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HomeMy WebLinkAboutSWG2025-00175 - SWG Application / Design - 5/12/2025 MASON COUNTY 415 N 6TH STREET,SHELTON,WA 98584 SHELTON:360-427-9670,EXT 400 L BELFAIR:360-275-4467,EXT 400 f Public Health & Human Services ELMA:360-482-5269,EXT 400 FAX:360-427-7787 On-Site Sewage System Permit: SWG2025-00175 COUf\rq APPLICANT KENYON ET UX LESLEY Phone: Address: 2623 STACY ST SE ROCHESTER, MN 55904 OWNER KENYON ET UX LESLEY Phone: Address: 2623 STACY ST SE ROCHESTER, MN 55904 SEPTIC DESIGNER PAULA JOHNSON* Phone: 360-898-2255 Address: 171 E VUECREST DRIVE UNION, WA 98592 Site Address: UNKNOWN Primary Parcel Number: 222333290050 Permit Description: New 3bd pressure trench with Class B waiver Permit Submitted Date: 05/12/2025 Permit Issued Date: 05/29/2025 Issued By: Rhonda Thompson Current Permit Fees Paid: $555.00 (additional fees may be required upon installation of system). Permit Expiration Date: 05/22/2028 (based on date of inspection) 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 Drain field 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 °ATFRECENED. 0,.- /�, 2 WD ` AMOUNT RECEIVED: RECEIVED BY, co 0 Public Health & Human Services /SAS 9 0 v Environmental Health 360-427-9670,ext.400 or 360-275-4467,ext.400 ��� ��Z� ^�� I �� o 0 415 N.6th Street-Shelton,WA 98584 CJV Z V) ON-SITE SEWAGE SYSTEM APPLICATION ITl APPLICANT P-ONE r"' rr 11 1 (507)993-6070 507)993-6070 I- Lesley Kenyon u MAILING ADDRESS-STREET.CITY STATE. 'a ZIP CODE ,--7 �C.1, g 2623 Stacy St SE N • Rochester MN 55904 CO SITE ADDRESS-STREET.CITY.ZIP CODE C] (--...4 4215 E Mason Lake Dr W (util , %0 Grapeview WA 98546 I N) NAME OF DESIGNER Q • ‘ P ` I N Arrow Septic Designs, Inc x • (360) 898-2255 N NAME OF INSTALLER CO PHONE 0 5 0.) PERMIT TYPE(select one) DRINKING WATER SOURCE 5 iir RESIDENTIAL()SS 5-COMMUNITY OSS F.COMMERCIAL OSS la PRIVATE INDIVIDUAL WELL 6 PRIVATE TWO-PARTY WELL Z I co Q.PUBLIC WATER SYSTEM TYPE OF WORK(se!er one) iff NEW CONSTRUCTION I UPGRADES I9.REPAIR/REPLACEMENT OTHER DETAILS(soled all that applyj 0 TABLE X REPAIR CO 0 SURFACING SEWAGE 0 EXISTING FAILURE 0 SHORELINE SUBMITTALS DESIGN FORM(REQUIRED) ASEPTIC DESIGN(REQUIRED) BEDROOMS LOT SIZE WAS LOT CREATED AFTER 4/12025? o IN tyWAIVER(S)(IF APPLICABLE) 3 BR 5.01 ac 0 YES I] NO 0 DIRECTIONS TO SITE AND SITE CONDITIONS'(ex locked gate; Head east on W Alder St toward N 6th St and take the 3rd exit at the traffic circle. Turn (R) onto N 13th St. Turn (R) onto E McEwan Prairie Rd. Turn (L) onto E Mason Lake Rd. Turn (L) o I o onto E Mason Lake Dr W. Destination on (L). On pole by driveway: "4211, 4311". Go straight -1 up hill,follow (R)fork. Old faded yellow sign at Y: "4215". Stop car at Y--walk up (R) path. SITE MUST BE FLAGGED FROM MAIN ROAD AND TEST HOLES MUST BE FLAGGED WITH TEST HOLE NUMBERS. I O OFFICIAL USE ONLY BELOW THIS LINE UPGRADE!FAILURE SOURCE(for reparnn9 purposes) 0 VOLUNTARY 0 MAINTENANCE/PUMPING 0 BUILDING PERMIT 0 HOME SALE ['COMPLAINT 0 OTHER: INSPECTOR SOIL LOGS I COMMENTS!CONDITIONS D-3o LDS L 5,, - Sa, a-s T+( RECORD DRAVv1NG AND INSTALLATION REPORT SOIL CODES: REQUIRED FOR FINAL APPROVAL V=VERY G=GRAVELLY S=SAND L=LOAM S=SILT C=CLAY E=EXTREMELY R=ROOT„c \✓�///j INSPECTOR SIGNATURE DATE APPLICATION EXPIRATION DATE APPLICATION APPROVED,ISSUED BY , DATE 5(zL{ - S 12zz� R1\7\109 VA,/ ! THIS FORM MAY BE SC NNED AND AVAILABLE FOR PUBLIC VIEW ON THE MASON COUNTY WEBSITE Revised:4/14/2025 __. .. .,�. ......-!YYfrl�6iS�dM4Y1)1fY/Y�r1n¢nu.�-..t .......,may. .., ...us.- —_w. . DESIGN FORM—PAGE ONE Assessor's Parcel Number: 2 2 2 3 3 — 3 2 — 9 0 0 5 0 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"X 17" PARCEL IDENTIFICATION Permit Number: SWG 2025- CO 175 Designer's Name: Arrow Septic Designs,Inc Lesley Kenyon Designer's Phone Number: (360)898-2255 Applicant's Name: 171 E Vuecrest Dr Mailing Address: 2623 Stacy St SE Designer's Address: Rochester MN 55904 City State Zip Union, WA 98592 , . aula hctc.com City State Zip Designer's Email P 1 r. .,DEShGIlI'1��iRAMETERS Treatment Device ❑Glendon 0 Sand Filter 0 Mound 0 Sand Lined Drainfield 0 Recirculating Filter 0 ATU IA Othe`i'0'atten zone Treatment Level(check all that apply): ❑A ❑B CC 0 BLI C BL2 0 BL3 XE 0 N Drainfield Type ❑Gravity lid Pressure G1'Trench ❑Bed 0 Sub Surface Drip Septic Tank/Drainfield Specifications Laterals Number of Bedrooms 3 Schedule/Class 40 Daily Flow:Operating Capacity 270 gpd Length 50 ft Daily Flow:Design Flow 360 gpd Diameter 1.25 in Septic Tank Capacity(working) 1,200 gal .‘ Number 4 Receiving Soil Type(1-6) 4 Separation 9 ft Receiving Soil Appl.Rate 0.6 gp.d/ft2 Orifices Required Primary Area 600 ft2 Total Number of Orifices 40 Designed Primary Area 600 ft2 Diameter 3/16 in Designed Reserve Area 600 ft2 'f Spacing 60 in Trench/Bed Width 3 ft Manifold Trench/Bed Length 200 , ft Schedule/Class 40 Elevation Measurements Length header ft Original Drainfield Area Slope 12 % Diameter 1.25 in New Slope, If Altered 12 % Preferred manifold configuration used? It''Yes 0 No Depth of Excavation Up-slope 12 in Transport Pipe from Original Grade Down-slope 9 in Schedule/Class 40 Designed Vertical Separation 14+ in Length 50 ft Gravel-based Drainfield Required? 0 Yes g No Diameter 2 in Pump Required? litf Yes 0 No Dosing and Pump Chamber Pump/Siphon Specifications Number of doses/day 4 Diff.in Elevation Between Pump&Uppermost Orifice 10 ft Dose quantity 90 gal Drainfield Squirt Height/Selected Residual(head) 2 ft Chamber Capacity(flood) 1,000 gal Uppermost Orifice g Higher 0 Lower than Pump Shutoff Pump controls:Please check those required. Capacity @ Total Pressure Head 23.6 gpm Er Timer 0 Birapse Meter ❑Event Counter Calculated Total Pressure Head 13.94 ft If Timer: Pump on 2 minutes ,Pump off 6 hours Comments APPROVED MAY 2 9 2025 MASON COUNTY ENVIRONMENTAL HEALTH Revised:4/14/2025 1 tit RET DESIGN FORM—PAGE TWO Assessor's Parcel Number:2 2 2 3 3 — 3 2 — 9 0 0 5 0 Permit Number: SWG DESIGN CHECKLISTS Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch Ed Test hole locations g Drainfield orientation and layout Reference depth from original grade: Ig Soil logs Ili Trench/bed dimensions and & Septic tank Property lines critical distances within layout Drainfield cover Existingand proposed wells Pr D-Box/Valve box locations P P Reference depth from original grade within 100 ft of property g Septic tank/pump chamber and restrictive strata: ❑ Measurements to cuts,banks,and locations Gd Laterals,trench/bed,top and surface water and critical areas g Observation port location bottom ❑ Location and orientation of g Clean-out location 0 Curtain drain collector curtain drain and all absorption fig Manifold placement ❑ Sand augmentation components g Orifice placement Other cross-section detail: lid Location and dimension of It Lateral placement with distance g Observation ports/clean-outs primary system and reserve area to edge of bed l2iBuildings g Other Information lig Audible/visual alarm referenced Yes No EZT Direction of slope indicator ur Scale of drawing shown on scale Ef 0 Designstaked out g Waterlines bar ❑ I!Recorded Notices attached g Roads,easements,driveways, p Elevation benchmark and relative &1 0 Waiver(s)attached parking elevations of system components g 0 Pump curve attached g North arrow and scale drawing ❑ [if Evaluation of failure shown on scale bar Non-residential justification,.,, ❑ Cf Waste strength X ❑ el Flow D 4'`' AA,R,":% AL The undersigned designer must be notified by'.yj.i" 'p" l e`, :.is-;lation Yes ❑ No Y tir ray i N PA 510. q� ,{ _'r Signatur t 'r) j N • Date EXAMS 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 lations: ' —foqyl-- C-- Environme 1 Healthpecialist Date CAUTION: DESIGN APPROVAL IS VALID ONLY UNDER THE FOLLOWING CONDITION: ✓ The design is stamped"Approved"by Mason County Public Health. 5—�(__ � ✓ 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:4/14/2025 3 65s LlIge, ki N'1 ... ` - _ ,,. „ rg� („. :, L �O pro � , Slo 1,6 ,. , ept.„, _ . < <,, Zq fi • , ,A..*M51-IA OLE, -r,, , t ' �/ , } 1 ' ` ' t / $ i. . J-i :4rav eltl�o si:1i':1Ss� L, : ' AP • VE 1?_^ "'_ 3} e i 319 _ ,, # t-20 �,.w.s Co,F. te•witirooz5 tt MAY 2 ; 2025 i �. • 1 2.0-25's9 s1 w:i.-� MASON COUN ,E,�'RONMENTAL HEALTH �a. -'- Ti ° to C-""1P• Q'mo*t 'ET A;2Ei: 1 r r . moo _ I Down S's oc.)2 t l W e i 1 2.GJ`rk-A :, Key: i n Aid Audio Visual_Alarm 1 1/ e Clean ut 5 ` / 2000: Sept=c Tank 2-Co parter_t with ESue_t Filter 1. 4y- ,,,, Chamber s 0 _000e lo�?amp �. w?'`S`d 0 Valve Control Box 1 ..r.5 \ .-- ,, ..o c'e...4; \ ..---- I I z -4-nd se;(-1.- Y F,I im t �' a; Scale. f"-�' ° - h`a:.• sic`Jaas )� J1 g 34 be fo Ito: § Yam' PAULA JOY JOHNSON \i E i 5-117 a Leste5 envon � parcel 1:t 22233-3Z-4 osc 3 ISno Pm . ,. ' i v5l G i ti© ' j i y215 E. MNSon LAke W Or. . r Grc,pevicewlwAG85�b ` iii1 il 0 i Valve Control Box with 125' Bali valves r I" Ss"I ik 2' Transport e ill / . • • - . . 