HomeMy WebLinkAboutSPIRIT AT THE RIVER (FORMERLY LINCOLN CORRIDOR HOTEL) - PDP - PDP170026 - SUBMITTAL DOCUMENTS - ROUND 2 - DRAINAGE REPORTZ
O!U
LEGEND
:7
7!!
!111
m0303�
EA>EIAFTqT TARLE SENCHUMM
BASIS OF BEARING
Runoff Chapter 6
Table 6-3. Recommended percentage imperviousness values
Land Use or
Surface Characteristics
Percentage Imperviousness
(%)
Business:
Downtown Areas
95
Suburban Areas
75
Residential:
Single-family
2.5 acres or larger
12
0.75 — 2.5 acres
20
0.25 — 0.75 acres
30
0.25 acres or less
45
Apartments
75
Industrial:
Light areas
80
Heavy areas
90
Parks, cemeteries
10
Playgrounds
25
Schools
55
Railroad yard areas
50
Undeveloped Areas:
Historic flow analysis
2
Greenbelts, agricultural
2
Off -site flow analysis (when land use not
defined
45
Streets:
Paved
100
Gravel(packed)
40
Drive and walks
90
Roofs
90
Lawns, sandy soil
2
Lawns, clayey soil
2
6-8 Urban Drainage and Flood Control District January 2016
Urban Storm Drainage Criteria Manual Volume 1
10.00
9.00
e.00
7.00
N
N
L
c 6.00
Z 5.00
W
H
4.00
J
J
a
i 3.00
2.00
1.00
0.00 "
0.00
RAINFALL INTENSITY -DURATION -FREQUENCY CURVE
10.00 20.00 30.00 40.00 50.00
STORM DURATION (minutes)
-2-Year Storm - - - 10-Year Storm-100-Year Storm
Figure RA-16 City of Fort Collins Rainfall Intensity -Duration -Frequency Curves
60.00
FCMaps
i
Names
Names
Po».1
e :.l
+. rinv
:w
es
Lufm rd
Legend
FEMA Floodplain
■ FEtM I4glr Rick-flooNaay
FEWHORsk 100Ybr
FEMA Moderate Risk-100I500 Y-
FEMA Map Panet
City FloDdplains
. Cdylseh Risk-FWo W
CM kkgh Risk -100 Year
City Moderate Risk -100 Year
[j City Limits
1. 111 •�h 'fill
1:3,430 e Notes
572.0 0 286.00 572.0 Feet
This map is a user generated static output from the CM of Fort Collins FCMaps
WGS 1984 Web MercaturY
_Aumba Sphere Internet mapping sae and is for reference only. Data layers that appear on this
_ P map may or may not be slowness, wnent, or otherels , reliable.
City of Fort Collins- CIS
\MfNYTpM1N'F
l ..
J
FIRM
fLOW NVMMtfi RIlFY1P
I III.I�Y.11Y1
_.amp
Custom Soil Resource Report
United States Department of Agriculture, Natural Resources Conservation Service.
National soil survey handbook, title 430-VI. http://www.nres.usda.gov/wps/portal/
nres/detail/soils/scientists/?cid=nres 142p2_054242
United States Department of Agriculture, Natural Resources Conservation Service.
2006. Land resource regions and major land resource areas of the United States,
the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook
296. http://www.nres.usda.gov/wps/portal/nres/detail/national/soils/?
cid=n resl 42p2_053624
United States Department of Agriculture, Soil Conservation Service. 1961. Land
capability classification. U.S. Department of Agriculture Handbook 210. http://
www.nrcs.usda.gov/lnternet/FSE—DOCUMENTS/nrcsl42p2_052290.pdf
24
References
American Association of State Highway and Transportation Officials (AASHTO).
2004. Standard specifications for transportation materials and methods of sampling
and testing. 24th edition.
American Society for Testing and Materials (ASTM). 2005. Standard classification of
soils for engineering purposes. ASTM Standard D2487-00.
Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of
wetlands and deep -water habitats of the United States. U.S. Fish and Wildlife
Service FWS/OBS-79/31.
Federal Register. July 13, 1994. Changes in hydric soils of the United States.
Federal Register. September 18, 2002. Hydric soils of the United States.
Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, 2006. Field indicators of hydric
soils in the United States.
National Research Council. 1995. Wetlands: Characteristics and boundaries.
Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service.
U.S. Department of Agriculture Handbook 18. http://www.nres.usda.gov/wps/portal/
n res/detai I/nati ona I/soi Is/?cid= n res 142 p2_054262
Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for
making and interpreting soil surveys. 2nd edition. Natural Resources Conservation
Service, U.S. Department of Agriculture Handbook 436. http://
www. nres. usda. gov/wps/portal/nres/detail/national/soils/?cid=nresl42p2_053577
Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of
Agriculture, Natural Resources Conservation Service. http://
www.nres. usda.gov/wps/portal/nres/detail/national/soils/?cid=nresl42p2_053580
Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and
Delaware Department of Natural Resources and Environmental Control, Wetlands
Section.
United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of
Engineers wetlands delineation manual. Waterways Experiment Station Technical
Report Y-87-1.
United States Department of Agriculture, Natural Resources Conservation Service.
National forestry manual. http://www.nres.usda.gov/wps/portal/nres/detail/soils/
home/? cid = n res 142 p2_053374
United States Department of Agriculture, Natural Resources Conservation Service.
National range and pasture handbook, http://www.nres.usda.gov/wps/portal/nres/
detail/national/landuse/ra ngepasture/?cid=stet prdb 1043084
23
Custom Soil Resource Report
Table —Wind Erodibility Group (Wind Erodibility Group)
Wlnd Erodibility Group— Summary by Map Unit — Larimer County Area, Colorado (COS")
Map unit symbol Map unit name Rating Acres In AOI Percent of AOI
64 Loveland clay loam, 0 to 6 4.4 97.1 %
1 percent slopes I
105 Table Mountain loam, 0 5 0.1 2.9%
to 1 percent slopes
Totals for Area of Interest 4.5 100.0%
Rating Options —Wind Erodibility Group (Wind Erodibility Group)
Aggregation Method: Dominant Condition
Component Percent Cutoff. None Specified
Tie -break Rule: Lower
22
MAPLEGEND
Area of Interest (AOII
Area of Interest(A01)
Soils
Soil Rating Polygons
1
Q 2
0 3
0 4
Q 4L
O 5
Q 6
T
e
Not also or not avaAable
Sol Rating Lines
..N t
ti 2
�.i 3
e-♦ 4
e i 4L
5
N 6
N 7
as A 8
.. Not rated or not available
Soil Rating Points
Custom Soil Resource Report
m
1
®
2
0
3
13
4
0
41.
