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HomeMy WebLinkAboutSWG2023-00221 - SWG Application / Design - 6/2/2023 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: SWG2023-00221 APPLICANT ROBINSON FAMILY TRS-LIMERICK B Phone: Address: 29100 8th Ave S FEDERAL WAY, WA 98003 OWNER ROBINSON FAMILY TRS-LIMERICK B Phone: Address: 29100 8th Ave S FEDERAL WAY, WA 98003 SEPTIC DESIGNER PAULA JOHNSON -Arrow Septic Phone: 360-898-2255 Designs Inc. Address: 171 E VUECREST DRIVE UNION, WA 98592 SEPTIC INSTALLER Allan Kirk- MASON COUNTY Phone: (360)426-0574 (360 EXCAVATING INC Address: 30 E WILCHAR BLVD SHELTON, WA 98584 Site Address: 711 E BALLANTRAE DR Primary Parcel Number: 321275000016 Permit Description: Compliant repair 2bd pressure trench Permit Submitted Date: 06/02/2023 Permit Issued Date: 06/14/2023 Issued By: Rhonda Thompson Current Permit Fees Paid: $780.00 (additional fees may be required upon installation of system). Permit Expiration Date: 06/12/2024 (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 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. 4/ OFFICIAL USE ONLY--Cy-C.4 MASON COUNTY DATE RECEIVED: ra _ �� � D .flf-I I. COMMUNITY SERVICES ^MOU E D RM___ �m m • Public Health(Community Health/Environmental Health) N 0 ' 366427.9670,er.400 or 360-275-4467,est.400 / \ \ 'Co 415 N.6th Street-Shelton,WA 98584 SWG aO — Cpb l 1 5_ x SWG Q'�^v� 0 x Z w ON-SITE SEWAGE SYSTEM APPLICATION n APPLICANT I P-CNE m m Robinson Family Trust (206) 304-1506 Lee Robinson r z MAILING ADDRESS-STREET.CITY,STATE.ZIP CODE g 29100 8th Ave S Federal Way WA 98003-3704 m 00 m SITE ADDRESS•STREET CITY.ZIP CODE I- 711 E Ballantrae Drive Shelton WA 98584 m I c� NAME OF DESIGNER PHONE 0' I N Arrow Septic Designs (360) 898-2255 NAME OF INSTALLER PHONE Mason County Excavating (360) 490-3144 0 PERMIT TYPE(select one) DRINKING WATER SOURCE - I 1`) GI RESIDENTIAL OSS E COMMUNITY OSS E COMMERCIAL OSS E PRIVATE INDIVIDUAL WELL PRIVATE TWC-PARTY WELL Z I TYPE OF WORK(select one) PUBLIC WATER SYSTEM I NEW CONSTRUCTION/UPGRADES I REPAIR/REPLACEMENT OTHER DETAILS(select an tna!apply) 0 TABLE IX REPAIR I Ul SUBMITTALS 0 SURFACING SEWAGE 121 EXISTING FAILURE 0 SHORELINE ® [�DESIGN FORM(REQUIRED) Ii SEPTIC DESIGN(REQUIRED) BEDROOMS LOT SIZE I O o EIWAIVER(S)(IF APPLICABLE) 2 .27 Acre 0 O DIRECTIONS TO SITE AND SITE CONDITIONS'(ec locked gate) Follow Highway 3. Turn left onto E Mason Lake Rd. Turn left onto E Ballantrae Dr. Turn I I O slight left onto E Ballantrae Dr. Driveway will be on the left with "711" written on yellow post. o I o I — SITE MUST BE FLAGGED FROM MAIN ROAD AND TEST HOLES MUST BE FLAGGED WITH TEST HOLE NUMBERS. I a) OFFICIAL USE ONLY BELOW THIS LINE UPGRADE/FAILURE SOURCE(fa reporting Nrposes) 0 VOLUNTARY 0 MAINTENANCE/PUMPING 0 BUILDING PERMIT 0 HOME SALE 0 COMPLAINT 0 OTHER INSPECTOR SOIL LOGS COMMENTS/CONDITIONS �-11 . 