HomeMy WebLinkAboutLot Certifications - 06/09/2017 (3). .
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CERTIFICATION OF LOT GRADING
Pursuant to Fort Collins City Code§ 26-544 & City Land Use Code§ 3.3.2 (e) ·
Date: June 9, 2017 Subdivision: WEST SIDE ------------
Address: 417 North Grant Avenue
Fort Collins, CO
Permit Application#: _B_1_6_05_1_9_7 ________ _
Larimer County Parcel#: _9_7_11_2_-_20_-_00_9 _______ _
Larimer County Reception #:_n_la __________ _ Lot: 9 & 10 Block: 294 ------
{on development agreement)
I, (print) Lester Crawford a Colorado registered professional engineer, verify that construction
of all stormwater facilities and grading is complete and hereby submit this certification.
Please answer the following questions by initialing the appropriate response . For each question initialed "No," attach an
explanation detailing how this will affect stormwater drainage for this lot and any adjacent lots .
1. Certification includes attached Stormwater-approved grading plan. (NOTE: City's No
Building Department does not approve grading plans).
2. Certification includes the attached as-built survey dated 5/25/17 (must be within 60 No
days of the date the certification is submitted) accurately and truthfully depicting
elevations for:
• Top of foundation/finished floor
• Finished grade on each side of the structure
• Quarter points along each lot line (not more than 50 feet apart)
• Break points/high points
• Swales
• Berms
• Retaining walls
• Air conditioning pads
• Window wells
• Any other appurtenance(s) within an easement
3. All elevations are within a 0.2 foot tolerance of the approved grading plan.
4. The top of foundation is at least 6 inches above the highest grade surrounding the
structure.
5. There is a minimum grade of 5% away from the structure within the first 5 to 10 feet
adjacent to the residence.
6. All slopes meet or exceed the minimum requirement of 2% (1% is acceptable on single
family lots when the swale is draining the runoff from only two adjoining properties)
and are not steeper than 33% (3:1).
7. All flow lines of stormwater drainage swales are a minimum of 6 inches below the
elevation of ground adjacent to the structure and will direct drainage as shown on the
Stormwater-approved grading plan.
No
No
No
No
No
Yes~
Yes ..LQ__
Yes.!&__
Yes~
Yes.!&__
Yes.!&_
8. All downspout locations and discharge directions are shown on the as-built survey. No __ Yes ..LQ_
2/14/1 7
Runoff is directed into an appropriate drainage system or lot line swale, and it is not
directed onto neighboring properties.
Page I
9. A smooth transition with no vertical offset (step) in grade is provided at the lot line to all No Yes~
adjacent properties.
10. The grading of this lot does not adversely affect neighboring properties or City No Yes~
infrastructure.
11. Landscaping has been completed prior to survey. If not, please indicate who will be
responsible for completing landscaping: Northern Landscape Services
No.1Q_ Yes
12 . Final site cleanup has been completed. No Yes.!&._
Yes LC 13. I personally visited the site as part of the certification process, and in my professional
opinion, the as-built survey is an accurate representation of the site conditions.
No
14. Based on this information, I certify that (check one):
D The elevations and drainage patterns of the lot/site are in substantial conformance with the City
approved drainage and grading plan for the property (information attached).
0 The elevations and drainage patterns of the lot/site as measured are in general conformance with the
City approved drainage plan with exceptions (information attached). In my professional judgment the
elevations and grading ofthe lot/site as constructed are functionally adequate and equivalent to the
specifically approved drainage plan, and will affect stormwater drainage on and off the lot/site in a
manner consistent with the approved drainage plan.
PE Stamp
Sign and date
Name: Les Crawford PE
Email: Les@LesCrawfordPE.com
Phone: 970 .773 .0610
Company: Les Crawford PE
Address: 242 Linden St
Fort Collins, CO
NOTE: A complete certification must be submitted at least two weeks prior to a request for a Certificate of Occupancy
for the lot/site, including, but not limited to, drawings of the lot/site showing the approved design and as-built surveyed
elevations of all structures, drainage and grading features, written information/explanation of discrepancies, and other
information necessary to confirm the above certification to:
Email (preferred)
WaterUtilitiesEng@fcgov.com
2/14/17
Mailing Address
Fort Collins Utilities
ATIN: Water Utilities Engineering
281 North College Avenue
Fort Collins, CO 80521
Questions?
970-221-6700
City of
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Page 2
S89°40'41"E 139.95' (M)
PROPERTY LINE/LIMITS
OF CONSTRUCTION
RIGHT-OF-WAY
RIGHT-OF-WAY/LIMITS
OF CONSTRUCTION
PRESERVE & PROTECT
EXISTING TREE (TYP.)
EXISTING SHED
PRESERVE & PROTECT
EXISTING TREE (TYP.)
PRESERVE & PROTECT
EXISTING POWER POLE (TYP.)
MATCH INTO EXISTING
AT TOE OF SLOPE
MATCH INTO
EXISTING
S89°40'37"E 140.05' (M)
MATCH INTO
EXISTING
PRESERVE & PROTECT
EXISTING TREE (TYP.)
STAIRS TO DECK
(RE: ARCHITECT)
PROPOSED WINDOW
WELL
PROPOSED WINDOW
WELL
BUILDING COLUMN -
TYP. (RE: ARCHITECT)
MATCH INTO
EX. SIDEWALK
GRAVEL
DRIVEWAY
LANDSCAPE PAVERS -
(TYP. )
EDGE OF UPPER DECK
(RE: ARCHITECT)
PROPOSED CONCRETE
STOOP
PROPOSED CONCRETE STEPS WITH 2 (TWO) 6"
RISERS AND 1 (ONE) 12" TREAD.
PROPOSED STEPS WITH 2
(TWO) 6" RISERS AND 1 (ONE)
13" TREAD.
PROPOSED WINDOW
WELL
MATCH INTO
EXISTING 10' (±) WIDE CONCRETE DRIVEWAY
CONCRETE PATIO
MATCH INTO
EX. SIDEWALK
N89°40'42"W 140.16' (M)
MATCH INTO
EXISTING
PROPERTY LINE/LIMITS
OF CONSTRUCTION MATCH INTO
EXISTING 2' WIDE VALLEY PAN
WITH FLOWLINE @ 0.6%
MATCH INTO
EXISTING
36.9'MATCH INTO
EXISTING
MATCH INTO
EXISTING
DECK (RE:
ARCHITECT)
5' WIDE CONCRETE WALK
MATCH INTO
EX. SIDEWALK
DESIGN NOTES:LEGEND:
2. SPOT ELEVATIONS SHOWN ARE FLOWLINE, EDGE OF
PAVEMENT, OR EDGE OF WALK UNLESS NOTED OTHERWISE.
1 . EXISTING IMPERVIOUS AREA = 1,524 SQ. FT.
PROPOSED IMPERVIOUS AREA = 2,928 SQ. FT.
PROJECT BENCHMARKS:
PROJECT DATUM: NAVD88
BENCHMARK #1: City of Fort Collins Benchmark 1-00 on a catch basin at the southeast
corner of Vine Drive and College Avenue
ELEVATION: 4968.74
PLEASE NOTE: This plan set is using NAVD88 for a vertical datum. Surrounding
developments have used NGVD29 Unadjusted for their vertical datums.
If NGVD29 Unadjusted Datum is required for any purpose, the following equation should be
used: NGVD29 Unadjusted = NAVD88 - 3.17'
BASIS OF BEARINGS
Basis of Bearings is the West Right-of-Way Line of Grant Avenue as bearing S00°08'41" W
(assumed bearing).
CALL UTILITY NOTIFICATION CENTER OF
COLORADO
RORIGINAL FIELD SURVEY BY:
NORTHERN ENGINEERING SERVICES, INC
NE PROJECT NO. 376-006
DATE: OCTOBER 2016 CALL 2 BUSINESS DAYS IN ADVANCE BEFORE YOU
DIG, GRADE, OR EXCAVATE FOR THE MARKING OF
UNDERGROUND MEMBER UTILITIES.
6 0 6
( IN FEET )
1 INCH = 6 FEET
12 18 1
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0.6%
0.6%
ASBUILT BENCHMARK:
ASBUILT BENCHMARK: SOUTHEAST LOT CORNER, ELEVATION (4.97)
ASBUILT INFORMATION BY:
LES CRAWFORD P.E.
242 LINDEN STREET FORT COLLINS, CO 80524
DATE: MAY 25, 2017
FIELD CHANGE NOTES:
2. DECK AND GRAVEL ASSUMED IMPERVIOUS.
1 . CIRCLED SPOTS ARE +/- 0.2 FEET
CH
A
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T
O
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O
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NEW GRADE RIDGELINE
NEW SWAL
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DELE
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FL UNDER DECK
1 (ONE)
2.8%
2.8%
TO
P
O
F
D
E
C
K
5
.
8
5
5.3
5
6%
6%
10
%
UNCHANGED
3. ADDITION OF RIDGELINE WILL DIVERT FLOWS
UNDER THE RAISED WOODEN DECK. TO THE
CONCRET PAN.
DS
DS
DS
DS
DS
DSDS
DS DS
DS
DS
DS DS
DS
DS
5.4
55.3
5
5.7
5
FLAT @ 5.35 2%
FIELD CHANGED SPOT ELEVATION
FIELD CHANGED GRADE
FIELD CONFIRMED ELEV (=/- 0.2 FT)
DOWN SPOUT
ALL ARE DIRECTED AWAY
FROM FOUNDATION)
BASE DRAWING INFO FROM:
NORTHERN ENGINEERING SERVICES, INC
NE PROJECT NO. 376-006
DATE: OCTOBER 7, 2016
GRADING PLAN C1 BY: