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HomeMy WebLinkAboutSWG2025-00312 - SWG Application / Design - 8/24/2025 MASON COUNTY 415 N 6TH STREET,SHELTON,WA 98584 SHELTON: S 42 TON, ,EXT 400 584 a ,: 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: SWG2025-00312 APPLICANT JAMES BRYAN W Phone: 360-490-8484 Address: 5070 W SKOKOMISH VLY RD SHELTON, WA 98584 CONTACT INDIAN HEALTH SERVICES Phone: 360-732-1235 Address: 4060 WHEATON WAY SUITE E BREMERTON, WA 98310 OWNER APPLICANT Utter, Lesley Phone: 503-414-5521 Address: Portland Area IHS, 500 Pacific Ave, Suite 400 Bremerton, WA 98310 SEPTIC DESIGNER PAULA JOHNSON* Phone: 360-898-2255 Address: 171 E VUECREST DRIVE UNION, WA 98592 Site Address: 5070 W Skokomish Valley Rd Primary Parcel Number: 521123100210 Permit Description: Replace the existing 4-bedroom septic system Permit Submitted Date: 08/05/2025 Permit Issued Date: 11/03/2025 Issued By: Jeff Wilmoth Current Permit Fees Paid: $825.00 (additional fees may be required upon installation of system). Permit Expiration Date: 08/23/2026 (based on date of inspection) Permit Conditions: 1 Approval of this septic permit does not approve the building location. Building location is subject to approval from all applicable departments and regulations. 2 Proposed development subject to zoning requirements and approval by the planning department staff per Mason County Title 17. 3 Permit must be installed by a Mason County Certified Installer unless prior written authorization from Mason County is obtained. 4 Drain field installation not to exceed designed upslope and downslope depth specified on • design form. 5 Installer is responsible for obtaining Mason County installation approval prior to backfill of system components. 6 Installer is responsible for obtaining Septic Designer/Engineer installation approval prior to backfill of system components. 7 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. \i P,\.1� - ���"5 0\11.l N t 1��; `D i OFFICIAL USE ONLY M ' • U N TY DATE RECEIVED 6 ' N D �` JU( C U) As AMOUNT RECENF RECEIVED BY: CO Cl) —---- Public Health & Human Services / ' ��5 ° n Environmental Health 360-421-9670,ext.400 or 360-275.4467,ext.400 ��� no /��) - ^„ I fJ� Q 415 N.6th Street- Shelton,WA 98584 t,C/ ('j,[�'✓ W O '� Z U) ON-SITE SEWAGE SYSTEM APPLICATION m n m APPLICANT - I :^Y•- r Bryan James r .. , (360) 868-7414 z fl MAILING ADDRESS-STREET CITY.STATE Z'PCODE L:�'—' CO 5070 W Skokomish Valley Re f.�t o Shelton __ WA 9858473 S'TE ADDRESS-STREET.CIT'.ZIP CODE In I (J7 O same — N NAME OF DESIGNER �:..J = ki P-,GI. IArrow Septic Designs, Inc N� Q , (360) 898-2255 NAME OF INSTALLER :ii`` I PHONE 0 I PERMIT��77 TYPE(select one; DRINKING WATER SOURCE S P n �, Loon' A-'5 O 17Lt RESIDENTIAL OSS COMMUNITY OSS ECOMMERCIAL OSS 6 PRIVATE INDIVIDUAL WELL 5 PRIVATE TWO-PARTY'NEL_ Z I N rr PUBLIC WATER SYSTEM I TYPE OF WDRK Isek.ci ono 5 NEW CONSTRUCTION/UPGRADES Ln p REPAIR I REPLACEMENT OTHER DETAILS(see=fan that appiyi 0 TABLE X REPAIR CO ❑ SURFACING SEWAGE 66 EXISTING FAILURE 0 SHORELINE co SUBMITTALS r— —_%. r� Pr DESIGN FORM(REQUIRED) N"t SEPTIC DESIGN(REQUIRED) BEDROOMS LOT SIZE WAS LOT CREATED AFTER 41112025' 0 4 BR 2.18 ac ❑ YES p NO a 6WAIVER(S)(IF APPLICABLE) x cD DIRECTIONS TO SITE AND SITE CONDITIONS (ex hocked gate) Head W on W Alder St toward N 7th St. Turn (L) onto W Wallace Blvd/Wallace Kneeland o Blvd. Turn (R) onto the US-101 N ramp to Port Angeles. Turn (L) onto W Skokomish Valley r I tv Rd. Destination on (R). Turn onto "W River Bend Rd" access road in between 5010 & 5070. You can park at first turn-in on L and then walk farther back to test holes by parked boats. I SITE MUST BE FLAGGED FROM MAIN ROAD AND TEST HOLES MUST BE FLAGGED WITH TEST HOLE NUMBERS. 1 Q ------- -- ----- - OFFICIAL USE ONLY BELOW THIS LINE ---- -- - - -__-.---_- UPGRADE/FAILURE SOURCE(for reporting purposes) 0 VOLUNTARY 0 MAINTENANCE/PUMPING 0 BUILDING PERMIT 0 HOME SALE ❑COMPLAINT 0 OTHER. - INSPECTOR SOIL LOGS COMMENTS/CONDITIONS 0 ......— y ‘,...f. 4.....3 3 cr 3(Q LS V r' 2:7j �� t.4, w r i1,,�`-`i a 3 E6/e___S1:5 ,--to 51— i-tc-- , --,4� ± i.,LJ J DECO DRAVbtNG AND INSTALI.F.TION REPORT SOIL CODES: ✓ V=VERY G=GRAVELLY S=SAND L=LOAM Si=SILT C=CLAY E=EXTREMELY R=ROOTS REOUIRED FOR FINAL APPROVAL. ECTOR SIGNATURE DATE APPLICATION EXPIRATION DATE APP N APPROVED/ISSUED BY DATE �-3 1,2 `�S -2-.3 'a66 (t_325 THI F AY BE SCANNED AND AVAILABLE FOR PUBLIC VIEW ON THE MASON COUNTY WEBSITE L Revised.4/14/2025 DESIGN FORM—PAGE ONE Assessor's Parcel Number: 5 2 1 1 2 — 3 1 — 0 0 2 1 O. A design will be reviewed when 3 ei ies of each of the followScaleg are s layoutbesdetch, including all applicable items on checklist. �Completed design form that has been signed and dated. '1 Scaled plot plan. including all applicable items on checklist.eW on the Mason County Web'1 Cross-section sketch, lsitenMazimumc al items size:on X 1 checklist. This form may be scanned and available for public PARCEL IDENTIFICATION Designer's Name: Arrow Septic Designs Inc Permit Number: SWG 360 898-2255 Bryan James Designer's Phone Number: ( ) Applicant's Name: 171 E Vuecrest Dr __ 5070 W Skokomish Valley Dr Designer's Address: WA 98592 Mailing Address: Union, Shelton WA 98584 City State Zip Cit State Zi Designer's Email paulaj@hctc.com DESIGN PARAMETERS Treatment Device ❑ Glendon 0 Sand Filter 0 Mound 0 Sand Lined Drainfield 0 Recirculating Filter 0 ATU U Other Treatment Level(check all that apply): 0 A ❑B 0 C 0 BLI 0 BL2 ❑BL3 0 E 0 N Drainfield Type ❑ Sub Surface Drip ❑Gravity 6f Pressure Trench 0 Bed Laterals Septic Tank/Drainfield Specifications 40 4 Schedule/Class Number of Bedrooms Length 50 ft Daily Flow:Operating Capacity 360 gpd gpd Diameter 1.25 in Daily Flow:Design Flow 4804 Septic Tank Capacity(working) 1,200 gal Number Receiving Soil Type(1-6) 3 Separation 5 ft Orifices Receiving Soil Appl.Rate 0.8 gpd/ft2 40 Required Primary Area 600 ft2 Total Number of Orifices 600 ft2 Diameter 3/16 in Designed Primary Area 60 in Designed Reserve Area 600 ft2 Spacing Trench/Bed Width 3 ft Manifold 40 Trench/Bed Length 200 ft Schedule/Class Elevation Measurements Length header fi Original Drainfield Area Slope 2 % Diameter 1.25 in New Slope,If Altered 2 % Preferred manifold configuration used? RI Yes 0 No Depth of Excavation Up-slope `lin.,tl' �. . 