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HomeMy WebLinkAboutSWG2023-00282 - SWG Application / Design - 6/30/2023 584 MASON COUNTY 415N6THELTON: 6&427-O70,EXT 400 SHELTON:360427-4467,EXT 400 BE ELMA:360-2764469,EXT 400 ,��', r- ' Public Health & Human Services ELMA:3604B252fi9,EXT400 FAX:360427-7787 On-Site Sewage System Permit: SWG2023-00282 APPLICANT ERICKSON MCGOVERN ARCHITECHS Phone: 253-208-3235 Address: 123 XXX XX, XX. 00000 APPLICANT SCHOOL DISTRICT#402 Phone: 1.360.426.9115 Address: PIONEER CONSOLIDATED SHELTON,WA 98584 OWNER SCHOOL DISTRICT#402 Phone: 1.360.426.9115 Address: PIONEER CONSOLIDATED SHELTON,WA 98584 SEPTIC DESIGNER Mike Williams-Evergreen Septic Phone: 360-687-9919 Designs Address: 2210 W. MAIN ST STE 107#325 BATTLE GROUND, WA 98604 Site Address: 611 E AGATE RD Primary Parcel Number: 320012160010 Permit Description: New Commercial 450GPD-30 office workers-pressure trench Permit Submitted Date: 06/30/2023 Permit Issued Date: 09/07/2023 Issued By: David Anderson Current Permit Fees Paid: $1,470.00 fees may l requY e�nlnsWladm entsml, Permit Expiration Date: 05/23/2026 (easedondatadlnnscti.) 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 poor 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 Asbui#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 ® rmn5new SkXenwafw OAIEPECEIYEO: /, MASON COUNTY COMMUNITY SERVICES MDNTM=ERD/I'/ PECENEDW: / m-Clty P,wk NMIM IONmmunite HealtB2nrlmnm lHeats) (� .�/(%/� f/1 SWG 2p23 - Z w 0 O A 2 N ON-SITE SEWAGE SYSTEM APPLICATION 3 z APPLICANT PHGNF m 0 m r Erickson McGovern Architects 253-531-0206 Ext . 2012 (Cicely) _ MMLINGADDRESB-STREET,CITY.STATE.ZIP CODE 101 E 26th Street Suite 300 Tacoma, WA 98421 O m 3"EADDRESs 110 E. Spencer Lake RD Shelton, WA 98584 1 NAMECFDESIGNER PHONE I\ V Ever Green Septic Design, INC 360-687-9919 O O y NAME OF INSTALLER PHONE TBD V PERMITTYPE(gl N DRINKINGWATERSWRCE y III RESIDENTIALOSS UCOMMUNITYGSS COMMERCIAL DES IEBT FIRIVATE INDIVIDUAL WELL PRIVATE TY = � TYPEOFWCIM(aab ) pp PUBLIC WATER SYSTEM ff NEWCONSTRUCTION/UPGRADES F)REPAIR/REPIACEMENT OTHER DETMLS(a aIVwoYI, OTABLE IX REPAIR SUBMmALS qq�� 0 SURFACING SEWAGE 0 EXISTING FAILURE 0 SHORELINE m 5I DESIGN FORM(REOUIRED) JOSEPTIC DESIGN(REQUIRED) BEDROOMS LOTSIIE O f)WAIVER(S)(IFAPPLICABLE) DIRECTICNSTOSREANDSITECp1O1 MS:(u.btl:el , From Shelton- Continue onto WA-3 N, Turn right onto E Agate Rd, Turn left onto E Spencer Lake Rd r O &R MUBTBFRAGGEO iNOYYAM ROAOANOIESTMOLEBMUSTBE FLGO®MTINTF9TNCLENWIBFl1A OFFICIAL USE ONLY BELOW THIS LINE V UPGRADEIFAIWRESOURCEft,* p .) ❑VOLUNTARY OMAINTENANCErPUMPING 0BUILDINGPERMIT OHOMESALE OCOMPLAINT DOTHER: NSPECTOR BOIL LOGS COMMENTS/CONDITIONS 7fl1 , 0 - y7 GS1 (H7}M0+f N. a 3 y- Ir 4 )J o Wei d bo+h rt_l� 0-yo =LCODE-ate RECORD DRAWING AND INSTALLATION REPORT V=WRY G=GRAVELLY B=SAND L=LOXM &=SILT C=CLAY E=EXTREMELY R-ROOTS REQUIRED FOR FINALAFPROVAL. INSPECTORSIGNATURE DATE APPUGTONEXPIRATIONDATE APPLIGTI NAFPROViNISSUED BY DATE R-� fh 9 310;3 THIS FORM MAYBE SCANNED AND AVAILABLE FOR PUBLIC VIEW ON THE MASON COUNTY WEBSITE REYWDIW/AI5 DESIGN FORM-PAGE ONE Assessor's Parcel Number: 32001 - 21 - 60010 A design will be reviewed when 3 conies of each of the following are submitted: •Completed design form that has been signed and dated. I Scaled layout sketch,including all applicable items on checklist v Scaled plot plan,including all applicable items on checklist. 