HomeMy WebLinkAbout20 - Design Report - Four Points Ph II - Water
WATER MAIN
DESIGN REPORT
FOR:
FOUR POINTS PHASE 2
BOZEMAN, MT
Prepared By:
Madison Engineering
895 Technology Drive, Suite 203
Bozeman, MT 59718
(406) 586-0262
OCTOBER 2020
FOUR POINTS PHASE 2
WATER SYSTEM DESIGN REPORT
A. General Information
This design report will give an overview of the proposed water main extension for the 36.36 acre
development of Four Points Phase 2 (SE ¼, Section 34, Township 01S, Range 05E) located at
the intersection of Cattail St and Davis Ln in Bozeman. The developed area in Phase 2 will be
approximately 13.79 acres, which is zoned for high density residential (R-4) development, and
the remaining 22.57 acres will be dedicated to wetland areas or common open space areas.
The report includes a description of the proposed water system and design parameters. The
proposed improvements are anticipated to be constructed spring of 2021. Once the water mains
are constructed and approved, the mains will become a part of the City of Bozeman system.
The procedures and parameters outlined in the COB Design Standards and Specifications Guide
were used in the design of the water infrastructure for the proposed development. In addition,
the following references were used in the preparation of this report:
a. COB Design Standards and Specifications Policy, 2004. Addendum #7
b. COB Modifications to Montana Public Works Standard Specifications (MPWSS),
Addendum #3.
c. DEQ Circular No. 1
d. City of Bozeman Zoning Map
e. Uniform Plumbing Code
f. City of Bozeman Water Facility Plan Update, July 2017
The developer’s contact information is:
Four Points MT LLC
5 Rimani Dr
Mission Viejo, CA 92692
Water supply and wastewater treatment will be provided by the City of Bozeman. The system
owner’s contact info is:
City of Bozeman Public Service Department
PO BOX 1230
Bozeman, MT 59771
The location of the Subdivision is shown on the vicinity map in the figure below:
B. Extent of Water Works System
The proposed water works system will be served from the existing City of Bozeman water
distribution system by a 12” main in Cattail St, and 8” mains in Kimberwicke St, Blondie St, and
Veronica Way. This project will provide new mains and services to the proposed developable
lots. At the time of this report, the site design interior to the lots has not been finalized. The
proposed mains and services will be stubbed to allow for future looping within the lots. The
proposed project in relation to nearby mains is displayed on the Water System exhibit in the
Appendix. An overall map of the system from the 2017 Water Facilities Plan showing the
proposed project in relationship to the entire system is also included in the appendix.
C. Alternate Plans
The desired alternative for the project is to connect to the existing City water system. This
alternative is preferred by the City, is the most cost efficient, and provides the least amount of
environmental impacts.
D. Site Conditions
The Four Points subdivision lies in northeast Bozeman, contains delineated wetlands which have
been declared restricted wetland and common open space areas, and has slopes falling northward
between 1% and 2%. There are no delineated floodplains in the subdivision. A geotechnical
report was conducted for the entire Four Points Phase 2 Development in 2015 by Allied
Engineering. In general, soil conditions consist of a layer of topsoil 1.0 to 3.5 ft thick followed
by a layer of silts and clays between 3.0 and 13.5 ft depths, followed by alluvial sandy gravel.
Groundwater was monitored on the site and seasonal high groundwater levels were observed
between 2 and 5 ft below the existing surface. It is anticipated that significant dewatering efforts
will be required for utility construction.
E. Water Use Data
The City of Bozeman establishes an average daily water use rate of 170 gpd per capita. The total
number of persons per unit on average in Bozeman is 2.17 per 2010 census data. The project is
zoned R-4, which is estimated to have 10.4 dwelling units per acre per Table V-1 of the City
Design Standards. The developable acreage is 13.79 acres and the estimated design population is
311 persons. To match the sewer design report, a design population of 414 persons will be used.
Based on this information, the estimated average daily demand of the proposed development is
70,400 gallons per day, or 49 gpm.
In addition to the average daily demand, the water main extension must account for peak periods
of daily use. Peaking factors are applied to the demand and account for these peak periods in
daily use. The peaking factors used are maximum daily use and peak hour and are obtained from
the City of Bozeman Design Standards. The following table summarizes the design demands.
