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HomeMy WebLinkAboutSWG2025-00157 - SWG Application / Design - 4/29/2025 MASON COUNTY 415 N 6TH STREET,SHELTON,WA 98584 SHELTON:360-427-9670,EXT 400 J L 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: SWG2025-00157 t wY APPLICANT FROST BEARD KAREN J Phone: Address: 1410 PAWPRINT CT COLORADO SPRINGS, CO 80921 OWNER FROST BEARD KAREN J Phone: Address: 1410 PAWPRINT CT COLORADO SPRINGS, CO 80921 SEPTIC DESIGNER PAULA JOHNSON* Phone: 360-898-2255 Address: 171 E VUECREST DRIVE UNION,WA 98592 Site Address: 35 W FROSTY LN NORTH Primary Parcel Number: 519014400068 Permit Description: Conforming Repair 2bd pressure bed Permit Submitted Date: 04/29/2025 Permit Issued Date: 05/06/2025 Issued By: Rhonda Thompson Current Permit Fees Paid: $825.00 (additional fees may be required upon installation of system). Permit Expiration Date: 05/01/2026 (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 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. r OFFICIAL USE ONL Y MASON COUNTY DATE RECEIVED: q /ICI q C > elia:: AMOUNT RECEIVED: / ,L�( (�RECENED BBY: co CA - _ Public Health & Human Services ' ))) o rn Environmental HealthShelton, 360-427-9670,ext.400 or 360 275-i4b7,ext.400 ��� /) /f ©� cn p 415 N.6th Street-Shelton,WA 98584 ' ,0 !A. 77 Zo) Z ON-SITE SEWAGE SYSTEM APPLICATION D > rn rn n rn APPLICANT PHONE r Karen Frost-Beard (719)209-6517 z MAILING ADDRESS-STREET,CITY.STATE.ZIP CODE E 1410 Pawprint Ct Colorado Springs CO 80921 co SITE ADDRESS-STREET.CITY ZIP CODE 35 W Frosty Ln N Shelton WA 98584 10" NAME OF DESIGNER PHONE Arrow Septic Designs, Inc (360) 898-2255 NAME OF INSTALLER PHONE C I Maples Excavating (360)463-8474 < I o PERMIT TYPE(Select one) DRINKING VVATER SOURCE filp RESIDENTIAL OSS itiCOMMUNITY OSS FI COMMERCIAL OSS 6 PRIVATE INDIVIDUAL WELL I] PRIVATE TWO-PARTY WELL Z I —1 TYPE OF WORK(select ones PUBLIC WATER SYSTEM 1 h_NEW CONSTRUCTION IUPGRADES EREPAIR!REPLACEMENT OTHER DETAILS seIect all that apply) 0 TABLE XREPAR 14" SUB ❑ SURFACING SEWAGE SA EXISTING FAILURE 0 SHORELINE IpMITTALS�IDESIGN FORM(REQUIRED) iii7SEPTIC DESIGN(REQUIRED) BEDROOMS I LOT SIZE WAS LOT CREATED AFTER 411,2025/ O WAIVER(S)(IF APPLICABLE) 2 BR i .28 ac ❑ YES ❑� NO I O DIRECTIONS TO SITE AND SITE CONDITIONS (e• locked Dare. Head east on W Alder St toward N 6th St and take the 1st exit at the traffic circle. Slight (R) I o onto S 1st St. Turn (R) onto W Lost Lake Rd. Turn (L) onto W Frosty Ln. Turn (R) at the T. 15 I o Destination on (L). Blue-ish gray house on lake with wood sign: "The Frost's" Ics) SITE MUST BE FLAGGED FROM MAIN ROAD AND TEST HOLES MUST BE FLAGGED WITH TEST HOLE NUMBERS. I OFFICIAL USE ONLY BELOW THIS LINE - UPGRADE!FAILURE SOURCE(for repornng purposes) ❑VOLUNTARY ❑MAINTENANCE/PUMPING ❑BUILDING PERMIT ❑HOME SALE ❑COMPLAINT ❑OTHER: INSPECTOR SOIL LOGS 1 COMMENTS/CONDITIONS .