HomeMy WebLinkAbout1.02 Application Part 3LTG Policy No. CTHH2246I3
Our Order No. GW224613
LEGAT DESCBIPTION
3) N 70 DEGREES 0t' 01" E A DISTANCE OF 292.62 FEET;
4) N 43 DEGREES 09' 09'E A DISTAI.{CE OF 2t9.32 FEET;
5) N 30 DEGREES t5' 23' E A DISTAI{CE OF 347.3t EEET;
6) N 39 DEGREES 33' 3s" E A DTSTANCE OF 298.33 FEET;
7) N 55 DEGREES 14' 39'E A DISTANCE OF 298.20 FEET;
8) N 73 DEGREES 08' 07" E A DISTANCE OF 265.4t FEET;
9) S 84 DEGREES 57' 03" E A DISTAI{CE OF 249.97 F9ET;
l0) s 57 DEGREES 59' 41" E A DTSTANCE OF 235.85 FEET;
1l) s 47 DEGREES 45' 29" E A DISTANCE OF 256.33 FEET;
12) s 39 DEGREES 49' 03" E A DISTANCE OF 418.28 FEET;
13) s 29 DEGREES 05' 00, E A DISTANCE OF 293.00 FEET;
14) s 36 DEGREES 34'00" E A DISTANCE OF 33O.OO FEET;
15) S 4I DEGREES 30' OO" E A DISTANCE OF 225.@ FEET TO A POINT ON THE EAST LINE
OF SECION 29; THENCE S OO DEGREES 27, Sf w ALONG THE EAST LrNE OF SAID
SECTION 29 A DISTANCE OF 623.64 FEET TO THE POINT OF BEGINNING.
COUNTY OF GARFIELD STATE OF COLORADO
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WATER CbNSuRvr.,.. :
PLAN OF AUGMENTATION
LOCATION MAP
,tr4aai HEo,ry.r'E
REVISED 5I2TI98 contracu + 990220CRC(a)
Map ID I 307
Date Activated L /28 /99
WEST DIVIDE WATER CONSERVAIICY DISTRICT
WATER ALLOTI4EMT COMTRACT/LEASE
Narne of Applicanl:C"tY"lI Ranch Cornpany, Lt€, c/o Balconrb & Green, p.C., Iori J.M. Satterfield
Quanti ty of tlater in Acre Feet: 38.12 AF
Applicant, hereby applies to the l{est Divide t{ater Conservancy District. a political subdivision of the State
of Colorado. organized pursuant to and existing by virtue of C.R.S. 1973, 537-45-101, et seo., (hereinafter referred to as
the'District") for an allotrnent contract/lease to beneficially and perpetually use water or water rights ourned. leased. or
hereafter acquired by the Distrjct. By execution of this contract/lease and the attached application, Applicant hereby agrees
to the following terms and conditions:
l. l/ater Riqhts: Applicant shall own water rights at the point of diversion herein lawfully entitling
Applicant to divert water, v'hich will be supplemented and augrented by water leased herein. If Applicant intends to divert
through a well. it must be understood by Applicant that no right to divert exists until a valid well permit is obtained from
the Colorado 0ivision of llater Resources.
2. Ouantitv: Hater applied for by the Applicant in the amount set forth above shall be diverted at
Applicant's point of diversion from the District's direct flow water rights. and when water is unavailable for diversion
pursuant to administration by the Colorado State Engineer during periods r.hen said direct flowwater right is not in priority.
the 0istrict shall release for the use of Applicant up to said quantity in acre feet per year of storage water ouared or
controlled by the District. It is understood that any quantity allotted from direct flow, storage or othenrise. to the
Applicant by the District will be limited by the priority of the District's decrees and by the physical and legal availability
of water from District's sources. Any quantity al)otted will oniy be provided so Iong as water is available and the Applicant
fu)ly corplies with all of the terms and conditions of this contract/lease. The District and the Applicant recognize that
some of the 0istrict's decrees may be in the narp of the Colorado River tiater Conservation District. and the ability of the
District to allot direct flow right to the Applicant may be dependent on the consent of the Colorado River t{ater Conservation
District. If at any time the Applicant determines it requires less water than the amount herein provided. Applicant may so
-^! i.. n: .- i f,loi; i :' ,, ..,r,u u.rc orrr,rulll of water ai lOtted ui.,*
accordance with such notice. Rates shall be adjusted accordingly in following water years only.
3.AnyandallwaterallottedApplicantbytheDistrict
shall be used for the following beneficial use or uses: municipal. domestic and related uses. or connercial (except to the
extent that Ruedi Reservoir water may not be available for connercial as that term is defined on Page 5 of Contract No. 2-07-
70-tJ0547 between the United States and the West Divide I'later Conser^vancy District). Applicant's beneficial use of any and
all water allotted shall be within or through facilities or upon land owned. leased, operated. or under Applicant's congrol.
4- Decrees and Deliverv: Exchange releases made by the District out of storage from Ruedi Reservoir
and Green t''lountain Reservoir, or other r,,orks or facilities of the District. or from other sources available to the 0istrict,
shall be delivered to the Applicant at the outlet unrks of said storage facilities or at the decreed pojnt of diversion for
said other sources. and release or delivery of water at such outlet or points shall constitute performance of the 0istrict's
total obligation. Delivery of water by the District from Ruedi Reservoir or Green Mountain Reservoir shall be subject to
the District's lease contracts with the United States Bureau of Reclamation. Releases from other facilities available to
' District shall be subiect to the contracts, laws. rules. and regulations governing releases therefrom. Furthemrcre. the
, Oistrict hereby expressly reservEs the right to store water and to make exchange releases from structures that may be built
or controlled by the District in the future. so long as the water service to the Applicant pursuant to this agreenent. is
not impaired by said action. Any quantity of the Applicant's allocation not delivered to or used by Appiicant by the end
of each water year (0ctober 1), shall revert to the water supplies of the District. Such reversion shall not entige
Applicant to any refund of payment made for such water.
l,Jater service provided by the District shail be Iin'i :,' .,.. +-i.: annunt of water available in priority at the
original point of diversion of the 0istrict's applicable water right, and neither the District. nor those entitled to utilize
the District's decrees. may call on any greater amount at new or alternate points of diversion. The District shall nequest
the Colorado Division of l{ater Resources to estimate any conveyance losses betuleen the original point and any alternate point,
and such estimate shall be deducted from this arpunt in each case.
5. Alternate Point of Diversion and Plan of Auomentatjon: Decrees for alternate points of diversion
of the District's water rights or storage water may be required in order for Applicant to use the water service conterplated
hereunder. 0btaining such decree is the exclusive responsibility of Applicant. The 0istrict reserves the right to review
and approve any conditions uhich may be attached to judicial approval of said alternate point of diversion as conterplated
or necessary to serve Applicant's facilities or lands. Applicant acknowledges and agrees that it shall be soiely responsible
for the procedures and legal engineering costs necessary for any changes in water rights contemplated herein, and further
agrees to indemnify the 0istrict from any costs or losses related thereto. Applicant is solely responsible for providing
rrcrks and facilities necessary to obtain/divert the waters at said alternate point of diversion and deliver them to
Applicant's intended benefjcial use. Irrespective of the amount of water actually transferred to the Applicant's point of
diversion. the Applicant shall make annual payments to the Oistrict based upon the amcunt of w'ater allotted un@r this
contract/l ease.
In the event the Applicant intends to apply for an alternate point of diversion and to develop an
augmentation plan and institute legal proceedings for the approval of such augrnentation plan to allowtheApplicant to utilize
the water allotted to Applicant hereunder, the Applicant shall give the District written notice of such intent. In the event
the Applicant develops and adjudicates its own augmentation plan to utilize the water allotted hereunder. Applicant shall
not be obligated to pay any arDunt under Paragraph 18 below. In any event. the District shall have the right to approve or
disapprove the Applicant's augmentation plan and the Applicant shall provide the District copies of such plan and of all
pleadings and other papers filed with the water court in the adjudication thereof.
6. Contract/lease Pavment: Non-refundable, one tinre administrative charge, in the anrount determined
lhe District.
-.:io, s of ihe 0isLricc fr.orrr Lr,,e u- .-:. :--.,.- :r.., Lr,c applicatioi for consiuer'at1r,,. uy
Annual payrent for the water service described herein shall be determined by the Board of Directors of the
District. The initial annual payment shall be made in full, within thirty (30) days after the date of notice to the Applicant
that the initial payment is due. Said notice will advise the Applicant. among other things, of the water deiivery year to
which the initial payrnent shall apply and the price which is applicable to that year.
Annual payrents for each year thereafter shall be due and payable by the Applicant on or before each
January 1. If an annual payrnent ts not made by the due date a flat $50 late fee wili be assessed. Final written noLice prior
to cancellation will be sent certified mail, return receipt requested, to the Applicant at such address as may be designated
by the Applicant in writing or set for^th in this contract/lease or application. l,later use for any part of a wateryear shall
require payment for the entire water year. Nothing herein shall be construed so as to prevent the District from adjusting
the annual rate in its sole discretion for future years only.
If payment is not made within fifteen (15) days after the date of said written notice, Applicant shall at
District's soleoption haveno further right. titleor interest underthis contract/leasewithout further notice. anddelivery
may be irnpdiately curtailed. The allotment of water, as herein made. may be transferred. Ieased. or otheruise disposed of
at the discretion of the Board of Directors of the District.
Upon cancellation of this water allotnrent contract/lease with the District, the District shall notify the
Division of l{ater Resources offices in Denver and Glenunod Springs. The Division of tlater Resources may then order cessation
of all water use.
7. Additional Fees and Costs: Applicant agrees to defray any expenses incurred by the District in
connection with the allotment of water rights hereunder. including, but not limited to, reinbursement of legal and engineering
costs incurred in connection with any water rights and adjudication necessary to allow Applicant's use of such allotted water
ri ghts .
8. Assionment: This contract/lease shall inure to the benefjt of the heirs. successors or assigns of
the parties hereto. Any assigment of the Applicant's rights under this contract/lease shall be subject to. and must comply
with, such requirements as the 0istrict may hereafter adopt regarding assignrent of contract/lease rights and the assunption
of contract/lease obligations by assignees and successors. Nothing herein shall prevent successors to a portion of
Applicant's property from applying to the 0istrict for individual and separate alloBrent contracts/leases. No assignment
shall be recognized by the District except upon completion and filing of proper forms for change of ownership.
Upon the sale of the real property to tdrich this contract/lease pertains. Applicant has a duty to make buyer
aware of this contract/lease and proper forms for change of ownership must be corpleted.
9. 0ther Rules: Applicant shall be bound by the provisions of the t{ater Conservancy Act of Colorado:
by the rules and regulations of the Board of Directors of the District: and all amendments thereof and supplerents thereto
and by all other applicable law.
10. Ooeration and Maintenance Aoreernent: Applicant shall enter into an'Operation and l'laintenance
Agreenent" with the District under tenns and conditions determined by the board of Directors of the District. if and rahen.
the Board of said District determines in its sole discretion that such an agreeflpnt is required. Said agreerent may contain.
bW shall not be limited to. provisions for additional annual rnnetary consideration for extension of District delivery
services and for additional adninistration. operation. and maintenance costs; or for other costs to the District riich may
arise through services made available to the Applicant.
11. Chanoe of Use: The District reserves the exclusive right to review, reapprove or disapprove any
proposed change in use of the water allotted hereund'er. Any use other than that set forth herein or any lease or sale of
the water or water rights allotted hereunder without the prior written approval of the District shall be deenpd to be a
material breach of this contract/lease.
L2. Use and Place of Use: Applicant agrees to use the water in the manner and on the property described
in the docr.rments submitted to the 0istrict at the time this contract/lease is executed, or in any operation and maintenance
agreement provided by Applicant. Any use other than as set forth thereon or any lease or sale of the water or water rights
herein, other than as permitted in paragraph I above. shall be deened to be a material breach of this agreerpnt.
13. Title: It is understood and agreed that nothing herein shall be interpreted to give the Applicant
any equitable or legal fee title interest in or to any water or water rights referred to herein.
14. Conservation: Applicant shall use connnniy accepted conservation practices with respect to the water
and water rights herein, and hereby agrees to be bound by any conservation plan adopted hereafter by the 0istrict for use
of District owned or controlled water or water rights.
15. Restrictions: Applicant shall restrict actual diversions to not exceed the Contract/Lease arpunt,
wttich provides water (on the formula of one acre foot per drrelling) for ordinary household purposes inside one single family
dulelling, the watering of dornestic livestock. fire protection. and the irrigation of up to 6.000 square feet of latn and
garden.
Applicant shall also coryly with all restrictions and limitations set forth in the ulell permit obtained from
the Colorado Division of t{ater Resources.
t{atering of livestock shall be restricted to Applicant's domestic animals not to be used for cormrcial
purposes unless Applicant obtains approval from the Colorado 0ivision of !{ater Resources for cormercial use/livestock watering
at a horse boarding facility, provided that in no event shall actual diversions exceed the arpunt of water provided by this
Contract/Lease.
Violation of this paragraph 15 shall be deenred to be a material breach of this Contract/Lease.
16. llell Permit: If Applicant intends to divert through a well, then Applicant must proviG to District
a copy of Applicant's valid well permit before Oistrict is obligated to deliver any mter hereunder.
17 - Heasurino Deviee or Meter: Appl icant agrees to provide. at its own expense. a total izing flow meter
with renpte readout to continuously an<l accurately reasure at all times all mter diverted pursuant to the terms of
Applicant's water right and the terms of this contract/lease. Applicant agrees to provide accurate readings from such device
or meter to District upon District's request. Applicant acknowledges that failure to coflply with this paragraph could result
in legal action to terminate Applicant's diversion of water by the State of Colorado 0ivision of t{ater Resources. By signing
this contract. Applicant hereby specifically allows District, through its authorized agent. to enter upon applicant's property
during ordinary business hours for the purposes of determining applicant's actual use of water.
18. Reoresentations: By executing this contract/lease. Applicant agrees that it is not relying on any
legal or engineering advice that fuplicant may believe has been received from the District. Applicant further acknowledges
that it has obtained all necessary legal and engineering advice from Applicant's own sources other than the District.
Applicant further acknowledges that the District makes no guarantees. warranties, or assurances whatsoever about the quantity
,.. ....,:r.lqr;t to this contract,/lease. irroL-_ -, . ,. ' ;. r_ pt r.rue th€ water contracted
for herein. no damages may be assessed against the District, nor may Applicant obtain a refund from the District.
19. Costs of l{ater Court Filino and Auomentation Plan: Should the District, in its ormn discretion,
choose to include Applicant's contract/lease herein in a water court filing for alternate point of diversion or plan of
augmentation, then Applicant hereby agrees to pay to the District. when assessed. an additional fee representing the
District's actual and reasonable costs and fees for Applicant's share of the proceedings.
20. Bindino Aqreement: This agreerent shall not be corplete nor binding upon the Oistrict unless
attached hereto is the form entitled "Application and Data Form to Lease l{ater From Hest Divide Water Conservancy District'
fully colpleted by Applicant and approved by the District's engineer. Said attachnrents shall by this reference thereto be
incorporated into the terms of this agreerent.
t(t
2L. [,IATNiNq: IT IS THE SOLE RESPONSIBILITY OF THE APPLICANT TO OBTAIN A VALID TIELL PER'.IIT OR OTHER }IATER
RIGHT IN ORDER T0 DMRT I'IATER. INCLUDING THE uATER ACOUIRED UNDER THIS C0NTRACT/LEASE. IT IS THE CONTINUING DUTY OF THE
APPLICANT TO MAINTAIN THE VALIDITY OF THE I,IELL PERIIIT OR }IAIER RIGHT INCLUDING FILING FOR EXTENSIONS OF PERHITS, FILING IIELL
COI.IPLETION REPORTS, FILING STATEMENTS OF EENEFICIAL USE, OR OTHERIIISE LAIIFULLY APPLYING THE XATER TO BENEFICIAL USE ON A
REGULAR BASIS IIITHOUT UASTE.
Appl i cant:
STATE OF COLOMDO
COUNTY OF GARFIELD
)
) ss.
)
,l?*
t{itness my hand and off.icial seal.
My cormission expires:TtYtL
ORDER
After a hearing by the Board of Directors of the ltest Divide t{ater Conservancy District on the application,
it is hereby OROERED that said application be granted and this contract/lease shall be and is accepted by the District.
I{EST DIVIDE WATER CONSERVANCY DISTRICT
ATTEST:
A-
accompany this contract/lease:
'1.-,-, l? ,l't I 1/ Dut"Secretary
This contract/lease includes and is subject to the terms and conditions of the following documents which must
1.
2.
3.
l,lap showing location of poinL of diversion (use map provided)
Application and Data Form fully compleied and signed
frErn"uB
KELLY J.
KING
Appl i Green, P.C.
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D TE 2-1-1999
CORYELL RANCH PUD
WATER RIGHTS LOCATION MAPii:i:RESOURCE
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JOB NUMBR;752-2.0 DMWN SY: DI-S F|LE: D\CUENN752\CORYETIDWG
CHECKED BY: JMC SCALE 1'=600'
FIGURE
1
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FIESL]UFICE
ENGINEEFIING
Mr. lan Hause
Coryell Ranch Company LLC
9929 Hwy 82
Carbondale, CO 81623
ING
January 28, 1999
RE: West Divide Water Conservancy District - Water allotment Contract Application
Dear lan:
Today the Board of Directors of the West Divide Water Conservancy District approved
the Coryell Ranch Company LLC application. lt was good that I attended the meeting,
otherwise the application would have been tabled for a month (along with all other
applications before the Board) while they wrestled with some contract language totally
unrelated to the Coryell situation.
When executed, the contract will allow Coryell Ranch Company LLC to obtain wel!
permits for the Coryell Ranch wells. The West Divide contract, together with the well
permits, provides proof of a legal water supply as required by Garfield County. I
recommend that Coryell Ranch Company LLC finalize the contract with West Divide
as soon as possible.
To finalize the contract West Divide needs to be paid for water for the 1999 calendar
year. The charges are:
RecordingFee: $ 11.00
Water Cost; 38.12 AF X $105 / AF: $ 4,002.60
Unit cost (for vacant lots); 75 x $5 / lot: $ 375.00
TOTAL $ 4,388.60
The check should be made out to the West Divide Water Conservancy District
mailed to them at their Rifle address (see attached fee schedule for the address).
Please reference Coryell Ranch on the check so West Divide knows where is goes. lf
they can get the check next Monday the contract can go out of their office on
Tuesday. We need the contract as soon as possible in order to obtain well permits
before the PUD submittal date. By statute, the State has 45 days to turn around well
permit applications. They usually take all their 45 days.
When the plan for augmentation is decreed (Case No. 98CW310) the contract amount
can be reduced to approximately 6.85 acre feet (depletion amount) thereby reducing
future annual costs. I have attached a West Divide fee schedule for your use so you
can determine what your future costs will be. lf you have any questions about it call
and we can go over it. That will be a lot easier than explaining it here.
Consulting Engineens and Hydnologists
gOsColonadoAvenueIGlenwoodSpnings,COEl6()lIt97O)945-6777aFaxl9TO)945-1137
Mr. lan Hause
Coryel! Ranch Company LLC
Page No. 2
As always, if you have any questions give me a call.
Sincerely,
Resource Engineeling, lnc.
/rL /?- /-*'-
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John M. Currier, PE
Water Resources Engineer
JMC/jmc
file: 752-2.3 Firc:752\2.o\wdwadrtr.wpd
attachment
cc: Lori Satterfield, Esq.
Larry Green, Esq.
January 28, 1999
::::iRESO U RC EtltltIIIIIE N G I N E E R I N G I N C
CORYELL RANCH
ENGINEERING REPORT
MARCH 1999
Prepared by
Davicl M. Kotz, P.E.
SCHMUESER GORDON MEYER, INC.
118 West 6th Street, Suite 200
Glenwood Springs CO 81601
cover\9808 1 c
--
TABLE OF CONTENTS
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TABLE OF CONTENTS
Paqe
SECTION 1. DRAINAGE
A.
B.
c.
D.
sEcTtoN 2.
A.
B.
c.
D.
E.
F.
SECTION 3.
A.
B.
c.
D.
sEcnoN 4.
sEcTtoN 5.
sEcTtoN 6.
lntroduction .. ...... 1
Off-Site Drainage Considerations 1
1. Roaring Fork and Crystal Rivers 1
2. Basins Southwest of County Road 1O9 2
3. lrrigation Ditches 3
On-Site Drainage Considerations 3
Stormwater Ouality Plan . 4
WATER SYSTEM 7
lntroduction... ......7
Water Supply 7
Water Treatment 7
Water Storage I
Distribution System 9
Ownership and Financing 10
SANITARYSEWERSYSTEM ...... 13
lntroduction . . . 13
Wastewater Cottection 13
WastewaterTreatment.. 14
Ownership and Financing 15
ROADS 16
MISCELLANEOUSUTILTTIES ......17
RAW WATER IRRTGATION SYSTEMS 17
til
TABLE 1
TABLE 2
TABLE 3
TABLE 4
TABLE 5
LIST OF TABLES
Paqe
PeakDischarge ...... 1
Major Drainage Element Calculations . . . 5
Major Drainage Elements 6
Coryell StorageRequirements ......9
Fire Flow Analysis 12
LIST OF APPENDICES
Colorado Department of Public Health & Environment letter
dated May 17 , 1994
Colorado Department of Public Health & Environment letter
dated December 4, 1996
toc\98081 c t ii l
sEcTroN 1.DRAINAGE
A. INTRODUCTION
This report addresses the requirements of Section 4:8O, "DRAINAGE PLAN" of the
Garfield County Subdivision Regulations. The project drawings contain a Master Drainage
Plan, Sheets MG1 and MG2 and show detailed drainage information on the roadway plan and
profile Sheets R1 through R13.
This report contains a discussion of both off-site and on-site drainage features and the
methodology used to design various drainage elements to ensure adequate flood protection
in accordance with County Design Standards. An additional section describes the stormwater
quality management measures incorporated into the plan and describes the measures that
must be taken to ensure that the quality of the Crystal and Roaring Fork Rivers and adjacent
wetlands is not compromised.
B. OFF-SITE DRAINAGE CONSIDERATIONS
1. Roarinq Fork and Grvstal Rivers
The confluence of the Roaring Fork and Crystal Rivers is located iust east of
Coryell Ranch. The Roaring Fork River continues flowing along the northerly portion
of the property. Peak flows for the rivers are primarily derived from snowmelt due to
the large basin size and high qlevation of the headwaters. Table 1 is based on
information from the FEMA Flood lnsurance Study for Garfield County, Colorado,
January 3, 1986.
1
SCHMUESER GORDON MEYER, INC.
TABLE 1
LOCATION PEAK DISCHARGE (cfs)
1O-YEAR 5O-YEAR l OO.YEAR 5OO-YEAR
Roaring Fork River above
confluence of Cattle Creek.12,OOO 17,O00 19,200 25,OOO
Crystal River at mouth.5,500 6,800 7,800 12,600
report\98o8 1c.dmk.lc - 3/99
The peak discharge values in Table t have been presented mainly for a frame
of reference. The proposed development will have no impact upon flood elevations as
no structures are proposed within the 1oo-year f loodplain or floodway, the limits of
which have been shown on the Drainage Master Plan sheets. The only work within
the 1Oo-year floodplain will consist of the sanitary sewer force main link to Aspen Glen
and the construction of a small pond on the northern portion of the property. No
permanent fill will be placed as a result of either of these constructions. Work for the
force main construction will fall under a nationwide Army Corps of Engineers Permit.
2. Basins Southwest of Countv Road 109
Steep hillsides southwest of County Road 109 will deliver minor flows to
Coryell Ranch via several different cross culverts proposed for the County Road 109
reconstruction. Historically, most of these flows have been intercepted by the Kaiser-
Sievers Ditch and conveyed northward.
An exception to this minor classification would be that of the larger drainage
where the debris/mud flow event occurred last summer. This watershed has a
potential for generating larger amounts of runoff that must be dealt with. Garfield
County has installed a diversion berm near the apex of the fan which will direct runoff
to the western portion of the fan. A 36" culvert will convey flows across County Road
109 underthe new design. The Coryell Ranch Drainage Plan will interceptthis flow
and route it through the proposed development rather than allowing it to flow into the
Kaiser-Sievers Ditch.
Runoff from the minor drainages will continue to flow into the Kaiser-Sievers
Ditch. Controlled overflows along the ditch will be installed so that any substantial
rises in ditch water surface elevations (due to either a blockage or increased runoff)
will result in increased flows being diverted off into the Coryell Ranch drainage system.
Drainage elements are sized accordingly.
2
SCHMUESER GORDON MEYER, INC.
report\98O81 c.dmk.lc - 3/99
3.lrriqation Ditches
The Coryell Ranch Drainage Plan must accommodate two major irrigation
ditches: the Kaiser-sievers Ditch decreed tor 22.4 cfs and the Southard-Cavanaugh Ditch
decreed tor 12.4 cts. Both ditches originate from the Crystal River and enter near the
southern portion of the Coryell Ranch development.
Minimal modifications are proposed for the Kaiser-Sievers Ditch. A new culvert
will be required to cross the Coryell Ranch road near the intersection of County Road
109. An overf low/turn-out structure is proposed to intercept the debris fan drainage
and a separate overf low/turn-out structure is proposed near the intersection of Midland
Point Road and County Road 109. There are substantial sections of new ditch piping
proposed under the current County Road 109 design.
The Southard-Cavanaugh Ditch will require extensive rerouting and piping within
Midland Point. Historically, the ditch has carried flow rates in excess of the decreed
12.4 cts. An overflow/turn-out structure will be installed at the southern entrance to
the property to limit flows that must be conveyed throughout the proiect. conversely,
Southard-Cavanaugh piping will be upsized to accommodate potential overflows from
the Kaiser-Sievers Ditch and stormwater runoff .
C. ON-SITE DRAINAGE CONSIDERATIONS.
The Coryell Ranch on-site basins will generally produce less runoff than a typical
development due to the low overall density. The Rational Method was used to produce a
conservative set of hydrologic flood peak calculations for sizing particular drainage elements
(i.e., the Rational Method would predict higher flood peaks than alternative methods).
The Rational Method takes the form of O. = cia, where O = flow rate (cfs); c : runoff
coefficient based on soil type and cover; i = rainfall intensity corresponding to the time of
concentration; and a = watershed area (acres).
3
SCHMUESER GORDON MEYER, INC.
report\98081 c.dmk.lc - 3i99
The Coryell Drainage Plan represents an optimization drainage and raw water
conveyance. Most of the drainage elements are dual purpose; they carry both stormwater
runoff and raw water irrigation flows. Drainage elements were sized to safely convey the 25-
year flood peak in addition to a conservative estimate of irrigation flow. The 1OO-year flood
peak amounts were checked to make sure they would not produce flooding that would result
in property damage. Table 2 contains drainage calculations for the major elements on Coryell
Ranch. The drainage element LD. numbers correspond to those shown on the Drainage
Master Plan. Table 3 contains a description of the major drainage elements, including their
size and function. (See Tables 2 and 3 on following pages).
D. STORMWATER AUALITY PLAN
The Coryell Ranch Drainage Plan has been designed to preserve the water quality of
the Crystal and Roaring Fork Rivers and adjacent wetlands. Combining the proposed design
with conscientious construction practices will ensure that this project does not degrade the
downstream receiving waters. As described earlier, there will be minimal wetlands/floodplain
disturbance. Under the proposed design, run-off will be routed through several large ponds
where sedimentation willoccur before continued flow onto the receiving waters. Appropriate
channel linings on steep sections and at culvert outlets will be used to prevent scour. Another
key factor is that, with the low overall density of the project, minimal overlot grading will be
required.
Temporary erosion control measures will be required for construction of the roadways,
utility systems and ponds. A CDPHE Stormwater Permit for Construction activities over five
acres must be obtained. lt will be important to use the ponds as temporary sedimentation
basins while they are under construction. ln general, the contractor will be required to comply
with Sectio n 1O7 .25, "Water Ouality Control" of the Colorado Department of Transportation
Colorado Highway Specifications - 1991 . These specifications, in conjunction with CDOT
Standard Plan M-107-1 provide guidelines for the contractor to incorporate into day-to-day
construction activities. ln addition to the routing and control of stormwater, these
specifications deal with fuel and chemical storage among other factors. Key temporary
erosion control measures include maintenance of vegetative buffers, minimal disturbance,
installation of hay bale check dams downstream of newly-constructed ditches, installation of
silt fence and prompt revegetation.
report\9808'l c.dmk,lc - 3/99
4
SCHMUESER GORDON MEYER, INC.
TABLE 2
CORYELL RANCH
MAJOR DRAINAGE ELEMENT CALCULATIONS
ELEMENT
NUMBER
IRRIGATION
FLOW (CFS)
DRAINAGE
AREA (AC)
RUNOFF
COEFF'C'
TIME OF
CONC. (MIN)
25-YEAR
INTENSlTY (IPH)
25.YEAR
o (cFS)
lOO.YEAR
TNTENSTTY(lPH
1(X}YEAR
o (cFS)COMMENTS
1 2.OO 4.47 o.23 15 2.77 4.85 3.67 s.77
1.1 2.OO 0.00 2.00 2.OA
2 2.OO 0.00 2.00 2.O0
3 34.00 317.39 o.21 95 1.08 105.98 1.26 117.98 INCTUDES AREAAEOVE DEBRIS FAN
4 2.OO 21.24 o.32 2A 2.42 18.42 3.21 23.78
5 34.00 285.96 o.21 90 1.10 100.06 1.38 116.87 NCLUDES AREA ABOVE DEERIS FAN
6 0.00 6.24 o.28 15 2.77 4.84 3.67 6.41
7 2.OA 17.79 0.28 15 2.77 15.80 3.6i 20.28
I 0.00 1.45 0.28 10 3.25 1.32 4.35 1.77
9 4.00 0.00 4.00 4.00
4.00 17.23 o.28 2A 2.42 15.68 3.21 19.49
22.OO
1'.|22.O0 0.00 22.04
4.0011.1 4.00 0.00 4.00
12 4.00 0.00 4.00 4.00
12.1 2.00 0.00 2.OO 2.OO
13 22.O4 235 00 0.19 90 1.10 71.12 1.38 ul,.b,
14 34.00 14.30 o.32 10 3.25 48.87 4.35 53.91
14.1 A nrl 0.00 6.00 6.00
15 000 2.76 o.32 10 3.25 2.87 4.35 3.84
16 0.00 7.33 o.32 10 3.25 7.62 4.35 10.20
17 no0 s.o2 o.32 10 3.25 3.76 4.35 5.04
2.86 0.32 10 3.25 2.97 4.3s 3.98
18 22.00
19 22.OO 0.00
12.00
25.00
12.00
2A 12.O0 25.00
21 25.00 O.UU 25.00
25.00 0.00 25.00
3127199
CORDRAlN.xls
SGM, lnc.
David M. KoE, P.E.
TABLE 3
MAJOR DRAINAGE ELEMENTS
6
SCHMUESER GORDON MEYER, INC.
TELEMSS
NO,:","DESCRIPTION.
1 18" CMP. Conveys irrigation and stormwater flows.
1.1 Diversion structure off Soutlrard-Cavanaugl', Ditch. Diverts up to two cfs for residential use.
2 18" CMP. Conveys up to two cfs of rrrigation water for residential use.
3 Malor outlet swale for Coryell Ranch, Midland Point and area of debris fan. Riprap channel two
feet deep, 8-foot bottom width with 2:1 side slopes. Conveys excess irrigation flows and
flood flows.
4 24" CMP. Conveys excess residential irrigation flows and stormwater.
5 Two 36" CMP's. Conveys excess irrigation flows and flood flows above debris fan.
6 18" CMP. Conveys stormwater.
7 24" CMP. Conveys excess residential irrigation flows and stormwater.
8 18" CMP. Conveys stormwater.
9 18" CMP. Conveys residential irrigation flows.
10 Riprap outlet swale. Conveys residential irrigation flows and stormwater to pond. Riprap
swale 18" deep, 3-foot bottom width, 2:1 side slopes.
11 42" CMP. Conveys Kaiser-Sievers Ditch.
11.1 Diversion structure. Diverts up to 4 cfs for downstream users in the Southard-Cavanaugh
Ditch.
12 24" CMP. Conveys up to 4 cfs for downstream users of Southard-Cavanaugh Ditch.
12.1 Diversion structurc. Diverts up to 2 cfs for residential irrigation use.
13 Diversion/overflow structure. Captures drarnage from above debris fan. Acts as automatic
overflow and turn-out structure for Kaiser-Sievers Ditch.
14 42" Ulta Flo proe. Main rine Sourhard-Cavanaugh Ditch piping. Overflow/turn-out Kaiser-
Sievers Ditch and stormwater conveyance for Midland Point.
14.1 Diversion structure. Diverts up to 6 cfs for residential irrigation use.
15 15" CMP. Conveys stormwater.
16 18" CMP.Conveys stormwater.
17 18" CMP. Conveys stormwater.
18 15" CMP. Conveys stormwater.
19 30" CMP. Conveys Karser-Sievers Ditch turn-out/overflow water.
20 36" Ultra Flo. Main line Southard-Cavanaugh Ditch.
21 36" CMP. Conveys Southard-Cavanaugh Ditch turn-out/overflow water'
22 Southard-Cavanaugh Ditch diversion/overflow structure.
report\g808 1c.dmk.lc - 3/99
sEcTtoN 2.WATER SYSTEM
A. INTRODUCTION
This report is meant to fulfill the requirements of Section 4:91, "WATER SUPPLY
PLAN" of the Garfield County Subdivision Regulations. Detailed information about the legal
and physical supply of water is contained elsewhere in this submission in a report entitled
"CoryellRanch and Midland Point PIJD WaterSupply Plan", prepared by Resource Engineering.
This section provides a cursory discussion of design criteria for the water distribution,
storage and supply systems. The water system master plan is shown on drawings MWSl and
MWS2. Detailed plan Sheets, MP1 thru MP15, are included within the Preliminary Plan
drawings.
B. WATER SUPPLY
Coryell Ranch Well No. 13, permitted by the Colorado Division of Water Resources on
March 9, 1999, under Permit No. 051447-F, is located near the cul-de-sac on the end of
Coryell Ranch Road and will provide sufficient water to serve the entire development.
Maximum day demands on the potable water system are estimated at 53 gpm. Well No. 13
has been pump tested and is capable of supplying flows well in excess of the maximum day
demand. The pump test data suggests that, with a properly constructed large well in this
location, yields of lOOO gpm or more may be realized. The previously-mentioned water
supply report by Resource Engineering provides complete and detailed information on the
water supply.
C. WATER TREATMENT
The Coryell Well No. 13 water has been shown to be a true groundwater source
requiring only disinfection by the Colorado Department of Public Health & Environment. The
well pump will deliver water to a chlorination station located in the common area opposite the
intersection of Spirit Mountain Road and Coryell Ranch Road. After chlorination, the well
report\9808 1 c.dmk.lc - 3/99
7
SCHMUESER GORDON MEYER, INC.
water will continue to travel via a 6" ductile iron pipe to a water storage tank located
southwest of County Road 1O9. The volume of the 6" line and water storage tank will
provide a chlorine contact time well in excess of the required minimum 3O-minute detention
time. The well pump will be operated off a control panel located within the chlorination
building. Water level transmitters located in the water storage tank will signal via telemetry
for the pump and chlorine injectors to turn on and off at appropriate levels. Alarm conditions
will include high and low levels for the storage tank, chlorine gas detection, power failure,
motor protection and loss of the telemetry system. All these alarm conditions will be sent to
a phone dialer which will automatically call out to on-call operators to attend to any alarm
conditions.
D.WATER STORAGE
The Coryell Ranch water system will be served by a 200,000 gallon above-ground steel
water storage tank. The hydraulic analysis of the proposed water system determined that this
one storage tank was sufficient to provide satisfactory pressures and fire flows to all
locations. The location of the storage tank is shown on the Master Sewer & Water Plan
Sheet MWS2 of the Preliminary Plan drawings.
The storage capacity for a water system can be evaluated in terms of equalization, fire
and emergency needs. Equalization storage accounts for peak usage periods when
consumption exceeds production capabilities and occupies the upper portion of the tanks. Fire
storage is allocated immediately below equalization, with the emergency storage reserve f illing
the bottom levels of the tank. Emergency storage is the most subjective of the components.
It should be based upon the owner's assessment of the reliability of the water system and the
possible ramifications of running out of water during an emergency event.
Table 4 contains a calculation for each of the water storage components and shows
how the 2OO,OOO gallon tank size was determined. (See Table 4 next page).
I
GORDON MEYER,INC.
report\98081 c.dmk.lc - 3/99
TABLE 4
CORYELL STORAGE REOUIREMENTS
Equalization
Use of 25o/o of Maximum DaY Demand
o'25 x 53 gpm x 1440 min/dav = 19'080 gallons
Fire
Use 1OO0 gpm fire flow for a 2-hr. duration
l OOO gpm x 2 hrs x 60 min/hr = 120,000 gallons
Emergencv
Use 2 x Average Day Demand
2 x 21 gpm x 144o min/dav = 60'480 gallons
E. DISTRIBUTION SYSTEM
The Coryell Ranch water distribution system consists of a 1O" diameter transmission
main from the tank and a network of 8" distribution lines. water lines have been looped
where practical. The governing design situation for the water system will be that of fire flow
demands superimposed over maximum day demands. The system has been designed to
provide a minimum fire flow of l OOO gpm at a residual pressure of 20 psi throughout all
points in the system. The water system was modeled using the CYBERNET computer
program. The results of the fire flow analyses are shown in Table 5 on the next page'
Normal system pressures will range from a minimum of 35 psito a maximum of about 75 psi'
The pressure variations are more dependent on the current tank water surface level and the
elevation of the lot, rather than normal system demands without fire flows'
With higher elevations prevalent throughout Midland Point and the possibility for long
services within coryell Ranch, a standard water service size of 1" will be utilized throughout
the entire project. This will reduce the pressure losses that would normally occur in a typical
3/4" service installation under higher in house demands. The water service lines will be
tapped from the distribution mains to a point behind the back of curb' A curb valve will be
located at this point and will delineate the responsibility between the private property owner
and the District.
report\98081 c.dmk.lc - 3/99
9
SCHMUESER GORDON MEYER, INC.
F. OWNERSHIP AND FINANCING
The water system for the Coryell Ranch PUD has been designed as a complete and
independent system, fully capable of providing adequate domestic water to all of the Coryell
Ranch PUD independently of any other domestic water system. Additionally, the elements
of the Coryell Ranch water system have been designed to the standards and specifications
of the Roaring Fork Water & Sanitation District (formerly the Aspen Glen Water & Sanitation
District), which provides domestic water service to the neighboring Aspen Glen PUD. The
Applicant will also provide an easement which will allow physical connection of the Coryell
Ranch water system to the existing Roaring Fork Water & Sanitation District's system.
The Coryell Ranch water system will be constructed by the Applicant, at its expense.
It is the intention of the Applicant to, at least initially, dedicate and convey all facilities of the
Coryell Ranch water system, without charge, to the homeowners association of Coryell Ranch
and the homeowners association of Midland Point as tenants in common. The water system
will thereafter be maintained and operated by both associations.
ln the course of preparing the within Application, the Applicant has approached the
Roaring Fork Water & Sanitation District and inquired whether the District would be interested
in being the provider of domestic water to the Coryell Ranch PUD. The District has
determined that it could be beneficial for it to act as the regional supplier of water, as well as
sewer. Potential advantages include redundancy of inf rastructure, including supply,
treatment, transmission mains, and storage facilities, which would benefit Coryell Ranch and
other developments which might receive water from the District's facilities. The District
administration is already established and prepared to provide billing, administration, and
operational services to customers receiving both water and sewer service.
The existing service plan for the Roaring Fork Water & Sanitation District provides that
the District shall not provide domestic water service outside the boundaries of the Aspen Glen
PUD without first obtaining an amendment to its Service Plan. The District is in the process
of preparing and submitting for approval a Service Plan Amendment that would increase its
service area for the purpose of providing water service. At such time as this Service Plan
Amendment is approved, the homeowners associations for Coryell Ranch and Midland Point
report\98081 c.dmk.lc - 3/99
10
SCHMUESER GORDON MEYER, INC.
would be free to transfer all of the Coryell Ranch water system facilities to the District, and
the District would thereafter own, operate, and maintain such water system.
ln the event that approval of the District's Service Plan Amendment is obtained prior
to completion of the Coryell Ranch water system, then the Applicant would, at the outset,
dedicate and convey all of the water system facilities directly to the District.
11
SCHMUESER GORDON MEYER, INC.
report\9808 1 c.dmk.lc - 3/99
SCCNATio: TABLE 5 - FIRE FLOW ANALYSIS
Flrr Flow AnalYsis
Junction RcPort
Nooc I Etevrton I o"rn.*f ncu-J- n
Flowi(pgllPrran(spm) I I Fr)
J-1
J-2
J€
J{
J€
J€
J-7
J€
JO
J.to
J-t I
J-12
J-l3
J-14
J-i5
J-l6
J-17
J-t8
J-i9
112.@
11Zm
J-l8
J-t 1
J-|4
J-l6
J-l6
J-1.0
J-t6
215.94
215.94
215.9a
215.9t
215.96
215.96
213.96
215€6
215.96
1,215.E71 20.@
1,5ft.211 zo.o
zcro.5sl 2o.o
r,E r.8sl 2O.E
2211.121 2O.@
z3B.44l 20.@
2,3srsol 2os
z7g/..$ | 2O.O
60.5r
57.49
60.5t
56.t9
59.C5
62JE
47.9
.14.6
44.8
8A
Zon}l
Zonc-1
Zonc.1
&nc-t
Zonc-l
Zotrt.t
Zom-r
Zonc-t
&m-r
Zonc-l
Zona-r
ZorE l
lZona-r
Zolrc-l
Zons-t
Zonc-t
Zona-r
Zom-l
Zorp-t
10
1t
Trtlc: CORYELL RANCH
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O!1n/99 O3:30:OS pM O H..Gd M.thodr. lnc.
SCTilIESERGO@NTETER,
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SECTION 3. SANITARY SEWER SYSTEM
A.INTRODUCTION
This report addresses the requirements of Section 4:92 "SANITARY SEWAGE DISPOSAL
PLAN" of the Garfield County Subdivision Regulations. The project drawings contain a master
sewer plan on Sheets MWSl and MWS-2 and show detailed sewer plans and profiles on
Sheet MP1 thru MP15. This section provides a cursory discussion of the proposed method
of wastewater collection and treatment.
B. WASTEWATER COLLECTION
Wastewater will be collected by a network of 8" PVC sanitary sewerlines as shown
on sewer master plan Sheets MWSl and MWS2, and the plan & profile Sheets MP1 thru
MP15. Where possible, mains have been located within the streets. Easements have been
created where sewerlines will flow along the sides or rear of lots. The collection lines will
deliver flow to a lift station located in the northern portion of the project as shown on MP1 .
