HomeMy WebLinkAbout340 Fox Run Dr - 239128407007INDIVIDUAL SEWAGE DISPOSAL SYSTEM PERMIT
EAGLE COUNTY ENVIRONMENTAL HEALTH DIVISION
P.O. Box 179 - 500 Broadway • Eagle, CO 81631
Telephone: (970) 328-8755
COPY OF PERMIT MUST BE POSTED AT INSTALLATION SITE. PERMIT NO. 2172-02 BP NO. 14114
OWNER: DONALD RUSSELL PHONE: 757-467-7000
MAILING ADDRESS: 4092 FOXWOOD DRIVE, VIRGINIA BEACH, VA 23462
APPLICANT: SAME PHONE:
SYSTEM LOCATION: 340 FOX RUN DRIVE, CARBONDALE, CO TAX PARCEL NO. 2391-284-07-007
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LICENSED INSTALLER: KC EQUIPMENT, INC., KENT GOTTEN LICENSE NO. 48-02 PHONE: 970-872-3320
DESIGN ENGINEER: SOPRIS ENGINEERING, PAUL RUTLEDGE PHONE NO. 970-704-0311
INSTALLATION HEREBY GRANTED FOR THE FOLLOWING: MINIMUM REQUIREMENTS FOR A 4 BEDROOM RESIDENCE
1250 GALLON SEPTIC TANK, 1674 SQUARE FEET OF ABSORPTION AREA CREDIT, VIA 54 INFILTRATOR UNITS, PER ENGINEER'S DESIGN.
SPECIAL INSTRUCTIONS: INSTALL AS PER ENGINEER'S DESIGN REVISIONS DATED 3/21/02, IN SERIAL DISTRIBUTION WITH A CLEANOUT BETWEEN
THE TANK AND THE HOUSE, AND INSPECTION PORTALS IN EACH TRENCH. CALL EAGLE COUNTY ENVIRONMENTAL HEALTH FOR A PROFILE HOLE
OBSERVATION PRIOR TO BEGINNING CONSTRUCTION OF THE LEACH FIELD TO VERIFY SOIL CONDITIONS. MAINTAIN ALL APPLICABLE SET BACK
REQUIREMENTS. RAKE ALL TRENCH SURFACES TO PREVENT THE SMEARING OF SOILS AND DO NOT INSTALL IN WET WEATHER. CALL EAGLE
COUNTY ENVIRONMENTAL HEALTH AND THE DESIGN ENGINEER FOR FINAL INSPECTION PRIOR TO BACK FILLING ANY PART OF THE IN-
STALLATION, OR WITH ANY QUESTIONS REGARDING THE INSTALLATION. THE BUILDING CERTIFICATE OF OCCUPANCY WILL NOT BE
ISSUED UNTIL THE SEPTIC SYSTEM HAS BEEN INSPECTED AND APPROVED.
ENVIRONMENTAL HEALTH APPROVALQ Z L/LL-., 0 l/.1r DATE: APRIL 2, 2002
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, 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 WILL RESULT IN BOTH LEGAL ACTION AND REVOCATION OF THE PERMIT.
3. CHAPTER IV, SECTION 4.03.29 REQUIRES ANY PERSON WHO CONSTRUCTS, ALTERS OR INSTALLS AN INDIVIDUAL SEWAGE DISPOSAL SYSTEM TO
BE LICENSED.
FINAL APPROVAL OF SYSTEM (TO BE COMPLETED BY INSPECTOR):
NO SYSTEM SHALL BE DEEMED TO BE IN COMPLIANCE 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: 1674 SQUARE FEET (VIA 54 INFILTRATOR UNITS PER DESIGN )
INSTALLED CONCRETE SEPTIC TANK: 1250 GALLONS IS LOCATED 68 DEGREES AND 60 FEET INCHES
FROM THE NORTH WEST CORNER OF THE HOUSE.
COMMENTS: THE FINAL INSPECTIONS WERE DONE BY LAURA FAWCETT OF FAGLF COUNTY ENS HEALTH ANT) THE
DESIGN ENGINEER ON MAY 17, 2002. THE ENGINEER'S FINAL CERTIFICATION AND AS—BUTLT DRAWN(' WERE
RECEIVED ON MAY 30, 2002. THE SYSTEM IS LARGE ENOUGH FOR A FOUR BEDROOM RESIDENCE
ANY ITEM NOT MEETING REQUIREMENTS WILL BE CORRECTED BEFORE FINAL APPROVAL OF SYSTEM IS MADE. ARRANGE A RE -INSPECTION WHEN WORK IS
COMPLETED.
ENVIRONMENTAL HEALTH APPROVAL �Ul� iii�,Y A/1� DATE: JUNE 7, 2002
_IHtI-`9-2OC12 11: 39A FR.0rj: EAGLE C:OUh1TY El11), HER 9 it_1.328.-8-T-_„ T0: 91 T-74675521 P: 1: 5
Incomplete Applications Will NOT Be Accepted
(Site Plan MUST be attached)
ISDS Permit # � I ! o�
Building Permit #
APPLICATION FOR INDIVIDUAL SEWAGE DISPOSAL SYSTEM PERMIT
ENVIRONMENTAL HEALTH OFFICE - EAGLE COUNTY
P. O. BOX 179
81631
7671 DatQ'3 pages ( 8-0349, E1 Jebel (970) 927-3823
Post -it- Fax No
001
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Co./Dept.
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Phone #
Phone #
Fax# 01-7O _ -70 ,Oz'
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FEE $350.00
SITE EVALUATION (PERCOLATION TEST,
L INSPECTION
k REINSPECTION IS NECESSARY, OR A
---_-z-rcr=wr,�rrcucrrvN 5=B NESIMT -OR CONSULTATION IS NEEDED
* REINSPECTION FEE $47.00, PRE -CONSTRUCTION SITE VISIT FEE $85.00
* MAKE ALL REMITTANCE PAYABLE TO: "EAGLE COUNTY TREASURER"
****************************************************************************
PROPERTY OWNER:
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MAILING ADDRESS : �Q ?Z f x
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23 792-PHONE:
APPLICANT/CONTACT PERSON:
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LICENSED SYSTEMS CONTRACTOR: _'D0a
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COMPANY/DBA: " _
ADDRESS: r',a
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PERMIT APPLICATION IS FOR:
NEW
INSTALLATION ( ) ALTERATION
( ) REPAIR
LOCATION OF PROPOSED INDIVIDUAL SEWAGE DISPOSAL
SYSTEM:
Legal Description: �O'�
90 ^-) W
1�Y�C bW S
o r) L 1 7
o) —7 7
Tax Parcel Number: Z�+-�� Lot Size:
Physical Address: 3 Ll0 ID J h/ '�[���fl---6WK)0&^) C�Milt (0 811
BUILDING TYPE: (Check applicable category)
(>q Residential/Single Family Number of Bedrooms
( ) Residential/Multi-Family* Number of Bedrooms
( ) Commercial/Industrial* Type
*These systems require design by a Registered Professional Engineer
TYPE OF WATER SUPPLY: (Check applicable category)
( Well ( ) Spring ( ) urf e
( Public Name of , _Su>�l 2e r : _ �X �iI hJ M 1
APPLICANT SIGNATURE:
Date:
***********************X***************�/***********************f*****/***_k
AMOUNT PAID: 3�` D RECEIPT ## : _ J 13 �l DATE: :;I -
CHECK
# : CASHIER:
DEPARTMENT OF
ENVIRONMENTAL HEALTH
(970) 328-8755
FAX (970) 328-8788
TDD: (970) 328-8797
TOLL FREE: 800-225-8136
www.eagle-county.com
EAGLE COUNTY, COLORADO
June 7, 2002
Donald Russell
4092 Foxwood Drive
Virginia Beach, VA 23462
Raymond P. Merry, REHS
Director
RE: Final of ISDS Permit #2172-02, Tax Parcel #2391-284-07-007. Property location:
340 Fox Run Drive, Carbondale, CO.
Dear Mr. Russell:
This letter is to inform you that the above referenced ISDS Permit has been inspected and finalized.
Enclosed is a copy to retain for your records. This permit does not indicate compliance with any
other Eagle County requirements. Also enclosed is a brochure regarding the care of your septic
system.
Be aware that later changes to your building may require appropriate alterations of your septic
system.
If you have any questions regarding this permit, please contact the Eagle County Environmental
Health Division at (970) 328-8755.