1 6t 1)et•a i Typrd CS Ut ?25' Lateral t 25' Feeder Lstes r Typed Observation Pert 30' !I • APPROVED — ow- Go' ....-- MAY 2 9 2025 -\--1 E16 MASON COUNTY ENVIRONMENTAL HEALTH RET Typical ObservinicnParr Detailed Drain f field Layout Fined irate Stale: t' _ ,O• 'k') Gavel < TitEater Fabrc ca - ;,.,a.,! c? e o. 10 20' (4) 50' 1 .25` Sched. 40 -Laterals a.1 to 4 ( 1 0) 3/ 1 6" Orifices ' 6C," D.C. ,, ! � p' �J, �— t2s' Lewdr st 2 Per Lateral. 1st _asp 0r.f ice Rock { 6 from End of Trench. I y 30" k 36' A jSarevr-On CC7 ` _ J." 45 wee Elbow !e:erat Droinfield Cross-Section Vie ye • Not To Sack• A 1 End a- Deus - Oven Cut II • Removable Cap sixhl be a Oe.e vatlOrt Par �• (� Note 0 `.ram Bottom of Trench ot. w 1� Notes Ckonout to be from 0 to 6 etcxs :dew To Be 4' PVC erode.nished 'Q.. Fei sheC Grade. Ma-k axis with Reber. Clean Out T1n tao FOed on Observatim Port FCe \0 Req.ked at the End of Each Lateral. On Bottom with Glued-On Tee' �r^,��.� 51003A9 Sept S I ` 1 v Wren= of 4 Total ed•in System. •''�?> 4ut.A JOY JOHNSON'� Arrow Sept C D ' J ai tctust u�srcN�a • C 3 6 0) 8 9 8-2 2 5 s °�� t7(PIRSS 1 5—c2;Zs • Length Length Orifice # Distance from Distance from Lateral# (In.) (Ft.) Spacing Orifices Feeder Line(In.) Cleanout(In.) 1 600 50 60 10 30 30 2 600 50 60 10 30 30 3 600 50 60 10 30 30 4 600 50 60 10 30 30 Total Lateral Length 200 Total#Orifices 40 GPM = 23.6 Dynamic Head Calculations Selected residual pressure: 2 ft. Length (Ft.) #Orifices Transport Pipe 50 40 0.50 ft. Feeder Total Lateral Line Length Lateral#1 50 2 52 10 0.29 ft. Lateral#2 50 11 61 10 0.34 ft. Lateral#3 50 20 70 10 0.38 ft. Lateral#4 50 29 79 10 0.43 ft. 14 Total Elevation Lift 65 10.00 ft. Total Dynamic Head 13.94 ft. poo,,...A,18,,,,),, k. '"�i PAULAS JOY 3JOHNSON•. � 'Q. .. ,,GG c. ...N _(aUESraol• ;s I b.„^,s»,,s. ExPir�s��i��` S-(2-�s ali APPROVED MAY 29 2025 11 MASON COUNTY ENVIRONMENTAL HEALTH RAT 137 . ; • Bronze construction available(139 series) f : • High head version available(145 series) • Double shaft seal versions available for added protection Flow-Mate on models 140/145. For more information,see Technical Data Sheets FM2782,FM2783. In high head dewatering or effluent applications where pumping s performance is critical, this robust __ r 4 PUMPPERFORMaNCECORVF. AgXL 131!14e145 family of pumps is known for reliability, durability and performance. These r- ,1•111111111111111111111 pumps are especially suited for harsh • . ,■•■111111111•1111 environments.Zoeller's cool run design 1 ' ■'■■■.■■■II N and corrosion-resistant,powder coated `° C epoxy finish add up to a long-lasting, u •,■�■■■■■ trouble-free product. i. -1 •■„■•■•■■■=11111111111. "a APPLICATIONS: • ri ..,M■.■■■■ 'ii A • STEP or onsite applications V" m .■■`■■..■. m • Water transfer f,, ■ ,■■ ■ ■■■■■ • Light commercial dewatering ` ■■■■",.