HomeMy WebLinkAboutSALUD FAMILY HEALTH CENTER LOT 4 - FDP200011 - SUBMITTAL DOCUMENTS - ROUND 2 - STORMWATER-RELATED DOCUMENTS
April 7, 2021
FLOODPLAIN MODELING REPORT
SALUD FAMILY HEALTH CENTER
Fort Collins, Colorado
Prepared for:
Salud Family Health Centers
203 S. Rollie Ave
Fort Lupton, Colorado 80621
Prepared by:
301 N. Howes Street Suite 100
Fort Collins, Colorado 80521
Phone: 970.221.4158
www.northernengineering.com
Project Number: 1067-001
This Drainage Report is consciously provided as a PDF.
Please consider the environment before printing this document in its entirety.
When a hard copy is absolutely necessary, we recommend double-sided printing.
April 7, 2021
City of Fort Collins
Stormwater Utility
700 Wood Street
Fort Collins, Colorado 80521
RE: Floodplain Modeling Report for
Salud Family Health Center
Dear Staff:
Northern Engineering is pleased to submit this Floodplain Modeling Report for your review. This report
accompanies the current submittal for the proposed Salud Family Health Center development.
This report has been prepared in accordance with the Fort Collins Floodplain Modeling Report Submittal
Guidelines, and serves to document updated conditions for a portion of the West Vine Basin floodplain.
If you should have any questions as you review this report, please feel free to contact us at your earliest
convenience.
Sincerely,
NORTHERN ENGINEERING SERVICES, INC.
Aaron Cvar, PhD, PE
Senior Project Engineer
Salud Family Health Center
Floodplain Modeling Report
TABLE OF CONTENTS
Page
I. PROJECT DESCRIPTION AND BACKGROUND .................................................................................... 1
II. STUDY LIMITS AND MAPPING .......................................................................................................... 6
III. HYDROLOGY AND HYDRAULICS ....................................................................................................... 7
IV. DISCUSSION OF RESULTS ................................................................................................................. 8
V. REGULATION COMPLIANCE ............................................................................................................. 9
References .................................................................................................................................................. 10
LIST OF FIGURES
Figure 1-Vicinity Map……………………………………………………………………………………….…..……………………...…..…...1
Figure 2-Aerial Photograph………………………………………………………………………………….………………..…….……......2
Figure 3-Proposed Development Plan…………….…………………………………………………………………..…….…...…......3
Figure 4-Current Floodplain Mapping...…….…………………………………………………………………………..….…………....4
Figure 5-Icon July 2020 Final Workmap…………………………..…………….………………………………………….…..…........5
APPENDICES
APPENDIX A - Current Effective Floodplain Workmap (West Vine Basin 100-year Floodplain Workmaps,
Provided by City of Fort Collins Stormwater Utility, July 2020)
APPENDIX B – Current Effective Floodplain Mapping – Fort Collins GIS Mapping
APPENDIX C - Proposed Conditions Floodplain Workmap
APPENDIX D – Project Parcel Mapping – Larimer County Land Information Locator
APPENDIX E - Project Development Plan (Final Grading Plan)
On Disk:
West Vine HEC-RAS Model (ICON July 2020 update, final version, provided by City of Fort Collins
Stormwater Utility, July 2020).
Map-Model Agreement Tables
Salud Family Health Center
Floodplain Modeling Report Page | 1
I. PROJECT DESCRIPTION AND BACKGROUND
A. Location
1. Vicinity Map
Figure 1 – Vicinity Map
2. The project site is located in the northwest quarter of Section 10, Township 7 North,
Range 69 West of the 6th Principal Meridian, City of Fort Collins, County of Larimer,
State of Colorado.
3. The project site is located just northwest of the intersection of Laporte Avenue and
North Taft Hill Road.
4. Much of the area surrounding the site is fully developed. The existing Lilac Apartment
site is located just to the west of the project site. The Stodgy Brewing business is
located just to the east. To the north of the site, the City of Fort Collins owns roughly
37 acres of open space.
5. The Larimer County Canal No. 2 irrigation ditch runs through the property, and has
two points of spill in a 100-year storm event. These two spill points are the primary
source of the 100-year flood zones identified within the property as discussed below.
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Floodplain Modeling Report Page | 2
B. Description of Property
1. The development area is roughly 22.7 net acres.
Figure 2 – Aerial Photograph
2. The subject property is currently composed of existing buildings, and landscaped areas.
Existing ground slopes are mild to moderate (i.e., 1 - 6±%) through the interior of the
property. General topography slopes from south to north; however, the front portion of
the property has an existing parking lot that slopes from north to south, towards Laporte
Avenue.
3. There are no major natural drainageways within or adjacent to the project site. Current
flood zones through the site are primarily caused by spill from the Larimer County Canal
No. 2.
4. The proposed project site plan is composed of the development of a medical building,
associated parking and extension of a public roadway which will serve as access to the
building and parking areas. Associated site work, water, and sewer lines will be
constructed with the development.
Study Site
Salud Family Health Center
Floodplain Modeling Report Page | 3
Figure 3 – Proposed Development Plan
C. Flooding Source and Previous Studies
1. The subject property is not located in a FEMA regulatory floodplain. The project site is,
however, located partially within the City of Fort Collins regulated West Vine floodplain
and floodway.
2. The West Vine Basin is roughly 2350 acres in size and extends from the foothills, east of
North Overland Trail, east to North Shields Street and the Cache La Poudre River. The
majority of the basin is in unincorporated Larimer County, with roughly 15 percent of the
basin within City of Fort Collins city limits. Historically, flooding has occurred throughout
the basin, within multiple flow paths that are not well defined. Many of the basin’s
drainage facilities are considered inadequate and drainage problems occur frequently.
3. The current effective floodplain is shown in Figure 4, below. Mapping shown on the City
of Fort Collins “FC Maps” website is not consistent with a recently approved update to
floodplain mapping and modeling in the area. We have obtained updated mapping and
modeling from the City of Fort Collins, and have provided excerpts of the study, “West
Vine Basin Baseline Hydraulics Report”, by Icon Engineering, July 2020 (Ref. 1), which
these recent updates are based on.
Salud Family Health Center
Floodplain Modeling Report Page | 4
Figure 4 – Current City of Fort Collins Floodplain Mapping
(Source: FCMaps, http://gisweb.fcgov.com)
D. Purpose of Study and Background
1. The subject property is to be developed, and grading will occur within the site to direct
flood flow safely through the site as shown on the Floodplain Workmap provided in
Appendix C. The purpose of this study is to document the proposed changes to the
current floodplain encroaching the development site.
2. The site grading design is primarily influenced by the “Southeastern Flowpath – Reach 3”,
which runs along the east side of the existing building. Grading along the east side of the
building has been designed to ensure 18-inches of freeboard from building finished floor
elevation to 100-year water surface elevation at the building upstream edge.
3. Site grading also is influenced to a lesser degree by the “Southern Flowpath – OF 2”. This
flowpath runs along the western portion of the site and through the onsite detention
pond required to meet onsite storm drainage criteria. The pond is fairly large in surface
area but relatively shallow. The pond has been modeled as ineffective conveyance up to
Study
Site
Salud Family Health Center
Floodplain Modeling Report Page | 5
the spillway elevation of the pond. Unfortunately, site grading requirements have forced
the pond to be located at a location within the current effective floodplain model that is
shown as a confluence. Because of this it was necessary to shift the confluence node in
the proposed conditions model. Due to this shift we have also eliminated cross-sections
9380 and 9442 in the proposed conditions model. The location of the proposed onsite
detention pond has, perhaps, increased the complexity of the proposed conditions model;
however, we could not relocate the onsite pond to accommodate a more simplistic
hydraulic mode.
4. There is a lateral weir in the current effective model which is shown pass approximately
26 cfs from the Southern Flowpath – Reach OF2 to the Southeastern Flowpath – Reach 3.
This 26 cfs directed from east to west across the proposed development site will be
maintained. Please see Figure 5, below.
5. Grading of a landform along the northern portion of the site will maintain the current flow
directed from the Southern Flowpath-Reach OF2 lateral weir as shown in Figure 5. Flow
from this lateral weir is directed east, into the Southeastern Flow Path – Reach 3. In the
current effective model, this flow.
Figure 5 – ICON July 2020 Final Workmap (Ref. 3)
Study
Site
Lateral
Weir
Salud Family Health Center
Floodplain Modeling Report Page | 6
II. STUDY LIMITS AND MAPPING
A. Study Limits, Mapping
1. The project site is located just west of the North Taft Hill Road crossing of the West Vine
Floodplain, “Southeastern Flowpath – Reach 3” and “Southern Flowpath – OF 2”. Due to
the proposed site grading and redirection of flow through the development site,
flowpaths have been revised. Because of this, modeling cross-sections could not be held
at the same locations as in the current effective model.
