HomeMy WebLinkAboutPROSPECT SPORTS CLUB - PDP230009 - SUBMITTAL DOCUMENTS - ROUND 3 - STORMWATER-RELATED DOCUMENTSStormwater
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
Kevin Brazelton 970-530-4044
19 Old Town Square #238
Fort Collins CO 80524
Max West Inc (Attn:Jonathan O'Neil)970-218-9453
1500 Buckeye Street
Fort Collins CO 80525
Prospect Sports Club
Lot 5,Prospect Park East,PUD,FTC
Development of existing vacant lot into a sports complex
Property to be developed into a sports complex
containing (2)gymnasiums and associated supporting infrastructure.
Alt.Compliance -Section 6,Detention
See attached.
See attached.
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
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Date complete application submitted:_____________
Date of approval/denial:__________________________ Variance: ☐ approved ☐ denied
Staff justifi cation/notes/conditions:_______________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
Approved by:__________________________________
Entered in UtilityFile Database? ☐ yes ☐ no
12/13/23
12/13/23
S TORMWATER V ARIANCE R EQUEST
P ROSPECT S PORTS C LUB
F ORT C OLLINS ,CO
19 OLD TOWN SQUARE #238 | FORT COLLINS, CO 80524 | 970-530-4044 | www.unitedcivil.com
December 20, 2023
DAN MOGEN
700 WOOD STREET
FORT COLLINS,CO 80522
RE: STORMWATER ALTERNATIVE COMPLIANCE AND VARIANCE REQUESTS
PROSPECT SPORTS CLUB –1600 EAST PROSPECT ROAD
PROJECT NUMBER:U22014
Dan,
This letter is being submitted on behalf of the owners of the Prospect Sports Club development. The project is currently in
the Preliminary Development Plan process and currently one (1) variance is being requested to modify portions of the Fort
Collins Stormwater Criteria Manual as follows:
VARIANCE REQUEST –STORMWATER DETENTION STANDARDS
DESIGN CRITERIA OF VARIANCE BEING REQUESTED
Section 6.0 within the Fort Collins Stormwater Criteria Manual which states:
Onsite detention is required for all development projects. The required minimum detention volume and maximum
release rate(s) for the developed condition 100-year recurrence interval storm must be determined in accordance
with the conditions and regulations established in the appropriate Master Drainage Plan(s) for that area of the City,
for the development and in accordance with the criteria set forth in this Manual.
HARDSHIP REGARDING REQUIREMENT
The site is located at 1600 East Prospect Road within Prospect Park East P.U.D and is surrounded by existing fully developed
commercial properties to the south (Advanced Energy) and west (Larimer County Coroner) along with Prospect Road and
Sharp Point to the north and east respectively.
The original subdivision development planned for drainage to be conveyed via overland flow to the drainage facility located
south of the site; therefore, no storm sewer currently exists on the site. However, the original subdivision plat did not include
drainage easements on the property to allow for the conveyance of 100-year stormwater runoff from the site, across the
property to the south and to the existing drainage facility. After discussion with the south property owner and their attorney,
the southern property owner has denied any new easements on their property. Refer to Appendix A for an email from the
south property owner regarding the denial of new easements. Therefore, the site cannot utilize the detention system within
the subdivision. Storm sewer for the project, required to convey both water quality and 100-year developed stormwater
flows, is proposed to convey runoff to the east across Sharp Point to the existing property also owned by the developer of
the Prospect Sports Club facility to avoid the need for drainage easements south of the site.
PROPOSED ALTERNATE DESIGN
The existing subdivision detention facility located south of the project site drains to the existing pond located east of Sharp
Point prior to being released to the Poudre River. Coincidentally, the property east of Sharp Point where this existing pond
is located is also owned by the developer of the Prospect Sports project. As such, the development team proposes to drain
100-year undetained flows from the Prospect Sports site directly to this existing pond, bypassing the subdivision detention
facility and negating the need for drainage easements on properties south of the development site. The following sections
of this variance request documents the negligible impacts this alternate design will cause the downstream pond and property.
S TORMWATER V ARIANCE R EQUEST
P ROSPECT S PORTS C LUB
F ORT C OLLINS ,CO
19 OLD TOWN SQUARE #238 | FORT COLLINS, CO 80524 | 970-530-4044 | www.unitedcivil.com
The existing detention facility was analyzed in the approved drainage report entitled, “Final Drainage and Erosion Control
Plan – Advanced Energy Buildings 7 & 8”, by Park Engineering Consultants and dated June 11, 1999, see Appendix A for
excerpts. In said report, the detention facility was found to require a total volume of 8.94 ac-ft; however, the facility only has
a volume of 7.69 ac-ft to the centerline of Sharp Point prior to overtopping, by approximately 0.32-feet, and draining directly
to the existing pond east of Sharp Point. With this request, it is calculated that the proposed development would account for
approximately 0.43 ac-ft of the required volume in the existing detention facility. By piping the undetained 100-year flows
from the proposed development directly to the existing pond east of Sharp Point:
1.The existing detention storage deficit in the facility to the south is reduced.