Alt of these facilities have been designed to the standards and specifications of the Roaring
Fork Water and Sanitation District (formerly the Aspen Glen Water and Sanitation District.
From there, the wastewater will be pumped via force main across the Roaring Fork River to
Aspen Glen. The existing Roaring Fork Water & Sanitation District sewerlines and interceptor
will convey f lows along to the Roaring Fork Water & Sanitation District wastewater treatment
facility. The sewerlines in Aspen Glen were sized to accommodate the additional flow from
the Coryell Ranch.
!nterceptor sewers and collection systems have been designed to flow at a maximum
depth of one-half full for the design flows. Manhole spacing has been limited to 400 feet.
Sanitary service laterals will consist of 4" PVC lines which will enter into the mains at wye
connections.
13
SCHMUESER GOROON MEYER, INC.
report\98081 c,dmk.lc - 3/99
C. WASTEWATER TREATMENT
Wastewater service to the Coryell Ranch was contemplated and planned for in the
District's Service Plan). Garfield County approved the Service Plan in Resolution 94-008.
Coryell Ranch is located in the primary service area as defined in the Service Plan. Coryell
Ranch was the subject of an out-of-district Sewer Service Agreement between Unocal, the
former owner of the ranch, and the District. Such agreement, which was also approved as
part of the Service Plan, sets out the terms of wastewater service to Coryell Ranch.
The ultimate capacity of the RFWSD WWTF was based upon EOR and population
projections included in the approved Service Plan. The proposed density included in the
Service Plan for the Coryell Ranch (Unocal South in Service Plan) was for 75 EOR's which is
more than the 72 EOR's included in this application. Therefore, wastewater service to the
Coryell Ranch is consistent with the approved Service Plan. The interceptor sewers, lift
stations and wastewater treatment facility have all been designed for the density from the
Coryell Ranch.
The existing RFWSD WWTF has a capacity of 107,OOO gpd, however, because the
facility was designed to be built in phases, many of the facilities have been designed for
321 ,OOO gpd. The current flows to the facility include service to approximately 50 units and
flows are so low they are difficult to measure. However, the expected flow from these units,
based upon industry standards, would approach 1 2,000 gpd. The District facility was planned
to be build in phases. Phase 2 will require an additional aeration basin, clarifier and digester.
These phases were identified in the Service Plan and the Site Application approved by the
Colorado Department of Public Health and Environment. The current Site Application for the
District is for the Phase I expansion for 107,OOO gpd. The District's Discharge Permit requires
a planning process to proceed with plant expansion when capacity reaches 80% and
construction must commence when capacity reaches 95o/o. A Site Application willbe required
when the plant flows trigger an expansion.
The wastewater treatment f acility consists of the f ollowing unit processes.
Pretreatment f acilities consist of bar screening, an aerated grit chamber and f low
measurements. Flow measurements via Parshall flume and continuous recording chart. Grit
report\98081 c.dmk.lc - 3/99
14
MUESEB GORDON MEYER, INC.
from the aerated grit chamber is processed with a grit pump to a grit classifier. The grit from
the classifier is stored and disposed of at an approved landfill.
Secondary treatment is provided by an extended aeration activated sludge process
followed by secondary clarification. Sludge from the clarifier is pumped to the head of the
extended aeration basin as return sludge or pumped directly to the aerobic digester. Clarified
wastewater flows to a flow equalization basin before it is pumped to a mixed media filter.
Tertiary treatment is provided through a mixed media filter. After the filter, water is
disinfected with chlorine and flows through a chlorine contact tank. Water from the chlorine
contact tank then flows through a natural wetlands area where additional treatment is
provided before discharge to the Roaring Fork River. The gravity filter effluent is then
discharged to the Roaring Fork River through an outfall pipe. Backwash water comes from
the chlorine contact tank. The waste backwash water is directed to a holding tank and
pumped to the head of the extended aeration basin.
Sludge is digested through an aerobic digester. The aeration for the extended aeration
basin, aerobic grit chamber and aerobic digester is supplied by a series of blowers and
distributed to the basins through fine bubble diffusers. Digested sludge is pumped to sludge
trucks and hauled to either a landfill or an approved disposal site, in accordance with the
CDPHE latest 301 Regulations.
The WWTF is now operating under Discharge Permit #CO-OO4475O and Site
Application #4133. Approval letters from the Colorado Department of Public Health and
Environment are attached to the back of this report.
D. OWNERSHIP AND FINANCING
All elements of the Coryell Ranch PUD sanitary sewer system, including the connection
to the District's existing facilities, will be constructed by the Applicant at its expense. Upon
completion of construction, all of such f acilities will be dedicated and conveyed to the District.
By Amendment to Construction and Reimbursement Agreement dated August 17,
report\98O81 c.dmk.lc - 3/99
15
SCHMUESER GORDON MEYER, INC.
1998, between the Roaring Fork Water & Sanitation District, Aspen Glen Golf Company, and
the Board of County Commissioners of Garfield County, a mechanism has been put in place
by which Aspen Glen will pay for an expansion of the District's existing wastewater treatment
plant by the addition of capacity in the amount of 1O7,OOO gallons per day. This plant
expansion, together with the treatment plant's existing facility, also paid for by Aspen Glen,
provides plant capacity in excess of the needs of the Aspen Glen PUD at build out. Excess
capacity allocated to Aspen Glen is estimated to be at least 80 EOR's. The developer of
Coryell Ranch PUD has reached an agreement with Aspen Glen to purchase 72 EOR's of plant
capacity from Aspen Glen in a manner consistent with the Out-of-District Sewer Service
Agreement. Thus, the Applicant will pay for the necessary treatment plant capacity to
provide service to the Coryell Ranch PUD.
Furthermore, the Applicant and the District have reached agreement on a Pre-lnclusion
Agreement which sets out the terms and conditions upon which all of Coryell Ranch will be
annexed to and become a part of the District.
SECTION 4. ROADS
The roadways within Coryell Ranch and Midland Point will take on differing
characteristics. Those serving the large lots of the Coryell Ranch side will take on a rural feel
and will have gravel shoulders and open roadside ditches. The roads within the more dense
Midland Point area will be typical of a residential neighborhood and have curb and gutter on
both sides. The curb and gutter will be a mountable curb, eliminating the need for curb cuts.
Road plan and profile views are shown on Preliminary Plan drawing Sheets R1 thru
R13. Typical cross sections are shown on Roadway Detail Sheet RD1. The typical road
section includes 3" of asphalt over 6" of Class 6 aggregate base course. In areas where roads
cross moderate risk subsidence areas, an additional sub-excavation of three feet will be
required. This sub-excavation will be filled with compacted granular structural fill obtained
from on-site sources.
16
SCHMUESER GORDON MEYER, INC.
report\9808 1 c.dmk.lc - 3/99
The Coryell Ranch and Midland Point roadways have been designed in accordance with
the Garfield county street and Roadway Design standards contained in section 9:35 of the
Subdivision Regulations. Typical turn radii are 25 feet at intersections and cul-de-sacs'
SECTION 5. MISCELLANEOUS UTILITIES
The preliminary plan drawings contain a schematic layout showing possible locations
for electric, gos, telephone and television cable lines. The respective utility companies will
produce detailed final designs subsequent to the filing of the Final Plat. lntent to serve letters
are contained elsewhere in this submission. lt is expected that gas and cable will make the
Roaring Fork River crossing with the sanitary sewer force main and that electric and telephone
service will originate from the area of the bus turn-around at the western edge of Coryell
Ranch.
SECTION 6. RAW WATER IRRIGATION SYSTEM
Coryell Ranch and Midland Point will make extensive use of raw water irrigation' The
potable water system will not be used for pressurized irrigation. Water rights are derived from
both the Kaiser-sievers Ditch and southard-cavanaugh Ditch'
The Midland point area will be irrigated by a pressurized raw water system served by
a pumphouse located on the small pond near the intersection of Midland Point Road and
county Road 109. The raw water irrigation pump will be rated for a maximum design flow
of approxim ately 22O gpm at a total dynamic head of 160 feet' These design values were
arrived at by assuming a maximum day demand based on 5oo/o of the homes using up to 1O
gpm at any one time. A variable f requency drive will be installed so that the pump can closely
match the actual demands at any one time on the system. The raw water will be distributed
by a 6,, pVC main flowing to a network of 4" PVC lines. The 4" line will form a loop so that
bi-directional flow is possible. Gate valves will be dispersed throughout the system so that
sections of the main can be shut down if needed without placing more than, say 1O homes
without irrigation water. lndividual houses will take waterthrough 13" PVC stubs within an
electronically-operated valve which will allow each system to be isolated and worked on if
report\98O81 c.dmk.lc - 3/99
17
SCHMUESER GORDON MEYER, INC.
necessary. The Midland Point raw water system is shown on water & sewer master Plan
Sheet MWS2.
The Coryell Ranch portion of the project will take a more historic approach to raw
water irrigation. A network of open irrigation laterals will convey a prescribed amount of raw
water irrigation to each lot. lndividual homeowners will be required to install an irrigation
intake, pump and pressurized system for all irrigated areas. As in Midland Point, no potable
water is to be used for irrigation purposes.
The Drainage Master Plan shows the pond and irrigation lateral network. Many of the
irrigation laterals will also serve a dual purpose and convey stormwater runoff as well. a
18
SCHMUESER GORDON MEYER, INC.
report\98081 c.dmk.lc - 3/99
ST{TEOFCOLOIGDO
Roy Romer, Governor
Pari Shwtyder, Fxecuive Director
&{&.ted to proto,tiag and imprwiag the hearth and envianment of t)e pprc o( Cororado
l30o Chery Creek Or. S. Leboraorv Buildinr
ffi"tii',lidor802 2 2'1 5 3 o
sr.:,L? tr.t**kr r r -r r, .
(3031 691 -{700 GlondoDcmnnrcnt
of hrbficflczlth
rndEmironrmn
December 4, 1996
cary Latti
Aspen GIen t{ater and Sanitation District9929 Highway 82Carbondale, CO 81r,23
CERTIFfED thfL NO: p 335 551 g34
RE: Final Permit, colorado t{astewater Discharge pernit sys-temNumber: co-o044750; Aspen GIen, Garfield c"""iy--
Dear Mr. Latti:
Enclosed please find a copy of the per:ait reuerar which was issuedunder. the cororado watei- euarity contror Act. your dischargepermit requires that specific "c€ion= be performed at designatedti'mes' You -are legaliy obligated to conpry with at1 terms andconditio.= o!_yo,r. pL=rit. rt is especiarilid;;tant to note therrEFPEcrrvE DAIE or -pgRHir.,, not the ,DATE srcNED,, rocated in thel"':T rj-ght hand corner of page L, of your pernit. rt is irregalto discharge per the condition= oi thi; p"rrit untir that date.
P1ease read^the permit and if you have any questions contact thisoffi_ce at Gs}-3sbo.
Singerely,.Cryd%4
KoDeIrc, J. Shukle, ChiefPermits and Enforcement SectionWater euality control Division
xc: Permits_Section, Environmental protection AgencyRegional Council of GovernnentLocal County Health DepartmentDistrict engineer, rieia i"pp"rt Section, wecD
Enclosure
RIS: mlb
STATE OF CCLOI\ADC
COTORADO DEPARTMENT OT HEATTH
Oedicared b ptotrtng and imprcvnt rhe hea/rh ano
envtronment o( the pple of Colorao
a300 Chcrry Creek Dr. S. Lebor:torv Euilding
Dcnvcr, Coloodo 80222-lS3O ,l2lO E. llth Avcnuc
Phonc 1303) 6s2.2000 Bilil;fli#o 60220.1716
May tz, tSe+
Ms. Terri Hart, Actlng District President
Aspen Glen Water & Sanitation Oistria/Aspen Glsn Golf Partners
fof filEGorr
P&khAt{drrMO.MPHtrr-re 0lrcr
555 East Durant Street. Suite aR
Aspen, CO 8r6t
Re: Sile Application #4133
Pitkin Counry
Dear Ms. Hart:
The Water Ouality Controt Division has reviewed and evaluated your site application and supporting
documentation lor a domestic wastewater treatment works to be located primarily in the NE l/4 of tbe
NE l/4 of Section 13, T7S, R89W and 3 lift sutions as follows:
Lift Station #t -Section 18, T7S, B88W
Lift Station #2 - NW 1/4 SW 1/4 Section 20, T7S. R88W
Lift Statron #3 - NE l/4 NW 1/4 Seclion 29, T7S, R88W
to serve rhe Aspen Glen Warer & Sanitation Oistrict and its service area and to discharge to the Roaring
Fork River.
Prior ro rhe operation ot the facility, a discharge permit will be required which will specrfy the final
condrtions and timitarlons of the operations oitne tacitity. Enctosed is an application for the permit.
Please allcw 180 days tor processing of the application and issuance of the permtt.
We lind your appticarion ro be in conformance with the Water Oualiry Control Commission s 'Regulations
for Site Applications ior Domesric Wastewater freatment Works'. Therefore, the site appiication is
approved wrth lhe lollowing conditions listed below.
Baseo upon application information. the system design will be for:
Average Daily Flow Capacrtv - 0 107 mgd
Organrc Loading Capacuy - 225 lbs. BOD,lday
Capacny tjtt Station #1 - 387 gpm peak flow
Capacrry Lift Station #2 - 273 gpm peak flow
Capacrry Lift Station #3 - 25 gpm peak flow
Treatment processes to be uaed - Extenoed aeration, polymer chemical leed. filtration.
and chlorination
Preliminary Effi uent Parameler Values:
BOD: -30/45 mg/1
Suspended Solids - 30/a5 mg/l
Chlorine Residual - 0.5 mgTl
Fecal Colilorm - 6,000/12.000 organisms;t00 ml
Design for vatues in excess of those conrained in conditions I and 2 above or failure to comply wilh any
other conottions conrarned herein wrll renoer thts approval void and another site application wrll have to
be orccessed.
l.
2.
Page Two
May 17, 1994
Ms. TerriHart
This sire approval will expire one year trom thE date of this lener if the construction of
the proiect'nas not commenced by tllat dde. It explration ocfuns, you must apfly lor a
nerr sne approval. Construalon ti Oefined as emenng iilo a contract tor the erecllon or
pfrysical placement of rnaterials, equiPmEnt' piping, earthflork' or bu[ding which are to
be a part of a domestlc wastewatsr treatment works.
The design (construction plans and specifications) for the treatment works must be
approreJ by the DMslon prior to commencement of construcdon and all conSrualon
cnange orOirs inithgng variances from the approred plans and speciffcations must be
approved by the Division.
The applicant,s registered engineer must fumish a sEtement prior to the
commencement oi operation-stating that the lacilities were constructed in conlormance
with approved plans, specifications, and change orders'
The Aspen Glen facility sfiall serve Es the regional wa$swater treatment facility for that
ponion ot the Roaring Fork River valley between the wastarater service areas ol the
Cities ot Carbondale inO Otenwooa Springs. SeMce stull be prw6ed to properties -
withln the DistriA's expanded seMce area ln accordance with Dlstrict rules and
regulations and/or terms of the Out€t-Olstrict Sewer SeMce Agreement.
tn accordance with Colorado Warer Ouality Control Commission regulations, this apPro/al is subiect to
appeal as stated under Secrio n 2.2-S g4 oi 'Regutations for Site Applications for Domestic Wastewater
Treatment Works'.
This approval does nor relieve the owner lrom compliance with all counry regulations prior to
constructron nor from responsibility lor proper engineering, construction, and op€ration of the facility'
Sincerely,
4.
5.
.JTDavrd Hotm
Director
Water Ouality Control Division
JDH :TLB : cm/ Siteapp.5€5.67
Delaney & Balcomb. P C. - Ann: l-awrence R. Greene
Schmueser Gordon Meyer - Ann: Louis Meyer
Garfield County Board of Counry Commissioners
Garlield Counry Plannrng Oepanment - Attn: Mark Bean
Leavenwonh & Lochhead. P.C. - Ann: James L Lochhead
Austin. Peirce & Smith. P.C. . Ann: Thomas F. Smith
Otlice of the Anorney General - Attn: tGren Kishbaugh
Thomas Bennen. Sr. Planner. WOCD
Richard Bowman, Field Suppon. WQCD - Grard Junction
Dwain Watson. Oistrict Technician. WOCD - Grand Junctton
David Akers. Permrts & Enlorcement. WOCD
ar il
.
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PRELIMINARY GEOTECHNICAL INVESTIGATION
CORYELL R,ANCH
GARFIELD COUNTY, COLORADO
PrePared For:
MELROSE CORPORATION
P. O. Box 21307
Hilton Head lsland, SC 29925
Attention: Mr. Jack Best
Job No. GS-2647
Part ll
January 29, 1999
CTL/THOMPSON, INC.
CONSULTING ENGINEERS
234 CENTER DRIVE r GLENWOOD SPRINGS, COLORADO 81601 r (970) 945-2809
TABLE OF CONTENT
SCOPE
SUMMARY OF CONCLUSIONS
SITE DESCR!PTION
PROPOSED DEVELOPMENT
SUBSURFACE CONDITIONS
Clays
Gravels and Sands
Ground Water
SITE DEVELOPMENT
. Overlot Grading and Road Grading
Utility Construction
PRELTMINARY BUILDING CONSI DERATIONS
Pretiminary Building Considerations
lnterior Floors and Exterior Slabs-On-Grade
Below Grade Walls
EARTH RETAINING STRUCTURES
lnterior Subdivision Roads
SURFACE DRAINAGE
LIMITATIONS
1
1
2
4
4
5
5
5
6
6
8
I
8
9
10
11
'12
'14
14
FIGURE 1 . APPROXIMATE LOCATTONS OF EXPLORATORY BORINGS AND PITS
FIGURES 2 AND 3 . SUMMARY LOGS OF EXPLORATORY BORINGS AND PITS
FTGURE 4 . SWELL CONSOLTDATION TEST RESULTS
FIGURES 5 THROUGH 8. GRADATION TEST RESULTS
TABLE 1 . SUMMARY OF LABORATORY TESTING
MELROSE CORPORATION
CORYELL RANCH
CTUT GS.2647, PART II
SCOPE
This report presents the results of our Preliminary Geotechnical lnvestigation
for the Goryell Ranch in Garfield County, Colorado. The site is planned for a
residential development. The subsurface exploration and engineering analysis were
performed to provide an overview of geotechnical considerations to assist in
planning the development of the subdivision and developing preliminary foundation
recommendations. After building footprints are finalized and building plans are
known, additiona! design level geotechnical study wilt likely be required for each
site. The report identifies issues believed to be common throughout the site and to
most of the lots and provides preliminary geotechnical discussion and
recommendations regarding overlot grading, infrastructure installation, building site
excavations and fills, foundation construction, lateral earth pressures and floor
stabs. Our report includes a description of the subsoil conditions found in our
exptoratory borings and exploratory test pits and a discussion of site development
as inftuenced by geotechnicalconsiderations. This investigation was performed in
accordance with our Proposal GS-98-242, dated December 10, 1998.
This report is based on conditions disclosed by our exploratory drilling and
excavation, site observations, results of laboratory tests, engineering analysis of
field and laboratory data and our experience. The criteria presented in this report are
intended for planning purposes. A summary of our conclusions is presented below.
SUMMARY OF CONCLUSIONS
1. We discovered no geological or geotechnica! constraint that would
preclude the planned site devetopment. The subsoil conditions are in
generat favorable for the proposed residential development. Areas of
potential geologic hazard to be avoided or mitigated are discussed in
our geologic hazard investigation (our Job No. GS-2647, dated
January 29,1999).
Z. Our borings and test pits penetrated a surficial mantle of organic sand
and c,lay undertain by dense to very dense, moist, silty to clayey
gravels with cobble and boulder with thin to moderately thick lenses
MELROSE CORPORATION
CORYELL RANCH
CTUT GS.2647, PART II
r
of medium dense to dense, silty to clayey sands with gravels and
occasional cobbtes. A 3.5 feet thick and 1 foot thick layer of silty to
sandy clays were found in our TH-3 and TP4, respectively, below the
organic soils, above native gravels.
The natural clays were judged to be moderately compressible. The
natural gravels and sands were judged to possess a low consolidation
potential.
We anticipate spread footings placed on native gravels will be the
recommend foundation type for the majority of lots. Extending of
footing excavations to gravels and sands or removal of clays and
replacement with structural fill built with on site gravels or sands may
be recommended where clays are found at footing elevations. Detailed
soils and foundation investigations should be performed on a lot by lot
basis to determine the appropriate foundation type and to develop
design criteria.
Preliminary data indicates concrete slabs-on-grade floors placed on
the gravels or sands will perform satisfactory if the soils below slabs
are not wetted. Where clays occur at floor subgrade elevation it may
be recommended to remove and replace the upper 1 to 2 feet of the
clay with granular structural fill.
The gravels and sands will provide good subgrade support for
pavements and were found at planned subgrade elevations should
result in economical, minimum thickness pavement sections. Thicker
pavements or removal of 12 to 18 inches of clay and replacement with
gravels and sand as a subbase Iayer may be recommended in areas
where clays are found at planned subgrade elevations
Contro! of surface drainage is important to the performance of
foundations and interior and exterior slabs-on-grade. Surface
drainage should be designed to provide rapid remova! of surface
runoff away from buildings and road3.
SITE DESCRIPTION
The site consists of the Coryell and Tomcat Ranches. Coryell Ranch is an
approximately 27Tacre parcel located in the Roaring Fork River Valley approximately
one mile northwest of the Town of Carbondale. The confluence of the Roaring Fork
and Crystal rivers is at the east central part of the property. Tomcat Ranch is an
approximately 8 acre parcel of land located between Coryell Ranch and the
MELROSE CORPORATION
CoRYELL RANCH ^CTUT GS.2647, PART II Z
3.