■■■ Z,•t SPECIFICATIONS: tSik F .■.',��"..ismums... • 1-i/2"NPT discharge ■■■■■n,`■. • 1/2 HP through 1 HP MADE IN THE USA ,, ■■■■■„�,■ • Available in automatic or nonautomatic A P r n RT,i7E1tr • Model 137,139,140:1/2"(12 mm)spherical soli o ' ■■■•■®■■®® capacity with vortex impeller ��,, •,. ID n " SO r 9 a • Model 145:3/4"(19 mm)spherical solids capacity with MAY 2 9 2025 r J U vortex impeller r,w 0s�„� s,A-, MASON COUNTY ENVIRONMENTAL HEALTH RET V rod.sNT ` PUMP PERFORMANCE CURVE MODEL 151/52/153 Dose-Mate so This is our fastest growing line of effluent 14- 4e 153 pumps.The 150 series is truly a workhorse designed for reliability under extreme 12— w , ' conditions in an effluent environment. 150seriespumpcurvescoverawiderange g 10- 3 152 of applications. They are well suited to i 3o applications with low pressure pipe(LPP) c 6' 26 NN.\\151 and enhanced flow STEP systems.Zoeller's cool run design and corrosion-resistant, o powder coated epoxy finish, in addition 6- 20 to the hermetically sealed, oil-filled motor 15 and non-clogging vortex impeller add up to 4- a long-lasting,trouble-free product. 10-" I / 2 APPLICATIONS: �� 5 • STEP or onsite applications o ) , MADE IN THE USA 10 20 30 40 50 60 70 80 90 100 • Light commercial dewatering USIISAIAJG1IftliLAME GALLONS LITERS I ( ( I I 1 1 I 1 I 2 SPECIFICATIONS: 0 40 80 120 160 200 24080 320 360 6, • 1-1/2"NPT discharge FLOW PER MINUTE • 3/10 HP through 1/2 HP • Available in nonautomatic or with a variable level piggyback mechanical switch • 1/2"(12 mm)spherical solids capacity with vortex thermoplastic impeller • For more information,see Technical Data Sheet FM2784. ©All rights reserved. ZOELLER PUMP CO. 1502-778-2731 1800-928-7867 I zoellerpumps.com 9 5 sls-c , • . ... -------—- - . i i r \ . • ; : w witiErA , 1 } ,• .. .,..,.. . ,. .-, , ===—, oti• ....., \ .----- -- ..... .........••••=m•• ---- • i . .".. ................ - ...••••••••... .. m. ....,•••••• • . ; 1 ..m. ...••• • '... ..... .'...' ". .".'. ... ..... 1 I 1 ............... .. ....0.,............ , ... • ... .. .. cd. . i I . I A•1•••...... 4.=. ..m, , .t ...-.' ..m.51! —.71•-. - , ; : ., :____...--- ---• ; ____; :. : -___________ „;,-r--- : 1 ----7.;_i.;-----r- -- '!__. ,=-• 1 P it 0 lit SWAGE sag= i .-----t-------1------"r-i _ , . 3 ri 1 ; : s 1 i ..... i . , ..._; 1 3 c , 1 k • I 1 i I . 1 • I ! • , t 4 _ , • i ; i 1 .. ....i. i i 1 _ 11 (75D-0 C,c&- 1 I N-Q59‘.*•.‘"--e".., 1 i . ; i I cc 1.2...................„... 1 i , APPROVED I \k,„--NA,..0,,v1/\ . I MAY 2 9 2025 i . 1 MASON COUNENRONYEN LTH 1 1 ...;.......,------,:. -=,---tcrr.-.0,--:a4i..--7- ,•.,7. .i.L ,,, TY VITIa Troei. 1 s 1 . 1 1.....- ..._:.. . ,,,, : Nana . ..---p 1 le... GUM N...N\ - ., 1 gi, VALVE a . i f ' 1 - • = _ ii -......„. i 1 - 17-', :.-_- IL i1 mem •-tr,..:,- r---; ..414., ;,;•-:-. It i f MUM '' . , :-. ' •:.J \'---->700Rgupwingo I 1 i ! .-. : Q.