Loading...
HomeMy WebLinkAboutSWG2025-00317 - SWG Application / Design - 8/7/2025 415 N 6TH STREET,SHELTON,WA 98584 al , MASON COUNTY SHELTON:360- - ,EXT 400 BELFAIR:360-275275-44674467,EXT 400 --1' Public Health & Human Services ELMA:360-482-5269,EXT 400 `/'� FAX:360-427-7787 On-Site Sewage System Permit: SWG2025-00317 APPLICANT HAMAR REVOCABLE LIVING TRUST Phone: 360.620.7130 Address: 8740 NW HOLLY RD BREMERTON, WA 98312 OWNER HAMAR REVOCABLE LIVING TRUST Phone: 360.620.7130 Address: 8740 NW HOLLY RD BREMERTON, WA 98312 SEPTIC DESIGNER Mike Staten Phone: Address: 123XXX SHELTON, WA 98584 Site Address: E Olyview pl Primary Parcel Number: 221212190023 Permit Description: new 4br SFR -gravity trench Permit Submitted Date: 08/07/2025 Permit Issued Date: 09109/2025 Issued By: Jeff Wilmoth Current Permit Fees Paid: $555.00 (additional fees may be required upon installation of system). Permit Expiration Date: 09/04/2028 (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/onsiteloss-inspection-request.php or call: 360-427-9670, extension 400. - OFFICIAL USE ONLY--- 3 MASON COUNTY ° ' og - o� - a��5 y AMOUNT RECEIVED: . RECEIVED BY: co cn Public Health & Human Services �jJ� ° u Environmental Health 360-427-9670,ext.400 or 360 275 4467,ext.400 /� Cl, 0) 415 N.6th Street-Shelton,WA 98584 1 SWG 9 ) 6 — � z 6 z ON-SITE SEWAGE SYSTEM APPLICATION r APPLICANT PHONE m m Dana R. Hamar 360 620 7130 z � c MAILING ADDRESS-STREET,CITY,STATE,ZIP CODE ! ' 3 8740 N.W. Holly Rd.Bremerton Wa. 98312 Illn m SITE ADDRESS-STREET,CITY,ZIP CODE CV 22121-21-90023 o N r_ 1,0,..s F' NAME OF DESIGNER PHONE n n l7 C� I N Mike Staten 360 275 9374 NAME OF INSTALLER PHONE <f o I � N/A N/A fl-rul VI PERMIT TYPE(select one) DRINKING WATER SOURCE ,----- I IV W RESIDENTIAL OSS rl COMMUNITY OSS l-1 COMMERCIAL OSS fl PRIVATE INDIVIDUAL WELL 0 PRIVATE TWO-PARTY WELL Z TYPE OF WORK(select one) 2 PUBLIC WATER SYSTEM GrouP B +PI NEW CONSTRUCTION I UPGRADES rl REPAIR!REPLACEMENT OTHER DETAILS(se/act ell that apply) 0 TABLE X REPAIR I N SUBMITTALS 0 SURFACING SEWAGE 0 EXISTING FAILURE 0 SHORELINE 03 0 DESIGN FORM(REQUIRED) ✓❑SEPTIC DESIGN(REQUIRED) BEDROOMS LOT SIZE WAS LOT CREATED AFTER4/1/2025T r0 I El WAIVER(S)(IF APPLICABLE) 4 2.1 DYES ONO C) I n DIRECTIONS TO SITE AND SITE CONDITIONS:(ex.locked gate) From Shelton - N on 3 - Left on Anthony - Left on Centerline -Left on E. Olyview PI. -Vacant I I o lot is on the left across from 60 E. Olyview PI. - Older split level house. - Soil logs are located behind bull dozer. - easy access. p I o IN SITE MUST BE FLAGGED FROM MAIN ROAD AND TEST HOLES MUST BE FLAGGED WTTH TEST