HomeMy WebLinkAboutDrainage Reports - 07/25/1996 (2)r
PROWT10TV OF
"RT C4 ' ai � n n1aar� Report MAY 2 2 lyyo
Final Drainag and Erosion Control Studyl
for
Timberline Farms Cornerstore, P.U.D.
Ft. Collins, Colorado
January 22, 1996
Revised: March 20, 1996
Revised: May 8, 1996
Prepared for:
Diamond Shamrock, Inc.
520 E. 56th Avenue
Denver, Colorado 80216
Prepared by:
Galloway, Romero & Associates
14202 E. Evans. Avenue
Aurora, Colorado 80014
Attn: David L. Jones
MGalloway, Romero & Associates
Design Engineering Planning
14202 East Evans Avenue
Aurora, CO 80014
(303) 746-7448
FAX: (303) 746-7480
May 8, 1996
This final storm drainage study and report for Timberline Farms Cornerstore
P.U.D. was prepared using the City of Fort Collins Storm Drainage Design Criteria,
dated May, 1984.
The results of this study are reported in the enclosed report and utility plans.
��p REG�S
David L. Jones, P.E.
Galloway,Romero and Associates
14202 E. Evans Ave. U; 30254
Aurora, Co. 80014
(303) 745-7448
SSfONAL�NG
Galloway, Romero & Associates
Design Engineering Planning
14202 East Evans Avenue
Aurora, CO 80014
(303) 746-7448
FAX: (303) 746-7480
May 8, 1996
This final erosion control plan and report for Timberline Farms Cornerstore
P.U.D. was prepared using the City of Fort Collins Erosion Control Reference Manual
dated January, 1991.
The results of this study are reported in the enclosed report and utility plans.
David L. Jones, P.E.
Galloway,Romero and Associates
14202 E. Evans Ave.
Aurora, Co. 80014
(303) 745-7448
e000155 RErzS,T
! 30254
%oNvnl_EN�'
Table of Contents
I. General Location and Description
1
II. Drainage Design Criteria
1
A. Regulations
1
B. Hydrological Criteria
1
III. Drainage Facility Design
1
A. General Concept and Offsite Influences
1
B. Developed Site Drainage Basins
2
IV. Erosion Control Study
3
Appendix A: Storm Drainage
Vicinity Map
A.1
Rainfall Intensity Duration Curve
A.2
Estimate of Average Flow Velocity
A.3
Runoff Computations: 10 Year Developed
A.4
Runoff Computations: 10 Year Developed
A.5
Runoff Computations: 100 Year Developed
A.6
Runoff Computations: 100 Year Developed
A.7
Composite Runoff Coefficients for Developed Basins
A.8
Runoff Computations: 10 Year Historic
A.9
Runoff Computations: 100 Year Historic
A.10
Composite Runoff Coefficients for Historic Basins
A.11
Swale Calculations
A.12
Pond Volume Calculations
A.13
Milestone Drive Final Drainage Report: Hydrologic
Characteristics
A.14
Milestone Drive Final Drainage Report: Exhibit "A"
A.15
Sunstone Village 7th Final Drainage Report: Page 9
A.16
Sunstone Village 7th Final Drainage Report: Pond
Calculations
A.17
Appendix B: Erosion Control
Rainfall Performance Standards for Fort Collins B.1
Rainfall Performance Standard Evaluation B.2
Effectiveness Calculations B.3-B.6
Construction Schedule B.7
Erosion Control Cost Estimate B.8
The Timberline Farms Cornerstore P.U.D is bounded by
Timberline Road on the west, Milestone Drive on the north, and
unplatted land on the east and south owned by Oak Farm Inc. c/o
G.T. Land, Inc., Ft. Collins. It is located in the SW 1/4 of
Section 32, Township 7 north, Range 68 West of the Sixth
Principle Meridian, City of Fort Collins, Larimer County,
Colorado.
The Timberline Farms Cornerstore contains approximately 1.2-
acres and is presently undeveloped. Native grasses presently
cover the property. The topography of the site generally slopes
from south to north at approximately 1.3 percent. The site does
not lie within a designated flood hazard area according to the
Flood Insurance Rate Map Community panel No. 080102-0006.
II, Drainage Design Criteria
The City of Fort Collins Storm Drainage Design Criteria
is being used for the subject site.
r . .
The Rational Method for determining surface runoff was
used for the project site. The 10 year and 100 year
storm event criteria were used in calculating runoff
flows. Times of concentration were calculated using
the overland flow equation and estimates of average
flow velocity. Composite runoff coefficients were
calculated for individual site basins and the overall
site. Calculations are included in the Appendix A to
this report.
Historically, the land for this site drains to the
north past Milestone Drive, then to the east and eventually
into the existing detention pond No. 1 of Sunstone 7th
filing. This pond flows by swale to pond No. 2, then to the
Harmony village Mobile Home park detention pond and finally
to the Sunstone regional detention pond in accordance with
the Fox Meadows Basin Drainage Master Plan. The Sunstone
7th ponds are sized assuming development with a "C" of 0.85.
The site receives offsite flows from the undeveloped
area north of the Spring Canyon Ditch and immediately south
Page 1 of 3
of the site, offsite basin OS-4. This 0.87 acre parcel's
natural northerly flow. The offsite flows will be diverted
northeast around the developed site until the adjacent
properties are developed. Minor regrading south of the site
will easily accomplish this diversion. When the adjacent
property to the south is developed, runoff will be able to
flow along common access drives to the Sunstone 7th
detention pond.
B. Developed Site Drainage Basins
The site is divided into several basins. Basin A is a
0.07 acre basin along the north property line consisting of
landscaping. Flows from this basin travel overland to the
southern curb line of Milestone Drive. Along with offsite
basin OS-1, which includes half of Milestone Drive adjacent
to the subject property, the 10 and 100 year runoff of 0.70
and 1.36 cfs, respectively, flows northeast in the Milestone
Drive curb to an inlet which discharges to the Sunstone 7th
Filing pond no.l. This is shown at design point A.
Basin B is a 0.99 acre basin consisting of the majority
of the site, consisting of site paving, structure roofs, and
landscaping. Along with offsite basin OS-4, consisting of
paving and natural cover to the south, and offsite basin OS-
5, consisting of paving to the east, flows of 2.33 and 5.74
cfs, for the 10 and 100 year runoff, coverage at design
point B. A temporary grass lined swale will carry these
flows to the Sunstone 7th Filing Pons No. 1 across adjacent
undeveloped property. The land between the site and the
pond will be regraded to accommodate the combined flows of
these three basins.
