HomeMy WebLinkAboutLAURIE SUBDIVISION PUD - PRELIMINARY - 44-89D - CORRESPONDENCE - CITIZEN COMMUNICATION (2)•
•
APPLEWOOD WATER ASSOCIATION, INC.
and
APPLEWOOD HOMEOWNERS' ASSOCIATION
P.O. Box 8292
Fort Collins, Colorado 80526
(303) 482-2125
.August 8, 1991
Matthew Price
Jack Johnson Co.
1910 Prospector Ave., Suite 200
Park City, UT 84060
Re: Laurie Subdivision
Fort Collins, Colorado
Dear Mr. Price:
Recently you contacted me regarding the Applewood irrigation ditch,
which crosses the proposed Laurie Subdivision. This ditch supplies
water to the Applewood Estates subdivision as well as to other
irrigators.
Your company is doing the engineering and planning for Dr. William
Musselwhite, the developer. We have a copy of the Utilities Plan
you submitted to the City of Fort Collins Planning and Zoning Board
for preliminary approval at its meeting on August 26th. We also
have a copy of your Revised Drainage and Erosion Report in which
the ditch is discussed.
The Utility Plan and Drainage Report proposes replacing our ditch
with a 12 foot irrigation ditch (sic) easement and an 18 inch
underground pipe. No other details are given.
We are not opposed in principal to a pipeline. Sections of our
system in the Clarendon Hills and Orchards subdivisions were placed
underground during development, and we understand the desire of Dr.
Musselwhite to eliminate the ditch. However, we are very concerned
about the location, design and installation of the pipeline and its
compatibility with the rest of our system, which we expect will be
completely underground at some point.
In the past the H&S Irrigation company in Greeley designed and
installed our underground pipeline. During our conversation I
suggested having H&S involved in the design of the Laurie pipeline.
You ignored my suggestion, requesting only the flow rate of the
ditch.
However, there are many factors other than flow rate to take into
account. While we cannot stop Dr. Musselwhite from submitting
plans without our input, we will not approve any plans for a
pipeline until our consultant approves its location, design and
installation. We would expect Dr. Musselwhite to pay the
consulting fees.
Moreover, we wish to make it clear that if Dr. Musselwhite attempts
to obtain City approval for a pipeline without our agreement, we
will take whatever legal action is necessary to prevent elimination
of our ditch. This ditch is fully protected by an easement which
has been in existence for over one hundred years.
You should also be aware that Applewood is not the only irrigator
involved. There are several individuals to the east of the
Orchards subdivision whose approval must be sought.
Based on our previous experience we expect one objection to the
plans submitted so far will be the width of the proposed easement.
We will probably require a 20 foot easement, which is consistent
with our pipeline easements elsewhere. We wish to point out,
however, that we will not approve parts of a plan on a piecemeal
basis. All of the details of the pipeline must be negotiated as
a package before we approve any plans, preliminary or final.
Finally, your Drainage Report is inaccurate in stating that " [fI low
rates provided by the Applewood Estates Irrigation Company (sic)
indicated a maximum flow rate of 2.5 cfs." I was the only
Applewood representative you talked to, and I was unable to give
you any flow rates. What I told you was that I thought our main
underground pipe was 18 inches in diameter but that I would have
to verify it. Our consultant will be able to provide that
information.
We strongly urge you to contact us now before you face further
delays.
Sincerely,
I
Y-�
Mark W. Schultheiss
President, Applewood
Water Association, Inc.
cc: Board of Directors, Applewood Water Association, Inc.
Dr. William Musselwhite
Sherry Albertson -Clark
Robert Underhill, Orchard irrigator
Eldon Savage, Orchard irrigator
THE JACK JOHNSON COMPANY
HYDROLOGY
STUDY - LAURIE SUBDIVISION
RATIONAL
METHOD -
EXISTING CONDITIONS
- 2 YEAR STORM
Location
Point
Area
Runoff
Freq.Fac.
AxCxCf
Flow time Flow time
Rain Int.
Flow "Q"
(acres)
"C"
"Cf"
Tchannel Tc (min.)
"I"(in./hr.)
cfs
Offsite Area "A"
Pt."A"
10.50
0.2
1.0
2.10
15
2.1
4.41
Onsite Area 1
Culv.3
0.50
0.25
1.0
0.12
10
2.1
0.25
Total
11.00
0.2
1.0
2.20
15
2.1
4.62
Offsite Area "B"
Pt "B"
2.50
0.25
1.0
0.62
10
2.5
1.56
Onsite Area 2
Culv.2
0.60
0.30
1.0
0.18
10
2.5
0.45
Total
3.10
0.26
1.0
0.81
10
2.5
2.02
Offsite Area "C"
Pt."C"
4.50
0.25
1.0
1.12
10
2.5
2.81
Onsite Area 3
Culv.1
0.75
0.30
1.0
0.22
10
2.5
0.56
Total
5.25
0.26
1.0
1.36
10
2.5
3.41
ADD FOR IRRIGATION
OVERFLOW
30.0
Total
CulV.1
33.41
Onsite Area 5
1.40
0.30
1.0
0.42
10
2.5
1.05
Total Site Leaving
Ravine
9.75
0.26
1.0
2.53
12
2.5
6.32
ADD FOR IRRIGATION
OVERFLOW
30.00
TOTAL SITE + IRRIGATION OVERLOW LEAVING RAVINE
36.62
Onsite Area 4
Sheet Flow 1.85
0.30
1.0
0.55
10
2.5
1.39
Onsite Area 6
Sheet Flow 1.40
0.30
1.0
0.42
10
2.5
1.05
THE
JACK JOHNSON COMPANY
HYDROLOGY
STUDY - LAURIE SUBDIVISION
RATIONAL
METHOD -
EXISTING CONDITIONS
- 100 YEAR
STORM
Location
Point
Area
Runoff
Freq.Fac.
AxCxCf
Flow time Flow time
Rain Int.
Flow "Q"
(acres)
"C"
"Cf"
Tchannel Tc (min.)
"["(in./hr.) cfs
Offsite Area "A"
Pt."A"
10.50
0.2
1.25
2.62
15
6.0
15.72
Onsite Area 1
Culv.3
0.50
0.25
1.25
0.16
10
6.0
0.96
Total
11.00
0.2
1.25
2.75
15
6.0
16.50
Offsite Area "B"
Pt "B"
2.50
0.25
1.25
0.78
10
7.0
5.46
Onsite Area 2
Culv.2
0.60
0.30
1.25
0.22
10
7.0
1.54
Total
3.10
0.26
1.25
0.81
10
7.0
5.67
Offsite Area "C"
Pt."C"
4.50
0.25
1.25
1.41
10
7.0
9.87
Onsite Area 3
Culv.1
0.75
0.30
1.25
0.28
10
7.0
1.96
Total
5.25
0.26
1.25
1.71
10
7.0
11.97
ADD FOR IRRIGATION
OVERFLOW
30.00
Total
Culv.1
41.97
Onsite Area 5
1.40
0.30
1.25
0.52
10
7.0
3.64
Total Site Leaving
Ravine
9.75
0.26
1.25
3.17
12
7.0
22.19
ADD FOR IRRIGATION
OVERFLOW
30.00
TOTAL SITE + IRRIGATION OVERLOW LEAVING RAVINE
52.19
Onsite Area 4
Sheet
Flow 1.85
0.30
1.25
0.69
10
7.0
4.85
Onsite Area 6
Sheet
Flow 1.40
0.30
1.25
0.52
10
7.0
1.05
COMMENTS
EXISTING CONDITIONS
West side of Shields
Thru CULV. #2 Under the private drive
Thru CULV. #1 Under the private drive
Add 30 cfs for irrigation overflow
Thru CULV. #1 Under the private drive •
Total flow exiting at ravine
Add 30 cfs for irrigation overflow
TOTAL LEAVING RAVINE
Sheet flow to south towards the Ridge
Sheet flow to south towards ravine
EXISTING CONDITIONS
COMMENTS
Tliru_CULV,--#3- West side of Shields
Thru CULV. #2 Under the private drive 0
Thru CULV. #1 Under the private drive
Add 30 cfs for irrigation overflow
Thru CULV. #1 Under the private drive
Total flow exiting at ravine
Add 30 cfs for irrigation overflow
TOTAL LEAVING RAVINE
Sheet flow to south towards The Ridge
Sheet flow to south towards ravine
THE JACK JOHNSON COMPANY
HYDROLOGY
STUDY - LAURIE SUBDIVISION
RATIONAL METHOD
- POST DEVELOPED CONDITIONS
- 2 YEAR
STORM
Location
Point
Area
Runoff
Freq.Fac.
AxCxCf
Flow time Flow time
Rain Int.
Flow "Q"
(acres)
"C"
"Cf"
Tchannel Tc (min.) "I"(in./hr.)
cfs
Offsite Area "A"
Pt."A"
10.50
0.20
1.0
2.10
15
2.1
4.41
Onsite Area 1
Culv.3
0.50
0.45
1.0
0.22
10
2.1
0.46
Total
11.00
0.21
1.0
2.31
15
2.1
4.85
Offsite Area "B"
Pt "B"
2.50
0.25
1.0
0.62
10
2.5
1.56
Onsite Area 2
Culv.2
0.60
0.45
1.0
0.27
10
2.5
0.67
Total
3.10
0.29
1.0
0.90
10
2.5
2.25
Offsite Area "C"
Pt."C'I
4.50
0.25
1.0
1.12
10
2.5
2.81
Onsite Area 3
Culv.1
0.75
0.45
1.0
0.34
10
2.5
0.84
Total
5.25
0.28
1.0
1.47
10
2.5
3.67
ADD FOR IRRIGATION
OVERFLOW
30.00
Total
Culv.1
33.67
Onsite Area 5
1.40
0.30
1.0
0.42
10
2.5
1.05
Total Site Leaving
Ravine
9.75
0.29
1.0
2.83
12
2.5
7.07
ADD FOR IRRIGATION OVERFLOW
30.00
TOTAL SITE + IRRIGATION OVERLOY LEAVING RAVINE
37.07
Onsite Area 4
Sheet Flow 1.85
0.45
1.0
0.83
10
2.5
2.08
Onsite Area 6
Sheet Flow 1.40
0.45
1.0
0.63
10
2.5
1.57
THE
JACK JOHNSON COMPANY
HYDROLOGY
STUDY - LAURIE SUBDIVISION
RATIONAL METHOD
- POST DEVELOPED CONDITIONS
- 100 YEAR STORM
Location
Point
Area
Runoff
Freq.Fac.
AxCxCf
Flow time Flow time
Rain Int.
Flow "Q•
(acres)
"C"
"Cf"
Tchannel Tc (min.) "I"(in./hr.) cfs
Offsite Area "A"
Pt."A"
10.50
0.2
1.25
2.62
15
6.0
15.72
Onsite Area 1
Culv.3
0.50
0.45
1.25
0.28
10
6.0
1.69
Total
11.00
0.21
1.25
2.89
15
6.0
17.32
Offsite Area 118"
Pt "B"
2.50
0.25
1.25
0.78
10
7.0
5.46
Onsite Area 2
Culv.2
0.60
0.45
1.25
0.34
10
7.0
2.36
Total
3.10
0.29
1.25
1.12
10
7.0
7.87
Offsite Area "C"
Pt."CI1
4.50
0.25
1.25
1.41
10
7.0
9.87
Onsite Area 3
Culv.1
0.75
0.45
1.25
0.42
10
7.0
2.95
Total
5.25
0.28
1.25
1.84
10
7.0
12.86
ADD FOR IRRIGATION
OVERFLOW
30.00
Total
Culv.1
42.86
Onsite Area 5
1.40
0.45
1.25
0.78
10
7.0
5.51
Total Site Leaving
Ravine
9.75
0.29
1.25
3.53
12
7.0
24.74
ADD FOR IRRIGATION
OVERFLOW
30.00
TOTAL SITE + IRRIGATION OVERLOW LEAVING RAVINE
54.74
Onsite Area 4
Sheet
Flow 1.85
0.45
1.25
1.04
10
7.0
7.28
Onsite Area 6
Sheet
Flow 1.40
0.30
1.25
0.52
10
7.0
1.05
COMMENTS
POST DEVELOPED CONDITIONS
West side of Shields
Thru CULV. #2 Under the private drive
Thru CULV. #1 Under the private drive
Add 30 cfs for irrigation overflow
Thru CULV. #1 Under the private drive
Total flow exiting at ravine
Add 30 cfs for irrigation overflow
TOTAL LEAVING RAVINE
Sheet flow to south towards the Ridge
Sheet flow to south towards ravine
POST DEVELOPED CONDITIONS
COMMENTS
T#►iu C11�y.-M3 West side of Shields
Thru CULV. #2 Under the private drive •
Thru CULV. #1 Under the private drive
Add 30 cfs for irrigation overflow
Thru CULV. #1 Under the private drive
Total flow exiting at ravine
Add 30 cfs for irrigation overflow
TOTAL LEAVING RAVINE
Sheet flow to south towards The Ridge
Sheet flow to south towards ravine
PROJECT:
DESIGNER
DATE.
HYDROLOGIC AND CHANNEL INFORMATION
SKETCH
STATION:
EL.
Hw
QI = TAILWATER ELEVATION =
Q2 = TAILWATER ELEVATION =
EL
,
Tw
L
EL.
(01'= DESIGN DISCHARGE, SAY 025
MEAN
STREAM VELOCITY
=
L _
02 :. CHECK DISCHARGE, SAY050 OR 0100)
MAX. STREAM VELOCITY
_
IOOt
HEADWATER COMPUTATION
=
,
CULVERT
INLETCONT,
OUTLET CONTROL
HW-H+ho -L3
CHART
DESCRIPTION
0
SIZE
a ,
F o
COST
COMMENTS
[ENTRANCE TYPE
H =
o
7 J
° i
p
Hw
Ke
H
do
d
�2 D
Tw
ho
L3
Hw
No.
Hw
V
Alp,
s-
3
0._2
p.
/�
1-3
1,013
3• Xs
Al�
SUMMARY 8t RECOMENDATIONS;
E
•