HOLE NUMBERS I W -- — OFFICIAL USE ONLY BELOW'MIS LINE - ,UPGRADEIFAILLIRE SOURCE(tor reporting purposes) ci VOLUNTARY 0 MAINTENANCE/PUMPING ❑BUILDING PERMIT ❑HOME SALE ❑COMPLAINT ❑OTHER: INSPECTOR SOIL LOOS COMMENTS!CONDITIONS l , 6, 5 Ak< 0 (--5 SOIL CODES: RECORD DRAWING AND INSTALLATION REPORT V e VERY G=GRAVELLY S=SAND L=LOAM SI=SILT C=CLAY E=EXTREMELY R=ROOTS REQUIRED FOR FINAL APPROVAL. INSP CTOR SIGNATURE DATE APPLICATION EXPIRATION DATE TIO APPROVED!ISSUED BY DATE L., °I\ILkij4 q-'1-26. 6/- Y-).-cC. Ld i\\ii• - q-1-4 TH AY BE SCANNED AND AVAILABLE FOR PUBLIC VIEW ON THE MASON COUNTY WEBSITE Revised:6/3/2025 DESIGN FORM-PAGE ONE Assessor's Parcel Number: 2 2 1 2 1 — 2 1 — 9 0 0 2 3 A design will be reviewed when 3 copies of each of the following are submitted: "Completed design form that has been signed and dated. v Scaled layout sketch,including all applicable items on checklist 'd 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 public view on the Mason County Web site.Maximum paper size: 11"X 17" PARCEL IDENTIFICATION Permit Number: SWG tQ_1-CX5 11 Designer's Name: Envirotech Engineering PLLC Applicant's Name: Dana Hamar Designer's Phone Number: (360)275-9374 Mailing Address: 8740 NW Holy Road Designer's Address: PO Box 984 Bremerton WA 98312 Belfair WA 98528 City State Zip City State Zip DESIGN PARAMETERS Treatment Device ❑ Glendon Biotilter 0 Sand Filter ❑Mound 0 Sand Lined Draintield 0 Recirculating Filter,Type: ❑Aerobic Unit Make/Model 0 Disinfection Unit Make/Model Other: Drainfield Type [Gravity 0 Pressure cif Trench 0 Bed 0 Sub Surface Drip Septic Tank/Drainfield Specifications Laterals Number of Bedrooms 4 Schedule/Class ASTM 2729 Daily Flow:Operating Capacity 360 gpd Length 55 ft Daily Flow: Design Flow 480 gpd Diameter 4 in Septic Tank Capacity J N 1200 gal Number 4 Receiving Soil Type(1- 0 3-4 Separation 10 ft Receiving Soil Appl.Rate tip1 0.74 gpd/ft2 Orifices Required Primary Area 649 ft2 Total Number of Orifices -pre perforated- Designed Primary Area 660 ft2 Diameter - in Designed Reserve Area 660 ft2 Spacing - in Trench/Bed Width 3 ft Manifold Trench/Bed Length 220 ft Schedule/Class -D-box Elevation Measurements Length - ft Original Drainfield Area Slope 2 % Diameter - in New Slope,If Altered Not Altered % Preferred manifold configuration used? 0 Yes fir No Depth of Excavation Up-slope 24 in Transport Pipe from Original Grade Down_slope 24 in Schedule/Class ASTM 3034 Designed Vertical Separation 36+ in Length 40 ft Gravelless Chambers Required? 0 Yes 0 No fif Optional Diameter 4 in Pump Required? 