 19 2026 MASON COUNTY ENVIRONMENT AL H :w+z x 13 W EALTH `•I•~PiiU���SLt�. PAGE 2 LATERAL#1 = SQUIRT HEIGHT(FT) 3.00 (NOTE(2):ORIFICE DISCHARGE RATE_(11.79)X(ORIFICE DIAMETER)SQ2 X SQ ROOT OF(TOTAL PRESSURE HEAD) ORIFICE DISCHARGE RATE= 0.71792 LATERAL LENGTH IN FEET= 30.00 ORIFICE SPACING= 2'2" DISTANCE FROM END CAP= 0'11" NUMBER OF HOLES= 14 LATERAL DISCHARGE RATE= 10.051 LATERAL#2= SQUIRT HEIGHT(FT) 3.00 ORIFICE DISCHARGE RATE= 0.71792 LATERAL LENGTH IN FEET= 30.00 ORIFICE SPACING= 2'2" DISTANCE FROM END CAP= 0'11" NUMBER OF HOLES= 14 LATERAL DISCHARGE RATE= 10.051 LATERAL#3= SQUIRT HEIGHT(FT) 3.00 ORIFICE DISCHARGE RATE= 0.71792 LATERAL LENGTH IN FEET= 3.00 ORIFICE SPACING= 2'2" DISTANCE FROM END CAP= 0'5" NUMBER OF HOLES= 2 LATERAL DISCHARGE RATE= 1.436 LENGTH DIAMETER FLOW FRICTION LOSS SECTION (FT) (IN) (GPM) (FT) AB 160.00 2.00 21.538 1.350 BC 1.33 2.00 20.102 0.010 CD 2.67 2.00 10.051 0.005 DE 30.00 1.25 10.051 0.442 TOTAL= 1.807 **TOTAL HEAD LOSS ** 1) FRICTION LOSS THROUGH SYSTEM= 1.807 2)ELEVATION DIFFERENCE = 4.500 3)RESIDUAL = 3.000 TOTAL= 9.307 )4//3/26 A OVP MAY 19 MASON COUNTY ENVIRONMENTAL HEALTH J."UYTER '•' ��pygF9,y •I ��t:���1�� gl'PYJN MYERS ME3 capacity, liters per minute 0 so 100 ISO 200 250 9 -10 30 __ 6 d I. 0 ' 0 10 20 30 to 50 60 70 Capacity gallons per minute 04/,03/26 ai3':l �'' A0ALIJ it TER'vry �QT /��� 13;,t"r;>?'ti riFS4',c77,,r..TT, ��1�M•111 66.. " :. MASON COUNTY ENVIRONMENTAL HEALTH JBW PROPOSED STUBOUT/CLEANOUT(IE.-98.0) V '1' 1 �I' _ � - - 10 � EXISTING WATER LINES `V _ - � (6 ) PROPOSED SEPTIC TANK(IN.EL.-97.0/OUT.EL.-96.7) f C� PROPOSED PUMP CHAMBER(PUMP EL.-93.5) / 160'-2"PVC TIGHTLINE(CL.200)(CRUSHPROOF SLEEVE UNDER DRIVE) / 5 \ / PROPOSED DRAINFIELD AND RESERVE AREA 10 WETLANDS(PER GIS) 441.8 2 150FT-1 WETLANDS 610.4 9 7 9 0 6 I L 1 /// :2 / 75' 1 0 8 (7 0 8.0 04/03/26 ' nonct.t.uua>ert •'�' 5/ // 1 ' 7 HANKS ON LAKE RD A RIGHT ON MARTIN TO A LEFT ON SIMPSON TO 30.0 SITE THE LEFT T. s 8 SCALE: 1" = 30FT DETAIL#2 SCALE: 1" = 30F1 LA ES SIM SON DETAIL#1 r� AMAY192oD 26 MARTIN MASON COUNTY ENVIRONMENTAL HEALTH IISACK-rILL: API3ROVED EXCAVATED MATERIAL SAND: ASTM C-33 2-6 Y SAND/SAND GRAVEL: 3/4"TO 2 1/2"WASHED DRAINROCK O SEPTIC TANK: NEW 1000GAL. WATER TIGHT TANK PUMP CHAMBER: NEW 1000GAL. WATER TIGHT TANK '-6" PUMP MODEL: MYERS ME3F SET TO PUMP AT 40 GALLON INTERVALS CHECK VALVE AND HIGH LEVEL ALARM REQUIRED 4 SQUIRT HEIGHT: 36" (minimum) .` 1'-4" 2 NOTE: PLACE ORIFICE AT 3 O'CLOCK, USE"T"TO"T"TYPE CONSTRUCTION % '=" NOTE:ALL FOOTING AND DOWNSPOUT DRAINS MUST BE DIRECTED AWAY FROM SEPTIC COMPONENTS III=III= p 0 �yT'46/ & fr NOTE:END OF EACH LATERAL IS TO HAVE A SWEEP 90 WITH -RISERS A REQUIRED TO OR ABOVE FINISHED GRADE OVER TANK LIDS. THREADED END CAP TO JUST BELOW FINISHED GRADE AND PORT IF GROUNDWATER OVER THE TOP OF THE TANKS IS A CONCERN THEN HIGH GROUNDWATER RATED TANKS WILL BE REQUIRED.THE RISERS TO FINISHED GRADE MUST BE SEALED WATERTIGHT AT THE JOINT BETWEEN TANK AND THE RISER. GENERAL NOTES 1. ANY VARIATIONS TO THIS DESIGN SHALL FIRST BE APPROVED BY JIM HUNTER&ASSOCIATES AND THE COUNTY SANITARIAN. 2. OWNER INSTALLER SHALL NOT REMOVE OR DISTURB ANY TOP SOIL WHILE CLEARING TREES AND STUMPS IN DRAINFIELD AREA. REMOVAL OF TOP SOIL COULD RENDER SITE UNUSABLE. 3. OWNER SHALL BE AWARE OF THE POSSIBILITY OF TANKS FLOATING OUT OF THE GROUND SHOULD THE TANKS BE PUMPED EMPTY DURING SEASONAL HIGH WATER TABLE CONDITIONS. 4. ALL CONSTRUCTION MATERIALS AND THE INSTALLATION OF THE DESIGNED SEPTIC SYSTEM SHALL CONFORM TO ALL APPLICABLE STATE AND COUNTY HEALTH DEPARTMENT REQUIREMENTS. 5. USE OF SOME RESERVE DRAINFIELDS MAY NECESSITATE PUMP,SAND FILTER,MOUND OR PRETREATMENT INSTALLATIONS. 6. THE ADDITION OF AN APPROVED EFFLUENT FILTER IN THE SEPTIC TANK IS REQUIRED TO ENSURE THAT SOLIDS DO NOT PASS TO THE DRAINFIELD CAUSING PREMATURE DRAINFIELD FAILURE AND COSTLY REPAIRS. 04iQ3(26 .:: �r 7. ALL REQUIRED TESTS SHALL BE SUCCESSFULLY RUN PRIOR-TO CALLING JIM HUNTER&ASSOCIATES FOR FINAL INSPECTION,ALL COMPONENTS,INCLUDING TANK ACCESS LIDS MUST BE ACCESSIBLE FOR INSPECTION.CONTRACTOR SHALL BE RESPONSIBLE FOR ._ COST OF RETURN INSPECTIONS DUE TO FAILED TESTS OR INACCESSIBLE COMPONENTS. 8. THIS IS A SPECIAL DESIGN DUE TO ADVERSE SOIL CONDITIONS,GROUNDWATER TABLE AND!OR TOPOGRAPHY.JIM HUNTER& S: +o•, ASSOCIATES HAS DESIGNED THIS SYSTEM IN ACCORDANCE WITH ALL STATE AND COUNTY HEALTH DEPARTMENT REQUIREMENTS AND tam. �e ASSUMES NO RESPONSIBILITY FOR ITS USE OR LONGEVITY.THE OWNER THEREFORE AGREES TO MAINTAIN AND MAKE ALL NECESSARY "= REPAIRS TO THE SYSTEM AT NO COST TO JIM HUNTER&ASSOCIATES.