HomeMy WebLinkAboutDrainage Reports - 04/21/20081
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Addendum to the Final Drainage and
Erosion Control Study for
Harmony Technology Park
First Filing
Fort Collins, Colorado
Prepared for:
MAV Development
303 Detroit Street, Suite 301
Ann Arbor, Michigan 48104
Prepared by:
Stantec Consulting, Inc.
209 South Meldrum
Fort Collins, Colorado 80521
(970)482-5922
elk
Sta11teC
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Stantec Consulting Inc.
209 South Meldrurn
Fort Collins, CO 80521-2603
Tel: (970) 482-5922
Fax: (970) 482-6368
Stantec
April 17, 2008
Mr. Basil Harridan
City of Fort Collins
Water Utilities--Stormwater
700 Wood Street
Fort Collins, Colorado 80521
RE: Addendum to the Final Drainage and Erosion Control Study for Harmony Technology
Park First Filing
Dear Basil:
' We are pleased to submit to you, for your review and approval, this Addendum to the Final Drainage
and Erosion Control Study for Harmony Technology Park First Filing. All computations within this
study have been completed in compliance with the City of Fort Collins Storm Drainage Design
Criteria.
' We appreciate your time and consideration in reviewing this submittal. Please call if you have any
questions.
L
r
Respectfully,
Stantec
Prepared by:
Brad Kugler
Project Engineer
Anthony G. Willkomm, P.E.
Project Manager
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' ADDENDUM
' FINAL DRAINAGE AND EROSION CONTROL STUDY
FOR HARMONY TECHNOLOGY PARK FIRST FILING
FORT COLLINS, COLORADO
Project Description
The Harmony Road improvements are required as part of the Harmony Technology Park Fourth
Filing project being constructed by MAVDevelopment. Technology Parkway will be constructed
with a signalized intersection at Harmony Road.
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Existing Conditions
Within the project limits Harmony Road is constructed as a four lane arterial roadway. The open
channel, grass lined median provides a drainage path for portions of the crowned road that sheets
runoff to the median. Runoff flows west to east and storm pipe conveys runoff through the
intersection crossing at the proposed Technology Parkway.
A road side open channel ditch collects runoff on the south side of Harmony. Runoff west of
Technology Parkway was designed to enter an existing detention pond in the Intel site (formerly
Celestica). Ditch runoff east of Technology Parkway drains the intersection of Lady Moon Drive
and is piped to an existing storm drainage system flowing south in Lady Moon.
The north side of Harmony Road primarily sheets north to the existing irrigation ditch adjacent to
the road and flows east.
Project Improvements
Construction of the intersection improvements include the addition of a left turn lane in for west
bound traffic, a right turn lane with curb and gutter for east bound traffic, two pedestrian refuge
islands in the median and new curb returns on the Hewlett Packard driveway approach. A new 8'
sidewalk will be constructed from the Harmony House east to Technology parkway.
Drainage Improvements
The existing 18" RCP storm pipe in the median will be extended east and west to accommodate
construction of the pedestrian refuge islands. There is no significant change to the median
drainage area except that the impervious area west of the intersection increased by 0.05 acres.
With the addition of a left turn lane for west bound Harmony Road traffic there is an increase of
0.175 acres in the impervious area that will drain to the median downstream of the intersection.
Therefore, the storm system was simply extended.
Stantec Consulting Inc. 2 April 17, 2008
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With construction of new sidewalk to the south, the ditch flow on the south west corner of
Technology Parkway was piped under the walk and graded to enter the existing detention pond
on the Intel site. This runoff was designed to discharge to the pond with the HTP first filing
design. There is no significant change to the drainage area with this design. However, the peak
runoff calculations have been updated with current IDF information for the Fort Collins area.
Calculations are provided as an attachment to this letter as well as drainage basin mapping.
Runoff from the Harmony Road intersection entering Technology Parkway is addressed in the
Drainage and Erosion Control Study for HTP Fourth Filing by Stantec (2008).
