HomeMy WebLinkAboutEngineer's OWTS Design Planl(t^$j,ffif;ffiffi$fi**5020 County Road 154
Glenwood Springs, CO 81601
phone: (970) 945-7988
email : kaglenwood@kumarusa.com
www.kumarusa.com
An Employcc Owncd Compony
Office Locations: Denver (HQ), Parker, Colorado Springs, Fort Collins, Glenwood Springs, and Summit County, Colorado
May 28,2025
Brittany Melonuk
0960 County Road 107
Carbondale, Colorado 81 623
brittanvlacerte@gmail. com
Project No.23-7-124
Subject: Profile Pit Evaluations, Proposed Residence, 0960 County Road 107, Garfield
County, Colorado
Dear Brittany:
As requested, we are providing evaluations of profile pits for design of an onsite wastewater
treatment system (OWTS) at the subject site. This letter provides the findings of our study and
general classification of the subsoils at the soil treatment area (STA). The services are
supplemental to our agreement for professional engineering services to you dated January 19,
2023.
The field exploration for the OWTS was conducted on May 14,2025. Two profile pits (Profile
Pits 1 and 2) were excavated with an excavator at the approximate locations shown on Figure 1
to evaluate the subsurface conditions at the planned soil treatment area for the OWTS as
provided by you. The pits were logged by a representative of Kumar & Associates. Logs of
the profile pits are provided below.
of Profile Pit 1
of Profile Pit 2
The subsoils encountered, below about 1 foot of organic topsoil, consist of Sandy Loam to the
pit depths of 8 feet. Hydrometer and gradation analyses were performed on a disturbed bulk
sample of the soils obtained from Profile Pit 2 from 4 to 5 feet depth with the results presented
0-1'TOPSOIL; organic Loam, firm, moist, dark brown
1',-g'SANDY LOAM; gravelly, very stiff, slightly moist, pale red to pale brown , strong
blocky stru very calcareous.o Bottom of pit @ 8 feet.o No groundwater or redoximorphic features obserued at time of pit excavation.
0-1'TOPSOIL; organic Loam, firm, moist, dark brown
1'-g'SANDY LOAM; gravelly, very stiff, slightly moist, pale red to pale brown, strong
blocky structure, very calcareous.
o
a
a
Disturbed bulk sample obtained from 4 to 5 feet.
Boftom ot pit @ I feet.
No groundwater or redaximorqhic features obserued at time of pit excavation
Brittany Melonuk
May 28,2025
Project No.23-7-124
Page 2
on Figure 2. The tested sample classifies as Sandy Loam per the USDA system. No free water
nor indications of seasonal high groundwater were observed at the time of the pit excavations.
The soils were slightly moist to moist.
A design report will be needed for the County permitting and the installation of the OWTS. The
system should be designed by a registered professional engineer. lf you have any questions,
contact us.
lf you have any questions or need further assistance, please call our office.
Sincerely,
Kumar & Associates, lnc.
%*%'
Shane M. Mello, Staff Engineer
Reviewed by:
Robert L. Duran,
SMM/kac
attachments Profile Pits
Figure 2 Test Results
cc: Tate Civil- Tate Fairbanks (late@tatecivil.com)
$rc?g
Kumar & Associates, lnc.o
PROFILE
PIT 2
PROFILE
PIT 1
10050
0960 COUNTY ROAD 107
050
SCALE-FEET
23-7 -1 24 Kumar & Associates LOCATIONS OF PROFILE PITS Fig. 1
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DIAMETER OF
CLAY COBBLES
.fr)Z mm ,02 .05 .l
SAMPLE OF: SANDY LOAM
FROM: PROFILE PIT 2 AT .[ TO 5 FEET
.25 .5 t mm 20 76
ENTIRE SAMPLE
PARTICLE SIZE DISTRIBUTION %
COBBLES 0
GRAVEL 26
SAND 1l
SILT JO
CLAY 3
PORTION OF SAMPLE
PASSTNG #10 STEVE
PARTICLE SIZE DISTRIBUTION %
SAND 55
SILT 11
CLAY 1
TOTAL SAMPLE RETAINED ON #10 SIEVE: 26'{
PERCENT OF MATERTAL RETATNED ON #10 STEVE
PASSTNG 3/1" STEYE: 88%
NOTE: Hydrometer Anolysls wos performed on o
bulk somple lollowtng scrs€nlng of oll moterlol
lorger lhon the flo sieve (2.0 mm) per USDA
guidelines.
Thr$ lrlt rorull! opply only io lhe
sqmplo! whloh woro l€shd. Thc
losllng reporl shqll nol b! ruproduqld,
cxcepl ln tull, rlthout lho wrltlon
opprovql ot Kumor & Arloclqlrt, lnq.
Slevc onolysls l.stlng is p6rfom.d ln
occordoncc wllh Asltl D422, ASTta C156
dnd/or ASTII Dll/to.
HYDROMETER ANALYSIS SIEVE ANALYSIS
TIYE REDINGS
24 HRS 7 HRS
CLEAR SAUARE OFENIXGS
t/er r/a" 1 t /r. ln
SILT SAND GRAVEL
FINE co.V. FINE FINE MEDIt,'M co.u co.FINE MEDIUM COARSE
CRAIN SIZE(--)SIEVE SIZE % FINER
l27.OO 5"100
76.00 100
58.1 0 1 -1 /2"loo
19.05 3/4"97
9.50 3/8"92
1.75 *1 64
2.00 tl0 71
1.00 #18 6t
0.50 #55 62
0.25 #60 57
0.1 06 t|110 /+5
0.055 #270 33
GRAIN SIZE
(-m)TIME PASSED
(min)Z FINER
0.057 1 't5
0.019 I 9
0.009 t9 5
0.005 60 1
0,002 455 3
0.001 15/+5 2
23-7-124 Kumar & Associates USDA GRADATION TEST RESULTS Fis. 2
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SCF SCF SCF SCF SCF
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SCF SCF SCF SCF SCF
SCF
18
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'
Ø
4+82
0+00
1+00
2+00
3+00
4+00
S88° 38' 43"E
88.51'
N81° 32' 46"E
98.02'
N81° 32' 46"E
20.00'
ETCDS
>
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6''Ø
6
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Ø
6''Ø
8
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Ø
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6''
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6''Ø
6''Ø
6''Ø
6''Ø
EX. GRA
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See the
Enlarged
Grading Plan
PROPOSED
OWTS SYSTEM
(SEE OWTS PLANS)
#100
6631.55'
#101
6627.93'
#102
6622.63'
#103
6616.87'
#104
6616.30'
#105
6616.57'
#106
6617.60'
#50
#51
#53
#52
#107
6618.00'
#108
6633.00'
#109
6632.17'
NOTES:
PROPERTY LINES ARE BEYOND THE
MAPPED AREA. SEE SHEET C.5 FOR
PROPERTY LINES LOCATION.
20'
7
0
'
20
'
20
'
MATCH INTO
EX. DRIVEWAY
8
7
2
5
4
R28'
R28'
R20'
8
7 7
R15'
7
7
2
2
R20'
PROPOSED BACKWASH
AND/OR FLUSHING
INFILTRATION SYSTEM
(SEE OWTS PLANS)
7
7 6625
6610
6615
6625
6605
6610
6615
6620
6625
6630
6635
6630
6630
3
:
1
3
:
1
3
:
1
3:
1
2:1
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3
1
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15
15
14
663
0
66
2
5
6615
6615
6620
6625
BP
:
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0
0
.
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EP: 4+81.75
P
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:
4
+
6
1
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7
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PI:
0
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7
4
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9
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Profile: DRIVE, Sta:0+00 to Sta:4+82
Scale: Vert.=20', Horiz.=20'
6600
6610
6620
6630
6640
6650
6600
6610
6620
6630
6640
6650
Pr
:
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7
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6
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:
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9
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:
6
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:
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:
6
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Pr
:
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6
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8
5
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8
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:
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6
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5
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9
4
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:
6
6
1
5
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3
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Pr
:
6
6
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6
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4
3
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:
6
6
1
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:
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5
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:
6
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:
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6
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4
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:
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:
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-5.52%2.00%1.05%
-2.00%
PV
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6
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:
6
6
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LVC: 40.00'
PVI STA: 1+66.46
PVI ELEV: 6621.30
K: 8.93
LPE: 6620.20
LPS: 1+86.46
BV
C
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1
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4
6
.
4
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:
6
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:
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C
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:
6
6
2
0
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2
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LVC: 80.00'
PVI STA: 2+70.00
PVI ELEV: 6615.59
K: 12.18
LPE: 6615.94
LPS: 2+97.21
BV
C
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:
2
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3
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:
6
6
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C
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:
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EV
C
E
:
6
6
1
6
.
0
1
LVC: 48.00'
PVI STA: 0+80.00
PVI ELEV: 6629.95
K: 6.00
HPE: 6630.43
HPS: 0+56.00
BV
C
S
:
0
+
5
6
.
0
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BV
C
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:
6
6
3
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5
5
EX. SURFACE
PR. SURFACE
Point Table
Point #
50
51
52
53
100
101
102
103
104
105
106
107
108
109
Desc.
