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GARFIELD COUNTY BUILDING AND SANITATION DEPARTMENT
108 Eighth Street, Suite 201
Glenwood Springs, Coloradof 81601
Phone (970) 945-8212
INDIVIDUAL SEWAGE DISPOSAL PERMIT
PROPERTY
T3?- ioQP
Permit 4 3 6 4
Assessor's Parcel No.
TMs does not constitute
a building or use permit.
Owner's Name NP4L, wko, A tete,' Present Address 60X V'334 -Eagle Phone 41 I -6050
System Location' ON ttVl..bwiq C tit -&w3
Legal Description of Assessor's Parcel No
_)JetQV� PUD}LI_W L&\�2�3G5- 02.u -v6 -04I
SYSTEM DESIGN
Septic Tank Capacity (gallon)
Percolation Rate (minutes/inch)
Required Absorption Area - See Attached
Special Setback Requirements:
Date
Other Z�ir���yr//�p/fiL,
Number of Bedrooms (or other)%r)6-a72-0 7
"121 -(A/ -
Inspector Inspector
FINAL SYSTEM INSPECTION AND APPROVAL (as installed) .g-te' a�� ��/,_ Z�Le'i�'
Call for Inspection (24 hours notice) Before Covering Installation �� �" �""� ���
System Installer
Septic Tank Capacity Jnr'../Ciiiiir ��� ePO o G
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
Date Inspector
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.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. who
installsindividualsewage disin a posal
knowing and material
variationperson
fromthe terms or speificatonscontained the application of permitcommits manner
I, PettyPettty Offense ($50.00 fine — 6
months in jail or both).
White - APPLICANT Yellow - DEPARTMENT
INDIVIDUAL SEWAGE DISPOSAL SYSTEM APPLICATION
OWNERZ27// /d /�_ t / I
ADDRESSe0 / 3 ? Zc3 4/ ea k'/6 3) PHONE?V V71 -6-°
CONTRACTOR Ne -y /, G/ (/ ll
ADDRESS 6560 f --/P 3 5 -in ter./ X57/i% OryPHONEIV. 01- 3542 3
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 61/4&l/e/00 j l9frhtAc ? Size of Loto . 9 2 cic d'€°.5
Legal Description or Address G Of T / Wes -that(' I;9.
r 9.
WASTES TYPE: 74 DWELLING/Oi0��Y ' Ptj&YQr( ) �RANSIENTT Ued
( ) COMMERCIAL OR INDUSTRIAL ( ) NON-DOMESTIC WASTES
( ) OTHER—DESCRIBE
BUILDING OR SERVICE TYPE:fries 1oA'1li iu / No 0 5 `e__
Number of Bedrooms
6
Number of Persons
(X) Garbage Grinder (A) Automatic Washer
SOURCE AND TYPE OF WATER SUPPLY: (.0 WELL
If supplied by Community Water, give name of supplier:
DISTANCE TO NEAREST COMMUNITY SEWER
(dishwasher
( ) SPRING ( ) STREAM OR CREEK
Of/ -a 5 74 /gem 1. It
SYSTEM: Till SGiii°�
Was an effort made to connect to the Community System? f/ -S
A site plan is required to be submitted that indicates the following 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 N/
Percent Ground Slope
2
TYPE OF INDIVIDUAL SEWAGE DISPOSAL SYSTEM PROPOSED:
( ) SEPTIC TANK ( ) AERATION PLANT ( ) VAULT
( ) VAULT PRIVY ( ) COMPOSTING TOILET ( ) RECYCLING, POTABLE USE
( ) PIT PRIVY ( ) INCINERATION TOILET ( ) RECYCLING, OTHER USE
( ) CHEMICAL TOILET(..) OTHER -DESCRIBE 'If/ e 1:-/L5 / tt tie ` ,OCA ) 5 12.--1
FINAL DISPOSAL BY:
ABSORPTION TRENCH, BED OR PIT ( ) EVAPOTRANSPIRATION
UNDERGROUND DISPERSAL ( ) SAND FILTER
ABOVE GROUND DISPERSAL ( ) WASTEWATER POND
OTHER -DESCRIBE <- ' g Pt/ — - —
WILL EFFLUENT BE DISCHARGED DIRECTLY INTO WATERS OF THE STATE? PI/ 0
PERCOLATION TEST RESULTS: (To be completed by Registered Professional Engineer, if the Engineer does the
Percolation Test) nl n,
Minutes a V per inch in hole No. 1 Minutes v per inch in hole No. 3
Minutes h 0 per inch in hole No. 2 Minutes per inch in hole No. _
Name, address and telephone of RPE who made soil absorption tests: RP ce,f)-9"eo J
5� 2G .N / 5 q //eit, U1ecx.4- Mfr; ' -5 S/ d q/6 n
Name, address
and/telephone)off RPE responsible for]de gncof the)
system:t{S! /JYV /j )� j/!)'"'¢'er)--L'
l Gi �'LG y ,✓%G4 -G/ J���Me?, 5j7?2 71-'74— N 36�rio-,.4 9�(i llJ �e'6g
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
evaluatin g 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.
