HomeMy WebLinkAbout1.0 ApplicationCATTLE CREEK RANCH
PLANNED UNIT DEVELOPMENT
PRELIMINARY PLAN
OWN ER
Mr. Frank Lerner
Aspen, Colorado
DESIGN TEAM
Planning and Project Coordination
The Land tD�:sign Partnershlp
Glenwood Springs, Colorado
Civil Engineering
Eldorado Engineering Company
Glenwood Springs, Colorado
Hydrology
Wright Water Engineers, Inc.
Glenwood Springs, Colorado
Soils and Geology
Chen and Associates
Glenwood Springs, Colorado
DATE
25 May 1979
tlay 25, 1979
Board of County Commiss
Garfield County
P.O. Box 640
Glenwood Springs, CO 8
RE: Cattle Creek Ranch
Phase 1 and Phase
Gentlemen:
Toners
1601
P.U.D. - Preliminary Plan
1I
Submitted herewith are documents and maps for Preliminary Plan -
Approval for Phase I and Phase I1 of Cattle Creek Ranch P.U.D.
The property is presently in the ownership of Cattle Creek Ranch
Ventures.
The enclosed information has bean a :par_:d by Eldorado Encjinehr-'
Company, The Land Oesign Partnership, Wright -water Engineers ani
Chen and Associates. This submittal is in conformance to the P.U.D.
application previously approved by Garfield County.
If additional i nforntati
on or documentation is required at this time
we will cooperate fully with you and your planning staff.
Very truly yours,
yvidlif?
ank Lerner
LEGAL DE CI::i_Pi.IC)I:
T OF r ,S . 13ANDTHE
ST
THE S 1/2 THE ?i:; 1; �� AND LOTS 7, 8, 12 AND .L III'; 1'E 29.7
FEET
� , i r r'r A ',:•r'
ACRES OF LOT 14 AND THE WEST 980.:10 OF LOT 15, EXCEPT PORTION
01. A TRACT CONVEYED BY DEED RECORDED IN BOD:: 61 AT PAGE 553
AND
EXCEPT THAT PORTION OF LOT7 IYIi:C SOUTHEASTERLY O' THE RIGHT—OF—WAY
OF AN EXISTING COUNTY ROAD (P,=113), ALL IN SECTION 5; AND SE 1/4
SE 1/4, SECTION 6 EXCEPT A PORTION OF THAT S ," TRACT CONEYED BY
DEED RECORDED IN BOOK 61 AT PAGE 553; AND SE 1/4 NE 1/4, SECTION 7;
AND ALL OF SECTION 8 EXCEPT A PARCEL 0? LAND DESCRIBED AS FOLLOWS:
.
BEGINNING
AT THE NORTHEAST
ORT liASrCO:NER SAID SECTION
8;
THENCE S 89°56146.2" W. , 1., 641. 369' , ALONG THE NORTII LIIIE
SAID SECTION 8; THENCE S 00°17' 48" E., 35.37; THENCE
N 89e56'46.2:' E. AND PARALLEL TO THE NORTII LINE SAID
SECTION 8, 1,64:1.746; THENCE N 00°54123" W., 35.37` TO
THE POINT OF BEGINNING, CONTAINING 1.333 ACRES MORE OR
LESS,
ALL IN TOWNSHIP 7 SOUTH, RANGE• 87 WEST, OF THIE 6THI PRINCIPAL
MERIDIAN.
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PROPERTY OWNERS OF RECMDS WITfliN 300'
OF CATTLE CRI 1;A.NCH P.U.D.
John McNulty
P.O. Box 200
Carbondale, CO 81623
Mary T. Squires
- 0720 121 Road
Carbondale, CO 81623
Cottonwood Pass
c/o E. W. Baker.
Suite 1011
600 South Cherry
Denver, CO 80222
Merrill & Delores Laurence
11104. County Road 115
Carbondale, CO 81623
Gary McNulty
P.O. Box 200
Carbc.mdale, CO
81623
J. Salter, S. Bellow
Colorado Coun'cry Panorama
500 North Street
Aspen, CO 81611
Sky High Enterprises
5532 Royal Crest
Dallas, Texas 75229
D. M. Crosby
c/o Crosby Company
1st National Bank Bldg.
Minneapolis, Minn. 55402
•
CAT':i7,,., C;) I;l;i: P.U.D. OL'J! C'i 1'':%,_
The following objectives are e summarization of the concepts
_ -anccp�..,
which have guided the design of the P.U.D. since its inception.
l.. To provide a highly desirable rural residential living
t
environment in the ]i1 L:.-I:ual"l.-l1g i''07:1_ Valley area with an
emphasis on preserving the natural bea ty and pastoral
ranch setting of the site.
2. To provide spacious .building sites which maximize the
views of the surrounding mountains and irrigated valleys
while providing as much privacy to each site as possible.
To emphasize the rural setting and to reflect a conscious
stewardship for the land, preserve a major portion of the
irrigated pasture lands :i.n an agriculturally productive
state.
4. To establish a balance between the domestic and _irrigation
demands on the available water which will allow the
continued forage production on the reserved agricultural
lands during the average rainfall years.
J. TO provide for pedestrian/equestrian move,enL throughout
the site.
6. 'i'o p_'=o'TiCii'• i t1 Co- ? o 1=p LC _. :;es
on the P.U.D. site.
7. To establish protective covenants including strict archi-
tectural controls over all structures and landscaping.
8. To provide for the ownership and maintenance o.[ common
space through a home owners association.
LOGIN f f;;; /,'J) CL,...1:1 , Sii'i: (:]T/ I•!'..C.Li:
Cattle Creek I-, .LC is presently an active CC'ai=t-1.0 Ui>L:r<at:1C)iI
loca ed at the westerly enol of Missouri Iie7 ght . Access to
the Ranch C:ists over two I)r1.ITa`iry rc)l1 Les . From the west it
is roi_:inn it:e ly 7 miles from I1ighway 82 along County Roa(? 1.00,
a distance of approximately 4 miles from t:he Catherine Store to
the Ranch. Additionally, County Road 115 I roni Spring V; 11c»v
and Count:.,- Ford 122 frull El Jebel as well as the Cottonwood
Pass Road all converge upon tICRanch s -.. Using
the above des-
cribed
s_cribed
routes the Ranch 1s <ap )ro:Lmat:C_iy 8 miles from Carbondale,
13 miles from Glenwood Springs and 8 miles frau' El Jebel.
The
ebel-
The Ranch site is composed of .lush green alluvial plains along
Cattle and Coulter Creeks which converge at the westerly edge
of the Ranch and of higher mesas to the west, north. and south
of the creeks. There is presently approximately 250 acres of
irrigated pasture and hayground along Cattle Creek and on the
IPesa to the south. The ridges and steeper slopes on the mesa
are characterized by mixed sage and oak brush. The high land
west of Coulter Creek and north of Cattle Creek is a mixture
of dry land wheat fields and rolling sage covered hills.
Views fro171 the high lands of the Ranch are characteristic
of the Colorado Rockies with majestic vistas of the 'Maroon
Mt., i
L�e11..�, 1�1t. Sop:�-:i.s, SunlightI�•�t:. , Lookout I���. , and basalt ?��t.
as well as the overview of the pastoral ranch lands along
Cattle and Coulter Creeks.
The CatLie Creek Raneh P.U.D. is a variety hjTh
rural residentiel .vin oplions which C( 1(; n UnIOM:
of rural and suburban aii;enities.
To the north and 'west (Ariculture/Residential T)istrict) lots
from 5 to 20 acres provide the opporlunity to "do your own
thing" as well us enjoy ton benefits of the PUD open space
and associated facilities. Lots in the Residential/Sin:,,le
Family District average over 3 acres. Soe_ of these lots allow
the stabeling of horses and include irrigation water to main-
tain the pasture land existing on the lot. Others Prohibit the
keeping of livestock or the niteration of the native landscape
of the site except as necessary for house construction.
A majority of the irrigated agriculture lands have been pre-
served as open space for the use and benefit of the PUD resi-
dents. The existing ranch homestead will he remodeled to
provide stable and riding arena facilities fpr horses of the
PUD residents. Equestrian trails along raodways and special
easements will connect: all open space lands into an integrated
equestrian trail system.
The lake on the southerly mesa services both a water augmenta-
tion and aesthetic recreation purpose. In a more suburban.
character, a park facility will be developed adjacent to the
lake. It shall include Picnic grounds and shelter, open lawn
play area, play equipment, lake side dock and landscaping.
All lots in the PUO will be provided with central water service
111 11caeejries throegho
Family District. Liitations on landscape irrigation from the
domestic water supply have not yet been finalized but water
supplies are adequate to allow at: least 4,000 square feet of
irrigated landscaPe on each lot . Sewage treatment will be
by septic tank and leach field on each lot. Public service
utilities including electric, telephone and natural gas shall
be installed underground.
For the purpose of maintaning a high quality standard through-
out the Ranch, an Architectural Control Co` shall have
strict control over all struetural and site development activi-
ties including landscaping. A Home Owners Association will
be formed as a non-profit: corporation to manege the open space
facilities and water 'system and to provide miscellaneous
services such as maintenance of the private toads in the Agri--•
culture/Residential. District.
CATCATME CRI;i',' I''i...i 11 P.U.D. ICONJ._,
Section I.
A. To carry out the purposes and provisions of the
Garfield County Zoning Resolution, Garfield
County, Colorado and particularly, Section ection .L.400
of that title, as amended, the Cattle Creek Ranch
Planned Unit Devolop.-::nt.-. Zoning District is further'
divided into the following Zone District classifi-
cations:
R/S.F.
A/R
A/O.S.
- Residential/Single-Family District
- Agricultural/Residential District
- Agricultural/Open Space District
B. The boundaries of these Districts shall be located
as shown on the Cattle Creek Ranch P.U.D. Plan.
Section 1I. R/S.F. - Residential/Single-Family District_
A. Uses, by right.
Single -Family dwelling and customary accessory uses
.i
including buildings for shelter or enclosure of
property accessory to use of the lot for
residential
stlgle-
family plrpOSEs cl ' fences, hedges,
ell.r a it f'. _�. ._- 1e111' .` t:r'r1i1
Park and greenbelt.
