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HomeMy WebLinkAboutSWG2022-00598 - SWG Application / Design - 12/2/2022 C,.C. MASON COUNTY 415 N 6TH STREET,SHELTON, ,WA 98584 err SHELTON:360-427-9670, EXT 400 BELFAIR:360-275-4467,EXT 400 0 Public Health & Human Services ELMA: 360-482-5269,EXT400 FAX:360-427-7787 On-Site Sewage System Permit: SWG2022-00598 APPLICANT SKOKOMISH VALLEY FARMS Phone: Address: 10 N SWEETGRASS LN SHELTON, WA 98584 OWNER COURTNIER PHILLIP E & MONICA D Phone: Address: 2587 MEADOW LANE CAMERON PARK, CA 95682 SEPTIC DESIGNER PAULA JOHNSON -Arrow Septic Phone: 360-898-2255 Designs Inc. Address: 171 E VUECREST DRIVE UNION, WA 98592 SEPTIC INSTALLER JOHN GILLILAND-ARROW Phone: 360-898-4388 EXCAVATING Address: 1510 E MCREAVY RD UNION, WA 98592 Site Address: 10 N SWEETGRASS LN Primary Parcel Number: 421074400010 Permit Description: Commercial processing facility-employee restrooms only 240GPD Permit Submitted Date: 12/02/2022 Permit Issued Date: 03/03/2023 Issued By: Rhonda Thompson Current Permit Fees Paid: $500.00 (additional fees may be required upon installation of system). Permit Expiration Date: 12/16/2025 (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. 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 - DATE RECEIVED: MASON COUNTY C c F' COMMUNITY SERVICES AMOUNTRECEIV �� I REC NEDSY: , \ o cn " - Public Health(Community Health/Environmental Health) `•�jl}��\ 1 /�(1\-) C N }66-ai7-96�J,ert.400 or 36PZ71-aa67.cr 600 SWG +,I�� - O�G�v\ N O .. 415 N.6th Street-Shehm.WA 99::84 _T/VJ (l./1 O 7:. Z CD ON-SITE SEWAGE SYSTEM APPLICATION > , n m PHONE r APR_CAN- Skokomish Valley Farms LB Kregenow (206)450-8108 z MAILING ADDRESS-STREET,CITY STATE.ZIP CODE WA 98584 E 10 N Sweetgrass Ln Shelton SITEADDRESS-STREET CITY.ZIP CODE Shelton WA 98584 I • 500 N Sweetgrass Ln NAME OF DESIGNER PHONE I N Arrow Septic Designs (360)898-2255 NAME OF INSTALLER PHONE 0 Arrow Excavating (360)898-4388 R I o PERMITRM' TYPE(select ore) DRINKING WATER SOURCE 5 P.RESIDENTIAL OSS ECOMMUNITY OSS In COMMERCIAL OSS E PRIVATE INDIVIDUAL WELL b-PRIVATE TWO-PARTY WELL Z I Q PUBLIC WATER SYSTEM t TYPE OF WORK(select one) g.NEW CONSTRUCTION/UPGRADES 5-REPAIR/REPLACEMENT OTHER DETAILS(select all thatappIy) 0 TABLE IX REPAIR 0 SURFACING SEWAGE 0 EXISTING FAILURE 0 SHORELINE co SUBMITTALS O I FDESIGN FORM(REQUIRED) Ian SEPTIC DESIGN(REQUIRED) BEDROOMS �R equivalent LOT SIZE 40.71 acres O i WAIVER(S)(IF APPLICABLE) 2 DIRECTIONS TO SITE AND SITE CONDITIONS:(ex locked gate) Call ahead to meet LB Kregenow. Take N US Highway 101 (US-101 N) toward Port I o Angeles. Turn left onto N Sunnyside Rd. Drive to the gate at Skokomish Farms then follow o I o LB to the drainfield site. i ..),...._, 2 I r � SITE MUST BE FLAGGED FROM MAIN ROAD AND TEST HOLES MUST BE FLAGGED WITH TEST HOLE NUMBERS. .. OFFICIAL USE ONLY BELOW THIS LINE a i(--) UPGRADE!FAILURE SOURCE(for reporting piirposes) C l I ❑VOLUNTARY 0 MAINTENANCEIPUMPING 0 BUILDING PERMIT 0 HOME SALE ❑COMPLAINT 0 OTHER: `3 COMMENTS!CONDITIONS CD •,i INSPECTOR SOIL LOGS N !V I1 '.ck.