HomeMy WebLinkAboutEngineer's OWTS Design Plan129 CAINS LANE
CARBoNDALE, CO 81623
970.309.5259
CARLA.oSTBERG@GMAIL.CoM
Fil':t"l' r(' ('('\'F;r't.'l't :i(i
May 10,2024 Project No. C1877
Jeremy Keranen
ie remv@vou nq-services.com
Subsurface lnvestigation and Onsite Wastewater Treatment System Design
4-Bedroom Residence + 1-Bedroom Accessory Dwelling Unit (ADU)
449 Ram Lane
Garfield County, Colorado
Jeremy,
CBO lnc. performed a subsurface investigation and completed an onsite wastewater treatment system
(OWTS) design for the subject residence. The 10.21-acre property is located outside of Silt, in an area
where OWTSs and wells are necessary.
Legal Description: Section: 32 Township: 5 Range: 91 A TR lN SENENW CONT. 10.21 AC AKA LOT 4
PIFFER SUB-DIV EXEMPTION.
Parcel lD: 2125322001 99
SITE CONDITIONS
The property is currently developed with a 3-bedroom residence. The residence is served by an existing
OWTS. The system consists of a 1250-gallon, two-compartment Copeland concrete septic tank followed
by a soil treatment area (STA) comprised of gravelless chamber trenches. Garfield Count lndividual
Sewage Disposal System (ISDS) Permit 4193 documents the system. The system was sized to
accommodate 3 bedrooms. The permit received final approval on November 6, 2006.
The existing STA is experiencing slow draining. There is a desire to size the new system to
accommodate an additional bedroom in the residence (total 4 bedrooms) and for a 1-bedroom accessory
dwelling unit (ADU).
The residences will be served by a private well on the property. There are several wells located to the
south of the residence. The wells are at least 50-feet from any existing or proposed septic tank and at
least 100-feet from the proposed STA. The water line must be located. We have approximated the
location of the water line on our site plan. The water line must be at least 2S-feet from the proposed
STA, at least 1O-feet from the proposed septic tank, and at least S-feet from any sewer line. Where the
sewer line crosses the water line, it must be properly encased. See W3.0/5 Encasement Detail.
The proposed soil treatment area (STA) location has an approximate ten percent slope to the southeast.
The proposed area is sparsely vegetated.
There should be no traffic or staging of material over the future STA site to avoid compaction of soils
prior to construction of the STA.
Page2
SUBSURFACE
The subsurface was investigated on April 30,2024 by digging two soil profile test pit excavations (Test Pits).
A visual and tactile soil analysis was completed by Carla Ostberg at the time of excavation.l
The materials encountered in Test Pit #1 consisted of light brown silt clay loam topsoil to a maximum depth
explored of 6.0-feet. No bedrock or groundwater was encountered.
The materials encountered in Test Pit #2 consisted of light brown silt clay loam topsoil to a maximum depth
explored of 7.O-feet. No bedrock or groundwater was encountered.
A sample of the soil was taken from Test Pil#2 at 3-feet below grade. Soil structure grade was
moderate. The soilformed a ball and a ribbon 1 to 2-inches in length before breaking. Soil structure
shape was blocky and consistence was friable to firm. Soil texture was more smooth than gritty.
The soil is consistent with Soil Type 3, Silt Clay Loam, with moderate structure grade. A long-term
acceptance rate (LTAR) of 0.35 gallons per square foot will be used to design the STA.
Test Pit #1 excavation near septic tank Test Pit #2
' Carla Ostberg holds a Certificate of Attendance and Examination from the CPOWVisual and Tactile
Evaluation of Soils Training.
Page 3
Sieved sample Ribbon 1 to 2-inches
DESIGN SPECIFICATIONS
The existing STA will be abandoned in place.
Desiqn Calculations:
Main House = 75 GPD x 2 people/bedroom x 3 Bedrooms + 75 GPD (4th Bedroom) = 525 GPD
ADU = 75 GPD x2 people/bedroom x 1 bedroom = 150 GPG
Average Daily Flow = 675 GPD
LTAR = 0.35 GPD/SF
675 GPD / 0.35 GPD/SF = 1928 SF x 1 .0 (gravity, trenches) x 0.7 (chambers) = '1359 tt
The OWTS design is based on 4-bedrooms in the Main House and 1-bedroom in the ADU. An average
daily wastewater flow of 675 GPD will be used.
The existing 1250-gallon, two-compartment concrete septic tank serving the Main House will remain. We
recommend exploring the sewer line with a camera to assure it is in good condition. A double-sweep
clean out should be installed between the house and the septic tank. The septic tank must have an inlet
sanitary tee and an Orecno@ Biotube Effluent filter must be installed on the outlet side of the septic tank.
