HomeMy WebLinkAbout1320 Green Meadow Dr - 239128104002INDIVIDUAL 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. 2077-01 BP NO. 13581
OWNER: JACK AND DENA ALBRIGHT PHONE: 970-704-0476
MAILING ADDRESS: 0102 BADGER, CARBONDALE, CO 81623
APPLICANT: SAME PHONE:
SYSTEM LOCATION: 1320 GREEN MEADOW DRIVE, CARBONDALE, CO TAX PARCEL NO. 2391-281-04-002
LICENSED INSTALLER: HUGHES EXCAVATING, RANDY HUGHES LICENSE NO. 4-01 PHONE: 970-379-2309
DESIGN ENGINEER: SOPRIS ENGINEERING, PAUL RUTLEDGE PHONE NO. 970-704-0311
INSTALLATION HEREBY GRANTED FOR THE FOLLOWING: MINIMUM REQUIREMENTS FOR A 5 BEDROOM RESIDENCE
2000 GALLON SEPTIC TANK WITH AN EFFLUENT PUMP THAT DELIVERS 150 GALLONS PER DOSE, 2232 SQUARE FEET OF ABSORPTION AREA
CREDIT, VIA 72 INFILTRATOR UNITS, AS PER ENGINEER'S DESIGN REVISIONS DATED JUNE 8, 2001.
SPECIAL REQUIREMENTS: INSTALL AS PER ENGINEER'S DESIGN REVISIONS AS FOLLOW: 1) A PROFILE HOLE MUST BE DUG TO VERIFY A 4 FEET
SEPARATION TO BEDROCK AND GROUND WATER; 2) MAINTAIN ADDITIONAL SET BACK REQUIREMENTS DUE TO THE DESIGN FLOW IN EXCESS OF
."kck' I'Pfrmcl.
1000GPD, 35 FEET FROM THE LEACH FIELD TO THE DRY GULCH; 3) TRENCH LENGTH NOT TO EXCEED 100 FEET; 4) DOSING VOLUME SET TO 150 ar less
GALLONS PER DOSE. RAKE ALL TRENCH SURFACES TO PREVENT THE SMEARING OF SOILS AND DO NOT INSTALL IN WET WEATHER. INSTALL IN-
SPECTION PORTALS IN EACH TRENCH AND A CLEANOUT BETWEEN THE TANK AND THE HOUSE. CALL EAGLE COUNTY ENVIRONMENTAL
HEALTH AND THE DESIGN ENGINEER FOR FINAL INSPECTION PRIOR TO BACK FILLING ANY PART OF THE INSTALLATION, OR WITH ANY
QUESTIONS REGARDING THE INSTALLATION. THE BUILDING CERTIFICATE OF OCCUPANCY WILL NOT BE ISSUED UNTIL THE SEPTIC SYS-
TEM HAS BEEN INSPECTED AND APPROVED.
ENVIRONMENTAL HEALTH APPROVALAQ',L(/IA J&AzmL DATE: JUNE 11, 2001
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: 2232 SQUAREFEET(VIA 72 INFILTRATOR UNITS AS PER DESIGN )
INSTALLED CONCRETANTK:2000 GALLONS IS LOCATED 110 DEGREES AND [ FEET 6 INCHES
FROM THE CLEAN OUT ON THE EAST SIDE OF THE HOUSE.
COMMENTS: THE FINAL INSPECTIONS WERE DONE BY LAURA FAWCETT OF EAGLE COUNTY ENVIRONMENTAL HEALTH
AND THE DESIGN ENGINEER ON 4-22-02. THE ENGINEER'S FINAL CERTIFICATTON AND AS—BUTT,T T)RAWTNG
WERE RECEIVED ON 8-14-02, THIS SYSTEM TS T.ARGE FN01TCTj FnR A 5 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 d�, DATE: AUGUST 15, 2002
�ricomplete Applications Will NOT Be Accepted
(Site Plan MUST be attached)
ISDS Permit #
Building Permit # i ,h 5 F
APPLICATION FOR INDIVIDUAL SEWAGE DISPOSAL SYSTEM PERMIT
ENVIRONMENTAL HEALTH OFFICE - EAGLE COUNTY
P. 0. BOX 179
EAGLE, CO 81631
Eagle (970)328-8755, Fax (970)328-0349, E1 Jebel (970)927-3823
**************************************************************************
* - EE„ SCHEDULE
* PERMIT APPLICATION FEE $150.001)
* PERCOLATION TEST/SOIL PR SITE EVALUATION
FEE($200. 0'
* SITE VISIT/CONSULTATION FEE $85.00
* REINSPECTION FEE $47.00
* MAKE ALL REMITTANCE PAYABLE TO: "EAGLE
COUNTY TREASURER"
**************************************************************************
PROPERTY OWNER:
MAILING ADDRESS: 6) 0�L cA it i,p6.��
APPLICANT/CONTACT PERSON:44-
LICENSED SYSTEMS CONTRACTOR: 7�h1jh,5
COMPANY/DBA:
ADDRESS:
PHONE: 7'y` -%y76
PHONE: J"cl._ eDel �,
PHONE: 3?/'(3�30/
PERMIT APPLICATION IS FOR: (`ONEW INSTALLATION ( ) ALTERATION ( ) REPAIR
LOCATION OF PROPOSED INDIVIDUAL SEWAGE DISPOSAL SYSTEM:
Legal Description: —64 ,/4, "c��'.5 dle-4
Tax Parcel Number: r ! ! C /00;;� Lot Size: �I �8 A61 5
Physical Address: �l'�ir7�'�rC--A
BUILDING: TYPE: (Check applicable category)
( ° f Residential/Single Family Number of
( ) Residential/Multi-Family* Number of Bedroca-Lo
( ) Commercial/Industrial* Type
*These systems require design by a Registered Professional Engineer
TYPE OF WATER SUPPLY:
( ) Well ( )
(/� Public Name
(Check applicable category)
Spring ( ) Surface
of Supplier:
APPLICANT SIGNATURE: !� ' .!' Date:`��(
**************************************************************************
AMOUNT PAID: 35p RECEIPT #: �0 7 DATE: 2
CHECK #: CASHIER:
1 N am- (Co`' I-C) igaco.- -
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 18, 2002
TO: Timberline Trucking
Raymond P. Merry, REHS
Director
FROM: Environmental Health Division
RE: Reissuance of Individual Sewage Disposal System Permit No.2077-01. Tax
Parcel #2391-281-04-002. Property Location: 1320 Green Meadow Drive,
Carbondale, CO., Albright residence.
Enclosed is your ISDS Permit No. 2077-01 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
Community Development Department
(970) 328-8730
FAX (970) 328-7185
TDD (970) 328-8797
Email: eccmdeva@vail.net
http: //www.eagle-county.com
Date: June 11, 2001
EAGLE COUNTY, COLORADO
TO: Hughes Excavating
FROM: Environmental Health Division
Eagle County Building
P.O. Box 179
500 Broadway
Eagle, Colorado 81631-0179
RE: Issuance of Individual Sewage Disposal System Permit No.2077-01. Tax Parcel
#2391-281-04-002. Property Location: 1320 Green Meadow Drive, Carbondale,
CO., Albright residence.