6131 E)t-wk. S 3Z+- -1-i t 1 k\ i : S6v -L RECORD DRAWING AND INSTALLATION REPORT SOIL CODES: V=VERY G=GRAVELLY S=SAND L=LOAM Si=SILT C=CLAY E=EXTREMELY R=ROOTS I REQUIRED FOR FINAL APPROVAL. INSPECTOR SIGNATURE DATE APPLICATION EXPIRATION DATE 1 APPLICATION APPROVED,ISSUED BY DATE \11-YWSMAdYM (41 7t7/) c Il 1 7/ 12t1 6/11 t- THIS FORM MAY BE SCANNED AND AVAILABLE FOR PUBLIC VIEW ON THE MASON COUNTY WEBSITE REVISED 12/7/2015 I - DESIGN FORM—PAGE ONE Assessor's Parcel Number: 3 2 1 2 7 — 5 0 — 0 0 0 1 6 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. .11'axinnun paper size: 11"X 17- - • 'PARCEL 141tENTIFICATION 3` DZZ I Designers Name: Arrow Septic Designs Permit Number: SWG WZ Applicant's Name: t Robinson Family Trust Designer's Phone Number: (360)898-2255 Mailing Address: 29100 8th Ave S Designer's Address: 171 E Vuecrest Dr Federal Way WA 98003 Union WA 98592 City State Zip City State Zip - - DESIGN PARAMETERS Treatment Device ❑Glendon Biofilter ❑ Sand Filter 0 Mound 0 Sand Lined Drainficld 0 Recirculating Filter.Type: ❑ Aerobic Unit MakeiModel 0 Disinfection Unit Make:Model Other: ,.. Drainfield Type l ❑Gravity 'Pressure [ti/Trench ❑ Bed ❑ Sub Surface Drip Septic Tank/Drainfield Specifications Laterals Number of Bedrooms 2 Schedule/Class 40 Daily Flow: Operating Capacity 180 epd Length 25 ft Daily Flow:Design Flow 240 gpd Diameter 1.25 in Septic Tank Capacity(working) 1000 gal Number 4 Receiving Soil Type(1-6) 3 Separation 5 ft Receiving Soil Appl. Rate 0.8 gpolft` Orifices Required Primary Area 300 ft2 Total Number of Orifices 20 Designed Primary Area 300 ft- Diameter 3/16 in Designed Reserve Area 300 ft2 Spacing 60 in Trench/Bed Width 3 ft Manifold Trench/Bed Length 100 ft Schedule/Class 40 Elevation Measurements Length header ft Original Drainfield Area Slope 3 % Diameter 1.25 in New Slope.If Altered 3 ojo Preferred manifold configuration used? 0 Yes 0 No Depth of Excavation Up-slope 8 in Transport Pipe from Original Grade Down-slope 7 in Schedule/Class 40 Designed Vertical Separation 24 in Length 40 ft Gravelless Chambers Required? 0 Yes 0 No RiOptional Diameter 2 in Pump Required? lif 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 60 gal Drainfield Squirt Height'Selected Residual(head) 2 ft Chamber Capacity (flood) 1,000 gal Pump controls:Please check those required. Uppermost Orifice Higher CI Lower than Pump Shutoff C�Event Counter Capacity(c� ' Total Pressure Head 11.8 gpm l Timer f�El1pse Meter Calculated Total Pressure Head 10.32 ft If Timer: Pump on 3 minutes ,pump off 6 hours Comments DESIGN FORM-PAGE TWO Assessor's Parcel Number:3 2 1 2 7 - 5 0 -- 0 0 0 1 6 Permit Number: SWG DESIGN CHECKLISTS Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch Et Test hole locations Drainfield orientation and layout Reference depth from original grade: g Soil logs Eg Trench/bed dimensions and Eg Septic tank g Property lines critical distances within layout 12f 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: lig Measurements to cuts, banks,and locations tifLaterals,trench/bed,top and surface water and critical areas g Observation