HomeMy WebLinkAboutEngineer's OWTS Design Plan826 COUNTY RD 237
Silt, Colorado
Garfield County, Colorado
Onsite Wastewater Treatment System Narrative
eering, LLC
I I r tt i t tg, \ I ot r t r I:t i t t,s,
2438 Jack Creek Road
Grand Junction, CO 81505
720-224-1095
www.radianengineer.com
August 23,2024
€@ Search
Home Draw Measure Find
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8963!F
8465eF
846sGF
84657-F 84557-Fo
&r657-F 84657-r
Topogra..UTM Zone 13, NAD83 x 270658.27s69
Y 4383978.46704
Circle Polygon Rectangle Edit Erase Clear
Edit Drawing
83761-F
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8407$F
84079-F
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Total: 655.14 ft
Total: 346.68 fi
Total: 369.66 ft
rotal.713.77 fl
0 100 200ft
Scale 1i 2,257 wl Go
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OWTS-6
NUUBER
q7 Drcs
COVER HTH SANDY LOAM TOPSOIL,
CROW\ TO DRAIN
DRAINAGE SWALE
SEE OWTS-7 24" MrN, 56" MAX
J wDE TNFILTRA
EXISTING GROUND
REMOVE AT LEAST 6' TOPSOIL. LEVEL.
PLACE PIPE AND INFILTRATORS OVER THE
TOP AND COVER TO DRAIN.
r.5" scH 40
PERFORATED PVC
DISPOSAL TRENCHES SECTION VIEW FINISHED GRAOE
(2)
SEE
I-WAY CLEANOUTS
DETAIL OWTS-7
NOT TO SCALE
EXISTING GROUNO
PROPOSED
HOUSE
5'
4"6 scH 40 pvc
1.5"o scH 40 Pvc
PIPE AT 2Z MIN
PIPE AT 2Z MIN
4' MIN DEPTH (TYP)
6" LAYER OF CLASS 6 AGGREGATE
COMPACT ANO LE\€L
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40'FROM ADV
TO STA
24" WDE (MrN)
2' BLUEBoAR0 rNsuLATtoN
ABOVE SETTER LINE
WHERE SEWER LINE IS
LESS THAN 45" OEEP
DIVERSION SWALE
SEE DETAIL HEREON
soLro 1.5" scH 40 Pvc P|PE
12" MtN
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INFILTRATORS
(ADS OR STMTLAR)I rz"
MIN
ttAICH EX
AT 2Z MIN
INFILTRATOR WTH END CAP
(TYP)
GRADE PERFORATED I.5" SCH 40 PVC PIPE
SEE PLAN AND SECTION VIEW SHEET
REMOVE AT LEAST 6, TOPSOIL. LEVEL.
PLACE PIPE AND INFIL1RATORS OVER THE
TOP AND COVER TO DRAIN.
OWTS SCHEMATIC PROFILE
5 COMPARTMENT TANK WTH
1000 GALLoNS (MtN) tN THE
FIRST TWO COMPARTMENTS
AND PF3OO5 IN THE THIRD
COMPARIMENI
below.
4. MIN DEPTH
FROM FINISHED
TO TOP OF PIPE
AIR/VAC RELEASE
SEE OWTS_7
NOI TO SCALE
(LE\EL)
OWTS-s AND ABOVE
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(12 INFILTRATORS + END CAPS = ABOUr 52')
1.5"0 scH 40 Pvc
PERFORATED PIPE
WTH HCILES POIN'IED
DOWN LIMITS OF DISPOSAL
TRENCH
AND INFILTRATORS
t.5"o solrD scH itc Pvc
FROId PUMP TANK
0.5'
3'
't2'
TOTAL
1.5" t *H ,lO PVC
LEVEL HEADER PIPE
OASERVAIION PIPE
TYPICAL OF 4
SEE DETAIL OWTS-7
O\E AT EACH CORNER
(MTNTMUM)
NCTE:
AT LEAST 1
O3SERVATION PIPE TO
BE INSTALLEO INTO
THE CHAMB€RS AND I
PIPE INTO THE SAND
MEDIA
FLUSHINC ASSEMBLY
TYPICAL OF 2
SEE DETAIL OWTS-7
DIVERSION SWALE
sEE CWTS-7
NUItsER
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826 COUNTY RD 257
SILT, CO
GARFIELD COUNTY, COLORADO
OWTS NOTES
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OWNER'S RESPONSIBILITIES
I. IO HELP EXlEilD II{E UIT C II{E O*IS. Il{S OilfS TrcES TOI
PEilI:
A. EXCESSI/E GANBAGE dUND€R WASIE
a E,cEsE /E Gn€ASt
c. sEPnc sYsrEI Aoulr\rEs
D. 9rO$ SIoRAGE Or rl€ OfiS Dr5F06At FrEtD
E. VEHICI,.AR ACIIUTY OI Il€ OT1S DTSPOSA! FELD
2. T{tS OUIS E NOr DES|GT€D rO ACCEPT USO|ARGI FRqt A
JAqJZA (n SPA" N{E OSIER IS RESP!(IIgA"E FOR PROPER USFOEALq JAgtzzt/g^ usq{AnGE AccGDrIG ro rHE Locrl HEALTH
GG ilE nO{.