12-' in Transport Pipe from Original Grade Down-slope1�`1 '"/` 12- in Schedule/Class 40 Designed Vertical Separation 24+ in Length 220 ft �j Gravel-based Drainfield Required'? CI Yes No Diameter 2 in Pump Required? Yes 0 No Dosing and Pump Chamber 4 Pump/Siphon Specifications Number of doses/day a Diff. in Elevation Between Pump&Uppermost Orifice 10 ft 120 gal Dose quantity 1.200 Pal O ft Chamber Capacity(flood) Drainfield Squirt Height/Selected Residual(head) check those required. gpm Uppermost OrificePump controls:Please che Higher 0 Lower than Pump Shutoffco Timer 0 ck[Apse Meter ❑v4:vent Counter Capacity @ Total Pressure Head 23.6 2 minutes Pump off 6 hours Calculated Total Pressure Head 15.51 ft If Timer: Pump on Comments AA:-/; -NUM, j `� j-ittV -, t /171 C Mi(J✓\ I(p Revised:4/14/2025 1etel DESIGN FORM—PAGE TWO Assessor's Parcel Number: 5 2 1 1 2 — 3 1 -- 0 0 2 1 0 Permit Number: SWG DESIGN CHECKLISTS Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch fifi Test hole locations [21 Drainfield orientation and layout Reference depth from original grade: lid RI Trench/bed dimensions and Q( Septic tank critical distances within layout Soil logs gi Drainfield cover 66 Property lines 6I D-Box/Valve box locations Reference depth from original grade w d within 100 ft of property and proposed wells IA Septic tank/pump chamber and restrictive strata: within d Measurements to cuts,banks,and locations f21 Laterals,trench bed,top and surface water and critical areas 12i Observation port location bottom ❑ Curtain drain collector 0 Location and orientation of Bl Clean-out location curtain drain and all absorption lid Manifold placement 0 Sand augmentation components f21 Orifice placement Other cross-section detail: lid Location and dimension of EZI Observation ports/clean-outs 56 Lateral placement with distance primary system and reserve area to edge of bed Other Information EZi Buildings Bi Audible/visual alarm referenced Yes No g Direction of slope indicator Ql Scale of drawing shown on scale El 0 Design staked out 0 I1 Recorded Notices attached 10 Waterlines bar 0 [�Waiver(s) attached lid Roads, easements. driveways, d Elevation benchmark and relative 0 Pump cur ae attached parking elevations of system components RI 0 Evaluation of failure 0 North arrow and scale drawing Non-residential justification shown on scale bar t-.• j 0 l 'Waste strength , ) 0 It Flow DE834R L The undersigned designer must be notified by i ; t ' Cration VI Yes 0 No . '' PAULA JOY Inut so, Signature E ;�; � bES1 �� Date �N G ` 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: Environmental 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: ✓ 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. Revised:4/14/2025 Arrow Septic Designs 171 E. Vuecrest Dr. Union, WA 98592 July 14, 2025 Mason County Department of Health Services 415 N 6th St Shelton,WA 98584 RE: Bryan James(Parcel#52112-31-00210) Evaluation of Failure Dear Inspector: Attached is a replacement septic design for a property located at 5070 W Skokomish Valley Rd, Shelton, WA 