Basin C is a 0.08 acre basin consisting of half the
landscaped berm along the west property line. It drains on
to the Timberline Road right-of-way and along with offsite
basin OS-2, which consists of paving at the curb cut at the
south.end of the west property line. These two basins
contribute to offsite basin OS-3, which consists of half of
Timberline road adjacent to the site. These flows, 1.43
and 2.76 cfs for the 10 and 100 year storms, respectively,
converge at design point C and flow north to roadside
ditches north of Milestone Drive in accordance with the
Final Drainage Report for Timberline Road prepared by
Northern Engineering Services, Inc., June 1994.
The Sunstone 7th detention pond No. 1 has a
contributory area of approximately 26 acres and when this
area is fully developed, will require a detention volume of
3.8 acre feet, according, to the Master Drainage Plan. This
volume is based on a runoff coefficient of 0.85.
Page 2 of 3
Currently, the pond has a storage capacity of 3.1 acre
feet, according to the Sunstone Village 7th Subdivision
Drainage Report. With development described in the
Sunstone Village 7th subdivision P.U.D. report, the
Milestone Drive Street Improvements Report and this report,
approximately 10.48 acres have been developed. The
remaining undeveloped 15.52 acres contribute runoff with a
"C" value no greater than 0.40. The table in the appendix
shows that the maximum pond volume of 2.3 acre feet does not
exceed the current 3.1 acre feet available based on current
and known planned development of 10.48 acres. As further
development occurs south and east of Timberline Farms
Cornerstore P.U.D. the pond capacity should be re-evaluated.
In summary, the proposed improvements for this project
are consistent with the Master Plan and previously prepared
storm drainage plans.
It is determined from the City Reference Manual and
Wind Erodibility Zone Map that the wind erodibility zone is
moderate for this site. The potential exists for moderate
erosion during construction and after completion of the
Cornerstore improvements. Immediately after overlot
grading, gravel mulch is to be placed in areas that are to
be paved, excluding building envelopes. Permanent sod or
seeding with mulch is to be applied immediately after final
grading of landscaped areas calling for grass. Calculations
supporting erosion control measures may be found in the
Appendix B.
Page 3 of 3
Appendix A
Storm Drainage
VICINITY MAP
SCALE. 1"=2000'
No Text
St
3C
J- 20
J
1
I I 11'
IIIIIIII
/I/
II
II
1 T T iyr
I `C
frry er .3T r 1
17
•
ly
yi
I / 1 P 14 i I / / i i i 1 i 1 1 1
10 20
VELCC:TY IN F^ P=_.R ScC.^.ND
ESTIMATE OF AVERAGE FLOW VELOCITY FOR
USE W1 T H THE RATICNAL FORMULA.
! MCST FRECUENTLY CC :IJRRING 'UNDE'JEL^P 3
LAND SURFACSS IN THE OENVER RSGICN.
REFBRENCZ: 'Uroan Nyaralagy For Smass Watarsnaes' Taasnseas
Rasaaso No. $5, USDA, SC3 an. 1975.
m
I
C_
I�
Z
_
-+
F
O
6
-• F
C�
N
pp
cn
—
m
iJ
3
c
I
I
_
• E
N
N
�
N
M
�
_
U"
Ui
J
O N
�
�
O 1Y
V�
9
Q
_
O
10
v
00
�
0
a
p
p
o
N .
0000
p
p
O
O
O
r
+
V
p
CO.
V-
S
Q
o
O
Q
c
o C
Q0
CL
A
O
E
0
STET A.`i
^y
W
I
d
C
[zQ
y
O
J
0
C
0
C
�
m
o
C
T
m
i
Q m0
ivm
v v
O
�
w 3
_
�-
��
�
s
�za
Is
�r c
o
a
o
m U
y
� O
—
y —
— , !f
•
•
0
=
0
1V
�J
N
N I
I
I
c J �
•
G �
W
w
J
TA
a
O
p
p
o
N
O
o
CO
I 0
I O
I
O
Q1,
p
S
CAN
o
o
O
a a
s
V
i t
SNEET A.S
N
I
CI
0
N
o
c
C
<8
•
0
•
� V
Q m
3
C
pww
O
�
C
°
W pww
R
Xor
V. —
C
i
o z a
r �N
O
•
Y
G
U
-•% �
n
N
I
I
I
I
•(
�
I
I
I
I
I
I
��
c' J
1p
.I
r
C
T
v
�
Q
V
9
w
p
a �
u_
= E
i
4
N
I
w
T-
Q
cO
O
O
O
o
O
O
a
L
a
<Q
o
a
o
0
0
0 o
• c
�
I
0
I
�
n
c
I Il
\
|
}
{
-
[
ƒIkk
2
2
ki
\
�}
�
I
=
L
e
®�
\
§\§/§
3
� �
f
`
@
k
/
'
LP
�
§
|
|
���
� �
�
f
g
•
■ -
m
2
%
0
�
R
�}=
|
.�
�
O
0
o
O
�
\
@
�
« §
o
Q
O
■
w
�
\ �
i
5§Ee —, A 2
Timberline Farms Comerstore, P.U.D.
Diamond Shamrock, Inc.
Timberline Road & Milestone Drive
Composite Runoff Coefficients for Developed Drainage Basins
Basin
Overall
Area
Ac
Landscaped
Area
Ac
Landscape
Coefficient
Paved
Area
(Ac)
Paved
Coefficient
Roof
Area
(Ac
Roof
Co efficient
Composite
Coefficient
A
0.07
0.06
0.35
0.01
0.95
0
0.95
0.44
B
0.99
0.13
0.20
0.68
0.95
0.14
0.95
0.83
0.04
0.35
C
0.08
0.08
0.35
0
0.95
0
0.95
0.35
OS-1
0.15
0.02
0.20
0.13
0.95
0
0.95
0.85
OS-2
0.01
0
0.20
0.01
0.95
0
0.95
0.95
OS-3
0.36
0.04
0.20
0.28
0.95
0
0.95
0.80
0.04
0.35
OS-4
0.87
0.87
0.20
0
0.95
0
0.95
0.20
OS-5
0.04
0
0.20
0.04
0.95
0
0.95
0.95
Overall
2.57
1.28
0.35
1.15
0.95
0.14
0.95
0.65
sE+EE7 A.8
N
O
CI
C
U
O
N
O
c
0
.1 9
m
C
r
m
3
b h A
0
vv
d
o
h 0
R Sin
40
03
N
d'
C
I
I
W
In
to
�I�
0
I
I�
O101
�
O
O
cJ
�'
C
_1�
d
Q
a
i
SHEET A.cl
d
OI
O
U
O
/N0
0
`
o
g
y
"'
OVhh
tj
I,rzol
73
S
>y`
TA
S
cc J
N
m
N
O
O
O
O
N
c4
a
I
N
N
I
I
o
N
H
O
9
O
O
O
O
O
O
I o
f
I
N(
N
N
O
u
a
o
tp
<Q
o
0
• e
0
SH EE—, A. I o
Timberline Farms Comerstore, P.U.D.