5. ExCESgr/E |RRGAnO{ (l{ r}€ DrSPi(tSAt F€tD IAY ADr€nSfLY
flPACI II{E SEPNC STSTEU EITIOEIICY AI{D SHAII 8E AvuOED.
4, T{IS OUIS HAS EET OEgGT{ED ilI ACIffi)AI{cE SIH THE q.IRRETT
@IJNTY I'EPARNGTT C HEALIH GI.'I'EIIIfS. IT HJST BE REALIZEO
fiAr a{ ffrs Dcs o{r LAsr rlo€Frl{rlElY. LO{GEUTY uP€r{Ds ro
vARnrG DEglEE$ O{ UORl(rtArgrP UJRil{G CCl{SrRuCilCr{.
{)EOI',ACY C IIATTEI|ANCE. ;NEq'ETCY C SEPTG TAN( ruIPNG
rltE o{Elrtc L ar{o 6cAl{tc oollPosilo{ (F trNgot}rc tasrE. aM)
RESJLT{| q{ETICAL ATD PHiSCAL REACfi(lIS BETEET II{E
EMUEIT ATO IHE RECEIVING SqL IO TARRAI{TY FG II{E
PIRF(F|ATGE tr THE O|rS IS EX|ETO€D (N UruED THRq.lO{ THS
lE9Gil.
MANDATORY
PRE-CONSTRUCTION MEETING> Pftfi TO Colsrnucnolt( n{E CO{In CrA |s rO IEEI tn{ rHE
ENOD{EER TO D|SqJSS SPEOAL DEgGN FEAruRES AIO SPEONC LA'qJI\- ^o9590 * ry*Xo ^ J
STANDARDS AND DESIGN
s\€rElr Nc@$arEs A DosEo (puIpED) sEpnc sr€GI ro
INFI-TRATS OTAIEER TREXC}IES. OESICIIED FOR IL${ TNEAilETT.
PRGJECT LOCATION
826 Cq,rNrY RD 257. 9rr. C0
GARFEI.D GOIJTTY, Cq-CADO
GO\ERNING COUNTY
GARFIETD coI,,TTY COLGADO
DRAWNG EXPIRATION
fils OfiS II€gGil E @(x) FG N2 T(IIIHS FRQ' II{E DAIE STAIIPED
INSPECTION REQUIREMENTS
I. EXPGED EXCAYATq{ BOITOI OF SEPNC TAU( AI{D SEEPAG 8ED
G TRETEGS
2. AI NPE$ SEPNG TAM(S. CERATIONAL TESIING. OE TAAL
rNsrAtuD PRlm ro BAoG[_t
5. REAL IIIE trI CERAIKI{AL IIESI S{q{ OFARLY DTITOISIRATES
AII COIIROLS AI'D Eq,FTETT ARE OPERA|IO{AL TflD READY FG
USE. THS ftCLUOES IELEPI{OE UTE AND ELECIRIC COMECTUIN
(lF
1.
ApP_rcAELE)
F|NAT GRADilG YENNCAIIOI.
3. PNOVOE AS-B.iLI DRAfr{G AT Ill|E G FINAL INSPECDCT,
NOIE: NSPECIIO{S $lALL BE SO{EDLIED SII{ EIOIfER SO IHAI N0
TORI r{Ail Trc gIE U9I5 ARE RTOURED.
CONTRACTOR SUBMITTALS
TO ENGINEER
r. ALr. ffir IATERALS (LE. SAiD. cn^vEr ALO{G nil ASry
GRADAnort)
2. OilTGf Oq)€R REOIJEST N MNTG ArID AFPR('I/ED 8Y IHE
EXql€8R EFORE IIIPIEIIENIAIIff.
5. gGI€D LETER FROI INSIALLER IHAT II{E PLAI{S ATD
SPEONCATq{5 HAI/E BEEN FOLLOED ATO T{AT N{E ilSTAIlfO OfIS
gJBsra{taLLY mlPUEs frrH rHAr NF6IATO{.
4. ACq,RAIE .AS-zuIT INAUIG OF NSTALLED ITPROVEUENIS TDI
suFtoENr DEIAL SO rHAr Alt OfiS EtEltENrS CAI BE LOCATEX!
IHE DRTTTG IIUSI BE RECEIVED BY TTE ETONEER PRfi TO NilAL
ACCEP|AI{C€ AND CIRTTICAII(I{ TO OOI'ERiTNG @IJNIY.
5. At{Y gre DR UI{GS CAIED FC tl{ It{E SPEqnCAfiOT G Ot rHE
PLAr{S.
below.
