HomeMy WebLinkAboutOWTS Design*{¿xd{Éãcstcl*-Eerry
2789 Riverside Parkway
Cnand Junction, Colorado 81501
Phone: 970-255-8005
Info@huddlestonberry. coml-ngi:reeri*.q it I'esting, L.L.C
March 31,2022
Project#02434-0001
Mr. Travis Ruonavaara
1337 E 8ft Street
Rifle, Colorado 81650
Subject OWTS Design
Parcel 212728100382
Garfield County, Colorado
Reference:Geotechnicol Investigation, Parcel 212728100382, Garfield County, Coloradoby
Huddleston-Berry Engineering & Testing,LLC for Travis Ruonavaara, March 31,
2022.
Dear Mr. Ruonavaara,
At your request, Huddleston-Berry Engineering & Testing, LLC completed design of an Onsite
Wastewater Treatment System (OWTS) for a single-family residence at Parcel 212728100382 in
Garfield County, Colorado. The site location is shown on Figure I - Site Location Map. A site
plan is included as Figure 2.
Site Conditions
At the time of the investigation, the site was open and undulating. Site topography is shown on
Figure 2. Yegetation consisted primarily of weeds, grasses, and small to large bushes and trees.
The site was bordered to the north and west by open land, and to the east and south by vacant
lots.
Subsurface InvestÍsation
As indicated on in the referenced report, the subsurface conditions at the site were fairly
consistent. The test pits encountered 1.0 foot of topsoil above tan, moist, stiff sandy lean clay
with gravel, cobble, and boulder soils to the bottoms of the excavations. Groundwater was not
encountered in the subsurface at the time of the investigation. Based upon the results of the
subsurface investigation, HBET believes that the seasonal high groundwater elevation is deeper
than 8.0 feet at this site.
The locations of the test pits are shown on Figure 2. Copies of the test pit logs are included in
Appendix A.
Parcel 212728100382
#02434-0001
03t31/22
Onsite Wastewater Treatment Svstem
lludrílcston-Bcn1
Seepøge ßed Desígn
The design of the absorption system generally follows the requirements of the Garfield County
Department of Public Works as outlined in the Garfield County On-Site Wostewater Treatment
System Regulations, effective June 2018. The proposed construction at the site is anticipated to
include a five-bedroom home.
Based upon visual-tactile classification of the site soils, a Long-Term Acceptance Rate (LTAR)
of 0.5 will be utilized for the absorption field design. Infiltrator Systems Quick4 Standard
Chambers are proposed. The daily flow of the sewage disposal system is calculated below, and a
plan and profile of the absorption system are shown on Figure 3.
Average Daily Flow: (8 persons)(75 GPD/person)
:450 GPD
Soil Treatment Area: (600 GPD / 0.5): 1,200 Square Feet
Adjusted Soil Treatment Area : (1,200 SFXI.2X0.7) : 1,008 Square Feet
# of Quick4 Chambers : (1,008 I 12¡ :84 Chambers
System Instøllotíon
The installation of the septic tank, plumbing lines, Infiltrators, etc. should be completed in
accordance with the Garfield County On-Site Wastewater Treatment System Regulotions and
Infiltrator Systems, Inc. specifications. In addition, the following construction procedures are
recommended:. The septic tank and distribution box should be placed level over native soils that have
been scarified to a depth of I to 12 inches, moisture conditioned, and recompacted to
a minimum of 95o/o of the standard Proctor maximum dry density, within *2%o of
optimum moisture content. However, up to 3-inches of washed rock or pipe bedding
passing the l-inch sieve may be used as a leveling course under the septic tank and/or
distribution box.. The bottoms of trenches and backfill around the septic tank and distribution box
which will support sewer or effluent lines should be compacted to at least 90 percent
of the standard Proctor maximum dry density, within *ZYo of optimum moisture
content. Pipe bedding should have a maximum particle size of l-inch.. Vehicular or heavy equipment traffic and placement of structures should not encroach
within l0 feet of the septic tank or distribution box.
Inspectíon Schedule
Huddleston-Berry Engineering & Testing LLC should be retained to monitor the construction of
the OWTS. The following schedule of observation and/or testing should be followed:. Observe the absorption bed excavation prior to placement of Infiltrator chambers.. Observe placement of the septic tank, distribution box, and all connecting sewer and
effluent lines prior to backfill. Veriff proper fall between inverts.r Observe and verifu installation of the absorption bed prior to placement of cover and
backfill.
2Z:\2008 ALL PROJECTS\02434 - Travis Ruonavara\02434-00O1 Pæcel212?28100382U00 - Geo\02434-0001 LR033l22S.doc
Parcel 212728100382
#02434-0001
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In conformance with Garfield County regulations, I{BET will be required to provide the Garfield
County Health Department with documentation certi$ing that the OWTS was placed in
conformance to the plan and profile and Garfield County regulations.
