HomeMy WebLinkAbout6054 Bellyache Rd - 210704101001INDIVIDUAL SEWAGE DISPOSAL SYSTEM PERMIT
EAGLE COUNTY DEPARTMENT OF ENVIRONMENTAL HEALTH
P.O. Box 179 - 550 Broadway • Eagle, Colorado 81631
Telephone: 328-7311 or 949-5257 or 927-3823
YELLOW COPY OF PERMIT MUST BE POSTED AT INSTALLATION SITE. PERMIT NO. 10.6'0
Please call for final inspection before covering any portion of installed system.
OWNER: John McNally PHONE: 447-2408
MAILING ADDRESS: 275 Timber Lane, Boulder Co 80302
AGENT: PHONE:
SYSTEM LOCATION: Lot 2 Bellyache II, 6054 Bellyache Rd.
LICENSED INSTALLER: Hutchins Excavating LICENSE NO. 34-91
DESIGN ENGINEER OF SYSTEM: Mound system per engineer design
INSTALLATION IS HEREBY GRANTED FOR THE FOLLOWING:
GALLON SEPTIC TANK OR 1000 GALLON AERATED TREATMENT UNIT.
DISPERSAL AREA REQUIREMENTS:
SQUARE FEET OF SEEPAGE BED 563 SQUARE FEET OF TRENCH BOTTOM.
SPECIAL REQUIREMENTS:
COMMENTS: This house is currently being huilt as a 2 bedream Th€ TSOS—is s}ged fer
a 3 bedrooms with the intention of adding on a 3rd bedroom at a later date.
ENVIRONMENTAL HEALTH OFFICER: DATE: ?-,2 ` - V
CONDITIONS:
1. ALL INSTALLATIONS MUST COMPLY WITH ALL REQUIREMENTS OF THE EAGLE COUNTY INDIVIDUAL SEWAGE DISPOSAL SYSTEM
REGULATIONS, ADOPTED PURSUANT TO AUTHORITY GRANTED IN 25.10-104, C.R.S. 1973, AS AMENDED.
2. THIS PERMIT IS VALID ONLY FOR CONNECTION TO STRUCTURES WHICH HAVE FULLY COMPLIED WITH COUNTY ZONING AND
BUILDING REQUIREMENTS. CONNECTION TO OR USE WITH ANY DWELLING OR STRUCTURE NOT APPROVED BY THE ZONING AND
BUILDING DEPARTMENTS SHALL AUTOMATICALLY BE A VIOLATION OF A REQUIREMENT OF THE PERMIT AND CAUSE FOR BOTH
LEGAL ACTION AND REVOCATION OF THE PERMIT.
3. SECTION III, 3.21 REQUIRES ANY PERSON WHO CONSTRUCTS, ALTERS OR INSTALLS AN INDIVIDUAL SEWAGE DISPOSAL SYSTEM
TO BE LICENSED ACCORDING TO THE REGULATIONS.
FINAL APPROVAL OF SYSTEM: (TO BE COMPLETED BY INSPECTOR):
NO SYSTEM SHALL BE DEEMED TO BE IN COMLIANCE WITH THE EAGLE COUNTY INDIVIDUAL SEWAGE DISPOSAL SYSTEM REGULATIONS UNTIL THE SYSTEM IS APPROVED
PRIOR TO COVERING ANY PORTION OF THE SYSTEM. INSTALLED ABSORPTION OR DISPERSAL AREA: SQUARE FEET. 67,04►G�_/
syslee-l" P��H1CdY 07e_ )04
INSTALLED SEPTIC TANK: D� GALLONS DEGREES FEET
SEPTIC TANK CLEANOUT TO WITHIN 8" OF FINAL GRADE, OR: \
PROPER MATERIALSAND ASSEMBLY v YES NO
COMPLIANCE WITH COUNTY/STATE REGULATION REQUIREMENTS: YES NO
ANY ITEM CHECKED NO REQUIRES CORRECTION BEFOR FINAL APPROVAL OF SYSTEM IS MADE. ARRANGE A�R�E�-1. 'SPE/C/LION WHEN WORK IS COMPLETED.
