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HomeMy WebLinkAboutSWG2023-00165 - SWG Application / Design - 5/2/2023 eri. • MASON COUNTY 415 N 6TH STREET,SHELTON,WA 98584 SHELTON:360-427-9670,EXT 400 BELFAIR:360-275-4467,EXT 400 W ,R Public Health & Human Services ELMA:360-482-5269,EXT400 FAX:360-427-7787 On-Site Sewage System Permit: SWG2023-00165 APPLICANT MORENO JAVIER ESCAMILLA Phone: Address: 2138 W RAILROAD AVE SHELTON, WA 98584 OWNER MORENO JAVIER ESCAMILLA Phone: Address: 2138 W RAILROAD AVE SHELTON, WA 98584 PAULA JOHNSON -Arrow Septic SEPTIC DESIGNER Designs Inc. Phone: 360-898-2255 Address: 171 E VUECREST DRIVE UNION, WA 98592 Site Address: 2138 W Railroad Ave Primary Parcel Number: 420241300320 Permit Description: Noncompliant Repair-2BR Pressure Permit Submitted Date: 05/02/2023 Permit Issued Date: 05/11/2023 Issued By: Jeff Wilmoth Current Permit Fees Paid: $780.00 (additional fees may be required upon installation of system). Permit Expiration Date: 05/05/2024 (based on date of inspection) Permit Conditions: 1 Proposed development subject to zoning requirements and approval by the planning department staff per Mason County Title 17. 2 Permit must be installed by a Mason County Certified Installer unless prior written authorization from Mason County is obtained. 3 Drain field installation not to exceed designed upslope and downslope depth specified on design form. 4 Installer is responsible for obtaining Mason County installation approval prior to backfill of system components. 5 Installer is responsible for obtaining Septic Designer/Engineer installation approval prior to backfill of system components. 6 Mason County Asbuilt Form, Record Drawing, and Installation fee must be submitted for final installation approval. THIS PERMIT MUST BE ONSITE DURING INSTALLATION OF OSS. PROPERTY OWNERS ARE RESPONSIBLE FOR DETERMINING AND MARKING ALL PROPERTY LINE AND EASEMENT LOCATIONS. THIS PERMIT MAY BE REVOKED IF THE SITE CONDITIONS HAVE CHANGED SINCE THE SITE WAS INSPECTED AND DESIGN APPROVED. FINAL INSTALLATION APPROVAL IS REQUIRED PRIOR TO TEMPORARY OR FINAL OCCUPANCY OF ANY RELATED STRUCTURES. For Final Inspection visit: masoncountywa.govlhealth/environmental/onsite/oss-inspection-request.php or call: 360-427-9670, extension 400. OFFICIAL USE ONLY C lls DATE RECENED: MASON COUNTY �' Z cn D C 0 r COMMUNITY SERVICES ANI RECEIra CO o M II < gj Publk Health(Community Health/Environmental Health) CN 0 415N.6th Stnet-exi.She an,W 965847.e2400 SWG az'Lb _00'to S15N.bth SbKt-$htlton,WA 9asa< O Z ON-SITE SEWAGE SYSTEM APPLICATION E 73 rn n m APPLICANT PHONE Javier & Jessica Moreno (360)490-8917 Z MAILING ADDRESS-STREET,CITY,STATE,ZIP CODE 3 2138 W Railroad Ave Shelton WA 98584 00 SITE ADDRESS-STREET.CITY.ZIP CODE I•41. same NAME OF DESIGNER PHONE rV Arrow Septic Designs (360)898-2255 NAME OF INSTALLER PHONE 0 CD Workman Contracting, LLC (360)463-9573 - I N PERMIT TYPE(select one) ��!! DRAKE NG WATER SOURCE 0 ii RESIDENTIAL OSS CICOMMUNITV OSS Ei COMMERCIAL OSS h:PRIVATE INDIVIDUAL WELL E PRIVATE TWO-PARTY WELL Z TYPE OF WORK(sefecr one) (p PUBLIC WATER SYSTEM , NEW CONSTRUCTION/UPGRADES l REPAIR/REPLACEMENT OTHER DETAILS(select all that apply) 0 TABLE IX REPAIR SUBMITTALSMIp CCrr 0 SURFACING SEWAGE EXISTING FAILURE 0 SHORELINE I�DESIGN FORM(REQUIRED) ![!:'SEPTIC DESIGN(REQUIRED) BEDROOMS LOT SIZE co I co �IWAIVER(S)(IF APPLICABLE) 2 BR 12,632sgft o to DIRECTIONS TO SITE AND SITE CONDITIONS (ex locked gate) Go out W Railroad Ave. Destination on (R). Double black mailbox, shared driveway, bright blue house and garage. Test holes in back of lot. o w --+ N 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/FAILURE SOURCE(for reporting purposes) 0 VOLUNTARY 0 MAINTENANCEJPUMPING ❑BUILDING PERMIT ❑HOME SALE 0 COMPLAINT ❑OTHER: INSPECTOR SOIL LOGS ! COMMENTS/CONDITIONS ; , � v S ""° i ' DN- gN11br i? ,67 , L ,i-- n"v J Ij MAY 0 2 2023 /1111 y l �, 1 I I RECORD DRANANG AND INSTALLATION REPORT SOIL CODES: V= Y G=GRAVELLY S=SAND L=LOAM S:=SILT C=CLAY E=EXTREMELY R=ROOTS REQUIRED FOR FINALAPPROVAL DATE APPLICATION EXPIRATION DATE N A i TION APP VED!ISSUED BY DATE 5... ISPE TOR SIG TURF / ab 14 ANtf'''}e"- TAIS 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: 4 2 0 2 4 — 1 3 — 0 0 3 2 0 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.Maximum paper size: 11"X 17" . PARCEL IDENt'I ICATION_ Permit Number: SWG 2 0 B 74 S Designer's Name: Arrow Septic Designs Applicant's Name: Javier Jessica Moreno Designer's Phone Number: (360)898-2255 Mailing Address: 2138 W Railroad Ave Designer's Address: 171 E Vuecrest Dr Shelton WA 98584 Union WA 98592 City State Zip City State Zip f. , : w ,_ ,. DESIGN PARAMETERS Treatment Device ❑Glendon Biofilter 0 Sand Filter 0 Mound 0 Sand Lined Drainfield 0 Recirculating Filter,Type: ❑Aerobic Unit Make/Model 0 Disinfection Unit Make/Model Other: Drainfield Type ❑Gravity FEPressure rifTrench 0 Bed 0 Sub Surface Drip Septic Tank/Drainfield Specifications Laterals Number of Bedrooms 2 Schedule/Class 40 Daily Flow:Operating Capacity 180 gpd Length 45 ft Daily Flow:Design Flow 240 gpd Diameter 1.25 in Septic Tank Capacity(working) 1,000 gal Number 3 Receiving Soil Type(1-6) 4 Separation 5 ft Receiving Soil Appl.Rate 0.6 gpd/ft2 Orifices Required Primary Area 400 ft2 Total Number of Orifices 27 Designed Primary Area 405 ft2 Diameter 3/16 in Designed Reserve Area 405 ft2 Spacing 60 in Trench/Bed Width 10 ft Manifold Trench/Bed Length 135 ft Schedule/Class 2 Elevation Measurements Length header ft Original Drainfield Area Slope 3 % Diameter 1.25 in New Slope,If Altered 3 % Preferred manifold configuration used? Ct 'Yes 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 260 ft Gravelless Chambers Required? 0 Yes 0 No &I Optional Diameter 2 in Pump Required? fifYes 0 No Dosing and Pump Chamber Pump/Siphon Specifications Number of doses/day 4 Diff.in Elevation Between Pump&Uppermost Orifice ft Dose quantity 60 gal Drainfield Squirt Height/Selected Residual(head) 2 ft Chamber Capacity(flood) 1,000 gal Uppermost Orifice giHigher ❑Lower than Pump Shutoff Pump controls:Please check those required. Capacity @ Total Pressure Head 15.93 gpm EiTimer li 'Elapse Meter lifEvent Counter Calculated Total Pressure Head 15.96 ft If Timer: Pump on 2 minutes ,pump off 6 hours Comments PPROVE MAY 1 1 2023 'ASON-COUNTY ENVIRONMENTAL HEALTH 1 ii 01 JBW 7' i DESIGN FORM-PAGE TWO Assessor's Parcel Number:4 2 0 2 4 - 1 3 -- 0 0 3 2 0 Permit Number: SWG DESIGN CHECKLISTS Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch Eg Test hole locations lif Drainfield orientation and layout Reference depth from original grade: 66 Soil logs lif Trench/bed dimensions and g Septic tank FZi Property lines critical distances within