2.The amount of flow overtopping of Sharp Point is reduced.
3.The net volume of undetained storage the existing pond east of Sharp Point remains the same.
Additionally, it should be noted that the existing pond east of Sharp Point is approximately 6.1-acres in size. With the required
detention volume of the site of 0.43 ac-ft being attenuated within the existing pond, rather than detained onsite, the rise in
depth in the existing pond would be less than 1-inch.
Based on the information provided for this detention variance request, it is the design teams opinion that the proposed design
will improve the function of downstream infrastructure (i.e. the existing detention facility to the south and the overtopping
of Sharp Point), will have negligible impacts to the existing pond east of Sharp Point and will have no negative impacts on City
infrastructure, downstream properties or the safety of the public.
On behalf of the owners of the Prospect Sports Club and the design team, we thank you for the consideration of this request.
If you should have any questions or comments regarding this request, please feel free to contact us at your convenience.
Sincerely,
United Civil Design Group, LLC
Kevin Brazelton, PE
Principal
APPENDIX A – Referenced Materials
A PPENDIX A
R EFERENCED M ATERIALS
From: Jerad Nielsen <JNielsen@capitalsq.com>
Sent: Monday, January 9, 2023 12:10 PM
To: Erika Ashauer <eashauer@rbbarchitects.com>
Cc: Terri Hanna <terri@wwreynolds.com>; Jeff Wingert <jwingert@wwreynolds.com>
Subject: RE: 1600 E. Prospect Road Fort Collins, CO
Hi Erika –
Just tried your office line and missed you.
I believe there is currently an easement in place that allows access off Sharp Point Drive through our
existing drive lane to your proposed site.
We are not interested in entering into a parking share agreement or providing additional
easements. Please note that our tenant (Advanced Energy) does not have the authority to enter into
any arrangement.
Please call me if you would like to discuss further – 804.357.1852. As reference, I have copied our local
management team who oversees the property management of this building and also the association.
Thank you,
Jerad Nielsen, CPM ®, CCIM ®
Vice President, Asset Management
10900 Nuckols Road, Suite 200 |Glen Allen, VA 23060
P: 804.290.7900 | E: jnielsen@capitalsq.com
C: 804.357.1852
From: Erika Ashauer <eashauer@rbbarchitects.com>
Sent: Wednesday, December 28, 2022 5:20 PM
To: Jerad Nielsen <JNielsen@capitalsq.com>
Subject: 1600 E. Prospect Road Fort Collins, CO
Hi Jerad,
Please see below emails regarding agreements and easements between our property at Prospect Park
East PUD and your property (Advanced Energy).
Thank you,
Erika Ashauer, ALEP | Project Coordinator
Direct: (970) 488-3870
From: Erika Ashauer
Sent: Wednesday, December 21, 2022 10:25 AM
To:jnielsen@capitalsquare1031.com
Subject: FW: 1600 E. Prospect Road
Good morning, Jared.
I wanted to follow up with you on the below email regarding agreements and easements at Prospect
Park East PUD. Feel free to give me a call (number below in signature) if that would be easier to discuss.
Happy Holiday’s!
Erika Ashauer, ALEP | Project Coordinator
Direct: (970) 488-3870
From: Erika Ashauer <eashauer@rbbarchitects.com>
Sent: Wednesday, December 14, 2022 3:42 PM
To:jnielsen@capitalsquare1031.com
Cc: 2204 Prospect East <2204ProspectEast@rbbarchitects.com>
Subject: 1600 E. Prospect Road
Hi Jerad,
I am part of the architectural team at RB+B Architects working on the Prospect Sports facility being
developed in Prospect Park East PUD, Lot 5. I will be the liaison between the Prospect Sports owner and
our team, and the adjacent property owners. Have you been able to locate any existing access
agreements between your property (Advanced Energy) and ours? I have not yet found any existing
agreements in public records.
If there are no existing agreements, we would like to submit the following for your consideration:
1.Access Easement: We would like to share the same drive used to access the Advanced Energy
buildings off of Sharp Point Drive as the main point of entry to our site
2.Emergency Access Easement: Our site is relatively small, and we have determined that the fire
department cannot access our lot off Prospect Rd. and will need access on the southern side of
the site.
The emergency access would impact the AE site by extending the lane to the eastern portion of
the property so the fire lane can wrap around our property to the East. This would cause a loss
of a few parking spaces and trees on your property.