0 Cross-section sketch, including all applicable items on checklist. This form may be conned and available for while view on the Mason County Web di a.Maximum paper size.' 11"X 17- PARCEL IDENTIFICATION Permit Number: SWG a 023- 00181. Designer's Name: Ever Green Septic Design, INC Applicant's Name: Erickson McGovern Architects Designer's Phone Nomber: 360-687-9919 Mailing Address: 101 E 26th Street Suite 300 Designer's Address: 2210 W. Main ST STE 107 R325 Tacoma, WA 98421 Battle Ground, WA 98604 City State Zi City State zip bESIGN PARAMETER Treatment Device ❑ Glendon Biofilter ❑Sand Filter ❑Mound ❑ Sand Lined Drandiield ❑Recirculating Filter,Type: ❑Aerobic Unit Make/Model ❑Disinfecdon Unit Make/Model Other: Drainfield Type ❑Gravity p1 Pressure ❑Trench ❑Bed ❑Sub Surface Drip Septic Tank/Drafnffeld Specifications Laterals Number of Bedrooms N/A Schedule/Class SCH 40 Daily Flow: Operating Capacity 338 gpd Length 84 ' (each) ft Daily Flow:Design Flow 450 Slid Diameter 1 .25 in Septic Tank Capacity(working) 1500 gal Number 3 Receiving Soil Type(1-6) 4 Separation 3 ' (6 ' o. c. ) ft Receiving Soil Appl.Rate 0 , 6 gpd/fir Orifices Required Primary Area 750 fte Total Number of Orifices 42 Designed Primary Arco 756 ft' Diameter 3/16 in Designed Reserve Area 750 R2 Spacing 72 in Trench/Bed Width 3 ft Manifold Trcnch/Bed Length 84 ft Schedule/Class SCH 40 Elevation Measurements Length 2 ft Original Drainfield Area Slope 3+/- % Diameter 1 . 5 in New Slope,If Altered NA % Preferred manifold configuration used? O Yes O No Depth of Excavation Upslooe 01, 1,9 16 — in Transport Pipe from Original Grade Down-dope's flsg (6" min) in Schedule/Class SCH 40 Designed Vertical Separation 24 in Length 290 ft Gra4elless Chambers Required? W Yes ❑No ❑Optional Diameter 2 in Pump Required? W Yes O No Dosing and Pump Chamber Pump/Siphon Specifications Number ofdoses/day 3 Diff.in Elevation Between Pump&Uppermost Orifice R+/-ft Dose quantity 150 gal Drainfield Squirt Height/Selected Residual(head) 2' minft Chamber Capacity(flood) 1275 gal Uppermost Orifice 0 Higher O Lower than Pump Shutoff Pump controls:Please check those required. AE M 7� 2 4 . 8 gpm Winter ®Elapse Meter 09 Event Counter . tat sure e 19. 1 ft If Timer: Pump on 3.8+/- (TSD),Pump off 8 bra Commen�s� -r JCPXUna021stxation building. (Maximum) 30 staff X 15 gal/day 950 GPD ASON COUNTY ENVIRONMENTAL HEALTH DESIGN FORM—PAGE TWO Assessor's Parcel Number: 32001 -- 21 -- 60010 Permit Number: SWG DESIGN CHECKLISTS Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch ® Test hole locations M Drainfield orientation and layout Reference depth from original grade: ❑ Soil logs 19 Trench/bed dimensions and M Septic tank Property lines critical distances within layout M Dminfield cover ® Existingand proposed wells I@ D-Box/Valve box locations IMP Reference depth from original grade within 100 ft of property Septic tank/pump chamber and restrictive strata: ❑ Measurements to cuts,banks, and locations 19 Laterals,trench/bed,top and surface water and critical areas f9 Observation port location bottom (9 Location and orientation of ® Clean-out location ❑ Curtain drain collector curtain drain and all absorption Manifold placement ❑ Sand augmentation components Orifice placement Other cross-section detail: IM Location and dimension of ❑ Lateral placement with distance N Observation ports/clean-outs primary system and reserve area to edge of bed M Buildings Other Information lg Audible/visual alarm referenced Yes No M Direction of slope indicator Scale of drawing shown