Signed
Date
- - 7 —0 7
PLEASE DRAW AN ACCURATE MAP TO YOUR PROPERTY!!
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PERCOLATION TESTS
The successful operation of your septic system depends on the rate the soil in which your leach field will be installed
will accept water. THIS IS CRITICAL. The rate of absorption is called the percolation rate and it determines the
size of the leach field needed for a particular flow of sewage and in some cases even determines the feasibility of the
installation of a septic tank and leach field system. PERCOLATION TEST MUST BE DONE AT THE GROUND
DEPTH WHERE ABSORPTION WILL TAKE PLACE. STANDARD SEEPAGE BEDS (LEACH FIELDS) ARE.
INSTALLED THREE FEET DEEP, SO THE PERCOLATION HOLES ARE DUG FOUR FEET DEEP, AT LEAST
20 FEET APART, IN A TRIANGLE SHAPE. THE PERCOLATION TEST IS DONE IN TFIE BOTTOM ONE (1)
FOOT OF THE HOLE:
A posthole digger, auger or backhoe can be used to dig the percolation test holes. If a back hoe is used, dig the back
hoe hole three (3) feet deep, with a bite for steps, and put a test hole one (1) foot deep and 8 to 12 inches in diameter in
the bottom. Installation of absorption areas (i.e. drywells) deeper than three (3) feet require the permission of the
Environmental Health Depattruent.
Saturation with water will affect the percolation rate, and since the system will he expected to operate when the soil is
saturated with water, THE HOLES MUST BE FILLED WITH WATER AT LEAST EIGHT (8) HOURS BEFORE
THE TEST AND ALLOWED TO STAND. More water will be needed to perform the percolation test, so AT LEAST
FIVE (5) GALLONS OF WATER PER HOLE SHOULD BE ON HAND WHEN THE TEST 1S PERFORMED.
AN EIGHT (8) FOOT PROFILE HOLE IN THE LEACH FIELD AREA IS REQUIRED IN THE STATE OF
COLORADO TO DETERMINE THE PROXIMITY OF GROUND WATER AND BEDROCK. (One soil profile hole
shall be drilled or dug to provide observation of the soil profile of the area of the soil absorption system. The hole shall
be prepared at least eight (8) feet deep. The hole may be terminated when groundwater or bedrock is encountered. The
hole shall be prepared in such a way as to provide identification of the soil profile four (4) feet below the bottom of the
soil absorption system).
5
(FOR APPLICANT'S INFORMATION)
PERCOLATION TESTS FOR DRY WELLS (SEEPAGE PITS) ARE PERFORMED AT THE LEVEL OF THE
BOTTOM OF THE PIT (USUALLY 10 FEET).
ce4“pa C.eveL
/0'
If you call for a percolation test or inspection and for some reason are not ready when the time comes, please call us
before 3:30 p.m. at 945-8212 to cancel the appointment.
THANK YOU FOR YOUR COOPERATION.
6
RECOMMENDED MINIMUM REQUIREMENTS FOR
INDIVIDUAL SEWAGE DISPOSAL SYSTEMS
Before construction is started, the Inspector must be contacted for approval and detailed information concerning the
proposed disposal system. Higher standards than those which follow may be required in individual cases to assure
attainment of the objective. Those objectives are to locate, construct and maintain individual sewage disposal systems
in such a manner that existing or contemplated water supplies will not become contaminated and so that sewage will
not overflow the ground surface and result in a nuisance or health hazard.
1. LIQUID CAPACITY OF TANK (GALLONS)
(Provides for use of garbage grinder, automatic clothes washers and other water using household appliances).
Recommended Minimum
Number of Bedrooms Tank Capacity
2 or less 750 gallons
3 or less 1,000 gallons
4 1,250 gallons
For each additional bedroom, add 250 gallons
2. MINIMUM LEACHING AREA OF DISPOSAL FIELD ABSORPTION AREA REQUIREMENTS FOR
INDIVIDUAL RESIDENCES
Percolation Rate
(time required for
water to fall one
inch, in minutes)
* 1 or less
*2
*3
*4
*5
Required Absorption
Area, in sq. ft.
per bedroom
(b) standard trench
(c) seepage beds &
(d) seepage pits
Percolation Rate
(time required for
water to fall one
inch, in minutes)
10
15
30(e)..
45(e)..