4.
5.
b.
7.
confluence of the Crystal and Roaring Fork rivers to the east. The Crystal River is
along the southeast property boundary. The Roaring Fork River is congruent with the
north property boundary. An abandoned railroad grade is aligned through the site
from the northwest to southeast. Some single family residential homes are on land
adjacent to the northwest and east. Gounty Road 109 is aligned through the south
part of the property. lrrigated pasture land is on property above the site to the south.
Topographically the site can be visualized as several broad, gently undulating
terrace surfaces that step down to the Roaring Fork River at the north part of the
property and the Crystal River at the southeast part of the property. An upper
terrace is on adjacent property above the site to the south. From the upper terrace
ground surfaces drop approximately 150 to 200 vertical feet down steep slopes with
gradients of approximately 40 to 50 percent. The terraces that make up the site are
separated by comparatively small vertical distances generally on the order of 20 to
30 vertical feet. Terrace surfaces slope to the north and east at gentle grades of 2 to
4 percent. Ground surfaces step down from upper terrace surfaces to the lower
levels which are adiacent to the Roaring Fork and Crystal rivers. At the north part
of the site along the Roaring Fork River the terrace steps down to the lower level at
approximately 10 to 20 percent. Atthe central part of the site the terrace surface
drops abruptly approximately 20 to 40 vertical feet down steep grades of
approximately 30 to 50 percent to the Roaring Fork River. At the southeast part of the
site the step down to the lower level adjacent to the Crystal River is approximately
40 to 50 vertical feet at a grade of approximately 50 percent. Several ponds are on the
lower terrace at the north part of the property.
The property has been used for irrigated pasture and haying operations.
Vegetation consists of irrigated grasses and weeds. Oak brush, sage and weeds are
prevatent in non-irrigated areas and mature trees are common along the banks of
the Roaring Fork and Crystal rivers.
MELROSE CORPORATION
CORYELL RANCH
CTL/T GS.2647, PART II
r
PROPOSED DEVELOPMENT
The proposed development will consist of two areas; the "River Club" and
"Coryell Ranch". The River Club will be "higher end" single family residences at the
north and west parts of the propefi. Coryell Ranch will be "obtainable housing"
located in the southeast part of the propefi. Total number of residential units wil!
be approximately 70. Water features, parks and open space areas will be
incorporated into the development.
Roadways and utilities will be constructed. Water and wastewater systems
will be centralized and may be provided by connecting to existing systems on
adjacent developments or may be provided on site.
SUBSURFACE CONDITIONS
Subsurface conditions were investigated by drilling eleven (11) exploratory
borings and excavating eight (8) exploratory test pits at the approximate location
shown on Figure 1. Our borings were drilled using a truck mounted drill rig and 4-
inch diameter, continuous flight auger. Exploratory test pits were excavated with a
large trackhoe. Subsurface exploration operations were directed by our
representative who logged the soils and obtained samples for laboratory testing.
Graphic logs of the soils found in our borings and test pits and results of field
penetration resistance tests are presented on Figures 2 through 5. Penetration
resistance tests were performed in borings by driving a modified California sampler
or standard barrel sampler with a 140 pound weight fatling 30 inches. Local
experience indicates penetration resistance tests using a California sampler are
simitar in magnitude to the results of a standard penetration test. The modified
California sampler results in a 2-inch diameter by 4 inch long sample suitable for
many laboratory tests. Samples obtained from our borings and test pits were
returned to our laboratory where they were visually classified and typical samples
MELROSE CORPORATION
CORYELL RANCH
CTUT GS.2647, PART II
selected for testing. Laboratory test are presented on Figures 4 through 8 and
summarized on Table 1.
Our borings and test pits penetrated a surficial mantle of organic sand and
clay underlain by dense to very dense, moist, silty to clayey gravels with cobble and
boulder and thin to moderately thick lenses of medium dense to dense, silty to
clayey sands with gravels and occasional cobbles. A 3.5 feet and a 1.0 foot thick
layer of sitty to sandy clays were found in our TH-3 and TP4, respectively below the
organic soi!, above native gravels. The following paragraphs describe the soils in
more detail.
Clays
Comparatively thin lenses of medium stiff to stiff, moist, sandy to silty clays
were found at our TH-3 and TP4 locations. Geologic reports generally refer to these
soils as colluvium. The soils are the result of weathering and downslope movement
of deposits of the parent sedimentary rock. A clay sample subjected to one
dimensional swell/consolidation testing to judge volume change potential possessed
a low consolidation potentia!. Natural moisture content was 18.9 percent and dry
density was 107 pcf. The clays may be capable of supporting light foundation loads
and may result in relatively high lateral loads on foundation walls.
Gravels and Sands
Gravel soils were found at all borings and pit locations. The gravels were
predominantly silty to clayey with cobbles and boulder with occasional thin to
moderately thick silty to clayey sand lenses with gravel and occasional cobble. The
gravels were dense to very dense and moist. Drilling in dense gravel alluvium with
auger equipment was difficult due to cobbles and boulders and drilling refusa! was
encountered in most borings. We performed a large scale gradation on a combined
sample from severat borings and test pits. The dried sample weight was 3288
MELROSE CORPORATION
CoRYELL RANCH E
CTUT GS.2547, PART II V
pounds. The sample contained approximately 72 percent boulder, cobble and gravel
(larger than No. 10 sieve), 23 percent sand (No. 200 sieve to No. 10 sieve) and 5
percent silt and clay sized particles (passing No. 200 sieve). The gravels are capable
of supporting moderate to high foundation loads. Lateral loads on walls will be
lower where the gravel soils are used as backfill then where clay backfill is used.
Ground Water
Ground water was not found in our exploratory borings or test pits the day of
drilling or excavation. The exploration was in the winter prior to heavy spring runoff
period. The ground water level may rise during, and for a period after, spring snow
mett. A perched water table could devetop. We instalted PVC pipe at several
locations throughout the site to allow future measurements to ground water.
SITE DEVELOPMENT
The following section presents recommendations and discusses road building
and utility installation.
Overlot Grading and Road Grading
Grading ptans were not prepared at this writing. Because the natural
topography is comparatively flat overlot grading is anticipated to be minimal. Where
earthwork is required to levetthe ground sudace it appears maximum cuts and fills
wil! generally be on the order of 10 feet. Thicker fill (near 20 feet) will likely be
required to build road embankments to provide access from County Road 109 to
interior subdivision roads.
The majority of our exptoratory borings were terminated on large cobbles or
boulders. Boulders to 4 feet in diameter were observed in test pit excavations. We
MELROSE CORPORATION
CORYELL RANCH
CTUT GS.2647, PART II
believe earthwork can be accomplished with large earthmoving equipment such as
D-8 dozers with ripper blades and trackhoes.
The majority of subgrade for interior subdivision roads will be native gravels.
These gravels will provide very good subgrade support for pavements. Areas of cut
to reach road subgrade elevations and excavations for water features should provide
a significant amount of gravel which is an excellent soil to use to build road
embankments with.
Areas to receive fill must be properly prepared. Prior to fill placement, all
vegetation, and soft or organic soils should be removed. "Topsoil" is probably 8 to
10 inches thick over much of the road alignments. Subgrade soits in fill areas should
be scarified, moisture conditioned to within 2 percent of optimum moisture content
and compacted to at least 95 percent of standard Proctor maximum dry density
(ASTM D 6e8).
The on-site gravels free of organics or rock larger than 6 inches in diameter
or other deleterious materials can be used as fill to build road platforms. Fill part of
overlot grading or road building should be placed in 8 inch maximum, loose lifts,
moisture conditioned to between 2 percent below to 2 percent above optimum
moisture content and compacted to at least 95 percent of maximum ASTM D 698 dry
density. Fitt placed on steeper cross slopes between terrace benches should be
placed on excavated benches. The benches should be 8 to 'l2feet wide to allow for
heavy compaction equipment. Maximum bench height should be equal to or less
than bench width. Placement and compaction of fill should be observed and tested
during construction. The upper three feet of fill below road subgrade should be
with the native gravels after passing through a 3-inch diameter "grizzly" screen.
Areas of fill deeper than 3 feet below the planned subgrade can be with native
gravels with a maximum size of 6 inches. Where fills are below roads and are 10 feet
or more thick , the fill should be allowed to "cure" throughout at least one winter and
MELROSE CORPORATION
CORYELL RANCH
CTUT GS.2647, PART II
spring prior to placement of pavement. This will allow the majority of consolidation
to occur and not adversely effect the pavement surface.
Utility Construction
Utility trenches should be sloped or shored to meet local, State and Federal
safety regulations. Based on our subsurface exploration, , we believe the gravels are
Type G based on OSHA standards. OSHA recommends temporary construction
slopes no steeper than 1.5 to 1 (horizonta! to vertical). Excavation slopes specified
by OSHA are dependent upon types of soils and groundwater conditions
encountered. Seepage and groundwater conditions in the trench may down grade
the OSHA soiltype. Contractors should identify the soils encountered in excavations
and refer to OSHA standards to determine appropriate slopes. Excavations deeper
than 20 feet need to be designed by a professional engineer.
PRELIMINARY BUILDING CONSIDER.ATIONS
Preliminary Building Considerations
The predominant near surface soils are silty to clayey gravels with cobble and
boulder with some interbedded sand lenses. We anticipate native gravels will be
found at foundation grades at a large percentage of the building lots.
The gravels are judged to be slightly compressible when the moisture content
increases significantly and light to moderate loads, as normal with the type of
construction planned, are applied.
Buildings on the majority of lots can be founded with conventional spread
footings on native gravels. ln random areas native clays will be found at foundation
elevations. Excavation to basement depths will likely remove the clays and expose
gravels on some lots where clays are found. Where clay is found at lower level or
MELROSE CORPORATION
CoRYELL RANCH a
CTIJT GS.2647, PART II 9
r
basement level foundation elevations it is most likely that foundation
recommendations will be to extend footing excavations to expose the native gravel
or to over excavate the clays to the gravel surface and replace the removed clays
with granular structural fill to planned footing elevations. The structural fill should
be the native gravels after passing a 3 inch diameter "grizzly" screen.
Footings placed on the native gravels or on granular structural fill can be
sized with a maximum allowable soil pressure in the range of 3000 to 5000 psf.
lnterior Floors and Exterior Slabs-On-Grade
Excavations at the majority of the lots will expose silty to sandy gravels with
some sand lenses. We anticipate slabs-on-grade floor construction on the native
gravels or sands will be appropriate.
A minimum of 4-inch thick layer of free draining gravel should immediately
underlie slabs constructed below grade. This material should consist of maximum
2-inch diameter aggregate with less than 50 percent passing the No. 4 sieve and less
than 3 percent passing the No. 200 sieve. The free draining gravel will aid in
drainage below the slabs and should be connected to a perimeter underdrain system.
This layer will also act as a leveling course to provide a flat surface on which to
place slabs.
Structurally supported floors with a crawlspace below the floor, above the
native soils will likely be recommended on lots where clay is exposed at floor slab
etevation and extends more that a couple feet below the bottom of slab. An
atternative would be to remove the clay and replace the soil with a structural fill built
with the native gravels and sands after passing through a 3 inch diameter grizzly
screen. Floor slabs should not be supported partially on man-made fill and partially
on native soils or partially on clays and partially on gravels.. To reduce the adverse
effects of differential slab movement, floor slabs should be separated from all
MELROSE CORPORATION
CoRYELL RANCH o
CTUT GS.2647, PART II J
bearing walls and columns with expansion joints. Controljoints should be used in
floor slabs to reduce damage due to shrinkage cracking.
Below Grade Walls
We do not anticipate subsurface conditions which will preclude basement
construction. Basement excavations will encounter gravels and to a lesser extent
clays. Ground water wil! rise during and after snow melt in the spring. lt should be
anticipated that any excavation on these lots may expose perched ground water
during the spring runoff. Flood irrigation above the site also effects the ground
water level in building excavations.
Foundation walls will be subjected to lateral earth pressures. Foundation
walls at the back of some buildings may act a retaining walls. These walls are
restrained and cannot move, therefore, they should be designed for the "at rest"
tateral earth pressure. We believe an equivalent fluid density in the range of 45 to
55 pcf wil! be recommended to design for the "at rest" case. We recommend backfill
behind the walls be the on-site gravels and sands 3 inches in diameter or less and
compacted to at least 95 percent of standard Proctor maximum dry density (ASTM
D 698). Preliminary lateral earth pressure values do not include allowances for
sloping backfill, hydrostatic pressure of surcharge loads.
Water from surface run-off (precipitation, snow melt, irrigation) frequently
ftows through backfill ptaced adjacent to foundation walls and collects on the
surface of the comparatively impermeable soils occurring at the bottom of
foundation excavations. This can cause damp or wet conditions in basement and
crawl space areas of buildings. To reduce the accumulation of water we will most
likely recommend that a foundation drain be placed adjacent to foundation walls.
The drain should consist of a 4-inch diameter open joint or slotted PVC pipe encased
in free draining gravel. Drain lines should be placed at each level of excavation and
at least 1 foot below the towest adjacent finished grade, and sloped at a minimum 1
MELROSE CORPORATION3?,H'"'.:ff),"J^*,' 10
percent to a positive gravity outfall. Free draining granular material used in the drain
system should consist of minus 2-inch aggregate with less than 50 percent passing
the No. 4 sieve and less than 3 percent passing the No. 200 sieve. The drain gravel
should be at least 1.5 feet thick.
EARTH RETAINING STRUCTURES
Free standing retaining structures may be required. Several types of retaining
structures are used in the area and could be considered. Some examples of different
types of walls are listed below:
Anchor Walls
Tied-back walls tied back via soils nails or earth anchors
Steel pile and lagging
Continuous drilled pier walls
Conventional Retaining Walls
Reinforced concrete
Crib wa!!s
lnternally Stabilized Systems
Mechanically stabilized earth (MSE) structures
Friction rei nforcement systems
A "rock wall" is generally a landscaping feature. Rock walls greater than
approximately 6 feet in height, in our opinion, do not provide adequate resistance to
lateral loads. lf rock walls are used, we suggest a maximum height of 6 feet. The
wall should be battered at an angle of approximately 60 degrees. The width of the
base of the wall should be at leastlh the height with a wall face no steeper than 3/4
to 1 (horizontal to vertical).
MELROSE CORPORATION
CORYELL RANCH
CTL/T GS.2647, PART II 11
' Retaining walts wilt be subjected to lateral earth pressure from wall backfill
and surcharges. The lateral load on the wall is a function of wall movement. lf the
wall can move enough to mobitize the internal strength of the backfill, with
movement and cracking of the surface behind the wall, the wall can be designed for
the "active"earth pressure. tf ground movement and cracking is not permitted, the
wall should be designed for the "at rest" earth pressure. We suggest an equivalent
fluid density in the range of 40 to 50 pcf be used to design for the "active" case and
an equivalent fluid density of 45 to 55 pcf be used to design for the "at rest" cast.
The vatues are for preliminary wall designs. The design criteria should be confirmed
prior to construction. An equivatent fluid density of 250 to 300 pcf can be used for
the "passive" case. Backfilt of the walls is likely to be on the on-site gravels. These
soils are generatty not free draining. When compacted, these materials will probably
have compacted moist density in the range of 130 pcf. The angle of internal friction
will probably be on the order of 30 to 34 degrees. These soils exhibit small cohesive
strength, and cohesion should be negtected in preliminary designs. Lateral earth
pressure values do not include attowances for sloping backfill, hydrostatic pressures
or surcharge toads. A foundation drain should be placed next to the foundation of
any retaining watl. The 1 to 2 feet of backfill directly behind the wall should be a
"clean" gravel impofted to the site or a man made drain board product and provided
with positive gravitY discharge.
lnterior Subdivision Roads
Subgrade soils will generally be silty to clayey sands. We estimate a Hveem
Stabilometer Vatue (R-value, ASTM, D 2844, AASHTO T-1998) of 40 to 60.
An equivalent daily load application (EDLA) of 8 which represents a design
equivalent single axte load (ESAL) of 58,400 for a 20 year design period was used to
determine the pretiminary pavement sections for interior subdivision roads. Based
on our calculations, we recommend 5.0 inches of full depth asphalt or 3.0 inches of
asphalt underlain by 6.0 inches of compacted aggregate base where the subgrade
MELROSE CORPORATION
CoRYELL RANCH 12
CTUT GS.2647, PART II
is gravels. Where clay subgrade occurs we believe appropriate pavement section will
!ikely be 6.0 inches of full depth asphalt or 3.0 inches of asphalt underlain by 9
inches of aggregate base course. A geotextile fabric is recommended between clay
subgrade and aggregate base. Trash pick-up areas should be paved with 6.0 inches
of Portland cement.
, Prior to paving, the entire pavement subgrade should be scarified, moisture
conditioned to within 2 percent of optimum moisture content and compacted to at
least 95 percent of the standard Proctor maximum dry density (ASTM D 698). Fill
below pavement to achieve the subgrade elevation should be moistened to within 2
percent of optimum moisture content and compacted to at least 95 percent of ASTM
D 698 maximum dry density. Before placing base course, full depth asphalt or
, concrete, we recommend the entire subgrade surface be proof rolled with a (18
kips/axle) heavy pneumatic tired vehicle such as a loaded ten wheel dump truck.
reas which deform excessively should be overexcavated and recompacted or
otherwise stabilized.
Concrete pavement will require careful material and construction control.
I Concrete should have a minimum Modulus of Rupture (flexual strength) of 600 psi.
I A taboratory mix design shoutd have a compressive strength of at Ieast 3750 psi. We
recommend the concrete contain a minimum of 5.5 sacks of cement per cubic yard
and between 5 and 7 percent entrained air. Colorado Department of Transportation
Ctass P mix should satisfy the above requirements. lf a combination section is used,
the aggregate base course should have a minimum R value of 78. The base course
should be moisture conditioned to near optimum moisture content and compacted
to at teast 95 percent of the modified Proctor maxim dry density (ASTM D 1557).
Asphalt should have a total resistance (Rt) of at least 95 and should be compacted
' to 95 percent maximum Marsha! density. We recommend the asphalt be designed
with at teast 1650 pound Marshall Stability. The oil content, void ratio and gradation
need to be considered in the design.
MELROSE CORPORATION
CORYELL RANCH
CTIJT GS.2647, PART II 13
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SURFACE DRAINAGE
Surface drainage will need to control and channelize surface water down,
around and away from roads and buildings. Seasonal surface flows through building
footprints need to be re-routed away from the buildings. Any areas of potential
ponding water should be eliminated.
The performance of foundations and concrete flatwork is influenced by
moisture conditions in the subsoils. Wetting of foundation soils can be reduced by
grading the ground surface to cause rapid run-off of water away from the buildings.
Wetting or drying of the open foundation excavations should be avoided. The
ground surface surrounding the buildings should be sloped to drain away from the
buildings in all directions. We recommend a slope of at least 12 inches in the first
10 feet. Roof downspouts and drains shoutd discharge wetl beyond the limits of all
backfill. Buried discharge lines are not desirable.
LIMITATIONS
The criteria in this report is preliminary and not for construction. The criteria
is intended for use in developing preliminary designs. Design level criteria can only
be developed and published after review of grading and building plans for individual
lots. lndividuat site specific investigations will be needed. Our exploratory borings
and test pits were spaced to obtain a reasonably accurate picture of the subsurface.
Variations in these subsurface conditions not shown by our exploratory borings will
occur.
Our report was based on conditions disclosed by our exploratory borings and
test pits, results of laboratory testing, engineering analysis and our experience.
Criteria presented reflects anticipated construction as we understand it.
MELROSE CORPORATION
CORYELL RANCH
CTUT GS.2647, PART II
14
r
This investigation was conducted in a manner consistent with that level of
care and skit! ordinarity exercised by members of geotechnical engineers currently
practicing under similar conditions in the locality of this proiect. No other warranty,
express or implied, is made. lf we can be of further service or if you have questions
please cal!.
MELROSE CORPORATION
CORYELL RANCH
CTIJT GS.2647, PART II 15
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TH-5
TH-1 TH.2
,fr-
TH.5 TH-,'
ffi
TH-5 TH_7
ffi
TH-E
4
TH_9
T4
TH-tO
#rt
TH.1 1
Try
so/12
I
:==o No. GS-2647-=::ART ll
ooL
s
t
o.oo
oor
c
t
ooo
SUMMARY LOGS OF EXPLORATORY BORINGS AND PITS
Ftg. 2
-{I
.1.
Jo
]E-lrJ-1o-liIl
15J
TP-1
TP-5
TP-2
TP-6
TP-1 LEGEND
a
a
tr
ffi
l.
TP-7 TP-E
9i?,l"li.'uil'J-iJ""l, (looJj
ro mcdrum
Cloy,, ollty lo aondy yllh oobblc ondDoutocr,. loft lo mcdlum cllff, mold.brown. (CL)
3ffi , "';:?,,1",.'lln !t3rr. "!Xi, ". " ",
Grovel, allty. lo oloyey wllh oobble ond
ry, i': El. ;",.i,i,:5HI. "ly,I.r,:'.*
"..motsl, brown. (cc, cM, sM, Sc)-', --"--.
P1l^._:!n1pt", The. symbot 50/ehdtool.s thot 50 bl6w3 of o'i4opound hommcr folllng J0 lnohesw.r. rsgutrcd lo drlvi q 2.0 lnohe.u. tomplcr 9 lnchcs.
,3!f.'::ifl 5i I3" riJ#"J,'.%';pound hommcr folllng J0 lnchcrwcrc r.qulr.d .lo drlvc o 2.5 lnohe.u. lompl.r 12 lnohcs.
lndloolcc o bog sompla.
lndloolcs.drlll rlg rcfusot. Mulflplc
ilT,ii''",' ifl f "j: #.i:" l?,:1.