Sincerely, /
Janet Kohl
Eagle County Environmental Health Department
ENCL: Informational Brochure
Final ISDS Permit
cc: files
OLD COURTHOUSE BUILDING, 551 Broadway, P.O. Box 179, Eagle, Colorado 81631-0179
DEPARTMENT OF
ENVIRONMENTAL HEALTH
(970) 328-8755
FAX (970) 328-8788
TDD: (970) 328-8797
TOLL FREE: 800-225-8136
www.eagle-county.com
EAGLE COUNTY, COLORADO
Date: April 2, 2002
TO: Dorais Excavating
Raymond P. Merry, REHS
Director
FROM: Environmental Health Division
RE: Issuance of Individual Sewage Disposal System Permit No.2172-02. Tax Parcel
# 2391-284-07-007. Property Location: 340 Fox Run Drive, Carbondale, CO.,
Russell residence.
Enclosed is your ISDS Permit No. 2172-02 and a field copy of the engineer design stipulated on
the permit. It is valid for 120 days, or for the duration of your current building permit for this
property. The enclosed copy of the permit must be posted at the installation site. Any changes
in plans or specifications invalidates the permit unless otherwise approved. Please note any
special requirements that may have been added to the design by this department.
Systems designed by a Registered Professional Engineer must be certified by the Engineer
indicating that the system was installed as specified. Eagle County Environmental Health
must also view the installation prior to back filling: Please call well in advance for your
final inspection. Your TCO will not be issued until our office receives this certification
from the engineer, and views the installation.
Permit specifications are minimum requirements only, and should be brought to the property
owner's attention.
This permit does not indicate conformance with other Eagle County requirements. Please
notify this office if you have not been contracted to perform this installation.
If you have any questions, please feel free to contact the Environmental Health Division at 328-
8755.
cc: files
Sopris Engineering, Paul Rutledge
OLD COURTHOUSE BUILDING, 551 Broadway, P.O. Box 179, Eagle, Colorado 81631-0179
May 17, 2002
Donald Russell
Russell Residence
4092 Boxwood Drive
Virginia Beach, VA 23462
RE: AS -BUILT ISDS System - Russell Residence, Lot 7, Fox Run Meadows P.U.D.,
Eagle County Colorado
SE Job No. 21138.01 Permit No. 2172-02 BP No. 14114
Dear Mr. Russell:
Pursuant to Eagle County regulations, this letter and attached drawing provides documentation that the new ISDS
system recently installed is in compliance with the permitted design. Sopris Engineering has performed site visits to
inspect and document the as built conditions of the constructed ISDS system. The as -built size and relative location
of the new ISDS system components is delineated on the attached drawing. Also attached is the completed Eagle
County document "ISDS Final Inspection Completeness Form".
The absorption trench facility was constructed utilizing serial distribution. Each trench was installed level and is
complete with an inspection port. The double compartment, 1250-gallon concrete septic tank system has been
installed with a pre cast effluent baffle. A two-way clean out has been installed between the house location and the
tank. The total as -built trench absorption area is 838 sf, utilizing 54 chambers. The average depth of the trenches is
3.25 feet as delineated on the approved plan. The soil conditions were consistent with depth. The ISDS components
have been installed in accordance with Eagle County ISDS Regulations; the Sopris Engineering Report and the design
drawings dated March 15, 2002.
We have forwarded a copy of this letter with attachments to Eagle County Environmental Health Division. Please
retain this copy for your records and As -built documentation use.
Your new system requires limited maintenance based on use, however please be advised that the components should
be inspected bi-annually and the septic tank should be pumped every 2-3 years.
If you have any questions or need any additional
additional information,
'please call.
J i `CXell I
,LC
502 Main Street •
Suite A3 • Carbondale, CO 81623 •
(970) 704-0311
• Fax (970) 704-0313
SopRis
ENGINEERING•
LLC
civil consultants
May 17, 2002
Donald Russell
Russell Residence
4092 Boxwood Drive
Virginia Beach, VA 23462
RE: AS -BUILT ISDS System - Russell Residence, Lot 7, Fox Run Meadows P.U.D.,
Eagle County Colorado
SE Job No. 21138.01 Permit No. 2172-02 BP No. 14114
Dear Mr. Russell:
Pursuant to Eagle County regulations, this letter and attached drawing provides documentation that the new ISDS
system recently installed is in compliance with the permitted design. Sopris Engineering has performed site visits to
inspect and document the as built conditions of the constructed ISDS system. The as -built size and relative location
of the new ISDS system components is delineated on the attached drawing. Also attached is the completed Eagle
County document "ISDS Final Inspection Completeness Form".
The absorption trench facility was constructed utilizing serial distribution. Each trench was installed level and is
complete with an inspection port. The double compartment, 1250-gallon concrete septic tank system has been
installed with a pre cast effluent baffle. A two-way clean out has been installed between the house location and the
tank. The total as -built trench absorption area is 838 sf, utilizing 54 chambers. The average depth of the trenches is
3.25 feet as delineated on the approved plan. The soil conditions were consistent with depth. The ISDS components
have been installed in accordance with Eagle County ISDS Regulations; the Sopris Engineering Report and the design
drawings dated March 15, 2002.
We have forwarded a copy of this letter with attachments to Eagle County Environmental Health Division. Please
retain this copy for your records and As -built documentation use.
Your new system requires limited maintenance based on use, however please be advised that the components should
be inspected bi-annually and the septic tank should be pumped every 2-3 years.,
If you have any questions or need any additional information, please call.
.LC
502 Main Street •
Suite A3 • Carbondale, CO 81623 •
(970) 704-0311
• Fax (970) 704-0313
SopRis
ENGINEERING•
LLC
civil consultants
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March 15, 2002
Domald Russell
Russell Residence
4092 Boxwood Drive
Virginia Beach; VA 23462
u�GIC
RE Russell Residence — Proposed ISDS System, Lot 7, Fox Run Meadows P.U.D.,
Eagle County Colorado
SE Job No. 21138.01
Dear Aft. Fussell:
Pursuant to your request, attached herewith is a letter/report presenting our findings in regard to the
feasibility and design for an Individual Sewage Disposal-Systern (ISDS) at the above referenced Site. This
design is based on our evaluation of the site conditions with information provided by others for use in
supporting your application to Eagle County. Our recommendations are in accordance with Eagle County
and the State of Colorado ISDS Regialations. Eagle County must permit any proposed improvement to the
site. We have reviewed the information forwarded to xis, conducted a site visit, formulated an ISDS design
and created a site plan with construction details as part of our scope of work.
Conclusions:
Based on our findings we believe that the design and installation of an approved ISDS system is feasible in
accordance with the RcgWtations of Eagle County and the State of Colorado. F.
,, a rectlmrnend, that a new
1250 gallon. septic tank be installed that will discharge effluent to, p 837 square foot soil absorption trench
stern. The soil absorption system can be installed in natural soils and will be located within the
absorption field envelope down gradient of the proposed house, as delineated on the attached plan. The
system will meet all required setbacks and be installed within the general boupda.ries indicated on the plan.
Our design is outlined below and delineated on the attached site plan.
Site Location:
The subject site is located on Fox Run Drive, on Ut 7 in The Fox Run Meadows, P.U.D. approximately 3
miles North of State Highway 82 in Eagle County, Colorado. The site is situated in Section 28, T 7 S, R
87 W of the 6th P.M. The Site comprises approximately 1.2 acres. The site is bounded on the north, south
and west'by single family lots and on the east by common use areas.
Existing Site Conditions:
The site is located on uadeveloped, dry rangeland and irrigated agricultural land. The site has a gentle
slow (5%) toward the west-southwest to the existing road, The existing ground surface in the proposed
septic area is on ground with an approximate slope of 5 %. The site is covered with native grasses and
sagebrush. D oniestie water is supplied by an existing central water system. There are no wells within the
general vicinity of the site. A. xi'stfi% sari ation diteh'is` locate&near the western bo-Undary of the site and
is M. excess of ,1,00 feet away.,from the location of the proposed absorption trenches.
562 Main Street •
Suite A3 , Carbondale, GO 81623 •
(970) 704-0311+ Fax (970) 704-0313
S1kPR1RFKA1UFFR1Ufts
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11
Pw _!_!F
M -1e-200-2 fYON 1 i : 45Arl ICi: ERGLE CW4 T `r' ENV HEfE LTH PIZCF e t
P'roRoseld Site Conditions:
Donald Russell
SE Jolt No: 21138.01
March 15, 200Z
Page 2
It is our understanding that you intend to construct a 3400 S.E., 411Wdfa� home including a basement and
a garage The maximum number of rooms to be utilized as bedrooms is 4. Therefore the system is
designed to Dandle the flow from 4 bedrooms. The proposed improvements will include a new I DS
system with appropriate site grading. The new structure is to be generally located in the building envelope
shown on the plan,
Subsurface Conditions:
Attached herewith are the results of the subsurface investigation and percolati:43rr tests conducted on April
11, 2001 by Hepworth P'awlak Geotechnical., I-ac. The report is dated .April 12, 2001, Job Number 101286.
