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Home My WebLink AboutOWTS Design,l 29 CAINS LANF: CARBONDALE, CO 41623 970.309.5259 CARLA, OSTBERG@GMAIL. C()M RECEIVED .liit V S ,{üi:;j ..,îfr,iiFi3,,??#ilJ_i sttl"l'I(' <'( Þ¡¡stt't-'t. Ili(; April27,2022 Project No. C1707 Jimmy T'erui it@tebuilders.net Subsurface lnvestigation and Onsite Wastewater Treatment Systerm Design 3-Bedroom Residence¡ Lot 21-A Grand Hogback Exernption Garfield County, Colomdo Jimmy, CBO lnc. performecl a subsurface investigation and completed ¿rn onsite wastewater treiatment system (OWTS) design for tht¡ subjecl, residence. T'he 109.17-acre property is located outside c¡f Silt, in an area where OWTSs and wells are necessary. Legal Description: Ser:tion:24 Township: 5 lìange: 92 THAT PARCEL OF LAND AS DE:SCRIBED PER RECEPTION NO. 82ç1257, EXCEPT A .896 AC. TRACT OF LANÐ BEING MORE PARI-ICULARLY DESCRIBED AS'EXI{IBIT B" PER BLA AFFIDAVIT REC. NO. 9iI284O & QCD RECEP ION NO. 932842. ALSO A.896 AC. TRA".. Parcel lD: 21 27 -244-00-382 sitTE coNDtTtoNs The property is currently undeveloped. A 3-bedroom residence is proposed. The residence will be served by a well on the property. The well ir¡ located to the southvvest of the proposed residence. The well is located greater than 5O-feet from the proposed septic tank and greater than 1O0-feet from ther proposed soiltreatmr¡nt area (STA). The water line will not comerwithin 10-feet of the proposed septic t¿rnk or 25-feet of the proposed STA. The proposed STA has an approximate ten percent slope to the sr¡uthwest. The proposed area is vegetated with sparse native grasses and tnees. There slrould be no tnaffic or staging of m¡rterial over the future $TA site to avoid compaction of soils priorto construction of the STA. SUBSURFACE The subsurface was investigated on March 2,4,2022 by digging one soil profile test pit excavation (Test Pit) A visual and tactile soil analysis was completed by Carla Ostberg at the time of excavation,1 Only one test pit was excavated due to difficult digging. 1 Carla Ostberg holds a Certificate of Attendance and Examination from the CPOW Visual ¡and Tactile Evaluation of Soils Training. Page 2 Borings were dr¡lled for the purpose of a subsoil study for a found¡¡tion design. A report from Kuman and Associates dated February 1,2022, Project 21-7-925 is enclosed. Elorings extended beyond 2O-feet and soils in both borings w¡re described as sand iand clay, silty, gravelly clay lenses, medium dense, stiff to very stiff, slightly moist to moist, tan. The materials encountered in Test Pit #1 conr;isted of light brown sandy loam with some large (3.O-feet in diameter) rocks to a maximum depth explorerd of 5.S-feet. No bedtock or gtoundwater was encountered. A sample of the soils u¡as taken from Test Pit #1 at2. to 3-feet below grade. Soil structure grade was moderate. The soilformed a ball and a ribbon less than '1-inch in length br¡fore breakinç¡. Soilstructure shape was single-grain to blocky with loos¡e to friable consistence. Soil te¡fure was gritt'y. Some large rocks made digging difficult. Wr¡ are proposing a shallow, prerisure dosed system to minimize excavation. STA sizing is based on SoilType 2, Sandy l-oam with moderate sl.ructure grade. A long term acceptance rate (LT/\R) of 0.6 gallons per square foot will be used to design the STA. tt 1 Area of proposed STF, ;.-.. I Test Pit #1 Í. l¡, +: ,l Sieved siample Ribbon less¡than f -inch Page 3 ìl|?-'.11 , .,ft Backfill Note some large rock Test Pit #1 Design Çalculationsi Average Design Flotry'= 75 GPD x 2 people/bedroom x 3 Bedroonls = 450 GPD LTAR = 0.6 GPD/SF 450 GPD / 0.6 GPD/SF x 1.0 (pressure dosed beds) x 0.7 (GeoMatlM with 6" sand) = 525 liF The OWTS design is based on 3-bedrooms An average daily wastewater flow of 450 GìPD will be used For the purposes of this OWTS design, Benchmark lllevation at grrade 6058' has been erstablished as 100' as the Lower Lev'el of the proposed residence. CBO lnc. shc'uld be notified of any discrepancies or problems with grade erlevations of proposed components during installation of the OWT{i. DESIGN SPECIFICATIONIS Page 4 *lllevations are based upon standard OWTS inr¡tallation practices. Connponent elevations may change during inrstallation due to site cc,nditions. Minimum gm<le refers to piping betw,een components. The 4-inch diameter SDR-35 sewer line exitinrg the residence must have a double'sweep clean out and a minimum 2o/o gradê to the septio tank. The system installation will include a 10O0-gallon, two-compartment lnfiltrator@ poly se¡>tic tank with an Ctrenco@ Biotube Effluernt Filter on the outlet tee followed by a 50O'gallon, single+omparlment lnfiltrator@ poly pump chamber with an Orenco@ ProPak and Onenco@ PF3005 pump. The floats should be set to dose approximately 65 ¡¡allons each pump cl/cle, allowing approximately 3 gallons of drain back after each pump cycle. A pump curve is enclosed. The control panel for the pump must be located udthin line of sight of the septic tank. Wer recomrnend Valley Ftrecast cut of Buena Vista be contracted fcrr start-up of the pumping siystem. Pu Effluent will be pumped through a 1.S-inch diermeter pump line from the pump chamber to an Orenco@ automatic distributing varlve (ADV), model640il. This pump line must have a minimum 1% çlrade for proper drain back into the tank after each pump cycle. The ADV must be placed at a high point in the systern in an irrsulated riserwith access from grade. Screenred rock must be place,C below the ADV to su¡rport the ADV and to assure the clear ¡lipes exiting the ADV remain visible for future inspection and maintenance. Effluent will be pressure dosed through 1.5-inclh diameter distribution lines to two 10' x26.2Ei' beds. A minimum of 6-inches of sand filter material will be installed under GeoMatrM sheets. Sand filter material n¡ust be clean, coarse sand, all passing a scrersn having four meshes to the inch. The sand must have an effective size between 0.15 and 0.60 mm. The uniformity coefficient rnust be 7.0 or less. Material meeting ASTM 33, for concrete sand, with three percent or less fines passing :200 mesh sieve