--N1 - , \ Wt. MtGas -Tii z 1-47, : o 1(6 Ntki Lj94 1o (\A 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 APPLICATION APPROVED:ISSUED BY DATE Rinont\ oi 91)/( s-i) /ittc, , 12_1,,,,,,ficor THIS FORM MAY BE SiANNED AND AVAILABLE FOR PUBLIC VIEW ON THE MASON COUNTY WEBSITE Revised:4/14/2025 - t ' DESIGN FORM—PAGE ONE Assessor's Parcel Number: 5 1 9 0 1 — 4 4 — 0 0 0 6 8 A design will be reviewed when 3 copies of each of the following are submitted: Completed eo design form that h s been s items checklist. '1 Cross-sect dated. s'Scaled ion t sketch.including all applicable items on checklist. ut sketch,including all applicable items on checklist. �Scaled plot plan,including all applicable tee Web site. .19nximi;m paper size: �/' -�� This form may be scanned and available for public view on the Mason County PARCEL'IDENTIFICATION 2025 00157 Designer's Name: _Arrow Septic Designs, Inc Permit Number: S��'G _..._— — (360)898-2255 Karen Beard Frost Designer's Phone Number: Applicant's Name: ____ _ ----- -- 171 E Vuecrest Dr — —_ 1410 Pawprmt Ct Designer's Address: Mailing Address: —_-___ ---_-------------— Union, WA 98592 Colorado Springs CO 80921 City State Zip City State Zip Designer's Email paulaj@hctc.com DESIGN PARAMETERS Treatment Device ❑Glendon 0 Sand Filter 0 Mound 0 Sand Lined Drainfield 0 Recirculating Filter 0 tat.; U Other Treatment Level(check all that apply): ❑ A 0 B 0 C 0 BLI 0 BL2 0 BI..3 )CF f7 N Drainfield Type ❑Sub Surface Drip ❑Gravity �Pressure 0 Trench ['Bed Septic Tank/Drainfield Specifications Laterals40 2 Schedule/Class Number of Bedrooms Length 30 ft Daily Flow:Operating Capacity 180 gpd1.25 in Daily Flow: Design Flow 240 gpd Diameter Number 4 Septic Tank Capacity(working) 1,000 gal 2.5 ftReceiving Soil Type(1-6) 3 Separation Receiving Soil Appl.Rate 0.8 gpd:ft2 • Orifices24 Required Primary Area 300 112 Total Number of Orifices Designed Primary Area 300 ft` Diameter 3/16 in Designed Reserve Area 300 ft'- ' Spacing 60 in Trench/Bed Width 10 ft Manifold Trench/Bed Length 30 , ft Schedule/Class 40 Elevation Measurements Length 7.5 ft Original Drainfield Area Slope 1 % Diameter 1.25 in New Slope,If Altered 1 n% Preferred manifold configuration used? gfYes 0 No Depth of Excavation Up-slope 17 in Transport Pipe from Original Grade D,H.n-siope 16 in Schedule/Class 40 Designed Vertical Separation 24+ in Length 140 ft Gravel-based Drainfield Required? 0 Yes te No Diameter 2 i n Pump Required? g Yes Cl No Dosing and Pump Chamber Pump/Siphon Specifications Number of doses!day 4 Diff. in Elevation Between Pump& (Jppermost Orifice 15 ft Dose quantity 60 g:,I Drainfield Squirt Height?Selected Residual(head) 2 ft Chamber Capacity(flood) 1,000 gal Pump controls:Please check those required. Uppermost Orifice�Higher 0 Lower than Pump Shutoff � Timer ❑ Elapse Meter ❑ Event Counter Capacity la Total Pressure Head 14.16 gpm 2 minutes �punt off 6 hours Calculated Total Pressure Head 17.83 ft If Timer: Pump on p Comments APPROVED MAY 0 6 2025 Revised: ,Ia;,o,; t. o v 8 MASON COUNTY ENVIRONMENTAL HEALTH RET 11 DESIGN FORM-PAGE TWO Assessor's Parcel Number: 5 1 9 0 1 - 4 4 -- 0 0 0 6 8 Permit Number: SWG 2025-00157 DESIGN CHECKLISTS Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch 0 Test hole locations g Drainfield orientation and layout Reference depth from original grade: EA Soil logs stf Trench/bed dimensions and g Septic tank Property lines critical distances within layout g Drainfield cover ' ❑ Existing and proposed wells ❑ D-Box'Valve box locations Reference depth from original grade within 100 ft of property G71 Septic tank/pump chamber and restrictive strata: ❑ Measurements to cuts. banks.and locations Cd Laterals, trenchibed,top and surface water and critical areas litd Observation port location bottom ❑ Location and orientation of Gg Clean-out location 0 Curtain drain collector curtain drain and all absorption Elf Manifold placement ❑ Sand augmentation • components g Orifice placement Other cross-section detail: Pi Location and dimension of g Observation orts/clean-outs •• primary system and reserve area g Lateral placement with distance P to edge of bed Other Information 6E1 Buildings g Audible/visual alarm referenced Yes No FLi Direction of slope indicator g Scale of drawing shown on scale g d 0 Design staked out ❑ Waterlines bar Cd 0 Recorded Notices attached Roads,easements.driveways, p Elevation benchmark and relative ❑ lif Waiver(s)attached • parking g 0 Pump curve attached elevations of system components } p 6� North arrow and scale drawing C� ❑ Evaluation of failure shown on scale bar Non-residential justification ❑ .Waste strength ❑ g Flow gNA4 , OVAL The undersigned designer must be notified , ' iia o;h tallation Ef Yes 0 No . • PAULA 'Q V 5- S-ZS Signat s - UESfaiEil'• Date aes ;, -'c TY, .b 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: <avl Ibi7rs" Environmental Health pecialist Date CAUTION: DESIGN APPROVAL IS VALID ONLY UNDER THE FOLLOWING CONDITION: ✓ The design is stamped "Approved" by Mason County Public Health. S7 I 1Z.L. ✓ The Onsite Sewage Permit has not expired,the Permit Expiration Date is: V 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:4/14/1015 Arrow Septic Designs 171 E.Vuecrest Dr. Union,WA 98592 May 5,2025 (revised) Mason County Department of Health Services 415 N 6th St Shelton,WA 98584 RE: Karen Frost Beard(Parcel#51901-44-00068) Evaluation of Failure Dear Inspector: Attached is a replacement septic design for a property located at 35 W Frosty Ln N, Shelton,WA 98584. There is an existing 2-bedroom home built in 1969 tha Concrete ses into a�tcfty tank followed by a d-box and a 10' xtic system of the same era. e existing system has a 1,000 gallon single-compartmentP 40' gravity loop drainfield. The septic system was recently oot uinfiltrpted,and there the tank was a h drha field uent level and the drainfield was not accepting water. Also,there is uent ter. This upgrade will require a new 1,000 gall n 1,000-gmum allon lump chamber. Or if the installetic tank with r can remove the The septic tank will be followed by a new g P root infiltration and bring the existing single-compartment septic tank up to standards, it could be used as a pump chamber. If not used,the old tank is to be decommissioned or removed. The new drainfield consists of 300+ 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.issues ls is a and we havedesignated a full reserve drainfield rming repair with 24"+of vertical pareaa.tio�e There are no surface water or well setback old drainfield is to be abandoned in place. The tanks and drainfield are on the adjacent t parcel he deed to90 th0069 so a e easemenRestrictive Covenant for On-Site Sewage System document is being filed onrecord t. The property owner's contact information is as follows: Karen Frost Beard 1410 Pawprint Ct Colorado Springs,CO 80921 (719)209-6517 If you need further information,please contact my office at(360) 898-2255. Sincerely. ft � '� ` � APPROVED hi ' •,. Q;� ! , 0 6 l�j ,:,.: (� rr. MASON COUNTY MAY ENYIRONMENTAI2025 HEALTH Ai%. 5100349 .��}. Yo 1It . h>t QN :-. RET 1- r Treatment System Designer c _ EXOiR£s a »�� 5--5- 1-3-- 2 ovS St ..., �o .1.-t' ton ,f' 3D f -.. :: ft. \ 6---'1 ----- pL o- sk \.PcRT: f oST-3E 5�qo�-44-o 0(0 5‘Ao\-4h-Oto(cq l- . b S �I F�iOS" _ 1 S i-TotNI k), A)a85 0 C4_ — a� E)0 5'r it 1 Cr 10 `J 4 be Ab s A=-7e5- \COL. 2 �2 2 Dec i ko w"-Q- k- 0 -ZakCvLSt r0OTS12-1- 42f} �t .R`f ,L f ( v �Y ����� s o tw o-r9 �M� . VOC. .E. yr Ho-Tr tk 2- 0-Z--I'f 6 L 5 -k- izoo`f; 2'1'481 -1(71-5 Zyb' ( \ / - Reo-t5) SoM,r c7BGK�:5 TA o, xev: Audio-Visual Alarm \ \0r0' ri-1,0 $3'`' 0 Cleanout \ '11.- 7- 0S EQ d F '; \ . 33 1000Gallon Septic Tank 2-Compartment with Effluent Filter a 4.2 01,000 Gallon Pump Chamber ` - \I C1>f`AA- 1 44:2ve-g- ,- \ate y ,..04 r' � ' --_____A . , ‘-' ' uNU -) 7 v`-, \ 3�1 �s°rS�raEtsT •/15k rally ��� b 4' \./N`1 ti -. . q°ff �C' PAJLA JOY JOHNS4N .� � APPROVED exP(is 4„'' MAY 0 6 2025 . MASON COUNTY ENVIRONMENTAL HEALTH 3 g RET . • ''\Y1. ,.sa('1� t ts " - 3°4 Ye'p,h C\ 7r ' Z. 1 • ro= \Ck. 0 S /o ' IIIIIIIIIIIIIIIIIIIIIIIggill" • -5 , 14/.41, • 3 T P i c-0,1 / ``., ��``yQ PAULA JOYO ON ;•4:': ci J ;�csLRst MiDESIGNER*. 1 \1P\Co.\ ExPt ,M (, :cr ,j— O servo"\\0��or S-S-L$ ., A /ca G 2 rt� L��t n� �i j�-er�abri So,ndy 1e)0.M COve-Yifat t.6 rc�\ � " �-. s 11 3e�� itt,e5=� _� t., lZccK 1(ot t� 30" 4114 3�-i-) li rA.. i • T LP`-1 '‘<2. • MAY 0 6 2025 SC/s\ V`— MASON COUNTY ENVIRONMENTAL HEALTH c j. Z' 8' 4' ,s----SCREW ON CAP RET Pra•,r-C--,0k Cross-.Sf.G`t.ot1 \fie,..1 . Note (Typical Bed Layout) 4 5 DEGREE ELBOW OR p=Obsesvatioo Poet—to be 4"perforated . LATERAL,SWEEP Z NG 9 0 • PVC pipe from bettom•e bed to MOM . grade.Are movable cap shall be installed on • END• OF port pipe,. GIvc-roc bottom D1 so pipe c car�-'t be rera • DETAIL • Man=�in system,one is each comer. CLEAN OUT Laterals are to be centered in Machos. NOTE► CLEANOUT TO BE FROM 0 TO 6 ' INCHES BELOW FINISHED EAR. CLEAN OUT RADE. MARK ENDS WITH REQUIRED AT END OF EACH LATERAL. 4 ©f F� Length Length Orifice # Distance from Distance from Lateral# (In.) (Ft.) Spacing Orifices Feeder 3 Line(In.) Cleanout(In.) 1 360 30 60 6 30 30 2 360 30 60 6 30 6 30 30 60 3 360 30 4 360 30 60 6 30 30 (Total Lateral Length 120 24 I GPM = 14.16 Total#Orifices Dynamic Head Calculations 2 ft. Selected residual pressure: Length (Ft.) #Orifices 24 0.54 ft. Transport Pipe 140 Feeder Total Lateral Line Length 0.07 ft Lateral#1 30 4 34 6 Lateral#2 30 2 32 6 0.07 ft. 32 6 0.07 ft. Lateral#3 30 2 0.07 ft. Lateral#4 30 4 34 6 15.00 ft. Total Elevation Lift A. 17.83 ft. Total Dynamic Head �% al* 14' il`.�, ,v i ,,, ./1 57GU�g9 :„'.V' T7Q'. ,PAULA JOY JOHNSON . EXPIRES us/1 S-.--ZS II APPROVED MAY 0 6 2025 MASON COUNTY ENVIRONMENTAL HEALTL RET 5of6 �� : Bronze construction available(139 series) J a�+,,irj • 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 � PUMP vERroRr+rwcECURVE performance is critical, this robust �- MODEL'.37n6a'1a5 family of pumps is known for reliability, n ' .■■■■■■■�■ durability and performance. These i ,■■■■■■.■. pumps are especially suited for harsh & ■,■■■:..■a N environments.Zoetler's cool run design ■IN■■ ■■ and corrosion-resistant,powder coated ■■„■�� gi epoxy finish add up to a long-lasting, d . ,"■�■.■. trouble-free product. a F 'II���������� 'I1 rn APPLICATIONS: u ■■��■■■■■ C.,• STEP or onsite applications y< ■■■.,■■■� M • Water '■.■",■■aa • Lighhtt commercial dewatering SPECIFICATIONS: 6--i''' 4 :::::'; :: amommuom. • 1-1/2" discharge 0 • 1/2 HP through 1 HP MADE IN THE USA ■■■■■„■' ■ Ali A IIAJOM 0E II NEN? ' .■�■®��® • Available in automatic or nonautomatic • Model 137,139,140:1/2"(12 mm)spherical solids R w n = t' n '� xws capacity with vortex impeller o ,, o • Model imp ller(19 mm)sph erical solids capacity with �• a '1 5=s=° vortex impeller ' ! 1r 1 V 2 ' --- N, i PUMP PERFORMANCE CURVE - . • -`;ENT i - MODEL 151/152/153 Dose—Mate • . 5oI . 1a— 153 This is our fastest growing line of effluent . -f pumps.The 150 series is truly a workhorse 12_ 40 i designed for reliability under extreme conditions in an effluent environment. - o 70_ 35 152 150 series pump curves cover a wide range - u of applications. They are well suited to i 30 I pplications with low pressure pipe(LPP) i s1 9� 25 owdercoap , Dr o the hermetically sealed, oil-filled motor t5 and non-clogging vortex impeller add up to 4 10I a long-tasting,trouble-free product. z_' APPLICATIONS: � o Ilr • STEP or onsite applications MADE ININNTTHHE USA 10 20 30 40 50 60 70 80 90 100 USIDAMa Marl DI GALLONS • Light commercial dewater ng LITERS a ao 'so 1zo +eo♦ zoo zeo zoo 320 360 SPECIFICATIONS: /� ^ pry y pl� o=5c8 • 1-1/2"NPT discharge 4s?_ ? 1[•1 (\f� `V) • 3/10 HP through 1/2 HP MAY 0 2�25 • Available in nonautomatic or with a variable level piggyback mechanical switch MASON COUNTY E'�VIRONMENTAL NEALTF. • 1/2"(12 mm)spherical solids capacity with vortex thermoplastic impeller L I RET For more information,see Technical Data Sheet FM2784. 