0 Yes 56 No Dosing and Pump Chamber Pump/Siphon Specifications Number of doses/day n/a Difference in Elevation Between Pump Shutoff and Uppermost Dose quantity n/a gal Orifice "`" ft Chamber Capacity n/a gal Uppermost Orifice 0 Higher 0 Lower than Pump Shutoff Pump controls: Please check those required. Capacity @ Total Pressure Head n/a gpm ❑Timer ❑Elapse Meter 0 Event Counter Calculated Total Pressure Head n/a ft If Tinier: Pump on - ,Pump off - Comments This Septic Design was previously approved. No changes made to this de n.p P R 0 V E lli MASON COUNTY ENVIRONMENTAL HEALTIr JBW DESIGN FORM—PAGE TWO Assessor's Parcel Number: 2 2 1 2 1 -- 2 1 -- 9 0 0 2 3 Permit Number: SWG Q02,5 —60 311 DESIGN CHECKLISTS Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch IA Test hole locations PI Drainfield orientation and layout Reference depth from original grade: Soil logs 0 Trench/bed dimensions and RI Septic tank Pi Property lines critical distances within layout l21 Drainfield cover Eg Existing and proposed wells lif D-BoxNalve box locations Reference depth from original grade within 100 ft of property lid Septic tank/pump chamber and restrictive strata: Measurements to cuts,banks,and locations fa Laterals,trench/bed,top and surface water and critical areas 0 Observation port location bottom Pi Location and orientation of 12l Clean-out location 0 Curtain drain collector curtain drain and all absorption 0 Manifold placement 0 Sand augmentation components 171 Orifice placement Other cross-section detail: 6d Location and dimension of RI Lateral placement with distance g Observation ports/clean-outs primary system and reserve area to edge of bed g Other Information Eg Buildings 0 Audible/visual alarm referenced Yes No Direction of slope indicator RI Scale of drawing shown on scale ❑ RI Design staked out O Waterlines 0 Iii Recorded Notices attached g Roads,easements,driveways, PPROVE ❑ [I Waiver(s)attached parking D ❑ i 'Pump curve attached RI North arrow and scale drawing SEP 0 9 2025 ❑ 6f Evaluation of failure shown on scale bar MASON COUNTY ENVIRONMENTAL HEALTH Non-residential justification ❑ RI Waste strength J13W 0 CI Flow DESIGN APPROVAL The undersigned designer must be notified by installer at time of installation RI Yes [ \\` , i,,,, ` 7/29/25 ; `';.' Signature of Designer Date S ' t'`. The undersigned has reviewed this d on behalf of Mason County Public Health and 'G, tYfe 3w5:,,'\,z" compliance with state and local on-site . lations: %)/,,,„, 'k Witt 6/_9_,c- Envi n it P' Health Specialist Date CAUTION: DESIGN APPRO AL 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 (10).' SCALE. 