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HomeMy WebLinkAboutSWG2023-00085 - SWG Application / Design - 3/13/2023 (2) 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: SWG2023-00085 APPLICANT ROBISON BOB & PATTY ANN ETAL Phone: Address: JOHN &TERESA GALLIGAN PORT ORCHARD, WA 98366 OWNER ROBISON BOB & PATTY ANN ETAL Phone: Address: JOHN & TERESA GALLIGAN PORT ORCHARD, WA 98366 SEPTIC DESIGNER ARROW LAND CLEARING & SEPTIC Phone: 1.360.898,4388 Address: P 0 BOX 94 UNION, WA 98592 Site Address: 2081 E Crestview Dr Primary Parcel Number: 320215803044 Permit Description: 3-bedroom pressure system repair Permit Submitted Date: 03/13/2023 Permit Issued Date: 03/15/2023 Issued By: David Anderson Current Permit Fees Paid: $525.00 (additional fees may be required upon installation of system). Permit Expiration Date: 03/15/2026 (based on date of inspection) Permit Conditions: 1 Proposed development subject to zoning requirements and approval by the planning department staff per Mason County Title 17. 2 Permit must be installed by a Mason County Certified Installer unless prior written authorization from Mason County is obtained. 3 Drainfield installation not to exceed designed upslope and downslope depth specified on design form. 4 Installer is responsible for obtaining Mason County installation approval prior to backfill of system components. 5 Installer is responsible for obtaining Septic Designer/Engineer installation approval prior to backfill of system components. 6 Mason County Asbuilt Form, Record Drawing, and Installation fee must be submitted for final installation approval. THIS PERMIT MUST BE ONSITE DURING INSTALLATION OF OSS. PROPERTY OWNERS ARE RESPONSIBLE FOR DETERMINING AND MARKING ALL PROPERTY LINE AND EASEMENT LOCATIONS. THIS PERMIT MAY BE REVOKED IF THE SITE CONDITIONS HAVE CHANGED SINCE THE SITE WAS INSPECTED AND DESIGN APPROVED. FINAL INSTALLATION APPROVAL IS REQUIRED PRIOR TO TEMPORARY OR FINAL OCCUPANCY OF ANY RELATED STRUCTURES. For Final Inspection visit: masoncountywa.gov/health/environmental/onsite/oss-inspection-request.php or call: 360-427-9670, extension 400. OFFICIAL ��77 LUSEONLY i 51 DATE RECEIVED: ' f' '...".•'-'. MASON COUNTY _eriii.°".I == COMMUNITY SERVICESAMOUNTREC J (RECEIVED BY: 0 rn - Public Health(Community Heanvironmental Health) /� //'� ('� 41$N.6th S0,tft t-GO0 or elton. A9E5867.etC 400 SWG -D �, / \/�8� O . 415 t16tlf$7M-Shelton.WA 9e5B< l 1\I` V z U) ON-SITE SEWAGE SYSTEM APPLICATION › 70 rn PHONE (p r APPl1CANT (360)509-6549 a Z Bob Robison . 3 MAILING ADDRESS-STREET,CITY,STATE,LP CODE P.O. Box 323 Port Orchard WA 98366 m 03 SITE ADDRESS-STREET,CITY.ZIP CODE (-1 � \�// I nI�� Shelton WA 98584 ? 1 �'' 2081 E Crestview Dr Q V LJ 1 m PHONE ID I N NAME OF DESIGNER Arrow Septic Designs -5 P', 3 -' J (360)898-2255 N CD a NAME OF INSTALLER Maples Excavating BY: (360)463-8474 F, iv PERMIT TYPE(select one) DRINKING WATER SOURCE 5 R RESIDENTIAL OSS 5COMMUNITY OSS FL COMMERCIAL OSS 5 PRIVATE INDIVIDUAL WELL S PRIVATE TWO-PARTY WELL Z I PUBLIC WATER SYSTEM TYPE OF WORK(select one: 1 �f 1 5 NEW CONSTRUCTION/UPGRADES LrI_REPAIR/REPLACEMENT OTHER DETAILS(select all that apply) 0 TABLE IX REPAIR .71 0 SURFACING SEWAGE t�EXISTING FAILURE 0 SHORELINE SUBMITTALS � COI�j Z LOT SIZE DESIGN FORM(REQUIRED) SEPTIC DESIGN(REQUIRED) BEDROOMS 3 BR .15 acres I o 0 ffWAIVER(S)(IF APPLICABLE) DIRECTIONS TO SITE AND SITE CONDITIONS (ea locked gate) W W Go out Hwy 3 and turn right onto E Agate