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HomeMy WebLinkAboutSWG2025-00218 ON-SITE SEWAGE SYSTEM APPLICATION - SWG Application / Design / As-Built - 6/16/2026 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: SWG2025-00218 CAU NV)) APPLICANT GOLD FRED H JR & LINDA S Phone: Address: PO BOX 263 BELFAIR, WA 98528 OWNER GOLD FRED H JR & LINDA S Phone: Address: PO BOX 263 BELFAIR, WA 98528 SEPTIC DESIGNER PAULA JOHNSON* Phone: 360-898-2255 Address: 171 E VUECREST DRIVE UNION, WA 98592 SEPTIC INSTALLER JAMIE WORKMAN* Phone: 360-463-9573 Address: 120 E TIMBERLAKE DR SHELTON, WA 98584 Site Address: 200 NE CHINOOK DR Primary Parcel Number: 123303200110 Permit Description: Conforming repair 3bd pressure trench Permit Submitted Date: 06/10/2025 Permit Issued Date: 06/17/2025 Issued By: Rhonda Thompson Current Permit Fees Paid: $825.00 (additional fees may be required upon installation of system). Permit Expiration Date: 06/16/2026 (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 ONLYreetti MASO N COUNTY DATE RECEIVED: OU - Z025 cn D c cA AMOUNT RECEIVED: ��� !;_CE:JE08'!. co m Public Health & Human Services ° �, G V, ii Environmental Health 360-427-9670,ext.400 or 360-275-4467,ext.400 S W G (A o 415 N.5th Street-Shelton,WA 98584 20(ems O ` Z C/t ON-SITE SEWAGE S_ EM APPLICATION E x m n �...d PHONE rn APPLICANT LLL���---��� Fred & Linda Gold M:13 4_,-, (360)801-2974 _ z MAILING ADDRESS-STREET.C TY STATE ZIP CODE g P.O. Box 263 Belfair WA 98528 co L--1 .-, \, .. SITE ADDRESS•STREET.CITY ZIP CODE f1(1 {I r `\ 200 NE Chinook Dr � z Belfair WA 98528 I NAME OF DESIGNER ---1 PHONE I N Arrow Septic Designs, Inc 1 T (360) 898-2255 I CA) NAME OF INSTALLER G"-.-1 co PHONE ° Workman Contracting (360)463-9573 R- 7, Iw PERMIT TYPE(select one) DRINKING WATER SOURCE O IF RESIDENTIAL OSS F COMMUNITY OSS F COMMERCIAL OSS 5 PRIVATE INDIVIDUAL.WELL b"PRIVATE TWO-PARTY WELL Z I O TYPE OF WORK(select one) it PUBLIC WATER SYSTEM ENEW CONSTRUCTION/UPGRADES W-REPAIR/REPLACEMENT OTHER DETAILS(se'ect al the!appry) 0 TAB,E X REPAIR I W 0 SURFACING SEWAGE 21 EXISTING FAILURE 0 SHORELINE SUBMITTALS c�MI,7' C1 �r I N In.DESIGN FORM(REQUIRED) SEPTIC DESIGN(REQUIRED) BEDROOMS j LOT SIZE WAS LOT CREATED AFTER 4/10025? 6WAIVER(S)(IF APPLICABLE) 3 BR •27 ac ❑ YES Q NO n 1 XI DIRECTIONS TO SITE AND SITE CONDITIONS (ex:ocAed gafel Go out Hwy 3 toward Belfair and turn (L)onto WA-300 W/NE Northshore Rd.Turn (R)onto NE Mission Creek I CD Rd.Turn (R)onto NE Seitz Dr.Turn (L)onto NE Kimberly Dr.Turn (R)onto NE Chinook Dr. Destination on (R). !- gray and brown 2-story house. "200" on red post by driveway. O WARNING: GPS might take you on a wild goose chase because there is a road that used to go through, but is I — now blocked from through traffic.Try to follow these directions to avoid unnecessary drama. SITE MUST BE FLAGGED FROM MAIN ROAD AND TEST HOLES MUST BE FLAGGED WITH TEST HOLE NUMBERS. O OFFICIAL USE ONLY BELOW THIS LINE UPGRADE r FAILURE SOURCE(tor reporting purposes) 0 VOLUNTARY 0 MAINTENANCE/PUMPING ❑BUILDING PERMIT 0 HOME SALE ['COMPLAINT 0 OTHER: INSPECTOR SOIL LOGS COMMENTS!CONDITIONS 71-0 : b ,iOInS ,,ed ;IN ----iu- - bb-N-wv\ li 6.(1 "'f'li b \ t "0(1 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 FINAL APPROVAL. INSPECTOR SIGNATURE DATE APPLICATION EXPIRATION DATE APPLICATION APPROVED!ISSUED BY DATE 12 \w �1)', 6//07s . 6l1 (l2c 1QirQXY\. 1YJ ) 17jam' THIS FORM MA Y BE SCANNED AND AVAILABLE FOR PUBLIC VIEW ON THE MASON COUNTY WEBSITE Revised:4/14/2025 DESIGN FORM—PAGE ONE Assessor's Parcel Number: 1 2 3 3 0 — 3 2 — 0 0 1 1 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. ''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 pacer size: 11"X 17" Permit Number: SWG 2bz 5-60z lb Designer's Name: Arrow Septic Designs,Inc Fred&Linda Gold Designer's Phone Number: (360)898-2255 Applicant's Name: 171 E Vuecrest Dr P.O.Box 263 Designer's Address: Mailing Address: Belfair WA 98528 City State Zip Union, WA 98592 City State Zip Designer's Email paulaj@hctc.Com DESIIGN PARAMETERS Treatment Device ❑Glendon 0 Sand Filter 0 Mound 0 Sand Lined Drainfield 0 Recirculating Filter ❑ATU L.I Other Treatment Level(check all that apply): ❑A 0 B 0 C 0 BL1 ❑BL2 0 BL3 ❑E ❑N Drainfield Type ❑Gravity lit Pressure Cif Trench 0 Bed ❑Sub Surface Drip Septic TanWDrainfield 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 3 Receiving Soil Type(1-6) 3 Separation 5 ft Receiving Soil Appl.Rate 0.8 gpd/ft2 Orifices Required Primary Area 450 ft2 Total Number of Orifices 30 Designed Primary Area 450 ft2 Diameter 3/16 in Designed Reserve Area 450 ft2 Spacing 60 in Trench/Bed Width 3 ft Manifold Trench/Bed Length 150 ft Schedule/Class 40 Elevation Measurements Length header ft Original Drainfield Area Slope 1 % Diameter 1.25 in New Slope,If Altered 1 % Preferred manifold configuration used? SC Yes ❑No Depth of Excavation Up-slope 24-36 in Transport Pipe from Original Grade Davin-slope 24-36 in Schedule/Class 40 Designed Vertical Separation 29+ in Length 50 ft Gravel-based Drainfield Required? LTI Yes 0 No Diameter 2 in Pump Required? El 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 6t Higher 0 Lower than Pump Shutoff Pump controls:Please check those required. Capacity @ Total Pressure Head 17.7 gpm 'Timer 0 Niapse Meter ❑y vent Counter Calculated Total Pressure Head 13.23 ft If Timer: Pump on 2 minutes ,Pump off 6 hours Comments APPROVED JUN • 2025 Revised:4/14/2025 1t e- / MASON COUNTY ENVIRONMENTAL HEALTH RET , DESIGN FORM—PAGE TWO Assessor's Parcel Number: 1 2 3 3 0 — 3 2 -- 0 0 1 1 0 Permit Number: SWG DESIGN CHECKLISTS Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch it Test hole locations g Drainfield orientation and layout Reference depth from original grade: Ig Soil logs 6t1 Trench/bed dimensions and ' Septic tank Pi Property lines critical distances within layout 111 Drainfield cover ❑ Existing and proposed wells D-Box/Valve box locations Reference depth from original grade within 100 ft of property Eig Septic tank/pump chamber and restrictive strata: ❑ Measurements to cuts,banks,and locations 6af Laterals,trench/bed,top and surface water and critical areas g Observation port location bottom ❑ Location and orientation of fig Clean-out location g Curtain drain collector curtain drain and all absorption g Manifold placement 0 Sand augmentation components g Orifice placement Other cross-section detail: ig Location and dimension of Lateral placement with distance if Observation