. "'.
F
F
T
NOTES:
Job No.
PART II
W ffiffi l. Explorofory_ bortngs vcrc drlllcd on
i.1?i1""nt'r,.To"r.2.o' oi
ee e wllh o
p. owci i ii e JiI "fi ;iil['l]"i.T" ol[,J
il
i3i"r EIB"[if io ""T."1,Ji,i..7
zs- o na
2. No frcc ground wotcr vos found
:ll,i"'J :li'",',.",tT"*",?,1:i,"1: on'
a. IIr: cxptorotory.bortngs ond plts
fi fi,,iiifl""jll rooJhc
scipronofl
o;;;
oontoln.d ln lhls rcporl.GS-2647
SUMMARY LOGS OF EXPLORAIoRy BoRtNGS AND ptTS
Flg. 5
:l
la
-El+J'
:j'
.J
:+
:j'
TP-J
F'
;[:
E_,.
E_,.
zIazl
Gx
UJs0zo6O-t
I.IJtq
=O-2o
r00
PCF
o/o
to l0
APPLIED PRESSURE - KSF
0.t
Sample of
From
crlY, SANDY (CL)107
1A9
NATURAL DRY UNIT WEIGHT=
NATURAL MOISTURE CONTENT=TH3 AT4FEET
Swell Consolidation
FIG.4Test Results
JOB NO. GS 2647
E
ADOITTONAL COMPRESSION U NDER
Sample of ctsAVELSllJ.r_LqM)From rn ,t - AT4 FEET
Sample of sRruo, srltv (sru)
From TH-2. AT 4 FEET
JOB NO. 1547
GRAVEL 45 O/O SAND
srLT& criY__le%
P|jSTICITY INDEX
LIQUID LIMIT
SAND 44 o/o
ltout6 t-tLrttr - vo--- - Yo
GRAVEL 34 o/o
srLT & CLAY_ 2a %
PTASTICITY INOEX
Gradation
Test FIG.5
E
- o/o
--:,,,,1:jt::::::::::::::::::::: !:::::-i-::::::[::::::1:.::::::::::::i:::::::;::::r:r:::::::lt-.-tt.-:::: --f::::i:-:::::1:-:::::i-:l
--.-::::;:;::::-::-,:::::::::::,::::.::::,i:,:::::i:::::::]:::::,::::::::l::::,::;::::I;:::::::l:::*::]:::!.:::::i:::::::;,.:..:.|.::7:1I.-llIll..,.:..:.;..1
so ,,,,,,,],,,,,,,,,:, ,,,,-,,,,,,.:,,,,,,:.,,.'..:,,,,.t1,.,,,..:-:,..:......,i..i.,..1...,,.,:.;':::,::f::i.,,--':i..:.:::1,:l:.:.i.:i ro
l
HR
,ls MlN.'15 MlN. 50 MlN.19 MlN. 4 MlN. 1 MlN. '2@ 'lm '5O '40 30 '15 '10'6 3t4' 1%'a
rO
3. 5'6'
-d
70:::::i:t --l.--..i.!--1
-----* 8O
_-.--.-L_
.@5 .m9 .019 .037 .149 .297 590 1.',19 2.O2.N 4.76 9.52 19.1 36.1
ri,-ii'-:-i-'l 10O
76.2 127 2@
1520.42
OIAMETER OF PARTICLE IN MILLIMETERS
cttY (PLASTTC) TO SILT (NON-PLASTIC)
Sample of cRnvet stttv ( cu)
FTom TH 3. AT 9 FEET
Sample of snruo, clRveY (sc)
FTom TH5- AT9FEET
GRAVEL 53 % SAND 38 O/O
stLr c clxY-- yo t-touto]Jtvtn- - yo
PUSftCfY tf'tOeX - o/o
GMVEL 12,/O
StLf C CLAY 49 7o
PUqSftCtW tt|OEX
Gradation
SAND 3g o/o
LtOUtO-Ltl,tn - Y"- -%
JOB NO. i:'+7 Test FIG.'J
E
Sample of SAND, SILTY (SM)GRAVEL 38 O/o SAND 52 %
srLr a cLAY 10 o/o utQutD tttvtti---- %
puesrtctry tr.loex ----- YoFTom TH6- AT4FEET
Sample of
From
_%
SILT & CLAY o/o
PLASTICITY INDEX
Gradation
SAND Yo
LtOUtO Uttvttf Zo
-
o/o
JOB NO. i5'i7 Test FIG.7
E
Sample of oRnvel stlw ( cr,a)From CoMBINED
GRAVEL 72 o/o
StUf aCt-nY S Yo
punsrtctw tNo-ex
SAND 23 o/o
LIOUID_ LIMIT - %
--- - o/o
Sample of
From stLT & cr-Av- %
Pt.ASTrCtT{ tN5-X
Gradation
SAND %
ltouto-LnttT- yo
-
o1o
JOB NO. io+7 Test FIG.3
JOB NO. GS 2647
TABLE . I
SUMMARY OF LABORATORY TEST RESULTS
SOIL CLASSIFICATION
BORING DEPTH
(FEET)
NATURAL
MOISTURE
(o/o)
NATURAL
DRY
DENSITY
(PCF)
nrrenaenc LIMITS UNCONFINED
COMPRESSIVE
STRENGTH
(PSF)
SOLUBLE
SULFATES
(vr)
NO.200
SIEVE
(o/ol
SWELL-
f/")
LIQUID
LIMIT
(o/o\
PLASTICITY
INDEX
(")
12
a
iL. SILTY (SM)
TH.1 4 6.6
SAND. SILTY {SM)TH-2 4 7.7
TH-3 4 18.9 107 -0.2
TH.3 9 5.7 I GRAVEL. SlLIY I(,MI
GRAVEL. CLAYEY (GC}35TH.5 4 4.5 49 GRAVEL. CLAYEY (GCI
TH-5 I 4.3
TH-6 4 5.8 10 SAND. SILTY (SMI
'Note: Swell due to wetting at an applied load of 1,000 psf'
Page 1 of 1
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GEOLOGIC HAZARD INVESTIGATION
CORYELL RANCH
GARFIELD GOUNTY, COLORADO
PrePared For:
MELROSE CORPORATION
P.O. Box 21307
Hilton Head lsland, SC 29925
Attention: Mr. Jack Best
Job No. GS-2647
Part I
January 29, 1999
CTL/THOMPSON, INC.
CONSULTING ENGINEERS
234 CENTER DRIVE t GLENWOOD SPRINGS, COLORADO 81601 I (970) 945-2809
TABLE OF CONTENT
INTRODUCTION
SITE DESCRIPTION
PROPOSED DEVELOPMENT
GEOLOGIC SETTING AND STRUCTURAL GEOLOGY
GEOLOGIC CONDITIONS
Bedrock Units
Surficial DePosits
GEOLOGIC HAZARDS
Surface Subsidence Hazards
PotentiallY U nstable SloPes
Debris/Mud Flow Hazards
Radiation
Earthquakes
DEVELOPMENT CONSIDERATIONS
Minable Mineral Resources
Site Excavation
Foundation Considerations
LIMITATIONS
FIGUREl -GEOLOGICMAP
FIGURE 2 - GEOLOGIC HAZARDS MAP
1
1
2
3
3
4
4
5
6
7
8
8
I
10
10
11
11
12
MELROSE CORPORATION
CORYELL RANCH
CTUT GS-2647, PART I
INTRODUCTION
The purpose of this investigation is to define general geologic conditions,
identify potential geologic hazards and estabtish preliminary mitigation concepts for
the proposed development of Coryell Ranch in Garfield County, Colorado. The
information presented herein is intended to assist the client in determining
development plans for the property. Preliminary foundation recommendations and
construction criteria will be presented in our Preliminary Geotechnical lnvestigation
to follow. This report was prepared based on a review of available published
geologic literature and maps, interpretation of aerial photographs and a
reconnaissance tevel geologic field mapping of the site'
SITE DESCRIPTION
The site consists of the coryell and Tomcat Ranches. coryell Ranch is an
approxima tely 272acre parcel located in the Roaring Fork River valley approximately
one mile northwest of the Town of Carbondale. The confluence of the Roaring Fork
and Crystal rivers is at the east central part of the property' Tomcat Ranch is an
approximately 8 acre parcel of land Iocated between coryell Ranch and the
conftuence of the Crystal and Roaring Fork rivers to the east. The Crystal River is
along the southeast property boundary. The Roaring Fork River is congruent with the
north property boundary. An abandoned railroad grade is aligned through the site
from the northwest to southeast. Some single family residential homes are on land
adjacent to the northwest and east. county Road 109 is aligned through the south
part of the propefi. lrrigated pasture land is on property above the site to the south'
Topographically the site can be visualized as severa! broad, gently undulating
terrace surfaces that step down to the Roaring Fork River at the north part of the
property and the Crystal River at the southeast part of the property' An upper
terrace is on adjacent property above the site to the south. From the upper terrace
ground surfaces drop approximately 200 vertical feet down steep slopes with
MELROSE CORPORATION
CORYELL RANCH
CTUT GS.2647, PART I
1
GEOLOGTC SETTING AND STRUCTURAL GEOLOGY
The site is situated on the axis of the Cattle Creek Anticline between the
Grand Hogback to the west and Red Table Mountain to the east. The Grand Hogback
is a monoclinal fold that defines the boundary between the Rocky Mountain Geologic
province to the east and the Cotorado Plateau Geologic Province to the west. The
white River uplift is to the north and the Elk Mountains are to the south.
The site is on the southwest side of the Roaring Fork River Valley at the
confluence of the Roaring Fork and Crystat rivers. The Roaring Fork River follows
the axis of the north trending Cattle Creek Anticline. The site is located on an
intermediate alluvial terrace that steps down to younger lower terraces that are
adjacent to the Roaring Fork and Crystal rivers. The lower level in the north part of
the property is in the erosional regime of the present day Roaring Fork River. The
lower level at the southeast part of the property is in the erosiona! regime of the
present day Crystat River. An older alluvia! terrace is above the site to the south
and west.
GEOLOGIC GONDITIONS
Based on regional geologic mapping and field observations bedrock below
the site consists of the Pennsylvanian aged Eagle Valley Evaporite. overlying the
bedrock are surficial deposits which have been deposited in more recent geologic
times. During post-gtacial and recent geologic time, the bedrock has been eroded
and weathered to form the Roaring Fork River Valley' Subsequent erosion has
covered the bedrock surface with terrace alluvium. Down cutting and erosion by the
Roaring Fork and crystal rivers has produced the present day surface topography'
Recent erosion by the rivers has altered the terrace alluvium to produce stream
aluvium on the lower leve! adjacent to the river. A small debris fan has been
deposited over the terrace alluvium in the southeast part of the site. The debris fan
is the resutt of tandslide/earthflow faiture and sedimentation from the sides of the
MELROSE CORPORATION
CORYELL RANCH
CTUT GS.2547, PART I
older terrace above the site to the south. lnterpreted geologic units are shown on
the enclosed Geologic Map (see Figure 1).
Bedrock Units
The Eagle Valley Evaporite is a sequence of evaporite rocks (salts) consisting
of gypsum, anhydrite, halite and sylvite interbedded with thin siltstone, sandstone
and carbonate beds. Due to tectonic stresses and overburden pressures, these
rocks have undergone plastic deformation resulting in highly contorted and "swirled"
bedding. The evaporite minerals are susceptible to the formation of solution cavities
by circulating ground water resulting in the collapse of overburden soils and
subsequent surface subsidence.
Surficial Deposits
The primary surface deposits at the site are alluvial terrace gravels, stream
alluvium, debris ftow alluvium (which, at this site, is similar to and includes
landslide/earthflow deposits), colluvium and man made fill. Terrace gravels consist
of clayey to sandy gravels with cobbles and boulders, silty clays and sand lenses'
The stream altuvium consists of silty to sandy gravels with cobbles and
boulders with interbedded silts and clays. Overbank deposits of silts and clays and
a thick surface layer of organic soils appear to be associated with the lower levels
adjacent to the Roaring Fork and Crystal rivers'
Debris ftow alluvium and landslide/earthflow deposits consist of poorly
sorted, matrix and ctast supported gravels and cobbles with a sand, silt and clay
matrix. tn genera!, debris flow deposits tend to be crudely stratified and are more
granutar towards the upper parts of the depositional fan. The colluvium consists of
gravels, cobbtes and boulders derived from the upper terrace. The colluvium is
MELROSE CORPORATION
CORYELL RANCH
CTUT GS.2647, PART I
4
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simitar in content to the terrace gravels but due to slope wash and gravity being the
primary depositional mechanisms the colluvium tends to be less dense.
Man-made fillgenerally consisting of the on site soils can be found at various
tocations across the site. The fill is associated with the construction of irrigation
ditches, access drives and the abandoned railroad grade. Several areas at the edges
of fietds have pites of cobbles gathered from the ground surface.
GEOLOGIC HAZARDS
Our geologic study identified geotogic hazards that need to be considered
during the planning and development phases of this project. None of the geologic
hazards identified will prevent the development of the property, however, geologic
hazards must be planned for and mitigated during site development. Geologic
hazards are shown on Figure 2'
The present landscape at the site has developed in the context of geologic
time and been influenced by human activities, primarily flood irrigation. Flood
irrigation has a major influence on stope stability, debris/mud flow and ground
subsidence. Post-glacial erosion and development of the alluvial terraces that define
the present surface topography has occurred over the past several thousand years.
Erosion was greater severat thousand years ago when climatic conditions were more
humid and annual precipitation rates were higher than at present. Flood irrigation
of the upper and lower terrace has been over approximately the Iast 100 years and
will not be continued on the lower terrace. tn the context of 100 year events
commonly used for engineering design and development consideration, this site
exhibits a low to moderate degree of geologic instability.
MELROSE CORPORATION
CORYELL RANCH
CTUT GS.2647, PART I
r
Surface Subsidence Hazards
The most significant geologic hazards at the site include surface subsidence
and slope stability. Potential for distress to structures built at the site from surface
subsidence is associated with several areas. ln our opinion, surface subsidence at
this site involves solution cavities that form in the underlying Eagle Valley Evaporite.
Evaporite minerals in the Eagle Valley Evaporite are dissolved and removed by
circutating ground water associated with flood irrigation and subflow related to the
Roaring Fork and Crystat rivers. The ground water circulates through the permeable
alluvial terrace gravels and stream alluvium forming solution cavities in the Eagle
Valey Evaporite. Overburden soits coltapse into the solution cavities. When caving
propagates to the ground surface, ground subsidence and/or sink holes occur.
Formation of sinkholes is random and can occur anywhere and at any time
in the geotogic environment at this site. These geologic conditions, however, are
common in other devetoped areas in the locale. An unquantifiable degree of risk is,
therefore, associated with development in the tocale and at this site. We believe that
comparative risk increases from the "moderate risk" (Subr)boundary to the "high risk"
(Sub,) boundary. Within the "high risk" area we consider it probable that structures
wil be affected by subsidence. We recommend no buildings be located within the
sinkhole or,,high risk" subsidence areas designated on Figure 2. Roads, utilities or
other structures should avoid the "high risk" areas or be designed to structurally
span an unsupported distance equal to at teast the width of the "high risk"
subsidence area.
It may be appropriate to site non-critical structures such as roadways and
utilities in the,,moderate risk" areas. Utilities such as water and sewer lines that pass
through the ,,moderate risk" subsidence areas should be designed with flexibility or
placed in vautts to accommodate comparatively large differential settlements or to
structurally span the subsidence area. Roads that pass over the "moderate risk"
subsidence areas may require increased maintenance but wilt likely not experience
MELROSE CORPORATION
CORYELL RANCH
CTUT GS.2647, PART I
sudden catastrophic faiture. lncreased maintenance may involve repair of cracks in
curb and gutter and asphalt surfaces. These measures could likely be performed
during normal maintenance intervals over the design life (20 years) of the pavement.
lf increased maintenance is not acceptable, roadways should avoid the subsidence
areas or be designed to span the subsidence areas'
The above discussed mitigation concepts are based on relative degrees of
avoidance associated with varying degrees of assumed risk. Extensive sinkhole
subsidence areas have been developed in other regions of the country such as parts
of Florida, Alabama and New York. Proactive mitigation has been used in these
areas to allow development of the type proposed for this site. Proactive mitigation
could be used to allow siting critical structures such as residences in the "high risk"
areas. We believe mitigation such as compaction grouting to stabilize sinkhole areas
and construction of grout curtains in the subsoils to control ground water circulation
may be appropriate. These measures would require additiona! geotechnical
investigation involving extensive deep drilling to develop geotechnica! criteria for
design level mitigation recommendations and may not be cost-effective.
PotentiallY Unstable Slopes
We observed some smal! slope failures on the slopes along the southwest
property boundary. These slopes and the stopes down to the Roaring Fork and
Crystal rivers have grades measured from published topographic mapping and
visuaily estimated at 30 to 50 percent. we believe these slopes may be at the soils
angle of repose and near stability/faiture equilibrium. Existing slope stability is
influenced by flood irrigation on property adjacent to and above the slopes' A recent
landslide that resulted in a debris flow occurred on the slopes of the drainage at the
southeast part of the site. This failure is the topic of our letter dated July 28, 1998
(CTL/T Job No. GS-24g4). Because of irrigation, slope stability at this site is not
strictly a .natural hazard". We betieve the stopes to the south of County Road 109
present a hazard to the development from irrigation induced Iandslide/earthflow
MELROSE CORPORATION
CORYELL RANCH
CTUT GS.2647, PART I
7
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failures. We have identified a potential landslide/earthflow run out zone (Plz) on
Figure 2. Our slope stability evaluation for the stopes to the west of County Road 109
is presented in our slope stability evaluation (CTL/T Job No. GS-2650)'
Steep slopes along the Roaring Fork and Crystal rivers have not exhibited the
types of failure as the older terrace slopes atong Gounty Road 109. we believe these
tower slopes to be stable and will remain stable so long as buildings are not sited at
the crest of the slopes and that excavations into the slopes are limited. Excavations
into the slopes should be evatuated on a case by case basis. Buildings or other
structures shoutd be set back a sufficient distance from the top of the slopes such
that a 1:1 (horizontal to vertical) tine extending down and away from the outer edge
of foundations does not emerge on the steep slopes'
Debris/Mud Flow Hazards
A debris fan is in the southeast part of the site. The fan has been built by
debris ftows, mud flows and landslide/earthflow faitures due to flood irrigation and
surface run-off from the upper terrace. Due to the smal! extent of the fan's drainage
basin and erosion control of vegetation and irrigation ditching associated with
agricuttural use on the upper terrace we believe the "natural" hazard from debris/mud
flow at the site is negligible.
Landslide/earthflow failures that result in debris/mud flows are man made
conditions caused by flood irrigation can be expected to occur at any time and
should therefore be mitigated. Mitigation recommendations for debris/mud flow
hazards are presented in our letter dated July 28, 1998 (CTL/T Job No' GS-2494)'
Radiation
We performed widely spaced spot gamma radiation measurements at 25
locations across the site. Measurements were taken with a Ludlum lnstruments, lnc'
MELROSE CORPORATION
CORYELL RANCH
CTUT GS.2547, PART I
8
Model No. 19 Micro-R-Meter. Measurements were taken on the various soils
occurring at the site. Our measurements were consistently 7 microRoentgens per
hour. Our experience indicates these measurements are consistent with norma!
background radiation in the region and are not cause for concern. Grading
operations will expose subsoils that could contain higher concentrations of
radioactive materiats. We recommend performing a gamma screening survey after
site grading operations and before construction of buildings to determine if areas of
high than background radiation exist. lf areas of higher than background radiation
are identified, mitigation may be indicated which may involve providing ventilation
and vapor barriers in crawl spaces and below floor slabs, capping the area with
,,ctean,' structural fill or re-configuring development in the area, depending on the
level of radiation.
Earthquakes
The site is located in the Western Mountain Seismotectonic Province. We
betieve faults in the area can be grouped into two general types. one type of fault
is related to the large scale continental tectonic environment. These faults penetrate
deep into and likely through the earth's crust and are on the order of 30 mi!!ion
years old and older. Although these faults are potentially active and able to produce
large earthquakes we believe they are essentially dormant and unlikely to cause
earthquakes. A second type of fault is retated to comparatively small scale localized
geologic conditions. We believe these faults are active and likely caused most of the
historic earthquakes in the area.
One historic earthquake centered in the Glenwood Springs area west of the
site exhibited Modified Mercalli tntensity of V. A second earthquake with its
epicenter tocated between Glenwood Springs and Gattle Creek had a magnitude in
the range of 4.0 to 4.9. Several earthquakes have occurred with epicenters located
in the Thompson Creek area south of Carbondale with magnitudes of up to 4.9. ln
our opinion, ground accelerations associated with an earthquake intensity of Vl can
MELROSE CORPORATION
CORYELL RANCH
CTUT GS.2647, PART I
oJ
E
be expected at this site. An intensity vl earthquake would be felt by all and may
result in cracking of weak masonry structures but would cause negligible damage
to structures of good design and construction. The region is in the Uniform Building
Code, Seismic Risk Zone 1, however, the Colorado Geologic Survey recommends
considering all of colorado except the northeast corner of the state to be in a
Seismic Risk Zone 2. The potential for an earthquake of sufficient intensity to cause
significant damage to structures during a design serviceability of approximately 100
years at the site is low. structures in the development should be designed to
withstand moderately strong ground shaking with littte or no damage' We
recommend anticipating horizontat ground accelerations on the order of 0.035G to
o.o7c in the design of structures to be built at this site. wind loads typically govern
structurat design for dynamic loads in this area'
DEVELOPMENT CONSIDERATIONS
Geotogic conditions and geologic hazards discussed above will influence
various aspects of development. Construction activities and other human activities
dependent on geologic conditions will influence development plans. The following
paragraphs address minable mineral resources, site excavations and foundation
considerations.
