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HomeMy WebLinkAboutSWG2023-00219 - SWG Application / Design - 6/20/2023 M : 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: SWG2023-00219 APPLICANT RAILROAD AVENUE LLC Phone: Address: 301 E WALLACE-KNEELAND BLVD SHELTON, WA 98584 SEPTIC DESIGNER PAULA JOHNSON Arrow Septic Phone: 360-898-2255 Designs Inc. Address: 171 E VUECREST DRIVE UNION, WA 98592 Site Address: 151 e stairs way Primary Parcel Number: 322325210001 Permit Description: New SFR-3BR Nuwater Permit Submitted Date: 06/02/2023 Permit Issued Date: 07/11/2023 Issued By: Jeff Wilmoth Current Permit Fees Paid: $525.00 (additional fees may be required upon installation of system). Permit Expiration Date: 06/12/2026 (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 vL DATE RECEIVED: MASON COUNTY - cn N COMMUNITY SERVICES AMOUNT R CEI 85` RECEIVED W m o N Public Health(Community Health/Environmental Health) . N N. .�.��nWASeS84 SWG 017-2 — 0 a 11 `� 47s N 61h Street•Shelton WA 9BSBf Q Z w ON-SITE SEWAGE SYSTEM APPLICATION D D 3 m n APPLICANT PHC\E. R1 Railroad Avenue, LLC I Bob (360)280-2205 a Z MAILING ADDRESS-STREET.CITY,STATE,ZIP CODE ) 3 301 E Wallace-Kneeland Blvd, Ste 224 Shelton WA 98584 w c SITE ADDRESS-STREET,CITY,ZIP CODE 151E Stairs Way Union WA 98592 o I co 93 NAME OF DESIGNER PHONE C I N Arrow Septic Designs (360)898-2255 0 NAME OF INSTALLER PHONE 0 I N.) Joe Fassio Excavating (360)898-7286 < PERMIT TYPE(select one) CC DRINKING WATER SOURCE IC) liC RESIDENTIAL OSS 11'COMMUNITY OSS ECOMMERCIAL OSS E. PRIVATE INDIVIDUAL WELL 6 PRIVATE TWO-PARTY WELL Z I N TYPE OF WORK(se ect one) 7 PUBLIC WATER SYSTEM , NEW CONSTRUCTION/UPGRADES 15 REPAIR!REPLACEMENT OTHER DETAILS(select on That apply) 0 TABLE IX REPAIR Ial SUBMI�M ITTALS ha SEPTIC C�� 0 SURFACING SEWAGE 0 EXISTING FAILURE 0 SHORELINE EDESIGN FORM(REQUIRED) SEPTIC DESIGN(REQUIRED) BEDROOMS 1 LOT SIZE I N 6WAIVER(S)(IF APPLICABLE) 3 BR I .43 acres 5 DIRECTIONS TO SITE AND SITE CONDITIONS.(ex locked gate) Take the 3rd exit from roundabout onto Northcliff Rd. Turn right onto E Brockdale Rd. o I o Continue on E McReavy Rd. Turn left onto E 5th St. Continue going straight at end of 5th St o I o (W Takereasy St) onto dirt road at shared mailbox. Turn (L) on W Takereasy St. Property -+ on (L)with red sign: "151 E Stairs Way." I o 6.) SITE MUST BE FLAGGED FROM MAIN ROAD AND TEST HOLES MUST BE FLAGGED WITH TEST HOLE NUMBERS. OFFICIAL USE ONLY BELOW THIS LINE UPGRADE/FAILURE SOURCE(for reporting purposes) ❑VOLUNTARY 0 MAINTENANCE/PUMPING 0 BUILDING PERMIT 0 HOME SALE 0 COMPLAINT 0 OTHER: INSPECTOR SOIL LOGS COMMENTS:CONDITIONS ;j! /1 & t„./ 3 rL . c�`� 3D 5L....- 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. (..li CTOR SIGNATURE DATE APPLICATION EXPIRATION DATE _ � !CATION APPROVED/ISSUEDUE 1BY _ DATE WAllet 12-2-3 (Q - 2(Q W J\�, 7 �r T IS R MAY BE SCANNED AND AVAILABLE FOR PUBLIC VIEW ON THE MASON COUNTY WEBSITE REVISED 12/7/2 115 DESIGN FORM—PAGE ONE Assessor's Parcel Number: 3 2 2 3 2 — 5 2 — 1 0 0 0 1 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. ;ilaximum paper size: 11 X 1 Permit Number: 5W G 2023-00219 Designer's Name: Arrow Septic Designs, Inc Railroad Avenue,LLC Designer's Phone Number: (360)898-2255 Applicant's Name: 171 E Vuecrest Dr 4 Mailing Address: 301 E Wallace-Kneeland Blvd,224 Designer's Address: Shelton, WA 98584 Union, WA 98592 City State Zip T c City State Zip Treatment Device ❑Glendon Biofilter ❑Sand Filter 0 Mound ❑Sand Lined Drainfield 0 Recirculating Filter.Type: Gal Pre-Trash Tank 500 Aerobic UnitMake/ModelNuWater BNR-500 ❑ Disinfection unit Make/Model Other: Drainfield Type 0 Gravity Eli Pressure QfTrench 0 Bed 0 Sub Surface Drip Septic TanklDrainfield Specifications Laterals Number of Bedrooms 3 Schedule/Class 40 Daily Flow:Operating Capacity 270 gpd Length 40 ft Daily Flow: Design Flow 360 . `pd . Diameter 1.25 in Septic Tank Capacity(working) NuWater BNR-500 gal Number 5 Receiving Soil Type(1-6) 4 Separation 9 ft Receiving Soil Appl. Rate 0.6 ipd1ft2 Orifices Required Primary Area 600 ft2 Total Number of Orifices 40 Designed Primary Area 600 ft` Diameter 3/16 in Designed Reserve Area 600 ft2 Spacing 60 in 1 TrenchBed Width 3 ft Manifold Trench/Bed Length 200 ft Schedule/Class 40 Elevation Measurements Length header ft Original Drainfield Area Slope 2 % Diameter 1.25 in New Slope.If Altered 2 % Preferred manifold configuration used? 2rYes 0 No Depth of Excavation Up-slope 12 in Transport Pipe from Original Grade Down-slope 11 in Schedule/Class 40 Designed Vertical Separation 12+ in Length 90 ft Gravelless Chambers Required? 0 Yes 0 No RI Optional Diameter 2 in Pump Required? le Yes 0 No Dosing and Pump Chamber Pump/Siphon Specifications Number of doses/day 4 Diff.in Elevation Between Pump ez Uppermost Orifice 15 ft Dose quantity 90 -ai Drainfield Squirt Height/Selected Residual(head) 2 ft Chamber Capacity(flood) 1,000 gal Uppermost Orifice fft1Higher 0 Lower than Pump S off P P 8ump controls: Please check those required. Capacity @ Total Pressure Head 23.60 , C�Elapse Meter 6e'Event Counter Calculated Total Pressure Head 18.99 e • P p ', 2 min ,Pump off 6 hr JUL 0 5 2023 Comments ,i_,• ,/!ASON COUNTY ENVIRONMENTAL HEALTH J R w . DESIGN FORM—PAGE TWO Assessor's Parcel Number: 3 2 2 3 2 — 5 2 -- 1 0 0 0 1' Permit Number: SWG 2023-00219 DESIGN CHECKLISTS Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch 66 Test hole locations PS Drainfield orientation and layout Reference depth from original grade: g Soil logs Et Trench/bed dimensions and g Septic tank Iii Property lines critical distances within layout PI Drainfield cover g D-Box/Valve box locations ❑ Existing and proposed wells Reference depth from original grade within 100 ft of property g Septic tank/pump chamber and restrictive strata: ❑ Measurements to cuts.banks.and locations Cif Laterals, trench/bed,top and surface water and critical areas Ed Observation port location bottom ❑ Location and orientation of lif Clean-out location 0 Curtain drain collector curtain drain and all absorption g Manifold placement 0 Sand augmentation components g Orifice placement Other cross-section detail: g Location and dimension of Lateral placement with distance g Observation ports/clean-outs primary system and reserve area to edge of bedb Other Information gi Buildingsf ''1 g Audible:vis� •E� ferenced Yes No EZI Direction of slope indicator Scale of d •�4s'. liI #�• scale d ❑ Design staked out g Waterlines bar ,, `r• f`� 0 l�Recorded Notices attached g Roads, easements.driveways, of w'46• -40 0 lif Waiver(s)attached parking tUl.,4 •41 ••:— g 0 Pump curve attached g North arrow and scale drawing .' •f:'— ❑ g Evaluation of failure s"0y43 shown on scale bar •::o`• PAULA JOY JOHNSON'. Non-residential justification `_ i Slr 'Ot=5ipNl±.. t 0 g Waste strength Res ,si L ,' ❑ d Flow DESIGN APPROVAL The undersigned designer must •rifled by insta Ier at time of installation g Yes 0 No LA.------.0 97\ i — &- --CS Signature of Designer 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 n-s to regulations: 7 tvi r•',fi•'ntal Health Specialist Date CAUTION: DESIGN APPROVAL IS VALID ONLY UNDER THE FOLLOWING CONDITION: ✓ The design is stamped"Approved" by Mason County Public Health. ✓ The Onsite Sewage Permit has not expired,the Permit Expiration Date is: 6 - (Z 2 Ca ✓ 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. 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Z : O -2`t[�S z'z. 3 0 - 30 SL' �o tom -. * 0 1 0 (ki) ° M. ® N N / S� c ° Kev: ` 0 Audio-Visual Alarm 0i S 05 I O2 Cleanout ( 3 S12- d , 33 500 Gallon Pre-Trash tank 60 , v_ 20 O4 NuWater BNR-500 ATU Tank O1,000 Gallon Pump Chamber 0 Valve Control Box in LA,_,5,m.i l i • , n it. .. . 0 0.,i ,,f,..,,, .. ... - .6.. e, 3-F- c s Itr)Q4 r '`:'0 '� 5:��0349 7Q. PAULA JOY JOHNSON .:i .1 L1C4iSt_r.;6ESIGN�fi" e SLa.<< - l' = 30 • 1 , IC, 4 Po ft 0 v Ei S e,k.;c_ P, n,_ t SON eon JUL 0 5 2023 0 (ZG„`LtireaSl t�venv..e Lac NT�NVIRpNMg-A,, ,t•c_e.t=3223Z-se- t oocl eh, HEAL rH St E. Sfa.Nrs 4.74`a. 01"..`oh C v1 u"r ` aAj 41.cu to - -It- , 9• ,� (eve, ` _ l VatVe tp�i+rcL 40• �� box w;th 115 .7„.,.. Ott vaive5. . o '�ctQiG4i • 1.261 LA-ft a1 4` .-' Qtan 0 miumagumgml.1111110111111111111111"1111111.1111111 \ 0174-t`on t.2 6 `1 T‘31,icgti Of; (-b0Ht� S ac;n9 30 ,tv+ufr o laill J ,o a ..'��r� t1 — — — Ir--,cC.,,,-. • 05, /fi 4 At' _ ..L1..*.., I.b `},\.1, T�iOd �� P. i4:?.PAULA 1.° 39 .. L1MJ5i b�SiGNE�t• EXPRES 1 s� ` Detailed Drainfield Layout cf, to le . �: • Q"adi` l y 2-in- 1 Z �TMT. � lo* ' � �� yak' 4 P p • R ON f D - Ji.. -,e- • t Co JUL 0 5 20231 '�!