B. Uses, conditional.
None.
C. Uses, special..
None.
D. Minimum um Lot Area.
2 acres.
Maximum Lot Coverage.
C percent. t
1 . Minimum Setback.
1. Front yard: 40 feet
2. Fear yard: 40 feet
3. Side yard: 25 feet
G. Maximum Building Ilei ght.
25 feet
11. Oa=f %f:reC'l: Par'1:inC;/P. e_ 1.
Pour oft -street parkin j spaces On the su:(te lot for
each dwelling unit or 1 :space per 600 hundred square
feet of floor are, whichever is greater.,
.
Section 11L 1/P - Agricultural/Residential District
A. Uses, by right.
Agticuitural including farm garden, greenhouse,
nursery-, orchard, ranch, small animal farm for
production of poultry, fish, fur -bearing or other
small animals and customary accessory uses includ-
ing buildings for shelter or enclosure of persons,
animals, or property employed in any of the above
uses, retail establishment for sale of goods pro-
cessed from raw materials produced on the lot.
Fennel, riding stable and veterinary clinic.
Park and greenbelt.
Single-family dwelling and customary accessory uses.
Uses, conditional.
Day nursery, studio for conduct of arts and crafts
Uses, special.
None.
D. Minimum Loi:. Area.
5 acres.
. Maximum Lot Cover a.c; e: .
10 percent.
P. Minimum Setback.
1. Front yard: 75 feet
2. Rear yard: I. feet
3. Side yard: 50 feet
G. Maximum Building Height..
25 feet.
r_
11. Off -Street Par;:inq/ esi den tia l .
Pour off-street parking spaces on the same lot for
each dwelling unit or 1 space per 600 square feet
of
floor area, whichever is greater.
Section SV. 71/0.S. Agricultural/Open Space District
A. Uses, by right.
AgricuAtural including farm, garden, nursery,
orchard, ranch and customary accessory uses.
including buildings for shelter or enclosure
OJ: animals or property empIoved in any of the
above us, --s.
Kennel and riding stable.
Park and greenbelt.
B. Uses, conditional.
Water impoundments.
C. Uses, special.
None.
D. Minimum Lot Area:
2 acres.
E. Maximum Lot Coverage.
15 percent.
F. Minimum Setback.
1. Front yard: 40 feet
2. Rear yard: 40 feet
3. Side yard: 25 feet
G. Maximum Building Height.
25 feet.
Section V.
Except as hereinabove provided, and except for the
following Sections of the Garfield County Zoning
Resolution, all provisions of the Garfield County
Zoning Resolution shall be applicable to the Cattle
Creek Ranch P.U.D. Zone Districts. The Sections of
the said Zoning Resolution which shall have no app-
licability are as follows:
Section 3.00 through 3.11.04
Section 4.01.02 paragraph (1)
txuD USt 7(::iG33 Z w REX±2Uz p22G£I&G UNITS
Resid n tial/Siegle-Family District
Ag riou1tural/Residential District
Agriculture/Open Space District
Minimum acres dedicated to
Common Open Space 160
Total
Cross P.U.D. Density
Net Density
Residential/Single tanjly Dist.
Agricultural/Residential Dist.
Note:
ACRES
420
349
194
963
MAX.DWELLIRC
U.J TS
109
22
7.8:acres/gait
3.8 acres/unit
15,9 acres/unit
131
Engineering refinement of the plan as required for final
platting may result in minor ra«ia£ians in rho prc set
ELDORADO ENGINEERING CO.
P. 0. Box 669 818 Colorado Avenue
GLENWOOD SPRINGS, COLORADO 81601
(303) 945-8596
TO G 0. r-, J Q j [, D
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TIFEE or 1T2LOSRIO EaIL.
DATE
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GENTLEMEN:
WE ARE SENDING YOU Attached ❑ Under separate cover via
O Shop drawings ❑ Prints
O Copy of letter 0 Change order
0 Plans
the following items:
❑ Samples 0 Specifications
0
COPIES
DATE
NO.
DESCRIPTION
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THESE ARE TRANSMITTED as checked below:
O For approval 0 Approved as submitted 0 Resubmit copies for approval
XFor your use 0 Approved as noted 0 Submit copies for distribution
As requested
0 Returned for corrections
0 Return corrected prints
❑ For review and comment 0
O FORBIDS DUE 19 ❑ PRINTS RETURNED AFTER LOAN TO US
REMARKS
Cke_eL4
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COPY TO
FORM 240-2 - Available from (f Townsend, Mass. 01469
SIGNED:
If enclosures are not as noted, kindly notify us at once
PUBLIC NOTICE
Take Notice that Cattle Creek Ranch Ventures has applied to the
Board of County Commissioners, Garfield County, State of Colorado,
to request a Preliminary Plat Approval in connection with the
following described property situated in the County of Garfield,
State of Colorado, to wit:
Legal Description
The S 1/2 of the SE 1/4 and Lots 7, 8, 12 and 13 and the west 29.7
acres of Lot 14 and the west 980.10 feet of Lot 15, except a portion
of a tract conveyed by deed recorded in Book 61 at Page 553 and ex-
cept that portion of Lot 7 lying southeasterly of the right-of-way
of an existing county road (#113), all in Section 5; and SE 1/4
SE 1/4, Section 6 except a portion of that same tract conveyed by
deed recorded in Book 61 at page 553; and SE 1/4 NE 1/4, Section 7;
and all of Section 8 except a parcel of land described as follows:
Beginning at the northeast corner said Section 8; thence S 89° 56'
46.2" W 1,641.369', along the north line said Section 8; thence S
00° 17' 48" E 35.37; thence N 89° 56' 46.2" E and parallel to the
north line said Section 8, 1,641.746; thence N 00° 54' 23" W 37.37
feet to the point of beginning, containing 1.333 acres more or less,
All in Township 7 South, Range 87 West of the 6th Principal Meridian.
Said Preliminary Plat Approval is to permit the Petitioner to sub-
divide approximately 498 acres into 67 single family lots on the
above described property.
All persons affected by the proposed Preliminary Plat Approval are
invited to appear and state their views, protests or objections. If
you cannot appear personally at such meeting, then you are urged to
state your views by letter, particularly if you have objections to
such Preliminary Plat Approval, as the County Commissioners will give
consideration to the comments of surrounding property owners and
others affected in deciding whether to grant or deny the request for
Preliminary Plat Approval. This Preliminary Plat Approval applica-
tion may be reviewed at the office of the Planning Director located at
2014 Blake Avenue, Glenwood Springs, Colorado, between the hours of
8:00 a.m. and 5:00 p.m. Monday through Friday.
That public hearing on the application for the above Preliminary Plat
Approval has been set for the 9th day of July, 1979, at the hours of
7:45 at the District Court Room, Garfield County Courthouse, Glenwood
Springs, Colorado.
Ray ` 1 dwin��Q�1r�-
Garfield County Planning Director
CATTLE CREEK RANCH WATER SYSTEM
Desitin and Construction: The proposed domestic water system will
be designed and constructed by the developer as indicated on the
water system plans. Plans and specifications will be approved by
the Colorado State Health Department prior to commencing construction.
Ownership: All domestic water facilities shall be dedicated by
the developer to the Cattle Creek Home Owner's Association. The
Association will be formed at the time the Final Plat is approved.
The Association shall be a Coloraclo non-profi t corporation and
ow.fIrThip C1` c'! ! {:owes:l i( (' ri.jht'_; and afl domes-
tic water facilities.
Financing.: The Association will assess monthly users charges in
conformance with the articles of incorporation and the by-laws of
the Association. The users fees shall be used for operating and
maintaining the water system in conformance with Colorado State
Health Department requirements.
GAS, ELECTRIC AND TELEPHONE SERVICES
CATTLE CREEK RANCH P.U.D.
Natural Gas: Rocky Mountain Natural Gas Company will provide gas
service to the site. A preliminary plan of the development has
been submitted to Rocky Mountain, and they have indicated on the
plan the layout they propose.
Electricity: Holy Cross Electric Association has been provided
with a preliminary plan and they have responded with an estimate
as to what they anticipate construction costs may be.
Telephone: Mountain Bell Telephone Company has been informed of
the project and a preliminary plan has been forwarded to them.
They have expressed no problems relative to providing telephone
service.
At the April meeting of the Garfield County, Utility Company. -Developer
coordination group the Cattle Creek Ranch P.U.U. was discussed in
order to provide advance information about the location, size and
phasing of Cattle Creek Ranch P.U.I.
WILDLIFE
The Cattle Creek Ranch development has been disucssed with repre-
sentatives of the Colorado Division of Wildlife. The Division has
expressed their concern for including certain provisions in the
convenants for protection of deer, which use the ranch for winter
range.
These provisions include fencing details which will allow free
use of the area by wildlife.
Dog control is the other area of concern expressed by the Division
of Wildlife. Both of these subjects have been addressed and included
in the covenants.
CATTLE CREEK RANCH P.U.D.
DRAINAGE REPORT
This drainage report is broken down into three general areas being
the Cattle Creek Ranch Road crossing of Cattle Creek, the overall
on-site drainage and the augmentation/recreation lake.
Cattle Creek Ranch Road Crossing of Cattle Creek
Cattle Creek Ranch Road crosses Cattle Creek at a point approximately
700 feet above the point where Coulter Creek flows into Cattle Creek.
The drainage area above the crossing is approximately 48 square
miles. The entire Cattle Creek drainage area (above its confluence
with the Roaring Fork River) is approximately 92 square miles.
Existing drainage structures of interest along Cattle Creek or in
the general area of the proposed subdivision are as follows:
1. Coulter Creek/County Road 113 - A 60" C.M.P. round pipe
in good condition but with it's outlet right at the
edge of normal flow of Cattle Creek.
2. Cattle Creek/County Road 100 - An 84" C.M.P. round pipe
in good condition but with a very poor approach to the
inlet. The creek makes about a 70°--80' turn at the
entrance to the cuvert.
