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HomeMy WebLinkAboutSWG2022-00597 - SWG Application / Design - 12/2/2022 MASON COUNTY 415 N 6TH STREET,SHELTON,WA 98584 SHELTON:360-427-9670,EXT 400 Ms: BELFAIR:360-275-4467,EXT 400 7., Public Health & Human Services ELMA:360-482-5269,EXT 400 FAX:360-427-7787 On-Site Sewage System Permit: SWG2022-00597 APPLICANT ZOERHOFF TIM H Phone: Address: 360 N POTLATCH DR NORTH HOODSPORT, WA 98548 OWNER ZOERHOFF TIM H Phone: Address: 360 N POTLATCH DR NORTH HOODSPORT, WA 98548 SEPTIC DESIGNER PAULA JOHNSON -Arrow Septic Phone: 360-898-2255 Designs Inc. Address: 171 E VUECREST DRIVE UNION, WA 98592 SEPTIC INSTALLER Shane Maples-MAPLES EXCAVATING Phone: 360-463-8474 Address: 911 SE Arcadia Road SHELTON, WA 98584 Site Address: 360 N POTLATCH DR NORTH Primary Parcel Number: 423075000007 Permit Description: Repair non-compliant 2bd pressure trench Permit Submitted Date: 12/02/2022 Permit Issued Date: 01/06/2023 Issued By: Jeff Wilmoth Current Permit Fees Paid: $500.00 (additional fees may be required upon installation of system). Permit Expiration Date: 12/15/2025 (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. 7 Non compliant repair due to restrictive layer around 18-24"final inspection needed. 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. OFFICIAL USE ONLY MASON COUNTY DATE RECEIVED: I 1.I II. COMMUNITY SERVICES AMOUNTRECE RECENED BY: j� W C �V 00 Cl) _ v cn ` Public Health:Community Health.-EnYlronmental Health) 1/-� �_ CO 415 N.6th SU t'♦7eltonW60 ss.t:.ann.4W S . ,^ �,1 )jam 1 `r,C ct+- O 415 N.6th Stint-Shelton,WA sit, V'V/(v' U -C\)� ,v'V J l./Ifl u ,Z ON-SITE SEWAGE SYSTEM APPLICATION D D g xi m n APPLICANT PHONE m Tim Zoerhoff (360) 999-6047 r- c MAILING ADDRESS-STREET.CITY.STATE.ZIP CODE T 360 N Potlatch Dr N Hoodsport WA 98548 n CO SITE ADDRESS-STREET.CITY.ZIP CODE C same u 4, NAME OF DESIGNER PHONE ' IN) Arrow Septic Designs, Inc (360) 898-2255 n • NAME OF INSTALLER PHONE I W Maples Excavating (360) 463-8474 <_ ,, o PERMIT TYPE(select one) DRINKING WATER SOURCE O RM LYI RESIDENTIAL OSS ]COMMUNITY OSS COMMERCIAL OSS h PRIVATE INDIVIDUAL WELL l- PRIVATE TWO-PARTY WELL Z I " i TYPE OF WORK(select one) ®PUBLIC WATER SYSTEM r bi NEW CONSTRUCTION/UPGRADES ®REPAIR/REPLACEMENT OTHER DETAILS(select all that apply) ❑TABLE IX REPAIR N I Ul SUBMITTALS 0 SURFACING SEWAGE BI EXISTING FAILURE 0 SHORELINE COpp++ pp;DESIGN FORM(REQUIRED) SEPTIC DESIGN(REQUIRED) BEDROOMS LOT SIZE o bWAIVER(S),(IF. p_6`, LICABLE) 2 BR .51 acres 0 o DIRECTIONS TO SITE A•_, riTE CONDITIONS.(ex.locked gate) Go out Hwy 101 N to Hoodsport and turn (L) onto N Lake Cushman Rd. Turn left onto N I o Staircase Rd. Turn left onto N Mt Tebo Way. Turn (R) onto N Potlatch Dr. Destination on o I o (R). I 20 SITE MUST BE FLAGGED FROM MAIN ROAD AND TEST HOLES MUST BE FLAGGED WITH TEST HOLE NUMBERS. CO I OFFICIAL USE ONLY BELOW THIS LINE UPGRADE/FAILURE SOURCE(for reporting purposesi 0 VOLUNTARY 0 MAINTENANCE/PUMPING 0 BUILDING PERMIT CI HOME SALE OCOMPLAINT 0 OTHER: W �wC' INSPECTOR SOIL LOGS COMMENTS/CONDITIONS r- u u m FE ....siv. 0 ''(C6 j M 1 \L'(,) - (01/LC. - c—) IV 1 ((,la..G4- , GT CT— 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. INSPECTOR SIGNATURE DATE APPLICATION EXPIRATION DATE ATION APPROVED/ISSUED BY DATE kJAf5Th i21LLf hz ( Z I( 5/1 if 5 065 c ) 6 (--4.