DESIGN DEMAND SUMMARY
Flow Designation Peaking Factor Flow (gpm)
Average Day Demand 1 49
Maximum Day Demand 2.3 113
Peak Hour Demand 3 147
The required fire flow was estimated for allowable uses within the R-4 zone. R-4 zoning allows
apartment buildings and townhouses/rowhouses with five or more attached units. Based on this
criteria, it is estimated that the buildings will have a gross square footage of 20,000 sf, be non-
sprinklered, and have Type IIB & IIIB construction. Per the adopted 2015 International Fire
Code, a 3,000 gpm flow is required for the estimated structure characteristics.
There is an existing Four Points Phase 1 development within the subdivision that consists of 99
dwelling units. For modeling purposes, the estimated average day demand of the existing
development is 25 gpm (99 units * 2.17 persons/unit * 170 gpcd).
F. Flow Requirements
A hydraulic analysis was performed using WaterCAD in order to determine operating conditions
and available fire flow. The model was calibrated to system flow information provided by the
City of Bozeman. The system flow data is included in the appendix. The analysis utilized the
following criteria:
Hazen-Williams “C” Factor of 130
Minimum operating pressure of 20 psi
Maximum velocity of 15 ft/s in the mains under peak hour conditions
Fire flows evaluated during the maximum day demand event
The WaterCAD model shows that the available fire flows range from 3,000 gpm to 5,000 gpm
under the maximum day scenario. Therefore, the proposed water mains within the subdivision
have adequate capacity for the maximum day demand plus fire flow and peak hour demand. No
operating conditions were outside of the required conditions during the peak hour demand. A
WaterCAD exhibit and reports for both the maximum demand plus fire flow and peak hour
scenarios are included in the appendix.
G. Conclusion
Based on this analysis, the proposed 8-inch water main extensions for the development of Four
Points Phase 2 provide adequate service to meet the fire flow plus maximum day demand and the
peak hour flows for the development.
The City of Bozeman will need to confirm that adequate supply exists within their system to
serve the development. This project will require the approval of the City Engineer and MDEQ.
Appendix
Water System Exhibit
Overall System Map
City of Bozeman flow Data
WaterCAD exhibit and reports
Appendix:
Water System Exhibits
PROPOSED
LOT 1 BLK 2
70,767 SF
1.62 ACRES
PROPOSED
LOT 2 BLK 2
179,501 SF
4.121 ACRES
(WETLANDS)
PROPOSED
LOT 1
BLK 1
75,992 SF
1.74 ACRES
(WETLANDS)
PROPOSED
LOT 4 BLK 3
78,120 SF
1.79 ACRES
PROPOSED
LOT 6 BLK 3
487,175 SF
11.18 ACRES
(WETLANDS)
EXISTING LOT 1
MINOR SUB 475
PUBLIC PARK
233,438 SF
5.359 ACRES
ZONING: R3
PROPOSED
LOT 5 BLK 3
24,009 SF
0.55 ACRES
(detention basin)
PROPOSED
LOT 7 BLK 372,136 SF1.66 ACRES(LINEAR PARK)
PROPOSED
LOT 3 BLK 2
30,430 SF0.70 ACRES
(Detention Basin)
PROPOSED
LOT 1 BLK3
9,914 SF
0.23 ACRES
(Lift Station)VERONICA WAYBLONDIE STREET
CATTAIL STREET
KIMBERWICKE STREET DAVIS LANECASPIAN AVEVAQUERO WAYMILKHOUSE AVEFERGUSON AVEKIMBERWICKE STREET
EXISTING LOT 2
MINOR SUB 475
115,826 SF
2.659 ACRES
ZONING: R3
EXISTING LOT 3MINOR SUB 475123,623 SF2.838 ACRESZONING: R4
PROPOSEDLOT 4 BLK 2132,995 SF3.05ACRES
PROPOSED
LOT 2 BLK 1
116,759 SF
2.68 ACRES
PROPOSED
LOT 2 BLK 3
101,437 SF
2.33 ACRES
PROPOSEDLOT 3 BLK 3101,002 SF2.32 ACRES
LEGEND
1" =
0
SCALE
100'
20050100
EXHIBITMADISON ENGINEERING
895 TECHNOLOGY BLVD, STE 203, BOZEMAN, MT 59718
PHONE (406) 586-0262
FOUR POINTS PHASE 2 SANITARY
WATER EXHIBIT
City of Bozeman Flow Data
CITY OF BOZEMAN
Fire Flow Request Form
PHONE (406) 582-3200 FAX (406) 582-3201
Date October 2, 2020
Location Four Points (Cattail St and North Ferguson Ave)
Pressure Zone Northwest
GIS Hydrant ID# 1619,2712,2713
Adjacent Main Size 8-inch DI
Model Scenario Maximum Day Demand, Steady State, Fire Flow
Reference 2017 Water Facility Plan Update1
Hydrant Curves An Excel Spreadsheet with hydrant curves has been provided for the requested
location
Requested Location via the Bozeman Infrastructure Viewer2
If you have questions or need further information feel free to email.
