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HomeMy WebLinkAboutSWG2023-00398 - SWG Application / Design - 9/19/2023 MASON COUNTY 415 N 6TH STREET,SHELTON,WA 98584 SHELTON:360427-9670,EXT 400 BELFAIR:360-275-4467, EXT 400 • P Public Health & Human Services ELMA:360-482-5269,EXT 400 FAX:360-427-7787 On-Site Sewage System Permit: SWG2023-00398 APPLICANT ADKINS-SLACK LIVING TRUST Phone: Address: WILLIAM I ADKINS & PAMELA J SLACK-ADKINS SUGARLOAF, CA 92386 OWNER ADKINS-SLACK LIVING TRUST Phone: Address: WILLIAM I ADKINS & PAMELA J SLACK-ADKINS SUGARLOAF, CA 92386 PAULA JOHNSON -Arrow Septic SEPTIC DESIGNER Designs Inc. Phone: 360-898-2255 Address: 171 E VUECREST DRIVE UNION, WA 98592 SEPTIC INSTALLER Bamford Septic Repair, LLC Phone: 360-790-2364 Address: 301 E WALLACE KNEELAND BLVD SHELTON, WA 98584 Site Address: 641 E Jack Pine Ln Primary Parcel Number: 321045400049 Permit Description: 3-bedroom pressure septic system non-conforming repair Permit Submitted Date: 09/19/2023 Permit Issued Date: 09/26/2023 Issued By: David Anderson Current Permit Fees Paid: $780.00 (additional fees may be required upon installation of system). Permit Expiration Date: 09/26/2024 (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 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. i ' :. - GIIX ^' 2 0 202 OFFICIAL USE ONLY MASON C I►' UN U �IEHECt!VEU CI �� C > •!i- COMM V 1V I 1 AMO REC.ENED: — RECEN Bt. W (n (Y,1]/•1 — m cn Public Health(Community Health/Environmental Health) < (4 415 N. h Str t-ShelfCO n.WA 91 S:i:.i'Yr.4(Iti S W G of 0 Z1? - ( D °1 S g o 415 N.6N Street�Shelton.WA 9856a o Z (A ON-SITE SEWAGE SYSTEM APPLICATION D m n APPLICANT '-C`•c m Pam & William Adkins (909) 744-7316 D Z MAILING ADDRESS-STREET.CITY.STATE.ZIP CODE g PO Box 1180 Sugarloaf, CA 92386 & 03 XI SITE.ADDRESS-STREET.CITY,ZIP CODE 0 '• 641 E Jack Pine Ln Union, WA 98592 ° ' co NAME OF DESIGNER PHONE Arrow Septic Designs, Inc (360) 898-2255 -< Ni NAME OF INSTALLER A_LER PHONE —1 v Bamford Septic Repair (360) 790-2364 < PERMIT TYPE(select onei DRINKING WATER SOURCE — I CD rr RESIDENTIAL OSS COMMUNITY OSS @J.COMMERCIAL OSS 11 PRIVATE INDIVIDUAL WELL E PRIVATE TWO-PARTY WELL Z TYPE OF WORK(select cnei ,,'PUBLIC WATER SYSTEM 1 ENEW CONSTRUCTION/UPGRADES (REPAIR i REPLACEMENT OTHER DETAILS selsct RI that apply) 0 TABLE IX REPAIR Ul SUBMITTALS 0 SURFACING SEWAGE 0 EXISTING FAILURE 0 SHORELINE DESIGN FORM(REQUIRED) SEPTIC DESIGN(REQUIRED) BEDROOMS LOT SIZE co 11WAIVER(S)(IF APPLICABLE) 3 0.37 acres 0 O DIRECTIONS TO SITE AND SITE CONDITIONS.(ex.locked gem) Take Brockdale/McReavy Rd to Union, turn (R) onto E Manzanita Dr to go into the C Alderbrook community, turn (R) onto E Jack Pine Ln, follow all the way to the end past the r o water tower and past small stop-sign-shaped sign that says "Private 641" - keep driving straight, test holes are down below deck at house. I cr) SITE MUST BE FLAGGED FROM MAIN ROAD AND TEST HOLES MUST BE FLAGGED WITH TEST HOLE NUMBERS. OFFICIAL USE ONLY BELON(THIS LINE— ----- --____ -- UPGRADE/FAILURE SOURCE(for mooning purposes) Fit 0 VOLUNTARY 0 MAINTENANCE/PUMPING 0 BUILDING PERMIT ❑HOME SALE ❑COMPLAINT ❑OTHER. INSPECTOR SOIL LOGS COMMENTS/CONDITIONS Wis. 0—Z;" Vel 1.c -NI-, Q 7j V61,5 11 G SEP 12113 U BY--- ---_» 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. !NSP CTOR SIGNATURE DATE APPLICTI' ON EXPIRATION DATE APPLIC PPROVED/ISS,E'ED BY DATE 7/l6( 1/Z6 (to if / /za3' THIS FORM MAY BE SCANNED AND AVAILABLE FOR PUBLIC VIEW ON THE MASON