— 2•—) THIS FORM MAY BE CANNED AND AVAILABLE FOR PUBLIC VIEW ON THE MASON COUNTY WEBSITE REVISED 12/7/2015 0 , DESIGN FORM—PAGE ONE Assessor's Parcel Number: 4 2 3 0 7 — 5 0 — 0 0 0 0 7 A design will be reviewed when 3 conies of each of the following are submitted: '1 Completed design form that has been signed and dated. `'Scaled layout sketch,including all applicable items on checklist '1 Scaled plot plan, including all applicable items on checklist. '1 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. .t'Iaxinnun paper size: I 1-.V I PARCEL IDENTIFICATION Permit Number: SWG 2e - Dos Po Designer's Name: Arrow Septic Designs, Inc Tim Zoerhoff Designer's Phone Number: (360)898-2255 Applicant's Name: _____. b -------- Mailine.Address: 360 N Potlatch Dr N Designer's Address: 171 E Vuecrest Dr_ Hoodsport, WA 98548 Union, WA 98592 City State Zip City State Zip 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 MakeiModel Other:_ .__________ Drainfield Type ❑Gravity Fif Pressure Gir Trench 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 25 ft Daily Flow:Design Flow 240 gpd Diameter 1.25 in Septic Tank Capacity(working) Existing 1,000 gal Number 4 Receiving.Soil Type(1-6) 3 Separation 5 ft Receiving Soil Appl. Rate 0.8 gpd/ft` Orifices Required Primary Area 300 ft`' Total Number of Orifices 20 Designed Primary Area 300 ft` Diameter 3/16 in Designed Reserve Area 300 ft'- Spacing 60 in Trench/Bed Width 3 ft Manifold Trench/Bed Length 100 ft Schedule/Class 40 Elevation Measurements L t header ft Original Drainfield Area Slope 8 % 1 R c,:,., 1.25 in Nev Slope,If Altered 8 % Preferred mani old con bu .,io sed'? ti�Yes 0 No Depth of Excavation Up-slope 'P2 in JAN 0 6 2023 3�s •ort Pipe from Original Grade Down_slo MASO q ' 40 tk 'SL (p in � �►Y���NMENTAL HE/1LT!! Designed Vertical Separation t .. 'i'& in Length JBV/ 140 ft Gravelless Chambers Required? 0 Yes 0 No Cif Optional Diameter 2 in Pump Required? lig Yes 0 No Dosing and Pump Chamber Pump/Siphon Specifications Number of doses/day 4 DitT.in Elevation Between Pump& Uppermost Orifice 25 ft Dose quantity 60 gal Drainfield Squirt Height/Selected Residual(head) 2 ft Chamber Capacity(flood) New 1,000 gal Uppermost Orifice gi Higher 0 Lower than Pump Shutoff Pump controls: Please check those required. Capacity(a,Total Pressure Head 11.80 gpm gTimer fifElapse Meter V Event Counter Calculated Total Pressure Head 27.60 ft If Timer: Pump on 2 minutes ,Pump off 6 hours Comments Aico — CO/I'�p N1 NA' el 4i e— fr t o&-° DESIGN FORM—PAGE TWO Assessor's Parcel Number:4 2 3 0 7 — 5 0 -- 0 0 0 0 7 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: 0 Soil logs g Trench/bed dimensions and fits Septic tank Property lines critical distances within layout gDrainfield cover ❑ Existing and proposed wells g D-Box/Valve box locations P P Reference depth from original grade within 100 ft of property g Septic tank/pump