0
5
0
6
T
�
e
13
Not rated or not available
Water Features
Streams and Canals
Transportation
iyy
Rails
N
Interests Highways
.....
US Roules
Major Roads
Local Roads
Background
.
Aerial Photography
21
MAP INFORMATION
The soil surveys that compose your AOI were mapped at
1:24,000.
Warning: Soil Map may not be valid at this scale.
Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of loll
line placement. The maps do not show the small areas of
contrasting soils that could have been shown at a more detailed
scale.
Please rely on the bar Scale on each reap sheet for map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL.
Coordinate System. Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic, projection, should be used If more
accurate calculations of distance or area are required.
This product is generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Sull Survey Area: Latimer County Area, Colorado
Survey Area Data: Version 11, Sep 23, 2016
Soil map units are labeled (as space allows) for map scales
1.50,000 or larger.
Dale(s) aerial images were photographed: Apr 22, 2011—Apr
28.2011
The orthophoto or other base map on which the soil Imes were
compiled and digitized probably differs from the background
Imagery displayed on these maps. As a result, some minor
e1Allnn ni rnnn •na MnnNnnne rnnu Ho niAanl
4 3520-N
40° 35 10" N
Custom Soil Resource Report
3 Map —Wind Erodibility Group (Wind Erodibility Group) 3
Map Scale: 1:1,470 E pnn ed w A podrat (8.5' x 11") Heel.
McWs N
0 20 40 00 12D
Fed
0 50 100 200 300
Map pmjemon: Web Me V" corner a 6laWs: W(S84 Edge Oa: U1M 7bne 13N W(S84
20
,,, `J0 II
0
40^ 351PN
481510 4BWk0 494M
y3
R
Custom Soil Resource Report
Table—K Factor, Whole Soil (K Factor)
K Factor, Whole Soll— Summary by Map Unit— Larimer County Area, Colorado (COS")
Map unit symbol Map unit name Rating Acres in AOI Percent of AOI
64 Loveland clay loam, 0 to .20 4.4 97.1 %
1 percent slopes
105 Table Mountain loam, 0 .37 0.1 2.9%
to 1 percent slopes
Totals for Area of Interest 4.5 100.0%
Rating Options—K Factor, Whole Soil (K Factor)
Aggregation Method: Dominant Condition
Component Percent Cutoff: None Specified
Tie -break Rule: Higher
Layer Options (Horizon Aggregation Method): Surface Layer (Not applicable)
Wind Erodibility Group (Wind Erodibility Group)
A wind erodibility group (WEG) consists of soils that have similar properties
affecting their susceptibility to wind erosion in cultivated areas. The soils assigned
to group 1 are the most susceptible to wind erosion, and those assigned to group S
are the least susceptible.
19
Custom Soil Resource Report
MAP LEGEND
MAP INFORMATION
Area of Imerast (A01)
..
.24
Streams and Canals
The soil surveys that comprise your AOI were mapped at
Area of Interest (AOp
. �
:28
Transportation
1.24,000,
Solla
a.n
32
1-r-1 Rails
Warning: Soil Map may not be valid at this scale.
Soil Rating Polygons
37
r./ Interstate Highways
-
02r,r
US Routes
Enlargement of maps beyond the scale of mapping can cause
0
.06
43
misunderstanding of the detail of mapping and accuracy of soll
49
Major Roads
line placement. The maps do not show Me small areas of
t0
r
Local Roads
contrasting soils that could have been shown at a more detailed
0
15
.Y
.55
scale.
Q
17
y
.64
Background
•
ratetl or not available
Not rated
Photography
■
Please rely on the bat scale on each map sheet for map
20
.
measurements.
0
24
Soil Rating
Points
■
02
Source of Map: Natural Resources Conservation Service
2a
Web Soil Survey URL:
32
■
.05
Coordinate System: Web Mercator (EPSG:3857)
■
.10
.37
15
Maps from the Web Soil Survey are based on the Web Mercator
0
43
C
projection, which preserves direction and shape but distorts
0
.17
distance and area. A projection that preserves area, such as the
(]
.49
Albers equal-area conic projection, should be used if more
®
.55
13
20
accurate calculations of distance or area are required.
p
24
bb
This product is generated from the USDA-NRCS certified data
Q
Not rated or not available
13
28
as of the version date(s) listed below.
13
.32
Boll Rating Linea
Soil Survey Area: Latimer County Area, Colorado
,y
.02
■
.37
Survey Area Data: Version 11, Sep 23, 2016
^w
.05
■
.43
Soil map units are labeled (as space allows) for map scales
.,�
.10
■
4B
1:50,000 or larger
.15
■
55
Date(s) aerial images were photographed: Apr 22,.2011—Apr
. r
.77
■
64
28,2011
..
.20
O
Not rated or not available
The orthophole or other base map on which the soil lines were
Watar Features
compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor
shifting of map unit boundaries may be evident.
18
40° 35 2 N
4 3510'N
Custom Soil Resource Report
3 Map—K Factor, Whole Soil (K Factor)
O
4943D 49M 49442D 4WA50 49M 494510 4960 494M
3 ;
6
o- Map Stale: 1:1,470 N printed on A portrak (8.5" x 11") sheet
n
N 0 3) 40 80haet
i5
A0 50 100 100 3
MaP Projedm: Web Mffum r Corner mordtrdats: WGSS'84 Edge tics: UiM Zone 13N WGS84
17
5
4 35'ITN
Soil Information for All Uses
Soil Properties and Qualities
The Soil Properties and Qualities section includes various soil properties and
qualities displayed as thematic maps with a summary table for the soil map units in
the selected area of interest. A single value or rating for each map unit is generated
by aggregating the interpretive ratings of individual map unit components. This
aggregation process is defined for each property or quality.
Soil Erosion Factors
Soil Erosion Factors are soil properties and interpretations used in evaluating the
soil for potential erosion. Example soil erosion factors can include K factor for the
whole soil or on a rock free basis, T factor, wind erodibility group and wind erodibility
index.
K Factor, Whole Soil (K Factor)
Erosion factor K indicates the susceptibility of a soil to sheet and rill erosion by
water. Factor K is one of six factors used in the Universal Soil Loss Equation
(USLE) and the Revised Universal Soil Loss Equation (RUSLE) to predict the
average annual rate of soil loss by sheet and rill erosion in tons per acre per year.
The estimates are based primarily on percentage of silt, sand, and organic matter
and on soil structure and saturated hydraulic conductivity (Ksat). Values of K range
from 0.02 to 0,69. Other factors being equal, the higher the value, the more
susceptible the soil is to sheet and rill erosion by water.
"Erosion factor Kw (whole soil)" indicates the erodibility of the whole soil. The
estimates are modified by the presence of rock fragments.
16
Custom Soil Resource Report
Frequency of ponding: None
Calcium carbonate, maximum in profile: 15 percent
Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 2.0
mmhos/cm)
Sodium adsorption ratio, maximum in profile: 5.0
Available waterstorage in profile: Very high (about 18.0 inches)
Interpretive groups
Land capability classification (irrigated): 1
Land capability classification (nonirrigated): 3c
Hydrologic Soil Group: B
Ecological site: Overflow (R049XY036CO)
Hydric soil rating: No
Minor Components
Caruso
Percent of map unit: 7 percent
Hydric soil rating: No
Paoli
Percent of map unit: 4 percent
Hydric soil rating: No
Fluvaquentic haplustolls
Percent of map unit: 4 percent
Landform: Terraces
Hydric soil rating: Yes
15
Custom Soil Resource Report
Minor Components
Aquolls
Percent of map unit: 5 percent
Landform: Swales
Hydric soil rating: Yes
Poudre
Percent of map unit: 5 percent
Hydric soil rating: No
105—Table Mountain loam, 0 to 1 percent slopes
Map Unit Setting
National map unit symbol: jpty
Elevation: 4,800 to 5,600 feet
Mean annual precipitation: 13 to 15 inches
Mean annual air temperature: 48 to 50 degrees F
Frost -free period: 135 to 150 days
Farmland classification: Prime farmland if irrigated
Map Unit Composition
Table mountain and similar soils: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Table Mountain
Setting
Landform: Flood plains, stream terraces
Landform position (three-dimensional): Tread
Down -slope shape: Linear
Across -slope shape: Linear
Parent material: Alluvium
Typical profile
H1 - 0 to 36 inches: loam
H2 - 36 to 60 inches: loam, clay loam, silt loam
H2 - 36 to 60 inches:
H2 - 36 to 60 inches:
Properties and qualities
Slope: 0 to 1 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Well drained
Runoff class: Low
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to
high (0.60 to 2.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
14
Custom Soil Resource Report
Larimer County Area, Colorado
64—Loveland clay loam, 0 to 1 percent slopes
Map Unit Setting
National map unit symbol: jpx9
Elevation: 4,800 to 5,500 feet
Mean annual precipitation: 13 to 15 inches
Mean annual air temperature: 48 to 50 degrees F
Frost -free period., 135 to 150 days
Farmland classification: Prime farmland if irrigated
Map Unit Composition
Loveland and similar soils: 90 percent
Minor components: 10 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Loveland
Setting
Landform: Flood plains, stream terraces
Landform position (three-dimensional): Tread
Down -slope shape: Linear
Across -slope shape: Linear
Parent material: Alluvium
Typical profile
H1 - 0 to 15 inches: clay loam
H2 - 15 to 32 inches: clay loam, silty clay loam, loam
H2 - 15 to 32 inches: very gravelly sand, gravelly sand, gravelly coarse sand
H2 - 15 to 32 inches:
H3 - 32 to 60 inches:
H3 - 32 to 60 inches:
H3 - 32 to 60 inches:
Properties and qualities
Slope: 0 to 1 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Poorly drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20
to 0.60 in/hr)
Depth to water table: About 18 to 36 inches
Frequency of flooding: Occasional
Frequency of ponding: None
Calcium carbonate, maximum in profile: 15 percent
Salinity, maximum in profile: Very slightly saline to slightly saline (2.0 to 4.0
mmhos/cm)
Available water storage in profile: Very high (about 16.7 inches)
Interpretive groups
Land capability classification (irrigated): 3w
Land capability classification (nonirrigated): 3w
Hydrologic Soil Group: C
Hydric soil rating: No
13
Custom Soil Resource Report
development of resource plans. If intensive use of small areas is planned, however,
onsite investigation is needed to define and locate the soils and miscellaneous
areas.
An identifying symbol precedes the map unit name in the map unit descriptions.
Each description includes general facts about the unit and gives important soil
properties and qualities.
Soils that have profiles that are almost alike make up a soil series. Except for
differences in texture of the surface layer, all the soils of a series have major
horizons that are similar in composition, thickness, and arrangement.
Soils of one series can differ in texture of the surface layer, slope, stoniness,
salinity, degree of erosion, and other characteristics that affect their use. On the
basis of such differences, a soil series is divided into soil phases. Most of the areas
shown on the detailed soil maps are phases of soil series. The name of a soil phase
commonly indicates a feature that affects use or management. For example, Alpha
silt loam, 0 to 2 percent slopes, is a phase of the Alpha series.
Some map units are made up of two or more major soils or miscellaneous areas.
These map units are complexes, associations, or undifferentiated groups.
A complex consists of two or more soils or miscellaneous areas in such an intricate
pattern or in such small areas that they cannot be shown separately on the maps.
The pattern and proportion of the soils or miscellaneous areas are somewhat similar
in all areas. Alpha -Beta complex, 0 to 6 percent slopes, is an example.
An association is made up of two or more geographically associated soils or
miscellaneous areas that are shown as one unit on the maps. Because of present
or anticipated uses of the map units in the survey area, it was not considered
practical or necessary to map the soils or miscellaneous areas separately. The
pattern and relative proportion of the soils or miscellaneous areas are somewhat
similar. Alpha -Beta association, 0 to 2 percent slopes, is an example.