9©All rights reserved. ZOELLER PUMP CO. 1502-778-2731 1800-928-7867 I zoellerpumps.com bomb t . 1 1 . I gg,-, -,;r; • .F.,• 50.25.,,,. ....t..._... -,7 "T. ---k..- . . i ; 246 DIAKETM -, 1 ' , .-... s amok •-_____, :.,..-- .1 Mggg i li4.R. -----=------1-------- ---------- ---------- 1 1 --------=--------- -"--- ------.-=---------------.. I 1 i --- ---------"--2=----------------- -----------.__-------- ------- . , . L. ,----------- --- , - ,--..... ..=--1.1.••- riza:r7......i.„„__-------7"=•: : , I I SEWAGE , . salsa:1 e_ero c9eaLzv\. •1'1, , F..W.;-.E..z E?-4.AT 11 ii '"•-• „ 1 ..; 1 : • • , . , :...... , 4.--tzzE. 1 .:•.• . 1 • - , i i i I . . . . : : 3 ; . . • . i 11....................=.....,=== =L===.....................:=4 staWROVIM i..... T 1 el:1 vni isi r r mg= ici . i i = ,=.,........--..... MASON COU i 1 L—"----- ------= P P 7400062 Rs MNTYAYE oy AL HEALT:' Vo 2E 5,1 ET D 1 SJI......" 1 • . ... 7:-• A.1Z%'--=:i i..-. *.i.'..i . : / .2.4 DgAil ‘s\NN. i i . I .: Mini 1 1 1 -;-.7 21.,,•i '-sP-;T.._____—_ ;t I1 i FROM STEPr'...‘` rle...<7 •-•, -; . - --:—=>7.70 WASPIFICELD I i i ,-: k.--- • 1::11.N,1 :IVArIBMVE* 1 i t HUM%YAM ALARM 1.EY --.-±-'s; 1 Noma TIMM OFF iZVEL i i WO ' 'G"• 01,,,W1 - <*----,,-_ % i MIDE7ENDIENT !f ------4- i F-42JLT STEK -. ••-•-% ;, i MR MCAT manerats i f I i • 2 / I L e-G13 C99Af5&f\ naVENT Mgefr'i z -: ....: :• - ."- ,,. , _.-,--• i: -=--4 I ItS. , :01..IFT-s-- ! i 1 1 i.2..._ 1 . ‘ II . , w si 14 II it g s I a mig -; 01710FUGAL '‘../1•2•(\.7vv\A"-JA", _ i PIMP p_l_ Sill&fiegina. i ! - .. 4.•-) 1 1 ' I • w N. 24-5.-272C *16"ftwzritg, i 1 • z ' 1 A.0 ChB r.ri-e.7 FrisuRE 2 *N';':•c•: Sept-c Tanks must!nee:.—..- . . — . . : 1 i tist cl-reg:.s.tred sew-r-...ge tanks_-t- • I I t 1 of- ci.it Septic Deis igto, Sac. INSTALLATION & MAINTENANCE Pressure Distribution Systems- Bed 1 5100349 JOY JOHNSON.; efjfAULA 1. Install Laterals with contour of the ground. rnd s� 'btSIGA1gt4 2. Install bed bottom level. 3. Install locator tape or rebar at each end of all drainfield laterals. s- 4. Install observation ports as indicated on the plot plan. Minimum of 2 required in each bed 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 check valve in pump outlet line to prevent system from draining back into the pump chamber. 10. 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. 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. 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. 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 years minimum. 16.No vehicular traffic over drainfield area or tanks. 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 design 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 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. 22. Homeowner is responsible for all property lines and easements. APPROVED MAY 0 6 2025 B of 8 MASON COUNTY ENVIRONMENTAL HEALTH RET