\\°e(Y70 5tk C L Oam-f-Tes-cl k., , q2\0" ,i1- cool 0 RECORD DRAWING AND INSTALLATION REPORT SOIL CODES: REQUIRED FOR FINAL APPROVAL. V=VERY G=GRAVELLY S=SAND L=LOAM Si=SILT C=CLAY E=EXTREMELYR=ROOTS INSPECTOR SIGNATURE DATE APPLICATION EXPIRATION DATE APPLICATION APPROVED ISSUED BY DATE eaVi\AXIO .'12 -1(4- kt? i i 0 IZc 61\01A,10`6V11 (lVt (77 THIS FORM MAY Bt SCANNED AND AVAILABLE FOR PUBLIC VIEW ON THE MASON COUNTY WEBSITE nEV;SED 127,2015 DESIGN FORM—PAGE ONE Assessor's Parcel Number: 4 2 1 0 7 — 4 4 — 0 0 0 1 0 A design will be reviewed when 3 copies of each of the following are submitted: Completed design form that h s been s ed a on checklist. Cross-section sketch.including all applicable items on checklist. ut sketch,includine all applicable items on checklist �Scaled plot plan.including all applicable items This form may be scanned and available for public view on the Mason County Web site.Maximum paper size: 11 .1 PAI�I: CATION Op Designs,Inc Permit Number:' _SWG 5 L Arrow Septic Designer's Name: (360)898-2255 Septic Applicant's Name: Skokomish Valley Farms Designers Phone?�umber: —_ 171 E Vuecrest Dr Mailing Address: 10 N Sweetgrass Ln Designer's Address: WA 98592 WA 98584 Union SheltonState Zip City Cit}• State Zip _ . DESIGN P 1l TERS Treatment Device ❑Glendon Biofilter 0 Sand Filter 0 Mound 0 Sand Lined Drainfield 0 Recirculating Filter.T}pe: ❑Aerobic Unit Make/Model 0 Disinfection Unit Make/Model Other:___________-- Drainfield Type ❑Sub Surface Drip Pressure Ct�Trench 0 Bed ❑Gravity Septic Tank/Drainfield Specifications Laterals40 Number of Bedrooms 2BR equiv. Schedule/Class Daily Flow:Operating Capacity 180 gpd Length 50 ft gpd Diameter 1.25 in 240 Daily Flow:Design Flow gal Number 4 Septic Tank Capacity(working) 1,000 Receiving Soil Type(1-6) 5 Separation 9 ft Receiving Soil Appl. Rate 0.4 gpd/ft Orifices Required Primary Area 600 ft2 Total Number of Orifices 40 Designed Primary Area 600 ft2 Diameter 3/16 in Designed Reserve Area 600 ft2 Spacing 60 in Trench/Bed Width 3 ft Manifold Trench/Bed Length 200 ft Schedule/Class 40 W ' c Elevation Measurements Length header .c Original Drainfield Area Slope 0 4'o Diameter 1.25 in m 0 % Preferred manifold configuration used? ft�Yes 0 '. New Slope.If Altered O lr� Depth of Excavation up-slope 24 in Transport Pipe from Original Grade D �; �, c�wn_slop' 24 in Schedule/Class 40 Q Designed Vertical Separation 36 in Length 250 ft IV Gravelless Chambers Required? 0 Yes RI No 0 Optional Diameter 2 i Pump Required? le Yes 0 No Dosing and Pump Chamber Pump/Siphon Specifications Number of doses/day 4 Dill:in Elevation Between Pump& Uppermost Orifice 10 ft Dose quantity 60 gat Drainfield Squirt Height Selected Residual(head) 2 ft Chamber Capacity(flood) 1,000 gal Pump controls: Please check those required. Uppermost Orifice Elf Higher 0 Lower than Pump ShutoffTimer Gi!'Elapse Meter �Event Counter •Capacity @ Total Pressure Head 23.60 gpm6 hours Calculated Total Pressure Head 15.94 ft If Timer: Pump on 2 minutes ,Pump off Comments i (51-6V DESIGN FORM—PAGE TWO Assessor's Parcel Number:4 2 1 0 7 — 4 4 -- 0 0 0 1 0 • Permit Number: SWG DESIGN CHECKLISTS Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch El Test hole locations 6d Drainfield orientation and layout Reference depth from original grade: g Soil logs Eg Trench/bed dimensions and el Septic tank 66 Property lines critical distances within layout 6 ' Drainfield cover g 6/i Existing and proposed wells D-Box/Valve box locations Reference depth from original wade within 100 ft of property VI Septic tank/pump chamber and restrictive strata: ❑ Measurements to cuts.banks.and locations l' Laterals,trench/bed,top and surface water and critical areas 6t!! Observation port location bottom ❑ Location and orientation of g 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 gObservation ports/clean-outs primary system and reserve area el Lateral placement with distance to edge of bed Other Information ig Buildings , I". lif Audible:vtsu. i.rm referenced Yes No g Direction of slope indicator d I d 0 Design staked out• Se g Scale of dra,.rtg :f�. on scaleg ❑ Waterlines bar s> . • lt� 0 Recorded Notices attached g Roads,easements.driveways, t- /� 0 g Waiver(s)attached parking � .oi ""•a'.. GI 0 Pump curve attached 6e1 North arrow and scale drawing 6 �� j .1 �'•.cP,c.1. 0 tI Evaluation of failure shown on scale bar } • : 51`3.9 Non-residential justification '" . PAULA JOY JOHNSON..' ❑ Waste strength LiCE'>tiS� bLSi NEE;:- E� 0 Flow rxnco �n Tie - DESIGN APPROVAL The undersigned designer must be •fled b •inst ler at time of installation g Yes 0 No \\I:, 1zk-zz 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: kr/A kq(ZZ Environmental Health Spe ialist 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: 121 k-61(Z1 ✓ 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: 12/7/20l 5 Arrow Septic Designs, Inc. 171 E. Vuecrest Dr. Union, WA 98592 December 1, 2022 Mason County Department of Health Services 415 N 6th St Shelton, WA 98584 RE: Skokomish Valley Farms— Restrooms for Processing Building, Parcel#42107-44-00010 Dear Inspector: Skokomish Valley Farms plans to build a poultry processing building in the near future at their property located at 10 N Sweetgrass Ln., Shelton, WA. They plan to install a septic system that will just accommodate septic flow from the employee restrooms in the building. Processing water and floor drains will go into a separate fertilization/irrigation system. The number of employees is anticipated to average 3 people or less. Using 13 GPD flow average from the EPA Onsite Wastewater Treatment Systems Manual Table 3-4 typical wastewater flow rates from commercial sources for Industrial building employee and/or Office employee, calculated flows would average approximately 39 gallons per day. Based on the Mason County minimum septic sizing of a 2- bedroom equivalent, we will use 240 GPD average Daily Design Flow. The proposed septic components will consist of a 1,000 gallon 2-compartment septic tank with effluent filter, a 1,000 gallon pump chamber and 600 s.f. of shallow pressure trench drainfield. A timer, elapse time meter and event counter are required to ensure proper drainfield dosing and to accommodate future operation and maintenance. Waste strength is anticipated to be similar to residential usage with the main anticipated activities being employee restroom use, hand washing, etc. No chemicals or industrial products are to be put down the drains or into the septic system. Waste strength is expected to be similar to residential so an explosion proof pump is not required. The drainfield is located on a different parcel than the building so a"Restrictive Covenant for On-Site Sewage System" is getting notarized and filed on the deed, granting this permission. A copy will be provided after recording with the Auditor's office. If you need further information, please contact my office at(360) 898-2255. Sincerely .17Z,t . � APPROVE D D Paula pson 42 lieeroseciDOmitesalN2lt ater Treatment System Designer DEC 19 2022 I �tt� 't� si�Nr=a' CiJui)IY nVIRGNMENTAL HEALTH • EXPIRES 6 /1 b-24f5e w \\\\\\.\ .\, ,.:,, Ii+K.F 7 tii. \N . . , 0 <4, ,7,. .