HomeMy WebLinkAboutApplication- Permitrio7b.cro
cc ) 2/3/os
GARFIELD COUNTY BUILDING AND SANITATION DEPARTMENT
108 Eighth Street, Suite 201
Glenwood Springs, Coloradof 81601
Phone (970) 945-8212
INDIVIDUAL SEWAGE DISPOSAL PERMIT
Permit 4 0 8 9
Assessor's Parcel No.
l
o23y-oD ai
This does not constitute
a building or use permit.
PROPERTY ( r 1-15 / ,/ / 9417-5'511
Owner's Name I r I AIM r11 `,reit K ` DM Mo Prresen`t Address %D j Owl/ b • �1Y 6 SPhone
System Location ° n 1 C� 311 C f to 1r �I S'16-54—
Legal Description of Assessor's Parcel No. o" rf/ / — �J 1—« — )
SYSTEM DESIGN
Septic Tank Capacity (gallon)
Percolation Rate (minutes/inch) Number of Bedrooms (or other)
Required Absorption Area - See Attached
Special Setback Requirements:
Date Inspector
FINAL SYSTEM INSPECTION AND APPROVAL (as installed)
Call for Inspection (24 hours notice) Before Covering Installation
System Installer
Septic Tank Capacity
Septic Tank Manufacturer or Trade Name
Septic Tank Access within 8" of surface
Absorption Area
Absorption Area Type and/or Manufacturer or Trade Name
Adequate compliance with County and State regulations/requirements
Other
y'
Other
Date
2//A
RETAIN WITH
of
Inspector,'��J A `/R/+'N45 (--L 72'
RECEIPT EC
DS AT CONSTRUCTION SITE ZZ -
+CONDITIONS:
1. All installation must comply with all requirements of the Colorado State Board of Health Individual Sewage Disposal Systems Chapter
25, Article 10 C.R.S 1973, Revised 1984
2. This permit is valid only for connection to structures which have fully complied with County zoning and building requirements. Con-
nection to or use with any dwelling or structures not approved by the Building and Zoning office shall automatically be a violation or a
requirement of the permit and cause for both legal action and revocation of the permit.
3. Any person who constructs,alters, or installs an individual sewage disposal system in a manner which involves a knowing and material
variation from the terms or specifications contained in the application of permit commits a Class I, Petty Offense (5500.00 fine — 6
months in jail or both).
Whits- APPLICANT VAIInw - nPP ArTWFNT
INDIVIDUAL SEWAGE DISPOSAL SYSTEM APPLICATION
OWNER ✓i-49/Mr7 Cori�na+KS Liar --
ADDRESS fe-7e' C An71.4, !' j Zy /_`S G PHONEY97-5767/
CONTRACTOR .S.€9?).7-72_
ADDRESS PHONE
PERMIT REQUEST FOR (4.NEW INSTALLATION ( ) ALTERATION ( ) REPAIR
Attach separate sheets or report showing entire area with respect to surrounding areas, topography of area, habitable
building, location of potable water wells, soil percolation test holes, soil profiles in test holes (See page 4).
LOCATION OF PROPOSED FACILITY:
Near what City of Town
al
j/E2_
AL -al Legal Description or 1ctc 3 /y
WASTES TYPE: ( ) DWELLING
( Id_COMMERCIAL OR INDUSTRIAL
( ) OTHER -DESCRIBE
Size of Lot 1:41--e---
0e2.110444.41
ti41--L
Ce0,i6(4,
) TRANSIENT USE
) NON-DOMESTIC WASTES
BUILDING OR SERVICE TYPE: >!-ov�c--
Number of Bedrooms
( ) Garbage Grinder
( ) Automatic Washer
SOURCE AND TYPE OF WATER SUPPLY: (
0Frce /LeAoct /Savr-5
Number of Persons
( ) Dishwasher
LL ( ) SPRING ( ) STREAM OR CREEK
If supplied by Community Water, give name of supplier:
DISTANCE TO NEAREST COMMUNITY SEWER SYSTEM: / mz
Was an effort made to connect to the Community System? 9C-6-
A
CC
A site ' lan is re ' uired to be submitted that indicates the followin ' MINIMUM distances:
Leach Field to Well: 100 feet
Septic Tank to Well: 50 feet
Leach Field to Irrigation Ditches, Stream or Water Course: 50 feet
Septic System (septic tank & disposal field) to Property Lines: 10 feet
YOUR INDIVIDUAL SEWAGE DISPOSAL SYSTEM PERMIT WILL NOT BE ISSUED WITHOUT
A SITE PLAN.