2. Proposed model cross-sections are based on field surveyed topography as well as
proposed grading of the development site. Field survey of the site is referenced to the
NAVD-88 datum.
3. Study limits for “Southern Flowpath – OF 2” are from cross-section 154 to cross-section
615. Note, however, that due to the proposed site grading and redirection of flow
through the development site, flowpaths have been revised. Current Effective section 154
is in the vicinity of proposed conditions cross-section 84. Current Effective section 615
was not changed with the proposed conditions model, but has be restationed and
renamed cross-section 527 due to a shorter flowpath in the proposed conditions model.
For the “Southeastern Flowpath – Reach 3” Current Effective section 4737 is in the vicinity
of proposed conditions cross-section 4779. Current Effective section 5360 was not
changed with the proposed conditions model, and has not been restationed or renamed
and remains cross-section 5360 (although the flowpath has changed, the overall length of
the flowpath has remained the same in the proposed conditions model).
4. Control points utilized with the survey completed for the project are shown in Figure 6,
and are per the preliminary plan set:
Figure 6 – Project Benchmark Data
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Floodplain Modeling Report Page | 7
III. HYDROLOGY AND HYDRAULICS
A. Hydrology
1. The City of Fort Collins Stormwater Utility has provided Northern Engineering with the
final version of the Icon Engineering West Vine Basin flood study (Ref. 3), as discussed
above. This model has been as the basis for all hydraulic modeling. The proposed grading
and changes due to the proposed development will not alter regional hydrology or
effective flood discharges.
2. Please see Table 1, below, summarizing effective and revised 100-year discharges with the
“Southern” and “Central” Flowpaths which are influenced by the proposed project.
Table 1 – Effective and Proposed Condition 100-Year Discharge Summary
Reach River Sta Q Total
(cfs)
Reach 2 9380 389
Reach 2 9442 389
Reach 2 9577 389
Reach 2 9672 389
Reach 2 9784 389
Reach 2 9878 389
Reach 2 10000 389
Reach River Sta Q Total
(cfs)
OF 2 615 146
OF 2 589 146
OF 2 438 146
OF 2 328 138
OF 2 262 125
OF 2 208 121
OF 2 154 120
Reach River Sta Q Total
(cfs)
Reach 3 5360 122
Reach 3 5277 122
Reach 3 5175 122
Reach 3 5005 122
Reach 3 4737 122
Southern Flowpath - Reach 2
Southern Flowpath - OF 2
Southeastern Flowpath - Reach 3
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Floodplain Modeling Report Page | 8
B. Hydraulics
1. The City of Fort Collins Stormwater Utility has provided Northern Engineering with the
final Icon Engineering West Vine Basin flood study, completed in July 2020, as discussed
above, in HEC-RAS format. This model has been utilized as the source of baseline
modeling for all floodplain hydraulics for the proposed development site.
2. The Icon Engineering study model model was run on the computer program HEC-RAS
Version 5.0.7, by the U.S. Army Corps of Engineers and saved as the Duplicate Effective
model. Please see complete HEC-RAS model input files provided on disk with this
submittal.
3. A Proposed Conditions model was also run on the computer program HEC-RAS Version
5.0.7, by the U.S. Army Corps of Engineers. Proposed grading of the proposed with the
project, has been reflected in updated cross-sections through the project site in the
Proposed Conditions model.
4. The flow condition of the proposed model reach is steady flow, and the flow regime of the
proposed model reach is subcritical.
5. Manning’s n-values in the Proposed Conditions model for both channel and overbank
areas range from 0.032 to 0.060, based on anticipated land cover and conditions of the
development project. The Current Effective model utilized Manning’s n-values in channel
and overbank areas generally ranging from 0.030 to 0.070, as the existing site consists of
unmaintained areas with land cover ranging from high natural grasses to shrubs and trees.
The proposed condition model reflects maintained landscaped areas with grasses and
small shrubs.
IV. DISCUSSION OF RESULTS
A. Hydraulic Modeling Results
1. Results of and Proposed Conditions (PC) HEC-RAS modeling are shown along with Current
Effective (EFF) model information, are summarized in the Map Model Agreement table
provided on disk. Please also see full HEC-RAS model files provided on disk.
B. Mapping Changes
1. Please see the Floodplain Workmap provided in Appendix C, which shows 100-
year floodplain mapping changes that are to occur in the Proposed model. For
comparison, please see the July 2020 Icon Engineering West Vine Basin flood
study workmap provided in Appendix A.
2. Horizontal and vertical tie-in at the downstream end of the project is shown in the
Floodplain Workmap.
3. A new 0.5-ft floodway has been mapped through the proposed development
project site, which ties in with the 0.5-ft floodway of the draft current effective
model as shown on the Floodplain Workmap provided in the Appendix.
Salud Family Health Center
Floodplain Modeling Report Page | 9
V. REGULATION COMPLIANCE
A. Compliance with Standards
1. Floodplain design proposed with the Salud Family Health Center complies with the City of
Fort Collins Master Drainage Plan for the West Vine Basin.
2. There are no FEMA regulatory floodplains associated with the Salud Family Health Center
development. However, the project is impacted by the West Vine Floodplain, which is a
City regulated floodplain. All provisions within Chapter 10 of the City Municipal Code shall
be adhered to.
Salud Family Health Center
Floodplain Modeling Report Page | 10
References
1. West Vine Basin Baseline Hydraulics Report, West Vine Basin, Icon Engineering, July 2020.
2. Final Drainage Report for Salud Family Health Center, February 3, 2021 Northern
Engineering. (Currently Under Review)
APPENDIX A
Current Effective Floodplain Workmap (West Vine Basin 100-year
Floodplain Workmaps, Provided by City of Fort Collins Stormwater
Utility, July 2020)
0+005+00
10+0015+0020+00
25+000+005+0010+00 15+0020+0025+0030+0035+0040+0045+0050+0055+0060+0065+0070+0075+0080+00
85+00
90+0095+
0
0
1
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25+0030+0035+0040+0045+000+005+000+000+005
+
0
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1
0
+
0
0
15+00
LAPORTE AVE SUNSET STHOLLYWOOD STMULBERRY STOVERLAND TRLTAFT HILL RDLAPORTE AVE
Hollywood Irish Detention Pond
CITY OF FORT COLLINSLARIMER COUNTYCITY OF FORT COLLINS
LARIMER COUNTY
LARIMER COUNTY
CITY OF FORT COLLINS
CITY OF FORT COLLINSLARIMER COUNTYCITY OF FORT COLLINS
3' x 6' RCBC
24" RCP
LARIMERCOUNTY
N IMPALA DRPoudre High School
CHERRY ST
Central Flow Path - Reach 5
Central Flow Path - Reach 6
Southern Flow Path - Reach PHS Split
Southern Flow Path - Reach 2
Southern Flow Path - Reach 3
Southern Flow Path - Reach High School OF
Southern Flow Path - Reach 4
Southern Flow Path - Reach Overland OF Southern Flow Path - Reach 5
Southern Flow Path - Reach 6 LARIMER COUNTYCentral Flow Path - Reach Cherry Sunrise Central Flow Path - Reach Cherry Sunrise
328 / 5,044.67262/5,044 .5 8
438 / 5,04
4
.