3. Cattle Creak/Highway 82 - An arch -type culvert witha
span of approximately 28 feet and rise of approximately
11 feet in good condition and with good inlet and outlet
flow conditions.
Conversation with the County Planner and County Road Department
revealed that the above three culverts have adequately handled
normal run-off from snowmelt and storms for at least the last
40 years. Records from a U.S.G.S. stream gaging station on
Cattle Creek upstream of the site with a 31 square mile drainage
area, and which was in operation for about thirteen years in the
first part of the 50's and most of the 60's indicate a maximum
flow 280 c.f.s. The existing 84" C.M.P. described above should
handle approximately 400 c.f.s. without overflowing the County
Road.
A review of the U.S. Army Corps of Engineers study and report, part
of the Flood insurance Study for Garfield County (U.S. Depart-
ment of Housing and Urban Development, Federal Insurance Adminis-
tration, February, 1977) gives estimated peak run-off for various
storms at Cattle Creek/Highway 82 (92 square mile drainage area)
of:
100 -year 5000 c.f.s.
50 -year 3800 c.f.s.
10 -year 1850 c.f.s.
We contacted the Corps and discussed these figures with their. We
also discussed methods of arriving at maximum estimated flows for
our site approximately 7 miles upstream and with our 48 square mile
drainage area. We agreed that prorating the estimated peak run-off
to the drainage area was as accurate a way of estimating peak run-
off for our site as reprogramming and recalculating same. With
this ratio of 48/92 or 52% the estimated peak run-off for various
storms at the site is:
100 -year 2600 c.f.s.
50 -year 2000 c.f.s.
10 -year 1000 c.f.s.
It can readily be seen that all the above flows exceed the calculated
capacity of the existing 84 C.N.P. This led us to sizing the culvert
in question based on a reasonable, practical and historical approach
as opposed to the theoretical approach from the Corps calculations.
In other words »e discounted their figures as being overly conservative.
Again in discussing this matter with the County Planner and the
County Road Department it was felt that the high intensity, in-
frequent storms in the spring, while snowrnelt run-off was at its
peak, would be our worst. condition. Further, it was agreed that
sediment and fine debris would not be a problem due to the character
of the drainage basin and that the greatest single hazard would be
large debris such as tree limbs or trees which might float down
during high water and become lodged in the culvert thereby blocking
the flow. Consequently we decided to choose a pipe -arch type culvert
as opposed to one or more round pipe culverts.
We have proposed the use of a 15'-4" (span) by 10'-0" (rise) pipe -
arch. This culvert is approximately hydraulically equivalent to
two (2) 84" round C.M.P.'s and should therefore carry twice the flow
of the County Road 100 crossing downstream of the site. According
to the Corps calculations and our prorating of same for the appro-
priate drainage area, this culvert will carry a 10 -year storm of
approximately 1000 c.f.s. This would cause no backwater and when
flowing full the water surface elevation above the site crossing
would be approximately 7095 and well below either County Road 113
or Cattle Creek Ranch Road. We feel that this culvert offers a reasonable,
practical and safe crossing for the sites primary access road.
Additional soils data will be gathered prior to final construction
plans to determine soils stability in the specific area where the
culvert is to be placed.
Overall On -Site Drainay
Because of the proposed low density development, 2 to 40 acre lots
and its proposed use for single family residences and agricultural
land, existing natural drainage ways on-site should not be affected
and overland drainage should continue as it does now without any
adverse effect from the development.
The natural drainage system will be supplemented by conventional
means of ditches and culverts in the areas of road crossings and
where roads meet or crossirrigation ditches.
There are two major irrigation ditches which cross the site from
Northeast to Southwest. The lower ditch (most Northerly) is known •
as the C & M Ditch and the upper ditch (most Southerly) is known
as the Needham Ditch. The general plan for handling these ditches
is to pass the ditches by culverts under both the roads and roadway
ditches. It is proposed to pipe both the irrigation and roadway
ditches.
We contacted Mr, Steve Cal l i cotte , State Water Commissioner, on
the C & M Ditch. and Mr. Wayne Doyal , President of the Needham
Ditch Company, to discuss our pians in handling these ditches.
From our conversation with these people it was agreed to size the
C & ti Ditch culverts to pass 20 c.f.s. and the Needham Ditch culverts
to pass 30 c.f.s. Consequently we proposed to use 30" and 35" C.M.P.
culvert pipes respectively for these ditch crossings.
Culvert pipes for roadway ditches and cross -drains as shown on the
plan will handle a 10 -year storm or greater as we propose to use
the County minimum size of 18". For the larger drainage areas on
the site we sized the culverts based on a 50 -year stomp. Culvert
pipes and cross -drains will be installed so that ends are not sub-
ject to vehicle damage. If this is not accomplished it is recom-
mended that concrete headwalls be installed.
Again because of the low density type development it is riot anticipated
that drainage off the developed site will cause any adverse conditions.
Where possible on-site run-off has been diverted into the proposed
lake to be constructed on the site.
Augmentation/Recreation Lake
The proposed development includes a lake to be constructed in the
South center portion of the property below the Needham Ditch. The
purpose of the lake is two -fold being for both recreation and as a
part of the plan for augmentation. The intent of the augmentation
is to release water from the reservoir to augment consumptive use
when senior water rights are not in priority.
When designing the reservoir we consulted Wright Water Engineers,
Inc. and were advised that the minimum storage volume should be
about 20 acre-feet. The reservoir has been designed to hold
approximately 21 acre-feet from its floor at elevation 7225 to the
overflow pipe to be set at elevation 7232. Additional storage would
be realized if the overflow pipe were closed allowing water to build
up the additional foot to the emergency spillway level. This would
add approximately 3 acre-feet.
Normal release of water from the reservoir would be by a slide gate
and 18" pipe through the embankment. At normal water level of 7232
any additional flow into the lake would overflow into the 18" riser
overflow pipe and then the same 18" pipe through the embankment.
Excessive flows into the reservoir when the water was at normal depth,
7232, would be released through the 18" riser overflow pipe and/or
emergency spillway.
The raai n development road will pass over the embankment as shown
on the plans. Recreational ,,cil i i s round th lak are and r
design by the Panner.
Additional soils data will be gathered prior to final construction
plans to determine the need for and design of the sealer to be used.
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,.:.•,n(1;11"1 v'li r:" -1Z E_':• l' ._Li . MC.
12r.:v11t. COLn./_..
GLENWOOU SPRINGS
TEL: 91:5-7755
June 30, 1977
Mr. Frank Lerner
P.O. Brox 9140
Aspen, Colorado 81 61 1
Re: (dater Supply for the proposed Cattle
Creek Ranch development
Dear Mr. Lerner:
Wright ;tater Engineers has completed a preliminary analysis and eval-
uation of the water rights associated with the proposed development of the
Cattle C reek Ranch. This ranch is also known as the lleuschkel Ranch, and
is located near the confluence of Cattle Creek and Coulter- Creek in Gar--
field County.
We have also conducted limited geophysical investigations of the Cat-
tle Creek alluvium, and are now "in the process of dri l 1 ing a test well to
determine the physical ground water supply in the area. In addition to the
Cattle Creek alluvium, we believe that some other areas of the ranch rr:ay
have good potential for individual wells. The main domestic supply for the
development, however, is expected to come fro:! the Cattle Creek alluvium.
The water rights situation in the Cattle Creek drainage is extremely
tight as the creek is very much over appropriated. Historically, the rela-
tive
cla-
tive position on Cattle Creek oftr!e f-icuschi;el Ranch is good as the 3 senior
water rights owned by the ranch have never been called out and, in our
opinion, will not be called out in the future.
We believe that the available physical and "legal'! water supply can
be developed to adequately feet the domestic needs of the currently
proposed 125 residential unit development, even in the dryest years.
In addition to dater for domestic meds, a significant amount of
irrigation water is available which can be retained for use on the
land, All or a portion of the senior Lewis and Somers Ditch rights,
however, must be transferred by a Water Court decree to domstic and
municipal use.
If you have questions on the above, please don't hesitate to call.
Very truly yours,
WRIGHT WATER ENGINEERS, INC.
cc: Ron Liston
IdLLljp
771--2h
By•
William L. Lora h
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ASPEN OFFICE
P.O. BOX 8028
ASPEN, COLORADO 81611
GLENWOOD SPRINGS OFFICE
P.O. BOX 1285
GLENWOOD SPRINGS. COLORADO 81601
STEAMBOAT OFFICE
P.O. BOX 5220
STEAMBOAT VILLAGE. COLORADO 89499
SANTO DOMINGO OFFICE
WRIGHT-MENA WATER ENGINEERS
KM 91 ANTIGUA CORRETERA DUARTE
SANTO DOMINGO. DOMINICAN REPUBLIC
TO:
FROM:
DATE:
SUBJECT:
WRIGHT WATER ENGINEERS, INC.
ENGINEERING CONSULTANTS
2420 ALCOTT STREET
DENVER. COLORADO 80211
1303) 438-6201
Glenwood Springs
Tel. 945-7755
MEMO
Roger Hocking, Eldorado Engineering
Bill Lorah
May 15, 1979
Cattle Creek - Augmentation Reservoir
KENNETH R. WRIGHT
WILLIAM L. LORAN
RUSSELL E. DA.RR
F. ROBERT 0,cGREGOR
RALPH L. TOREN
ROBERT D. TAFELSKI
The water court application for the augmentation reservoir was for
60 acre feet. The intent of the augmentation decree is to release water
from the reservoir to augment consumptive use when senior water rights
are not in priority. The senior water rights will be in priority during
the irrigation season. During the winter months the consumptive use is
estimated to be 7.5 acre feet plus reservoir evaporation.
The minimum volume of the augmentation reservoir must be 10 acre feet.
This assumes minimal reservoir seepage. If possible, I would recommend a
minimum volume of about 20 acre feet.
If you have any questions, please contact us.