may b,e usêd. A gradation of the sand med¡a rnust be subnritted to this office prior to obtaining the sand. Laterals must be I .5-inches in diameter with 5/32-inch cliameter orífices facing down, spacecl 2-feet on cr-.nter, installed on the GeoMatrM with the filter fabric over the laterals. Laterals should be placed 2-feet from the edges of the bed with 3.0-feet between the outer and middle lateral. Three 39" wide GeoMatrM must be placed on the 1O-foot wide bed. All material as;sociated with the GeoMatru installation must be proprietarv products associated with the GeoMatrM, inctuding orifice shields and geotextile fabric. Nlanufacturer instructlons must be followed regardlng lnstallatlon of the GeoM¿¡trM, CIWTS Gomoonent Minimum Elevation Primary Tank lnlet lnvert Approximate horizontal distance 6,¡' / min 2% fall I min. 16.75" 1äll Automatic Distributing \/alve Approximate horizontal distance 30' / min. 1% rise for drain back / min. 3.75n' rise lnfiltrative Surface Approximate horizontal distance to furthest trench 24' lmin.1%fall / min.3" fall Max = 115.5 gal. (450 GPD x 25o/o + 3 rral drain back) Min. 47 gal. (11 gal x 4) + 3 gal drain back D,ose Range 65 gallons/dose 3 gallons drain lback (30' / 1.5' diameter pump line) Dose SetÍing 500 gallrrn, single-compartmernt lnfiltrator(Ð polv pump chamber 5" on/off float separationFloat Separation 26.4 gallons per nninute (GPM)22.1 feet total clynamic head fiDH) Pump Criteria Page 5 Each 1.S-inch diameter lateral must end in a sweeping ell facing up with a ball valve for flushring. Valves shot¡ld be placed in a 10-inch sprinkler box for a,3cess. L.aterals must be covered by the gray soíl seperration fabric and at least 1-foot of topsoil or olther suitable soil able to support vegetative gncwth. There shall be no cobble-sized (<2.5") or ç¡reater rock in final cover over the GeoMatrM. lnspection ports must be plac,ed at each corner of each bed. Ports may be cut to grade and covered with a valve box for access. COMPON EìIT SPECIFICATIONS The component manufacturers are typical of ap¡rlications used by contractors and engineens in this area. CBO Inc. must approve alternative components prior to installation of the OWTS. Requests must be srubmitted, in writing, to our office for ap,proval prior to instarllation. Component t,schnical data sheerts are available upon request. Construction must be acr:ording to Garfield County On-Site Wastewater'Íreatment System Reç¡ulations, the OV1fl.S Permit provided by Garfield County Building Depafiment, and this design. INSTALLAT]ON CONTRACTOR CBCI lnc. expects that the installer be experiencecl and qualified to perform the scope of work or¡tlined in this design. The installer must neview this design thoroughly and coordinate with our office in advarrce of instarllation. Any additional conditions in this design or county permit mu¡¡t be completed and dc'cumented prior to final erpproval of the OWTS installation. Cr¡mmunic;ation betweerr the installer and this c'ffice is expercted throughout the inr¡tallation. INSTAI.L.ATION OBSERVATIONS