Grid B-4
Grid E-4
Grid E-1
Grid B-1
Match
CL-Drive
CL-Drive
CL-Drive
CL-Drive
CL-Drive
CL-Drive
CL-Drive
Match
Match
Elev.
6617.50'
6617.50'
6617.89'
6618.42'
6631.55'
6627.93'
6622.63'
6616.87'
6616.30'
6616.57'
6617.60'
6618.00'
6633.00'
6632.17'
North
-470.78
-430.89
-418.26
-458.16
-419.14
-442.64
-455.19
-467.68
-469.77
-468.18
-453.77
-450.83
-417.60
-398.41
East
23743.17
23737.24
23835.78
23841.71
23265.14
23362.33
23414.23
23509.37
23597.86
23623.46
23720.42
23740.20
23224.24
23338.64
37110DERIC J O N WA
L
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R
COL O R A D O LICE
N
S
E
D
P
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O
F
E
SSIONA L E N G INEER
7/24/25
00 20'40'
Scale: 1" = 20'
NORTH
923 Cooper Avenue, Ste. 201
Glenwood Springs, CO 81601
tele: 970.945.5252
www.bu-inc.com
Engineer or Surveyor Seal
Sheet
Client Information:
Project No.:
Filename:
Designer:
Drafter:
Date:
N:
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Subsurface Utility Engineering (SUE)
Required Project:
If "Yes", SUE Certification by:
Firm:
Job #:
Date:
Agency Approval
Agency:
Dept:
By:
Date:
Comments:
RevisionDate
----
----
----
----
7/24/25
RTC
DJW
25012-v-topo.dwg
25012
805.705.1511
CARBONDALE, CO 81623
960 COUNTY ROAD 107
BRITTANY & TAYLOR MELONUK
CA
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NOTES:
1.THIS PLAN SET IS INTENDED TO BE PLOTTED IN COLOR. FAILURE TO DO SO MAY
RESULT IN MISSING DATA & INFORMATION CRITICAL TO THE PROJECT.
2.SURVEY INFORMATION BASED ON THE USGS LIDAR AND GARFIELD COUNTY GIS.
3.SEE ARCHITECTURAL, LANDSCAPING AND AND STRUCTURAL ENGINEERING PLANS
FOR ADDITIONAL BUILDING AND LANDSCAPE INFORMATION.
4.SEE ADDITIONAL NOTES ON REMAINING PLAN SHEETS.
5.ALL DEMOLITION AND CONSTRUCTION SHALL MEET OR EXCEED THE CURRENT
CONSTRUCTION AND DESIGN STANDARDS ESTABLISHED BY THE COUNTY AND BE
SUBJECT TO OBSERVATION BY THE COUNTY AND THE PROJECT ENGINEER.
6.THIS DESIGN WAS PREPARED WITHOUT THE BENEFIT OF A SUBSURFACE UTILITY
ENGINEERING (SUE) STUDY OR MAP. THIS DESIGN HAS BEEN PREPARED FOR A
PRIVATE DEVELOPMENT USING EXISTING UTILITY INFORMATION PROVIDED BY OTHERS.
EXISTING UTILITIES ARE SHOWN AS THEY ARE BELIEVED TO EXIST, BUT MAY NOT
REPRESENT ACTUAL FIELD CONDITIONS. BOUNDARIES UNLIMITED INC. DID NOT
CONFIRM ANY DATA PROVIDED OR PERFORM ANY ADDITIONAL RESEARCH OR
NOTIFICATION TO ELEVATE THESE PLANS TO SENATE BILL 18-167 STANDARDS. AS
SUCH, BOUNDARIES UNLIMITED INC. MAKES NO GUARANTY, EXPRESSED OR IMPLIED,
FOR THE LOCATION OF SUBSURFACE UTILITIES CONTAINED WITHIN THIS PLAN SET. IF
THE CLIENT AND/OR CONTRACTOR REQUIRES A SUBSURFACE UTILITY ENGINEERING
STUDY OR MAP FOR FULL COMPLIANCE WITH SENATE BILL 18-167, THEN A MORE
EXHAUSTIVE
7.PRIOR TO ANY EXCAVATION, CONTRACTOR SHALL CONTACT ALL APPROPRIATE UTILITY
COMPANIES FOR LINE LOCATIONS. CONTRACTOR SHALL NOTIFY PROJECT ENGINEER
OF ANY POTENTIAL CONFLICTS PRIOR TO UTILITY CONSTRUCTION SO THAT LINE OR
GRADE CHANGES CAN BE MADE TO AVOID A CONFLICT WITH ANY EXISTING UTILITY.
THE CONTRACTOR SHALL PROTECT ALL EXISTING UTILITIES FROM DAMAGE DURING
CONSTRUCTION AND, AT NO EXPENSE TO THE CLIENT OR PROJECT ENGINEER, REPAIR
ANY DAMAGED UTILITIES.
8.ALL EXCAVATIONS FOR UTILITY LINES, RETAINING WALLS, ROADWAYS, BUILDING
STRUCTURES, DRAINAGE FACILITIES AND TRENCHES, ALONG WITH WORK IN GENERAL,
SHALL MEET THE REQUIREMENTS OF THE OCCUPATIONAL SAFETY AND HEALTH
ADMINISTRATION (OSHA), COLORADO INDUSTRIAL COMMISSION, OR THE COLORADO
DIVISION OF MINES, WHICH EVER APPLIES. SAFETY IS THE CONTRACTOR'S
RESPONSIBILITY. NO OTHER PARTIES ARE RESPONSIBLE FOR SAFETY IN, ON OR
ABOUT THE SITE, NOR FOR COMPLIANCE BY THE APPROPRIATE PARTY WITH ANY
REGULATIONS RELATING HERETO.
9.COMPACTION SHALL MEET OR EXCEED COUNTY AND UTILITY PROVIDER
REGULATIONS. THE MINIMUM COMPACTION STANDARD SHALL BE 95% STANDARD
PROCTOR UNLESS OTHERWISE SPECIFIED IN THE PLANS OR BY A GEOTECHNICAL
ENGINEER.
10.THE CONTRACTOR SHALL CONTAIN HIS CONSTRUCTION ACTIVITIES TO THE AREA
WITHIN THE STREET RIGHT OF WAY AND PROPERTY OWNED, OR EASEMENTS
PROVIDED TO OWNER. THE CONTRACTOR SHALL NOT OPERATE OUTSIDE THIS AREA
WITHOUT THE PRIOR CONSENT OF THE PROPERTY OWNER INVOLVED. ANY DAMAGE
TO PRIVATE PROPERTY BY THE CONTRACTOR OUTSIDE THESE LIMITS WITHOUT THE
PERMISSION OF THE PRIVATE PROPERTY OWNER WILL BE THE RESPONSIBILITY OF THE
CONTRACTOR.
11.THE CONTRACTOR SHALL ENSURE DRAINAGE AWAY FROM ALL STRUCTURES IN ALL
DIRECTIONS. DO NOT ALLOW WATER TO POND ON-SITE. PROVIDE SWALES TO
DRAINAGE STRUCTURES AND RUNOUT. SHALLOW DRAINAGE SWALES HAVE A
TENDENCY OVER TIME TO FILL IN & BECOME LESS EFFECTIVE. PERIODIC
MAINTENANCE, AT LEAST TWICE A YEAR, IS NECESSARY TO CHECK THE INTEGRITY OF
THE SWALE & MAINTAIN DRAINAGE CHARACTERISTICS.
12.THE CONTRACTOR SHALL AT ALL TIMES KEEP TWO FULL SETS OF CONTRACT
DRAWINGS MARKED UP TO INDICATE THE AS-BUILT CONDITIONS. THE DRAWINGS
SHALL BE PROVIDED TO THE OWNER AND THE ENGINEER UPON COMPLETION OF THE
WORK. WHERE PRACTICAL, THE CONTRACTOR IS TO PROVIDE AT LEAST TWO TIES
FROM PHYSICAL MONUMENTS TO ALL FITTINGS, VALVES, MANHOLES, AND THE END
OF ALL SERVICE LINES.
13.ON-SITE OBSERVATIONS AND REVIEW CONDUCTED BY THE CITY/COUNTY OR THE
PROJECT ENGINEER OF CONSTRUCTION WORK IN PROGRESS ARE NOT TO BE
CONSTRUED AS A GUARANTEE OR WARRANTY BY THE COUNTY OR THE PROJECT
ENGINEER OF THE COMPLETED WORK AND THE CONTRACTOR'S RESPONSIBILITIES.
14.THE CONTRACTOR SHALL TAKE ALL APPROPRIATE PRECAUTIONS TO SIGNIFICANTLY
REDUCE ANY POTENTIAL POLLUTION CAUSED BY HIS ACTIVITIES, INCLUDING VEHICLE
FUELING, STORAGE OF FERTILIZERS OR CHEMICALS, ETC. THE CONTRACTOR SHALL
HAVE IDENTIFIED PROCEDURES FOR HANDLING POTENTIAL POLLUTANTS AND
IDENTIFIED SPILL PREVENTION AND RESPONSE PROCEDURES PRIOR TO ANY
ACTIVITIES AT THE PROJECT SITE.
15.THE CONTRACTOR SHALL NOT SCALE DRAWINGS FOR CONSTRUCTION PURPOSES.
ANY MISSING DIMENSIONS OR DISCREPANCIES IN PLANS, FIELD STAKING, OR
PHYSICAL FEATURES SHALL BE BROUGHT TO THE ATTENTION OF THE PROJECT
ENGINEER. IF THE CONTRACTOR PROCEEDS WITH THE WORK WITHOUT NOTIFYING
THE ENGINEER, HE DOES SO AT HIS OWN RISK.
16.DISPOSAL OF TRASH, ASPHALT, CONCRETE AND CONSTRUCTION DEBRIS IS THE
CONTRACTORS RESPONSIBILITY AND SHALL BE CONSIDERED PART OF THE WORK.
17.ALL PRODUCT INFORMATION SHOWN IS AS PROVIDED BY THE MANUFACTURER. THE
CONTRACTOR IS RESPONSIBLE FOR REVIEWING AND COMPLYING WITH THE
MANUFACTURER'S RECOMMENDATIONS AND SPECIFICATIONS FOR THE INSTALLATION
OF ALL MATERIALS WITH SPECIAL ATTENTION TO PROPER SEALING OF MATING
SURFACES. THE CONTRACTOR SHALL IMMEDIATELY CONTACT THE ENGINEER IF ANY
DISCREPANCIES ARE FOUND BETWEEN THE DELIVERED PRODUCTS AND THOSE
SHOWN ON THIS PLAN.
18.FOUNDATION DESIGNS AND SUBSURFACE DRAINAGE, IF APPLICABLE TO BE OBTAINED
FROM THE PROJECT STRUCTURAL ENGINEER.
19.ANY STORM DRAIN PIPES SHALL BE INSTALLED WITH 1% MINIMUM SLOPE TO THE
OUTFALL POINTS. HEAT TAPE IS RECOMMENDED IN ALL EXTERIOR ROOF GUTTERS,
DRAIN PIPES, AREA DRAINS, TRENCH DRAINS AND GRATED STRUCTURES.
20.ACCUMULATED SNOWFALL SHALL BE REMOVED TO GRASS AREA TO ENSURE THAT
PROPER DRAINAGE AWAY FROM THE BUILDING IS MAINTAINED
21.ALL PIPES SHALL BE INSTALLED WITH WATERTIGHT CONNECTIONS.
960 County RD 107, Carbondale, CO
County of Garfield,
State of Colorado
Parcel No: 2393-224-00-301 Vicinity Map
NOTES:
THIS PLAN SET IS INTENDED TO BE PLOTTED IN
COLOR. FAILURE TO DO SO MAY RESULT IN MISSING
DATA & INFORMATION CRITICAL TO THE PROJECT.SITE
PROPOSED CONCRETE
SL SL SL
WS WS WSWM
DS
5545
LEGEND
5544
X X X
G G
SL
FLAGNOTE
EXISTING CONTOUR
PROPOSED CONTOUR
PROPERTY LINE
SETBACK/ENVELOPE
EASEMENT
EXISTING FENCE
EXISTING/PROPOSED WATER SERVICE/SHUTOFF/METER
EXISTING/PROPOSED SEWER SERVICE/CLEANOUT
EXISTING/PROPOSED GAS
GENERAL DIRECTION OF FLOW
PROPOSED DOWNSPOUT/RAIN CHAIN
T CE EXISTING/PROPOSED UTILITY PEDESTALS & METERSTCEGMEM
W W W EXISTING WATER MAIN/VALVE
SCF SCF PROPOSED SEDIMENT CONTROL FENCING
3
EXISTING/PROPOSED CULVERT/STORM PIPE & SIZE
EXISTING/PROPOSED TELECOMMUNICATIONS
EXISTING/PROPOSED ELECTRICE
T
ROCK SOCK OR EROSION LOG
E
T
/
/
/
/
/
/
PROPOSED FOUNDATION DRAIN
C/O
>>>>PROPOSED SWALE/DITCH FLOWLINE
BOULDER REINFORCED SLOPE
EXISTING/PROPOSED GRAVEL
EROSION CONTROL FABRIC
Carbondale
Highway-82
to
Glenwood
Springs
FLAGNOTES:
CONSTRUCT GRAVEL DRIVEWAY (SEE DETAIL).
2:1 SLOPE AND USE 1:1 BOULDER REINFORCED SLOPE DETAIL IN THE FIELD IF/WHEN DESIRED TO PROTECT AN EXISTING TREE.
FIRE TRUCK TURNAROUND (SEE ENLARGED GRADING ON SHEET C.2)
EX. OVERHEAD UTILITY. INSTALL THE METER PER UTILITY OWNER STANDARDS AND EXTEND SERVICES TO BUILDING. PROVIDE COMMON
TRENCH WHERE UTILITY PROVIDER REGULATIONS ALLOW AND MAINTAIN COVER & CLEARANCES BETWEEN/OVER NEW SERVICES PER
THE UTILITY PROVIDER'S RULES AND REGULATIONS.
EXISTING POTABLE WATER WELL/SERVICE. INSTALL A NEW 1"Ø WATER SERVICE USING AWWA PURECORE (200 PSI) AND EXTEND TO
THE MECHANICAL ROOM.
INSTALL 30 LF 18"Ø ADS N-12-WT CULVERT WITH FLARED END SECTIONS; INV. IN=6613.24'; INV. OUT=6612.64'. INSTALL 4'x6' OF 9Ø
NOMINAL RIPRAP BELOW THE OUTLET.
INSTALL TEMPORARY EROSION LOGS IN SWALES/DITCHES EVERY 40 LF, TYP. (SEE DETAIL)
INSTALL TEMPORARY SEDIMENT CONTROL FENCING ALONG THE LOWER LIMITS OF ALL DISTURBANCES (SEE DETAIL).
FOUNDATION DRAIN SYSTEM (RE: STRUCTURAL). SLOPE AT 0.5% MIN TO DAYLIGHT. EXTEND TO DAYLIGHT WITH 4"Ø SOLID SDR35 PVC.
CONCRETE DRIVEWAY APRON (6" THICK x 20'W x 40'L. SLOPE AT 2% MIN. AWAY FROM THE STRUCTURE).
INSTALL ROOF DOWNSPOUT AND EXTEND TO THE NEAREST SWALE AT 2% MIN.
SLOPE THE HARDSCAPE AT 2% MIN. AWAY FROM THE STRUCTURE.
GRADE AROUND (SLOPE DOWN) THE PERIMETER OF BUILDING AS NECESSARY AT 5% FOR 10-FEET-MIN. IN UNPAVED AREAS TO ENSURE
PROPER DRAINAGE AWAY FROM THE FOUNDATION. FOLLOW ALL RECOMENDATIONS OF THE GEOTECHNICAL REPORT. SLOPE AT 2% MIN.
BEYOND 10'.
CONSTRUCT 12" DEEP DRAINAGE SWALE, MIN., 3:1 MAX SIDE SLOPES.
3:1 CATCH SLOPE. SEED WITH A NATIVE GRASS SEED MIXTURE (RE: LANDSCAPE) AND HYDROMULCH (FLEXTERRA HP-FGM) OR COVER
WITH A TEMPORARY 24 MONTH EROSION CONTROL FABRIC (NORTH AMERICAN GREEN SC150).
INSTALL 2" CONDUIT FOR FUTURE ELECTRICAL SERVICE FROM CRAWLSPACE.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
kWh
ETC ETC ETC ETC ETC ETC ETC ETC ETC ETC ETC ETC ETC ETC ETC
ETC
ETC
ETC
ETC
ETC
WS
WS
WS
WS
WS
WS
WS
WS
WS
WS
WS
WS
W
S
W
S
W
S
W
S
W
S
W
S
W
S
W
S
W
S
W
S
W
S
W
S
W
S
WS
WS
WS
WS
WS
W
S
ETC
C/O
>>>>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>>
>
>
>
>
>
>>>>>>>>
W
FG: 6618.42'
FG: 6618.42'
FG: 6618.42'FG: 6618.42'
FG: 6618.42'
F
G
:
6
6
1
7
.
5
0
'
F
G
:
6
6
1
7
.
5
0
'
FG: 6617.81'
20'
4
'
'
S
S
4
'
'
S
S
4
'
'
S
S
4
'
'
S
S
4
'
'
S
S
1
4
.