60 (e),
(f)
*(See Below)
Required Absorption
Area, in sq. ft.
per bedroom
(b) standard trench
(c) seepage beds &
(d) seepage pits
228
279
395
483
558
`Percolation rates faster than five (5) minutes per inch or slower titan sixty (60) minutes per inch require
engineered system and/or Board of Health approval.
(a) It is desirable to provide sufficient land area for entire new absorption system if needed in future.
(b) In every case, sufficient land area should be provided for the number of bedrooms (minimum of 2) that can
reasonably be anticipated, including the unfinished space available for conversion as additional bedrooms.
7
Absorption area is figured as trench -bottom area and includes a statistical allowance for vertical sidewall area.
(c) Absorption area for seepage pits is figured as effective sidewall area beneath the inlet.
(d) Unsuitable for seepage pits if over thirty.
(e, 0 Unsuitable for absorption system if over sixty.
Dwelling on less than two acres, areas of high water tables, or areas with a percolation test rate faster than 1" in 5
minutes must have alternative sewage facilities, i.e., central collection, holding tanks, individual treatment, etc.
EXCEPTION: Absorption areas may be allowed with percolation rates faster than one (1) inch in five (5) minutes
provided the soil is a sandy texture and no water table problems are encountered.
I. Maximum length of drainage line: 100 linear feet
2. Minimum width of drainage trench: 18 inches
3. Minimum spacing between trenches or pipes: 6 feet
4. Maximum grade of drainage lines: As level as possible
5. Minimum depth rock under drain PVC: 6" under PVC, 2" over PVC
6. Minimum depth of cover over distribution lines: 12 inches
7. Maximum depth of cover over distribution lines: Variable
8. Minimum grade of house sewer: 1/8 to 1/4" per linear ft.
9. Minimum distance of sewage disposal system
from dwelling: 20 feet
10. Minimum distance of septic tank from dwelling: 5 feet
11. Minimum distance of leaching area to a well: 100 feet
12. Minimum distance of septic tank to a well: 50 feet
13. Minimum distance of leaching area to a stream
or water course: 50 feet
14. Minimum distance from septic tank and disposal
field to property lines: 10 feet for drywell
10 feet for leach field
15. Minimum sewer pipe and distribution pipe: 4 inch diameter
Septic construction should be of concrete, concrete block or of a material that will resist deterioration and which can be
made reasonable watertight.
Acceptable drain field pipe materials include plastic, terra cotta or concrete. If the house sewer line is longer than 10
feet between house and septic tank, a clean-out Y should be installed as near as practical to the house.
Septic tanks should be inspected once a year and cleaned when necessary. Cleaning is recommended when space
between the scum accumulation and sludge residue on the tank bottom is less than eighteen (18) inches.
The Department recommends pumping a septic tank once every four (4) years when a yearly inspection by the owner is
not practical.
ISDSFeb2006
8
HEPWORTH -PAWLAK GEOTECHNICAL
June 7, 2007
Heyl, LLC
Attn: Dave Hey]
6560 County Road 335
New Castle, Colorado 81647
Hepworth-Pawlak Geotechnical, Inc.
5020 County Road 154
Glenwood Springs, Colorado 81601
Phone: 970-945-7988
Fax: 970-945-8454
email: hpgeor+hpgeotech.com
Job No. 107 0129
Subject: Percolation Testing, Proposed Residence, Lot 41, Westbank Mesa,
Garfield County, Colorado
Dear Mr. Heyl:
As requested by you, Hepworth - Pawlak Geotechnical, Inc., performed percolation
testing at the subject site. The testing was done as a supplement to our agreement for
professional services to Heyl, LLC, dated March 8, 2007. We previously conducted a
subsoil study for design of foundations at the site and presented our findings in a report
dated March 26, 2007, Job No. 107 0129.
A profile pit and three percolation test holes were excavated on May 21, 2007 at the
locations shown on Figure 1. The subsoils exposed in the Profile Pit, below about one
foot of topsoil, consisted of sandy clay to 5 feet overlying sandy gravel and silt to the
bottom pit depth of 8 feet. Percolation test hole P 1 was dug into the sandy gravel and silt
subsoils and test holes P 2 and P 3 were dug in the sandy clay soils. The USDA soil
texture of the sandy clay subsoils classify as loam. No free water was observed in the pit
and the soils were slightly moist to moist. Percolation test holes were hand dug in the
bottom of shallow backhoe pits and soaked with water on May 21, 2007.
Percolation testing was conducted on May 22, 2007 by a representative of Hepworth -
Pawlak Geotechnical, Inc. The percolation test results are summarized on Table 1.
