HomeMy WebLinkAboutSite Certifications - 01/10/20201/19 Page 1
OVERALL SITE and DRAINAGE CERTIFICATION
Commercial, Multi-Family and Subdivision Certification Form and Checklist
Project Name:
Date:
Building Permit Numbers:
(Commercial or multi-family)
Per the requirement in Fort Collins Stormwater Criteria Manual (FCSCM) Chapter 3, Section 3.0 to certify as-
built construction to the approved drainage and grading plans, please fill in all applicable items in this
Certification Form for Commercial, Multi-Family and Overall Single Family sites. NOTE: several items must be
verified during construction. A copy of the approved grading plan must be submitted with the as-built grading
plan. (As-built elevations must be written in red next to the approved elevations.)
•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.
Attach an explanation or description of the as-built condition for any items listed or for anything not listed but
shown on the approved construction plans.
Provide an as-built redline or Mylar drawing with the following:
I.Water Quality and Quantity Detention Basin - FCSCM Ch. 6 and 7
For multiple detention basins on a site, provide the following for each basin separately:
A. Volume: As-built topographic verification is attached at 1-foot (or less) contour intervals and
volume verification calculations for the water quality capture volume and the 100-year detention storage
volume.
1. Detention basin topography was prepared by a professional land surveyor registered in the state
of Colorado.
2.Both proposed and as-built contours are shown on the same plan sheet (dashed lines for
proposed and solid lines for as-built).
3.All critical spot elevations as shown on the approved construction plans have been verified and
the as-built elevations are shown on the plan sheet.
4.Stage-storage-discharge tables are provided on a separate document.
5.Verification that designed drain time is in compliance with Colorado Revised Statute § 37-92-
602(8) is attached and has been uploaded to the Statewide Compliance Portal
(tinyurl.com/COCompliancePortal) for approval. Uploaded documents must include:
a.The cover sheet from the approved drainage report
b.The stamped certification page from the approved drainage report
c.As-built topographic survey
d.Stamped certification page from the Overall Site & Drainage Certification
e.PDF output from the Stormwater Detention and Infiltration Design Data Speadsheet
Accepted 1/10/2020 WL
1/19 Page 2
B. Water Quality and Quantity Detention Basin Grading: Attached is as-built verification that there is
a minimum 2% positive fall into the concrete trickle pans or flow-line(s) from all areas in the bottom of
the detention pond. If there is a “soft pan” in the flow-line, all areas still must meet the minimum 2%
grade requirement.
1. Low Flow: Choose one of the following detention basin low flow options as applicable:
a. Turf swale for low flow path in detention basin.
There is a minimum 2% grade in the flow-line(s) of the detention basin. The flattest as-built grade
is .
b. Concrete pan for low flow in detention basin.
There is a concrete pan installed that meets the grades as shown on the approved construction
plans. (Show as-built spot elevations.)
c. Soft pan for low flow in detention basin.
• Verify and document the soft pan material gradation, trench width and depth - to be verified
during construction by engineer. Picture documentation is preferred or engineer’s statement of
visual inspection and compliance. (Choose one below.)
o There is a soft pan with an underdrain installed that meets the design on the approved
construction plans. (Show the underdrain grades, bedding material, geotextile, spot elevations,
bends, cleanouts, etc.)
o There is soft pan installed without an underdrain but there is a type A or B soil. The soil
type must be documented by supplying verification from a registered professional geotechnical
engineer.
NOTE: Spot elevations are to be within 0.2 ft. +/-.
2. Side Slopes: The as-built side slopes of the detention basin have been calculated and are shown.
Indicate the side slope with an arrow and a numerical value (e.g., 6.25:1). The maximum slope allowed
is 4:1. Small areas of 3:1 may be acceptable, but slopes steeper than 3:1 must be stabilized or re-
graded. Provide documentation if a variance was granted for steeper slopes during the design process.
3. Spillway: The following items must be field verified:
a. The location of the spillway is indicated on the as-built plan.
b. The width of the spillway is indicated on the as-built plan.
c. The elevation(s) of the spillway is shown on the as-built plan.
d. A concrete ribbon defines the location and grade of the spillway.
e. There is downstream scour protection in the spillway as per the construction plans. Indicate
type: (riprap size “D50” gradation and bedding type, geotextile, buried
riprap with inches of bury, etc.).
f. There are no obstructions in the spillway, such as trees, bushes, sidewalks, landscape
features, rocks, etc.
1/19 Page 3
4. Outlet Structure:
a. The orifice plate for the approved release rate is installed with the correct size and location of
the orifice.
b. The orifice plate for the water quality outlet is installed with the correct hole size, number of
rows and columns of holes.
c. The bottom hole on both the water quality and quantity outlets are at the bottom of the plate
so no water ponds in front of the plate.
d. The well screen is the correct material and is installed as shown on the construction plans.
e. 100-year overflow grate elevation is . (Elev. A on detail D-46)
f. The top elevation of the water quality capture volume is . (Elev. B on detail
D-46)
g. Overflow grate is made of the correct material, has the correct bar spacing, is hinged at the
top and bolted at the bottom.
h. The bottom of the outlet box has no obstructions or misalignments that will cause it to retain
runoff water and is sloped at 2% towards outlet.
II. Channels/Swales - FCSCM Ch. 8, Sec. 2.0 and Ch. 9, Sec. 5.0
A. Capacity: The as-built capacity of all the major channels and swales has been verified. They meet
or exceed capacity requirements shown in the approved drainage study for this project.
1. All swales are located within the drainage easements as shown on the construction plans.
2. Longitudinal slopes and side-slopes (cross-sections) have been verified. Design criteria requires
longitudinal slopes of 2% min. (on vegetated swales) and side-slopes no steeper than 4:1. If these
criteria are not met, the certification engineer will write a justification and propose mitigation for each
instance or have the issues corrected. If variances to these criteria have previously been approved and
are shown on the construction plans, no justification is needed.
3. As-built spot elevations on channels/swales are shown that correspond to spot elevations
shown on the approved construction plans.
4. All permanent erosion control measures are installed as shown on the approved construction
plans (e.g., drop structures, riprap, TRMs, etc.). (Include pictures and verification of the materials used
as part of this verification.)
5. All pans, curbs, storm pipes or other appurtenances appropriately tie into each other in the
system. (Pictures at tie-in points suggested.)
6. The minimum freeboard is provided for all channels and swales as shown on the approved
construction plans or as identified in the approved drainage study. (Show the freeboard provided on
the cross-sections as on the construction plan set or attached as separate documentation.)
7. The low flow portion of all channels or swales is clear of obstructions. (No landscaping, trees,
shrubs, sod, etc. infringe on the low flow portion of channels or swales.)
1/19 Page 4
III. Storm Pipes (aka storm drains) - FCSCM Ch. 9, Sec. 4.0
A. Storm Drain Pipe Capacity: The as-built capacity of all pipes installed on this project has been
verified and meets or exceeds the capacity requirements shown in the approved drainage study for this
project.
1. All storm drain pipe sizes and materials have been verified and are in conformance with the
approved construction plans. (Indicate on the plan and profile sheets that they have been verified.)
Material and size substitutions must be approved prior to installation. If a pipe size or material was
changed during construction, the certification engineer must attach the approval documents or supply
them with this certification. Approval documents must include a calculation documenting the capacity
equivalency (equal or greater) of the substituted size.
2. The longitudinal slope of the pipe is as shown on the approved construction plans. The
acceptable minimum slope is 0.4%. All slopes flatter than the designed slope on the construction plans
must be justified with capacity calculations on an attached sheet.
3. The as-built invert elevations have been verified and are shown on the plan and profile sheets of
the approved construction plans.
B. Storm Drain Pipe Installation Requirements: All pipes are installed in accordance with the
approved construction plans and construction specifications.
1. The minimum cover requirements for all pipes have been met as shown on the approved
construction plans. These will be called out in critical locations.
2. All encasements and clearances as specified on the approved construction plans have been met.
3. Any specific joint types or construction methods specified on the approved construction plans
have been met. (List on a separate sheet and attach to this certification.)
IV. Concrete Pans - FCSCM Ch. 8, Sec. 2.0
A. Construction/Installation: All concrete pans have been constructed in accordance with the
approved construction plans.
1. The concrete pans are the correct size/width as shown on the approved construction plans.
2. The longitudinal slopes of the pans are as shown on the approved construction plans. The
certification engineer must justify or mitigate longitudinal slopes less than the minimum of 0.4% unless
a flatter slope was approved and is shown on the approved construction plans. Provide mitigation or
justification by separate document.
3. The cross-section of the pan is as shown on the construction plans. (Specifically, the pan cross-
section is “V” shaped and meets the side slope shown on the detail.)
4. The concrete pans are a minimum of 6 inches thick without reinforcement and a minimum of 4
inches thick with a minimum of 6X6-W14xW14 reinforcement per detail D20B and D20C. (Provide
documentation of the reinforcement used if different than shown on the details or on the approved
construction plans.)
5. The spot elevations shown on the concrete pan(s) have been verified and are shown on the as-
built drawings.
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SEE SHEET SS29
SANITARY LINE 1-17
SEE SHEET SS34
12" WATER LINE
SEE SHEET WT02
STORM DRAIN C10
SEE SHEET SD08
STORM DRAIN C9
SEE SHEET SD10
SANITARY LINE 1-16A
SEE SHEET SS32
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SEE NOTE 13
N:19354.8581
E:11121.4343
INLET C11
STA=127+76.63
6' Double Type 16 Combo Inlet
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E:11023.1880
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8'Ø MH
STA=120+15.48
STA=140+00.00 (STORM C6)
N: 18992.2232
E: 11066.3395
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SEE NOTE 13
STA=121+29.93
STA=150+00.00 (STORM C7)
N: 19091.8684
E: 11122.6288
SDMH C9
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STA=126+55.25
STA=170+00.00 (STORM C9)
N: 19617.1744
E: 11120.2430
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6'Ø FLAT TOP MH
STA=127+52.48
STA=180+00.00 (STORM C10)
N: 19617.7152
E: 11023.0184
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TOP=4941.65
12" WATER CROSSING
STA=120+29.86
INV=4932.08
8" SANITARY CROSSING
STA=120+41.85
TOP=4933.91
8" WATER CROSSING
100 yr HGL
HGL HGL
HGL HGL HGL HGL HGL HGL HGL HGL HGL HGL HGL
HGL HGL
49
48
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46
47
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SANITARY LINE 1-17
SEE SHEET SS34
12" WATER LINE
SEE SHEET WT02
STORM DRAIN C
SEE SHEET SD08
STORM DRAIN C9
SEE SHEET SD10
BA
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YEAGER STREET
180+00
INLET C10.1
STA=180+07.76
10' CDOT TYPE R Inlet
N:19609.9530
E:11023.0105
SDMH C10
6'Ø FLAT TOP MH
STA=180+00.00
STA=127+52.48 (STORM C)
N: 19617.7152
E: 11023.0184
24'' RCP
7.76 LF
@ 0.52%
4925
4930
4935
4940
4945
4950
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4925
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@ 0.52%
PROPOSED
GRADE
EXISTING GRADE
100 yr HGL
SD08
PLAN AND PROFILE
STORM DRAIN C & C10
JEP
CMG
Date Issue / Description#
STAMP
THESE PLANS ARE AN INSTRUMENT OF
SERVICE AND ARE THE PROPERTY OF
GALLOWAY, AND MAY NOT BE DUPLICATED,
DISCLOSED, OR REPRODUCED WITHOUT
THE WRITTEN CONSENT OF THE
ARCHITECT. COPYRIGHTS AND
INFRINGEMENTS WILL BE ENFORCED AND
PROSECUTED.
COPYRIGHT
3760 E. 15th Street, Suite 202
Loveland, CO 80538
970.800.3300
Planning. Architecture. Engineering.
O
www.gallowayUS.com
C 2015. Galloway & Company, Inc. All Rights Reserved
Init.
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OF 188 SHEETS
SHEET TITLE:
Date:
Drawn By:
Project No:
Checked By:
HFHLV0001.01
12.05.16
EAST RIDGE HOLDINGS
4801 Goodman Rd.
Timnath, CO 80547
970.674.1109
KEYMAP
STA:
SCALE:H: 1"=V: 1"=
toSTORM DRAIN C 120+00.00 127+56.82
50 5
MA
T
C
H
L
I
N
E
SE
E
S
H
E
E
T
:
ST
A
:
SD
0
7
12
0
+
0
0
.
0
0
LI
N
E
MA
T
C
H
ST
A
20
+
0
0
STA:
SCALE:H: 1"=V: 1"=
toSTORM DRAIN C10 180+00.00 180+07.76
50 5
SD08
CALL 2 BUSINESS DAYS IN ADVANCE BEFORE YOU
DIG, GRADE, OR EXCAVATE FOR THE MARKING OF
UNDERGROUND MEMBER UTILITIES.
CALL UTILITY NOTIFICATION CENTER OF
COLORADO
Know what'sbelow.
before you dig.Call
R
LEGEND:
NOTES:
1.ALL UTILITY LOCATIONS SHOWN ARE BASED ON MAPS PROVIDED BY THE APPROPRIATE UTILITY COMPANY
AND FIELD SURFACE EVIDENCE AT THE TIME OF SURVEY AND IS TO BE CONSIDERED AN APPROXIMATE
LOCATION ONLY. IT IS THE CONTRACTOR'S RESPONSIBILITY TO FIELD VERIFY THE LOCATION OF ALL
UTILITIES, PUBLIC OR PRIVATE, WHETHER SHOWN ON THE PLANS OR NOT, PRIOR TO CONSTRUCTION.
REPORT ANY DISCREPANCIES TO THE ENGINEEER PRIOR TO CONSTRUCTION.
2.JOINTS ON ELLIPTICAL PIPES SHALL BE TONGUE AND GROOVE WITH FLEXIBLE JOINT SEAL COMPOUND PER
THE PIPE MANUFACTURER STANDARDS AND AS APPROVED BY CITY INSPECTOR.
3.PIPE LENGTHS ARE CALCULATED FROM THE CENTER OF MANHOLES AND INLET BOX STRUCTURES. LAYING
LENGTH INCLUDES FLARED END SECTIONS.
4.RCP SHALL BE CLASS III OR GREATER. PIPE MATERIAL, BEDDING, AND INSTALLATION WITHIN PUBLIC
RIGHTS-OF-WAY SHALL BE GOVERNED BY THE CITY OF FORT COLLINS. ALTERNATES (SUCH AS ADS N-12 OR
HP SANITITE) OUTSIDE OF THE R.O.W. SHALL BE APPROVED IN ADVANCE BY THE ENGINEER. ALL JOINTS
SHALL BE 'WATERTIGHT' USING APPROPRIATE GASKETS OR JOINT WRAPS (PER ASTM C443 FOR RCP AND PER
ASTM F477 / D3212 FOR PLASTIC PIPE).
5.ALL STORM MANHOLES LOCATED IN SIDEWALKS AND TRAILS SHALL HAVE PEDESTRIAN RATED LIDS.
6.MANHOLE DIAMETERS SHOWN ARE PER CITY STANDARD DETAIL D-3. CONTRACTOR SHALLVERIFY THAT
MANHOLE DIAMETERS ARE SUFFICIENT FOR INSTALLATION (i.e., WITHIN PRE-CASTER'S TOLERANCES, ETC.).
7.SEE DETAILS FOR RIPRAP PAD SIZING.
8.PROVIDE WATER TIGHT JOINTS PER ASTM C443 AT ALL CIRCULAR STORM PIPE.
9.MANHOLES SHALL BE SHAPED UNLESS OTHERWISE NOTED.
10.SANITARY SEWER INVERTS ARE SHOWN FOR INFORMATION ONLY. SEE SHEET SS01-SS35 FOR FINAL
ELEVATIONS.
11.WATERLINE INVERTS ARE SHOWN FOR INFORMATION ONLY. THE CONTRACTOR SHALL VERIFY THAT 18"
VERTICAL SEPARATION IS MAINTAINED BETWEEN WATER LINE AND STORM PER ELCO STANDARD DETAILS.
12.SEE SHEETS EX01-EX02 FOR EXISTING BOUNDARY CORNER COORDINATES.
13.ALL STORM MANHOLE LIDS TO BE ROTATED OUT OF CURB AND GUTTER, CROSSPANS AND SIDEWALKS.
14.MANHOLE RIM ELEVATION ARE TO BE ADJUSTED TO 1
4" BELOW FINISHED GRADE IN PAVED AREAS.
15.SEE SHEET DT07 FOR HEADWALL DETAILS AND SHEET GR05 FOR SPOT ELEVATIONS OF HEADWALL.
16.THE NATURAL HABITAT BUFFER ZONE SHALL BE MAINTAINED AS A NATIVE LANDSCAPE PER THE
APPROVED LANDSCAPE PLAN.
S
PROPOSED STORM INLET
EASEMENT LINE
PROPOSED LOTLINE
PROPOSED RIGHT-OF-WAY
PROPERTY BOUNDARY
PROPOSED CURB & GUTTER
EXISTING GAS
EXISTING OVER-HEAD ELECTRIC
PROPOSED FIBER OPTIC
EXISTING STORM SEWER
PROPOSED STORM SEWER
PROPOSED FIRE HYDRANT
PROPOSED RESIDETIAL SERVICE
PROPOSED SEWER SERVICE
EXISTING SANITARY SEWER
PROPOSED SANITARY SEWER
EXISTING WATER MAIN
PROPOSED WATER MAIN W 8"
SS SSSS 8"
4900
4900
PROPOSED CONTOUR
EXISTING CONTOUR
PROPOSED WATER LINE LOWERING
( IN FEET )
1 inch = ft.
050 50
50
100 150
AB6 10/1/2019 DRAWING OF RECORD JEP
AB2B NOTE: PER CONTRACTOR WATERLINES ARE PER PLAN
UNLESS OTHERWISE NOTED. AS BUILT LOCATIONS PER
SURVEY PROVIDED 10/1/19 FOR VALVE BOXES, FIRE
HYDRANTS, AND SERVICE METERS.
INV OUT (24" S)=4912.20 4912.48
REPRESENTS RECORD SURVEY DATA
PROVIDED BY NORTHERN ENGINEERING
MATT E. LOCKWOOD, PLS
PLS.0038316
DATED: 10.01.19
AB6
49
4
8
.
4
4
49
4
8
.
2
0
49
4
3
.
3
0
49
4
3
.
0
3
49
4
2
.
3
4
49
4
8
.
8
8
49
4
1
.
7
1
49
4
2
.
4
3
49
4
1
.
4
4
49
4
9
.
0
7
49
3
9
.
6
3
49
3
9
.
4
3
49
4
7
.
0
2
49
3
7
.
2
4
49
3
6
.
7
7
49
3
6
.
3
3
49
4
5
.
8
4
49
3
5
.
7
6
49
3
7
.
3
4
49
3
5
.
7
6
RI
M
=
4
9
4
8
.
2
2
49
4
3
.
2
6
49
4
3
.
3
0
49
4
3
.
0
3
49
4
2
.
3
4
49
4
8
.
2
0
8.11 LF
2.84%
98.39 LF 0.64%
245.64 LF 0.64%
278.39 LF 0.79%
AB6 AB6
8.11 LF
2.84%
98.39 LF 0.64%
245.64 LF 0.64%278.39 LF 0.79%
AB6
AB6
AB6
49
4
3
.
3
2
4925
4930
4935
4940
4945
4950
4955
4925
4930
4935
4940
4945
4950
4955
149+00 150+00 151+00 152+00 152+50
42'' RCP
123.51 LF
@ 0.60%
ST
A
=
1
6
0
+
0
8
.
3
8
(
S
T
O
R
M
C
7
.
1
)
ST
A
=
1
5
1
+
2
4
.
1
8
S
T
O
R
M
C
7
IN
L
E
T
C
7
.
1
15
'
T
Y
P
E
1
6
C
O
M
B
O
I
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L
E
T
RI
M
=
4
9
4
6
.
0
5
IN
V
I
N
(
3
6
"
N
)
=
4
9
3
8
.
0
1
IN
V
O
U
T
(
4
2
"
W
)
=
4
9
3
7
.
5
1
DE
P
T
H
=
8
.
5
4
36'' RCP
31.33 LF
@ 0.60%
ST
A
=
1
5
1
+
5
7
.
0
2
IN
L
E
T
C
7
.
2
15
'
T
Y
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E
1
6
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O
M
B
O
I
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L
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=
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6
.
0
5
IN
V
O
U
T
(
3
6
"
S
)
=
4
9
3
8
.
2
0
DE
P
T
H
=
7
.
8
5
ST
A
=
1
2
1
+
2
9
.
9
3
(
S
T
O
R
M
C
)
ST
A
=
1
5
0
+
0
0
.
0
0
S
T
O
R
M
C
7
SD
M
H
C
7
8'
Ø
M
H
RI
M
=
4
9
4
7
.
1
3
IN
V
I
N
(
4
8
"
N
)
=
4
9
3
7
.
2
2
IN
V
I
N
(
4
2
"
E
)
=
4
9
3
6
.
7
7
IN
V
O
U
T
(
4
8
"
S
W
)
=
4
9
3
6
.
2
7
DE
P
T
H
=
1
0
.
8
5
PROPOSED GRADE
EXISTING GRADE
STA=151+50.60
TOP=4936.34
8" WATER CROSSING
STA=151+40.60
INV=4934.67
8" SANITARY CROSSING
100 yr HGL
18
"
M
I
N
.
HGL HGL
47
47
48
488''SS
8''SS
8''SS
8'
'
W
8''W 8''W 8''W 8''W 8''W
8''SS 8''SS 8''SS 8''SS
8'
'
S
S
8'
'
S
S
8''W
8''W
YE
A
G
E
R
S
T
R
E
E
T
COLEMAN STREET
LOT 11
LOT 10
LOT 12
LOT 13
LOT 14
LOT 1
LOT 2
LOT 13
TRACT O
BLOCK 11
BLOCK 8
SANITARY LINE 1-15
SEE SHEET SS28
140+0
0
141
+
0
0
150+00
151+00
SDMH C7
8'Ø MH
SEE NOTE 13
STA=150+00.00
STA=121+29.93 (STORM C)
N: 19091.8684
E: 11122.6288
INLET C7.2
STA=151+57.02
15' Type 16 Combo Inlet
N:19137.5407
E:11245.6561
INLET C7.1
STA=151+24.18
15' Type 16 Combo Inlet
N:19104.7079
E:11245.4735
42'' RCP 123.51 LF @
0
.
6
0
%
36'' RCP 31.33 LF @ 0.60%
CON
Q
U
E
S
T
S
T
R
E
E
T
STORM DRAIN C
SEE SHEET SD08
49
49
5
0
46
46
47
47
48
49
12
'
'
W
12
'
'
W
12
'
'
W
12
'
'
W
12
'
'
W
18
'
'
S
S
18
'
'
S
S
18
'
'
S
S
18
'
'
S
S
18
'
'
S
S
18
'
'
S
S
8''W 8''W 8''W 8''W
8''SS8''SS
BA
R
N
S
T
O
R
M
E
R
S
T
R
E
E
T
LO
T
1
7
LO
T
1
8
LO
T
2
LO
T
1
BL
O
C
K
8
BL
O
C
K
9
170+00
SDMH C9
6'Ø FLAT TOP MH
STA=170+00.00
STA=126+55.25 (STORM C)
N: 19617.1744
E: 11120.2430
FES C9.1
STA=170+44.17
36" FES
N:19661.3221
E:11121.5975
36'' RCP 44.17 LF @ 0.50%
SANITARY LINE 1-17
SEE SHEET SS34
12" WATER LINE
SEE SHEET WT02
STORM DRAIN C
SEE SHEET SD08
STORM DRAIN C10
SEE SHEET SD08
SANITARY LINE 1-15
SEE SHEET SS29
YEAGER STREET
4925
4930
4935
4940
4945
4950
4955
4925
4930
4935
4940
4945
4950
4955
169+00170+00171+00171+50
18
"
C
L
E
A
R
36'' RCP
44.17 LF
@ 0.50%
ST
A
=
1
7
0
+
4
4
.
1
7
FE
S
C
9
.
1
36
"
F
E
S
IN
V
O
U
T
(
3
6
"
S
)
=
4
9
4
2
.
6
4
ST
A
=
1
2
6
+
5
5
.
2
5
(
S
T
O
R
M
C
)
ST
A
=
1
7
0
+
0
0
.
0
0
S
T
O
R
M
C
9
SD
M
H
C
9
6'
Ø
F
L
A
T
T
O
P
M
H
RI
M
=
4
9
4
8
.
8
8
IN
V
I
N
(
3
6
"
W
)
=
4
9
4
1
.
8
2
IN
V
I
N
(
3
6
"
N
)
=
4
9
4
2
.
4
2
IN
V
O
U
T
(
4
2
"
S
)
=
4
9
4
1
.
6
2
DE
P
T
H
=
7
.
2
6
ST
A
=
1
7
0
+
0
8
.
6
6
IN
V
=
4
9
3
4
.
7
7
18
"
S
A
N
I
T
A
R
Y
C
R
O
S
S
I
N
G
STA=170+18.66
TOP=4940.68
12" WATER CROSSING
PROPOSED GRADE
EXISTING GRADE
100 yr HGL
CONCRETE
CUT-OFF
WALL
SD10
PLAN AND PROFILE
STORM DRAIN C7, & C9
JEP
CMG
Date Issue / Description#
STAMP
THESE PLANS ARE AN INSTRUMENT OF
SERVICE AND ARE THE PROPERTY OF
GALLOWAY, AND MAY NOT BE DUPLICATED,
DISCLOSED, OR REPRODUCED WITHOUT
THE WRITTEN CONSENT OF THE
ARCHITECT. COPYRIGHTS AND
INFRINGEMENTS WILL BE ENFORCED AND
PROSECUTED.
COPYRIGHT
3760 E. 15th Street, Suite 202
Loveland, CO 80538
970.800.3300
Planning. Architecture. Engineering.
O
www.gallowayUS.com
C 2015. Galloway & Company, Inc. All Rights Reserved
Init.
EA
S
T
R
I
D
G
E
S
E
C
O
N
D
F
I
L
I
N
G
SO
U
T
H
T
I
M
B
E
R
L
I
N
E
R
O
A
D
AN
D
V
I
N
E
D
R
I
V
E
FO
R
T
C
O
L
L
I
N
S
,
C
O
OF 188 SHEETS
SHEET TITLE:
Date:
Drawn By:
Project No:
Checked By:
HFHLV0001.01
12.05.16
EAST RIDGE HOLDINGS
4801 Goodman Rd.
Timnath, CO 80547
970.674.1109
KEYMAP
STA:
SCALE:H: 1"=V: 1"=
toSTORM DRAIN C7 150+00.00 151+57.02
50 5
STA:
SCALE:H: 1"=V: 1"=
toSTORM DRAIN C9 170+00.00 170+79.16
50 5
SD10
CALL 2 BUSINESS DAYS IN ADVANCE BEFORE YOU
DIG, GRADE, OR EXCAVATE FOR THE MARKING OF
UNDERGROUND MEMBER UTILITIES.
CALL UTILITY NOTIFICATION CENTER OF
COLORADO
Know what'sbelow.
before you dig.Call
R
LEGEND:
NOTES:
1.ALL UTILITY LOCATIONS SHOWN ARE BASED ON MAPS PROVIDED BY THE APPROPRIATE UTILITY COMPANY
AND FIELD SURFACE EVIDENCE AT THE TIME OF SURVEY AND IS TO BE CONSIDERED AN APPROXIMATE
LOCATION ONLY. IT IS THE CONTRACTOR'S RESPONSIBILITY TO FIELD VERIFY THE LOCATION OF ALL
UTILITIES, PUBLIC OR PRIVATE, WHETHER SHOWN ON THE PLANS OR NOT, PRIOR TO CONSTRUCTION.
REPORT ANY DISCREPANCIES TO THE ENGINEEER PRIOR TO CONSTRUCTION.
2.JOINTS ON ELLIPTICAL PIPES SHALL BE TONGUE AND GROOVE WITH FLEXIBLE JOINT SEAL COMPOUND PER
THE PIPE MANUFACTURER STANDARDS AND AS APPROVED BY CITY INSPECTOR.
3.PIPE LENGTHS ARE CALCULATED FROM THE CENTER OF MANHOLES AND INLET BOX STRUCTURES. LAYING
LENGTH INCLUDES FLARED END SECTIONS.
4.RCP SHALL BE CLASS III OR GREATER. PIPE MATERIAL, BEDDING, AND INSTALLATION WITHIN PUBLIC
RIGHTS-OF-WAY SHALL BE GOVERNED BY THE CITY OF FORT COLLINS. ALTERNATES (SUCH AS ADS N-12 OR
HP SANITITE) OUTSIDE OF THE R.O.W. SHALL BE APPROVED IN ADVANCE BY THE ENGINEER. ALL JOINTS
SHALL BE 'WATERTIGHT' USING APPROPRIATE GASKETS OR JOINT WRAPS (PER ASTM C443 FOR RCP AND PER
ASTM F477 / D3212 FOR PLASTIC PIPE).
5.ALL STORM MANHOLES LOCATED IN SIDEWALKS AND TRAILS SHALL HAVE PEDESTRIAN RATED LIDS.
6.MANHOLE DIAMETERS SHOWN ARE PER CITY STANDARD DETAIL D-3. CONTRACTOR SHALLVERIFY THAT
MANHOLE DIAMETERS ARE SUFFICIENT FOR INSTALLATION (i.e., WITHIN PRE-CASTER'S TOLERANCES, ETC.).
7.SEE DETAILS FOR RIPRAP PAD SIZING.
8.PROVIDE WATER TIGHT JOINTS PER ASTM C443 AT ALL CIRCULAR STORM PIPE.
9.MANHOLES SHALL BE SHAPED UNLESS OTHERWISE NOTED.
10.SANITARY SEWER INVERTS ARE SHOWN FOR INFORMATION ONLY. SEE SHEET SS01-SS35 FOR FINAL
ELEVATIONS.
11.WATERLINE INVERTS ARE SHOWN FOR INFORMATION ONLY. THE CONTRACTOR SHALL VERIFY THAT 18"
VERTICAL SEPARATION IS MAINTAINED BETWEEN WATER LINE AND STORM PER ELCO STANDARD DETAILS.
12.SEE SHEETS EX01-EX02 FOR EXISTING BOUNDARY CORNER COORDINATES.
13.ALL STORM MANHOLE LIDS TO BE ROTATED OUT OF CURB AND GUTTER, CROSSPANS AND SIDEWALKS.
14.MANHOLE RIM ELEVATION ARE TO BE ADJUSTED TO 1
4" BELOW FINISHED GRADE IN PAVED AREAS.
15.SEE SHEET DT07 FOR HEADWALL DETAILS AND SHEET GR05 FOR SPOT ELEVATIONS OF HEADWALL.
16.THE NATURAL HABITAT BUFFER ZONE SHALL BE MAINTAINED AS A NATIVE LANDSCAPE PER THE
APPROVED LANDSCAPE PLAN.
S
PROPOSED STORM INLET
EASEMENT LINE
PROPOSED LOTLINE
PROPOSED RIGHT-OF-WAY
PROPERTY BOUNDARY
PROPOSED CURB & GUTTER
EXISTING GAS
EXISTING OVER-HEAD ELECTRIC
PROPOSED FIBER OPTIC
EXISTING STORM SEWER
PROPOSED STORM SEWER
PROPOSED FIRE HYDRANT
PROPOSED RESIDETIAL SERVICE
PROPOSED SEWER SERVICE
EXISTING SANITARY SEWER
PROPOSED SANITARY SEWER
EXISTING WATER MAIN
PROPOSED WATER MAIN W 8"
SS SSSS 8"
4900
4900
PROPOSED CONTOUR
EXISTING CONTOUR
PROPOSED WATER LINE LOWERING
SD10
( IN FEET )
1 inch = ft.
050 50
50
100 150
1 03/29/17 Utility and Plan Revisions JEP
1 2
2 03/15/19 Storm Revisions JEP
49
4
7
.
0
2
49
3
7
.
2
4
49
3
6
.
7
7
49
.
3
6
.
3
3
49
3
7
.
8
0
49
3
7
.
5
9
49
3
7
.
8
0
120.18 LF
0.68%
29.68 LF
0.88%
29.68 LF 0.88%
120.18 LF
0.68%
45.81 LF 0.24%
49
4
7
.
0
2
49
3
7
.
2
4
49
3
6
.
7
7
49
.
3
6
.
3
3
45.81 LF
0.24%
49
4
2
.
5
4
INV OUT (24" S)=4912.20 4912.48
REPRESENTS RECORD SURVEY DATA
PROVIDED BY NORTHERN ENGINEERING
MATT E. LOCKWOOD, PLS
PLS.0038316
DATED: 10.01.19
AB6
AB6
AB6 10/1/2019 DRAWING OF RECORD JEP
AB6
AB6
AB6
AB6
1/19 Page 5
V. Storm Drain Inlets - FCSCM Ch. 9, Sec. 3.0
A. Construction/Installation: All storm drain inlets have been constructed in accordance with the
approved construction plans and construction specifications.
1. The size and type of inlets are consistent with the inlets shown on the approved construction
plan. Indicate by writing “Verified” on each inlet on the plan sheet or list on a separate document the
inlet number(s), type and size (length). If the inlet installed is other than the one on the approved
construction plan detail sheet, provide the name and source of the detail with justification for equal or
better capacity.
2. The size of the inlet opening is consistent with the approved detail. (Check height and width.)
3. The elevation of the grate (if applicable) is at the elevation shown on the street profile or as
indicated by a spot elevation on the construction plans.
4. The as-built invert elevations of all pipes entering and leaving the inlet are shown on the plan
and profile sheets within construction tolerance of 0.2 feet. If substantially different, provide
justification and capacity calculations to show the capacity is not affected or propose mitigation.
5. The as-built size of the inlet box is as shown on the construction plans or an explanation or
justification is attached.
6. All Type C, R, 13 and 16 inlet covers are stenciled or stamped with the following designation (or
an equivalent): NO DUMPING – DRAINS TO POUDRE RIVER.
VI. Culverts - FCSCM Ch. 9, Sec. 4.0
A. Construction/Installation: All culverts have been constructed and/or installed in accordance with
the approved construction plans and construction specifications.