ports/clean-outs primary system and reserve area to edge of bed g Other Information Ig Buildings lg Audible/visual alarm referenced Yes No Iii Direction of slope indicator l31 Scale of drawing shown on scale C� 0 Designstaked out El Waterlines bar D l'Recorded Notices attached g Roads,easements,driveways, It Elevation benchmark and relative 0 g Waiver(s)attached parking elevations of s tem components g 0 Pump curve attached g North arrow and scale drawing H g 0 Evaluation of failure shown on scale bar GJ Non-residential justification 4,:* ❑ if Waste strength 4l ❑ lif Flow G '1E ' � j • � , M rt. The undersigned designer must be notified ,, i ler • *j�,. . i �s.."%, •n g es ❑ No .� .<- cc (o—?�S Signature o iesigewt+R•s 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: CalA (0 (1-1 11/5-- Environmental Health Sp ialist Date CAUTION: DESIGN APPROVAL IS VALID ONLY UNDER THE FOLLOWING CONDITION: i ✓ The design is stamped"Approved"by Mason County Public Health. / I ✓ The Onsite Sewage Permit has not expired,the Permit Expiration Date is: (�il 40 Uo ✓ 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 Arrow Septic Designs 171 E.Vuecrest Dr. Union, WA 98592 June 6,2025 Mason County Department of Health Services 415 N 6th St Shelton,WA 98584 RE: Fred& Linda Gold(Parcel#12330-32-00110)Evaluation of Failure Dear Inspector: Attached is a replacement septic design for a property located at 200 NE Chinook Dr, Belfair,WA 98528. There is an existing 3-bedroom home built in 1982 that ties into a gravity septic system of the same era. The existing system has a 1,200 gallon 2-compartment concrete septic tank followed by a d-box and a gravity the drainfield. som epowner was having trouble with slow drainage o septic and at arec recent pumping,there was a high documentation. Th effluent level and the drainfield was not accepting water. According to service records,the existing tank appears to be properly sized and in acceptable condition and may be re-used if the installer determines it is in acceptable condition. An effluent filter has been added to the existing tank and risers with lids to the surface and also a new cleanout would also have to be added. If an replaced,a new 1,200 gallon minimum a newcl 1,000-gallon punt mp chamber.tic tank If not used,the old tankuent filter would is to required.e The septic tank will be followed by g decommissioned or removed. The new drainfield consists of 450+ s.f. of shallow pressure trenches using an application rate of 0.8.The system will also have a control panel including timed dosing,a counter and elapse meter to prevent overuse and facilitateongoingno operation enance. This is a conforming repair with 24"+of vertical Thereare surface water or well setback issues and we have designated a full reserve drainfield separation. area. The old drainfield is to be abandoned in place. The property owner's contact information is as follows: Fred& Linda Gold 200 NE Chinook Dr Belfair, WA 98528 (360) 801-2974 If you need further information,please contact my office at(360)898-2255. SincerelAk APPROVE D JUN172025 MASON COUNTY ENVIRONMENTAL HEALTH RET • %* 510C349 '+ ON er Treatment System Designer EXPIRES 1 2st-a �2' A- � s1' ISP,T-1 R — 3.1o51ePE r� 2 - iC 5 -t �� S I - 5 rv.ih }o Qde -XL(' N I ?