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HomeMy WebLinkAboutSWG2025-00230 - SWG Application / Design - 6/17/2025 r1g,1MASON COUNTY415 N 6TH STREET,SHELT ,E 400 98SHELTON:360 427-9679670 EXT 400BELFAIR:360-275-4467,EXT 400 Public Health & Human Services ELMA:360-482-5269,EXT 400 FAX:360-427-7787 On-Site Sewage System Permit: SWG2025-00230 APPLICANT YOUNGQUIST CATHRINE Phone: Address: 601 E OLYMPIC VISTA DR UNION, WA 98592 OWNER YOUNGQUIST CATHRINE Phone: Address: 601 E OLYMPIC VISTA DR UNION, WA 98592 SEPTIC INSTALLER JOE FASSIO* Phone: 360-898-7286 Address: 170 E SPRUCE ST UNION, WA 98592 SEWAGE DESIGNER PAULA JOHNSON* Phone: 360-898-2255 Address: 171 E VUECREST DRIVE UNION, WA 98592 Site Address: 50 E Mount Ellinor Ct Primary Parcel Number: 322345100006 Permit Description: New 2-bedroom SFR pressure system with local waiver WAI2025- 00045 Permit Submitted Date: 06/17/2025 Permit Issued Date: 07/14/2025 Issued By: David Anderson Current Permit Fees Paid: $555.00 (additional fees may be required upon installation of system). Permit Expiration Date: 06/30/2028 (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 No foundation drains are allowed within 10 ft up gradient of the drain fields. 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 ra. MASON COUNTY DATDMERECE " ao is cn D 1 RECEIVED CO m ---- Public Health & Human Services co`S`J ; < N Environmental Health 360-427-9670,ext.400 or 360 27i 4467,ext.400 S W G ^ ^'5 /L 5_ ❑ 415 N.6th Street- Shehon,WA 98584 C_�)O C^�) - 00 Q 3!`11 ❑ 77 Z Cn ON-SITE SEWAGE SYSTEM APPLICATION r. APPLiC;.N' I a-ONE r 253 273-6586 _ o z Catherine Youngquist ) c MAILING ADDRESS-STREET,CITY,STATE,ZIP CODE WA 98592 3 601 E Olympic Vista Dr Union .CS X Oi SITE ADDRESS-STREET.50 E Mount Ellinor Ct < CITY.ZIP CODE Union WA 98592 < �' c� NAME OF DESIGNER PHONE E I fV Arrow Septic Designs, Inc (360) 898-2255 N NAME OF INSTALLER PHONE Joe Fassio Excavating (360)898-7286 Z I w PERMIT TYPE(select one) ���� DRINKING WATER SOURCE 5 KRESIDENTIAL OSS LA3COMMUNITY OSS E COMMERCIAL OSS E PRIVATE INDIVIDUAL WELL I]:PRIVATE TWO-PARTY WELL Z I 7 PUBLIC WATER SYSTEM I TYPE OF WORK(select one) iif NEW CONSTRUCTION/UPGRADES E REPAIR/REPLACEMENT OTHER DETAILS(select all that apply) 0 TABLE X REPAIR � ❑ SURFACING SEWAGE 0 EXISTING FAILURE 0 SHORELINE W 5 SUBMTITTALS r DESIGN FORM(REQUIRED) lif SEPTIC DESIGN(REQUIRED) BEDROOMS LOT SIZE WAS LOT CREATED AFTER 4/12025? 0 gr WAI VER(S)(IF APPLICABLE) 2 BR .28 ac 0 YES p NO 0 DIRECTIONS TO SITE AND SITE CONDITIONS'(et locked gate) Head east on W Alder St toward N 6th St and take the 3rd exit at the traffic circle. Slight (R) I o onto E McReavy Rd. Turn (R) onto E Dalby Rd. Turn (R) onto WA-106 E. Sharp (R) onto E r 10 Olympic Vista Dr. Turn (L) onto Mt Ellinor Ct. Destination on (R).Yellow sign: "Youngquist" o 0 rn SITE MUST BE FLAGGED FROM MAIN ROAD AND TEST HOLES MUST BE FLAGGED WITH TEST HOLE NUMBERS. I 0) OFFICIAL USE ONLY BELOW THIS LINE UPGRADE I FAILURE SOURCE(to(reporting porposes) 0 VOLUNTARY ❑MAINTENANCE/PUMPING ❑BUILDING PERMIT 0 HOME SALE 0 COMPLAINT 0 OTHER. INSPECTOR SOIL L_QGS �� p ���� S f j COMMENTS/CONDITIONS 7t11:0 -3 cd /l l 3S-G�l ' e‘iCogS fa bit/0 1 ((,IPe 0) -(J '/ it NZ-U -?fr u<i 1.pW 35-67' v(1 mrI S to bollotn wv. C.,r,SOIL= CODES: RECORD DRAMNGAND INSTALLATION REPORT 111 VVERY G=GRAVELLY S=SAND l=LOAM Si=SILT C=CLAY E=EXTREMELY R=ROOTS REQUIRED FOR FINAL APPROVAL !NSPEC R SIGNATURE DATE APPLICATION EXPIRATION DATE APPLICA APPROVED!ISSUED BY DATE 61 01 ?NT 688ot? 7i I 70/zazr T IS FORM MAY BE SCANNED AND AVAILABLE FOR PUBLIC VIEW ON THE MASON COUNTY WEBSITE Revised:4/14/2025 EIit,v(,l-oteckt E wg 1,weer,wg 4e.ote.cNwicRi.