on scale N ❑ Design staked out ® Waterlines bar ❑ M Recorded Notices attached ❑ Roads,easements,driveways, ❑ 0 Waiver(s)attached parking M ❑ Pump curve attached El North arrow and scale drawing ❑ ® Evaluation of failure shown on scale bar Non-residential justification ❑ ❑ Waste strength ❑ ❑ Flow DESIGN APPROVAL The undersigned designer most be fi Inin'sta/ller at time of installation la Yes ElNo Ill 6-16-2023 Signature of Designer Date The undersigned has reviewed this design on behalf of Mason County Public HealthA C rt 6.D compliance with state and local on-9' a regulations: ffa� 9�jo7� SEP 0 7 2023 E vtrmnmemal Health Specialist M COUNTY ENVIRONMENTAL HEALTH CAUTION: DESIGN APPROVAL IS VALID ONLY UNDER THE FOLLOWING CONWION: ✓ The design is stamped"Approved"by Mason County Public Health. ✓ The Onsite Sewage Permit has not expired,the Permit Expiration Date is: sb ✓ Dminfield 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: 12/72015 ! 0z 2 \ E ` 2fE 7 { � ` e \ / � ] £ ) # _ \ , } m \ § { § koA § - � \ \ Er � / \ \ 0 \ Y I P 0 � \ \ j ! § 2? ~ 1 0 m2 � } k9 m j El - ! ! ; ! ! ; ! ! ; ° - { [ E ! \ � \ o lgEl • ! ! iE , . . £ . . ] _ § / 0 3 } j � k \ ƒ / } } � \ § . ` 00 \ 0.EF \ \ k E 2 ƒ _ - M ( Oz ❑❑❑❑❑ NCO vrD 3m N DN � m mO oou! y0vo 35 e ry N D O m C N 5. H G (� -" a O m a m r m a m m. 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El N 3 � 030 . m r0 a 9m Z 0> a = y m C =gym : m 0 O co a m = z> N t c c � m ym m 'o m m m 3 ON -SITE WASTEWATER SYSTEM DESIGN PRESSURE DISTRIBUTION WITH GRAVELESS PANELS AND TIME DOSING DESIGN DATE: June 16, 2023 CLIENT MAXIMUM LIQUID WASTE FLOWS Pioneer School District 112 E.Spencer Lake Road Operating': 338 gallons per day Shelton,WA 98584 Design": 450 gallons per day (360)426-8291 'See WAC 246-272(A)0230(2)d TREATMENT LEVEL: "E", Pressure Distribution PROJECT LOCATION 110 E Spencer Lake RD Shelton WATER SOURCE: Shared Well SEWER DISTRICT: None PARCEL NUMBER: 320012160010 PARCEL SIZE: 32.39 Acreyf A HARO A� 4 •ASy S6oN 01/ - nFy� 101� Q qo 'ORAL 1114 ENGINEER: Mike Williams, P.E. PROJECT NUMBER: 23040 OTHER(S) KNOWN FAMILIAR WITH PROJECT PROJECT SPECIFIC NOTES Administration Building-(Maximum) 30 staff X 15 gal/day=450 GPD . . t EVERGREEN SEPTIC DESIGN, INC. (360)687-9919 • www.EGSD.com • info@EGSD.com DESIGNED FOR: Pioneer School District PROJECT LOCATION: 110 E Spencer Lake RD Shelton Model TANKS UTILIZE: 1500 gallon min, 2-comp.septic tank SPS 1500SR AND: JQW gallon min pump tank SPS 1250P Yyyin 1\Zs SOIL AND DRAINFIELD LOADING RATE: 0.6 gal/sf/day DEPTH INFORMATION SLOPE FOR DESIGN: 3 percent RESTRICTIVE LAYER: 43 inches VERTICAL SEPARATION: 24 inches MAX TRENCH DEPTH: 19 inches MIN TRENCH DEPTH: 6 inches percode DRAINFIELD AREA MIN REQ'D: 450 gal/day _ 0.6 gal/sf/day = 750 sf CHOOSE: 3 lateral(s) x 84 feet x 3 feet = 756 sf lateral(s) x feet x 3 feet = 0 sf lateral(s) x feet x 3 feet = 0 PIPE/PUMP SIZING&CONTROLS - 756 sf DISCHARGE PIPE Transport Pipe Manifold Pipe 1.5 inch dia. 2 inch dia. 1.5 inch dia. 8 It length 290 It length 2 ft length Feeder/Lateral Pipe Orifices Head (friction+residual+elevation) 1.25 inch dia. 3/16 inch orifice dia. 9.1 feet friction head(min) ' 25 ft length (feeder) 6 foot orifice spacing 2 feet residual head 252 ft length (lateral) 42 total orifices 8 feet elevation head MIN PUMP REQUIREMENTS: 19.1 feet of head at 24.8 gallons/min (minimum) CHOOSE: Liberty 290 Series pump which is shown on the graph below(or approved equal) AND: Orenco 51 