HomeMy WebLinkAbout03588'• '
GARFIELD COUNTY BUILDING AND SANITATION DEPARTMENT
109 8th Street Suite 303
Glenwood Springs, Colorado 81601
Phone (303) 945·8212
INDIVIDUAL SEWAGE DISPOSAL PERMIT
PROPERTY
Permit N~ 3588
Assessor's Parcel No.
This does not constitute
a building or use permit.
IV1. '{ 2-ei·s nc;P~.~~~~s 3(,1Jor#.r1d./J < ef-. A PA~~~~~ JC(:5 J.j Ka/
System Location ___ --+/~tf~7_o~O~i<.~3®"--""----'-(JG---'~--'-('a-"-'' ""'--( -'-'-h u""-'f-"'(.---'Q.,'--"i?'-'-{----'(, .3,__:;;«._ __
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Owner's Name& f(\f
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Legal Description of Assessor's Parcel No. _____ Lo---'+ _ _../ __ ~~~~-f1-1fi--=O_Su=_,_,,~"'---''---'/:;"'f,\1....,,1":_,IY1q(''---f)..:.'-=o'-'-Y\,_ _____ _
: SYSTEM DESIGN
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______ Septic Tank Capacity (gallon) ______ Other
______ Percolation Rate (minutes/inch) Number of Bedrooms (or other) ____ _
Re~uired 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 -J~r-----~&~..st> ....... ----<-<.~4----·-:J+r---.~.-=---~.t-~,c~{ .. ,~r -+.(¥~,· ~aiq-1>.--~-1-141--~.
Date 'f12 1lo1.--Inspector ~\ b~<fZ p ,tJ.. I·
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.R.$. 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 f
variation from the terms or specifications contained in the application of permit commits a Class I, Petty Offense ($500.00 fine - 6
months in jail or both).
White -APPLICANT Yellow -DEPARTMENT
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INDIVIDUAL SEWAGE DISPOSAL SYSTEM APPLICATION
:W::ss n;a~~: E~;ZeiS
CONTRACTOR ____________________________ _
ADDRESS _______________ _
PERMIT REQUEST FOR (!ANEW 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'-'a~t~a~lh~w~t<... ____________ ~S=iz=e~o=f=L=ot.___JS_. '7_&>_a_t.r.---'t'6'--+_-
Legal Description or Address ____ __,,C""-'-f1_,__..., 3012=-'---P,--'a.:....:.i..(YAC{.,~=u._,_+__;:e...'-. ----------
WASTES TYPE: ( ...,.-r5\VELLING ( ) TRANSIENT USE
( ) COMMERCIAL OR INDUSTRIAL ( ) NON-DOMESTIC WASTES
( ) OTHER-DESCRIBE _______________ _
BUILDING OR SERVICE TYPE: ___ ~~e_~~~·~&~e~f\._c.R._~ ______________ _
Number of Bedrooms _.J>.<. ___________ _ Number of Persons 3 ------
<vY" Garbage Grinder (i.-}-1\.utomatic Washer (~hwasher
SQURCE AND TYPE OF WATER SUPPLY: (i.,..}--WELL ( ) SPRING ( ) STREAM OR CREEK
If supplied by Community Water, give name of supplier: _______________ _
DISTANCE TO NEAREST COMMUNITY SEWER SYSTEM:_--+7"""1n..,.1.._,'L"--""'1.:>.__ _____ _
Was an effort made to connect to the Community System? __ ~n-'"'b'------------
A site plan ls regulrecl to be submitted that Indicates the following MINIMUM distances:
Leach Field to Well: 100 feet
Septic Tank to Well: SO feet
Leach Field to Irrigation Ditches, Stream or Water Course: 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 Ground Water Table ______________________ _
Percent Ground Slope __________________________ _
2
" TYPE OF INDIVIDUAL SEWAGE DISPOSAL SYSTEM PROPOSED: --
... (~SEPTIC TANK ( ) AERATION PLANT ( ) VAULT
( ) VAULT PRIVY ( ) COMPOSTING TOILET ( ) RECYCLING, POT ABLE USE
( ) PIT PRIVY ( ) INCINERATION TOILET
( ) CHEMICAL TOILET ( ) OTHER -DESCRIBE
FINAL DISPOSAL BY:
(v'f ABSORPTION TRENCH, BED OR PIT
( ) UNDERGROUND DISPERSAL
( ) ABOVE GROUND DISPERSAL
( ) RECYCLING, OTIIER USE
( ) EV APOTRANSPIRATION
( ) SAND FILTER
( ) WASTEWATERPOND
( ) OTHER-DESCRIBE._~~~~~~~~~~~~~~~~~~~-
WILL EFFLUENT BE DISCHARGED DIRECTLY INTO WATERS OF THE STATE?___.n'-1..=o ____ _
PERCOLATION TEST RESULTS: (To be completed by Registered Professional Engineer, ifthe Engineer does the
Percolation Test)
Minutes. ____ _,.er inch in hole No. I Minutes ______ per inch in hole NO. 3
Minutes er inch in hole No. 2 Minutes er inch in hole NO.