COMMENTS: Gee. �eCrsm co[It.n71,",. , /%%S�G�KO QS IifL�S/�ffJCU IDe, 3 /PiI4 A
ENVIRONMENTAL HEALTH OFFICER: DATE: / rP/ e
ENVIRONMENTAL HEALTH OFFICER: DATE:
(RE -INSPECTION IF NECESSARY)
RETAIN WITH RECEIPT RECORDS PERMIT
APPLICANT/AGENT:
OWNER:
AMOUNT PAID: RECEIPT #: CHECK #: CASHIER:
ISDS Permit # ,e�) & 0-
7-
Building Permit #
APPLICATION FOR INDIVIDUAL SEWAGE DISPOSAL SYSTEM PERMIT
ENVIRONMENTAL HEALTH OFFICE- EAGLE COUNTY
P.O. BOX 179
EAGLE, CO 81631
328-8730/927-3823(Basalt)
PERMIT APPLICATION FEE $150.00 PERCOLATION TEST FEE $125.00
PROPERTY OWNER:
MAILING ADDRESS: Z7� - mPEz ( 4}�j K.h�� ftZPHONE: 414 7-;a4o�3
APPLICANT/CONTACT PERSON: �i�� C� PHONE: 3 �'
LICENSED SYSTEMS CONTRACTOR:
ADDRESS:
****x***��rr�xxx,�x�xxxaxrercr��c�c�rr�r*t****rrrrrrr
PERMIT APPLICATION IS FOR: 1>4 NEW INSTALLATION
LOCATION OF PROPOSED INDIVIDUAL SEWAGE DISPOSAL
Legal Description: JAM- z &14�ti4
Parcel Number: Z167-oL1 / _.bl -on /
Physical Address: 1Zof(_- n �a
BUILDING TYPE: - -- (Check
j Residential /
{ ) Residential /
( ) Commercial /
HOT TUB
WATER CONSERVATION PLAN:
TYPE OF WATER SUPPLY:
Give depth of all
PHONE:
( ) ALTERATION ( ) REPAIR
SYSTEM:
vis)0�
Lot size: -9
applicable category)
Single Family Number of Bedrooms
Multi -Family* Number of Bedrooms
Industrial* Type
Yes ( ). No
Yes ( ) No
Well ('4 -spring ( ) Surface (-)
Public ( ) Name of Supplier:
wells within 200 feet of system: .
*These systems require design by a Registered Professional Engineer
NOTE: SITE PLAN MUST BE ATTACHED TO APPLICATION
MAKE ALL REMITTANCEnPAYABLE TO: "EAGLE COUNTY TREASURER^
SIGNATURE: DATE:
AMOUNT - PAID :�� RECEIPT#(
CHECK #
TIME LOG
Travel Perc Final
p
DATE: - / 5
CASHIER:_
`-f
re Of re;
l5ge-
4J
-----------
OT 4,4y"'al
YA .15 �jv,!5e, K Curr4t
1,q
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Inter -Mountain
Engineering Ltd.
REVISED
PERCOLATION TEST RESULTS
DESIGN RECOMMENDATIONS FOR AN INDIVIDUAL SANITARY
MZE7
SEWAGE DISPOSAL SYSTEM
LOT 2, BELLYACHE RIDGE SUBDIVISION FILING NO. 2
PREPARED FOR
COBURN DEVELOPMENT, INC.
2104 BLUFF
BOULDER, CO 80304
PROJECT NO. 91200E
AUGUST 1991
Box No. 978 • Avon, Colorado 81620 • 949-5072 Denver 893-1531
1420 Vance Street • Lakewood, Colorado 80215 • Phone: 232-0158
SCOPE
1
This report presents the results of percolation tests and
provides design recommendations for an individual sanitary sewage
disposal system for Lot 2, Bellyache Ridge Subdivision, Filing No.
2 in Eagle County, Colorado.
SITE LOCATION AND DESCRIPTION
The site is located in unincorporated Eagle County, south of
Wolcott, Colorado. Th thirty five acre l 's partially wooded
and generally drains to the south. The slope in the vicinity of
the septic system is 12%. The distance from the septic system to
the nearest downhill property line is approximately 200 feet.
FIELD INVESTIGATION & SUBSURFACE CONDITIONS
The field investigation was performed as a part of a Soils and
Foundation Investigation for this lot. Two test pits were dug with
a conventional backhoe.
Less than 3 feet of topsoil was underlain by weathered, bedded
sandstone to the maximum depth explored of 6.5 feet. The bedrock
was hard and is anticipated to have little to no expansion
potential. The backhoe used to excavate the test pits was unable
to penetrate the bedrock past 5 to 6.5 feet.
Percolation tests were performed on three test holes located
in the vicinity of the proposed leach field. The holes were
�. excavated to a depth at approximately 30 inches.