port location bottom ❑ Location and orientation of gi Clean-out location 0 Curtain drain collector curtain drain and all absorption lg Manifold placement 0 Sand augmentation components 6d Orifice placement Other cross-section detail: Location and dimension of Lateral place t with distance g Observation ports/clean-outs primary system and reserve area to edge of be. ./� g Other Information EZI Buildings g Audible'vi a referenced Yes No 0 Direction of slope indicator r . ,,, [� 0 Designstaked out g Scale of„r�ing'. . Mkvn on scale ❑ Waterlines b� ,, o� .,�� �� 0 g Recorded Notices attached E� Roads,easements,driveways, ' ti ❑ t�Waiver(s)attached parking ...•. 1f" `•_^ti Ig 0 Pump curve attached fit North arrow and scale drawing ryr!�.' : S 510.349 .�<,/• g ❑ Evaluation of failure shown on scale bar ' mot. . JOY gidN N .., Non-residential justification ommoi mi, �� 0 l�Waste strength 0 g Flow DESIGN APPROVAL The undersigned designer must ben ed by stal rat time of installation Bf Yes 0 No Co- 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 on-site regulations: (LtreNti\-' Col ( I-73 Environmental Health Spec alist Date CAUTION: DESIGN APPROVAL IS VALID ONLY UNDER THE FOLLOWING CONDITION: ✓ The design is stamped"Approved"by Mason County Public Health. (�✓ ( (2' 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. Updated Date: 12/7/2015 Arrow Septic Designs 171 E. Vuecrest Dr. Union, WA 98592 May 30,2023 Mason County Department of Health Services 415 N 6th St Shelton,WA 98584 RE: Robinson Family Trust(Parcel #32127-50-00016)Evaluation of Failure Dear Inspector: Attached is a repair septic design for a property located at 711 E Ballantrae Dr, Shelton, WA 98584 in the Lake Limerick community. There is an existing 2-bedroom cabin built in 1967 that ties into a gravity trench septic system of the same era. The existing system has a 1,000-gallon septic tank followed by a 100' 1 x 2' w (200 s.f.)gravity drainfield. At a pumping service for the home sale, it was determined that the tank had root infiltration and the d-box and drainfield were completely full of roots. The old gravity drainfield will be abandoned and the tank will be decommissioned. We are proposing a new 1,000-gallon minimum 2-compartment septic tank with risers and lids to the surface and an effluent filter followed by a new 1,000-gallon single-compartment pump chamber. The new proposed drainfield consists of 300 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 facilitate ongoing operation and maintenance. This is a compliant repair with 24 of vertical separation. There are no known surface water or well setback issues and we have designated a full reserve drainfield area. The property owner's contact information is as follows: Robinson Family Estate Attn: Lee Robinson 29100 8th Ave S Federal Way, WA 98003 (206)304-1506 If you need further information, please contact my office at(360) 898-2255. Sincerely, • APPROVED J U N 14 2023 -*'Z PAULA5 JOY3JOHNSCN I}, MASON COUNTY E,NVIRONYEkrTAL HEALTH �1 icts>` 1D�SicN�ft RET EXPIFFIV Paula J. Johnson Licensed Onsite Wastewater Treatment System Designer ram- 2 ® -P\ • i . . ,'Fy - - •,1 f. `\ y2 v l\41 1A.4 ; \ \>... gy O L f.4 4 r `4:Z.: Y S:, try,: i\w.. w w M f e Cc .., 1P o e yy i 1a1 T ) J - o w a% �'3�°. o $•.. 