HomeMy WebLinkAboutSite Certifications - 12/07/2018 (2)12/15 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) Volume 1, Section 6.11, 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 Certification - FCSCM Vol.2, Ch.10
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
12/15 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 Certification: 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.
12/15 Page 3
4.Outlet Structure Certification
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 Vol.1, Ch.7, Sect.3&4
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.)
12/15 Page 4
III.Storm Pipes (aka storm drains) - FCSCM Vol.1, Ch.6, Sec. 4
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.
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 Vol.1, Ch.7, Sec.4.1.3.4
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.
4925
4930
4935
4940
4945
4950
4955
4960
4925
4930
4935
4940
4945
4950
4955
4960
149+50 150+00 151+00
13.02 LF -
24'' RCP
@ 0.40%
STA=150+13.02
INLET
E
DOUBLE
NO.
16
INLET
TBC=4941.71
INV
OUT
(24"
NW)=4935.81
DEPTH=5.90
STA=150+00.00
CONNECTION
TO
EXISTING
PIPE
REMOVE
EXISTING
FES
AND
CONTINUE
PIPE
INV
IN
(24"
SE)=4935.76
PROPOSED
GRADE
EXISTING
GROUND
100 yr
HGL
4925
4930
4935
4940
4945
4950
4955
4960
4925
4930
4935
4940
4945
4950
4955
4960
179+50180+00181+00
STA=180+22.75
INLET
H1
NYLOPLAST
24"
STANDARD
GRATE
RIM=4946.98
INV
OUT
(12"
E)=4940.43
DEPTH=6.55
22.75
LF -
12"
N12
HDPE
@
0.40%
STA=180+00.00
EXMH
H
8'Ø
MH
RIM=4948.96
INV
IN
(12"
W)=4940.34
INV
IN
(54"
N)=4936.84
INV
OUT
(54"
SW)=4936.84
(EXISTING)
DEPTH=12.12
PROPOSED
GRADE
EXISTING
GROUND
(EXISTING)
4925
4930
4935
4940
4945
4950
4955
4960
4925
4930
4935
4940
4945
4950
4955
4960
169+50170+00171+00
STA=170+48.68
INLET
G1
NYLOPLAST
24"
STANDARD
GRATE
RIM=4947.90
INV
OUT
(12"
NE)=4941.35
DEPTH=6.55
44.22 LF -12"
N12 HDPE @
0.40%
STA=170+00.00
EX
INLET
G
12'
QUAD
TYPE
16
COMBO
INLET
TBC=4949.67
INV
IN
(12"
SW)=4941.17
INV
IN
(54"
N)=4937.67
INV
OUT
(54"
S)=4937.67
(EXISTING)
DEPTH=12.00
PROPOSED
GRADE
EXISTING
GROUND
(EXISTING)
4915
4920
4925
4930
4935
4940
4945
4950
4915
4920
4925
4930
4935
4940
4945
4950
159+00160+00161+00161+50
STA=160+00.00
EX
INLET
F
6'
DOUBLE
TYPE
16
COMBO
INLET
TBC=4941.73
INV
IN
(18"
W)=4934.09
INV
OUT
(18"
E)=4934.09
(EXISTING)
DEPTH=7.64
STA=160+21.00
SDMH
F1
4'Ø
MH
RIM=4942.81
INV
IN
(18"
S)=4934.17
INV
OUT
(18"
E)=4934.17
DEPTH=8.64
STA=161+04.15
INLET
F2
DOUBLE
NO.
16
INLET
RIM=4942.06
INV
OUT
(18"
N)=4934.51
DEPTH=7.56
PROPOSED
GRADE
EXISTING
GROUND
100 yr
HGL 21.00 LF - 18'' RCP @ 0.40%
83.15 LF -18''RCP @ 0.40%
HGL
5265 Ronald Reagan Blvd., Suite 210
Johnstown, CO 80534
970.800.3300 O
www.gallowayUS.com
2017. Galloway & Company, Inc. All Rights Reserved
Date:
Drawn By:
Project No:
Checked By:
H:\Hartford
Homes\CO,
Timnath
-
HFHLV0001.02_Timberline
&
Vine
Multi-Family\CADD\4-As
Built\HFHLV1.02_SD09_S_AB.dwg
-
Nate
Whitcomb
-
3/20/2018
HFHLV0001.02
11.10.2017
Init.#Issue / DescriptionDate
EAST
RIDGE
TH
IR
D
FILING
MON
TAGE
TOWNH
OMES
FORT
COLLINS,
CO
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 GALLOWAY.