98584. There is an existing 4-bedroom home built in 1953 that ties into a gravity septic system of the same era. The existing system has a 1,000 gallon 2-compartment concrete septic tank followed by a d-box and a gravity drainfield of unknown size. The septic system has been pumped many times over the last few years, and there was a high effluent level and the drainfield was not accepting water. The owner has now been approved for funding through Indian Health Services and will move forward with the replacement septic system. This upgrade will require a new 1,200 gallon minimum 2-compartment septic tank with an effluent filter. The septic tank will be followed by a new 1,200-gallon pump chamber. The old tank is to be pumped out and decommissioned or removed and the old drainfield is to be abandoned. The new drainfield consists of 600 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 conforming repair with 24"+of vertical separation. There are no surface water or well setback issues and we have designated a full reserve drainfield area. The south fork of the Skokomish River is approximately 300 feet away from the proposed drainfield. The water supply for the house comes from a spring across the road, approximately 1,000 feet to the south. We are showing a future well location that would meet all septic setbacks for the owner's future reference. The property owner's contact information is as follows: Bryan James 5070 W Skokomish Valley Rd Shelton, WA 98584 (360) 868-7414 If you need further information, please contact my office at(360) 898-2255. Sincerely Jt Fit;v led, . .02.;;14.1 . lc ,t).. a.: Nk.,, . .., •,te,i.),, A)*e vP.Z latustabigitiqsWi ter Treatment System Designer tC S US - U a $ t J VY b 0 0- �N 1 = u VI g88 a 2 rr e Sow S 8 ;4 y�/•e3 Z ga til. a a 1 i 0 <F O8 (J 'eg d' 4 W W/ - m 7€-a i&R 3%.2 CO as w i h A ZyRS W az hi SSXO' z4 :T J o 1 tA:Nis,. lk, 8 t ;Tx0,131 (0)) C s J ==i a� I W ,-Is m m /i \ S 1 •-.0 < r o ta • o • . ■ I C rv_ o - E I1 a li R —_ _— ae's+n tit tt3 W_,Gzs 3..c zcm s __—_ _ ao'Mt -- - 3 C O Q N 0 r—y6wt: 1 I > . _ WAR �__ f I I W z - z a I 1 8 I 1 cc w 1— It B 1 8 F. 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' 0 t 1 Cf' 0 A.-adlo-V isu 1 Aicr - t j 3 Clea.ncut f,„r n 1200 Gallon Septic Tank •� A S f-7uen:Fflze- fr i0 17.00 C-lion Pump Chamber 9 kPl‘PO s'e_-(k".-riZN4A111\,. ; I ( .elJ O Valve Con`o Box ����B,_ S�l'e t 6 .5111 u� © Ut _ pLp Tflt3K C�o gE �} C3R { N RFPtoJFp ct2 DECCM— tiUUSF_ 1 Mk SS s(I E4;1) i t M H. � 0 -1, ,, ate, i Sot .�3.ab r{ 0 , i10-t'• I siooaes `•• / 40 � ;-'�'�' PAU(.A JOY JOHNSON�; , 1- � l'fC' S��UESiNSON. \oho �� D i C� ' ‘A,s _ ` -7 _ Z -F-2 5- L,g CcE.y re N.9- m 4-6-1 • s er6-4 ftC S/, (?c V r.Ah1i lS 1r Lojvcrel 3 kart :.:.--)v.At Fie-e.i-gf• xv_01*-ecite,L rr ' (oOrr e#n; f\$ d La:: ( " _ I 5c.o.AQ ; a a' s' Mr /5' 20) Opp Ni I NFL Ci 12;N OE D.R,r;vr.1AL G2�rE 1 —�2"NPr�Y� l, z (�ovkP-/Ftt1 +� e ,7-4 ~ 2 („� I-�Iv r'�' 51JJ349 12,-* r \ �^Q'� PAULALOY JOFINSOfV\1 _ �.�"�.� wit g�C I� SSt 1SSSIU' �`�� J, i_ilg EXP REs r� li K - 3�'r �I � - Z�—z..� �1 24`+ I. —Q s -SG K SCREW ON CAP 5 cs��, : 1"= i 1 • NOTE , err .l ' Mr" y 45\ EGREEELBWoR O=OBSERVATION PORTS--TO BE 4 " LATERALSWEEPING 9u PVC PIPE FROM BOTTOM OF TRENCH • TO FINISHED GRADE. REMOVABLE • END OF CAP SHALL BE INSTALLED ON DITCH DEL OBSERVATION PORT PIPE. GLUED ON CLEAN ILT TEE AT BOTTOM . 11 IN SYSTEM.MINIMUM OF ' T NOTE, CLEANOUT TO BE FROM 0 TO 6 MARK ENDS WITH REBAR. CLEAN OUT LATERALS ARE TO BE CENTERED INCHES BELOW FINISHED GRADE. IN TRENCHES REQUIRED AT END OF EACH LATERAL. 50 ' TRENCH END MANIFOLDORIFICES( 6000" ) ORIFICES L o" OC ( lp Se FROM MANIFOLD 3D"FROM ELBOW 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 30 30 30 3 600 50 60 10 30 30 4 600 50 60 10 Total Lateral Length 200 1 GPM = 23.6 Total#Orifices 40 Dynamic Head Calculations 2 ft. Selected residual pressure: Length (Ft.) #Orifices Transport Pipe 220 40 2.20 ft. Feeder Total Lateral Line Length Lateral#1 50 2 52 10 0.29 ft. Lateral#2 50 7 57 10 0.31 ft. Lateral#3 50 12 62 10 0.34 ft. Lateral#4 50 17 67 10 0.37 ft. Total Elevation Lift 10.00 ft. kr. Total Dynamic Head •4 15.51 ft. 0 �IvQj � i _ ' .I ilfriV J N �; 5107349 •'. '� Q,: PAULA JOY JOHNSON C it Ew+ries r; �- 1 — 24'—US-- 0 eff 1 • Bronze construction available(139 series) • '�� I ° ` • High head version available(145 series) • Double shaft seal versions available for added protection on models 140/145. Flow—Mate For more information,see Technical Data Sheets FM2782,FM2783. In high head dewatering or effluent applications where pumping _ - RAMP PERFORMANCE CURVE performance is critical, this robust _ NgDEFORMo,+s %family of pumps is known for reliability, , durability and performance. These r z NUMNI11111111111.111 especially suited for harsh ' ,��������� pumps are esp y � <.;., environments.Zoeller's cool run design 11,11111111111111111111 En and corrosion resistant powder coated 1 ' ��.�..���M _ epoxy finish add up to a long-lasting, „_ k ■■„■■.■■■■ 3 trouble free product. ,"�■■■■■■ m APPLICATIONS: ► - ��11►1�11�11n • STEP or onsite applications 1'!1 ■■■M■ m x• Water transfer "- 11.11111k1..111111111Z • Light commercial dewatering • ■■.■",■■■■ -i •'''••,■1 SPECIFICATIONS: ��gr x 1 o_ • 1 1/2"NPT discharge :■■■■ `.. • 1/2 HP through 1 HP MADE IN THE USA •" s .■■■■„■'a • Available in automatic or nonautomatic SIIoAIWORIr1OfILIMIif1T • Model 137,139,140:1/2"(12 mm)spherical solids , ■�■®•■� c a x x w K .. w K •z capacity with vortex impeller u.ws • Model 145:3/4"(19 mm)spherical solids capacity with LPJ°` ;` SC iT vortex impeller M 151, s PUMP PERFORMANCE CURVE �v1VfVZE1�1 C 1 MODEL151/152/153 Dose-Mate so This is our fastest growing line of effluent 14— 45 153 pumps.The 150 series is truly a workhorse designed for reliability under extreme 12- 40 conditions in an effluent environment. 150 series pump curves cover a wide range 70- 3. 152 of applications. They are well suited to 0 30 applications with low pressure pipe(LPP) > e_ ,s1 and enhanced flow STEP systems.Zoeller's o 2s cool run design and corrosion-resistant, o I powder coated epoxy finish, in addition s- 20 to the hermetically sealed, oil-filled motor 15 �( and non-clogging vortex impeller add up to 4- a long-lasting,trouble-free product. 