Data Disclaimer: Water distribution information is calculated using hydraulic modeling software and is subject to
variation. Actual field conditions may vary. This information is provided to the requestor for evaluation purposes only,
without warranty of any kind, including, but not limited to any expressed or implied warranty arising by contract, stature, or
law. In no event regardless of cause, shall the City be liable for any direct, indirect, special, punitive or consequential
damages of any kind whether such damages arise under contract, tort, strict liability or inequity.
HOME OF MONTANA STATE UNIVERSITY
GATEWAY TO YELLOWSTONE PARK
1 https://www.bozeman.net/government/engineering/permits-plans-projects
2 https://gisweb.bozeman.net/Html5Viewer/?viewer=infrastructure
GIS Hydrant #
Available Flow (gpm)Residual Pressure (psi)2713
0 116.51
200 115.85
400 115.06
600 114.37
800 113.49
1,000.00 112.45
1,200.00 111.25
1,400.00 109.8
1,600.00 108.94
1,800.00 107.98
2,000.00 106.92
2,200.00 105.74
2,400.00 104.46
2,600.00 103.08
2,800.00 101.71
3,000.00 100.26
3,200.00 98.72
3,400.00 97.08
3,600.00 95.36
3,800.00 93.55
4,000.00 91.66
4,200.00 89.69
4,400.00 87.62
4,600.00 85.48
4,800.00 83.25
5,000.00 80.93
5,200.00 78.54
5,400.00 76.07
5,600.00 73.51
5,800.00 70.88
6,000.00 68.16
6,200.00 65.36
6,400.00 62.49
6,600.00 59.54
6,800.00 56.57
7,000.00 53.52
7,200.00 50.39
7,400.00 47.18
7,600.00 43.89
7,800.00 40.53
8,000.00 37.12
8,200.00 33.71
8,400.00 30.22
8,600.00 26.67
8,800.00 23.01
9,000.00 19.29
9,200.00 15.49
9,400.00 11.62
9,600.00 7.68
9,800.00 3.66
9,979.15 0
Hydrant Curve
0
20
40
60
80
100
120
140
0 2000 4000 6000 8000 10000 12000Residual Pressure (psi)Available Flow (gpm)
Hydrant Curve
2713
Data Disclaimer: Water distribution information is calculated using hydraulic modeling software and is subject to variation. Actual
field conditions may vary. This information is provided to the requestor for evaluation purposes only, without warranty of any
kind, including, but not limited to any expressed or implied warranty arising by contract, stature, or law. In no event regardless of
cause, shall the City be liable for any direct, indirect, special, punitive or consequential damages of any kind whether such
damages arise under contract, tort, strict liability or inequity.