--7j: ; ;• 5 t i •: , ...c. i? E ; ; i • i- Mail' f er:7-4-Ze.-- : ; . I I I i • . • 1 Ereit WAra ALA.:I*, I I I7 i ; : 1 a6f: Fia•I:L= - za..w"-. i i 1 i ‘ ter-G-0 • :-,-;----.. /7 ! .--... ....i,,..,K.4.....5..,,,---.T:.-.. I 1 : • , ,, 1 , i: __-,-.-.-__: --= .7.--. lrb..,,___j ! 1 B ." -•''• '• --•'----- ..5ateSEri3=irgoE I i - \\K-V\-- - , . ...m:Fusgt.i.. . 1w, l .1 ,..:_mkii:g,•3,---LAt':€3E3MES, f . • iTYPT-eaL-1 i .?. .;: i *?:-1c.t.e.: Septic Tanits 7;u.5r.meet standards--F..,.;iiir,-.-d by WA(-..chapter 245272C 7-'mUta47--E- 2iEi a.iif 1 ‘.1 .- 1 i and mrznutect-urer must de on the Dept of Heath iist of mristare:O sews.er-tanks.''''' i - 3 1 . . Fl ki0 0 f ?) 2-Com artment Se tic Tank with Solids Pum in Second Chamber SECURED LID NTH 6AS TIGHT SEAL I ` .GRADE frflV :lie r 1 �i 1Ct10rgC o &_ r, ,'' - FL31- . FLOATING MAT [ Iii . Vraii ..... L N — ICI i I t • L__, SEDIMBITS _ IIIEGMBIS APPROVED MAY 2 9 2025 MASON COUNTY ENVIRONMENTAL HEALTH RET • Givcacvt Septic De is in..s, 9'Etc. ft� , o w4. 14 INSTALLATION & MAINTENANCE 0 N, Pressure Distribution Systems • 5100349 `r} PAULA JOY JOHNSON. 1. Install Laterals with contour of the ground. •L'ita151_ tEgiaKft ES 1 2. Install trench bottoms level. OCP1t5 3. Install locator tape or rebar at each end of all drainfield laterals. -�L-Z� 4. Install observation ports as indicated on the plot plan. One required at distal end of each lateral in drainfield with bottom extending to the drainrock/native soil interface. Glue "T"to bottom so Observation Port cannot be easily removed from ground. Install removable cap on top of port at final grade level. 5. Install drainfield during dry weather and soil conditions; any soil smearing must be eliminated by hand raking. 6. Install threaded clean-outs at the end of all laterals (cap must extend to within six inches of finished grade and be marked with locator tape or rebar). 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 6-12 months and flush back into tank. 9. Install anti-siphon valve above pump in pump chamber to prevent the pump chamber from siphoning into the drainfield. 10. 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. Waterlines must be a minimum of 10' to any tank or drainfield(a reduction to 5' may be obtained with a State waiver on lots that meet minimum lot size). Encase all water lines within 10' of septic transport lines 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 pumped or inspected every 3 years minimum. 17. No vehicular traffic over drainfield area or tanks. 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. 21. All manhole lids and access, sampling or inspection ports must have locking covers and 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 oopedn�inng..�aq 23. All transport lines under driveways or parking areas m t (�V V G Vcrushing. 24. Homeowner is responsible for all property lines and e e s. MAY 2 9 2025 MASON COUNTY ENVIRONMENTAL HEALTH RET