The subsoil encountered at the site consists of 1 rla feet of topsoil overlying sandy silty clay to the depth
explored in the profile pit of S feet. Groundwater was not encountered in the test profile pit.
Percolation testing utilized three test hales, which yielded varying absorption rates. The fastest measured
rate was-18 minutes per inch and the slowest measured rate was .60ILininutes per inch. The average
percolation rate i .36 minute per inch and is suitable for a conventional absoeptiozi sys tern.
Design Criteria
The absorption field is designed based on utilizing the suitable native, soil for treatment in trenches. Based
on the reported percolation rate and observations of the percolation holes and test pit we have designed a
system that will treat the calculated quantity of effluent with native soils utilizing the Long Term
Acceptance Rate (LTAR) for the native soils. The LIAR is based on the interpolation of absorption rates
corresponding to the ,average percolation rate. The wastewater application rates are from Table 7-2, EPA.
Design Manual, Onsite Wastewater Treatment and Di spascal Systems.
Proposed residence is a 4-bedroom house. The design flow is calculated as follows:
Residence unit - 4 bedrooms c@ 2 person /bedroom ±=! S person
From the Eagle County I. S. D. S. Revelation;
Max. Design flow (Qd) = of people x-1.5(avg, flow) gal/person/day.
Gallons per day for the subject house � 7 gal/personyday
Qd = 8*75 * 1.5 =9e0 " �:1/day v"
Se tie Tank Des' ne
Residence
Q = 8*75 * 1.5 =900
Whume (V) of tank = Design Flow * 1.25 (30 hour retention time)
V = 900 gol/day * 1.25 =1125
Use one 1250-gallon septic tank +./
MAP-1 A -PAP WIN 1 1 : 4F;AM Tfl t G (-nl [MTV PM1 J WP:nl TI--I ons -=- 7
Donald Russell
SE Job No. 21138.01
March 15, 2002
Pa
ge 3
Soil Absorption System Design:
Absorption area required for treatment utilizing native soils
A = Absorption Aga.
Lang Term Acceptance Rate method (LTAR):
LTAR loading rate for soil with percolation rate between
30 and 60 minlir3.ch = 0.57 gall5.F.Iday per interpolation: Percolation rates 30 — 60 = Q0 — 36 � �tL
x = LTAR Application rates (0.6-0.45) (0.6 — x )
Solve for x = 0.57 g/sfld
A=Q/1-TAR = 900/0.57 =1579 sq. ft. V 30 O
We recommend using a gravelless absorption trench system. The county allows up to a 50%4 adjustment in
absorption area if gravel -less leaching chambers are used in suitable soils. The equivalent Absorption area
per chamber unit is 31 S.F. utilizing a trench system.
Assume 31 square feet per charnber: 1574 sg1t. = 51. chambers Use 54 chambers ��j(d�y s „S 37
31 sq.ft/chamber(50%) 6;t c4�X
We recommend using a trench system containing 13 standard leaching chamber units composed of 5
trenches with a varying cumber of chambers in each trench. Assume Moot wide trenches with 6.25-foot
long chamber units. fimuant to Eagle County En-viromental Health rccommendations serial distribution
is recommended.
An-addidon&profi3e hole -will be excavated1or-visual• lnspectimb} -flu-,, Eagle, C mmly,,Envir4nmental
I3calth Specalistrr+tli'Enrier"prit►z i'�cca2txftbe illapo,t absrptioneld. This
i peetion is required to confirm previous sail evaluations and provide adjustments to the design if
cessary. Sufficient notice to Eagle County and the Engineer by the owner/contractor reeds to be made, in
cider to schedule the site visit.
An inspection port shall be installed from the top of the pre -molded cut out at the midpoint of the
beginning -and terminal end chambers in the trench. The vertical inspection ports shall be V' SDR 35 or
schedule 40 PVC pipes extending at least 24' above the surface and topped with a removable cap. This
will allow for checking the performance of the system over time.
Distribution:
shall be installed on the cutlet of the secondary chamber in the septic tank. The hilter
should be inspected every six months. Maintenance shall include cleauWg the filter every six months
(minimum) and after periodic pumping of the tank.
The distribution system shall distribute flow to the first serial chamber trench via a 47 distribution pipe
from the outlet of the septic tank. The outlet pipe from the first trench will run across the minimum 6'
separation distance to the adjacent trench chamber and connect to the inlet port in the second trench. The
flaw will sheet flow along the length to the trench and connect the same way to the succeeding trenches.
MCID- 1 C_CMrA:D Mi-h11 I I - ACnNi Tr7- C:nrI C T'fsi ihi-rV CA I UCCnl 7U Ouf:'C. A
Donald Russell
SE, Jab No. 21138.01
March 15� 2002
Page 4
Each trench will be constructed level. Successive trenches may be installed at a slightly lower elevation
than the preceding trench to accommodate drainage in the distribution pipes and surface grades. &ch
trenrslLLerntrrtetn e�ce'°d a vere`u"cafhf Af:
ISDS Overation and Maintenauce
The system shall be inspected on a regular basis and be properly maintained. The system and
responsibility for repair and maintertauce of the system will remain with the Lot Owner.
The onsite system shouldrequire minimal maintenance. Several. factors influencing the need or
maintenance include: actual wastewater flows versus design flows, the volume of krtchenldomestic waste
(excluding human waste and toilet paper), excessive household chemicals and other toxic liquids. The
tank, absorption field and effluent filter should be visually inspected bi-annually for debris, wear, damage,
leaks, or ether potential problems. In general, for a properly utilized System, septic tanks should be
pumped and inspected every 2 - 4 years. The effluent filters should be cleaned every six months artd at the
time of pumping. Absorption fields should be maintained with suitable cover and kept free of root
invasive plants. Positive surface drainage away from the absorption field should be maintained.
Coustru tion. and €ns fions
Prior to construction of the permitted system the engineer should be contacted by the contractor and owner
well in advance to provide adequate time to discuss the system components with the contractor, answer
questions, resolve any conflict issues and schedule inspection site visits based on construction progress.
County Regulations require that the Design Engineers of record perform site inspections of the permitted
system during construction and provide "As-l447 documentation of the installed system to the County
after construction is complete. The Regulations further require site inspections and approval by the County
Environmental. Health Department of the exposed components of the system, prior to backfixlling.
Therefomthe-Ceutnty-Environment-al-Health-Department,.should also_be:-contaeted-and,notified-of the
chnstruction.schedule.
General Notes-
1) All materials and installation shall conform to the .Eagle County Individual Sewage Disposal
Regulations.
2� All sewer lines and distribution lines lit the system shall be 4" Schedule 40 or SDR-35 PVC unless
J specified otherwise on the plans.
3) Ad&amtwe-wA ivice ne ff t th bolse.
4) The system shall be plumbed to distribute effluent to the trenches with serial distribution.
S) The contractor shall ensure that the concrete septic tank and sewer lines are watertight.
6) The trench area must be protected to prevent damage from vehicular or livstock traffic and must be
crowned to divert drainage runoff away from the trenches to minirrni7e surface infiltration.
7) The infiltration chambers shall be installed level in each trench. A sp to sh, aJlwbcwi rsrZ&hon the
twn:hdloifiom o the tlet ut �?al trench to prevent-s+eutfrna Fthe effluent. ;The
top.of-t-hb4ckfill over the chambers,,shal-1 be- coveFf d--With="filter-`fabric:'
MnO-4 Q-a��t Moll ihl 4 I - A efaMi TFI- Cnfi C f'fll 1KITV CK11 i UC:nl TU Cnf — C--
Donald Russell
SE Job No. 21138.01
March 15, 2002
Page 5
8) The trenches must have a minimum cover of 12 inches. A final cover of topsoil suitable for vegetation,
a minimum 4" deep, shall be placed to the finished surface grade.
9) The absorption trenches must be sodded or covered with vegetative ground cover.
Our design and recommendations are based upon data supplied to us by others. If subsurface or site
conditions are found to be different from those presented in this report, we should be notified to evaluate
the effect it may have on the proposed ISDS. If the County Environmental Health Department requests
changes or modifications to this design, we should be contacted to evaluate the effect on the ISDS.