2
PERCOLATION TEST RESULTS
Percolation test were performed in accordance with the
procedures outlined in the Eagle County Individual Sewage Disposal
System Regulations. Results of our test are as follows:
Test Hole Minutes/ 1" Drop
a 1 11
L 2 11
,3 9
Average time for a 1" drop: 10.3 minutes.
DISCUSSION
Eagle County requirements for Individual Sewage Disposal
Systems prohibit the use of conventional soils absorption systems
�`- when bedrock occurs within four feet of the bottom of the bed.
.typical leach field trench installations are 30 to 36 inches deep
which would violate these regulations. The percolation rate of
10.3 minutes per inch is suitable for absorption fields.
Several alternative systems were considered for the disposal
of the effluent. They included an elevated mound system, and an
evapotranspiration bed, both allowed by Eagle County regulations.
An evapotranspiration bed relies primarily on liquid
evaporation or transpiration by vegetation as a means of effluent
disposal. These systems are generally more effective in sunny
locations. The site is south facing, and would be suitable for an
evapotranspiration bed, but a recent position taken by the State
Water conservation Board regarding the concept of consumptive water
3
C�
use has caused the county to reject this type of system on this
site.
VI'he elevated mound system is therefore the system of choice
for this site. The system works by discharging the relatively
clear effluent from a conventional septic tank into a stone and
sand bed which is built up from the existing ground surface.
Elevating the bed provides enough clearance over the underlying
rock to provide adequate bacteriological treatment of the effluent.
The treated effluent gradually works its way downhill and in
dispersed by a combination of soil percolation and evaporation.
On this site there is ample distance from the proposed mound
downstream to the property line for the necessary biologic activity
to occur.
The client has specified this location for the mound. It is
suitable, but dictates to some degree the shape of the mound and
the elevation of the lowest portion of the proposed house which can
be sewered.
Mound systems need to be carefully built to preserve the
existing soil characteristics under the mound. Included in this
report are guidelines for construction of the system.
DESIGN CRITERIA
A single family residence is planned for this site. The house
will hav ree bedrooms, an automatic washer and a garbage
disposal. The system will be designed in accordance with the
procedures outlined in the Eagle county Regulations and as
4
supplemented by the 1980 EPA Design Manual "Onsite Wastewater
Treatment and Disposal Systems". The following criteria will be
used:
\Occupancy = 2 persons per bedroom
Average Flow = 75 gallons per person per day (GPCD)
which includes an Automatic Washer and a
Garbage Disposal.
Peak Flow = 130% of average flow
DESIGN CALCULATIONS
Average Flow:
Q= 2 persons x 3 bedrooms x 75 GPCD
IvQ = 450 gallons per day (GPD)
Peak Flow:
Qp = 450 GPD x 150%
�Qp = 675 GPD
Mound Design:
Absorption Bedf rea, Use 1:2 GPD/ftz (EPA Table 7-8)
675/1.2
Absorption Bed Dimensions:
From given site criteria and ground contour locate
bed 7' northerly of spot elevation No. 48, 50' in
length, and parallel to the ground contour.
This locates the mound approximately 50' south and
downhill from the house.
Then 563 _ 50 = 11.5, use 11.5' width x 50' length
Set the bed thickness at 0.8'
construct the absorption bed of 3/4" to 2,1/2" clean
rock over clean medium sand with the following
gradation: >25% 0.25 - 2.0 mm
<30-35% 0.05-0.25 mm
<5-10% 0.002-0.05 mm
Mound Dimensions:
From EPA Table 7-9 set the sand fill depth under the high edge
of the bed at 1.0 feet, the cap depth at the edge of the bed at 1.0
feet, and the cap
depth
at the center
of the bed at
1.5 feet.
Set
the finish grade
slope
around all
sides of the
mound at
3:1.
�-- 5
Utilizing an average existing ground slope under the mound of 12%
and following the EPA design procedure yields mound dimensions as
shown on the attached drawing with an overall length of 74 feet and
a width of 40 feet.
Pipe Sizing:
The appropriate sized dosing siphon will discharge at a rate
of 100 to 160 gpm. A 4" plastic pipe at 2% grade from the siphon
outlet to the mound will deliver this flow.
The absorption bed dimensions accommodate 6 laterals 23' long
fed from a central manifold connected to the 4" discharge pipe.
Each lateral then discharges 17 gpm to 25 gpm
From EPA Table 7-13 select 3/8" diameter holes discharging
1.66 gpm/hole at 1.0' of hydraulic head. At 24" spacing each
23' lateral will have it holes.
From EPA Figure 7-28 with 3/8" holes at 2' c-c and lateral
length of 23' the lateral diameter is 1 1/211.