Rd. Turn right onto E Crestview Dr. Destination on (L). Gray manufactured home with white trim. "2081" o 0 SITE MUST BE FLAGGED FROM MAIN ROAD AND TEST HOLES MUST BE FLAGGED WITH TEST HOLE NUMBERS. OFFICIAL USE ONLY BELOW THIS LINE UPGRADE/FAILURE SOURCE(for reporting purposes) 0 VOLUNTARY 0 MAINTENANCE/PUMPING 0 BUILDING PERMIT 0 HOME SALE ❑COMPLAINT ❑OTHER: COMMENTS f CONDITIONS INSPECTOR SOIL LOGS T Hi: 6-60 L m c THV= 0 -S( Lrn RECORD DRAWING AND INSTALLATION REPORT SOIL CODES: REQUIRED FOR FINAL APPROVAL V=VERY G=GRAVELLY S=SAND L=LOAM Si=SILT C=CLAY -c=EXTREMELY R=ROOTS DATE INSPECTOR SIGNATURE DATE APPLICATION EXPIRATION DATE APPLICATION APPROVED!'SSUED BY $//5 Zo2) ! 3//f/z026 THI FORM MAY BE SCANNED AND AVAILABLE FOR PUBLIC VIEW ON THE MASON COUNTY WEBSITE REVISED 12I72015 DESIGN FORM—PAGE ONE Assessor's Parcel Number: 3 2 0 2 1 — 5 8 — 0 3 0 4 4 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 ' blic view on the Mason County Web site.Maximum pacer size 11 V 1 _ r.-,_-e .„._..... 2?j• 0008S De i ff 11 • Arrow Septic Designs, Inc rPermit Number: SWG 4- i-, 11 i (360)898-2255 Applicant's Name: Bob Robison _ De ' ner's `hone u __ - Mailing Address: P.O.Box 323 D ,.ne1ARd4r s. d23 171 E Vuecrest Dr — � Port Orchard WA 98366 • Union WA 98592 City State Zip BY•----_ _ ""'`'' City State Zip '-'., `,. ag.; ,.M:!, _ ,... . , 1if.ESIGN:1 i ,Ar1F TEAS .." -. Treatment Device ❑Glendon Biofilter 0 Sand Filter 0 Mound 0 Sand Lined Drainfield 0 Recirculating Filter.Type: Cl Aerobic Unit Make!Model 0 Disinfection Unit Make/Model Other:__ Drainfield Type ❑Gravity IiIi Pressure 0 Trench C 'Bed 0 Sub Surface Drip Septic Tank/Drainfield Specifications Laterals Number of Bedrooms 3 Schedule/Class 40 Daily Flow:Operating Capacity 270 gpd Length 45 II Daily Flow:Design Flow 360 gpd Diameter 1.25 in Septic Tank Capacity(working) 1,200 gal Number 4 Receiving Soil Type(1-6) 3 Separation 2.5 ft Receiving Soil Appl.Rate 0.8 gpd/ft2 Orifices Required Primary Area 450 ft2 Total Number of Orifices 36 Designed Primary Area 450 ft2 Diameter 3/16 in Designed Reserve Area 450 ft2 Spacing 60 in Trench/Bed Width 10 ft Manifold Trench/Bed Length 45 ft Schedule/Class 40 Elevation Measurements Length 7.5 ft Original Drainfield Area Slope 1 % Diameter 1.25 in New Slope,If Altered 1 % Preferred manifold configuration used? Gif Yes 0 No Depth of Excavation' Up-slope 24 in Transport Pipe from Original Grade Down-slope 23 in Schedule/Class 40 Designed Vertical Separation 30+ in Length 25 ft Gravelless Chambers Required? ❑ Yes El.No 0 Optional Diameter 2 in Pump Required? le Yes 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 Elf Higher 0 Lower than Pump Shutoff Pump controls:Please check those required. Capacity @ Total Pressure Head 21.24 gpm Timer GiEvent Counter Calculated Total Pressure Head 8.07 ft If Timer: Pu ' likCi. � 6 hrs Comments MAR 1 5 2023 MASON COUNTY ENVIRONMENTAL HEALTH DJA l�g DESIGN FORM-PAGE TWO Assessor's Parcel Number:3 2 0 2 1 - 5 8 -- 0 3 0 4 4 Permit Number: SWG DESIGN CHECKLISTS Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch Et Test hole locations 6i Drainfield orientation and layout Reference depth from original grade: g Soil logs lid Trench/bed dimensions and i' Septic tank Property lines critical distances within layout (Q( 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 li?! Laterals, trench/bed,top and surface water and critical areas g 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 Lateral placement with distance l Observation ports/clean-outs primary system and reserve area to edge of be. Buildings g 1+ Other Information g Audible/vis .,• p i referenced Yes No ❑ Direction of slope indicatorliti .0;Scale of. y;..N•� �••. ;•n on scale d 0 Design staked out •.. ❑ Waterlines bar ..,., 0 g Recorded Notices attached lii Roads,easements.driveways, �; 4dere R`ON 0 g Waiver(s)attached parking -`i 1...• `!} l ' 0 Pump curve attached • "~' 'I 0 Evaluation of failure g North arrow and scale drawing , • s,00 09 l,'/• shown on scale bar PAULA JOY JOHNSON• ' Non-residential justification 1 ❑ Gd Waste strength 0 g Flow DESIGN APPROVAL The undersigned designer must 5tified by insta er at time of installation g Yes 0 No 3-13- 2-/ Signature of Designer Date Arye, -- - 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- ' ulati s: MAR 1 5 2023 �- / jOUNTY ENVIRONMENTAL HEAL i vi nniei tal Health Specialist ate DJA 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: ✓ 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 March 13,2023 Mason County Department of Health Services 415N6thSt Shelton,WA 98584 RE: Bob Robison(Parcel#32021-58-03044)Evaluation of Failure Dear Inspector: Attached is a repair septic design for a property located at 2081 E Crestview Dr, Shelton in the Shorecrest neighborhood.There is an existing 3-bedroom manufactured home that ties into a gravity septic system installed in 1967. The existing system has a 1,000-gallon single-compartment septic tank and the old drainfield is installed deep and made up of various materials. 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 clogged. The existing 1,000 gallon septic tank is over 50 years old,only single compartment,and installed too shallow to use as a pump chamber so it is to be decommissioned or removed. We are proposing a new 1,200 gallon 2-compartment septic tank with an effluent filter. It will be followed by a new 1,000-gallon pump chamber. The new drainfield consists of 450 s.f.of shallow pressure bed 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 surface water or well setback issues. The property owner's contact information is as follows: Bob Robison P.O. Box 323 Port Orchard,WA 98366 (360)509-6549 • If you need further information,please contact my office at(360)898-2255. Sincerely ..fro›;.•••..4k, �T. , APPROVED , . �1 . 516J349 MAR 1 5 2023 PAULA JOY JOHNSON.. • Lta148 .6 i01.04 MASON COUNTY ENVIRONMENTAL HEALTH " .s DJA Paula J.Johnson Licensed Onsite Wastewater Treatment System Designer V — E GRESV 1Ev\I 1)12\V t l to 2.0 30 �d w CP O. LOT-R-DsN 3 PACzc.sL 32021-S8^0344c4t `)_081 E G;.ESTvVw "PR. A . A NA\ 211 X4o ' Q -T Y Houz R * pkok. A-a`^-` .k-Q bz AQ(A 'SscovAe3 • v y ✓eVtAt €O1 £t -4 old 1)•F iv SOe tJ ` p -cl D T 0O o � a tot x45' P,,;,,,�v,� D. . . o�� t is. Beoa w't-}1/2.l 450 5t ---t `toy .01 L � 11� R fSec'Je. bed r— A. z5 ` I Kew I ro' lQS e.vo t —_ 3 5 I l 470 0 Audio-Visual Alarm 0 Cleanout 33 1200 Gallon Septic Tank 2-Compartment with Effluent Filter /-r o4:7" - 01000 Gallon Pump Chamber � ♦ i'StO�.J•49 •� f 1 Ya' „uLA .1, JCFINSO %%1.4) e • r tail:- Y PPRO►VEL.: oST W MAR 1 5 2023 MASON COUNTY ENVIRONMENTAL HEALT! DJA 36261 2" -rra�SPor .,_,,,, �S ,s �o _�(<---- ;c.., C �a,.,cry' co" o DRAINFIELD TOP VIEW 1 . 251' sched 40 laterals 10 x 45' pressure bed (9) 3/16" orifices 60" O. C. 30" from bed ends 5 ca-Q- _. ��\ = 1 or Or 5 r 10 ISr 2 or (4?: ..4.1%.)