Diamond Shamrock, Inc.
Timberline Road & Milestone Drive
Composite Runoff Coefficients for Historic Basins
Basin
Overall
Area
Ac
Landscaped
Area
Ac
Landscape
Coefficient
Paved
Area
Ac
Paved
Coefficient
Roof
Area
Ac
Roof
Coefficient
Composite
Coefficient
A
0.01
0
0.20
0.01
0.95
0
0.95
0.95
B
1.14
1.14
0.20
0
0.95
0
0.95
0.20
OS-1
0.15
0.02
0.20
0.13
0.95
0
0.95
0.85
OS-2
0.04
0.04
0.2
0
0.95
0
0.95
0.20
OS-3
0.35
0.07
0.20
0:28
0.95
0
0.95
0.80
OS-4
0.88
0.88
0.20
0
0.95
0
0.95
0.20
Overall
2.57
2.15
0.20
0.42
0.95
0
0.95
0.32
TIMBERLINE FARMS CORNERSTORE PUD
Grass Lined Swale
1:4 Side Slopes
O
n
1/n
S
S^.5
d
A
P
R^2/3
2.82
0.06
16.67
0.01
0.10
0.66
3.06
7.44
0.55
2.92
0.06
16.67
0.01
0.10
0.67
3.14
7.52
0.56
3.01
0.06
16.67
0.01
0.10
0.68
3.21
7.61
0.56
3.10
0.06
16.67
0.01
0.10
0.69
3.28
7.69
0.57
3.20
0.06
16.67
0.01
0.10
0.70
3.36
7.77
0.57
7.32
0.06
16.67
0.01
0.10
1.02
6.20
10.41
0.71
7.48
0.06
16.67
0.01
0.10
1.03
6.30
10.49
0.71
7.64
0.06
16.67
0.01
0.10
1.04
6.41
1 10.58
0.72
7.81
0.06
16.67
0.01
0.10
1.05
6.51
10.66
0.72
7.98
0.06
16.67
0.01
0.10
1.06
6.61
10.74
0.72
<= 10 year flow
<= 100 year flow
SI iF�T A, I Z
PROJECT: TIMBERLINE FARMS CORNERSTORE PUD
LOCATION: SEC TIMBERLINE ROAD AND MILESTONE DRIVE
FORT COLLINS, COLORADO
Total area contributing to pond: approx 26 Acres
Developed area contributing to pond 10.48 Acres
Undeveloped area contributing to po 15.52 Acres
100 Year runoff coefficients
For developed areas 0.85 •
For undeveloped areas 0.40
Onsite basins A and B along with offsite basins OS1, OS4 and OS5
contribute to Sunstone 7th Filing Detention Pond #1.
TIME
100 YEAR AREA
RUNOFF
100 YEAR HISTORICAL
POND
VOLUME
(A)*(C)
(A)*(C)
INTENSITY
SEC/MIN
VOLUME
ELEASER
VOLUME
(MIN)
DEVELOPE
UNDEVELOP
(ACRE FT)
(CFS)
(ACRE FT)
(ACRE FT)
5
8.908
6.208
10.00
300
1.041
12.00
0.083
0.96
10
8.908
6.208
7.30
600
1.520
12.00
0.165
1.35
15
8.908
6.208
6.00
900
1.874
12.00
0.248
1.63
20
8.908
6.208
5.20
1200
2.165
12.00
0.331
1.83
25
8.908
6.208
4.60
1500
2.394
12.00
0.413
1.98
30
8.908
6.208
4.20
1800
2.623
12.00
0.496
2.13
40
8.908
6.208
3.50
2400
2.915
12.00
0.661
2.25
50
8.908
6.208
3.00
3000
3.123
12.00
0.826
2.30
60
8.908
6.208
2.60
3600
3.248
12.00
0.992
2.26
70
8.908
6.208
2.3
4200
3.352
12.00
1.157
2.20
80
8.908
6.208
2.05
4800
3.415
12.00
1.322
2.09
90
8.908
6.208
1.85
5400
3.467
12.00
1.488
1.98
100
8.908
6.208
1.7
6000
3.540
12.00
1.653
1.89
110
8.908
6.208
1.55
6600
3.550
12.00
1.818
1.73
120
8.908
6.208
1.45
7200
3.623
12.00
1.983
1.64
130
8.908
6.208
1.33
7800
3.600
12.00
2.149
1.45
140
8.908
6.208
1.25
8400
3.644
12.00
2.314
1.33
150
8.908
6.208
1.18
9000
3.685
12.00
2.479
1.21
160
8.908
6.208
1.12
9600
3.731
12.00
2.645
1.09
170
8.908
6.208
1.1
10200
3.894
12.00
2.810
1.08
180
8.908
1 6.208
1 1.05
1 10800
1 3.935
12.00
1 2.975
0.96
REQUIRED POND VOLUME IS 2.30 ACRE-FEET. SUNSTONE VILLAGE 7th FILING
SUBDIVISION PUD FINAL DRAINAGE REPORT BUILT THE POND TO A VOLUME OF
3.1 ACRE-FEET. THE POND WILL NOT REQUIRE EXPANSION.
<= required
volume
SHE rA,i3
L. DR.AltjAgF FLepoo-T
wLeSToNE D(L1VE
TABLE 1
HYDROLOGIC CHARACTERISTICS
MILESTONE DRIVE IMPROVEMENTS
TIMBERLINE RD. TO WINTERSTONE DR.
2 YEAR 100 YEAR
BASIN AREA C VALUE TIME OF TIME OF i 2-YR i 100-YR 0 2-YR 0 100-Y DESIGN
DESIGNATION CONCEN- CONCEN- POINT
TRATION TRATION
(ACRES) (MIN) (MIN) (in/hr) (in/hr) (CFS) (CFS)
TRACT G-1
2.44
0.85
15.8
14.3
2.0
6.2
4.1
15.1
TR G-2
0.38
0.85
10.0
10.0
2.5
7.2
0.8
2.4
SS 8-1
0.88
0.40
10.0
10.0
2.5
7.2
0.9
3.2
SS 8-9
0.57
0.6
10.0
10.0
2.5
7.2
0.9
3.1
SS 7-7
0.71
0.6
12.3
10.3
2.3
7.1
1.0
3.7
VI
SS 7-8
0.38
0.6
10.0
10.0
2.5
7.2
0.6
2.0.
r TRACT E-1
2.41
0.85.
