HomeMy WebLinkAbout19 - Design Report - Cannery District Ph 3 - WaterWater Main Extension Engineer’s Report
Cannery District PUD
Phase 3 Update
April 3, 2019
For Submittal to:
City of Bozeman Engineering Department
20 East Olive
Bozeman, MT 59715
Montana Department of Environmental Quality
Permitting and Compliance Division
Public Water and Subdivisions Bureau
PO Box 200901
Helena, MT 59620-0901
Prepared by:
Stahly Engineering and Associates
851 Bridger Drive, Suite 1
Bozeman, MT 59715
(406) 522-9526
Water Engineer’s Report 1 4/8/2019
Engineer’s Water Report
Contents
Note: The Engineer’s Report format for the Cannery District Phase 3 Water Main
Extension follows DEQ-1 organization. Additional information required by the
City of Bozeman Design Standards is added where required.
Report Narrative
1.1.1 General information
1.1.2 Extent of water works system
1.1.3 Alternate plans
1.1.4 Site conditions
1.1.5 Water use data
1.1.6 Flow requirements
1.1.7 Sewage system available
1.1.8 Sources of water supply
1.1.9 Proposed treatment processes
1.1.10 Waste disposal
1.1.11 Automation
1.1.12 Project Sites
1.1.13 Financing
1.1.14 Future Extensions
Figures and Tables
Figure 1. Vicinity Map
Figure 2. Water Site Plan (included separately)
Table 1. Detailed Cannery District Water Usage
Appendices
A WaterCAD Hydraulic Analysis
Water Engineer’s Report 2 4/8/2019
1.1.1 General Information
The Cannery District is a multi-phase development located on the north
side of East Oak Street and Rouse Avenue, north of the Gallatin County
Fairgrounds. The existing property consists of several parcels of land
within the City and County, with 5.24 acres within the City and 6.98 acres
in the county.
The development consists of four phases. The first phase, which was
completed in 2016, consisted of remodeling four existing buildings
originally constructed as part of the original pea canning operation in
1917. Phases 2, 3 and 4 involve the construction of six new buildings on
the Cannery District property. Phases 2 and 4 improvements were
completed in 2018, leaving only the proposed Phase 3 improvements
unconstructed.
This report addresses the water improvements associated with the final
phase of the Cannery District PUD (Phase 3), and compares the
originally-estimated water demands with demands based on actual uses
of the built-out development. Water demands from these future phases
were accounted for in the design of the previously constructed phases.
The tracts that are currently county lands will be annexed into the City
prior to development, in order to receive municipal services for new
buildings.
The developer’s contact information is:
Cannery District Partners, LLC
113 East Oak Street, Ste 4A
Bozeman, MT 59715
Water supply and wastewater treatment will be provided by the City of
Bozeman’s municipal systems. The system owner’s contact information
is:
City of Bozeman Public Service Department
PO Box 1230
Bozeman, MT 59771-1230
The location of the Cannery District is shown on the Vicinity Map in Figure
1. See Figure 2 for Phase 1 through 4 improvements.
Water Engineer’s Report 3 4/8/2019
Figure 1. Vicinity Map, Bozeman, Montana
1.1.2 Extent of Water Works System
Water supply to the area is from a 12” water main in Oak Street and
Montana Avenue. The water main predates the current Oak Street
alignment and follows older rights-of-way. As part of the overall
development plan this water main will remain, and the existing on-site
rights-of-ways have been replaced with 30’ water and sewer easements.
The location of existing and proposed mains is shown on the Water Site
Plan, Figure 2, included separately.
The previously constructed Phase 1, 2 and 4 improvements include new
8” water mains that replaced the old water mains on-site. The new mains
essentially follow the same route as the old water main loop around the
buildings. However, the new mains have allowed installation of new on-
site fire hydrants, and new individual fire and water services to each
building. The new water services are metered in the buildings. The new
8” water main loop allows for future extensions or services to serve future
phases. Stubs for future water main extensions or services have been
extended beneath Phase 1 site improvements.
Phase 2 water main improvements consisted of installing new water
services to two buildings from the existing mains, relocating a fire hydrant,
adding an additional fire hydrant, and connecting existing water mains on
the east end of the site.