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OWTS-2
NI,IIBER
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TEST PrT #1 PROFTLE LOG
O-I2. HARD CLOOOY CLAY IOPSOIL
I2'-5O. IANNI$I gLTY CLAY
50'-98 CLATtY SAI|DSTO{E UATRIX. O{ALI(Y
ro/22/2O
TEST PtT #2 PROFTLE LOG
10/22/2O
o-t2' HaRD cLooDY CLAY toPSOtL
t2'-!o' raNNrg{ gLrY CLAY
JO'-gE CLArty SANDSTOT{E ltArRDq CHALT(y
TEST PtT #5 PROFTLE LOG
10/22/20
O-I2. HARD CLOODY CLAY I@SOL
I2.-5O. IA[I{IE{ ELIY CLAY
50'-98' CtAy€y SANDSTO{E llAIR& O{Ar(y
TEST Ptr #4 PROFTLE LOG
rcla/zo
O-I2. HARD cLoDDY CLAY TOPSOIL
r2'-!o' r^{Nrslr 9LTY CLAY
rO.-98. CLAYTY SANDSTOI{E TATRD( OIALKY
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H. FIPING AND TRENCHES
PIPING g{ALL Bf ()F THE gZE. TIPE AND SCHEDIJLE INDICAIED O{ IHE PI.ANS.
ALL P|PING JOINTS STIALL 8E SOLI/ENI ffiLDED. ALL COINECNoI{S STIALL BE q,,I PERPENUqJLAR IO IHE PIPE FLOW
LINE AND FLASI.I IRIUIIED. PRIITED AND SOI.VENI ffiLDED.
rHE PIPE SLEE SHALL 8E AS INUCAIED (}{ IHE PLAilS. FOR GFAVIIY OfiS. NO PIPES FROI IHE STRUCruRE IO
IHE USPOEAI BtD SI{ALL Bf IESS THAN I PERCENI.
PIPING g{ALL EITHER BE BEDOED N (o) NAItvE ITAIERTAL. FREE G Roo(s. COBBLES AND BOIJLDERS 0R (b)
EI{OI{EER-APPROI/ED BEDONG UATERTAL.
ALL TRENC1IES FOR P'IPE SHALL BE CqPACIED IO 65 PERCENT STANDARD PROCIfi (PER ASIY T-99) ilI
NO{-IRAFFIC AREAs. AREAS SIJB.ICI TO VEHICLE IRAFFIC $IALL BE COITPACTED TO 95 PERCf,NI SIANOAft)
PROCIOR. COilIRACIOR SHALL HAI{D TAUP ANq'ilD PIPE HAUNqIES.
IRENCHES $IALL HAVE SU@I}I BOIIOI'S AND gD[fAttS UTH NO PROIRUUI{G OR $IARP OB"[CTS. PROVDE BELI
Hq.ES U}IERE REOIJIRED IO FAOLIIAIE II{STALLAIIO{.
PIPE B'RIAL $IALI BE IO DEPTH S}IOS{ o}{ PLANS. &JI IN NO CASE S}IALL PIPE BE LESS IHAN 2' INCHES.
PIPE LENGTHS 9IOTI{ ARE APPROXTATE AND $IALL BE FIELD \,ERIFIED.
I. SEPTIC TANKS AND VAULTS
9.
ro.
fl.
{L TANTS AND VA'LTS INSIALLED BEIOW GROI.,ND S}IALL BE COTSRUCIED C REINFORCED COI{CREIE UNTESS SI{Ofi{
OIHERilISE ON IHE DRASXGs. ITEUS SHALL BE RATED TO HATOLE
'OO
PsF IN NOI-IRA'TTC ANEAS OR W H-M-11
RAIEO FOR AREAS UTH VEHqJLAR TRAFFIC. IAN(S ANO VAULTS Stt 8E T'ESGT{ED AI{D INSIALI.f,D PER
TANUFACruRER.S RECOTIIIENDAIIO{S.
SEPIIC IANKS SHALT BT DEgGI{ED AND CO{fiqJREO AS SHOST or{ IHESE PLATS AND SHALT FOLLOtr EOI'ERNING
corrl{TY qnoEul{Es
ALL IAN(S AND VAULTS SHAIJ- BE WATERIIG1II AND S}IALI BE IESIED FOR WAIERNO{TNESS' o}IE 20 INO{ A@ESSPfiI fiTH A LIO S}IALL BE INCLUDED OVER EACH CoIIPARIilENT.
w TERrtO{r ltaNHotEs at{D LrDs g{ALL BE PROVTDED FoR
^l.r
PullFrNG vAtLrS AND FoR SEPITC IANKg tF zuRtAL
EXCEEDS 6 NEG5.
AN EFFLUENI FILIER IS RE(UIRED (}{ IHE SEPNC IANK DISOIARGE PORT AS gIOfi OI{ IHE PLANS.
IANKS AND VAUTTS S}IALL BE NO{-BOIJYANI T}IEI{ EIIPIY.