8
4154 / 5,044.005140
5130 505050405120
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50805
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6
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P le a s a n t V a lley
a n d L a k e C a nal
Lari me r C ountyC a n a lN o2P lea s a n t V alley
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Ne w M e r c e r D i t c h3802 / 5,082.753766 / 5,082.243874 / 5,084.902259 / 5,065.56
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3227 / 5,076.67
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11405 / 5,057.6111146/5,057.5310338/5,050.86
10036/5,049.99
11111 / 5,057.3111302/5,057.5711646/5,059.8511200 / 5,057.5360 /5,062.59
Cross Section
Stream Centerline
Lateral Structure
Canal
Culvert under Roadway
))))Bridge
NFHL Political Boundary
Effective Floodway
Effective 100 Year Floodplain
Effective <=1 Ft
Proposed Flood Zones
0.5' Floodway
100-Year Floodplain
100-Year Shallow Flooding (1' Depth)
NFHL Flood Zones
100-Year Floodplain
Floodway
500-Year Floodplain
Major Contour - 10'
Minor Contour - 2'
Figure 1- South
Figure 2- North Figure3 - East
West Vine Basin100 - Year Floodplain Workmap
µ0 200 400 600 800100Feet
Date: 7/20/2020
0+005+00
10+0015+0020+00
25+000+005+00
10
+
0
0
15+0020+00
25+0030+00
35+0040+0045+0050+0055+00
60+0065+0070+0075+0080+
0
0
85+00
90+0095+
0
0
1
0
0
+
0
0
1
0
5
+
0
0
110
+
0
0
115+00120+001
2
5
+
0
0
130+00
135+001
4
0
+
0
0
14
5
+
0
0
15
0
+
0
0
155+001
6
0
+
0
0165+0017
0
+
0
0
175+00180+0018
5
+
0
0
0+005+0010+0015+0020+00
25+0030+0035+0040+0045+000+005+000+005+0010+0015+0020+000+005+0010+00
15+0020+0025+0030+0035+000+00
5+00
10+00
15+0020+0025+00
30+0035+0040+00
45+0050
+
0
0
0+00
5+00
0+00
5+00
0+005+000+005
+
0
0
1
0
+
0
0
15+00 0+005+0010+00
15+0020+0025+00SUNSET STW VINE DR N TAFT HILL RDHILLCREST DRLIBERTY DR
LANCER DR
Hollywood Irish Detention Pond
CITY OF FORT COLLINSLARIMER COUNTYCITY OF FORT COLLINS
LARIMER COUNTY
LARIMER COUNTY
CITY OF FORT COLLINS
CITY OF FORT COLLINS
LARIMER COUNTY
6' x 3' RCBC
24" RCP
CITY OF FORT COLLINS
LARIMER COUNTY
SUNRISE LNN BIRCHWOODRDNorthern Flow Path - Reach North 1
Northern Flow Path - Reach 1
Northern Flow Path - Reach 2
Central Flow Path - Reach Cherry Sunrise
Central Flow Path - Reach 5
Southern Flow Path - Reach 1
Northeastern Flow Path - Reach 1
Central Flow Path - Reach 3
Central Flow Path - Reach 2
Southern Flow Path - Reach 2
Southern Flow Path - Reach OF 2
Southeastern Flow Path - Reach 3
Southeastern Flow Path - Reach 2
Southeastern Flow Path - Reach 4
Southeastern Flow Path - Reach 5
Central Flow Path - Reach 1
Southeastern Flow Path - Reach 1
Vine OverflowFlow Path - Reach Overflow
Central Flow Path - Reach 6
Southern Flow Path - Reach PHS Split
Southern Flow Path - Reach 3
1946 / 5,063.34
12422 / 5,064.711101 / 5,070.181
2
2
0
9
/
5
,
0
6
3
.
0
3 5183/5,017.78382 /5,042.665183 / 5,017.7850
9
0
50
8
0
5020
5010
5060505050405030504050305070506050
6
0 50505040
5030 5030502050705090
506050505050
5020
5090 50905080
50805080 50605070 50505060
5
0
6
0 50605050505050
5
0 50505030
5040
5040
5040
50305020
5030
5030
5030
5030
5000
5010 50005050
5030
5030
5010
5010
LarimerCountyCan
a
l
N
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w
Merc
er
D
itc
h La
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me
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Co
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n
t
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Ca
n
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No2NewMercerDitch
NewMercerDitch
L a ri m e r C o unty Ca na l No 2
2259 / 5,065.56
12542
/
5
,065
.20
2157 / 5,064.63
1828 / 5,063.042941 / 5,072.592355 / 5,066.46
12331
/
5
,064
.043099 / 5,074.871360/
5,0
7
2.7
1
3148/5,075.532439
/5,066.422888 / 5,072.293063 / 5,073.9524
1
3
/
5
,
0
6
6
.
7
8
3316 / 5,073.961910 / 5,068.961758 /5,063.04 599 / 5,067.702600 / 5,029.48456 / 5,067.051018 / 5,069.521789 / 5,067.282531 / 5,029.172467 / 5,028.75
3437 / 5,073.97
3187 /5,076.00752 / 5,068.312626/5,029.69624 / 5,036.81
3428 / 5,080.56
3227 / 5,076.67
2808 / 5,073.943802/5,082.751707 /5,0
6
3.0
7
12
2
1
/
5
,
0
7
0
.
9
8
683 / 5,037.25
2574/5,073.72894 / 5,068.921849 / 5,068.131323 / 5,071.9819
4
9
/
5
,
0
6
9
.
3
4
122 / 5,053.642
603/5,073.94536
0
/
5
,
0
4
8
.
1
7
2 3 8 8/5,028.4011977/5,062.891258 / 5,071.572684 / 5,028.011189 / 5,071.191628 / 5,066.095 43 /5,035.51483 / 5,043.543156 / 5,082.483766/5,082.24
3 3 2 /5 ,065.911433/5,073.40203 /5,038.13544 / 5,044.42723 /5,037.46
312 /5,04 0.89328 / 5,044.674444 / 5,074.59458 / 5,033.38
262 / 5,044.58
10
4
8
/
5
,
0
6
9
.
4
83874 / 5,084.90615/5,048.68
562 / 5,034.45
4087 / 5,085.383387 / 5,085.07439/5,034.57
5175 / 5,045.81639 / 5,034.73
3646/5,035.531510 / 5,066.1026/5,051.631808 / 5,022.18696 / 5,034.79
438 / 5,04
4
.
8
4343/5,057.103580 / 5,034.913794/5,037.28
2235/5,027.742536 / 5,076.52208 /5,044.472764 / 5,078.772339 / 5,074.11237/5,064.261458/5,066.114263 / 5,086.725277/5,045.894650 / 5,076.36181/5,050.50 26
9
5
/
5
,
0
2
9
.
7
42946 / 5,080.912136/5,073.62163 / 5,035.884239 / 5,041.15649 / 5,046.13154/5 ,0 4 4 .0 02159 / 5,073.651843 / 5,075.371647 / 5,073.472342 / 5,028.04238 /5,039.31668 / 5,059.622055 / 5,077.274349 / 5,088.313
7
02
/
5,035.941
2
3
9
/5,065.64479 / 5,059.281468 / 5,073.436
9
3
/5,066.301728 / 5,062.931756 / 5,025.283244 / 5,033.58835/5,049.361909 / 5,064.873398 / 5,034.78285/5,056.571826 / 5,025.772086 / 5,072.094354 / 5,042.06756/5,048.38965/5,064.022
0
81/5,027.10407/5,057.664157 / 5,040.25
9
2
2
/
5
,
0
6
8
.
3
52246/5,066.79792 / 5,061.214356 / 5,074.061844 / 5,064.224737 / 5,042.691019/5,064.332734/5,030.0
4885/5,051.532332 / 5,024.864258 / 5,074.041182 / 5,017.941189 / 5,059.421384 / 5,018.741906/5,026.242526/5,068.71206/5,055.554094 / 5
,
0
4
0
.
1
5
13
5
8
/
5
,
0
7
3
.
2
2
391
9
/
5
,
0
3
9
.
1
5 1668 / 5,021.3155
7
/
5
,
0
6
4
.
9
7 888 / 5,062.113693 /5,074.06
5005 /
5
,
0
4
5
.
4
2
11737/5,062.01399
7
/
5
,
0
3
9
.
9
4
1671 / 5,025.032849 / 5,031.426113 / 5,024.475975 / 5,023.731 5 34 /5,062 .8 7 6277 / 5,025.702062 / 5,024.015862 / 5,023.056419 /
5
,
0
2
7
.
0
4
1562 / 5,024.726469/5,027.473884 / 5,085.115743 / 5,022.342043
/
5
,065
.88525 / 5,059.555624 / 5,021.003024/5,032.403113/5,032.656835 / 5,028.78595/5,059.59925 / 5,056.552634 / 5,069.822
1
5
6
/
5
,
0
27.696524 / 5,027.662394 / 5,067.521645/5,063.07
9
7
8
4
/
5
,
0
4
7
.
0
3
8705 / 5,038.48
11512 / 5,058.424492 / 5,04
2.
3
2
4079 / 5,074.077770/5,0
34.317
8
7
5
/
5
,
0
3
4
.
6
9
11722/5,060.123957 / 5,074.074211 / 5,074.077379 / 5,034.188
0
4
1
/
5,0
3
5.4
0 6963 / 5,030.23622/5,055.767137/5,031.7611405 / 5,057.617021/5,030.537329 / 5,033.51301 / 5,062.89589/5 ,0 4 6 .0 5
96
7
2
/
5
,
0
4
6
.
6
2270 / 5,050.5695
7
7
/
5
,
0
4
6
.
0
3
11302/5,057.577069/
5,031.49
2 4 2 /5,050.54
9878
/
5
,
0
4
7
.
4
2
11646/5,059.851
0
6
1
9
/
5
,
0
5
1
.
8
3
11146/5,057.5311200 / 5,057.5311111 / 5,057.311
0
7
9
8
/
5,
0
5
3.85437/5,055.767175 / 5,032.425430 / 5,020.4410
9
56
/
5,05
5.7
5370 / 5,055.765396 / 5,018.97109
0
4
/
5,05
4.9
8 5498 / 5,020.778915 / 5,040.05 7560/5,034.3310
0
0
0
/
5
,
0
4
7
.
8
3
94
4
2
/
5
,
0
4
4
.