Page 4
Risers must bring the manhole lids to grade for access. lf more than one riser is added to the septic
tank, an extension handle must be installed on the effluent filter.
Pipes used for access will be replaced with proper risers.
A new minimum 4-inch diameter SDR-35 sewer line will be installed to serve the ADU with double-sweep
clean out and a minimum2o/o grade to the septic tank. Any area under a driveway or traffic area must be
minimum Schedule 40. The sewer line will cross the water line. The sewer line must be properly
encased within S-feet of the crossing (See W3.0/5 Encasement Detail).
A new 10OO-gallon, two-compartment lnfiltrator@ poly septic tank with an Orenco@ Biotube effluent filter
on the outlet tee must be installed to serve the ADU. Any state-approved concrete or poly septic tank
may be substituted. Risers must bring the manhole lids to grade for access. lf more than one riser is
added to the septic tank, an extension handle must be installed on the effluent filter.
For the purposes of this OWTS design, Benchmark Elevation has been established as 100' as the
existing sewer line exiting the existing septic tank. CBO lnc. should be notified of any discrepancies or
problems with grade elevations of proposed components during installation of the OWTS.
*Elevations are based upon sta OWTS installation practices. Component elevations may change g
installation due to site conditions. Minimum grade refers to piping between components.
Sewer lines exiting the septic tank must be minimum 4-inch diameter SDR-35 with a minimum 1% fall to
the distribution box. The sewer line from the ADU septic tank must tie into the sewer line from the septic
tank serving the Main House with a wye fitting before the distribution box.
Minimum ElevationOWTS Component
Approximate horizontal distance 76' I min.2% lall I
min. 19" fall
Primary Tank lnlet lnvert (ADU Tank)
Approximate horizontal distance 115' from ADU
septic tank / min.1o/o fall/ min. 26.75" lall
Approximate horizontal distance 30'from Main
House septic tank / min. 1o/o fall / min. 3.75" fall
Distribution Box
Approximate horizontal d istance 44' to fu rthest
trench / min. 1% fall to STA / min. 5.5" fall
lnfiltrative Surface
Page 5
Effluent will gravity flow to a distribution box, and then to six gravelless chamber trenches. The
distribution box must be accessible from grade and must have flow equalizers, or similar product,
installed on each outlet pipe in the distribution box to assure equalflow to each trench.
Each trench will consist of 19 'Quick 4' Standard Plus lnfiltrator@ chambers for a total of 1 14 chambers
and 1368 square feet of infiltrative area. There must be at least 4-feet of undisturbed soil between each
trench. lnspection ports must be installed at the beginning and end of each trench. Ports may be cut to
grade and placed in sprinkler boxes for access.
COMPONENT SPECIFICATIONS
The component manufacturers are typical of applications used by contractors and engineers in this area.
CBO lnc. must approve alternative components prior to installation of the OWTS. Requests must
be submitted, in writing, to our office for approval prior to installation. Component technical data
sheets are available upon request.
Construction must be according to the jurisdiction's adopted On-Site Wastewater Treatment System
Regulations, the OWTS Permit, and this design.
PERMIT APPLICATION INSTRUCTIONS
An OWTS Permit Application must be submitted to Garfield County Environmental Health Department.
https://www.qarfield-countv.com/environmental-health/filesqcco/sitesi16/OWTS-Application-Complete-
Packet-Dec.-2019.pdf. lf the OWTS Permit Application will be submitted with a Building Permit
Application, it should be submitted directly to Garfield County Building Department.
All questions regarding permit submission can be directed to Garfield County Environmental Health
Department, 970-945-66 14 x81 50.
INSTALLATION CONTRACTOR
CBO lnc. expects that the installer be experienced and qualified to perform the scope of work outlined in this
design. The installer must review this design thoroughly and coordinate with our office in advance of
installation. Any additional conditions in this design or county permit must be completed and documented
prior to final approval of the OWTS installation. Communication between the installer and this office is
expected throughout the installation.