Minable Mineral Resources
The altuvial terrace gravels on the site are potentially useful for various
construction purposes. The terrace gravels are potential sources of sand and
aggregate. Areas mapped as terrace gravel are approximate and would require
further field evatuation to determine thickness, lateral extent and quantity' ln
addition, laboratory testing would be necessary to determine quality and suitability
of the sands and gravels for use as aggregate
MELROSE CORPORATION
CORYELL RANCH
CTUT GS-2647, PART I
10
r
We observed no evidence of mineral fuel or ore deposits or underground
mining activity at the site. ln our opinion, geologic hazards due to past mining
operations are not present at the site.
Site Excavation
We anticipate excavations will generally encounter altuvial terrace gravels and
stream alluvium. These deposits can generally be excavated with large earthmoving
equipment, however, large boulders may be encountered in some areas'
we believe surficiat deposits with slopes in excess of 25 percent should be
considered to be potentially unstable. Excavations into potentially unstable slopes
should be limited and evaluated on a case by case basis. we anticipate most
excavation at the site can be accomplished by laying back excavated slopes' ln
areas where site geometry limits the laying back of excavated slopes, excavations
witt need to be reinforced or braced.
Foundation Considerations
The alluvial terrace gravels and stream alluvium will generally provide good
bearing for shallow foundations and road construction. Some compressible clay or
silt lenses requiring removal below structures will likely be found in localized areas
defined as terrace gravels or stream atluvium. Thicker layers of compressible and/or
organic soils are likely to be found near the Roaring Fork and crystal rivers' we
recommend site specific soils and foundation investigations be performed for
structures to be built at this site. Footing foundations should be appropriate for the
majority of buildings and other structures at the site. slab-on-grade floors are likely
appropriate on the natural gravels'
MELROSE CORPORATION
CORYELL RANCH
CTL/T GS-2547, PART I
11
r
LIMITATIONS
The discussion of geologic conditions presented herein is generalized and
preliminary. More detailed studies may need to be performed to better define
geologic conditions, develop mitigation recommendations and develop geotechnical
criteria for the actual construction. We need to be informed as plans are
conceptuatized and developed to allow geologic and geotechnical input. we
recommend that detailed, site specific geotechnica! investigations be performed for
buildings and roadways built at this site'
This investigation was conducted in a manner consistentwith the level of care
and skill ordinarily exercised by geotechnical engineers and engineering geologists
currenqy practicing under similar conditions in the locality of this project. No other
warranty, express or implied, is made.
we appreciate the opportunity to work with you on this project. lf we can be
of further service or if you have questions regarding this report, please call'
MELROSE CORPORATION
CORYELL RANCH
CTUT GS.2647, PART I
(10 copies sent)
12
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February 2, 1999
Melrose Corporation
P.O. Box 21307
Hilton Head lsland, SC 29925
Attention: Mr. Jack Best
Subject:Additional Recommendations
Slope Stability Evaluation
Slopes Adjacent to County Road 109
Coryell Ranch
Garfield Gounty, Colorado
Job No. GS-2650
Gentlemen:
We have viewed the most recently proposed building lot layout and
performed additionalevaluation regarding set-back distance from the north shoulder
of County Road 109 and berm height as part of a plan to protect buildings from run
out from a earth flow/debris flow event. The following paragraphs present results of
our plan review and additional mitigation recommendations.
We previousiy recommended a 200 feet setback from the road shoulder and
a 5 to 6 feet high berm to contain and/or divert run off material. At the affordable
housing area at the east end of the development some lots are closer than 200 feet
to the road. Specifically Lots A2 thru A5 and Lots 18,25, and 26 are partially within
200 feet of the road shoulder. Lot A-6 is completely within 200 feet of the shoulder.
It is best if structures on these lots can be located at least 200 feet from the
shoulder. An acceptable alternative would be to increase the berm height to at least
7 to 8 feet high to protect the buildings. A second alternative would be to elevate
the building footprints at least 8 feet above the bottom of the road shoutder
embankment.
CTL/THOMPSON, INC.
CONSULTING ENGINEERS
234 Cr:Nrr H r)HtVh . GLENWOOD SPRINGS. COLORADO81601 t (970) 945'2809
r
When the proposed final grading scheme for protecting structures is
available we should meet with the owner, planner and civil engineer to review the
plan and to allow comment.
We appreciate the opportunity to work with you on this project. Please call
if you have questions.
Very truly yours,
MELROSE CORPORATION
CORYELL RANCH
JOA NO. GS-2650
r
March 2, 1999
Melrose Corporation
P.O. Box 21307
Hilton Head lsland, SC 29925
Attention:
Subject:
Mr. Jack Best
Additional Recommendations
ContainmenUDiversion Berm
Coryell Ranch
Garfield County, Colorado
Job No. GS-2650
Gentlemen:
We have viewed the most recently proposed building lot layout (dated March
1, 1999) and performed additional evaluation regarding set-back distance from the
north shoulder of County Road 109 and berm height as part of a plan to protect
buildings from run out from an earth flow/debris flow event. The following
paragraphs present results of our plan review and additional mitigation
recommendations.
We previously recommended a 200 feet setback from the road shoulder and
a 5 to 6 feet high berm to contain and/or divert material from an earth flow/debris
flow event (our letter dated January 18, 1999). At the affordable housing area at the
east end of the development some lots are closer than 200 feet to the road.
Specifically Lots A2 thru A5 and Lots 18,20,21,25, and 26 are partially within 200
feet of the road shoulder. Lot A-6 is completely within 200 feet of the shoulder.
An acceptable alternative to the above set back distance and berm height
recommendations would be to increase the berm height to at least 7 to 8 feet high
to protect the buildings. A second alternative would be to elevate the building
footprints at least 8 feet above the bottom of the road shoulder embankment.
At a March 1, 1999 meeting of design team members we were asked what the
height of the berm should be at each of the two possible alternative alignments
shown on Figure 1 as Alternative "A" and Alternative "8". At the Alternative "A"
location which is directly adjacent to the road we recommended a 7 to 8 feet high
berm. At the Alternative "8" location we recommend a berm 7 to 8 feet tall adjacent
CTL/THOM PSON, INC.
CONSULTING ENGINEERS
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to the road decreasing in height to 5 or 6 feet at 200 feet from the road.
The berm can be built with on site soils free of organic matter or other
deleterious material. The top of the berm should be at least 4 feet wide and side
slopes should be no steeper than 2 to 1 (horizontal to vertical). The berm fill should
be moisture treated to within 2 percent of optimum moisture content and compacted
to at least 90 percent of standard Proctor maximum dry density (ASTM D 698).
When the proposed final grading scheme for protecting structures is
available we should meet with the owner, planner and civil engineer to review the
plan and to allow comment.
We appreciate the opportunity to work with you on this project. Please call
if you have questions.
Very trul yo,
copres s
MELROSE CORPORATION
CORYELL RANCH
JOA NO G5.2650
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JOB NO. GS-2650
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March 2, 1999
Melrose Corporation
P.O. Box 21307
Hilton Head lsland, SC 2gg25
Attention:
Subject:
Mr. Jack Best
200,000 Gallon Water Tank
Coryell Ranch
Garfield County, Colorado
Job No. cS-2566
Gentlemen:
A 200'000 gallon wateristorage tank will be located at the transition between
the bottom and side slope of dn existing incised drainage. The following paragraphs
describe the planned location, the tank, subsurfale conditions found in anexploratory boring drilled above the site and in exploratory pits excavated adjacentto the planned tank footprint and presents geotechnical and constructionrecommendations from a geqtechnical perspective.
I
The tank tocation is atithe bottom of a topographic knob approximatety 400
feet from the shoulder of Couinty Road 109 up a' drainage to the south (see Figure1). The top of the knob is th-e comparatively flat surface of an upperterrace with aground elevation of approximately 6300 feet. Naturat ground surface grades at the
tank footprint are between 10 percent and 40 percent at elevations between 61g0 and
6200 feet. The tank site is geqerally shielded from the center of the drainage by the"knob". vegetation is pinon qine, scrub oak and native grasses and weeds.
A steel tank with a 200,000 gallon capacity is planned. Floor elevation will be
6200 feet- The tank will be aflproximately 32 feet tall with a 32.6 foot diameter and
be founded on a ring shaped fpoting. A 10 feet wide access road will be adjacent to
the outside of the tank. The tdnk has been located to minimize required excavation
into the natural slope. We redommend a cut and fill batance pad be constructed for
I CTL/THOMPSON, INC.i
iI CONSULTING ENGINEERS'llot r'Jll titlrtitr''t r (tt tr.rw()()r ):ip11rN(-,:; (r()t()qnr)()3!(,or r rlr,.1),).r';.,ii(;,r
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the tank to minimize excavation into the east side of the drainage.
Subsurface co.ndition$ were exptored by drilling an exploratory boring in theterrace above the tank site amd excavating expioratory-pits into the existing groundsurface adjacent to the planJred tank location. ln our boring we found G inches oforganic sands above 48 feet of silty sand with gravets. ln our exploratory pits wefound 2 feet of medium dense clayey gravel w-ith organics underlain by mediumdense to dense, slightly moi$t clayey gravels with cobble and boulder. We considerthe natural clayey gravels a good soil on which to build the water tank.
The tank should not Sear in part on the natural soits and in part on fill. Werecommend the tank be founlded by footings on a 10 feet thick mat of structural filtat a maximum allowable soili bearing pressure of 4000 psf. The fiil should be buittwith a silty to clayey graveliwith a maximum diameter rock size of 3 inches andbetween 10 and 30 percent gilt and clay size particles (passing the -200 sieve). Agood source of fill material would probably be gravels from water featureexcavations ptanned at the Coryel! Ranch deveiopm"nt. fn"=e soils can be mixedwith debris flow material thaticurrently is in the drainage. The granutar structural filtshould be moisture treated fo within 2 percent of oitimum moisture content andcompacted to at least 95 percfnt of modified Proctor dry density (ASTM D 1557). Theplacement of fil! should be checked for satisfactory moistrre and density during fillplacement- We suggest miximum loose lifts no thicker than 10 inches. Theexcavation floor should be pcarified to at least 10 inches, moisture treated andcompacted and then proof rdlled to check for soft areas prior to ptacement of theinitial filt lift- We estimate diffprential settlements of approximatety 1 inch across thetank footprint.
I
An approximate 8 feet fleep cut into the native slopes wiil be required to reachthe bottom of fil! elevation 8190. Additional excavations beyond the minimumrequired should be avoided tb reduce the likelihood of towering the existing slopestabitity. Final slope grades fbr the native gravels should not bJsteeper than 1.5 to
1 (horizontal to vertical). Larger rocks exposed in the final slope cut face should beremoved to the extent practiqal.
We recommend that the uphill part of the fill pad for the tank be rock armoredto mitigate erosion. The rolk armor should be with larger rock present in thedrainage channel and extend approximately 150 to 200 feet up from the tank. Wesuggest a minimum vertical lheight of 10 feet for the rock armoring. The ownershould consider grouting the iock armor to increase resistance to erosion and scourfrom debris flows.
An earth fill berm shotrld be constructed above the tank, between the tankand the side of the drainage to deflect debris flows. The berm shoutd tie into thenative slopes above the tank ind the side of the fitl pad below the tank. The armor
layer on the uphill part of the fill pad should extend along the uphill part of the berm.
The berm can be built with reeidily available debris flow material. The fill should bemoisture treated and compacted during placement. We suggest a moisture content
MELROSE CORPORATION
CORYELL RANCH
JOB NO GS,?556
within 3 percent of optimunp moisture content and a minimum compaction of 85
percent of ASTM D 1557. I irepresentative of CTUThompson, lnc. should visit the
site to observe that construction practices are appropriate. When plans showing the
berm and rock armor locatiqn are available we should be given the opportunity to
review them.
l
i
We appreciate the coritinuing opportunity to work with you on this site. lf you
have questions, please call.
Very truly yours,
i
(5 copies sent)
JM:cd
MELROSE CORPORATION
CORYELL RANCH
Joa No. GS.2s66
r
March 2, 1999
I
i
Melrose Corporatiofl ,
P.O. Box 21307
Hilton Head lsland, SC 29925
Attention: Mr. Jack Best
i
I
Subject: Utilities and Roads Crossing
Subsidence Areas
Coryell Ranch
Garfield County, Colorado
Job No. cS-2690
Gentlemen:
i
ln some cases utility liires will cross mapped subsidence areas. Roads may
also cross subsidence areas.i One method to limit differential setttement of utitities
and roads crossing subside;rce areas would be to over-excavate below the utitity
trenches and/or road subgraide elevation and backfill the excavation with densely
compacted granular structurial fill. We suggest a subexcavation of at least 3 feet
below the bottom of utility trienches or road subgrade elevations. The excavation
should then be backfilled wit! on site gravels, moisture treated to within 2 percent
of optimum moisture contentland then compacted to at teast 95 percent of modified
Proctor density (ASTM D 1551). The above mitigation witl not negate the possibility
of damage from differentia! sletttement but wil! reduce the setttement.
Ptease call if you havd questions.
I
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CTL/THOMPSON, INC.
CONSULTING ENGII.II:.E NS
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Very truly yours,
flebhrins.if.E:
h Manaqdr 2,
(5 copies sent)
i
CORYELL RANCH
MEMORANDUM
DATE:
TO:
FROM:
RE:
FEBRUARY 2, 1999
JOHN MECHLIN
IAN FIAUSE
CORYELL'WATER STORAGE TANK SITE
On February 1,1999,I met pith John ivlectrling of CTL Thompson, Dave Kotz of Schmueser
Gordon Meyer and Jon White of the Colorado Geologrc Survey on sight at the proposed water
srorage tank locatron for the Coryell R.rnch Project. It should first be noted that Jon White was not
reviewing the tank site in an offiEial capaciry but there to offer his informal oprnions and advise on
the proposed location. Jon will not be able to officially corrrrnent on the profect until Coryell Ranch
LLC has submrrted the Prelimrnarv Plan to Garfield County and it is then referred to the Colorado
Geologic Survey.
A.ll parues present concurredithat thrs site would work if the followrrg mitigation measures were
in place. First, a deflecuon berm phould be placed to the west of the tank at the toe of ridge down to
the flow lne of the draw. This deflection berm would be constructed out of the deposits left n the
draw from lastJulv's debris flow.l The berm would then be armored by large bou]ders taken from the
same locatron. Secorrdly, the tarlk will be placed on a strLrctural fill comprised of a mix of material
from the draw and 3' mmus sands and gravels excavated from the lake construcuon irr Coryell
Ranch. The tank wrll sit on a concrete footer poured on this strucnrral Frll.
I believe this summarizes rvhat was discussed in the field. It you have ury addiuorrs or
corunellts, please contlct me at your earliest convenience.
i
I
I
Cc: Jon White. Colorado Gei,logic Survey
E-:;H
November 16, 1998
Melrose Gorporation
P.O. Box 21307
Hilton Head, SC 29925
Attention:
Subject:
Mr. Jack Best
i
Geotogic Con$ultation
Coryell Ranchl
Garfield Counfy, Colorado
Job No. GS-2q66
Gentlemen: I
iAs requested we plflced numbered stakes in the field to be surveyed by
Schmueser Gordon Meyer tg define surface subsidence (sink hole) areas and modify
our recommendations preiented in our Phase 1 Geologic lnvestigation for the
subject site (CTLff Job Noi. GS-l889, dated July 26, 1998). A development plan
showing subsidence area bpundaries is shown on the attached Figure 1.
:
On October 19, 1998iour engineering geologist, Mr. Liv Bowden, visited the
site and placed numbered survey lathe defining the approximate boundaries of what
we consider high risk subsidence areas. The lathe locations were surveyed by
Schmueser Gordon Meyer 4nd conveyed to us on a conceptual development plan.
We have modified our original subsidence area boundaries and subdivided them
into "moderate risk" and "hi$h risk" areas on the attached Revised Subsidence Area
Hazards Map. Subsidence arieas are subdivided into areas defined as Subl and Sub2.
The numerals indicate thel relative degree of risk of damage to structures from
potential ground subsidenpe (1 delineates a high degree of risk,2 delineates a
moderate degree of risk).
I
Formation of sinkholls is random and can be occur anywhere and at any time
in the geologic environment at Coryell Ranch. These geologic conditions, however,
are common in other develOped areas in the locale. An unquantifiabte degree of risk
is, therefore, associated wiith development in the locale and at Coryell Ranch' We
believe that comparative rilsk increases from the 'moderate risk" boundary to the
high risk' boundary. Within the "high risk" area we consider it probable that
structures will be affected by subsidence. We recommend no buildings be located
CTL/THOM PSON, INC.
CONSULTING t- NG llJ [': E: t-l-S
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within the sinkhole or "high risk" subsidence areas designated on Figure i. Roads,
utilities or other structures should avoid the "high risk" areas or be designed to
structurally span an unsupported distance equal to at least the width of the ,,high
risk" subsidence area.
' lt may be appropriate to site ncin-criticat structures such as roadways and
utilities in the "moderate risk" areas (Sub2). Utilities such as water and sewer lines
that pass through the "moderate risk" subsidence areas should be designed withflexibility to accommodate comparatively targe differentia! setflements or to
structurally span the subsidence area. Roads that pass over the ,,moderate risk"
subsidence areas may require increased maintenance but wilt likely not experience
sudden catastrophic failure. lncreased maintenance may involve repair of cracks in
curb and gutter and asphalt surfaces. These measures could likely be performed
during normal maintenance intervals over the design life (20 years) of the pavement.
lf increased maintenance is not acceptabte roadways should avoid the subsidencer areas or be designed to span the subsidence areas.
T
The above discussed mitigation concepts are based on retative degrees of
avoidance associated with varying degrees of assumed risk. Extensive sinkhole
subsidence areas have been developed in other regions of the country such as partsof Florida, Alabama and New York. Proactive mitigation has been used in these
areas to allow development of the type proposed for Coryell Ranch. proactive
mitigation could be used to allow siting critical structures such as residences in the
"high risk" areas. We believe mitigation such as compaction grouting to stabitize
sinkhole areas and construction of grout curtains in the subsoits to control ground
water circulation may be appropriate. ln our opinion, these measures woutd require
extensive deep drilling to develop geotechnical criteria for design tevel mitigation
recommendations and may not be cost effective.
we appreciate the opportunity to work with you on this project. tf you have
questions, please call.
Very truly yours,
CTL/THOMPSON, 1
Wilson L. "Liv" B
Engineering
LB:JM:cd
(5 copies sent)
MELROSE CORPORAIION
CORYELL RANCH
JOB NO GS.2566
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Professional Wetlands ConsultinS, lnc.
March 8,1999
Ian Hause
Coryell Ranch, LLC
9929 State Highway 82
Carbondale, Colorado 81623
RE: Coryell Ranch
MAR 1 1 t99g
Dear Mr. Hause:
I am writing to summarizethe status of wetlands work completed at the Coryell Ranch in Garfield
County, Colorado. A wetlands delineation and investigation was conducted at the site in the spring
of 1998, at which time wetlands boundaries were field delineated and mapped. Wetlands mapping
for the Coryell Ranch has been verified in writing by the U.S. Army Corps of Engineers.
Site plans for the Coryell Ranch avoid wetland impacts, such that a Section 404 Permit is not
required for proposed site development work at the Coryell Ranch. The utility line crossing at the
Roaring Foik River is pre-authorized under Section 404 Nationwide Permit #12 provided that the
terms and conditions of the permit are complied with. The utility crossing rvill comply with
Nationwide permit #12, and,plans for the crossing will be sent to the U.S. Army Corps of Engineers
to insure that the crossing is pre-authorized under Nationwide Permit #12'
The proposed Coryell Ranch development plan can be constructed in compliance with cunent
Section 404 wetlands regulations. Project plans are protective of wetlands resources and the Roaring
Fork River. please coniact me if you have any questions or need additional information.
David Steinmann
cc: Sue Nall, U.S. Army Corps of Engineers
2 o B-:g--3- q-e Boulder, CO 80
Sincerely,
303/444-1715 ' FAx 303/443'6141
302
REPLY IO
aTrExrlox of
tory Branch
DEPARTMENT OF THE ARi,IY
U.S. ARMY ENGINEEB OISTBICT, SACRAMENTO
CORPS OF ENGINEERS
I325 J STREET
SACBAIIENTO. CALIFORNIA 95E1'l'2922
March 4, 1999
(199875207)Regula
Mr. David St.einmann
20 Rim Road
Boulder, Colorado 80302
Dear Mr. Steinmann:
we are responding to'your written requesL d1!ed February 10,
lgg9, oE oehaif of th6 ueliose Company , fot verificat,ion of a
j".i"ai"Lional determination on the Coryell Ranch' This property
i= Iocated adjacent to (south of) the Roaring Fork River
approximately two mil-es northwest of Carbond'ile within the NE l/4
of section 29, Township 7 south, Range west., Garfield county,
Colorado.