1 INCH = 60 FEET ___.1.S to / k N i 357 FT t / 20FT ALL WATER LINES TO / / 25FT -I I BE ENCASED WITHIN 10 '— •%�TP2 FT OF SEWER LINES / / �`�� DISTRIBU/IION BOX / / 4' ASTM1 3034 PROPOSED PRIMARY AND P1 OR BETTER SOLID / / RESERVE SEPTIC TRANSPAORT PIPE DRAINFIELD AREA (SEE FROM SEPTIC TANK / / DRAINFIELD DETAILS) 40FT± is - PROPOSED 1200 / GAL SEPTIC TANK ( I PROPOSED 11—_ CLEANOUT PROPOSED 4BD BUILDING I I FOOTPRINT +I I I PROP°SeD DRIVe o Cr) Co o r In v r I I I i I I PROPERTY LINE EASEMENT LINEN 306 FT �: , I, V E 0 : pip SEP 0 9 2025 TY ENVIRONMENTAL HEALTH MASON COUN SOIL LOGS J BW Tel (0-75') MEDIUM SAND, TYPE 3 TP2 (0-40•) GRAVELLY HEDIU(SAND, TYPE 3 PROJECT/ OWNER/ LOCATION, (40-64') SANDY LOAM, TYPE 4 ��� CO/�j. S• . SEPTIC SYSTEM DESIGN '�� .\ `\1.\// , 11 : — /I± i. DANA HAMAR �� , / `I, LOT 4, OLYVIEW PLACE 3 541 Aor. PARCEL NO, 22121 21 90023 > /,� MASON COUNTY, WASHINGTON I /aTES, r DESIGNER. ENVIROTECH ENGINEERING 1)THERE ARE NO EXISTING OR PROPOSED WELLS r k 43041 �� PO BOX 984 WITHIN MO FEET OF THE PROPERTY LINES. % �I I`I 1�\ HELFAIR, WASHINGTON 98529 2) THERE ARE NO CRITICAL CUTS, EI®ANKNENTS, SLOPES VITHIN 300 FEET OF THE �•S. 5S•/( \'V` 7/19/?5 360-275-9374 3) THERE ARE NO SURFACE WATERS VITHIN 300 ` �� FEET If THE PROPERTY LINES. PLOT PLAN q \9R1\ ) \)/{\\ « Rri�)$ Q2209 \k§§�§ t=m\\� < § <q rz \-) � \_« - k §§ �� \ r.I co g§P jr � f §[ �) 2 / .11,1,-,-NNI z '$ A-@ C1e I 3,d ��( }q $ fL 7 l \ ? ) & b \ § ] mr" 2 § §g , k / j ] X 8 j / " \\N\\\\\\\\\\\\\' N [ k § + j jjTi { 9 =wn )mwa X -oG «R-1§ \�z \�k9\\) z]�& /\ 2� I \\ §) \ VI ]n §=z 7.3 \) )R7] �Ew -17 In u �.92 k i>\ IzI �� �� ] , cc_g — k R /\/ �r 1.1 n Ea22 : '1 cr) ° m• < d . �§i@Q 7m32¥ §aE2 2 @;mR m$n`" z7� m § 0*\ ®(3m / I �n§ gzr$ q ) /�� \ 2§k / A<CO0 fm%2 e c •/ . % » �� e �5 z �§) y § / , A 1 - . 9 / ° <@< a § � _/ a -1 7 33( f� y : k } ) km� \ \ j � • © \ / ]) I El .� � /& e \` > q mI, AP S[P 0 § 2�§ / \ , ` ~ r. , MASON COUNTY ENVIRONMENTAL HEM. JBW • H DA1......--- -4, ---..-1 -1 '2, h- 5 ti -- , w en O O �O O Aa _ �El C / 1 I I I 171), N t1 tel I I my� I I �_ _ CO a i i m I I z C7 _ 71 •••:44:.•. -IA m a 0 I I o � _ c '..r o r a 7 bZ ****1 , ,r . Z I I I I y - r .T. z y ••••• •••• D A '*i U 1 •••••••11� ~ < I A� I I I a - Ze ND ki [17 mD Z -' - Nam- NA ki e I Di DA ^ I - 0� )D LI tDtqq �.yX S IV d < •23 pG A DcyA I �P IrAi I = �7m ' `��°� z Z = rri n .D.yCZZC77 i77 Z �� m2A I EA I mm I F I torn ❑ mmD r 4` C m c A r ^ '1 0 o y m I a v� I m�1\ a IN + A� P I I < I I DD D rm mp r I I I (Dcl1 >A e b CI 0. rn I y I a I I. P I $ m� I I I , oe m a . r �Ac I x yr I �i I �. — �m A z °:,, c rr- a v N a r \ • • V; C to •'1� '1 A rda x ': D z r -' and � 0n r- , = m Z• cs.