PT ETM CT or approved equal audio/visual alarm panel per specifications PUMP AND SYSTEM GRAPH DOSING VOLUMES AND FLOAT SETTINGS X-75% 9.0 inches in SPS 1250P tank RESERVE+ 7 40 =SURGE 25.3 inches in SPS 1250P tank Pump YVOLUME Curve W 30 ou i — — System Z=DOSE 3 per day@ 150 gal x curve = 6.7 inches in SPS 1250P tank o 20 i O Mir Roy Point la � � ___._ ... R�CHnp0 N rA9q,YC�C a � Fe 0 30 20 30 40 60 60 FLOW(GPM) t-0s S20XAL e Based on f=length for including bends, in eeuie E G S D s.i'tark pipe length for couplings,bends,etc. +includes air space in septic tank GENERAL CONSTRUCTION REQUIREMENTS: • DISCREPANCIES IF ANY DISCREPANCIES ARE FOUND BETWEEN THE PLANS,CALCULATIONS,SPECIFICATIONS OR EXISTING CONDITIONS, THE INSTALLER SHALL IMMEDIATELY NOTIFY THE ENGINEER. ANY PROPOSED CHANGES TO THE DESIGN MUST FIRST BE REVIEWED AND APPROVED BY THE ENGINEER AND POSSIBLY THE LOCAL HEALTH DEPARTMENT. • DRAWING RELIABILITY-DRAWINGS ARE BASED ON SURVEY AND DESIGN DRAWINGS PROVIDED BY OTHERS AND ROUGH FIELD MEASUREMENTS. INSTALLER TO VERIFY ALL DETAILS. • LICENSE-CONTRACTOR SHALL BEA LICENSED SEPTIC INSTALLER IN THE COUNTY IN WHICH THE WORK 15 BEING PERFORMED AND HOLD ALL NECESSARY ENDORSEMENTS AND CERTIFICATIONS FOR ANY PROPRIETARY PRODUCTS SPECIFIED IN THE DESIGN. • STANDARDS-ALL WORK AND MATERIALS SHALL CONFORM TO ALL CURRENT COUNTY HEALTH DEPARTMENT AND WASHINGTON STATE DEPARTMENT OF HEALTH RULES&REGULATIONS INCLUDING BUT NOT LIMITED TO WAC 246-272A,BAND C. • MATERIALS-ALL MATERIALS AND EQUIPMENT SHALL BE NEW,UNDAMAGED AND OF STANDARD QUALITY • OTH ER PERMITS I NCLUDING BUT NOT U MITED TO:PLUMBI NG,ELECTRICAL,GRADING,WETLAND,FISH AND WILDLIFE,ETC MAY ALSO BE NEEDED. PROJECT OWNER OR CONTRACTOR SHALL ENSURE ALL NECESSARY PERMITS ARE OBTAINED. • SETBACKS-PRIOR TO STARTING CONSTRUCTION,CONTRACTOR SHALL DOUBLE-CHECK THE PROPOSED SYSTEM COMPONENT LOCATIONS AND ENSURE THEY MEET ALL OF THE REQUIRED SETBACKS. GENERALLY,THIS INCLUDES:(1)015POSAL COMPONENT 300 FEET FROM SURFACE WATER AND WELLS,10 FEET FROM PRESSURE WATER LINES AND FOUNDATIONS,5 FEET FROM PROPERTY/EASEMENT LINES AND TANKS AND(2)ALL TANKS,D-BOXES,PUMP CHAMBERS AND CONTAINMENT VESSELS 50 FEET FROM INDIVIDUAL WELLS,100 FEET FROM PUBLIC WELLS,10 FEET FROM PRESSURIZED WATER LINES,50 FEET FROM SURFACE WATER,AND 5 FEET FROM FOUNDATIONS AND PROPERTY/EASEMENT LINES. ANY WATER PIPES NOT MEETING THE REQUIRED HORIZONTAL SEPARATIONS SHALL MEET DOE MANUAL Cl-9 REQUIREMENTS. • UTILITY CONFLICTS EXISTING UTILITIES ARE SHOWN BASED ON A SURVEY DRAWING BY OTHERS.NOT ALL EXISTING UTILITIES ARE NECESSARILY SHOWN. INSTALLER SHALL TAKE ALL PRECAUTIONARY MEANS REQUIRED TO LOCATE,PROTECT AND MAINTAIN REQUIRED SETBACKS FROM ALL UNDERGROUND UTILITIES INCLUDING CALLING THE"ONE CALL"UTILITY LOCATE SERVICE AND COORDINATING WITH THE PROPERTY OWNER PRIOR TO BEGINNING ANY EXCAVATION. • CLEARING AND GRADING-ANY EXCAVATIONS,FILL,STOCKPIUNG.HEAVY EQUIPMENT USE OR OTHER GRADING IN THE PRIMARY OR RESERVE AREAS MAY INVALIDATE THE DESIGN.WORK MUST NOT COMPACT,SMEAR OR OTHERWISE DISTURB THE NATIVE SOIL. • TANK ABANDONMENT-TANKS)SHOWN ON THE PLANS TO BE ABANDONED AND ALL OTHER EXISTING,UNUTILIZED SEPTIC TANKS ON SITE SHALL BE ABANDONED BY PUMPING THE TANK BY A LICENSED SEPTIC PUMPER,CRUSHING THE TOP AND SIDE OF THE TANK(OR REMOVING THE TANK ALL TOGETHER)AND FILLING WITH AGGREGATE,SAND OR COMPACTED NATIVE SOIL. ALL BACKFILL SHALL BE COMPLETED ACCORDING TO THE PROJECT GEOTECHNICAL ENGINEER • STAKING-IF GRAINFIELD STAKING IS