An undifferentiated group is made up of two or more soils or miscellaneous areas
that could be mapped individually but are mapped as one unit because similar
interpretations can be made for use and management. The pattern and proportion
of the soils or miscellaneous areas in a mapped area are not uniform. An area can
be made up of only one of the major soils or miscellaneous areas, or it can be made
up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example.
Some surveys include miscellaneous areas. Such areas have little or no soil
material and support little or no vegetation. Rock outcrop is an example.
12
Custom Soil Resource Report
Map Unit Legend
Larlmer County Area, Colorado (CO644)
Map Unit Symbol Map Unit Name Acres In AOI Percent of AOI
Ra I nualanri elms Innm n in 1 d d I Q7 1 a/
percent slopes
105 Table Mountain loam, 0 to 1 0.1 2.9%
percent slopes
Totals for Area of Interest 4.5 100.0%
Map Unit Descriptions
The map units delineated on the detailed soil maps in a soil survey represent the
soils or miscellaneous areas in the survey area. The map unit descriptions, along
with the maps, can be used to determine the composition and properties of a unit.
A map unit delineation on a soil map represents an area dominated by one or more
major kinds of soil or miscellaneous areas. A map unit is identified and named
according to the taxonomic classification of the dominant soils. Within a taxonomic
class there are precisely defined limits for the properties of the soils. On the
landscape, however, the soils are natural phenomena, and they have the
characteristic variability of all natural phenomena. Thus, the range of some
observed properties may extend beyond the limits defined for a taxonomic class.
Areas of soils of a single taxonomic class rarely, if ever, can be mapped without
including areas of other taxonomic classes. Consequently, every map unit is made
up of the soils or miscellaneous areas for which it is named and some minor
components that belong to taxonomic classes other than those of the major soils.
Most minor soils have properties similar to those of the dominant soil or soils in the
map unit, and thus they do not affect use and management. These are called
noncontrasting, or similar, components. They may or may not be mentioned in a
particular map unit description. Other minor components, however, have properties
and behavioral characteristics divergent enough to affect use or to require different
management. These are called contrasting, or dissimilar, components. They
generally are in small areas and could not be mapped separately because of the
scale used. Some small areas of strongly contrasting soils or miscellaneous areas
are identified by a special symbol on the maps. If included in the database for a
given area, the contrasting minor components are identified in the map unit
descriptions along with some characteristics of each. A few areas of minor
components may not have been observed, and consequently they are not
mentioned in the descriptions, especially where the pattern was so complex that it
was impractical to make enough observations to identify all the soils and
miscellaneous areas on the landscape.
The presence of minor components in a map unit in no way diminishes the
usefulness or accuracy of the data. The objective of mapping is not to delineate
pure taxonomic classes but rather to separate the landscape into landforms or
landform segments that have similar use and management requirements. The
delineation of such segments on the map provides sufficient information for the
11
MAP LEGEND
Area of Interest (AOI)
Area of Interest (AOQ
Soils
Soil Map Una Polygons
Soil Map Una Lines
Soil Map Unit Points
Special
Point Features
V
Blowout
®
Be. Pit
X
Clay Spot
(�
Closed Depression
Gravel Pit
Gravelly Spot
O
Landfill
Lava Flow
Marsh or swamp
Mine or Ouany
o
Miscellaneous Water
O
Perennial Water
V
Rock Wade
.+-
Saline Spot
Santry Spot
Severely Emitted Spot
O
Sinkhole
Slide or Slip
Sodic Spot
Custom Soil Resource Report
®
Spoil Area
Q
Stony Spat
Very Stony Spot
Wet Spot
Other
Special Line Features
Water Features
Streams and Canals
Transportation
1 H
Reds
sly
Interstate Hlphways
US Routes
Major Roads
Local Roads
Background
.
Aerial Photography
10
MAP INFORMATION
The soil surveys that comprise your ACI were mapped at
1:24,000,
Warning_ Soil Map may not be valid at this scale.
Enlargement of maps beyond the scale of mapping win cause
misunderstanding of the detail of mapping and accuracy of soil
line placement. The maps do not show the small areas of
contrasting soils that Could have been shown at a more detailed
scale.
Please rely on the bar scale on each map sheet for map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more
accurate calculations of distance or area are required
This product is generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Soil Survey Area: Latimer County Area, Colorado
Survey Area Data: Version 11, Sep 23, 2015
Soil map units are labeled (as space allows) for map scales
150,000 or larger.
Dale(s) aerial images were photographed: Apr 22, 2011—Apr
20,2011
The onhophoto or other base map on which the soil lines were
Compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor
shiftino of map unit boundaries may be evident.
35 20 N
4 35 IWN
PA
r , q
�P"ftq
"IT
ru
T
r
3:
Custom Soil Resource Report
Soil Map
Map Scale: 1: 1,470 if prWited an A porball: (8.5" x 11") Ileet
mebam
N 0 23 40 80
0 50 100 200
Map pm)ecbon: Web Mercator Ca coN*kfjes:WGS84 Edgebcs:UTMZane 13NVVGS84
9
4W10 494W
4945M
now 3S 21, 1
R
494570
gf
• � ` ��_ w • K..,-�. it �� � �3 �, f
1 t
- C
�3r �Iy A � •T,..
in
ONO
O'�OLSSON ,. 5395M MCO80530We xE
285180
L..a.,e, co eos3e
A 550Ci ATES TEL 970431 7733
APPENDIX C
REFERENCED INFORMATION
8 1 P a g e
OLSSON..
ASS 0C I AT LS
Project: Spirit at the River
Basin ID:
Ds Sae Sbp2
s;
v
Sib n, E
L
STAGE -STORAGE SONG FOR DETENTION BASINS
9W 91ge E
ram' F-ie.
V!w I
L.._. _I Ss Sgez
sae sye.
Du P1Dr
w�
Deslan Infortnatlon Ilnputl: Check Basin Shape
Width of Basin Bottom, W Right Triangle OR...
Length of Basin Bottom, L = ft Isosceles Triangle OR...
Dam Side -slope (H:V), Zd ft = f tft Rectangle OR...
Circle f Ellipse OR...
Irregular X (Use Oeeride values in cells G32:G52)
MINOR MAJOR
Storage Requirement from Sheet'Modified FAA': 0.09 0.38 �:cre_
ft.
Stage -Stomas Relationship: Storage Requirement from Sheet'Hydrograph': cre-ft.
Storage Requirement from Sheet'Full-Spectrum': I acre-ft.
Labels
for WQCV, Minor,
8 Major Storage
Stages
(input)
Water
Surface
Elevation
ft
(input)
Side
Slope
(H:V)
fttt
Below El.
(input)
Ba
Width sin at
Stage
ft
out ut
Basin
Length at
Stage
ft
(output)
Surface
Area at
Stage
fe
(output)
Surface
Area at
Stage
fe user
Overide
Volume
Below
Stage
ft3
(output)
Surface
Area at
Stage
acres
(output)
Volume
Below
Stage
acre-ft
(output)
Target Volumes
for WQCV. Minor,
8 Major Storage
Volumes
for qoal seek
4941.00
0
0.000
0.000
4941.50
1 0.00
0.00
2,489
622
0.057
0.014
4942.00
0.00
0.00
3206
2,046
0,074
0.047
4942.60
0.00
0.00
3,999
3,847
0,092
0.088
WQCV8.2YR
4943.00
0.00
0.00
5112
6, 125 0.117
9,024 _ 0.149
12,561 0.176
16,722 0206
21,591 0.241
27,265 0.280
0.141
0.104
4943.50
0.00
0.00
6,483
0.207
4944.00
0.00
0.00
_
7,665
0.288
100 YR
4944.50
0.00
0.00
8,981
0.384
0.380
4945.00
0.00
0.00
10496
0.496
4945.50
0.00
0.00
1
0:626
UD•Daterltion v2.34.)ds, Basin 9/1212017, 5:10 PM
DETENTION VOLUME BY THE MODIFIED FAA METHOD
Project: Spirit at the River
Basin ID:
(For catchlrenls less than 160 acres only. For larger catchments, use hydrograph routing method)
(NOTE: for catch bents to rger than 90 acres, CUHP hydrogen ph and routing are recomnanded)
Detemenation of MINOR Detention Volu= Using Modified FAA Method
Determination of MAJOR Detention Voluma Using Modred FAA Method
Design alforllMdon
fallout):
Design 6lfornal
INouth
C.h-.Ora,r,r, emdusmzs
la=
4100
Ipement
racnmem Danny. l a,em ,gar
1..
410e
percent
4370
cachmeM0rana9e Area A=
Isar.
racnmem pm,ye Mae
A•
4.9)0
eras
PrederelopmeM
NRCS Soil Grow
Type
C
6, C,.0
P,ede lopmer4
NRCS Sal GmW
Type =
C
A,B,C..D
2
Regan a...d for Deis.,, C.m.' T=
yeam(2,5, 10. H. 5M or I DO)
Relrn Pemd
icr DeMMlpn Cwmol
T= 100
pan(2.5,10, 25, 50, Or 1001
Time of C mee,mm.n of Waewhed
Tc=
13
m.aes
T,me of C..M.On of Welersfwd
To
13
insists
ON
Araw&W Una Release Rae a=
ds/cn
Al.w""
Reams Rafe
9=
1m
drearierOne
our Precipaaon
P,=
082
ncMe
OneR .Premaueon
P,•
265
Yrare
2850
Deslgn RelnM11
CoeffclW D,w
IDF Formula
I•c" PVIcreTd•0.
0,=
De.en RMnMalOFFarMuls
Cosffw,a0n.
I•C,- P,)(CeTJ-Cs
C,=
28.5O__
10
C..ff.entTsa Ca=
Co<18uaM Two
Ca•
10
Coefficient TMee
Ca=
O]B9
CoefscleMTMee
Ca•
0789
Dertarrrinatiorn of A
u ti.. from the Basin (Citiculditta
Deftaidnation
of Avers per
Outgo. from the Basin lCalculabeft
R.11 Cpeffe,ent
C=
025
Rumff CoeffKwnl
C=
058
IMIow Peak Ramff
Open=
2.41
cis
IMlpw Pam Ruwff
Opw,=
1741 _ _pe
AaoeaOMPaneW RSM
OpaM=
MIT
ant
"..W. Pent OWew Rae
DPo,s=
4.37 _
ch,
Mod. FM Minor Slonste Volume•
3.954
wMc Mt
Moe. FM Major Storage Volume•
16.490
calk Ml
MW.Fmmmw Seryevoeme•
Deal
.4
Mod. FM Major SMrage voarme•
0.379
aprM
5
s. Ewer ReNM Watenlnreme,d
hued.. vane Nere I. 5to,S
NwMb
Randal
Rental
Irmo,,
sa
"'rait
Army.
ONeow
SMraea
Ra,faa
Ranfad
Irllaw
Adyso,ent
Avenge
outer
series
Damian
r,Mb
V9Mme
Factor, r
Oanow
vow
vo3Damon,enDamon,
94ena[y
VOYme
factor
Greta.
Vdume
lum
Voe
miles
eafte/M
acre-feet
'm
cM
re -feet
.4em
aerates
nobselM
.4..