( ,/N,,, egtmAk,$), e e ......„ _ -,--,E,,i (.:_ti- 5 6 iglill A S L . C . 10,) 17- _ i • E. �� E E�� 51 ' . -1_____---, L3A__ APPROVED ec �_.34 — --�I E xts-c; ® JUN 17 2025 1 3 O F\ 0 { o MASON COUNTY ENVIRONMENTAL HEALTH . cleo 1- Z4` x 4c' 0 o 2GL1' _ RET 0 i \o' d t tLi Ir(j \4r -7 iP'''ot way �t�,...., ,,,,.. ,i„,..•,,,... sp� oar ' r, „_..) ,. 4,. ,:.. .. : ‘.. ..,,,.:,. 1 I 51 Ge349 ..V\ Is ice PAULA JOY JOHNSGN \I) ) i 1-------* p`{ Ll'e pn r LiGsCvgEts 5c IRiv�1� . �t.. PF.xa�it:Fs�911\/�S +�S,D (o- t- ems 39 ' , . -` i wnTER He_ \K ` `AI3E KL Di 5 c A�.E : i 2`-' 0 Audio-Visual Alai c 1 3 1 t O to 3e 4C CeanoUt Pz.s`7 Ft-AR •X1S-'"9 or NI 3. Ce 1200 ilon Sep'dc Tank -(ZD + L( ti DA G D L D 2-Co partment with Effluent Finer 12pc2LE1-4:1 t2330- 32-- 7 l C Add Gallon Pump C? - oer 2-0 C NE C I7.1EK D R - G Valve Control Box F)F LPPtIR) u,DR itSSZ- © Oldo F- -k-o bR.- -3 6 reoil-vetso_,- oc-Tccts,..&-ee-c_3:z rr �� � p n 7 NO-- 7-k.2:5`' La_A-za--k.k._ , -q2sL.4:\.1_7-A-W42-- 3(Qrl6te -f CIA eoc G 24 I'de�� w>col ,' 1e* O(1•\(, Ir)PrZ -1- i , 1 IJAI- &RADk A A- c.oveck Z 24-3b fak0,04'1 ' __ Lis"L.g.4-.,,s,_ (4 S- t ° IS- 2_,..:, _ti___,. z/.2) — ----, Iti:: 4..... 4/ 1 ''--e."" ‘le A.* *) k i'011 l yei Irg; t. q.p3 7,, �"j; PAULA JOY.JO ^ '? j �" •La.1,1Sbl .N1 �\ APPROVED 0 t ;i JUN 17 2025 591tat� eF Ffot,E MASON COUNTY ENVIRONMENTAL HEALTH 1 l ro RE.s-n2lct-IvE moat RET _ . 1INNs-$cc-Ktsv` SCREW ON CAP cSL.�. . ,cc c If rr 6 Ir IS" Z OR NOTE DEGREE ELBOWO=OBSERVATION PORTS--TO BE 4" EEELB91JPVC PIPE FROM BOTTOM OF TRENCH • TO FINISHED GRADE. REMOVABLE EN\45 CAP SHALL BE INSTALLED ON DIT ., .j i OBSERVATION PORT PIPE. GLUED ONDETAIL CLEAN OLT TEE AT BOTTOM.- IN SYSTEM. MINIMUM OF '' �J NOTE, CLEANOUT TO BE FROM 0 TO 6 LATERALS ARE TO BE CENTERED INCHES NBELOWTFINISHED SHE GRADE. OUT IN TRENCHES MARK REQUIRED AT END OF EACH LATERAL. 50 ' TRENCH END MANIFOLD v (600" ) 1 0 ORIFICES) ORIFICES OC 30`r FROM MANIFOLD 31D°rFROM ELBOW 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 Total Lateral Length 150 Total#Orifices 30 GPM = 17.7 Dynamic Head Calculations Selected residual pressure: 2 ft. Length (Ft.) #Orifices Transport Pipe 50 30 0.29 ft. Feeder Total Lateral Line Length Lateral#1 50 2 52 10 0.29 ft. Lateral#2 50 7 57 10 0.31 ft. Lateral#3 50 12 62 10 0.34 ft. Total Elevation Lift 10.00 ft. Total Dynamic Head } 13.23 ft. 4 I ,,,;',, r c. f r 51OO 49 ':<( ri a6 PAULA JOY JOHNSON k 'L'iOnCiSs8 UESiGfitER APPROVED JUN 17 2025 MASON COUNTY ENVIRONY,E!rTAL HEALTH RET • Bronze construction available(139 series) • 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 5 PUMP PERFORMANCE CURVE 1- performance is critical, this robust _.- _ Aaot� a1:,:as family of pumps is known for reliability, _ ,■■■.■■■■. durability and performance. These ,■■■■■■■11111 pumps are especially suited for harsh ' r environments.Zoeller's cool run design 1 ■,������� and corrosion-resistant,powder coated ..■.u■��� C epoxy finish add up to a long-lastingill, w .■„■■■■■■■ trouble free product. ,gai■■■■.■■ m 31 t ��,1������� 11 T APPLICATIONS: r • STEP or onsite applications ,� .. .uE■����� IC • Water transfer -- x ■■■.,■.■�� • Light commercial dewatering • s �■.■MINIII 2 arim..n.um. SPECIFICATIONS: �1 CAINIIMI • 1-1/2"NPT discharge PglkMIL,�`M� • 1/2 HP through 1 HP MADE IN THE USA WIMP 1 �� �'° ■■■■■„■�,■ • Available in automatic or nonautomatic 11316AMPIFI1SMIM W :7 �® • Model 137,139,140:1/2"(12 mm)spherical solids o I : .■■ ■�__13®■ capacity with vortex impeller CALMS • Model 145:3/4"(19 mm)spherical solids capacity with 6°s, u w '" '" • vortex impeller ,, w W PUMP PERFORMANCE CURVE t •�U�� �-E(�Y MODEL 151/152/153 Dose-Mate • 50_ This is our fastest growing line of effluent 14- 4s 153 I pumps.The 150 series is truly a workhorse designed for reliability under extreme 12- 40 conditions in an effluent environment. 0 35 150 series pump curves cover a wide range = 10— N\I of applications. They are well suited to '4 u 30 applications with low pressure pipe(LPP) t and enhanced flowSTEP systems.Zoeller's < 8— 25 151 cool run design and corrosion-resistant, 0 5— za powder coated epoxy finish, in addition to the hermetically sealed, oil-filled motor 15 and non-clogging vortex impeller add up to °. a long-lasting,trouble-free product. 10 .r, -` 2— 5 f APPLICATIONS: �'— � • STEP or onsite applications MADE IN THE USA 10 20 30 40 50 60 70 80 90 100 • Light commercial dewateringF IMN GALLONS � LITERS A , ,' Etpao tic 240 SPECIFICATION -o H,a� • 1-1/2"NPT discharge f`Fo • 3/10 HP through 1/2 HP © JUN 17 2025 • Available in nonautomatic or with a variable level piggyback mechanical switch MASON COUNTY ENVIRONMENTAL HEALTH • 1/2"(12 mm)spherical solids capacity with vortex RET thermoplastic impeller For more information,see Technical Data Sheet FM2784. ©All rights reserved. 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I MASON COUNI:EN.,,,..3.0a..,..,.VIRONMENTAliif.ALV . i \.. , / MitatE ? t _ : jr 1 I i 1 3 Wax s---.1= i 1 f ----, :g ,,' -- -->,-552AnstaaD TANK i .- i 1 .. .-:' - - J ' • t t / i 0:Gli liara.ALANW.i., -: 5 i 1 mogrAL mat gi---ri.Ftia ; i wg,zie-,EFQ--._-- i ! : ,-, -----4•T----4=4.-;.- maiDagaiDer I I i ------1-11b- L.? ; i ?•---..ette'snot 1 ...,.. , i 1 i I ,0`)0 G-c-z-Qtcw\ i . sfqi..___:_,—_ ---___..._____ - --,, — - ; ,: alv.afaFE. t ,• I 1 Pig-o k C)T, I ;. i i ••=12,--- -- f . - :...=irta=g5a2iii6-a - i t.t " 1.41\ •- t .QEEMZE:Oraii. i i -._, i9-141.549Egme,, I i rrYnC111.:t i t i Z I i "Nc.:•-FL--: Septic-ranks r1.-, z-:--i.r:-; -t.a:and-anis re-.61.,---e;:.;i-iy WAS.::I-tap-T..4:7 24-5-272C- ReuRE 2 I i • . 1 i --4 -,----,-'-',.-Lr '''";.-rt?'i--'...=•:..)=7 F 4E-it : , h qz• ::.'''rel"--S;-=::set-v,ttEe ;•••=7-1..F._-- r.tt,.. :•,--;;::=:.4.:.:_tz.. •..,...);-,=•.... _,.... ..„...,..,..,. • . • _ . ,.. ; ;1 I . , f i E Vg —1 C f b i j 4' • A a� Septic Deoigno, 3nc. OIL INSTALLATION & MAINTENANCE o i44 13"L�• Pressure Distribution Systems • '� �; r • 5100349 '• PAULA JOY JOHNSON' ' 1. Install Laterals with contour of the ground. 'ttNStd • iGNOti" +-►tom � , 2. Install trench bottoms level. 3. Install locator tape or rebar at each end of all drainfield laterals. Co-°t- t c 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 in o m •en 23. All transport lines under driveways or parking areas u b e• ''"'. shing. 24. Homeowner is responsible for all property lines and easements. JUN 17 2025 e-fra MASON COUNTY ENVIRONMENTAL HEALTH RET