ALL TA{KS WLL UNOER@ A FIELD TEST FOR fAIERIIO{INESS" IHIS |EST CO{gSTS OF FILLNG EAO{ TANX TO |Is
ftII OR IHE IOP OF IHE IIAIIHOLE SIH WAIER. IHE WAIER IS TO STAI{D OVERI{IO{I (I'ORE IHAII 12 Ho|,RS). il{ IHE
IIORIIING. IHE WAIER LETEL 6 TO BE OBSER\IEO. S}IOIJLD THE $AIERI."E\IEI. HAI/E AFPEAREO TO OROP, IHE IAN(S G
IANKS frLL BE BY II{E ENONEE& SIH NO AIDITIoI{AL CO6T TO IHE ENqNEER OR OONER. D€FECIIVE TANXS ARE IO
8T REIIOI/ED FRo|I IHE PROPERIY AI NO AIDINOTAL O{ARGE TO ruE ENqNEER OR OfiER
EFFLUENT FILIERS AND HIO{ WAIER AIARIIS. fr{ERE SHO${. STIALT BE INSIATJ-ED PER IIANUFACTURERS
RECOTYENDAIIO{s EXCEPT $EN NO1ED OIHERUSI.
ALL IANK PENENAIOI{ SEALS SHALL BE WAIER Tlo{I.
TAN(S *ITH CO{CRETE OUILEI BAFFLES ANE NOT PERTTIIIED.
II{ESE REOIJIREIIENIS ARE ST'PERSED€D 8Y LOCAL OWTS qNDELINES fiERE APPLICABLE. IHE U(NE SNNGENI
REOUIREIIENT TILL BE IUfl.EUENTED.
J. PUIIPING STSIEUS
t}rEN SHOfi{ oir IHESE RANS. A PUUPTNG DOENG SYSIEU rS REOTIRED. AS A lttNtyult tHls Sr€rElt su. tNcLUD€
A BEIOW GRADE RJIIP VAI'LI SI}I ACCISS WAY. EFFLUENT R'TP. CONTRq. PANEL. 5 FLOAI CO{IR(LS. ALARU.
VENI. CONIRq- SRIIq PULL CABLE. AND PIPING OII{ER ETEUENTS UAY II{CLUDE C(}{UJI FOR IHE POTER SUPPLY.
AND A CO{NECNoI{ IO IHE B'ILUNC.S PRUARY BREAIGR PAEL.PRIOR TO ACCEPIAI.ICE TI{E RJIIP{NG STSIET UUSI
BE IESIED AND SEEN IO BE FULLY OPER^TIO{AL. TI{E ETqNEER OR ENONEERS REPRESENTATIVE I'UST TINESS NffO
GYClEs OF IHE PIJIIPING sYsIEII.
r(- rNsPEcllo{s aND crosE-drT
AI A TNIIUT ONE INSPECNOT fiLL BE REOIJIRED BY IHE ETqNEER PRIOR IO IHE RJRIAL OF T{E SEPIIC SYSIEU
ONCTUOING IHE DISPOEAT BEO AI{D SEPNC TANT). SEE IHIS STIEEI FOR INSPECNON REQTNREYENTS INSPECTIOIS TLL
ALSO 8€ REOUIRED AI{D PERFORIED BY IHE GOVERTIilG COUNTY, II 15 IHE CO{IRACTG'S TGSPOTTEBLIIY IO
CO{IACI THE ENONEER AND COUNTY REP1RESENTANVE FOR INSPECIIO{S"
PRIOR TO FINAL ACCEPIAfiCE THE COIIRACIOR gIALL PROVTOT IO IHE ENONEER AN'AS-COISIRUCIED'g(Erq{ OF
II.IE INSIALLED Of,IS COIIPor{ENTS FOR FUruRE LOCANO{ R'RPO6ES. II{IS gGIO{ S}IALL IIE EACH INSIALLED
COIPO{ENI TO IIO PRTARY SIRUCruRES ONEIE. OR NEAREY I}IE ETE. II{SIALLED COIIPONENTS NCLUDE SEPIIC
IAN( ACCESS PORTg D|sIRzuNON BOXEs. CORNERS T USPOSAT BED. PUUPII{G VruLT. EIC. rHE gGIC}I *IALL BE
TEOBLE AND EIIHER ORASI oll| A PIAI{ OF II{E SIIE 6 O{ A SEPANAIE $IEEI. IHE SGIO{ STIALL 8E SIJdIIIIED
IO IHE ENONEER AT II{E IIIIE Of FINAI. INSPECIIC{.
CALL FOR INSPECIIoNS Ar LEASI 2 *ORTONG DAYS PR|oR IO IHE DAY 0F IHE |NSPECIIO{.
IHE COIIIRACIOR gIALL C('uPILE ALL INFGIIAII(N AND DOqJUENTATO{ P]ROVDED BY THE TANUFACruRERS FOR
OfrIS CdPO{ENTS NIO A IHREE RING BNO€R. CO{IRACIOR SHALL PROVIDE THls IO OTI{ER PRIOR IO FII{AL
INSPECTION. IIEIIS INCLUOED IN BNDER STIALL BE ATY *ARRANIY INFORTANOI OPERANOil AND TANTENANCT
INFORTIAIIO{ OR ANY OIfiER RELEVANT INFOMIANO{ GATHERED BY IHE CO{IRACIOf, DUNNG COI{SIRUCNO{.
FUIURE LAID USE SIAIEIENI:
TH|S sTE |s EXPECIED IO REITAIN (I) gNGTE FAILY HOIE HIH IT"ICAL REgDENIIAL EFFLUENI.