1. All culvert sizes have been verified as indicated on the as-built construction plans as correct.
2. The culvert material type for all culverts installed is as on the approved construction plans and is
indicated on the as-built plans.
3. The as-built invert “in and out” elevations have been verified and are indicated on the as-built
construction plans.
4. The culvert headwalls or wing walls have been installed as shown on the approved construction
plans. Headwalls or wing walls may be needed in the as-built conditions onsite if the slopes adjacent to
the culvert are greater than 4:1. Please note areas needing stabilization in the certification narrative.
An alternative to consider is a turf reinforcement mat (TRM).
VII. Sub-Drains
A. Construction/Installation: All sub-drains shown on the construction plans have been installed in
accordance with those plans and the construction specifications. Sub-drains installed with the sanitary
sewer are to be verified on the sanitary sewer plan and profile sheets of the construction plans. (NOTE:
Indicate any sub-drains installed after the plans were approved on the as-built plans.)
1. The size of the sub-drains are as approved on the construction plans and are indicated on the as-
built plans.
2. The type of sub-drain, in particular the perforated and non-perforated sections of the drain, are
as indicated on the approved construction plans.
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3. The cover requirements per the construction plans are provided.
4. The cleanouts have been installed at the locations shown on the construction plans and are
accessible for cleaning. (Cleanouts can be buried a maximum of 6 inches deep with their locations
marked.)
5. The backfill materials for sub-drains are as shown on the approved construction plans. (This
includes the type, depth and width.)
6. The geo-textile liner completely wraps the sub-drain and the permeable backfill material unless
shown otherwise on the approved construction plans. (Sub-drain pipe wrapped in a sock filter material
is accepted only if approved prior to installation.)
VIII. Curb Cuts
A. Construction: All curb cut openings are constructed in accordance with the approved construction
plans and construction specifications.
1. The size (width) of the curb cut opening is as shown on the approved construction plans.
2. The curb cut openings tie into a downstream swale, pipe, or other appurtenances with a smooth
transition and there no obstructions such as riprap or sod impeding the flow downstream of the curb
cut.
IX. Sidewalk Culverts & Chases
A. Construction/Installation: All sidewalk culverts have been installed at the locations shown on the
approved construction plans.
1. The size (width and length) of the culverts are as shown on the approved construction plans.
2. The cover plate is a minimum 5/8-inch galvanized plate bolted to a galvanized angle iron per the
detail shown on the approved construction plans or per the City’s detail.
3. The sidewalk culvert invert “in and out” elevations have been verified and are indicated on the
as-built plans.
4. The sidewalk culvert opening is as shown on the approved construction plans or per the City’s
detail.
5. There is a smooth transition both on the inlet and outlet ends of the sidewalk culvert with no
obstructions such as riprap or sod impeding the flow into or out of the sidewalk culvert.
X. Site Grading - FCSCM Ch. 8
A. Construction: All common open spaces have been graded in accordance with the approved
construction plans.
1. The grading on all common open spaces bordering private lots has been verified as correct and
the as-built rear lot corner elevations have been shown on the as-built plans.
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2. The as-built contours for “overlot grading” are shown on the as-built construction plans for all
common open spaces, tracts, outlots, etc. If not in compliance, please attach a narrative describing the
situation for noncompliance and when it may be corrected. An escrow for overlot grading may be
required. (NOTE: Residential Lot Grading Certification is a separate process from this Overall Site
Certification. It is understood that residential lots will be brought to final grade once the foundation is
backfilled so they may be lower than the plan shows at this Overall Site Certification stage.)
3. All turf reinforcement mats (TRMs) have been installed as shown on the approved construction
plans and the slopes are stabilized.
XI. Permanent Erosion Control BMPs - FCSCM Ch. 9, Sec. 7.0
A. Construction: All permanent erosion control BMPs have been installed per the approved
construction plans.
1. All riprap has been installed in the locations and sizes indicated on the approved construction
plans.
2. All fabric has been installed in the locations and sizes indicated on the approved construction
plans.
a. All fabric was installed per the details on the approved construction plans.
XII. Post-Construction Site Cleanup - FCSCM Ch. 3, Sec. 2.0
A. Construction: All construction debris and obstructions of any kind have been removed from
drainage paths.
1. All construction debris has been removed except in staging area(s).
2. All ruts have been smoothed out in all construction areas.
3. All areas needing reseeding have been identified and future stabilization goals have been
coordinated with the Erosion Control Inspector and in accordance with FCSCM Vol.2 Chapter 12. Note
the area needing stabilization in the narrative.
XIII. Certification of LID and Water Quality Facilities - FCSCM Ch. 7
A. Attached are the During Construction Inspection Checklist for Low Impact Development (LID) and
other items to be verified during construction, along with pictures and other required documentation.
XIV. Certification of Other Permanent BMPs
A. The construction of other permanent BMPs not specifically addressed in this certification is in
accordance with the approved plan. This may include grade control structures, rundowns, bridges, stream
access/improvements, etc.
Please specify other permanent BMPs included on this site: