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HomeMy WebLinkAboutSWG2023-00474 - SWG Application / Design - 11/3/2023 WA 584 MASON COUNTY 4,6N6SHELTON: SHELTON , EXT 400 SHELTON: ,SHE T967q EXT 400 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: SWG2023-00474 APPLICANT DAVIS THOMAS E & STEPHANIE RAE Phone: 971-570-6875 Address: 2634 NE ZANDER CT HILLSBORO, OR 97124 OWNER DAVIS THOMAS E & STEPHANIE RAE Phone: 971-570-6875 Address: 2634 NE ZANDER CT HILLSBORO, OR 97124 SEPTIC DESIGNER CINDY WAITE-Septic Designer Phone: 3607010205 Address: 80 E PICKERING LANE SHELTON, WA 98584 Site Address: 5100 SE Lynch Rd Primary Parcel Number 319010000010 Permit Description. 4-bedroom OSCAR X02 system w/OS-50 coils Permit Submitted Date: 11/03/2023 Permit Issued Date: 11/17/2023 Issued By: David Anderson Current Permit Fees Paid: $780.00 (additional ees may be required upon installation of smeml. Permit Expiration Date: 11/16/2026 (based an date of Inspection) Permit Conditions: 1 Proposed development subject to zoning requirements and approval by the planning department staff per Mason County Title 17. 2 Permit must be installed by a Mason County Certified Installer unless prior written authorization from Mason County is obtained. 3 Drainfield installation not to exceed designed ups/ope and downslope depth specified on design form. 4 Installer is responsible for obtaining Mason County installation approval prior to backfill of system components. 5 Installer is responsible for obtaining Septic Designer/Engineer installation approval prior to backfill of system components. 6 Mason County Asbuilt Form, Record Drawing, and Installation fee must be submitted for final installation approval THIS PERMIT MUST BE ONSITE DURING INSTALLATION OF OSS. PROPERTY OWNERS ARE RESPONSIBLE FOR DETERMINING AND MARKING ALL PROPERTY LINE AND EASEMENT LOCATIONS. THIS PERMIT MAY BE REVOKED IF THE SITE CONDITIONS HAVE CHANGED SINCE THE SITE WAS INSPECTED AND DESIGN APPROVED. FINAL INSTALLATION APPROVAL IS REQUIRED PRIOR TO TEMPORARY OR FINAL OCCUPANCY OF ANY RELATED STRUCTURES. For Final Inspection visit: masoncountywa.gov/health/environmental/onsiteloss-inspection-request.php or call: 360-427-9670, extension 400. 0-I ICIALJY ON v MASON COMM NITY SERVICES l 1 _3 COc In CO COUNTY U SWG 13 - o molt- o Z ON-SITE SEWAGE SYSTEM APPLICATION a A m n rl� Ir N THOMAS/STEPHANIE DAVIS 971-570-6875 - _ - —-L.n_INCADDRESS S'Nre I CITY SW-E ZIP CODE -$ 2634 NE ZANDER CT HILLSBORO OR 97124 F,;DICES,-STREET err,IP CORE 5100 SE LYNCH RD SHELTON WA 98584 oa NA N µ1EOL DFIIPNFR .yrp,F I —1 CINDY WAITE 360-701-0205 ,ME ILFa SEE a sees . rc C Pr RESIDENTALOSS ILI COMMUNITY()SS nC MM R LOSS X PHI J. IFIN IVI[u L E ❑ P TC !do-PARTY, TYOCO .k SE 7 PDBUF VikT F R„ EM, ONT=. , . NENIOONSTRUCT10Ni UPGRADE', i1 REPAIR. kEPLr F IFN` ❑ InH F XRLPAIC S.JDMIELA LS ❑ b E tl,S_' ❑ FrsfN RUFF ❑SHORELINE 4 'YTf DESIGN FORM'RFOUIREDI SE°TIC DESIGN REC II RI^ =F' ' r 0 C] RS nEAP CABLE 3+ACRES nn R GO OUT COLE ROAD, TURN LEFT AT TEE, ACCESS ROAD GOES BETWEEN 5100 I O AND 5030 SE LYNCH RD. DRAINFIELD AREA IS ACCESSED ABOUT 250' NORTH OF r ACCESS ROAD. RIBBONS ARE ON WHITE GRADING MARKER AND ON THE o 0 ENTRANCE TO THE SOIL LOGS. ! �. SITE MUST BE FLAGGED FROM MAIN ROAD AND TEST HOLES MUST SE FLAGGED NI IN FESFDOLE NVMbE< I I O - - - -- OI FI(IAI USF ONLY In OWT'IIS I INC .... •' CRAOL,I All LIRE SOURCE Jc a_..-.,u.ae. ❑VOLUNTARY 0 MAIN N SCE PUMPING 0:IT-SIN PER s ❑I-':'Ml ❑ .(.14 , .NT O.:I NSPL Rs)u l R. 111) , 1H36 0-Z5" FR iiid4d25'i keir+Ioi/-tfrt‘ �ffz 0-ig"f5c (�k ut Z8 ` wl hid T N3.O 2T fjtvOtt coL'IQ*l °p5i ed 79' `"/ mi `I +(I1 SOIL CODES. JFL UI. YiL -i dl V-VER S=CRPVFILY S L=LOAN .� �, x a &O �_e-T INS !NATURE 1,1 sSIY 1l16/ 023 I /76( 2076 II/(7/Zozj �y THIS FORM MAY BE SCANNED AND AVAILABLE FOR PUBLIC VIEW ON THE MASON COL N ry WEBS DESIGN FORM-PACE ONE -Assessors Parcel Number. 3 1 9 0 1 - 0 0 - 0 0 0 1 0 A design will be reviewed when 3 conies of each of the following are submitted: v Completed design form that has been signed and dated. ° Smiled layout sLctt h. including all applicable items On checklist Scaled plot plan. including all applicable items on checklist '1 ( s saction sketch_including all applicable grills till cilecklla. . This form may be scanned and available for public view on the Mason County Web site. 1/cuimrun poper USG: //'.k i-' PARCEL IDENTIFICATION Permit Number. W y S (I Zo13-00 CI 1 De.i oar s Name.. CINDY WAITE Applicant's Name: THOMAS/STEPHANIE DAVIS Ucv�nat s Phone Auoihcr.. 360-701-0205 Mailing Address: 2634 N E 7J\NDER CT I)csicncrr Address. 80 F PICKERING LANE HILLSBORO OR 97124 SHFI TON WA 98h84 Cir). State /ip City __- State tip DESIGN PARAMETERS 'Treatment De\ice ❑ Glendon Itiotilicr ❑ Sand Filler ❑ Mound El Sind I toed I)ce aid dd 0 ILu middling I Met. I ❑ nemhie Lail Make/Model ❑ uisimewinn I'a l vlakc]Meal Otlwr X02 TO OSCAR Urainticld type ❑ Gravity 0 Pressure 0 I tcncli ❑ Red ❑ ,Sub surface Drip Septic Tank/Drainfield Specifications Laterals Number of Bedrooms 4 / Schedule:( Pass NETAFIM Daily I'low: Operating Capacity 360 r gpd Length 50 Il Daily flow'. Design Flow 480 l gpd Diameter in Septic Tank Capacity(working) 1200 gal Numhei 8 Receiving Soil Type 0-6) 4 r Sepuration 5 I't Receiving Soil Appl_ Rate 6 .- gpd/IC Orifices Required Primary Area 800 - fi Iocil Number of Orifucs 8X50-400 , Designed Primary Area 800 r it I)iameter EMITTER in Designed Reserve Area 800 Ill Spacing 6 in Trench//Red Width 44.5 (di Manifold drench:Bed Length 18 A Schedule(kt. SCCHED ULE 40 Elevation Measurements I entth ) 200(SUPPLY/RFTURN) a Original Drainfield Arca Slope <1 Y„ e U ctcr ,�� x Pe New Slope If Altered t o I i . 1 in Tusi e of Soli p7$.uy uo�i'�y d' ❑ vos ❑ No Depth of Excavation I.P51 n= 0 in - 3P� itspurl Pipe from Original Grade a shin. ` In S Sul. CPk s �\N NA rIN Yr plr �+ Designed Vertical Separation 12 in iooIRI . 8e ..IGNER 11 Gnvelless Chambers Required? 