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OWTS_1
NUYBER
6 7 DSGs
CIVIL ENGINEERING GENERAL NOTES:
rHE FoLLOITNG NOIES AND SPEOF|CIIO{S Col{SrrurE A rlAJoR PORrO{ 0F rHE O{gtEf srEwarER sYslElt DEgGil. IHESE l{OrES AtD SPEOfiCAnOIS Lusr BE SrRtrLy A0|{EREo TO
F8 PNOPER @I{SIRI.'CI|O{ ANO PERfORIAI{CE G IHE O{slIE TASIETAIER INEAIICNI SIBIEU
DESCn|E€D }€REN.
COilIRACI(N AND Ofr{ER SHALL 8E RESPlOilSItsTE FOR OBTTiII{G AT NECESSARY PERUIIS
REQT'IRED FOR IHIS PRO.'ECT FROU THE CqJilIY. APPLCAELE UIIUil CflPANES A}ID FROI
ANy OrlrER APPLTC BLE @\'ER|ll]{C AGEI{OES PftC rO SraRr 0F CO{SrRuCrO{.
r{ls o{grE wasrEwarER nEAilENr srslEn (ofis) HAs BEEN DE9o{ED tN ACConDAilCEsft ilE u06r drRREl{r @vERr{NG corrl{fi o{grE w srEw rER rREAruEr{r siErElr
RfqJLAllro{S,
IHE CC'{lnACTOf, gIALL HAI'E CT{E SET OF COIJNIY APFROVED AI{D SGTED PLANS (l{gIE
Ar ALL nIES UrRil{G CCrtrSrRuCno}{.
n€ @ilrRACIoR lS RESPO{EELE FoR I/ERFIIIG IHE HoRlZot{lAL AND IrERltrL LoCAfioN
OF ALL EXENNG UIILIIIES. INCLUDII{G UNUNES NOI S}IOfi{ O{ PTANS *IEN rcR(lNG
NEAR EXSNNG UIILIIIES. THI CO{IRACIOR SHAU. EXEROSE g'FFIOENT CANE N fiIRT(ll{G
AROTJND IHE EXSIING UI|L|TL t{ rHE EVEN lr{At IHE PLAI{S DO l{OT g{Of ACruAL F|ELD
@NDIIIONS'
IHE @I|nACIOR S}IALI CAI,I EII F(N UNLITY LOCAIES AI IEASI 2 BUgNESS DAI€
BEFfiE CCNSTRUCII(}I BEGNS.
co{rR cIoR sHaLL IERFY /rLL }lorEs, DrlEt{go1{s. Lrl{Es Ar{D ELEyArloNs 0r{ PrANs
PftOR TO COilSTnl,CNON AI{D SHALT NONFY THE ENONEER OF ATY DISCf,EPATOES IN
mtnilG.
rHE COITNACI(N SHALL HAI€ PRIOR EXP€RIEI{CI II{ II{SIALLAITCT{ OF O{gIE UASIEUAIER
SYSTEUS OF IHE NAruRE FOUND IN IHESE PLAI{S.
TlrE corrR^croR $|ALL Elfitoy 9(|LrED LA86 ar{D g{ALr E'GqjrE BESI CO|srRuCn(I{
PRACnGES C ru TRADES r[\rq-vED N rHE C(}tSrRuCn(x{ OF rHtS OUIS,
IHE CO{TRACTfi $IALL REFER TO AND FO.IO* II{E IIOST R€GNT I'ERSIOI T IHE TOGAL
ETECIRICAL AI{D PLUYBNC COO€g AS ffiLL AS I}lE UOSI RECENI VERgO{ tr N€
@vERr{rl{G Corrl{rt's ofis REqJLATO{9
ALL .II"ICAL DEIXLS.gIALIL APPLY GEI{ERALLY TO IHE AREAS IN THE ORASNGS fr{ERE
lr{E oo{ullo{s aRE slt[An' ro rHE c(xDtrtot{s N rHE TrPtcAL oErax..
A ffiITlEN ENqNEER.S APPRO'AL UUST ACC(IIPANY ANY CIIATGIS TO THESE PLANS ANY
UNAUn{ORTZEo O{AI{CES ARI Ar rHE SO.E USCREToI{ Al{D Rrst( OF n{E PERS('{ IA|(NG
ru O{ANGES.
THE ENqNEER IIUST BE UIIEDIAIELY NONFIED IF. UNftG CO{SIRI'CIIOT. UI{INIIOPAIED
CCNUTONS
^RE
ENOqJNIERED fr{lq{ ARE NOT COTERED IN IT{ESE PLANs.
LNTESS ftESE PLAI{S 9{OO SFOT ELEVANO{S. FIT|g{ED GRADE CONTdJRS. OISTANCES ATD
OTENgOI{S IO EVERY DEgq{ FEAILNE, fiEY ARE PiGSENIED IN SC}{EIAIIC FOn|I OILY.
@TTRACTOR TAY HAI'E IO PERFfiT FIELD ADIJSIUENIS IO AC}IIEVt IHE DEgGN INIENI.