WLL:ep
cc: Ron Liston
771-24
Ir)B C)..._
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RES0LUTI0N Ill -//3
WHEREAS, FRANK LERNER and J. R. STURGIS have made application to the Board
of County Commissioners of Garfield County, Colorado for a Planned Unit Development
amendment to the Zoning Resolution of Garfield County, Colorado, said proposed
Planned Unit Development being known as the Cattle Creek. Ranch Planned Unit
Development all as more particularly described in said application; and,
WHEREAS, said application was referred to the Planning Commission of Garfield
County, Colorado as provided in Section 8.04 of said Zoning Resolution and further,
that said Planning Commission has certified to the Board of County Commissioners
of Garfield County, Colorado its recommendation that the said application be
approved subject to conditions; and,
WHEREAS, the Board of County Commissioners of Garfield County, Colorado has
IIduly and regularly held. a public hearing on said application in conformity wits?
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!t,`,,'; of the State of Colorado and the�-•i'!)`'?Sl;i':"iS O - `::�.I,- !_:iifi:�� :i'Sr)a�.!Uit: and,
WHEREAS, the Board of County Commissioners of Garfield County, Colorado is now
fully advised in the premises in regard to sai d application, and fi nds that such
Planned Unit Development amendment is in conformity with the General Plan for
Garfield County and the Zoning Resolution of Garfield County, Colorado.
N0W THEREFORE, BE IT RESOLVED by the Board of County Commissioners of Garfield
County, Colorado that the application for a Planned Unit Development amendment to
the Zoning Resolution of Garfield County, Colorado for the Cattle Creek Ranch
Planned Unit Development, be and the same is hereby approved, but expressly subject
to compliance with and fulfillment of the following conditions, to -wit:
(1) Approval by the District Water Court of the proposed water
augmentation plan.
and that no development of the subject property under said plan or im;lplernentation
of said plan shall be done until the above foregoing conditions have been complied
with to the satisfaction of the Board of County Commissioner; -s of Garfield Count.;,
Colorado and that upon such compl lance, the Zone Di stri ct Map of Garfi el d County
be accordingly amended to refl ect this amendment.
• Dated this day of(f27r)L6e.c�
Attest:
Deputy ,,ler[; of the Boa
of County Cor.mi ss i one rs
Garfield County, Colorado
A.D. 1977.
THE BOARD OF COUNTY COMMISSIONERS
OF GARFI ELD COUNTY-yCOLQBADO 1
J<i chard C. Jol 1 eyj; Chairman
ss -loner
Conhlnssioher
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nt51i
1 CVLG:. n.,,
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I!".,:—..,,•.:,NT :.%TIC':
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rIEA..•=.,1 7 v %
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SN, 10 ,C. rT OrF1T.,:
1,...“.....C.,,,,..':.,.
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S,41(.. D :.... :. . J L L., 1 pEr`.L.0
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G };T V/ TER ENC;1NS=E_f2S. INC.
Eii Gl+•iEEit INC; GON ULTANT
• k4k0 ALCOTT PTN�rY
DfNVEit. CpLV»A_l C> 0,1 l
l?O?1
'Mr. Frank Lerner
P.O. Box 9140
Aspen, Colorado 81611
August 31, 1977
ktr,.Lr,l re +-• .+r
HILLIAM L Lry:,.14
-.1 C I...C. (..Err.
HnCH,Pi, P JS•IYi JY
i,!,".. Hf [l 1l,!Lr.41
f..La•.. L
Dear Mr. Lerner:
Attached is a copy of our report entitled ''Groundwater Investigation
Cattle Creek Ranch." This report describes the drilling and testing
of Cattle Creek Test Well /1.
From water samples taken from Test Well pi, water quality appears rood.
Hardness was somewhat high, however, within the U.S_ Public Health
Service standards.
It is recommended that this report be placed in your files for permanent
record, you ou have any qu:stions, pleas= do not hesitate to call.
CJG:RDT :ekb
Attach_
771-2'+GW. 2
Very truly yours,
WRIGHT WATER ENGINEERS, INC.
By_ � ,Ae,?%%%� � l .-___,..3-•,,,,--t------
Clemens J. GoeLert) ( li
Robert D. Tafeiski
GROUNDWATER INVESTIGATION
FOR TFIE
CATTLE CREEK RANC1!
INTRODUCTION
As part of the investigation to identify a potable groundwater source for
the proposed Cattle Creek Ranch Developr,rnt, Cattle Creek Test \Jell Io. t
was proposed. The area of the development is adjacent to Cattle Creek i.
Sec. 8, T7S, R87W, 6th P.M. See Figure 1 for location. Several drillers
were contacted for drilling of the well. After careful consideration,
Collins Drilling Company of Carbondale was retained to drill the test hole.
The drilling and testing of Cattle Creek Test 1!e11 Mo. 1 took place in July,
1977. Due to the lack of subsurface data in the area, the length of time.
and actual depth of rhe test well could not be accurately defined before
drilling the test hole.
Upon completion of the.drill incl and development, the test well was test
pumped, and water samples taken and analyzed by the Industrial Laboratories.
SITE SELECTION
The site for thewell was selected from geophysical information and a geo-
logical reconnaissance gathered in June, 1977. (See Appendix A for the
geophysical information and report).
The well was drilled at a proposed
location in the northeast quarter of the northwest quarter of Section 8,
RS7W, T7S. The location is adjacent to Cattle Creek just northwest of the
confluence with Coulter Creek.
WELL CONSTRUCTION
Collins Drilling Company of Carbondale, Colorado, set up their cable tool
drilling equipment at the site of the test well on July 20,1977- A 12 -inch
surface casing was set to a depth of 17 feet. An S -inch hole was then
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drilled to a total depth of 125 feet. During drilling, 56.6 feet of 8 -
inch, _280 wall casing was installed. From 56.6 feet below the surface
to a total depth of 125 feet, the well was drilled open hole.
Geologic samples were collected at 5 -foot intervals and at significant
changes in formation. See Figure 2 for geologic well log. Top soil was
found to a depth of 2 feet. Froin 2 feet below the surface to 17 feet,
rounded to subangular gravels were present. From 17 -feet below the sur-
face to 90 feet, a clay intermixed with sand and silt and containing small
lenses of gravel was encountered. A gravel in a matrix of coarse to fine
grained sand was present from 90 to 95 feet. From 95 to 102 feet below
the surface a medium to fine grained sand was found, underlain by 23 feet
of dense fine-grained basalt sand.
A geophysical log was run on the hole to check spontaneous potential and
electrical resistance.. This was conducted on the encased portion of the
well. The log was conducted to determine the precise location of the con-
tacts bewteen the layers. The log of the well can be found in the enve—
lope at the rear of this report.
After evaluation of the geologic samples, it was determined that three dif-
ferent slot sizes of stainless steel well screen should be used in the test
well. With the aid of the electric log, a well screen assembly was placed
in the well in the following manner. At the bottom 123 to 125 feet below
the surface, a two -foot section of 7 -inch ).D. tail pipe with a bottom plate
on the bottom was placed. Above the tailpipe is a five foot section of 12
slot stainless steel well screen. Above this screen, a 13 -foot, 7 -inch 0.D.
section of blank pipe was placed. A 10 -foot section of 20 slot size stain-
less well screen and a 4 -foot section of 80 slot size stainless steel well
screen were set respectively above the blank pipe. Above the 80 slot size
well screen was placed 34.60 feet of 7 -inch 0.D. riser pipe. Above the
riser pipe was placed a Figure K packer which forms a seal between the out-
side of the riser. pipe and the inside of the 8 -inch casing. The above de-
scribed well details are illustrated in Figure 2.
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�'--Backfill
7A
lOr
12" Hole
Cement grout
Gravel
8 3/4" 0_0. 0.15 wall
Steel casing
Figure K Packer
Scale
Vertical 1" -- 20`
Horizontal 1" - 10"
7" 0.0. .150 wall riser
pipe
Clay catcher
1" telescope size 40
Slot stainless steel
wrap well screen
7" telescope size 2.0
stainless steel wire
screen 7" 0.0. .150
Pipe
wire
slot
trap
wall
7" telescope size 12
slot stainless steel wire
wrap well screen
7" 0.0. .150 wall tail
Steel plate
Fill .
..v�•�•+`-mow^-s ._____— _____.
Pipe
Top soil
Red, white and
brown gravel with
sand and clay,
rounded to sub --
angular.
Brown silty -clay
with sand and lenses
of gravel.
Brown and black
fine to coarse
grained -sane[
Brown and black
medium to fine
grained sand
Black fine grained
sand with clay
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CATTLE CREEK RANCH
WELL SECTION TEST WELL
N O . i
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P, clay catcher was attached above the 80 slot well screen. The purpose
of the clay catcher its to prevent clay from dropping from along the riser
pipe around the screen and thus causing plugging.
The test well ti- :as completed when a gravel formation stabilizer was placed
in the annulus between the borehole and the casing. Placement was to tilithin.
32 feet below the surface. Two feet of sand was then placed over the gravel.
This was followed by a, cement grout in the annulus between the 8 -inch casing
and the borehole to within 10 feet from the ground surface. Fill material
was placed in the upper 10 feet of the annulus to facilitate future place-
ment of a pitless adaptor.
PUMPING TEST
Upon completion of the drilling and development of the test well, a care-
fully controlled quantitative pumping test was conducted. The pumping test
was conducted for a period of 24 hours. The pumping rate was constant at
101f gallons per minute. During this time, the water 1 -vel in the welt was
monitored with an electric water level probe.
Static water level in the well at the beginning of the test was 5.33 feet
below ground surface. in the first hour of pumping, the water level declined
9.34 feet. During the remaining 23 hours, the water level declined gradually
1.41 feet.
Two transmissitivities were calculated from the drawdown curve during the
test.. These values were 9,152 and 27,456 gallons per day per foot_
Transmissivities calculated from the recovery were 11,440 gpd/ft and 34,320
gpd/ft. Figure 3 Thustrates the drawdown and recovery curves. As can be
noted on the drawdown curve, stabilization of the pumping water level had not
been reached after 2.4 hours of pumping. This indicates a mining condition,
whereas the pumping rate exceeds the recharge rate. However, if the slope of
drawdown is projected, the pumping water level after 700 days of continuous
pumping at 104 gpm would be 21 feet. This projection is based upon the cone
of depression continuing to expand without encountering recharge or imperir,e<able
boundaries.