If you have any question or need any additional information, please call.
Sincerely,
SOPRIS ENGMEERING, LL.
Paul E. Rutledge
Design. Engineer
Yancy Nichol, P.E.
Project Engineer
mQp-9 Pt-Pavip m fN 9 9 - L PQM Tfl- F[](-,1 P rni [MTV PWI J WP211 TW PGf-�F- f:1
on
4TYP
APPROXIMATE ELEVATIONS -
INLET --
INLET INVENT ELEV. -994.0
SOT OM TRENOFI ELEV. -99,3.0
LIMITS OF E.WC-`AVATON
AND SELECT BACKFILL
10'
A
USE 54 INFILTRATOR CHAMBERS IN S ROWS ►OAITH A
VARYING NUMBER OF CHAMBERS PER ROW. A TOTAL OF
837 560. FT. OF TRENCH 50TOM AREA SHALL BE
PROVIDED. LOCATION OF TRENCHES MUST MEET ALL
COUNTY SETBACK REQUIREMENM THE SYSTELI SHALL
BE PLUMBED FOR SFJAL DISTRIBU710N. THE CHAMBERS
IN EACH TRENCH SHALL BE INSTALLED AT LEVEL
GRADE. 714E BOTTOM ELEVATION OF EACH TRENCH MAY
VARY WITH RESPECT TO FINISHED SURFACE GRADES
AND TO INSURE ADEQUATE SERIAL OVERFLOW DRAINAGE.
THE DISTRIBUTION PIPE PIPE FROM THE OUTLET ON THE
PRECEDING SERIAL TRENCH TO THE INLET OF THE
SUCCEEDING IRIENCH SHALL BE SL.OM AT 1%--2X
ELEV. 99�.9'
O
OF
5'
AF
INI
BC
PER4
H OLES
e DIA. SOLIt
KEA0ER PIPE
APPROX. 2%
LAYOUT OF PROPOSED TRENCHES AND SOIL
CONDITIONS TO BE APPROVED BY THE
ENGINEERS PRIOR TO EXCAVATION.
MODIFICATIONS TO THE DESIGN OF SYS`V WIL
BE DEPENDANT ON ADDMON+IAL GEO-T'EOHNICA
EVALUATIONS PRIOR TO CONSTRUCTION. -
&APHIC SCALE
i p 96 w w
AN ADDI-110NAL PRIO
VISUAL INSPECTION
HEALTH SPECIALIST
EXCAVATION FOR n
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DESIGN IF NECESSAI
COUNTY AND HL EN
NEEDS TO BE *DE
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OIL
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RNIC,AL
L PROFILE HOLE WILL BE EXCAVATED FOR
'TION SY THE EAGLE COUNTY ICI -AR MENTAL
AUST AND THE ENGINEtil PRIOR TO
'OR THE INSTAL.A1014. OF THE ABSORPTION
NSPIECTION IS REQUIRED TO COPOfO4 PREVIOUS
IONSAND PROVIDE ADJUSTMENTS TO THE ,<
;EsSARY. SUMCIENT NOTICE TO EAQLE `
H IMINEER IgT THE OWNER/CONTRACTOR
iul DE IN ORDER TO SCHEDULE iriE SIT, ig-1.
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- EAGLE- -COUNTY-E-W. RRALTA
P.O. BOX 179
EAGLE, CO 81631
JOB
SHEET NO. OF
CALCULATED BY DATE
CHECKED BY DATE
Donald Russell
Russell Residence
4092 Boxwood Drive
Virginia Beach; VA 23462
March 15, 20021
MAR 2 5 2002
RE: Russell Residence — Proposed ISDS System, Lot 7, Fox Run Meadow p LE COUNTY
Eagle County Colorado CM ' I ry DEVELOPMEN17
SE Job No. 21138.01
Dear Mr. Russell:
Pursuant to your request, attached herewith is a letter/report presenting our findings in regard to the
feasibility and design for an Individual Sewage Disposal System (ISDS) at the above referenced Site. This
design is based on our evaluation of the site conditions with information provided by others for use in
supporting your application to Eagle County. Our recommendations are in accordance with Eagle County
and the State of Colorado ISDS Regulations. Eagle County must permit any proposed improvement to the
site. We have reviewed the information forwarded to us, conducted a site visit, formulated an ISDS design
and created a site plan with construction details as part of our scope of work.
Conclusions:
Based on our findings we believe that the design and installation of an approved ISDS system is feasible in
accordance with the Regulations of Eagle County and the State of Colorado. We recommend that a new
42-56O g-R1lie installed that will discharge effluent to an 837 square foot soil absorption trench
system. The soil absorption system can be installed in natural soils and will be located within the
absorption field envelope down gradient of the proposed house, as delineated on the'attached plan. The
system will meet all required setbacks and be installed within the general boundaries indicated on the plan.
Our design is outlined below and delineated on the attached site plan.
Site Location:
The subject site is located on Fox Run Drive, on Lot 7 in The Fox Run Meadows, P.U.D. approximately 3
miles North of State Highway 82 in Eagle County, Colorado. The site is situated in Section 28, T 7 S, R
87 W of the 6`h P.M. The Site comprises approximately 1.2 acres. The site is bounded on the north, south
and west by single family lots and on the east by common use areas.
Existing Site Conditions:
The site is located on undeveloped, dry rangeland and irrigated agricultural land. The site has a gentle
slope (5%) toward the west-southwest to the existing road. The existing ground surface in the proposed
septic area is on ground with an approximate slope of 5%. The site is covered with native grasses and
sagebrush. Domestic water is supplied by an existing central water system. There are no wells within the
general vicinity of the site. An exic5tfff,, Lion ditch is-,located..near .the,�westem boundary: of these and
is:_in excesseof 10.O,:feet�away-from the -location of-theTproposed�absorpt an"trenches.
502 Main Street •
Suite A3 • Carbondale, CO 81623 •
(970) 704-031 1 • Fax
(970) 704-0313
pRis
SoG
ENGINEERIN•
LLC
civil consultants
Proposed Site Conditions:
Donald Russell
SE Job No. 21138.01
March 15, 2002
Page 2
It is our understanding that you intend to construct a 3400 S.F., 4 bedroom, home including a basement and
a garage., The maximum number of rooms to be utilized as bedrooms is 4. Therefore the system is
designed to handle the flow from 4 bedrooms. The proposed improvements will include a new ISDS
system with appropriate site grading. The new structure is to be generally located in the building envelope
shown on the plan.
Subsurface Conditions:
Attached herewith are the results of the subsurface investigation and percolation tests conducted on April
111 2001 by Hepworth Pawlak Geotechnical, Inc. The report is dated April 12, 2001, Job Number 101286.
The subsoil encountered at the site consists of 11/2 feet of topsoil overlying sandy silty clay to the depth
explored in the profile pit of 8 feet. Groundwater was not encountered in the test profile pit.
Percolation testing utilized three test holes, which yielded varying absorption rates. The fastest measured
rate was 18 minutes per inch and the slowest measured rate was 60 minutes per inch. The. average
percolation rate is 36 minutes per inch and is suitable for a conventional absorption system.
Design Criteria
The absorption field is designed based on utilizing the suitable native soil for treatment in trenches. Based
on the reported percolation rate and observations of the percolation holes and test pit we have designed a
system that will treat the calculated quantity of effluent with native soils utilizing the Long Term
Acceptance Rate (LTAR) for the native soils. The LTAR is based on the interpolation of absorption rates
corresponding to the average percolation rate. The wastewater application rates are from Table 7-2, EPA
Design Manual, Onsite Wastewater Treatment and Disposal Systems.
Proposed residence is a 4-bedroom house. The design flow is calculated as follows:
Residence unit - 4 bedrooms @ 2 person /bedroom = 8 person
From the Eagle County I. S. D. S. Regulation;.
Max. Design flow (Qd) _ # of people x 1.5(avg. flow) gal/person/day.
Gallons per day for the subject house = 75 gal/person/day
Qd = 8*75*1.5 =900 a
Septic Tank Design:
Residence
Q = 8*752k1.5 =900
Volume (V) of tank = Design Flow * 1.25 (30 hour retention time)
V = 900 gal/day * 1.25 = 1125
Use one 1250-gallon septic tank
Soil Absorption System Desian:
Absorption area required for treatment utilizing native soils:
A = Absorption Area
Donald Russell
SE Job No. 21138.01
March 15, 2002
Page 3
Long Term Acceptance Rate method (LTAR):
LTAR loading rate for soil with percolation rate between
30 and 60 min/inch = 0.57 gal/S.F./day per interpolation: Percolation rates 30 — 60
x = LTAR Application rates (0 6-0 45)
A=Q/LTAR = 900/0.57 = 1579 sq. ft.I/
Solve for x = 0.57 g/sf/d
= 30 — 36
(0.6 — x )
We recommend using a gravelless absorption trench.system. The county allows up to a 50% adjustment in
absorption area if gravelless leaching chambers are used in suitable soils. The equivalent Absorption area
per chamber unit is 31 S.F. utilizing a trench system.
Assume 31 square feet per chamber: 1579 sq.ft. = 51 chamber =chamb�r�
31 sq.ft/chamber(50%)
We recommend using a trench system containing 13 standard leaching chamber units composed of 5
trenches with a varying number of chambers in each trench. Assume 3-foot wide trenches with 6.25-foot
long chamber units. Pursuant to Eagle County Environmental Health recommendations serial distribution
is recommended.
An additional profile hole will be excavated for visual inspection by the Eagle County Environmental
Health Specialist and the Engineer prior to excavation for the installation of the absorption field. This
inspection is required to confirm previous soil evaluations and provide adjustments to the design if
necessary. Sufficient notice to Eagle County and the Engineer by the owner/contractor needs to be made in
order to schedule the site visit.
An inspection port shall be installed from the top of the pre -molded cut out at the midpoint of the
beginning and terminal end chambers in the trench. The vertical inspection ports shall be 4" SDR 35 or
schedule 40 PVC pipes extending at least 24" above the surface and topped with a removable cap. This
will allow for checking the performance of the system over time.
Distribution:
An effluent filter shall be installed on the outlet of the secondary chamber in the septic tank. 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.
The distribution_ system shall distribute flow to the first serial chamber trench via a 4" distribution pipe
from the outlet .of the septic tank. The outlet pipe from the first trench will run across the minimum 6'
separation distance to the adjacent trench chamber and connect to the inlet port in the second trench. The
flow will sheet flow along the length to the trench and connect the same way to the succeeding trenches.
Donald Russell
SE Job No. 21138.01
March 15, 2002
Page 4
Each trench will be constructed level. Successive trenches may be installed at a slightly lower elevation
than the preceding trench to accommodate drainage in the distribution pipes and surface grades. Each
trench shall be constructed not to exceed an average maximum depth of 4 feet.
ISDS Operation and Maintenance
The system shall be inspected on a regular basis and be properly maintained. The system and
responsibility for repair and maintenance of the system will remain with the Lot Owner.
The onsite system should require minimal maintenance. Several factors influencing the need for
maintenance include: actual wastewater flows versus design flows, the volume of kitchen/domestic waste
(excluding human waste and toilet paper), excessive household chemicals and other toxic liquids. The
tank, absorption field and effluent filter should be visually inspected bi-annually for debris, wear, damage,
leaks, or other potential problems. In general, for a properly utilized system, septic tanks should be
pumped and inspected every 2 - 4 years. The effluent filters should be cleaned every six months and at the
time of pumping. Absorption fields should be maintained with suitable cover and kept free of root
invasive plants. Positive surface drainage away from the absorption field should be maintained.
Construction and Inspections
Prior to construction of the permitted system the engineer should be contacted by the contractor and owner
well in advance to provide adequate time to discuss the system components with the contractor, answer
questions, resolve any conflict issues and schedule inspection site visits based on construction progress.
County Regulations require that the Design Engineers of record perform site inspections of the permitted
system during construction and provide "As -Built" documentation of the installed system to the County
after construction is complete. The Regulations further require site inspections and approval by the County
Environmental Health Department of the exposed components of the system prior to backfilling.
Therefore the County Environmental Health Department should also be contacted and notified of the
construction schedule.
General Notes-
1) All materials and installation shall conform to the Eagle County Individual Sewage Disposal
Regulations.
2) All sewer lines and distribution lines in the system shall be 4" Schedule 40 or SDR-35 PVC unless
specified otherwise on the plans.
3) Add a two-way clean out on the service line from the proposed house.
4) The system shall be plumbed to distribute effluent to the trenches with serial distribution.
5) The contractor shall ensure that the concrete septic tank and sewer lines are watertight.
6) The trench area must be protected to prevent damage from vehicular or livestock traffic and must be
crowned to divert drainage runoff away from the trenches to minimize surface infiltration.
7) The infiltration chambers shall be installed level in each trench. A splash plate shall be installed on the
trench bottom surface below the inlet in each serial trench to prevent scouring from the effluent. The
top of the backfill over the chambers shall be covered with filter fabric.
Donald Russell
SE Job No. 21138.01
March 15, 2002
Page 5
8) The trenches must have a minimum cover of 12 inches. A final cover of topsoil suitable for vegetation,
a minimum 4" deep, shall be placed to the finished surface grade.
9) The absorption trenches must be sodded or covered with vegetative ground cover.
Our design and recommendations are based upon data supplied to us by others. If subsurface or site
conditions are found to be different from those presented in this report, we should be notified to evaluate
the effect it may have on the proposed ISDS. If the County Environmental Health Department requests
changes or modifications to this design, we should be contacted to evaluate the effect on the ISDS.
If you have any question or need any additional information, please call.
Sincerely,
SOPRIS ENGINEERING, LLC
March 15, 2002
Donald Russell
Russell Residence
4092 Boxwood Drive
Virginia Beach; VA 23462
MAR 2 5 2002
RE: Russell Residence — Proposed ISDS System, Lot 7, Fox Run Meadows PEAbPECOUNTY
Eagle County Colorado COMMUNITY DEVELOPMENT
SE Job No. 21138.01
Dear Mr. Russell:
Pursuant to your request, attached herewith is a letter/report presenting our findings in regard to the
feasibility and design for an Individual Sewage Disposal System (ISDS) at the above referenced Site. This
design is based on our evaluation of the site conditions with information provided by others for use in
supporting your application to Eagle County. Our recommendations are in accordance with Eagle County
and the State of Colorado ISDS Regulations. Eagle County must permit any proposed improvement to the
site. We have reviewed the information forwarded to us, conducted a site visit, formulated an ISDS design
and created a site plan with construction details as part of our scope of work.
Conclusions:
Based on our findings we believe that the design and installation of an approved ISDS system is feasible in
accordance with the Regulations of Eagle County and the State of Colorado. We recommend that a new
1250 gallon septic tank be installed that will discharge effluent to an 837 square foot soil absorption trench
system. The soil absorption system can be installed in natural soils and will be located within the
absorption field envelope down gradient of the proposed house, as delineated on the attached plan. The
system will meet all required setbacks and be installed within the general boundaries indicated on the plan.
Our design is outlined below and delineated on the attached site plan.
Site Location:
The subject site is located on Fox Run Drive, on Lot 7 in The Fox Run Meadows, P.U.D. approximately 3
miles North of State Highway 82 in Eagle County, Colorado. The site is situated in Section 28, T 7 S, R
87 W of the 6`h P.M. The Site comprises approximately 1.2 acres. The site is bounded on the north, south
and west by single family lots and on the east by common use areas.
Existing Site Conditions:
The site is located on undeveloped, dry rangeland and irrigated agricultural land. The site has a gentle
slope (5%) toward the west-southwest to the existing road. The existing ground surface in the proposed
septic area is on ground with an approximate slope of 5%. The site is covered with native grasses and
sagebrush. Domestic water is supplied by an existing central water system. There are no wells within the
general vicinity of the site. An existing irrigation ditch is located near the western boundary of the site and
is in excess of 100 feet away from the location of the proposed absorption trenches.
502 Main Street •
Suite A3 • Carbondale, CO 81623 •
(970) 704-0311• Fax
(970) 704-0313
SopRisENGINEERING
•
LLC
civil consultants
t
Donald Russell
SE Job No. 21138.01
March 15, 2002
Page 2
Proposed Site Conditions:
It is our understanding that you intend to construct a 3400 S.F., 4 bedroom, home including a basement and
a garage. The maximum number of rooms to be utilized as bedrooms is 4. Therefore the system is
designed to handle the flow from 4 bedrooms. The proposed improvements will include a new ISDS
system with appropriate site grading. The new structure is to be generally located in the building envelope
shown on the plan.
Subsurface Conditions:
Attached herewith are the results of the subsurface investigation and percolation tests conducted on April
11, 2001 by Hepworth Pawlak Geotechnical, Inc. The report is dated April 12, 2001, Job Number 101286.
The subsoil encountered at the site consists of 11/a feet of topsoil overlying sandy silty clay to the depth
explored in the profile pit of 8 feet. Groundwater was not encountered in the test profile pit.
Percolation testing utilized three test holes, which yielded varying absorption rates. The fastest measured
rate was 18 minutes per inch and the slowest measured rate was 60 minutes per inch. The average
percolation rate is 36 minutes per inch and is suitable for a conventional absorption system.
Design Criteria
The absorption field is designed based on utilizing the suitable native soil for treatment in trenches. Based
on the reported percolation rate and observations of the percolation holes and test pit we have designed a
system that will treat the calculated quantity of effluent with native soils utilizing the Long Term
Acceptance Rate (LTAR) for the native soils. The LTAR is based on the interpolation of absorption rates
corresponding to the average percolation rate. The wastewater application rates are from Table 7-2, EPA
Design Manual, Onsite Wastewater Treatment and Disposal Systems.
Proposed residence is a 4-bedroom house. The design flow is calculated as follows:
Residence unit - 4 bedrooms @ 2 person /bedroom = 8 person
From the Eagle County I. S. D. S. Regulation;
Max. Design flow (Qd) _ # of people x 1.5(avg. flow) gal/person/day.
Gallons per day for the subject house = 75 gal/person/day
Qd = 8*75*1.5 =900 a
Septic Tank Design:
Residence
Q = 8*75*1.5 =900
Volume (V) of tank = Design Flow * 1.25 (30 hour retention time)
V = 900 gal/day * 1.25 =1125
Use one 1250-gallon septic tank
Donald Russell
SE Job No. 21138.01
March 15, 2002
Page 3
Soil Absorption System Design:
Absorption area required for treatment utilizing native soils:
A = Absorption Area
Long Term Acceptance Rate method (LTAR):
LTAR loading rate for soil with percolation rate between
30 and 60 min/inch = 0.57 gal/S.F./day per interpolation: Percolation rates 30 — 60 = 30 — 36
x = LTAR Application rates (0.6-0.45) (0.6 — x )
Solve for x = 0.57 g/sf/d
A=Q/LTAR = 900/0.57 =1579 sq. ft.
We recommend using a gravelless absorption trench system. The county allows up to a 50% adjustment in
absorption area if gravelless leaching chambers are used in suitable soils. The equivalent Absorption area
per chamber unit is 31 S.F. utilizing a trench system.
Assume 31 square feet per chamber: 1579 sq.ft. = 51 chambers Use 54 chambers
31 sq.ft/chamber(50%)
We recommend using a trench system containing 13 standard leaching chamber units composed of 5
trenches with a varying number of chambers in each trench. Assume 3-foot wide trenches with 6.25-foot
long chamber units. Pursuant to Eagle County Environmental Health recommendations serial distribution
is recommended.
An additional profile hole will be excavated for visual inspection by the Eagle County Environmental
Health Specialist and the Engineer prior to excavation for the installation of the absorption field. This
inspection is required to confirm previous soil evaluations and provide adjustments to the design if
necessary. Sufficient notice to Eagle County and the Engineer by the owner/contractor needs to be made in
order to schedule the site visit.
An inspection port shall be installed from the top of the pre -molded cut out at the midpoint of the
beginning and terminal end chambers in the trench. The vertical inspection ports shall be 4" SDR 35 or
schedule 40 PVC pipes extending at least 24" above the surface and topped with a removable cap. This
will allow for checking the performance of the system over time.
Distribution:
An effluent filter shall be installed on the outlet of the secondary chamber in the septic tank. 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.
The distribution system shall distribute flow to the first serial chamber trench via a 4" distribution pipe
from the outlet of the septic tank. The outlet pipe from the first trench will run across the minimum 6'
separation distance to the adjacent trench chamber and connect to the inlet port in the second trench. The
flow will sheet flow along the length to the trench and connect the same way to the succeeding trenches.
Donald Russell
SE Job No. 21138.01
March 15, 2002
Page 4
Each trench will be constructed level. Successive trenches may be installed at a slightly lower elevation
than the preceding trench to accommodate drainage in the distribution pipes and surface grades. Each
trench shall be constructed not to exceed an average maximum depth of 4 feet.
ISDS Operation and Maintenance
The system shall be inspected on a regular basis and be properly maintained. The system and
responsibility for repair and maintenance of the system will remain with the Lot Owner.
The onsite system should require minimal maintenance. Several factors influencing the need for
maintenance include: actual wastewater flows versus design flows, the volume of kitchen/domestic waste
(excluding human waste and toilet paper), excessive household chemicals and other toxic liquids. The
tank, absorption field and effluent filter should be visually inspected bi-annually for debris, wear, damage,
leaks, or other potential problems. In general, for a properly utilized system, septic tanks should be
pumped and inspected every 2 - 4 years. The effluent filters should be cleaned every six months and at the
time of pumping. Absorption fields should be maintained with suitable cover and kept free of root
invasive plants. Positive surface drainage away from the absorption field should be maintained.
Construction and Inspections
Prior to construction of the permitted system the engineer should be contacted by the contractor and owner
well in advance to provide adequate time to discuss the system components with the contractor, answer
questions, resolve any conflict issues and schedule inspection site visits based on construction progress.
County Regulations require that the Design Engineers of record perform site inspections of the permitted
system during construction and provide "As -Built" documentation of the installed system to the County
after construction is complete. The Regulations further require site inspections and approval by the County
Environmental Health Department of the exposed components of the system prior to backfilling.
Therefore the County Environmental Health Department should also be contacted and notified of the
construction schedule.
General Notes;
1) All materials and installation shall conform to the Eagle County Individual Sewage Disposal
Regulations.
2) All sewer lines and distribution lines in the system shall be 4" Schedule 40 or SDR-35 PVC unless
specified otherwise on the plans.
3) Add a two-way clean out on the service line from the proposed house.
4) The system shall be plumbed to distribute effluent to the trenches with serial distribution.
5) The contractor shall ensure that the concrete septic tank and sewer lines are watertight.
6) The trench area must be protected to prevent damage from vehicular or livestock traffic and must be
crowned to divert drainage runoff away from the trenches to minimize surface infiltration.
7) The infiltration chambers shall be installed level in each trench. A splash plate shall be installed on the
trench bottom surface below the inlet in each serial trench to prevent scouring from the effluent. The
top of the backfill over the chambers shall be covered with filter fabric.
Donald Russell
SE Job No. 21138.01
March 15, 2002
Page 5
8) The trenches must have a minimum cover of 12 inches. A final cover of topsoil suitable for vegetation,
a minimum 4" deep, shall be placed to the finished surface grade.
9) The absorption trenches must be sodded or covered with vegetative ground cover.
Our design and recommendations are based upon data supplied to us by others. If subsurface or site
conditions are found to be different from those presented in this report, we should be notified to evaluate
the effect it may have on the proposed ISDS. If the County Environmental Health Department requests
changes or modifications to this design, we should be contacted to evaluate the effect on the ISDS.
If you have any question or need any additional information, please call.
Sincerely,
SOPRIS ENGINEERING, LLC
Yancy'NitM10,11 ,
Project Engineer
Soil Absorption System Design•
Absorption area required for treatment utilizing native soils:
A = Absorption Area
Long Term Acceptance Rate method (LTAR):
LTAR loading rate f n rate een
30 and 60 min/i = 0.57 aal/S.F./day. z
A=Q/LTAR = 900/0.5 = 79 sq. ft.
1002
liecember 6, 2001
Page 3
16
�O
We recommend using a gravelless absorption trench system. The county allows up to a 50% adjustment in
absorption area if gravelless leaching chambers are used in suitable soils. The equivalent Absorption area
per chamber unit is 31 S.F. utilizing a trench system.
Assume 31 square feet per chamber: 1579 sq.ft. = 51 chambers Use 52
31 sq.ft/chamber(50%)'_____�
We recommend using a trench system composed of 4 trenches, 2 feet
infiltration chamber units in each trench. Assume 3-foot wide trenches
�lP a5'�y ILiO�
containing 16 standard ,
ava 5 vi14i1111/\.1 Ulll Ci:
Pursuant to previous discussions with Eagle County Environmental Health, serial distribution is
recommended.
x Ito T43_/a w= l q,3q4z-,
An inspection port shall be installed from the top of the pre -molded cut out at the midpoint of the ��
beginning and terminal end chambers in the trench. The vertical inspection ports shall be 4" SDR 35 pipe
extending at least 24" above the surface and topped with a 180-degree gooseneck fitting without a cap (non
glued) to insure air ventilation. This will allow for air exchange and for checking the performance of the
system.
Distribution:
An effluent filter shall be installed on the outlet of the secondary chamber in the septic tank. 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.
The distribution system shall distribute flow to the first serial chamber trench via a 4" distribution pipe
from the outlet of the septic tank. The outlet pipe from the first trench will run across the minimum 6'
separation distance to the adjacent trench chamber and connect to the inlet port in the second trench. The
flow will sheet flow along the length to the trench and connect the same way to the succeeding trenches.
Each trench will be constructed level. Successive trenches may be installed at a slightly lower elevation
than the preceding trench to accommodate drainage in the distribution pipes and surface grades. Each
trench shall be constructed not to exceed a maximum depth of 3 feet.
December 6, 2001
Page 4
General Notes:
1) All materials and installation practices shall conform to the Eagle County Individual Sewage Disposal
Regulation.
2) All sewer lines and distribution lines in the system shall be 4" Schedule 40 or SDR-35 PVC unless
specified otherwise on the plans.
3) Add a two-way clean out on the service line from the proposed house.
4) The system shall be plumbed to distribute effluent to the trenches with serial distribution.
5) The contractor shall ensure that the concrete septic tank and sewer lines are watertight.
6) The trench area must be protected to prevent damage from vehicular or livestock traffic and must be
crowned to divert drainage runoff away from the trenches to minimize surface infiltration.
7) The infiltration chambers shall be installed level in each trench. A splash plate shall be installed on the
trench bottom'surface below the inlet in each serial trench to prevent scouring from the effluent. The
top of the backfill over the chambers shall be covered with filter fabric or other suitable pervious
material to prevent the migration of fines from the overlying topsoil layer.
8) The trenches must have a minimum cover of 12 inches. A final cover of topsoil suitable for vegetation,
a minimum 4" deep, shall be placed to the finished surface grade.
9) The absorption trenches must be sodded or covered with vegetative ground cover.
Our design and recommendations are based upon data supplied to us by others. If subsurface or site
conditions are found to be different from those presented in this report, we should be notified to evaluate
the effect it may have on the proposed ISDS. If the County Environmental Health Department requests
changes or modifications to this design, we should be contacted to evaluate the effect on the ISDS.
If you have any question or need any additional information, please call.
Sincerely,
SOPRIS ENGINEERING, LLC
Paul E. Rutledge
Design Engineer
Yancy Nichol, P.E.
Project Engineer
L :4 H-F' i IEFiTE: H
Go;of'itech
April 12, 2001
Hepworth-Palcluk Geotechnical. Inc.
4020 County Road 154
Glenwood Springs, Colorado 81601,
Phone: 970-94c-79M
Fitt: 9 70-91a"-h-15:1
h pgeo Ca) Ftpgeo tech.can
Donald Russell
4092 Foxwood Drive
Virginia Beach, Virginia 23461 Job \ro. 101 286
Subject: Percolation Testing, Proposed Septic Disposal System, Lot 7, Fox Run
Meadows, Eagle County, Colorado.
Dear Mr. Russell:
As requested, a representative of Hepworth-Pawlak Geotechnical, Inc. conducted
percolation testing at the subject site to evaluate the feasibility of an infiltration septic
disposal system. The results of our work are presented in this report. The work was
done in accordance with our agreement for professional services to you, dated April 10,
2001.
A profile pit and three shallow backhoe pits were excavated at the locations shown on
Fig. 1. Percolation test holes were hand dug in the bottom of the backhoe pits. The test
holes were soaked one day prior to testing. The soils exposed in the percolation holes
are similar to those exposed in the profile pit and consist of about 1 Y2 feet of topsoil
overlying stiff to very stiff sandy silty clay file pit depth of 8 feet deep.
Groundwater was not o served in the profile pit and the soils were slightly moist.
Percolation tests were performed on April 11, 2001 by a representative of Hepworth-
Pawlak Geotechnical, Inc. The percolation test results are presented on Table I. The
percolation test results indicate an infiltration rate between about 18 to 60 minutes per
inch. T1ragatiAsalaut=36-r1untize_,h. Based on the subsurface
conditions observed and the percolation test results, the tested area should be suitable
for a conventional infiltration septic disposal system.
If there are any questions or if we may be of further assistance, please let us know.
Sincerely,
HEPWORTH - P LA G �E[XFQ'
Jordy Z. Adamson. Jl., P.VJ.
Rev, by: DEH
JZA/ksw
attachments
/ANAL �`16
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HEPWORTH-PAWLAK GEOTECHNICAL, INC.
TABLE I
PERCOLATION TEST RESULTS JOB NO. 101 286
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
39
15
water added
9
7 '/2
1 Y2
18
7 Y2
6 Y2
1
6 '/2
5 '/2
1
5 '/2
4 Yz
i 1
4 '/
4
Yz
9
8 '/2
'/2
8 ''/•-
7 Y,
1
7 Y=
6 1/2
1
P-2
•30
15
9 1/2
9 3s
0
60
9 Y=
9 '/2
0
9 '/2
9
Y2
9
$ '/a
8
8
7 '/
'/a
P-3
40
15
9 1/2
9
Y=
30
9
8 '/2
Y2
8 YZ
8
%_
8
7 '/_
%
7 '/2.
7
'/2
7
6 1/2
'/_
6 '/2
6
1/2
6 1
S '/_
'/:-1
Note: Percolation holes were hand dug in the bottom of backhoe pits and soaked on April 10,
2001. The holes were covered with rigid foam insulation to protect against freezing
overnight. Percolation tests were conducted on April 1 1 , 2001. The average percolation
rates were )lased on the last three readings of each test.
r
December 6, 2001
Russell Residence
RE: Russell Residence — Proposed ISDS System, Lot 7, Fox Run Meadows P.U.D.,
Eagle County Colorado
SE Job No. 21138.01
Dear Rodney:
Pursuant to your request, attached herewith is a letter/report presenting our findings in regard to the
feasibility and design for an Individual Sewage Disposal System (ISDS) at the above referenced Site. This
design is based can our evaluation of the site conditions with information provided by others for use in
supporting your application to Eagle County. Our recommendations are in accordance with Eagle County
and the State of Colorado ISDS Regulations. Eagle County must permit any proposed improvement to the
site. We have reviewed the information forwarded to us, conducted a site visit, formulated an ISDS design
and created a site plan with construction details as part of our scope of work.
Conclusions:
Based on our findings we believe that the design and installation of an approved ISDS system is feasible in
accordance with the Regulations of Eagle County and the State of Colorado. We recommend that a new
1250 gallon septic tank be installed that will discharge effluent to an 806 square foot soil absorption trench
system. The soil absorption system can be installed in natural soils and will be located within the building
envelope down -gradient of the proposed house, as delineated on the attached plan. The system will meet
all required setbacks and be installed within the general boundaries indicated on the plan. Our Design is
outlined below and delineated on the attached site plan.
Site Location:
The subject site is located on Fox Run Drive, on Lot 7 in The Fox Run Meadows, P.U.D. approximately 3
miles North of State Highway 82 in Eagle County, Colorado. The site is situated in Section 28, T 7 S, R
87 W of the 6th P.M. The Site comprises approximately 1.2 acres. The site is bounded on the north, south
and west by single family lots and on the east by common use areas.
Existing Site Conditions:
The site is located on undeveloped, dry rangeland and irrigated agricultural land. The site has a gentle
slope (5%) toward the west-southwest to the existing road. The existing ground surface in the proposed
septic area is on ground with an approximate slope of 5%. The site is covered with native grasses and
sagebrush. Domestic water is supplied by an existing central water system. There are no wells within the
general vicinity of the site. An existing irrigation ditch is located near the western boundary- of the site and
is in excess of 100 feet away from the location of the proposed absorption trenches.
502 Main Street - Suite A3 - Carbondale, CO 81623 - (970) 704-0311- Fax (970) 704-0313
SOPRIS ENGINEERING 0 HC rivil,nts
t
December 6, 2001
Page 2
Proposed Site Conditions:
It is our understanding that you intend to construct a 3400 S.F., 4 bedroom, home including a basement and
a garage. The maximum number of rooms to be utilized as bedrooms is 4. Therefore the system is
designed to handle the flow from 4 bedrooms. The proposed improvements will include a new ISDS
system with appropriate site grading. The new structure is to be generally located in the building envelope
shown on the plan.
Subsurface Conditions:
Attached herewith are the results of the subsurface investigation and percolation tests conducted on April
111 2001 by Hepworth Pawlak Geotechnical, Inc. The report is dated April 12, 2001, Job Number 101286.
The subsoil encountered at the site consists of 1 % feet of topsoil overlying sandy silty clay to the depth
explored in the profile pit of 8 feet. Groundwater was not encountered in the test profile pit.
Percolation testing utilized three test holes, which yielded varying absorption rates. The fastest measured
rate was 18 minutes per inch and the slowest measured rate was 60 minutes per inch. The average
percolation rate is 36 minutes per inch and is suitable for a conventional absorption system.
D_esian Criteria
The absorption field is designed based on utilizing the suitable native soil for treatment in trenches. Based
on the reported percolation rate and observations of the percolation holes and test pit we have designed a
system that will treat the calculated quantity of effluent with native soils utilizing the Long Term
Acceptance Rate (LTAR) for the native soils. The LTAR is based on the interpolation of absorption rates
corresponding to the average percolation rate. The wastewater application rates are from Table 7-2, EPA
Design Manual, Onsite Wastewater Treatment and Disposal Systems.
Proposed residence is a 4-bedroom house. The design flow is calculated as follows:
Residence unit - 4 bedrooms @ 2 person /bedroom = 8 person
From the Eagle County I. S. D. S. Regulation;
Max. Design flow (Qd) _ # of people x 1.5(avg. flow) gal/person/day.
Gallons per day for the subject house = 75 gaUperson/day
Qd = 8 * 75 * 1.5 =900 gal/day
Septic Tank Design:
Residence
Q = 8*75*1.5 =900
Volume (V) of tank = Design Flow * 1.25 (30 hour retention time)
V = 900 gal/day * 1.25 = 1125
Use one 1250-gallon septic tank
ISDS PERMIT # 4%2,-'02,
PERCOLATION TEST
EAGLE COUNTY ENVIRONMENTAL HEATLH
•PHSYSICAL ADDRESS:
LEGAL DESCRIPTION: `1 -
MAILING ADDRESS:
TYPE OF DWELLING: NUMBER OF BEDROOMS:
TEST HOLES PRE-SOAKED: YES NO
SOIL
TIME WATER DEPTH INCHES OF FALL RATE PROFILE
TIME TO DROP LAST INCH: PERC RATE:
MINIMUM LEACH FIELD SIZE: MINIMUM SEPTIC TANK SIZE:
2-
ENVIRONMENTAL HEALTH SPECIALIST DATE
ISMS permit # Z,72- ®Z Date ��/7/e Z.In. �eC9'i �s•n
Complotenesa Form
Tank is�Zsgal. Tank Material e
0
`Tank is located &'0 ft. an
dSj._9 egreea f xxom-&N eom o _
ipezzaceze 1a d, =kj
Tank is located =ft. and/VZ9,Segrees from
/� la•�saacn laadearsc)
Tank set level. 2-Tank lids within 8" of finished grade.
ize of field �ftZ units* �/,O
lineal ft.
Technology
�Cleanout is installed 'in between tank and House (+ 1J100ft) ,
There is a "T" that goes down
14 inches in the inlet and
outlet of the tank:
"r-Inlet. and outlet is sealed with tad -;-tape;. rubber gasket etc.
cr�T%Wnk-.°has•:°h*a•:-d5mpartments with the.; 4ig-er-,,cpmpartment closest to
house.
'�
Nteaaure: -d b••tance and relative
di:repf:ia�a
.V e:d�lt
field. 3 Zr
...Depth of ft .
oil interface raked.
Inspection portals at the•end
of each trench_,
Proper distance to setbacks.
Chambbers properly installed as
per manufacturers specifications.
(Chambers latched, end plates
properly installed, rocks temove'd from
trenches, etc.) .
of pipe used for building
sewer 1ineS0-3 leach field-r0-Z-'
Other
�spectioa meets recuiraments.
Copy form to -installer's file if recommendations for improvement were
suggested. •• '
ACTION TIUMN :
setbacks
Well Potable House Property Lake Dry Tank Drain
Water Lines line Stream Gulch
Field 100 25 20 10 50 25 10 10
Tank 50 10 5 10 50 10 * 10
ISDS Permit # 2172-02 tate .E//-7/e Z
?SDS Pin.al Infipecti oz
e2mleteness Form
(Tank islZS.a gal. Tank Material e o/t..cd`�
`Tank is located ,,'0 ft. andSjgffkdegrees fromkl)yedpop ✓' e,
(peru=ene 1•andaLxk)
��Tank is located �f t . and/_79.S� grees
/� (pasaammt laadaark)
Taa.k set level. :- Tank lids within 8" of finished grade.
'Size of field 3 f z unitsar (/ks lineal ft.
Technology 0
-cleanout is installed in between tank and house (+ 1/100ft) .
�-There is a "T" that goes down
14 inches in the inlet and
outlet of the tank:
�-Iri1et.and outlet is sealed with tag%tape,. rubber gasket etc.
Tank, °lx3s aria : impartments with
the.;: ;aig-er-.•,QQmpartment closest to
house.
�•�•'-.Me'a&Uxe:
-d i;•tance and relative
dia:rep%iq:_ to•.::fielgi;
...Depth of field. 3,7-r ft.
':Al. RV! W...S3. c-
Soil interface raked.
Inspection portals at the.end
of each trench.
oper distance to setbacks.
Chambers properly installed as
per manufacturers specificat:.ons.
(Chambers latched, end plates
properly installed, rocks temoved from
trenches, etc.)
_44e-1type of pipe used for building
sewer Line.W-3 leach field-MjO `Ir
Other
�/ Inspection meets re9nirements.
Copy form to a file if recommendations for improvement were
suggested.
ACTION TAKEN:
Setbacks
Well Potable House Property Lake Dry Tank Drain
Water Lines line Stream Gulch
Field 100 25 20 10 50 25 10 10
Tank 50 ' 10 5 10 50 10 * 10
ISDS Permit # 2-1-7 2- ODate
XSDS Final Inapection
Q=leteness Form
Tank is 11�50gal_ Tank Material
Tank is located ft. and degrees from
Ipex aaeat liodmark)
Tank is located �ft . and � ��egrees from C Q jz!L_ awe- taw V,-o�i C. v LA", co 6JA
(pas.aoMt laa0oark) l,� - V
Tank set level. Tank lids within 6" of finished grade.'A''�
Size of field t2 units heal ft.
Technology
cleanout is installed in between tank and house(+ 1/100ft)_
:�+� There is a "T" that goes down 14 inches in the inlet and
outlet of the tank.
�i�1et and outlet is sealed with tar, -,tape,. rubber g.2dt etc.
✓� -bAs .t*ot-do'Mpartments with the.,i3a r.....cggpartment closest to the
r house.
5� i a�Bure: distance and /relative dirertio - ta,,fa: za;
V'.DOpth of field 5 ft.
Soil interface raked..
1� Inspection.portals at the _end of each trench.. t�
`Proper distance to setbacks.dp ,, 5a ' Z
1/ Chambers properly installed as per manufacturer$ specifications.
(Chambers latched, end plates properly installed, 7cks removed from
trenches, etc.)
�•• .Type of pipe used for building sewer line a �suU 5D� 3s v
p p g each field
Other
Inspection meets requirements.
Copy form to installer's file if recommendations for improvement were
suggested.
ACTION TAKEN:
Setbacks
Well Potable House Property Lake Dry Tank Drain
Water Lines line Stream Gulch -
Field 100 25 20 10 50 25 10 10
T.dIl& 50 10 5 10 50 10 * 10
EAGLE -COUNTY ENV. HEALTH
P.O. BOX 179
EAGLE, CO 81631
JOB Z 1 7 Z-0 2
SHEET NO. OF
CALCULATED BY DATE
CHECKED BY DATE
s 1) LE 18?-
rnuuuu a xua-i Isin%a sneers) zn5-I IPaaaea) /names/® inc.. umlon, Mau. Own. io Order PHONE TOIL FREE 1-000-225.M
2172-02 Tax# 2391-284-07-007
JOB NAME_ Lot #7, Fox Run Meadows RUSSELL
340 Fox Run Drive, Carbondale
JOB NO.
DA7;ESTARTED
DATE COMPLETED
DATE BILLED
111
W-m-11141
111 M11
if Wirg
WINE1111
MIN
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JOB COST SUMMARY
1111 ,
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TOTAL SELLING PRICE
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TOTAL MATERIAL
TOTAL LABOR
COSTS
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TOTAL • - •
�■
1W
COSTS
OVERHEAD% OF SELLING PRICE
-■
JOB FOLDER Product 278 �5 � 5,4� j&B 0&C6 hh
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