CÈlC) lnc. must view the OWTS during construction. The OWTS obseruation should be perf'crmed before bacllfill, after placement of OWTS components. Septic tanks, dis¡tribution devices, pumps, dosing siph,rns, and other plumbing, as applicable, mus¡t also be observed. CBO lnc. should be notified 48 hours in aclvance tr¡ observe the installation. COMPONENT MANUFACTURER MODEL NO,COMIMENTS Septic Tank lnfiltrator@ Item # lM-1060-2CP 1O00gallon,2- compaÍment poly septic tank Effluent Filter Orenco(Ð Full size 4-inch diameter effluent filter Pump Chamber lnfiltrator@ Item # lM-540-HH Single compartment poly pump chamberwith Hl'l 0ump Pump Orenco@ PF30051 1 y2HF' 120 Volt Biotuþe ProPak Pump Packaoe Orenco(Ð BPPSODD Vault, Filter, Gontrol P¿¡nel ldemand dose) Tank Risens and Lids Orenco@ Douþle-wallecl PVC Rirìers and [ids (24" diameter) ADV orenco(Ð v64024 1.5" lnlet and Outlets ADV Riser and Lid Orenco(Ð Double-walled PVC Risers and Lids (30" tliameter) Orifice Shields Orenco(Ð OS150 1.5 inch diame,ter (66 total) Flushing Assembly Orenco(9 1.5" diameter (2) 45" or 90' long sweep only (6 total) GrSoMatrM GeoMatrix Systems, LLC 157.5' O"ot'r1ru (39") Page 6 ln an effort to improve the accuracy of the recotd drawing, we request that the installen provide a sketch of the installafion, including path rof the sewer lines, w,ater line installation (if applicable), septic t¿¡nk location, STA location, and measurements from building corners or another fixed ,obiects on the property. This sketch is most easily provided on l3heet W2.0 of the O\A|TS Design lPacket. Photographs of the installation and final cover are also requested to supplement our installation rCocumentation. REVEGETATION REQU IREME:NTS ,An adequate layer of ç¡ood quality topsoil ca¡rable of supporting revegetation shall be placed over the entire rlisturbed area of the OWTS installation. l\ mixture of native grass see<1 that has good soil stabilizing r:haracteristics (but without taproots), provirles a maximum transpiration rate, and competes well with rsuccessional species. No trees or shrubs, or any vegetation requiring regular inigation shall be placed over llhe STA. Until vegeta;tion is reestablished, rlrosion and sediment control rneasures shalll be implemented ¡and maíntained on site. The owner of the OWTS shall be respottsible for maintaining proper vegetation rlOVef. OPERATION INFORMATION AND MAIINTENANCE 'the property owner shall be responsible for the operation and me¡intenance of each OVWS servicing the property. The property owner is responsit¡le for maintaining seruice contracts for manufactured units, ralternating STAs, and any other components needing maíntenance. ,Geo-fabrics or plastics should not be used rler the STA. No heavy equipment, machinery, or materials rshould be placed c¡n the backfilled STA. Machines with tracks (not wheels) shoulcl be used during r:onstruction of the STA for better weight dir¡tribution. Livestock srhould not graze on tlre STA. Plumbing fixtures should be checked to ensure that no additionalwater is beirrg discharged to OWT{}. For example, a nrnning toifet or leaky faucet can discharge hundreds of gallons of water a day and harm a STA. lf an effluent filter or scireen has been installed in the OWTS, we reoommenrj this filter or Íìcreen be cleaned iannually, or as needed. lf the OWTS consistr¡ of a pressurized pump system, we recommend the laterals be tllushed annually, or as needed. 