The main extension proposed in Phase 3 improvements is shown on the
Water Site Plan and will service two new buildings containing office, retail,
Water Engineer’s Report 4 4/8/2019
and residential spaces. The two proposed buildings are designated as
Buildings ‘L’ and ‘M’; Building ‘L’ is a mixed-use building containing office
space under 52 residential units, and Building ‘M’ is a 21,934 gsf building
that will contain office uses. It is anticipated the Building ‘L’ will be
serviced by a 4” domestic service line and a 6” fire line, and Building ‘M’
will be serviced by a 1 ½” domestic service line and a 4” fire service line.
1.1.3 Alternate Plans
Due to the project’s location within the City of Bozeman, extension of
public mains was the only water supply alternative.
1.1.4. Site Conditions
The site is typical of Bozeman with fine grained soils overlying gravel
deposits. Geotechnical borings have determined the general soil profile
consists of 1.5 to 7.0 feet of fine grain silt and clay overlying alluvial
gravel. Estimated depth to groundwater obtained from the geotechnical
borings is 6.5 -11 feet. If mains are installed during high groundwater
times dewatering may be required.
1.1.5. Water Use Data
The water use estimates for the Cannery District were originally
determined using wastewater flow rates for zoned undeveloped areas
from the City of Bozeman Design Standards and Specifications Policy,
Table V-1. Table V-1 shows a flow rate of 2000 Gal./Acre/Day for zoning
designation B-2. This water use estimate was used to set demands for
the inititial hydraulic modeling of the Cannery District development and
resulted in an average daily water use rate of 24,468 gpd and a peak hour
flow of 170 gpm.
Since the Cannery District is largely built out, and the specific uses of the
proposed Phase 3 buildings are known, water usage for this phase and
the entire development was determined using the following values for
average water use rates:
Office/Retail 10,000 gal/yr/1000sf
Restaurant 165,000 gal/yr/1000sf
Residential 89 gal/day/person
Updated calculations, based on actual building area uses, estimate an
average daily water use rate of 21,489 gpd--which is under the originally-
estimated 24,468 gpd—and a peak hour flow of 149 gpm, which is under
the originally-estimated 170 gpm. See summary of calculations in Table
1.
TABLE 1: Detailed Cannery District Water Usage 4/3/2019
Cannery District Phase 1 Area **Peak Hr Flow
Use by Building (gsf)gpd/1000 sf GPD (ac‐ft/yr)(gpm)
Cannery Building (Bldg E)
Office/Retail 16,897 30 507 0.57 3.5
Restaurant/Bar 7,663 500 3,832 4.29 26.6
Building Common Area 3,773 30 113 0.13 0.8
Subtotal 28,333 4,452 4.99 30.9
Cannery Complex (Bldg F)
Office/Retail 7,621 30 229 0.26 1.6
Restaurant/Bar 7,505 500 3,753 4.20 26.1
Building Common Area 625 30 19 0.02 0.1
Subtotal 15,751 4,000 4.48 27.8
Canning Warehouse (Bldg G)
Office/Retail 14,041 30 421 0.47 2.9
Restaurant/Bar 1,365 500 683 0.76 4.7
Building Common Area 3,066 30 92 0.10 0.6
Subtotal 18,472 1,196 1.34 8.3
Boiler House (Bldg H)
Office 2,100 30 63 0.07 0.44
Total of Phase 1 9,710 10.88 67.43
Cannery District Phase 2 Area **Peak Hr Flow
Use by Building (gsf)gpd/1000 sf GPD (ac‐ft/yr)(gpm)
Building J
Office 1,500 30 45 0.05 0.3
Gym 11,900 100 1,190 1.33 8.3
Subtotal 13,400 1,235 1.38 8.6
Building K
Office 3,245 30 97 0.11 0.7
Gym 4,607 100 461 0.52 3.2
Building Common Area 3,391 30 102 0.11 0.7
Subtotal 11,243 660 0.74 4.6
Total of Phase 2 1,895 2.12 13.2
Cannery District Phase 4 Area **Peak Hr Flow
Use by Building (gsf)gpd/1000 sf GPD (ac‐ft/yr)(gpm)
Bldg N
Office/Retail 8,712 30 261 0.29 1.8
Building Common Area 1,584 30 48 0.05 0.3
Subtotal 10,296 309 0.35 2.1
Bldg O
Office/Retail 14,378 30 431 0.48 3.0
Restaurant/Bar 1,642 500 821 0.92 5.7
Building Common Area 2,504 30 75 0.08 0.5
Subtotal 18,524 1,327 1.49 9.2
Total of Phase 4 1,636 1.83 11.4
Cannery District Phase 3 Area **Peak Hr Flow
Use by Building (gsf)gpd/1000 sf GPD (ac‐ft/yr)(gpm)
Bldg L
Office/Retail 14,926 30 448 0.50 3.1
*Residential 7,142 8.00 49.6
Subtotal 7,590 8.50 52.7
Bldg M
Office 21934 30 658 0.74 4.6
Total of Phase 3 8,248 9.24 57.3
TOTAL ALL PHASES 21,489 24.07 149.2
* Residential Use calculated using 89 gal/person/day, 80.25 estimated people
** Peaking Factor used for Avg Day to Peak Hour 10
Average Water Use
Average Water Use
Average Water Use
Average Water Use
Water Engineer’s Report 6 4/8/2019
All existing and proposed buildings will have fire sprinklers. With this
provision and the size of the buildings, required fire flows will likely be
1500 gpm.
Existing irrigation to Phases 1-4 is provided by wells. The estimated total
area of landscape irrigation is approximately 3.43 acres, within the exempt
well water right limits.
1.1.6. Flow Requirements
A hydraulic analysis was performed using WaterCAD. The WaterCAD
model incorporates the 12” diameter city water main as the primary
supply. Operating conditions and available fire flow in these mains was
obtained from the WaterCAD model results provided in the City of
Bozeman Water Facility Plan and hydrant flow data performed at a
hydrant directly south of Phase 1 Cannery District. The fire flow analysis
was conducted at the maximum day demand.
The model is setup with existing and new pipes. Phase 1 pipes and
junctions begin with numbers >100 (the Phase 2 pipe is labeled 201, and
Phase 3 pipe numbers are labeled >300). Junction elevations are based
on the project datum, approximately 15’ above the City of Bozeman
datum. In order to determine fire flows at hydrants, hydrant lead pipes are
provided to junctions representing hydrants. Hydrant lead pipes have
minor losses corresponding to hydrant barrel and nozzle losses. Fire
flows are determined at hydrant residual pressures of 20 psi. Fire flows
determined at non-hydrant junctions are of little practical value since
without hydrant losses computed fire flows are artificially high.
A Hydrant flow test was conducted at the hydrant south of Phase 1. The
city water supply was modeled as a reservoir-pump system calibrated to
the hydrant test. The pump curve provides decreasing pressures with
increasing flows corresponding to head losses in the distribution system
outside of the model. The model results with only existing pipes utilized
correspond well with the flows and residual pressures measured during
the hydrant test.
The WaterCAD model results are included in Appendix A of this report.
Due to the high pressure in the water system at this location, available fire
flow is not limited by residual pressure. The maximum permissible
velocity of 15 fps in the 8” ductile iron water mains limits the fire flow
available to 2530 gpm, which exceeds the required fire flow. The model
shows the proposed water main improvements are capable of providing
the required fire flow plus maximum day demand for the project.
Water Engineer’s Report 7 4/8/2019
The layout of the water system has each building with its own water and
fire service, as shown in Figure 2. Final determination of water service
sizes will be based on fixture counts for each building.
1.1.7. Sewage System Available
Sewer service is provided by city mains that have been replaced as part of
the previously constructed Phase 1 improvements. Where water mains
cross sewer mains, 18” of vertical separation is provided.
1.1.8. Sources of Water Supply
This section is not applicable.
1.1.9 Proposed Treatment Process
This section is not applicable.
1.1.10 Waste Disposal
This section is not applicable.
1.1.11 Automation
This section is not applicable.
1.1.12 Project Sites
This section is not applicable.
1.1.13 Financing
This section is not applicable.
1.1.14 Future Extensions
When the Phase 3 mains are constructed, that will conclude the proposed
water main infrastructure for the Cannery District with its current size of
12.2 acres. Provisions have been main for mains to be extended outside
of the development’s current boundary if, and when, needed.
