HomeMy WebLinkAboutLot Certifications - 10/03/2023CERTIFICATION OF LOT GRADING
Pursuant to Fort Collins City Code § 26-544 & City Land Use Code § 3.3.2 (e)
Date: October 2, 2023 Subdivision' Blehm Subdivision, 2nd Filing
Address: 2400 Kechtef Road_______________________ Permit Application #: B2204329_____________________________
_________________________________ Larimer County Parcel #: 8605306005_________________
Lot: J____________Block:_______________ Larimer County Reception #:______________________
(on development agreement)
I, (print) Megan l. Keefe________________________, 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
Building Department does not approve grading plans).
No Yes ft
2.
3.
4.
5.
6.
Certification includes the attached as-built survey dated 08/22/23 (must be within 60
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
• -BTeafrpoints/htghpomts
• Swales-
• Berms N/A
• RetamingTVcrHs
• Air conditioning pads Pad was installed at time of my inspection
• Window wells N/A
• Any other appurtenance(s) within, an easement N/A
All elevations are within a 0.2 foot tolerance of the approved grading plan.
** See attached letter. **
The top of foundation is at least 6 inches above the highest grade surrounding the
structure.
** See attached letter. **
There is a minimum grade of 5% away from the structure within the first 5 to 10 feet
adjacent to the residence.
1
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).
No Yes it
No
No
No
No
jMZ-'Y
Yes
Yes
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.
** See attached letter. **
8. All downspout locations and discharge directions are shown on the as-built survey.
Runoff is directed into an appropriate drainage system or lot line swale, and it is not
directed onto neighboring properties.
c •- /
2/14/17
No If^L-Ves
No Yes
Page 1
9. A smooth transition with no vertical offset (step) in grade is provided at the lot line to all
adjacent properties.
10. The grading of this lot does not adversely affect neighboring properties or City
infrastructure.
11. Landscaping has been completed prior to survey. If not, please indicate who will be
responsible for completing landscaping: homeowner____________________________________
12. Final site cleanup has been completed.
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.
14. Based on this information, I certify that (check one):
□ 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).
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 of the 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.
No Yes r T
No Yes
No Lvr: Yes
No Yes
No Yes
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PE Stamp
Sign and date
Name' Megan Keefe
Email: rneg@keefecivil.com
Phone' 970-215-6808
Company: Keefe Civil, Inc.___________
Ad d ress' 2125 Crockett Street
Fort Collins, Colorado 80526
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) Mailing Address Questions?
WaterUtilitiesEng(5)fcgov.com Fort Collins Utilities 970-221-6700
ATTN: Water Utilities Engineering
281 North College Avenue
Fort Collins, CO 80521
Fort Collins
2/14/17 Page 2
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ABBREVIATION LEGEND:
GRADING LIMITS
AREA OF DISTURBANCE ~0.6 ACRE
GRADING LIMITS
KEEFE CIVIL, INC
3125 Crockett Street
Fort Collins, Colorado 80526
(970) 215-6808
meg@keefecivil.com
October 2, 2023 Keefe Civil Project Number: 2022-025
Fort Collins Utilities
ATTN: Water Utilities Engineering
281 North College Avenue
Fort Collins, Colorado 80521
RE: 2400 Kechter Road Site Grading Certification
To Whom it May Concern:
The elevations and drainage patterns at 2400 Kechter Road, as shown on the attached as-built
overlot grading observations by Advanced Engineering, LLC (surveyed 08/22/23), are in general
conformance with City of Fort Collins’ site grading policies with the following exceptions listed
below.
Certification of Lot Grading Item #3 was marked “No” because the lot’s elevations are not
within a 0.2 ft tolerance of the approved grading plan. The two primary reasons why are as
follows.
1. The site’s shared access road has not been constructed by the Blehm Subdivision 2nd
Filing developer; therefore, the new gravel driveway has not been constructed.
2. In an effort to save the two mature trees in the front yard, the drainage swale was not
constructed on the south side of the house.
Despite the lot not being within the 0.2 ft tolerance, these conditions do not negatively impact
the lot’s ability to drain stormwater away from the structure and off the lot. The revised drainage
basins are identified in the attached drainage exhibit. The proposed basins are similar in size to
the historic basins and the site imperviousness increased by only ~165 square feet.
There is one small basin (B2), which has a localized low point ~40 ft northwest from the corner
of the house (Figure 1). The basin includes a very small portion of the roof and mainly consists
of landscaped ground on the west side of the house. If the stormwater runoff does not infiltrate
into the ground, it will overflow to the north, per historic conditions.
2400 Kechter Road Site Grading Certification Keefe Civil Project No.: 2022-025
Page 2 of 3 October 2, 2023
Figure 1: Sump location northwest of house
Certification of Lot Grading Item #4 was marked “No” because the builder was working with
the original house foundation for most of the remodel. The original top of foundation did not
permit a 6-inch drop to the adjacent finished ground and a 5% slope away from the foundation.
Therefore, the builder constructed a custom Z flashing along the foundation (Figure 2). The
original brick from the home was removed leaving an exposed foundation. They flashed up the
wall 6-inches over the foundation and then down the foundation 4-inches. On top of the
foundation, they used silicone, and on the foundation steel connection, they used an expanding
pond foam to provide the necessary sealant to waterproof the connection.
Figure 2: Custom Z flashing along foundation
2400 Kechter Road Site Grading Certification Keefe Civil Project No.: 2022-025
Page 3 of 3 October 2, 2023
Certification of Lot Grading Item #7 was marked “No” because no drainage swales were
constructed adjacent to the house.
Please do not hesitate to reach out to me if you have any questions or comments regarding the
above items.
Best regards,
Megan L. Keefe, PE
Keefe Civil, Inc.
Cc: Brett Barrow, Creative Angle Builders LLC
Attachments:
Revised Drainage Exhibit
As-built Overlot Grading Observations by Advanced Engineering, LLC (surveyed 08/22/23)
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PROPERTY LINE
PROPERTY LINE / KECHTER ROAD ROW
PROPERTY LINE / FUTURE
SAGE CREEK ROAD ROW
ABBREVIATION LEGEND:
1
FOR DRAINAGE REVIEW ONLY
NOT FOR CONSTRUCTION
KECHTER ROAD
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PROPERTY LINE / FUTURE
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HISTORIC DRAINAGE BASINS DEVELOPED DRAINAGE BASINS
2
1 1
2A
2B