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WATER QUALITY
During_ the drilling, of the well, water samples were taken periodically and
field tested for various constituents. Also during the pumping test, a
number of water samples were taken.
As can be seen on Table 1, the water is of good quality with no constituent
analyzed found above the upper limits set by the U.S. Public Health Service.
The hardness could be considered sofPe:rhat high, even though it is consider-
ably
onsider-
ably below the upper limits set by the United States Public Health Service.
Individuals' taste might require home softening units.
In the sample taken just prior to shutoff of the test, manganese was
reported to be 0.2 moll. However, rechecks of samples taken in bottles con-
taining preservatives indicated manganese to be less than 0.05 mg/l. Future
samples should include analysis for manganese.
Duri ny continuous pump i ncl of the well, water quality should be monitored
on a yearly basis as required . by various State and Feder: l agencies.
CONCLUStOt1S
Under present conditions, Cattle Creek Veil Pio. 1 is capable of a 100
pumping rate. However, some precautions should be taken. Pio boundary
conditions were encountered during .the later stages of the pumping test.
Surface geologic evidence indicates impermeable boundaries within 2,004
feet of the well. These impermeable conditions could be counterbalanced
by reduced recharge further upstream. This can only be evidenced by long
term pumping. Therefore, it is rec.oinmended that after the well is put into
production, weekly measurements be made for the first four months and
monitored thereafter.
gPm
CIIF_ MICAL
Constituent
!til colinity (L')
Alkyl Oenzena r
J
Suttona11 (AE3S)
Arsenic 5
Dar (urns
El!carbonate
r,
Cadmium -
Ca Icium
admiumCalcium
Carbon Chloroforms
Extract (CCE
Carbonate
Chloride
Chromium5
Coppers
Cyanide'
Fluoride
Hardness
Iron
Leod5
Magnesium
Manganese
Nitrate
Phenol"
s
Soluniur'
Silicon dioxide
Silver 5
Sodium
Sulfate
Total Dis:i.olved
Solids (TDS)
L IncJ
Roctium -2265
Strontium -?0
TABLE
c D121NKI IG \'/AtiCE[ QUALITY STAND % DS
1_ (Standard Wet Chemical Analysis)
ci 0 t-
+-, .- r----- LIMITr_5 (m1/1 ) or (open)
r3 0- Paco inmond;,d 1. oxirnurr' Uneslnblish,d
< 0.1
M crcury .
Phosphate
Alkalinity (M0)
0.5
0.01
290
c9
< 0.1
1 0 250.0
0.2
0.3
270
< 0.05
9.2
< 0.05
2.1
211
1.0
0.0!
0.8 -t.7
0.3
0.05
45.0
0.001
3
35 10.0
48 250.0
330
0.2
240
C o rn r-ri a n t
Gonerally not harmful
To slat Frothing
0.05 Poisoning
I. 0 Poisoning
700 Toto
0.01 Poisoning
200 Hardness
Indicator of Potentially
Toxic Material
20 Toata
Taste Loxalive Prop
0.05 Poisoning
Taste
0.2 Polooninrx
! 4_2 4 Mottling of Tooth
500 Economics, Health
Staining, Taste
0.05 Poisoning
125 Laxative
Staining , Testa
Mat in
infants (Blue bobiaz) -
Taste
0. 01
Poisoning
Generally not hornfut
0.05 Poisoning-- Discolorafr
of ;Aernbranoa
115 Heart Conditions
Laxative ! To>tc Prop_
500.0 Lazativo, Tcjta
5.0 To st a
3.0 pc/1 Poisoning
10.0 pc/1 Poisoning
APPENDIX A
GEOPHYSICAL INVESTIGATION
AND
GEOLOGICAL RECONNAISSANCE
GEOPHYSICAL INVESTIGATION
AND
GEOLOGICAL RECONNAISSANCE
During the week of June 6, 1977, a groundwater/geophysical investigation
was conducted on the old Heuschkel hom :stead.
The area where the investigation was carried out Included Sections 5 iy 8,
Township 7S, Range 87W. This area included both the flat alluvial floodplain
adjacent to Cattle Creek
ari d
just upstream from the
the higher elevation bedrock areas.
Geology
confluence with Coulter Creek -
Three geologic units are found within the property boundaries: 1) Eagle Valley
Evaporite deposits; 2) Basaltic lava flo.•,s, and; 3) Stream deposited
alluvium.
The Eagle Valley Evaporito deposits were noted in the extreme northwestern
edge of the property. These deposits consist mainly of weathered gray shales.
The exact extant of the evaporite is not known at this tin . Basalt flows
and alluvium cover these shales in most localities. However, it should be
noted that the entire property is thought to be underlain at depth by the
evaporite deposits.
The basalts arc found outcropping along the alluvial deposits in the northeast
and the entire southern half of the property. This rock type is the remanant
of volcanic lava flows and consist of dark gray basalts exhibiting columnar
jointing. Numerous areas are found where gases escaping during cooling
have formed elongated pencil -sized channels called vesicles.
The last geologic unit found in the area of investigation were the stream -
deposited alluvial materials. These alluvium are composed of sands, gravels,
clays, silts, and large basalt boulders. The exact thickness of the alluvium
ranges from less than a few feet to over 80 Feet below ground surface.
I:S lllll5tT3ti`:I Uri !gore 1, i] total OIr5rX SE'251r11t ;O:%RCiingS and two res
tivity soundings were conducted during the investigation. The seismic curves
resulting from the field survey exhibit slow velocity materials ranging from
5,000 feet per second (fps) to about 7,800 fps. At GS -2, a higher velocity
material was encountered at a depth of about 20 feet below ground surface_
This materiel is probably bedrock rnat:erial.
In most cases, the relatively slow velocity material continued throughout
the 200 feet horizontal distance of the sounding. This indicates that the
slow velocity material extends to depth of 80 feet or more below ground
surface.
Two resistivity soundings were conducted to correlate the seismic data.
The resistivity curves generated from the field data indicate a somewhat
"dirty" material, probably consisting of silty sand and clay. Resistivity
values were somewhat low.
Water Quality
Two water samples were. taken during the geologic/geophysical investigation.
Table I illustrates the results of field tests conducted on the samples.
These samples were taken from the stream near the western edge of the home-
stead and from the spring which supplies water for domestic_ use on the
property.
TABLE. 1
WATER QUALITY
Sample Conductivity pH Manganese (mg/1) hardness (mg/1)
Cattle Creek 405 6.6 0 150
Spring 450 6.3 0 180
The results of the field tests indicate good quality water. Hardness, which
is generally high in areas near the evaporite deposits, was found to be 150
in the stream and 180 in the spring water.
Groundwater Potential
No further work should be realized with regard to the Eagle Valley Evaporite
material. These units are notorious for poor quaiity water, with numerous
chemical concentrations surpassing the upper limits for pot:able water supplies.
The basalts found on the property have variable water potential. in some
areas where vesicles are present and columnar jointing exists, groundwater
may be present in the m,Nlium range quantities. However, this potential go=ld
be site specific.
The best ground water potential in the area are the alluvial materials
underlying the flat areas adjacent to Cattle Creek. Mater quality as indicated
by the samples taken from the stream and the spring indicate good quality
water.
Recommendations
An 8 -inch diameter test hole should be drilled at GS -fir. During the drilling
of the well, bail tests and grater samples should be taken at 5 foot
intervals. The underlying evaporite deposits could influence the water
quality.
Therefore, water sampling as drilling progress is critical to denote
any grater quality slatification. Upon completion of .the test hole, an
elevation would be made regarding water quality and quan titY-
if both of these
parameters are acceptable, a screen should be set in the well and a carefully
r,
controlled 2�Y hour pumping test be conducted to determine tong-ter"c!,
reliability.
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ENGINEERING CONSULTANTS
2420 ALCOTT STREET
miNva-R. COLORADO 3021i
(303) 438-6207
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SOIL .FOUNDATION 98 S. ZUNI DENVER, COLORADO 80223 • 303/744-7105
E F•I GINEERING 1924 EAST FIRST STREET • CASPER, WYOMING 02801 • 307/234-212&
Subject:
Mr. Frank Lerner
c/o Ron Liston
Land Design Partnership
Suite 208, Village Plaza
Glenwood Springs, Colorado 80601
Gentlemen:
July 1, 1977
Preliminary Geotechnical Investiga-
tion for the Cattle Creek Ranch
Development, Garfield County,
Colorado.
Job No. 14,701
We have completed our field and laboratory studies for the preliminary
geotechnical investigation at the subject site. lle are presently drafting
the final report. Our investigation indicates that there are no serious
problems associated with the site geology or soil conditions. It should
be feasible to develop the property as a residential subdivision. We ex-
pect to have our final report out within the next week. This report will
describe the site geology and subsoil conditions and discuss their expected
effect upon the proposed development.
If we can provide you with additional information prior to the
submittal of the final report, please let us know.
Sincerely,
CHEN AND ASSOCIATES, INC.
By
RGM/med
Ralph G, lock, Eng neering Geologist
.t 2„r
CONSULTING ENGINEERS
SOia< FOUNDATION 96 S. ZUNI • DENVER, COLORADO 80223 • 303/744-7105
ENGINEERING 1924 EAST FIRST STREET • CASPER, WYOMING 82601 • 307/234-212$
PRELIMINARY GEOTECHNICAL INVESTIGATION
CATTLE CREEK RANCH DEVELOPMENT
SOUTHEAST OF GLENWJOOD SPRINGS, COLORADO
Prepared for:
MR. FRANK LERNER
P. 0. BOX 9140
ASPEN, COLORADO 81611
Job No. 14,701 July 6, 1977
TABLE OF CONTENTS
CONCLUSIONS 1
SCOPE 2
PROPOSED DEVELOPMENT 2
SITE CONDITIONS 2
GEOLOGIC SETTING 3
SUBSURFACE CONDITIONS 4
Soils iy
Bedrock 5
Engineering Properties 5
Ground Water 6
GEOLOGIC CONDITIONS AFFECTING THE PROPOSED CONSTRUCTION 6
Slope Stability 6
Shallow Ground Water and Flooding 7
Earthquake Potential 7
POSSIBLE FOUNDATION TYPES 7
SITE GRADING 8
LEACHING FIELDS 9
ADDITIONAL INVESTIGATIONS 10
FIG. 1 - LOGS OF EXPLORATORY HOLES
FIG. 2 - LEGEND AND NOTES
FIGS. 3 through 6 - SWELL -CONSOLIDATION TEST RESULTS
FIG. 7 - GRADATION TEST RESULTS
TABLE I - SUMMARY OF LABORATORY TEST RESULTS
TABLE 11 - PERCOLATION TEST RESULTS
PLATE 1 - SURFICIAL GEOLOGY MAP
(1)
COC1_US i ONS
The site is suitable for the proposed residential subdivision from
an engineering geology and subsoil point of view. No conditions of
a geologic nature occur on the property which would constitute a
major hazard or render the proposed development infeasible.
(2) Certain geologic and subsoil conditions should be accounted for during
future planning and development. These conditions are described and
discussed.
Soil and foundation conditions at the site are relatively complex.
Spread footings and drilled pier foundation systems will be suitable
for residential or other light structures. A final soil and founda-
tion investigation should be conducted.
(4) The majority of the on-site soils should be suitable for standard
leaching field type septic systems. Some areas of shallow ground
water and low permeability soils do occur at the site, however, we
do not anticipate that these conditions will be extensive. Specific
leaching field investigations should be conducted.
(3)
-2 -
SCOPE
In June 1977, a preliminary geotechnical investigation was conducted
for the Cattle Creek Ranch development in eastern Garfield County approxi-
mately 10 miles southeast of Glenwood Springs. The results of that
investigation are presented. The general geologic and soil conditions
are described and their expected effect on the proposed construction is
discussed. The investigation included a geologic field study which used
shallow exploratory holes to determine general subsurface conditions.
Laboratory analyses were made on typical soil and bedrock samples. Per-
colation tests were conducted at the site to determine the general
suitability of on-site soils for standard leaching fields.
PROPOSED DEVELOPMENT
We understand that the 980 -acre parcel will be subdivided into a
residential subdivision. Individual lots will be relatively large and
much of the property will be left as open space. The valley floors of
Coulter and Cattle Creek will not be developed and two large meadow
areas in the southeastern part of the parcel will be left as open space.
A network of access roads will be constructed. Individual homes will
have separate septic systems.
SITE CONDITIONS
The 980 -acre parcel investigated is located on Cattle Creek near its
confluence with Coulter Creek. The parcel covers all of Sec. 8 and por-
tions of Sec. 5, Sec. 6, and Sec. 7, T. 7S., R. 87W. Topography at the
site is varied, consisting of nearly level valley floors and terraced
3
surfaces, moderately steep to very steep valley sides and rolling uplands.
The general shape of the topography at the site is shown by the contour
lines on Plate 1. In general, slopes over the majority of the site do not
exceed 30%. Several steep to very steep valley sides occur adjacent to
Cattle and Coulter Creeks and a few other areas with slopes greater than
30% occur in the rolling uplands which occupy the southeastern half of
the property.
C.1
The principal drainages crossing the area are Cattle and Coulter Creeks.
Both are small perennial mountain streams. In addition to these streams,
several irrigation ditches traverse the property. The majority of the
property is used as pastureland and for the cultivation of hay. Wheat was
under cultivation in the northwest corner of the property at the time of
our investigation. Native vegetation consists of grasses, sagebrush and
scrub oak. The only buildings on the property at the time of our investi-
gation was the ranch in the north -central portion of the property.
GEOLOGIC SETTING
The parcel is situated on a dissected plateau which lies between the
main valleys of the Roaring Fork River on the south and the Colorado River
on the north. Streams draining the plateau, such as Cattle Creek, have
eroded moderately deep to deep valleys below rolling upland surfaces.
Near -surface bedrock over the majority of the plateau are Tertiary to
Quaternary age volcanic rocks consisting primarily of basalt flows. The
volcanic rocks overlie sedimentary rocks of Pennsylvanian and Permian age.
The principal formations are the Maroon formation and Eagle Valley evaporite.
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
At the site investigated, bedrock exposed at the surface and encountered
in our exploratory holes consisted of volcanic rocks of Tertiary age and Te
noncemented sedimentary rock of probable tertiary age. The older Pennsyl-
vanian and Permian age bedrock formations do not crop out and were not
encountered in our exploratory holes. The majority of the Tertiary age
bedrock is covered by soil deposits consisting of slopewash, terrace
alluvium, and valley floor alluvium. The general distribution of bedrock
outcrops and soils at the site are shown on the geologic map, Plate I.
SUBSURFACE CONDITIONS
The general subsurface conditions at the site were investigated by
drilling 8 exploratory holes at the locations shown on Plate 1. Logs of
soil, bedrock and free water encountered in the holes are shown on Fig. 1
Both disturbed and undisturbed drive samples were taken in the field and
returned to our laboratory where their general engineering properties were
analyzed. A summary of laboratory test results is shown on Table I.
Soils: Soils are of several geologic origins. Soils consist of slopewash,
terrace alluvium, and valley floor alluvium. The slopewash is a thin, dense,
very clayey sand with scattered gravel and cobbles. The maximum thickness
of slopewash encountered in the exploratory holes was 6 feet.
Three low terrace remnants flank the main valley floor of Cattle Creek
and a higher terrace remnant occurs along the northern valley side of Cattle
Creek. The terraces are underlain by dense, granular alluvial soil con-
sisting of well rounded gravel and cobbles in a very clayey sand matrix.
Observation along stream banks and in exploratory holes indicates that the
terrace gravels are relatively thin and overlie either volcanic or sedimen-
tary bedrock. The valley floors of Coulter and Cattle Creek are underlain
5
by valley alluvium. No construction is proposed in these areas, therefore,
exploratory holes were not located here. We anticipate that these alluvial
soils will be similar in nature to the terrace alluvium flanking the valley
floors, but containing rnore fines.
The granular terrace alluvium is nonexpansive. The very clayey sand
slopewash has a moderate swell potential. Results of swell -consolidation
tests are shown on Fig. 3. Results of a gradation analysis of the terrace
alluvium are shown on Fig. 7.
Bedrock: Volcanic and sedimentary bedrock was observed along valley sides
and in road cuts. These rocks were also encountered in the exploratory
holes. The sedimentary bedrock consists of firm, noncemented, silty, fine
sandstone with occasional claystone and conglomerate beds. Three types of
volcanic rock were encountered: (1) lava flows, (2) volcanic mudflows,
and (3) water -deposited tuffs. Basalt lava flows crop out along the valley
sides adjacent to Cattle and Coulter Creeks. These Flows are made up of
extremely hard basalt with a widely spaced, blocky joint system. individual
rock blocks are on the order of 1 to 2 feet in dimension. The volcanic mud -
flows consist of angular basalt fragments to boulder size in a sandy silt
matrix. The mudflow deposits are firm but the matrix is not cemented. The
water -deposited tuffs consist of stratified gravel -size scoriaceous basalt
fragments which are moderately cemented.
Engineering Properties: Swell -consolidation tests indicate that the sand-
stone bedrock does not have an expansion potential. The claystone beds
show a moderate expansive potential. Both rocks will consolidate slightly
to moderately under wetting and loading. The volcanic mudflows have
relatively low natural densities. This depositlis nonexpansive but will
consolidate moderately under wetting and loading. Both.the water -deposited
-6
tuff and the lava flows will not present any expansion problems. Both of
these rocks should have negligible consolidation under loads of the magni-
tude associated with normal residential -type construction. Results of
swell -consolidation tests are shown on Figs. 3 through 7.
Ground Water: Free water was not encountered in our exploratory holes at
the time of drilling and we do not anticipate that shallow ground water
will be encountered in the proposed construction areas. Shallow ground
water probably occurs along the valley floors of Cattle and Coulter Creeks.
GEOLOGIC CONDITIONS AFFECTING THE PROPOSED CONSTRUCTION
There are no geologic conditions at the site which would constitute
a major hazard or render the proposed development infeasible, however,
certain conditions should be considered during planning and development.
Slope Stability: The only evidence of unstable slopes at the site was
observed along the steep valley side northeast of Exploratory
Hole No. 1.
A small landslide involving the clayey sand slopewash and underlying sand-
stone bedrock has taken place downslope from an irrigation ditch. The
location of the slide with respect to the irrigation ditch suggests that
leakage from the ditch has saturated the upper bedrock and soils, inducing
the small slope failure. The extremely steep slopes adjacent to Cattle and
Coulter Creeks are underlain by volcanic rocks which have a low susceptibility
for slope failures. We do not anticipate that unstable slopes will be a
major problem to future development provided that reasonable site grading
is done. Preliminary recommendations for site grading are presented in the
following section., In areas of steep slopes, slopes greater than 30%, we
recommend that specific building sites be investigated with respect to
slope stability.
-7 -
Shallow Ground Water and Flooding: The only areas which may have shallow
ground water and are susceptible to flooding are the valley floors of Cattle
and Coulter Creek. We understand that no construction is anticipated in
either of these areas.
Earthquake Potential: The site is in an area of low earthquake risk. Some
low to moderate earthquakes have occurred in the region during historic time.
.A11 buildings should be designed to resist lateral forces produced by earth-
quakes in accordance with Seismic Zone 1 of the Uniform Building Code.
POSSIBLE FOUNDATION TYPES
Spread footings and drilled piers will be feasible foundation systems
for lightly loaded residential structures. By utilizing minimum dead load
pressures, spread footings can probably be used in almost all the areas.
The most desirable foundation system for a specific structure should be
determined by an on-site investigation. Maximum allowable soil pressures
for spread footings are expected to range between 2,000 and 10,000 psf..