COPYRIGHTS AND INFRINGEMENTS WILL
BE ENFORCED AND PROSECUTED.
COPYRIGHT
EAST RIDGE HOLDINGS
4801 Goodman Rd.
Timnath, CO 80547
970.674.1109
CAUTION - NOTICE TO CONTRACTOR
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 FIELD
LOCATION OF ALL UTILITIES, PUBLIC OR PRIVATE, WHETHER
SHOWN ON THE PLANS OR NOT, PRIOR TO CONSTRUCTION.
REPORT ANY DISCREPANCIES TO THE ENGINEER PRIOR TO
CONSTRUCTION.
2. WHERE A PROPOSED UTILITY CROSSES AN EXISTING UTILITY,
IT IS THE CONTRACTOR'S RESPONSIBILITY TO FIELD VERIFY
THE HORIZONTAL AND VERTICAL LOCATION OF SUCH
EXISTING UTILITY, EITHER THROUGH POTHOLING OR
ALTERNATIVE METHOD. REPORT INFORMATION TO THE
ENGINEER PRIOR TO CONSTRUCTION.
( IN FEET )
1 inch = ft.
0 Feet5050
50
100 150
KEYMAP
STA:
SCALE:H: 1"=V: 1"=
toPRIVATE
STORM DRAIN E
150+00.00 150+13.02
50 5
ROTATION: 0°
STA:
SCALE:H: 1"=V: 1"=
toPRIVATE
STORM DRAIN H
180+00.00 180+22.75
50 5
STA:
SCALE: H: 1"=V: 1"=
toPRIVATE
STORM DRAIN G
170+00.00 170+48.68
50 5
STA:
SCALE: H: 1"=V: 1"=
toPRIVATE
STORM DRAIN F
160+00.00 161+04.15
160+04.05 5
PROPOSED RIGHT-OF-WAY
EXISTING WATER MAIN
PROPOSED WATER MAIN
PROPOSED STORM SEWER
LEGEND:
T T T
EXISTING STORM SEWER
EXISTING GAS
EXISTING TELEPHONE
EXISTING SANITARY SEWER
PROPOSED STORM INLET
PROPOSED CURB & GUTTER
PROPOSED SANITARY SEWER
PROPOSED FIRE HYDRANT
PROPOSED LOTLINE
EASEMENT LINE
PROPERTY BOUNDARY
E E EPROPOSED ELECTRIC
GAS
8''W
8''SS
8''SS
8''W
PROPOSED MANHOLE
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 SHALL VERIFY 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 SHEETS SS01-SS06 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 EXISTING CONDITIONS SHEETS 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.
SD09 SD09
4934.55
4934.90
4934.90
4935.67
AB 03.19.18 Record Drawings JEP
4934.35
20.7 LF @ 1.69%
82.7 LF @ 0.64%
@0.64%
82.7LF
@ 1.69%20.7 LF
4941.21
4942.79
4942.10
4935.43
LOT 15
LOT 14
LOT 13
LOT 12
LOT 21
LOT 20
LOT 19
LOT 18
LOT 15
LOT 14
LOT 13
LOT 12
LOT 11
LOT 22
LOT 23
LOT 9
LOT 10
LOT 11
LOT 10
LOT 9
LOT 8
LOT 17
LOT 18
LOT 19
LOT 20
LOT 16 LOT 17
LOT 16
BLOCK 2
BLOCK 2
BLOCK 3
12''SS
12''SS
12''SS
12''SS
12''SS
12''SS
12''SS 12''SS 12''SS 12''SS 12''SS 12''SS
SPIRIT LANE (PRIVATE DRIVE)
VICOT
WAY
CRUSADER STREET
TRACT G
TRACT G
TRACT K
TRACT L
TRACT J
TRACT F
TRACT
F
TRACT K
LOT 24
LOT 25
LOT 26
LOT 27
LOT 28
LOT 29
LOT 30
LOT 31 LOT 32 LOT 33 LOT 34
LOT 35
LOT 36
BLOCK 3
BLOCK 2BLOCK 2
BLOCK 3
BLOCK 3
LOT 1 LOT 2 LOT 3 LOT 4
LOT 5
LOT 6 LOT 7 LOT 8 LOT 9 LOT 10 LOT 11 LOT 12 LOT 13 LOT 14
TIMBERLINE
ROAD
TRACT I
FF=4946.21
FF=4946.17
FF=4945.42FF=4945.49 FF=4945.64
44
PROPOSED UTILITY PLANS FOR: EAST
RIDGE SECOND FILING
DATED: 6.30.16
3.3%
11.9%
11.2%
7.3%19.6%
12.1%
17.5%
8.7%
3.2%
5.1%
16.4%
9.0%
4.4%
15.2%
15.7%
5.9%
23.8%
ZEPPELIN
WAY
ACCESS EASEMENT
ACCESS
EASEMENT
44
44
43
3.0%
5 - RISERS 6 - RISERS 6 - RISERS 6 - RISERS 6 - RISERS
5 - RISERS
5 - RISERS
5 - RISERS 5 - RISERS 6 - RISERS 6 - RISERS 6 - RISERS 6 - RISERS 6 - RISERS
5 5 6 6 6 6
66
5 5 5 5 5 5
44
43
44
46.26
46.64
46.74
42.80
45.61
45.74
45.64 45.27
45.4146.51
3
3
3
3
1
1
1
1
1
1 1 1 1
44.48
45.41
13.9%
10.9%
START
3' WIDE SOFT BOTTOM PAN
END
3' WIDE SOFT BOTTOM PAN
43.38
25.0%
ELECTRA
WAY
(PRIVATE
DRIVE)
AVENGER
PLACE
(PRIVATE
DRIVE)
FF=4945.07 FF=4945.14 FF=4945.35
EXIST.SDMHSV
RIM=4943.23
X X X X X X X X X X X X X X X X X
X
X
X
X
X
X X X
CAUTION - NOTICE TO CONTRACTOR
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 FIELD
LOCATION OF ALL UTILITIES, PUBLIC OR PRIVATE, WHETHER
SHOWN ON THE PLANS OR NOT, PRIOR TO CONSTRUCTION.
REPORT ANY DISCREPANCIES TO THE ENGINEER PRIOR TO
CONSTRUCTION.
2. WHERE A PROPOSED UTILITY CROSSES AN EXISTING UTILITY,
IT IS THE CONTRACTOR'S RESPONSIBILITY TO FIELD VERIFY
THE HORIZONTAL AND VERTICAL LOCATION OF SUCH
EXISTING UTILITY, EITHER THROUGH POTHOLING OR
ALTERNATIVE METHOD. REPORT INFORMATION TO THE
ENGINEER PRIOR TO CONSTRUCTION.
KEYMAP GR06
JEP
NEW
( IN FEET )
1 inch = ft.
0 Feet3030
30
60 90
5265 Ronald Reagan Blvd., Suite 210
Johnstown, CO 80534
970.800.3300 O
www.gallowayUS.com
2017. Galloway & Company, Inc. All Rights Reserved
Date:
Drawn By:
Project No:
Checked By:
H:\Hartford
Homes\CO,
Timnath
-
HFHLV0001.02_Timberline
&
Vine
Multi-Family\CADD\4-As
Built\HFHLV1.02_GR03_S_AB-2019
CAD.dwg
-
James
Prelog
-
12/4/2018
HFHLV0001.02
11.10.2017
Init.#Issue / DescriptionDate
EAST
RIDGE
TH
IR
D
FILING
MON
TAGE
TOWNH
OMES
FORT
COLLINS,
CO
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 GALLOWAY.
COPYRIGHTS AND INFRINGEMENTS WILL
BE ENFORCED AND PROSECUTED.
COPYRIGHT
EAST RIDGE HOLDINGS
4801 Goodman Rd.
Timnath, CO 80547
970.674.1109
PROPOSED CONTOUR
EXISTING STORM SEWER
PROPOSED STORM SEWER
PROPOSED PAN
EXISTING CONTOUR
PROPOSED CURB AND GUTTER
PROPERTY BOUNDARY
PROPOSED SPOT ELEVATION
PROPOSED SLOPES
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. THE CONTRACTOR SHALL
BE RESPONSIBLE TO CALL ALL UTILITY COMPANIES (PUBLIC AND PRIVATE) PRIOR TO ANY CONSTRUCTION TO VERIFY EXACT UTILITY
LOCATION.
2.REFER TO THE PLAT FOR LOT, TRACT, EASEMENTS AND OTHER SURVEY INFORMATION.
3.ELEVATIONS SHOWN HAVE BEEN ABBREVIATED. THE ENTIRE ELEVATION IS THE ELEVATION SHOWN PLUS 4900 FEET (43.71 = 4943.71).
4.CONTOURS SHOWN OUTSIDE OF STREET RIGHT-OF-WAY ARE OVERLOT CONTOURS. CONTOURS SHOWN WITHIN THE STREET
RIGHT-OF-WAY ARE FINISHED GRADE.
5.CURB SPOTS SHOWN ARE FLOWLINE ELEVATIONS. ALL OTHER SPOTS ARE LOT CORNERS, OVERLOT OR FINISHED GRADE FOR
LANDSCAPE AREAS.
6.4:1 MAX TIE TO EXISTING SURFACE AT END OF PHASE IF REQUIRED.
7.REVEGETATION SHALL BE PER THE APPROVED LANDSCAPE PLAN.
8.FHA GRADING SHOWN FOR REFERENCE ONLY. LOT SPECIFIC PLOT PLANS TO BE SUBMITTED TO THE CITY FOR APPROVAL ONCE
INDIVIDUAL FOOTPRINTS ARE DETERMINED.
9.THE TOP OF FOUNDATION ELEVATIONS SHOWN ARE THE MINIMUM ELEVATIONS REQUIRED FOR PROTECTION FROM THE 100-YEAR
STORM.
10. SOFT BOTTOM PAN AND ASSOCIATED UNDERDRAIN REQUIRED FOR SWALES LESS THAN 2% SLOPE.
11. DRIVEWAY SLOPES RANGE FROM 2% TO 10%.
PROPOSED STORM INLET
2.0%
(47.45)
EXISTING SPOT ELEVATION
PROPOSED LOT LINE
PROPOSED CONCRETE
CROSS PAN (TYP.)
PROPOSED RIGHT OF WAY
LEGEND:NOTES:
LOT TEMPLATE A B
4550
50
NOTES FOR EXTERIOR ENTRY SIDEWALK STEPS
1. USE 5-1/2" RISERS AND/OR 7-1/2" RISERS AS NECESSARY
2. MAXIMUM RISER HEIGHT IS 7-1/2"
3. MINIMUM 5' LANDINGS BETWEEN DOUBLE OR SINGLE RISERS
AS DEPICTED ON PLAN.
4. LANDINGS SHALL BE 2% MAXIMUM SLOPE.
5. 12" TREADS (TYPICAL)
6. FOR HANDRAIL REQUIREMENTS REFER TO ARCHITECTURAL
DESIGN PLANS.
NOTES GARAGE STEPS
3 - 6-1/2" RISERS
3 - 7-1/2" RISERS
4 - 6-3/4" RISERS
1 - 6-1/4" RISERS
3 - 6-3/4" RISERS
4 - 6-1/2" RISERS
1
2
3
4
5
6
MATCHLINE SEE SHEET GR05
GR01 GR02 GR03
GR05
GR06
GR04
GR07
AB 03.19.18 Record Drawings JEP
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V. Storm Drain Inlets - FCSCM Vol.1, Ch.6, Sec. 3
A. Construction/Installation: All storm drain inlets have been constructed in accordance with the
approved construction plans.
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 inlet covers are stenciled or stamped with the following designation: NO DUMPING – DRAINS
TO POUDRE RIVER.
VI.Culverts - FCSCM Vol.2, Ch.9
A. Construction/Installation: All culverts have been constructed and/or installed in accordance with
the approved construction plans.
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. 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.
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
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.Riprap - FCSCM Vol.1, Ch.7, Sec.4.4.4.3
A. Construction: All riprap has been installed in the locations and sizes indicated on the approved
construction plans.
XII.Permanent Erosion Control Fabric - FCSCM Vol.1, Ch.7
A. Construction: All fabric has been installed in the locations and sizes indicated on the approved
construction plans.
1.All fabric was installed per the details on the approved construction plans.
XIII.Post-Construction Site Cleanup - FCSCM Vol.3, Ch.7
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.
XIV.Certification of Other Permanent BMPs - FCSCM Vol.2, Ch.8, Sec.2 & FCSCM Vol.2, Ch.12
A.The construction of channel drop structures is in accordance with the approved plan both in
location, horizontal dimensions and cross-section.
XV.Certification of LID and Water Quality Facilities - FCSCM Vol.3, Ch.4
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.
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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.)
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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
12/15 Page 3
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