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HomeMy WebLinkAboutSWG2024-00465 - SWG Application / Design - 12/12/2024 SHEL A 985M MASON COUNTY 615NfiTHELTON: 60427TO70,EXT400 SHELTON:360d27-4467,EXT 400 BELFAIR:3fi0-275-048],EXT 400 Public Health & Human Services ELMA:360482-5269,EXT 400 FAX:360427-7787 On-Site Sewage System Permit: SWG2024-00465 APPLICANT PEARSON MICHAEL J &SHANNON C Phone: 360-349-3003 Address: 8371 SE LYNCH RD SHELTON, WA 98584 OWNER PEARSON MICHAEL J&SHANNON C Phone: 360-349-3003 Address: 8371 SE LYNCH RD SHELTON,WA 98584 SEPTIC DESIGNER PAULAJOHNSON' Phone: 360-898-2255 Address: 171 E VUECREST DRIVE UNION,WA 98592 SEWAGE INSTALLER COUNTY LINE DEVELOPMENT LLC Phone: 360-292-0909 Address: 1811 PADRICK RD CENTRALIA,WA 98531 Site Address: 8371 BE Lynch Rd Primary Parcel Number: 220297850040 Permit Description: New ADU 2-bedroom pressure system wl Class B vertical separation waiver Permit Submitted Date: 12112/2024 Permit Issued Date: 01/08/2025 Issued By: David Anderson Current Permit Fees Paid: $540.00 (additional fees may Le requlr upon Invarmon of system). Permit Expiration Dale: 12/27/2027 (baaedandaadmapewon) 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 MASON COUNTY i Z- l2 ?OZ'I COMMUNITY SERVICES 7 < N �/ m rySSLLyµ(OmnwMry X""SR�,IWlmmenullNFMI SWG Z0 / LJO O Z N ON-SITE SEWAGE SYSTEM APPLICATION 3 vvuwNT z Michael Pearson (360)349-3003 3 MPI LING PDORE63-61(tEEt.CITY STATE,ZIP WOE Shelton WA 98584 M She 8371 SE Lynch Rd VTEADDRE64 STREET CNY.➢P GGCE Fin �F IN same NAME OF OEGGNER �j (38D)$98-2255 I N Arrow Septic Designs o NAME OF INSTALLER m � m N County Line Development, LL (360)292-0909 FIRM,TYPE(mWl wwl ORIN✓J N3'MTER SOURCE ®RESIOENTIALOSS BICOMMIM"OSS 15COMMERCIALOSS I]FRNATE INDIVIDUAL WELL t�RRNATE TWUPARTY HELL IZ I� aI ,SUC WATER SYSTEM I I TYFEOPMCYIR(MW.) v I�INEWCONSTRUCTIONIUPGRADES �IREPAIRIREPIACEMENT jESUPFAGNGSG,,A,0EITWGFAILREREMI DSHORELINE SENEATTA'A O pi 64E ®�(DESIGN FORM(REOVIREDI .SEPTIC DESIGN(REOUWEDI eEDRODM6 2BR ADU 5.4 acres x I � LyWAIVER(3)(IFAPPLICABLE) MRECTION9TOGTEANOGTEGONUTIONS'.M".MWgw) Go our Arcadia and turn (R)onto SE Lynch Rd.Destination on (R). Yellow sign: "Pearson". Triple driveway, stay to(L), sign"8371". Drive past tan house. Go past steel carport with o 0 green roof. Go past cell tower. I I a to yiEYyS{SE{y WWI10<U AMO{ESIMYSSMUSIBERA4DFO MiTM ZEST MOLE NVYSERB OFFICIAL USEONLY BELOWTHIS IE OFGRAGEIFAILURE SWRCE(W�gNSry NRu"q VOLUNTARY �MAINTENANBFIPUMPING pBUILDINGPERMIT OHOMESALE ❑OOMI?IAINT cOTHER'. 7 INSPEC{ORSDILLOG6 92:0-I6' 615 (T)lV13) Aa at Ir 1-t MRMF (� topl(kt0/pr) i"it co3? t1t ' � '►7 RECORD DM W NG ANO INSTALLATION REPORT MI.G.E3'. V=VERY 6=GRAVELY S=SAND L... 9+81LT C=CLAY E=E%IREMELY R=RWTS APPW IREO FC�iIW�DISSVED INSYCCTOR 3IGXATLME W.TE APPLICATONERPIRATIOXDATE THIS FORM MAYBE SCANNED AND AVAILABLE FOR PUBLIC VIEW ON THE MASON COUNTY WEMSITE R Dlvr wB DESIGN FORM—PAGE ONE Assessor's Parcel Number: 2 2 0 2 9 — 7 8 — 5 0 0 4 0 A design will be reviewed when 3 conies of each of the following are submitted: Completed design form that has been signed and dated. v Scaled layout sketch,including all applicable items on checklist a Scaled plot plan,including all applicable items on checklist "Cross-section sketch,including all applicable items on checklist. This form may as erases and available for public view on nine Mason County Web site.Maximum pa,ner size: 1/"X/7" PARCEL IDENTIFICATION Perron\umber: SWG - CfD Designer's Name: Arrow Septic Designs, Inc Applicant's Name: Michael Pearson Designer's Phone Number: (360)898-2.255 Mailing Address: 8371 BE Lynch Rd Designer's Address: 171 E Vueaeet Dr Shelton WA 98594 Union, WA 98592 City state Zi City Smte Zip 71EStGN.PARAMETERS -'- Treatment Device ❑Glendon 6iofilter ❑Send Filter ❑Mound ❑Sand Lined Dminfield ❑Recirculating Filter,Type: O Aerobic Unit Make/Modcl ❑Disinfection Unit Make/Model Other: 50'attenuation Zone Drainfield Type ❑Gravity fir Pressure 511"French ❑Bed ❑Sub Surfssee Drip Septic Tank/Drainfield Specifications Laterals Number of Bedrooms 2 Schedule/Class 40 Daily Flow:Operating Capacity 180 gpd Length 50 It Daily Flow:Design Flow 240 gpd Diameter 1.25 in Septic Tank Capacity(working) 1,000 gal Number 2 ` Receiving Soil Type(1-6) 3 Separation 9 ft Receiving Soil Appl.Rate 0.8 gpd/ft Orifices Required Primary Area 300 f l Total Number of Orifices 20 Designed Primary Area 300 ft' Diameter 3/16 in Designed Reserve Area 300 ft? Spacing 80 in Trench/Bed Width 3 ft Manifold Trench/Bed Length 1D0 ft Schedule/Class 40 Elevation Measurements Length header 0 Original Drainfield Area Slope 5 % Diameter 1.25 in New Slope,If Altered 5 % Preferred manifold configuration used? liy Yes O No DepthofExcavation uµdope 12 in Transport Pipe from Original Grade ,e, 10 in Schedule/Class 40 Designed Vertical Separation 12+ in Length 30 ft Gravelless Chambers Required? O Yes O No OfOptional Diameter 2 in Pump Required? Id Yes [3 No Dosing and Pump Chamber Pump/Siphon Specifications Number ofdows/day 4 Diff.in Elevaion Between Pump&Uppermost Orifice S ft Dose quantity 8o gal Drainfield Squirt Height/Selected Residual(head) 2 ft Chamber Capacity(flood) 1,000 gal Uppermost Orifice If Higher O Lower than Pump Shutoff Pump controls:Please check those required. Capacity Q Total Pressure Head 11.8 Spin Iftime, StElapse Meter VEvent Counter Calculated Total Pressure Head 7.70 ft If Timer: Pump on 2 minutes ,Pump off� l a hours Comments 1 xsq;, I DESIGN FORM-PAGE TWO Assessor's Parcel Number:2 2 0 2 9 - 7 g -- 5 0 0 4 0 Permit Number. SWG DESIGN CHECKLISTS Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch R1 Test hole locations It Drainfield orientation and layout Reference depth from original grade: m Soil logs 21 Trench bed dimensions and Rf Septic tank 19 Property lines critical distances within layout if Dminfneld cover ❑ Existing and proposed wells Rf D-BoxNalve box locations Reference depth from original grade within 100 R of property � Septic tank/pump chamber and restrictive strata: ❑ Measurements to cuts,banks,and locations Q( Laterals,trench/bed,top and surface water and critical areas � Observation port location bottom El and orientation of 6d Cleanout location ❑ Curtain drain collector curtain drain and all absorption liff Manifold placement ❑ Sand augmentation components 16 Orifice placement Ed Location and dimension of p Other cross-section detail: Primary system and reserve area 21 Lateral placement with distance Ef Observation ports/cleanouts 61 Buildings to edge of bed Other Information Direction of slope indicator 16 Audible/vis referenced Yes No lil 61 Waterlines Rf Scale of dra on scale fff ❑Design staked out bar ❑ Recorded Notices attached Roads,easemenq driveways, �o, ., Rf ❑ Waiver(s)attached parking61 ❑ Pump curve attached 61 North arrow and scale drawing N ` ❑ frl(Evaluation of failure shown on scale bar A s,o a+n [A�•Ft, Non-residential justification ULA JOY JOHNSON'•, ❑ Waste strength N ❑ afFIOW DESIGN APPROVAL The undersigned designer must bTNtified by i taller at time of installation id Yes ❑ No Sign'1�� 12—t to pVED Sngnatare sngner DateApPR The undersigned has reviewed this design on behalf of Mason County Public Health and determined it to b2�jR compliance with state and local on-s' gulations: L7 JAN 0 8 � t s Envuonmental Health pecnalis p %COUNTYENVIRONMENTALHEA P DJA CAUTION: DESIGN APPROVAL IS VALID ONLY UNDER THE FOLLOWING CONDITION: The design is stamped"Approved"by Mason County Public Health 77� The Onsite Sewage Permit has not expired,the Permit Expiration Date is jZ(Z T—�.— 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 re uired. This form may be scanned and available for public view on the Mason County Web sit,. Updated Date: 12/72015 Plok Plan M- l., I Dea5pn (z) 3•x3;ri Pril-n Q eLjlloZR-jB -Sooyo $3l1 SE L4nel, 2d Sher Mllt 985�`1 �-�• �c}•r°"` K Scale I•�= �00 �--- "! a ioa z°e e� 3Jb •Abo^°i o 0. AJ b Z � em OAudio-Visual Alarm , - © Cleanout e°s"�' �� © 1000 Gallon Septic Tank 2-Comp2rmeat with Effluent FUter O4 1000 Gallon Pump Cbamber O5 Valve control Box 7 1 OIyL g�EENE %AAjIrALINE W�TWN 1 lo, OF piNy SEPfta cersPOr�ENr j i '7 53 i A°IE5T Note ! i ZY-Yp•• is � �x� ' //� pu Q� Cplv(aP1k0 � � \ / P.i.bpr m OP I^2rr✓J �1 oles fzA:l� ' PA LA JOY JOHNSON I cw i I PP&®VED MASON JAN 08 2o15 7 l OUNryfNVlI7ONMfNT 2 ME-1 DJA AC NfAUN Z 2?' r T..t Liu I _ gp' •�I yyw ra,TM pet W, ,LS' Oat Vtiv� Trim boat 3� o � ,r* Trim taarin Port coo° ,s' F. uw okl FJCE 5 Pq G+iV G Tr" ""`"'°' "' Detailed Drainfield Layout sr araa. 8ma i - id 4'to ,Y vr. rme o' ,o• m' L.. 31r 2� C . 12,J r o,00aav GAU.JCY JOHNSON/>j 3r e' msr ssr sa . lz+ Drainfield Cross-Section View ' ce Not To Smr Y � Eb. . Ip u.a p�YoV Po MgSON r s :a� r`.�ae r �eNr r rrMvn COUNry�RpB T Ozf O FrrYe ema. u.a .r .+n Nro:. w. m To r *Ift ftmmm G n n JNtl,r NMFNrA<HFgC NrpiN a w EN rt tr.r a ft.. n Tr Arrow Sept c Designs z '°" N""° b ft N C360) 898-2255 3 ,& , Length Length Orifice # Distance from Distance from Lateral# (In. (Ft. S cin Orifices Feeder3I- a(In.) Clean30ut lln.) 1 600 50 60 10 30 30 2 600 50 60 10 Total Lateral Len R1 100 GPM= 11.8 Total#Orifices 20 Dynamic Head Calculations 2 ft. Selected residual pressure: Length(Ft) #Orifices 0.08 ft. Transport nsport Pipe Feeder Total 20 Lateral Line Length 10 0.29 ft. Lateral#1 50 1 1 62 10 034 ft' Lateral#2 50 5.00 R. Total Elevation Lift 7.70 ft Total Dynamic Head er t= r y 510Y JO AULtE HNSON tfc�4s� Usr t;�a•• N>M , Appj ®o JAN 08 202 MASONCOUNry eNVIRD 5 5 DJ A NMEVr HIA4Ty Bronze canIIroman available(139 series) _a High head version available(145 series) x.a Double shaft seaLversionsavailable for added protection on models 140/145. Flow-Mats Fo M.M idonnoHon,see Tedmical Dam Sheets FM2282 FM2183. In high head dewatering or effluent applications where pumping i`z F,aP proaasw '. performance is critical, this robust _ wmnma+u familyof pumpsis knownforreliabiLity durability and performance. These pumps are especially suited for harsh environments.ZoejW5moLrundeAgn and corrosion-resistant powder mated epoxy finish add up to a Lang-lasting, trouble-free product APPLICATOxS: �„ . • 5TEPoromu.appka6all1 Y a • Watertransfer S_ Light commercial dewatering SPECISIAnEWS: • 1-112-NPT dischmge 112 HP through 1 HP MR,x E YU IN0 RM 0f THE USA • Available in aummetic or nonaummadc uiDllal • Model 137,139,140.1/2'(12 mm)spherical solids capacirywlth vortex impeller • o • Model 145:3/4'(19 mm)spherical solids capacirywith ,„„a,.�. �mNe vortaximpeUer n PUMP PERF ANCE CURVE MOD 151 52/153 Dose_Mataop-ep�1Q^`E" x This is our fastest growing line of effluent +a x pumps.The 150 series is truly a workhorse designed for reliability under extreme t1 conditions in an effluent environment +N 15oseriespumpcurvescoverawidemnge N of applications. They are welL suited to x applications with tow pressure pipe(LPP) e x +s+ andenhanced flow STEP systems.Zoeller's 0 cool run design and corrosion-resistant, a N powder mated epoxy finish, In addition to the hermetically sealed,oil-filled motor is and rum-cLogging vortex impeller add up m +Y a long-lasting trouble-free product. Y ti APPLICATIONS: STEPor.mW,appliwtkns ugh ° WIDE 1 N as b x n x N +°° Light cammerdaldewatering xRAWII GaDaS e ® + m uW ° SPECIFICATIONS' N naN pER NINII+F ��' 1-112'NPT disd+arge • 3110 HP through 1/2 HP f Availzbk in nonautomedc or with a variable Level Pp piggyback mechanicalswitch 1/2-(12 mm)sphen,.L solids capeciry with vortex O V thermopksticlmpeiter For more ijannonan,see Technical Data SheMFM2784. p�� C ALL righm reserved. ZOELLER PUMP CO. 1502-778-275pfM9�UN ia�Y IQ�UYR?