7
9
938
0
/
5
,
0
4
3
.
8
6
10445/5,050.9
4
10338 /5,050.86
10036/5,049.99
8341/5,036.59
8526 / 5,037.63
9138 / 5,042.41 7485/5,034.327459 / 5,034.298209 / 5,035.9
6
60/5,062.59
Cross Section
Stream Centerline
Canal
Lateral Structure
Culvert under Roadway
))))Bridge
Major Contour - 10'
Minor Contour - 2'
NFHL Political Boundary
NFHL Flood Zones
100-Year Floodplain
Floodway
500-Year Floodplain
Proposed Flood Zones
0.5' Floodway
100-Year Floodplain
100-Year Shallow Flooding (1' Depth)
Effective Flood Zones
0.5 FOOT FLOODWAY
100 YEAR FLOODPLAIN
<= 1FT
Figure 1- South
Figure 2- North Figure3 - East
West Vine Basin100 - Year Floodplain Workmap
µ0 200 400 600 800100Feet
Date: 7/20/2020
))))
0
+
0
0
5+0
0
10
+
0
0
15+0020+00
25+0030+00
35+0040+0045+0050+0055+00
60+0065+0070+0075+0080+
0
0
85+00
90+0095+
0
0
1
0
0
+
0
0
1
0
5
+
0
0
110
+
0
0
115+00120+001
2
5
+
0
0
130+00
135+001
4
0
+
0
0
14
5
+
0
0
15
0
+
0
0
155+001
6
0
+
0
0165+0017
0
+
0
0
175+00180+0018
5
+
0
0
0+
0
0
5+0010+0015+0020+00
25+0030+0035+0040+0045+000+005+000+005+0010+00
15+0020+0025+0030+0035+000+00
5+00
10+00
15+0020+0025+00
30+0035+0040+00
45+0050
+
0
0
0+00
5+00
0+00
5+00
0+005+000+005+000+005+0010+00
15+0020+0025+00N TAFT HILL RDLIBERTY DR N SHIELDS STW VINE DR
ELM ST
CHERRY ST
LANCER DR
AZTEC DRLAPORTE AVE LARIMER COUNTYLARIMER COUNTY
LARIMER COUNTY
CITY OF FORT COLLINS
LARIMER COUNTY
CITY OF FORTCOLLINS
24" RCP
CITY OF FORT COLLINS
LARIMER COUNTY
CITY OF FORTCOLLINSLARIMERCOUNTY
LARIMER COUNTY
CITY OF FORTCOLLINS CITY OF FORTCOLLINSWest Vine OutfallFlow Path - Reach 1
Vine Overflow Flow Path - Reach Split North
Vine Overflow Flow Path - Reach Split South
West Vine OutfallFlow Path - Reach 2
Vine Overflow Flow Path - Reach Overflow
West Vine OutfallFlow Path - Reach 3
Northern Flow Path - Reach 1
Southern Flow Path - Reach 1
Northeastern Flow Path - Reach 1
Central Flow Path - Reach 3
Central Flow Path - Reach 2
Southeastern Flow Path - Reach 4
Southeastern Flow Path - Reach 5
Southern Flow Path - Reach 2
Southern Flow Path - Reach OF 2 Southeastern Flow Path - Reach 3
Southeastern Flow Path - Reach 2
Southeastern Flow Path - Reach 1
Central Flow Path - Reach 1
Central Flow Path - Reach 5237 / 5,064.262531 / 5,029.172 3 88/5,028.40785 / 5,013.84
543 /5,035.51
871 /5,01 4.18382 /5,042.665010
5000
4980
5060
5050
5040
5030 5020501050405020501050
1
0
5020
5000505050505060
5
0
6
0
506050605060506050
6
0
50605050 505050
5
0 50505050
50505030
5030
50305040
5040
5040
5030
5020
5030
5030
5030
503050305030
503050105010
5000
500
0
4990
4990
4990
4990
50605060
5030
5030
5000
5000
50055000500
049904985
5005
4
9
9
5
5005
50055000LarimerCountyCan
a
l
N
o
2
New
M
er
c
e
r
DitchN e w M e r c e r D i t c h
LarimerCounty
CanalNo2
La r im erCountyCan a lN o2332 / 5,065.91241
/
4
,989
.13175
/
4
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.93
115/4
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4
,
9
8
6
.
5
8
100/4,9
8
6
.
2
5
78/4,984.3073/4,
9
8
4
.
1
1
2758 /5 ,0 0 0 .0 7
50/4,982.2
11447 / 4,992.55987 / 5,021.59
2859 / 5,
0
0
0
.
6
91661 / 4,993.522825 /
5
,
0
0
0
.
4
0
1731 / 4,99
4.
6
5
1813 / 4,995.
2
3
45 /4,9
8
1
.
7
0
1916/4,995.941064 / 4,990.98
2600 / 5,029.48403
/
4
,989
.82
559 / 5,018.32
757 / 4,99
0
.
2
0
1691 / 4,993.702467 / 5,028.75
2 4 7 0 /4 ,9 9 8 .4 02626/5,029.69624 / 5,036.81 2625 / 4,999.522120 / 4,996.771204 / 5,023.66
2274 / 4,997.45
683 / 5,037.25 194 / 5,010.51731 / 5,019.66
710 / 5,013.70 266 / 5,010.58437 / 5,011.07122 / 5,053.64536
0
/
5
,
0
4
8
.
1
7 563 / 5,011.992684 / 5,028.01293 / 5,012.28483 / 5,043.5420 3/5,038.13544 / 5,044.42723 /5,037.46
312 /5,04 0.89328 / 5,044.67
458 / 5,033.38 104/5,010.06262 / 5,044.58 639 / 5,013.8964
5
/
5
,
0
1
3
.
1
7
615/5,048.68
562 / 5,034.45 502 / 5,013.222907 / 5,001.04
411 / 5,012.94439/5,034.57
5175 / 5,045.81733
/5,014.98639 / 5,034.73
3646/5,035.533049 /5,002.9226/5,051.631808 / 5,022.18916 / 5,016.90696 / 5,034.79
3153 / 5,003.41
438 / 5,04
4
.
8
4343/5,057.103580 / 5,034.913794/5,037.28
2235 / 5,027.74208/5,044.47
5277/5,045.89
3223 / 5,003.86
3263 / 5,004.47
181/5,050.50 26
9
5
/
5
,
0
2
9
.
7
4163 / 5,035.884239 / 5,041.15
3194 / 5,003.76
649 / 5,046.13154/5 ,0 4 4 .0 0 2342 / 5,028.04238 /5,039.31668 / 5,059.6237
0
2
/
5,035.94479 / 5,059.283373 / 5,005.06
3477 / 5,005.38
3651 / 5,006.15
1756 / 5,025.283244 / 5,033.58835/5,049.363398 / 5,034.78285/5,056.571826 / 5,025.774354 / 5,042.06756/5,048.382
0
81/5,027.10407/5,057.664157 / 5,040.25 352 / 5,010.804737 / 5,042.69 220 / 5,011.602734/5,030.0
4885/5,051.532332 / 5,024.861182 / 5,017.941384 / 5,018.741906/5,026.24206/5,055.554094 / 5
,
0
4
0
.
1
5
391
9
/
5
,
0
3
9
.
1
5 98 / 5,010.571668 / 5,021.315005 /
5
,
0
4
5
.
4
2
399
7
/
5
,
0
3
9
.
9
4
1671 / 5,025.032849 / 5,031.426113 / 5,024.475975 / 5,023.736277 / 5,025.702062 / 5,024.015862 / 5,023.056419 / 5,027.041562 / 5,024.721
4
2
0
/
5
,024.565183/5,017.784851 / 5,015.316469/5,027.474361 / 5,014.265743 / 5,022.345000 / 5,015.50525 / 5,059.555624 / 5,021.004285 /
5
,014
.113024/5,032.403113/5,032.656835 / 5,028.784
220/5,013.714645 / 5,014.87595/5,059.594541 / 5,014.804728 / 5,014.9741
1
5
/
5
,
0
1
3
.
5
9
2
1
5
6
/
5
,
0
27.696524 / 5,027.66400
4
/
5
,
0
1
3
.
4
5
9
7
8
4
/
5
,
0
4
7
.
0
3
8705 / 5,038.48
4492 / 5,04
2.
3
2
7770/5,0
34.313746 / 5,010.77
7
8
7
5
/
5
,
0
3
4
.
6
9 7379 / 5,034.183770 / 5,012.43
8
0
4
1
/
5,0
3
5.4
0 6963 / 5,030.237137/5,031.767021/5,030.537329 / 5,033.51589/5 ,0 4 6 .0 59672 / 5,046.62270 / 5,050.563939 / 5,013
.
4
3
95
7
7
/
5
,
0
4
6
.
