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HomeMy WebLinkAboutSWG2025-00182 - SWG Application / Design - 5/22/2025 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: SWG2025-00182 APPLICANT SANCHELLI NATHAN L Phone: Address: 60 E ALDER PL E SHELTON, WA 98584 OWNER SANCHELLI NATHAN L Phone: Address: 60 E ALDER PL E SHELTON, WA 98584 SEPTIC DESIGNER PAULA JOHNSON* Phone: 360-898-2255 Address: 171 E VUECREST DRIVE UNION, WA 98592 SEPTIC INSTALLER MAPLES EXCAVATING Phone: 360-463-8474 Address: 911 SE ARCADIA SHELTON, WA 98584 Site Address: 60 E Alder PI E Primary Parcel Number: 320065000013 Permit Description: Repair: 3-bedroom pressure system with sand-lined bed Permit Submitted Date: 05/16/2025 Permit Issued Date: 05/23/2025 Issued By: David Anderson Current Permit Fees Paid: $825.00 (additional fees may be required upon installation of system). Permit Expiration Date: 05/22/2026 (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/onsite/oss-inspection-request.php or call: 360-427-9670, extension 400. OFFICIAL USE ONLY alit MASON COUNTY DATERECENED• OS- I(0 - 207 cn D C Cn AMOUNT RECEIVE 3ECE:VED S! CA - Public Health & Human Services dZ6 i c) m \*(. Environmentz:Health 360 27-9670,ext.400 or 360-275—467,ext.400 r (� (X� CD 415ty.6th Street- Shelton,VJA98584 SWG 2025` — 001 "� Q 73 • z Cn ON-SITE SE Y TEM APPLICATION z g• xi —',,PDLICAN" FNCNE m m Nathan Sanchelli 1M (360)742-9614 r _ MAILING ADDRESS-STREET.CITY STATE,ZIP CODE m ON 0 g 60 E Alder PI E © Shelton WA 98584 ;� W .0 • S'�7E ADDRESS-STREET.CITY.ZIP CODE � � same ZUS Q `'' NAVE OF DESIGNER L.�R II fl .:',C`.E ' I N Arrow Septic Designs, Inc `� (360) 898-2255 NAME OF INSTALLER l' I CQ PHCNE 0 I O Maples Excavating (360)463-8474 PERMIT TYPE(select one) DRINKING WATER SOURCE I O fir RESIDENTIAL OSS I'COMMUNITYOSS H C,jCOMMERCIALOSS 67 PRIVATE INDIVIDUAL WELL PRIVATE TWO-PARTY WELL Z TYPE OF WORK(select one) l PUBLIC WATER SYSTEM n NEW CONSTRUCTION I UPGRADES RE REPAIR/REPLACEMENT OTHER DETAILS(select all that apply) ❑ TABLE X REPAIR SUB 0 SURFACING SEWAGE EXISTING FAILURE 0 SHORELINE W lr-DESIGN FORM(REQUIRED) SEPTIC DESIGN(REQUIRED) BEDROOMS I LOT SIZE WAS LOT CREATED AFTER 4/12025? O pMIT7ALS i WAIVER(S)(IFAPPLICABLE) 3 BR .17 ac 0 YES ❑� NO 0 I DIRECTIONS TO SITE AND SITE COND:TIONS•(er locked gate) • O Head east on W Alder St toward N 6th St and take the 3rd exit at the traffic circle. Turn (R) I O onto N 13th St. Turn (R) onto E Oak Park Way. Turn (L) onto E Fir Dr. Turn (R) onto E 6 , O Alder Place East. Gray house with #60 at front door. Use man gate on (R) past giant o rooster. co SITE MUST BE FLAGGED FROM MAIN ROAD AND TEST HOLES MUST BE FLAGGED WITH TEST HOLE NUMBERS. I W OFFICIAL USE ONLY BELOW THIS LINE UPGRADE I FAILURE SOURCE(for reporting purposes) ❑VOLUNTARY 0 MAINTENANCE/PUMPING 0 BUILDING PERMIT ❑HOME SALE ['COMPLAINT 0 OTHER: INSPECTOR SOIL LOGS COMMENTS!CONDITIONS 1N1 :U— (Z "Lr5 II l- - al frq S tryjr4 ) *o kreopi l2-GC Ft/ itt4fC (i, 1a t) to t 'j 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. INSPEC R SIGNATURE DATE I APPLICATION EXPIRATION DATE APPLICATI A PROVED!ISSUED SY DATE 5/7?