8 o'r. •, ;'.a'' ,. s •. ��° ,;°'r o o� 'a •L N`—4.° a • �J • og 5 a , Z `...._ , z. _... . RR i \-.--r . • . : ,,\ , 4 ..,:...4,r: •..4, .' . "$ (f) r:...,..= • .\ / . • . .. .Z 7 1 , ‘,/ • . .;\ • ii % *.o. G., 0./ i,,,t *:!-----1." ki, -A2*'a------j i .,-. • • Q V ! • r 7 /F \4 .ICY y O, y , t , t`Q ° ` ....4 4:11 Ni • i . t r �] ' ` Q • ti Q • .0 3 c ylA,esc Vg • .. \,,,1 • .,. .`: • ` � �,fpg � _:': et 34., die. , v \ Z0��J:iiQ L 1Q� iL� ,?is '-Y \ I .1=Ls'1Li' 1.,� .$'!. y rpK�Yc___ 7 .k. , .,+' y.� � / �4 I w � ' 1. 1 XI crr\ • • APPROVED ~'.\ ` Q JUN 14 2023 14 MASON COUNTY ENVIRONMENTAL HEALTH •• RET -10 r,.. -17.,\`• t,A:1- ,.4 .. t1/4 ... 1 to __-_;-'...11_.ola-.&.V.—_ (1• Cif\L...,i ' ibacs• ���2t-�fl-o \' \ Ol Bhp aaTQ15 .• )Z �,�� \ C, \'\.,-"� �= asi*kol., ^ xo ,zss. ` �� �ty%vaY`t \ 52:, ; s -f. CDT"S \ �5e cil.. ' k(6‘ \ 4' ', v,e,p-wv ---#-;,^-3'): 1.5 t-Z.001"S \ \• -vID I •l2�cG-c�J� .-G1) Rai . , • ``-.. �—'� ;BOG .E ..5 co- MOT cl- S -* S LEE.VE WP<E, E ( -'� '� \ 4 - ��i i tIN \01 of pcN\i ir,sCOM ‘3S}ON \ —� \ �-4' SLP-71c c,or1PQtis1v-'I 01,7" ptN� ' / F E COU,N-t-EREP gi:263t)t1/4 1 \)''s * S \ Audio-Visual! - Co b`r e3-. -c . c� .: , \ - - raw• \TtiA,tc.� © knout ° \ `Trek..-4i c. 0-C 3 1000 Gallon Septic Tank h \ O� SL Efauen att*nent with 44C) \ c- — Effiumt Fester (La.� t�4 1000 Gallon Pump C per .At \ \ — "^ S Q • h9 \ OValve Control Box OP \ (4. ' X 25 j -{ Y i y tcs..v y b . c- j .. / /_:.:7/ / -..- \P \:'‘I‘ -p�e.v0 4 a�pd v e. APPROVED , ,s. Ny - .p 1� / / Q¢ • JUN 14 2023 p,..1 w„hit �� MASON COUNTY EN RONMENTAL H #,w z; - -•.`�;'} / �� RET % �I ! 9 , �- a 4- c '-'� N0'Z PAULA JOY JOHNSONt\� 1�5�15�Y 1�� EXPIRES S/7I. 1 A,kv.e, box 10-'r-ki,1 1.2s ` 134,1k va, ,Ae-s 0%4 e -Ce. rz.c7-1-`a• e-t--7*- 4-1/4' 'LS `1l°•'ca( bbSevJar`Fto� Povf wells s `r • • t_ZS 2 ,/•\ I V-.( L or e- TSB �"_ 0 rr . 23"' !i B.,, / • [.... V✓RYA po of 0,•• fn'��. 4""" (UJ t-f°.'• sroo3as ii,),0t' PAULA JOYJOHNSO LiC SE bESioNExt ERFS /1� Typical obey Pert Detailed Drainfield Layou Scalt i• : 10" rice Gra* 1 I I L 1 clo to t2' 0 IV' 20. Caw :: Fifer Fabric onahol Grade1 . • 3/4• to 2 if 14 (4)• 251 1 .25 Sched. 40 Laterals -r,, 2 125' La�°l 1-111 (S) 3/ 16- Orifices @ 60- O.C. z ,,,� s• Per Lateral. 1st 8. Lost Orifice ...jr_ • �. ,. 