INSTALLATION OBSERVATIONS
CBO lnc. must view the OWTS during construction. The OWTS observation should be performed before
backfill, after placement of OWTS components. Septic tanks, distribution devices, pumps, dosing
COMPONENT MANUFACTURER MODEL NO.COMMENTS
Septic Tank lnfiltrator@ M-1060-2CP 1000-gallon, two-
:ompartment poly septic
lank
Effluent Filter Orenco@ 4-inch diameter, full size
Tank Risers and Lids Orenco@ Double-walled PVC Rlsers and
Lids (24" diameter)
Distribution Box Polylok Dlstrlbution box, rlsers, llds,
and flow eoualizers (6)
Chambers lnttltrator(E 'GlurcK 4', Plus Standard 114 Chambers
Page 6
siphons, and other plumbing, as applicable, must also be observed. CBO lnc. should be notified 48 hours
in advance to observe the installation.
ln an effort to improve the accuracy of the record drawing, we request that the installer provide a
sketch of the installation, including path of the sewer lines, water line installation (if applicable),
septic tank location, STA location, and measurements from building cornens or another fixed
objects on the property. This sketch is most easily provided on Sheet W2.0 of the OWTS Design
Packet. Photographs of the installation and final cover are also requested to supplement our installation
documentation.
REVEGETATION REQU IREMENTS
An adequate layer of good quality topsoil capable of supporting revegetation shall be placed over the entire
disturbed area of the OWTS installation. A mixture of native grass seed that has good soil stabilizing
characteristics (but without taproots), provides a maximum transpiration rate, and competes well with
successional species. No trees or shrubs, or any vegetation requiring regular irrigation shall be placed over
the STA. Until vegetation is reestablished, erosion and sediment control measures shall be implemented
and maintained on site. The owner of the OWTS shall be responsible for maintaining proper vegetation
cover.
OPERATION INFORMATION AND MAINTENANCE
The property owner shall be responsible for the operation and maintenance of each OWTS servicing the
property. The property owner is responsible for maintaining service contracts for manufactured units,
alternating STAs, and any other components needing maintenance.
Geo-fabrics or plastics should not be used over the STA. No heavy equipment, machinery, or materials
should be placed on the backfilled STA. Machines with tracks (not wheels) should be used during
construction of the STA for better weight distribution. Livestock should not graze on the STA. Plumbing
fixtures should be checked to ensure that no additionalwater is being discharged to OWTS. For example, a
running toilet or leaky faucet can discharge hundreds of gallons of water a day and harm a STA.
lf an effluent filter or screen has been installed in the OWTS, we recommend this filter or screen be cleaned
annually, or as needed. lf the OWTS consists of a pressurized pump system, we recommend the laterals be
flushed annually, or as needed.
The homeowner should pump the septic tank every two years, or as needed gauged by measurement of
solids in the tank. Garbage disposal use should be minimized, and non-biodegradable materials should not
be placed into the OWTS. Grease should not be placed in household drains. Loading from a water softener
should not be discharged into the OWTS. No hazardous wastes should be directed into the OWTS.
Mechanical room drains should not discharge into the OWTS. The OWTS is engineered for domestic waste
only.
ADDITIONAL CONSTRUCTION NOTES
lf design includes a pump, weep holes must be installed to allow pump lines to drain to minimize risk of
freezing. The pump shall have an audible and visual alarm notification in the event of excessively high-
water conditions and shall be connected to a control breaker separate from the high-water alarm breaker
and from any other control system circuits. The pump system shall have a switch so the pump can be
manually operated.
Excavation equipment must not drive in the excavation of the STA due to the potential to compact soil.
Extensions should be placed on all septic tank components to allow access to them from existing grade
Backfill over the STA must be uniform and granular with no material greater than minus 3-inch.
PageT
LIMITS:
The design is based on information submitted. lf soil conditions encountered are different from conditions
described in report, CBO lnc. should be notified. AIIOWTS construction must be according to the county
regulations. Requirements not specified in this report must follow applicable county regulations. The
contractor should have documented 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.
{'tx',ta }vth-t*g
Carla Ostberg, MPH, REHS
W" l{xnq
GARFIELD COUNTY BUILDING AND SANITATION DEPARTMENT
t08 Elghth Street, $ulte 201
Glon$rood Sprlngs, Coloradof 81601
Fhone t970) 945;8212
Permlt
Arsegsor's Parcel I'lo,
This doos not conslilute
a buildlng or use permil,INDIVIDUAL SEWAGE I}ISPOSAL PERMIT
FROPERTY
'r /'i 'i t
it
0wner's Name tt Fr6s6nl Addreis Pho
System Locatio".*-**.0 q l'r
.t
!! !
Legal Sescriptlon ot Assossor's Farcel No.
SYSTEM DESIGI'I ? rltre F,n*wvr'\*n, L*1\
-.;-----:- Septlc Tank Cepacity {gallon)
: l;
--'
--{.;-.'- Percolation Rate (mi nules/inch}
Ilequirod Absorption Area - $ee Attachsd
$pecial Selback Requirements:
lnspaclor
- 0ther
Numbsr ot Bodrooms (or olher)
, ; :' ll i,
Oale---- ,, ' .' ,r ' 'I
FINAL SYSTEM INSPECTION AND APPROVAL {as installed)
Call tor lnspeclion (24 hours notice) Before Covering lnstallation
Syst€m lnslallsr.-.--....