WORK sl{qJTD STOP IIIUEUATELY. ANO II{ ENONEER 9{A[ 8E CONIAGIED. IF SOL
CO{UnoilS VARY lN Il{ USPi06At AREA FRoll I}l06E S{Ofi{ 0N I}lE IESI Plt PRoFILE
OI{ PAGE O{E OF THESE OSTS PLANS.
ALL IIAIERIALS AND T@(yTNS}IP $ALL C(}lr(nll IO GOVIRT{ING Cq'{IY REGIJLANoI{S.
THE CO{IRACIOR S}IALI BE RESPO{9g'E FOR REPLAqTG A RESETTNG ANY 9O{S.
FENCES. 5IR{JCruRES. ETC. UNI,f,sS OTHERISE II{DCATED O{ l}IE PL^Ns. THESE IIEIS
S}IALL BE REST(NED TO THER G|qI{AL COTUIO{.
B APPLICABTE COIS AIID SIANDARDS
VEGIIAIO{ FROII DATAGE UJRNG CO{STRUCNON $ THE O*IS.
D. sllt ETCAVAIIO{
ALL EICAVAIIO{S DEEPER IHAN a FEEI SHALL 8E LA(, BAO( AI A SL@E 0F 4H:l%
UI{LESS EIIHER (o) IHE SIEEPER SLOPE lS PERflIIIED 8Y IHE ENqilEER FoR rHE
LOCANON N OIJESNO'{ A (O) IXf C()I{IRACIS PROUDES A Pf,E-ENGNEERED SOL
RETENToI{ S}STEU.
C(I{INAC(N SHALL CflPI-Y TIl{ ALL OCOJPAII(}{AL SAFETY AND HEALI1I ADUil{STRATOil
srAr{DARDS (0S{A} FoR nENOt StFEry.
ONCE IHE DISPOEAL ED HAs BEEIT EXCAVAIED. NO EQUlryETI G FOOI IRAFFIC IS
PEtillrrED lO IRA\I€L OVER rHE IREA 0F lllE OISPOSAL BED ExCAVAflN.
II.IE 9DEWALIS AND BOIId (r II{E DISFOBAL ANEA g{ALt BE SCAFFCD IO A DEPTI{ C
D{REE (J) rO 9x (6) ftO{ES SO n{AT NO SUEARED. COTPACTED OR OTHERTSE SEALED
s0{- R€llxxs.
EXCAVANON S I}€ USPiO6AL AREA IS HOT PERUIIIED *IEN IHE SOLS ANE IqST OR
tEr.
IF GROIJI{DSAIER OR BEDR@( IS EIICOUTTERED, EI{OIIEER YUSI 8€ IIIIIEUA|ELY NOIIFIED.
II{E BOIICII OF EXCAYAIIONS IIUSI 8E IEI/EL SO THAT I{O I'EPRESgO{S GNEATER IH&{
O.T FEET RETAII{. EXCAVANO{S INCLUDE BJI ARE NOI U$IED IO IHE DISPOSAL BED.
SEPTIC TAfiX. DOEING slPI{O{ VAULI ATD PI.'UP VAULI.
lI lS lllE CO{rRAClfis RESPiol{ggLtTY TO yAlNIAll{ A DRY ExCAYAtloil |I{CLu)|NG
D€TAIERNG AND DRNNG NUE. lr HEGSSARY. CO6TS AsS@ATED ilII{ DRNTG AN
EXCAVANO{ ARE II'ICLUDED N THE OVERALL PRqIECT COSI.
EJITLPIACEIEIrI
I. ALL FILL gIALL BE PfiOVIDED FROTI AI{ ETqIEER APPROI/ED SOI.RCE. CO{IRACIOR gIALL
SUBIIII. IN ffiIfiNG. IHE SOL{TCE ArID q,|RRENT GRADANOil C ALt UPORTED SAIiOS A}TD
GRAVETS IO EI{OIEER FOR APPROVAT PRIOR IO D€LII/ERY TO IHE JGgIE.
2. FILL S}IAIT BE PLACED A5 I{OIEO ETLO*, BASED (}{ FILL IIPE:
2.1. CLAY: PLAG GLAY FILL IO DEPIH $IOfr{ O{ PLAr.ls. PLUS IOE IO ALLOtr FC
COTIPACNOI. COTIPACT N 6. LIFIS I.lslNC EXCAVAIOR A'qGT ATD LIGflILY IATP
g,RfACE 6 CLAY FILL.
2.2. SAil& PLACE SAI{D FILL TO DEPTH *|ofrT (t{ Pl.AI{s. TAIER SEITLE BY FLOOOING
nrE ENrRE LAIIR tO A SrAt{OtNG l[PrH q 5 Ncr|ES. Al.Iott ]}tE
'AIER
rO
COPTf,TELY DiAfi. IHEN ADJJST THE FILL IO I}IE DESIGN I'EPIH. REPEAI AS
NECESSARY.