/7aK' 5/ZL/Zo26 t 5/ ipei-7,f IS F MAY BE SCANNED AND AVAILABLE FOR PUBLIC VIEW ON THE MASON COUNTY WEBSITE Revised:4/14/2025 DESIGN FORM-PAGE ONE Assessor's Parcel Number: 3 2 0 0 6 - 5 0 - 0 0 0 1 3 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 paper size: II"X 17" PARCEL IDENTIFICATION Permit Number: SWG ZOZ c -OD ig Designer's Name: Arrow Septic Designs,Inc Applicant's Name: Nathan Sanchelli Designer's Phone Number: (360)898-2255 Mailing Address: 60 E Alder PI E Designer's Address: 171 E Vuecrest Dr Shelton WA 98584 City State Zip Union, WA 98592 City State Zip Designer's Email paulaj@hctc.com :. ,: DESIGN PARAMETERS Treatment Device ' ❑Glendon 0 Sand Filter 0 Mound El Sand Lined Drainfield 0 Recirculating Filter 0 ATU LI Other Treatment Level(check all that apply): 0 A 0 B El C 0 BLt I]BL2 El BL3 El E 0 N Drainfield Type ❑Gravity I 'Pressure 0 Trench , RiBed 0 Sub Surface Drip Septic Tank/Drainfield Specifications Laterals Number of Bedrooms 3 Schedule/Class 40 • Daily Flow:Operating Capacity 270 'gpd Length 45 ' 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) 3 • Separation 2.5 ft Receiving Soil Appl.Rate 0.8 • gpd/ftz. Orifices Required Primary Area 450 ft2 Total Number of Orifices 76 • Designed Primary Area 450 , . ft2, Diameter 5/32 - in Designed Reserve Area 450 . Of, Spacing 28 in Trench/Bed Width 10 • ft Manifold Trench/Bed Length 45 '' . ft Schedule/Class 40 - Elevation Measurements Length 7.5 ft Original Drainfield Area Slope 1 ‘ % Diameter 1.25 in New Slope,If Altered 1 • % Preferred manifold configuration used? RI 0 No Depth of Excavation up-slope 22+24=46 • in Transport Pipe from Original Grade Down-scope 20+24=44 . in Schedule/Class 40 Designed Vertical Separation 20+ • in Length 30 ft Gravel-based Drainfield Required? Ig Yes 0 No - Diameter 2 in Pump Required? I111 Yes 0 No • Dosing and Pump Chamber Pump/Siphon Specifications Number of doses/day 4 , Duff.in Elevation Between Pump&Uppermost Orifice 8 'ft Dose quantity 90 • gal Drainfield Squirt Height/Selected Residual(head) 5 ft Chamber Capacity(flood) 1,000 '_ gal Uppermost Orifice stf Higher 0 Lower than Pump Shutoff Pump controls:Please check those required. Capacity @ Total Pressure Head 48.64 gpm Et' Timer 0 Elapse Meter ❑event Counter Calculated Total Pressure Head 17.44 ft If Timer: Pump on 2 minutes ,Pump off 6 hours Comments Revised:4/14/2025 1 s _,9 DESIGN FORM—PAGE TWO Assessor's Parcel Number:3 2 0 0 6 — 5 0 -- 0 0 0 1 3 Permit Number: SWG DESIGN CHECKLISTS Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch ❑ Test hole locations Eil Drainfield orientation and layout Reference depth from original grade: RI Soil logs lit Trench/bed dimensions and lif Septic tank • Property lines critical distances within layout Drainfield cover 0 D-Box/Valve box locations ❑ Existing and proposed wells Reference depth from original grade within 100 ft of property 0 Septic tank/pump chamber and restrictive strata: ❑ Measurements to cuts,banks,and locations QJ Laterals,trench/bed,top and surface water and critical areas lif Observation port location bottom ❑ Location and orientation of 621 Clean-out location 0 Curtain drain collector curtain drain and all absorption Ig Manifold placement 64 Sand augmentation components lifOrifice placement Other cross-section detail: 66 Location and dimension of Eg Lateral placement with distance g Observation ports/clean-outs primary system and reserve area to edge of bed Other Information 0 Buildings Eg Audible/visual alarm referenced Yes No 21 Direction of slope indicator Scale of drawing shown on scale 121 0 Design staked out ❑ Waterlines bar ❑ if Recorded Notices attached Ig Roads,easements,driveways, 0 Elevation benchmark and relative 0 1f Waiver(s)attached parking elevations of system components g ❑ Pump curve attached lig North arrow and scale drawing lif 0 Evaluation of failure shown on scale bar H.5 Non-residential justification L� 0 lif Waste strength ...4 0 El Flow DES.y * L The undersigned designer must be notified &. ns •j4 , tit. .. i ye• ion el Yes 0 No \�'2�: 1.349 � -4 :. i4 .P.AULA JOY JOHms p4.•: �-.� �� Signature o SE I% fai " f Date kJ The undersigned has reviewed this design on behalf of Mason County Public Wealth and ct4priped it to ® compliance with state and local on-s. regulations: ( SON00I/N ^��`•�2O25 c/2)720 � ) ryeNV/RO vironmental Health Specialist Date 'AM ' 'iVt4z titry CAUTION: DESIGN APPROVAL IS VALID ONLY UNDER THE FOLLOWING CONDITION: ✓ The design is stamped"Approved"by Mason County Public Health. �� l`4�� ✓ The Onsite Sewage Permit has not expired,the Permit Expiration Date is: Z2 ✓ 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 0 Arrow Septic Designs 171 E.Vuecrest Dr. Union,WA 98592 May 15,2025 Mason County Department of Health Services 415 N 6th St Shelton,WA 98584 RE:Nathan Sanchelli (Parcel#32006-50-00013) Evaluation of Failure Dear Inspector: Attached is a replacement septic design for a property located at 60 E Alder Pl E, Shelton, WA 98584. There is an existing 3-bedroom home built in 1974 that ties into a gravity septic system of the same era. Records indicate that the existing system has a 1,000 gallon 2-compartment concrete septic tank followed by a gravity drainfield with (2) 50' trenches(300 s.f.total). The owner has been having issues with the system being slow to take water and backing up. Recent service reports indicate the system is no longer taking water and effluent is returning to the tank upon pumping. The old drainfield is to be abandoned. The old tank is undersized and 50 years old so it is to be decommissioned or removed and replaced with a new 1,200 gallon minimum 2-compartment septic tank with an effluent