30- From End of Trench 4- 36 Screw-On Ccp 45 Oegree Ebm Laterei • Drainfield • Cross-Section View o.:a - , out Not To Scde - • — Note Cioanout to be from 0 to 6 ewes billow 0 • a APPROVED Grose. t . , Reboil. , OW To B. 4• PVC Pipe tram 8efkm of Trench JUN 1 Reaxed at the Me at Eat Laterd To Frishod Grade. e � anal be 4 2023 Installed a+ ab.er > A • !ASON COUNTY ENVIRONMENTAL HEALTH A r r O W S e p t i DeCr -signs Gr<sd-Ors Tea f'S I ill S hirioute of Teed ` o ;, s� RET C360) 898-2255 • S &�° Length Length Orifice # Distance from Distance from Lateral# (In.) (Ft.) Spacing Orifices Feeder Line (In.) Cleanout(In.) 1 300 25 60 5 30 30 2 300 25 60 5 30 30 3 300 25 60 5 30 30 4 300 25 60 5 30 30 Total Lateral Length 100 Total#Orifices 20 GPM = 11.8 Dynamic Head Calculations Selected residual pressure: 2 ft. Length (Ft.) #Orifices Transport Pipe 40 20 0.11 ft. Feeder Total Lateral Line Length Lateral#1 25 2 27 5 0.04 ft. Lateral#2 25 7 32 5 0.05 ft. Lateral#3 25 12 37 5 0.06 ft. Lateral#4 25 17 42 5 0.06 ft. Total Elevation Lift 8.00 ft. Total Dynamic Head 10.32 ft. I I APPROVED ..„ g. JUN 14 2023 r' A, MASON COUNTY ENV1RONYBTAL HEALTH � RET is v ., N • 5100349 .f•i/ PAULA JOY JOHNSON .:y i EXPIRES i��,i J 1v:' ,' ( 151; 152, 153 T. s • Flow-Mate Dose-Mate 0 y ect.uo Ila\z,,4 In high head dewatering or effluent This is our fastest growing Line of effluent applications where pumping pumps.The 1 50 series is truly a workhorse performance is critical, this robust J designed for reliability under extreme family of pumps is known for reliability, conditions in an effluent environment.150 durability and performance. These series pump curves cover a wide range pumps are especially suited for harsh 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, cool run design and corrosion-resistant, trouble-free product powder coated epoxy finish,in addition to H the hermetically sealed,oil-filled motorand Z non-clogging vortex impeller add up to a = W ' long-lasting,trouble-free product. �e , y LL MADE INTHE USA o M.HUMOR POlt01•YY11 LJ. MADE INTHE USA w.aw.1. W =-- — — 0 APPLICATIONS: APPLICATIONS: 2 • STEP or onsite applications • STEP or onsite applications APPROVED N • Water transfer • Light commercial dewatering • Light commercial dewatering JUN 14 2023 SPECIFICATIONS: SPECIFICATIONS: • 1-1/2"NPT discharge MASON COUNTY ENVIRONMENTAL HEALTH • 1-1/2"NPT discharge • 3/10 HP through 1/2 HP • 1/2 HP through 1 HP • Available in nonautomatic or with a variable levelRET • Available in automatic or nonautomatic piggyback mechanical switch • Model 137,139,140:1/2"(12 mm)spherical solids • 1/2"(12 mm)spherical solids capacity with vortex capacity with vortex impeller thermoplastic impeller • Model 145:3/4"(19 mm)spherical solids capacity with For more information,see Technical Data Sheet FM2784. vortex impeller • Bronze construction available(139 series) • High head version available(145 series) • Double shaft seal versions available for added protection on models 140/145. For more information,see Technical Data Sheets FM2782,FM2783. l' a2 PUMP PERFORM•NCE CURVE 1 i PUMP PERFORMANCEC1.RV= MODElC51 521153 MODEL 137040,145 50 n ,■■■■■■■■■ 14 45 153 tu. a ,■■■■=■■■ o .,■.■■■■■■ 12- 40 '- ■,■■■■■■■■ w 35 152 - y ■■,,.■.■■■■ U 10- ,'.■■.■■■■ a 30 99 ■.,,,■■■... o 8- 25 151 Yr. - a ■■■`■■..■■ a 0 6- 20 ■■■■,■■■■. @ 1 ..■■",..