HomeMy WebLinkAboutSite Certifications - 08/30/2018Page 1
Lot 1, Legacy Auto
07/10/2018
B1704822
Yes
Yes
Yes
Yes
Yes
Yes
Accepted 8/30/2018 WL
Page 2
o
o
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Scour Stop Pad
Page 3
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Page 4
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
/1 Page 5
N/A
N/A
N/A
N/A
Page 6
N/A
N/A
Yes
Yes
Page 7
N/A
Yes
N/A
Yes
Yes
N/A
Yes
Yes
Yes
Yes
/15 Page 1
DURING CONSTRUCTION INSPECTION CHECKLIST
To be completed by Construction Superintendent
This checklist is to be completed during construction and included with the Overall Site and Drainage Certification. x Use “Yes” for items completed as described.x Use “N/A” for items that are not applicable to the site being certified.x If any blanks are “No,” attach an explanation referencing the item number below.
I. Compaction
A. All berms and embankments meet the compaction requirements as specified in the project geotechnical report or comply with the
City’s standard, which is “soils should be compacted within a moisture content range of 2% below to 2% above optimum moisture content
and compacted to 95% of the Maximum Standard Proctor Density (ASTM D698).” Compaction requires verification during construction.
Provide testing log from contractor/engineer.
II. Storm Drain Pipe Installation Requirements
A. The pipe trenches have been compacted in accordance with Section 02225-3.07.A.1. of the Fort Collins Development Construction
Standards (e.g., the trenches in the roadways are to be 95% of maximum density and all other areas are to be at 90%, both in accordance
with ASTM D698).
III.Riprap - FCSCM Vol.1, Ch.7, Sec.4.4.4.3
A. The riprap bedding is a granular bedding of the gradation and thickness indicated on the approved construction plans.
B. A filter fabric was installed instead of granular bedding and is the material shown on the approved construction plans or was an
approved equal. Provide documentation for an approved equal.
C. The riprap is the gradation shown on the approved construction plans with a D50 of .
D. The riprap thickness is as shown on the approved construction plans and extends to the horizontal limits shown.
E. The riprap is buried to the depth indicated on the approved construction plans. (A minimum of 6 inches of soil is required.)
IV.Permanent Erosion Control Fabric - FCSCM Vol.1, Ch.7
A. All fabric was installed per manufacturer’s specifications.
V.Certification of Other Permanent BMPs - FCSCM Vol.2, Ch.8, Sec.2 & FCSCM Vol.2, Ch.12
A. All cut-off walls have been installed in accordance with the approved construction plans. (Cut-off walls are required for irrigation
ditch crossings of storm drain pipes and at the end of flared end sections.)
Yes
Yes
N/A
N/A
N/A
N/A
N/A
Yes
N/A
/15 Page 2
Permeable Interlocking Concrete Pavers
Item/Activity Yes No N/A Documentation/Submittal Requirements
Excavation
Post-excavation infiltration rates are consistent with design
infiltration capacity (for “full or partial infiltration” designs)
Impermeable Liner
Impermeable liner meets design specifications
Impermeable liner attached to concrete perimeter wall
Impermeable liner is not exposed
Any penetrations of the impermeable liner have been sealed
and checked for water-tightness.