Erosion Control
Temporary and permanent erosion control measures will be implemented prior to construction to
prevent transport of sediment from the construction limits. Erosion control fabric will be
installed on disturbed median slopes and Swale locations. Wattles and straw bale dikes will be
installed in swales. Silt fence will constructed at the Hewlett Packard entry downstream of
construction limits to protect the irrigation ditch. If the area of disturbance is in excess of one
acre the contractor will be responsible for implementation and maintenance of a Storm Water
Management Permit and Plan granted by the Colorado Department of Public Health and
Environment (CDPHE). If groundwater is encountered and discharged an NPDES permit will be
required.
Summary
The construction improvements for Harmony Road will be completed in early spring of 2008.
Storm water revisions to the HTP First Filing include addition of piping roadway drainage under
the proposed walk and grading to allow flow to enter the existing pond as intended in the report.
Peak runoff values are updated to comply with current IDF values provided by the City of Fort
Collins Storm Water Department. Storm pipe in the median will be extended to allow for
construction of new pedestrian refuge islands. Additional impervious area is added to the median
drainage system downstream of the intersection.
Erosion control measures will be implemented to minimize the transport of sediment from the
construction limits.
Stantec Consulting Inc. 3 April 17, 2008
References
1. Storm Drainage Design Criteria and Construction Standards by the City of Fort Collins,
Colorado, May 1984, Revised January 1997.
2. Erosion Control Reference Manual for Construction Sites by the City of Fort Collins,
Colorado, January 1991, Revised January 1997.
3. East Harmony Portion of McClellands Basin 100-Year Master Plan, by Icon Inc., Fort
Collins, Colorado, August 1999.
4. Final Drainage and Project Development Report for Harmony Technology Park First Filing,
Prepared by Sear -Brown, January 23, 1998.
5. The Urban Storm Drainage Criteria Manual (published by the Urban Drainage and Flood
Control District — Denver, Colorado — June 2001).
Stantec Consulting Inc.
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April 17, 2008
No Text
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Existing Weighted Runoff Coefficients
Ham:ary Technology Park SJe
187710640
This sheet calculates the composite "C' values for the Rational Method.
TIME OF CONCENTRATION
10 year design storm
Harmony Technology Park Ste
187710640
1.1470.1
S., .,
C, = too
SUB -BASIN DATA
INITIALOVERLAND TIME
TRAVEL TIME
FINAL
REMARKS
BASIN AREA C
LENGTH
SLOPE
I.
LENGTH CHANNEL-
SLOPE
VELOCITY
It
- t�
NO. (ac)
0)
(%)
(min)
(It) TYPE(a)
t°u)
(h's)
tmin)
(min)
1 2 3
4
5
6
7 8
10
12
13.
OS-4 0.94 0.38
20
1.23
5.6
560 PA
1.8
2.58
3.6
9.2
Note:
a) Codes the channel type for velocity calculations.
PA = Paved PL = Pasture & Lawns, GW = Grassed Waterway
TIME OF CONCENTRATION
100 year design storm
Harmony Technology Park Site
187710640
I87(I.I—C'C ) D
s,031
I,= t;tl
Ct = 1.25
SUB -BASIN DATA
1. --
-� WITIALiOVERLAND TIME
`.
- .
TRAVEL TIME
FINAL
REMARKS
BASIN AREA
-LENGTH
,- SLOPE -
4-
LENGTH CHANNEL
- SLOPE
VELOCITY
t,
4
NO. (ac)
(ft) -
(9,0)
(min)
(ft) TYPE(a) -
(95)
(ft/s)
(min)
(min)
1 2 3
4
5
6
7 8
10
12
13
OS-4 0.94 0.38
20
1.2 - -
4.8
560 PA-
1.8
-2.58
3.6
8.5
Note:
a) Codes the channel type for velocity calculations.
PA = Paved, PL = Pasture & Lawns, GW = Grassed Waterway
Routing Flow Time
mgn Pont Basins 4 Length Type Slope Velocity
Lxnnon lmm) A (a) (11,) (ft's)
ne n 11 nc_n 1 o 1 1 1 1 __
Note:
a) Codes the channel type for velocity calculations.