COUNTY WEBSITE REVISED 12/7/2015 DESIGN FORM—PAGE ONE Assessor's Parcel Number: 3 2 1 0 4 — 5 4 — 0 0 0 4 9 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 V 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"_V 1 ' PARCEL:IDENTIFICATION . Permit Number: SWG Designer's Name: Arrow Septic Designs, Inc Applicant's Name: Pam William Adkins Designer's Phone Number: (360)898-2255 Mailing Address: PO Box 1180 Designer's Address: 171 E Vuecrest Dr Sugarloaf, CA 92386 Union, WA 98592 City State Zip City State Zip ' • ... DESIGN PARAMETERS:,;..'. Treatment Device ❑Glendon Biofilter ❑Sand Filter 0 Mound 0 Sand Lined Drainfield 0 Recirculating Filter.Type: ❑ Aerobic Unit Make:Vtodcl 0 Disinfection Unit Make/Model Other: Drainfield Type ❑GravityPressure [Trench 0 Bed 0 Sub Surface Drip Septic Tank/Drainfield Specifications Laterals Number of Bedrooms 3 .."'"//. Schedule/Class 40 Daily Flow: Operating Capacity 270 gpd/" Length 40 ft ...._-- Daily Flow: Design Flow 360 gpd Diameter 1.25 in V Septic Tank Capacity(working) 1,200 gal , Number 5 Receiving Soil Type(1-6) 4 / Separation 5 ft Receiving Soil Appl. Rate 0.6 gpcUft2/ Orifices Required Primary Area 600 ft2 7 Total Number of Orifices 40 Designed Primary Area 600 ft2 Diameter 3/16 in Designed Reserve Area — ft2 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 5 % Diameter 1.25 in New Slope. If Altered 5 a/o Preferred manifold configuration used? 4Yes 0 No Depth of Excavation Up-slope 11 in Transport Pipe from Original Grade Down-slope 9 in ''' Schedule/Class 40 Designed Vertical Separation 12 in - Length 20 ft Gravelless Chambers Required? 0 Yes ❑No 6'Optional Diameter 2 in Pump Required? 66Yes 0 No Dosing and Pump Chamber Pump/Siphon Specifications Number of doses/day 4 Diff,in Elevation Between Pump& Uppermost Orifice 5 ft Dose quantity 90 gal Drainfield Squirt Height/Selected Residual (head) 2 ft Chamber Capacity (flood) 1,000 gal Uppermost Orifice C'Higher 0 Lower than Pump Shutoff Pump controls: Please check those required. Capacity V Total Pressure Head 23.60 gpm 1 'Timer l "Elapse Meter g Event Counter/ of ,.'t,F� $�1 �4 T• ft If Timer: on 2 min ,Pum off 6 hr Calculated Total Presutr, c' 'J i Liy Pump P Comments SEP 2 6 2023 Y.AS aS CNN—,` RM/'cti* liCkLTti ,4 ` DJA "- - , DESIGN FORM—PAGE TWO Assessor's Parcel Number:3 2 1 0 4 — 5 4 -- 0 0 0 4 9 Permit Number: SWG DESIGN CHECKLISTS Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch lid Test hole locations g Drainfield orientation and layout Reference depth from original grade: Soil logs g Trench/bed dimensions and g Septic tank Property lines critical distances within layout (�( Drainfield cover ❑ Existing and proposed wells D-Box/Valve box locations Reference depth from original grade within 100 ft of property g Septic tank/pump chamber and restrictive strata: ❑ Measurements to cuts.banks.and locations [if Laterals,trench/bed,top and surface water and critical areas g Observation port location bottom ❑ Location and orientation of Gd Clean-out location 0 Curtain drain collector curtain drain and all absorption g Manifold placement 0 Sand augmentation components Ig Orifice placement Other cross-section detail: Location and dimension of It Lateral placement with distance g Observation ports/clean-outs primary system and reserve area to edge of bed g Other Information 66 Buildings Audible/visu �'�l rm referenced Yes No lid Direction of slope indicator l' 0 Designstaked out Scale of dr 1 �r 1.ow•n on scale ❑ Waterlines bar •, •, j?, 0 'Recorded Notices attached 10 Roads,easements.driveways,• 's' 01 ,4t � i 0 Waiver(s)attached parking �; • ; � [� 0Pump curve attached lt . .