12.4
10.7
2.3
7.1
4.7
16.9
TRACT E-2
0.38
0.85
10.0
10.0
2.5
7.2
0.8
2.4
COMBINED
FLOWS
8-1 8 G-1
3.32
0.73
15.8
14.3
2.0
6.2
4.8
18.8
I
8-9 8 G-2
0.95
0.70
10.0
10.0
2.5
7.2
1.7
6.0
II
8-11 8-99
4.27
0.71
15.8
14.3
2.0
6.2
6.1
23.5
III
G-1 8 G-2
7-8 8 E-2
0.76
0.73
10.0
10.0
2.5
7.2
1.4
5.0
IV
8-11 8-91
5.03
0.71
15.8
14.3
2.0
6.2
7.1
27.7
V
G-1 8 G-2
7-8 8 E-2
NOTE: "C" VALUES ARE BASED ON 0.40 FOR MOSTLY REAR YARD AREAS,
0.6 FOR FRONT YARD AND STREET AREAS, AND 0.85 FOR
PLANNED BUSINESS AND STREET RIGHT OF WAY AREAS
NOTE: SEE STORM DRAINAGE REPORT FOR TIME OF CONCENTRATION
CALCULATIONS
79ACT E-1 -(Mll ESToNS 012iVE F OAL- D( A%QACAfi V ep04; ,> C.ONSISTs , I l.I pA(LT,
Of= aASIrJS AI PS I C, � 0e7-210'5-¢ AND OS-Cj (TIM6EItLiOE FA(LM15
G.0(LNE(LSTo1L.E �Epo(LT), A OVet.-op5to "G" VALos of o.85 IS USSo
r-00- Bark 17LA::--M 'e-1 A -ND r=-Z FOX PLANNED 5u%i e_,5s USES.
swF_gwr A - 14
ff
I
ff
I
I
15' UTIUTY AND DRAINAGE ESMT.
I
i
I T
PCR FL - 60.40
HIGH PT. FL = 60.77
BOE - 61.53
•�1�61 •
M
LOW PT. FL - 58.79
INV. SE. 56.57
INV. NW. 56.59
PT FL = 59.07
D.A. G-2 BOE - 59.83
A = 0.38 AC
Q 2 = 0.8 - CFS GRADE BREAK
Q100 = 2.4 CFS PCR FL = 59.77
PC FL = 60.14
- GRADE BREAK BOE = 60.90 /
PCR FL = 60.23
09• 000,
3+00\'
_ `, `
i
I:
V
n
8 _ 2' CONC. PAN ;
56.04
r
I
25
�\
INSTALL 4' TRICKLE PAN `�
_ Aqs
PROPOSED DRAINAGE ESMT. TO
BE DEDICATED BY SEPERATE DOCU
f
1 V. 0
SO.
MH. STA. 6+65.33 RF
C DSUIN
/
56.25
RIM
= 59.84 1� -�� 5$
INV.
SE. = 56.41 `-�-
INV.
NE. = 56:45
LOW PT.
FL =
58.95
INV. SE.
= 56.35
INV. NW.
= 56.37
BOE =
59.66 ,
PT FL = 59.10
BOE = 59.86
1Q -
20, LF
1'
X 8' CBC
LINE A
Q -
-11
40 LF
1'
X 8' CBC
LINE A
(3] -
26 LF
1'
X 8' CBC
LINE A
Y`
®-
14, LF
15" RCP
LINE B
ktl
6. LF
15'
RCP
LINE B
A D.A.
-2
------ 6v
= . •-- - P 1 ' �- 4959 Q 2 = 0 .
4960 PC FL = 60.56 Q 1 00 -
I SECS/b� BOE = 61.32 I
GRADE BREAK GGRADEBR AK
0.20 IBG E
=1 +: PCR FL 60.59
HIGH. PT FL - 61:18 DRAINAGE AND UTILITY ESMT.
BOE = 61.94 ^_. _'�\ TO BE DEDICATED
D DOCUMENTOYPBOTH SIDES)
FARc ��PCR FL 60.72
= I I
NOTE:
I '�.' ' '� " • ALL STORM RUNOFF FROM I
;'•.r i /'�' ' -'-' ' ' I/ /"v" ""' 1 �•'" "'..'"''" " ' �- yg41 SOUTH OF ,MILESTON,E DRIVE
%,.,..,
i DIRECTED EASTERLY AND NC
I MILESTONE DRIVE.
15' U71UTY AND DRAINAGE ESMT. -
i
DA E 1 /
EP
1.
All erosion conti
Lo recommendatior
Control Manual.
C
2.
All disturbed are
.FS
with temporary ci
grading.
CFS
3.
A silt fence sha:
to protect againi
detention pond.
Q
4.
Straw bales shal.
r- r` • ' • "` �
the drains a frog 9
5.
Once the 4'. cone
burlap .sand bags
bales.'
HALL BE
INTO
A = 2.41 AC ` ` �" VARIES FROM 8' WIDE AT
j Q2 = 4.7 CFS / _ OUTLET TO 4' WIDE AT
�L CONNECTION TO 4' WIDE
Q 1.00 = 16.9 CFS CONCRETE TRICKLE PAN
I T _OWLINE
10
;= I
�►NP��- DR,b.t�1�� Imp°�
p/ItL��1(oNE ti�vE
i- v n• .r
THIS "GOMMfcFt-G.1Au. C12JJN011 INC�.JD�S THE OIAMoNO 5F1AM(LoC�1G. S1'T�
SUNSTONE VILLAGE 7TH SUBDIVISION P.U.O.
PRELIMINARY AND FINAL STORM DRAINAGE REPORT
an inlet and storm sewer from the north side of Stoney Creek
Drive at Milestone southerly under the easterly curb and gutter
of Milestone to the west end of Detention Pond #1.
Also, a drainage swale with concrete pan is required on the
rear of 7th filing Lots 6 thru 13 to intercept flows and pass the
runoff to the sidewalk culvert near the northeast corner of Lot
13 and into Stoney Creek Drive. Cross Section D—D is provided at
Exhibit A that provides hydraulic characteristices of the swale
along the rear lot lines. The sidewalk culvert will pass most of
the 100 year storm under the 2 foot wide steel grate. City
Practice indicates 1 or 2 percent of the 100 year flow should
pass under the sidewalk culvert, so the 2 foot sidewalk culvert
is more than adequate in this location.
During the interim time prior to development of the
commercial ground to the south and southwest of the 7th filing,
the proposed detention pond in the southeast corner of Sunstone
Village will be oversized beyond that required for storm runoff
from the 7th filing. The runoff from sub basins 7-7 thru 7-9
will be temporarily carried into the detention pond with a
temporary drainage berm/swa.le at the south end of Milestone Drive
to be constructed in this phase.