2.5. GRAVEL: PLACE CRAr/EL FILL rO DEPIH Sllof{ or{ P|-X{S. IHEN CflPACT BY
LIGFITLY TAIPII{G frfi AN EXCAVAIOR q.'OGI. AD.IJST IO FI{AL CRAOE PER
PLANS AFIER IAIPNG IS CXilPI.EIE. GRAVEL S}IALL BE R'SIIED INTO IE NATIE
SOIL: l{O IUIHIG 0F GRA\IEL lS PERlllIItD.
2,1, TOPSOIK LOOsELY PLACE TOPSOL COVER IO A DEPIH OF 2. GREATER ilA{ THE
I'EgGil DEPIH.
F- F|NEHED Cn/lDilG
ALt FIU$IED GRADNG TALI 8E COIPIEIED IO II.IE EXIENI IHAI NO I'EPRESSOTS IESS
IHAN 0.2 FEET REYAIN. UNIES6 OIHERSSE URECIED BY ru ENONEER.
AtT SLE€S $IAIL DRAIN TO flTHER A D€UCATED DRAII{AGE CO{IROT SIRUCruRE OR
$AT $EEI FLW IO UND|sruR8O I/EGEIATED ANEA AWAY FROT DIE OISPO6AI gTE.
FIIISI.|EO CRAI'ING STIAIL BE @II4ETEO il{
^LL
AREAS DISII.REED BY COTSTRUCNOI
ACIMNES AND IN ALL AREAS INDCAIED O{ II{E PLAI{S.
t il/ERgOt SWATES SltALL BE Cor{srRt CrEo ARotJr{D rHE Dt5P06At AREA t tEngOl
SALES SHAII IAXE WAIER AIYAY FR(II IHE DISPOSAL AREA AT\D g{ALL OANIEIT DOfr{
9.0P€. U\rERgor{ SW LES S}|ALL E C('{SIRUCIED Ar A 2t UilUUU GRADE. UXTESS
orHER*sE rltrIlrCAIEo ol{ Il{E PLArrS.
DISPOSAL B€D ARIA S}IALL BE PROIECITD FROII I'EHqJLAR A}ID PEDESTR|AI TRAVEL
otJRtNG C(}tSrRuCn(}t Al{D AF|ER CO|STRUCt(}| rS CO|PLETE.
A REvEGftAtrCt'r
ALt USruRBED AREAS (f OWIS C(t{SfiUCrl(}{ S}IALL BE REVIG€IAIED BY EII}CR (o)
FoLLoSltG rHE LAiloSCTPE ARO{rrECruRAr PLANS 0R (b) PLAqNG S@ 0R SEED lttx AS
T'IRECIED BY IHE OfiER. ALL REVEGEIAIIoI{ EFFGIS SHALL BE INCLUI€D N PNqfCT
co6r.
Ffi IIOIJI{D OWTS USPOEAI BED $ETEIIS. 7OT tr IHE Iq'NO IIUSI HAI/E ESTAEUSHED
VEGEIANOI PR1OR TO ENqNEER CERNFNNG CqiPtEr|OI C lHE SYSTEU TO IHE COUTIY
HEALIH OfTTqAL.
ALt AREAS TO RECEII'E REVEGEIAilO{ EIFORTS SHALL HAI/E 4 INOIES OF IOPSOL COVER
PLACE PRIOR TO SEED G SOO PLACETEiT.
resols TNCLUDE cLArtY SANDS. s l{D,/crAY IrXruR€g gLrY SAI{DE 0R SAND,/CLT
l|rxruREs. IOPSOL ${ALL HAr/E l{O Gn VEt OR ROO(S.
t.
2.
I
a.
5.
6.
7,
&
t.
2.
5.
1,
5.
6.
7.
a
9.
'to.
fl.
t2.
r5.
la.
15.
t6.
q,RRENI EUNor{S OF THE FOI.LOUI{G COI'ES AND SIAilDARDS 9IAI BE USED DT,RNG
co$rnucnoa{ d rHls owrs
t.
z
5.
1.
t.
t.
2.
J.
I,
5.
6.
7,
a
9.
r0.
2.
5.
1.
arERrcAN soc€ry oF rEsrtNG aND IAIE$AL5 (ASry)
utFoRll PLUUANG C00E (0utD00R) (LPC)
ul{rFstr zurrDil{C c@E (uB:)
NArtotat ELECTR|C COO€ (NtiC)
OWTS qJDLENES FOR I}IT GOI/ERI{ING COI.INTY
Cq,NTY LAND USE COOE
AtaERtCAN CoNCRETE tNSfirurE (AO)
CO{CREIE REINFORqNG SIEEL NSNIUIE (CRSI)
SIAIE OF Cq-oRADO OTTS (UDELOTES
O9IA INENO{ SAFEIY STANOARDS
. gtE PNEPARATI(}{
ALL \IEGEIAIIOI{ FROI IHE OISPOSAT AREA S}IALL 8E RETOVED IO A DEPIH (f 5 TO 6
rl{o{Es. RfllovE ALt IREE Ar€ BrUg{ Roors GREATER IHAN 5,/r tNOt D|A|ETER TO A
DEPTH OF 5 FEET BELOW IHE BOIIOI (F DISPOSAL AREA
ADEoUATE gJRvEy IETHOOS SlrAtL BE Ur[-tZED FoR rHE LAyot r 0F rHE OWrg SrEt{
OIEO(NG FOR SEIBAq( COIIPLIANCE. OEIERIINNG ELEVANON AID HfilZOilTAL ELEUENTS
ANO CCT{FLGTS ATD OIEO(|IIG F(N UNUIES AND UNLIIY CO{FUGII
cor{rRAcT(n ls REsPo{sttsrE FoR PRO|ECI|NG EXSI|NG STRUCruRES. urll.lrEs Al{D
't.