layout 6d Drainfield cover lf l,ZI Existing and proposed wells D-Box/Valve box locations Reference depth from original grade within 100 ft of property lil Septic tank/pump chamber and restrictive strata: ❑ Measurements to cuts,banks,and locations lif Laterals,trench/bed,top and surface water and critical areas li Observation port location bottom ❑ Location and orientation of lig Clean-out location 0 Curtain drain collector curtain drain and all absorption EZf Manifold placement 0 Sand augmentation components Orifice placement Other cross-section detail: Eid Location and dimension of Lateral placement with distance g Observation ports/clean-outs primary system and reserve area to edge of bed g Other Information lZI Buildings ir lidetc tc referenced Yes No lit Direction of slope indicator lif Scale of dra • % n on scale g 0 Design staked out ❑ Waterlines bar r, ) g 0 Recorded Notices attached li Roads,easements,driveways, ) ❑ t1 Waiver(s)attached parking liffJP `1. C2f 0 Pump curve attached lid North arrow and scale drawing •1' •..T. ' l� ❑ Evaluation of failure shown on scale bar .,:--- 10 349 N�� Non-residential justification Q, ,•P JOHNSON ; 0 Er Waste strength LICI 'S a ES r.\t?) 0 lif Flow DESIGN APPROVAL The undersigned designer must be noti e by ins le t time of installation lid Yes 0 No 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 o -s e regulations: t sbtiluLtw-N-I____ E . ir•0j•1•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: 5^ 5-- 2 Y ✓ 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 April 4, 2023 Mason County Department of Health Services 415 N 6th St Shelton, WA 98584 RE: Javier&Jessica Moreno (Parcel#42024-13-00320)Evaluation of Failure Dear Inspector: Attached is a repair septic design for a property located at 2138 W Railroad Ave, Shelton, WA 98584. There is an existing 2-bedroom home that ties into a gravity trench septic system. The existing system has a 1,000- gallon single-compartment septic tank followed by a gravity drainfield. This drainfield was documented after-the-fact in 1998 but the actual sizing is smaller than the drawing. At the last pumping, it was found that the drainfield is not taking water the way it should. Upon further investigation, it was discovered that the drainfield is saturated and ponding. Because of its age,the existing 1,000-gallon single-compartment septic tank should be decommissioned or removed. We are proposing a new 1,000-gallon minimum 2-compartment septic tank with risers and lids to the surface and an effluent filter. It will be followed by a new 1,000-gallon pump chamber. The new drainfield consists of 400+s.f. of shallow pressure trenches using an application rate of 0.6. The drainfield will be located on the lot behind the house in a high-and-dry location (see recorded Declaration of Covenant). 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"+ of vertical separation. There are no surface water or well setback issues. The property owner's contact information is as follows: Javier&Jessica Moreno 2138 W Railroad Ave Shelton, WA 98584 (360)490-8917 If you need further information, please contact my office at(360) 898-2255. Sincerely,4 5st , • 0 , ,4 • ..V\ PPR 0 ,0 -> r� MAY i 1023 ;`0.:: PAULA JOY JOHNSON . \ MASON COUNTYFNV/RAN Ltel~t�fSl= YJES(G•tiM• rw� Ns:ss- s: ii � �° Jelly MFNTgL HEALTH Paula J. Johnson H/ Licensed Onsite Wastewater Treatment System Designer V Cl W I ' ,\ i'"�i` A . i i i ilag01" X g' @war `-.