PA = Paved. PL = Pasture & Lowns. GW = Grassed Waterway
Rational Method
10 Year Design Storm
Harmony Technology Park Site
187710640
Runoff Z Street Pipe
Directer To'tacapacity
F C Intensity Area Runoff Runoff Runoff) Capacity Design Velocity Slope Manning's Roughness SiZe Flow Depth
-- ...., :..�., r% r.�f., o-f�l irfc� lrfs) (WRI ierex i91) "n. (in) (in)
Flow Flow Depth Velocity
Remarks
Rational Method
100 Year Design Storm
Harmony Technology Park Site
187710640
Routing Flow Time (tj Runoff
Street
Pipe
Capacity esgn orma verage
ipe Directer o a
Basins G Length Type Slope Velocity Travel Travel t,. C CCt Intensity Area Runoff Runoff Runoff
Capacity Design Velocity
Slope Manning's Roughness Size Flow Depth Capacity Flow Flow Depth Velocity
Design Point
j Location (min) (ft) (a) (io) (ft's) (min) (min) (min) (in,hr) (ac) (cfs) (cfs) (cfs)
(cfs) ((fs) (ft's)
(%) In,. (in) (in) (cfs) (cfs) (in) (fts)
Remarks
OS-4 I OS-4 1 8.5 1 7-7 0.0 1 18.5 10.3810.481 8.26 10.941 3.73 1 0.00 1 3.73
Note:
a) Codes the channel type for velocity calculations.
PA = Paved. PL = Pasture 8 Lawns, GW = Grassed Waterway
',9 FM
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Project Description
Friction Method
Solve For
Input Data
Roughness Coefficient
Channel Slope
Bottom Width
Discharge
Results
Normal Depth
Flow Area
Wetted Perimeter
Top Width
Critical Depth
Critical Slope
Velocity
Velocity Head
Specific Energy
Froude Number
Flow Type
GVF Input Data
Downstream Depth
Length
Number Of Steps
GVF Output Data
Upstream Depth
Profile Description
Profile Headloss
Downstream Velocity
Upstream Velocity
Normal Depth
Cnhcal Depth
Channel Slope
Cnhcal Slope
40T2008 2.08:34 PM
Worksheet for chase under sidewalk
Manning Formula
Normal Depth
Supercritical
0.013
0.02000 fVft
2,00 ft
3 73 ft-/s
030 ft
0,61 ft'
2.61 ft
2.00 It
0.48 ft
0.00530 Rift
6A3 ft/s
058 ft
089 It
1,96
000 ft
0.00 ft
0
o 00 ft
0.00 It
Infinity ft.s
Infinity fts
0 30 ft
048 ft
002000 ftft
000530 it, It
Bentley Systems, Inc. Haestad Methods Solution Center Bentley FlowMaster [08.01.068. 001
27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA •1.203-755-1666 Page 1 of 1
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Capacity for proposed
18" Storm Pipe
Project Description
Friction Method
Manning Formula
i ..
Solve For
Discharge
'
Input Data
Roughness Coefficient
0.013
'
Channel Slope
0.00350
ft/ft
Normal Depth
1.50
ft
Diameter
1.50
ft
t_
Results
_
Discharge
6.21
ft3/s
'
Flow Area
1.77
ft'
Wetted Perimeter
4.71
ft
'
Top Width
Critical Depth -_
0.00
0.96
ft
ft
-
Percent Full-
100.0
Critical Slope -
0.00633
ft/ft
'
Velocity -2
3.52
ft/s
Velocity Head
0.19
ft
'
Specific Energy
1.69
ft
Froude Number
0.00
Maximum Discharge
6.68
ft3/s
t
Discharge Full
6.21
ft3/s
Slope Full
0.00350
ft/ft
Flow Type
SubCritical
'
GVF Input Data
Downstream Depth
0.00
ft
'
Length
0.00
ft
Number Of Steps
0
GVF Output Data
Upstream Depth
0.00
It
Profile Description
Profile Headloss
0.00
It
Average End Depth Over Rise
0.00
%
'
Normal Depth Over Rise
100.00
%
Downstream Velocity
Infinity
ft/s
Upstream Velocity
Infinity
ft/s
1
Bentley Systems, Inc. Haestad Methods Solution Center Bentley FlowMaster [08.01.069,00]
' 411712008 2:43:47 PM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1.203-755-1666 Page 1 of 2
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Capacity for proposed 18" Storm Pipe
GVF Output Data
Normal Depth 1.56 ft
Critical Depth 0.96 R
Channel Slope 0.00350 f /ft
Critical Slope 0.00633 ft/ft
4/17/2008 2:43:47 PM
Bentley Systems, Inc. Haestad Methods Solution Center Bentley FlowMaster (08.01.068.001
27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-201-755-1666 Page 2 of 2
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EROSION CONTROL COST ESTIMATE,,
Project:
HTP HARMONY ROAD IMPROVEMENTS
18770060
Prepared By:
MBK '
Date:
3/27/200
CITY RESEEDING COST
Unit
Total
Method
Quantity Unit
Cost
Cost
Notes
Reseed/mulch
0.81 ac
$723
$585.63
Subtotal
$586
Contingency
50%
$293
Total
$878
Notes: 1. A<=5 ac=$655/ac; A>5 ac=$615/ac.