10 'f 2 APPLICATIONS: 5 • STEP or onsite applications ""'���••• o MADE IN THE USA 10 20 30 40 50 60 70 80 90 100 • Light commercial dewatering MIS AIIA)OIIIIIIl OMNI GALLONS LITERS i IN) o eo ec , ,so goo Leo Sao r�o aso rLow PER MINUTE .. ow • 1-1/2"NPT discharge • 3/10 HP through 1/2 HP -` • Available in nonautomatic or with a variable level piggyback mechanical switch • 1/2"(12 mm)spherical solids capacity with vortex thermoplastic impeller For more information,see Technical Data Sheet FM2784. ©All rights reserved. ZOELLER PUMP CO. 1502-778-2731 1800-928-7867 I zoellerpumps.com 9 1 , . • . • Distantion Systans -Rsconnacncled Standards and aids= , MOM Dam 1,2007 • , SECURED 130 craw GAS TIGHT SEAL . . • , • I zr oimeTER - ACCESS RISER sommosiglime MUSK GitAD E • --±' /-1/-IF 2_ __- ----- -- •_ ,.-.-__-_-------------_ 7------------------------------------------ _ _ . ---- --- AIM* ID J. ---;-"Ti F. . .. .. ... IiN _ _. . ... comma / ._ ......_i AWN SEWAGE 1` ' . SOURCE FLOATING MAT t • 1 . 1....- - Li....... APPRoVED !EFFLUENT \ t el:erP C.9a-SZA . FILTER SELIMENTS ( 1•11-%\r`--- , i .._ '2,va_1--- --- swamis - =ma ,e,„.....f, 0,,......,_ 4..-- .. _ 6.-a-'- t.'c.""- '--‘- ' secuReD UD VIIM4 GM newr SEAL C.7,42•33-t-ek , TNREADED MON W DIAMETER ACCESS RISER ' FINISH GRADE r ' SERVICE ,‘t OM* :i i'irg t 711 - * . , Mit ow= TANK N ---. "'I " • — --o-TO ORAINFiELD i ri • f . I! EMERGE:44'Y STORAGE 1 • i HON SLATER AUIRIN LEVEL --P. i 1 • Nen SIMON VALVE' 1 i isaitam.TINIER OFF Lava. wanknia VOLUME I -1110Ireooh• —____.......1„ . 1 1 FLOATSTIIII FOR FLOAT ENcLOSED PUMP - MOUMMIOS \ t fbcr° Q31k-CL) SEOMNINT IMMO• — CHECK VALVE* • • atintareirra t r•--.i U1/.1/ •- SUIDINIMIUSUE CENTRIFiaaa. i RUMP ElIMPACHAMBER ITYPICAO AS NEMO Septic Tanks must meet standards required by WAC chapter 246-272C and manufacturer must be on Dept of Health list of registered sewage tanks. FIGURE 2 . ._ ___ . Paste 35 of 65 • 7 V•1 C6441 c Septic De/sign/ , ,7rzc. ,l •. t INSTALLATION & MAINTENANCE yr: ) , fir: • Pressure Distribution Systems '' 51.0049 _ is PAULA JOY JOHNSON.1P, 1. Install Laterals with contour of the ground. Dmis>«a ugialEa , 2. Install trench bottoms level. - - �L.S 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(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 and block under pump. 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. Waterlines must be a minimum of 10' to any tank or drainfield (a reduction to 5' may be obtained with a State waiver on lots that meet minimum lot size). Encase all water lines within 10' of septic transport lines 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 years minimum. 17. No vehicular traffic over drainfield area or tanks. 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 an anti-siphon valve or a 1/8"hole drilled in the discharge pipe above the pump to prevent siphoning. Ensure anti-siphon hole sprays down/away from tank opening. 23. All transport lines under driveways or parking areas must be encased to prevent crushing. 24. Homeowner is responsible for all property lines and easements.