\ ZiAEi A, C 4gV xY�R s z € • c A I`3A!!;g 1 R" y AG PI pp h • ' §x $ 41^ . A'� Tye CA y C7 a 1 spy t. . o . y0• . �..R za R q r a �^ a076- g r n Z(11 b• oR 4g'bl$ 'eY o S •$ zz z + O `L tv • $ Fd y R 4S • o &"• •, s » irr ZOO a k xv§ittag 1 .-0. ',..,,,, All f * _ . : s N' =„fib• gT.,_ c4 `.1,' .. r aly,-ilqn;T � i 1 1 1 ! J( �� - a. I [9 a a�a � 2' ` =a I ail I r cn tl ' ;o'q' rs •• • O I �I • ` ' y• " ti `. O It 3 r m p S 077, • !k 8 <E.yp a; ti ce m ' 4654b ect • 10601 8 R �� r zv gti II z"".Zc ram'Ai1. �Cn N NO `' 8 .3-, , ow < X� � z4 PPRÔVEfl � 3VA Am PDA0 R4'7.7;t0P 3 �� a .nN PAH -, g•Y 0w6.0, g > A.g l'B4 R N •A MAY 1 1 2023 'r V V aN A H MASOk COUNTY ENVIRONMENTAL HEALTH m N 11 z at a 0 a o i Ali #^ .n � til �R I•II - a !I o W m . p 2;' kv N N x 1 to x:- < Ay , &b Fr 20 u 6 Q �-i iA cmi € 4 R 7 Rb 6,0 4R 2 s A: I t y'ily r=n v 3_ i m v q a I x ap`a' � z Ut M z 8 r _ n os4 c3 n ~ '! yN p Y } -si I r 1q ea 1.1 '. o• , V! z !r S G • 8 ,I.:,i m A< .ry'. p v. 5 Z 4202-4°- 1 - 9035, Se : 1 „ _ qo ` *see dee,la- e-v\ o - 4 �0 ao \` 0... .. CD V a 'fi P P.9- \\`�`\ . �� tk.—:4 20 Z4— 0 4.' ..---?...‘ �� � —0 320 4.2 \ \ P � / 19� qB S�4 (3)3 t x 4'S` Pr ,,,n,y \ D•F Tve1 e5 Q ` O .G. L.u;-{ RQS 1e a.1pove a...,d bas.de 4-PPVO X. 0j f o w dec .w1,ssionea,► 7 _ Wel( ¢ , 401 \O N, Zi1,24 2, ga,•.�e — Cr;0ad"e reeLjIt,4-ilicy z z x9 ha\t5e ` -• • t owa 13.F. ae ` Qr to, -� b e. abd ® C I ,__, : �1 Rai l ro a_ol Jt `'e c1Ya.;�,�Q. 42024-l3-Oo32D camas . 4=.�.d �. 5 Ke *` , 0_, z4l3o ,'�' ,Ay � Audio-Visual Alarm v, r 0 �;,�. 1pCY�M ->• V-0.04S -TCO rn-� /ti r• cx 1 0 Cleanout 5 1 V - l0 cm.") 4.1 Z0 4 6 t 1 a J• 3 1,000}Gallon Septic Tank �� =' '�./`- `- stoo3as ;r 3 Z: U —�� ram'e ILi sa,,,s ',:. PAULA J0Y JOH •3` 2-Compartment with � J y ,� •�iC�S� � _(Nory _ . Effluent Filter {p 5 � e�l.! _Q,Y,.,�,, 6�QiS �A� 1, E'fi . 3 EXPO4 1000 Gallon Pump Chamber .v J 4- 0 @ l) "" s�9 5 Valve Control Box P P R O V E OA© old +a-4.V-- Ao b� MAY 1 1 2023 If de co v.; SS l o vse-cf MASON COUNTY ENVIRONMENTAL����,A HEALTH 0v ✓2w,oJe01 co 0 Li„ ' o .C. N`-^^ • .f1S - Typical Ctelarvation Port Detailed Drainf field Layout NO . sea �s • = Sa' 0' 10• 20' t3tor Pattiz 9-12• / Fil Cover • Grade._ 3/4' to III 2 , —- ,2s• 12" C3) 45' Laterals l if Orekt s' : (9) 3/ ? 6" orifices @ 60 O.0 Per Lateral. 1 st & Last Orifice A---------36. 30" from End of Trench. Reetriaeve , ;,,,„� on cop Dr i i Cross-Section View ,� Devoe ,,, • To ScaleL.atorat ° 1 'I'Z' lit) 202344:4)4 Eno al' Dital cum Oka - Mp� �RVIR���ENSP�hEP�" :�,�, Nay , °` ;', '�� L7eerncst to x from 0 to 6 babes Oda* CQk Y' ��Iti• $ 'I ,, ' `� Frisbee Grose. ► tc one 0 d�, Rebs% Clem a 1P 8 port N .,'�0 • 0 ".: .d, `:J'.{ Fde4rea the End a' Each t�laraL free Bottom,PT Trendl i 510 349 � , To 8e d ' ''� PAULA JGY JOHNSON ' � To Friths? Grade. cop she x • a'L'ri; i5 t�is Jo iGst�ft" A r p W S e f 4 G Des 1 g I Installed o, ,R �Or. Woe wail Quoit-Cc Toe, (360) 898-7 g 3 I Length Length Orifice # Distance from Distance from Lateral# (In.) (Ft.) Spacing Orifices Feeder Line (In.) Cleanout(In.) 1 540 45 60 9 30 30 2 540 45 60 9 30 30 3 540 45 60 9 30 30 Total Lateral Length 135 Total#Orifices 27 GPM = 15.93 Dynamic Head Calculations Selected residual pressure: 2 ft. Length (Ft.) #Orifices Transport Pipe 260 27 1.26 ft. Feeder Total Lateral Line Length Lateral#1 45 2 47 9 0.21 ft. Lateral#2 45 7 52 9 0.24 ft. Lateral#3 45 12 57 9 0.26 ft. Total Elevation Lift 12.00 ft. Total Dynamic Head 15.96 ft. ig:-5. 