When completed, landscaped, and subject to a warranty period
for the improvements, the City of Fort Collins has agreed to
accept ownership of the drainage tract for future maintenance of
the integrity of the drainage capacity.
As shown on Exhibit A as Design Point 3, the inlet on the
north side of Stoney Creek Drive will only receive about 1.0 cfs
during a 2 year storm, and 3.7 cfs during a 100 year storm.
Figure 5-2 of the City Drainage Criteria manual shows a
theoretical capacity of 1.2 cfs per foot of length within the
allowable 6 inch depth and 8 inch heigth of opening for the 2
year storm. A Reduction Factor of 80 percent shows 0.96 cfs per
foot actual capacity. The four (4) foot inlet will accomodate 4
times 0.96,--or 3.84 cfs. This is more than the 100 year storm
discharge,_so a four foot inlet is more than adequate to
accomodate"those flows within City Criteria.
A 15 inch storm sewer (City of Fort Collins minimum size)
will easily pass these flows to the detention pond with
insignificant depth of flow in the culvert. Hydraulic
calculations are provided immediately after this sheet to show
the performance of the 15 inch culvert under Milestone, as well
as the 18 inch culvert releasing stormwater from Detention Pond
#1.
In summary, the proposed storm drainage for the Sunstone
Village 7th filing is -rather minor in scope, and the resulting
storm drainage system should adequately protect life and property
on the site.
I
ter, e . i
INTERMILL LAND SURVEYING, INC.
1301 North Cleveland Avenue
LOVEuwD. COLORADO 80537
(303) $69-0516
—7 TIf C_
,o.
«Kn No. cw
Mcu"m n p!� oAn Z-IZ-9 3
OMICKED BY DATE
...... .............. _._.(5-0_._... ................ _...... �S.F_...._.._.._..._�.F.._T�.................. . ..... _...... ........
_:...u.._t..e.,=......nr..._G.-..F._..r......:......................
.:3.....1.._5...._..c..__._.:_..
Appendix B
Erosion Control
PAGE 23
� c � ccc ccc
1 I
1 O I v c In to Iri
m
1 I
1 C I CN (m ctm CCCCC
1
I C I cccctnrLrl.rr Ln.
I c I C C C p p C p C g q
t C i CCC C C1 a% C% C4 CI CN CI C�CICOC
1 I
I C 1 c c c c c c c c c c c c r r r
1 on I C C C O C C C C p g C C C C C
I 1
1 c 1 I�CCpC%(nC%a%C%C%(M(nC+e+C%an(Mctc+cl�
I 1 . .
I C I c c c c c c c c c c c c c c c c c c c c
I N 1 «CCCCC C.«cc cc C«CCCC
I I
1 C I CM Cr to r tC
1 1
1 C I c c c c c c c c c c c c c c c c c c c c c c c c c c
1 r+ 1 CCCCCCCCCCCCCw_..«CCCCCC_.CCO
tO r.- q
c c c c c c c c c c c ccc c ccc c c c c c c
CC C I I C C C g p p C C C O C C C q C C q C C q C w C C q q
C I C I tCCNMccrto to to tO tp tD tC tD tp tC tp tC tG f� .;� fin
C 1 C 1 M C C C C C C C C C C C C C C C C C C C C C C C C C
U I I C C C g C C C C q q C C p q C p C C q C C q C C C q
1 1
I C 1 C C1 CV M M C c C C r '.n r Ln r txt In r r tC tC tG tC tC tp f�
C C C C c C C C c C C C
1 I
J 1 C I .�: C . r•. r•NN M MM M CCCCC CCCr'l. L.'7 tG t0
U I tG I M(^. McccC C CCCCCCC cccccc CCCCC
I 1 CC«CqC CgCCgCCCCCpC pCgq.«.^,^,CC
I
C I B C I 1.0. . . t" C C 1 C C. -- •�. . . . N N N M Men f M M C C C C C
LA- I v Ln I NM MM M M CC C-Cm CCC CCCC C CC CC CCCC
_ I i .... « Cp pC CC ggqCCCCwq«CCCC«w.:^.0
I W I
L:. L.^. tC
.
C%.^ J M M M M M M M M M M M f" 7 M M T; M ^' f M M c c c c C
Q { 1
C 1 C I '17CC—Nrc ..L^.« ^. .
Gr` I
. �. N N .^ M M CCCC_. tit .
I ^. I N N N N :"? M M ('^' C.•: �! M : "7 ^^. ^^ t^ M
W C««
I
I C; I ". . tG C '1 C .� ^J ^J M C"': C,.
1 M I C •-• N. J N N G V C V N C V N N N C V N N N N N N N N• V
C 1 1
li. 1 to I L^.. . . .C�C� CL.tD:�nt�gCCC�CICCICCCCCC
W 1 N 1 C1 C C .-+ 1: r. 1: -+ N N N N N N
W I 1 r\ C C g q
I 1
I C I C'1] O M Lo tpC C CN'CN N N N M M f'M M MM
1 N I C C; C C O O C C C •-+ .--..'-... r+ ... ^-' .--' r+ .--..'.+ .-' r+ .-' •--..-.
I I
I Ln I C N C r+ C 1-1to 1f� p .t1 C1 C O +•' �`• .-r �'• �" N CV N M M M M M
1 1
. . . . . . . . . . . . . . . . . . . . . . . . . .
COC1�C C% � C1 as (M O O COO C C COCCCC OC
CC g q q q q CO O q p q p q q p
I 1
I C 1 tpMO CI�� . . . .MCCr V7 tt'f rtC tC„l tc tcn ntc tp tp
I I V* I'- q Cc = Cq CC g C p C C q C p q
I I C., r� f-Ir�r-I l�.l.. f� ,� f� F-I C.,
1 1
t to I C% C to r� kc to tp tO C C M M N N C1 to Itr tp
I 1
1 C I O N N CV N N LV N N N N CV CV N N N N N N N C C
1 3 1- I C C C O C C C O C C O C C O C C C C C O C C C C O C
1 0 C? F-• I O C C C C C O C C O O O C O C O O C C C C C C C C O
1 JZi 1 MQLC'!tC f�pC1C r+N MCLn tG r� C% C r C t:. C tmO
I LL W v I N N M M C c Ln
I � I
T%3L? 3.L
Zp-ikjF,A,L.L► pe(Lfac -MAW e evALUATIofJ
F(LOJ ECT: TiM30/LL vJZ fA(2,MS G02h1E(I.�To (LE (�.tJ •O,
C4pAF.ZtED6y: �p,u.oi.Ja�(� �o1rtER.o � hsScxi��5 DA-re JvrJ 21,Icm
N N N
H H F
W W W
W W W
N 0 N
O O O
000
H
-aa
aaa
nIVN
bEVEtOj�E�
ERaD�6��It�(
ash
L6
S6
PS
Su66ASIO
-ZONE
(,4c-i
( }i
i'�)
(i�
�%)
(X )
`•ag
A
MODEIATE
0,07
lS
10
16
10
04,00
B
MODERATE
0,19
2 50
2
250
2
"1�► ,� 5
G
O, O8
12
33
12.