Based on a site inspection by Susan Bachini NaI1 of this
office in April 1998, w€ have d.etermined that your wetland
u"""ar=v deiineation is accurate. The ptan referenced below is
an accurate a.pi"iion of t.he limits of Federal jurisdiction under
section 404 of the Clean water Act. The plan is label-ed:
CorYell Ranch
Fj.nal Wetland MaP
Date 02'08-99
This verification is valid for a period of five years II.9*
the date of t.his letter and. is based on information supplied by
you. If that information proves to-be false or incorrect, we
,iff adjust our determinatlon accordingly. Please.be aware, that
in the future we prefer to have final wetland mapping submitEed
within a few weeki or months after a field verification has been
perforrned. we have assigned number L99875207 to t.his
determination. Please contact Ms. NalI and refer to this number
i"i urry additional correspondence on this matter and for permit
requirlments at (970) 243--1199, extension 15 or the ptess
beIow.
Colorado
402 Rood Avenue, Room 142
Grand Junction, Colorado 8150L-2563
ril rrLYL,I t ,/
K"" '/lL';--McNuref uorthwesternfulatory office
,T""
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Copies Furnished:
Mr. Jack Best., The Melrose ComPanY,
Head, South Carolina 29925
Mr. Mark Bean, Garfield CountY, 109
Glenwood SPrings, Colorado 81-60r
Post Office Box 2L307, Hilton
8th Street,, SuiEe 303,
DEPARTMENT OF THE ARMY
U.S. ARIIY ENGINEER OISTRICT. SACRAMENTO
CORPS OF ENGINEEFS
I325 J STREET
SACFAMENTO. CALIFORNIA 9581'l'2922
JanuarY L3, 1999
(19987s207)
-:--=.--_-__
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Regula
NEPLY IO
arrExllol{ oF
tory Branch
Mr. Jack Best
The Melrose ComPanY
Post Office Box 21307
Hilton Head, South Carolina
Dear Mr. BesL:
We have assigned number
refer to t.his number in anY
of f ice concernj-ng this site.
contact Ms. Susan NaIl of this
1199. Again, Your cooPeration
29925
I arn responcing to a letter dated Novern}er 30, 1998, from
Professional WetlanE Consulting concerning the removal of an
unauthorized, gravel berm on the Coryetl Ranch near Carbondale'
This dike ,"r -first noticed during a routine site inspection with
your consultant last spring. It *as located within a riparian
i,vetland along the west-bank of the Roaring Fork.River just
downstream of its confluence with the Crystal River within the NE
L/4 NE l/4 of Section 29, Township 7 South, Range 88 West,
Garfield County, Colorado.
The clean-up work has satisfactorily restored. the riverbank;
and, the area should revegetate quickly based on the numerous
wiliow plants nearby. We wish to commend The Melrose Company -and
yo1-,r co'nsultant, tttr. David Steinmann wit.h Professional Wetland
6onsulting, for your efforts to return this riverbank to its pre-
existing lrade. This riparian area along the Roaring Fork River
providel I variety of important functions and vafues including
available floodpllin, wiiatife habitat, recreation and aesthetics.
The purpose of Section 404 of the Clean Water Act is to insure
that thl physical, biological, and chemical integrity of our
nation's waters is proteEtea. Opportunities for restoration and
enhancement of such waLers are strongly supported'
L99875207 Lo this case. Please
future correspondence with this
If you have any questions, Pleaseoffice at telePhone (970) 243-
on t.his matter is aPPrecj-ated.
eteJ.!,r
df I+. McNure
Chief , Nort,hwestern Colorado
Regulftory office
(402 Rodd Avenue, Room 142
Grand Junction, Colorado 8150L-25Q?,,,
0tFiY[LL fiAl,icfi, f+ (t
,t i, .',t -Y'irl.*5H
Copies Furnished:
Mr. David Steinmann, Professional Wetlands Consulting,
Incorporated, 20 Rim Road, Boulder, Colorado 80302
Mr. Robert Caskey, Colorado Division of Wildlife, 7LL Independent
Avenue, Grand Junction, Colorado 81501
Mr. Paul von Guerard, Subdistrict Chief, U.S. Geological Survey,
764 Horizon Drive, Suite L25, Grand Junctj-on, Colorado 81505
Ms. Susan T. Moyer, U.S. Fish and Wildlife Service, 764 Horizon
Drive, South Annex A, Grand,Junction, Colorado 8I505-3946
Ms. Sarah Fowler, U.S. Environmental Protection Agency, BEPR-EP,
999 18th Street, SuiLe 500, Denver, Col-orado 80202-2466
Mr. Mark Bean, Garfield County, 109 8t.h SLreet, Suite 303,
Glenwood Springs, Colorado 8L501
I
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Tne M*nosr CouPanrY
POST OFFICE DFAWEB 213O7
HILTON HEAD ISI-ANO' SC 29925
(ao3) 745-6644
January 6, 1999
Kevin Wright
Colorado Division of Wildlife
50633 Highway 6 &24
Glenwood Springs, CO 81601
Re: Coryell Ranch
Dear Kevin,
per our on-site meeting on December 15, 1998 at the Coryell Ranctr, I would like to summarize our
conclusions:
l. Lots I-6 will have a 50' setback from the top of the slope above the river. Landscaping will be
permifted to top of slope.
5.
6.
7.
8.
9.
Los 7-12 will have a 75' set back from the back of lot line. Landscaping will be permined to lot line.
River access will be year round with access restncted to designated areas December ttuough March'
The river park area will be closed to snowshoers, cross-countr.v skiers. etc. from December through
March. D-unng tius time, fishermen access will be restricted to designated access poins on.ly.
Fencing shall be per specifications in your letter dated October 5' 1998'
No livestock shall be permitted within the subdivision.
There will be only one dog allowed per drvelling unit with kennel restrictions. Homeowners will be
encouraged to keep all cats inside.
No development on rhe west side of Counry Road 109 with the exception of a water tank and:rn access
road
Every effort will be made to minimrze damage to vegetation when water and sewer lines are installed
across the Roaring Fork River.
If a bike path is constructed. it will be placed on the east side of Countv Road 109.
Wildlife brochures will be handed out at closings. Annuai HOA meetings will address wildlife issues.
The DOW will not be held liable for wildlife damage to landscaping or plants.
2.
3.
4.
t0.
I l.
t1
I
I
I
I
I
Kevin Wright
Page Two
January 6,1999
13. Homeowners will be responsible for disposal of any wildlife carcasses which may happen upon their
propeny.
14. Proper permitting and licensing shall occur in habitat enhancement and trout stocking within private
ponds.
If you have any questions or comments. please call me. If this is accurate, please acknowledge so by
signing below.
Thanks for your help.
/- /Lt/-"7
Sincerelv- -2Z
Ian Hause
Communitv General lvlanager
C:
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UuRYELL HANCH #
0 \,.tr-l^*,,,,"k[t
January 18,1999
RE: Electric service to Coryell Ranch LLC
Mr. Ian Hause
Aspen Glen Golf Co.
9929hwy 82
Carbondale, Co 81623
contact me if you require additional information.
Co$iqlly;
Dear Mr. Hause;
public Service Company will provide electric service to your development known as CORYELL RANCH
LLC in Garfield Counry. Service to the development will be provided in accordance with the extension
policy cunently on file and in effect at the time service is applied for'
public Service Company looks forward to the opportunity of providing your energy requirements. Please
GrPubtic service'
il
Don Currie
Planner
Public Service ComPanY
1995 Howard Ave
Rifle, Co
t-970-625-6001
rr!7-rZ,cry,ce,ev
2/2/9c)
RE: CoryellRanch
Ian Hause
9929 Hwy.82
Carbondale CO 81623
Dear Ian:
I am writing to inform you that KN Energy does have adequate facilities and supply to
serve the proposed C,rryell Ranch and its approximate 75 homes. Supply gas would be taken
from the existing high-pressure main paralleling county road 109 via construction of a
distribution regulator station and infrastructure distribution piping or from a main line
extension connecdng to the existing Aspen Glen distribudon system.
Please keep us posted as to the progress and of significant changes to the proiect.
Sincerely,
KN Energy, lnc.
0096 County Road 160
Glenwood Springs, CO 81601
(970) 928-0401 Oflice
(970) 928-0406 FAX
e:
Gary Evans
Retail kader
KN Energy
OO96 COUNTY ROAD 160
GLENWOOD SPRINGS CO 81601
Jan-l 9-99 08:55 Frorn-USIIEST FIELD El,lC GJI
ASPEN GLEN GOLFCO I-I9'99
LAN HAT]SE
ee29 HWY 82
CARBONDALE,CO 81523
970-963-62t17
RE: COR\IELL R^NCH I.LC PROJECT
SNCERELY
/.//
g?02414349 T-r r2 P.0ll01 F-I87
r|f:ryEsr"- ---CAttUUntCaIrONS @
TJS WEST COMMIJNICATIONS WILL PROVIDE TELEPHOM SERVICE' TO THE ABOVE-
TVGNTIONED pROJECT. AS REQUTRED BY TARII'^CS, FILED Iluougb THE COLOF-{'DO PTJBLIC
UTlLlfi COMivllSSiON
tF YOU l4vE ANY QUESfioNS PLEAS CALL
I -a?{L?a4JlOR
OARY GIESON
MANAGER
Sent By: TCL Cable; 9709450270; Jan-26'99 1:51PM; Page 1/1
We talcing fercvi.rrbo
ioio tomorrow,
_N TCI Cablevision of Colorado, lnc.
January 26, 1999
lan Hause
Aspen Glen
9929hwy 82
Carbondale, CO
RE: Corycll Ranch LLC
Dear Mr. l{ause
TCI will prot'ide cable service to Corycll Ranch LLC, provided that there will be
a 4-ilch conduit placed fmm our amplifier locatcd at lot D-7 across thc river. This is the
oniy locaiion tirar we can get scrvicc irom to provirie the Corycll Ranch wil.h cable. If you
havc any qucstions please call me at 970-945-729?.
Sinccrcly yollrs, /t7J.ur{ryft
David M. Phillips Jr.
Corstructiort Coordirrutor
1 605 Grrnd AY€f,u€
Glenvood Sortaga Coloreoa 8t6ot
(3O3i 9..5-7202
F,\X (S03, 943-O2r'J
Aa Ecuet apg.y|{Jatv Ewqtfc,
RoenrNc Fom Werpn & SaxtrATIoN Drsrmcr
9929 Hrcnwnv 82 a CansoxoeLr, CoLoReoo 81623
PuoNE (970)963-6277 t Fax (970) 963-4538
March 31. 1999
Mailed To:
Mark Bean. Director
Garfield County Planning Department
109 8d Street
Glenwood Springs. Colorado 81601
Re: Coryell Ranch
DearMark
Tlfs letter will confirm that the Roanng Fork Water & Sanitatjon Distnct can and will provide server and
water service to the proposed Coryell Ranch Development.
Please do not hesitate to contact me if you have any firther questions regarding the District's commitment
Very Truly Yours.
ROARING FORK WATER& SANITATION DISTzuCT
Don Parris
Jack Best
Larry Green
By
Cc:
Haus6. Distnct Administrator
ROARING FORK WATER & SANITATION DISTRICT
CORYELL RANCH COMPAI\IY,, LLC
PRE.INCLUSION AGREEMENT
THIS PRE-INCLUSION AGREEMENT is made and entered into this
-
day of
February, 1999 by and between the ROARING FORK WATER & SANITATION DISTRICT
(formerly the "Aspen Glen Water & Sanitation District"), a Colorado special district, whose
address is9929 Highway 82, Carbondale, Colorado 81623 ("District"), CORYELL RANCH
COMPANY,LLC whose address is 400 Main Street, Hilton Head Island, South Carolina 29926
("Coryell Ranch") and the BOARD OF COLTNTY COMMISSIONERS FOR GARFIELD
COLINTY, COLORADO ("County").
WITNESSETH
WHEREAS, the Distnct is a special district, formed and functioning under authority of
C.R.S. $$ 32-1-101 et. seq. (West Supp. 1998) and the District's "service Plan" ordered and
decreed by the Garfield County District Court in Case No. 94CV29, providing water and sewer
service in Garfield County, Colorado; and
WHEREAS, Coryell Ranch is the owner and developer of that real property located in
Garfield County, Colorado, more particularly described in Exhibit A attached hereto and
incorporated herein by this reference ("Coryell Ranch Property"), which real property Coryell
Ranch desires to have included within the District's boundaries in order to receive sewer service
from the District; and
WHEREAS, the Coryell Ranch Property has been deemed under the District's Service
Plan to constitute, "[r]eal property capable of being served by the facilities of the District..." as
that phase is used in C.R.S. $ 32-1-401, for purposes of the inclusion of real property within a
special district; and
WHEREAS, as provided by the OUT-OF-DISTRICT SEWER SERVICE AGREEMENT
("Out-of-District Contract") executed by the District and the prior owner of the Coryell Ranch
Property, the District is obligated to provide sewer service to the Coryell Ranch Property upon
the terms and conditions contained in such Out-of-District Contract; and
WHEREAS, under the Annexation Policy set forth within the District's Service Plan and
the provisions of the Out-of-District Contract Coryell Ranch may, in lieu of receiving District
sewer service under the terms of the Out-of-District Contract, petition to have the Coryell Ranch
Property included within the boundaries of the District pursuant to C.R.S. $ 32-1-401 et. seq. and
WHEREAS, Coryell Ranch has caused an Application for combined Planned Unit
Development and Preliminary Plan approval for the Coryell Ranch PUD to be submitted to
Garfield County. It is presently estimated that at full build-out, the Coryell Ranch PUD will
require sewer service from the District in the total amount of 74 EQR's, with one EQR
representing 300 gallons per day (gpd) calculated in accordance with the District's Service Plan;
and
WHEREAS, C.R.S. $ 32-1-401 et. seq. and the District's Service Plan provide
requirements and procedures for the annexation and inclusion of property into the District, and
specifically, C.R.S. 5 32-l-402(1Xc) provides that agreements may be entered into, "[b]etween a
board and the owners of property sought to be included in a special district with respect to fees,
charges, terms and conditions on which such property may be included."; and
WHEREAS, C.R.S. $$ 31-1-1001(1Xd) and 31-35-402(1Xf) authorize the District to
require reimbursement of its out-of-pocket costs in providing services to the District's customers,
including but not limited to, sewer connections, inclusions to the District and planning and
review of line extensions; and
WHEREAS, the District and Coryell Ranch desire to set forth the provisions pursuant to
which the Coryell Ranch Property will be included within District's boundaries and pursuant to
which sewer service will thereafter by provided to the Coryell Ranch Property by the District.
NOW THEREFORE, for and in consideration of the mutual covenants and promises of
the parties, and other good and valuable consideration, the adequacy and sufficiency of which is
hereby acknowledged and confessed, the District and Coryell Ranch, on behalf of themselves,
their successors, assigns, heirs, devisees and/or transferees, agree as follows:
Section I.
Inclusioni Exclusion of Coryell Ranch Property
1. Inclusion of Coryell Ranch Property within District. No later than two (2) years from the
date of the execution of this Agreement, Coryell Ranch shall file with the District
pursuant to C.R.S. $ 32-1-401, a petition to have the Coryell Ranch Property included
within the boundaries of the District. For the purpose of interpreting this provision,
Coryell Ranch and the District agree that the Coryell Ranch Property shall be included
within the District pursuant to a single filing with District-- it being the expressed intent
of the parties that the Coryell Ranch Property be included within the District in its
entirety in a single proceeding, as opposed to multiple proceedings addressed to portions
or phases thereof. Upon the District's receipt of such petition for inclusion, the District
shall perform all necessary steps required thereunder to include the Coryell Ranch
Property within the District, including, but not limited to, the holding of the necessary
public meetings as required by statute, and, if the Petition is granted, obtaining an Order
Pre-inclusion Agreement
Roaring Fork Water & Sanitation District/Coryell Ranch Company, LLC/Board of County Commissioners
Page 2
2.
of inclusion from the Garfield County District Court and filing and recording said Order
with the Garfield County Clerk and Recorder, the Garfield County Assessor and the
Division of Local Government.
Reimbursement of District Costs. Coryell Ranch shall reimburse the District all actual
costs incurred by the District relating to the inclusion of the Coryell Ranch Property
within the District including all engineering, legal, inspection, filing or recording fees and
related expenses, on receipt of itemized billings for those services from the District. All
such amounts shall be due within thirty (30) days of the date of the bill, with interest on
any overdue amounts to be assessed at one percent (l%) per month. In the event the
District is forced to pursue collection of any amounts due and unpaid under this
provision, it shall be entitled to collect attorney fees, filing and lien recording fees
incurred in such collection efforts in addition to the unpaid amounts due, plus interest.
Provision of Water Service. Under the terms and conditions of the District's Service Plan
as presently approved, the District may not provide domestic water service to properties
outside its initial boundaries (i.e., the Aspen Glen PUD), either through annexation or
contract, without first obtaining approval for a modification of its Service Plan. The
District therefore finds that under the terms of its existing Service Plan it is infeasible and
impracticable, and contrary to the good of the entire district, to extend the District's water
lines and facilities to the Coryell Ranch Property for the purpose of providing domestic
water service thereto, or to assume any management or administrative duties or
responsibilities relating to the provision of domestic water service to the Coryell Ranch
Property. In accordance with the above, and pursuant to C.R.S. $ 32-1-1006 (1)(b)(I), the
District hereby designates the Coryell Ranch Property as a sewer-only area of service.
The designation of the Coryell Ranch Property as a sewer-only area of service shall
remain in effect until such time as the District, acting within it jurisdiction and authority
as provided by law, finds by resolution that it would be feasible and for the good of the
entire District to extend its water lines to the Coryell Ranch Property for the purpose of
providing domestic water service thereto. The parties acknowledge and agree that the
District may not make such finding until and unless (i) the District and Coryell Ranch
enter into a separate agreement for the provision of domestic water service to the Coryell
Ranch Property upon terms and conditions acceptable to the District; and (ii) the District
obtains the necessary approval of a modification to its Service Plan to allow the extension
of water lines to the Coryell Ranch Property and the provision of domestic water service
thereto.
District Charges. Upon being annexed within the District and pursuant to C.R.S. $ 32-1-
a02(l)(c), the Coryell Ranch Property shall be, subject to the following limitations, liable
for its proportionate share of the taxes and charges to be assessed by the District:
Pre-inclus ion Agreement
Roaring Fork Water & Sanitation District/Coryell Ranch Company, LLC/Board of County Commissioners
Page 3
3.
4.
consistent with the District's designation of the Coryell Ranch Property under
Paragraph 3. of this Section, and until such time as such designation may be
revised, all such taxes, rates, tolls and./or charges assessed against the Coryell
Ranch Property shall be determined in accordance with the amount of charges and
costs incurred by the District relating solely to the provision by the District of
sewer service to the Coryell Ranch Property; and
any and all service billings or charges as the same are defined under the District's
Service Plan and Rules and Regulations, shall be charged against the Coryell
Ranch Property on a lot by lot basis solely, following the delivery thereto of
District sewer service. Nothing in this subparagraph shalt be construed to prohibit
the District from assessing stand-by charges to lots within the Coryell Ranch
Property so long as the District's sewer lines have been extended to the Coryell
Ranch Property and the District assesses stand-by charges to all property within
its boundaries.
5. Exclusion of Coryell Ranch Property. In the event Coryell Ranch and/or the District are
unable to satisff the conditions set forth within this Agreement and/or are otherwise
unable to satisfactorily perform thereunder, Rose Ranch shall, pursuant to C.R.S. $ 32-1-
501(1), file with the District a petition to have the Coryell Ranch Property excluded from
the District. Upon receipt of such petition by Coryell Ranch, the District shall pursuant to
C.R.S. 5 32-l-502(4), exclude the Coryell Ranch Property from within the District and
this Agreement shall terminate without further action being required of the parties. The
provision thereafter by the District of sanitary sewer service to the Coryell Ranch Property
shall be governed exclusively under the terms and provisions of the Out-of-District
Service Contract incorporated within the Service Plan as Exhibit L.
Section II.
Acquisition of Treatment Plant Capacity
Coryell Ranch has made arrangements to acquire 72 EQR's of Treatment Plant Capacity
from excess capacity previously allocated to Aspen Glen Golf Company, under the terms and
conditions contained in that certain Agreement to Acquire Plant Capacity of even date herewith
between Aspen Glen Golf Company and Coryell Ranch. Under that Agreement, the District shall
charge a sewer tap fee of no less than $3,900.00 per EQR to owners of property within Coryell
Ranch PUD. The District shall retain said tap fees in a separate capital improvements account,
along with tap fees retained by the District under that certain Amendment to Construction and
Reimbursement Agreement dated August 17,1998 between the District, Aspen Glen and Garfield
County, until such time as the District has received and retained adequate funds from Coryell
Ranch and Aspen Glen to completely fund the cost of an expansion of its treatment plant in the
amount of 107,000 gallons per day.
Pre-inclusion Agreement
Roaring Fork l(ater & Sanitation District/Coryell Ranch Company, LLC/Board of County Commissioners
Page 4
A.
B.
1.
2.
Section III.
Connection to District Facilities
Procedure for Connection to District Facilities. Upon providing written notice to the
District and satisffing all required provisions of this Agreement, Coryell Ranch shall be
allowed to connect the Coryell Ranch Property to the District's Treatment Plant and
receive wastewater treatment service from the District.
Costs. Coryell Ranch shall pay all infrastructure costs for connection to the District's
sewer system and Treatment Plant, including, but not limited to, the costs of intemal
collection lines, necessary external joint trunk or interceptor lines, outfall lines, lift
stations, other appurtenant collection facilities, and its own administrative costs. In the
event Coryell Ranch oversizes any lines, lift stations or other facilities in connecting the
Coryell Ranch Property to District facilities, it shall be entitled to recoup the oversizing
costs from those owners and customers benefitted by such oversizing. For this purpose,
Coryell Ranch and the District shall execute an appropriate reimbursement agreement
incorporating terms no less favorable to Coryell Ranch than the terms contained in the
Construction and Reimbursement Agreement executed by the District and Aspen Glen
Golf Partners and incorporated within the Service Plan as Exhibit J.