Sgptlc Tank Cap
$optic Tsnk Manulaclurer cr Trade Nnme
Ssplic Tank Access wllhin 8" of surlace
Ab$orption Area ..-.'.: . ,..
Absorption Area Type and/or Manufacturer or Trade Name
Adsquals compliancs with Counly and StatB rsgulations/t€qulreme
Dste ln$pector
Olhor --*-
tt t {aL RETAIN WITH NECEIPT BECORD$ AT CONSTRUCTION SITE
*CONDITIONS:
1. All installation must comply wiih all r€quir€meflt5 of ths oolorado stats Board ot Hesllh lndividual $owage Dlsposal systems chapler
25. Article 10 C.R.S' 19?3' Revised 1984.
?. This psrmit is vslid only for connection to $lructur6s which have lully compliod with County zonlog and building requiromonls. Con'
nection lo or use with any dwelling or slructures not approvod by lhe Building and Zoning oltic6 shall auioftallcally ba aviolalion or a
raquir6mont ol the permit and cau$e for both logsl actlon and rovocalion of tho permil'
3, Any person who oon$tructs, alt6rs, or inslall$ an lndlvidual soWagc disposal syslcm in a manner which involvas6 knowing and metsrial
varidtion trom ihe terms or spocilicatlon$ containod in tho appllcatidn ol permii commils a Class l, Petly Ol{onse {$500'00 tlne - I
months in iail or bolh).
While " APPLICANT Yellow. DEPARTMENT
INDIVIDUAL SE1VAGE DISPOSAT, SYSTEM APPLICATION
owNER ijutr- *,u.,r Jnqn ri ttltrC':itol{
-
noo*rrl # P,Jlogl{gg}d?egd
CONTRACTOR olu'tu*:t\
pERMrr REeuEsr FOR r$ Nnw INsTALLATICIN ( ) ALTERATIoN { ) RErAIR
Attach separate shccts or rcport sho,,ving entire arca with rcspect to surrounrling areas, topography of area, habitable
building, location of potable watcr wells, soil percolation test holes, soil profiles ir test holes (See page 4).
LocATIQjloF PROPpSED FACILITY: bf t{ f i$W
-St lf b lfLet /8 44!!
):l
6Xvrry*to,
Near what City of
Lsgal Description
WASTES TYPE:
orAddress Su f4 ,n1E Lul ,)A]it/t4.--
D4 DWELLTNG ( ) TRANSTENT USE La*t l-n
{ ) COMMERCTAT. OR rN}rJSTRrAt. t ) NON-DOMRSTIC WASTES
( ) OTHER-DESCRItsE
BUILDINC OR SERVICE TYPE: ..5rar &i-E L
Number ol'Bcdrooms umber of Persons "3
{)4 Carbage Grinder ( $ Automatic Washer {$) Dishwasher
SAU P!-Y: (K WELL ( ) sPRlNG ( ) STREAM ORCREEK
If supplied by Community Water, give name of supplier:
DISTANCE TO NEAREST COMMTINITV SEWER SYSTEM:3,6 Nrtxa
Was au cffort made to connect to the Cornmunity System 'l Np
A site plan is required to be_.tubr-niiled that indicates the following MINIMUM distances:
L.each Field to Well: 100 feet
Septic Tank to Well: 50 feet
Leach Field to lrigation Ditches, Stream or Wnter Course: 50 feet
Septie S.ystcm (septie tank & disposal field) to Property Lines: l0 feet
you.R rNpjyrpuAl SEwAGE*D_]gposat sy_sTEM paRs{rT wtLL NQT BE tssuED wrTllo_U T
A SITE Pr,A"N.
CRQTIND CONDITIONS:
Depth to first Ground Water Table
Percoat Cruund Slope_
2
TYPE OF INDIVIDTJAL SEWAGR NISPOSAL SYSTEM PROPO$ED:
()c) SEPTTC'I'ANK ( ) AERA'I'I()NPLAN'r
( ) VAULT PzuVY ( ) C0MPOSTING TOTLET
( ) PIT pRlvY i ) INCINERATION TOILET
Minutes inch in hole No. 2 Minutes
r ) CHEMICAL TOILETT ) OTHER.DESCRIBE
FINAL DISPOSAL BY:
il ABSOR}TION TRENCH, BF,D OR PIT
ff) L|NDERCRTIUNDDTSPERSAL
t ) ABOYE GROITND DISPERSAL
( ) OTHER-DESCRIB
WTLL EFFLUENT BE DISCH,{RCED DIRECTLY INTO WATERS OF TI-IE STATE? NIT'
PERCOL-AIION 'i'EST RE$IJIT$: (Io be ccmpleted by Registered Professional Engiueer, if thc Engineer does.the
Percolation Tasti
totinures-t*-.-*per inch in hole No. I Minutes )r'hole No.