�,,1 Cd ❑ Evaluation of failure 6d North arrow and scale drawing ,^ . . shown on scale bar Non-residential justification ti y.�• PAULA JOY JOHNSON 510 349 0 [ifWaste strength LIC 1r S! ❑ Cif Flow EXPI�ce 1 DESIGN APPROVAL The undersigned designer must be 'fled by installer at time of installation g Yes 0 No Signature of Designer Date a, The undersigned has reviewed this design on behalf of Mason County Public HeA d liet it to be in compliance with state and local on-si ulations: 2�Z3 9/Z</�oz3 SEP26 Ens, ron ental Health Specialist MASWdNn 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: 2/26/ ?or Z(( ✓ 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. Updated Date: 12/7/2015 Arrow Septic Designs 171 E. Vuecrest Dr. Union, WA 98592 September 18,2023 Mason County Department of Health Services 415N6thSt Shelton,WA 98584 RE: Pam&William Adkins(Parcel#32104-54-00049)Evaluation of Failure Dear Inspector: Attached is a repair septic design for a property located at 641 E Jack Pine Ln,Union,WA 98592. There is an existing 3-bedroom home built in 1974 that ties into a gravity septic system of the same era. The existing system has a 1,000-gallon 2-compartment fiberglass septic tank followed by a 267 s.f. gravity loop drainfield. The owner recently serviced the system and got a deficient report,and it was discovered that the drainfield is not taking water properly. Because of its age,the old drainfield will be abandoned and because it is undersized, fiberglass and because of its age,the old tank is to be decommissioned or removed. We are proposing a new 1,200 gallon minimum 2-compartment septic tank with risers and lids to the surface and an effluent filter. The septic tank will be followed by a new 1,000-gallon pump chamber. The new drainfield consists of 600+s.f.of shallow pressure bed using an application rate of 0.6.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 non-compliant repair with 12"+vertical separation. There are no surface water or well setback issues. The property owner's contact information is as follows: Pam&William Adkins PO Box 1180 Sugarloaf,CA 92386 (909)744-7316 If you need further information,please contact my office at(360) 898-2255. Sincerely,p}k APPROVED • `' � SEP 2 g 2023 PAULA JOY JOHNSON " •d1ESiGNE'ft MASON COUNTY ENVIRONMENTAL HEALTH • Liceggtonsite Wastewater Treatment System Designer p JA 2616- °l .1..^' ( ( ..„,. ,,.. • f.,., 045,40k oNd te, .. , f , v., • ..r., , , -,,--..... 2,..P. Poi 1 . • t • cox Z1 \•401 1 S r.7 ae,. glilleeN 1 1 V.W21="*tttr.t; n5r.,5;55;54;t.L. 2JAVIALIAskt: giOE:Siiist”. ••.. .,.. , • : . •,. . •• • ' ' `--f-, .,,,,,, ci -, '4)- sd's L/ q c.? „....... c , ril 7:1 1-• ts.14AltAMIA:18.,.; ,i,,,. CZ -: ',.` ., , XV i I MATCH\TO SHEET ONE 1 • c i 0 &CC!<01t.. . . . . . 'S.:Al.:1:4.: • .. . .• mATCH MA f"."'__)„._" "3“,44______4' 1 C —SECTION 7.ME s — -:- • i , • a, i 44,0. t,...• • 0 • f" . , ... , z , , flEf.;!!!!;Er:15.0 . g!of PI' ''s ' 4/ t-L ?'! ' .. , ,, ; .,/, . ',7,,,...4 /..;' "... ...,... , : ‘ . . iir..z...i.:0.- .......,.. ..., :. 3::.1.4At.s.a...2AVA; 15 A , t .4 „lc 2.' • 0 '''''' <, CO '.; •:'/ CO ,e# ;PAC;; tSf.W.C. . 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E.xP��s �i�i�>T 0 Valve Control Box I OCR ' ,4 \ , �u\� `��� ' APPROVED ,I • 40r o • ' T 6......M.1111111011111.11111.111111.11111111.11111 aV_ r 4:0H A 1 iL7 if Detailed Drainfield Layout Tyyicd Observation Port SC46 1' • 10' find Geode L/ 0. 