filter. The septic tank will be followed by a new 1,000-gallon pump chamber. Because of extremely gravelly soils and being in a critical aquifer area,the new drainfield consists of a 450 s.f. sand-lined pressure bed with 24"of C-33 sand 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 facilitate ongoing operation and maintenance.This is a conforming repair with 12"+of vertical separation. There are no surface water or well setback issues and we have designated a full reserve drainfield area. The property owner's contact information is as follows: Nathan Sanchelli �,`' 60EAlderPlE A/AY232025 (360)742-9614Shelton,WA 8584 MASONCO0,/71, VrR please contact myoffice at(360) 898-2255. ��A f1/ E rA�X�L� If you need further information, Sincerely, Wit,I - 5100349 Y45.:� PAULA JOY JOHNSON 1%,•:..10 L'tatitE 'tat NM EICPIRFS /1 (.5"i Paula J.Johnson Licensed Onsite Wastewater Treatment System Designer 2(14Ercl _. — .— I —t I14 4-. •---',. ,., ., t... ,..,„ G. ..,z 6 1,6„.:,,.* .::„pch. , OAKtto,. PARK NO. 1 .,.., ''' '7,-,...•BA'4r>•w• 204,-1 •L.• '' 41 s SEC.6.T2014.R.3W,W.M. MASON COuNTY,WAS114NGTON ...114... \ We SCALE.r.loc• ii Pk- bsee C.-orectiqon c.'' ,..5ez.4ion Sub• it ei,v‘ston fried coviee n, Z741481 . , DOA Aorrocr oc4.....w. •C4,At PL,...,,OrDr,.) to1/7 14%.,. Mayor, Coemfy Qadriec ,org$ 4.z.ellz 1, I ' lif!'.:',"--.--•” s tt7.4 SF,: • "..‘ s;'f".• ''•' .-, _,,,, *8\—'.%*.T ,,, 1 , 1 ,„n ,.._ , ',.../ .7 r 4, :.----:.- _ •....- fr-4? 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MASON COUNTY ENVIRONMENTAL HEAL P '4 PREF"R£0 BY OLSON,FLCHER7,84.10'_D REMTVN,YULSNINGTON SHEET 2 OF 2 1 i " =2C p ' go :c, Zo 30 PLOT PLFI N A4.e -E. Ps-LD.t'-‘2. ?L-- E 4=t eST lA i-f.. I Witree, t ga x ,: " / GIL-g __:, ''fr,, wis.L.c.y RDtJr\ 931--tsn AS)• v� L Z,• 6 _1.2r1 Li S- > 12—WOE, \;t`':5?iaC—=r'' Q.s2,..J / tA S UO �m9 tS C V / ,yam ��� is:� .'.t eUJ49 ` \/ t�.� �'Q, .p�UlA JOY J©HNSON \ t...L.\S\ \o ✓ \ / c 5-LS-zs j t i:b° T l 0 \ \ 3�D oJp�Q,J_ �v?� fie_ x . •I1vt ,� �o�o yyy;T O `\ �L\ �` V r . .ev: 6'4 �2�• x Audio-VisualAlarm ®c; a,.1 / 0 Clea._out . \---ip ..„. !.) __ C 1200 Gallon Septic Tank �-- �J 2-Compartment with Effluent Filter / O 1000 Gallon Pump Chamber 4. / �i'ApPrwxima ,ot^ e 10�eL� X X. )C X x —J c eld D.G be gtprfl%- ---cc-C_tite_ 1.c.a4-10--. c040 ✓ e.a AP P■ O `iI U ewvhi ZS i o v, ea a tr i e- o J14 Ci MAY 2 3 2025 111111111111111171.. Tt-‘k) , r 1.1.e.j-;^ . I-1.141.11111111111.1111111111111111111;1111111111111111111111 C ka • • / . . 11111111.111.1111.1311141..... zs' .:7. ..14' ._) 5. i 32. ofZ\f"\ c' S.- 1-1.lZ- Xi K( Oa r .Cird.c 4` **WI.h . fit• • 5I G0349 L;'� PAULA JOY JOHNSON y L G.SZ�'- t«_ for cC i��cS C fS PIG vs'N'i Fc s..a t t EXPIRES 1 / o, S` far ?5-f 2C yaci4 I COrt,, ��e, L „ (, Kn aD ,z.$) pin Ir - - d , ', . . _i__ nil -11Z--- •. . - - Al 41' , c. ti -i- • ``4 ' '`A'4 S� 2c�.. 4,.;.[ac-` tc.' ..044.--. 67- 3.9,v--44- 4terrwesk e.,,-- -v._ 9____5_2,tk,.. jr. • 4 i a ‘ Z r�s� ♦ �c t yfyBw•rtr 4) I ' _' 4 " LI'ty %; �.fir+' Qi.--Scow ON CAP N1,�,Y 2 3 2J25 5 DErgar. ELBOW OR �'ASCN COUNTY ENV!R^N!r!E"JTA L U r i rT+tRALSWEEFING 9U C NOTE, ATSOxT '„aORTB--i'''H�L `�y ifi'- O PVC PIPE FROM BOTTOM aF TRENCE TO FINISHED GRADE. REMOVABLE I}= r D$TAZL CAP SHALL BE INSTALLED �� ON OBSERVATION PORT PIPE. CLEAN OUTz T" A-r £ortsM of vSs asoki PoeT- • NOTECLEANOUT TO BE FROM 0 TO 6 TOTAL: OF If ;N SVS2TEM- INCE GRADE. ` 1i3S7Rii. #t•T`tocrTOrt O C-33 SA14Z INCHES BELOW H- REBBED OUT **LATERALS ARE TO BE MITERED MARK ENDS WITH- RESAR- CLEAN REQUIRED AT END OF EACH LATERAL- _N °rRENCEES- -j9i-- 9 Length Length Orifice # Distance from Distance from Lateral# (In.) (Ft.) Spacing Orifices Feeder Line (In.) Cleanout8 (In.) 1 540 45 28 19 18 2 540 45 28 19 18 18 3 540 45 28 19 18 18 4 540 45 28 19 18 18 Total Lateral Length 180 Total# Orifices 76 GPM = 48.64 (with 5/32 orifices) Dynamic Head Calculations Selected residual pressure: 5 ft. Length (Ft.) #Orifices Transport Pipe 30 76 0.98 ft. Feeder Total Lateral Line Length Lateral#1 45 4 49 19 0.88 ft. Lateral#2 45 2 47 19 0.85 ft. Lateral#3 45 2 47 19 0.85 ft. Lateral#4 45 4 49 19 0.88 ft. Total Elevation Lift �n 8.00 ft. Total Dynamic Head ,L4j��`pt,, 40 17.44 ft. Wif... .'flitq r'''6\ ;r!%. 51.00349 •;0 r1 ''a PAUL4 JOY JOHNSON •"kr LICMIg. ppiGiva. 3 APPROVED MAY 2 3 2025 MASON COUNTY ENVIRONMENTAL HEALTH DJA . . FL5 0 sERIES TECHNICAL SPECIFICATIONS EXTERNAL CONSTRUCTION: FL50-Series Pump Volute and legs-Gray iron casting class 25 PERFORMANCE Nests CURVE 60 Hz. class 25.All 0 R Motor Cover-Gray iron casting Liters Per Minute 189 26 castings shall be powder coated for corrosion 0 38 114� 5 341 2i.3 resistance prior to a� mbty. , 70 i I i • i l i Fasteners-all fasteners shall be 300-series : i I { . ` i 1 , I : 18.3 • t stainless steel. 60' --- ' _ MOTOR 50.` ® . 15.2 a Submersible 3450 RPM,oil filled and hermetically I FL50 I I i2 17-4 PH stainless = i i ; .2 7. sealed.Class B insulation rating. Fa steel rotor shaft Thermally protected on single = 40o i . I 1 I : -'��� s.i - phase models.Three phase models shall have = i ` overloads incorporated into the control panel, 0 30 �■ . i c 1 properly sized for the horsepower and i ' ' • amperage of pump. 20 I �41 ' ; 6.1 �� IUMII IMPELLER ! ' I ' i 3.0 design capable 10! j I . f l i '• Cast iron-class 25,semi-openI � ! I i I I i . of passing a minimum 3/4"solids. s 0 ; ; 10 20 30 40 50 60 70 1 80 90 100 0 SHAFT SEAL U.S.Galons Per Minute Carbon/ceramic unitized design with BUNA N elastomers and stainless steel housing. FL50-Series POWER CORD Model HP warts Ph.Mnps Cord sw,rrh Plug-End Wgt 10'cord length—Standard.Quick-disconnect FL51 A 1/2 115 1 12 10' Automatic Series Plug 62 FL51 A-2 1/2 115 1 12 25' Automatic Series Plug 54 design allows for easy field replacement. FLS1 A-3 1/2 115 1 12 35' Automatic Series Plug 66 Optional lengths available per chart. FLSi