'm
cis
.4..t
C.4.0
rewire)0
o N
M
N
o u
0
0.00
DOW
Dan _
_ 000
0000
Dow
0
0.00_ _
-
oONO
ON
coo 0000
0No
5
27B
aOn
t.00
017
D001
00i2
5
sea
Died
IDo
4.37
oDOo
Due
10
220
0037
1.an
0.17
0002
0035
10
767
D20d
100
431
ONO
0206
15 _
184
OUT
D93
016
0003
0 U3
15
643
0.337
093
4.01
0.0"
0252
20
1.so
a
0.a3
014
0004
0051],
20
557
0.389
0.83
351
0.Ose
0200
25
141
Dan
076
0is
0005
0055
25
493
0430
0.76
3_3:
0.114
0318
30
127
0.684
0.)7
013
0.0p5
Dan
30
444
Oa65
072
3.13
O.t29
0335
35
1.18
0086
_
089
012
OOOB
0063
M
401
0494
089
9.00
0.114
0350
40
107
01172
_ _am
012
am_
am_
40_
372
05"
0_B8
2.90
Dim
am
45
on
0015
0.84
oil
0001
0.086
45
345
0542
a"
292
_ _
Otte
am
50
55
Dal
Oe]_
0.52
0078
am
0.093
063
_062
081
all
_ _Oil
oil
DODO
Deep _
am
0070
Dan
0.074
50
55_
80
322
303
2a5
0583
0.581
-0 Sao
063
002
Oat
2.75
270
200
Dim
0.205
D220
0373
0370
0378
60
85
OA
0085
O80
010
0009
0075
83
270
0813
080
282
0235
0])9
70
0.74
0ID57
059
0.10
0010
Oon
70
257
0628
058
2.59
0.250
0378
75
070
0089
059
010
0.011
0078
73
215
0641
059
2.%
0 285
OPB
80
067
01
0.10
0.011
0079
Bo
234
0654
as$
254
0.280
0374
85
0.54
0092
050
a.10
0.012
0030
BS
224
ONO
ass
252
0295
0.371
90
062
0094
057
010
0.012
0081
BO
215
0677
057
2.50
0.310
0.387
95
0.59
Ones
057
DID
0013
0082
95
207
0687
057
246
0.325
0.392
too
057
0.07
0.59
0.10
0014
0083
IN
200
0697
D57
247
0340
0357
105
055
0 an
0%
0.10
0014
0 a"
as
193
0.707
0 %
246
0.355
0.352
110
053
0095)
0%
010
0015
0.084
110
187
0716
0% _
244
0370
0349
115
052
Died
0% _
DID
0015
0085
Its
let _
0725
am
243
0.385
ONO
In _
_ _ 050
_ 01_0}
055_
010 _
0010 _
am
in
175
0734
053
242_
04M
0333
125
1T0
125
049 0.103 055 010 0017 Dan
0)42
055
241
0415
03M
130
047
DIN
055
0to
0017
0087
in
105
0750
0.55
240
04M
0319
135
048
0. 05
055
010
Dole
0007
141
0757
240
0445
0312
140
_
a45
01ae
0.55
a10
aoie
0aei
_135
140
1.55
0.764
_ass
ass
239
_
0460
0304
145
044
0107
0.54
010
00"
00ee
145
152
0772
0.of
23e
0476
02"
IN
043
010a
0.54 _
0.19 _
D.OXI
OOea_
In
142
0775
_ 054
237
0401
0288
155
115
155
042 0109 0.54 O.o9 0.020 0000
0785
6.54
237
0508
0279
1W
041
Otto
054
009
_ 0.021
0089_
In
_ 142_ _
0792
0.54
23t1
0521
0271
165
040
0110
051
009
DD21
0099
Ids
130
0798
0.54
230
05M
0262
135
1)0
0.38 0111 O54 009 0022 O.Oa9
170
0.801
054
235
0551
0253
175
D38
0112
054
009
_ 0.123 _
OOe9 _
175 _
_ _ 13_3
0810 _
0.54
235
0.588
02"
IN
037
0113
054
ON
0.023
am
in
ITo
Dole
ON
234
0581
0235
Ids
0%
0114
054
009
0024
0MaD
19S
127
0.921
054
234
05%
0225
IN
D39
0114
053
009
0024
Dan
10
_
OUT
053
233
0811
0216
105
035
0115
053
009
_
0025
am
10
_1.25
122
0.632
053
233
0626
a206
200
ON
Otle
053
009 _
_ 0026
0m
200
120
0937_
053
233 _
0641
a,"
205
DU Ott) 053 009 0026 00"
205
a$is
053
232
D6%
0187
210
033
0117
.53
00:
0021
0ON
_
210 -
_Ila
lie
0me
053
232
OB71
0177
215
0.33
Otte
Q53
009
D02]
0091
215
0053
057
232
08Be
OILS
220
0.32
0119
053
009
_
0028
0091
220
_ _1.14
1.12
_
0957
053
231
O)a, 1
Dim
225
0.31
0119
053
009
0029
0.091
225
1.10
UNIT
ass
231
0715
0140
2"
0.M
0120
0.53
0.09
0029
0091
230
1.05
0587
0.53
231
0731
0135
235
0.30
0111
053
005)
0030
C.OBt
235
LDB
DO)i
013
231
0746
0125
240
030
0.121
0 53
0.09
0.030
0 091
20
103
0 876
0.53
230
0 761
a 114
245
030
0122
_..
0.53
- _.