\ \ ID \cn IDN O \ '3 c N m o O i ro m n 3 co fD r} o+ N `G o c. r+ D N u, O I r L 0 m N 0 ''73 ;":. .1f(t It • D a N x R `AC, 1 'wr' '. — N • Plo-t Nil SkoKomish Val1-ry PGrviS PAfctll42107-` -000 0 + 1'a('CPI402107-1111-000 Jo 500 N SWtt-t-grass- Ln potiru! -#`7- 107- 1-i3- a00l0 Soft: in: ( c ' ° 30 G0 90 Ito L=-Test Rolf 0 o Y 85+1, h o J-e ' (0'-- ' S'° Sand S i tt !cam, � ( �► P� t\o H20. �� ( ) 3'xo' prr _ dret6n fist d - ehCVS c' 9 � 0.C. with reserve `-) ih 1) efiween / APPROVED DEC 19 2022 MASON COUNTY ENVIRONMENTAL HEALTH RET 1 •1 -cts. i 1 Parcely2l07- � y-000to d , i® s Key: D .a Q�- O Audio-Visual Alarm 0 Cleanout t O1Q00 Gallon Septic Tank 2-Compartment with Effluent Filter PCOQoSfd �N O4 1000 Gallon Pump Chamber 20 x2' j r. ,r A45 ( Valve Control Box (jr0(essin .19 4v4 sx., b S ., 0. ice'. 513i;34 .(� PAULA JOY JOHNSON . /1 30€ 8 f 1 s _............................., 56. ''''''''''''... ..."-*".. ...."....."'."..".."....4111PPI in....... 1 3. v k---- 'i`rs�P°raas h . 25 FMyrLIM& --,---1,0 5 „ ; --- o' er Pal Sz. ,may Detailed Drainfield Layout oa. O �',v�'� god' t \ORA �. to al Mar Rim G,rad� ystei Lass • �4- gm •2 r 12C L SKI ' CLI) 50' 1.25. Sched. 40 _cterC#S rf� Orifices @ E0' O.C. / 18 Q� a° f C e Per ateral. 1st & Last Or flee L 36 '' • 30- from End of Trench. ' 36't • Dranfield Cross—Section View Ow t � - we 'To sods ��, Lot�oot APPROVED O - • DAS - Om oat • i . DEC 19 2022 Pl.o °"' �; � J. `''t •Z, >vo�. "a.a So is ova O so a acr. :.iw. MASON COUNTY E4VIRONVESTAL HEALT - . **-..2, ' , oral.. > ..e. gib a..>. Oaf 1^�: ._�t d ct ai. �,d er Lobed• ��� ��' StG0349 '�� %"��' PAULA JOY JOHNSON \I1, Cew�''` �r �*as Sifts of Tros:0 L'i��fJS�b�t7'ESIGN�f("YY�--�,, To Se C� gpy 9e EXPIRES /16? Design S l ToOS. _ Arrow Septic, g n Istcims °" " To.. A - (360) 898-22 � *gat � 4 Tosd R�'0"d � Length Length Orifice # Distance from Distance from Lateral# (In.) (Ft.) Spacing Orifices Feeder Line (In.) Cleanout30 (In.) 1 600 50 60 10 30 2 600 50 60 10 30 3 600 50 60 10 30 30 4 600 50 60 10 30 30 Total Lateral Length 200 1 I GPM = 23.6 Total#Orifices 40 Dynamic Head Calculations Selected residual pressure: 2 ft. Length (Ft.) #Orifices Transport Pipe 250 40 2.50 ft. Feeder Total Lateral Line Length Lateral#1 50 2 52 10 0.29 ft. Lateral#2 50 11 61 10 0.34 ft. Lateral#3 50 20 70 10 0.38 ft. Lateral#4 50 29 79 10 0.43 ft. Total Elevation Lift 4 10.00 ft. Total Dynamic Head yfT 4 0 15.94 ft. f M ;4 t `y tS, t�R � i 510C349 1� ?,:' PAULA JOY JOHNSON '. EXPIRES 9 16F� APPROVED DEC 19 2022 MASON COUNTY EN'v1RONMENTAL HEALTH RET �(3/6-B • Osc. -E-v,vvv -AN7f-' y n. a ,, I ., .w r( 13?,; 1 .4 -----). 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APPLICATIONS: APPLICATIONS: 2. • STEP or onsite applications APPROVE • STEP or onsite applications P • Water transfer • Light commercial dewatering • Light commercial dewatering DEC 19 2022 SPECIFICATIONS: SPECIFIOANPT dscharge MASON COUNTY ENVIRONMENTAL H AtTI -1/2"NPT discharge 1 • 3/10 HP through 1/2 HP • 1/2 HP through 1 HP RET Available in nonautomatic or with a variable level I • 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 i • Model 145:3/4"(19 mm)spherical solids capacity with 9 For more information,see Technical Data Sheet FM2784. g vortex impeller Bronze construction available(139 series) 9 • High head version available(145 series) • Double shaft seal versions available for added protection on models 140/145. it For more information,see Technical Data Sheets FM2782,FM2783. : W i tr, PUMP PERFORM CURVE p P I#PPERFCRMANtECURVE MODEL 151 53 ( u00EL 137r 40n45 50 $ ., .�■■■■1■.■ 1 '4— 45 153 i I 10......... 1 w .'. . .... . . 12_ 40 1° 1 a IIIUMINIIIIIMMI_1 4 152 .■►�..■..■. '° „ p ,"....... { z 8- 151 .■,,'...... J 25 Y,:- ■..`...... ; 5- 20 $ -- IIM..I1\�■�. 1 C� 4— 15 .'''."... 4 10 ` ....►,'.'.. 2— 5 `- , �....1�►M.. MI....II.M M. t o — i 3 ■. . .