Concrete Cut-Off Wall
Meets specifications for:
- Dimensions
- Reinforcement
- Footings
Underdrain System
Underdrain pipe is per design specifications
At least one cleanout is provided per underdrain lateral
Cleanout pipe is not perforated
Cleanout covers are installed and watertight
Underdrain is NOT wrapped in geotextile fabric
Underdrain orifice plate installed at outlet structure
Underdrain integrity tested after backfilling using TV and/or
water test
Aggregate
Base coarse (e.g., #2/4) has 90% fractured faces
Bedding coarse (e.g., #89) is thoroughly washed
Sub-base materials are installed and compacted according to
manufacturer’s specifications
Protection During Construction
PICP area is protected from construction site sediment,
including runoff from the upstream catchment and
construction equipment traffic
Close Out
Upstream catchment is stabilized prior to diverting runoff
into PICP system
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
/15 Page 3
Bioretention Cells
Item/Activity Yes No N/A Documentation/Submittal Requirements
Excavation
Heavy equipment did not travel over bioretention cell during
excavation
Bottom of cell was “ripped” after excavation Photograph before/after “ripping”
Bottom of cell is flat and level Photograph
Excavated area is protected/surrounded by sediment/runoff
control BMPs during construction
Photograph
Inlet
Overflow inlet elevation is set above bioretention media per
plan (typically 12 inches)
Overflow inlet invert elevation is at least 3 inches below
containment wall/berm (to direct overflow into inlet)
Measure/record distance between inlet and top of
containment wall/berm
Upstream catchment drains to inlet
Forebay
Forebay is installed according to design specifications
Forebay has flat, concrete bottom
Outlet Structure/Overflow
Outlet structure/overflow elevation is confirmed Measure/record distance from overflow to top of media
filter
Impermeable Liner
Impermeable liner meets design specifications
Impermeable liner attached to concrete perimeter wall
Impermeable liner is not exposed
Underdrain System
Underdrain pipe is per design specifications
At least one cleanout is provided per underdrain lateral
Cleanout pipe is not perforated
Cleanout covers are installed and watertight
Underdrain is NOT wrapped in geotextile fabric
Underdrain orifice plate installed at outlet structure
Underdrain integrity tested after backfilling using TV and/or
water test
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
/15 Page 4
Filter Media
Filter media composition is per design specifications
Filter media was “machine mixed” by supplier prior to delivery
Filter media installed flat and level
Other Structural Components
Containment wall/berm is continuous and level
Landscaping
Final landscaping does NOT include sod
Final landscaping (wood/rock mulch) is flat and level
Vegetation is planted according to landscape design
specifications
Verify that weed barrier is not installed
Temporary irrigation installed If N/A, then verify that permanent irrigation is installed to
establish/maintain vegetation
Close Out
Upstream catchment stabilized prior to diverting runoff into
bioretention cell
Signature:
Name:
Title:
Email:
Phone:
Company:
Address:
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
Adam Yee
Sr Project Manager
ayee@evergreen-ind.com
208-869-8292
Evergreen Industrial, Ltd
206 E 4th Street Suite 210
Loveland, CO 80537
11582 Colony Row, Broomfield, Colorado 80021
Phone: 720-259-0965
Fax: 720-259-1519
“This report (plan) for the Phase III drainage and water quality design for Lot 1, Legacy Auto
was prepared by me (or under my direct supervision) in accordance with the provisions of the
City of Fort Collins Stormwater Criteria Manual and was designed to comply with the provisions
thereof. I understand that the City of Fort Collins does not and will not assume liability for
drainage facilities designed by others.”
_______________________________________________
Registered Professional Engineer
State of Colorado No. 30325
Date: July 12, 2018
Wohnrade Civil Engineers, Inc.
Stormwater Facility Name:
Facility Location & Jurisdiction:
User Input: Watershed Characteristics User Defined User Defined User Defined User Defined
Watershed Slope =0.028 ft/ft Stage [ft] Area [ft^2] Stage [ft] Discharge [cfs]
Watershed Length =366 ft 0.00 6 0.00 0.05
Watershed Area = 3.28 acres 0.50 9,775 0.50 0.29
Watershed Imperviousness = 43.0%percent 1.00 14,536 1.00 0.41
Percentage Hydrologic Soil Group A = 0.0%percent 1.50 16,175 1.50 0.51
Percentage Hydrologic Soil Group B = 0.0%percent 2.00 17,503 2.00 1.08
Percentage Hydrologic Soil Groups C/D = 100.0%percent 2.50 19,041 2.50 7.93
User Input 17
WQCV Treatment Method = 40.00 hours
After completing and printing this worksheet to a pdf, go to:
https://maperture.digitaldataservices.com/gvh/?viewer=cswdif
create a new stormwater facility, and
attach the pdf of this worksheet to that record.
