HomeMy WebLinkAboutVariance Requests - 11/02/2022
NORTHERNENGINEERING.COM | 970.221.4158 VARIANCE REQUEST: RUDOLPH FARM
FORT COLLINS | GREELEY 1 | 1
VARIANCE REQUEST
November 2, 2022
City of Fort Collins
Development Review
281 N College Ave.
Fort Collins, CO 80524
RE: RUDOLPH FARM PROJECT
MINIMUM VERTICAL CURVE K-VALUE VARIANCE REQUEST
NORTHERN PROJECT #1896-001
To whom it may concern:
Northern Engineering would like to present this request for a variance for the Rudolph Farm project. General information
about the project is presented below, and detailed information about the nature of this request follows.
General Information
The project site is located at the northeast corner of Prospect Road and I-25 in Fort Collins. The site currently is used for
agriculture, and this project is slated to develop multi-use “super-pad” sites which will include, commercial, retail, and
residential developments. The entire project site consists of approximately 115 acres.
Prospect Road
Part of the project includes widening Prospect Road at the south frontage of the property. In order to connect to the existing
improvements that were installed with the new bridge across I-25, two vertical curves must be used. In order to meet all
other LCUASS requirements, the K-Values on the vertical curves immediately east of the I-25 connection are slightly lower
than shown in LCUASS requirements.
Carriage Parkway
Carriage Parkway is the primary connecting road from Prospect Rd. to the north for this proposed development. The site
features very little vertical fall across it, so in order to achieve positive drainage, fill must be brought in to raise the north side
of the site. As such, the connection point in Carriage Pkwy to the development immediately to the north differs in elevation.
We are trying to get the high point of the road as close to the north property boundary as possible to achieve proper drainage
patterns. The vertical curves needed to achieve this meet the minimum required length for the design speed of the road, but
the K-values for each curve are lower than the requirement. Extending the curves out far enough to achieve required K-
values would cause major challenges through the rest of the design.
We would like to request a variance to the LCUASS K-value requirement for vertical curves in these two areas in order to be
able to meet other LCUASS requirements and achieve optimized design.
If you have any questions, please feel free to contact me directly.
Sincerely,
NORTHERN ENGINEERING SERVICES, INC.
AUSTIN SNOW, PE
Project Engineer
Stormwater
Alternative Compliance/Variance Application
City of Fort Collins Water Utilities Engineering
Section A: Engineer/Owner Information
Engineer Name____________________________________________Phone___________________________
Street Address_____________________________________________________________________________
City__________________________________________State________________________Zip_____________
Owner Name______________________________________________Phone___________________________
Street Address_____________________________________________________________________________
City__________________________________________State________________________Zip_____________
Section C: Alternative Compliance/Variance Information
Section B: Proposed Project Information
Legal description and/or address of property____________________________________________________
Project Name______________________________________________________________________________
Project/Application Number from Development Review (i.e. FDP123456)__________________________
Description of Project_______________________________________________________________________
__________________________________________________________________________________________
Existing Use (check one): ☐ residential ☐ non-residential ☐ mixed-use ☐ vacant ground
Proposed Use (check one): ☐ residential ☐ non-residential ☐ mixed-use ☐ other____________________
If non-residential or mixed use, describe in detail_______________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
State the requirement from which alternative compliance/variance is sought. (Please include
applicable Drainage Criteria Manual volume, chapter and section.)
What hardship prevents this site from meeting the requirement?
What alternative is proposed for the site?
Attach separate sheet if necessary
Attach separate sheet if necessary
page 2
The owner agrees to comply with the provisions of the zoning ordinance, building code and all other
applicable sections of the City Code, Land Use Code, City Plan and all other laws and ordinances
affecting the construction and occupancy of the proposed building that are not directly approved by
this variance. The owner understands that if this variance is approved, the structure and its occupants
may be more susceptible to fl ood or runoff damage as well as other adverse drainage issues.
Signature of owner:_____________________________________________Date:_______________________
The engineer hereby certifi es that the above information, along with the reference plans and project
descriptions is correct.
Signature of engineer:___________________________________________Date:_______________________
PE STAMP
If you have questions or need assistance fi lling out forms, contact Fort Collins Utilities at:
Phone: 970-221-6700 · TDD 970-224-6003
Web: fcgov.com/stormwater · Email: WaterUtilitiesEng@fcgov.com
UtilitiesOffice use onlyDate complete application submitted:_____________
Date of approval/denial:__________________________ Variance: ☐ approved ☐ denied
Staff justifi cation/notes/conditions:_______________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
Approved by:__________________________________
Entered in UtilityFile Database? ☐ yes ☐ no
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CONNECT TO EXISTING
8" WATER MAIN CONNECT TO EXISTING
12" WATER MAIN
PROPOSED
FIRE HYDRANT
PROPOSED 8"
WATER LINE
PROPOSED 8"
SANITARY LINE
PROPOSED 15"
SANITARY LINE (TYP.)
PROPOSED 18"
SANITARY LINE (TYP.)
PROPOSED 8"
SANITARY LINE (TYP.)
CONNECT TO EXISTING
8" WATER MAIN
CONNECT TO EXISTING
12" WATER MAIN
PROPOSED 12"
WATER LINE (TYP.)
CONNECT TO EXISTING
SANITARY MANHOLE
EXISTING 60" GREELEY
RAW WATER LINE (TYP.)
PROPOSED 8"
WATER LINE (TYP.)
POND OUTLET 1
SEE SHEET ST6
POND OUTLET 2
SEE SHEET ST6
LAKE CANAL CULVERT A
SEE SHEET LC2
LAKE CANAL CULVERT B
SEE SHEET LC3
LAKE CANAL CULVERT C
SEE SHEET LC3
TRIC CULVERT A
SEE SHEET TRIC1
TRIC CULVERT B
SEE SHEET TRIC1
STORM DRAIN C
SEE SHEET ST3
STORM DRAIN E
SEE SHEET ST4
CULVERT H
SEE SHEET ST7
STORM DRAIN F
SEE SHEET ST5
STORM DRAIN G
SEE SHEET ST5
POND CULVERT 1
SEE SHEET ST7
STORM DRAIN D
SEE SHEET ST4
STORM DRAIN A
SEE SHEET ST1
STORM DRAIN B
SEE SHEET ST2
PROPOSED NON-POTABLE
IRRIGATION LINE (TYP.)
CONNECT TO EXISTING
CONNECT TO EXISTING
12" WATER MAIN
PROPOSED NON-POTABLE
PUMP HOUSE
PROPOSED 8"
WATER LINE (TYP.)
PROPOSED
REGIONAL TRAIL
SANITARY LINE A2 (W)
SEE SHEET SS6
SANITARY LINE A7
SEE SHEET SS8
SANITARY LINE A
SEE SHEET SS3
SANITARY LINE A2 (E)
SEE SHEET SS7
PROPOSED
FIRE HYDRANT
PROPOSED
FIRE HYDRANT
PROPOSED
FIRE HYDRANT
PROPOSED
FIRE HYDRANT
PROPOSED
FIRE HYDRANT
PROPOSED
FIRE HYDRANT
PROPOSED
FIRE HYDRANT
PROPOSED
FIRE HYDRANT
PROPOSED
FIRE HYDRANT
PROPOSED
FIRE HYDRANT
PROPOSED
FIRE HYDRANT
EXITING 18"
SANITARY SEWER
CDOT
1012 SE FRONTAGE RD,
FORT COLLINS
IMAGO ENTERPRISES INC.
140 PALMER DR,
FORT COLLINS
FOX GROVE HOA
4345 FOX GROVE DR,
FORT COLLINS
FOX GROVE HOA
4345 FOX GROVE DR,
FORT COLLINS
STORM DRAIN I
SEE SHEET ST8
NATURAL RESOURCE
(RAPTOR NEST)
NATURAL BUFFER
(RAPTOR NEST)
NATURAL BUFFER
(DITCH BANK)
100-YEAR BOXELDER
FLOODPLAIN
100-YEAR BOXELDER
FLOODPLAIN
PROPOSED
FIRE HYDRANT
PROPOSED
FIRE HYDRANT
BOXELDER
FLOODWAY
PROPOSED
FIRE HYDRANT PVC ELCO WATER LINE.
RLINE TO BE PLUGGED &
R CDOT REQUIREMENTS.
EROSION BUFFER ZONE
POSED 12"
ATER LINE
RE END.
ONNECT
ST SIDE
ER LINE
ST SIDE.
PROPOSED TEMP.
FIRE HYDRANT
PROPOSED 8"
WATER LINE
PROPOSED
FIRE HYDRANT
PROPOSED BLOW OFF
FIRE HYDRANT FOR ELCO
MAINTENANCE PROPOSED TEMP.
FIRE HYDRANT
The Storm G crossing in question is shown at Point A in the exhibit below. The crossing features
greater (15.2") than the generally accepted 12" minimum cover over smaller diameter RCP.
The Lake Canal Box Culvert (RCB) is shown at Point B in the exhibit below. The precast RCB will be
designed to meet AASHTO M 273 specifications, or equivalent ASTM Standard C 1433, for vehicle
traffic, to allow for less than 2-feet of cover on top.
We are requesting an alternative in the minimum cover requirement at these two locations for the
depths described above: 15" at Point A, and 11" at Point B.
POINT A - STORM G
POINT B - LAKE CANAL RCB