Plans and Specifications. All sewer lines and facilities on the Coryell Ranch Property
shall be constructed and installed in accordance with the District's Rules and Regulations
in effect from time to time and all applicable terms, conditions, restrictions and schedules
set forth in the subdivision approvals issued by the County for the Coryell Ranch Property.
Upon completion of the final engineering and design plans for the facilities to be
constructed on the Coryell Ranch Property, Coryell Ranch shall forward these plans to the
District Engineer, who shall approve or disapprove the plans within thirty (30) days of
receipt, and whose approval shall not be unreasonably withheld. In the event the District
Engineer disapproves of such plans, he shall provide written notice to Coryell Ranch
describing with specificity the reasons for his disapproval and the changes necessary to
make the plans and specifications acceptable to the District. In the event the District and
Coryell Ranch are unable to reach agreement on the required plans and specifications, the
parties hereby agree to approach the District Board of Directors for resolution. Upon
approval, the District and Coryell Ranch shall execute in duplicate a document clearly
specifying the approved plans and specifications to provide both parties certainty as to the
agreed upon plans and specifications.
Change Orders. To facilitate completion of the facilities on the Coryell Ranch Property in
accordance with the rules and regulations of the District, Coryell Ranch, its' contractors
and agents may propose reasonable change orders, of which Coryell Ranch shall provide
the District with notice and copy of the same. Within three (3) days, or such lesser period
as may be required under the circumstances of receiving notice and a copy of the proposed
Pre-inclusion Agreement
Roaring Fork llater & Sanitation District/Coryell Ranch Company, LLC/Board of Coun;ty Commissioners
Page 5
J.
4.
5.
6.
change order(s), the District shall either approve the same or propose an alternative(s)
which will not result in unreasonable delay. If the District fails to approve the change
order or suggest an alternative within three (3) days, Coryell Ranch may proceed with the
change. All approved change orders, including any change order deemed approved, shall
be incorporated into and become part of the agreed upon plans and specifications.
Inspections. The District shall have the right to inspect all facilities and work on the
Coryell Ranch Property prior to the dedication of such facilities to ensure compliance with
the agreed upon plans and specifications. Coryell Ranch shall reimburse the District for
the reasonable actual costs of such inspections.
Warranty. Coryell Ranch shall warrant all facilities conveyed to the District for a period
of two (2) years from the date that Coryell Ranch's Engineer certifies in writing that the
facilities have been constructed and installed in compliance with the agreed upon plans
and specifications, and any duly deemed or approved change orders, which date shall also
be known as the certification date. Specifically, Coryell Ranch shall wa:rant that any and
all facilities conveyed to the District shall be free of any defects in materials or
workmanship for a time period of two (2) years.
Within ten (10) days of the certification date,
Coryell Ranch shall dedicate and convey to the District by appropriate instruments of
conveyance those portions of the facilities certified by Coryell Ranch's Engineer pursuant
to Paragraph 6 of this Section. The District shall accept such dedication within thirty (30)
days thereof, and thereafter title to any facilities so dedicated and conveyed shall be vested
in the District. Coryell Ranch shall provide the District with lien waivers from all
contractors, subcontractors, an material suppliers for work and materials fumished in
connection with the facilities conveyed.
8. Conveyance of Easements. Coryell Ranch shall by special warranty deed convey to the
District nonexclusive easements necessary for the District to maintain, operate, repair, and
replace the facilities located on the Coryell Ranch Property and dedicated to the District ,
free and clear of all liens, encumbrances, and title defects which could defect the District's
title, and any title defects which would affect the District's ability to use each easement for
its intended purpose. Coryell Ranch shall and hereby does reserve the right to use in
common with the District any easements it conveys to the District for ingress and egress
and for all utility purposes not inconsistent with the District's use. The District shall
notify Coryell Ranch of its plan to excavate any easements on the Coryell Ranch Property,
and shall make all reasonable efforts to minimize disturbance to the owner(s) and the
user(s) thereof. A11 easements conveyed or established pursuant to this paragraph shall be
and hereby are subject to the obligation of the District to repair and revegetate disturbed
areas to a condition and grade substantially similar to that which existed before the
disturbance.
Pre-inclusion Agreement
Roaring Fork Ll/ater & Sqnitation District/Coryell Ranch Company, LLC/Board of County Commissioners
Page 6
7.
9.Control of Facilities. Once conveyed to the District, and subject to the warranty
provisions of Paragraph 6 of this Section, the District shall be solely responsible for
operation, maintenance, repair, and replacement of all facilities located upon the Coryell
Ranch Property which are dedicated to the District. The District shall at all times operate
the district facilities in an economical manner, and shall make repairs and replacements to
assure continuous operation.
Release of Security. Completion of construction of all facilities required to be constructed
on the Coryell Ranch Property under this Section shall be secured under the applicable
Subdivision Improvements Agreements to be executed by Coryell Ranch with the County
instant to the final platting of the Coryell Ranch Property. Prior to the release of said
security by the County, Coryell Ranch shall provide satisfactory evidence to the County
that the dedications and conveyances required under Paragraphs 7 and 8 of this Section
have been made to the District.
Section IV.
Payment of Tap Fees and Common Element Surcharge
Transfer of Tap Riehts. The right to receive one EQR of sanitary sewer service and
wastewater treatment capacity from the District's facilities shall be known as a "Tap
Right". By virtue of the Amendment to Construction and Reimbursement Agreement
dated August 17 , lggS Aspen Glen has been allocated 356 EQR's of sewer service, or Tap
Rights, which will arise from the Phase II wastewater treatment plant expansion. Pursuant
to agreement, Aspen Glen has assigned 72 such Tap Rights to Coryell Ranch and directed
that the District shall charge and retain a sewer tap fee of no less than $3,900.00 per EQR
to owners of property within Coryell Ranch PUD, as more particularly provided in Section
II hereof.
Tap Riehts Appurtenant to Coryell Ranch Property. All of the Tap Rights assigned to
Coryell Ranch as provided in Paragraph I of this Section, shall be deemed appurtenant to
the Coryell Ranch Property and as such, shall not be assigned, transferred or conveyed by
the District or Coryell Ranch to secure or provide District sanitary sewer service to other
properties located outside the Coryell Ranch Property without the prior written consent of
the County, the District and Coryell Ranch.
Determination of Tap Fees. The Tap Fee to be charged by the District for each Tap Right
within Coryell Ranch shall be equal to the sum of:
A. $3,900.00, which will be retained by the District as provided in Section II hereof;
plus
Pre-inclus ion Agreement
Roaring Fork Water & Sanitation District/Coryell Ranch Company, LLC/Board of County Commissioners
Page 7
10.
1.
2.
B.If Coryell Ranch so elects, an amount to be established from time to time by
Coryell Ranch, in its sole discretion, which shall be based upon the actual costs
incurred or reasonably estimated to be incurred by Coryell Ranch under Section III
of this Agreement, prorated on a per EQR basis, plus interest, which amount may
thereafter be reimbursed to Coryell Ranch, quarterly, after actual payment thereof
to the District by owners of property within Coryell Ranch. Coryell Ranch shall
initially establish this amount prior to the sale of any lots within the Coryell Ranch
Property and shall provide notice of the amount thereof to the District; thereafter,
Coryell Ranch shall be entitled to adjust the same no more than one time annually
and shall provide written notice of such modif,red amount to the District no less
than twenty (20) days prior to the date any such change is to be implemented by
the District; plus
An amount ("Capital Reserve") to be established, retained, and utilized by the
District at its sole discretion which shall be:
C.
based upon the estimated required future capital repair/replacement costs to
be incurred by the District instant to the continued operation of the
Treatment Plant and sewer facilities; and
applied uniformly against all Tap Rights issued to properties within the
District's boundaries or service area, subject to the right of the District to
adjust the Capital Reserve element based upon the number or size of lift
stations, if any, necessary to serve any particular property.
4. Palrment of Common Element Surcharge The Common Element Surcharge represents a
per EQR charge for the oversizing of facilities previously constructed within the
Treatment Plant and benefitting properties located outside the Aspen Glen Planned Unit
Development. The parties hereby agree that the Common Element Surcharge which
benefits the number of tap rights to be acquired by Coryell Ranch under this Agreement is
$75,775.00. Coryell Ranch agrees that it shall pay to the District the sum of $75,775'00
in full satisfaction of its obligation to pay the Common Element Surcharge in one (1)
payment prior to the date that Coryell Ranch is allowed to make any physical connection
from any of the Coryell Ranch PUD to the District's wastewater treatment Plant. It is the
express intent of the parties that none of the Coryell Ranch PUD shall be entitled to
physically connect to the District's facilities or receive wastewater treatment service
therefrom until Coryell Ranch pays the District the Common Element Surcharge as
provided in this paragraph
Pre-inclusion Agreement
Roaring Fork Water & Sanitation District/Coryell Ranch Company, LLC/Board of County Commissioners
Page 8
1.
2.
1.
Section V.
Conditions to District Service
District Service Conditions. The District's obligations to provide sewer service to the
Coryell Ranch Property shall be expressly conditioned upon the satisfaction of the
following:
B.
inclusion of the Coryell Ranch Property within the District pursuant to the
provisions ofsection I, Paragraph 1.; and
receipt by Coryell Ranch of all applicable County subdivision approvals for the
lots or properties within the Coryell Ranch Property requesting District sewer
service; and
receipt and retention by the District pursuant to Section II, of tap fees; andC.
D. satisfactory performance by Coryell Ranch of the requirements and conditions to
Connection to District Facilities set forth in Section III; and
E. Receipt by the District of the Common Element Surcharge as provided in Section
IV; and
F. receipt by the District of all amounts required to be paid by Coryell Ranch under
this Agreement; and
G. Satisfaction by Coryell Ranch of any other term and condition required of it under
this Agreement.
2. Oblieation to Provide Service. Upon satisfaction of the foregoing conditions, the District
shall be obligated to provided sanitary sewer service to the Coryell Ranch Property as the
demand for the same arises for the number of EQR's represented by the Tap Rights
assigned to Coryell Ranch under the provisions of Section IV, without further payment to
the District of any system improvement fees charged by the District which are attributable
to Treatment Plant expansion or systems enlargement.
Section VI.
Dispute Resolution
In the event the parties are unable to agree upon any matter addressed within this
Agreement, each party shall select an engineer to represent its interests. The selected engineers
shall then appoint one engineer, who shall provide a determination upon the matter in dispute. In
the event this process of settlement fails, the parties agree to resolve such dispute by arbitration in
Pre-inclusion Agreement
Roaring Fork Water & Sanitation District/Coryell Ranch Company, LLC/Board of County Commissioners
Page 9
accordance with the rules and regulations of the American Arbitration Association then in effect.
The determination of the arbitrator shall be final and conclusive and judgment may be entered
upon it in accordance with applicable law in any court having jurisdiction thereof.
Section VII.
Compliance with Rules and Regulations/Non-discrimination
Upon inclusion of the Coryell Ranch Property within the District and subject only to the
terms and provisions of this Agreement, Coryell Ranch and the owners or customers within the
Coryell Ranch Property shall be bound by and comply with the District Rules and Regulations
applicable to properties within the District as the same may be amended from time to time.
Section VIII.
Audits, Reports and Inspections
The District shall maintain the records, accounts, and audits required by statute or which
would be kept under normal business practice, and copies of such records shall be provided to
Coryell Ranch upon request. Each party shall keep full and accurate records of all Construction
Costs and related costs, which shall be made available upon request. The District shall have the
right to inspect the facilities located upon the Coryell Ranch Property as provided in the District's
Rules and Regulations, and Coryell Ranch shall, upon notice to the District, have the right to
inspect the District's wastewater treatment plant, sewer lines, lift stations, and other appurtenant
facilities.
Section IX.
County Obligations
The County's duties and obligations under this Agreement are and shall be limited to those
duties and obligations set forth in Section II, Section III, Paragraph 10 and Section IV, Paragraph
2.
Section X.
General Provisions
Termination. This Agreement shall be in full force and effect until terminated by mutual
agreement by the parties hereto, or as provided by law.
Good Faith. Because of the need for a regional wastewater treatment facility, the parties
agree to proceed in good faith with the implementation of this Agreement. The parties
further agree to negotiate in good faith for future financing and construction of additional
Common Elements, wastewater treatment plant capacity, and any other facilities.
P r e - in c lu s ion A gr e ement
Roaring Fork Water & Sanitation District/Coryell Ranch Company, LLC/Boarcl of County Commissioners
Page l0
1.
2.
J.
4.
Service Plan Integration. This Agreement and its Exhibits shall be incorporated in the
District's Service Plan, as though set forth there verbatim.
Compliance with State and Federal Law. This Agreement shall not be construed to be in
violation with the laws of the United States or the State of Colorado, nor in any manner
which adversely affects or diminishes the financing capabilities of the District.
Enforcement: Specific Performance. In the event of any material failure by either party
hereto to comply with the terms of this Agreement, the other party shall have standing to
bring suit at law or in equity to enforce compliance herewith. It is expressly agreed that
any default in the provisions hereof may be specifically enforced. This Agreement shall
be construed in accordance with the laws of the State of Colorado, including the Special
District Act, C.R.S. $$ 32-1-101, et. seq.
Non-Merger. Each party's obligations under this Agreement shall be assignable to any
grantee, purchaser, transferee, or assignee ofthe party's interest, and shall survive any
such conveyance, purchase, transfer, or assignment.
Covenants: Recording. The provisions of this Agreement shall constitute covenants
running with the lands affected thereby, and upon execution this Agreement shall be
recorded in the records of the Garfield County Clerk and Recorder and shall thereafter
constitute actual notice of the terms and conditions hereof to any and all future users of
District services on the Coryell Ranch Property, and all owners, tenants or other persons
who occupy units or reside upon the Coryell Ranch Property.
Attorneys' Fees. Each party shall bear its own attorneys' fees incurred in the negotiation,
execution, and implementation of this Agreement. However, in the event arbitration or
litigation is necessary to enforce the rights of the parties to this Agreement, as between
themselves, the prevailing party in such arbitration or litigation shall be entitled to
reasonable attorneys' fees and costs actually incurred.
Qomplete Agreement: Amendment. This Agreement constitutes the entire and complete
agreement between the parties, and any modification or amendment hereto shall be
evidenced by a writing signed by the parties.
Bindine Effect. This Agreement shall be binding upon and inure to the benefit of the
parties, their heirs, successors, grantees, and assigns. Nothing herein shall prevent Coryell
Ranch from selling its property and the benefits and obligations of this Agreement shall be
appurtenant to the property conveyed.
Pre-inclusion Agreement
Roaring Fork Water & Sanitation District/Coryell Ranch Company, LLC/Board of County Commissioners
Page I I
5.
6.
7.
8.
9.
10.
11.Authority. Each person executing this Agreement represents and warrants that he has been
duly authori zedby the party which he purports to represent to execute this Agreement, and
has authority to bind said party to the terms and conditions of this Agreement.
No Waiver. No provision of this Agreement may be waived except by an agreement in
writing signed by the waiving party. A waiver of any term or provision shall not be
construed as a waiver of any other term or provision.
Headings. The paragraph headings in this Agreement shall not be used in the construction
or interpretation hereof, as they have no substantive effect, and are for convenience only.
Severability. If any part or section of this Agreement shall be found void or invalid by a
court of competent jurisdiction, such finding shall not affect any remaining part or section,
and said remaining parts or sections shall continue in full force and effect. The parties
shall renegotiate in good faith any matter addressed by apart or section that is found void
or invalid.
Notice. All notices required under this Agreement shall be in writing and shall be hand
delivered or sent by registered or certified mail, return receipt requested, postage prepaid,
to the addresses of the parties herein set forth. Al1 notices so given shall be considered
effective seventy-two (72) hours after deposit postage paid in the United States Mail with
the proper address as set forth below. Either party by notice so given may change the
address to which future notices shall be sent.
t2.
13.
14.
15.
Notice to:
With copy to:
Notice to:
Notice to:
Roaring Fork Water and Sanitation District
9929 Highway 82
Carbondale, Colorado 81623
Lawrence R. Green
Balcomb & Green P.C.
P.O. Drawer 790
Glenwood Springs, CO 81602
Coryell Ranch Company, LLC
Attn: Donald L. Pa:ris
9929 State Highway 82
Carbondale, CO 81623
Garfield County Department of Building and Planning
Attn: Mark Bean
109 8th Street, Suite 303
Glenwood Springs, CO 81601
P r e-inclusion Agr eement
Roaring Fork Ll/ater & Sanitation District/Coryell Ranch Company, LLC/Board of County Commissioners
Page l2
IN WITNESS WHEREOF, the parties have executed this Agreement in multiple originals
on the day and year first written above.
CORYELL RANCH COMPANY, LLC,
a Colorado limited liability company
By: Coryell Ranch Management Company, Inc.,
a South Carolina corporation
By:
ROARING FORK WATER AND SANITATION
DISTzuCT
President
ATTEST:
By
Secretary
BOARD OF COLTNTY COMMISSIONERS,
GARFIELD COLINTY, COLORADO
By
Chairman
ATTEST:
By
Clerk
c:\wp-docs\Lc\Coryell Rmch\D@ummb\ . 102
Pre-inclusion Agreement
Roaring Fork Water & Sanitation District/Coryell Ranch Company, LLC/Board of County Commissioners
Page lj
By
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1,.r'
; ; a .,;r1,..!t,",:'
CORYELL RANCH ADJOINING LOT OWNERS
AG.
Lot
#
Adjoining Lot Owners Physical Address
DI 2393-29r-01-044 Hodge Capitol Company
250 Camino Alto, Hill Valley,CA9494l
369 Sopris Vista
D2 2393-29t-01-045 Hodge Capitol Company
250 Camino AIto, Hill Valley,CA9494l
361 Sopris Vista
D3 2393-291-0t-046 Thorsen, John Phillips & Connie P. (JT)
8600 NW South River Drive, Miami, FL33166-7434
No Address
D4 2393-29t-01-047 Trujillo, Dee
340 Isla Dorado Blvd., Coral Gable, FL 33143
36 Roaring Fork Ave.
D5 2393-291-01-048 Lowenberg, John D. & Rosemary R.
3010 Habersham Rd., NW, Atlanta, GA 30305
80 Roaring Fork Ave.
D6 2393-291-01-049 Lowenberg, John D. & Rosemary R.
3010 Habersham Rd.,I.{W, Atlanta GA 30305
80 Roaring Fork Ave.
D7 2393-29t-01-050 Burns, Larry, D.O. [nc., Profit Sharing Trust & Burn:
Larry, D.O. Inc. Money
2453 Wilcox Drive, Norman, OK73069-3956
,84 Roaring Fork Ave.
A1 2393-291-01-001 Tucker, James H. & Karen T. (JT)
3214 An&ews Ct, NW, Atlanta, GA 30305
284 Rivers Bend
A2 2393-29r-0r-002 Bums, Larry, D.O. lnc., Profit Sharing Trust & Burnr
Larry, D.O. Inc. Money
2453 Wilcox Drive, Norman, OK 73069-3956
,298 fuvers Bend
A3 2393-291-01-003 Smith, Robert L.
212 Kokopelli Ct., Henderson, NV 89014-1994
318 Rivers Bend
A4 2393-29t-01-004 Spraker, Richard L. & Nancy N. Trustees of the
Spraker Family Trust
620 New Port, Ste 12000, Newport Beach, CA
92660
340 Rivers Bend
A5 2393-291-01-00s Krisujen Realty L.P.
405 N. State Rt. 17, Paramus, NJ 07652-2900
303 Rivers Bend
A6 2393-291-01-006 Krisujen Realtv L.P.
405 N. State Rt. 17, Paramus, NJ 07652-2900
303 Rivers Bend
A7 2393-291-01-007 Krisujen Realtv L.P.
405 N. State Rt. 17, Paramus, NJ 07652-2900
303 Rivers Bend
A8 2393-291-01-008 Krisujen Realty L.P.
405 N. State Rt. 17, Paramus, NJ 07652-2900
303 Rivers Bend
Al5 2393-29r-01-015 Bailey, James & Judith Ann
39 Barringer Rd., Darien, CT 06820-2012
156 Rivers Bend
2393-292-00-2rl Hobby, Dan R.
4990 Counry Road 109, Carbondale, CO 81623
4990 County Rd
109
2393-292-00-210 Hofer, Charles J. & Sheila K.
13340 N. 94th Dr., Peori4 M.853814824
4988 County Rd-
109
2393-292-00-022 Crystal River Ranch Company
555 lfl St., Ste 2400,Denver, CO 80202-3941
2393-283-00-021 Snobble, Barbara M.
5970 Counry Rd 109, Carbondale, CO 81623'2321
5970 C.R. 109
2393-283-00-019 Badey, James Jeffrey & Conne Mara
5966 County Rd 109, Carbondale, CO 81623'2321
5966 C.R. 109 -
2393-283-00-020 Snobble, Barbara M.
5970 Countv Rd 109, Carbondale, CO 81623'2321
5970 C.R. 109
2393-332-00-026 Wilson, Beulah H., Family CompanY
6235 County Rd., 109, Carbonrlale, CO 81623'2321
6235 C.R. 109
2393-283-00-017 Tomcat Ranch LLC
P O Box i298, Saint John, VI 00831-1298
2393-282-00-006 Kennedy, MichaelP. & Julie A.
P O Box 1383, Carbondale, Colorado 81623
2393-282-00-010 McCarney, Mary
3984 N. 486 Lane, Paoniq CO 81428
541 County Rd.l06
2393-291-00-376 Nichols, Peter D.
P O Box 1051, Carbondale, CO 81623-1051