The higher pressures can only be used for structures founded entirely on
hard bedrock. Minimum dead loads nay be required for spread footings,
depending upon the swell potential of the foundation soils or bedrock. In
areas where bedrock is shallow, straight -shaft piers drilled into bedrock
cn be used. Drilled pier foundation will be the most suitable foundations
ior structures located in areas of potentially expansive soil or bedrock.
If possible, all foundations should have a common bearing stratum, i.e.,
the foundation should be located entirely on the natural soils, bedrock,
or structural fill.
SITE GRADING
We do not anticipate that extensive site grading will be necessary for
the preparation of building sites, roadways, or parking areas because of the
relatively gentle slopes which exist over the majority of the site. More
extensive site grading will be necessary for roadways or structures located
on the steeper slopes. In all areas, we recommend the following criteria be
used in preparing grading pians:
Permanent cut slopes should not exceed 20 feet in depth and be no
steeper than 2:1 (horizontal to vertical). Shallow temporary excavations
up to 10 feet will be stable at inclinations of 1:1 if well drained. Deeper
and steeper excavations are possible, however, we recommend that more exten-
sive grading be investigated on an individual basis. If seepage is encountered
in temporary or permanent excavations, an investigation is warranted to
determine if seepage will adversely affect slope stability. Good surface
drainage should be provided for all permanent cut slopes. These slopes and
other stripped areas should be protected against erosion by revegetation or
other means. Fills up to 20 feet high will be stable if inclinations of
2:1 (horizontal to vertical) are not exceeded and if the fills are properly
compacted and well drained. The ground surface underlying the fills should
be carefully prepared, highly organic topsoil and vegetation should be removed,
fills should be keyed into the steeper slopes, and all fills should be properly
compacted. If structural fill is used, careful attention to compaction will
be necessary for fill placed below footings. Like cut slopes, all fill slop's
should have good surface drainage and be protected against erosion. The
majority of the on-site soil and bedrock will be suitable for overlot;fiil.
The majority of the non -expansive sandstone bedrock and granular terrace
alluvium will be suitable for structural fill. When utilizing the natural
on-site soils and bedrock for fill, particles larger than 6 inches in
diameter should be removed prior to placing and compacting the fill. We
do not anticipate problems with wide excavations up to 20 feet deep in
the on-site soils and sedimentary bedrock. In these materials, excavation
can be done with a backhoe or other medium to heavy excavating equipment.
Hard sandstone bedrock may be difficult to excavate in confined trenches.
Some difficulties can be expected wiser► excavating the volcanic rocks.
Problems in excavating through the mudflows will occur when large, hard
basalt boulders are encountered. Deep excavation into the water -deposited
tuffs and lava flows will require ripping equipment and possibly blasting.
LEACHING FIELDS
Percolation tests were conducted in shallow holes drilled adjacent to
the 8 exploratory holes. The tests were conducted in accordance with stan-
dards established by the Department of Health, Education and Welfare. Results
of the percolation tests are presented on Table II. Percolation rates ranged
from 10 minutes per inch to 360 minutes per inch with the majority of the
tests showing a rate greater than 60 minutes per inch. The percolation
tests indicate that the majority of the upper soil and rock materials have
suitable percolation rates for standard leach field type septic systems.
Because of the diversity of soil and bedrock materials at the site, no
general statement can be made at this time on the suitability of a specific
site for a standard leaching field type septic system. Based on the tests
conducted, it is our opinion that the majority of building sites will have
suitable soil conditions for leaching fields. Specific on-site investigations
should be conducted.
- 10-
ADDITIONAL
0-
ADDITIONAL INVESTIGATIONS
This report is preliminary and suitable only for general design and
planning. In our opinion, based on our present knowledge of the site geology,
there are no conditions which would constitute a major hazard or render the
project infeasible. Because of the limited scope of this investigation, we
recommend a specific study be done to establish design criteria for founda-
tions, and leaching field design.
CHEN AND ASSOCIATES, INC.
By
Reviewed By
RGM/med
Ralph G. Mock, Engineering Geologist
Richard C. Hepworth, P. E.
1
1
1
1
11
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Li
10
15
'0 20
1
1
1
1
1
1
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25
30
L 35
Hole 1
4
18/9
WC=12.1
DD=103.2
LL=46
-2=27
00=41
wSS=.03
:30/9
WC=4.2
DD=109.7
P1=NP
-200=19
28/9
22/6
Hole 2
r
i 11/12
WC=12,0
D0=72.2
WSS= <. 001
45/7
80/8
Hole 3
Hole 4
16/12
23/9 Z
WC=12.0
D0=115.6
-200=25
1 y
21/9
30/6
70/6
L
16/12
WC=10.2
DD=85.1
18/5
32/6
|
1
I
1
1
1
1
1
18/12
21/9
VC=22_8_
DD=l0J.l
12/9,10/3
70/9
Hole 6
26/12
WC=8.0
00=112.2
LL=3l
PI=}l
-200=37
35/6
32/9
42/l2
Hole 7 Hole 8
25/9
32/6
30/9
WC=8.8
DD=92,2
WSS=<0Ol
18/12
WC=ll.9
DD=97.7
30/6
38/9
LOGS OF EXPLORATORY HOLES Fig, 1
�
20
25 -
LEGEND:
NOTES:
(1)
(2)
(3)
(14)
7 (,)
Topsoil, sandy clay with scattered gravel and cobbles, moist,
soft, moderately organic, dark gray.
Sand (SC -CL) very clayey with scattered gravel and cobbles, moist,
dense, light brownish red.
Sand and gravel (SC -GC), very clayey, slightly moist to dry,
dense to very dense, light brownish red.
Sandstone, fine grained, silty with occasional conglomerate and
claystone lenses, moist, firm, noncemented, brownish red.
Conglomerate, moist, hard, noncemented, brownish red.
Volcanic rocks made up of extremely hard, blocky basalt flows.,
very dense, noncemented volcanic mud flows; and hard moderately
cemented water -deposited tuft, light to dark gray.
Undisturbed drive sample, the symbol 18/4 indicates that 18 blows
of a 140 lb. hammer falling 30 Inches were required to drive the
sampler 4 inches.
Disturbed standard split spoon.
Test holes were drilled on May 26 and 27, 1977 with a 4 -inch diameter
continuous"flight.power auger.
Approximate location of Exploratory Holes are shown on Plate I.
No free water was found in test holes at th3 time of drilling.
WC a Water Content (i);
DD = Dry Density (pcf);
WSS xi Water Soluble Sulfate (%).
LL tts Liquid Limit (%);
Pi = Plasticity Index (o);
NP Nonplastic;
-200 = Percent Passing No. 200 Sieve.
LEGEND AND NOTES Fig. 2
1
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Fig. 14
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100
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CHEi AND ASSOCIATES
Cor:vltin-g Soil cnd Foundaticn En in3EA
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DIAMETER OF PAR `i,,LE IX MILLF0'0TER3
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SAMPLE or Clayey Sand & Gravel FROM Hole 6 at depth 4'-0'I.
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af
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TABLE II
PERCOLATION TEST RESULTS
Page 1 of3
WATER DEPTH WATER DEPTH
HOLE HOLE LENGTH OF AT START AT END DROP IN AVERAGE
NO. DEPTH INTERVAL OF INTERVAL OF INTERVAL WATER LEVEL PERCOLATION RATE
(In.) (Min.) (Inches) (Inches) (inches) (Min./Inch.)
1 36.0 10 19.50 18.50 1.00
10 18.50 17.75 0.75
10 17.75 17.00 0.75
to 17.0o 16.50 0.50
i0 16.50 16.25 0.25
l0 16.2.5 16.00 0.25
to 16.0o 15.75 0.25
10 15.75 15.50 0.25
to 15.50 15.25 0.25
to 15.25 15.0o 0.25
to 15.0o 14.75 0.25
32.0 10 9.00 7.50 1.50
10 16.00 11.50 1;;,50
10 11.50 9.50 2.00
10 9.50 8.50 1.00
10 8.50 7.50 • 1.00
10 7.50 6.50 1.00
10 17.75 14.0o 3.75
10 14.00 11.25 2.75
10 11.25 10.25 1.00
10 10.25 9.25 1.00
to 9.23 8.25 1.n0
60.0 10 33.00 31.50 1.50
io 31.50 30.50 1.00
10 30.50 29.25 1.25
10 29.25 28.50 0.75
10 28.50 27.75 0.75
10 27.75 27.25 0.50
10 27.25 26.75 0.50
to 26.75 26.00 0.75
l0 26.00 25.50 0.50
t0 25.50 25.25 0.25
10 25.25 24.75 0.50
30 42,5 10 25.50 24.25 1.25
10 24.25 23.50 0.75
10 23.50 22.50 1.00
10 22.50 21.75 0.75
10 21.75 21.25 0.50
10 21.25 20.75 0.50
10 20.75 20.25 0.50
' 10 20.25 20.00 0.25
10 20.00 19.50 0.50
10 19.50 19.25 0.25
10 19.25 19.00 0.25
#14,701
40 Min./(n.
10 Min./In.
24 Min./In.
0 Mtn./In.
' TABLE I/
1
PERCOLATION TEST RESULTS
Page 2 of 3
WATER DEPTH WATER DEPTH
II HOLE HOLE LENGTH OF AT START AT END DROP IN AVERAGE
NO. DEPTH INTERVAL OF INTERVAL OF. INTERVAL WATER LEVEL PERCOLATION RATE
(in.) (Min.) (Inches) (Inches) (inches) (Min./inch.)