0 Yw ❑ No ❑ Opli,mul n ,e , P , - in Pump Required? ❑Yes O No in and Pump Chamber Pump/Siphon Specifications Number of doses du' 360 Ditt. in Elevation Between Pump& Uppermost Orl Ilce Il Dose quaint() 1 03 gal Draintield Squirt height Selected Residual (hcadl II C liambcr C nn n) 1 Hood) 1700 gal Uppermost Orifice fl�lligher 0 Lower than Pump Signori Pump co n roll lease check Mh required. VA Capacity Coil Total Pressure I lead eon)._ l❑ -n Al ier DI ❑ Ism emit Counter Calculated 1 otal Pressure I lead 14 4828 11 If I insr. P.unp on— 30SFC . Pump oil 4 5 MIN _ Ceimnenis CONCRETE TANKS REQUIRED, FOLLOW X02 INSTALL MANUAL. CONTROLS TO BE SET AT 75% OF DESIGN FLOW. (APPROX 360 GPD) DESIGN FORM- PACE TWO Assessorr s hued! Number:3 s 9 0 1 - 0 0 -- 0 0 0 1 0 Permit Number SV6G DESIGN CHECKLISTS ' Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch 61 Test hole locations fill Drainficld orientation and layout Reference depth from original grade: g Soil logs R l French:bed dimensions and g Septic lank WI Property lines critical distances within layout g Drainlield Loser WI Existing and proposed wells' D-Bac A'nhe bs+x ligation, Reference depth from original crate within 10011 of property fill Septic tanlepunip chamber and restrictisc strata_ ❑ Measurements to cuts, banks. and locations RS linter:1k. trench%bed, top and surface water and critical areas f,I ( hscn ation port location bottom ❑ Location and orientation of 0 ('lean out ligation ❑ Curtain drain collector curtain drain and all absorption ❑ Manifold placement P 0 Sand en_rncnl2l ion components ❑ Urilicc placement Other cross-section detail: EZI Location and dimension of114 g Observation ports/clean-outs La primary system and reserve area lateral placement ssilh distance to edge of bed liiiBuildings Other Information g Audihleh isunl alarm referenced Yes No El Direction of slope indicator g Scale of draw inp shown on scale d ❑ Design staked out Waterlines bar 0 D Recorded Notices inched id Roads, easements.driveway s. ❑ 0 Wais Ms)attached parking ❑ 0 Pump curs c attached North arrow and scale drawing 0 0 IN:dilation of'allure shown on scale bar Non-residential justification 0 ❑ Waste strength _ ❑ ❑ Plow DESIGN APPROVAL The undersigned designer mat he notitilliy by install//ye a al lime of installation Y Yes ❑ No 144-6 Sig c1 Designer Date The undersigned has reviewed this design on behalf of Mason County Public I Iealth and determined it to be in compliance with state and local on site reg Irons: j/l l 77zazi Environmental onmental I lealth Specialist Date CAUTION: DESIGN AI'PROVAI, IS VALID ONI.V I NDF.R UHF. FOLLOWING. CONDITION: ✓ the design is stamped 'Approved : bs Mason Looms Public I lealdi_ / '[heOnsite Sewage Permit has not expired_ the Permit I xpiration Date is: C7/7‘(20'76.1 ✓ Drainlield site conditions have not been altered to adh c.eh infect conditions of design approval. a�wvvv\ ' I l 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. I pdamd Date IS77015 Mason County WA GIS Web Map l n r L 4 , 5 "�� Pair a[6r, eoi.a7 6alten :�'J _ ,.,r>y, CG(/ F'YI a J' ' r_. 10/24/2023, 8:41.18 AM 1.3,075 3 1 t, i County Boundary 0 ; ; uns -� 0 ' °i 004 0 00 0J6 km No Filled Tax Parcels (Zoom in to 1.30,000) oo o b. . N_ -; l� 2 (1 4 c.,(; i } N cl 'I , tl c c I / ov nGN L7 1 ���YYY �/ CoLIWNSC. OFSiGNER11 c-- J ° T\- 1 a 4d tx V ic ts- Ir °1 J } r \^ .\ N p ` - .� 'O V M V IC) NNOCM ...IBC } k O O N p > m z o 0 o O O ONOw mAOOOr M rr' - m ... �1 CO S. v (nnCC 0000 r HmZyA * 73> 7JC D � (0rm Dr TT m T, npr Z oo H in m y z a < § / \ \ � :� / i 3 : \ } j cc ▪ : « < \ ; \ \ U 1 � . © . . . ce ca. ee . / \ H ® oF / . - \ •r h - : 0 = ( } « \ £ \` a . � § Len \/ l \ ~ - -— ' » « I ) /} \\ � / ® lk : \ . � _A St \ >„ . \\ ` / / ( (?Q _ \ s • TABLE a \/\ Hydraulic Layout py 05-50 coils Min 4 4 1 1.4 7.8 50' =:.it 5 5 1 1.75 9.75 50' , :-' 6 3 2 2.1 6.2 50' 8 4 2 2.8 9.2 50' 480 - 8 4 2 2.8 9.2 50' 10 5 2 3.5 11.5 50' TABLE 3 Hydraulic Layout OS-100 coils gill Total Filingint; 2 2 1 1.4 4.6 50' nil 3 3 1 2.1 6.9 50' ` •0 4 4 1 2.8 9.2 50' 5 5 1 3.5 11.5 50' TABLE 4 Minimum Shoulder Lengths 05-50 x.6.0• r, /i e 240 22.5 ,�f r,.:,. aA 300 28 ' - Z� ll��' 418 360 33.5 0 wAir 480 44.5 g. ;i cErv� ttss. 600 55.5 The dimensions in Table 4 represent the minimum required length of the outer shoulder which include coils, spacing between coils, and shoulders. These lengths can be extended to match site conditions. Minimum shoulder spacing and spacing between coils is 6 inches. See illustration below for example of shoulder length. F=L(OjKO)^1.85 F=friction loss through pipe I feet of head L=length of supply line in feet Q=Flush GPM K=47.8 (1'SCHEDULE 40) LENGTH 200 Q FLUSH GPM 9.2 K (1" SCHEDULEN 40) 47.8 FRICTION LOSS 9.486278 Elevation difference 5 TDH 14.48628 <50 EXCESS TDH GMP DISCHARGE AT DF EMITTER GPH 0.42 MINUTES PER HOUR 60 # EMITTERS 50 t$COILS 8 GPM PER COIL 0.35 GPM PER TOTAL COILS 2.8 DOSE VOLUME GPM PER COIL 0.35 COILS 8 SECONDS IN MINUTES 60 SECONDS ON 22 GALLONS PER DOSE 1.03 TIMER SETTING TIME OFF 3.5 TIMER ON 1 a- ^ pm TIMER SETTINGS GPD 360 ^Ess".t- +..'; GP DOSE 1.03 w1t,� DOSES PER DAY 360 (�.J 1 Ij is, • "1.")GPD 369.6 OK �v.nn q n LICE N577S.)DESIGNER �iS:SSiRr l�l\>4 X02 Tanks etimm 2/3 1F3 - - . , . ii 1000 Gallon 1000 Gallon 11'a 11111111/ 2/3 113 — n • • N� • • R:. awk5 Treatment tank Discharge tar r' j y Illustration 1 ur, .0 SIGNER 36 t`�xsv.SSIS1-m % Z1 om. Introduction: The OSCAR-X02 treatment system is comprised of two technologies: the XO2(4 chambers: septic, aeration, clarifier, and pump chambers) and the OSCAR_ drip tubing coils, C-33 sand, reverse flush headworks, and control equipment. Wastewater is collected in the septic chamber where gross solids am separated. The waste stream is then aerated in the aeration chamber. Aerated effluent passes through the clarifier then into the pump chamber. The expected waste strength from the XOF will be 30 mg/I CBODS and 5 mg/I TSS. Effluent is dosed through a 120 mesh disc filter to OSCAR coils, installed in ASTM C-33 sand. Effluent discharged from the coils is treated by the sand prior to infiltrating into the receiving soil. The treatment level in the final discharge is expected to reach 2 mg/I CBOD, 1 mg/I TSS, and 36 FC/100 ml, meeting Treatment Level A. The X02 can only be used with the OSCAR. / g \'( (4 re 12O0 c: lit 6Ri 1 , Design: Single family residence packages are designated as: OSXO2-240, OSXO2-300, O5XO2-360, OSXO2-450, OSXO2-480, and OSXO2-600 and have the corresponding design flows of 240, 300, 360, 450, 480, and 600 gallons per day. The OSXO2-240 - 480 are standard packages. Design flows greater than 480 gallons per day arc considered custom and will require design assistance from Lowridge Onsite Technologies, Inc. For the standard single family residence OSCAR-XO2 package parts list see the appendix. The XO2 can only be used with OSCAR coils. All tanks must be approved by Washington Department of Health as wastewater vessels. The system can be designed in increments of flow up to 3500 gallons per day. The OSCAR has different sizing criteria than the XO2. The XO2 is designed in increments ranging from 500 to 3,500 gallons per day (for reference, see Table 1-2). The OSCAR is designed in increments of 62.5 or 125 gallons per coil per day, depending on coil model (see Tables 2 and 3). Consequently, a design for a 7 bedroom system (840 gpd) could incorporate two 1750 gallon, two compartment tanks plus an addition aerator (OX2+ 1 kit) with 14 OS-50 OSCAR coils (875 gpd). XO2: The tanks for the XO2 can be arranged in different formats. One option is to use two double compartment tanks of the same size, either made of polyethylene or concrete, with the following criteria: Treatment Tank: The partition wall between the first and second compartment of the treatment tank must have either a 4 inch by-pass hole or the bottom of a tee baffle must extend down between 40% to 6Oo of the liquid depth of the tank. Discharge Tank: The partition between the first and second compartment of the discharge tank must have a 4 inch by-pass hole located at least 18 inches above the floor of the tank or no more than 27 inches between the bottom of the by-pass hole and floor of the tank. Recommended Night of by-pass hole is 18 inches. To determine the tank size for design flows greater than 500 gpd, the tanks can be up size proportionally. Example: Tanks for a 500 gpd design = 1 ,000 gallons .tl A 7 bedroom design (120 gpd x 7) is 840 gpd. e- 840 gpd/500 gpd = 1 .68 or 68% increase r,� - A4ihi k k size for 840 gpd = 1 ,000 gal. x 1 .68 = 1,680 gallons i efor( tk. 1750 gallon, two compartment tank can be used. a2 V s ' NS r G a nE � m �l \� ' LI NS \ \< -:.\\ Ilk JAM!.• may,�� EXPIRES uSnP N For tanks with water tight, structurally sound partitions: for both the treatment tank and discharge tank a double compartment tank with tee baffles can be used (no flow through ports). Flip the discharge tank around so the smaller compartment is first as shown (see Illustration 2). The clarifier chamber is to remain full. I ,,, 0 I r y ~ 'r 'r _r : r F r c k Illustration 2 As the daily design flow rates increase, larger tanks will be needed. It may become necessary to have individual tanks for each chamber or a combination of tanks to meet the volume requirements. For example: 3,000 end design flow (refer to Table 1-2). Septic chamber = 4000 gal. needed, use a 3000 gal. tank + 1000 gal. tank. Aeration Chamber = 2-1000 gal. tanks. Clarifier chamber = 2- 1000 gal. tanks. Pump chamber = 3000 gal. tank + 1000 gal. tank. In this example, the septic chambers could be connected using standard tee baffles making a two compartment chamber. The aerator chamber could be arranged the same as the septic chambers. Half of the diffusors would be placed in each 1,000 aeration chamber. The clarifier chambers could either use tee baffles or be connected together below the liquid level. The co fined pump chambers must be connected below the liquid level. ? P ilit44, - `c, 2a LICEDESIGNER I �'�� 1b \�\ L , vv l0 LA Lity 03 W LL t o W L O LII ' y `9 D04i0 O GIN Ilk gr L ESIGN*AIM 1 CENSED DESIGNER \\ \ 1250SR & 1250SR-HW Usc wv 1 J0 C47a,rv1e /04/Zy G^i(' (lak,, y(oL c4 ,1 6'Alt /at p4.,,,p t¢ 11-1 i \I i (1 I ;I ✓n \ I Ii / I ill t r `, 3✓) 0 CN ESIGN .{ � . 1 / L. F UESIGNE^ ,nruro nw o`nnrec .� m A '1 4 rnsr-n-stiu CASKET I B. roe. nu i, 1i ll f. m w,. �4 LGO'J <nn. gee 0AlS c /2 I I A— i 1 v\\/ � .P 1 0,e . v\/r' 1,rl- I IiS . Headworks: HWN-.7-RF • ''A inches Arkal disc filter, mesh, 130 micron • �/4 inches Arad flow meter • Three oil fitted pressure gauges (0-100 psi) ' 5 Netafim normalcy closed solenoid valves (Model 80) II' x, t, , 1 OSCAR-X02 Parts list (500 gpd). Each OSCAR-X02 unit will include: 3��vt�y'��: 3m�� -� ' LF1P-RF-AR or LF1 P-RF-ARA control panel ��, �i� �N' LOT-30, 1/2 hp, 120 volt pump ., ,o./ `ii1 f% • Hi-Blow Aerator, HB-80 (80 titer/minute) ,q LCENSE` scrrc�' ��ti • Hi-Blow diffusers dS;rszzs�r. tv1:vrc • OS-50 or OS-100 Coils " - • PVC fittings and drip tubing adapters • HWN-.7-RF automatic headworks • Solid '/ inches poly tubing for connections ' 2 float switches \\) OSCAR-X02 coil Connections 'n am 1_ g. �ws Manifolds and supply lines are 1 inches Sch 40 PVC e t� 4U�•�pkD'1� t �I r ♦. f " fp";;� Manifold and blank tech line adapter and connection. • r Ft:td" 23 t y`✓ N '1�7 rr .Yv a zV 1 I .., w�nf 11 t'?G.i r"sPr 3+' } a"" AtcF,la �y1 r i[wv PFcir,uF�� • 't Y '_ Ags! a,; • ry , x �f-,$FPY/ i.,. f.:1 1 2 r itpi Blank tech liner and Bioline connection with internal coupling \\A Inspection ports. .e Screw Type Cap Screw -type Cap or Slip Cap or Slip Cap < 4" PAY. Pipe < 4" PVC Pipe (Length Varies) (Length Varies) 1.4 c 4" Long Slue(4)'a 90* Apar( < Toiler Ring r 4" PVC Ice OSCAR Cover Options. There may be a desire to cover the OSCAR with something additional to the specified ASTM C-33 sand. The intent is not to have too much additional cover over the final C-33 sand layer. Placing too much cover will inhibit plant root growth. Because the C-33 sand is sub-surface irrigated, grass and other ground cover wilt grow rapidly, forming a firm protective cover over the OSCAR. At the end of the first growing season the C-33 sand layer wilt be as firm as native soil to walk on. Options include: • landscaping jute mat with grass seed or ground cover plantings • a thin layer of mineral soil low in organic content (-10% organics) • Thin layer of crushed or washed rock for wind erosion protection. • Thin layer of bark to wood chips. Do Not Cover C-33 Sand with: • organic mix (manufactured top soil from compost) • filter fabric , FD Y Cms ci OS DY[ Al1E a LICENSED DESIGNER • Installation Notes Oscar-X02 Treatment System 5100 SE Lynch Rd 3 19 0 1-00-00010 1. Stumps in the drainfield area must be cut down to ground level or below. 2. Installer and designer must meet on site prior to installation. 3. Oscar drainfield: ASTM C-33 sand media as per Washington Department of Health's Recommended Standards and Guidance for Intermittent Sand Filter. 4. Concrete two compartment tanks required for septic and pump (See pages 8 throughl0) 5. The prepared site plan is not a survey. It's the owner's responsibility to verify property lines, utility lines (water. sewer, power, phone and gas) prior to installation. 6. Minimum of 6" of sand throughout out the lateral(coil) area, must be level. 7. Oscar X02 parts list on Page 13 8. The tanks may be moved as necessary to accommodate building requirements. 9. Septic tank location must meet all required setbacks. 10. Keep wheeled vehicles off the drainfield area before. during and after installation. 11. Tracked equipment only 12. All ground, surface water and roof drains must be diverted away from the septic tanks and drainfield. 13. Ensure the final grade slopes away from these areas and water doesn't collect on or around them. Use swales, berms. catch basin and tight lines, curtain drains. etc. to divert all waters 14. Curtain drains can be no closer than 10' upgradient and 30' down gradient of the drainfield 15. Exposed restrictive layers cuts. banks, etc can be no closer than 50' downhill from the drainfield. 16. Install access risers on all tanks. valve box and ends of laterals. 17. Make sure septic tank risers are epoxied or caulked to cast in riser rings on tank. 18. Lids must form a water and gas tight seal with the access risers. 19. This system must be installed by a Mason County Certified installer. 20. Deviation from this design without prior approval from the designer and Mason County Health Department will make this design null and void. 21. This design was sized per Washington Administrative CodeWAC246-272A-0230. The operating capacity is based on 45 gallons per day per capita with two persons per bedroom. The minimum design flow per bedroom per day is the operating capacity of ninety gallons multiplied by 1 33. This results in a minimum • ign flow of one hundred twenty gallons per day. This creates a surge factor of 33% ngt (.4 ticipated flow is ninety gallons per bedroom per day. A t s � 3 ��;'� Mrec4, TCAUL C SIGNER LIC _co C SIGNER System Owner Responsibilities: 1. Operation and Maintenance is required by Washington State Department of Health and Mason County Health Department. 2. The septic tank and pump tank should be pumped every three to five years or as needed. 3. System owners are responsible for having maintenance performed annually. 4. System owners are responsible for responding to septic issues in a timely manner. 5. System owners shall not at any time change or alter settings in the control box. 6. System owner agrees to read and abide by information regarding their system in the User Manual provided by Mason County Public Health. 7. Keep the flow of sewage at or below the approved design operating capacity. 8. Leaky plumbing can hydraulic overload your on-site septic system 9 Keep waste strength at residential waste strength parameters. 10. Spread loads of laundry through the week. 11. Do not use excessive bleach or detergents with added whiteners. 12. Do not shower, do laundry and dishwasher at the same time 13. Antibiotics can kill or impair the biological process in the septic tank. 1 1 P PmI 1, 1104 1 re Fl m IF 3 1 oLICE iED DE VV IF v.^. A k1k\'1