47.- ...4, "VI w4,,ct*, I 4-4 70 PAULAJOUYJ4OHNSON (t slcc\--\E:L3Rsesx.owirN5Fs..Fs so PPROVE MAY 1 1 2023 MASON COUNTY ENVIRONMENTAL HEALTH JBW 137,, 139, 1 151, l Flow-Mate - Dose-Mate or ee1 Qc In high head dewatering or effluent I� This is our fastest growing line of effluent applications where pumping pumps.The150seriesistrulyaworkhorse -I performance is critical, this robust • 11 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 f 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 I— the hermetically sealed,oil-filled motor and Z non-clogging vortex impeller add up to a W 4 1 1 1.....,,...... long-lasting,trouble-free product. it _.... 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For more information,see Technical Data Sheets FM2782,FM2783. s )�(Rokti�EN'T L HEALTH t2 PUMP PERFORM i PUMP PERFORMANCE CURVE v LL MODEL 1 /152/1 3 MODEL 137/140/145 50 • ,,, ,........■ - 14 45 153 m a ,......... .,........ 12- 40 ', m .'......■. ccg11 35 �° .. x ,,....... = 10- 152 •, a ,'......... ,1, 1 8- 25 151 . ...... ' ..... s y . ■M■.■■ 4- 5 .'aCD \ '■.,... i 10 ...■'!"... 2- 5 ' .° .....11\e.. 1 ° , .....11.E01. a . { p .■...®...® 10 20 30 40 50 60 70 80 90 100 GALLONS ° s x a v m c °> m IX LfTERS 0 40 80 120 160 200 240 280 320 360 CALMS «s° m w° :.6t030,66-w 152658 FLOW PER MINUTE 814588 8 ©All rights reserved. ZOELLER PUMP CO. I 502-778-2731 1800-928-7867 I zoellerpumps.com LID WITS GAS TIT SEAL, r \ . ---t- Cr- 7";_fj__ • TO PUMP ---------frrPrrrT!"---1ACCESS 15:SER \ 1+ 1. E f E� I i # t SOURCE so } {FROM SEWAGEi Li FLOATING MAT 1 ,t• ,�� { • APPROVED f _ z "" _ � � FIVER _ , � I ii : ' � � � ' I � OVEA , NjCct4I'CtOm.a_n � MAY 1 1 2023 SEP=TAWfrvincan '".ACON COUNTY ENVIRONMENTAL HEALTH JBW SECURED LID yam GAS T sEAL rTHREADED WCON ° . ACCESS RISER ''Na iDIAMETER MACE PPON E r : ). VALVE s ? I r -->TO DRAMA • F SEPTIC • i TANK EF i iMGM WATER ALARM t.EHE3. t`- A t .4 . f 1 Tt. � s STEN SAL TIMBi OFF ave. f T I_ FLOAT FOR FLOAT^' MOUNTING CHBK VALVE I H OBPUMP Y •i VALVEV`-' v V""`. ?O"' s j 1' j C =. CENTRIFUGAL (TYPICAL)1 ��cz,c�` ( =AS NEEDED FIGURE 2 j **Nate: Septic Tanks must meet�*��aras required I,y 1�IAC;.hapter 2�c-27�C. and manufacturer must be on the Dept of Health list of registered sewage tanks." . PC! eof9 n Gnu Septic Doi� •ash • h LNSTALLATION & MALNTENAN CE r ,-`34 c ^ Pressure Distribution Systemsp� PAULA JOY JOHNSON J tic OMON Et 1. Install Laterals with contour of the ground. 2. Install trench bottoms level. 3. Install locator tape or rebar at each end of all dra n.eld 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. 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 pimp 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 pump chamber pumped or inspected every 3 to 5 years. • 17.No vehicular tra-nc over drauafield 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 drainfield must have a 1/8"hole drilled in the discharge pipe above the pump to prevent siphoni 23. All transport lines under driveways or parking areas must be encased to prevent crushing. 24. Homeowner is responsible for all property lines. APPROVER MAY 1 1 2023 D 6-6MASON COUNTY ENVIRONMENTAL HEALTH JBW