EROSION CONTROL MEASURES
Unit
Total
Number Method
Quantity Unit
Cost
Cost
Notes
5 Straw Bale Barrier
3 ea
$150
$450
8 Silt Fence Barrier
144 LF
$3
$432
39 Hay or Straw Dry Mulch (1-5% slope)
0.12 ac
$500
$60
Subtotal
$942
Contingency
50%
$471
Total
$1,413
Total Security
$1,413
Minimum Escrow Amount $1,500
AMOUNT TO BE PAID BY CLIENT $1,500
EROSION CONTROL CONSTRUCTION SEQUENCE
P ,'_1
SEQUENCE FCR .009 A X09 ONLY
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STRUCTURES IRSTQLED BY
VEGETArGW LCMRG CONTRACTOR
CATS GUHMRTED �
APPROVEO BY CITY OF FORT COLLINS ON
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FflUJECi NAMF H1FHamorp RcaGlrcPlo-emenR ---
_ PROJE L l "10 137�' .bJO
FROM STATION:' REACH - - TO STA7IN, PEACH DRAINAGE AREA - - 'DESIGN FREQUENCY- -- - -- -
ffimMULEGBESMIU
C,ha� Peak Flw 4ebctl f A.ea t ydaip Npmd 5C51,I)C55
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SEAR -BROWN
' Harmony Technology Park Harmony Road Improvemnts By: MBK 187700640
Riprap Rundown at 18" Pipe Outlet Checked: AGW
' Updated: 10-Apr-08
Pipe Diameter: D 18 n Soil Type: Erosion Resistant Soil (Clay)
Discharge Q 10 cis Max Velocity: V 7 7 ft/sec
Tailwater: 0.8 ft (known)
' 1. Required riprap type
Q/D2 5 =
D =
3.63
1.50
< 6 --> use design charts
ft
YUD =
0.53
Q/D^1.5 =
5.44
'
d50 =
3.19
in -------> 6 in
> Use Type
VL
(Class 6) nprao
'
2. Expansion Factor:
1/2tanO =
5.63
'
3. Riprap Length:
At = ON =
1 30
ft2
'
L = 1/2tan0 '
(AUYt - D) =
1
ft
4. Governing Limits:
L> 3D 5 ft increase length to 5 ft
L<10D 15 ft=>1It-->OK
5. Maximum Depth:
Depth = 2d50 = 2 (6 in / 12) = 1 ft
6. Bedding:
Use 1 It thick layer of Type II (CDOT Class A) bedding material
7. Riprap Width:
Width = 3D = 3 (18 in /12) = 5 ft
(Extend riprap to minimum of culvert height or normal channel depth.)
Summary:
R
VL (Class 6) riprap 5 ft 1 ft 5 ft
Reterenre UDFCD USOCM. Vol 1. Major Drainage. Page tdD-165
V 528, 71FACTIVE"3'71C64C'CIVIL DESIGN'REPORTS DRAINAGE HTP ROADS EROSION CONTROL 131NSTRMOUTLET XLS
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EXCERPTS FROM
FINAL DRAINAGE AND PROJECT
DEVELOPMENT REPORT
FOR
HARMONY TECHNOLOGY PARK
FIRST FILING
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Job Name:
Harmony Technology Park
Client:
Celestica
Date:
11 /12/97
By:
The Sear Brown Group
Job Number 785-001
File Name:
celestica drainage.dat
OMPOSITE RUNOFF COEFFICIENTS
Basin
#
Area
Imperv.
Pervious
C
I c
Comp.
Percent
(Ac) _
Area (Ac)
Area (Ac)
Imperv.
Pervious
C
Impervious
1
3.77.3.51
0.26
0.95
0.2
0.90
93.10
3
1.97
1.6
0.37
0.95
0.2
0.81
81.22
4
0.52_
0
0.52
0.95
0.2
0.20
0.00
5
18
0
1.8
0.95
0.2
0.20
0.00
6
3.35
1.53
0.95
0.2
0.61
54.33
7
1.34
1.26
0.08
0.95
0.2
0.91
94.03
8
1.41
1.31
0.1
0.95
0.2
0.90
92.91
9
2E
68
2.3
0.38
0.95
0.2
0.84
85.82
10
2.93
0
0.95
0.2
0.95
100.00
11
0
8.07
0.950.2
0.20
0.00
OS-1
0.54
0.91
0.95
0.2
0.48
37.24
6S-2
2.21
1.36
0.85 1
0.95
0.2
0.66
61.54
OS-3
2.31
1.08
1.23
o.95
0.2
0.55
46.75
OS-4
0.94
0.18
0.76
0.95
0.2
0.34
19.15
OS-1=WEST PART OF HARMONY RD,
OS-2=TECHNOLOGY PARKWAY
OS-3=EAST SIDE OF COUNTY RD. 9
OS-4=EAST PART OF HARMONY RD.
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I
I. ALL DISTURBED AREAS ARE TO BE SEEDED
AND MULCHED. INCLUDING REGRADED SLOPES
AND POND AREAS.
3. CONTRACTOR SHALL PROVIDE TEMPORARY
IRRIGATION IN NON -IRRIGATED GRASS SEED
AREAS FOR ESTABLISHMENT OF GRASSES.
1 STOCK PILES NOT TO EXCEED la HIGH SOIL.
4. µL OFFSITE AREAS DISTURBED DURING
CONSTRUCTION ARE TO BE RE VEGETATED
AND RETURNED TO ASIMIIAR CONDITION AS
PRIOR TO CONSTRUCTION
HAY OR STRAW DRY MULCH (1-5%)
[-�
ER0.5KKl CONTROL FABRIC
STRAW SALE CHECK DAM
STRAW BALE INLET FILTER
•y
DIRECPON OF FLOW
SF
SILT FENCE
Tow
TOP OF WADI
CALL UTILITY NOTIFICATION
CENTER OF COLORADO
1-800-922-1987
BROKE YOU U* CRIME OR EM�VATE
FOR THE WRONG OF UNDERGROUNCI
MEMBER ONLITES
City of Fort Collins, Colorado
UTILITY PLAN APPROVAL
APPIRCAUD CNy Engineer Dab
CHECKED BY:
wm.r A wa.b.al.r Ininh Dane
CHECKED BY:
Sbrmealer Utility Dale
CHECKED BY:
Pane a ReareRlian Dote
CHECKED BY:
TrvNk Engineer We
CHECKED BY: Dub —
THESE PUNS HIM: BEEN REWEINED BY THE LOVL
ENTITY FOR CONCEPT ONLY, THE RENEW DOES NOT
IMPLY RUPONSIBIUIY BY THE REVIEWING
DEPARTMENT, THE LOCAL ENTRY ENGINEER. OR THE
LOCAL ENTITY FOR ACCURACY AND CORRECTNESS OF
THE GLLCUUlgNS. FURTHERMORE, THE RENEW DOES
NOT IMPLY THAT QUANTITIES OF ITEMS ON THE PLANS
ARE THE RN4L QUANTITIES REQUIRED. THE RENEW
SHAL NOT BE CONSTRUED IN ANY PWON AS
ACCEPTINCE OF FRANCK KESPONSIBNY BY THE
LOCAL ENITY FOR ADDITIONAL QUPNTNRES OF ITEMS
SHOWN THAT MAY BE REQUIRED DURING THE
CONSTRUCTION PHASE.