II 4 37.5 10 22.00 21.50
10 21.50 21.50
I
10
10 21.50 21.00
21.00 21.00
10 21.00 19.75
10 19.75 19.00
10 19,00 18.50
10 18.50 18.25
10 18.25 18.00
10 18.00 17.50
30 17.50 17.00
30 17,-00 17.00
30 17.00 16.75
1
1
1
1
1
1
1
1
1
1
1
1
1
1
43.5 10 24.00 24.00
20 24.00 214.00
30 24.00 24.00
30 24.00 24.00
30 -24.00 23.75
30 23.75 2375
30 23.75 23.50
30 23.50 23.50
30 23.50 23.50
34.0 10 16.00 15.50
10 15.50 15.00
10 15.00 14.75
10 14.75 14.50
15 14.50 14.00
10 14.00 13.75
10 13.75 13.25
30 13.25 12.00
30 12.00 10.50
30 10.50 9.25
32.5 15 19.00 17.50
10 17.50 17.00
10 17.00 16.25
10 16.25 15.75
30 15.75 14.50
30 14.50 13.50
30 13.50 12.75
#14,701
0.50
0.00
0.50
0.00
1.25
0.75
0.50
0.25
0.25
0.50
0.50
0.00
0.25
0.00
0.00
0.00
0.00
0.25
0.00
0.25)0.00
O.00J
0.50
0.50
0.25
0.25
0.50
0.25
0.50
1.25
1.50
1.25
1.50
0.50
0.75
0.50
1.25
1.00
0.75
120 Min./In
350 Min./1n.
AL3 Min/In:
30 Min./In.
1
1
1
TABLE I1
PERCOLATION TEST RESULTS
Page 3 of 3
II_.._ WATER DEPTH WATER DEPTH
HOLE HOLE LENGTH OF AT START AT END DROP IN AVERAGE
N0. DEPTH INTERVAL OF INTERVAL OF INTERVAL WATER LEVEL PERCOLATION RATE
(In.) (Min.) (Inches) (Inches) (Inches) (Min./Inch.)
8 0 10 28.50
5 28.25
10 28.25 27.75 0.50
II10 27.75 26.75 1.00
10 26.75 26.00 0.75
10 26.00 25.25 0.75
II 10 33.50 32.00 1.50
10 32.00 30.25 1.75
10 30.25 29.00 1.25
II
10 29.00 28.00
27.25 1.00
10 28.00 0.75
10 27.25 26.50 0.75 12 Min./In.
1
1
1
1
1
1
1
1
1
1
1
;/34, ,Di
RICHARD D. LAMM
Governor
•
C.J. KUIPER
State Engineer
DIVISION OF WATER RESOURCES
Department of Natural Resources ` JO
1313 Sherman Street - Room 818
Denver, Colorado 80203 (; 1979
Administration (303) 839-3581
Ground Water (303) 839-3587
July 6, 1979
Mr. Ray Baldwin, Director
Garfield County Planning Department
2014 Blake Avenue
Glenwood Springs, CO 81601
Re: Cattle Creek P. U. D.
Filing No. 1
Dear Mr. Baldwin:
This is to acknowledge receipt of preliminary plan material pertain-
ing to the above referenced subdivision. As requested, we have reviewed
the water supply plan and various decrees of the Water Court regarding the
water supply planning. Based upon this information, we have no objection
to the approval of the subdivision provided the Homeowners Association
owns and operates the water system in accordance with the conditions set
forth in the decree in Case No. W-3496.
JAD/HDS:mvf
cc: Lee Enewold, Div. Eng.
Ralph Stallman
Land Use Comm.
Ver truly yours,
a,
Jeris A. Danielson
puty State Engineer
STATE OF COLORADO •
Richard D. Lamm, Governor
DEPARTMENT OF NATURAL RESOURCES
DIVISION OF WILDLIFE
Jack R. Grieb, Director
6060 Broadway
Denver, Colorado 80216 (826-1192)
5 July 1979
Ray Baldwin
Planning Director
Garfield County Planning Department
2014 Blake Avenue
Glenwood Springs, Colorado 81601
:9 —77',-----
,1---
--
Ji: %./LiI� tf t .;
Gliiiiigg0 G{[, it L /`t
ER
Dear Mr. Baldwin:
I have reviewed the preliminary plan for the Cattle Creek Ranch
Planned Unit Development. My last contact with Ron Liston on
this particular situation occur ed in 1977 and at that time we
discussed the following:
1) The area in question is primarily intermediate winter range
and migration routes for Mule Deer and recently winter range for
Elk.
2) We discussed the need for strict dog control and limitations
on fencing height and construction, rarticularly boundary fenc-
ing obstruction to migration.
3) I felt at that time, and do so more strongly now, that horses
pastured and maintained on 2-5 acre lots will decimate the veget-
ation, lead to rapid erosion of the topsoil on the property, and
create an eyesore that the owner and his neighbors will find
most undesireable. All livestock should be restricted to lands
suitable for either dry -lot or irrigated rasture.
As long as these points are adequately covered in the covenents
for the P.U.D., I would offer no further comment at this time.
Sincerely y urs,
,,,_ A(%--f-t
DEPARTMENT OF NATURAL RESOURCES, Harris Sherman, Execute Director • WILDLIFL COAMdams, DWM ibbut,vernon C. Williams, Chairman
Thomas Farley, Vice Chairman • Sam Caudill, Secretary • Jean K. Tool, Member • Roger Clark, Member
Jay K. Childress, Member • Dean Hull, Member • Dean Suttle, Member
RICHARD D. LAMM
GOVERNOR
r>
COLORADO GEOLOGICAL SURVEY
DEPARTMENT OF NATURAL RESOURCES
715 STATE CENTENNIAL BUILDING — 1313 SHERMAN STT. `" /579
DENVER, COLORADO 80203 PHONE (303) 839-2611 14:11
Mr. Ray Baldwin
Garfield County Planning Department
Glenwood Springs, CO 81601
Dear Mr. Baldwin:
June 27, 1979
JOHN W. ROLD
Director
RE: CATTLE CREEK PUD,
FILING #1, GARFIELD
COUNTY
We have reviewed the preliminary plat and attendant information on
the above referenced subdivision. Geologic conditions could affect
the design and placement of on -lot sewage disposal systems. These
conditions include seasonally high ground -water levels, soil
composition, and shallow depth to bedrock. Borings in the Chen and
Associates report show a shallow depth to bedrock for 50 percent of
the borings. Additionally, soils in the area may be subject to
settlement upon wetting (hydrocompaction), which may change leach
field percolation rates or cause a malfunction of the disposal
system. We recommend that the on -lot disposal systems be designed
by qualified personnel and that this requirement be noted on the
final plat.
If we can be of further assistance in the review of this subdivision
application, please contact us.
WRJ/vt
cc: Land Use Commission
Sincerely,
Wales R. Junge
Engineering Geologist
GEOLOGY
STORY OF THE PAST ... KEY TO THE FUTURE
t
COLORADO DEPARTMENT OF HEALTH
DATE:
SUBJECT:
TO:
Co.
1079
4210 EAST 11TH AVENUE • DENVER, COLORADO 80220 • PHONE 32d4333
Frank Traylor, M.D., Executive Director
June 15, 1979
NON -STATE ASSISTANCE
REVIEW AND COMMENTS
Mr. Ray Baldwin
Planning Director
Garfield County Planning Department
2014 Blake Avenue
Glenwood Springs, CO 81601
PROJECT TITLE: Preliminary Plat - Cattle Creek PUD - Phase I and II
STATE IDENTIFIER:
NA
COMMENTS: July 9, 1979 (due date)
Air Pollution Control - The Air Pollution Control Division has no specific
regulations covering subdivision development outside the major metropolitan
area. However, the Division would recommend consideration of the air quality
impacts of developments of this magnitude. (Construction Phase) - Particu-
lates (dust, dirt, diesel emissions) are generated during earth moving, overlot
grading, wind erosion, and dirt "kick -up" by vehicles on unpaved areas. These
emissions can cause short-term violations of the Federal and State primary
(health) standards for particulates. Some actions which can be taken to re-
duce the level of particulate emissions during the construction phase of this
operation are the following: 1) use of water to minimize dust emissions
during earth moving operations and on heavily travelled roadways, 2) remove
top soil and vegetation only as the area is ready for development, 3) revege-
tate areas as soon as possible to minimize wind erosion, 4) investigate the
use of soil stabilizers on heavily travelled temporary roadways, 5) clean up
mud and dirt tracked onto improved roadways to minimize reentrainment of dust,
and 6) use a water truck to minimize wind erosion during high wind situations.
(Development Phase) - Following development of the Cattle Creek Ranch, the
major sources impacting air quality will probably be wind erosion and automo-
bile traffic. If the major roadways and commercial parking areas are unpaved,
substantial particulate emissions can be generated. With 109 dwelling units,
SOC -3, Jan 79
Name, Title
Micki Barnes, Program Administrator
• •
Preliminary Plat - Cattle Creek PUD - Phase I and II
the average daily particulate pollution generated would be 1200 pounds of
particulates per day. Wind erosion from stripped areas can also have a
substantial impact on the level of particulate emissions.
Some actions which can be taken to minimize the air quality impact of this
development are the following:
1. Pave all roadways which have an average daily traffic
count in excess of 100 vehicles per day.
2. Pave all parking areas which have an average daily useage in
excess of 100 vehicles per day.
3. Revegetate any stripped open space.
MB/DED/pl
• •
Roaring Fork School District RE -1
P.O. Box 820
Glenwood Springs , Colorado 81601
Telephone (303) 945-6558
June 12, 1979
Mt. Ray Bat2dwin
Gans.%etd County Rearming D.uceeton
2014 B.ea.ke Avenue
G.2enwood Spn.ingb, Co.2okado 81601
R E : Cat -tee Creek PUD Phab e 1 and Phase 2
NICHOLAS R. MASSARO, Superintendent
JUN 3 /979
<<�
Vit' nfiFR
Dean Ray:
The Roax i ng Fonk School ai.4tk i.et Board Education d.i e.u44 ed
.the Ca to Creek PUD at the kegu.2an meeting on June 11, 1979.
They ane keque4tLng that the deveJ.opek4 bet azide one ae.ice of
gkound 6ok each 6iity un.c is ox money -Ln .e i.eu of .
The 4choo.2 d i4tni t ae4o has coneenn4 kegakd.ing bub 4e4v.ice
.into the bubd.iv.i 6 ion, and the deveeope'cb and punehabe i showed
be awake that bus 4exv.ic.e wit not be paotuded which extend4
noute4 .into the 4ubdivi4 ion.
S.incexety youxb,
NRM/ht
ie ot.as R. Ma4bano
�c/1 a aitO