Name, address and telephone ofRPE who made soil absorption tests: ______________ _
address and tel~hone ofRPE responsible for design of the system: G~ofedM\\ ta/ €" '!!i llt! c
t/lo G ~ o.""&. .J \.o\"' ::\1 o"' CA::, -be s1 n t-"e"'-e.5+
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 permit 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
falsification 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.
PLEASE DRAW AN ACCURATE MAP TO YOUR PROPERTY!!
3
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Geoteehnieal I ... Engineering
I Group, lne.
March 13, 2002
Martha Berry
36 North Ridge Court
Parachute, CO 81635
1 µ SfJGc/r o l.f
{5, '-( G r.o 7 &C 4 .
Subject: Individual Sewage Disposal Observation
Corner of Spring Creek and 300 Road
Garfield County, Colorado
Job No. 877
Dear Ms. Berry,
As requested, a Geotechnical Engineering Group (GEG) representative met with
the contractor representative to observe septic system installation at the subject site on
March 6, 2002. The purpose of this letter is to transmit our final observations and field
"as built" drawing of the system installation.
At the time of our site visit, the absorption system was installed, prior to final
cover. Field measurements indicated the installation was completed in general
conformance with the "Individual Sewage Disposal System Design" prepared for the
subject site by GEG (Job No. 877), dated September 28, 2001. A field "as built"
drawing showing the system installation is attached as Fig. 1. In our opinion, care
should be exercised to confirm county setback requirements are also met.
We appreciate the opportunity to provide septic system design I construction
services. If we can be of further service, please call.
Sincerely,
GEOTECHNICAL ENGINEERING GROUP, INC.
gory G. Poettatilrf:::ifrr-
Staff Engineer
GGP:JPW:mk
(3 copies sent)
Geotechnical, Environmental and Materials Testing Consultants
(970) 245-4078 • fax (970) 245-7115 • geotechnicalgroup.com
685 West Gunnison Avenue, Suite 110, Grand Junction, Colorado 81505
'
Note: This figure was developed
from a site plan provided by Jeff
Dickenson, Energy and
Sustainable Design's.
Clean out
Proposed
Residence
Footprint
Property
Line
Infiltrator Sections
35"w x 74•1x14"h
(typical)
All pipe Is 4-lnch schedule 40 PVC,
All bends sweep bends, Infiltrators
placed on native, level soils,
3'8" or greater of Frost cover.
Septic tank
1000 gallon capacity
4' (typical)
Property
Line
Job No. 877 Field As Built Septic System Location Fig. 1
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-------------------Geotechnical
I •• Engineering
I Group, Inc.
INDIVIDUAL SEWAGE DISPOSAL SYSTEM DESIGN
Proposed Single Family Residence
Spring Creek and 300 Road
Garfield County, Colorado
Prepared For:
Ms. Martha Berry and Mr. Rob Zeis
36 North Ridge Court
Parachute, CO 81635
Job No. 877
September 28, 2001
Geotechnical, Environmental and Materials Testing Consultants
(970) 245-4078 • fax (970) 245-7115
685 West Gunnison Ave., Suite 110, Grand Junction, Colorado 81505
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TABLE OF CONTENTS
SCOPE ........................................................•...................................................... 1
SUMMARY OF CONCLUSIONS ........................................................................ 1
SITE CONDITIONS ........................................•................................................... 2
PROPOSED CONSTRUCTION ......................................................................... 3
PERCOLATION TESTING ................................................................................. 3
DESIGN CALCULATIONS ..............•................................................................. 4
SYSTEM DESIGN .............................................................................................. 5
SYSTEM INSTALLATION ................................................................................. 7
OPERATION AND MAINTENANCE .................................................................. 9
LIMITATIONS ...........................................•...................................................... 10
FIG. 1 ·VICINITY MAP
FIG. 2 ·LOCATION OF EXPLORATORY TEST PITS
FIG. 3 ·LOCATION OF PROPOSED ABSORPTION SYSTEM
FIG. 5 ·ABSORPTION FIELD CROSS SECTION
APPENDIX A· SOILS PERCOLATION TEST RESULTS
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SCOPE
This report presents the results of our Individual Sewage Disposal System
Design to be located north and west of Spring Creek Road and 300 Road in
Garfield County, Colorado. Our investigation was conducted to evaluate
subsurface conditions and provide design criteria for the proposed sewage
disposal system. The report includes descriptions of subsoil and groundwater
conditions found in one soil profile test pit, percolation test data from three
percolation holes and design and construction criteria for the proposed sewage
disposal system. The report was prepared from data provided by our client and
developed during our field exploration, engineering analysis and experience with
similar conditions.
