HomeMy WebLinkAboutSite Certifications - 06/23/2016/15 Page 1
Wes Lamarque6/23/2016
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FL=4895.76
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18.90 LF 8"
PVC @ 0.74%
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STORM "A" STA: 0+05.00 THRU 0+65.00
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Pipe - (1)
49 LF OF 12" RCP
@ 0.24% GRADE.
00 20' 40'10'
1"=20'
FOR BURIED UTILITY INFORMATION
(OR 1-800-922-1987)
UTILITY NOTIFICATION
CENTER OF COLORADO (UNCC)
WWW.UNCC.ORG
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CITY OF FORT COLLINS, COLORADO
UTILITY PLAN APPROVAL
IE = 4895.76IE = 4895.92
54.61 LF 12" RCP @ 0.29%
Project:
Basin ID:
Design Information (Input):
Width of Basin Bottom, W =ft Right Triangle OR…
Length of Basin Bottom, L =ft Isosceles Triangle OR…
Dam Side-slope (H:V), Zd =ft/ft Rectangle OR…
Circle / Ellipse OR…
Irregular (Use Overide values in cells G32:G52)
MINOR MAJOR
Storage Requirement from Sheet 'Modified FAA': 0.02 0.12 acre-ft.
Stage-Storage Relationship:Storage Requirement from Sheet 'Hydrograph': acre-ft.
Storage Requirement from Sheet 'Full-Spectrum': acre-ft.
Labels Water Side Basin Basin Surface Surface Volume Surface Volume Target Volumes
for WQCV, Minor,Surface Slope Width at Length at Area at Area at Below Area at Below for WQCV, Minor,
& Major Storage Elevation (H:V)Stage Stage Stage Stage Stage Stage Stage & Major Storage
Stages ft ft/ft ft ft ft2 ft2 User ft3 acres acre-ft Volumes
(input)(input)Below El.(output)(output)(output)Overide (output)(output)(output)(for goal seek)
95.78 (input)0 0 0.000 0.000
96.00 0.00 0.00 1,711 188 0.039 0.004
96.17 0.00 0.00 2,445 544 0.056 0.012 WQCV = 96.17
96.25 0.00 0.00 2,784 750 0.064 0.017
96.50 0.00 0.00 4,078 1,608 0.094 0.037
96.75 0.00 0.00 4,909 2,731 0.113 0.0627
97.00 0.00 0.00 5,560 4,040 0.128 0.093
97.25 0.00 0.00 6,305 5,523 0.145 0.127 100-YR
97.26 0.00 0.00 6,337 5,586 0.145 0.128
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STAGE-STORAGE SIZING FOR DETENTION BASINS
Urban Box-Storage
Check Basin Shape
LID Reduced Developed 100-Year
100-Year Developed UD-Detention_v2.33_USEME.xls, Basin 3/29/2016, 12:58 PM
Project:
Basin ID:
STAGE-STORAGE SIZING FOR DETENTION BASINS
10.28
20.28
30.28
40.28
50.28
60.28
70.28
80.28
90.28
100.28
110.28
0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14
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Storage (acre-feet)
STAGE-STORAGE CURVE FOR THE POND
100-Year Developed UD-Detention_v2.33_USEME.xls, Basin 3/29/2016, 12:58 PM
Project:
Basin ID:
Design Information (Input):
Width of Basin Bottom, W =ft Right Triangle OR…
Length of Basin Bottom, L =ft Isosceles Triangle OR…
Dam Side-slope (H:V), Zd =ft/ft Rectangle OR…
Circle / Ellipse OR…
Irregular (Use Overide values in cells G32:G52)
MINOR MAJOR
Storage Requirement from Sheet 'Modified FAA': 0.02 0.12 acre-ft.
Stage-Storage Relationship:Storage Requirement from Sheet 'Hydrograph': acre-ft.
Storage Requirement from Sheet 'Full-Spectrum': acre-ft.
Labels Water Side Basin Basin Surface Surface Volume Surface Volume Target Volumes
for WQCV, Minor,Surface Slope Width at Length at Area at Area at Below Area at Below for WQCV, Minor,
& Major Storage Elevation (H:V)Stage Stage Stage Stage Stage Stage Stage & Major Storage
Stages ft ft/ft ft ft ft2 ft2 User ft3 acres acre-ft Volumes
(input)(input)Below El.(output)(output)(output)Overide (output)(output)(output)(for goal seek)
95.65 (input)0 0 0.000 0.000
95.75 0.00 0.00 1,105 55 0.025 0.001
96.00 0.00 0.00 2,097 455 0.048 0.010 WQCV = 96.17
96.25 0.00 0.00 2,864 1,076 0.066 0.025
96.50 0.00 0.00 3,735 1,901 0.086 0.044
96.75 0.00 0.00 4,404 2,918 0.101 0.0670
97.00 0.00 0.00 5,079 4,103 0.117 0.094
97.25 0.00 0.00 5,866 5,471 0.135 0.126
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STAGE-STORAGE SIZING FOR DETENTION BASINS
Urban Box-Storage
Check Basin Shape
LID Reduced Developed 100-Year
100-Year As-Built UD-Detention_v2..xls, Basin 3/29/2016, 12:57 PM
Project:
Basin ID:
STAGE-STORAGE SIZING FOR DETENTION BASINS
10.28
20.28
30.28
40.28
50.28
60.28
70.28
80.28
90.28
100.28
110.28
0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14
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Storage (acre-feet)
STAGE-STORAGE CURVE FOR THE POND
100-Year As-Built UD-Detention_v2..xls, Basin 3/29/2016, 12:57 PM
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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.
•Use “Yes” for items completed as described.
•Use “N/A” for items that are not applicable to the site being certified.
•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.)
N/A
Yes
N/A
N/A
N/A
N/A
N/A
N/A
N/A
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Permeable Interlocking Concrete Pavers
Post-excavation infiltration rates are consistent with design
infiltration capacity (for “full or partial infiltration” designs)
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.
Meets specifications for:
-Dimensions
-Reinforcement
-Footings
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
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
PICP area is protected from construction site sediment,
including runoff from the upstream catchment and
Close Out
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Bioretention Cells
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
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 is installed according to design specifications
Forebay has flat, concrete bottom
Outlet structure/overflow elevation is confirmed Measure/record distance from overflow to top of media
filter
Impermeable liner meets design specifications
Impermeable liner attached to concrete perimeter wall
Impermeable liner is not exposed
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
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All construction was completed,
rain garden was installed last.
Weir El - Top Media = 1.72'
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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:
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Michael Palizzi
Civil Engineering Designer II
michael@quality-engineering.com
(970) 416-7891
Quality Engineering
2637 Midpoint Drive, Suite E
Fort Collins, CO 80525
No irrigation designed for rain garden.