� �s oa Dow '�1ASON COUNTY ENVIRONMENTAL HEALTH s.atrca _.End or,...;:h Jgw A...;w.. ° '°i " aunt Dro'infield • Cross-Section View - Not To Scots s aam+ow+ to 6x from 0 a 6 bows tow Fr frees. Morse yds dR �°or` Cloys+ out Raatird at Or Er l a( Eed►.Lagrat tVesc o Fors ` 'To e. s' avC � from 8eetes+ of Ts+anbe e++ Arrow Septic Designs � ` 3'•-'6 4 0 � C3�0) 898-2255 o5 Total � in System . Length Length Orifice # Distance from Distance from Lateral# (In.) (Ft.) Spacing Orifices Feeder Line (In.) Clean3ut(In.) 1 480 40 60 8 30 8 30 30 40 60 2 480 3 _ 480 40 60 8 30 30 30 4 480 40 60 8 30 5 480 40 60 8 30 30 'Total Lateral Length 200 40 ` GPM = 23.6 (Total#Orifices Dynamic Head Calculations 2 ft. Selected residual pressure: Length (Ft.) #Orifices Transport Pipe 90 40 0.90 ft. Feeder Total Lateral Line Length Lateral#1 40 2 42 8 0.15 ft. Lateral#2 40 11 51 8 0.19 ft. Lateral#3 40 20 60 8 0.22 ft. Lateral#4 40 29 69 8 0.25 ft. Lateral#5 40 38 78 8 0.28 ft. Total Elevation Lift81.1ap 15.00 ft. Total Dynamic Head O 18.99 ft. ;217 5 O 349 .�•v NO' PAULA JOY JOHNSON Lccr lsclntt iai AAPPRCVE0 JUL 0 5 2023ENTAL 4IAoON COUNTY ENVIRpN� JB W HEALTH .1 s flc_ ko v.0 S- _ 137 13�' , 1Y 151, 1 =. Flow-Mate -�_` Dose- ate or e�ui aatek In high head dewatering or effluent 1 This is our fastest growing Line of effluent applications where pumping i pumps.The 150 series is truly a workhorse performance is critical, this robust (, 3 designed for reliability under extreme conditions in an effluent environment.150 family of pumps is known for reliability, durability and performance. These series pump curves cover a wide range pumps are especially suited for harsh 1 of applications. They are well suited to environments.Zoeller's cool run design applications with low pressure pipe (LPP) and corrosion-resistant,powder coated and enhanced flow STEP systems.Zoeller's epoxy finish add up to a long-lasting, I cool run design and corrosion-resistant, powder coated epoxy finish,in addition to trouble-free product i the hermetically sealed,oil-filled motor and 2 i non-clogging vortex impeller add up to a a Z r e W long-lasting,trouble free product , � '—I LL � © MADE I UiA MADE IN I �? �1�•YJG•.. � • .,WCC.Dr4l�eGm LL W 1 - „APPLICATIONS: I APPLICATIONS: 2 • STEP or onsite applications i • STEP or onsite applications • Water transfer g • Light commercial dewatering • Light commercial dewatering 1 SPECIFICATIONS: SPECIFICATIONS: g • 1-1/2"NPT discharge • 1-1/2"NPT discharge 1 • 3/10 HP through 1/2 HP • 1/2 HP through 1 HP i • Available in nonautomatic or with a variable level - Available in automatic or nonautomatic piggyback mechanical switch • Model 137,139,140:1/2"(12 mm)spherical solids I • 1/2"(12 mm)sphericalsolids capacity with vortex capacity with vortex impeller i thermoplastic impeller) � • Model 145:3/4"(19 mm)spherical solids capacity with `r For more information,see chrVfc'alAletcj2r1vortex impeller ;• Bronze construction available(139 series) > / //�f • High head version available(145 series) 1 JUL 0 • Double shaft seal versions available for added protection -`'r)W(In, ,) 20?3 ED on models 140/145. F tiurV FNI// For more information,see Technical Data Sheets FM2782,FM2783. i .• ��tii(7 d i PUMP PERFO CURVE1,HEAL r E ii POMP PERFCRMANCE0uRVE I MODEL 1' /15.153 d MODEL 137/1401.5 °a 50 a- n ,■■■■■■■■ S 14— 45 153 ,■■■■■■■■■ ' ■,■■■■■■■■ 12-j ao ,a- ■.■■■■■■■■ 2 35 152 ,.- o ,,'■■■■■■■ a i 8— 30 "1i,__ c ■.,,I■■■■■ 4' 25 '- a ■■.`■■■■■ 5 8— 20 . �■■■.,.■■■■ 4� 15 ■�i��i\\■■■ l0 ■■■e \!las■■ " 2� ■■■■■11►\■■ 5 ■■■■■I1■IN O■ 1 0 f , ■■■■■�■■II® 10 20 30 40 50 60 70 80 80 100 x GALLONS ,o m n n z a +c a s• ,a uuns s LITERS 0 40 80 120 160 200 240 280 320 380 `1 O10 c '..a ° _'Fa.�n A., :52656 FLOW PER MINUTE 014538 8 0 Alt rights reserved. ZOELLER PUMP CO. 1502-778-2731 1800-928-7867 I zoellerpumps.com k;t- , (p CA--\0 • LSV'J-3ae r SIN 3WJS• 699L-L99 (09£) :XV3 999L-Z99 (09£i :3NOHd . -N•�•Q VQ986 bM'ONf2O2 9 31.i1VS L6OE.X0$ O d r : ut �se.11 009 :�,g 03Lwaa 'ON! JNi.2J33l iV 3 0 0. � r•N Q 1 .: ..1 , c,,,S ' -7- k y� \? 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Iiirreg i ",'a*SYiy��-?i' k3,- 1 0 I,- ( 0 —trzattvAk lxvihy : .s1kNasgh! 1 • . r 9'2' DUAL PORT AERATOR i wATERncicr �� LID VENT(typ) RISERS(TYP) l _ • 7 Is 1 1 as-MAX1 1"PVC'TY?' s 1/2•PVC TIC r�7MRLE[3 4' ` } - 2'COUPLING • � &REDUCER i 6' LTh t , ) (L i L - - `�-�_ i 2'TEE 1"PVC SLUDGE 12` RETURN LINE - 2'PVCJ TRASH CHAIIIlB GA DIGESTER CHAMBER CLARIFIER OPERATING CAPACITY:417 GALLONS OP=RATING CAPACITY:421 GALLONS CHAMBER ' FLOOD CAPACITY:494 GALLONS FLOOD CAPAC TY:494 GALLONS 'WO GALLONS FLOOD:191 GAI. ,' sa• I S3' 0 <_......,) 98• a c e e e 1'X 1/2" I e TEE ! i e , p \ :•• • 12' O• -DIFFUSER BARS(2) PARALEL TO TANK WALL 4. `I — M SLUDGE RETURN // 15 TAPER E low 1 }'Gft. STONE-FREE NATIVE SOIL OR COMPACTED SAND i INSTALLATION INSTRUCTIONS OVER STONY SOIL 1)Excavate tank hole with vertical walls to 1 foot larger than tank on all sides. 2)If bottom of hole is stony,instal 3"of compact sand&level 4' 7-2• 4' out with screed. __ __ _ _ 3)Install tank in center of hole,keeping 1 ft.void space on 7 _- all sides. I 24'RISERS(7YP) 24'BLOWER 4)As tank is filling with water,fill in void space with compact ! I INC CAST, granular(sandy)soil free of large clumps cf day. I I N TOP OFLI 5)Install rest of system,&affix risers to adapters with , , waterproof adhesive. I • $/(1) 4'$' 6) EZLflR I H ® V I SER l.e 0 1; soils over top of tank. I _ • .ER I I DIGESTER I Isdeeai 8)Final grade the surface to avoid on surfs L 0 5 2023 I I water toward tank. I L ——_I MASON COUNTY ENVIRONMENTAL HEALTH TOP ViEtre JBW . =ZB n AEROBIC TREATMENT TANK DETAIL FOR e= ` NuWA TER BNR-500 TREATMENT UNIT 'Wahl ,ir ENVIRO-FLO, INC. REVISED: a 111111:arWastewater Treatment Technologies 3/01/12 t '•""�^.•Ta.� t'` P.O.BOX 321161,Flowood,MS 39232 (877)836-8476 (601)845-4716 fax SCALE: www.enviro-fto.net 1 n = 1'4 . - Troatrr,a^t Systems 8y Erwira-Ftp.lnc I1m �41 Imo. ,. i '� I I . r:I i42:,_/11 „. 