009
_ 0031
Doi
24S
103
0580
0.53
230
0116
a104
2%
_
1m
2%
029 0112 053 009 003I 0091
0885
0.59
230
0792
0093
255
029
0123
053
009
0032
0091
255
tan
Dow
0.53
2M
0807
0082
no
028
0124
053
aD9
0033
009,
260
098
0893
0.53
229
0622
0071
285
0.20
0124
052
on
0033
0091
2B5
097
0897
052
225)
0837
0me
270
0.27
0125
052
on
DOM
0091
270
01
0901
0.52
229
0852
0049
275
027
0125
052
an
0035
awl
275
094
now
0.52
2a
owl
0On
283
027
0126
005)
0035
_ _0091
_ 093
0909
0.52
2.25)
0852
0027
_290
285
285
028 01To0.09 00% 0080
092
0913
052
228
_
0897
0018
2B0
028
013)009
A-T
0.0%
009a
2B0
091
0817
052
229
0912
0005
295
026
0127 _0.09
003] _
0090
2B5
059
_0920
052
2.28
Lod)
300
025
0.128009
0.038
0090
300
OBB
0.924
052
_
228
_0.921
0913
-0.DIB
,... rM M...... 9e... 1....1- 4M54 Mad. FM M ajar SMnpe Volume(wEIC R)• 18,490
Moe. FM Minor SMr.o. vow. (.,.A)• O.OBOa Mod. FM Major SWO99 Volunm(acMA)• 03706
UDFCD DETENTION BASIN VOLUME ESTIMATING WORKBOOK Version 2. 34, Released Novenel 2013
l9TDetermon_r2 34 ak, Modified FM 911202011. 510 PM
APPENDIX B
HYDRAULIC CALCULATIONS
7 1 P a g e
OAOLSSON
ASSOCIATES
COMPOSITE PERCENT IMPERVIOUSNESS
Basin Name
Basin Description
Paved
Buildinq
Brick Pavers
Landscape
T otal Area
(sf)
Total
Area
ac
Percent
Impervio
usness
90%
90%
22%
2%
sf
sf
sf
sf
Historic
Onsite/Offsite
1
-
-
-
190,173.00
190,173.00
4.37
2%
Developed
1
Building, Parking Lot, Detetnion
45,009.00
34,709,00
101125.00
97,600.00
187.443.00
4.30
41%
2
West Access Drive
1,053.00
-
-
1,053.00
0.02
90%
3
East Access Drive
1,464.00
-
-
384.00
1,848.00
0,04
72%
Overall Onske
1
47,526.00
34,709.00
10,125,00
97,984.00
190,344.00
4.37
41%
TIME OF CONCENTRATION CALCULATIONS
STORM DRAINAGE CALCULATION
BASIN
2- r
100- r
acres
min
inlhr
in/hr
ds
cfs
Historic
Onslts/Offslte
1
4,37
0.15
0,19
11.7
2.10
7.30
1.38
6.02
Develo etl
1
4.30
0.48
0.60
12.4
2.00
7.15
4.18
18.69
2
0.02
0.95
1.19
7.6
2.50
8.75
0.051
0.25
3
1
1 0.04
1 0.78
1 0.98
1 10.3
1 2.25
1 7.75
1 0.07
10.32
c, 1880 Fall River Drive
*.OLSSON o Love°a°°
Lincoln Hotel Hydrologic Calcs R Loveland,200 C080838
A S S O C I A T E$ TEL 970 461 7733
APPENDIX A
HYDROLOGIC CALCULATIONS
6 1 P a g e
O\OLSSON e
ASSOCIATES
teferences
Drainage Criteria Manual, Volumes 1, 2, & 3, Urban Drainage and Flood Control District,
Volumes 1 & 2 — Originally Published September 1969, updated January 2016; Volume 3 —
Originally Published September 1992, updated November 2010
Fort Collins Amendments to the Urban Drainage and Flood Control District Criteria Manual
dated December 2011
5 1 P
OLSSON
ASSOCIATE%
r
WQCV Required Volume
4,530 cubic feet
2 yr Required Volume
3,964 cubic feet
100 yr Required Volume
16,500 cubic feet
Bottom of Pond
4941.00
Provided WQCV
4,530 cubic feet
WQCV WSEL
4952.65
2 yr Provided Volume
3,964 cubic feet
2 yr WSEL
4942.57
100 yr Provided Volume
16,500 cubic feet
100 yr WSEL
4944.50
Outlet Structure Invert
4941.00
100 yr Allowable
Release Rate
1.38 cfs
Spillway Elevation
4944.50
Top of Pond
4945.50
Table 3. Detention Pond Parameters
3, Outlet Structure and Spillway
The Outlet structure was designed to hold back the WQCV for 40 hours and to release the 100
year volume at the site's historic runoff rate of 1.38 cfs.
The bike trail to the south of the ponds will serve as the emergency spillway where excess
volume will overtop the trail and discharge directly into the Cache La Poudre River.
5.0 CONCLUSIONS
5.1 Compliance with Standards
This report has been prepared in accordance with common engineering practices, the criteria
set forth in Colorado Urban Drainage and Flood Control District Manual and the amendments
that pertain to Fort Collins.
5.2 Drainage Concept
Developed runoff generated on the proposed site will be directed to the detention ponds located
in the south portion of the site. The pond is designed to drain the WQCV in 40 hours and
release the 100 year volume at the site's historic runoff rate of 1.38 cfs.
4 1 P a g e
.OLSSON
ASSOCIATES
FIIFF�
of the site. The water will reach the ponds by a combination of sheet flow and gutter flow.
The site is 4.37 acres and contains a proposed parking lot, the proposed building, and some
landscaped areas. Runoff will flow to the south portion of the parking lot where there is no curb,
then proceed to flow south into the proposed detention ponds where the runoff will discharge
into the existing storm manhole then into the Cache La Poudre River.
4.2 Specific Details
1. Low Impact Design
The City of Fort Collins requires Low Impact Design (LID) for new projects. For this project it has
been determined that a combination of brick pavers and a rain garden will be used. The
requirements for the pavers are that 25% of the private drives and parking lots need to be
pavers. At minimum, 50% of the site's impervious area needs to be treated by LID. The rain
garden will outlet into the site's proposed detention pond to the south.
The proposed site will have about 40,000SF of drives and parking lots, 10,125SF of which is
proposed to be brick pavers. The maximum run-on area for brick pavers is 3:1. The area that
will run-on to the brick pavers will be 37,431 (not all are able to reach the max run-on area).
The rain garden will account for the rest of the area that needs to be treated for the 50% of the
site's impervious area. Roof drains will be discharged into the rain garden. The square footage
of the roof is 34,709 SF. Between the area the brick pavers and the roof area collected by roof
drains that will discharge into the rain garden 72,140 SF will be treated by the LID design. The
site's total impervious area is 92,360 SF so we are treating well above the minimum 50%
requirement. See table 2 below for rain garden parameters.
2. Minimum Required Storage Volume
The minimum required storage volume was determined using Colorado Urban Drainage's
detention volume spreadsheet (UD-Detention v2.34) See Appendix B.1. The WQCV for the site
was determined to be 4,657 cubic feet based on the UD-Detention b2.34 spreadsheet.
31Page
CJ `,OLSSON ,,
.SS I C I A 7 C I
Basin 3 is located in the northeast portion of the site and is the location of the east access drive.
This basin also drains north onto Lincoln Avenue before the runoff is collected in an existing
roadside ditch to the east.
3.0 DRAINAGE BASIN CRITERIA
3.1 Development Criteria Reference and Constraints
The design of the proposed drainage system was completed in accordance with the criteria set
forth in Colorado Urban Drainage and Flood Control District Manual and the amendments that
pertain to Fort Collins.
3.2 Hydrological Criteria
Hydrologic calculations have been prepared in accordance with criteria set forth in Colorado
Urban Drainage and Flood Control District Manual and the amendments that pertain to Fort
Collins.
