HomeMy WebLinkAbout03430i
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109 8th Street Suhe 303
Glenwood Springs, Colorado 81801
Phone (303) 945-8212
Permh N:
Assessor's Parcel No.
"" ' ,,; ~~.·
This does not constitute
a building or use permit. ' ' INDIVIDUAL SEWAGE DISPOSAL PERMIT
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1 PROPERTY
' ,• ', { I Legal Description of Assessor's Parcel No.-,--------:::----------------------------.[ E /...I G(L )'-( ~ f !:::'"" TS
· l SYSTEM DESIGN 1-j r"-OVJ '.:> o (-n
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______ Septic Tank Capacity (gallon) ______ Other
______ Percolation Rate (minutes/inch) Number of Bedrooms tor 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 _____________________ _
Othe•--------------------------------------------
Date j(. j.-0. OO Inspector 'by~ CxonK --~~------\~
RETAIN WITH RECEIPT RECORDS AT CONSTRUCTION SITE
*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.A.S. 1973. Revised 1984.
2. This permit ia 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 tor both legal action and revocation of the permit.
3. Any person who constructs, altars. 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 appllcatlon of permit commits a Class I, Petty Offense ($500.00 fine - 6
month• In jail or both) .
White -APPLICANT Y--DEPARTMENT
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INDIVIDUAL SEWAGE DISPOSAL SYSTEM APPLICATION
OWNER =°fu (.1 f.rlrf
ADDRESS Ao. b'1 i':>tr&:guc tAlo. 21b'JO PHONE 970 ·· ?i:iO ·l!z~
CONTRACTOR _ _,.,.,=---------------------------
ADDRESS _______________ ~
PERMIT REQUEST FOR (~ NEW INSTALLATION ( ) ALTERATION ( )REPAIR
Attach separate sheets or report showing entire area with respect to surrounding areas, topography of area, habitable
building, location of potable water wells, soil percolation test holes, soil profiles in test holes (See page 4 ).
LOCATION OF PROPOSED FACILITY:
Near what City of Town _ _,&""""$..,F:i..,2ijui...,,VS.,___--= ________ __,S,...iz..,,e"-'o"'-f""-L"'otc__.._.,3.,,,<t...LIA9¥.""""'""S'----
Legal Description or Address _...,./O'""'t"-®~----"C,"-~-'-=d-_6_<f'--_l><,--"4.b.....,eq,t-14u ..... £.'--0J----'r'-l-~ ...... 1 ..... o...._ __ _
WASTES TYPE: ()<} DWELLING ( ) TRANSIENT USE
( ) COMMERCIAL OR INDUSTRIAL ( ) NON-DOMESTIC WASTES
( ) OTHER-DESCRIBE _______________ _
BUILDING OR SERVICE TYPE: ______________________ _
NumberofBedrooms _ _..,.._ __________ _
( ) Garbage Grinder ()<O Automatic Washer
SQURCEANDTYPEOFWATERSUPPLY: ( ) WELL
Number of Persons ~:2.~---
(.><l Dishwasher
( ) SPRING ( ) STREAM OR CREEK
If supplied by Community Water, give name of supplier: __ C=l2=71atJ='-'--------------
DISTANCE TO NEAREST COMMUNITY SEWER SYSTEM:___,J..___M"""""'''-----------
Was an effort made to connect to the Community System?__,...._ ____________ _
A site plan is required to be submitted that indicates the foUowing MINIMUM distances:
Leach Field to Well: 100 feet
Septic Tank to WeU: SO feet
Leach Field to Irrigation Ditches, Stream or Water Coune: SO feet
Septic System to Property Lines: 10 feet
YOUR INDIVIDUAL SEWAGE DISPOSAL SYSTEM PERMIT WILL NOT BE ISSUED WITHOUT
A SITE PLAN.
GROUND CONDITIONS:
Depth to first Grmmd Water Table ______________________ _
Percent Ground Slope __________________________ _
2
TYPE OF INDIVIDUAL SEWAGE. DISPOSAL SYSTEM PROPOSED:
<)Q SEPTIC TANK ( ) AERATION PLANT ( ) VAULT
( ) VAULT PRIVY ( ) COMPOSTING TOILET ( ) RECYCLING, POTABLE USE
( ) PITPRIVY ( ) INCINERATION TOILET ( ) RECYCLING, OTHER USE
( ) CHEMICAL TOILET ( ) OTHER -DESCRIBE
FINAL DISPOSAL BY:
<'>6 ABSORPTION TRENCH, BED OR PIT ( ) EV APOTRANSPIRA TION
( ) UNDERGROUND DISPERSAL ( ) SAND FILTER
( ) ABOVE GROUND DISPERSAL ( ) WASTEWATER POND
( ) OTHER -DESCRIBE
WILL EFFLUENT BE DISCHARGED DIRECTLY INTO WATERS OF THE STATE?
PERCOLATION TEST RESULTS· (To be completed by Registered Professional Engineer, if the Engineer does the
Percolation Test)
Minutes ____ -rer inch in hole No. 1 Minutes _____ p,er inch in hole NO. 3
Minutes per inch in hole No. 2 Minutes per inch in hole NO._
Name, address and telephone ofRPE who made soil absorption tests: <l=M..vA ;Jc.y; uAJD_,lf .. ,_/ l\£V.J£'l'"
141./J /llhra.e Sc <Dvnvti 14: (,c/o. J1Sos cno-d.q;J.-.f16i
Name, address and telephone ofRPE responsible for design of the system: ke<>1K. (Jw~T,
l/:).q ;ic; 41, C,J; C1b. iK/¥ Cha-?-4<-Q~71
Applicant acknowledges that the completeness of the application is conditional upon such further mandatory and
additional tests and reports as may be required by the local health department to be made and furnished by the applicant
or by the local health department for purposed of the evaluation of the application; and the issuance of the pemrit is
subject to such terms and conditions as deemed necessary to insure compliance with rules and regulations made,
information and reports submitted herewith and required to be submitted by the applicant are or will be represented to
be true and correct to the best of my knowledge and belief and are designed to be relied on by the local department of
health in evaluating the same for purposes of issuing the permit applied for herein. I further understand that any
fillsification or misrepresentation may result in the denial of the application or revocation of any permit granted based
upon said application and in legal action for perjury as provided by law.
Signed ;;;;; IM Date q-;;q-a1
PLEASE DRAW AN ACCURATE MAP TO YOUR PROPERTY!!
3
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RECEIVED NOV 3 0 2000
CRONK
CONSTRUCTION
INCORPORATED
• 1129 ·24· Road
Grand Junction, CO 81505
970·245·0577, 970·257·7453 (fax)
October 11, 2000
CERTIFICATE OF INSPECTION AND ACCEPTANCE
Individual Sewage Disposal System
Kyle Residence
Approximately: I 0800 County Road 204
DeBeque, CO 81630
The individual sewage disposal system of reference was inspected on October 11, 2000. 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 July 20, 2000. Copies of the engineered
plan may be obtained from the undersigned design engineer.
Thomas A. Cronk, P.E.
1129 -24-Road
Grand Junction, CO 81505
303-245-0577
~-·-.,
KYLE RESIDENCE
10800 COUNTY ROAD 204
ASBUIL T DRA'w'ING
OCTOBER 11, 2000
SCALE: 1'=20' NORTH
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•
CRONK
CONSTRUCTION
INCORPORATED
• 1129 ·24-Road
Grand .lunctlon, CO 81505
970·245·0577, 970·257·7453 (faxJ
INDIVIDUAL SEWAGE DISPOSAL SYSTEM DESIGN
Date:
Prepared by:
July 20, 2000
Thomas A. Cronk, P.E.
Cronk Construction Inc.
1129 -24-Road
Grand Junction, CO 81505
245-0577
Type of Design: New Residence
Owner: Terry Kyle
P.O. Box67
DeBeque, CO 81630
970-283-590l(hm), 970-260-1875 (wk)
Property address: approximate: 10800 County Road 204, DeBeque, CO 81630
Tax schedule No.: 290716
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1.0 Site History
The site consists of approximately 35.97 acres of uncultivated native soils. Drainage in the area of concern
is approximately 4% to the south. A perc test/soils evaluation was conducted on the property by Tom A.
Cronk, registered professional engineer (R.P.E.), on 07/13/00 to provide subsurface design parameters for a
new individual sewage disposal system (ISDS). An engineered ISDS design has been prepared for the
property. The 07/13/00 investigation is attached for reference as Appendix A. A discussion of developed
design parameters and the engineered design follow.
2.0 Development of Design Parameters
Three perc excavations were extended to depths of36" below ground surface (BGS). There was no evidence
of ground water in the soils profile hole excavated in the immediate vicinity to a depth of 120" BGS. The high
seasonal water table was estimated at a depth of I 08" BGS. The locations of the pere excavations and the
soils profile excavation are shown on the attached plot plan. The soils evaluation indicates two distinct soil
horizons underlie the site. A lithological description follows:
depth (in.)
O" -2411
24"-120"
description
silty/sandy clay, light tan to light brown; soft and friable
gravel (sandstoneX5mm-50mm) in light brown sandy clay matrix
Pere holes were constructed in the bottom of each of the three shallow perc excavations. The pere holes
extended from approximately 36" below ground surface (BGS) to approximately 52" BGS. Pere rates for the
three perc holes are 51 min/in., 29 min/in., and 11 min/in. At the owners request, an INFILTRATOR
absorption field is proposed for the site. A designperc rate of60 min/in. is chosen for overall system sizing.
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3 .0 System Design
An INFILTRATOR absorption field is proposed for discharge of septic effluent at the site. Natural drainage
in the area of the proposed absorption field is approximately 4.0% to the south. The absorption field will be
oriented with its shortest dimension (i.e., width) parallel to the natural slope (i.e., south) to minimize the
elevation change of the natural ground surface underlying the system. Construction of the system will consist
of preparing a level excavation under the proposed absorption field by removing a minimum of 36" of the
surface soils and root structure. Because of the sloping topography, construction of a level excavation will
require removal of approximately 42" of native surface soils from the uphill side of the absorption field (see
attached construction detail). Following completion of the initial push-out, the open excavation will be disked
or scarified.
After the initial excavation has been prepared, INFILTRATORS will be used to construct a septic effluent
distribution system. 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. The INFILTRATOR system will provide a minimum of 4.0 ft of usable
infiltration soil between the septic effluent discharge piping and the HSWT located at a depth of 108" BGS.
After the INFILTRATORS are installed, the absorption field will be covered with a soil cap. The soil cap will
consist ofa minimum of24" 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 existing septic tank
to the absorption field by field verification of assumed design parameters. Assumed design parameters with
respect to gravity discharge include:
•
•
distance from the sewage pipe at exit from the foundation line to the absorption field • 60' or
less,
elevation of the ground surface at entry to the absorption field shall be no more than 14"
above the invert elevation of the sewage pipe at exit from the foundation line.
If field measurements do not confirm these design assumptions, gravity discharge of sewage effluent from the
existing residence to the absorption field can not be assured and a lift pump may be required. Please contact
the design engineer address any design modifications necessary for effective operation of the ISDS if the above
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. Additionally, any unknown utility lines, easements, or other
adverse conditions disclosed during construction must maintain the required setbacks listed on page 5 of this
document.
A I 000 gallon septic tank will be installed to provide a minimum of 30 hours retention time for sewage
effluent from the proposed two bedroom residence. As discussed above, an INFILTRATOR absorption field
is proposed to discharge septic effluent to the underlying sub-soils. As shown in the attached graphics, the
absorption field will consist of 40 standard INFILTRATOR units and shall be 12 ft by 62.5 ft in lateral
dimensions. The absorption field will encompass a gross area of750 square feet with an effective area ( 15.5
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sq. ft.IINFILTRATOR) of620 sq. ft.
Calculations and design parameters used to sin: the absorption field follow.
DESIGN CALCULATIONS
AVERAGE FLOW FOR 2 BEDROOM HOME@ 150 GAL.IBEDROOM-DAY
2 X 150 = 300 GAL.IDA Y
PEAK FLOW = 150% OF AVERAGE = 450 GAL.IDAY
DESIGN PERCOLATION RATE = 60.0 MIN.IINCH
A = Q lj WHERE 5 v•, ,
A = ABSORPTION FIELD AREA
Q =PEAK FLOW
t = PERC TIME/INCH
A = 45 o ./60.0 = 697.14 SQUARE FEET
5
INCREASE ABSORPTION AREA BY 40% FOR AUTOMATIC WASHER
DESIGN AREA = 697.14 X 1.4 = 976.00 SQUARE FEET
SIZE ADJUSTMENT FACTOR OF 0.6 FOR INFILTRATOR SYSTEM
ADJUSTED AREA = 976.00 X 0.6 = 585.60 SQUARE FEET
ABSORPTION FJELD SIZED AT 12 FT. x 62.5 FT. = 750.0 SQUARE FEET
USE 40 STANDARD (H-10) INFILTRATORS@ 15.50 SQ. FT. EACH
FOR TOTAL ABSORPTIVE AREA OF 40 X 15.50 = 620.00 SQUARE FEET
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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 llS 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 e11Sements 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 Smtic Tank AbsQ!l!tion Field Building Sewer
water line 10' 25' 10'
dwelling 10' 20'
property lines 10' 10'
subsoil drains 10' 25'
irrigation ditch
open 50' 50'
lined/gated 25 25'
solid pipe IO' IO'
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 I /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 when covered with less than 24"
of soil.