°emvin.A.os.ewtAL.°Drainage°Roaclwat� November 4. 2024 Katy Youngquist RE: Geotechnical Evaluation of On-Site Septic System 50 ML Ellinore Court,Union,Washington. To Whom It May Concern, Envirotech Engineering (Envirotech) completed a site visit on October 31, 2024 to the property in order to observe surface and subsurface conditions.This geotechnical evaluation addresses the proposed on-site septic system with relation to landslide hazards on and near the property. Information collected from site observations and field testing was completed by Michael Staten with Envirotech. Subsurface conditions were visually classified as a shallow 3-foot to 3.5-foot layer of silty sand with gravel (SM) overlying cemented glacial till soils. The septic drainfield area is moderately sloping with grades of less than 30%. Critical descending slopes exceeding 40% were observed beyond the property and neighboring development. It is our opinion that the proposed septic system will not influence the moderate slopes on the property or the nearby critical descending slopes off the property. For septic design and construction that conforms to State and County requirements, Envirotech would not provide any geotechnical restrictions for this project. If you have any questions or need any further assistance,please contact Michael Staten at 360-275-9374. Sincerely. Envirotech Engineering 0, CLYDE. , 4`Z` O* 4 r Cs • ,P 43045 p' cc,s s� `ts 4.4.s10\ALF�v 11/4/24 Michael Staten, P.E. Project Director 'PO Isox 324 'ut'a%'r, wash(.v4.0tcw.9e520 c'f: 360-275-6)373 C ttt: ^-C 82-&0.4 5 dommil DESIGN FORM—PAGE ONE Assessor's Parcel Number: 3 2 2 3 4 — 5 1 — 0 0 0 0 6 A design will be reviewed when 3 copies of each of the following are submitted: 'd Completed design form that has been signed and dated. Scaled layout sketch,including all applicable items on checklist. 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" :41kAigia: . ,..,, . .:,E if,PARCEL IDENTIFICATION Permit Number: SWG QCQS al:)a3 6_ Designer's Name: Arrow Septic Designs, Inc _. Applicant's Name: Catherine Youngquist Designer's Phone Number: (360)898-2255 0 Mailing Address: 601 E Olympic Vista Dr Designer's Address: 171 E Vuecrest Dr WA 98592 Union WA 98592 City State Zip Union, ---- City State Zip Designer's Email Paula 1@hctc.com __ DESIGN PARAMETERS Treatment Device ❑Glendon 0 Sand Filter 0 Mound 0 Sand Lined Drainfield 0 Recirculating Filter 0 ATU LI Other Treatment Level(check all that apply): D A ❑B p C 0 BLI ❑BL2 ❑BL3 El E ❑N Drainfield Type 0 Gravity RS Pressure 121Trench 0 Bed 0 Sub Surface Drip Septic Tank/Drainfield Specifications Laterals Number of Bedrooms 2 c Schedule/Class 40 Daily Flow:Operating Capacity 180 gpd Length 33.5 ft Daily Flow:Design Flow 240 • gpd Diameter 