3.3 Hydraulic Criteria
Hydraulic calculations have been prepared in accordance with the criteria set forth in Colorado
Urban Drainage and Flood Control District Manual and the amendments that pertain to Fort
Collins.
The Colorado Urban Drainage Detention sizing spread sheet v2.34 was used to size the
detention pond using the modified FFA method.
3.4 Floodplain Regulations Compliance
The site is currently located within a FEMA and City of Fort Collins regulatory floodplain so the
project will comply with the safety regulations of chapter 10 of the city of Fort Collins municipal
code. The floodplain elevation was determined to be 4956.50, the lowest finished floor elevation
was set a foot above that at 4957.50. The foundation will be set as slab -on -grade.
As stated previously, the floodplain is currently under review to be revised which will shift the
floodplain and the proposed building will no longer be within it. The owner is aware that
proceeding before the new floodplain is approved will be at his or her own risk.
3.5 Modifications of Criteria
There are no modifications to the criteria for this project.
4.0 DRAINAGE FACILITY DESIGN
4.1 General Concept
In the proposed condition, the site will drain to the detention ponds located in the south portion
2 1 P a g e
"SOLSSOW.
A:5 D C I AT r!.
1.0 GENERAL LOCATION AND DESCRIPTION
1.1 Location
The proposed project is located in the southeast quarter of section 12, township 7 north, range
69 west of the 6'" P.M. City of Fort Collins, County of Larimer, State of Colorado. The proposed
site is bordered on the north by Lincoln Avenue and on the south by the Cache La Poudre
River.
1.2 Description of Property
Currently the site consists of an office building, some storage sheds, a workshop, a paved
parking lot, and a gravel storage area to the south. The project will require the demolition of the
existing structures, the paved parking lot and the gravel storage area. The proposed site is 4.37
acres and will consist of the construction of a hotel building, new parking lot, and detention
ponds.
Based on the NRCS soil survey the soil present on the site is classified as hydrologic group C.
The site currently slopes to the south with an average slope of 1 % to the Cache La Poudre
River.
Changes to the site grading are proposed to ensure proper drainage around the proposed
building, and include the construction of connected detention ponds along the south edge of the
property.
1.3 Floodplain
The site, and its proposed features, are currently located within a FEMA and City of Fort Collins
regulatory floodplain. The site is within a FEMA designated flood hazard zone "AE" meaning
that the base flood elevation for the site has been determined to be 4946.50 per FEMA Firm
Map 08069C0979H dated May 2, 2012. However, the FEMA floodplain is currently under review
to revise the boundaries and the proposed building will no longer be within the floodplain. The
owner is aware that proceeding before the new floodplain is approved will be at his or her own
risk.
2.0 DRAINAGE BASIN AND SUB -BASINS
2.1 Major Basin Description
Historically, the site drains to the south into the Cache La Poudre River by overland flow. The
site historically discharges at a rate of 1.38 cfs and 6.02 cfs for the 2-year and 100-year storm
events historically.
The existing drainage patterns for the land surrounding the property will not be impacted and
there will be no drainage routed through our site from the surrounding properties.
2.2 Sub -Basin Description
Historically, the site drains to the south into the Cache La Poudre River by overland flow.
Due to the proposed site grading, the site was divided up into 3 drainage basins.
Basin 1 includes the proposed hotel building, the detention ponds, and the majority of the site.
This basin drains to the detention ponds located in the south portion of the site.
Basin 2 is located in the northwest portion of the site and is the location of the west access
drive. This basin drains north onto Lincoln Avenue before the runoff is collected in an existing
roadside ditch to the east.
List of Appendices
Appendix A Hydrologic Calculations
A.1 Imperviousness, Time of Concentration, Runoff Calculation
Appendix B Hydraulic Calculations
B.1 Detention Volume by the Modified FAA Method
B.2 Pond Stage Storage
Appendix C Referenced Information
C.1 Vicinity Map
C.2 NRCS Web Soil Survey
C.3 FEMA Firm Map
CA Fort Collins Floodplain map
C.5 City of Fort Collins Rainfall Intensity -Duration -Frequency Curves
C.6 Urban Drainage Imperviousness Values
C.7 Drainage Basin Map
C OLSSON (10
ASSOCIATES
opp""Pp"
Table of Contents
1.0
General Location and Description......................................................................................1
1.1 Location...................................................................................................................
1
1.2 Description of Property.............................................................................................
1
1.3 Floodplain.................................................................................................................1
2.0
Drainage Basin and Sub-Basins........................................................................................1
2.1 Major Basin Description............................................................................................
1
2.2 Sub -Basin Description..............................................................................................
1
3.0
Drainage basin criteria.......................................................................................................2
3.1 Development Criteria Reference and Constraints.....................................................
2
3.2 Hydrological Criteria.................................................................................................
2
3.3 Hydraulic Criteria......................................................................................................
2
3.4 Floodplain Regulations Compliance.........................................................................2
3.5 Modifications of Criteria............................................................................................
2
4.0
Drainage Facility Design....................................................................................................2
4.1 General Concept......................................................................................................
2
4.2 Specific Details.........................................................................................................
3
1. Low Impact Design...............................................................................................
3
2. Minimum Required Storage Volume.....................................................................
3
3. Outlet Structure and Spillway................................................................................
4
5.0
Conclusions.......................................................................................................................4
5.1 Compliance with Standards..................................................................................
4
5.2 Drainage Concept.................................................................................................
4
6.0 References...............................................................................................................5
List of Tables
Table1: Proposed Basins...........................................................................................2
Table 2: Rain Garden Parameters.................................................................................3
Table 3: Detention Pond Parmaters...............................................................................4
O\OLSSON (19
ASSOCIATES
SPIRIT AT THE RIVER HOTEL
PRELIMINARY DRAINAGE REPORT
PREPARED FOR
Spirit at the River Hotel
Fort Collins, Colorado
PREPARED BY
Olsson Associates
1880 Fall River Drive, Suite 200
Loveland, CO 80538
970.461.7733
Contact: Mike Maurer, PE
September, 2017
Olsson Project No. 017-0150
0**VOLSSON
ASSOCIATES