10' OO q' to t' Lam/ Fi Fabric Oripnd ®\ Seedy F; Grade !� ED 2'' SEP 2 6 2023 Q w 2-i• to Lac leotard 1 ` '� Ortiz' �i I MASON COUNTY ENVfROh'?dFNTAL N ora:+ • s- • i n�A EALT;' . * sum-of+ Cc 12" as Decree Mae • Lateral /give Layeri:f+d'a t>ita • Drainfield : Cross-Section View • • 0.s01 - aeon ad tied To Sete N CJ OlC .OROuf t, be from0 SO ti GOf incise OM )u, Freshet Grote. Mork ends Mira Redo• deco 0� Ne c 0 0b6Crva5off Fart �i��f�', • gagged at Me End of Each leotard To B. s' PVC fps from Bottom�,wof Trench �f Grade. F eo dtie Cop shall be p• VA• �. Septic' Designs . T1 o, Cb,. , Pei Pe ,mar �:f !r ti. J. Arrow p t i Cei Woolwedge of 5 T h 4-' �`' �' `�'l < ( 360) 898-2255 S10Q349 rA +3. PAULA JOY JOHNSON • '�coiCis� mEiGN�-� Length Length Orifice # Distance from Distance from Lateral# (In.) (Ft.) Spacing Orifices Feeder Line (In.) Cleanout(In.) 1 480 40 60 8 30 30 2 480 40 60 8 30 30 3 480 40 60 8 30 30 4 480 40 60 8 30 30 5 480 40 60 8 30 30 Total Lateral Length 200 Total#Orifices 40 I GPM = 23.6 Dynamic Head Calculations Selected residual pressure: 2 ft. Length (Ft.) #Orifices Transport Pipe 20 40 0.20 ft. Feeder Total Lateral Line Length Lateral#1 40 2 42 8 0.15 ft. Lateral#2 40 7 47 8 0.17 ft. Lateral#3 40 12 52 8 0.19 ft. Lateral #4 40 17 57 8 0.21 ft. Lateral#5 40 22 62 8 0.23 ft. Total Elevation Lift 5.00 ft. AP fidt 'l bynamic Head 8.15 THREADED WAN ,.. SECURED LID WITH GAS TIGHT SEAL READED N Zir DIAMETER ACCESS RISER P ? ; :;_.ySERVICE VALVE• FINISH GRADE -— - -- �, -- MASON COON. L .. _l i f; D!: �,- - i isc — — • — 1-7-- RA-TO DINFIELD FROM SEPTIC • .TANK - � t 1 if EMERGENCY STORAGE ANTI s1A40N VALVE• HIGH WATER ALARM LEVEL II -- .-- , CD WORKING VOLUME t _ I. FLOAT NORMAL7tOFF LEVEL _,�- 0 — FOR FLOAT "Alb SEDIMENT SHROUD• ,il CHECK VALVE . • rc o� %3��rs�T.(t(.i! SUBMERSIBLE� �.4 li.lj,,N;• 8EOIYENT8 f � PU _• `` �� • PUMP CHAMBER s*2• PAUTA JOY JOHNSON L� LICMSKti'agi ft'. '--'c-c - \� 1. 'AS NEEDED Septic Tanks must meet standards required by W�'istered sewage Z .. tanks and chapter 246- 72C FIGURE 2 P manufacturer must be on Dept of Health list of g ..... • .... .........L,._.:.�4111'7_All Paste 35 of 65 ow 137 139� 1/��� • Bronze construction available(139 series) 1 4 • 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 PUP aeRFow�nxcEcuRVE performance is critical, this robust �mlr _ it = 1371140/145 PERFORMANCE family of pumps is known for reliability, n '■■■■■■■■■ durabilitymrnd performance.s These " � ,■■■.:...= pumps are especially suited for harsh --N environments. Zoeller's coot run design m �,��� and corrosion resistant powder coated ■,.■■■11111� C 3 epoxy finish add up to a long-lasting, b ■■,,.■■.■ trouble free product. • u ,"■■■■■■. M ■■,,,■.■■.■ APPLICATIONS: u N -n • STEP or onsite applications 1 >: ■.■\IIIIIIIIIIIIIII m • Water transfer Y'° �MMI,��� R Z • Light commercial dewatering n ..■■"MAIM '•I SPECIFICATIONS: C �•fismansimm. • 1-1/2"NPT discharge ` , • ■.-.1,,`■■ • 1/2 HP through 1 HP MADE IN THE USA . ■■�■„■';� • Available in automatic or nonautomatic USIISAYAJORIIYUf IS.M 11 • Model 137,139,140:1/2"(12 mm)spherical solids 111111111111.111.111©® x m s a so a m c a KO with vortex impeller • Model 145:3/4"(19 mm)spherical solids capacity with "",° ° ISO No >m nC.•PER Wert[ 152656 vortex impeller -41111.111111111.