\,,,, ...77//) = D •i m0 ❑ • Cl N m O A :y - r� ••••:• 1• r W rvm,y Z 13 wrw m 2mpr� mg O - m •••••1 ►:.'Y.•'t. 0.m❑Zm as OD A o•• hY-444 "'I ti - Nay •••••/ '• or y oA-12 p 01Z N NL -I XI - D •• •• • . ND 2tnaD (/I ypm m0 _ •••••0 1•.:i� <r. it d AXO mr. D tro 1 O=d<- S2 9 n - y ::•�•. : :. . �i D wLmn2 sari _ z�r�A \o imz^D�m ��, _ H :,:•io i is`• `.' X. • t� C.,. _.ti Z A2 -I ru N<r� n = A\ 1�L �mZ mmrn 7 rn - •:ffi ►: ;;`:.::' '.... -I 11 z CI m �� 1( �• �j L "61D *or*, f D D 4. m r a ill Dcm - .1.46.1.O ♦ vn cl m is • 1 t. C czir^ �(1 a � '` F J!, r.P. p1�Zm-Dim — + •�Et. ••....:: . p: y C 2 -1 N -1 - 1 p n C r 70 z vmi d !i •! ,� .. ...ill M Iri VI-) _ GI APPROY .0. ..._ .. 71 m SEP 0 9 2025 • MASON COUNTY ENVIRONMENTAL HEALTi- ■oIA/ NOTES FOR ❑N-SITE SEWAGE GRAVITY DISTRIBUTI❑N SYSTEM SEPTIC TANK 1, PUMP AND PUMP CHAMBER IS NUT EXPECTED FOR THIS SITE, IF EFFLUENT PUMPING IS REQUIRED, THEN ALL PUMP CHAMBER COMPONENTS AND ACCESSORIES RELATING TO EFFLUENT PUMPING MUST BE INSTALLED PER WASHINGTON STATE AND/ OR PREVAILING COUNTY REQUIREMENTS. 2, SEPTIC TANK SHALL ADHERE TO THE GENERAL SEPTIC TANK DETAILS OF THIS DESIGN, AND SPECIFIC REQUIREMENTS OF THE PREVAILING HEALTH OFFICIAL, TRENCH 1, EXCAVATE TRENCHES ALONG THE CONTOUR OF THE EXISTING GRADE. 2. TRENCHES SHALL BE EXCAVATED SO THAT THE TRENCH BOTTOM IS LEVEL, ±0.5 INCHES, 3. INSTALL OBSERVATION PORTS AS SHOWN IN THE DRAINFIELD DETAILS. 4. THE BOTTOM AND SIDES OF ALL TRENCHES MUST NOT BE SMEARED. INSTALL DRAINFIELD DURING DRY WEATHER. ANY SOIL SMEARING MUST BE REMOVED WITH HAND TOOLS, DRAINFIELD LATERALS AND TRANSPORT LINES 1. INSTALL LATERALS PARALLEL TO THE NATURAL GROUND CONTOUR. 2. PLACE LOCATOR TAPE ABOVE ALL LATERALS. 3. INSTALL CLEAN-OUT PORTS AT ALL DISTAL ENDS OF THE DRAINFIELD. SEE THE DRAINFIELD DETAILS. 4. TRANSPORT LINES BENEATH DRIVEWAYS OR OTHER TRAVELLED WAYS SHALL BE ENCASED. FILTER FABRIC 1. PLACE FILTER FABRIC OVER DRAIN ROCK PRIOR TO BACKFILL, 2. FILTER FABRIC SHALL CONFORM TO THE FOLLOWING SPECIFICATIONS, AND AT LEAST MEET WASHINGTON STATE AND/ DR COUNTY STANDARDS, PROPERTY REQUIREMENT TEST METHOD GRAB STRENGTH 80 LBS ASTM D4632 PUNCTURE STRENGTH 25 LBS ASTM D4833 TRAPEZOID TEAR 25 LBS ASTM D4533 APPARENT OPENING ADS < 0.297 mm, OR *50 US STANDARD SIEVE ASTM D4751 SIZE > *50 US STANDARD SEIVE PERMEABILITY 0.4 CM/SEC FOR SOIL TYPES 1 AND 2 ASTM D4491 0.004 CM/SEC FOR SOIL TYPES 2, 3, 4, 5 AND 6 DISTRIBUTION BOX 1. ALL OUTLETS SHALL BE UNOBSTRUCTED AND VIEWABLE WITHIN THE DISTRIBUTION BOX. 2, FOR INSTANCES WHEN THE OUTLET IS LOCATED DIRECTLY ACROSS FROM THE INLET, THE INLET MUST BE DIVERTED DOWNWARD IN ORDER TO PREVENT SHORT-CIRCUTING EFFLUENT ACROSS THE DISTRIBUTION BOX. 3. PLACE LOCATOR TAPE, OR EQUIVALENT, DIRECTLY ABOVE THE DISTRIBUTION BOX. INSPECTION AND MAINTENANCE 1. ON-SITE SEWAGE SYSTEM SHALL BE PUMPED OR INSPECTED EVERY 3 YEARS. 