Figure 2
Water Site Plan
OAK STREETSTORMWATERRETENTION BASIN/SNOW STORAGESDSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS30 SPACES40 SPACES15 SPACES22 SPACES22 SPACES20 SPACES9 SPACES6 SPACES8 SPACES23 SPACES13 SPACES 11 SPACESSDSDSD SDSDSDWATERTOWERBLDG OBLDG HBLDG NBLDG GBLDG FBLDG KBLDG JBLDG CBLDG DBLDG BBLDG A32 SPACES29 SPACESPARKING PLAZA14 SPACESEXISTINGFAIRGROUNDSACCESS
ROUSE AVE RAIL TRAILTRASHTRASHTRASH20' ROW FOR OAKSS SS SS SS SS
SD
SD
SD SD SD SD SD SD
SD
8''W8''W8''W8''W8''W8''W8''W8''WSDSDSTORIESSS SS SSUSE DESIGNATIONGROSSAREA(SF)PHASE 4BLDG N5,412210,296OFFICESSSSSSSSSSSSSSSSSSSSSSSS SS SS SS
SSSSSSSSSSSSSSSSSSSSSSSSBLDG ESD SD
SD SD SD SD SD SD SD SD SD
SD
SDSDSDSDSDSDSDSD SD SD SD SD SDSDSDSD
10 SPACESSS
SS
SS SS
SSSS5 SPACES 25 SPACESTOWER TRAIL TRASHSD8 SPACES17 SPACESSS SS STORMWATER BIOSWALE/SNOW STORAGEPHASE/BUILDINGPHASE 1BLDG E9,231428,333RETAIL, RESTAURANT, OFFICEBLDG F12,0201&215,751RETAIL, BREWERY, OFFICEBLDG G13,7601&219,324OFFICEBLDG H1,6001&22,100OFFICEFOOT-PRINT(SF)PHASE 2BLDG K8,9621+MEZZ11,838MEDICAL & OFFICENORTHSIDE PUD(EXISTING)SD SD SD
SDBIOSWALEBIOSWALE
PATIOPATIO PATIOBIOSWALEBIOSWALE
MAINT.
SSC LANED LANE
A LANE
B LANEG LANEA LANE
C LANE E LANESD SD SDSDSDSDSDSDSSSD SD SD109 E. OAK1285 N. ROUSESS SS SS
SS
SS SS105 E. OAK107 E. OAK115 E. OAK111 E. OAK117 E. OAK1237 N. ROUSE1251 N. ROUSEPROPERTY LINE1203 N. ROUSE113 E. OAKPROPERTY LINE
211 E. OAKPROPERTY LINEPROPERTY LINESS SS SS SDSDPATIO12''W12''W12''W12''W12''W12''W12''W12''W12''W12''W12''W 12''W 12''W 12''W 12''W 12''W 12''W 12''W 12''W12''W12''W12''W12''W12''W12''W12''W12''W12''W12''W12''W12''W12''W12''W12''W12''W12''W12''W12''W12''W12''W12''W12''W12''W12''W12''W 12''W 12''W 12''W 12''W<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<SSSDSDSDPROPERTY LINESSSDSDSDOAK STREETBLDG J11,9001+MEZZ13,400HEALTH & EXERCISESSSDSDSDSDSDSDSDSDSDSDSDSDSDSDSDSD<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<TRASHBLDG M11 SPACESBLDG L13 SPACES16 SPACES11 SPACES13 SPACES9 SPACES9 SPACES27 SPACESRAIL TRAILLOADINGRAIL TRAILPHASE 3BLDG L17,946461,621OFFICE w/RESIDENTIAL ABOVEBLDG M8,1652+BSMT22,176OFFICE w/BASEMENT STORAGEPARKING PLAZA20 SPACESE LANEF LANE231 E. OAK221 E. OAK5 SPACES10 SPACESRESERVED RESIDENTIALCOVERED PARKING
RESERVED RES.COVERED PARKINGRESERVED RES.COVERED PARKINGRESERVED RESIDENTIALCOVERED PARKINGRESERVED RES.COMPACT. COV. PARKINGLOADINGBLDG O8,9501&318,524OFFICE, RESTAURANTTOTAL97,946203,363PROPOSED PHASE 3 WATERMAINS, SERVICES ANDHYDRANTS (DASHED BLUE)30' WIDE WATER-SEWER EASEMENTSEXISTING WATER MAINSEXISTING HYDRANTON EXISTING MAIN30' WIDE WATER-SEWER EASEMENTS30' WIDE WATER-SEWER EASEMENTSEXISTINGWATER MAINSCANNERY DISTRICTPHASE 3 EXTENTSIN FEETPROFESSIONALENGINEERS &SURVEYORSCANNERY DISTRICTPHASE 3 STAHLYENGINEERING& ASSOCIATESCANNERY DISTRICTPARTNERS, LLCWATER SITEPLANFIGURE 2
Appendix A
WaterCAD Modeling
FlexTable: Pipe Table
Current Time: 0.000 hours
Length (User
Defined)
(ft)
Velocity