®® . .I. 10 20 30 40 50 60 70 80 90 10D t u < a+ x x LITERS 0 40 80 120 160 20C 240 28�0 320 360 ba,oa • GALLONS `�to e m 'm ' 1- R.rp ISM, 152656 FLOW PER MINUTE 0'4508 lf1-tt 8 ©ALL rights reserved. ZOELLER PUMP CO. 1502-778-2731 1800-928-7867 I zoellerpumps.com • . . . . . ------------- ---- %CUM LID VIM elhE TEENT WI \ . • i 24'cumgra 1 1 4- ___ ZESER Ci 1 . -----, ---- 1 - ' gma ., -6.7.....1 I itn.b r 1521.: I i i .....: I 1 ti i i 7.7 .-•••"" "4 .."".'.'"4".. CRAMER . , t . 1 i ill t------7-----=11 :-..: , i 1 1 , 1 , , . 1 1 FROM 5gWASN - 1 i R.DArme ma 1 i sot= i } — i 1i 1 i i APPROVED . 1 i 1 ,-..J ! EFFLUENT . iIi 1 •••m; 2 $ 3 j i 1 . 1 i i, 1 ' i sactwarrs ! i 1 i t MASON 9RON2M132E2NTAL HEALTH pROVED as=TANK couNDiyECEN01 i - _ CTYPICAL1 I I RET 1 sficup.E2 i.,=1417014 GAS TIGHT SEAL , TRiEitou,zelizon I 1 ' 24'DIAMETER 1 =ACE I MUSK GRADE . • i ' g 1 ,p t Fitelif SEPTIC ----A!-; Zi _if . • I TANK . i.....j ," • ••_,;. rr,: - —>TO NIUMFRELD i i \ ii .'•- rtj . i . EMERGENCY STORAGE f II 3 i i t f il ' ANTI SIMON MI WATER ALARM LEVEL " it 7 ; ; VALVE* i 1 1 I + frO 1 I 1 I i 1 NORMAL 17/48i OFF LEVEL i ' WOODCZNE VOW:14E !I- .....r...,4, amenevaisn. -----......4.. .: j TT— FLOAT STEN 1 i 1 INCLOSED Poly • T ,: ,.., ' • f FOR HAAT Pietan73.6 .._ _• .,.-..^ !i I i I i . 'I 8""i = -.; 1 : =: I . sextmerrs ' ? --- . : :: i wines:sou • I i , • i CEPMEERIGILL •- I . MEIRStieddiSEIL Popo 1 f i . tTYPTCALI 1 I =AS NEEDED 1 I i **Note: Septic Tanks must meet st-znderris required by VqX ciLepter 246-272C 1.1 •- i and mart- ufact-..arer must be on the FIGURE 2 Dept of Heaith list of registered sewage rtics.** I , _ f I . . r -7 0 f '; • A - a Septa oir vs liaALLATIONAEs-TENA-7s-cv N.: • Pressure Distributof Systems 5100349 r}, PAULA JOY JOHNSCN • � 1, Instnell Laterals with contour of the grOUild. EXPtRES i15-/ 2. Install trench bottoms level. �rai 3. Instal?locator tape or rebar at each end of all .afield laterals. 4. Install observation ports as indicated on the plot plan. One required at distal end of each lateral in drainfieid with bottom extending to the dr nrock/native soil interface. Glue "T"to bottom so Observation Port cannot be easily removed rrom ground. Install removable cap on top of port at final grade level. 5. Install drainfield duringdry weather and soil conditions; any soil smearing must be eliminated by hand raing. 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 pump chamber to prevent the pump chamber from siphorins into the d*�i�field. 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 tench wall. 13. Encase all water tins within 10' of drainfield and under any driveway/parking areas. 14. Divert ail 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 ;rainfield and reserve area. 16. Have the septic tank and pump chamber pumped or inspected every 3 to 5 years. 17.No vehicular traffic over drain field area. 18. Inspect floats, cyan 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 Depa- ent will make this design null and void. 21. All m?nhole Lids and access, sampling or inspection ports must have locking covers and be located at ground level. 22. All pressure systems with a primp chamber outlet higher than the drainfield must have a 1/8"hole drilled in the discharge pipe above the pimp to prevent siphoninw. 23.All transport lines under driveways or parking areas must be encased to prevent crushing. 24. Homeowner is responsible for all property' lines. APPROVED 7 DEC 19 2022 CS� U MASON COUNTY ENVIRONMENTAL HEALTH �1 RET