2 FA' h e a
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PRELIMINARY
NOT FOR CONSTRUCTION
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ReNeRn SNBA
0 6 0t 18
No Text
N
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SEEDING CHART
2
Recommended Spec,ea and Appiicotim
Rate' at leeax
table 11
tau Temporary Ve9elat'wn and/ar Cover
Crops.
$ea'«(l)
Drilled PwaalAcn
Species
Annul RAVOSS
Cod
20
TO
(bra
Cod
CodCod
AD
Cooled Rp
AO
Meut - Sprier
Cod
60
Meay - Spring
CSy
BaHeY
JO
Millet
N<6rN Sud«
Worm
10
Spgllum
Cad Ieman goal,"+ mane thew motor Towth OF the CNNIq. WMm •eas« Poem mass
then major growth N late IPf" and summer Rae 11 a Nenli6el PIN q dotal td
pwmnp and to Wp Y/corer CrOO yaasea
TWO ttd. pl«tMa
Dot" For Pw•anid and
Temporav/Col,
Crop GrasSeS
PERENNIAL
SEMPCRWY/COMER
DAM
GJRAWS
I GRASSES
Wym GDd
warm .Cad
ANSI 01 - Toze
n Yes
No
No
No
Y«
May 01 - MI!
Ye' Yee
No
Yes
No
May 16 - Malay
Yes
No No
N0
1
al - yl n
No Yes
No
Ye'
Au 01 - Auq 31
No No
No
Yx
Sea 01 - Sony 30
Yes Yes
No
No
FF 31
W 01 - OFF
Oct
chdl 6e used
to 111 a establishment
of eo9etalion. One or Mae of the
Mulchnq
deomrn9 mulches one
6e used with a perenn,
d/and ryas feed mixture
Ow a
temporary re9etatwn Of
color craft.
Mcptcale Applicdlan Rate
Mulch unit 1 Use
SirON Or NOSE Jan 01 - Dec 31 I ImA/acre
Npr.wn (e0od a popes) MM IS - way Is 2 DM+/oCre
EroN« c«Ird (mats Or 61«naU) bI 01 - DEC Jl Not coo-cwo
May be Strife mulch aha De free of np ,au• wee Rod at least 50% of Me r AF
ale 10 ,oche+ Or more 0 length Men Seedm9 ern "ties gn+ses nay From a native
705, W a wg9eSKd mulch" mOWNW. if OmilO le
If iMelotbn i5 used, hydraulic mulches may Be applied hot March 15 through Seplem6W JO
May Or Straw MOCK
I May or straw mulch wA be MChaN to the Coll by «e M
the fwo,eg methods.
(a) A ermpw whrh wA crime tow fiber fall Tchm Or
more It the saw At least 50% 00 the ist
Volt 6e 10 manes nor MMa A Nngrh
(by uarvf«wr" mulch At"Inq mfpnbN ow ire Nsy -
w 5trn, MCCIAMnq to ma ulaclurer5 M vCI,=
(c) T«Nihwl 5rnpd1 the Imd,h to the
manufacturer Ir wnmanaa4pl.
j. All WON M hay m 1 6A Arest Of noxious floods_
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ELEVATION +
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MM WAIEII O SEEAQ 6£IAlR1R • AOWi lNI1! t
a WA•nu dr
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POND B
IMMUNE FRa • OA eadl
VMw PRO • OM WR
100 YEW WAT91 t AM EL£/Allllll • Aow.ap
DMeaWe U aN
6 WAY 6 AD(M • EOt
RETENTION POND A
TOYEW 1EIFMILN IMMUNE mE • 9t RN
1 a AO YEAR RETFMIOM VML • a1 eel+
Yaw PRD - aW e
1U0 YEW WATER 9UWAM M£2AT . •Mai
STANDARD EROSION CONTROL CONSTRUCTION PLAN NOTES
ShoM✓. wOf u ,n F Call AMMeemm m6 uu Cmvu moody Ma Me rocaM m Lit 2e
AM rtg pF ew at Mc 9 W NM mot Allow to mI kM JfIrvN m t M Ff,d,e
(n01 aLou� enq.nyaw : III ~ mu walm atend mm
na • . e n vela a Psmat ; noealN F M, ao ,a At
,C1VyM CmmrvC,m pan. Now red-
Pre-emiNme, Mdw,. .eg AM FCm M Amme d Mw Mwe.w alew oI •aelim
er, en.�aME yae
m wd Inlet to ore:ms mm:Inle ve,I
teal, me IN I bl Maem Pot N tea.