WaterCad Exhibit and Results
Scenario: Four Points Phase 2 - Max Day Plus Fire FlowPage 1 of 127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-166610/6/2020WaterCAD CONNECT Edition Update 2[10.02.00.43]Bentley Systems, Inc. Haestad Methods Solution CenterFour Points Phase 2.wtg
Fire Flow Node FlexTable: Fire Flow Report
Junction w/
Minimum
Pressure (Zone)
Pressure
(Calculated
Residual)
(psi)
Fire Flow
(Available)
(gpm)
Fire Flow
(Needed)
(gpm)
Label
H-8204,1213,000H-1
J-23203,9923,000H-2
H-8203,7313,000H-3
J-17203,7043,000H-4
J-17203,5273,000H-5
J-22203,6663,000H-6
J-23203,6573,000H-7
J-23203,4163,000H-8
J-24202,9713,000H-9
J-5203,8303,000H-10
H-8765,0003,000J-1
H-8605,0003,000J-2
J-4285,0003,000J-3
J-5204,4673,000J-4
J-4204,4573,000J-5
J-5245,0003,000J-6
H-7225,0003,000J-7
H-8235,0003,000J-9
H-8204,5423,000J-10
J-24204,3573,000J-12
J-10204,8863,000J-13
H-8275,0003,000J-14
H-8345,0003,000J-15
H-8445,0003,000J-16
H-5204,9293,000J-17
H-5315,0003,000J-18
J-23455,0003,000J-19
J-23535,0003,000J-20
H-8625,0003,000J-21
H-6225,0003,000J-22
H-8204,3463,000J-23
H-9203,4943,000J-24
H-9204,4973,000J-100
H-8235,0003,000J-101
J-10204,8643,000J-102
Page 1 of 127 Siemon Company Drive Suite 200 W
Watertown, CT 06795 USA +1-203-755-1666
10/13/2020
WaterCAD CONNECT Edition Update 2
[10.02.00.43]
Bentley Systems, Inc. Haestad Methods Solution
CenterFour Points Phase 2.wtg
FlexTable: Junction Table
Pressure
(psi)
Hydraulic Grade
(ft)
Demand
(gpm)
Elevation
(ft)
Label
1184,966.0304,693.00H-1
1194,966.0004,690.00H-2
1194,965.9804,691.00H-3
1184,965.9804,694.00H-4
1164,965.9804,697.00H-5
1174,965.9304,696.00H-6
1154,965.9204,699.00H-7
1134,965.9204,704.00H-8
1144,965.9204,703.00H-9
1174,965.9504,696.00H-10
1164,966.1004,698.00J-1
1194,966.0204,692.00J-2
1174,965.9504,696.00J-3
1154,965.9304,700.00J-4
1154,965.92584,701.00J-5
1174,965.9304,696.00J-6
1154,965.9204,699.00J-7
1154,965.921134,699.00J-9
1144,965.9204,703.00J-10
1144,965.9204,702.00J-12
1154,965.9204,701.00J-13
1164,965.9304,698.00J-14
1174,965.9504,696.00J-15
1194,965.9804,692.00J-16
1164,965.9804,697.00J-17
1184,965.9804,694.00J-18
1194,965.9804,691.00J-19
1194,966.0004,690.00J-20
1184,966.0304,693.00J-21
1174,965.9304,696.00J-22
1134,965.9204,704.00J-23
1144,965.9204,703.00J-24
1154,965.9204,699.00J-100
1184,965.9404,694.00J-101
1154,965.9204,699.00J-102
Page 1 of 127 Siemon Company Drive Suite 200 W
Watertown, CT 06795 USA +1-203-755-1666
10/13/2020
WaterCAD CONNECT Edition Update 2
[10.02.00.43]
Bentley Systems, Inc. Haestad Methods Solution
CenterFour Points Phase 2.wtg
FlexTable: Pipe Table
Velocity
(ft/s)
Flow
(gpm)
Minor Loss
Coefficient
(Local)
Hazen-Williams
C
Diameter
(in)
Stop NodeStart NodeLength
(Scaled)
(ft)
Label
0.491710.000130.012.0PMP-1R-152P-1
0.491710.000130.012.0J-1PMP-142P-2
0.491710.000130.012.0J-21J-1710P-3
0.491710.000130.012.0J-2J-2199P-4
0.27940.000130.012.0J-20J-2490P-5
0.27940.000130.012.0J-19J-20612P-6
0.27940.000130.012.0J-16J-1936P-7
0.0000.000130.012.0J-18J-16562P-8
0.0000.000130.012.0J-17J-18580P-9
0.49770.000130.08.0J-3J-2438P-10
0.20320.000130.08.0J-4J-3531P-11
0.20320.000130.08.0J-5J-4305P-12
0.17-260.000130.08.0J-6J-5490P-13
0.29-450.000130.08.0J-3J-6274P-14
0.12190.000130.08.0J-22J-6265P-15
0.12190.000130.08.0J-14J-22372P-16
0.22340.000130.08.0J-7J-14214P-17
0.22340.000130.08.0J-9J-739P-18
0.36-570.000130.08.0J-15J-9352P-19
0.60-940.000130.08.0J-16J-15147P-20
0.10-160.000130.08.0J-13J-9213P-21
0.0460.000130.08.0J-10J-13188P-22
0.0460.000130.08.0J-23J-10282P-23
0.0460.000130.08.0J-12J-2354P-24
0.0000.000130.08.0J-24J-12366P-25
0.0002.700130.06.0H-1J-2140P-32
0.0002.700130.06.0H-2J-2040P-33
0.0002.700130.06.0H-3J-1958P-34
0.0002.700130.06.0H-4J-1838P-35
0.0002.700130.06.0H-5J-1739P-36
0.0002.700130.06.0H-6J-2226P-37
0.0002.700130.06.0H-7J-726P-38
0.0002.700130.06.0H-8J-2314P-39
Page 1 of 227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA
+1-203-755-1666
10/13/2020
WaterCAD CONNECT Edition Update 2
[10.02.00.43]Bentley Systems, Inc. Haestad Methods Solution CenterFour Points Phase 2.wtg
FlexTable: Pipe Table
Velocity
(ft/s)
Flow
(gpm)
Minor Loss
Coefficient
(Local)
Hazen-Williams
C
Diameter
(in)
Stop NodeStart NodeLength
(Scaled)
(ft)
Label
0.0002.700130.06.0H-9J-2411P-40
0.0002.700130.06.0H-10J-316P-41
0.24-370.000130.08.0J-101J-14294P-100
0.24-370.000130.08.0J-15J-101256P-101
0.14220.000130.08.0J-102J-14205P-102
0.14220.000130.08.0J-13J-102250P-103
0.04-60.000130.08.0J-100J-9336P-104
0.04-60.000130.08.0J-12J-100402P-105
Page 2 of 227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA
+1-203-755-1666
10/13/2020
WaterCAD CONNECT Edition Update 2
[10.02.00.43]Bentley Systems, Inc. Haestad Methods Solution CenterFour Points Phase 2.wtg
FlexTable: Pump Table
Pump Head
(ft)
Flow (Total)
(gpm)
Hydraulic Grade
(Discharge)
(ft)
Hydraulic Grade
(Suction)
(ft)
Status (Initial)Pump DefinitionElevation
(ft)
LabelID
267.111714,966.104,699.00OnPump Definition
- 14,699.00PMP-158
Page 1 of 127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA
+1-203-755-1666
10/13/2020
WaterCAD CONNECT Edition Update 2
[10.02.00.43]Bentley Systems, Inc. Haestad Methods Solution CenterFour Points Phase 2.wtg
FlexTable: Reservoir Table
Hydraulic Grade
(ft)
Flow (Out net)
(gpm)
Elevation
(ft)
LabelID
4,699.001714,699.00R-157
Page 1 of 127 Siemon Company Drive Suite 200 W
Watertown, CT 06795 USA +1-203-755-1666
10/13/2020
WaterCAD CONNECT Edition Update 2
[10.02.00.43]
Bentley Systems, Inc. Haestad Methods Solution
CenterFour Points Phase 2.wtg
FlexTable: Junction Table
Pressure
(psi)
Hydraulic Grade
(ft)
Demand
(gpm)
Elevation
(ft)
Label
1184,965.7804,693.00H-1
1194,965.7404,690.00H-2
1194,965.7104,691.00H-3
1184,965.7104,694.00H-4
1164,965.7104,697.00H-5
1174,965.6204,696.00H-6
1154,965.6004,699.00H-7
1134,965.6004,704.00H-8
1144,965.6004,703.00H-9
1174,965.6504,696.00H-10
1164,965.8904,698.00J-1