()
()
()
{)
()
()
VAULT
RECYCLINC, POTABI-E USE
RECYCLING, OTHER USE
EVAPO'I'RANSPIRATION
SAND FITTER
WAS'IEWATER POI.ID
3
Name, address and telephone of RPE who made soil absorption tests:
Namc, address and tclcphone of RPE rcsponsible for design of the system
Applicant acknowledges that the cornpleteness of the application is conditional upon such further mandatcry and
additional tosts and reporls as may be required by the local heallh departrnent to be made alrd fumished by the applicant
or by the lccal hcalth deparlmart for purposed of thc evaluation of the application; and the issuancc of the permit is
subject to sueh terms and conditions es deemed necessary io insure compliance with rules and regulaticns madc,
infonnation and repcrts subrnitted herewith and requirul to be subrnitted by the applicant ire or will be represented to
be true and coruect to the best ofmy knowle<ige and belief and are designed to be relied on by the local departnrent of
health in cvaluaiing the same for purposas of issuing the permit applied tbr herein. I further understand that any
falsification or misrcpresentation rnay rcsult in tle dcnial of :he applicafion or rcvocation of any pcrmit grantcd based
upon said application and in legal action ibr perjury as provided by law.
Signed Date
MAP'I'O YOUR PROPERTY! !PLEASE:)AN
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70 County Road $iote the Road Number and Narne)Rnrq tg,k
Your Neighbor's
l'Iame & Address
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S"*r"well, all streams, irigation ditchs, and any water courses. Draw in your houss"
septic tank & systern, detached garages, and driveway"
If a change of location is neces:T.#,SiffffiJ;:flf*o drawing, before a
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G)qPublic.nef' Garfield County, Co
Account RO42343
Number
Parcel Number 212532200799
Acres 10
Land SqFt O
TaxArea O2O
2019 Mill Levv 6t5t7O
449 RAM LN
SILT
OwnerAddress KERANEN, JEREMY&
GLORIA
449 RAM LANE
srLT co 81652
Physical
Address
2019Total Actual
Value
Overview
Legend
l-l Parcels
Roads
Parcel/Account
Numbers
Owner Name
I r Lakes&Rivers
- CountyBoundary
Line
$688,450 Last2Sales
Date Price
,tto/2075 $464,000
6/!/2006 $175,000
81,652
Date gealed:5I24/2024
Last Data Uploaded: 5/24/2024 2:t8:56 AM
Deve I ooed bv1f, -) Fst gt"id*r
5124124, 11:22AM
Garfield County, CO
qPublic.net - Garfield County, CO - Property Record Card: R042343
Summary
Account
Parcel
Property
Address
Legal
Descrlption
Acres
Land SqFt
TaxArea
MlllLeW
Subdivblon
ActualValues
Assessed Year
Land Actual
lmprovement Actual
Total Actual
Assessed Values
Assess€d Year
Land Assessed
lmprovement fusessed
Total Assessed
TaxHistory
Bulldlng#
Units
BuildingType
Abstract Codes / (Prop€rty Type)
Archltectural Style
Storles
Frame
Actual Year Built
BasementArea
Gross Living Area
Total Heated SqFt
Bedrooms
Baths
Heating Fuel
HeatingType
Alr Condltlonint
RoofType
RoofCover
R042343
272532200t99
449 RAM LN, S|LT, CO 8r6s2
Section:32Township:5 Range: 91ATR lN SENENWCONT. 1O.21
AC AKA LOT4 PIFFERSUB-DIV EXEMPTION.