Based on the subsurface conditions encountered and the percolation test results, the tested
area should be suitable for an on-site wastewater treatment system. We recommend the
system be oversized due to the relatively slow percolation rates. 1t appears that the
system could be deepened to the gravel and silt soils to achieve a higher percolation rate.
Parker 303-841-7119 e Colorado Springs 719-633-5562 • Silverthorne 970-468-1989
Heyl, LLC
June 7, 2007
Page 2
A professional civil engineer or environmental health professional should design the
wastewater system.
If you have any questions or need further assistance, please call our office.
Sincerely,
HEPWORTH - PAWLAK GEOTECHNICAL, INC.
. ' Louis E. Eller
Reviewed by:
Steven L. Pawlak, P
LEE/ksw
attachments
Figure 1 — Location of Percolation Test Holes
Figure 2 — Gradation Test Results
Table 1 — Percolation Test Results
Job No. 1070129
Gtech
LOT 43
6220
6250
6260
6240/230
1—I \
\
I \
I \
I \
PIT1❑
/
/ / /
/
( L1] PIT /
/ rl
6250
I
\ 1 /
\ I /
I I P 3
/ P�iOFILEE
/ /�/JJIT P2
I /
I I
I I \SP1
I
LOT 41
I I
I I
I I
I I
I �
6240 6240 /
LEGEND: 6260
PROFILE PIT FOR CURRENT STUDY.
- PERCOLATION TEST HOLE FOR
CURRENT STUDY.
0 EXPLORATORY PIT FOR PREVIOUS STUDY.
6230
6220
6210
6210
HUEBINGER DRIVE
APPROXIMATE SCALE
1" = 100'
107 0129
GE3~C)tech
HEPWOHTH.PAWLAK GEOTECHNICAL
LOCATION OF PERCOLATION
TEST HOLES
Figure 1
HYDROMETER ANALYSIS
TIME READINGS
24 R. 7 HR
0 45 IN. 15 MIN. 60MINi9MIN.4 MIN. 1 MIN. #200
10
20
30
40
50
60
70
80
90
SIEVE ANALYSIS
U.S. STANDARD SERIES 1 CLEAR SQUARE OPENINGS
#100 #50 #30 #16 #8 #4 3/8" 3/4" 11/2" 3" 5"6" 8" 100
J
100
.001 .002 .005 .009 .019 .037 .074 .150 .300
CLAY
SILT
GRAVEL 0 %
t
1
I
1
.600 1.18 2.36 4.75 9.5 19.0 37.5 762 152 203
12.5
DIAMETER OF PARTICLES IN MILLIMETERS
SAND
I V. FINE 1 FINE r MEDIUM I COARSE JV. COARSE
SAND 46 %
LIQUID LIMIT 33 %
USDA SOIL TYPE: Loam
GRAVEL
SMALL 1 MEDIUM 1 LARGE
SILT 30%
CLAY 24 %
PLASTICITY INDEX 19 %
FROM:Profile Pit at 4 to 5 Feet
27
COBBLES
90
BO
70
60
50
40
30
20
10
0
• RCN •A `t
107 0129
Ggsteds,
Hepworth—PowIck Geotechnical
GRADATION TEST RESULTS
Figure 2
HEPWORTH-PAWLAK GEOTECHNICAL, INC.
TABLE 1
PERCOLATION TEST RESULTS
JOB NO. 107 0129
HOLE NO.
HOLE DEPTH
(INCHES)
LENGTH OF
INTERVAL
(MIN)
WATER
DEPTH AT
START OF
INTERVAL
(INCHES)
WATER
DEPTH AT
END OF
INTERVAL
(INCHES)
DROP IN
WATER
LEVEL
(INCHES)
AVERAGE
PERCOLATION
RATE
(MIN./INCH)
P 1
50
15
Water added
Water added
3
2
1
20
2
1
1
1
1/8
7/8
3 3/4
2 3/4
1
2 3/4
2
3/4
2
1 1/4
3/4
1 1/4
1/2
3/4
2 1/2
1 3/4
3/4
P 2
50
15
4 1/4
3 3/4
1/2
60
3 3/4
3 1/2
1/4
3 1/2
3 1/4
1/4
3 1/4
3
1/4
2 3/4
2 1/2
1/4
2 1/2
2 1/4
1/4
2 1/4
2
1/4
2
13/4
1/4
P 3
47
15
4
3 1/2
1/2
60
3 1/2
3
1/2
3
2 3/4
1/4
2 3/4
2 1/2
1/4
2 1/2
2 1/4
1/4
2 1/4
2
1/4
2
1 3/4
1/4
1 3/4
1 1/2
1/4
Note: Perco ation test holes were hand dug in the bottom of backhoe pits and soaked on May
21, 2007. Percolation tests were conducted on May 22, 2007. The average percolation
rates were based on the last three readings of each test.