0
%
EMERGENCY FIRE
TRUCK TURNAROUND
(NO PARKING)
3
:
1
3
:
1
2
0
'
COVERED
HARDSCAPE
PATIO
7
0
'
DS
DS
D
S
DS
DS
DS
DS
DS
C/O
SCF
SCF SCF SCF
SC
F
S
C
F
S
C
F
S
C
F
S
C
F
S
C
F
S
C
F
SCF
#120
6616.24'
#121
6615.44'
#122
6614.56'
#123
6614.76'
#124
6615.23'
#125
6617.28'
#126
6617.00'
#127
6616.95'
#128
6616.90'
#129
6616.86'
#130
6616.30'
#150
6617.50'
#151
6617.50'
#152
6618.42'
#153
6618.42'
#154
6617.83'
#155
6617.83'
#156
6618.42'
#157
6618.22'
#158
6618.22'
#159
6618.42'
#160
6618.42'
#161
6618.42'
#162
6617.50'
#163
6618.18'
ETC
ETC
DS
>>>
>>>
6''Ø
6''Ø
6''Ø6
'
'
Ø
6
'
'
Ø
6
'
'
Ø
6''Ø
6''Ø
6''Ø
6''Ø
8
'
'
Ø
8
'
'
Ø
8
'
'
Ø
8
'
'
Ø
8
'
'
Ø
8
'
'
Ø
8
'
'
Ø
8
'
'
Ø
8
'
'
Ø
8
'
'
Ø
8
'
'
Ø
6''Ø
6''Ø
6''Ø 6''
Ø
6''Ø
6''Ø
6''Ø
6''Ø
6''Ø
6''Ø
6''Ø
6''Ø
6''Ø
Garage
FF: 6618.0'Main Level
FF: 6618.5'
12'x24' SHED TO BE
RELOCATED TO THIS
AREA DURING
CONSTRUCTION.
3:1
6
.
7
L
F
6
.
4
L
F
13.5 LF
31.2 LF
8
.
0
L
F
31.0 LF 4
.
5
L
F
3
2
.
2
L
F
6.3
L
F
37.0 LF
7.8
L
F
1
0
0
.
9
L
F
9
9
9
9
9
9
9
10
11
11
11
11
11
11
12
12
12
12
13
13
14
15
15
9
9
9
11
2
2
16
28.9 LF
4.
7
L
F
6.
0
L
F
20'
3:1
R28'
R28'
R20'
8
7
12"Ø DOME GRATE AREA INLET
W/ 6"Ø SDR35 PVC AT 2% MIN.
TO THE SWALE.
RIM ELEV: 6617.20'
INV ELEV: 6614.87'
12"Ø DOME GRATE AREA INLET
W/ 6"Ø SDR35 PVC AT 2% MIN.
TO THE SWALE.
RIM ELEV: 6617.20'
INV ELEV: 6613.40'
BEND
INV:6613.04'
BEND
INV:6612.79'
DAYLIGHT
INV: 6610.80'
7
7
5
BEND
INV:6612.17'
BEND
INV:6611.58'
BEND
INV:6616.34'
BEND
INV:6615.72'
INV:6615.27'
R20'
12"Ø DOME GRATE AREA INLET
W/ 6"Ø SDR35 PVC AT 2% MIN.
TO THE SWALE.
RIM ELEV: 6617.20'
INV ELEV: 6614.19'
BEND
INV:6615.03'
BEND
INV:6614.56'
BEND
INV:6614.35'
BEND
INV:6614.44'
BEND
INV:6613.61'
BEND
INV:6613.46'
11
12"Ø DOME GRATE AREA INLET
W/ 6"Ø SDR35 PVC AT 2% MIN.
TO THE SWALE.
RIM ELEV: 6617.20'
INV ELEV: 6612.92'
6625
6620
6610
6615
6610
6615
6625
6630
6630
6615
6615
6620
6625
4
'
'
S
S
4''SS
4''SS
4''SS
4''SS
4''SS
4''SS
4
'
'
S
S
4
'
'
S
S
4
'
'
S
S
4
'
'
S
S
4
'
'
S
S
4
'
'
S
S
7
N
O
E
O
E
O
E
O
E
O
E
O
E
O
E
O
E
E
T
C
ETC ETC ETC ETC ETC ETC ETC ETC ETC
ETC
>
>
>
>
>>
>
>>>>>>>
4
'
'
S
S
4
'
'
S
S
>
DS
R28'
R28'
Pumper Fire Truck-RFFRA-E42
18
'
'
Ø
DS
6
'
'
Ø
7
0
'
20'
4''SS
4''SS
Point Table
Point #
120
121
122
123
124
125
126
127
128
129
130
150
151
152
153
154
155
156
157
158
Desc.
FG
FG
FG
FG
FG
FG
FG
FG
FG
FG
FG
FG
FG
FG
FG
FG
FG
FG
FG
FG
Elev.
6616.24'
6615.44'
6614.56'
6614.76'
6615.23'
6617.28'
6617.00'
6616.95'
6616.90'
6616.86'
6616.30'
6617.50'
6617.50'
6618.42'
6618.42'
6617.83'
6617.83'
6618.42'
6618.22'
6618.22'
North
-477.79
-501.65
-523.41
-520.47
-508.76
-476.95
-437.02
-441.02
-447.26
-451.23
-458.29
-430.89
-426.72
-438.59
-430.55
-420.66
-418.26
-458.16
-467.91
-470.26
East
23627.98
23656.79
23660.03
23679.81
23678.07
23701.65
23695.97
23686.62
23678.61
23669.52
23621.99
23737.24
23765.27
23767.03
23821.10
23819.63
23835.78
23841.71
23843.00
23827.17
Point Table
Point #
159
160
161
162
163
Desc.
FG
FG
FG
FG
FG
Elev.
6618.42'
6618.42'
6618.42'
6617.50'
6618.18'
North
-460.56
-458.58
-466.48
-470.78
-478.18
East
23825.56
23825.26
23772.12
23743.17
23773.86
00 10'20'
Scale: 1" = 10'
37110DERIC J O N WA
L
T
E
R
COL O R A D O LICE
N
S
E
D
P
R
O
F
E
SSIONA L E N G INEER
7/24/25
NORTH
923 Cooper Avenue, Ste. 201
Glenwood Springs, CO 81601
tele: 970.945.5252
www.bu-inc.com
Engineer or Surveyor Seal
Sheet
Client Information:
Project No.:
Filename:
Designer:
Drafter:
Date:
N:
\
P
R
O
J
E
C
T
S
\
2
0
2
5
\
2
5
0
1
2
-
M
e
l
o
n
u
k
A
D
U
\
d
w
g
\
2
5
0
1
2
-
V
-
T
o
p
o
.
d
w
g
7/
2
4
/
2
0
2
5
2
:
1
8
P
M
Subsurface Utility Engineering (SUE)
Required Project:
If "Yes", SUE Certification by:
Firm:
Job #:
Date:
Agency Approval
Agency:
Dept:
By:
Date:
Comments:
RevisionDate
----
----
----
----
7/24/25
RTC
DJW
25012-v-topo.dwg
25012
805.705.1511
CARBONDALE, CO 81623
960 COUNTY ROAD 107
BRITTANY & TAYLOR MELONUK
CA
R
B
O
N
D
A
L
E
,
C
O
----
Co
n
s
t
r
u
c
t
i
o
n
S
e
t
En
l
a
r
g
e
d
S
i
t
e
&
G
r
a
d
i
n
g
P
l
a
n
96
0
C
o
u
n
t
y
R
o
a
d
1
0
7
C.2
NO
N/A
N/A
N/A
:35.7°Steering Angle
3.33'20.83'
9.72'
8.17'
6.0
Carbondale: Station #42 feet
:
:
:
Width
Track
Lock to Lock Time
32.00'
Scale: 1"=20'
FIRE TRUCK TURNING MOVEMENTS
FLAGNOTES:
CONSTRUCT GRAVEL DRIVEWAY (SEE DETAIL).
2:1 SLOPE AND USE 1:1 BOULDER REINFORCED SLOPE DETAIL IN THE FIELD IF/WHEN DESIRED TO PROTECT AN EXISTING TREE.
FIRE TRUCK TURNAROUND (SEE ENLARGED GRADING ON SHEET C.2)
EX. OVERHEAD UTILITY. INSTALL THE METER PER UTILITY OWNER STANDARDS AND EXTEND SERVICES TO BUILDING. PROVIDE COMMON
TRENCH WHERE UTILITY PROVIDER REGULATIONS ALLOW AND MAINTAIN COVER & CLEARANCES BETWEEN/OVER NEW SERVICES PER
THE UTILITY PROVIDER'S RULES AND REGULATIONS.
EXISTING POTABLE WATER WELL/SERVICE. INSTALL A NEW 1"Ø WATER SERVICE USING AWWA PURECORE (200 PSI) AND EXTEND TO
THE MECHANICAL ROOM.
INSTALL 30 LF 18"Ø ADS N-12-WT CULVERT WITH FLARED END SECTIONS; INV. IN=6613.24'; INV. OUT=6612.64'. INSTALL 4'x6' OF 9Ø
NOMINAL RIPRAP BELOW THE OUTLET.
INSTALL TEMPORARY EROSION LOGS IN SWALES/DITCHES EVERY 40 LF, TYP. (SEE DETAIL)
INSTALL TEMPORARY SEDIMENT CONTROL FENCING ALONG THE LOWER LIMITS OF ALL DISTURBANCES (SEE DETAIL).
FOUNDATION DRAIN SYSTEM (RE: STRUCTURAL). SLOPE AT 0.5% MIN TO DAYLIGHT. EXTEND TO DAYLIGHT WITH 4"Ø SOLID SDR35 PVC.
CONCRETE DRIVEWAY APRON (6" THICK x 20'W x 40'L. SLOPE AT 2% MIN. AWAY FROM THE STRUCTURE).
INSTALL ROOF DOWNSPOUT AND EXTEND TO THE NEAREST SWALE AT 2% MIN.
SLOPE THE HARDSCAPE AT 2% MIN. AWAY FROM THE STRUCTURE.
GRADE AROUND (SLOPE DOWN) THE PERIMETER OF BUILDING AS NECESSARY AT 5% FOR 10-FEET-MIN. IN UNPAVED AREAS TO ENSURE
PROPER DRAINAGE AWAY FROM THE FOUNDATION. FOLLOW ALL RECOMENDATIONS OF THE GEOTECHNICAL REPORT. SLOPE AT 2% MIN.
BEYOND 10'.
CONSTRUCT 12" DEEP DRAINAGE SWALE, MIN., 3:1 MAX SIDE SLOPES.
3:1 CATCH SLOPE. SEED WITH A NATIVE GRASS SEED MIXTURE (RE: LANDSCAPE) AND HYDROMULCH (FLEXTERRA HP-FGM) OR COVER
WITH A TEMPORARY 24 MONTH EROSION CONTROL FABRIC (NORTH AMERICAN GREEN SC150).
INSTALL 2" CONDUIT FOR FUTURE ELECTRICAL SERVICE FROM CRAWLSPACE.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
00 10'20'
Scale: 1" = 10'
37110DERIC J O N WA
L
T
E
R
COL O R A D O LICE
N
S
E
D
P
R
O
F
E
SSIONA L E N G INEER
7/24/25
NORTH
923 Cooper Avenue, Ste. 201
Glenwood Springs, CO 81601
tele: 970.945.5252
www.bu-inc.com
Engineer or Surveyor Seal
Sheet
Client Information:
Project No.:
Filename:
Designer:
Drafter:
Date:
N:
\
P
R
O
J
E
C
T
S
\
2
0
2
5
\
2
5
0
1
2
-
M
e
l
o
n
u
k
A
D
U
\
d
w
g
\
2
5
0
1
2
-
V
-
T
o
p
o
.
d
w
g
7/
2
4
/
2
0
2
5
2
:
1
8
P
M
Subsurface Utility Engineering (SUE)
Required Project:
If "Yes", SUE Certification by:
Firm:
Job #:
Date:
Agency Approval
Agency:
Dept:
By:
Date:
Comments:
RevisionDate
----
----
----
----
7/24/25
RTC
DJW
25012-v-topo.dwg
25012
805.705.1511
CARBONDALE, CO 81623
960 COUNTY ROAD 107
BRITTANY & TAYLOR MELONUK
CA
R
B
O
N
D
A
L
E
,
C
O
----
Co
n
s
t
r
u
c
t
i
o
n
S
e
t
Ci
v
i
l
D
e
t
a
i
l
s
96
0
C
o
u
n
t
y
R
o
a
d
1
0
7
C.3
NO
N/A
N/A
N/A
FL
O
W
FL
O
W
POINTS A MUST BE HIGHER THAN POINT B
D D
POINT A
ENTRENCH 3"
POINT A
POINT B
POINT A
EROSION LOG
POINT B
FLOW
POINT A
PLAN VIEW
PLAN VIEW
A A
EROSION LOG
SEDIMENT REMOVAL SHALL BE PERFORMED
CONTINUOUSLY FOR PROPER FUNCTION.Ø
ENTRENCH 3"
Ø
FLO
W
SECTION A-A
AREA DRAIN
SECTION D-D
X
1
12
"
M
I
N
.
EROSION CONTROL NOTES:
1.IMPLEMENTATION OF THE EROSION AND SEDIMENT CONTROL MEASURES SHALL PRECEDE STRIPPING
OF NATIVE VEGETATIVE COVER AND AS GRADING PROGRESSES.
2.ALL TEMPORARY AND PERMANENT SOIL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE
MAINTAINED AND REPAIRED AS NEEDED TO ASSURE CONTINUED PERFORMANCE OF THEIR INTENDED
FUNCTION. STRAW BALE DIKES OR SILT FENCING MAY REQUIRE PERIODIC REPLACEMENT. SEDIMENT
TRAPS WILL REQUIRE PERIODIC SEDIMENT REMOVAL.
EROSION LOG
ANCHORED IN TRENCH AND
FIRMLY ATTACHED SILT FENCE
FABRIC TO POST
POST
(2" X 2" NOMINAL)
6" x 6" TRENCH
SILT FENCE FABRIC ANCHORED
IN 6"x6" TRENCH AND ATTACHED
FIRMLY TO POST
SILT FABRIC STAPLED
TO POSTS
COMPACTED
BACKFILL
ADJACENT GRADE
4" COMPACTED
ON-SITE SILT OR
CLAY MATERIAL
SIDE SLOPES ADJACENT TO BUILDINGS
SHALL BE 10:1 MIN. FOR 10-FEET.
OTHERWISE, SIDE SLOPES SHALL BE 3:1
MIN., OR PER PLAN.
LINE ALL SWALES WITH FLOWLINE GRADES EXCEEDING
5% WITH 9"Ø NOMINAL ANGULAR ROCK RIPRAP OR A
PERMANENT EROSION CONTROL FABRIC (NORTH
AMERICAN GREEN VMAX S200 OR EQUAL) INSTALLED
PER MANUFACTURER'S RECOMMENDATIONS.
(Verify with the Geotechnical Engineer) Scale: N.T.S.
TYP. FOUNDATION DRAIN
2" MIN.
6" MINIMUM
BELOW GRADE WALL
BACKFILL
PREFABRICATED DRAINAGE
COMPOSITE (MIRANDA 6000 OR
EQUIVALENT
ATTACH PLASTIC SHEETING AT
FOUNDATION WALL SLIP
JOINT
FOOTING OR PAD
COVER ENTIRE WIDTH OF GRAVEL
WITH NON-WOVEN GEOMETRIES
FABRIC (MIRAFI 140N OR
EQUIVALENT).
4"Ø PERFORATED RIGID PIPE (SDR35 PVC). THE PIPE SHOULD
BE PLACED IN A TRENCH WITH A SLOPE OF 1% MIN. (1/8 INCH
DROP PER FOOT) TO DRAIN.
ENCASE PIPE IN 1/2" TO 1-1/2" WASHED
GRAVEL. EXTEND GRAVEL LATERALLY TO
FOOTING AND AT LEAST 1/2 HEIGHT OF
FOOTING. FILL ENTIRE TRENCH WITH
GRAVEL.
8" MIN. OR BEYOND 1:1 SLOPE
FROM BOTTOM OF FOOTING,
(WHICHEVER IS GREATER)
SLOPE TO DRAIN
Scale: N.T.S.
DRAINAGE SWALE
Scale: N.T.S.
TEMPORARY EROSION CONTROL LOGS
Scale: N.T.S.
TEMPORARY SEDIMENT CONTROL FENCE
2%
20'
Scale: N.T.S.
DRIVEWAY SECTION
2%
SHOULDER
2' MIN
SHOULDER
2' MIN
DRIVEWAY
16'
SCARIFY THE SUBGRADE AND
RECOMPACT TO 95%
STANDARD PROCTOR
6" CLASS 2 AGGREGATE
BASE COURSE
CL
6" CLASS 6 AGGREGATE BASE COURSE. CONTRACTOR TO
PLACE 4" LIFT AT THE BEGINNING OF CONSTRUCTION AND
THEN REGRADE AND PLACE ANOTHER 2" JUST PRIOR TO
PROJECT CLOSEOUT.
3%3%
5.5'
3'
1'
1.5'
LINE THE DITCH WITH 6"Ø NOMINAL
ANGULAR RIPRAP EMBEDDED IN 6" OF
HEAVY CLAY. COBBLES ARE NOT
ACCEPTABLE.
MIN
5'-0" MAX.
1
1
10'
MAX.24"
MIN.
42"
MIN.
18" MIN.
24"
MIN.FLOW
FLO
W
FEATURE THAT NEEDS
PROTECTION
USE 2 PINE STAKES 1 1/2" x 1 1/2" x 12"
AT ALL EROSION LOG ENDS OR JOINTS,
OTHERWISE USE A STAKE EVERY 24 IN.
AND CONTINUE TO ALTERNATE
ORIENTATION THROUGHOUT THE
LENGTH OF THE EROSION LOG.
NOTE:
1.SEE THE GRADING, DRAINAGE AND EROSION
CONTROL SHEET FOR SWALE LOCATIONS.
2.V-CHANNEL OR TRAPEZOIDAL CHANNEL AS
SHOWN ON THE PLAN.
AP
P
R
O
X
.
9
0
°
T
O
EA
C
H
O
T
H
E
R
SLOPE PER
GEOTECHNICAL
REPORT
SLOPE
PER OSHA
SLAB-ON-GRADE
NOTES:
1.THE BOTTOM OF THE DRAIN SHOULD BE AT LEAST 2 INCHES BELOW BOTTOM OF FOOTING AT
THE HIGHEST POINT AND SLOPE DOWNWARD TO A POSITIVE GRAVITY OUTLET OR TO A SUMP
WHERE WATER CAN BE REMOVED BY PUMPING.
2.CONTRACTOR TO FOLLOW ANY ADDITIONAL RECOMMENDATIONS OF THE GEOTECHNICAL
ENGINEER.
3:1 M
A
X
.
3:1
M
A
X
.
3:1 M
A
X
.
12
"
WA
T
E
R
:
6
'
-
0
"
M
I
N
,
8
'
M
A
X
.
SE
W
E
R
:
4
'
-
0
"
M
I
N
.
12" MIN.
WATER/SEWER
SERVICE PIPE4" MIN.
6" WIDE MARKER TAPE
TRACER
WIRE
Scale: N.T.S.
WATER/SEWER SERVICE TRENCH
NOTES:
1.WATER SHALL BE INSTALLED WITH AT LEAST 10' OF
SEPARATION BETWEEN WATER/SEWER AND 4' OF
SEPARATION BETWEEN OTHER UTILITIES.
2.BACKFILL THE TRENCH WITH 4" MINUS ONSITE SELECT
MATERIAL COMPACTED TO 95% STANDARD PROCTOR.
CLASS 6 ABC FOR COPPER,
CRUSHER FINES FOR HDPE
12
"
36
"
M
I
N
.
,
48
"
M
A
X
.
6" MIN.
2"Ø SCH.80 PVC
TELEPHONE CONDUIT
4"Ø SCH.80 PVC
ELECTRIC CONDUIT6" CLASS 6 ABC
30" MIN.
6" WIDE MARKER TAPE
TRACER
WIRE
24
"
M
I
N
.
12
"
M
I
N
.
Scale: N.T.S.
ELECTRIC & TELEPHONE TRENCH
NOTES:
1.ELECTRIC & TELEPHONE SHALL BE INSTALLED
WITH AT LEAST 4' OF SEPARATION BETWEEN
OTHER UTILITIES.
2.BACKFILL THE TRENCH WITH 4" MINUS ONSITE
SELECT MATERIAL COMPACTED TO 95%
STANDARD PROCTOR.
BU
I
L
D
I
N
G
FO
U
N
D
A
T
I
O
N
TYPICAL SITE DRAIN TYPICAL ROOF DRAIN
Scale: N.T.S.
TYPICAL ROOF AND SITE DRAIN(S)
DOWNSPOUT ADAPTOR
4"Ø RISER
4"Ø 45° BEND
4"Ø 90° BEND
6"Ø 90° BEND6"Øx4"Ø TEE
(LATERALS)
6"Ø TEE
6"Ø RISER
12"Ø NYLOPLAST INLINE DRAIN
W/ DOME GRATE, TYP.
TEE/BENDS WITH
WATERTIGHT
ADAPTERS, TYP.
INSTALL ELECTRIC JUNCTION AND HEAT TAPE AT EACH
DOWNSPOUT ON THE NORTH SIDE OF THE BUILDING.
INSTALL PULL STRING AND EXTEND TO THE NEAREST
AREA INLET AND SECURE TO THE BOTTOM OF THE
GRATE. LEAVE SUFFICIENT SLACK FOR GRATE REMOVAL.
NOTES:
STORM SEWER PIPING SHALL SCH.40 OR SDR35 PVC
WITH WATERTIGHT JOINTS. ALL SADDLES/TAPS SHALL
BE FULL-BODY TEE OR WYE FITTINGS. FLEXIBLE
CORRUGATE PIPE IS NOT ACCEPTABLE.
4"Ø LATERAL
DO
W
N
S
P
O
U
T
6"Ø MAIN
COMPACT BACKFILL UNDER BOULDERS TO
95% STANDARD PROCTOR DENSITY, WITH A
MOISTURE CONTENT NEAR OPTIMUM, TYP.
24"Ø TO 30"Ø
BOULDERS
REINFORCED BOULDER SLOPE NOTES:
1.BOULDERS SHALL BE ANGULAR AND SQUARE/RECTANGULAR IN
SHAPE. ROUND RIVER BOULDERS ARE NOT ACCEPTABLE.
2.PLACE LARGER BOULDERS AT BOTTOM AND TRANSITION TO
SMALLER BOULDERS AT TOP OF SLOPE. UNDER NO
CIRCUMSTANCES SHOULD ANY BOULDER BE PLACED ABOVE
ANOTHER BOULDER WHICH IS SMALLER THAN ITSELF.
EMBED 2/3 Ø
INTO THE SOIL
CREATE PLANTING
POCKETS AS DESIRED
12" MIN. BURY
TOE OF SLOPE TO BE AT
LEAST 12" FROM ANY SWALE 12" MIN. OF
COMPACTED HEAVY
CLAY, TYP.
18"Ø TO 24"Ø
BOULDERS
O
E
O
E
O
E
O
E
O
E
O
E
3
1
2
kWh
ETC ETC ETC ETC ETC ETC ETC ETC
ETC
ETC
WS
WS
WS
WS
WS
WS
W
S
W
S
W
S
W
S
W
S
W
S
WS
WS
C/O
>>
>
>
>
>
>
>
>
>
>
>>
>
>>>>>
W
S
B
SB SB
SB
SB
SB
SB
SB
SB
SB
SB
4
'
'
S
S
4
'
'
S
S
Pr. 4-Bedroom
Residence
PROPOSED GRAV
E
L
D
R
I
V
E
TP
4''
S
S
4''
S
S
NOTES:
PROPERTY LINES ARE BEYOND THE
MAPPED AREA.
LOCATIONS OF ALL COMPONENTS MAY
BE VARIED AS NECESSARY AS LONG AS
ALL MINIMUM DISTANCES AND SLOPES
MEET THOSE REQUIRED.
TP
TP
DS
DS
DS
DS
DS
DS
DS
DS
C/O
100' WELL SETBACK
INSTALL 4"Ø SCH.40 PVC
SEWER LINE @ 2% MIN., TYP.
INSPECTION PORT AT EACH
END OF EACH TRENCH, TYP.
INSTALL 1250-GALLON
TWO-COMPARTMENT SEPTIC
TANK WITH AN EFFLUENT
FILTER IN THE OUTLET RISER
(SEE SETBACK NOTES)
INSTALL A TWO-WAY
CLEANOUT OUTSIDE
THE BUILDING
APPROX. TEST PIT
LOCATION, TYP.
OWTS DISTRIBUTION BOX APPROX. TEST PIT
LOCATION, TYP.
APPROX. TEST PIT
LOCATION, TYP.
BACKWASH AND/OR FLUSHING
INFILTRATION SYSTEM:
4 INFILTRATOR QUICK 4 UNITS OR
3 ADS ARC36 UNITS,
INSTALL OUTSIDE THE PROPOSED FILL
INSPECTION PORT THE
END OF THE TRENCH
4"Ø SCH.40 PVC
SEWER @ 2%. MIN.
EX. WELL
ETCDS
>
>
6''Ø
6
'
'
Ø
6''Ø
8
'
'
Ø
8
'
'
Ø
8
'
'
Ø
8
'
'
Ø
8
'
'
Ø
6''Ø
6''
Ø
6''Ø
6''Ø
6''Ø
6''Ø
52 QUICK 3 INFILTRATOR (3 x 18)
OR 42 ADS ARC36 UNITS (3 x 14)
IN A TRENCH CONFIGURATION
(BOTTOM OF TRENCHES TO EACH BE LEVEL)
(SEE SETBACK NOTES)
>
2
0
'
M
I
N
.
F
R
O
M
T
H
E
F
O
U
N
D
A
T
I
O
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>5' MIN. FROM
THE FOUNDATIO
N
>
2
0
'
M
I
N
.
F
R
O
M
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>20
'
M
I
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F
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WAT
E
R
L
I
N
E
6625
6620
6610
6615
6605
6600
6610
6615
6625
6630
6630
6615
6615
6620
6625
4''SS
4''SS
4''SS
4
'
'
S
S
4
'
'
S
S
4
'
'
S
S
12'x24' SHED TO BE
RELOCATED TO THIS
AREA DURING
CONSTRUCTION.
00 20'40'
Scale: 1" = 20'
37110DERIC J O N WA
L
T
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COL O R A D O LICE
N
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P
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SSIONA L E N G INEER
7/24/25
NORTH
923 Cooper Avenue, Ste. 201
Glenwood Springs, CO 81601
tele: 970.945.5252
www.bu-inc.com
Engineer or Surveyor Seal
Sheet
Client Information:
Project No.:
Filename:
Designer:
Drafter:
Date:
N:
\
P
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E
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0
2
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2
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1
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P
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Subsurface Utility Engineering (SUE)
Required Project:
If "Yes", SUE Certification by:
Firm:
Job #:
Date:
Agency Approval
Agency:
Dept:
By:
Date:
Comments:
RevisionDate
----
----
----
----
7/24/25
RTC
DJW
25012-v-topo.dwg
25012
805.705.1511
CARBONDALE, CO 81623
960 COUNTY ROAD 107
BRITTANY & TAYLOR MELONUK
CA
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----
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7
C.4
NO
N/A
N/A
N/A
960 County RD 107, Carbondale, CO
County of Garfield,
State of Colorado
Parcel No: 2393-224-00-301 Vicinity Map
NOTES:
THIS PLAN SET IS INTENDED TO BE PLOTTED IN
COLOR. FAILURE TO DO SO MAY RESULT IN MISSING
DATA & INFORMATION CRITICAL TO THE PROJECT.SITE
Carbondale
Highway-82
to
Glenwood
Springs
Scale: N.T.S.
TWO-WAY CLEANOUT
SURFACE
1"
SYSTEM DESIGN & CONSTRUCTION NOTES:
1.ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH CDPHE REGULATION 43 ONSITE WASTEWATER TREATMENT SYSTEM (OWTS) REGULATION, MOST CURRENT
EDITION AND LOCAL AGENCY REQUIREMENTS WHICH MAY OR MAY NOT SPECIFICALLY BE NOTED ON THE DRAWINGS. THE CONTRACTOR SHALL BE RESPONSIBLE
FOR KNOWING AND CONFORMING TO SUCH SPECIFIC DETAILS AS ARE REFERRED TO IN THE ABOVE MENTIONED REGULATIONS. THIS DRAWING DOES NOT
CONSTITUTE AN OWTS PERMIT. A PERMIT MUST BE OBTAINED FROM APPROPRIATE LOCAL AGENCY. THE CONTRACTOR MUST CONTACT THE LOCAL AGENCY
HEALTH DEPARTMENT AND THE PROJECT ENGINEER FOR INSPECTIONS OF THE CONSTRUCTED SYSTEM BEFORE BACKFILL. A REQUEST FOR INSPECTION BY THE
PROJECT ENGINEER AND THE COUNTY ENVIRONMENTAL HEALTH OFFICER MUST BE MADE AT LEAST 72-HOURS PRIOR TO THE DESIRED TIME OF BACKFILLING.
2.DEMAND CALCULATIONS (SEC.43.6.A.2.h)
2.A.FOUR (4) BEDROOM PRIMARY RESIDENCE USING TREATMENT LEVEL 1 (TL1).
2.B.AVERAGE DAILY WASTEWATER FLOW (ADWF) AND ORGANIC LOAD RATE (BOD5):
2.B.1.SINGLE FAMILY DWELLING: 75 gpdc & 0.20 BOD5 lbs/day
2.B.2.ADWF:
2.B.2.1.PRIMARY RESIDENCE = 75 gpd * (3 BEDROOMS * 2 PERSONS/BEDROOM + 1 BEDROOM * 1 PERSONS/BEDROOM) = 525 gpd
2.B.3.BOD5 = 0.20 lbs/day * 7 PERSONS= 1.40 lbs/day
BOD5 mg/L = BOD5*1,000,000 = 1.40 lbs/day*1,000,000 = 319.74 mg/L
ADWF*8.34 525 gpd*8.34
2.B.4.CBOD5 = BOD5 * 0.85 = 272 mg/L
3.SEPTIC TANK (SEC.43.9.B.2.a):
3.A.MINIMUM EFFECTIVE VOLUME = 1,250-GALLONS (TABLE 9-1)
3.B.THE TANK IS NOT SUBJECT TO BUOYANCY.
4.ABSORPTION AREA CALCULATIONS:
4.A.THE ABSORPTION AREA SLOPES GENTLY.
4.B.LONG TERM ACCEPTANCE RATE (LTAR) FOR TREATMENT LEVEL 1 (TL1) OF 0.60 gpd/SF (SEE SITE & SOILS EVALUATION NOTES/DETAIL).
4.C.MINIMUM SOIL TREATMENT AREA, A:
A = ADWF = 525 = 875 S.F.
LTAR 0.60 gpd/S.F.
4.D.SIZE ADJUSTMENT FACTORS: GRAVITY TRENCH = 1.0; CHAMBERS = 0.7 (TABLE 10-1A).
4.D.1.A,adj = 875 SF * 1.0* 0.7 = 613 SF
4.E.GRAVELLESS CHAMBER TRENCH SYSTEM:
4.E.1.INFILTRATOR QUICK4: 613 SF / 12 SF/UNIT = 52 UNITS. INSTALL 54 UNITS IN THREE (3) 18 UNIT TRENCHES
4.E.2.ADS ARC 36: 613 SF / 15 SF/UNIT = 41 UNITS. INSTALL 42 UNITS IN THREE (3) 14 UNIT TRENCHES.
5.THIS SYSTEM IS SIZED FOR TYPICAL HOUSEHOLD WASTES ONLY. BACKWASH OR FLUSHING FLOWS FOR REVERSE OSMOSIS UNITS OR WATER SOFTENERS AND/OR
FILTERS SHOULD NOT BE INTRODUCED INTO THIS SYSTEM. BACKWASH AND FLUSHING FLOWS SHALL BE DISPOSED OF WITHIN A SEPARATE INFILTRATIVE SYSTEM
(SEE BELOW).
6.CLEAN OUTS ARE REQUIRED AT THE HOUSE AND AT ALL BENDS GREATER THAN 45° AND AT LEAST EVERY 100-FEET BETWEEN THE HOUSE AND THE SEPTIC TANK.
7.THE CONTRACTOR SHALL BE RESPONSIBLE FOR INSTALLING ALL WATER TIGHT COMPONENTS THROUGHOUT THE SYSTEM TO PREVENT INFILTRATION.
8.INSTALL RISERS AS NECESSARY TO BRING ALL ACCESS PORTS TO FINAL GRADE. PORTS SHALL BE MARKED IF CAPS ARE TO BE BURIED.
9.INSTALL 3-INCHES OF BLUEBOARD INSULATION, 3-FEET WIDE, OVER SEWER AND EFFLUENT PIPE WHEREVER DEPTH IS LESS THAN 3-FEET. UNDER NO
CIRCUMSTANCES SHALL COVER BE LESS THAN 2-FEET.
10.SITE PLAN INFORMATION FROM OTHERS. LOCATIONS OF ALL COMPONENTS MAY BE VARIED AS NECESSARY AS LONG AS ALL MINIMUM DISTANCES AND SLOPES
MEET THOSE REQUIRED.
BACKWASH OR FLUSHING FLOWs:
1.DEMAND CALCULATIONS
1.A.WATER SOFTENER = 15% OF DAILY USE = 525 gpd * 0.15 = 79 gpd
1.B.REVERSE OSMOSIS (R/O) UNDER SINK = 2 gpd * 4:1 WASTE * 7 PERSONS = 56 gpd
1.C.TOTAL= 135 gpd
1.D.GRAVELLESS CHAMBER STORAGE CAPACITY:
1.D.1.INFILTRATOR QUICK 4: 43 gallons = USE 4 CHAMBERS
1.D.2.ADS ARC 36: 59 gallons = USE 3 CHAMBERS
1.E.PERCOLATION CHECK (< 24 HOURS):
1.E.1.CHAMBER STORAGE DEPTH: 12 INCHES. PERCOLATION RATE (I): 25 MPI (SOIL TYPE 2)
1.E.2.TIME = (DEPTH * I) * 1 HOUR = (12 IN. * 25 MPI) * 1 HOUR = 5 HOURS.
60 MIN.60 MIN.
8'
±
TOPSOIL
SANDY LOAM
(GRAVELLY, VERY STIFF,
SLIGHTLY MOIST, PALE RED TO
PALE BROWN, STRONG BLOCKY
STRUCTURE, VERY CALCAREOUS)
4" PVC TEE/RISER
NOTE:
HIGH DENSITY POLYETHYLENE TANKS BY NORWESCO, INC. ARE
AN ACCEPTABLE ALTERNATIVE TO CONCRETE.
MAINTENANCE NOTES
1.TO ENCOURAGE THE HEALTH AND LONGEVITY OF THE OWTS SYSTEM, THE OWNER SHALL CONSIDER THE
FOLLOWING:
1.A.MINIMIZE THE AMOUNT OF WATER THAT GOES DOWN THE DRAIN, THE BETTER YOUR SYSTEM WILL
WORK.
1.B.MINIMIZE SOLIDS GOING DOWN THE DRAIN.
1.C.ELIMINATE GARBAGE DISPOSALS OR KEEP THE USE OF GARBAGE DISPOSALS TO A MINIMUM.
1.D.MINIMIZE GREASE AND OILS THAT GO DOWN THE DRAIN.
1.E.USE LINT FILTERS ON LAUNDRY MACHINE DRAINS.
1.F.KEEP SAND AND DIRT OUT OF THE BUILDING DRAIN.
1.G.AVOID FLUSHING SANITARY NAPKINS OR PAPER PRODUCTS OTHER THAN TOILET PAPER.
1.H.DO NOT USE LYE-BASED DRAIN UNCLOGGER CHEMICALS SUCH AS DRAINO, OVEN-OFF, OR OTHER
STRONG CLEANING AGENTS.
1.I.DO NOT PUT ANY “ROOT DETERRENTS” DOWN THE DRAIN.
1.J.DO NOT POUR PAINT THINNER, PESTICIDES, PAINTS OR PHOTO LAB CHEMICALS DOWN THE DRAIN
1.K.MINIMIZE USE OF CHLORINE BLEACH AND TOILET ADDITIVES.
2.THE OWNER SHALL CONTRACT WITH A SEPTIC TANK INSPECTOR TO INSPECT THE TANK ANNUALLY FOR
GREASE AND SEDIMENT ACCUMULATION. THE INSPECTOR SHALL REMOVED AND PROPERLY DISPOSED OF
ACCUMULATED GREASE AND SEDIMENT AS NEEDED TO ENSURE PROPER FUNCTION OF THE SYSTEM.
GENERAL ABSORPTION AREA NOTES
1.INSTALL CHAMBER UNITS IN ACCORDANCE WITH MANUFACTURER'S
RECOMMENDATIONS.
2.ABSORPTION TRENCHES SHALL BE 3' WIDE OR LESS AND PARALLEL THE GROUND
SURFACE CONTOURS. PARALLELING TRENCHES SHALL BE SEPARATED BY A
DISTANCE OF 6' MIN.
3.THE BOTTOM OF THE ABSORPTION TRENCHES SHALL BE LEVEL AND THE BOTTOM
AND SIDEWALLS MUST BE RAKED TO REMOVE ANY SOIL SMEARS INCURRED
DURING THE EXCAVATION. FAILURE TO DO SO MAY REQUIRE THE CONTRACTOR TO
REPLACE THE ABSORPTION FIELD AT HIS/HER OWN EXPENSE.
4.DRAINAGE SWALES ARE TO BE PROVIDED ABOVE AND AROUND THE FIELD, AS
NECESSARY, TO PREVENT SURFACE RUNOFF FROM ENTERING ABSORPTION AREA.
5.NO EXCAVATION OF THE ABSORPTION FIELD IS TO BE DONE DURING WET WEATHER
AND USE OF RUBBER TIRE VEHICLES OVER THE ABSORPTION AREA IS STRICTLY
PROHIBITED.
6.UNSUITABLE MATERIAL EXISTING WITHIN THE FIELD SHALL BE EXCAVATED AND
BACKFILL SHALL CONSIST OF IMPORTED LOAMY SAND OR SANDY GRAVEL. THE
ENGINEER SHALL BE CONTACTED IF BEDROCK OR GROUNDWATER IS
ENCOUNTERED IN THE OVER-EXCAVATION.
7.TOPSOIL COVER MAY BE VARIED (1-FOOT MINIMUM, 2-FOOT MAXIMUM) TO
ALLOW FOR LANDSCAPING.
36" MAX.
UNDISTURBED NATIVE SOILS
6' (MIN.)
BOTTOM TO BE LEVEL AND FLAT OVER
ENTIRE AREA TO WITHIN 0.05'±. (TYP.)
REMOVE ANY ENCOUNTERED
BOULDERS AND BACKFILL WITH
LOAMY SAND OR SANDY GRAVELS. DO
NOT USE COMPACTED MATERIALS.
DO NOT WALK ON OR COMPACT
BOTTOM OF TRENCH.
FINISHED GROUND - MAINTAIN POSITIVE
SLOPE AWAY FROM TOP SURFACE OF
THE CHAMBER TRENCHES.
PVC COUPLING FOR SUPPORT
STANDARD INSPECTION PORT, TYP. (4"Ø
PVC SOLID PIPE CUT TO FIT. LOCATE PER
PLAN VIEW. ATTACH REMOVABLE CAP OR
THREADED CLEANOUT ASSEMBLY.
INFLOW PIPE SHALL ENTER
THE UPPER KNOCKOUTS
GRAVELLESS CHAMBER SYSTEM:
INFILTRATOR QUICK 4, ADVANCED
DRAINAGE SYSTEMS BIODIFFUSER
(STANDARD), OR ENGINEER
APPROVED EQUAL.
EX. GRA
D
E
5
%
±
1% MIN
3:1 M
A
X
G
R
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D
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FILL
CIRCULAR IRRIGATION-STYLE VALVE
BOX & COVER - LID COLOR PURPLE
OR GREEN - LABEL "SEWER"
3:1
M
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G
R
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18
"
M
I
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1' MIN
2' MAX
1% MIN
FILL
4" PVC TEE/RISER
WITH EFFLUENT
FILTER ON THE
TANK OUTLET
4"Ø PERFORATED PVC PIPE.
EXTEND PIPE TO REST ON
BOTTOM OF THE BED
SITE EVALUATION
1.SITE AND SOIL EVALUATIONS WERE PERFORMED BY:
DERIC J. WALTER, PE ROBERT DURAN, PE
BOUNDARIES UNLIMITED INC.KUMAR & ASSOC.
923 COOPER AVE., STE. 201 5020 C.R. #154
GLENWOOD SPRINGS, CO 81601 GLENWOOD SPRINGS, CO 81601
970.945.5252 970.945.7988
2.EVALUATION DATE(S): MAY 14, 2025.
3.THE PRELIMINARY SOIL CLASSIFICATION FOR THIS DESIGN IS BASED ON THE
SUBSOIL STUDY PERFORMED BY THE GEOTECHNICAL ENGINEER (KUMAR & ASSOC.
PROJECT #PROJECT #23-7-124, AS USDA SANDY LOAM; TYPE 2; WITH AN LTAR
OF 0.60 GPD/SF.
4.SETBACK REQUIREMENTS FOR A TREATMENT LEVEL 1 STA TRENCH/BED, UNLINED
SAND FILTER OR SEEPAGE PIT (PER TABLE 7-1) AND AN ADWF=525 GPD:
4.A.SPRING, WELL OR POTABLE CISTERN=100'
4.B.POTABLE WATER SUPPLY LINE=25'
4.C.STRUCTURE W/ BASEMENT/CRAWL SPACE=20'
4.D.STRUCTURE W/O BASEMENT/CRAWL SPACE=10'
4.E.PROPERTY LINE, PIPE OR LINED IRRIGATION DITCH=10'
4.F.INTERMITTENT IRRIGATION LATERAL, INFILTRATION STRUCTURE=25'
4.G.LAKE, WATER COURSE, IRRIGATION DITCH, STREAM OR WETLAND=50'
4.H.DRY GULCH, CUT BANK OR FILL AREA=25'
4.I.SEPTIC TANK=5'
4.J.RESTRICTIVE LAYER OR GROUNDWATER (VERTICAL): 4' (TREATMENT LEVEL 1,
GRAVITY FEED)
3.SETBACK REQUIREMENTS FOR THE SEPTIC TANK SHALL BE (PER TABLE 7-1):
3.A.SPRING, WELL OR POTABLE CISTERN=50'
3.B.POTABLE WATER SUPPLY LINE=10'
3.C.STRUCTURE W/ BASEMENT/CRAWL SPACE=5'
3.D.STRUCTURE W/O BASEMENT/CRAWL SPACE=5'
3.E.PROPERTY LINE, PIPE OR LINED IRRIGATION DITCH=10'
3.F.INTERMITTENT IRRIGATION LATERAL, INFILTRATION STRUCTURE=10'
3.G.LAKE WATER COURSE, IRRIGATION DITCH, STREAM OR WETLAND=50'
3.H.DRY GULCH, CUT BANK OR FILL AREA=10'
3.I.STA TRENCH/BED, UNLINED SAND FILTER OR SEEPAGE PIT=5'
FLOW
ATTACH REMOVABLE CAP OR
THREADED CLEANOUT ASSEMBLY.
INSTALL MARKER IF CAP IS TO
BE BURIED.
FINISH GRADE
4"Ø PVC RISER
4"Ø PVC TWO-WAY
CLEANOUT TEE
4"Ø SEWER LINE
12" SQ. NYLOPLAST H-20
SOLID COVER ASSEMBLY
REMOVABLE PVC CAP
FLUSH WITH SURFACE
24"x24"x6" CONCRETE
IN LANSCAPE
IN HARDSCAPE
Scale: N.T.S.
GRAVELESS CHAMBER ABSORPTION TRENCH
Scale: N.T.S.
SITE & SOILS EVALUATION
00 200'400'
Scale: 1" = 200'
37110DERIC J O N WA
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COL O R A D O LICE
N
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D
P
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SSIONA L E N G INEER
7/24/25
NORTH
923 Cooper Avenue, Ste. 201
Glenwood Springs, CO 81601
tele: 970.945.5252
www.bu-inc.com
Engineer or Surveyor Seal
Sheet
Client Information:
Project No.:
Filename:
Designer:
Drafter:
Date:
N:
\
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E
C
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Subsurface Utility Engineering (SUE)
Required Project:
If "Yes", SUE Certification by:
Firm:
Job #:
Date:
Agency Approval
Agency:
Dept:
By:
Date:
Comments:
RevisionDate
----
----
----
----
7/24/25
RTC
DJW
25012-v-topo.dwg
25012
805.705.1511
CARBONDALE, CO 81623
960 COUNTY ROAD 107
BRITTANY & TAYLOR MELONUK
CA
R
B
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D
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,
C
O
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NO
N/A
N/A
N/A
PR. RESIDENCE
PR. DRIVEWAYEX. ROAD