M 1/2 115 1 12 10' Manual Plug 51 FL51 M-2 1/2 115 1 12 25' Manual Plug 62 LEVEL CONTROL FL51 M-3 1/2 115 1 12 35' Manual Plug 63 Automatic models shall be controlled by an FL51 M-5 1/2 115 1 12 50' Manual Bare Lead 65 adjustable wide-angle style switch sealed in FL52A 1/2 208-230 1 6.5 10' Automatic Series Plug 62 a polymeric float.A series piggy-back style FL52A-2 1/2 208-230 1 6.5 25' Automatic Series Plug 64 plug shall be provided to allow for manual FL52A-3 1/2 208-230 1 6.5 35' Automatic Series Plug 66 FL52M 1/2 208-230 1 6.5 10' Manual Plug 61 bypass operation.Not available on 50'models FLS2M-2 1/2 208-230 1 6.5 25' Manual Plug 62 and 3-Pha� FLS2M-3 1/2 208-230 1 6.5 35' Manual Plug 63 FLS2M-5 1/2 208-230 1 6.5 50' Manual Bare Lead 65 DISCHARGE 2°FNPT with a 1-1/2"FNPT threaded cast iron flange provided. APPROVE D DIMENSIONAL DATA: Height:16.4" Width: 11.2" MAY 2 3 2025 (manual models) Maximum Fluid Temperature: MASON COUNTY ENVIRONMENTAL HEALTH 100°F,40°C Continuous Duty DJA 140°F,60°C lntermittent • EiScuetrilkj acUS Spec 1lcatons are sableCt to change witout notice. Liberty Pumps• 7000 Apple Tree Avenue•Bergen,New York 14416•Phone 800-543-2550 Fax(585)494-1839 www.1/berltypumps.00l71 copyright©Liberty Pumps,Inc.22;17 All rights reserved. LLIT 6762 R031t 7 • 3 c j � bps c o �. F • ' - T .....2i F yrds µl�oz v f f lI i aoI'M 1SSS l 1 k i • S € 1/ t i `r 2 .. i ! C9LF-4.$k-\-6 ''''kdt4.\.,.. 1 i < MAY 2 3 2025 • MASON COUNTY ENVIRONMENTAL HEALT iF DJA z _ N....1--- *ILL-if 6 i i _' -3 T9 =i i -__ '-e-_ j NA if _ . 'm=- --- il.iifa f 1 '*-"'==''''" • j . �=(- — .-__ . .. � L 7 - i _ =r pw.a.e-3 i g F ''-' 1nr- Septic erti►5.-":i3:.:-- _ za ie5.'ywti� ae :- _,....y..=.:r7s 2—2 2C — -- — 2 It a 3 _ ivw.. • ' Y'-us. ,..• Dept acif s'�'r ice: r.: �.. �..seviBE�aa.�.�. '• t f (6 c f-9 Cvvtoc t Septic i)esi vs, 9nce INSTALLATION & MAINTENANCE 1 • fit` � ;� �h • Pressure Distribution Systems—Sand Lined Bed ,4`.•. .� •'`. PAULA JOY3JOHNSON \ 51. 1. Install Laterals with contour of the ground. C�t�tSl_ti Sidtvril"' 2. Install bed bottom level. EXPIFRE3 3. Ensure sand is clean and meets C-33 standards. S 4. Install locator tape or rebar at each end of all drainfield laterals. 5. Install observation ports as indicated on the plot plan. One required in each corner of the bed. Two with bottom extending to the bottom of the drainrock and two extending to the sand/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. 6. Install drainfield during dry weather and soil conditions; any soil smearing must be eliminated by hand raking. 7. 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). 8. Install audio/visual high water level alarm. 9. 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. 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 orn• t- .1 70 23. Homeowner is responsible for all property lines and easements. b�`"�d�`d�"d�t i MAY 2 3 2025 afr MASON COUNTY ENVIRONMENTAL HEALTH DJA