Routed Hydrograph Results
Design Storm Return Period =WQCV 2 Year 5 Year 10 Year 50 Year 100 Year
One-Hour Rainfall Depth =0.74 0.87 1.16 1.47 2.47 3.02 in
Calculated Runoff Volume =0.051 0.090 0.146 0.209 0.475 0.636 acre-ft
OPTIONAL Override Runoff Volume =acre-ft
Inflow Hydrograph Volume =0.050 0.090 0.145 0.209 0.475 0.635 acre-ft
Time to Drain 97% of Inflow Volume =3.6 5.0 6.7 8.4 14.2 15.8 hours
Time to Drain 99% of Inflow Volume =3.7 5.2 7.0 8.9 15.0 16.7 hours
Maximum Ponding Depth =0.38 0.54 0.73 0.92 1.61 1.96 ft
Maximum Ponded Area =0.17 0.23 0.27 0.32 0.38 0.40 acres
Maximum Volume Stored =0.033 0.065 0.113 0.170 0.413 0.548 acre-ft
Location for 1-hr Rainfall Depths (use dropdown):
Workbook Protected Worksheet Protected
Stormwater Detention and Infiltration Design Data Sheet
Legacy Auto Detention Pond 1
1845 N. College Avenue, Fort Collins, Colorado
SDI_Design_Data_v1.08.xlsm, Design Data 7/12/2018, 9:41 AM
WQCV_Trigger = 1
RunOnce= 1
CountA=1
Draintime Coeff=1.0
0 1 2 3
#N/A
#N/A
0 1 2 3
#N/A
#N/A
Check Data Set 1 Check Data Set 1
Area
Discharge
Stormwater Detention and Infiltration Design Data Sheet
0
2
4
6
8
10
12
14
16
0.1 1 10
FL
O
W
[
c
f
s
]
TIME [hr]
100YR IN
100YR OUT
50YR IN
50YR OUT
10YR IN
10YR OUT
5YR IN
5YR OUT
2YR IN
2YR OUT
WQCV IN
WQCV OUT
0
0.5
1
1.5
2
2.5
0.1 1 10 100
PO
N
D
I
N
G
D
E
P
T
H
[
f
t
]
DRAIN TIME [hr]
100YR
50YR
10YR
5YR
2YR
WQCV
SDI_Design_Data_v1.08.xlsm, Design Data 7/12/2018, 9:41 AM
Thursday,
July
12,
2018
at
10:16:09
AM
Mountain
Daylight
Time
Page
1
of
1
Subject:Stormwater
Deten,on
and
Infiltra,on
Facility
-‐
Legacy
Auto
Deten,on
Pond
1
Date:Thursday,
July
12,
2018
at
9:46:26
AM
Mountain
Daylight
Time
From:mailer@digitaldataservices.com
<mailer@digitaldataservices.com>
To:mary@wcecivil.com
<mary@wcecivil.com>
Thank
you
for
submitting
to
the
Colorado
Stormwater
Detention
and
In:iltration
database.
Your
facility
has
been
recorded
and
the
local
jurisdiction
has
been
noti:ied.
Facility
ID:SWDF-‐20180712084619
Name:Legacy
Auto
Detention
Pond
1
Division:South
Platte
Jurisdiction:FortCollins
Design
Storm:100-‐Year
Water
Surface
Acres:0.44
Edit
Key:33bb28df06408fc009965b33b98c7f1b
If
you
wish
to
edit
the
facility
in
the
future,
you
will
need
the
Edit
Key
listed
above.
If
you
lose
the
key,
you
will
not
be
able
to
edit
the
facility
information
in
the
future.
Project:
Date:
Sheets
11
5
8
2
C
o
l
o
n
y
R
o
w
Br
o
o
m
f
i
e
l
d
,
C
o
l
o
r
a
d
o
8
0
0
2
1
Ph
o
n
e
:
(
7
2
0
)
2
5
9
-
0
9
6
5
Fa
x
:
(
7
2
0
)
2
5
9
-
1
5
1
9
No
.
Re
v
i
s
i
o
n
s
:
By
:
Da
t
e
:
WO
H
N
R
A
D
E
C
I
V
I
L
E
N
G
I
N
E
E
R
S
,
I
N
C
.