33
8 4. 83
os-z
jJ1ODE(IATE
p,o I
1 S
3
IS
3
80,30
o514-
KODE(LATE
O.O U
Ito
3
Ito
3
80.39
os-5
Mo��{inrE
0,0q-
125
I
125
I
'15,03
SH�CET B .2
EFFECTIVENESS CALCULATIONS
----------------------------------------------------------------------I
PROJECT: Tim5r= LI-uJB irAzZK Co(tNE(LSTo(Le puo STANDARD FORM B
COMPLETED BY: GALL.ot,aAY, (toKsgo # AsSoc, DATE:-," ZI
I Erosion Control C-Factor P-Factor
1 Method Value Value Comment
----- -------------- -------------- ----- ----------- ---------
I PA Ni:h'nS,1SADEWAUKS o.01 1.0 (NC
IIaAl2-E 501L I jzvUe,4 1.0 _ v,°I ( rss)
SEED/STRAW MUL.Ck O,O(o 1 0 (SM)
I�iru��e� MUL.ci-4 o.os
isEeD/STaAuJ muu*4
--(s-eepSLoPEs)
-----------------------
IMAJORI PS SUB I AREA I
IBASINI (;) IBASINI (Ac) I
CALCULATIONS
i------ I----- I ------ I--------------------------------------------
Ie4,OoI A I0.07 IUSE SE.Eo/-smgAw MUL-e-A IN LAAtaoSGApoA
I*�M = O.O(o AG{L�S
I ILZEl.1RAVEL- MULACH 1►J P, .,VSD AREAS
1 I 1' 'AGm = 0.01 AG 15,5;,
WTD-L= (o.oloXo olo)+(o.ol)(o.os) = 0.0 to
(U.c.?(n +
P= (o.o(o)(I.o)+ (o,oi)(I-O) : 1,00
(0.0coto.01)
coNSTgX vr100 ;
i I I 1-XLballxcAfft ARXAS,
uie, Sc0 lei eAss G=o.oI ptl.o
----- ------- ------ ----------------------------------------------------
DI/SF-B:1989
i
'C-,IEZT T3.3
EFFECTIVENESS CALCULATIONS
-------------------------------------------------
IPRGJECT:T�nn6e/tt.itje Fp,{tN5 Go$.Ne{sTo� po>
I
ICOMPLE-I.D BY:
MAJOR
BASIN
Erosion Control C-Factor P-Factor
Method Value Value
----------------------------------------
PS
I
I
SUB
BASIN
13
I
II
---------------
STANDARD FORM B
I
DATE:JAn1 Z.1, 91�
I
Comment
------------
-------------------------------------------------
AREA
(Ac) I CALCULATIONS
------I------------------------------ ------------
01019 I USE µuw+ ,ti p s�01�ES
Assh - o•o¢ ACW7
ju6E sCZD/sTyw+ MULc� FqL L.AM ncApiNi
j Qgµ= O -13 At-LES
IUSE CGrWeL KU6e44 IN PAvINt1
I Aelm° 0,4P& Afar6
USE BAaZ SOIL. W 1 Ott 010) ENVE.LOFeS
1 Abs' 0,14 Ae4zle$
-c:(:o4)(.14)+(•13)(.oc,)�Gc►$Z(.a1)+( 14)CI.o�,
:d,1Lo
P = i•o4)(I�O1+C.13)Ct.o) }(,14)
b8)C�,o)+C• 14)(0.9) = iC7.�j9
yNy GoNSTjc.uG,T�oa ;
c.oNSrr,U?,T',o a , e
OFF='11 -(o,o I)(I o)] l00%= c1`I I/,
I I I I jqtNOTS: LANPSeAPED /&R.EkS
I I I I I �----- -- --
HDI/SF-B:1989
SHEcr 5,+
EFFECTIVENESS CALCULATIONS
----------------------------------------------------------------------i
PROJECT:Ti05eXL+NE rAI-as pvo STANDARD FORM B j
COMPLETED BY: DATE:..1W Li Pgdi
Erosion Control C-Factor P-Factor
-- Method Value Value Comment
------------ --------------------- -------------------------
MAJORI PS .
BASINI (;)
164.83
SUB I
BASIN!
L I
AREA
(Ac)
O,oB
CALCULATIONS
--------------------------------------------
USE SFaD/ ►- uLc. A foie,. S-meP SLm?,sS
AxM= 0.085
4
POPLti GoNSVAY-iTokl
E ffm �I - (0.14) (I ,o), -I O&Z = 51P V Z S¢.gS
yt 4,p1j6qwzgww �
LANnSco.p:ED AReAS
0sc- SOD c=o.oi P=1,0
U ga.AvE� nUUCt-k w 1PA4JED AR.Es.S
0&4,M=40,01 aGp•ES
Djgig� C4WS-T�LUrnTom ..
� �1- (0-05)(I,02'l0o'/=9S'/ &0.30
APR coca-r��cnonl .
---------------------
DI/SF-B:1989
sNEZT 13.5
EFFECTIVENESS CALCULATIONS
-------------------------------------- --------- ---------------- -------1
PROJECT:7o45E4wkje FARuS (p,eu a(tE fAin STANDARD FORM B j
COMPLETED BY:
Erosion Control C-Factor P-Factor
-Method Value Value
----------- ---------------- -------------
--- -------- --------
MAJORI PS SUB I
BASINI (%) IBASINI
----- 106;S- I os=¢
75,03
-5
AREA
(Ac)-
o, o�
DATE:.1a4 L199to
Comment
------------
------CALCULATIONS
u6E cjap.\/eL MUL-" 110 PAIJOD Aa AS
koz aoc,
An-G = 0,05
,Lm-ps 1,0
)poJct coN-_frp_xrno#.l
'f� LoA15rCQ,�Xoriatil
�O,o ¢ J05SCj9ava- µuLct-( w PAVOD aa-EaS
IA4A= D.o¢
I ILATb-c = o.os
�uR-i►sl� co1Js-c¢txrno�
"fF41 eom6-rWuttoi l
----------------------------------------------------------------------
DI/Sr--B:I989
SHEXT 13 ,(o
-r1"a0LLA0E FA"S CONSTRUCTION SEQUENCE
PROJECT: STANDARD FORM C
CAA u-oWAY , 20 H�Q.o
SEQUENCE. rOR 19 Ella ONLY COMPLETED BY: asSouvrrES DATE: Fn0i4e
Indicate by use of a bar line or symbols when erosion control measures will be installed.
Major modifications to an approved schedule may require submitting a new schedule for
approval by the City Engineer.
YEAR
MONTH
----------------------
OVERLOT GRADING
WIND EROSION CONTROL
Soil Roughing
Perimeter Barrier
Additional Barriers
Vegetative Methods
Soil Sealant
Other
RAINFALL EROSION CONTROL
STRUCTURAL:
Sediment Trap/Basin
Inlet Filters
Straw Barriers
Silt Fence Barriers
Sand Bags
Bare Soil Preparation
Contour Furrows
Terracing
Asphalt/Concrete Paving
Other (Suiuo%Wj coNSTpuctad
VEGETATIVE:
Permanent Seed Planting)
Mulching/Sealant
Temporary Seed Planting)
Sod Installation
Nettings/Mats/Blankets
Other
STRUCTURES: INSTALLED BY
1`96
J I F 1 n 1 A 1
--------------------
NIJIJIAI"to 101NIc
------------------ -------------------
MAINTAINED BY
VEGETATION/MULCHING CONTRACTOR
DATE SUBMITTED APPROVED BY CITY OF FORT COLLINS ON
110I/SF-C:1989
SH EZT 57
P(LOJECT- Tt►APPE(L6.iuE FA(L.AS
OA-rE JAaUoaY z>_ I 1`►q4.
E(toSlotil coNT(Lo� GoST `gT�►tA rE
=�
sti��Ww
PP 2.0 AcR-ES WILL CAE i NtS ?".5cvr.
_�wwoo
WNNN��
�rilY WYi
GITY GQ.iTrc(LIA
(,So /Acge) Z o Ac(t-ES�) I _ 19Sp•00
tee-UJLf DEPOSIT
5
COST 5OZAILDowli
4� 2AJ EL. M U ►-LN
TO0S/NcaC)ll•oAC, (le)(�10/%a�C1,5�=
�Z025.o0
I -FAY 6A�Es
511.T �NLE
-rcr A L_ =
co 135, 00
Arnounrr o5E-"g4-irf 0e OS T V-FA0IR.Ea IS THE C1►2-EA't—t(t_ of
7WOXI.S:
(�1'3S.00 x
I
I
FINAL UTILITY PLAN OF TIMBERLINE FARMS CORNERSTORE, P.U.D.
LEGEND MARCH, 1996
Iall FAmDw STING NTR
O PR ZD CONT01 Ratta
ERNDoF umCN va
` ' a" MCSt LollLolls/SUNSTONE DETENON
—R —' pAvwcc �W PONDr
Q "All
aJ ata cr. da"i /
Nm-irt(i i�Yrei ea del a' 7 /
EROSION CONTROL NOTES: /
GRASS LINED I N. E«NpoN mxTRa tEA9.R2S ARE To K INSTAum s / /I f.R/
SWALE SECTION "A -A" �p«S TGm`OVDx"ECam°"w1°at"uw'�d1iA' "` °n' EaT' ,f/auttl _a
NOT TD scLc ) w WS47 D STVRao AREAS To a YmED Most Y• / / I ° " �n 4
FINALTEMPORARY GaAENCROP GRASSES WIN [fYR[11M T ]et
S
L U xSTLw UD MSTKLr CR
W
ME AKA 70 %M2CT AGAN%T 9R ACNYULADM ,]
x THE EnST«G ttrtnw «01 PD / I I " x �-TI"I
N . SIDUP6 AK E 5ES DRAu S1KIE LwAY S«L BE .., w i
r� / / / I I tasS3Ernov VlEw I
t,=20'
0 10 30 p" / / I (34,4181`wm
/ F on STRAW SALE DIKE
/ / D x cseat of bolrat GENERAL INSTALLATION
COWN
S TM Ran I E_ w �. s vu A ue r r OF F_RL _E3 U uryIDPAOC
/ IAdwA e i
L�Et""wa'«w lsVlu' E 'HeLK'h E D25
JEGETATIMI'l ICDVRXMil? 7ECJES Iti
/ toniF Euvoz
wwro- f IN.. E..ga claw poor : `
OTVE[ io :i s ml t9.L!'O lms'. Maw: vey m.w Poll: ��• r T•
Get
/ I 4a., n oweIto an O o' is orYn L.m4q orne •u r�•�Aw..� aYna'!C
0 an -- A y Wa rK wwta P itiim m n
/ / I ";;w An "crt'wy LMIw .
T UL C Gone, 1
new^ As
In IJ IJI I�1 Iwl I d T4R taw J • v r"in
MILESTONE DRIVE .m. / / I. --._.._....-_._._._.__.__.__..___._......I Y S
/ I
1
I a`
I
Id
1
1
8I a"
IA'
II
—d itd
Of
a' of"
/4F tlMIET cTlw
/A Total a¢r
a• /
/
/
i` ♦o
U / /
Z /
Z
/
a' /d
_ _ _ _ _ _
IL �cSwMAit om
1
Pew
a. � •.91 p3' aM rt w0
L
u 1 q9 `9 •�] `
1
1 . ,
5 4
J..,,
I 0.4.45 GY¢K _
iotNYvM4r.� I it �ruwvlm�xr�'�.�
MWIT'"I 41Y�Yaffn I not ". r.rr •A T. w
II s�u'S: last
Manor
4 6Yt Cm:a CNITR4
list FFilters
to
1 lilt rmann�f Ymtan
I C 'SAmtlor R�ntt•r
INj,AlWhW:4 mnn fnt
rGtAIIY:
haiq/Ytutut
�. KNnrl SxE ftmt
w IKunatuA
orrer
/ -------------------
Ink ft
We
ftw
in
An no
Ilf
i ter.... �.�..� ...r
alRira .ron
/ 4-•s:4:-c Ammort<;7wrr :Dv:zsa "." ..."r_.�— _
w
/
/ yYLC B'
CITY OF FORT COLLINS. COLORADO
UTILITY PLAN APPROVAL
D.ECTm or DnKUKK DAh
DArz
�a
Y Pala •"^'^"oMO �Rtn
DArz
son jwil lAsrsm
wrz
far•«e.astaNat.E
oceans Par
Bn• u
_
aaCrtpx aM
c�cl
A v v A
I
RJl view
%wfIK NCW
wnr.I Notes STRAW SALE DIKE
t. . raW, vtl nw.a..
of rr.Ra...m tHa false arm almost CHANNEL APPLICATION
i, 1A ones MWI y rpyay soon, ti CITv Of wE1T Cowxs. COLORAC.:
m"nw.«w" opato,11 'f gwwe ny STOIiMY,ATER UTILITY
ItM Storm"ater Ullly Em.ron A;%— 4'
Control Inspector. DAT
E.pcxa. D_L
iIat Trench
/Acx. Su"Jv'<Fast
Still.,
weed R_f-� _c.moettd l411iJ1
9Ealow VICN
hrarm Notes
I It's nxl :YOnnY 5 44 lm ."1
to 0 25 acre Far 100 Y,r of tars.,
2 IruputaM wal lace a'v nest
wall, I'mm Rumoll sic —all w
en ro .a p
o W
m.a..ww ar eI f
w,.. or area. IF
SILT FENCE
No o4T[ DEswIPTION I qU'a I 04b I M D 9y
Diamond Shamrock
Ni0 001o�11N mm lKl AWGNNN 111111KAa Halo
TYFp as FAHAB
�LJ°erd'
aoxsf a DRAINAGE AND
M EROSION CONTROL SHEET 4 of 7
M
i
0 1
p =
1 -
Rx
I
All
kill
m
s
I
1
I A }
I
I
I
1
1
I a
I
I
I
I
I Z$
M
`I
to
I 1
I
I Y✓
I
I ,
DiAlK R�
T
�4
tsow
CORNER SEC ]3
Nit 6 X PaAW ]I11R1 IN�PN I: AIX)
d;
wff�
HISTORIC DRAINAGE PLAN OF TIMBERLINE FARMS CORNERSTORE, P.U.D. j
- MARCH, 1996
i
I
23 cfsar
2.52 Cfs MILESTONE DAVE -WA g� ��_ '- _„�.T--
1 1 •°AE
R.15 L=MW0 --
cna•n6a05'39r .. / 0 10 20
18.99
.60 cfs
�)
.. / RA1500'
L-23 N'
_ }
1 \ p10= 0.78 cfs
11 10100= 1 75 cfs
9 Aoi IA
° ed a / F� e; y• s /e• s e' d _i fr d` a' 3;
1
r °N e? ee ed
RR4
w e e. sl
W'
ZI
*Alt P
wpm" OW
' 1
IC
•Alt A
14A. L` r,`9 ow"w OR
1 I 1
9 w w i w
w �,
r 7-T��+� N9955'1CW ° 33183':' --i
1it
,
Ali
1 w w 1
_ .9 wA RP"I w w
w
I w,,IN A WC I
I
1 �
I e iit 1
I
11
1 � ,
1 ,
1 'A ,
I ,
1 ,
1 / I R_ D RmrA � A�YIw
1 I 41 IM
LEGEND
®
EXISTING cMTMR
s xc W07 EU.ARa
At
R INC
B
OESV.'AMx
RIB
WA IN S
Amw
Wl99R9�
%' TOAR D[SCAIPTp! DRAM I pNb PPPIIOVED BY
Diamond Shamrock
.a9 o9faM9Q 9LYLL .AN ANIOO. ,wv 7900
C9NILTANl719ML T►gXff LW FA"
R¢a COFNHSTaw PLD.
;f....j MJF BTOIE No. M2
C++ HISTORIC
9K �,A<s' DRAINAGE PLAN
o°
aA
fi
0
Fe Ag EP ZONING
IvA
•A
e qwm 1
EXISTING MILESTONE DRIVE
(68' PUBLIC R.OW.)
d
m
A
9
r
u 3>
226
j
d
A
3
d
d
8
d
e p IJ AI
e
4 B A•
a e� A+ 6147 A9
17001
aA 4 D
I I
I anD I •�� i
eiz •.9 I m d I �s
IV I
IM
I I
—_-- {
1 010= 0.70 cfs
nbBmx m1 O100= 1.36 cLf
-nam 1 msMAR
x13 1
e
B d d
D mm
I id I d d
R
b1.Y I
II t I A> d'.
I' OW
eI m
i'
Au aim %I .z
R z
i
z d Ai o A' A'
m.s1 I
w '
d f 1 A* le , A,
�r, I I �. i,Alit .
1
63.16 6t 12 � \ I
•.9 a.9 • COO a ' a
1 'p ' • a 6V1 Q
V�i w)
62M
`W `9 PaIY D a • g' la
6322 \ • m.25 al )) • I
M
• aDm AIR s� u 1 m
,9 mw lEft
p9
x ue1• .xeem'1ew au2At • • —
Pt A
bvt 61 Ie
6001 It'®ux ;
w ° bzAl J .9 / • J
62m meI P ZONING • • i • J '`•
d r�— ——
n. _ i _— J•• . _ _
al LEARD
11
mGDANflfi P.,.., 1
_ 1
I
I—" ROW I
(urzR DED"mR)
I
I
I
I
I
e
LEGEND
ExsnRC COKE"
PROPOSED CMWR
EASING SPoT Eliv.MR
EE T ATAR
TV
Ra
ponolm XAR
IT
Top of ASEAD
TOG
TOP Of CRATE
xP
nGx PONT
SALT ERDAID
K)t EEL AML
MY DAUS
EXISTIM CURB
PROPosED CURD
BENCHMARK:
x�µT AT Tx[ HE CORKER OfHARroCACIADPueELIE
RNwe
wWES6152
NOTES:
I TIES PROPERTY D Es ACT IY MxN AWArt9�TEDDFFLOOOD WARD �
CpSW M E RgFl RSURARC[
080102 OCM
x. EVER 10 WE A FOR FMSCx CENTRAL ROTES A•0 DEARS
D
INAGE SUMMARY TABLE
P�ONIT
SIN
AREA
DID
elm
D
Iris)
Kim
(M)
m-1
015
ow
I'm
om
au
ov
022
0m
m
Ds -A
oa)
om
a25
D
om
ou
1m
om
DOE
Im
]6
R Oo�. Rs1WAe � .lsabr
u N•R xgNRNR lw.ay
CITY OF FORT COLLINS. COLORADO
UTILITY PLAN APPROVAL
RRETOR OF E1CNEEMW DATE
NECKED w.
TIRE WATER ARD SEWER Own wrz
NETTED BY '
tW ST0A1 WATER UIYn D. E
NECKED n
RNNs WAD ac1R,A101 arz
W. I DATE DEWMEWx I DRAWN I Cxk'0 I APPRNEO BY
.•.
Diamond Shamrock
TMBERJNE FAFM@
3o ascls. Ilk
COWMTOFE P.UD.
po .` STOFE Net 1152
8045E 1 GRADING, DRMNAGE AND
y 7-1! i@ EROSION CONTROL PLAN SHEET 3 of