chamber and restrictive strata: ❑ Measurements to cuts.banks.and locations g Laterals, trench/bed,top and surface water and critical areas g Observation port location bottom ❑ Location and orientation of Clean-out location 0 Curtain drain collector curtain drain and all absorption g Manifold placement 0 Sand augmentation components 171 Orifice placement Other cross-section detail: Qi Location and dimension of gLateral placement with distance g Observation ports/clean-outs primary system and reserve area to edge of bed 0 Buildings Other Information g Audible/visu..r la referenced Yes No g Direction of slope indicator g Scale of dr•ol' s •n on scale g 0 Design staked out g Waterlines bar ma's`.- •'•� ' 0 g Recorded Notices attached tid Roads, easements.driveways; f "d 4-':51'\• ❑ g Waiver(s)attached parking g.J;h I ' 0 Pump curve attached R1 North arrow and scale drawing " ` , ;`J l' ❑ Evaluation of failure ye,'. 5100349 Y) shown on scale bar JOY JOHNSON '?�'�l Non-residential justification etP.AUL.A cl•� 51=Ii�1: 't i� ft`s:ci ❑ Waste strength EXPRES �� ❑ g Flow DESIGN APPROVAL The undersigned designer must be note by installer t time of installation g 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 e regulation : 1 �-� 3 En ir► ttal Health Specialist Date I- -z CAUTION: DESIGN APPR VAL IS VALID ONLY UNDER THE FOLLOWING CONDITION: i ✓ The design is stamped "Approved"by Mason County Public Health. ✓ The Onsite Sewage Permit has not expired, the Permit Expiration Date is: I Ce d Ce ✓ 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: 1 2/7/2015 • Arrow Septic Designs 171 E. Vuecrest Dr. Union,WA 98592 November 30,2022 Mason County Department of Health Services 415N6thSt Shelton,WA 98584 RE: Tim Zoerhoff(Parcel#42307-50-00007)Evaluation of Failure Dear Inspector: Attached is a repair septic design for a property located at 360 N Potlatch Dr N, Hoodsport,WA 98548. There is an existing 1-bedroom cabin that ties into a gravity septic system installed in 1986. The existing system has a 1,000-gallon 2-compartment septic tank and the old drainfield is 132 s.f.. 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 clogged with roots and ponding. The existing 1,000-gallon 2-compartment septic tank may be kept/re-used and must be retrofitted 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 100 lineal feet of trenches,for a total of 300 s.f.. 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 18"+of vertical separation. There are no surface water or well setback issues and we have designated a full reserve drainfield area. This is a 2- bedroom septic,as it is the minimum sizing for Mason County. The property seller's contact information is as follows: Tim Zoerhoff 360 N Potlatch Dr N Hoodsport,WA 98548 (360)999-6047 If you need further information,please contact my office at(360)898-2255. Sincerely, .410 APPROVE : • JJ -- ' , ai JAN 0 6 2023 JOY Js •.4? 