1.25 in Septic Tank Capacity(working) 1,000 ` gal Number 3 Receiving Soil Type(1-6) 3 Separation 5 ft Receiving Soil Appl.Rate 0.8 gpd/ft2 Orifices Required Primary Area 300 • ft2 Total Number of Orifices 21 Designed Primary Area 301.5 ft2 Diameter 3/16 in Designed Reserve Area 301.5 ft2 Spacing 60 in Trench/Bed Width 3 ft Manifold Trench/Bed Length 100.5 ft Schedule/Class 40 Elevation Measurements Length header ft Original Drainfield Area Slope 12 • % Diameter 1.25 in New Slope,If Altered 12 , % Preferred manifold configuration used? gYes 0 No Depth of Excavation Up-slope 10 in Transport Pipe from Original Grade Doµan_slope 6 in Schedule/Class 40 Designed Vertical Separation 24+ in Length 40 ft Gravel-based Drainfield Required? 0 Yes te No Diameter 2 in Pump Required? fid Yes 0 No Dosing and Pump Chamber Pump/Siphon Specifications Number of doses/day 4 Diff.in Elevation Between Pump&Uppermost Orifice 5 ft Dose quantity 60 gal Drainfield Squirt Height/Selected Residual(head) 2 ft Chamber Capacity(flood) 1,000 gal Uppermost Orifice Fe Higher 0 Lower than Pump Shutoff Pump controls:Please check those required. Capacity @ Total Pressure Head 12.39 gpm , if Timer 0 Elapse Meter El./Event Counter Calculated Total Pressure Head 7.47 ft If Timer: Pump on 2 minutes ,Pump off 6 hours Comments 1 t Revised:4/14/2025 DESIGN FORM—PAGE TWO Assessor's Parcel Number:3 2 2 3 4 — 5 1 -- 0 0 0 0 6 Permit Number: SWG DESIGN CHECKLISTS Scaled Plot Plan Scaled Layout Sketch Cross-Section Sketch El Test hole locations 6iS Drainfield orientation and layout Reference depth from original grade: g Soil logs Bi Trench/bed dimensions and Eg 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 g Septic tank/pump chamber and restrictive strata: ❑ Measurements to cuts,banks,and locations g Laterals,trench/bed,top and surface water and critical areas 62( Observation port location bottom ❑ Location and orientation of lil Clean-out location 0 Curtain drain collector curtain drain and all absorption g Manifold placement 0 Sand augmentation components RI Orifice placement Other cross-section detail: g Location and dimension of primary system and reserve area g Lateral placement with distance Observation ports/clean-outs to edge of bed Other Information 0 Buildings g Audible/visual alarm referenced Yes No 0 Direction of slope indicator Cd Scale of drawingshown on scale Waterlines g 0 Design staked out bar 0 i1 Recorded Notices attached g Roads,easements,driveways, p Elevation benchmark and relative i 0 Waiver(s)attached parking elevations of system components lif ❑ Pump curve attached g North arrow and scale drawing 0 Evaluation of failure shown on scale bar l Non-residential justification 0 121 Waste strength '• )j ID rif Flow DES .-APPAL The undersigned designer must be notified by i t • o ' tilation Yes ❑ No Signature 1 iAr0Y JOH � " NSON 't Date ,=' Srb�bE r tv a ./4.'` ;z:, The undersigned has reviewed this design on behaPd`I1�3'b n ,�''"•Ni u y 1 Health and determined it to b in compliance with state and local on-sit egulations: 1 pi _ 7/&���z �9soyc Environmental Health Specialist Date 0��i'F 40 N��O 1f CAUTION: DESIGN APPROVAL IS VALID ONLY UNDER THE FOLLOWING CONDI1�F,y ✓ The design is stamped"Approved"by Mason County Public Health. lq V The Onsite Sewage Permit has not expired,the Permit Expiration Date is: 6(loPot$ yFq!