2.
5.
g"
sYsTeMs
Pump Curve
for PVA3OO5 / BARNDOMINIUM
'100
10
10
90
80
70
aog60
Io
d
Gor50
.9
E
Gc
o
340
P
30
20
0
40 5020 30
Net Discharge (gpm)
0
Appendix A
OWTS Design
Taking 300 gpd / 0.55 =545.5 sq feet of disposal area. Using 3 foot wide quick 4 plus infiltrators,
an STA bed with 4 rows of infiltrators and a minimum of 46 feet long will be required.
lnfiltrators are 4 feet long, therefore there will be 1-2 infiltrators per row and a length of 48 feet
per row. With four rows, this gives a total of 48 infiltrators required for the project. The final
dimension of the rows will be 48 feet long plus endcaps, giving an overall dimension of 52 feet.
Overall dimensions of the STA are L2'X52'
Soil type 3 requires a 4' soil section according to Garfield County Onsite Wastewater
Regulations. The system will qualify as a TL2 system, due to the pumped dosing system. The
test pits show no groundwater and bedrock more than 4 feet below ground. Therefore no over-
excavation will be necessary for the STA location. Topsoil will be removed prior to placement of
infiltrators and pipes.
To qualify for a TL2 system, all systems in Garfield County require dosed distribution. A pump
will accomplish the dosing for this OWTS. The pump curve and information can be found in
Appendix B. The pump calculated is a PF3005 pump.The transport line and the distribution
lines will be 1.5" diameter schedule 40 pvc. The pump will be located in the third compartment
of the septic tank. Pump calculations will be for a L500 gallon, 3 compartment tank. Maximum
pipe volume, including STA piping is calculated as follows:
Area of pipe is calculated as n* .7952 = 1.985 in2 (0.0L38 ft2).
Maximum pipe volume is calculated as (48x4 + 24 + 1,21= 229 ft of pipe X .0138 ft2 = 3.15 ft3, or
23.6 gallons.
However, the site is pumping downhill and will have minimal drain back. The tank floats will be
set to allow approximately 200 gallons out at a time.
Closeout of proiect
After final inspection of the septic system and STA, owners are provided with a brochure on
how to properly take care of their new septic system. This brochure is produced by Pipeline and
is entitled Maintoining Your Septic System - A Guide for Homeowners.
Brynn Boyd, P.E.
720-224-L095
radianengineering@ hotmail.com
Brynn Boyd is a Professional Engineer in the State of Colorado. She has 1-6 years of engineering
experience and L5 years of septic design experience in the State of Colorado. She has a
Bachelor's of Science in the Geological Engineering from the Colorado School of Mines.
Sitc lnvcstigation
On October 22th,2020 Kenneth J Brotsky, P.E. performed a field investigation at 826 County Rd
237, Silt, Colorado. A two bedroom home will be built on site. Four test pits were dug in the
area of tlre proposed soiltreatnrent area (5TA). Tlre test pits were logged and are shown in
Appendix A.
The test pits were dug to the east of the proposed homesite. The test pits were 60 feet apart
from each other, near the same elevation of the STA. All test pits were dug to 98" deep with a
mini excavator. After L2" of topsoil, the test pits consisted mostly of clayey sandstone matrix.
Percolation tests done on site indicate a type 3 soil.
The location of the test pits, home site, and property lines are located on the drawings
attached.
There is an existing home on the property with its own OWTS system. There are no issues with
maintaining any of the setbacks per Garfield County regulations.
Setbacks from the STA (soil treatment area) bed to features on site will be as follows. These
setbacks follow the setbacks listed on the Garfield County Onsite Wastewater Regulations.
More setbacks than these listed can be found in the table within the regulations.
Well: > 100
Dweliing (no basement): >20 feet
Property Line: >10 feet
Construction related issues will include the overall steepness of the site and keeping
contaminated soil in place. lf it is discovered during construction that the remaining soil under
the STA contains greater than 35% rock, additional excavation and backfill will be required.
There are no potentialfuture land use changes that are anticipated at this time. The Garfield
County OWTS Program Design Review Check Sheet was used on this report and plan set to
check compliance with Garfield County OWTS regulations.
Design
Following the Garfield County Septic Regulations Guidelines, the following calculations were
determined:
A two bcdroom housc givcs 300 Gallons pcr Day of cfflucnt. Soils in thc tcst pit indicated a
type 3 soil, giving a LTAR of 0.55 when usingthe TL2 method. An LTAR of 0.55 will be used for
calculations.