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Key: 1 CDAudio-Visual Alarm ALII- c-3 Cleanout I ; , Ex;s+i n9 tic Tank 1- I' 1 O3 1000 Gall enp aci rti'SerS+ y I -- Effluent Effluent Filter Vic S 10!e I ,Shed 04 1000 Gallon Pump Chamber OValve Control Box S{,pd 011 d rc i 6 d -i0 be �, a boyYloloN,d I Zti' T i O wa-Krl;he +0 be �� cx,Saihq � 2 do s SI-eCved i* enCavv14- rid Per\ r,q ; 3R cl w ii1i 1n 10` (g- an 5 J HOUSE' I D r i � .:P Q R ® V E fiDr;„,,,,a . . r JAN 0 6 21323 )re o N COUNTY ENVIRONMENTAL HEAL I , i ` .0 JE 1 _ _ _ , 8 , ►= : .pe r. ��'. 51U0345 eisi, I — — -- PAULA JOY JOHNSON '. h •ls0V.RtSV)G SfGN f� tit Wait J NV' ; l✓ + 'ice. • i'-io$ N Potla+C i, Or N • • .( ‘3‘ x.LStit-il*".42 , 0:.:. 2ll g - ii � ,• ' •, �— 3' . �— 0,, 30 r . . \ ,„ . . Q gun^^ Ai , ,...24.5-,740--veA • ,, i.tc"..iptuls-t % pVE • O J r h.•,:,, ePPR ._ . . JA N 0 6 .� MASON COUNTY ENVIRONM 2023ENTAL HEALTH • BIN Detailed Drainfield Layout Typical Observation Port . r�az Grode O. ta: zo' q'if o 12 Fifer Pobric • Gooey/{i II Oricixd Grade • " (y)• 25' 1 .25- Sched. 40 Laterals 2-4. to t2. zcterd K.ii (S) 3/ 16. Orifices @ 60- 0.C. Cr 6- Per Lateral. 1st & Last Orifice ` s — I 30- From End of Trench 3fi Jr „ // c7L It L2 Elbow Restrictive Layer End of - \�►l� petb� ci.an Cut Drainfield • Cross-Section View Not To Scab Note: Cteaiout to be from 0 to 6 i%Isa teb.% Fir iehod Groom mark ands +�+ Reber. Goon Cut Note 0 POr! Required ct the EnQ of t:.o� Lazard. To 'Be 4• PVC Pips from Betlom of Trench . To Frisked &ode. Removatie Cap shall be Septic Designs ?r,steded on Observation Port Pipe. anchor• Arrow On Setae OrTeQ - (360) 898•- 2255 A4iaus, of � Told i7eqired ;n System 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 ( f GPM = 11.8 Total#Orifices 20 Dynamic Head Calculations Selected residual pressure: 2 ft. Length (Ft.) #Orifices Transport Pipe 140 20 0.39 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 25.00 ft. Total Dynamic Head 27.60 ft. PROVE . .„; ,. MASON COUN EN ., V1 TY ' ROgr gr�1ENTA(HFALT J13 iy h . b.e 4Q! wAdy •� i'• �h� . faPS1C0349 •• �NLAULA JOY JOHNSON •"C,idoisrabESiolik- } D(FIREs s i �- IIIIIIIIIIIIIIIM 13Z Flow-Mate _ Dose-Mate In high head dewatering or effluent This is our fastest growing line of effluent applications where pumping pumps.The 150 series is truly a workhorse • performance is critical, this robust 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'scool 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 ',— the hermetically sealed,oil-filled motorand Z r non-clogging vortex impeller add up to a il long-lasting,trouble-free product.1.1 f L © I MADE I MADE INTHE USA W CS APPLICATIONS: APPLICATIONS: 2 • STEP or onsite applications • STEP or onsite applications N • Water transfer • Light commercial dewatering • Light commercial dewatering SPECIFICATIONS: SPECIFICATIONS: P p R o 1/ ' , 'T discharge HP • 1-1/2"NPT discharge 1)T tFlrough i/2 • 1/2 HP through 1 HP r. T t; va J'•lc in nonautomatic or with a variable level • Available in automatic or nonautomatic JAN 0 , pi 4,•ackmechanical switch • Model 137,139,140:1/2"(12 mm)sph t -1.-:.lids -• 1/2 m)spherical solids capacity with vortex capacity with vortex impeller T�{�e;r,moplastic impeller • Model 145:3/4"(19 mm)spherical solids'ta17 i 4xTY EUVIRCN )Ef� ,,t aJr ation,see Technical Data Sheet FM2784. vortex impeller J BW �`���� • 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. E w PUMP PERFORMANCE CURVE C i PUMP PERFORMANCE CURVE MODEL 151/152/153 MODEL 137t140f145 50 ,■..