hem a nP pony Lap g tome ¢II./tY Ist r m V^ene u(NP F•Ida,me ma°pM
m^m<) a.wPmw cwMea Apy,W"M e, "`Vw OF'ale'tt"',Sea
tlI
mI mD be w lot OF wmm ,wv L 'wait" Me Sao
1PC le MAN If OF ad IF "Pat b Lot" MOMS" ..+ I.:pi a H'IuwemFc
(1o) 4 watesaur IH when LRMFw oM PP the Stdm.al Wl Fear
M ytgly M b v,weP mp manlaFn tlN lLlma m.meo cmn ptY wMRM w m to
ymmwl eeM-C w,N woo N mo aM nq¢,.Min N! a Ins ilitMlt AuWtYw
w aryl, rat vmww, aawmnW b , c , an,
Eno wm Depwlmmwolm
AN art Olw,lwarw n a MdI'mulia a, rgaeee u �• a
veren MY ma6r n a mmnmMum w a not la own mar rdwinto e
wy d y
an w Yes a,e-a Ins (10) ueI m "Not 0 vase t«Loon ei u P,awta noon
ESI FetM :w't �Y Aa,e Illa"I..dy wd ow-n. "t mom At, ,w paean
a III ed b eelee me men W
Coy NeF , wean. M tiro � ow a V" a wH M *y Mop mle
COY.« uo Psi a,e""I MY Ma, I e W mw.e yew
Coo AIDES o, nW by ng o oeN to.
D ANE MET
(�APPR�OL 3 ER a/.) V
J CMNE E
( P X. 1/2- . 1WE ) 0.aX
OYNe ROOD STUD
:1,:
aIAVEL RTER
` WE SatEEN
PLAN VIEW
OVENRDN RTERED WATER
VIAt2vw'
E:rs
E IrvLETWSW: SCREEN
SECTION
ffMRAL NOTES:
1, INSPECT AND REPAR FILTERS AFTER EACH STDRM EVENT.
REMOVE SEDIMENT WHEN ONE I Or ME FILTER DEPTH
HAS BEEN FAUD. REWWD SEDIMENT yIALL BE DEPOSITED
IN W AREA TRIBUTARY TO A YOLl BASIN CA OTHER
LNTERING MEASURE.
2, SEDEENT AND GRAM). SMALL BE I ENATELY REMOWD
FROM TRAVELED WAY OF ROADS
EROSION CONTROL CURB INLET GRAVEL FILTER -
STRAW BALES STAINED
WITH TBD STAKES
PER BALE 1'RK
PONT A MUST BE
H PIER MAIN
A POW ER B A
S7 ATd'
SECTION
few
PLAN VIEW
�I PROFILE VIEW
GENERAL NOBS:
1, NSPECI, REPAIR, AMIDREPLACE. OF NECESSWY)
THE RhRS AFTEA EACH STORM EMENT
2• Ai BALES WSJ WE Ya1MS UNI APPARODAFTER 12 M IS ORIENTED BY
THE ENGINEEMG DIM" FOR LONGER USE.
EROSION BALE CHECK DAM
NPTES PERMIT
NOTE&
9rz
asaerlol J.
elM's ra sTOMw"RA vquunw vRrcN1Iw'.
D
ca�.<w w<,F
m
a 5,, uli I My cmva 4111, i $,a.w III IVY
VON ity M E
. aw, eI eau ,m
l V,w.m
a
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'n Pw:.W Dn
el, we Sale Pro'.eo1
>.
M prase a<SAV, eo am-" F MESEMMI
D.w,d WMI'eddy moi w Vt
NIMMI OF
,y a,
dV we wANIS
Ire: «. o, of and
w, ,. , en,
<
Me W Ilx.Not at z.n .y.. aw De
W very
Y1- a 'c
ng •,by-Ilmi Maw
a
.