2. THE EFFLUENT FILTER SHALL BE CLEANED ONCE PER YEAR. THE USE OF GARBAGE DISPOSALS SHALL WARRANT MORE FREQUENT CLEANING. MISCELLANEOUS 1. ENCASE ALL WATER LINES WITHIN 10 FEET OF SEPTIC AND DRAINFIELD AREAS. 2. STORMWATER RUNOFF SHALL BE DIVERTED AWAY FROM THE SEPTIC AND DRAINFIELD SYSTEM. 3. CURTAIN DRAINS SHALL NOT BE PERMITTED WITHIN 10 FEET UPSLOPE AND 30 FEET DOWNSLOPE FROM THE EDGE OF THE DRAINFIELD AND DRAINFIELD RESERVE AREA. 4, ALL MANHOLE LIDS AND PORTS FOR ACCESS, SAMPLING OR INSPECTION MUST HAVE LOCKING COVERS, 5. INSTALL ALL TANKS, CHAMBERS AND BOXES ON FIRM, INDISTURBED NATIVE SOIL OR RE-COMPACTED NATIVE OR FILL SOILS. 6, A SURVEY WAS NOT PERFORMED BY THE SEPTIC DESIGNER. IT IS THE OWNER/ CONTRACTORS' RESPONSIBILITY TO LOCATE ALL PROPERTY LINES, AND CONSTRUCT THE SEPTIC SYSTEM BEYOND PROPERTY LINE, WATER LINES, WELLS AND BUILDING MINIMUM SETBACKS THAT ARE REQUIRED IN WASHINGTON STATE AND/ OR COUNTY REQUIREMENTS, 7. ALL SEPTIC SYSTEM COMPONENTS, MATERIALS AND WORKMANSHIP MUST MEET OR EXCEED WASHINGTON STATE AND/ OR COUNTY REQUIREMENTS. 8, DEVIATION FROM THIS DESIGN WITHOUT PRIOR WRITTEN APPROVAL FROM THE SEPTIC DESIGNER AND THE COUNTY HEALTH DEPARTMENT WILL INVALIDATE THIS ON-SITE SEWAGE DESIGN SYSTEM. 9. SOIL CONDITIONS MAY BE DIFFERENT, SUCH AS DIFFERING VERTICAL SEPARATIONS OR CHANGE IN SOIL TEXTURE, WITHIN THE SUBGRADE IMMEDIATELY SURROUNDING THE EXCAVATED TEST PITS. THIS COULD EFFECT THE DESIGN AND OPERATION OF THE ON-SITE SEWAGE SYSTEM. ENVIROTECH SHOULD BE NOTIFIED TO RE-EVALUATE THIS DESIGN, IF SIGNIFICANT SOIL CHANGES OCCUR. 70SIGN SOIL 70% TYPE 3 30% TYPE 4 AP WEIGHTED APPLICATION RATE 2025 070(0.8)+0,30(0.6) = 0.74 g/sf/day PROJECT/ OWNER/ LOCATION DESIGN FLOW MASON COUNTY ENVIRONMENTAL HEAL ��IN SEPTIC SYSTEM DESIGN ASSUME 1209nVpedroom/dny, CRITERIA' 4 BEDROOMS DAN HAMAR (120ga1)(4 bedrooms) = 480 gpd NL CL1'Dt LOT 4, OLYVIEW PLACE .•�� ,, sr.� PARCEL NO. 22121 21 90023 DRAINFIELD AREA ``� -`i`Y )��t�_ % MASON COUNTY, WASHINGTON A = <DESIGN FLOW/ APPLICATION RATE) = (480 gpd/ 0.74 <gpd/ft)'2) = 649 sf ♦ — A"'/f r DESIGNER' USE 660 sf ENVIROTECH ENGINEERING PO BOX 984 FOR 3 FT WIDE TRENCHJ (660sf/ 3ft) = 220 LINEAR FEET " 43045 .Z BELFAIR, WASHINGTON 9852E 'v360-275-9374 FOR 4 LATERALSI <220 If/ 4 laterals) = 55 FT PER LATER `t,�t� 7/ 1s DESIGN NOTES