From EPA Figure 7-29 with a central manifold length of 4' and
per lateral flow of 17 gpm to 25 gpm to manifold diameter is
311.
From table 4 (section 4.07.01 of the Eagle County Regulations)
a 1,000 gallon septic tank will be required for this system.
The specified dosing chamber will allow for periodic high rate
discharge to the drainage field instead of a slow trickle. This
will prolong the life of the field. Fluid Dynamics company model
423 automatic dosing siphon provides the required flow.
Peak Flow Doses Per Day = 675 _ 180 = 3.75
1po0 5 ".'11M ?
_ea5 tom
SEPTIC SYSTEMS RECOMMENDATIONS
6
Based on the proceeding calculations, it is recommended that
a 1,OOO gallon compartmented septic tank followed by a l� 8o crallon
dosing tank and siphon be installed. The effluent should be
disposed of in a 563 square foot elevated absorption bed. Details
of the proposed system are shown on the enclosed drawing. An
inspection of the system should be made by a representative of the
Eagle county Environmental Health Department prior to back filling.
The installation and material specifications must comply with the
Eagle County Individual Sewage Disposal system Regulations.
VA
CONSTRUCTION
a. Site Preparation
Good construction techniques are essential if the mound is to
function properly. The following techniques should be used.:
Step 1: Rope off the site to prevent damage to the area during
other construction activity on the lot. Vehicular
traffic over the area should be prohibited to avoid
soil compaction.
Step 2: Stake out the mound perimeter and bed in the proper
orientation. Reference stakes set some distance from
the mound perimeter are also suggested in case the corner
stakes are disturbed.
Step 3:
Cut and remove any excessive vegetation. Trees should
be cut at ground surface and the stumps left in place.
Step 4:
Measure the average ground elevation along the upslope
edge of the bed to confirm the bottom elevation bed.
Contact the Engineer if there are discrepancies.
Step 5:
Install the delivery pipe from the dosing chamber to
the mound. Lay the pipe below the frost line. Back
fill and compact the soil around the pipe. Place
soil over the pipe in the vicinity of the mound as
necessary for frost protection.
Step 6:
Plow the area within the mound perimeter. Use a two
bottom or larger moldboard plow, plowing 7 to 8 in.
deep parallel to the contour. Single bottom plows should
not be used, as the trace wheel runs in every furrow,
compacting the soil. Each furrow should be thrown
upslope. A chisel plow may be used in place of a
moldboard plow. Roughening the surface with backhoe
teeth may be satisfactory, especially in wooded sites
with stumps. Rotatilling is not recommended because of
the damage it does to the soil structure.
Plowing should not be done when the soil is too wet.
Smearing and compaction of the soil will occur. If a
sample of the soil taken from the plow depth forms a
wire when rolled between the palms, the soil is too
wet. If it crumbles, plowing may proceed.
r
8
b. Fill Placement
Step 1: Place the fill material on the upslope edges of the
plowed area. Keep trucks off the plowed area.
Minimize traffic on the downslope side.
Step 2: Move the sand fill material into place using a small
track type tractor with a blade. Always keep a
minimum of 6 inches of material beneath the tracks of
the tractor to minimize compaction of the natural soil.
The fill material should be worked in this manner until
the height of the fill reaches the elevation of the
top of the absorption bed.
Step 3: With the blade of the tractor, form the absorption bed.
Hand level the bottom of the bed, checking it for the
proper elevation. Shape the sides to the desired slope.
C. Distribution Network Placement
Step 1: Carefully place the coarse aggregate in the bed. Do
not create ruts in the bottom of the bed. Level the
aggregate to a minimum depth of 6 inches.
Step 2: Assemble the distribution network on the aggregate.
The laterals should be laid level.
Step 3: Place additional aggregate to a depth of at least
2 inches over the crown of the pipe.
Step 4: Place a suitable backfill barrier over the aggregate.
d. Covering
Step 1: Place a finer textured soil material such as clay or
silt loam over the top of the bed to a minimum depth of
6 inches. Straw may be placed over this layer to the
bottom of the topsoil.
Step 2: Place 6 inches of good quality topsoil over the entire
mound surface.
Step 3: Plant grass over the entire mound using grasses adapted
to the area. Shrubs can be planted around the base and
up the sideslopes. Shrubs should be somewhat moisture
tolerant since the downslope perimeter may become moist
during early spring and late fall. Plantings on top of
the mound should be drought tolerant, as the upper
portion of the mound can become dry during the summer.
9
CONCLUSIONS
This report has been prepared for the exclusive use of Coburn
Development, Inc., for the specific application to the proposed
single family home on Lot 2, Bellyache Ridge Subdivision Filing No.
2, Eagle County, Colorado.
The findings and recommendations of this report have been
obtained in accordance with accepted professional engineering
practices. here is no other warranty either expressed or implied.
call.
l
If we can be of further assistance, please do not hesitate to
Sincerely,
I -MOUNTAIN ENGINEERING, LTD.
Duane Fehringer, P.E. & P.L.S.
SURVEY SURT PO/NT
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EXIST. 64'041"0 .�!/N. FLOOR
ELEV. = 74.0
INLET ELEV.
SECT/ON TI-/ROUC71-/ SYSTEM
S/ANON OUTLET---=-72.0
ELEi! = G9.tif
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CENTRAL MANIFOLD DISTRIBUTION NETWOR
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Lateral,-, _
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Cross
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LOT 2, BELLYA.GHE IL
_7.11. 91 9 1200Ir
DETAILED SCHEMATIC OF ' MOUND SYSTEM
Layer of Straw
or Marsh Hay
Sandy Lorain Soil
• .. •. .-I.. -+• � if � " i� • •k.:
=� Clean Rock
Sand Fill '� 4
.• .,•,iyl%"cn.a l.tlaa
Slope �..::.
11/2" Perforated
.Laterals
Diversion for
ace Water
��4.L.� `.r wt •:L v - 4 " PVC
FROM
SIPHON
6" Topsoil
.,�,v�+1`s7V'yis",.Y.+�Yi _ rL-r r}+�-"'•��`ct�!`Sr�:=:N't•:=r
Sod Layer .:
• "[� �.-;-_'''� = 4->''_%:- Broken Up
�•i_—.ate 1 � r►�-�-`�i1 � •f-��.' -r^� � � . �i 'd •~
Straw or Perforated Clay Fill or
Medium Sand Fill Pipe Topsoil
:v vriii
``yy//�tenl � !.y
_�� Y/fir`- • • • oil
— — - - —
ubs i I Plowed Surface 3/4-21/2 in. Rock slope
Cross Section
LOT 2, BELLYACI-IF_ ]_
7•II.91 91200E
CL.05ES7 PRcQE-4 TY LIIJE-
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December 3, 1991
Coburn Development
Mr. Jimi Coburn
2104 Bluff St.
Boulder, CO 80304
Re: Last 3, Bellyache Ridge Subdivision Filing No. 2
Eagle county, Colorado
Project No. 91200E
Gentlemen;
On two occasions in October 1991 I observed the construction
status of a septic system under construction on the referenced
property. The system was being constructed as described in the
Inter-Mrunta.in Engineering report entitled 'Revised Percolation Test
Results, Design Recommendations for an Individual sanitary and
Sewage Disposal System, Lot 21 Bellyache Ridge subdivision Filing
No. 2, Prepared for Coburn Development, inc.
The system is a dosed mound system as described in the report.
My two site inspections were at the point where the earth beet
had been prepared for the fill sand (which was on -site) and at the
point where the perforated distribution laterals were in place on
the rock absorption bed and ready for building paper and earth
covering.
In both instances the construction was per the plan and
workmanlike.
In our opinion these two observations were dome at the most
appropriate moments during the construction, and we believe that
the installation is proper.
It is noted that grain size distribution which you provided to
us met the report specification for medium sand.
If you have any questions, please cal .
sin y,
Gray earson, P.E.
Box No. 978 . Avon, Colorado 81620 • 949-5072 Denver 893.1W1
1420 Vance Street • Lakewood, Colorado 50215 a Phone: 232-0158
1920 13th Street • " Suite B • Boulder, Colorado 80302 (303) 442-3351
JOB NAME,
o ,toe Na.
JOB LOCATION
BILL TO
DATE.STARTED DATE COMPLETED DATE BILLED
JOB COST SUMMARY
TOTAL SELLING PRICE
TOTAL MATERIAL
TOTAL LABOR
INSURANCE
SALES TAX
MISC. COSTS
TOTAL JOB COST
GROSS PROFIT
LESS OVERHEAD COSTS
% OF SELLING PRICE
NET PROFIT
JOB FOLDER Product 278 ®® NEW ENGLAND BUSINESS SERVICE, INC., GROTON, MA 01471 Printed in USA
JOBF�O,o
12/19/22, 2:31 PM Eagle County Government Mail - 47 chelsea
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ECHDA Closing Instructions for 47 Chelsea final.docx
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ECHDA Closing Instructions for 47 Chelsea final.docx
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