- i151, 1, 2, 1 . : W st.. W PUMP PERFO:k1'NCE CURVE --� MOD 151 52/153 Dose-Mateo, etuiN)a\ so- This is our fastest growing tine of effluent Ili 14- 45 153 pumps.The 150 series is truly a workhorse designed for reliability under extreme 12- 4° conditions in an effluent environment. 1.50 series pump curves cover a wide range - = 1a- 35 152 of applications. They are well suited to , 30 applications with low pressure pipe(LPP) I 6- 25 151 and enhanced flow STEP systems.Zoeller's cool run design and corrosion-resistant, 0 6— 20 powder coated epoxy finish, in addition to the hermetically sealed, oil-filled motor 15 and non-clogging vortex impeller add up to 4- a long-lasting,trouble-free product. to 5 r1 z— �J APPLICATIONS: � � R • STEP or onsite applications MADE IN—�HE USA o I� q e 7Io go so too • Light commercial dewatering USIA6AWUOIUYIiiSt01Tll1 , �' . 0 r, LITERS 0 40 20 00 240 280 320 360 SPECIFICATIONS: �M FLOW PER MINUTE 014506 • 1-1/2"NPT discharge SEP 2 6 2023 • 3/10 HP through 1/2 HP • Available in nonautomatic or with a variable level MASON COUNTY ENVIRONMENTAL HEALTH piggyback mechanical switch DJA • 1/2"(12 mm)spherical solids capacity with vortex thermoplastic impeller For more information,see Technical Data Sheet FM2 784. ©All rights reserved. ZOELLER PUMP CO. 1502-778-2731 1800-928-7867 I zoellerpumps.com 9 1 rinummor SECURED LID tax SAS TAT SEAL 24' \ 1 f ACCESS RISER 1 1 , = � { , mil\ PUMP , t - i l i { i f 1 j !!S sr P!S W'Alig • I ( FLOATING MAT i i I 1 SOURCE iAPPROVED EFFLUENT FILTER SEPTICthr-A.I''3;`t CL9T ' \ H_____zS__._.____EDIXarrS ‘Lst........, TANK -� SEP 2 6 2023 MASON COON TY EFJVI 01Pea� SECURED LZD yam GAS TIC SEAL -Na, ��9� ►' L rN • I 2 DIAMETER 7 masli GRADE : 1 VALVE r 157 l i FROST SEPTIC Tr; _ --->TO DMA TANKFiki - t 1 f , ICY STORAGE i : ANTI SIPHON 1HiGFi WATSL ALARM LEVEL } t f7,.... ..÷_i I NORMAL TIMER OFF LEVEL ' " VOUilg i i e‘::-...4.____14 IDIDEPENDe ET FLQiT STBt t "� `—► r i i - 4 FOR MAW 1 ENCLOSE)PUMP • 1 ,D O Ok, i T _ �� i MOUPEING CIS VALVE= 18"; =--; ' i PuMP ff'VPICA , =ASNEEDED **Note: Septic Tanks must meet vandards required by WAC chapter 246-272C FIGURE 2 and manufacturer must be on the Dept of Health list of registered sewage tanks.** , r' 8of9 $ tic Deg i q ,„ GnuSeptic of rA t hQ h II'STALLATION & IAINTENANCE • Pressure Distribution Systems r ' s 100349 • 5.�• PAULA JOY JOHNSON .?� } LiC�NS>:ti pESiGNE'ft" 1. Install Laterals with contour of the ground. EXPIRES vu, ‘ �c 2. Install trench bottoms level. of all drainfield laterals. 3. install locator tape or rebar at each end of 4. Install observation ports as indicated on the plot pla�One/��ve soil interface. Glue lateral in drainfield with bottom extending to the dr "T"to bottom so Observation Port cannot be easily removed from ground. Install removable cap on top of port at final wade 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. Pull bio-tube every 6-12 months and flush back into tank. 9. Install anti-siphon valve above pump in pnmp 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, rum 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 primp chamber pumped or inspected every 3 to 5 years. 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. 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 dra 1/8"hole drilled in the discharge pipe above the pump to prevent siphoning. 'v 23. All transport lines under driveways or parking areas must be encased to prevent crusbing. 24. Homeowner is responsible for all property lines. SEP 2 6 2023 MASON COUNTY ENVIRONMENTAL HEALTH b-6-1 - r