10
L
0
5
I"
GRAPHIC SCALE
10
20 40
( INFEET )
1 inch = 10 ft.
INSTALL 2000 GAL SEPTIC TANK
INSTALL EFFLUENT FILTER. INSTAU. MINIUMUM
24" DIAMETER RISERS OVER SEPTIC TANK
ACCESS OPENINGS FOR ACCESS TO TANK
CHAMBERS. ALL RISERS TO HAVE UDS AT THE
SURFACE. TANK CONNECTIONS AND RISER TO BE
WATERTIGHT.
SORPTION/TREATMENT BEDS
USE 66 ELJEN IN DRAIN UNITS IN EDS. EACH
BED WITH 2 ROWS OF 11 IN DRAIN�` ITS PER
ROW. THE IN -DRAIN UNITS IN EACH BED SHALL
BE INSTALLED AT LEVEL GRADE OVER 12" OF
SELECT FILTER SAND FOR AN INITIAL TREATMENT
AREA OF 544 S.F. WITH A TOTAL BASAL
ABSORPTION SURFACE AREA OF 1026 S.F.
RECOMMEND THAT THE BOTTOM OF THE BEDS
CAVATED TO DEPTHS AT OR SLIGHTLY
E SANDY GRAVEL AND SILT.
4"DIA. PERFORATED DISTRIBUTION LA '`AL PIPE
INSTALLED AT THE TOP CENTER OF E
IN -DRAIN UNITS RUN THE FULL a TH OF THE
TRENCHES. ORIENT PERFORATIONS • OWNWARD
AT 5 AND 7 O'CLOCK. INSTALL INSPECTION
T RISERS WITH CAP AT TH SURFACE ON
D THE DISTRIBUTION ' PES.
_GARAGE FI NISH ED
FLOOR: 20.00
3UIILDING. FINISHED FLOG
UPPER LEVEL: 20.00
LeWER LEVEL: 10.00.
LAYOUT OF FIELD AND SOIL CONDII1ONS TO BE
APPROVED BY THE ENGINEER PRIOR TO
INSTALLATION OF COMPONENTS. MODIFICATIONS
TO THE DESIGN OF SYSTEM WILL BE DEPENDANT
ON ADDITIONAL GEO-TECHNICAL EVALUATIONS
AND ASSESMENT.
LOT 42
62
INSPECTION
71'00 -WAY
CLEANOUT
4" DISTRIBUTION
PROPOSED
WALE
INSPECTION PORT
PROPOSED GRADE
EXfST1NG GRADE
4" PERFORATED
DISTRIBUTION LATERALS
PLACE FILTER FABRIC DOWN
SIDES OF ECA VA TION PRIOR TO
PLACEMENT OF SAND.
DRAPE AND OVERLAPE FABRIC
OVER INSTALLED SAND,
iN-DRAINS AND OI5RIBUTION
PIPE PRIOR TO BACKFILL.
1
TWO WAY CLEAN OUT
EFFLUENT FILTER
OUTLET TEE
4"PERFORATED
PVC (TYP)
MIN
"-EFFLUENT DRAIN LINE
AT MINIMUM 2% SLOPE
SEPTIC TANK
EFFLUENT DISCHARGE LINE
AT MINIMUM 1% SLOPE
DISTRIBUTION BOX W/
RiSER AND LiD AT THE
SURFACE
DISTRIBUTION LINES
AT MiNIMUM 2X SLOPE
24"
FILTER FABRIC (TYP)
DO NOT BLOCK
HOLES IN PIPE
24"
MIN
6"
12" MINIMUM
7"
12"
MIN.
4.
PLACE FILTER FABRIC DOWN
SiDES OF ECAVATION PRIOR TO
PLACEMENT OF SAND.
DRAPE AND OVERLAPE FABRIC
OVER INSTALLED SAND,
IN -DRAINS AND DISRiBUTION
PiPE PRIOR TO BACKFILL.
INSTALLER SHALL INSTALL A 12" LAYER OF WASHED
MEDIUM TO COURSE CONCRETE SAND OR EQUIV.
SEE ELJEN IN -DRAIN DESIGN AND INSTALLATION MANUAL FOR DETAILS
TYPICAL CROSS SECTION
NOT TO SCALE
4" EFFLUENT LIN
FROM SEPTIC TANK
VEGATATI ON
TOPSOIL LAYER
MIN. 5"
AERATED SOIL ZONE
FILL LAYER 0
NATIVE TOPSOIL
FILTER FABRIC
PERFORATED PVC
DISTRIBUTION PIPE
IN -DRAIN UNIT
STRAPPING
CUSPATED PLASTIC CORE
DISTRIBUTION BOX LID
AT GROUND SURFACE
RISER SECTION
NVERT iN
SAND LAYER
CONC. SAND
NATIVE SOIL
" SOLID PVC GRAVITY
DISTRIBUTION PiPES (TYP.)