W
m^md
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diFild
y,�m
081 Vw <m, <,ImIw Me Its1,09 M Y<Mal.
I'll Oitte e
UMillp 2a, mo<wo ak4 AM DWdmYnr1ddroh,r
At wal
"�`HIMI'm
xanew m, city m r>, I m. meal, n he
am 11in.:.. a.psi
"little e I.O . M
mwA wd,w.0 a vPKtM to "OF M we "ill
m +M aem now
m WPM
wrimi arn1, lMy er,pn gedw
w,IN ma pawl
In. ~Y <am11, If Iwo F M Filter w
%t wft I", "<u^.ny
nor
ewtm "Felt lobo c st =n\m. , SRO <Wsmw a
MIAL SIANVLAnw AND FLAW-nnV STg WAn* MkNA2YLnY.
a Set cwl1dmnpl um VWw arm
rod >9n
N
Nn ~ ww w p tea ,aIN<n " Ircaa nor M
"?W a
to t P wen ,ww
cards <w
OF 5
nor-, b< b wen by vFa, we
to
OMn
„ b ill VM au to. Ow love Veto
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of
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woo ase mw„
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M% Weard " Vtvw Gave Aim,
tu
dla-M,a IEVMVFWn•lw -
�!a°
SGI n " the Of, GrantPart, NI.e
.F J1mw,Y, w^Y MY
m
AM r9 el, MFA C
Nw Nirw
OFF IF ar nit o'�I'rli,et
c•oe fi
:•n� ' DIMIr
r 11 Old a.-v a md� oath. cwn•FLa
-arm n ae aw
Me CI GO M,dro Pow LOSS
v a�,"a
,,10M him Ill MmuaM v1 • ea• Sol
Med NAY a s•ttw •.
'all
N cN uo YAM1wANn..
Famit h en ad eNewd Sell
n W art• 1,
n Sa„an- m Twa, was
x
Le a &III" [mFY war.
Cm LOKIM 0 Me Cw5 yMF Pau 't
o
nrz
6d,Nn
D®nx�s = a•ana
1�- tip. Ealar
gOWef Mi M
b StlaOw
NUAILA��< A n
DlIM� p_. %10 aN
Yam- ry ii, two '• a eel
P fJepl,R
DITCH SECTION
1
M
OKRLOT GRADING
MIND ER040N CONTROL
54 Raurenvl9
PwmeW Borrow
Add,thi BW.IOs
vegelaum Metopes
SN Swdant
Other
RANEALL EROSION CCNaO
51RUCMRAL
Sediment Tr«/9mpr-F
Inlet Euless
Sir" Barriers
Set Fence ed"Fem
Seed Boge
Sae Soil PreOaali«
ce tr , Furrav
vlf
Aspmdl/C«enle Pose
O MAR-GmM At
IEIGETAnME
Permmwt Sew Plant,
Mulchoi/Sedant
Tempwr y Seed Nan.
Sed mlalotM
NeFFHF ,,II/aannel
OUW
CONSTRUCTION SEOUENCE
M
AN
19"
AI FI AS ISI JI 3I AI S01 NID
Old A
9
q
I
rug
l
STRUCIURES. INSTALLED BY MANIAwID BY
AGETATIMNULCMING CONTRACTOR
DATE SGMyETF AMOWD BY OTY OF PORT rot a2
aWa an La t vy ON
DEC
-am
BI & 0.7dr.Tva e 4M eY
11
DETCH SECTION
a
CALL OyAyEV NOT ATIOM
CENTER OF MORADO
1-800-922-1987
an 534-6700W
mm N ONa:-~<E
M :� OF
nl pal a
City of Port Collins, Colorado
UTDATT PLANAPPROVAL
APPROVlb1JMM�1. _ '!1
G del
NW
n• _.red
2I
WSWDEDt®
EeW a ReAe.e
NM
Otm re
Amp.etw tIAY
uwof
aCUtm M
hTb , ReaeAllm
O�IA
Gets
PROJECT Np
785-001
MAMO was
4 Fie 37
Ci-