0
3 7069/
5,031.49
2 4 2 /5,050.54
9878
/
5
,
0
4
7
.
4
2
3792 / 5,012.87
1
0
6
1
9
/
5
,
0
5
1
.
8
3
3826 / 5,013.13
437/5,055.767175 / 5,032.425430 / 5,020.44370 / 5,055.765396 / 5,018.975498 / 5,020.778915 / 5,040.05 7560/5,034.3310
0
0
0
/
5
,
0
4
7
.
8
3
107
9
8
/
5,
0
5
3.
8
51
0
9
5
6
/
5
,
0
5
5
.
7
5
94
4
2
/
5
,
0
4
4
.
7
9
938
0
/
5
,
0
4
3
.
8
6
1090
4
/
5,0
5
4.98
10445/5,050.9
4
11146/5,057.5310338 /5,050.86
10036/5,049.99
11111 / 5,057.318341/5,036.59
11302/5,057.578526 / 5,037.63
11200 / 5,057.539138 / 5,042.41 7485/5,034.327459 / 5,034.298209 / 5,035.9
6
Cross Section
Stream Centerline
Canal
Lateral Structure
Culvert under Roadway
))))Bridge
As-Built Channel Grading
Major Contour - 10'
Minor Contour - 2'
NFHL Political Boundary
NFHL Flood Zones
100-Year Floodplain
Floodway
500-Year Floodplain
Proposed Flood Zones
0.5' Floodway
100-Year Floodplain
100-Year Shallow Flooding (1' Depth)
Effective Flood Zones
0.5 FOOT FLOODWAY
100 YEAR FLOODPLAIN
<= 1FT
Figure 1- South
Figure 2- North Figure3 - East
West Vine Basin100 - Year Floodplain Workmap
µ0 200 400 600 800100Feet
Date: 7/20/2020
APPENDIX B
Current Effective Floodplain Mapping – Fort Collins GIS Mapping
&KZdK>>/E^'/^DWW/E'—&DW^
ŚƩƉƐ͗ͬͬŐŝƐǁĞď͘ĨĐŐŽǀ͘ĐŽŵͬ
APPENDIX C
Proposed Conditions Floodplain Workmap
APPENDIX D
Project Parcel Mapping – Larimer County Land Information Locator
>Z/D ZKhEdzWZ >DWW/E'—>E/E&KZDd/KE>KdKZ
ŚƩƉƐ͗ͬͬŵĂƉƐϭ͘ůĂƌŝŵĞƌ͘ŽƌŐͬ
APPENDIX E
Project Development Plan (Final Grading Plan)
XXXX
X
XX XXXXX
X
X X
GVXXXXXXXXXX
XXXX X X X X X
X XXXXXXXXX
XX X X X XXX
XXXXXXXXXXXXXXutilXX
EEEEEEEEEEEEEEEEEEEEEE
E
E
EUDUD
TFEEEEEEEE
GABRIEL PROPERTIES, LLC DAVID & GRETCHEN OSBORN 1760 W. LAPORTE AVE, LLC
WILLIAM S. ECKERT
CITY OF FORT COLLINS
LAPORTE AVENUE LLC
LAPORTE AVENUE LLC
JACOB BROADCASTING OF COLORADO
DAVID & GRETCHEN OSBORN
PROPOSED
BUILDING
DAVID & GRETCHEN OSBORN
GABRIEL PROPERTIES, LLC
2' CONCRETE PAN
GRASS SWALE
PROPOSED POND OUTFALL
PROPOSED STORM MH
WITH PUMP
SALUD DRIVELAPORTE AVENUE
LOT 1
LOT 2
LOT 6
LOT 4
LOT 3
LOT 5
7
2
'
R
O
W
5
0
'
-
72' ROW
50' -
RAIN GARDEN 1
DETENTION POND 1
PROPOSED
CONCRETE BOX
CULVERT
TEMPORARY TURN-AROUND
FUTURE ROAD
NATURAL HABITAT
BUFFER ZONE
NATURAL HABITAT
BUFFER ZONE
NATURAL HABITAT
BUFFER ZONE
NATURAL HABITAT
BUFFER ZONE
LOT 7
EXISTING FLOODPLAIN
EXISTING FLOODWAY
EXISTING FLOODPLAIN
EXISTING FLOODWAY
RAIN GARDEN 2
RAIN GARDEN 3
STORM DRAIN 2
SEE SHEET ST1
STORM DRAIN 3
SEE SHEET ST3
STORM DRAIN 1
SEE SHEET ST1
STORM DRAIN 2D
SEE SHEET ST2
STORM DRAIN 2D
SEE SHEET ST2
CALL UTILITY NOTIFICATION CENTER OF
COLORADO
Know what's below.
before you dig.Call
R
SheetSALUD FAMILY HEALTH CENTERDRAWING FILENAME: P:\1067-001\Dwg\Grad\1067-001_OGRAD.dwg LAYOUT NAME: OG1 DATE: Apr 07, 2021 - 9:35am CAD OPERATOR: masonLIST OF XREFS: [1067-001_xSITE] [1067-001_xTOPO] [NES-xborder] [1067-001_xPUTIL] [1067-001_xEXST] [1067-001_KEYMAP] [1067-001_xGRAD_OVERLOT] [1067-001_GRAD-LEG] [1067-001_xFLD]These drawings areinstruments of serviceprovided by NorthernEngineering Services, Inc.and are not to be used forany type of constructionunless signed and sealed bya Professional Engineer inthe employ of NorthernEngineering Services, Inc.NOT FOR CONSTRUCTIONREVIEW SETENGINEERNGIEHTRONRN04/07/2021301 North Howes Street, Suite 100Fort Collins, Colorado 80521www.northernengineering.comPhone: 970.221.4158of 45
NORTH
( IN FEET )
0
1 INCH = 50 FEET
50 50 100 150
KEYMAP
#####
LEGEND:
PROPOSED CONTOUR
EXISTING CONTOUR
PROPERTY BOUNDARY
PROPOSED SPOT ELEVATION 33.43
PROPOSED SLOPES
1.THE SIZE, TYPE AND LOCATION OF ALL KNOWN UNDERGROUND UTILITIES ARE
APPROXIMATE WHEN SHOWN ON THESE DRAWINGS. IT SHALL BE THE
RESPONSIBILITY OF THE CONTRACTOR TO VERIFY THE EXISTENCE OF ALL
UNDERGROUND UTILITIES IN THE AREA OF THE WORK. BEFORE COMMENCING
NEW CONSTRUCTION, THE CONTRACTOR SHALL BE RESPONSIBLE FOR
LOCATING ALL UNDERGROUND UTILITIES AND SHALL BE RESPONSIBLE FOR
FOR ALL UNKNOWN UNDERGROUND UTILITIES.
2.REFER TO THE PLAT FOR LOT AREAS, TRACT SIZES, EASEMENTS, LOT
DIMENSIONS, UTILITY EASEMENTS, OTHER EASEMENTS, AND OTHER SURVEY
INFORMATION.
3.ALL CURB SPOTS SHOWN ARE FLOWLINE ELEVATIONS. ALL OTHER SPOTS ARE
FINISHED GRADE ELEVATIONS.
4.ALL PROJECT DATA IS ON THE CITY OF FORT COLLINS VERTICAL DATUM
NAVD88. SEE COVER SHEET FOR BENCHMARK REFERENCES.
5.THE CONTRACTOR IS RESPONSIBLE FOR FIELD LOCATING AND VERIFYING
ELEVATIONS OF ALL CURBS AND GUTTERS AT THE POINTS OF CONNECTION
SHOWN ON THE PLANS PRIOR TO INSTALLING ANY OF THE NEW
IMPROVEMENTS. IF A CONFLICT EXISTS AND/OR A DESIGN MODIFICATION IS
REQUIRED, THE CONTRACTOR SHALL COORDINATE WITH THE ENGINEER TO
MODIFY THE DESIGN.
6.CONTRACTOR SHALL CONFIRM AND COORDINATE WITH STAMPED
STRUCTURAL DRAWINGS FOR ELEVATIONS AND GRADE CONDITIONS ALONG
BUILDING PERIMETER. NOTIFY OWNER, ARCHITECT, AND ENGINEER(S) OF ANY
DISCREPANCIES PRIOR TO MOBILIZATION.
7.A FLOODPLAIN USE PERMIT SHALL BE REQUIRED FOR EACH SITE
CONSTRUCTION ELEMENT IN THE FLOODPLAIN, INCLUDING BUILDING. THE
FLOODPLAIN USE PERMIT FOR THE BUILDING WILL BE APPROVED AT THE TIME
OF BUILDING PERMIT APPLICATION.
8.SEE THE FLOODPLAIN EXHIBIT (SHEET ####) FOR ADDITIONAL INFORMATION
REGARDING WORK WITHIN THE FLOODPLAIN AND FLOODWAY.