MISSING,CONTACT ENGINEER TO ENSURE PROPER INSTALLATION LOCATION. STAKES PIACED BY ENGINEER ARE APPROXIMATE,MAY HAVE BEEN MOVED AND SHALL BE VERIFIED BY THE CONTRACTOR. • INSPECTIONS-PRIOR TO BACKFILLING ANY COMPONENT,THE INSTALLATION SHALL BE INSPECTED BY THE ENGINEER AND COUNTY. CONTRACTOR SHALL ENSURE THE TANK(S)IS/ARE FILLED WITH WATER AND ALL DETAILS IN THE DESIGN COMPLETED PRIOR TO SCHEDULING INSPECTION,OTHERWISE ADDITIONAL INSPECTION FEES MAY APPLY. ADVANCE NOTICE IS REQUIRED FOR INSPECTION. • DRAINAGE-ALL FOOTING,ROOF AND STORM DRAIN DISCHARGES SHALL BE DIVERTED AWAY FROM THE GRAINFIELD AND TANK AREAS. APPROVED SEP 0 7 20P3 MASON COUNTY ENVIRO ELYCHARO NM ENTAL HEALTI' 2P��diTAg4.�*Cry( DJA � y s ST. EVERGREEN SEPTIC DESIGN INC. GENERAL NOTES 43 PH:(360)687-9919 - EMAIL:INFO@EGSD.COM PIONEER SCHOOL DISTRICT �vTg'QZON"V'>SA'TLB�•£��'� o.*e. oeTE'. REVRIp�. 6/16/2023 23040 S EVERGREEN SEPTC DESIGN OPERATIONS. MONITORING AND MAINTENANCE The owner of this system is responsible for continuous operations and maintenance(O&M). EGSD recommends inspections and required maintenance be done by qualified professionals. This system was designed for 450 GPO(30 administrative staff maximum). If timer controls are built into the system,they maybe set for the surge flow volumes. It is the owners responsibility to assure the average operating capacities are not exceeded. The flows assume a waste strength typical for a residence including septic tank effluent: CBODs <125 mg/L,TSS<80mg/L,O&G<20 mg/L,and a pH between 6.0 and 9.0. Regular lab testing of your septic tank effluent may be required to ensure the waste strength requirements are met. If the average waste flow or waste strength is exceeded,this system WILL FAIL prematurely. Other operations and maintenance activities will help lengthen the life of your system and help(but not prevent)premature failure. Please note the following: • Any repairs,alterations or expansion of your septic system requires a permit from the Health Officer. • A complete evaluation of the system shall be required by a licensed 0&M specialist as follows: o Once every year(12 months) unless more frequent inspections are required. If any repairs or regular maintenance is needed,the owner is required to ensure it is completed. • A licensed septic pumper shall be hired to remove septage when the scum and/or solids levels in the tank is necessary(O&M evaluation required above will determine if pumping is necessary) • The disposal component(drainfield)and reserve area and all other components shall be protected from: cover by impervious material (roads, buildings, etc),surface drainage flowing across them,soil compaction (vehicles,equipment or livestock)and damage from soil removal or grade alteration. • Any suspected system failure or actual failure should be reported to the local Health Dept. • At the time of property transfer,maintenance records,this design package(including the septic design and this O&M document)and any O&M contracts should be provided to the new owner. • The effluent filter on the outlet side of the septic tank should be removed and rinsed with a hose every six months. Failure to do so may cause sewage backup into the house or onto the ground. • Plantings on drainfields should be limited to ground cover or grass. Roots from trees,shrubs,etc can be detrimental and cause pre-mature system failure. • The area around the septic system components should be inspected for erosion each spring and