70.27
0
20
51.5170
Vlew Map
Owner
KERANEN, JEREMY & GLORIA
449 RAM LANE
stLTco 81652
Land
UnltType SINGLE FAM.RES.-LAND - 1112 (RESIDENTIAL PROPERTY)
SquareFet 0
Buildings
t
t
SFR
SINGLE FAM.RES-IMPROVEMTS-1212 (RESIDENTIAL PROPERTY)
1-STRY/BSM
I
WOODFRAME
2006
2,0!6
2,0L6
2,Ot6
3
2
GAS
FORCEDAIR
CENTRAL
RIDGE FRME
PRO PANEL
Tax Year
Taxes Billed
2024
$170,000.00
$518,4s0.00
$588,4s0.00
2024
$11,390.00
$34,740.OO
$4,6,130.q)
2023
$156,420.00
$477,030.0O
$533,450.00
20.23
$10,480.00
$31,960.00
t42,440.@
2023
$2,610.80
2022
$110,000.00
$378,74O.OO
$488.7r10.00
2022
$7,650.00
$26,320.O0
$33,970,00
2022
$2,2s3.48
2021
$110,000.00
$378,740.00
$488,740.OO
2021
$7,870.00
$27,080.00
s34,9s0.00
2021
2020
$100,000.00
$339,470.00
$43eA7O,OO
2020
$7,15o.00
$24,27O.OO
$31,420.00
2020
$2,132.88$2,670.72
https://qpublic.schneidercorp.com/Application.aspx?ApplD=1038&LayerlD=22381&PageTypelD=4&PagelD=9447&Q=1738926156&KeyValue=R0423... 'l13
5124124, 11:224M
Click hereto viewthe tax informationfor this parcel on the Garield C
Transfers
qPublic.net - Garfield County, CO - Propefi Record Card: R042343
Sale Date
9/70/2015
6tU2006
8/3!2005
8t3U2005
7/70/2005
u29/2004
lu24t2002
u28/2002
a2a/2002
425/2002
s/3u2000
st3u2000
uur900
7/U7900
Receptlon Number
867838
699282
681725
687724
666955
687990
620764
594293
s9a292
598291-
568839
568837
Book - Page Sale Prlce
$4640Ci0
Deed Type
Warranty Deed
WARRANWDEED
DECLAMTION
EASEMENT
RESOLUTION
POWEROFATTORNEY
EASEMENT
QUITCLAIM DEED
WARRANTYDEED
POWEROFATTORNEY
QUITCLAIM DEED
POWEROFATTORNEY
Deeds
Deeds
7806-777
7724-57
7724-53
76s5-225
1725-367
1433-973
1333-954
1333-952
1333-951
!205-575
1205-5L2
0457-O!O9
o22t-o249
$175,0OO
$o
$o
$o
$o
$o
$o
$o
$o
$o
$o
$o
$o
Property Related Public Documents
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Photos
Sketches
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5124124,11:22AM qPubllc.net - Garffeld County, CO - Property Record Card: R042343
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https://qpubtic,schneidercorp.com/Application.aspx?ApplD=1038&LayerlD=22381&PageTypelD=4&PagelD=9447&Q=1738926'l56&KeyValuo=R0423. '. 3/3
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/.l SITE PLAN
DRAWINGS MUST BE USED IN
CONJUNCTION WITH DESIGN
LETTER DATED O5I 1OI2O241',= 50' - O-
w1 .0
Sheet 1 0F 4
Date: OSl1Ol2O24
Designed by: CBO
Drawn by: DD
Keranen Residence
449 Ram Lane
Garfi eld County, Colorado
Project Number: C1877
CBO lnc.
129 Cains Lane
Carbondale, Colorado 81 623
Phone 970.309.5259
carla.ostberg@gmail.com
gl:
+
EXtSTtNG SEWER prpE TO REMATN (RECOMMEND
EXPLORING WITH CAMERA TO ASSURE IT IS IN GOOD CONDITION
STING 1 25o-GALLON, TWO.COMPARTMENT
fi
Ij
,1
I
SEPTIC TANK TO REMAIN
4'DIA SDR.35 SEWER LI
(MrN. 1% FALL TO STA)
NE TO STA :o
4'DIA SDR-35 SEWER LINE TO STA
(MrN. 1% FALL TO STA)DISTRIBUTION BOX
: WITH ACCESS AT GRADE
?'@.q
'QU ICK-4' CHAMBER TRENCHES.
6 TRENCHES WITH 19 CHAMBERS PER
FOR A TOTAL OF 114 CHAMBERS AND
1368 SF.
':5
,'.,,*".
EXISTING STA't TO BE ABANDONED
TRENCH I
OOL HOUSE
4- DIA SDR-35 DISTRIBUTION LINE TO EACH TRENCH'"i (M
"Yar:
IN. ,I% SLOPE TO TRENCH)
4" DIA SDR-35 INSPECTION PORT AT
BEGINNING AND END OF EACH TRENCH ,,4':
CBO lnc.
129 Cains Lane
Carbondale, Colorado 81623
Phone 970.309.5259
carla.ostberg @g mail.com
Keranen Residence
449 Ram Lane
Garfield County, Colorado
Project Number: C1877
Date: 0511012024
Designed by: CBO
Drawn by: DD
w2.0
Sheet 2 0F 4
I
3:
IIIIIIIIIIII II
IIIIIIIIIII
IIIIIIIIIIIIII
IIIIII
IIIIIII
IIIIIIIIII
INFILTRATOR
END PLATE
GRAVELLESS 'QUICK4'
CHAMBER (4'x 3')
FINISHED GRADE
4'DIA SDR.35
DISTRIBUTION LINE TO
EACH TRENCH
(MtN. 1olo SLOPE TO
TRENCH)
24'MtN.
19 CHAMBERS PER TRENCH
4'DIA SDR-35 SEWER LINE
(MlN 2% SLOPE TO TANK,
MtN. 1% TO STA)
4
PIPES PLACED IN
TOP PORT OF CHAMBER
END
PLATES
SCREENED
OR SAND FOR
BEDDING
3'MrN.
8'MtN.
DIA SDR-35 INSPECTION
4'DIA SDR-35 EFFLUENT
PIPE FROM SEPTIC TANK
PORT AT BEGINNING AND
END OF EACH TRENCH
DISTRIBUTION BOXWITH
ACCESS AT GRADE
BOXAND COVER BROUGHTTO GMDE
CONCRETE LID
FINSHED GRADE
+
BAFFLE OR
ANGLED PIPE
TO BE USED
AT INLET
L
DIA SDR-35
SCHEDULE 40
ENCASEMENT PIPE
END CAP MUST BE
GLUED OR SECURED
IN A WATER TIGHT
FASHION WITH
UNDERGROUND
SEALANT
INSPECTION
PORT H 40 RIGID END
4 max
L
UNDISTURB
SOIL
CAP AT EACH END
OF PIPE
LIMIT
2'minl 4' DIA SDR-35 SEWER LINE.
MUST REST ON BOTTOM
OF ENGASEMENT PIPE
HOLE DRILLED IN END
CAP MUST ONLY BE
LARGE ENOUGH TO
ALLOW SEWER LINE TO
FIT THROUGH
EXCAVATION
SCARIFY
GMVELLESS 'QUICK.4'
CHAMBER (4'x 3')
ACHAMBER TRENCH SECTION
\,7 Normru
BACKFILL
OUTLETS
oooo
CBO lnc.
129 Cains Lane
Carbondale, Colorado 81623
Phone 970.309.5259
carla.ostberg @gmail.com
Keranen Residence
449 Ram Lane
Garfield County, Colorado
Project Number: C1877
0511012024
by: CBO
rawn by: DD
w3.0
Sheet 3 0F 4
DESIGN
4.BEDROOM RESIDENCE
75 GPD x 2 PERSONS/BEDROOM x 3 BEDROOMS + 75 GPD (4th BEDROOM) +
1-BEDROOM ADU (150 GPD) =
WASTEWATER FLOW = 675 GPD
TANK:
MlN. 12s0-GALLON SEPTIC TANK MA|N HOUSE (USE EX|ST|NG SEPTTC TANK)
MIN. lOOO-GALLON SEPTIC TANK ADU
SOIL TREATMENT AREA (STA):
LONG TERM ACCEPTANCE RATE (LTAR) = 0.35 GAU SF
CALCULATED STA = Q/LTAR = 675 / 0.35 = 1928 SF
GRAVITY, TRENCHES = 1928 SF X 1.0 = 1928 SF
CHAMBERS =1928 SFX0.7= 1350 SF 112 SF/CHAMBER= 1'I3CHAMBERS
SIX GRAVELLESS CHAMBER TRENCHES
19'QUICK4'CHAMBERS IN EACH TRENCH
TOTAL 114 'QUICK 4' CHAMBERS
CHART
SOIL PROFILE TEST PIT NO. 1 SOIL PROFILE TEST PIT NO. 2
0 SLIP-ON PVCSMALL VALVE COVER
BOX OR IRRIGATION
VALVE BOX AT GRADE
DO NOT GLUE
1 LIGHT BROWN SILT CLAY LOAM LIGHT BROWN SILT CLAY LOAM
TTACH CAP OR THREADED
INSULATED COPPE
TMCERWIRE FINISHED GRADE2
3
4
5
6
7
8
9
10
CLEANOUT ASSEMBLY
4' DIA S
COMPACT SEWER LINEF
LrJ
IIJl!
I
IF(L
uJo
BASE TO SUPPORT
BOX
4' PVC PIPE CUT TO
FIT
USE HOLE SAW TO
CUT THRU TOP OF TO TANK HOUSE
-
END
AIL
NO GROUNDWATER OR BEDROCK ENCOUNTERED
DURING EXCAVATION
LEGEND
n silt clay
loam
OWTS COMPONENTS AND
PHYSICAL FEATURES
MINIMUM REQUIRED
SETBACK
APPROXIMATE PROPOSED
SETBACK
ADU TO SEPTIC TANK 5'76',
ADU SEPTIC TANKTO WELL 50'338'
SEPTIC TANK TO WATER COURSE 50'N/A
STA TO HOUSE 20'67'
STA TO WELL 100'221'
STA TO WATER COURSE 50'N/A
CBO lnc.
129 Cains Lane
Carbondale, Colorado 81 623
Phone 970.309.5259
carla.ostberg@gmail.com
Keranen Residence
449 Ram Lane
Garfield County, Colorado
Project Number: C1877
Date: 051'1012024
Designed by: CBO
Drawn by: DD
w4.0
Sheet 4 0F 4
Legend
I ugRam Ln
449 Ram Lane
Google Earth
O 2024 Airhus
JOB. NO: 15064
DATE:6/24/15
DWG BY: SRB
REV
IMPROVEMENT LOCATION CERTIFICATE
Lot 4, Piffer Subdiuision Exemption Map
Courttg of Garfield, State of Colorado
II .:
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.A 449 Ram Lane
667.77'
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PROPERTY DESCRIPTION:
91
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WF,SI OF NIA 6NI P.M AND BEINC MORE PAPI'CUWY DS@ A MU OM:
BF,GINNING AT NE NORETWESI @RNER OF NN XE1/4N81/4NT'1/4 OF SAID S!c.ITON 32
WIIEI]CE ND ilORDflilEs' C'i'pVER OI' SAD SEC'IO.IV 32 BEARS NORTI] 7125'56" WESI
2090,56 FtsE4 TITENCE NOR'}I a9"5758' MST 667,77 FF,AU tUptCA sotmt 01.5231'WESI
66.13 FEEX TI{ENCE ffitmt 89"56',37 WESI 667.72 FEEII TT ENCE NORT I 01"52'11" EASI
666,39 FEEITO fiIE F,INTOF B'r:TNN,J['G.
AI.SO KNOWN AS
ITN 4
AS SEOWN ON TI'E PIFFER SUBDMSIo.N WEUMON UAP
REEORDED SEFjEMBER 7,2OO5 AS RDCEP''ON NO, 6A172A
SURWYOR'S CERTIFICATE:
I SCOTI R MCW HEREBY CEEN,|y TTIAT THIS IMPrcVEMENT IT'CATON CERITFICATE
WAS PREPARAD IDX TSEE BEINV NAT TT IS NOTA LAND S[,N/EY PT,AT OR IMPROWWNT
SI]RWY PLAT, AND TTTAT N E NOT 10 M REUED UPON FOR TITE ESIIBUSHMENT OF FNCE,
BUDNO, OR ONER FUTI]RE IMPrcWMEITT
'.TNES.
I ilJFETR CEFNFY ITTATTHE
ulIuTv @NNrcITONS ARE EN''RELY WmtN mE BOUNDARIES OF nIE P,ARCEL, E TCEFI AS
SHOWN, MATTHM ARE NO ENCrcACHUEN1E IJPON ND DF.WM PREId.SAAEY
IMPROI,EMEI|IIS ON AIyAD.tO]LCp&EtfrSES, EI(CEPrAS INDICATE,D, AND TTI TmERE IS NO
APPARENT EVIDENCE OR SIGIV O,.ffiBSruEITTCROSSNVC OR AURDAIVIIfC M PRT OF
SAD PARCEL, E)rcEPIAS NOIE,D.
.&MMOIiWEALET rmE @MpAIly OFCARngn @UNTY, mC.
.oRDF,R NO, 15060541
'EFFECIIW DAIE: JUNE 16, 2015
scrofr R BLACI(ARD L.S. 38E42 DAN
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970-625- 7711/l/\t3$l
IMPROVEMENT LOCATIO N CERTIFICATE
Lot 4, Pilfer Subdiuision bcemption Map
Countu ofGarfield, State ofColomdo
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NofICE: ffiRDINc fo cObRADo LAY YOD tust CoPAENCE ANY
&AL ACfION BASAD UHN AM DEFM IN IBIS SURVEr
VITEIN TEREE lEAN AtrER YOU F]RSf DISCOVERED SUCE
DEFM. IN NO EVEM, TAY AN AC?IO{ BASED UHN Ifr
DEFET IN TEIS SURYEY EE COY{ErcED IORE |EAN TEN YEAN
TEE CERTIF]CA?ION SMTN EEMON.
s49.56 3?"V 667 72
449 Ram Lane
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