11i i\ _.... -A. ter ! ..._ � i1 �_ �s 1� ` `� 1 i rf. tle. 444.44. Jr> : . It It + ,rr E>> • ' '- a fi /� ,� Oft \ 0 ~ 12p- +a 1 1115.if ;7 T iL III i l 4 Of rik r Or."-° 1000,0 •�� Ia ri e -0 i li4 401. 1-1 PARTS UST NuWater NR Assembly Diagram I A.DUAL PORT AERATOR M.POLY DIFFUSER BAR(2;: H 4-4 B.3/8'RUBBER 90"WI CLAMPS(2) N.1"PVC(2 1;2 SEC i ION) • C.318"'BARBED ADAPTOR X 1(2"NPT(2; O.1"SUP CAP co D.112"SLIP X 1f"NPT ADAPTOR P.i/8"CLEAR PVC HOSE(OPTIONAL S; O E-1"STREET X 112"NPT BUSHING(3) Q.1/2'PVC PIPE(BY INSTALLER) 111 F.112 40'ELBOW(3) R.1"PVC PIPE(BY INSTALLER) G.1"X 1'X 1/2 TEE S.2"PVC PIPE(BY INSTALLER' H.1^90°ELBOW(3) T.1/8 BARBED ADAPTOR TO !. l O 6.2'X 1'BUSHING U.1/2'STREET X'U.'"NPT B ��, V E 1� J.2"SANITARY TEE V 1/2 PVC COUPLER,(2', /M. I iLi K 1'PVC CROSS W 2-COUPLER(BY INSTA A -,' JUL 0 5 2023 L.1"COUPLER(BY INSTALLER) ?;iASON COUNTY ENVIRONMENTAL HEgLTH ,"P l Revised 2/25/12 ,; � 9 0 (• 0 Atea tut Septic De/sign/3De/sign/3S.4. • WA.h •l"r, • Z�}i NuWater BIN Pretreatment L\STALLATION & MALNTENANCE • 5�00 34 9 {�J Pressure Distribution Systems PAULA JOY JOHNSCN . Z L1C�iS� DESiG 4 ^cc�EX IRS 6-0l si ` 1. Install Laterals with contour of the ground. 2. Install trench bottoms level. 3. Install locator tape or rebar at each end of all drainfield laterals. 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. Redundant off switch not required. 8. Install check valve in pump outlet line to prevent system from draining back into the pump chamber. 9. 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. 10. 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. 11. Encase all water lines within 10' of drainfield and under any driveway/parking areas. 12. Divert all storm water runoff away from on-site sewage system. 13.No curtain drains allowed within 10' of the up-slope edge or 30' of the down-slope edge of the drainfield and reserve area. 14. No vehicular traffic over drainfield area. 15. Inspect floats, clean filters, and test high water level alarm every 6-12 months as needed. 16. All materials and workmanship must meet County and State regulations. 17. Deviation from this design without prior approval from the Designer and Mason County Environmental Health Department will make this design null and void. 18. All manhole lids and access, sampling or inspection ports must have locking covers and be located at ground level. 19. All pressure systems with a pump chamber outlet higher than the drainfield must have a 1/8"hole drilled in the discharge pipe above the pump to prevent siphoning. 4 20. All transport lines under driveways or parking areas must be encased to prevent crushing. 21. Homeowner is responsible for all property lines. 22. Please Note: When you begin using your septic system, contact your septic installer to discuss setting up a schedule for your required Operation&Atep:1p o�your NuWater pretreatment system. O V ED 05 2023 WASON COUNT Y ENVIROh� �.t ( Q 0 MtNTAL HEALTH