GROUND CONDITIONS:
Depth to first Ground Water Table ct- ".12
Percent Ground Slope
2
YPE OF INDIVIDUAL SEWAGE DISPOSAL SYSTEM PROPOSED:
SEPTIC TANK
VAULT PRIVY
PIT PRIVY
CHEMICAL TOILET( )
( ) AERATION PLANT ( ) VAULT
( ) COMPOSTING TOILET ( ) RECYCLING, POTABLE USE
( ) INCINERATION TOILET ( ) RECYCLING, OTHER. USE
OTHER -DESCRIBE
NAL DISPOSAL BY:
X2 ABSORPTION TRENCH, BID OR PIT ( ) EVAPOTRANSPIRATION
UNDERGROUND DISPERSAL ( ) SAND FILTER
ABOVE GROUND ))LSPERSAL ( ) WASTEWATER POND
OTHER -DESCRIBE
/ILL EFFLUENT BE DISCHARGED DIRECTLY INTO WATERS OF THE STATE? ..9
ERCOLATION TEST RESULTS: (To be completed by Registered Professional Engineer, ifthe Engineer does the
ercolation Test) Fac Y 5'T to/u- 1C 17,Y�id eR) TD eft ink/ sov Gr_dt9,TJj
Minutes per inch in hole No. 1 Mnnutes per inch in hole No. 3
Minutes pa inch in hole No. 2 )(mutes per inch in hole No _
sae, address and telephone of RPE who made soil absorption tests Gte.4r Ceula:r.G rntd
G.d a fiat:
sae, address and telephone of RPE responsible for design of the system: /an /+die
.z s< 2 qzy aeavOvartno c ifte _Tsps us—'7
,pplic ant athnowledges that the oomph of the application is conditional upon sod' further mandatory and
iditional tots and reports as may be required by the local health department tobemade and f®dshedbyiheapplicmt
r by the local health department for purposed ofthe evaluation of the application; and the issuance of the permit is
abject to such tams and conditions as deemed necessary to insure compliance with rules and regulations made,
'formation and reports submitted herewith and required ed to be submitted by the applicant are or will be represented to
e true and correct to the best of my 'row/ledge and belief and are designed to be relied m by the local department of
eahh in evaluating the same for purposes of issuing the permit applied for herein. I further tmderstaod that any
dsificatiao ormisrepresmtation may result in the denial oftheappliation orrevocation of any pamnitgranted based
pon said application and in legal action for perjury as provided by law.
UPS
Date ..915WlG -a:9c5-
W AN ACCURATE MAP TO YOUR PROPERTY!?
O
O
A
2
A
z
gl
0 =
z4
1
a
1
CRONK 1129.24- Road
CONSTRUCTION • Grand Junction, CO 81505
X70.245-0577, 970-257-7453 (fax)
INCORPORATCEIVE
February 1, 2006
FEB 1 0 2006
GARFIELD COUNTY�yy
CERTIFICATE O9~"I1Ur2ND ACCEPTANCE
Individual Sewage Disposal System
Sills Project - Redman Job
2001 County Road 319
Rifle, CO 81650
The individual sewage disposal system of reference was inspected on February 1, 2006. The
system was found to conform with the plans and specifications set forth in the engineered sewage
disposal system design for the aforementioned property prepared on January 16, 2006. Copies of
the engineered plan are on file at the Garfield County Building Department or may be obtained
from the undersigned design engineer.
Seal
Thomas A. Cronk, P.E.
1129 -24- Road
Grand Junction, CO 81505
970-245-0577
a
building
60'
1500 gallon
septic tank
—distribution box
3'.tYP
absorption field consisting
of 3 roves of 12 Infiltrators
(H -10s) For o total of 36 units
SILLS PROJECT - REDMAN JOB
2001 CR 319, RIFLE
ASBUFLT DRAWING
FEBRUARY 1, 2006
SCALE. 1'=20'
NORTH
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
CRONK
CONSTRUCTION
INCORPORATED
1129 -24- Road
• Grand Junction, CO 81505
970-245-0577, 970.257.7453 (fax)
INDIVIDUAL SEWAGE DISPOSAL SYSTEM DESIGN
Date: January 16, 2006
Prepared by: Thomas A. Croak, P.E.
Cronk Construction Inc.
1129 -24- Road
Grand Junction, CO 81505
245-0577
Type of Design: Commercial
Owner:
Jimmy Sills
c/o Mamm Creek Commons, LLC
45705 Highway 6&24
Glenwood Springs, CO 81601
970-947-9511
Property address: 2001 County Road 319, Rifle, CO 81650
Tax schedule No.:
Page 1 of 9
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1.0 Site History
The site consists of approximately 2.44 acres of uncultivated native soil. Drainage is approximately 1%
to the east. A percolation test/soils evaluation was conducted on the property of reference on 01/13/06
by Tom A. Cronk, registered professional engineer (R.P.E.).
The perc test was intended to provide subsurface design parameters for design of an individual sewage
disposal system (ISDS) for commercial use. As based on results from this subsurface investigation, the
following ISDS design has been prepared. Results from the 01/13/06 perc test/soils evaluation are
attached for reference as Appendix A. The locations of the perc test/soils observation excavations are
shown on the attached plot plan.
2.0 Development of Design Parameters
A perc excavation trench (south trench) was extended to a depth of 120" below ground surface (BGS).
There was no evidence of ground water or high seasonal water table in the open excavation to a depth of
120" BGS. The soils evaluation indicates three distinct soil horizons underlie the site. A lithological
description follows:
depth (in.) description
0" - 44" sandy clay/sandy silt, light brown to tan; blocky; friable
44" - 62" pitrun (10mm-IOOmm), Tight gray
62" - 120" clayey sand with intermittent sand lenses (10"-16" thick), light brown to tan
As based on the perc test results (Appendix A), a weighted design perc rate of 40 min/in. is chosen for
overall system sizing for subsurface discharge below a depth of 36".
Page 2 of 9
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3.0 System Design
A INFILTRATOR absorption trench is proposed for discharge of septic effluent at the site. Construction
of the system will consist of excavating level trenches in the area comprising the absorption field. The
initial excavation shall be continued to a minimum depth of 36" (see absorption field cross-section).
Following completion of the initial push -out, INFILTRATORS will be used to construct a septic effluent
distribution system in the open excavations. The INFILTRATOR effluent distribution system will be
installed in accordance with the "Infiltrator Technical Manual", available from Infiltrator Systems Inc.,
123 Elm Street, Suite 12, Old Saybrook, Connecticut 06475. Adjacent INFILTRATORS shall be fastened
with a minimum of four (4) 3/4" x #8 self -tapping sheet metal or bright brass deck screws to prevent
movement and separation during backfilling. As shown in the Construction Detail, the bottom of the
INFILTRATOR seepage trenches will be located a minimum of 36" below ground level.
After the INFILTRATORS are installed, the absorption field will be covered with a soil cap. The soil cap
will consist of approximately 24" (10" minimum required) of native soil mounded 5% to promote surface
run off away from the absorption field.
The installer should confirm the feasibility of gravity discharge of sewage effluent from the structure to
the absorption field by field verification of assumed design parameters. Assumed design parameters with
respect to gravity discharge include:
• distance from exit of sewage pipe at foundation line to absorption field - 60' or less,
• elevation of ground surface at entry to absorption field must be no more than 12" above
the invert elevation of sewage pipe at exit from foundation line.
If field measurements do not confirm these design assumptions, gravity discharge of septic effluent from
the proposed structure can not be assured and a lift station may be required. Please contact the design
engineer to address any design modifications necessary if these design assumptions are not upheld.
The installer must also confirm the setbacks from property lines, building envelopes, and existing
easements shown in the attached graphics are maintained. Vehicle traffic and parking is to be prevented
over the absorption and repair area. Provide a structural septic tank, manholes, and minimum schedule
40 PVC with minimum 12" of cover under all vehicle traffic areas. Additionally, any unknown utility
lines, easements, or other adverse conditions disclosed during construction must maintain the required
setbacks listed on page 6 of this document.
Sewage loading for the ISDS will include lavatory, water closet, and shower service for 34 employees
and customers associated with a 1,840 sq. ft. office area and 7,440 sq. ft. shop. The ISDS load sizing is
based on the maximum number of occupants for the structure as determined from the IBC building code.
Average daily sewage loadings are calculated as follows:
Sewage Source Design Loading Average Daily Sewage Flow
shop occupants @ 500 sq.ft./occupant 15 employees @ 20 gal/employee-8 hr. shift 300 gal/day
office occupants @ 100 sq.ft./occupant 19 employees @ 15 gal/employee-8 hr. shift 285 gaUday
Total Average Daily Sewage Flow 585 gal/clay
Page 3 of 9
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
A 1,250 gallon septic tank is required for retention of septic effluent for the proposed sewage loading. A
non -corrodible Orenco filter (model # FTW0444-36A) shall be installed at the final outlet Tee of the
septic tank or in the effluent line between the septic tank and the absorption field to limit the size of
solids and sludge passing into the absorption fields. The filter must be accessible for cleaning and
replacement from the ground surface.
A distribution box is required to provide equal distribution of septic effluent from the septic tank to the
absorption field. The distribution box must be placed on stable native soil or compacted structural fill to
prevent settling and assure equal distribution of septic effluent.
As discussed above, INFILTRATOR absorption trenches are proposed to discharge septic effluent to the
underlying sub -soils. As shown in the attached graphics, the absorption trenches will consist of three (3)
trenches 3' wide x 3' min. deep x 75' long with twelve (12) standard INFILTRATOR units each for a total
of thirty six (36) H-10 INFILTRATORS. The absorption field will encompass a gross area of 675 square
feet with an effective area (31 sq. ft. allowed area/INFILTRATOR) of 1,116 sq. ft. Altematively, the
absorption trenches will consist of three (3) trenches 3' wide x 3' min. deep x 76' long with nineteen (19)
QUICK4 INFILTRATOR units each for a total of fifty seven (57) QUICK4 INFILTRATORS. The
absorption field will encompass a gross area of 684 square feet with an effective area (19.74 sq. ft.
allowed area/INFILTRATOR) of 1,125 sq.
Calculations and design parameters used to size the absorption field follow.
Page 4 of 9
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
DESIGN CALCULATIONS
DESIGN SEWAGE LOADING OF 585 GALWAY AVERAGE FLOW
PEAK FLOW = 150% OF AVERAGE = 877.50 GALWAY
DESIGN PERCOLATION RATE = 40.0 MIN./INCH
A = Q f , WHERE,
A = ABSORPTION FIELD AREA
Q = PEAK FLOW
I = PERC TIMEI!NCH
877.50 40.0 = 1109.96 SQUARE FEET
5
SIZE ADJUSTMENT FACTOR OF 0.5 FOR INFILTRATOR TRENCH SYSTEM
ADJUSTED AREA = 1109.96 X 0.5 = 554.98 SQUARE FEET
USE 36 STANDARD (H-10) INFILTRATORS @ 15.50 SQ. FT. EACH
FOR TOTAL ABSORPTIVE AREA OF 36 X 15.50 = 558 SQ. FT.
ABSORPTION FIELD SIZED AT THREE (3) TRENCHES 3 FT. x 75 FT. = 675 SQ. FT.
ALTERNATIVELY, USE 57 QUICK4 INFILTRATORS @ 9.87 SQ. FT. EACH
FOR TOTAL ABSORPTIVE AREA OF 57 X 9.87 = 562.59 SQ. FT.
ABSORPTION FIELD SIZED AT THREE (3) TRENCHES 3 FT. x 76 FT. = 684 SQ. FT.
Page 5 of 9
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4.0 Site Specific Installation/Operation Requirements
The owner and system contractor shall be aware and comply with the following installation and system
operation requirements.
4.1 Installation - Setbacks, Notifications, and Inspections
• All installation activities shall be conducted in accordance with current Colorado
Department of Health ISDS Regulations as well as any relevant Garfield County
regulations and requirements. If at any time during construction, subsurface site
conditions are encountered which differ from the design parameters developed in Section
2.0, construction activities will stop and the design engineer will be contacted to address
any necessary design modifications.
• Installation procedures including grade, location, setbacks, septic tank size, and
absorption field size shall conform with the attached graphic details. Construction
activities and system components will not encroach upon existing easements or utility
corridors. A minimum of 6 ft of undisturbed soil shall be maintained between individual
absorption elements and the septic tank and/or adjacent absorption elements. Minimum
site specific setbacks for system components are:
Source Septic Tank Absorption Field Building Sewer
water line 10' 25' 10'
domestic well 50' 100' 50'
occupied bldng 5' 20'
property lines 10' 10'
subsoil drains 10' 25'
drainage channel 10' 25'
irrigation ditch
open 50' 50'
lined/gated 25 25'
solid pipe 10' 10'
• To avoid surface flow infiltration and saturation of the new absorption system,
abandonment of irrigation in the vicinity of the disposal system is required. Diversion
ditches necessary to divert surface flows around the new absorption bed must maintain
the minimum setbacks listed above.
• All sewer lines and effluent distribution piping shall be 4 inches in diameter and have
glued joints. INFILTRATORS shall be placed level in the absorption field. All lines
discharging sewage from the residence to the septic tank shall maintain fall of between
1/8 in. and 1/4 in. per foot and shall employ sweep 90's or 2-45's at all turns. Sewer lines
from the dwelling to the septic tank and at least 6 ft from the septic tank outlet must meet
minimum standard ASTM -3034. Sewer lines under driveways shall always meet
minimum Schedule 40 PVC standards and shall be encased with corrugated metal pipe or
flow fill when covered with less than 12" of soil.
Page 6 of 9
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
• The installer shall not place fill in the open excavation until inspected and approved by
the design engineer. Additionally, the final cover shall not be placed on sewer lines,
septic tank, or the absorption area until the system has been inspected and approved by
the design engineer. Provide 48 hour notice for all required inspections.
• Four inch clean outs shall be provided at maximum 100' intervals in all effluent lines
exceeding 100' in length.
• Prevent vehicle traffic and parking over the absorption field and repair area.
• A non -corrodible Orenco filter (model # FTW0444-36A) shall be installed at the final
outlet Tee of the septic tank or in the effluent line between the septic tank and the
absorption field to limit the size of solids and sludge passing into the absorption field.
The filter must be accessible for cleaning and replacement from the ground surface.
• The distribution box shall be set level on undisturbed native soil or a structural pad (e.g.,
compacted fill or concrete) to prevent settling and promote uniform distribution of flow
to the absorption field. A 45 degree bend shall be turned down on the septic influent line
to damp surge flows from the septic tank and promote equal distribution.
• The effluent distribution system shall be constructed in accordance with the "Infiltrator
Technical Manual" available from Infiltrator Systems Inc., 123 Elm Street, Suite 12, Old
Saybrook, Connecticut 06475.
• The surface cap shall consist of native soil mounded 5% over the absorption field to
promote surface runoff.
• The system contractor shall be aware of the potential for construction activities to reduce
soil permeabilities at the site through compaction, smearing, and shearing. The
following precautions and construction procedures should be employed during
installation to minimize disturbance to native soils:
i. Excavation should proceed only when the moisture content of the soil is below
the plastic limit. If a sample of soil forms a rope instead of crumbling when
rolled between the hands it is too wet and should be allowed to dry before
excavation continues.
ii. Excavation and backfill equipment should work from the surface where at all
practical to avoid compaction of the soils at depth.
iii. The bottom and sidewalls of the excavation should be left with a rough, open
surface. The appearance should be that of broken or ripped soil as opposed to a
sheared, smeared, or troweled surface. Any smoothed or smeared surfaces
should be removed with a toothed rake or shallow ripper taking care to remove
loose residues from the bottom of the trench by hand if necessary.
iv. Care should be taken in placing fill materials in the excavation to avoid
damaging the exposed soil surfaces.
Page 7 of 9
4.2 Operation - Maintenance and Inspections
• The owner shall install a structural barrier if necessary and take precautions to prevent
vehicular traffic, excessive surface watering, accidental flooding, or other activities in
the vicinity of the absorption field which may compact, saturate, or otherwise alter the
subsurface soil parameters used in designing the septic system.
• The owner will plant and maintain grass or other shallow rooted cover crop to prevent
erosion and promote evapotranspiration over the absorption field.
• The owner will inspect and maintain the required mounding and drainage away from the
absorption field to prevent saturation from precipitation and surface flows.
• To mitigate the generation of preferential flow channels which may compromise the
operation of the system, the owner will inspect and prevent intrusion of burrowing
animals and deep rooted plants into the absorption field.
• The septic effluent filter shall be inspected and cleaned as necessary every six (6)
months.
• The owner will conduct periodic maintenance of the septic system by removing
accumulated sludge from the septic tank every 3-4 years to prevent clogging of the
absorption field.
Page 8 of 9
5.0 Limitations
This report is a site specific design for installation of an individual sewage disposal system and is
applicable only for the client for whom our work was performed. Use of this report under other
circumstances is not an appropriate application of this document. This report is a product of Cronk
Construction Incorporated and is to be taken in its entirety. Excerpts from this report may be taken out of
context and may not convey the true intent of the report. It is the owner's and owner's agents
responsibility to read this report and become familiar with the recommendations and design guidelines
contained herein.
The recommendations and design guidelines outlined in this report are based on: l) the proposed site
development and plot plan as furnished to Cronk Construction Incorporated by the client, and 2) the site
conditions disclosed at the specific time of the site investigation of reference. Cronk Construction
Incorporated assumes no liability for the accuracy or completeness of information furnished by the client.
Site conditions are subject to external environmental effects and may change over time. Use of this plan
under different site conditions is inappropriate. If it becomes apparent that current site conditions vary
from those anticipated, the design engineer should be contacted to develop any required design
modifications. Cronk Construction Incorporated is not responsible and accepts no liability for any
variation in assumed design parameters.
Cronk Construction Incorporated represents this report has been prepared within the limits prescribed by
the owner and in accordance with the current accepted practice of the civil engineering profession in the
area. No warranty or representation either expressed or implied is included or intended in this report or
in any of our contracts.
Thomas A. Cronk, P.E.
Date
NOTE: This individual sewage disposal plan is meant to include the following four pages of
graphics including: 1) plot plan, 2) septic layout plan, 3) absorption field plan view, and 4)
absorption field cross section. The plan is not to be implemented in the absence of these related
graphics. In addition, results from the percolation test and soils evaluation are included for
reference as Appendix A.
Page 9 of 9
fenced graveled
storage yard
SILLS PROJECT - REOMAN
2001 CR 319, RIFLE
PLOT PLAN
JANUARY 14, 2006
SCALE. V=50'
244 acres w
w
0
perc test
excavation
1
1
1
1
1
1
1
1
a
W wi
WW U z
w u -�i a�wi
o a w Z I - CO
Q w o w w W W
:: w Z
zr^o °Z° -
WO
a az z❑moo
W o- ? o ,j Zia J Q CC❑_
,n -£u aF❑ ❑m ,n a
wWti4,1 � a oav, zaau Z❑ a�oaz
❑io wz v. ❑o' a� w i.,uv
F 01 J a❑OW Ln 4_
o �J0 J�` a' Oaz Z Ji �za
Z I£n4 wr K❑ L- 41
JOo in jjla
had jN NaZo HF - VwL.
-J,n"z o_w`° 01 000 0 o��Zw
o x oa
'-zo Zo.-xw❑��a0:oaa NiToa
zz
> J r w j Z❑ Z W w wow - 2 o i J a
al' VI 14 �WK--- Jti zwx �tia=
OC L-0.2 VI
aJw wa w woauw
0LI-ma zuam
0
a
W
W O
0 0
O O
L
O • 01o
0 0`
C 0
a
1
1
64
1
1
1
1
_
�▪ u
7Z
o<
1,0 li
a
hU
Fmx
P w
zyw
Z N �
PN ❑
w
iwo
N
w
J a
¢O
0-)
distribution box
septic influent
I•
absorption Field consisting of
3 rows of 19 Oulck4 Infiltrators
for a total of 57 units (Alternatively,
use 3 rows of 12 H-10 Infiltrators
for a total of 36 units)
76',typ.-Ouick4
(751,typ.-H-10)
48', typ (Quick4)
75',typ (H-10)
I I
6' min./
min.
/<10' recommended)
y
•
•
-
•
a
n`0
provide Inspection/venting ports
at each end of infiltrator
trenches as shown
ABSORPTION FIELD - PLAN VIEW
SCALE: 1'=20'
SILLS PROJECT - REDMAN JOB
2001 CR 319, RIFLE
ABSORPTION FIELD - PLAN VIEW
JANUARY 14, 2006
SCALE. 1'=20'
PROVIDE VENTING/INSPECTION
PORTS AS REQUIRED BY
INFILTRATOR INSTALLATION
GUIDELINES, TYP. EACH
ROW (ONE OF THREE)
SOIL CAP (MOUND 5Y.)
3/1 MAXIMUM
SLOPE, TYP.
EXISTING GROUND SURFACE
24' APPROx,
(10'MIN)
-44'
DISK OR SCARIFY UNDER
INFILTRATOR, TYP.
INFILTRATOR, INSTALL IN ACCORDANCE
WITH 'INFILTRATOR TECHNICAL MANUAL,
INFILTRATOR SYSTEMS INC., 123 ELM
STREET, SUITE 12, OLD SAYBROOK,
CONNECTICUT 06475
OUTLETS AS REQUIRED
9' 45' -BEND SURGE
FLOW SUPPRESSOR/
INLET
:IL :ir .IL :I :LL Il' Jf.' !f: ll.' .I -11-1-11=11=111:-=1-
1111.—
'=If=11=11 11:,11:� 11=11=11=11=:I1II11:l IIM1=1(III
COMPACTE NATIVE SOIL OR STRUCTURAL
FILL TO PREVENT SETTLING - = —
DISTRIBUTION BOX DETAIL
SCALE' 1'=1'
k— 72' MIN.,TYP. --x-
(120'
-a(120' PREFRRED)
ABSORPTION FIELD - CROSS SECTION
SCALE- 1'=5'
62'
-120'
SOILS LOG
(SEE NOTES)
SOILS LOG NOTES
#I - SANDY CLAY/SANDY SILT, LT BROWN TO TAN;
BLOCKY 6 FRIABLE
142 - PITRUN (lOnn-100nn), LT GRAY
#3 - CLAYEY SAND W/INTERMITTENT SAND
LENSES (10'-16' THICK), LT BROWN TO TAN
NO GROUNDWATER OR HIGH SEASONAL WATER
TABLE TO 120' BGS
SILLS PROJECT - REDMAN JOB
2001 CR 319, RIFLE
ABSORPTION FIELD - CROSS SECTION
JANUARY 14, 2006
SCALE. AS SHOWN
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
APPENDIX A
SOILS AND PERCOLATION REPORT
CRONK CONSTRUCTION INCORPORATED
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
CRONK
CONSTRUCTION
INCORPORATED
1129 •24- Road
• Grand Junction, CO 81505
970.245-0577, 970.257.7453 (fax)
SOILS AND PERCOLATION REPORT
Date: January 14, 2006
Prepared by:
Client:
Thomas A. Cronk, P.E.
1129 -24- Road
Grand Junction, CO 81505
245-0577
Jimmy Sills
Mann Creek Commons, LLC
45705 Highway 6&24
Glenwood Springs, CO 81601
(970) 947-8571
Property address: 2001 CR 319, Rifle, CO 81650
Tax schedule No.:
Legal Descript.:
1.0 Soils Evaluation
The site consists of approximately 2.44 acres of uncultivated native soil. Drainage is approximately 1%
to the east. A percolation test/soils evaluation was conducted on the property of reference on 01/13106
by Tom A. Cronk, registered professional engineer (R.P.E.).
Aperc excavation trench (south trench) was extended to a depth of 120" below ground surface (BGS).
There was no evidence of ground water or high seasonal water table in the open excavation to a depth of
120" BGS. The soils evaluation indicates three distinct soil horizons underlie the site. A lithological
description follows:
depth (in.) description
0" - 44" sandy clay/sandy silt, light brown to tan; blocky; friable
44" - 62" pitrun (l0mm-100mm), light gray
62" - 120" clayey sand with intermittent sand lenses (10"-16" thick), light brown to tan
Pere holes were constructed in the west excavation at a depth of approximately 42 in., in the east
excavation at a depth of approximately 54 in., and in the south excavation at a depth of approximately 96
in. The holes appeared to be well saturated at the time of the test. Results of the percolation test are
Page A-1 ofA-3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
shown in Table 1.
TABLE 1
Percolation Test Results
2001 CR 319, Rifle
Depth
Time on 01/13/06
Time
Perc
Rate
min/in
12:04
12:17
12:41
13:04
Drop
(west) 42" - 54"
5.5
6.1875
7.5
8.375
60/2.875
21
(east) 54" - 66"
5.625
6.5
7 5
8 25
60/2.625
23
(south) 96" - 108"
2.5
3.75
4 75
5.875
60/3.375
18
2.0 Conclusions and Recommendations
Soils at the site appear acceptable for implementation of an individual sewage disposal system (ISDS).
The following site-specific considerations should be observed during implementation of the ISDS:
• The bottom of the ISDS absorption field should be located as shallow as practical to
promote effective evapotranspiration and still maintain 48" of suitable infiltration soil
above the extent of the soils observation excavation located at 120" BGS. A design perc
rate of 40 min/in. is recommended for overall system sizing.
• Care should be taken during construction to avoid compaction and smearing of the
exposed infiltrative surfaces and preserve the natural permeability of the native soils.
Page A-2 of A-3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3.0 Limitations
This report provides a professional assessment of the feasibility of implementing an individual sewage
disposal system on the property of reference. The design parameters developed in this document are
representative of the site conditions disclosed at the specific time of the site investigation. Site
conditions are subject to change from external events both manmade (irrigation or pond construction)
and naturally occurring (flooding or excessive precipitation). Cronk Construction Incorporated is not
responsible and accepts no liability for any variation in assumed design parameters caused by external
events.
Cronk Construction Incorporated represents this report has been prepared within the limits prescribed by
the owner and in accordance with the current accepted practice of the civil engineering profession in the
area. No warranty or representation either expressed or implied is included or intended
in this report or
in any of our contracts.
Page A-3 of A-3
Thomas A. Cronk, P.E.