TO ABSORPTION LATERALS
DISTRIBUTION BOX DETAIL (TUF-TITE SI{EMATIC)
N.T.S.
10"
ar7ar7,,r1-4ryr)Jr Ili ,,r I.?Nil ,,,•,
CC -ir r--) r�J (,._. -_ Ci
r
G/r)CTC L
4„
7"
48'
12"
INSTALLATION NOTES
1. THE TREATMENT BED OR TRENCH SHALL BE
EXCAVATED TO LEVEL GRADE_
2. THE WIDTH OF THE EXCAVATION SHALL BE
6 FEET TO PROVIDE 6" OF SAND BACKFILL ON
EITHER SIDE OF THE IN -DRAIN UNITS.
INSTALL THE NON -WOVEN FILTER FABRIC
OVER THE DISTRIBUTION PIPE DOWN THE SIDES
OF THE IN -DRAIN UNITS.
3. BOTTOM OF THE BED OR TRENCH SHALL BE FREE
OF ORGANIC MATERIAL AND ROCKS OVER 6 INCHES
IN DIAMETER. THE BOTTOM AND SIDEWALLS OF
THE TRENCH SHALL BE SCARIFIED AND RAKED IF
SMEARING OCCURS.
4. THE IN -DRAIN UNITS SHALL BE INSTALLED
LEVEL END TO END WITH THE PAINTED STRIP
FACING UP.
5. INSTALL PERFORATED PIPE OVER THE TOP OF
THE IN -DRAIN UNITS ON CENTER AND SECURE
WITH ONE ELJEN CLAMP PER UNIT.
6. INSTALL FILTER FABRIC OVER PIPE AND TOP
OF IN -DRAINS AND DRAPE DOWN THE SIDES
OF THE IN -DRAIN UNITS. BACKFILL OVER THE
FABRIC WITH CLEAN EXCAVATED FILL MATERIAL
BACKFILL IN -DRAIN SYSTEM WITH SUITABLE
EXCAVATED FILL FREE OF ROCKS OVER 3
INCHES IN DIAMETER. AVOID EXCESSIVE
COMPACTION OF FILL. AVOID COMPACTION
DAMAGE TO SYSTEM WITH EXCAVATION EQUIPMENT
8. FINISH GRADE TO PREVENT SURFACE
PONDING. REVEGATATE WITH APPROPRIATE
GROUND COVER AND PROTECT FROM EROSION.
MAX.
7.
IN -DRAIN TREATMENT/ABSORPTION SYSTEM
N. T.5.
Design Calculations
The design flow is calculated as follows:
Single family 6 -bedroom population CD 2 person/bedroom = 12 persons.
From the State I. S. D. S. Regulations:
Max. Design flow (Qd) = 9 of people x (avg. flow) x 1.5 gal/person/day.
Gallons per day per person for the subject house = 75 gal/person/day
Design flow Oct = 1350 gpd
Septic Tank Design
V = Q*1.25 = 1350 gal/day * 1.25 days = 1688 gallons.
Use a 2000 gallon concrete, dual compartment septic tank.
Elgen in -Drain/ GeotextIle 5andfilterTreatment System Design
Area required far a sand filter treatment bed:
Treatment beds Treatment/Absorption Area Design
Average percolation rate of 46 minutes per inch.
Standard absorption area equation yields:
A (sf) _ (Qd *(t) i : where A = Area;
5 t = time in minutes per inch=46mp1
Qd = flow (gaf/day) = 540 gpd
A - = 1350 *(46) 4 x 1.5 = 1831 S.F.
5
Apply State approved sizing credit reduction of 5.4 SF equivalent absorption
area per L.F. for use of permanent water conserving fixtures.
A(credit reduction).- A / 5.4 = 1831 / 5.4 = 339 L.F. absorption area.
Each in -Drain unit is 4 -feet long by 2 -feet wide by 7 -inches deep and is
placed over a minimum 6-inche bed of sand 3 -feet wide.
Therefore the minimum absorptive basal area of at the sand soil interface is
339 L.F. x 3 = 1020 S.F.
The Number of In -Drain units for initial treatment of effluent is based on the
peak design flow rate applied over the 8 S.F. surface area per unit at an
application rate of 2.5 gallons per S.F. per day.
Number of !n -Drains = Qd / 2.5 GSFD / 8 S.F. = 1350 / 2.5 / 8 = 67.5 units.
66 in -Drain units for adequate treatment with the proposed additiona! depth
of sand up to 12 -inches and the use of water conserving fixtures.
Initial surface treatment area with 66 units is equal to 66 units x 8 S.F. = 528 S.F.