'Ihe homeowner should pump the septic tank every two years, or as needed gauged b)r measurement of rsolids in the tank. Garbage disposal use should be minimized' and non-biodegradable materials should not lce placed into the OWÎS. Grease should no't be placed in household drains. Loading frorn a water softener should not be discharged into the OWTS. No hazardous wasters should be directed into the OWTS. lil/echanical room drains should not discharger into the OWTS. The OWTS isi engineered fr¡r domestic waste r¡nlV. ADDITION¡rL GONSTRUCTION h¡OTES lf design includes a pump, weep holes must be installed to allow pump lines to drain to rninimize risk of ltreezing. The pump sl'rall have an audible and visual alarm notification in the event of e>lcessively high- 'úyater conditions and srhall be connected to ¿r control breaker separate from the high-water alarm breaker iand from any other controlsystem circuits. 'Ihe pump system shall have a switch so the pump can be manually operated. lExcavation equipment must not drive in the 'excavation of the STA due to the potential to compact soil. lExtensions should be placed on all septic tarnk components to allow accesl; to them from existing grade. lBackfill over the STA must be uniform and granular with no material greater than minus :3-inch. Page 7 LIMIITS: Ther design is þased on information submitted. lf soil conditions encountered are different from conditions desrcribed in report, CBO lnc. should be notifiecl. All OWTS construolion must be according to the county regulations. Requirements not specified in this report must follow applicable county re1¡ulations. The conrtractor should have dr¡cumented and demonstrated knowledge of the requirements and regulations of the county in which they' are working. Licensing of Systems Contractors may be required by county regulation. Please call with questions. Sincerely, CBO lnc.Reviewed By: (!¿tr'(nx üsth*E Carla Ostberg, MPH, REI{S Romeo A. Baylosis, PE Í*823 {¡'|: ". 5-19-2022 ": # Þ. ä.í i¡ Pump lìelection for a Pressurized System. Single Famlly Residence Proiect Lot 21-A Grand Hogback Exemption Paramete,rs 300Discharge Arßembly Size ïransport Length Before'úalve Transport PiÞe Clas8 ïransport L¡ne Size Distributing \/alvê Modêl Transport Length After Valve Trânsport Pi¡:e Class Transport Pipe Size Max Elevâtion L¡ft Manifold Length Manifold Pipr¡ Çl¿ss Manifold Pipe Size Number of Lrilerâls per Gell Lateral Longlh Lateral P¡pe Clâss Lat€ral P¡pe Size ôrlfice Size OrlfTce Spacing Residual Head Flow Meter 'Add'on' f:riction Losses Calculatir¡ns 1.25 30 40 1.50 6402 24 40 1.50 4 6 40 1.50 6 24.25 40 1.50 5132 2 5 None 0 inches leet inches feet lnches feet feet inches feet inches inches fÞ€t 200 250 150 100 50 PumpData s10 1r5 20 25 Net Discharge (Spm) 30 35 40 leet lêet oott.¡o 1t(ûo o fittràôr ol- inches Minimum Flow Rate per Orifice Number of Orifices per Zone Total Flow R¡¡te per Zone Numbêr of Låterals per ZÕne % Flow Differential lsulast Oriflcê Transport Veloc¡ty Before Valve Transpoú Velocity After Valve Frictional Head Losses 0.68 39 26.4 3 o.4 4.2 4.2 9pm gpm % fps fps Loss through Diseharge Loss in Tranriport Before Valv€ Loss through Valve Loss in Tranriport after Valve Loss in Manifold Loss in Låtêtals Loss througl. Flowmeter Add-on' f:riction Losses Pipe Volumes 4.9 1.2 Ão 0.9 0.'l 0.1 0.0 0.0 00 feet fêet feêt [eet [eet feet feet feet gals gals gals gals gals gals Vol of Transport Line Before Valve 3.2 Vol ofTransport LineAfterVâlve 2.5 Vol of Manlfc,ld 0.6 Vol of Laterals per Zone 7.7 Total Vol Befrre Valve 3.2 Total VolAfter Valve 10.9 rements 26.4 22.1 gpm feet PF3005 High Head Effluent Pump 30 GPM, 1/2HP 1151230\t 1Ø 6OHz,2OOY 3Ø 6OHz PF3007 High Head Effluent Pump 30 GPM, 3/4HP 230v 1ø 60H2, 200/460V 3Ø 60Hz PF3010 High Head Emuent Pump 30 GPM, 1HP 23øV 1ø 60H2, 200/460V 3Ø 60Hz PF3015 High Head Effluent Pump 30 GPM, 1-1l2HP 2XoV 1Ø 60t12,200123o1480V 3Ø 60Hz System Curue: - Pump Curve: Pump Optimal Range: - Operating Po¡nt: O o Design Point: SYSTÊMS SCALE: 1 = 50'=0'N-JLJt---JtdFf'l1tlI!\\\\i\\I\iiCBO lnc.129 Ca¡ns LaneCârbondale, Colorado 81623Phone 970.309.5259æda.ostbeg@gnall-conSurprise Valley 1, LLCLot 21-A Grand Hogback ExemptionGârfield County, ColoradoProjeciNumber: CÍ7û7lDaÞ: ut2lr2o22I oes¡gnea ny: csol¡eviewg u¡¡alutawt ey. vuw1.0Sheet I 0F 4M.0!4IIRESIDENCE40 lngrs / Eg6 æd UiftyEömflt by B.lJ.{ìivq|{ ln P0gß ofBæd Sæ)i\I1IIiIlIïP1fi[:t/lI)"\-\THE LOCÂTION OF PROPOSÊD IMPROVEMENÍS S}IOWNARENOT THE RÊSULT OF A PROPERTY SURVEY. THE LOCATTONSARE APPROXIMATE. IT IS THE HOMEOW\¡ERS' DUTY TOd\&rc AL LUNSIRULIIUNANU IMÉRUVÈMÈNI LUUAIIUNSARE ACCIJRATE. PROPERTY LINES AND SETBACK DISTANCÊSSHOULD BE CONFIRMED PRIOR 10 EXCAVATON. SCALEDFOR PRINTING ON I I' X 17. PAPFR."\/" /\DRAWNGS MUSTBE USED INCONJUNCTION WITH DESIGNLETT ER D A1 ED 04127 12022 CBO lnc-129 Cains LaneCarbondale, Colorado 8l 623Phone 970.309.5259caria.ostberg@gmaii.com_l..1@\v=.20-0'"%,SCALÊ:1"APPROX. ELECTRIC LINElAPPROX. WATER LINE40' lngress / Egress and UtilityEasement by R.N. 932q40(Work ln Progress c,'oülaiiia*',.ê2.COMPARTMËNT SEPTIC TANK WTH AND,ntEFFLUENT FILTER ON THE OUTLET FOLLOWED BY APOLY PUMP CHAMBER W|TH AN ORENCO PUMPRISERS AND L¡DS TO GRÀDËBM 1OO'FF LOWERLEVEL (6058)\''2-1.''.í'l)4' DIA SDR.35 SEWER PIPE WITH CLEANOUTMIN 2% FALL TO TANKSCH.4O PUMP LINE.(MrN 1% DRA|N BACK ro PU|\1T gHAMBER)ADV MODEL 6402 AT HIGH POINTACCESSIBLE AT GRADE)":ÉÞ. ^oÇ--,YâFLUSHING VALVEATÊrlu vr áun l3IElqL4" DIA SDR.35 INSPECTION PORTATCORNER OF EACH BEDl=*\i\a\-\I@,/^PROPOSED OWïS\-y3-BEDROOMRESIDENCE ,..",..Surprise Valley I, LLCLoi 2l-A Grand Hogback ExemptionGârfi eld County, ColorâdoProject Number: Cj7û7l}aei o4t2rt2o2zII Designed by: CBOIfeview.eo o¡.-!elutéwruy. uvw2.0Sheet 2 0F 4 CBO lnc.129 Cains LaneCarbondale, Colorado 81 623Phone 970.309.5259ærlâ.ostberg@gmail.com.5" DIASCIi4O PL'MP LINE"NOTE: 6' SANO ON BASE OF f0'X 26.25 BEDDEPTH OF BEÐ TO REMA¡N SHALLOW, APPROXMATELY Z BELOW GRADE(MIN 1OlO DRA¡N BACK TO PUMP CHAMBER}AÐV MODEL 6402 AT HIGH POINT,ACCESSIBLE AT GRADEWDE BEDDIA SCI+40 DISTRIBUTON LINETO MANIFOLDINSPECTION PORTS AT CORNERSÛF ÊÂCii 8EÚ'.5" DI,A SCH-40 DISTRIBUTION LINFTO ADDIÎIONAL BEDFLUSHING VALVE ATEND OF ÊACH LATERALOIA SCH.4O PVC TATERALSwrrHt'DA oRtFtcES FACTNG DOWNAT ? O.C. PLACÊD UNDERrñUTßÈ I AKf SEF,MI IUN FÆÑIÙ1.5" DtA SCH-40 LEVELGEOMAT T FABRIC OVER 1 .5'LATERALStsntstst5uts59-gtsgM^t -'ON EACH BEDrI GEd¡AT BËD PLAN\rr-Trc1,5' DIA SCH.4O PVC LATERALSwlTH 5/32'DIA ORIFICÊ HOLESF.Â.Clt'¡G DOW!!,Âf ? O.C- ONGEOMATSEPARATION FÂBRICFinished GEdeINSPECTION PORT AT BEGINNINGOF EACH TRENCHGRAÐE12'M¡n¡mum CovdSHIELDSLateÞlI'O¡ifieOdñæSfieldNOTÉTHREË 39'wlDF GEOMAT SHEETSPLACED ON 6' OF SAND IN IO'WIDE BEDNative Soil ârd/orSpedfiedSDHLEMEW'smoñwD'EFtrCre Eæ = 0.15 - 0,6 ñmUNIFOMfr CGfoEm:.7¡% nNES PNNG #2m SrM_4039"\á¡-_-_ñæ.ô. GEOMAT SECÎON\9r--$'iîrìæTBnwús¡veSurprise Valley I, LLCLot 21-A Grand Hogback ExemptionGarf eld County, ColoradoProject Number: C1707l}a,o: o4t27r2o22tes¡gn"¿ uv, cBolReview€d by. RBlurawn oy: uuw3.0 CBO lnc.f29 Cãins LanêCãrbondale, Cdorâdo 81 623Phone 970.309-5259Er rc.uè'wr g\49r¡rctr.w ¡¡DESIGN30'DIAMETER PVCRISER3€EDROOI| RESÞËilCE(75 GPD x 2 PERSONS/BEDR@M x 3 BEDROOùiS)WASTEWATER FLOW = ¡+50 GPDSTATO WATER COURSE50'>100STATOWELL100'163'STATO HOUSEm'39'SEPT¡C TANK TO 'fúATËR COURSE50'>1 ûO'SEPTC T.ô.NK TO WELLHOUSE TO SEPTTC TANK4A'OWTS COMPONENTS ANDPHYSICAL FEATURESMINIMUM REOUIREDSETBACKAPPROXIMATE PROPOSEDSETBACKTANK;MIN. IOOO GALLONSA SOGGALLON, SINGLE.COMPARTMENT POLY PUMP CHAMBER VVITH ANORENCO PUMPING SYSTÊMDISTRIBUTINGVALVE ASSEMBLYFROMPUMPING't .5" ot A scH40PVC INLETANDOUTLETSSOIL TREATMENT AREA (STA):LONG TERM ACCEPTANCE RATE (LTAR) = 0.6 GAL/ SFCÀLCULATED STA = OILTAR = ,+50 / 0.6 = 750 SFPRESSURE DOSEO, BEDS - 75O SF X l.O = 750 SFGEOMAT wlTH 6'SAND = 750 SF X 0.7 = 525 SFtt\ {nrv t^ t4 êE^lrÂTÞtñqr¡/Iru a' cÀÀtñ/A AUTOMAÎC DISTRIBUÎNGVALVE DETAILSOIL PROFILE TEST PIT NO. 1012J467I9LIGHT BROWI\I SAI.¡DY LOAMWÍH SOME LARGE ROCKINSTALL FLUSHINGVALVE ECCENTRIC TOCENTER OF VALVE BOXDIAVAL\Æ AOXW]IH SECURED LID.5" PVC SLIPXMALEVALVEPIPË T?{RFÁDADAPTERW/CAPDIFFICULT DIGGING. REFUSAL ONLARGE BOULDER, CAT 3&5.58SLIP-ON PVCBOXATGRADEDIA BALLDONOTGLUEVALVEGRADE4" DIADTASCH-40 PVCNO GROUNDWATER OR BEDROCK ENCOUNTEREDDURING EXCAVATIONINSPECTON PIPELONG SWEEP 90'ELBOWDIA HOLE DRILLEDslAINTO TWO SIDES OF PIPEFORVENTILAÏON(BELOW SLIP ON CAP)l -5" DIA S()H-¿10 PVCIATERALNOTÉ BORINGS IN KUMARANDASSOC. REPORTDATED FEBRUARY 1, 2T22, PROJECT 21-7.925AINSPECTON PORT DETAIL\g/r-fæ/^. sotls LoG\rl'---'-"'--rat/ã FLUSI.IING VAL\€ DEÏA¡L\3/r-""'--""'-¡ ÊêËttñFTendyl@mSurprise Valley I, LLCLot 21-A Grand Hogback ExemptionGarfield County, ColoradoÞ.^i^J lL.-l^¡ 447ñ7r ¡vjw. rle¡,¡ver. vr¡ vrDatei U127n022Designed by: CBOReviewed by: RBflr¡wn hrr fll'ìw4.0Shêêt 4 0F 4