Enclosed is your ISDS Permit No. 2077-01 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
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
August 14, 2002
Jack and Dena Albright
0102 Badger
Carbondale, CO 81623
Raymond P. Merry, REHS
Director
RE: Final of ISDS Permit #20775-01, Tax Parcel #2391-281-04-002. Property
location: 1320 Green Meadow Drive, Carbondale, CO.
Dear Mr. & Mrs. Albright:
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,
VF A
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
IsDS Permit # 2-6 7 7-61 Z :
Date/
• ����� ete*+ea� ��
Tank is gal, Tank Material
Tank is located .2 2 ft. and_Q/ degr_es e from
(permwene 18Zd Z*)
Tank is located �Z _f t . and//�-: = degrees
tp�stmaaac
Tank set level. ::: —_Tank lids within 8-1 of finished grade.
Size of field/-LL� ft2 72- units-
Technology lineal ft.
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:
1-n-let . and outlet is sealed with tad --,tape, rubber gasket etc.
�`` T has' bd o : r�mpartments with the. ;1ai^ger..;e paztnnEnt closest to the
house . .. ,
� -Mea ;u e: distance and relative dir
ej:;'��C3
It
--- In.specti.on portals at the .end of
Proper distance to setbacks.
-t'%fl.e:�d :
epth of 'field. _ ft.
Soil interface raked.
--- In.specti.on portals at the .end of
Proper distance to setbacks.
;7' :t3'.a .2•c� 9 ,,%z- •'tzrs' � c�r.:�.;�<c,nd
,.aiy
Bach trench,
Chambers properly installed as per manufacturers specifications.
(Chambers latched, end plates properly installed, rocks removed from
trenches, etc.)
Type of pipe used for building sewer line_5'I' '-: = leach field
Other
Inspection meets re-{uirsments.
Copy farm to Anstalleri s file if recommendations for improvement were
suggested.
ACTZ ON TAMN :
Setbacxa
Well Potable House Property Lake Dry Tank Drain
Water Lines line -Stream --Gulch
100 25 20 10 50 25 10 10
-�'.gxk 5o 10 5 10 50 10 * 10
Chambers properly installed as per manufacturers specifications.
(Chambers latched, end plates properly installed, rocks removed from
trenches, etc.)
Type of pipe used for building sewer line_5'I' '-: = leach field
Other
Inspection meets re-{uirsments.
Copy farm to Anstalleri s file if recommendations for improvement were
suggested.
ACTZ ON TAMN :
Setbacxa
Well Potable House Property Lake Dry Tank Drain
Water Lines line -Stream --Gulch
100 25 20 10 50 25 10 10
-�'.gxk 5o 10 5 10 50 10 * 10
July 11, 2002
Mr. Jack Albright
Albright Residence
0102 Badger Road
Carbondale, CO 81623
RECEIVED
RE: AS -BUILT ISDS System - Albright Residence, Lot 16, Sopris Mesa,
Missouri Heights, Eagle County Colorado AUG 14 2002
SE Job No. 21050.01 Permit No. 2077-01 BP No. 13581
Dear Jack:
ENVIRONMENTAL
HEALTH DEPARTMENT
Pursuant to Eagle County regulations, this letter and attached drawing provides documentation that the new
ISDS system recently installed is in general compliance with the permitted design. Sopris Engineering has
performed site visits to inspect, measure 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 double compartment, 2000-gallon concrete septic tank system has been installed with the dosing pump
vault assembly. A two-way clean out has been installed between the house and the tank. Each trench was
installed level and is complete with an inspection port. Adjacent trenches have a horizontal separation of
approximately 6 feet. The total as -built trench absorption area is 1120 SF, utilizing 72 chambers installed in
5 serial trenches.
The ISDS components have been installed in accordance with Eagle County ISDS Regulations; the Sopris
Engineering Report dated May 16, 2001, the Sopris Engineering letter dated June8, 2001 and the design
drawings dated May 17, 2001.
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.
LLC
502 Main Street •
Suite A3 • Carbondale, CO 81623 •
(970) 704-0311
• Fax (970) 704-0313
SOPRis
ENGINEERING •
LL
civil consultants
MAY 2, 2001
Mr. Jack Albright
Albright Residence
0102 Badger Road
Carbondale, CO 81623
MAY 1 cis 2001
SAGLE COUNTY
COMMUNITY 01Lvrj6 PM5NT
RE: Albright Residence — Proposed ISDS System, Lot 16, Sopris Mesa,
Missouri Heights, Eagle County Colorado
SE Job No. 21050.01
Dear Jack:
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
1'"gallon septic tank be installed that will discharge effluent to a 1120 square foot soil absorption trench
system. The soil absorption system can be installed in natural soils and will be located within the septic
envelope cross -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 Green Meadow Drive in Missouri Heights, North of County Road 102, off
Fender Lane, on Lot 16 in The Sopris Mesa Subdivision 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 61h P.M. The Site
comprises approximate) . The site is bounded on the north, east and south by single family
acreages and on the West by Green Meadow Drive Court.
Existina Site Conditions:
The site is located on undeveloped, dry rangeland. The site has a gentle slope (5-6%) toward the south-
southeast. The existing ground surface in the proposed septic area is on ground with an approximate
slope off". The site is covered with native grasses and sagebrush. Domestic water is supplied by an
existing central water system, with a service located near the northwest property -corner. There are no wells
502 Main Street •
Suite A3 • Carbondale, CO 81623 •
(970) 704-0311• Fax
(970) 704-0313
SOPRis
ENGINEERING 9
LLC
civil consultants
Jack Albright
SE Job No. 21050.01
May 2, 2001
Page 2
within the general vicinity of the site. The nearest existing absorption fields on adjacent lots are located in
excess of 100 feet away from the location of the proposed absorption trenches.
Proposed Site Conditions:
It is our understanding that you intend to construct a S.F., 3 bedroom.hame including an additional
bedroom to be built in the futer and a future proposed detached garage with an accessory dwelling unit
(ADU). The maximum number of rooms to be utilized as bedrooms in the i6ture is 5. *Therefore the
system is designed to handle the flow from 5 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:
A subsurface investigation and percolation tests were conducted in April 2001 by Hepworth-Pawlak
Geotechnical, Inc. The subsoil encountered at the site consists of Moot of topsoil overlying -sandy clay
with scattered basalt fragments to the maximum 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 similar absorption rates. The fastest measured
rate was 34 minutes per inch and the slowest measured rate was 60 minutes per inc?t. The average
percolation rate is 38 minutes per inch and is suitable for a conventional absorption system. —I (:� 1, C
0 Design Criteria:
Proposed residence is a 4-bedroom house with a proposed accessory dwelling unit (ADU). The ADU is
proposed to be built in the future within a detached garage. The design flow is calculated as follows:
Residence unit - 5 bedrooms @ 2 person /bedroom = 10 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 = 10*75* 1.5 =1125 a
Septic Tanlc Design:
Residence
Q = 10*75*1.5 =1125
Volume (V) of tank = Design Flow * 1.25
(30 hour retention time)
V = 1125 gal/day * 1.25 = 1406
Use one 1550-gall6n septic tank
y
Jack Albright
SE Job No. 21050.01
May 2, 2001
Page 3
Percolation Test Results:
The results of percolation tests indicated the average percolation rate of 38 minutes per inch is within .
acceptable ranges for conventional absorption systems as required by Eagle County regulations. The field
is sized by using the long term acceptance rate equation and the required values contained in Table-5 of the
Eagle Conty ISDS regulations Sub -Surface Absorption Area For Dwelling Use. A soil absorption trench
system, utilizing gravelless chambers is recommended. E - of
Soil Absorption System Design:
U
Calculate per Table 5: A = #bedrooms x 275 sf trenchibedroom = 5 x 275 = 1375 sf
Calculate per LTAR method: Assume LTAR = 0.5 gal/day/sq. ft.
A = Qd = 1125 = 2250 sq. ft. Apply a 50% reduction for utilizing gravelless
LTAR 0.50 infiltration chambers.
Assume 31 square feet per chamber: 2250 sq.ft. = 72 chambers Use 72 chambers 2 2. ° r
31 sq.ft/chamber(50%) 3
Use 1120 sf of trench with gravelless chambers: Assume 3-foot wide trenches with 6.25-foot long chamber
units.
We recommend using a trench system composed of 8 trenches 56.25 feet long and 3 foot wide, containing
9 standard infiltration chamber units in each trench. Pursuant to previous discussions with Eagle County
Environmental Health, serial distribution is recommended.
We recommend that the trenches be connected with the inlet pipe coming into the inlet port of the first
trench chamber and the outlet pipe connected to the opposite end chamber. The outlet pipe will run across
the minimum 6' separation distance to the adjacent trench chamber and connect to the inlet port. The flow
will run the length to the trench and connect the same way to the next consecutive trenches. Each trench
will be constructed level with successive trenches installed at a slightly lower elevation than the preceding
trench. Each trench shall be constructed not to exceed a maximum depth of 3 feet. The method allows for
the sloped terrain, provides increased longevity of the system and allows for maintenance and/or partial
reconstruction if needed. An inspection port should be installed on the top mid -point cut out at the serial
end chamber in each trench. This will allow for checking the performance of the system over time.
.116
-a i �k2 �dcc
7 Z 2
Jack Albright
SE Job No. 21050.01
May 2, 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 distribution effluent into 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 from the top of the pervious cover layer 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
MAR-26-1900 19:29
P. 02
June 8, 20011
Laura Fawcett
Environmental Health
Department of Community Development
500 Broadway
Eagle, CO 81631-0179
RE: Albright Residence — Proposed ISDS System, Minor Revisions Documentation
Lot 16, Sopris Mesa, Missouri Heights, Eagle County, Colorado
SE Job No. 21050.01
Pursi-=t to your request, this letter presents documentation in regard to minor revisions of the Individual
Sewage Disposal System (ISDS) proposed for the above -referenced Site. The revisions are based on
previous discussions and your final review and acceptance for issuing the ISDS permit.
It is our understanding that this documentation will be attached to the pen-nitand the previously submitted
report and plans as additional conditions to the permit. We will defer drafting the modifications to the
existing permit drawings until the, as -built drawing is produced. We understand that the permit will be.
issued upon receipt of this letter with the following conditions as discussed.
'/I) The original design calculations presented in Our report, dated May 16,2001, recommended a peak
design flow of 1125 gpd. Pursuant to County Regulations certain setbacks are increased by 8 feet
per everyl 00 gpd in excess of 1000 gpd design flow. Therefore the required setback of the
absorption field from the dry gulch needs to be a minimum of 35 feet.
�2) The original design calculations presented incur report, dated May 16, 2001, recommended 1120
square feet absorption area utilizing 72 chamber units installed in 4 trenches 112 feet Jong. Pursuant
to County Regulations the maximum recommended trench length is 100 feet even though the
system uses serial distribution. Therefore the addition of a fifth serial trench containing 6 of the 72
total chamber units needs to be installed, This additional trench will be38 feet in length. The
second, third and fourth serial trenches Will be 100' long and contain 16 chambers each. The first
serial trench will remain the same as designed with the original 18 chamber units due to the fact
that it is'pressure dosed with a perforated pipe running the full length. The re,4sed trench system
will meet all required setbacks and conform to general specifications outlined in our previous
report. 'file revised design will be delineated on the as -built drawings.
3) As discussed an additional profile hole, will be dug prior to installation of the absorption trenches to
ascertain that the soils have lbe same characteristics used in the design based on the previous
profile. The profile hole will determine the presence of 4 feet of suitable soils below the bottom of
the proposed trenches. The profile hole should be located between the absorption field and the dry
gulch and will be left open for inspection by the County Environmental Heath Specialist.
SopRis
ENGINEERING
LLC
civil unsultants
MRR-26-1900 19:29
P. 03
Laura Fawcett
SE Job No, 21050.01
6/8/01
1 Page 2
4) The maximum dosing volume should not exceed 150 gallons per recommendations by Eagle
County Staff to insure dosing during periods of low flow. Our original report recommended that
the dose not exceed 250 gallons.
J5) The residual effluent in the pressurized transport line to the first serial trench has been designed to
drain back to the tank. The volume of the residual effluent is approximately 40 gallons. The tank
has been oversized by 250 gallons. This information is provided to clarify the design function.
The revised design will be documented in an as -built letter and \Nrill be delineated on as -built plans to be
submitted to Eagle County after construction is completed.
If you have any question or need any additional information, please call.
Sincerely,
SOPRIS ENGINEERWIG, LLC
Paul E. Rutledge
Design Engineer
Cc: Jack Albright
MAR-26-1900 19:28
P. 01
FAX Transmittal
company..
Fax A�.
Date:
70121 ?29e$-4
SE Prejact me.
From:
0 069inal not to follow
0 Orqnal to follow by mail
0 Original to be delivered by messenger
0 Or' 19inal to be picked up
C2-
502 main street t,
suite A3 - r-arbondale, CO 81623
(970) 704-0311
m fax (970) 704-031
SepHis
ENGINEERING
LLC
, PhIll .1hncijtt—+,e
Mr. Jack Albright
Albright Residence
0102 Badger Road
Carbondale, CO 81623
MAY 16, 2001
RECEI'V'L....4'
►11
RE: Albright Residence — Proposed ISDS System, Lot 16, Sopris Mesa, EAGLE COUNTY
Missouri Heights, Eagle County Colorado COMMUNITY
SE Job No. 21050.01
Dear Jack:
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
2000 gallon septic tank be installed that will discharge effluent to a 1120 square foot soil absorption trench
system via a dual pump dosing system. The soil absorption system can be installed in natural soils utilizing
leaching chambers connected for serial distribution. The system will meet all required setbacks and be
installed within the general location shown on the plan. Our design is outlined below and delineated on
the attached site plan.
Site Location:
The subject site is located on Green Meadow Drive in Missouri Heights, North of County Road 102, off
Fender Lane, on Lot 16 in the Sopris Mesa Subdivision 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 61h P.M. The Site
comprises approximately 2.6 acres. The site is bounrlPrl nn th by single family
acreages and on the West by Green M _
502 Main Street • Suite A3 ® Car
Am M
5 0 P nomh I b k Nam G I IN
Environmental Health
Specialist
Eagle County Building
P.O. Box 179
500 Broadway
EAGLE COUNTY, COLORADO
Eagle, Colorado 81631-0179
(970) 328-8756
DEPARTMENT OF
FAX (970) 328-0349
COMMUNITY DEVELOPMENT
TDD (970) 328-8797
http://www.eagle-county.co,
civil consultants
Existing Site Conditions:
Jack Albright
SE Job No. 21050.01
May 16, 2001
Page 2
The site is located on undeveloped, dry rangeland. The site has a gentle slope (5-6%) toward the south-
southeast. The existing ground surface in the proposed septic area is on ground with an approximate
slope of 6%. The site is covered with native grasses and sagebrush. Domestic water is supplied by an
existing central water system, with a service located near the northwest property corner. There are no wells
within the general vicinity of the site. The nearest existing absorption fields on adjacent lots are located in
excess of 100 feet away from the location of the proposed absorption trenches.
Proposed Site Conditions:
It is our understanding that you intend to construct a 3 bedroom home including an additional bedroom to
ber-braTHei rtt fine and a future proposed detached garage with an accessory dwelling unit (ADU). The
maximum number of rooms to be utilized as bedrooms in the future i§ Therefore the system is designed
to handle the flow from 5 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:
A subsurface investigation and percolation test was conducted on April 24, 2001 by Hepworth-Pawlak
Geotechnical, Inc (HP). The results are attached in the HP report dated May 16, 2001, Job Number 101
250. The subsoil encountered at the site consists of I foot of topsoil overlying sandy clay with a layer of
basalt gravel and rocks between 5 and 6 feat to the maximum depth explored in the profile pit of 8 1/2 feet.
Groundwater was not encountered in the test profile pit.
Percolation testing utilized three test holes, which yielded similar absorption rates. The fastest measured
rate was 24 minutes per inch and the slowest measured rate was 60 minutes per inch. The average
percolation rate is 38 minutes per inch and is suitable for a conventional absorption system.
Design Criteria:
Proposed residence is a 4-bedroom house with a proposed accessory dwelling unit (ADU). The ADU is
proposed to be built in the future within a detached garage. The design flow is calculated as follows:
Residence unit - 5 bedrooms @ 2 person /bedroom = 10 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 = 10*75* 1.5 =+I-M� a�/.� ;
Jack Albright
SE Job No. 21050.01
May 16, 2001
Septic Tank Design:
Page 3
Residence
Q = 10*75* 1.5 =1125
Volume (V) of tank = Design Flow * 1.25
(30 hour retention time)
V = 1125 gal/day * 1.25 = 1406
The tank needs to be upsized by 250 gallons due to the proposed dosing system for a minimum volume of
1750 gallons. A 1;75a�gallon tarrk�may not be readily available.
Use orr is -tank if a 1750 gallon tank is not available.
Percolation Test Results:
The results of percolation tests indicated the average percolation rate of 3 8 minutes per inch is within
acceptable ranges for conventional absorption systems as required by Eagle County regulations. The field
is sized by using the long term acceptance rate equation and the required values contained in Table-5 of the
Eagle County ISDS regulations Sub -Surface Absorption Area For Dwelling Use. A soil absorption trench
system, utilizing gravelless chambers is recommended. Eagle County requires an average 275-sq. ft. of
trench per bedroom based on a percolation rate of 38 minutes per inch.
Soil Absorption System Design:
Calculate per Table 5: A = #bedrooms x 275 sf trench/bedroom = 5 x 275 = 1375 sf
Calculate per LTAR method: Assume LTAR = 0.5 gal/day/sq. ft.
A = Qd = 1125 = 2250 sq. ft. Apply a 50% reduction for utilizing gravelless
LTAR 0.50 infiltration chambers.
12 S -fit z
Assume 31 square feet per chamber: 2250 sq.ft. = 72 chambers Use 72 chambers Sb
31 sq.ft/chamber(50%) -72 x 31
Use 1120 sf of trench with gravelless chambers: Assume 3-foot wide trenches with 6.25-foot long chamber
units.
--),We recommend using a trench system composed of 4 trenches 112 feet long and 3 foot wide, containing 18
standard infiltration chamber units in each trench. Pursuant to previous discussions with Eagle County
Environmental Health, serial distribution is recommended.
Serial Trench Distribution System
We recommend that the trenches be connected with the inlet pipe coming into the inlet port of the first
trench chamber and an outlet pipe connected to the opposite end chamber. The outlet pipe will run across
the minimum 6' separation distance to the adjacent trench chamber and connect to the inlet port. The flow
Jack Albright
SE Job No. 21050.01
May 16, 2001
Page 4
will run the length of the trench and connect the same way to the next consecutive trenches. Each trench
will be constructed level with successive trenches installed at a slightly lower elevation than the preceding
trench. Each trench shall be constructed not to exceed a maximum depth of 3 feet. The method allows for
the sloped terrain, provides increased longevity of the system and allows for maintenance and/or partial
reconstruction if needed. An inspection port should be installed on the top mid -point cut out at the serial
end chamber in each trench. This will allow for checking the performance of the system over time.
Effluent will be pumped to the first serial trench and distributed through a 2" pressurized perforated
distribution pipe running the length of the first trench to the mid point of the end chamber.
Dosing Distribution System
A septic tank effluent pump system will be utilized to transport effluent to the first serial trench. We
recommend the use of an Orenco Systems BioTube pump vault system or approved equal. The pump
system shall incorporate dual pumps to insure continuous operation in the event that one pump fails to
operate. The controls shall provide for alternate operation of each pump. Automatic float switches
including a hith water float with alarm shall be incorporated in the system. The pump assembly and dosing
chamber will be installed in the secondary compartment of the septic tank. The septic will utilize an
effluent filter. The transport line from the dosing pump to the absorption field shall be schedule 40'PVC
with a maximum diameter of 2.0 inches. The first serial trench will be pressure dosed utilizing a maximum
2" diameter perforated pipe running the length of the trench to the midpoint of the end chamber. The
orifices in the distribution lateral shall be4/8"_K'" diameter spaced at a maximum 47 apart. The perforated
distribution pipe will be installed at the top of the chambers and:.oriented to spray=upward off -center. A 2"
plastic ball valve will be installed on the end of the distribution pipe to be visible and operational from the
4" inspection port. The effluent pump shall be sized to pump at a minimum velocity of 4 ft/sec. The
dosing volume shall not exceed flfoifs.
o �e � �' � � dose Icy
Maintenance , C
The dual pump dosing assembly and filter shall be maintained when the tank is pumped or as needed.
Suitable component handles and extensions on the pump and filter assemblies will be installed to provide
easy maintenance. We recommend a periodic inspection and maintenance procedure be performed every 6
months.
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) A,4a-two=wayclean'outon the service line from the proposed house.
4) T 11e system shall be plumbed to distribution effluent into the trenches with serial distribution.
5) T contractor shall ensure that the concrete septic tank and sewer lines are watertight.
6) 1'ble trench area must be protected to prevent damage from vehicular or livestock traffic and must be
Awned to divert drainage runoff away from the trenches to minimize surface infiltration.
Jack Albright
SE Job No. 21050.01
May 16, 2001
Page 5
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 from the top of the pervious cover layer 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
Hepworth-Pawlak Geotechnical, Inc.
5020 County Road 154
Glenwood springs, Colorado 81601
Phone: 970-945-7988
Fax:970-945-8454
hpgeo@hpgeotech.com
May 16, 2001
Jack Albright
c/o S.K. Peightal Engineers
76 Sunset Drive, Unit #4
Basalt, Colorado 81621 Job No. 101 250
Subject: Subsoil Study for Foundation Design, Proposed Residence, Lot 16,
Sopris Mesa Subdivision, 1320 Green Meadow Drive, Eagle County,
Colorado.
Dear Mr. Albright:
As requested, Hepworth-Pawlak Geotechnical, Inc. performed a subsoil study for
design of foundations at the subject site. The study was conducted in accordance with
our agreement for geotechnical engineering services to you dated March 28, 2001. The
data obtained and our recommendations based on the proposed construction and
subsurface conditions encountered are presented in this report. Hepworth-Pawlak
Geotechnical, Inc., previously performed a preliminary geotechnical study for the
Sopris Mesa Subdivision dated October 23, 1997, Job No. 197 495.
Proposed Construction: The proposed residence will consist of a two story wood
frame structure over a walkout basement level located on the site as shown on Fig. 1.
The attached garage and basement floors will be slab -on -grade. Cut depths are expected
to range between about 4 and 8 feet. Spread footings sized for an allowable soil bearing
pressure of 1,500 psf and a lateral earth pressure of 45 pcf equivalent fluid unit weight
were assumed in the foundation design.
If building conditions or foundation loadings are significantly different from those
described above, we should be notified to re-evaluate the recommendations presented in
this report.
Site Conditions: The site was vacant and covered with a minor amount of snow at the
time of our field work. The ground surface on the lot is gently rolling with a gentle to
moderate slope down to the east. There is about 2 to 3 feet of elevation difference
across the building area. A drainage swale is located to the east of the building
envelope. Vegetation consists of grass and weeds.
Subsurface Conditions: The subsurface conditions at the site were evaluated by
excavating two exploratory pits at the approximate locations shown on Fig. 1. The logs
of the pits are presented on Fig. 2. The subsoils encountered, below about 1 foot of
topsoil, consist of stiff to very stiff sandy clay. Layers of basalt gravel in a sandy clay
matrix were encountered in Pit 2 and the Profile Pit between 5 and 6 feet. Results of
swell -consolidation testing performed on relatively undisturbed samples of the clay,
Jack Albright
May 16, 2001
Page 2
presented on Fig. 3, indicate low compressibility under existing moisture conditions and
light loading and a low to moderate expansion potential when wetted. Atterberg limits
testing shows the clay soils to have medium to high plasticity. The laboratory testing is
summarized on Table I. No free water was observed in the pits at the time of
excavation and the soils were moist.
Foundation Recommendations: Considering the subsoil conditions encountered in the
exploratory pits and the nature of the proposed construction, we recommend spread
footings placed on the undisturbed natural soil designed for an allowable soil bearing
pressure of 2,500 psf for support of the proposed residence. Due to the expansion
potential, the footings should also be sized for a minimum dead load pressure of 800
psf. The soils tend to expand after wetting and there could be some post -construction
foundation movement if the bearing soils become wetted. Precautions should be taken
to prevent wetting of the bearing soils. Footings should be a minimum width of
16 inches for continuous walls and 2 feet for columns. Loose and disturbed soils
encountered at the foundation bearing level within the excavation should be removed
and the footing bearing level extended down to the undisturbed natural soils. Exterior
footings should be provided with adequate cover above their bearing elevations for frost
protection. Placement of footings at least 42 inches below the exterior grade is typically
used in this area. , Continuous foundation walls should be reinforced top and bottom to
span local anomalies such as by assuming an unsupported length of at least 14 feet.
Foundation walls acting as retaining structures should be designed to resist a lateral
earth pressure based on an equivalent fluid unit weight of at least 55 pcf for the on -site
soil as backfill. A sliding coefficient of 0.30 and passive earth pressure of 300 pcf
equivalent fluid weight can be used to resist lateral loading on the foundation.
Floor Slabs: The on -site clay soils possess an expansion potential and slab heave could
occur if the subgrade soils were to become wet. Slab -on -grade construction may be
used provided precautions are taken to limit potential movement and the risk of distress
to the building is accepted by the owner. A positive way to reduce the risk of slab
movement, which is commonly used in the area, is to construct structurally supported
floors over crawlspace.
To reduce the effects of some differential movement, nonstructural floor slabs should be
separated from all bearing walls and columns with expansion joints which allow
unrestrained vertical movement. Interior non -bearing partitions resting on floor slabs
should be provided with a slip joint at the bottom of the wall so that, if the slab moves,
the movement cannot be transmitted to the upper structure. This detail is also important
for wallboards, stairways and door frames. Slip joints which will allow at least
11/2 inches of vertical movement are recommended: Floor slab control joints should be
used to reduce damage due to shrinkage cracking. Slab reinforcement and control joints
should be established by the designer based on experience and the intended slab use.
H-P GEOTECH
Jack Albright
May 16, 2001
Page 3
A minimum 4 inch layer of free -draining gravel should be placed immediately beneath
basement level slabs -on -grade. This material should consist of minus 2 inch aggregate
with less than 50% passing the No. 4 sieve and less than 2% passing the No. 200 sieve.
The free -draining gravel will aid in drainage below the slabs and should be connected
to the perimeter underdrain system.
Required fill beneath slabs should consist of a suitable imported granular material,
excluding topsoil and oversized rocks. The fill should be spread in thin horizontal lifts,
adjusted to at or above optimum moisture content, and compacted to at least 95 % of the
maximum standard Proctor density. All vegetation, topsoil and loose or disturbed soil
should be removed prior to fill placement.
The above recommendations will not prevent slab heave if the expansive soils
underlying slabs -on -grade become wet. However, the recommendations will reduce the
effects if slab heave occurs. All plumbing lines should be pressure tested before
backfilling to help reduce the potential for wetting.
Underdrain System: Although free water was not encountered during our exploration,
it has been our experience in the area and where clay soils are present that local perched
groundwater can develop during times of heavy precipitation or seasonal runoff.
Frozen ground during spring runoff can create a perched condition. We recommend
below -grade construction, such as retaining walls and basement areas, be protected
from wetting and hydrostatic pressure buildup by an underdrain system.
The drains should consist of drainpipe placed in the bottom of the wall backfill
surrounded above the invert level with free -draining granular material. The drain
should be placed at each level of excavation and at least 1 foot below lowest adjacent
finish grade and sloped at a minimum 1 % to a suitable gravity outlet. Free -draining
granular material used in the underdrain system should contain less than 2 % passing the
No. 200 sieve, less than 50% passing the No. 4 sieve and have a maximum size of
2 inches. The drain gravel backfill should be at least 11/a feet deep.
Surface Drainage: Positive surface drainage is important to prevent wetting of the
bearing soils below the building. The following drainage precautions should be
observed during construction and maintained at all times after the residence has been
completed:
1) Inundation of the foundation excavations and underslab areas should be
avoided during construction. Drying could increase the expansion
potential of the clay soils.
2) Exterior backfill should be adjusted to near optimum moisture and
compacted to at least 95 % of the maximum standard Proctor density in
pavement and slab areas and to at least 90 % of the maximum standard
Proctor density in landscape areas. Free -draining wall backfill should be
H-P GEOTECH
Jack Albright
May 16, 2001
Page 4
capped with about 2 feet of the on -site soils to reduce surface water
infiltration.
3) The ground surface surrounding the exterior of the building should be
sloped to drain away from the foundation in all directions. We
recommend a minimum slope of 12 inches in the first 10 feet in unpaved
areas and a minimum slope of 3 inches in the first 10 feet in pavement
and walkway areas.
4) Roof downspouts and drains should discharge well beyond the limits of
all backfill.
5) Landscaping which requires regular heavy irrigation, such as sod, should
be located at least 10 feet from the building. Consideration should be
given to the use of xeriscape to limit potential wetting of soils below the
foundation caused by irrigation.
Percolation Testing: Percolation tests were conducted on April 24, 2001 to evaluate
the feasibility of an infiltration septic disposal system at the site. One profile pit and
three percolation holes were dug at the locations shown on Fig. 1. The test holes
(nominal 12 inch diameter by 12 inch deep) were hand dug at the bottom of shallow
backhoe pits and were soaked with water one day prior to testing. The soils exposed in
the percolation holes are similar to those exposed in the Profile Pit shown on Fig: 2 and
consist of about 1 foot of topsoil overlying stiff to very stiff sandy clay to the pit depth
of 81/2 feet. A layer of basalt rock was encountered between 5 and 6 feet. The
percolation test results are presented in Table H. The percolation test results indicate an
infiltration rate between 24 and 60 minutes per inch with an average of 38 minutes per
inch. Based on the subsurface conditions encountered and the percolation test results,
the tested area should be suitable for a conventional infiltration septic disposal system.
Limitations: This study has been conducted in accordance with generally accepted
geotechnical engineering principles and practices in this area at this time. We make no
warranty either expressed or implied. The conclusions and recommendations submitted
in this report are based upon the data obtained from the exploratory pits excavated at the
locations indicated on Fig. 1 and to the depths shown on Fig. 2, the proposed type of
construction, and our experience in the area. Our findings include interpolation and
extrapolation of the subsurface conditions identified at the exploratory pits and
variations in the subsurface conditions may not become evident until excavation is
performed. If conditions encountered during construction appear different from those
described in this report, we should be notified at once so re-evaluation of the
recommendations may be made.
This report has been prepared for the exclusive use by our client for design purposes.
We are not responsible for technical interpretations by others of our information. As
the project evolves, we should provide continued consultation and field services during
construction to review and monitor the implementation of our recommendations, and to
H-P GEOTECH
Jack Albright
May 16, 2001
Page 5
verify that the recommendations have been appropriately interpreted. Significant design
changes may require additional analysis or modifications to the recommendations
presented herein. We recommend on -site observation of excavations and foundation
bearing strata and testing of structural fill by a representative of the geotechnical
engineer.
If you have any questions or if we may be of farther assistance, please let us know.
Sincerely,
HEPWORTH - PAWLAK
Jordy Z. Adamso , Jr.,
Reviewed by:
Steven L. Pawlak, P.E.
attachments
.�NI,A
CI
29707 �, 3
x; :.,, g17i01
SVONAL E
INC.
cc: Sopris Engineering - Attn: Paul Rutledge
Timberland Development - Attn: Mike Steel
H-P GEOTECH
GREEN MEADOW DRIVE
7122
7120 \
APPROXIMATE SCALE
1 " = 40'
\ 7122
PIT 1
7118 i ~ PROPOSED 1 "- 7120
RESIDENCE
PIT 2 7118
7116 P_
BUILDING Q
ENVELOPE P-3Q
7116 _ \ \
-.. � PROF'IL
- ` PIT Q
_ P-1
UTILITY _
EASEMENT 7118 - -- - - /
DRAINAGE
7120
'~ SWALE
\ 7118
\ 7120
101 250 GEOWEORTH-PAWINC. I LOCATION OF EXPLORATORY PITS Fig. 1 I
PIT 1 PIT 2 PROFILE PIT
ELEV.= 7120' ELEV.= 7118' ELEV.= 7117'
0 0
WC=21.1
DD=101
-200=88
LL=43
PI=26
5 We=17.5 5
,o DD=104
WC=14.6
DD=102
1 10 10
LEGEND:
TOPSOIL; sandy silty clay, organic, firm, moist, black.
F1CLAY (CL); sandy, stiff to very stiff, moist, light reddish brown to brown, medium to high
plasticity.
GRAVEL AND CLAY (GC—CL); sandy, very stiff to dense, moist, reddish brown, calcareous,
fragments of basalt.
2" Diameter hand driven liner sample.
_
Disturbed bulk sample.
J
M
1. Exploratory pits were excavated on April 23, 2001 with a Cat 416 backhoe.
4-1
ai
I
a
a)
0
2. Locations of exploratory pits were measured approximately by pacing from features on the site plan
provided.
3. Elevations of the exploratory pits were obtained by interpolation between contours on the site plan
provided. Logs are drawn to depth.
4. The exploratory pit locations and elevations should be considered accurate only to the degree implied
by the method used.
5. The lines between materials shown on the exploratory pit logs represent the approximate boundaries
between material types and transitions may be gradual.
6. No free water was encountered in the pits at the time of excavating. Fluctuations in water level may
occur with time.
7. Laboratory Testing Results:
WC = Water Content ( % )
DD = Dry Density ( pcf )
—200 = Percent passing No. 200 sieve
LL = Liquid Limit ( % )
PI = Plasticity Index ( % )
101 250 HEPWORTH—PAWLAK LOGS OF EXPLORATORY PITS Fig. 2
GEOTECHNICAL, INC.
b\
c
0
c
a
a
x
w
1
0
c
0
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1
L
n
E
0
U
2
3
0.1
1.0
10
100
APPLIED
PRESSURE — ksf
2
No
c
o_
c
0
a
x
w
1
0
c
Cn
1
a
E
0
v
2
3
0.1
1.0
10
100
APPLIED
PRESSURE — ksf
101
250
HEPWORTH—PAWLAK
SWELL CONSOLIDATION TEST
RESULTS
Fig. 3
GEOTECHNICAL, INC.
Moisture Content = 14.6 percent
Dry Density = 1 D2 pcf
Sample of: Sandy Clay
From:Pit 1 at 6 Feet
Expansion
upon
wetting
Moisture Content = 17.5 percent
Dry Density = 104 pcf
Sample of: Sandy Clay
From: Pit 2 at 4 Feet
Expansion
upon
wetting
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HEPWORTH-PAWLAK GEOTECHNICAL, INC.
TABLE 11
rr-nk.VLH i IVIM I t%> I KtOUL I b JULS
NU. 1U1 25(
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
(MINJINCH)
P-1
43
15
water added
8 '/2
7 '/2
1
30
7 '/2
6 %
%
6 %
6 '/4
'/2
6 A
5 %2
%
5 %2
5
%2
5
4 A
%
8 %2
8
'/2
8
7 '/2
%2
P-2
45
15
10 '/2
9 '/2
1
24
9 '/2
9
%2
9
8 '/4
%
8 '/4
7 %
'/2
7 %
7
%
7
6 %2
'/2
6 %
5 %
%
5 %
5 '/4
%2
P-3
52
30
8
7
1
60
7
6 %2
%2
6 %2
6
'/2
6
5 '/2
'/z
Note: Percolation test holes were hand dug in the bottom of backhoe pits and soaked on April
23, 2001. Percolation tests were conducted on April 24, 2001. The average percolation
rates were based on the last two readings of each test.
� ppwl rye:
PERCOLATION TEST
EAGLE COUNTY ENVIRONMENTAL HEATLH
OWNER: € C A � J�
-PHSYSICAL ADDRESS: <''re n (.cs) 'D r
LEGAL DESCRIPTION: I U 1
MAILING ADDRESS:
TYPE OF DWELLING: NUMBER OF BEDROOMS:
TEST HOLES PRE-SOAKED: YES _ NO _
SOIL
TIME WATER DEPTH INCHES OF FALL RATE PROFILE
(ir
1' w
21
r
4►
5'
clol
6'
71
gr
91
7.
1 i
TIME TO DROP LAST INCH: PERC RATE:
MINIMUM LEACH FIELD SIZE: MINIMUM SEPTIC TANK SIZE:
NMENTAL HEALTH SPECIALIST
'41_- ,0 /
DATE
_4_
\/Vp ���\�y��• - V LU � JUtJi15 1'1CJcl t llnD-LVn1 JOB NO 1320 Green Meadow Drive
Carbondale
JOB LOCATION
BILL TO
DATE,STARJED
DATE COMPLETED
i—DATE BILLED
1
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TOTAL JOB COST
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GROSS PROFIT
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JOB FOLDER Product 278 V
c�J-P/Z JOB FOLDER Printed In
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z6ENERAL LOCATION
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EN�LOPE S 75 50, 0 42» E
FU
GARAGE
S76 21'FUTU
p3
�� NE BEDR OM WAGE
' j + T. SLAB / 0 4O'
71 t 9.0
Ohl OM HOUSE / , 22� 732 F 47 ,
TWO—WAY \ / —4' DIA. SOLID PVC HEADER PIPE
SCHEDULE 40 (TYP.)
CLEANOUTS
J / I / N84' 03"E S88'16'46 "E Q- / �37' / NSPECTION PORT (TYP.) '
/
168.78' ABSORPTION TRENeHES ARE
/ +7113 / � MARKED WfTH CLEANOUTS
AND/OR YARD BOXES
6' USE 72 INFILTRATOR CHAMBERS IN 5 ROWS. A
143 34,E TOTAL OF 1125 SQ. FT. OF AREA IS PROVIDED.RA_ —
LOCATION OF TRENCHES IS WITHIN THE GENERAL
-- - -- - ^ -- - -- - - - �/ -- -- --
/ 1-SHOWN AND -MEET ALLONTtSETBACK
,s �bCAT1ON - - -
- SYSTEM IS PLUMBED FOR SERIAL
-
I ALLED 200 GAL SEPTIC TANK OQ / REQUIREMENTS. THE
INS LIED A D PUMP VAULT —DISTRIBUTION. THE CHAMBERS IN EACH TRENCH WERE
INSTALLED AT LEVEL GRADE. THE BOTTOM ELEVATION
DOSI ASSEMB Y W/,EFFL.UENT w�"erg 6�26
OF EACH TRENCH VARIES TO A MAXIMUM DEPTH OF
\ / FL
I THE T NK'S SECONDARY uo\�� j�`L^ 4, p 0� f o 2" DIA. SCH 40 PER FORATEDIDISTRIBUTION 36 INCHES BELOW THE FINISHED GRADE.
A ER. —
CHTHE OSING VOLUME
/ SHALL IS N 150 GALLONS. S % � LATERAL (PRESSURIZEt)) PIPE INSTALLED AT
\INSTA D AN 0) SYSTEMS / / THE TOP _OF THE CHAMBERS TO THE END OF
o B10- E PUMP VANJ SYSTEM / // THE -TERMINAL END CHAMBER. INSTALLED A 2"
WITH A DRAIN AC STEM j / / PLASTIC BALL VALVE AT THE END OF THE f
PRESSURE PIPE OPERATIONAL FROM AN
ADDITIONAL 4" INSPECTION PORT.
ORENTED 1" DIA. OR -S
\ ,1TOP
ro- \ �-\ / OFI CHAMBER4INTERIOR UPWARDOOFFRAY CENTER.
sr. � Lk9 ��
e, PRESSURE PIPE
TRANSPORT LINE MNIMUM /
MAINTAINED A MINIWt M DEPTH OF
= O COVER OF 3 FEET OVER TRANSPORT
G / LINE ,WITH A MINIMUM 2% SLOPE — - - —
\ GRADED TO ALLOW THE LINE TO LOT 16
� DRAIN EFFLUENT BACK'TO THE TANK. �
THE DISTRIBUTION INERT AT THE INLET �
NSTALLED A ACCESS RISERS OVER SEPTIC OF THE PROPOSED` TRENCH IS
TANK ACCESS OPENINGS FOR ACCESS TO PUMP APPROXIMATELY 6' HIGHER THAN THE
ASSEMBLY VAULT AND PRIkJARY CHAMBER. INVERT AT THE SEPTIC TANK OUTLET. /
ALL RISERS HAVE APPROPRIATE INSULATED ;
LIDS. DEPTH TO TO"F TANK FROM
PROPOSED GRADE IS APPROXIMATLEY
0
GRAPHIC SCALE
20 0 10 20 40 80
\ ( IN FEET )
1 inch = 20 ft. �
NOTE:
EACH RUN OF CHAMBERS MUST BE LEVEL. INLET AND END CAP TO BE
USED ON EACH END CHAMBER. INSTALL 4" PVC INSPECTION PORT W/ CAP
ON SERIAL END CHAMBER OF EACH TRENCH. MAINTAIN 6' OF UNDISTURBED
SOIL BETWEEN TRENCHES. THE TRENCH BOTTOM ELEVATION OF ADJACENT
TRENCHES MAY VARY. MAXIMUM DEPTH OF TRENCH BOTTOM SHALL NOT
EXCEED 36 INCHES. A 2" SCH 40 PERFORATED PRESSURE PIPE W/1 /4"
ORIFICES SHALL BE INSTALLED AT THE TOP OF THE FIRST SERIAL ROW OF
CHAMBERS TO INSURE EQUAL DISTRIBUTION OF EFFLUENT ALONG THE
TRENCH. MAXIMUM SPACING OF ORIFICES SHALL NOT EXCEED 4'. INSTALL
A BALL VALVE AT THE END OF THE DISTRIBUTION LINE ACCESSIBLE FROM
THE INSPECTION PORT TO ALLOW FLUSHING OF THE LINE. HEADER PIPE EXISTING GRADE
CROWN FIELD TRENCH TO
PROPOSED GRADE
DIVERT SURFACE WATER LEACHING CHAMBER MAIN LEVEL FINISH FLOOR
REVEGATATION 3' MIN ► 6' MIN ACCESS RISERS
TOPSOIL LAYER
PROPOSED BUILDING
X 4"-12"
12"_ »
PERVIOUS MEMEBRANE LAYER x MIN. MAX.
LOWER LEVEL FINISH FLOOR
NON -WOVEN FILTER FABRIC -
\\ \\ \\
ABSORPTION TRENCHES DOSING PUMP/FILTER
ASSEMBLY VAULT
SCREENED BACKFILL LAYER �?
NATURAL ONSITE SOILS FREE 12"
OF GRAVEL AND ROCKS IN
EXCESS OF 2 1 /2" DIAMETER
a : EFFLUENT DRAIN LINE
J , AT MINIMUM 1 % SLOPE
STADARD CAPACITY 0 WAY CLEAN OUT
INFILTRATOR CHAMBER (TYP.)\����i� `\\ PRESSURE PIPE
TRANSPORT LINE
SCARIFY/TILL BOTTOM SURFACE TO AT MINIMUM 2% SLOPE SEPTIC TANK
A DEPTH OF 3" AND RAKE LEVEL UNDISTURBED SOIL
PERFORATED DISTRIBUTION PIPE
FIRST SERIAL TRENCH ONLY
CROSS SECTION SYSTEM DETAIL
INFILTRATOR CROSS SECTION DETAIL N.T.S.
NTS
21050.01 AB-ISDS-SlTE3.DWG 5/17/01
ISDS SYST—_-EW NOTES
1. ADD P, TWO—WAY CLEAN OUT ON THE SERVICE LINE FROM THE HOUSE.
2. ALL M,- ATERIALS AND INSTALLATION SHALL CONFORM TO EAGLE COUNTY
INDIVIhIJAL SEWAGE DISPOSAL SYSTEM (ISDS) REGULATIONS.
3. ' ALL !S=°*AdER LINES TO BE SDR-35 OF SC61EDULE 40. Q.V.C. PIPE. UNLESS
NOTE OYHERWISE. '
4. THE =D'NTRACTOR SHALL ENSURE ALL SEWER LINES AND SEPTIC TANKS
ARE VONATERTIGHT. ANY POTENTIAL PLUMBING LEAKS SHALL BE
REPAIEFRED TO AVOID EXCESSIVE WATER ENTERING THE SEPTIC SYSTEM.
5. IT IS —THE RESPONSIBILITY OF THE CONTRACTOR TO CONTACT ALL
UTILIT—Y COMPANIES FOR FIND LOCATIONS OF UTILITIES PRIOR TO
CONS—TRUCTION AND EXCAVATION.
6. THE A —SORPTION TRENCHES MUST BE MARKED AND PROTECTED TO
PREVENT DAMAGE FROM VBNCULAR AND LIVESTOCK TRAFFIC.
7. THE T---AINK SHALL BE INSTALLED LEVEL ON COMPACTED EARTH. INSTALL
WATERTIGHT RISERS AS NECESSARY TO BRING ALL REQUIRED ACCESS
POINTS TO WITHIN 8 INCHES OF THE FINISHED SURFACE GRADE. I
INSTA—_i L THE INLET AND OUTLET TEES TO BE EASILY INSPECTED AND
LIDS., .
8. AN EF=FLUENT PUMP ASSEMILY WITH FILTER SHALL BE INSTALLED IN
THE SECONDARY COMPARTi"T OF THE SEPTIC TANK. THE DUAL # `
DOSIN•NG PUMP ASSEMBLY AND FILTER SHALL BE MAINTAINED WHEN -;
THE -A.NK IS PUMPED OR A5 NEEDED. INSTALL SUITABLE COMPONENT
EXTDSIONS ON THE PUMP AND FILTER ASSEMBLIES TO BE WITHIN €
6" BF=lOW THE ACCESS LID_ WE RECOMMEND A PERIODIC INSPECTION P
AND MAINTENANCE PROCEDURE BE PERFORMED EVERY 6 MONTHS.
8. THE ENTIRE ABSORPTION TRENCH SURFACE MUST BE SODDED OR
RE —VEGETATED WITH GROLMD COVER.
9. THE A- SORPTION TRENCH SURFACES MUST BE CROWNED TO DIVERT
SURF: -ACE DRAINAGE AWAY FROM THE TRENCHES. €
10. THE Ei]MIENSIONS SHOWN ON THE PLAN INDICATE MINIMUM AREA AND
SEPARATION DISTANCES FOR THE TRENCHES.
11. EACI= TRENCH SHALL BE LEVEL AND CONNECTED FOR SERIAL
DIST>T'1BUTION. THE MAXIMUM DEPTH OF ANY TRENCH SHALL
NOT =XCEED 36".
12. THE CONTRACTOR SHALL NOT EXCAVATE TO A DEPTH GREATER THAN 3
FEET AT ANY ONE LOCATION WITHIN THE SITE OF THE PROPOSED
ABSORPTION CHAMBER TREMCH. THE MINIMUM COVER OVER THE TOP OF 6
THE -ABSORPTION TRENCH SMALL BE 12 INCHES NOT TO EXCEED 24".
t
13. THE 777RENCH CHAMBERS WILL BE BACKFILLED WITH EXCAVATED MATERIAL
VOID OF ROCKS, THE BACKFILL MATERIAL SHALL NOT EXCEED 2 1/2"
DIAM:= TER AND SHALL BE PLACED TO AT LEAST 6 INCHES ABOVE THE
TOP OF THE CHAMBERS. T11E TOP OF THE PLACED BACKFILL SHALL BE
COVERED WITH A LAYER OF FILTER FABRIC. A MINIMUM 4" DEPTH OF
TOPc—,-7IL IS TO BE PLACED ABOVE THE BACKFILL TO THE SURFACE. THE
TREN.vH BOTTOM SHALL BE SCARIFIED IF SMEARING OCCURS.
14. VERTI :AL INSPECTION PORTS SHALL BE INSTALLED FROM THE CENTER
PRE —MARKED HOLE ON THE TOP OF THE SERIAL END CHAMBERS. (TYP_
END OF EACH ROW) A SPLASH PLATE SHALL BE INS BALLED ON THE
TREt* CH BOTTOM BELOW EACH TRENCH INLET TO PREVENT SCOURING.
15. ALL I''NSTALLATION OF TRENCH CHAMBERS SHALL BE IN CONFORMANCE
WITH THE MANUFACTURES INSTALLA11ON INSTRUCTIONS.
16. THE DUAL PUMP DOSING ASSEMBLY SHALL INSTALLED IN CONFORMANCE
WITH THE MANUFACTURERS INSTALLATION GUIDELINES. THE DOSING
SYS_ =M SHALL BE EQUIPPED WITH AUTOMATIC CONTROLS WITH A HIGH
WATER FLOAT AND ALARM. THE CONTROLS SHALL PROVIDE FOR
ALTERNATE OPERATION OF EACH PUMP. THE PRESSURIZED PIPE FROM
THE DOSING SYSTEM TO THE. TRENCHES SHALL BE SCH 40 PVC. THE
DOSING PUMP SHALL BE DESIGNED TO MAINTAIN A MINIMUM VELOCITY
IN THE LINE OF 4 FT/SEC.
GENERAL 'NOTES:
1. THE SDS SYSTEM AS SHOM ON THE PLAN AND THE DETAILS WERE
DESI Z3NED BY SOPRIS ENGINEERING. THE PROPOSED HOUSE, DRIVEWAY
AND PROPOSED CONTOURS WAS PROVIDED BY THE OWNER. THE
EXISTING LOT CONDITION AMD SURVEY INFORMATION WAS PROVIDED BY
HIGI- COUNTRY ENGINEERING, INC.
2. THE CONTOUR INTERVAL ON THIS MAP IS 2 FEET.
RECEIVED
ENVIRONMENTAL
HEALTH DEPARTMENT
t3/ ` � N0. DAT REVISION BY
,+ ° �+ ALBRICHT RESIDENCE, LOT 16, SOPRIS MESA
ttlIr,� MIOURI HEIGHTS, EAGLE COUNTY, COLORADO
AS -BUILT ALBRIGHT ISDS SYSTEM
IVIDUAL SEWAGE DISPOSAL SYSTEM
SYSTEM AND DETAILS
OPRIS E NCINEERINC, LLC.
VIL CONSULTANT
502 MAIN STREET, SUITE A3 DES_ YTN CK FILE NO. SHEET I
CARBONDALE, CO 81623
(970) 704-0311 DR. PER DATE 811102 21050.01 OF 1