■■ 4- 15 • ■bENIU ■■■ 10al 1■11\11!111\MIN 2- • ■u■11ai111110..uu 5 ■•■u■ii•1\• D ■■■■■111■■®® GALLONS 10 20 30 40 50 60 70 80 90 100 IIIIIIIII Gk.. a » w x x >< w w x UTERS 0 40 80 120 160 200 240 280 320 360 LRRS• R HJ 20 L< ROO 1111111.1110 •52c 56 FLOW PER MINUTE C..6500 8 ©All rights reserved. ZOELLER PUMP CO. 1502-778-2731 1800-928-7867 I zoellerpumps.com Np--6 1 0 IS— , SECURED LID WM GAS"Miff SEAL . . f • i - 24'=must \i [/ ACCESS=SIM 'a- • -........--...--..n MESH GRADE ! --41-----": ; --------- , , 1 ' - ...-, •, 27 m17 1 ' 'f..1•%..'..-"111-'-""'....."....."774\-", ..:T ..-...L.J.-.. TO PUMP 'i ' ( .i ".------4• i ----s- *AMUR 1 $ ___ I - I -- ---------- --11 1 i 1 r 1 '--1 il 1 FROM MWAGE 1 i t 1 1 Lit FLOAT/NG MAT ; i • 4 SOURCE • 1 it . i 1 i 1 APP'.... 7.....: ROVED • , . , ./... 1 1 6...: t 1 i EFFLUENT FILTER . , (ill I i 1 I a APPR mmEms )1411 ' I . I JUN 1 4 2023 sem=TANK, • MASON COUNTY ENVIRONMENTAL HEALTH • rTYPICAL1 RET SECURS7 Up vvrrig GAS Tieaqr SEAL Tiensamer,wizen Ir- - 24"DIAMETER \ 1 . SUMO . mai GRADE - N t I 4,-.:17 jz 74f PROM SEPTIC TAMC \ - ------)j =1"EK",; ,-. i • ,---"CIDRADIBIELD ;4 y EMERGENCY STORAGE i 1 I I ANTI SIPHON MOH WATER ALARM Lem li it i . 1. I VALVE* • 4 rr-C I : 1 1 , Noma TIMER OFF LEVEL WORXING VOLUM ; , ,. , -------- -/it. i :.,..1 1 si FLOAT STDI •; - I RIR R.OAT ENCLOSED PUMP . t -IM -+-e-1 1 : SEDENT SHROUD i -ThiV-. 1 I am=VALVE v I [ •- saprocurrs la 'L.-; 1:k. I _I SUBNERSZBLZ • CENTRIFUGAL. 4 PEN4P ' MatECIAAMER eTYPICAI.) . t AS NEEDED "Note: Septic Tanks mu...t meet standards required by WAC chapter 246-272C • • 1 FIGURE 2 and manufacturer must be on the Dept of Heath list of registered sewage tanks." PI $ 0-e 9 IMMOMMIC .,f .;-75;•..44(kw Septic Debt u► Ip5 .1 �� LNSTALLATION & MAINTENANCE i/0 . • .4 -.4). • Pressure Distribution Systems 510.349 '�1sj' `%ct PAULA JOY JOHNSON•••7\ LiC �SC��\b ft" 1. Install Laterals with contour of the ground. `�` ,� ,el v b 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 drock''nat;ve soil interface. Glue ""I"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. i 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 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 ranifold 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 turni g 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 grainfield 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 drain.field and reserve area. 16. Have the septic tank and pump 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 desiDa null and void. 21. All manhole lids and access, sampling or i.nspecdon ports must have locking covers and be located at ground level. 22. All pressure systems with a pump chamber outlet higher than the dralnfleld must have a 1/8"hole drilled in the discharge pipe above the p mp to prevent siphoning. 23.All transport lines under driveways or parking areas m=, t be encased to prevent crushing. 24. Homeowner is responsible for all property lines. APPROVED F--C6 JUN 1 4 2023 q\ 0 C-° MASON COUNTY ENVIRONMENTAL HEALTH RET