5.NO CONSTRUCTION OR DEVELOPMENT ACTIVITIES SHALL OCCUR WITHIN 450
FEET OF ANY ACTIVE RED-TAILED HAWK NEST SITES DURING THE PERIOD
FROM FEBRUARY 15 THROUGH JULY 15.
NOTES:
2.0%
(47.45
)
EXISTING SPOT ELEVATION
PROPOSED STORM
PROPOSED VERTICAL CURB AND GUTTER
PROPOSED SWALE
CITY OF FORT COLLINS
100-YR FLOODPLAIN
CITY OF FORT COLLINS
100-YR FLOODWAY
1.THE NATURAL HABITAT BUFFER ZONES ARE INTENDED TO BE MAINTAINED IN A
NATIVE LANDSCAPE. PLEASE SEE SECTION 3.4.1 OF THE LAND USE CODE FOR
ALLOWABLE USES WITHIN THE NATURAL HABITAT BUFFER ZONES.
NATURAL HABITAT BUFFER ZONES
OG1 GRADING PLANOVERALL20
46.7046.4246.35
8' SID
E
W
A
L
K
46.38 47.0447.0446.
9
1 46.5410.2%
7.7%
46.42
46.4246.3546.3546.7047.0447.0446.54
46.5446.4346.4310.1%
10.1%
46.35
46.4246.7046.34
47.04
46.
8
3
47.04
46.5446.43
46.33
8.1%
10.2%
46.72
46.87
46.77
46.4846.942.4%2.1%46.6147.1147.1146.9046.782.2%5.7%47.3747.37
47.86
48.01
47.9947.8647.9548.1048.09 47.9410.5%10.2%1.9%6.5' SIDEWALK47.11 UDUDUDX
X
X
XX
X
X
X X X X
GVXXXXXXXXXXXXXXXXXX
XXXXXXLOT 4
LOT 3
RAIN GARDEN 1
MIN. MEDIA SQFT=2118 SQFT
TOTAL VOLUME=4305 CUFT
BOT POND ELEV=4940.2
SPILLWAY ELEV=4941.7
DETENTION POND 1
TOTAL VOLUME=4.73 AC-FT
100-YR VOLUME=3.61 AC-FT
100-YR WSEL=5041.31
WQ VOLUME=0.03 AC-FT
SPILLWAY ELEV=4942.5
43.4540.2044.2243.7344.184
4
.
6
2
4
4
.
6
7
45.1245.054
5
.
4
2
45.
1
8
45.3546.0746.16 45.644
5
.
5
8 45.7745.6745.8545.9445.9344.91
4
4
.
8
1
44.9545.5745.6045.7145.3945.4944.7844.86
4
6
.
3
1
46.35
46.4246.7046.70
46.3546.3546.7046.7046.35
46.4846.54
47.08
47.2346.9146.72
46.87
46.77
46.48
4
6
.
2
5
46.49
46.64
46.6846.5446.20
46.3246.5646.6546.4146.3146.60
45.02
45.01
44.99
45.0545.54
45.69 45.6845.4845.4345.5245.6945.8545.9445.88
45.6745.4645.3745.6145.7845.88
46.71
4
6
.
4
0
4
6
.
7
0
4
6
.
7
044.4244.9544.6544.4843.954
2
.
3
8
47.5047.3147.49
46.9447.1046.9747.5041.3240.2042.84
44.15
47.13STORM DRAIN 2
SEE SHEET ST2
46.88
46.7447.1947.2947.8747.4546.30
45.5437.0037.82
38.6441.
9
2
43.0040.2041.5343.007' SIDEWALK
8' SID
E
W
A
L
K
FFE=47.50
FFE=47.5039.6240.2541.
1
9 41.3139.6040.4839.8140.5337.3337.6139.1144.2045.5945.26???44.4344.0043.6842.4842.9243.1238.5743.0843.00 42.804
2
.
2
1
41.70
4
1
.
7
0
42.9342.8040.204
0
.
2
040.2240.2040.20
40.2040.202.1%2.1%
2.
1
%
2.
1
%7.0%5.7%2.2%
2.7%
3.5
%2.6%2.4%3.4%2.7%2.4%2.1%2.9%
3
.
0%
3.6
%
2.1
%
2
.
1%
1.9%
2.8%
2.8%
2.8%
2.8%
5.5
%5.9%
2.
1
%
3.8
%
1.9%
30.00'
SANITARY
SEWER
EASEMENT
24.00'
EMERGENCY
ACCESS
EASEMENT
4 CONCRETE
CHANNEL
PROPOSED TRASH
ENCLOSURE
1.7%2.7%
2.2%
2.7%11.3%3
.
5%
PROPOSED 100-YR FLOODWAY
PROPOSED 100-YR FLOODPLAIN
STORM DRAIN 3
SEE SHEET ST3
STORM DRAIN 1
SEE SHEET ST1
4.6%5.1%PROPOSED POND
DEPTH GAUGE
6
.
1%41.7041.7044.0042.5042.50
43.82100' CONCRETE
SP
ILLWAYSEE DETA
IL
SHEET
D347.45TBC47.59 47.1446.99 47.15TBC46.6946.9646.84
4
6
.
1
2
4
5
.
6
4 45.5945.83
SEE CROSSING
DETAILED GRADING
THIS SHEET 0.5%4.5
'
S
I
D
E
W
A
L
K2.0%2.0%2.0%2.0%
2.0%2.0%2.0%2.3
%
47.1147.1748.28
48.1849.7549.59
TIE TO EXISTING
DITCH CROSSING
29.50' PEDESTRIAN
ACCESS EASEMENT
24.00' EMERGENCY
ACCESS EASEMENT
36.00'
UTILITY
EASEMENT
47.300.5%
0
.
5%
1.8%
1.9%
83-LF NORTH AMERICAN GREEN
P300 TURF REINFORCEMENT MAT
OR APPROVED EQUAL.
5X5' TYPE L
RIPRAP PAD
5X5' TYPE L
RIPRAP PAD
SheetSALUD FAMILY HEALTH CENTERDRAWING FILENAME: P:\1067-001\Dwg\Grad\1067-001_GRAD.dwg LAYOUT NAME: G1 DATE: Apr 07, 2021 - 9:36am CAD OPERATOR: masonLIST OF XREFS: [1067-001_xFLD] [1067-001_xGRAD_OVERLOT] [1067-001_xPUTIL] [1067-001_xSITE] [1067-001_xTOPO] [1067-001_xEXST] [NES-xborder] [1067-001_GRAD-LEG] [1067-001_KEYMAP] [1067-001_C3D_Proposed]These drawings areinstruments of serviceprovided by NorthernEngineering Services, Inc.and are not to be used forany type of constructionunless signed and sealed bya Professional Engineer inthe employ of NorthernEngineering Services, Inc.NOT FOR CONSTRUCTIONREVIEW SETENGINEERNGIEHTRONRN04/07/2021301 North Howes Street, Suite 100Fort Collins, Colorado 80521www.northernengineering.comPhone: 970.221.4158of 45
LEGEND:
PROPOSED CONTOUR
EXISTING CONTOUR
PROPERTY BOUNDARY
PROPOSED SPOT ELEVATION 33.43
PROPOSED SLOPES
1.THE SIZE, TYPE AND LOCATION OF ALL KNOWN UNDERGROUND UTILITIES ARE
APPROXIMATE WHEN SHOWN ON THESE DRAWINGS. IT SHALL BE THE
RESPONSIBILITY OF THE CONTRACTOR TO VERIFY THE EXISTENCE OF ALL
UNDERGROUND UTILITIES IN THE AREA OF THE WORK. BEFORE COMMENCING
NEW CONSTRUCTION, THE CONTRACTOR SHALL BE RESPONSIBLE FOR
LOCATING ALL UNDERGROUND UTILITIES AND SHALL BE RESPONSIBLE FOR
FOR ALL UNKNOWN UNDERGROUND UTILITIES.
2.REFER TO THE PLAT FOR LOT AREAS, TRACT SIZES, EASEMENTS, LOT
DIMENSIONS, UTILITY EASEMENTS, OTHER EASEMENTS, AND OTHER SURVEY
INFORMATION.
3.ALL CURB SPOTS SHOWN ARE FLOWLINE ELEVATIONS. ALL OTHER SPOTS ARE
FINISHED GRADE ELEVATIONS.
4.ALL PROJECT DATA IS ON THE CITY OF FORT COLLINS VERTICAL DATUM
NAVD88. SEE COVER SHEET FOR BENCHMARK REFERENCES.
5.THE CONTRACTOR IS RESPONSIBLE FOR FIELD LOCATING AND VERIFYING
ELEVATIONS OF ALL CURBS AND GUTTERS AT THE POINTS OF CONNECTION
SHOWN ON THE PLANS PRIOR TO INSTALLING ANY OF THE NEW
IMPROVEMENTS. IF A CONFLICT EXISTS AND/OR A DESIGN MODIFICATION IS
REQUIRED, THE CONTRACTOR SHALL COORDINATE WITH THE ENGINEER TO
MODIFY THE DESIGN.