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•
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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. The installer shall provide 48 hour notice to the engineer for all required
inspections.
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 be mounded 5% over the absorption field to promote surface runoff
Backs loping of the surface cap from the cap perimeter elevation to the existing ground
surface shall consist of maintaining a maximum slope of 3/1 (33%) to the existing ground
surface to minimize erosion. The existing ground surface under the basal extent of the soil
cap shall be disked or scarified to enhance subsurface absorption.
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.
II.
iii.
iv.
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.
Excavation and backfill equipment should work from the surface where at all
practical to avoid compaction of the soils at depth.
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 excavation by hand if necessary.
Care should be taken in placing fill materials in the excavation to avoid damaging the
exposed soil surfaces.
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4.2 Ooeration -Maintenance and Inspections
•
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•
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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 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.
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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 perfonned. 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: I) 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 infonnation 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. !fit 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.
SEAL
Thomas A. Cronk, P. E.
11~£,C:~
Date~ }-OJ c lRU
NOTE: This individual sewage disposal plan is meant to include the foUowiog three pages of graphics
including: I) plot plan, 2) septic layout plan, and 3) construction details (absorption field plan view, and
absorption field cross section). The plan is not to be implemented in the absence of these related
graphics. Io addition, results from the percolation test and soils evaluation are included for reference
as Appendix A.
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" "' "' "'
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S89'30'45'E
200.50'
!!
35.97 o.cres
KYLE RESIDENCE
10800 COUNTY ROAD 204
PLOT PLAN
JULY 17, 2000
SCALE1 t •=200' NORTH
ga.ro.ge
clst rn
"'~·1~0·
perc test ~100'
loco. tlons 120,
er Line
E!'sldence
SOl(s
observa tlon
hole
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NOTE
CALL 1-800-922-1987 FCR UTILITY
LOCATES llEF"CRE EXCAVATING
NOTE
GRAVITY DISCHARGE OF SEllAGE
EFFLUENT FROM THE RESIDENCE
TO THE DISPOSAL SYSTEM IS
BASED ON THE FOLLOVING DESIGN
ASSUMPTIONS•
LENGTH OF SEVAGE PIPING
FROM EXIT AT FOUNDATION
LINE TO ENTRY TO ABSORPTION
F"!ELD • 60' OR LESS
ELEVATION OF GROUND SURFACE
AT ENTRY TD ABSORPTION fIELD
NO MORE THAN 14" ABOVE INVERT
ELEVATION OF SE'WAGE PIPE AT
EXIT FROM FOUNDATION LIN£
DISC! AIMER
IF THESE DESIGN ASSUMPTIONS ARE
NOT UPHELD DURING CONSTRUCTION,
GRAVITY DISCHARGE CAN NOT BE
ASSURED AND A LIFT STATION HAY
BE REQUIRED
NOTE
THE FOLLDlllNG SETBACKS
HUST BE "AlNTAINED•
SEPTIC ABSORPTION
TANK FIELD
SPRINGS-------='i5iioii'· '----'-'\11\100¥·--
llELLS -------50' 100'
CISTERN 25' 25'
STREAM so· so·
DOMESTIC 'WATER LINE -10' 2S'
drive
\
COUNTY ROAD 20~
---[
2S' setback r'Oollus
fro,., cistern to o.ny
ISDS C:Ol'lpone,,t. typ
' '
' \
c{lstern \
/ .. t•)Un•
\
perc: test ~-------------------' locotloris
four ~o•S of ten
sto.ncla.rcl lnf'lltro:tors
I! rf1~~~~~
1000 gallo,.,
septic to.f'1k
n..If-_: E I ~ -----l.2.5''-----.-'-----:10•,.,in.-----<
\ I 0 0 111 . repQlr o.rea
\ I ' / ' / ...... / ---
KYLE RESIDENCE
10800 COUNTY ROAD 20<
SEPTIC LAYOUT PLAN
JULY 20, 2000
SCALE• t •=40' NORTH
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SEPTIC INFLUENT
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'o ~~<
~"f.r;;;.cr:;)
e'('t. ~
,E "f. •+1.,r,"f.~ o•~ : L'1il::it.t!i
< Jl(.cF o" li;~"f.C°'o"-°'\. "'' ' ,or
PERIMETER OF INFIL TRAT DR SEEP AGE BED rovlt'lle ventln s re Ir p ga quPd
Dy lnf'IVtrator lnstallo.tlon
guldellne!IO, typ.
ABSCRPTI~ F"IE:LD -PLAN VIE'J
SCALE1 1 '•10'
JNFIL TRATOR, INSTALL IN ACCORDANC(
'JITH 'INFIL TRATDR TECHNICAL HANUA(.,
INFILTRATOR SYSTEMS INC .. 123 ELM
STREET, SUITE 12. OLD SAYBDOK,
CONNECTICUT 0&475
EXISTING GROUND SURFACE
SOIL CAP CHDUND SY.l
x
0
L
R I • N I l_""-.-~.IUIL.~--"Ul[..___ll!Ull_~~ -24•
f.--:.,._-----~12··---~~-~-'--__..
'----DISK OR SCARIFY UNDER-----'
INFILTRATOR BED
------
HIGH SEASONAL 'JATER -120·
SOILS LOG
CSEE NDTESl
ABSa!l'TllJll F"IE:LD -CROSS SECTICN
SCALE• 1'•'1'
KYLE RESIDENCE
10000 COUNTY RCAD 204
CONSTRUCTION DETAIL
JULY 20, 2000
SCALE• AS St<l'w'N NORTH
SOILS LOG
#1-SIL TY /SANDY' CLAY, LIGHT
TAN TD LIGHT BRO'WNJ
SOFT AND fR!ABLE
M2-SANDSTONE CRAVEL <S~l"I
TD 501"1r1) IN LIGHT BRO'WN
SANDY CLAY MATRIX
NO STANDING GROUND'WATER TO
120' BELOIJ GROUND SURFACE
HIGH SEASONAL 'JATER TABLE
ESTIMATED AT !OB' BELO'w'
GROUND SURFACE
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I APPENDIX A
I SOILS AND PERCOLATION REPORT
I CRONK CONSTRUCTION INCORPORATED
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CRONK
CONSTRUCTION
INCORPORATED
• 1129 ·24· Road
Grand Junction, CO 81505
970·245·0577, 970·257·7453 (fax)
Date:
Prepared by:
Client:
Property address:
Tax schedule No.:
Legal Descript.:
1.0 Soils Evaluation
SOILS AND PERCOLATION REPORT
July 13, 2000
Thomas A. Cronk, P.E.
1129 -24-Road
Grand Junction, CO 81505
245-0577
Terry Kyle
PO Box67
DeBeque, CO 81630
(970) 283-5901 /260-1875
Approximate: I 0800 County Road 204, DeBeque, CO 81630
290716
Parcel B, Alyenbem Parcels
The site consists of approlCimately 35.97 acres of uncultivated native soil. Drainage is approximately 4% to
the south. A percolation test/soils evaluation was conducted on the property ofreference on 07 /13/00 by Tom
A. Cronk, registered professional engineer (R.P.E.).
Threeperc elCcavations were ClCtended to depths of36" below ground surface (BGS). There was no evidence
of ground water in the soils profile hole excavated in the immediate vicinity to a depth of 120" BOS. The high
seasonal water table was estimated at a depth of I 08" BGS. The soils evaluation indicates two distinct soil
horizons underlie the site. A lithological description follows:
depth (in.)
0" -24"
24" -120"
description
silty/sandy clay, light tan to light brown; soft and friable
gravel (sandstoneX5nun-50mm) in light brown sandy clay matrix
Pere holes were constructed in the bottom of each of the three shallow perc excavations. The perc holes
extended from approximately 36" below ground surface (BGS) to approximately 52" BGS. The perc holes
appeared to be well saturated at the time of the test. Results of the percolation test are shown in Table I.
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TABLE 1
Percolation Test Results
I 0800 Counrv Road 204
Depdt Timeon07/13/00 Time Pere
Drop Rat<
OHO 08:00 08:50 mu\lm
West Hole 4.5 l.O 5.875 7011.375 50 91
North Hole 3.75 4.625 6.125 7012.375 29 47
East Hole 3.50 6.875 10.00 7016 50 JO 77
A~
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 bonom of the ISDS absorption field should be localed no deeper than 60" BGS co main<ain 4' of usable
infiltration soil above the HSWf localed at JOB" BGS. A weighted design perc rate of 50 min/in. is
recommended for overall system sizing for subsurface discharge at a depth ranging from 36" to 60" BGS.
• Care should betaken during construction to avoid compaction and smearing of the exposed infiltrative surfaces
and preserve the natural permeability of the native soils.
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 manrnade (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.
SEAL
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