3.Parking Share Easement: Since our lot is relatively small for the proposed building of
approximately 35,000 square feet, we are limited to the number of parking spaces on our
lot. We are currently planning on 49 parking spaces on our property. The City of Fort Collins
routinely allows for parking share agreements between adjacent properties so that adequate
parking is available while not creating an abundance of hardscaped areas dedicated to parking.
Prospect Sports is expected to experience high vehicular parking during off-business hours: the
evenings and weekends. We hope that patrons of Prospect Sports could use the AE parking lot
as overflow parking during these peak times and the Prospect Sports parking would be available
for AE use as well.
I have attached a site plan with the proposed easements diagramed. Please do not hesitate to reach out
to me should you want to discuss further.
Thank you,
Erika Ashauer, ALEP| Project Coordinator
RB+B Architects
Direct: (970) 488-3870
eashauer@rbbarchitects.com | rbbarchitects.com
This unofficial copy was downloaded on Jul-06-2022 from the City of Fort Collins Public Records Website: http://citydocs.fcgov.com
For additional information or an official copy, please contact City of Fort Collins Utilities 700 Wood Street Fort Collins, CO 80524 USA
This unofficial copy was downloaded on Jul-06-2022 from the City of Fort Collins Public Records Website: http://citydocs.fcgov.com
For additional information or an official copy, please contact City of Fort Collins Utilities 700 Wood Street Fort Collins, CO 80524 USA
This unofficial copy was downloaded on Jul-06-2022 from the City of Fort Collins Public Records Website: http://citydocs.fcgov.com
For additional information or an official copy, please contact City of Fort Collins Utilities 700 Wood Street Fort Collins, CO 80524 USA
This unofficial copy was downloaded on Jul-06-2022 from the City of Fort Collins Public Records Website: http://citydocs.fcgov.com
For additional information or an official copy, please contact City of Fort Collins Utilities 700 Wood Street Fort Collins, CO 80524 USA
EXISTING
DETENTION
FACILITY
SITE LOCATION
EXISTING POND
LOCATION
OUTLET AND
OVERTOPPING OF
DETENTION FACILTY
PAST SHARP POINT
FLOWS INTO
EXISTING POND
DETENTION POND VOLUME (FAA Method)
Prospect Sports
POND ID:Required Onsite Pond Volume Calculation for Variance Request
100 Year Storm Into Detention Facility
Area =109,103 square feet
Area =2.50 acres
C 100 = 0.74
Q 100 = 13.70 cfs
Release Rate Out of Pond
Q OUT = 1.48 cfs
Unit Flow =0.59 cfs/acre
T C =11.0 minutes
Notes:
1. Release Rate controlled by 2 yr historic
Detention Volume Calculations
Rainfall Rainfall Inflow Rate Inflow Volume Adjustment
Factor
Average Outflow Volume Required
Duration (T)Intensity (I)Qin= ∑C100*Area*I Vi=(Qin*T*60)Factor Outflow Rate Vo=Qav*T *60 Storage Volume
m= 0.5(1 + Tc/T) Qav = m*Qout Vs=Vi-Vo
min in/hr cfs ft 3 cfs ft 3 ft 3
5 9.95 18.4 5,511 1.00 1.48 445 5,066
10 7.72 14.3 8,552 1.00 1.48 891 7,662
15 6.52 12.0 10,835 0.87 1.29 1,158 9,677
20 5.60 10.3 12,408 0.78 1.15 1,380 11,027
25 4.98 9.2 13,792 0.72 1.07 1,603 12,189
30 4.52 8.3 15,022 0.68 1.01 1,826 13,196
35 4.08 7.5 15,820 0.66 0.98 2,048 13,771
40 3.74 6.9 16,573 0.64 0.95 2,271 14,302
45 3.46 6.4 17,249 0.62 0.92 2,494 14,755
50 3.23 6.0 17,891 0.61 0.91 2,716 15,175
55 3.03 5.6 18,462 0.60 0.89 2,939 15,523
60 2.86 5.3 19,010 0.59 0.88 3,162 15,849
70 2.59 4.8 20,085 0.58 0.86 3,607 16,478
80 2.38 4.4 21,093 0.57 0.84 4,052 17,041
90 2.21 4.1 22,035 0.56 0.83 4,498 17,537
100 2.06 3.8 22,821 0.56 0.82 4,943 17,878
110 1.94 3.6 23,641 0.55 0.82 5,388 18,253
120 1.84 3.4 24,461 0.55 0.81 5,834 18,627
Required Detention Volume
V 100 = 18,627 cubic feet
V 100 = 0.43 acre-ft
Date: 12/13/2023 C:\United Civil Dropbox\Projects\U22014 - Prospect Park East\Reports\Drainage\Calculations\U22014-Drain Calcs.xlsm