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HomeMy WebLinkAbout177 Stephens Dr - 211305206005Environmental Health
Department
P.O. Box 179
500 Broadway
Eagle, CO 81631-0179
Phone: (970)328-8755
Fax: (970)328-8788
EAGLE COUNTY
177 STEPHENS DRIVE , CO
Manuel Nieto
owner
Address
CO
Contractor(s) License Number Phone Primary Contractor
JC Construction & Excavation (970)328-0394 Yes
LKP ENGINEERING (970)926-9088 No
Parcel No.
211305206005
Phone: (323)363-3489
Cell:
Inspections:
For Inspections call (970) 328-8755
Inspection IVR
Permitted Construction / Details:
System consists of a 1500 gallon tank & 1500 feet of absorption credit via 75 Q4 Infiltrators as specified
on the engineer design stamped & dated 3-28-08.
Special condition: Require the engineer to verify percolation rate prior to installation
CONDITIONS:
Office Copy
1. THIS PERMIT EXPIRES BY TIME LIMITATION AND BECOMES NULL AND VOID IF THE WORK AUTHORIZED BY THE PERMIT IS NOT
COMMENCED WITHIN 120 DAYS OF ISSUANCE, OR BEFORE THE EXPIRATION OF AN ASSOCIATED BUILDING PERMIT
2. ALL INSTALLATIONS MUST COMPLY WITH ALL REQUIREMENTS OF THE EAGLE COUNTY INDIVIDUAL SEWAGE DISPOSAL SYSTEM
REGULATIONS ADOPTED PURSUANT TO AUTHORITY GRANTED IN CR.S. 25-10-101, et seq., AS AMENDED
3. 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 PERMITAND WILL RESULT IN
BOTH LEGAL ACTION AND REVOCATION OF THE PERMIT
4. CHAPTER IV, SECTION 4.03.29 REQUIRES ANY PERSON WHO CONSTRUCTS, ALTERS OR INSTALLS AN INDIVIDUAL SEWAGE DISPOSAL
SYSTEM TO BE LICENSED
Terri Vroman June 17, 2008
Issued y: Environmental eat Department, Eagle County, CO Date
Department of
Environmental Health
Eagle (970) 328-8755
Fax: (970) 328-8788
El Jebel (970) 704-2700
TOLL FREE: 800-225-6136
EAGLE COUNTY
P.O. Box 179
500 Broadway
Eagle, CO 81631
www.eaglecounty.us
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APPLICATION FOR INDIVIDUAL SEWAGE DISPOSAL SYSTEM PERMIT
ISDS Permit # 5k I G -�� -; 7- Building Permit #
INCOMPLETE APPLICATIONS WILL NOT BE ACCEPTED (SITE PLAN MUST BE INCLUDED)
FEE SCHEDULE
APPLICATION FEE $373.00
This fee includes the ISDS Permit, Site Evaluation (Percolation Test, or Soil Profile Observation) and
Final Inspection. Additional fees may be charged if a re -inspection is necessary, or a pre -construct
site visit or consultation is needed. The re -inspection fee is $55.00.
Make all remittance payable to: Eagle County Treasurer.
Property Owner: Qanu) Phone:(3 3 ��
Mailing Address: �. (86-os 4van Cc g 1 G S
Chr i 5
Applicant/Contact Person: Chris of �, o®se
se, Phone: q _a
Licensed Systems Contractor: License #
Company/DBA: Phone:
Mailing Address:
Permit Application is for: XNew Installation r Alteration r Repair
Location of Proposed Individual Sewage Disposal System: , LD4 •4WQ P->oe y's
Legal Description:
Tax Parcel Number:�1; (� , Lot Size:
Assessor's Link: www.eacjlecounty.us/pat[eZ
Physical Address: +_+ S+eph 05' Drive, le 6gorl�
Building Type: ( Residential/Single Family Number of Bedrooms:
v
r- Residential/Multi Family Number of Bedrooms:
r Commercial/Industrial* Type of Use:
*These systems require design by a Registered Professional Engineer
Type of Water Supply: (- Private Well
If Public Name of Supplier :
Applicant Signature :
Office Use Only
r Spring
r Surface
Amount Paid: 3`�� Receipt#: � Check#: z�
Public
Date: ji ��,
DEPARTMENT OF
ENVIRONMENTAL HEALTH
(970) 328-8755
FAX: (970) 328-8788
TOLL FREE: 800-225-6I36
www.eagle-county.com
EAGLE COUNTY
June 17, 2008
JC Construction & Excavation
PO Box 4558
Avon, CO 81620
RAYMOND P. MERRY, REHS
Director
RE: Issuance of Individual Sewage Disposal System (ISDS) Permit #2663-07, Tax Parcel #211305206005
Property Location: 177 Stephens Drive
Dear Hector,
Please find enclosed ISDS permit, 2663-07 to conduct the construction exactly as indicated on the engineer design signed,
stamped, & dated 3-28-08 as well as pay close attention to any special conditions of the permit . It remains valid for 120 days or
for the duration of a current building permit. The enclosed copy of the permit must be posted at the installation site. Any
changes in plans or specifications must be pre -approved by this department. If you are receiving this permit and have not been
contracted to perform the installation, please contact us immediately.
Also enclosed is a final inspection completeness check list to assist you in making sure all of the detailed points of an inspection
have been properly addressed before calling for your final inspection. It is important to pay close attention to the special
conditions which may have been included to address site specific issues. All components of the system must be exposed
for our inspection. Projects that require multiple inspections will be assessed a re -inspection fee of $55.00 payable before or at
the time of inspection. It is extremely important to remember to rake all infiltrative surfaces and avoid installing systems in wet
or frozen ground.
In addition to avoiding installations during unfavorable site conditions, please be advised of our annual time frame for
ISDS installations, unless otherwise specifically approved by this department. Permits issued on or before November 15
must be installed prior to December 1. Spring field activities typically resume around mid March. Avoiding the winter
months promotes better site evaluations, designs and installations resulting in the best private wastewater system for our
customers. If unfavorable conditions prevail between the installation and the final inspection (such as snow) special
precautions must be taken to protect the drain field area from the elements.
Please keep this office informed regarding the progress of your installation so we can provide responsive customer service when
scheduling your final inspection. The Temporary Occupancy Permit (TCO) associated with the building permit cannot be issued
without the septic system being finally inspected. Systems designed by a registered professional engineer must be inspected and
certified by the design engineer as well as Eagle County Environmental Health.
If you have any questions, please feel free to contact us at (970) 328-8755.
Sincerely,
Terri Vroman, Administrative Technician IV
cc: electronic permit folder
electronic chronological file
hard copy permit file
LKP Engineering
Enclosures: ISDS Permit # 2663-07
Final Inspection Completeness Checklist
Engineer design
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OLD COURTHOUSE BUILDING, 551 Broadway, P.O. Box 179, Eagle, Colorado 81631-0179
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HEPWORTH-PAWLAK GEOTECHNICAL
July 17, 2007
Hepworth-Pawlak Geotechnical, Inc.
5020 County Road 154
Glenv.00d Sprin Colorado 81601
Phone:970-!45-7988
Fax: 9 70-945-8454
email: hpaeoGhpgeotech.com
Jose DeJesus Rojas
P. O. Box 8605
Avon, Colorado 81620
Job No. 107 0406
Subject: Subsoil Study for Foundation Design, Proposed Nieto Residence, Lot 2,
Two Rivers Estates, 177 Stephens Drive, Eagle County, Colorado
Dear Mr. Rojas:
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 May 23, 2007. The data
obtained and our recommendations based on the proposed construction and subsurface
conditions encountered are presented in this report. We previously performed a
preliminary subsoil study for the subdivision development, submitting our findings in a
report dated February 20, 1998, Job No. 197 264.
Proposed Construction: The residence will be a 1 and 2 story wood frame structure
over a walkout basement level located in the building envelop of the lot shown or, Figure
1. Ground floors will be slab -on -grade. Cut depths are expected to range between about
3 to 8 feet. Foundation loadings for this type of construction are assumed to be relatively
light and typical of the proposed type of construction.
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 lot is vacant and located on generally southerly sloping hilly
terrain above Stephens Drive. The ground surface is moderately steep with grades
estimated at about 20 to 30% in the assumed building area. There is a shallow dry
Parker 303-841-7119 0 Colorado Springs 719-633-5562 0 Silverthorne 970-468-1989
-2-
drainage through the western part of the lot and a deep gully along the east side of the lot.
Vegetation consists of sage brush and juniper trees with grass and weeds.
Subsidence Potential: Two Rivers Estates is underlain by Pennsylvania Age Eagle
Valley Evaporite bedrock. The evaporite contains gypsum deposits. Dissolution of the
gypsum under certain conditions can cause sinkholes to develop and can produce areas of
localized subsidence. During previous work in the area, sinkholes were observed in other
nearby areas of the Eagle River valley. Sinkholes were not observed in the immediate
area of the subject lot. Our exploratory pits were relatively shallow and for foundation
design only. Based on our present knowledge of the site, it cannot be said for certain that
sinkholes will not develop. In our opinion, the risk of ground subsidence at Lot 2 is low
and similar to other lots in the area but the owner should be aware of the potential for
sinkhole development.
Subsurface Conditions: The subsurface conditions at the site were evaluated by
excavating two exploratory pits at the approximate locations shown on Figure 1. The
logs of the pits are presented on Figure 2. The subsoils encountered, below about '/2 foot
of topsoil, consisted of stiff, very silty and occasionally clayey sand with shale fragments
that extended to the pit depths of 6 and 8 feet. Results of swell -consolidation testing
performed on relatively undisturbed samples ofvery silty sand soils presented on Figures
3 and 4, indicate low compressibility under existing moisture conditions and light loading
and a moderate to high collapse potential (settlement under a constant 1,000 psf
surcharge) when wetted. The samples showed moderate to high compressibility when
loaded after wetting. No free water was observed in the pits at the time of excavation and
the soils were slightly moist.
Foundation Recommendations: Considering the subsoil conditions encountered in the
exploratory pits and the nature of the proposed construction, spread footings placed on the
undisturbed natural soil designed for an allowable bearing pressure of 1,000 psf can be
used for support of the proposed residence with a risk of settlement. The soils tend to
compress after wetting under load and there could be post -construction foundation
settlement on the order of 1 to 2 inches or more depending on the depth and extent of the
Job No. 107 0406
G(�S'tec!'h
-3-
wetting. Precautions, such as positive surface drainage away from foundation wails and
adequate compaction of foundation wall backfill, should be taken to help prevent wetting
of the bearing soils. Extending the bearing level down to formation rock such as with
drilled piers or piles could be used to reduce the settlement risk.
Footings should be a minimum width of 20 inches for continuous walls and 2 feet for
columns. All topsoil and loose or disturbed soils encountered at the foundation bearing
level within the excavation should be removed and the footing bearing level extended
down to the undisturbed firm natural soils. The footing subgrade should then be
moistened and compacted. 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 should be adequate for this area of Eagle County.
Continuous foundation walls should be heavily reinforced top and bottom to span local
anomalies and better withstand the effects of some differential settlement such as by
assuming an unsupported length of at least 15 feet. Foundation walls acting as retaining
structures should also be designed to resist a lateral earth pressure based on an equivalent
fluid unit weight of at least 50 pcf for the on -site soil, excluding topsoil and oversized
rocks, as backf Il.
Floor Slabs: The natural on -site soils, exclusive of topsoil, are suitable to support lightly
loaded slab -on -grade construction. There could be some slab settlement if the subgrade
becomes wetted as discussed above. To reduce the effects of some differential
movement, floor slabs should be separated from all bearing walls and columns with
expansion joints which allow unrestrained vertical movement. Floor slab control joints
should be used to reduce damage due to shrinkage cracking. The requirements for joint
spacing and slab reinforcement should be established by the designer based on experience
and the intended slab use. A minimum 4 inch layer of free -draining gravel should be
placed beneath basement level slabs to facilitate drainage. 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.
Job No. 107 0406
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All fill materials for support of boor slabs should be compacted to at least 95% of
maximum standard Proctor density at a moisture content near optimum. Required fill can
consist of the on -site soils devoid of topsoil and oversized rocks.
Underdrain System: Although free water was not encountered during our exploration, it
has been our experience in the area and where clayey soils are present that local perched
groundwater can develop during times of heavy precipitation or seasonal runoff. Frozen
ground during spring runoff can also 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 1'/2 feet deep. An impervious membrane such as
30 mil PVC should be placed beneath the drain gravel in a trough shape and attached to
the foundation wall with mastic to prevent wetting of the bearing soils.
Surface Drainage: Positive surface drainage is an important aspect of the project to
prevent wetting of the bearing soils. 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.
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.
Job No. 107 0406
-5-
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, and
sprinkler heads 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.
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 express 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 Figure I and to the depths shown on Figure 2, the proposed type of
construction, and our experience in the area. Our services do not include determining the
presence, prevention or possibility of mold or other biological contaminants (MOBC)
developing in the future. If the client is concerned about MOBC, then a professional in
this special field of practice should be consulted. 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
verify that the recommendations have been appropriately interpreted. Significant design
Job No. 107 0406
Ce'!Stech
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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 further assistance, please let us know.
Respectfully Submitted,
HEPWORTH -
David A. Young, P.E.
Reviewed by:
Z! �Z' -, � -'; te - 1, 06, " �
Steven L. Pa lak, P.E.
DAY/vad
ICAL, INC.
attachments Figure 1, Location of Exploratory Pits
Figure 2, Logs of Exploratory Pits
Figures 3 and 4, Swell -Consolidation Test Results
Job No. 107 0406
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PIT 1 PIT 2
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5 WC=5.7
DD=89 WC=6.1 5
QQ DD=95
--
1 10 10
LEGEND:
NTOPSOIL; organic sandy clayey silt, slightly moist, brown.
SAND (SM-ML); very silty, occasionally clayey, scattered shale fragments, stiff, slightly moist, light brown.
2" Diameter hand driven liner sample.
Disturbed bulk sample.
_ J
NOTES:
1. Exploratory pits were excavated on May 25, 2007 with a backhoe.
2. Locations of exploratory pits were measured approximately by pacing from features shown on the site plan
provided.
3. Elevations of exploratory pits were not measured and the logs of exploratory pits are drawn to depth.
4. The exploratory pit locations 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. Fluctuation in water level may occur with time.
7. Laboratory Testing Results:
WC = Water Content (%)
DD = Dry Density (pcf)
I 1070406 � I Geed LOGS OF EXPLORATORY PITS Figure 2
HEPWORTH-PAWLAK GEoTECHmCAL
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Moisture Content = 5.7 percent
Dry Density = 89 pcf
Sample of: Very Silty Clayey Sand
From: Pit 1 at 4 Feet
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Compression
upon
2 wetting
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APPLIED PRESSURE - ksf
1070406 He )H [h SWELL -CONSOLIDATION TEST RESULTS Figure 3
worth—Powlok GeotEchnical
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Moisture Content = 6.1 percent
Dry Density = 95 pcf
Sample of: Very Silty Sand
From: Pit 2 at 4Y2 Feet
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8 wetting
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16
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APPLIED PRESSURE - ksf
1070406 GgRedh SWELL-CONSOLEUATION TEST RESULTS Figure 4
HEPWORTH-PAWLAK GEOTECHNicAL
PROJECT 177 s hens i R-1 ve-
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