✓ps.�® 9 wgp &.Am .......... ciao= No B*L;j3r ti pm f a SaDDto" 7&---T*ORAnWZ&D F.CW SEP—C TANK -j ll__Ll VALVE= mWWWATMAL&RMLEVEL zlu)ipEhzwv NORMAL TDGR Lvin W@0�r4 �vawoar INCUIrrm momao maw CHIRWVALVE. APpRoV JAN 0 8 2025 o"IUNrf CKAMPUML *' E"o*YC4.A, ,­, am� DJA �.FxGURE2 mgr��_4��.gs tanm avww Septic D"i9 +.J, Jac. r 1 INSTALLATION & MAINTENANCE Pressure Distribution Systems .10 US vnutA JOY JO Hank" C SE 1. Install Laterals with contour of the ground. w aes 2. Install trench bottoms level. 3 Install locator tape or rebar in each end of all lot drainfield laterals. 4. Install observation ports as indicated on the plot plan. Onk/nati u'es all inurrfacee. Glue h lateral in drainfield with bottom extending to the drainro "T'to bottom so Observation Port cannot be easily removed from ground. Install removable cap on top of port at final grade level. must be 5. Install drainfield during dry`weather and soil conditions; any soil smearing eliminated by hand taking-at the end of all 6. Install threaded a and bo marked with locator tapelateralsor rebaz emend to within six inches Of finished grad 7. Install audio/visual high water level alarm. 8. Install 1/8"mesh non-corrosive pump screen(min. 12 sq. ft. surface area, not to interfere with controls or floats.) Or pump screen may be substituted with Bio-Tube in septic tank and block under pump. Pull bio-tube every 2 moor to hs and flush flus the pump chamber 9. Install anti-siphon valve above pump n Pump from siphoning into the drainfleld. lo. Install check valve in Pump outlet line to prevent system from draining back into the PUMP chamber. 11. Tee to Tee construction between laterals and manifold with orifices oriented at 6 o'clock. Install laterals to the manifold with the orifices at 12 o'clock, (do not glue), after pressure test and Environmental Health Dept. approval,turn orifices down(6 o'clock)and glue laterals to manifold. Orifice shields may be used with orifices in the 12 o'clock position in lieu of turning the orifices down to the 6 o'clock position. 12.Filter fabric required over drain rock prior to back filling. If the drain rock extends above natural grade,run the filter fabric at least 2 inches down the trench wall. 13.Encase all water lines within 10, of drainfield and under any driveway/parking areas' 14.Divert all storm water runoff away from on-site sewage system. 15.No curtain drains allowed within 10' of the up-slope edge or 30' of the down-slope edge of the drainfield and reserve area. - 16. Have the septic tank and pump chamber pumper or inspected every 3 years minimum• 17.No vehicular traffic over drainfield area. 18'Inspect floats,clean filters, and test high water level alarm every 6-12 months as needed. 19.All materials and workmanship must meet County and State regulations. 20.Deviation from this design without prior approval from the Designer and Mason County Environmental Health Department will make this design null and void. oovers ana 21.All manhole lids and access, sampling or inspection Pons must have locking be located at ground level. 22.All pressure systems with a pump chamber outlet higher than the drainfield must have an anti-siphon valve or a 1/8"hole drilled in the discharge pipe above the pump to prevent siphoning.Ensure anti-siphon hole sprays down/away from tank opening. 23.All transport lines under driveways or parking �s must be encased to prevent crushing. 24.Homeowner is responsible for all property APPROVED JAN 0 8 2025 I °y MASON COUNTY ENVIRONMENTAL HEALTH DJA