LEG: 1707.00
8/30/17
14
Scale:
Designed By:
Reviewed By:
Sheet
1"=20'
MBW
YSG
7
1
AD
J
U
S
T
G
R
A
D
E
S
@
E
X
.
C
O
L
U
M
N
MB
W
5/2
/
1
8
Scale:
Designed By:
Reviewed By:
Sheet
1"=20'
MBW
YSG
5
1
FIR
E
H
Y
D
R
A
N
T
C
O
N
N
E
C
T
I
O
N
JD
M
04
/
2
4
/
1
8
Project:
Date:
Sheets
11
5
8
2
C
o
l
o
n
y
R
o
w
Br
o
o
m
f
i
e
l
d
,
C
o
l
o
r
a
d
o
8
0
0
2
1
Ph
o
n
e
:
(
7
2
0
)
2
5
9
-
0
9
6
5
Fa
x
:
(
7
2
0
)
2
5
9
-
1
5
1
9
No
.
Re
v
i
s
i
o
n
s
:
By
:
Da
t
e
:
WO
H
N
R
A
D
E
C
I
V
I
L
E
N
G
I
N
E
E
R
S
,
I
N
C
.
LEG: 1707.00
8/30/17
14
Project:
Date:
Sheets
11
5
8
2
C
o
l
o
n
y
R
o
w
Br
o
o
m
f
i
e
l
d
,
C
o
l
o
r
a
d
o
8
0
0
2
1
Ph
o
n
e
:
(
7
2
0
)
2
5
9
-
0
9
6
5
Fa
x
:
(
7
2
0
)
2
5
9
-
1
5
1
9
No
.
Re
v
i
s
i
o
n
s
:
By
:
Da
t
e
:
WO
H
N
R
A
D
E
C
I
V
I
L
E
N
G
I
N
E
E
R
S
,
I
N
C
.
LEG: 1707.00
8/30/17
14
Scale:
Designed By:
Reviewed By:
Sheet
1"=20'H, 1"=5'V
MBW
YSG
8
Project:
Date:
Sheets
11
5
8
2
C
o
l
o
n
y
R
o
w
Br
o
o
m
f
i
e
l
d
,
C
o
l
o
r
a
d
o
8
0
0
2
1
Ph
o
n
e
:
(
7
2
0
)
2
5
9
-
0
9
6
5
Fa
x
:
(
7
2
0
)
2
5
9
-
1
5
1
9
No
.
Re
v
i
s
i
o
n
s
:
By
:
Da
t
e
:
WO
H
N
R
A
D
E
C
I
V
I
L
E
N
G
I
N
E
E
R
S
,
I
N
C
.
LEG: 1707.00
8/30/17
14
Scale:
Designed By:
Reviewed By:
Sheet
N.A.
YSG
MBW
12
VALLEY PAN DETAILSPOND OVERFLOW WEIR
CURB TAPER DETAILCONCRETE CURB EDGE DETAIL
18" VERTICAL CURB AND GUTTER DETAIL
Project:
Date:
Sheets
11
5
8
2
C
o
l
o
n
y
R
o
w
Br
o
o
m
f
i
e
l
d
,
C
o
l
o
r
a
d
o
8
0
0
2
1
Ph
o
n
e
:
(
7
2
0
)
2
5
9
-
0
9
6
5
Fa
x
:
(
7
2
0
)
2
5
9
-
1
5
1
9
No
.
Re
v
i
s
i
o
n
s
:
By
:
Da
t
e
:
WO
H
N
R
A
D
E
C
I
V
I
L
E
N
G
I
N
E
E
R
S
,
I
N
C
.
LEG: 1707.00
8/30/17
14
Scale:
Designed By:
Reviewed By:
Sheet
N.A.
YSG
MBW
14
CC
A
A
B
B
SECTION C-C
SECTION A-A SECTION B-B
WELL SCREEN FLOW CONTROL PLATE
PLAN
GENERAL NOTES
SECTION D-D
D
D
A A
ABBREVIATIONS
LEGEND