1184,965.7704,692.00J-2
1174,965.6504,696.00J-3
1154,965.6304,700.00J-4
1144,965.61764,701.00J-5
1174,965.6304,696.00J-6
1154,965.6004,699.00J-7
1154,965.601474,699.00J-9
1144,965.6004,703.00J-10
1144,965.6004,702.00J-12
1144,965.6004,701.00J-13
1164,965.6204,698.00J-14
1174,965.6504,696.00J-15
1184,965.7104,692.00J-16
1164,965.7104,697.00J-17
1184,965.7104,694.00J-18
1194,965.7104,691.00J-19
1194,965.7404,690.00J-20
1184,965.7804,693.00J-21
1174,965.6204,696.00J-22
1134,965.6004,704.00J-23
1144,965.6004,703.00J-24
1154,965.6004,699.00J-100
1184,965.6304,694.00J-101
1154,965.6104,699.00J-102
Page 1 of 127 Siemon Company Drive Suite 200 W
Watertown, CT 06795 USA +1-203-755-1666
10/13/2020
WaterCAD CONNECT Edition Update 2
[10.02.00.43]
Bentley Systems, Inc. Haestad Methods Solution
CenterFour Points Phase 2.wtg
FlexTable: Pipe Table
Velocity
(ft/s)
Flow
(gpm)
Minor Loss
Coefficient
(Local)
Hazen-Williams
C
Diameter
(in)
Stop NodeStart NodeLength
(Scaled)
(ft)
Label
0.632230.000130.012.0PMP-1R-152P-1
0.632230.000130.012.0J-1PMP-142P-2
0.632230.000130.012.0J-21J-1710P-3
0.632230.000130.012.0J-2J-2199P-4
0.351230.000130.012.0J-20J-2490P-5
0.351230.000130.012.0J-19J-20612P-6
0.351230.000130.012.0J-16J-1936P-7
0.0000.000130.012.0J-18J-16562P-8
0.0000.000130.012.0J-17J-18580P-9
0.641000.000130.08.0J-3J-2438P-10
0.27420.000130.08.0J-4J-3531P-11
0.27420.000130.08.0J-5J-4305P-12
0.22-340.000130.08.0J-6J-5490P-13
0.37-580.000130.08.0J-3J-6274P-14
0.16240.000130.08.0J-22J-6265P-15
0.16240.000130.08.0J-14J-22372P-16
0.28440.000130.08.0J-7J-14214P-17
0.28440.000130.08.0J-9J-739P-18
0.47-740.000130.08.0J-15J-9352P-19
0.78-1230.000130.08.0J-16J-15147P-20
0.13-210.000130.08.0J-13J-9213P-21
0.0580.000130.08.0J-10J-13188P-22
0.0580.000130.08.0J-23J-10282P-23
0.0580.000130.08.0J-12J-2354P-24
0.0000.000130.08.0J-24J-12366P-25
0.0002.700130.06.0H-1J-2140P-32
0.0002.700130.06.0H-2J-2040P-33
0.0002.700130.06.0H-3J-1958P-34
0.0002.700130.06.0H-4J-1838P-35
0.0002.700130.06.0H-5J-1739P-36
0.0002.700130.06.0H-6J-2226P-37
0.0002.700130.06.0H-7J-726P-38
0.0002.700130.06.0H-8J-2314P-39
Page 1 of 227 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA
+1-203-755-1666
10/13/2020
WaterCAD CONNECT Edition Update 2
[10.02.00.43]Bentley Systems, Inc. Haestad Methods Solution CenterFour Points Phase 2.wtg
FlexTable: Pipe Table
Velocity
(ft/s)
Flow
(gpm)
Minor Loss
Coefficient
(Local)
Hazen-Williams
C
Diameter
(in)
Stop NodeStart NodeLength
(Scaled)
(ft)
Label
0.0002.700130.06.0H-9J-2411P-40
0.0002.700130.06.0H-10J-316P-41
0.31-490.000130.08.0J-101J-14294P-100
0.31-490.000130.08.0J-15J-101256P-101
0.18290.000130.08.0J-102J-14205P-102
0.18290.000130.08.0J-13J-102250P-103
0.05-80.000130.08.0J-100J-9336P-104
0.05-80.000130.08.0J-12J-100402P-105
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10/13/2020
WaterCAD CONNECT Edition Update 2
[10.02.00.43]Bentley Systems, Inc. Haestad Methods Solution CenterFour Points Phase 2.wtg