repaired as necessary. • Under NO circumstances should anyone enter a septic tank. Poisonous gases,contaminants, lack of oxygen may and potential tank collapse may cause serious injury or death. • Toxic substances(i.e.paint,paint thinner,oils pesticides and solvents)should NEVER be dumped into the system through sinks,toilets or otherwise. • Unwanted or outdated medications should not be disposed into a septic system. They may cause pre- mature system failure. Ensure they are disposed in a responsible/other approved manner. • Cooking oil,grease,coffee grounds and animal waste entering the septic system should be limited to trace amounts. The less that enters the septic system,the better. • Use of detergent w/bleach, antibacterial products and liquid drain cleaner should be avoided or at least minimized. Use of these products may reduce system life. • Other items to avoid disposing down the drain include:wet wipes,cigarettes, paper towels, newspaper, sanitary napkins,diapers and excessive toilet paper. • Even if the system is sized for a garbage disposal, it should be used sparingly. The fine particle organic matter created can cause premature system failure and increased tank pumping frequency. • Septic tank additives should not be used unless approved by the WA Dept of Health. Some of these products can be detrimental to the life of your system. Page 1 of • A washing machine discharge filter can help reduce buildup of clothing material particles in the septic tank and contaminants in the drainfield, possibly extending the life of the system. • We recommend implementing a water conservation plan. Use low flow shower heads, low volume toilets, spread out washing laundry(or other high volume water uses)throughout the week,etc. • Swimming pool drains,water softener discharges,downspout drains or other water flows should not be diverted into the septic system or on top of the disposal component(drainfield). PERFORMANCE MONITORING Professional performance monitoring and reporting to the County by a licensed operations and maintenance specialist is required by Washington State law. Some items to look for during inspections of this septic system include(but are not limited to): • Tanks—look for problems including, baffling, groundwater intrusion, structural integrity, etc. Clean outlet filter every six months or more often if needed. Check scum and sludge levels and pump if necessary. • Mechanical and/or electrical malfunctions (including switches, alarm, valves and dose volumes/frequency) should be checked yearly. Dose volumes and timer setting should be verified to ensure design volumes are not exceeded. • Flow meter and/or elapsed time meters/dose counters shall be read and recorded. Calculate the average flows based on previous readings to ensure design flows are not being exceeded. If design flows are being exceeded, corrective action shall be taken immediately. • Check disposal component for ponding, surfacing effluent, appropriate vegetation and absence of traffic,structures, impervious surfaces,abnormal settling and erosion. • Check disposal component for orifice plugging and flush/pressure jet on a regular basis. • Check pressurized drainfield pressures(gauges or squirt height) and compare with the as-built. Page 2 of 2 - _ 9 § CA ) | 2 § ) | ' m § \ \ � m � z / 0 ��� \ � 0 \ / f § % m,§ § 2§§ !!] » §! ; �\ / \ �© \ \/ \ | h§ /| s \ { \ E9 - 3 m \ \ i , ^ ` / - - \ -� ! 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