6.CONTRACTOR SHALL CONFIRM AND COORDINATE WITH STAMPED
STRUCTURAL DRAWINGS FOR ELEVATIONS AND GRADE CONDITIONS ALONG
BUILDING PERIMETER. NOTIFY OWNER, ARCHITECT, AND ENGINEER(S) OF ANY
DISCREPANCIES PRIOR TO MOBILIZATION.
7.A FLOODPLAIN USE PERMIT SHALL BE REQUIRED FOR EACH SITE
CONSTRUCTION ELEMENT IN THE FLOODPLAIN, INCLUDING BUILDING. THE
FLOODPLAIN USE PERMIT FOR THE BUILDING WILL BE APPROVED AT THE TIME
OF BUILDING PERMIT APPLICATION.
8.SEE THE FLOODPLAIN EXHIBIT (SHEET ####) FOR ADDITIONAL INFORMATION
REGARDING WORK WITHIN THE FLOODPLAIN AND FLOODWAY.
5.NO CONSTRUCTION OR DEVELOPMENT ACTIVITIES SHALL OCCUR WITHIN 450
FEET OF ANY ACTIVE RED-TAILED HAWK NEST SITES DURING THE PERIOD
FROM FEBRUARY 15 THROUGH JULY 15.
NOTES:
2.0%
(47.45
)
EXISTING SPOT ELEVATION
PROPOSED STORM
PROPOSED VERTICAL CURB AND GUTTER
PROPOSED SWALE
CITY OF FORT COLLINS
100-YR FLOODPLAIN
CITY OF FORT COLLINS
100-YR FLOODWAY
1.THE NATURAL HABITAT BUFFER ZONES ARE INTENDED TO BE MAINTAINED IN A
NATIVE LANDSCAPE. PLEASE SEE SECTION 3.4.1 OF THE LAND USE CODE FOR
ALLOWABLE USES WITHIN THE NATURAL HABITAT BUFFER ZONES.
NATURAL HABITAT BUFFER ZONES
KEYMAP
CALL UTILITY NOTIFICATION CENTER OF
COLORADO
Know what's below.
before you dig.Call
R
NORTH
G2G1
G3
MATCH LINE - SEE SHEET G2MATCH LINE - SEE SHEET G3
G1 GRADING PLAN21
UDE
E
ELEC
XXXXXXXXXXXXOHEOHEOHEOHEOHEXXXXXXXXXX
X
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ELEC
T
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EEEEEEEEEEEEEEEEEEEEEW
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SSSSSS SS GGG WWWWWWWWWWLAPORTE AVENUE LLC
LOT 5
46.6546.4146.3146.60
45.02
45.01
44.99
45.0545.54
45.69 45.6845.4845.3745.6145.7845.88
46.71
4
6
.
4
047.1345.3545.2745.29
44.97
45.17
44.87
46.85
46.6146.4946.57
45.1543.7343.4143.28
42.
9
4
42.72
42.99
43.3343.45
43.4743.81
44.03
43.70
43.
7
3
43.79
44.5945.3045.84
4
6
.
8
5
45.2145.2745.41
44.1343.9944.1944.0744.02
44.04
44.3644.6044.8944.9344.17
44.2444.3043.4141.72
44.89
44.18
44.66
44.4544.62
44.65
44.51
44.25
43.30
41.
5
341.6041.6946.24
47.62
4
8
.
9
4
47.5244.7845.4644.6149.3147.6847.4245.29
46.88
46.7447.1947.2947.8745.54
45.33
HP 43.006' SIDEWALK6' SIDEWALK6' SID
E
W
A
L
K 5'
S
IDEWALK
7'
S
I
D
EW
A
L
K 6'
S
IDEWALK 5' SIDEWALK8' SIDEWALKFFE=47.50
3.6
%
2.1
%
2
.
1%
20.00' UTILITY
EASEMENT
10.00' POWER LINE
EASEMENT (BOOK
1599 PAGE 612)
20.00'
EMER
G
E
N
C
Y
ACCE
S
S
EASE
M
E
N
T
41.72
41.7241.8043.6042.7843.72
43.
0
0
43.00
43.00
43.0043.0044.5044.50
44.6044.402.1
%
3
.
5%
2.1
%5.9%6.4%
7.
4
%
3.7%3.8%3.7%2.1%2.1%2.1
%
2.1%
PROPOSED 100-YR FLOODWAY
PROPOSED 100-YR FLOODPLAIN
RAIN GARDEN 2
MIN. MEDIA SQFT=612 SQFT
TOTAL VOLUME=875 CUFT
BOT POND ELEV=4941.8
SPILLWAY ELEV=4942.8
STORM DRAIN 2
SEE SHEET ST2
1.7%
2.4%
3.7%
5.3%
6
.
1%47.15TBC46.6946.960.5%2.0%47.0147.0147.5047.508.2%
8.2%
44.57
44.68
44.8644.8944.68 44.9644.98
50.9251.34
0.8%0.7%
2.0%
2.1%
45.6946.46
46.61
45.88
47.30
47.24
47.18
46.8247.0046.4746.67
RAIN GARDEN 3
MIN. MEDIA SQFT=462 SQFT
TOTAL VOLUME=658 CUFT
BOT POND ELEV=4943
SPILLWAY ELEV=49448.0%11.2%MAPLE STREET45.3045.4845.8446.16
46.16 45.8045.49
46.248.0%11.2%45.32SheetSALUD FAMILY HEALTH CENTERDRAWING FILENAME: P:\1067-001\Dwg\Grad\1067-001_GRAD.dwg LAYOUT NAME: G2 DATE: Apr 07, 2021 - 9:36am CAD OPERATOR: masonLIST OF XREFS: [1067-001_xFLD] [1067-001_xGRAD_OVERLOT] [1067-001_xPUTIL] [1067-001_xSITE] [1067-001_xTOPO] [1067-001_xEXST] [NES-xborder] [1067-001_GRAD-LEG] [1067-001_KEYMAP] [1067-001_C3D_Proposed]These drawings areinstruments of serviceprovided by NorthernEngineering Services, Inc.and are not to be used forany type of constructionunless signed and sealed bya Professional Engineer inthe employ of NorthernEngineering Services, Inc.NOT FOR CONSTRUCTIONREVIEW SETENGINEERNGIEHTRONRN04/07/2021301 North Howes Street, Suite 100Fort Collins, Colorado 80521www.northernengineering.comPhone: 970.221.4158of 45
LEGEND:
PROPOSED CONTOUR
EXISTING CONTOUR
PROPERTY BOUNDARY
PROPOSED SPOT ELEVATION 33.43
PROPOSED SLOPES
1.THE SIZE, TYPE AND LOCATION OF ALL KNOWN UNDERGROUND UTILITIES ARE
APPROXIMATE WHEN SHOWN ON THESE DRAWINGS. IT SHALL BE THE
RESPONSIBILITY OF THE CONTRACTOR TO VERIFY THE EXISTENCE OF ALL
UNDERGROUND UTILITIES IN THE AREA OF THE WORK. BEFORE COMMENCING
NEW CONSTRUCTION, THE CONTRACTOR SHALL BE RESPONSIBLE FOR
LOCATING ALL UNDERGROUND UTILITIES AND SHALL BE RESPONSIBLE FOR
FOR ALL UNKNOWN UNDERGROUND UTILITIES.
2.REFER TO THE PLAT FOR LOT AREAS, TRACT SIZES, EASEMENTS, LOT
DIMENSIONS, UTILITY EASEMENTS, OTHER EASEMENTS, AND OTHER SURVEY
INFORMATION.
3.ALL CURB SPOTS SHOWN ARE FLOWLINE ELEVATIONS. ALL OTHER SPOTS ARE
FINISHED GRADE ELEVATIONS.
4.ALL PROJECT DATA IS ON THE CITY OF FORT COLLINS VERTICAL DATUM
NAVD88. SEE COVER SHEET FOR BENCHMARK REFERENCES.
5.THE CONTRACTOR IS RESPONSIBLE FOR FIELD LOCATING AND VERIFYING
ELEVATIONS OF ALL CURBS AND GUTTERS AT THE POINTS OF CONNECTION
SHOWN ON THE PLANS PRIOR TO INSTALLING ANY OF THE NEW
IMPROVEMENTS. IF A CONFLICT EXISTS AND/OR A DESIGN MODIFICATION IS
REQUIRED, THE CONTRACTOR SHALL COORDINATE WITH THE ENGINEER TO
MODIFY THE DESIGN.
6.CONTRACTOR SHALL CONFIRM AND COORDINATE WITH STAMPED
STRUCTURAL DRAWINGS FOR ELEVATIONS AND GRADE CONDITIONS ALONG
BUILDING PERIMETER. NOTIFY OWNER, ARCHITECT, AND ENGINEER(S) OF ANY
DISCREPANCIES PRIOR TO MOBILIZATION.
7.A FLOODPLAIN USE PERMIT SHALL BE REQUIRED FOR EACH SITE
CONSTRUCTION ELEMENT IN THE FLOODPLAIN, INCLUDING BUILDING. THE
FLOODPLAIN USE PERMIT FOR THE BUILDING WILL BE APPROVED AT THE TIME
OF BUILDING PERMIT APPLICATION.
8.SEE THE FLOODPLAIN EXHIBIT (SHEET ####) FOR ADDITIONAL INFORMATION
REGARDING WORK WITHIN THE FLOODPLAIN AND FLOODWAY.
5.NO CONSTRUCTION OR DEVELOPMENT ACTIVITIES SHALL OCCUR WITHIN 450
FEET OF ANY ACTIVE RED-TAILED HAWK NEST SITES DURING THE PERIOD
FROM FEBRUARY 15 THROUGH JULY 15.
NOTES:
2.0%
(47.45
)
EXISTING SPOT ELEVATION
PROPOSED STORM
PROPOSED VERTICAL CURB AND GUTTER
PROPOSED SWALE
CITY OF FORT COLLINS
100-YR FLOODPLAIN
CITY OF FORT COLLINS
100-YR FLOODWAY
1.THE NATURAL HABITAT BUFFER ZONES ARE INTENDED TO BE MAINTAINED IN A
NATIVE LANDSCAPE. PLEASE SEE SECTION 3.4.1 OF THE LAND USE CODE FOR
ALLOWABLE USES WITHIN THE NATURAL HABITAT BUFFER ZONES.
NATURAL HABITAT BUFFER ZONES
KEYMAP
CALL UTILITY NOTIFICATION CENTER OF
COLORADO
Know what's below.
before you dig.Call
R
NORTH
( IN FEET )
0
1 INCH = 30 FEET
30 30 60 90
G2G1
G3
MATCH LINE - SEE SHEET HC1MATCH LINE - SEE SHEET HC3
G2 GRADING PLAN22
E
E
EGXSSXXXX20" W 20" W 20" W 20" W 20" W 20" W 20" W 20" W 20" W 20" W 20" W 20" W 20" W 20" W 20" W 20" W 20" W 20" W
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G G G G G G G G G G G G G G G G G G G G G G G
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DAVID & GRETCHEN OSBORN
1760 W. LAPORTE AVE, LLC
WILLIAM S. ECKERT
DAVID & GRETCHEN OSBORN
GABRIEL
PROPERTIES, LLC
DAVID & GRETCHEN OSBORN
LOT 1
LOT 2
LOT 6
LOT 7 46.6845.43
45.88
45.6745.4645.88
46.71
4
6
.
4
0
46.88
46.7447.1947.2948.10
48.2647.8747.4548.8146.30
2.9%50.49PROPOSED CONCRETE
BOX CULVERT
SEE SHEET ST4 FOR
DETAILED GRADING48.0148.102.0%2.0%TIE TO EXISTING
DITCH CROSSING
1.2%
1.2%
1.1%
1.2
%
47.95 47.1447.85
48.6749.8449.53
1
.
5%2.1%
SheetSALUD FAMILY HEALTH CENTERDRAWING FILENAME: P:\1067-001\Dwg\Grad\1067-001_GRAD.dwg LAYOUT NAME: G3 DATE: Apr 07, 2021 - 9:36am CAD OPERATOR: masonLIST OF XREFS: [1067-001_xFLD] [1067-001_xGRAD_OVERLOT] [1067-001_xPUTIL] [1067-001_xSITE] [1067-001_xTOPO] [1067-001_xEXST] [NES-xborder] [1067-001_GRAD-LEG] [1067-001_KEYMAP] [1067-001_C3D_Proposed]These drawings areinstruments of serviceprovided by NorthernEngineering Services, Inc.and are not to be used forany type of constructionunless signed and sealed bya Professional Engineer inthe employ of NorthernEngineering Services, Inc.NOT FOR CONSTRUCTIONREVIEW SETENGINEERNGIEHTRONRN04/07/2021301 North Howes Street, Suite 100Fort Collins, Colorado 80521www.northernengineering.comPhone: 970.221.4158of 45
LEGEND:
PROPOSED CONTOUR
EXISTING CONTOUR
PROPERTY BOUNDARY
PROPOSED SPOT ELEVATION 33.43
PROPOSED SLOPES
1.THE SIZE, TYPE AND LOCATION OF ALL KNOWN UNDERGROUND UTILITIES ARE
APPROXIMATE WHEN SHOWN ON THESE DRAWINGS. IT SHALL BE THE
RESPONSIBILITY OF THE CONTRACTOR TO VERIFY THE EXISTENCE OF ALL
UNDERGROUND UTILITIES IN THE AREA OF THE WORK. BEFORE COMMENCING
NEW CONSTRUCTION, THE CONTRACTOR SHALL BE RESPONSIBLE FOR
LOCATING ALL UNDERGROUND UTILITIES AND SHALL BE RESPONSIBLE FOR
FOR ALL UNKNOWN UNDERGROUND UTILITIES.
2.REFER TO THE PLAT FOR LOT AREAS, TRACT SIZES, EASEMENTS, LOT
DIMENSIONS, UTILITY EASEMENTS, OTHER EASEMENTS, AND OTHER SURVEY
INFORMATION.
3.ALL CURB SPOTS SHOWN ARE FLOWLINE ELEVATIONS. ALL OTHER SPOTS ARE
FINISHED GRADE ELEVATIONS.
4.ALL PROJECT DATA IS ON THE CITY OF FORT COLLINS VERTICAL DATUM
NAVD88. SEE COVER SHEET FOR BENCHMARK REFERENCES.
5.THE CONTRACTOR IS RESPONSIBLE FOR FIELD LOCATING AND VERIFYING
ELEVATIONS OF ALL CURBS AND GUTTERS AT THE POINTS OF CONNECTION
SHOWN ON THE PLANS PRIOR TO INSTALLING ANY OF THE NEW
IMPROVEMENTS. IF A CONFLICT EXISTS AND/OR A DESIGN MODIFICATION IS
REQUIRED, THE CONTRACTOR SHALL COORDINATE WITH THE ENGINEER TO
MODIFY THE DESIGN.
6.CONTRACTOR SHALL CONFIRM AND COORDINATE WITH STAMPED
STRUCTURAL DRAWINGS FOR ELEVATIONS AND GRADE CONDITIONS ALONG
BUILDING PERIMETER. NOTIFY OWNER, ARCHITECT, AND ENGINEER(S) OF ANY
DISCREPANCIES PRIOR TO MOBILIZATION.
7.A FLOODPLAIN USE PERMIT SHALL BE REQUIRED FOR EACH SITE
CONSTRUCTION ELEMENT IN THE FLOODPLAIN, INCLUDING BUILDING. THE
FLOODPLAIN USE PERMIT FOR THE BUILDING WILL BE APPROVED AT THE TIME
OF BUILDING PERMIT APPLICATION.
8.SEE THE FLOODPLAIN EXHIBIT (SHEET ####) FOR ADDITIONAL INFORMATION
REGARDING WORK WITHIN THE FLOODPLAIN AND FLOODWAY.
5.NO CONSTRUCTION OR DEVELOPMENT ACTIVITIES SHALL OCCUR WITHIN 450
FEET OF ANY ACTIVE RED-TAILED HAWK NEST SITES DURING THE PERIOD
FROM FEBRUARY 15 THROUGH JULY 15.
NOTES:
2.0%
(47.45
)
EXISTING SPOT ELEVATION
PROPOSED STORM
PROPOSED VERTICAL CURB AND GUTTER
PROPOSED SWALE
CITY OF FORT COLLINS
100-YR FLOODPLAIN
CITY OF FORT COLLINS
100-YR FLOODWAY
1.THE NATURAL HABITAT BUFFER ZONES ARE INTENDED TO BE MAINTAINED IN A
NATIVE LANDSCAPE. PLEASE SEE SECTION 3.4.1 OF THE LAND USE CODE FOR
ALLOWABLE USES WITHIN THE NATURAL HABITAT BUFFER ZONES.
NATURAL HABITAT BUFFER ZONES
KEYMAP
CALL UTILITY NOTIFICATION CENTER OF
COLORADO
Know what's below.
before you dig.Call
R
NORTH
( IN FEET )
0
1 INCH = 30 FEET
30 30 60 90
G2G1
G3
MATCH LINE - SEE SHEET HC2MATCH LINE - SEE SHEET HC1
G3 GRADING PLAN23