SUMMARY OF CONCLUSIONS
1. Subsoils found in the percolation profile test pit included 6 feet of
sandy clay underlain by clayey sand to the maximum depth explored
of 8 feet below ground surface. Groundwater was not found in the
test pit at the time of observation, one day after excavation.
Measured percolation rates ranged from 10 to 40 minutes per inch.
2. The proposed sewage disposal system for this site is an infiltrator
trench system. We recommend 3 trenches with a length of 64 feet
and a width of 3 feet, encompassing a total absorption area of 576
square feet. Detailed design, installation, and operations and
maintenance recommendations are included in the text of this report.
Berry I Zeis Residence
GEG Job No. 877
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3. Geotechnical Engineering Group, Inc. and Garfield County Building
and Sanitation Department should be called to observe and
document system installation, prior to backfill.
4. An area located east of the proposed system is designated the
"future repair area". This area should be set aside for potential
septic system remediation. In no case should the proposed system
area or future repair area be constructed with a structure or
pavement.
SITE CONDITIONS
The subject site is located north and west of the intersection of Spring
Creek Road and 300 Road in Garfield County, Colorado. A vicinity map is
included as Fig. 1. The subject site was basically flat and level and 12 to 15 feet
higher in elevation than the ground surface towards the north and west. North and
west of the site the ground surface sloped down at approximately 25 to 30
degrees. Vacant grass covered land was north. Rolling, brush covered terrain
was south, east and west. The Colorado River was west beyond the rolling terrain.
The site was accessed from the south. The vicinity of the subject site sloped
down toward the north and east at approximately 1 to 1 O percent (USGS,
Parachute, Colorado topographic quadrangle dated 1962).
Berry I Zeis Residence
GEG Job No. 877
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PROPOSED CONSTRUCTION
We understand the subject residence will have two (2) bedrooms, 2 baths,
one (1) washing machine, and one (1) garbage disposal. Proposed construction
includes an individual sewage disposal system (ISDS) to service the subject
residence. An infiltrator type system is desired for the individual sewage disposal
system. If proposed construction changes or is different from what is stated, we
should be contacted to review actual construction and our recommendations.
PERCOLATION TESTING
A Geotechnical Engineering Group, Inc. (GEG) representative observed a
soil profile exploratory test pit (TP-3) and performed percolation testing on August
22, 2001. Percolation test pits (P-1, P-2 and P-3) were excavated to a depth of
three feet and a 12-inch depth percolation hole augered at the bottom, and
prewetted on August 21, 2001 by others. The locations of test pits are shown
graphically on Fig. 2.
Subsurface conditions encountered in the profile test pit consisted of 6
feet of sandy clay underlain by clayey sand to the maximum depth explored of 8
feet. Groundwater was not encountered in the profile test pit at the time of
Berry I Zeis Residence
GEG Job No. 877
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observation, one day after excavation. High seasonal groundwater is estimated
to be at 8 feet below the ground surface. The nearest potential water sources
identified were dry washes, located 55 feet east and 80 feet south of the
proposed absorption area. The Colorado River was approximately 200 feet west
of the subject site. Measured percolation rates ranged from 10 to 40 minutes per
inch. We assumed a percolation rate of 30 minutes per inch for design
calculations. Results of percolation testing are included in Appendix A, attached.