• — l;,{-t1) e 1 . .. ._ jt- L1Cu349,,), : .t. �is 0� PAULA JOY JOHNSON.y L'I'Ctt„S, D SidigA'' % SCREW ON CAP EXPIRES 8 1 / -- w 45 DEGREE ELBOW NOTE, LATERAL 0=OBSERVATION PORTS--TO BE 4" END OF � o�•�C•r PVC PIPE FROM BOTTOM OF TRENCH ,t TO FINISHED GRADE. REMOVABLE DITCH CAP SHALL BE INSTALLED ON 30 DETAIL _ OBSERVATION PORT PIPE. ANCHOR ON CLEAN OUT BOTTOM WITH GLUED ON TEE: CLEANOUT TO BE FROM 0 TC MINIMUM OF NOTE, IN SYSTEM. INCHES BELOW FINISHED GRADE . ( • APPROVE D C REQUIREDMARK ENDSATITH END OFAEACFiCI,?1TERA MAR 1 5 2023 MASON COUNTY ENVIRONMENTAL HEALTF' 0. e t Szt.--a_ci., It410,),-,re. RtLI C.0 v-4.,- , i_ rrt1 .., 3o• --:--A-".n e•-• 2 '� y ;L 10 241/ / / /1.L5 L.A1 r ,�.,HOC . J 11 ,14- pryrtoev k,, f< ,0' r • Sc -. . : 1"= 2 30+ r z • O I ' 21 3' `-+•, Rj �e L Co-act ';e t,.3 v� aka., 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 4 540 45 60 9 30 30 Total Lateral Length 180 Total#Orifices 36 GPM = 21.24 Dynamic Head Calculations Selected residual pressure: 2 ft. Length (Ft.) #Orifices Transport Pipe 25 36 0.21 ft. Feeder Total Lateral Line Length Lateral#1 45 4 49 9 0.22 ft. Lateral#2 45 2 47 9 0.21 ft. Lateral#3 45 2 47 9 0.21 ft. Lateral#4 45 4 49 9 0.22 ft. Total Elevation Lift 5.00 ft. Total Dynamic Head h 8.07 ft. 4,40? o 4 , . f . �, APPROVED —f, b1 G.'�,69 1 }"•'�. A J.?Y JOHNSON •k . L't�>1.4VEt3b�SIGiJP�.. MAR 1 5 7rYI Exi -°`'_ems fir; -- M SONC " , , • • r 137, 13 , 1A : :, �Jr 1i 1Jr" ,- } Flow-Mate Dose-Mate D�' p4,u'IG�s-1w.� 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 i 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 i 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. i powder coated epoxy finish,in addition to H 1 the hermetically sealed,oil-filled motor and Z non-clogging vortex impeller add up to a = W 6 , long-lasting,trouble-free product. �e ( IP.-- ......—/-:: 11.1 - J �J.. MADEINTIEUSA MADE USA o�oawama•am.mn W C1: APPLICATIONS: APPLICATIONS: G • STEP or onsite applications STEP or onsite applications N • Water transfer Light commercial dewaterin • Light commercial dewatering gAPPROVE 0 SPECIFICATIONS: SPECIFICATIONS: • 1-1/2"NPT discharge • 1-1/2"NPT discharge • 3/10 HP through 1/2 HP MAR 1 5 2023 • 1/2 HP through 1 HP • Available in nonautomati o,�r pwith a variable level • Available in automatic or nonautomatic piggyback mechanical swit GTOON COUNTY ENVIRONMENTAL HEALT) • Model 137,139,140:1/2"(12 mm)spherical solids • 1/2"(12 mm)spherical solids capacity with vitQ capacity with vortex impeller thermoplastic impeller J • 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. • PUMP PERFO: ••NCE CURVE d PUMP PERFORMA'CECURJE MODE 151/ 52/153 MODEL 1371 40/145 50 "- y '■■■■■■■■■ 14- 45 153 ■■■UI■■■■■■ •, ■,■■UI■■■UI■ 12— 40 ' ■N■■■■■■■■ i . 35 152 '-1 p ■■„■■■■■■■ U 10 i •. ENNUI■■■■■■ 5— 30 151 a ■�M1�■■■■■■ 25 .,_ s ■■■►■■■■■■ a 5- 20 ■■■■\■■■■■ • e- -. .■■■'1,■■■■ ,: 4— 15 ■�E�■ IN■■■ 10 r•1 ■■■�\����■■ 2— 5 lJ '- ' ■■■■■I1\M■■ ■■■■■„■' ■ ° 10 20 30 40 50 so 70 80 so Too ■■■■■N■■®■ GALLONS w x z w w o v w +z LriERS 0 40 80 120 160 200 240 280 320 360 cr,as .-ws. m ,p " ._ FLOW PER MINUTE a�asoe ROM Ra WU,� 152555 „e 8 ©ALL rights reserved. ZOELLER PUMP CO. 1502-778-2731 1800-928-7867 I zoellerpumps.com . . 1 • SECURED LID MITE GAS TIGHT SEAL I W MOWER 1 el AMESS RISER I r-- --------- FINISH GRADE \ - , I ,...-------- / ----_ - ii -•-- ------------____-. - • i I 7-7--- 4-177 i h---11--, *H-f-L-. TO PUMP --T---;i :._---- --trtrr.r= ,j_7—..:.