General Notes
The OWTS design was based upon the results of the subsurface investigation and on our local
experience. The design is valid only for the proposed construction.
We are pleased to be of service to your project. Please contact us if you have any questions or
comments regarding the contents of this report.
Respectfully Submitted:
Huddleston-Berry Engineering and Testing' LLC
Michael A. Berry, P.E.
Vice President of Engineering
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Z:U008 ALL PROJECTS\02434 - Tmvis Ruonavaara\02434-0001 Pæce1212728100382\200 - Geo\02434-0001 LR033l22S.doo
F'IGURES
G)qPublic.net''' Garfield County, CO
Location
Date creaþd:.2/t412022
Last Data Uploaded: 2lI4/2O22 2ß4fr3 AM FIGURE 1
Site Location MapDeveroned bvf ì FSå,ftS;dçf
TBD SCUTTERLANEPARCEL#212728100382FIGURE 2. SITE PLANHuddleston-ßerryTi*¿inc*rinil lt jÌc$liil9, ¡,ü,(:l2789 Riverside ParkwayGrand Junctior¡ CO 81501Project No.: 02434-0001Date: 03/31122By: MABNEWNEWNEW HOMESCALE: l" = 40'MINIMUM 1,500r,TANK-tREPAIRNEW DRIVEWAYTPIA(100'ASSUMED WELLLOCATIONN+.rcÉ fNXANDæDL*IONSffiROXMEÂNDMYSflFIWEOURIreÀCruAL LOCAIþN OF IN( AUSCALE: 1" = 300'C.I. = I FTA TESTPIT3$01 0
DETAIL AREA**usE swEEP 90's oRTWO 45'S AT 90DEGREE BENDST*SCAIE:1"=30'ry*DISTRIBUTION BOX THATEVEN DISTRIBUTIONINFILTR.A,TOR SYSTEMS QUICK4STANDARD CHAMBERSOF EFFLUENTINSPÞCNON4.INCH DIÀMETER SEWER ANDPIPE MEETI}.IG ASTMDI785. SCHÊDULE 40 OR SDR 3520,SEPTIC TANK'IVITHMINIMIJM I,5OOGÀLLON CAPACITYNEWHOMÐt'Huddleston-tserqr'f:lnginr'¡rint¡ *h Í"Èrf i,ì{, ì,l,i..l2789 fuverside ParkwayGrandJunction, CO 8150TBD SCUTTERLANEPARCEL#212728100382FIGURE3-SEPTICSYSTEMDETAILSProject No.: 02434-0001Date: 03131122BY: MABGENERALIZED SYSTEM PROFILENEf TBSCALERESIDENlIALSTRUCTURERISERS (AS NECESSARY)THAI LTDS ARE AT I]RINFILTRATT]R OUICK4STAN¡AR! CHAMBERSFINISHED1,0ONFTEST, 6,0TE 8,0 FTEST. 2,0 FT,+,0 FT llAx,1,0 Ff fIN. CÐVERBOXTANKGENERALTZED BED PROF'ILENOT TOSCALEINFILTRATOR SYSTEMS QTJICK4COVER SOILi NATn¡E SOILS OR OTIIER SUTABLETOPSOIL, GRADE TO CARRY SURFACE WATERSTANDARDBED.NOI.IWOVEN, NEEDLEFABRIC IMMEDIATELYMINIMUM SETBACKS(UMTS = FT)PRFERIY LINEt010t0mcc@IÊ!¡UIL!¡M3!DVELLIX64wE, smül{ßtED UtCÉ50FLM¡Frst0e5t0LM ITICH1010l0NY ilCH, CU]IAK, AU FILTt0?,l0VAÍER LIEl0êSl0VELLS5010050**OT}IER SETBACKS NOT LISTED HERE SHOULD BE IN ACCORDANCE WITH GARFTELD COLNTY OWTS REGULATTONS
APPENDD( A
Typed Test Pit Logs
BH COLUI\4NS 02434.0001 USDA.GPJ GINT!7Pmo{zC=trm7oNå(¡)ìo(ÞoImzl-rtoI<lalploþ^Nt¡-¡f-¡äoÊr æ=u-id¡;.q=¡.øòol d oacã ?uo èwFOEoFa\J ,l glæ<oaGE F.3.!0qR"ÈôfLqa--o!7Pmo5(tÞ:iozoÂ,='g.o.oo'c)o!vgmoz=m-0ooIDN-N{NoooC.)@{mØ{!{zc=@mn{PjTomoTIzo{mat5Pôo8rPËØ=UM-oomxoÞJozoozaooaIT'4,(DtrmØÞ7mc,NsNN)o+moxmo@@-lÂ)ox@o)ôiroooo=.ommoNàNNonottt=iË*;äqçSãiËHt 22o7ozomfnÞjozo-?o?mU,!LHoDEPTH(ft)GRAPHICLOG-lmntt-ImØonTIozSAMPLE TYPENUMBERRECOVERY %(ROD)BLOWCOUNTS(N VALUE)POCKET PEN.(ts0DRY UNITWT(pc0MOISTUREcoNTENT (%)-l-1=l-{@ØmnoFINES CONTENT(%)LIQUIDLIMITPLASTICLIMITPLASTICITYINDEXlY . l/2 . rs. l,¿U,0,o.roÉ.=oıA)ı'ø-lo1'U)I1-o(¡)o){(oO)(,q's-ô.5<o-4b:^>3=oJ¡oø::Eı.*øıoô}¿?nzt/, Yolh0)o.@oıoaC'J(¡sðox@oo3ooanEOJ@ooÕr.