DESIGN CALCULATIONS
We understand that an infiltrator type system is desired. We believe an
infiltrator system can perform satisfactorily for the proposed residence. We
believe a trench infiltrator distribution system can perform satisfactorily for the
proposed absorption area. Calculations and design parameters used to size the
absorption field follow:
Proposed ISDS Area Calculations
Number of Bedrooms = 2
Design percolation rate = 30 minutes/inch
Square feet per bedroom = 395 square feet (per Garfield County)
Berry I Zeis Residence
GEG Job No. 877
A= 395 x 2
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A = 790 square feet
Increase area 20% for garbage disposal (per Garfield County)
A = 790 x 1.2 = 948 square feet
Reduce absorption area by 40% for infiltrator system
A= 948 x 0.6 = 569 sq11are feet
Three, 3-foot wide trenches, 64 feet long = 576 sq11are feet
SYSTEM DESIGN
For purposes of design, we estimate a high seasonal groundwater 8 feet
below the ground surface. The proposed system will provide 4 feet of usable
infiltration soil between the bottom of the infiltrator system and the estimated high
seasonal water table. These calculations were performed assuming a 34-inch by
75-inch by 16-inch "Infiltrator" high capacity chamber system with a capacity of
122 gallons per "Infiltrator" section.
1. A minimum size of 750 gallon septic tank is required by Garfield
County for septic effluent from the proposed two bedroom residence.
The septic tank should be equipped with a removable, cleanable
filter at the outlet. As discussed above, an infiltrator trench system is
proposed to discharge septic effluent to the underlying subsoils. The
design absorption area will be a minimum of 576 square feet.
2. Three infiltrator trenches having a length of 64 feet and a width of 3
feet are recommended. The bottom of the infiltrators should be
deep enough to allow for a 3 foot cover to protect from frost over
Berry I Zeis Residence 5
GEG Job No. 877
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3.
4.
5.
6.
top of infiltrator. There should be a 6 foot distance between each
trench, sidewall to sidewall. Details of the system are included on
Figs. 3 and 4, attached.
Splash blocks should be installed at the inlet to prevent premature
erosion of soil below inlet.
After the infiltrators are installed the system should be backfilled
and mounded (typical 5%) to promote surface drainage away from
the absorption area.
The area located east of the proposed absorption system is
designated the future repair area, see Fig. 2. The future repair area
should be set aside for potential septic system remediation. In no
case should this area be constructed with a structure. The same set
back and grade requirements apply to the future repair area as the
absorption system area.
At least 18 inches of soil cover is recommended for all ISDS
elements (excepting maximum 8 inches soil cover over septic access
ports) to mitigate frost concerns.
The installer should confirm the feasibility of gravity discharge of sewage
effluent from the residence to the absorption field. If field measurements do not
confirm the 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 and Garfield County building and
Sanitation Department to 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
Berry I Zeis Residence
GEG Job No. 877
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conditions disclosed during construction must maintain the required setbacks. The
proposed residence must be located to maintain required ISDS setbacks as well
as provide compliance with Garfield County Planning Department zoning setbacks.
Finally, implementation of a repair absorption field east of the proposed system
may require future installation of a lift station to provide discharge of septic effluent
from the tank to the repair absorption field.
SYSTEM INSTALLATION
The owner and system contractor should be aware of and comply with the
following installation and system operation requirements.
1. All installation activities shall be conducted in accordance with
Garfield County Building and Sanitation Department ISDS
regulations. If at any time during construction, subsurface site
conditions are encountered which differ from the design parameters
stated above, construction activities should stop and the design
engineer and Garfield County Building and Sanitation Department be
contacted to address any necessary design modifications.
2. Installation procedures including grade, location, setbacks, septic
tank size, and absorption field size should conform with the attached
figures. Construction activities and system components should not
encroach upon existing easements or utility corridors. A minimum of
6 feet of undisturbed soil should be maintained between individual
absorption elements and the septic tank and /or adjacent absorption
elements. Minimum setbacks for system components are:
• Minimum distance of sewage disposal system from dwelling: 1 O
feet
Berry I Zeis Residence 7
GEG Job No. 877
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• Minimum distance of septic tank from dwelling: 5 feet
• Minimum distance of leaching area to a stream or water course:
50 feet
• Minimum distance from septic tank and disposal field to
property lines: 10 feet
3. A minimum distance of 4 times the height of the nearest down slope
or a maximum of 25 feet should be maintained between any element
of the ISDS and the nearest down slope.
4. To help avoid surface flow infiltration and saturation of the new
absorption system, abandonment of flood irrigation within 50 feet of
any ISDS element is recommended.
5. All sewer lines and effluent distribution piping should be 4 inches in
diameter, have glued joints, and should be capped at termination of
discharge. Septic tank lines should be placed level. All lines
discharging sewage from the residence to the septic tank shall
maintain fall of between 1 /8 inch and Y. inch 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 feet from the septic tank
outlet must meet minimum standard ASTM-3034. Sewer lines under
driveways shall always meet minimum Schedule 40 PVC standards
and should be encased with corrugated metal pipe when covered
with less than 24 inches of soil.
6. At least 36 inches of soil cover should be maintained over all ISDS
components to mitigate freezing of septic effluent (excepting
maximum 8 inches cover over septic access ports).
7. The installer should not place fill in the open excavation until
inspected and approved by the design engineer. Additionally, the
final cover should not be placed on sewer lines, septic tank, or the
absorption area until the system has been inspected and approved
by the design engineer and the Garfield County Building and
Sanitation Department.
8. The installer should provide minimum 48 hour notice to the engineer
and the Garfield County Building and Sanitation Department for
inspection.
9. An infiltrator system consisting of interlocking segments should be
used. Our analysis used an infiltrator segment with a capacity of 122
Berry I Zeis Residence s
GEG Job No. 877
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gal (16.3 cubic feet), 72 inches by 14 inches by 36 inches. If a
different sizing is used it may affect the reduction allowed for the
absorption trench area. The design engineer and Garfield County
Building and Sanitation Department should be notified of any
changes in infiltrator used.
10. The system contractor shall be aware of the potential for construction
activities to reduce soil permeability's at the site through compaction,
smearing, and shearing. The following precautions and construction
procedures should be employed during installation to mitigate
disturbance to native soils:
a. Excavation should proceed only when the moisture content of
the soil is below the plastic limit.
b. Excavation and backfill equipment should work from the
surface where at all practical to avoid compaction of the soils
at depth.
c. 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.
d. Care should be taken in placing fill materials in the excavation
to avoid damaging the exposed soil surfaces.
OPERATION AND MAINTENANCE
Performance of the subject sewage disposal system will be dependent on
suitable operations and maintenance practices. The owner must understand and
accept responsibility for operations and maintenance of the system. Important
factors include:
Berry I Zeis Residence
GEG Job No. 877 •
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1.
2.
3.
4.
5.
The owner should 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 should plant and maintain grass or other shallow rooted
cover crop to prevent erosion and promote evapotranspiration over
the absorption area.
The owner should inspect and maintain the required mounding and
drainage away from the absorption area to prevent saturation from
precipitation and surface flows.
The owner should inspect and prevent intrusion of burrowing animals
and deep rooted plants into the absorption area.
The owner should conduct inspect septic tank once a year and clean
when necessary. Accumulated sludge should be removed from the
septic tank every 3 to 4 years to prevent clogging of the absorption
area.
6. The owner should not allow disposal of harmful substances into the
subject sewage disposal system.
LIMITATIONS
Satisfactory performance of an individual site disposal system is
dependent on several factors including subsurface characteristics, prudent
design, proper installation and operation and maintenance procedures. It is
important to understand there is an element of risk inherent with the performance
of each individual site disposal system. The design engineer can provide
Berry I Zeis Resldenee 10
GEG Job No. 877
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measures and recommendations to help mitigate risk. A comprehensive review
by the health department is also recommended to help mitigate risk. The risks
associated with overall system operation/performance must be understood and
accepted by the owner.
Recommendations contained in this report are based on limited
subsurface data. One series of test pits were observed and tested. Variations in
subsurface conditions not indicated by the test pits are possible. Subsurface
conditions may also change with time. The installation contractor should
observe actual subsurface conditions exposed at the time of excavation. If
differing conditions are suspected, installation should cease immediately. If
different soil or groundwater conditions are suspected, Garfield County Building
and Sanitation Department and our office should be contacted to review
conditions and make necessary design changes. The recommendations
contained in the report are also based on information supplied to GEG by the
client. Geotechnical Engineering Group does not accept responsibility for
variation in the assumed design parameters.
We believe this design was conducted in a manner consistent with that
level of care and skill ordinarily used by geotechnical engineers practicing in this
area at this time. No other warranty, express or implied, is made. If we can be
of further service in discussing the contents of this report or the analysis of the
Berry I Zeis Residence
GEG Job No. 877
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influence of the subsurface conditions on the design of the proposed
construction, please call.
Sincerely,
GEOTECHNICAL ENGINEERING GROUP, INC.
GGP:JPW:mk
(3 copies sent)
Berry I Zeis Residence
GEG Job No. 877 12
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Job No. 877
Individual Sewage Disposal
System Design
Springcreek and 300 Road
Garfield County, Colorado
Vicinity Map Fig. 1
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Proposed
Residence
Footprint
Property
Line
Note: This figure was developed
from a site plan provided by Jeff
Dickenson, Energy and
Sustainable Design's.
TP-2 •
• TP-1
Legend
P-3
Proposed Leach
Field Area
Property
Line
• Indicates location of
exploratory test pit.
Job No. 877 Location of Exploratory Test Pits Fig. 2
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Note: This plan does
not show buried utilities.
A utility locate should be
performed, prior to excavation.
Distribution
Box
"Infiltrator" High Capacity
Infiltrator sections
(122 gallon capacity per
unit)
750 gallon
septic tank minimum
with removable,
cleanable filter
at outlet
Absorption Area
Future Repair Area
(Do Not Build Here)
Absorption Area
Job No. 877
3'
6'
Location of Proposed
Absorption System
• b
N
II • ......
t Level Trenches
(Maximum Grade
Infiltrator Trench
per100')
Fig. 3
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(5 % typical) 36'
Native soil backfill
Trenches mounded r loosely placed
Inches over Infiltrator. ~ Existing ground surface
3.5'
..._____.. J_
3' typical I . .1.. 6' typical --J
Job No. 877
Roughen/ Scarify
soil surface
to help promote
absorption
Scale: 1 "= 5'
Absorption Field
Cross Section
"Infiltrator" High capacity
chamber system
34"x75'x16"
Fig. 4
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APPENDIX A
Soil Percolation Testing Results
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11
Geotechn/cal
·~nglneerlng
... Group, Inc.
SATURATION AND PREPARATION
DATE: 08/21/01
TIME AT START OF SATURATION: Unknown
PERCOLATION TEST
DATE: 08/22/01
WATER IN BORINGS AFTER SATURATION
0 YES ONO
PERCOLATION TEST RESULTS
QEPTH TQ WATE8
TIME AT TIME CHANGE
HOLE DEPTH START OF INTERVAL START OF END OF IN WATER
NUMBER (INCHES) INTERVAL (MINUTES) INTERVAL INTERVAL DEPTH
(INCHES) (INCHES) (INCHES)
TP-1 14 11 :31 10 0.5 1.5 1
11 :41 10 1.5 2.31 0.81
11 :51 10 2.31 2.68 0.37
12:01 10 2.68 3 0.32
12:11 10 3 3.5 0.5
12:21 10 3.5 4 0.5
Job No. 851
PERCOLATION
RATE
(MIN/INCH)
10
12
27
31
20
20
Fig. A-1
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11
Geotechnlcal
·~nglneerlng
la... Group, Inc.
SATURATION AND PREPARATION
DATE: 08/21/01
TIME AT START OF SATURATION: Unknown
PERCOLATION TEST
DA TE: 08/22/01
WATER IN BORINGS AFTER SATURATION
0 YES ONO
PERCOLATION TEST RESULTS
QEPTH TQ W,o>,TER
TIME AT TIME CHANGE PERCOLATION
HOLE DEPTH START OF INTERVAL START OF END OF IN WATER RATE
NUMBER (INCHES) INTERVAL (MINUTES) INTERVAL INTERVAL DEPTH (MIN/INCH)
(INCHES) (INCHES) (INCHES)
TP-2 13.5 11:34 10 4 5 1 10
11:44 10 5 5.25 0.25 40
11 :54 10 5.25 6 0.75 13
12:04 10 6 6.5 0.5 20
12:14 10 6.5 7 0.5 20
12:24 10 7 7.5 0.5 20
Job No. 851 Fig. A-2
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11
Geotechnlcal
atii~nglneerlng I-.. Group, Inc.
SATURATION AND PREPARATION
DATE: 08/21/01
TIME AT START OF SATURATION: Unknown
PERCOLATION TEST
DATE: 08/22/01
WATER IN BORINGS AFTER SATURATION
0 YES ONO
PERCOLATION TEST RESULTS
!;!EPTH TQ WATER
TIME AT TIME CHANGE PERCOLATION
HOLE DEPTH START OF INTERVAL START OF END OF IN WATER RATE
NUMBER (INCHES) INTERVAL (MINUTES) INTERVAL INTERVAL DEPTH (MIN/INCH)
(INCHES) (INCHES) (INCHES)
TP-3 3 11:37 10 3 3.5 0.5 20
11:47 10 3.5 4.25 0.75 13
11 :57 10 4.25 4.5 0.25 40
12:07 10 4.5 5 0.5 20
12:17 10 5 5.5 0.5 20
12:27 10 5.5 6 0.5 20
Job No. 851 Fig. A·3