--- CHANGER FROM SEWAGE 1 11 n i 1 SOURCE II 1 ii i FLoATING,UkT i 1 I : i i 1 1 L'J ; i ; I • 1 1 i I 1 I I ri--1-1-.-, APPROVED i....\ 1 i 1 \ :LUIC) &&•L' \ 1 I i FILTER . : 1 1 \\x:ky(K\A.A.)1/4..,1/4-,VA_ \__________7L.,,...1EDIMETS NJJ I Al • 0 e-'Lr`dtr\•9c3 1 - -rtV"-----------1 Ppic? : rg.TAff MAR 1520 . . (Tynan MASON uPI co,„, TY ENVIRotvmE DJ A NTAL HEA,, SECURED LID WITM GAS TIGirr stAt. L H TIRREADIED UPIZON 24°DIAMETER. . I ACMES RISER 1 i SENN= 1 MISR GRADE VALVE 8 • FROM sEPTIC , Fr;• '; i TANK --4-TO DRAINRELD \ F------? A 1 , 1 EmERGENCY sTORAGE i I • ! t t I !I 1 ANT/SIPHON MGM WATER ALARM LEVEL I I, N T . 1- 1 1 VALVE 2 1 NORMAL TIP=OFF LEM • i westram VOLUME i J - INDEPENDENT R.OAT SIM T , . , ENCLOSED PUMP - • 0 FOR FLOAT . I \. t 7:5e50 SkcL i SENT 1- E. ni 1 MOUNFING CHECK VALVE 2 I 1\1\-kAd\ ANA. 1 - SeDINENTS . EmTril7T summimmu • - i ' _ T . • 1 PUMP MEMP.-MAMBER l C9,,e-Ck.CANAly CI-MCAL-1 i 2 AS NEEDED '• ' I "Note: Septic Tanks must meet vandards required by WAC chapter 246-272C GURE and manufacturer must be on the Dept of Health list of registered sewage tanks.**FI 2 ' ) . [ P3 1 o f 8 Gnnucc, Septic Dotg d. '1 , �nh+ LNSTALLATi01� & L4ECTENAiVCE Pressure Distribution Systems -Bed -%' 5100349 �1f'� .17AULA JOY JOHNSON LfCgt8r. "0•_ 1. Install Laterals with contour of the Found. EXPIRES 1 / 2. Install bed bottom level. 3. Install locator tape or rebar at each end of all drainfield laterals. of 2 required.n each 4 Install observation ports as indicated on the plot plan. Minim' ttom so bed with bottom extending to the drainrock/native soild 1e In� Glue removable to c p boon top of Observation Port cannot be easily removed from g port at final grade level. soil smearing must be 5. Install drainfield during dry weather and soil conditions; any 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. Redundant off switch required. 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. back into the 9. Install check valve in pump outlet line to prevent system from draining pump chamber. 10. Tee to Tee construction between laterals anda t 2 _clo� do not glue), after pressure maniflo es Install laterals to the manifold wit_the o� 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. 11. 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. 12. Encase all water lines within 10' of drainfield and under any driveway/parking areas. 13. Divert all storm water runoff away from on-site sewage system. 14.No curtain drains allowed within 10' of the up-slope edge or 30' of the down-slope edge of the drainfield and reserve area_ 15. Have the septic tank and pump chamber pumped or inspected every 3 to 5 years. 16.No vehicular traffic over drainfield area. 17. Inspect floats, clean filters, and test high water level alarm every 6-12 months as needed. 18. All materials and workmanship must meet County and State regulations. 19.Deviation from this design without prior approval from the Designer and Mason County Environmental Health Department will make this desi;n null and void. 20. All manhole lids and access, sampling or inspection ports must have locking covers and be located at ground level. 21. All pressure systems with a pomp chamber outlet higher than the drainfeld must have a 1/8"hole drilled in the discharge pipe above the pomp to prevent siphoning. 22. All transport lines under driveways or parking areas must be encased to prevent crushing. 23. Homeowner is responsible for all property lines. z s; v MAR 1 b L023 MASON COUNTY ENVIRONMENTAL HEALTH � �8 DJA