Use 65 Eljen In -Drain units in 3 beds with two rows each. in -Drain units to be installed
aver select sand 12" deep. placed in the bottom of the three bed excavations. The total
absorptive area is 1026 S.F. The area includes the horizontal and vertical sand soil
interface of the three 48' x 6' treatment/absorption beds. 854 S.F. horizontal area with
an additional 6 -inch depth of sand for a Natal perimeter sidewall area of 162 S.F.
equals a total basal area of 1026 S.F.
Sub Surface Conditions and Testing:
Percolation testing was performed by HP Geotechnical on May 22, 2007 The
average rate was reported to be 46 MPI. 46 MPI is used for design.
The soils below 1 foot of topsoil are composed of sandy clay to 5 feet overly sandy
gravel and silt. The percolation rates indicate increased infiltrative capacity with depth.
The single pass treatment/absorption system' proposed will allow treatment to occur at
deeper installations. We recommend that the bottom of the beds be excavated to
depths at or slightly below the sandy gravel and silt.
No free water was encountered or is expected to below the surface within 20 feet.
OWS SYSTEM NOTES
1. ALL MATERIALS AND INSTALLATION SHALL CONFORM TO STATE AND
TOWN INDIVIDUAL SEWAGE DISPOSAL SYSTEM (15D5) REGULATIONS.
2. IT 15 THE RESPONSIBILITY OF THE CONTRACTOR TO CONTACT ALL
UTILITY COMPANIES FOR FIELD LOCATIONS OF UTILITIES PRIOR TO
CONSTRUCTION AND EXCAVATION.
3. ALL SEWER LINES TO BE SDR -35 BEDDED IN CLASS 6, SDR -26 BEDDED IN
SCREENED NATIVE OR SCHEDULE 40 P.V.C. PiPE BEDDED IN SCREENED NATIVE
MATERIAL UNLESS NOTED OTHERWISE.
4. INSTALL A TWO-WAY CLEAN OUT ON THE SERVICE LINE FROM THE HOUSE.
5. THE CONTRACTOR SHALL ENSURE ALL SEWER LINES AND SEPTIC TANKS ARE
WATERTIGHT. ANY POTENTIAL PLUMBING LEAKS SHALL BE REPAIRED TO AVOiD
EXCESSIVE WATER ENTERING THE SEPTIC SYSTEM.
6. THE SEPTIC TANK SHALL BE INSTALLED LEVEL ON COMPACTED EARTH. INSTALL
WATERTIGHT RISERS AS NECESSARY TO BRING ALL REQUIRED ACCESS
POINTS TO THE FINISHED SURFACE GRADE.
7. A SANITARY BAFFLE TEE IS REQUIRED ON THE SEPTIC TANK INLET AND OUTLET.
INSTALL THE INLET AND OUTLET TEES PLUMB AND IN A POSITION TO ALLOW EASY
INSPECTION AND MAiNTAINANCE OF TANK FROM THE TANK RISERS.
5_ WE RECOMMEND THE INSTALLATION OF A 4" EFFLUENT FILTER CONTAINED fN THE
4" BAFFLE OUTLET TEE OF THE SEPTIC TANK. THE FILTER SHOULD BE INSPECTED
EVERY 5!X MONTHS. THE EFFLUENT FILTER SHALL BE MAINTAINED AND CLEANED
WHEN THE TANK 15 PERIODICALLY PUMPED OR AS NECCESSARY. INSTALL A
SUITABLE EXTENSION ON THE FILTER WITH A HANDLE TO BE WITHIN 6" BELOW THE
ACCESS LID.
9. THE TREATMENT/ABSORPTION FIELD MUST BE MARKED AND PROTECTED TO
PREVENT DAMAGE FROM VEHICULAR AND LIVESTOCK TRAFFIC.
10. THE ENTIRE TREATMENT FIELD SURFACE MUST BE RE -VEGETATED WITH SUITABLE
GROUND COVER.
11. THE TREATMENT FIELD SURFACE MUST BE CROWNED T4 DIVERT SURFACE DRAINAGE
AWAY FROM THE TRENCHES.
12.
13.
14.
THE DIMENSIONS SHOWN ON THE PLAN INDICATE MINIMUM AREA AND SEPARATION
DISTANCES FOR THE OWS COMPONENTS.
THE BEDS SHALL BE LEVEL WITH DISTRIBUTION PIPES INSTALLED FOR
EQUAL DISTRIBUTION.
THE BEDS SHALL BE OVER EXCAVATED TO ALLOW PLACEMENT OF A MINIMUM
12 -INCH SAND TREATMENT LAYER. THE BOTTOM SURFACE AND SIDEWALLS OF THE
BED TO BE SCARIFIED AND RAKED AS NECCESSARY PRIOR TO PLACEMENT OF THE
SAND ROCK.
15. THE TREATMENT BEDS SHALL BE CONSTRUCTED WITH THE iN-DRAINS UNITS
PLACED WiTH A MiNIMUM OF 12" OF CONCRETE SAND BELOW AND 6 -INCHES ALONG
THE SIDES OF THE UNITS. THE PERFORATED DISTRIBUTION PIPE, SAND AND THE
IN -DRAIN UNiTS SHALL BE ENVELOPED WITH FILTER FABRIC. TO THE BOTTOM OF
THE EXCAVATION.
16. THE MINIMUM COVER OVER THE TOP OF THE IN -DRAIN UNITS SHALL BE 10 INCHES
NOT TO EXCEED 46". THE TRENCH IN -DRAIN UNITS WILL BE BACKFILLED TO THE
SURFACE WiTH EXCAVATED MATERIAL VOID OF ROCKS. THE BACKFILL MATERIAL
SHALL NOT EXCEED 3" DIAMETER. A MiNIMUM 4" DEPTH OF TOPSOIL 15 TO BE
PLACED ABOVE THE BACKFILL TO THE FINISH SURFACE GRADE.
17. VERTICAL INSPECTION PORTS SHALL BE INSTALLED ON THE PERFORATED
DISTRIBUTION PIPE AT THE TERMINAL ENDS OF EACH TRENCH.
18.
19.
1.
ALL INSTALLATION OF IN --DRAIN UNITS SHALL BE IN CONFORMANCE WITH THE
MANUFACTURES INSTALLATION INSTRUCTIONS.
TIME ABSORPTION FIELD SHALL BE INSTALLED PER THE REQUIRED SETBACK
DISTANCES:
10 feet from any property line.
25 feet from any potable water supply line.
20 feet from any occupied dwelling.
100 feet from any well, spring or cistern.
25 feet from drainage swale or ditches
50 feet from any stream or water course.
DISTRIBUTION SYSTEM NOTES:
EFFLUENT FROM THE SEPTIC TANK WiLL DISCHARGE TO A DISTRIBUTION BOX.
THE DISTRIBUTION SYSTEM WILL BE INSTALLED TO ALLOW FOR EFFLUENT TO BE
EQUALLY DISTRIBUTED OR MANUALLY ROTATED TO THE ABSORPTION TRENCHES
WA INDIVIDUAL 4" DISTRIBUTION LINES CONNECTED TO THE HEAD OF EACH
1N -DRAIN TREATMENT/ABSORPTION TRENCH.
2. WE RECOMMEND THE iNSTALLATiON OF AN ORENCO SYSTEMS 4" EFFLUENT
FILTER CONTAINED IN THE TANK'S 4" OUTLET TEE. THE FILTER SHOULD BE
INSPECTED EVERY SiX MONTHS. MAINTENANCE SHALL INCLUDE CLEANING THE
FiLTER EVERY SIX MONTHS MINIMUM AND AFTER PERIODIC PUMPING OF THE
TANK.
3.
THE DISTRIBUTION SYSTEM SHALL DISTRIBUTE FLOW EVENLY TO EACH iN-DRAIN
ROW IN THE BED. THE MiNIMUM SLOPE OF THE DISCHARGE LiNE FROM THE
TANK TO THE DISTRIBUTION BOX SHALL SHALL BE INSTALLED AT A MiNIMUM 1%
SLOPE. THE INDIVIDUAL DISTRIBUTION LINES SHALL BE INSTALLED AT A MINIMUM
OF 2% SLOPE. ALL DISTRIBUTION PIPING, CONNECTIONS AND FITTINGS SHALL BE
WATERTIGHT AND INSTALLED TO INSURE EQUAL DISTRIBUTIONTHROUCH THE
SYSTEM.
GENERAL NOTES:
1.
THE OWS SYSTEM AS SHOWN ON THE PLAN AND THE DETAILS WERE
DESIGNED BY SOPRIS ENGINEERING. THE PROPOSED CONDITIONS
WAS PROVIDED 8Y THE OWNER.
NO. DATE
REVISION
BY
S oPRis E NGINEER1NG, LLC.
1 CIVIL CONSULTANTS 1
502 MAIN STREET, SUiTE A3
CARBONDALE, CO 81623
(970) 704-0311
27056.01 27056-S[TE-OWS.DWG 8-21-07 ,
LaTGA IyEELD, COUNTI�ESA
HEYL RESIDENCE
ON-SITE WASTEWATER SYSTEM
SITE PLAN AND SYSTEM DETAILS
DES. PER CK. YTN FILE NO.
DR. PER DATE 6--27-07 27056.01
SHEET 1
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