GEOÏECH BH COLUMNS 02434.0001 USDA.GPJ GINT US LAB.GDT 3/31/22!aPmo=c3trmv()19ÀC¡)ì()ooomz-lıs.q,n=oÂt0)Ã)d€A¡JÞTTu:- Þ ã-u=-.øéo¡ ¿l oagã ?øo o-wFOEô -"(Itrglæ^.<oa;a F'0aÊ"ÈoÍ.gq|-ô!vPnlo5c)Jo2oA'3oãoo"oo!tuPmo{2=nt!0,ãoNN\¡N@o<)(¡)@N{mU,{lt{zc=trmn{pNll6)moT]zo{flta5qôo83eãØ=omoomxC)IozoozJtoIovIT'4oIoÞmovmoNÀI\)f\)o+Bxmct@l<t>-tıC)J@q,f)x=oooo=!mmoN5NNo7o>>>çrËi=SãHÉãËËHt 29ovoCzctmmIozo.?a.e-{mcn{!LNtÌtoDEPTH(ft)GRAPHICLOG{m¡5rom<t)on!IozSAMPTE WPENUMBERRECOVERY %(ROD)BLOWCOUNTS(N VALUE)POCKET PEN(ts0DRY UNITWÏ(pc0MOISTUREcoNTENT (%)-l=i-r@ømnoFINES CONTENT(Yo)LIQUIDLIMITPLASTICLIMITPLASTICIryINDEXz;..li..¡;- . 11 ..r-" rì.. r¿'ì..lr_...rì. tâ..rf . j--....rsì.- tx. .tt-.i\ t7_. ,\ .t/l(t)0,t-oÉ.=oÂ)ı'ø-to!U,o5Àl-Il\)qg<ô-5\<o-¿'¿-S3=OJJ¡oo=ÉÈ.ì+øc'o tJ¿åschYoI0,o.@odoı(¡)('lsıc)-v@oo3oothog¡5boo
BH COLUMNS 02434-0001!7Pmozc3@mvoNà(¡)àÕ(toom.z{ıØvcIß)Àtô)ı€^pÞiôÞ æxËE#åæ5 (l oeca?¡rF Fffô;"<o+E'ræ..<oedE F'o)ËûqÊ.Élô'5Eql--ô!vPmo5ôJozoÂt*a.o.oobo!7Pm()z=m!0)IDN-l\)-.¡l\)Þoo(¡)co{m|t,{3{zc=@mn{!I(.ttomo'Tlzo-.1nrlt5gôo83PÊØ=omoonrxoÞjozooz7oovI1'æotrÞ{mø,vntoNÀl\jNo+mox]tltr,@@-tıox@0to-=oooo=!mm0Nèf\)NImnmxoÞjozI]nzoo.tlIt'lxoIozeoo7Voo>Í=-c'trtl<mñlEe$DËHes þtltolzlcLl?lilo!LNnlDEPTH(ft)GRAPHICLOG3-lmvt-gmØof,,EIozSAMPLE TYPENUMBERRECOVERY o/o(ROD)BLOWCOUNTS(N VALUE)POCKET PEN.(tsflDRY UNITWT(pc0MOISTURECoNTENT (%)-t=i-l@ØmnoFINES CONTENT(%)LIQUIDLIMITPLASTICLIMITPLASTICITYINDEX.) -t.\-. ,1¿,. l\l -.t/-. r\-.. tvJ--. , ¡i-. .1-: . la. l¡ . ,;-. . .\(tÂ)o.t-oÉ.oð!¡ı'o-{o!ØIt-sl-Il-q's--arCl-5\<o-Ø^.Ð3=$JjrOsıÊó*ûq8øYø!¿oIÂ)o,@oıoaC¡)(¡s-ooF@oo3oothëÀ¡¡ooo