■■■■.■ 14 45 153 r e ,■.■.....■ a ■,.■...... 12- 40 " v .,........ 2 35 152 ' ■.,,....... = 10- +. ,'........ 3 N..,..ec, 8- 200 i 151 b ����...... , , .■■.,a,..■. 4 15 .'''■.,■■■ 10 \\\ Is IIIMIMMAINIIMM K ■....,1,`.. 2 ' , .....,1.',. .....®..E® 0 , GALLONS 10 20 30 40 50 63 70 80 90 100 LITERS I 1 1 1 I 1 I 1 f c..,ws 0 40 80 120 160 200 240 280 320 350 ,rats, V +s :c - 152655 FLOW PER MINUTE o14508 r.aw;P u44,1 8 ©All rights reserved. ZOELLER PUMP CO. 1502-778-2731 1800-928-7867 I zoellerpumps.com . . 1 i sePligiglis°waTs AS nag sEAL AN-a 24.Nowa ACCESS RISER \ .. -------. MUM GNAM • i i , i I i I t f • .===-- - -----------=--- ------ I ! " -.--=-------------. • ! i i 1 . ---------- ---------..--f---•---r'' r"----- 1 . . ' 1-1 ! • r-r- ?.• ' , , -.., i---71 — n , , _ TO PUMP s, —tat.----c-rr"-------77 • ,• ,__,--, i ----.- coma i MOM ffalig i 1 1 :, .42A,,, role MAT 1 I • 1 i i i • • 1 1 i 1 1 APOROVED . ; I , t 1 i i 1---J--17-- aFFLusr: i 1 ; 1 _ ; • ! • ....: it i i rxrea • DosAN--Net i i i .• 1 i =Dams 1 1 • i c 1 1 I 1 ' Gati.R5-,N. 1 110111111.11MIP I • 6 ... ,,, IREUGIMErmia JAN 0 6 1023 ' • .' ,,, - '.:.:'' • ‘ • ., . .. MASON COUNTY ENVIRONMENTAL HEALTH i sticuRED!- - 1*--...:-Tm. CAS TIGHT 57.A.i... J BINnaaEADEm Limon - 24' AMSTER t ACCESS RUM ', maw GRADE t 1 1 VALVE I r: 1 FROM wan= t--= t ' I TANIC 1...f, , ; , t •,.' •: --a --:TO DRAINFSELD 'I r. 't • ' --r-r- DINCIDCY STORAM i I i • : • € i 1 1 1 I ! ANTT SEPE101 .-- WitTEE ALARM LEVEL ' _...k t i i• : , VALVE* , i , NORMAL TIMIR OFF LIM : i WORKING VOLW4E i I sft - =DEPENDENT ; ----.---m+- i ! : FLOAT STEM I I ' ENCLOGED PUMP . t- -I I c i MR ROAT 1 i i MOUNIING Aye-ci1/43 1Imown snow a ----,c ,,, r1---t 1.--' i MEI=VALVE= • I 1 7.....• i 1 g-,,! r-;.-----=4. siecamacrs - -7=-:- ' SUBMIERSUCLE -.. GENTRIFUGAL '•"1/4-1\A-li\kk1N\ . PUMP • .MIEP-MIAERNES .1 . rTYPTS-AL3 I • x AS NEEDED Tanks rnu..• meet standards required by‘4, C.ch.epter 246-2.72C FiGuRE 2 and manufscr.-urer must'be on Vne Dept of'Heath list of regstered sewage re.•nks.** , . . 3 of ci • . . . a' w Septic Ovigivs �� . aAe r r L�iSTALLATIO� & NIAL�-TENANCE Arr Pressure Distributor Systems ; ; SiC0349 ) `� PAULA JOY JOHNSON.9 jy�h ground. `�a-�ES ` 1. Install Laterals with contour of the g_ ExwRF,3�3 - sib 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. 8. Install 1/8"mesh non-corrosive pump screen(thin. 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 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. 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 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 drainfield must have a • 1/8"hole drilled in the discharge pipe above the pump to prevent siphoning. 23. All transport lines under driveways or parking areas must be encased to prevent crushing. 24. Homeowner is responsible for all property lines. ROVED v JAN06 �2, CI o �- � 2L...3 MASON COUNTY ENVIRONMENTAL HEALTH JBW