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HomeMy WebLinkAboutSWG2026-00283 - SWG Application / Design - 9/4/2026 MASON COUNTY 415N6THELTON SHELTQN WA9B400 $H STREE 360�2TON A98S84 BELFAIR:360-2754467,EXT 400 Public Health & Human Services ELMA:360-482-5269,EXT 400 FAX:360-427-7787 On-Site Sewage System Permit: SWG2026-00283 r APPLICANT DINKELMAN SCOTT DOUGLAS& Phone: MERRY LYNN Address: 717 214TH AVE SE SAMMAMISH, WA 98074 OWNER DINKELMAN SCOTT DOUGLAS& Phone'. MERRY LYNN Address: 717 214TH AVE SE SAMMAMISH,WA 98074 SEPTIC DESIGNER JIM HUNTER` Phone: 360-753-1226 Address: PO BOX 162 OLYMPIA,WA 98507 Site Address: 3061 E PICKERING RD Primary Parcel Number. 220041100070 Permit Description: New 2bd OscarXO2 for proposed garage conversion to ADU Permit Submitted Date: 08/26/2026 Permit Issued Date: 09/04/2026 Issued By. Rhonda Thompson Current Permit Fees Paid: $570.00 (.,ddi,,eI fee<F„ay oeregUined upon iesMuotoeorsystem)- Permit Expiration Date: 09/02/2029 (based on dole of mspe<.ron) 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 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/healthienvironmentalionsite/oss-inspection-request.php or call: 360-427-9670,extension 400. OF FICIAI USE ONLY MASON COUNTY DATERECENEa 0, AMOUNT SEEEED. RECEIVED By Public Health & Human Services 70 n a v N Environmental Health 360427. 670,en.400 or 360-J]SA46;en.400 OO 415 N.PIT Sleet -Shelton,WA 98584 SWG _ L) 2 0 :0 V Z N ON-SITE SEWAGE SYSTEM APPLICATION Z X, C A BE APPLICANT PHONE r SCOTT DINKELMAN 425 233-0097 z C MAILING ADDRESS-STREET CITY STATE ZIP CODE Cp E 717 214TH AVE SE i N SAMMAMISH WA 98074 m SITE ADDRESS-STREET CITY ZIP CODE '------- r-z, " ! '•;' 3061E PICKERING RD !I SHELTON WA 98584 RD NAME OF DESIGNER PHONE a JIM HUNTER 'rL'T=+ j 360 753-1226 NAME OF INSTALLER _ __ -] (:J PHONE a o J y O PERMIT TYPE l5Netlone) DRINKING WATER SOURCE o I RESIDENTIALOSS FICOMMUNITY OSS QCOMMERCIAL05S yJ.PRIVATE INDIVIDUAL WELL ❑ PRIVATE TWO-PARTY WELL Z TYPE OF WORKISettlanel ❑ PUBLIC WATER SYSTEM NEW CONSTRUCTION/UPGRADES fl REPAIR I REPLACEMENT OTHER DETAILS Ieelaa 3IIm8I anwvl ❑ TABLE X REPAIR I SUBMITTALS ❑ SURFACING SEWAGE O EXISTING FAILURE ❑ SHORELINE 0 DESIGN FORM(REQUIRED) O SEPTIC DESIGN(REQUIRED) BEDROOMS I LOTSIiE I WAS LoTCREATED AFTF rzozn S I O ❑ WAIVERS)(IF APPLICABLE) 2 YES NO DIRECTIONS TO SITE AND SRF CONDITIONS on lotleetl gale) r O SITE MOST 6E FLAGGED FROM MAIN ROAD AND TEST HOLES MUST BE FLAGGED WITH TEST HOLE NUMBERS. I OFFICIAL USE ONLY BELOW THIS LINE ---- — E.Fmw ULro„ c�re purposes? NQ VOL UNTARY Q MAINTENANCE/PUMPING Q BUILDING PERMIT❑HOME SALE Q COMPLAINT Q OTHER. INSPECTOR SOIL LOGS COMMENTS I CONDITIONS 0 030 65L1rct �5o corm &t o - 3'o G5L ISo o - L 12Ni'C RECORD DRAWING AND INSTALLATION REPORT SOIL CODES =VERY G=GRAVELLY S=SANG L=LOAM SI=SILT C=CLAY E=EXTREMELY R=ROOTS REQUIRED FOR FINALAPPROVAL INSPECTOR SIGNATURE DATE APPLICATION EXPIRATION DATE APPLICATION APPROVED.ISSUED BY DATL dm THIS FORM MAY BE SCANNED AND AVAILABLE FOR PUBLIC VIEW ON THE MASON COUNTY WEBSITE Revised 01/0912026 DESIGN FORM—PAGE ONE Assessor's Parcel Number: 22004-11-00070 A design will be reviewed when 3 copies of each of the following are submitted: � Completed design form that has been signed and dated. e Scaled layout sketch,including all applicable items on checklist. " Scaled plot plan.including all applicable items on checklist. ° Cross-section sketch, including ail applicable items on checklist. This form maybe scanned and available for public view on the Mason County Web site.M cimwrt paper size: 11"X 17" PARCEL IDENTIFICATION Permit Number' SW'G ?Ut3.G -oo -- 3 Designer's Name: JIM HUNTER Applicant's Name: SCOTT DINKELMAN Designer's Phone Number: 360.753-1226 Mailing Address: 717 214TH AVE SE Designer's Address: PO BOX 162 _ SAMMAMISHWA 98074 City State Zip OLYMPIA WA 98507 City State Zip Designer's Email JHANDASSOCIATES@HOTMAftd DESIGN PARAMETERS Treatment Device Oulendon OSand Filter OMound OSand Lined Drainfield Recirculating Filter H ATU NO L_ O Other Treatment Level(check all that apply) Qt O'C Z BL I O'BL2 @'R[3 ❑ E ❑N Drainfield Type ❑ Gravity 0 Pressure ❑ Trench Cl Bed ❑ Sub Surface Drip Septic Tank/Drainfield Specifications Laterals Number of Bedrooms 2 Schedule/Class PER OSCAR p Daily Flow' Operating Capacity (ff O gpd Length p,5 nI00 ftJ�1^jy�—N Daily Flow' Design Flow 24G gpd Diameter 71st i Septic Tank Capacity(working) l ,JDO gal Number Receiving Soil Type(1-6) 4 Separation O. S ft Receiving Soil Appl. Rate C' ,W gpd/R' Orifices Required Primary Area d Go ft2 Total Number of Orifices _ h. ______ Designed Primary Area {s+ ft2 Diameter l7Kct� in Designed Reserve Area 4.10 ft2 Spacing PER OSCAR in Trench/Bed Width l5,'_ R Manifold Trench/Bed Length ____ ft Schedule/Class 40 Elevation Measurements Length ft Original Drainfield Area Slope 4. °/o Diameter in New Slope, If Altered 4 % Preferred manifold configuration used?®Yes ONo Depth of Excavation Upslope (o in Transport Pipe from Original Grade Down-slope '1- in Schedule/Class 40 Designed Vertical Separation 7 t'1. in length 55 ft Gravel-based Drainfield Required? OYes®No O Diameter 1 in Pump Required? ®Yes ONo Dosing and Pump Chamber Pump/Siphon Specifications Number of doses/day -l-b\ Diff.in Elevation Between Pump& Uppermost Orifice e ft Dose quantity C,5& gal Drainfield Squirt Height/Selected Residual(head) ld.bv ft Chamber Capacity(flood) 1000 gal Uppermost OrificeOHigher OLower than Pump Shutoff Pump controls: Please check those required. Capacity @ Total Pressure Head Q sip gpm 2 Timer Ei Elapse Meter l�Evcnt Counter Calculated Total Pressure Head l(i-6 id R t` ;v ifl Tidtel•,Para on. ,Pump off Comments DESIGN FORM —PAGE TWO Assessor's Parcel Number.22004-11-00070 Permit Number: SWG �c�—(e ` OC) X3 DESIGN CHECKLISTS Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch VI Test hole locations V( Drainfield orientation and layout Reference depth from original grade. V Soil logs Trench/bed dimensions and ' Septic tank Property lines critical distances within layout p y ' Drainfield cover V Existing and proposed wells V D-Box,/Valve be. locations within 100 ft of property Reference depth from original grade p p y � Septic tank/pump chamber and restrictive strata: it Measurements to cuts, banks,and locations Laterals, trench/bed, top and surface water and critical areas V Observation port location bottom Location and orientation of V Clean-out location V Curtain drain collector curtain drain and all absorption lj' Manifold placement V Sand augmentation components Orifice placement Other cross-section detail: Location and dimension of (jj Lateral placement with distance V Observation ports/clean-outs primary system and reserve area to edge of bed Other Information Building V Audible/visual alarm referenced Yes No Direction of slope indicator Scale of drawing shown on scale 4j O Design staked out Waterlines bar ' ❑ Recorded Notices attached 16 Roads, easements, driveways, Ur Elevation benchmark and relative id O Waiver(s) attached parking elevations of system components V O Pump curve attached North arrow and scale drawing V O Evaluation of failure shown on scale bar Non-residential justification ❑ ❑ Waste strength ❑ ❑ Flow DESIGN APPROVAL The undersigned designer must be not/ d b ius (le time of installation ©Yes GD No -ZG. -2iu Signa reofDesigner 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 on-site regulations: Enviroi ental Health pecialist Date CAUTION: DESIGN APPROVAL IS VALID ONLY UNDER THE FOLLOWING CONDITION: ✓ The design is stamped "Approved" by Mason County Public Health. �t ✓ 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. Revised: 6/l 1/2025 OSCAR— Preliminary Design Summary Lowridge Onsite Technologies oscaronsite.com (877)476-8823 Project Project description Site address Tax account I parcel# Designer(company i 1 ] Phone 1'"� State Product Washington OSCAR X02 -,. ^, Designflow 240 gpd __el Drawing ref OSXO2-240-7S Generated 8/18/2026,7:01:14 AM Reference OSC-20260818-0701 OSCAR X02 • Washington 0sx02-240-7S Do:inload PDF Copy design link Design conditions—Washington OSCAR X02 OS-100 coils 240 gpd - loading rate 0.6 sloped 4% supply pipe 1" Printed from the OSCAR Calculator • oscaronsite.com preliminary, requires licensed sign-off Zone summary • 1 zone • OS-100 ZONE FLOW COILS LATERALS BASAL FOOTPRINT MIN FLOW TDH Zone 1* 240 gpd 2 2x1 400 ft' 16' x 26 4.6 gpm 8.4 ft TOTAL COILS (NEED 2a) COMBINED BASAL AREA COMBINED FOOTPRINT C-33 SAND (EST., «15%) 2 400 ft2 416 ft2 10.9 yd3 GOVERNING PUMP (ZONE 1) 8.4 ft TDH Each zone is a separate drainfield with its own hydraulics. ♦ = governing zone for pump sizing (zones dose one at a time, so the pump is sized off the largest zone, not the sum). Sand estimate = basal area x sand depth + 15% for waste and compaction. Preliminary; requires licensed sign-off. ZONE LAYOUTS & CONNECTIONS Zone 1 2 coils 2x1 Purple -coils • mown ` tubing • teal =supply manifold grey= hush manifold (coil, per lateral) COIL 4% SLOPE 0-33 SANG PREPARED SOIL SURFACE 6- � � — a" SE N-5 OSCAR cross-section - 6" upslope / 9" downslope under coil 1:1 side slopes 15.7' L OO 2 . OS-100 coils 2 laterals 1 coils/lateral - single row on contour COIL 4% SLOPE C-33 SAND PREPARED so:' SURFACE 6•• SECTION NTS C-33 sand bed 6' upslope / 9" downslope under coil - 1:1 side slopes ri COILS LATERALS BASAL AREA FOOTPRINT 2 2 400 15.7' x 26' single zone 1 coils each ft2 L x W ZONES AERATORS 1 1 max 12/zone 1 per 500 gpd BASAL WIDTH (MANUAL) 26 ft (limits a-26) Auto 15.7' x 26 410 ft2 (need 400) F.l RECOMMENDED KIT 0 OSCAR-X02 residential (single-zone) covers 0-500 gpd - selected for your 240 gpd design flow. Panel LF1P-RF-ARA Headworks HWN-.7-RF Pump LOT-30 Floats Normally-open float switches (2) Aerators 1 Misc Misc fittings Manual-headworks alternative:XO2M—headworks HWN-0.7-MAN. y Find the wiring diagram for the LF1P-RF-ARA panel — ❑ Headworks drawing (HWN-.7-RF) r Kit numbers per Lowridge kit sheets.Confirm final parts on your order. Q Hydraulic calculations Min.flow:total emitter flow + flush flow = 4.6 gpm ` f Total emitter flow: 2 coils x 0.7 gpm =1_4 gpm s �`^�' �- Flush flow: 2 laterals x 1.6 gpm =Ljgpm Friction loss: 30(4.6147)^1.85 = 0.4 ft(1" pipe, K=47) CEP 0 il 2816 Elevation gain:?_ft r"' C-Ji"!'' E CNYri,il ?4LTH TDH:0.4ft+eft = 8.4ft(over 30ftof 1" pipe) rr Under the 50 ft limit—OK. Q Dimensions rounded up to the nearest foot(with manual minimum basal width enforced). Conservative;confirm half-foot matching with your reviewer. (' Other layouts, including splitting the basal area into multiple runs to fit the site, may apply.Select 'Add a Zone' in the Zone section. Q X02 tanks- Illustration 1 -plastic or concrete Treatment tank (min) 1,000 gal Septic chamber (2/3) 670 gal min Aeration chamber (113) 330 gal min Discharge tank (min) 1,000 gal Clarifier chamber(2/3) 670 gal min Pump chamber (1/3) 330 gal min Aerators 1 XP-80 (one per 500 gpd) Minlnwm tank size is proportional: 1,000 gal per tank at 500 gpd, scaled by design flow + 500 (example: 840 gpd = 1,000 x 1.68 = 1,680 gal min, so a 1,750-gal two-compartment tank works). Two equal double-compartment tanks, polyethylene or concrete. Treatment tank partition: a 4" bypass hole, OR a tee baffle extending 40-60% of the liquid depth. Discharge tank partition: a 4" bypass hole. The larger (2/3) compartment holds -670 gal and the smaller (1/3) -330 gal. Single-family residential flow may exceed 480 gpd up to 1,500 gpd on the residential design path; multifamily is commercial (X02-15 / X02-35 kit path). Source: OSCAR-XO2 Design Manual,Washington,June 2026 0 X02 tanks• Illustration 2 •water-tight compartment with tee baffles Treatment tank (min) 1,000 gal Septic chamber(2/3) 670 gal min Aeration chamber (1/3) 330 gal min Discharge tank (min) 1,000 gal Clarifier chamber (1/3) 330 gal min Pump chamber(2/3) 670 gal min Aerators 1 XP-80 (one per 500 gpd) Water-tight, structurally sound partitions with tee baffles (no flow-through ports). The discharge tank is turned around, but the chamber order stays the same only the compartment sizes change (here Clarifier 1/3, Pump 2/3)- Table 1-2 minimum liquid volumes apply; the clarifier chamber stays full (-330 gal). Source:OSCAR-XO2 Design Manual,Washington,June 2026 %AC 246-272A I per-coil 125 gpd COS-100) I basal - flow < loading rate 1 6" in C-33 sand under coil I dims round up to nearest foot I preliminary - for licensed sign-off Preliminary tool for engineers, designers,and regulators.A starting point for a design that a licensed professional reviews and signs —not a final engineered design. Homeowners may use this as a self-service planning aid only. Preliminary—requires licensed sign-off.This design summary was produced by the OSCAR Calculator from Lowridge Onsite Technologies' approved OSCAR design manuals. It is a preliminary sizing aid, not a final engineered design.Final selection, design, permitting and code compliance remain the responsibility of the licensed professional of record and the authority having jurisdiction. Licensed prole I pfa d: "(t tiv llr ' Y License #: St u•-113 Signature: Date: U' -Zi..- -Iv l u v p v+ 'Id r ) Og ex W f i N u 4 bD ! � 9 ° ! N ���,•\� rF c fit. __________ //v<7 . LCr 7/i r &1 - o ; C ' Ce 1V A � C D 4 g G '0 iU . 11 l O o v ( O .. ; y H z m dY ' i o yS�/;�tyya` I � ✓ I