* ✓ Drainfield site conditions have not been altered to adversely affect conditions of design approval. 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L M ED,0HSSN D Wt-r� SpME Poc �-T5 of GokeAc'TiolJ PLOT PL4N .1.2- : 4 SO" G LS * zo075, SO "*- 1 X'TRE4-L _1.� CPs 4Z‘.1•-)- <y v &&OLST &Rf'ry EI.'--i MEt>ty SAt-n V , --'''4"-)4(..**4„,% 5 U MT ..0 i Nog, c i r OC,�'LOL't ate''�`'�' �;Sid' 'ti v N 6 i� t. 6� a 8 59 2 s, to 0o C-no_Septic Tank a . t 4r , 2-Co�parcment with ;: :Effluent Filter A.cy�' PA.ULA JOY JOHNSON C 0 I000 Criio ?=p C^a be- 1_ lm:iq-slY� c bES1.°NrR... vJ..- . 0.w-k'C_S,P1ro,‘ EXPIRES 6§71.51 >p 3 OS Valve Control Boa (O-((o,c,S p 4'480N ✓o frF f! 0,9UNjl, 1 , o 1"2S F S N` 33.5 Li \ 1 ' 3.3..S4 --4,------18k1i titiA. ite.-4•34-14•Tee4AcA.4.4 \,,,,,, • —r P;c...-A P&H.-- F,eN ,y.et.1 Grade Detailed Qralnfieid L:out Seder t. , ,o. j t F 1 q -n � / Or; (3) " 3,' 1 .25" Sched. 40 -Laterals l3/4' to (((( �.— i 1, ( 1 ) 3/ 16" Orifices � C" O.C. z-t/a' -� 125' it s Q 61' Rock 6• Per Lateral. 1st & Lost Or.fice I hi L 2 i " from End of Trench. 4/ 36 ' ' of 45 Dowse Mew Lateral Drainfield Cross-Section View Not To Scale f Ditch ei- creel o a.,� - cwe+ Out -A Note 0 ' = Observation Port Note Cieor+o�ri b be `roc 0 to 6 axxs odow To Be 4' PVC Pipe from Bottom of Trench r� %�� Removable CAP shall o1 �1 Fnai>e Groda t tc axis with Rfbar. Clem CM Installed n Fled on Grade :!. •4 i V'� End of Each h with Reb lnetd eel an Par Anchor .: .i \ :+' �`. Reo.ked at die On Bottom with Glued-On Tee. ,�,.• a ti;, " of 3 Total Rewired.in System. .1 5 7 00349 ': ; Arrow Sept c QQDesign's '" ' PAULAJOYJOHNSON '� (360) 89V 2255 exPtfa:s ii fo-(to-Z,S 4 Length Length Orifice # Distance from Distance from Lateral# (In.) (Ft.) Spacing Orifices Feeder 2Line(In.) Cleanout21 (In.) 1 402 33.5 60 7 21 21 2 402 33.5 60 7 21 21 3 402 33.5 60 7 Total Lateral Length 100.5 1 I GPM= 12.39 Total#Orifices 21 Dynamic Head Calculations Selected residual pressure: 2 ft. Length(Ft.) #Orifices Transport Pipe 40 21 0.12 ft. Feeder Total Lateral Line Length Lateral#1 33.5 2 35.5 7 0.10 ft. Lateral#2 33.5 7 40.5 7 0.12 ft. •) Lateral#3 33.5 12 45.5 7 0.13 ft. Total Elevation Lift 5.00 ft. AN . } Total Dynamic Head t, 7..0 7.47 ft. �. • .;S . �,of v • Tip ..,Ni..it—` 7'e 5 1 D;.349 `� .Q.: PAULA JOY JCHNSON ' 'c � �rCl=rdsttiri� •i N�a.. EXPIRES 15/ b—CcP2S 'T®r . M?soNC JUL 4 Z `,, °0NryFhfriRo 02S O✓A N-47;4,HZ4z7 H 137, 13�', • Bronze construction available(139 series) 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 � patxoww+cEcuRve performance is critical, this robust <_-_._ MOOrL 137n40n4$ family of pumps is known for reliability, - durability and performance. These l_ n- ., '111111��11•■■ • pumps are especially suited for harsh • ,IIIIIIIMIIIIIII■■■ environments. Zoeter'snt,cool run descoatedtn r ss ■'■■■■::.. C and corrosion-resistant,powder coated -- ?s epoxy finish add up to a long-lasting, ■■„■■■ �7 trouble free product. ` ` '° ,"■■■■■111111 m APPLICATIONS: ■•,, ■■■■:■ C a � • STEP or onsite applications ? ���`���M • Water transfer t° ���,����■ mz • Light commercial dewatering 6 , a .■.■'1,1111111111 '-I SPECIFICATIONS: t • a .■■����"11• i-1/2"NPT discharge < ■■■■.,,,`■■ • HP through 1 HP MA6A U6NI1Y UECUTA ■■.■."■',■ • Available in automatic or nonautomatic 4`ALy'' t ■■■■■®..®® • Model 137.139,140:1/2"(12 mm)spherical solids-n.' ` )ln,3 capacity with vortex impeller �; .s • Model 145:3/4"(19 mm)spherical solids capacity with $ i ��r4.wr_ •,,� vortex impeller MASON co , *: t 151 1 G "ryF�� �S ,JgONMFNTAC cn f PUMP PERFORMANCE CURVE • HFq�T, MODEL 151/152/153 Dose-Mate • . --i This is our fastest growing line of effluent ( 14 153 pumps.The 150 series is truly a workhorse I designed for reliability under extreme . 12- 4° conditions in an effluent environment. - 15o series pump curves cover a wide range - - . to- 35 752 1 of applications. They are welt suited to u 30 a applications with low pressure pipe(LPP) I s- 25 tst and enhanced flow STEP systems.Zoeller's cool run design and corrosion-resistant, 6- 20 powder coated epoxy finish, in addition to the hermetically sealed, oil-filled motor 15 and non-clogging vortex impeller add up to 4_ a long-lasting,trouble-free product. 10 2 0 APPLICATIONS: � s j • STEP or onsite applications — e I MADE A6A E IN TOHE USA 10 20 30 40 50 60 70 80 90 100 • Light commercial dewatering GALLONS LITERS 0 a0 60 120 160 200 240 280 320 360 SPECIFICATIONS: � FLOW PER MINUTE rascz • 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. 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I :6, 4 I NORMAL MIER OFF LEM. 3 i -0-191Zsgiig•FNA—LW-g • , _ 1 • - . 1 ------- • • i t 1 . . .-=-. - ',--,..T.z ...-i .....; Mg RAzikT 1 1.. z az1=S PiAL= . . 4-..,-, iff-N, f ofizur ratag i , i I r---1, , Q•: -• Y. -..(1T*-- . 1 , f : ., I . , _-..-_ IS" ...- --__. ____ E , I • ' - .,...,--2 ,.. - , = •-' 2, - -- •----. =- =.3.eir• --.,. . t 1 - - ) -cs-3-71-iiiimAL- _ t E I Pine!' i ; - W-gradiV 4:51444413 . R 1 I rTYPTCAL3 i c'i i i • i = -,ig ht753/E& i ti I I Seplic Tanks mu. — .-,.meat al-.......n.,÷ards requIred o,./‘..4.-e..'',...'",....--1,2,...,•••r_er-244-. 27.2C - newts 2 • i i . and nr-r%eac....-.a.rer 17:FL:g. _ . _ . •• . - - -r• on•H•t="aeot of',;esi-t..i. Fist of re• ---,...z..rz-•_-.O seAs•ge-i..r.ns..---'-- . _ II - Ii g • . t g 4' ?' '--1 0 f- 8 • ,5.11.4b await Septic 1Desi s, Jric. 4 �o= 4,t INSTALLATION & MAINTENANCE • - 6• (1 .4�', �. Pressure Distribution Systems s,ociaaa �:Q'* P.AULA JOY JOHNSON " : 1. Install Laterals with contour of the ground. l;i�l=Ns>_ btgiGNf_fl. EXPIRES 1 2. Install trench bottoms level. (o—t 9-Lj 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 eft$ bottom extendingto the drainrock/native soil interface. lateral in drainfield with "T"to bottom so Observation Port cannot be easily removed from ground. Install removable cap on top of port at final grade level. ,/U 5. Install drainfield during dry weather and soil conditions; any soil smearing l e eliminated by hand raking. 0, (lea6. Install threaded clean-outs at the end of all laterals (cap must extend to within six inchh0p4,�F�lq of finished grade and be marked with locator tape or rebar). 4 7. Install audio/visual high water level alarm. F40.6, 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.