(ft/s)
Flow
(gpm)
Minor Loss
Coefficient
(Local)
Hazen-Williams
C
Diameter
(in)
Stop NodeStart NodeLength
(Scaled)
(ft)
Label
10.56-2120.000130.012.4R-1PMP-114P-0
10.56-2120.000130.012.4PMP-1J-116P-1
10.291090.000130.012.4J-2J-1642P-2
00.20740.000130.012.4J-3J-2351P-3
00.20740.000130.012.4J-4J-3311P-4
00.18670.000130.012.4J-5J-425P-5
00.18670.000130.012.4J-6J-5191P-6
00.27-1030.000130.012.4J-7J-698P-7
0(N/A)(N/A)0.000130.08.3J-8J-741P-8
0(N/A)(N/A)2.700130.06.2HJ-9J-84P-9
00.13340.000130.010.3J-10J-2270P-10
00.20340.000130.08.3J-11J-10304P-11
00.27-1030.000130.012.4J-12J-7361P-12
10.27-1030.000130.012.4J-1J-12523P-13
01.011700.000130.08.3J-100J-6120P-100
01.011700.000130.08.3J-101J-10027P-101
00.44750.000130.08.3J-102J-101202P-102
00.18300.000130.08.3J-103J-10265P-103
00.18300.000130.08.3J-104J-103361P-104
00.29-490.000130.08.3J-105J-104123P-105
00.29-490.000130.08.3J-101J-105493P-106
00.16270.000130.08.3J-107J-104124P-107
00.0002.700130.06.2HJ-108J-10711P-108
00.0002.700130.06.2HJ-109J-10313P-109
00.0002.700130.06.2HJ-110J-10514P-110
00.0002.700130.06.2HJ-111J-10024P-111
00.05-80.000130.08.3J-4J-1148P-201
00.27450.000130.08.3J-301J-102289P-301
00.0002.700130.06.2HJ-302J-30111P-302
Page 1 of 127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA
+1-203-755-1666
11/12/2014
Bentley WaterCAD V8i (SELECTseries 4)
[08.11.04.50]Bentley Systems, Inc. Haestad Methods Solution CenterCDi WATERCAD.wtg
FlexTable: Junction Table
Current Time: 0.000 hours
Pressure
(psi)
Hydraulic Grade
(ft)
Demand
(gpm)
Elevation
(ft)
Label
(N/A)(N/A)(N/A)4,752.00HJ-9
1575,111.4504,748.00HJ-108
1565,111.4604,750.00HJ-109
1565,111.4604,751.00HJ-110
1565,111.5004,750.00HJ-111
1565,111.4504,751.00HJ-302
1545,111.5904,756.00J-1
1545,111.5904,756.00J-2
1545,111.5804,756.00J-3
1545,111.5704,755.00J-4
1555,111.5704,754.00J-5
1565,111.5704,752.00J-6
1565,111.5704,752.00J-7
(N/A)(N/A)(N/A)4,752.00J-8
1545,111.5804,755.00J-10
1545,111.57424,755.00J-11
1545,111.5904,756.00J-12
1565,111.5004,750.00J-100
1565,111.49464,750.00J-101
1565,111.4604,750.00J-102
1565,111.4604,750.00J-103
1575,111.45524,749.00J-104
1565,111.4604,751.00J-105
1575,111.45274,748.00J-107
1565,111.45454,751.00J-301
Page 1 of 127 Siemon Company Drive Suite 200 W
Watertown, CT 06795 USA +1-203-755-1666
11/12/2014
Bentley WaterCAD V8i (SELECTseries 4)
[08.11.04.50]
Bentley Systems, Inc. Haestad Methods Solution
CenterCDi WATERCAD.wtg
Fire Flow Node FlexTable: Fire Flow Report
Current Time: 0.000 hours
Junction w/
Minimum
Pressure
(System)
Pressure
(Calculated
System Lower
Limit)
(psi)
Junction w/
Minimum
Pressure (Zone)
Pressure
(Calculated
Residual)
(psi)
Fire Flow
(Available)
(gpm)
Label
(N/A)(N/A)(N/A)(N/A)(N/A)HJ-9
J-10793J-107355,000HJ-108
J-103114J-103565,000HJ-109
J-105108J-105505,000HJ-110
HJ-302135HJ-302715,000HJ-111
J-30178J-301215,000HJ-302
J-3152J-31525,000J-1
J-3152J-31525,000J-2
J-4151J-41495,000J-3
J-11150J-111505,000J-4
J-4150J-41505,000J-5
J-4150J-41515,000J-6
J-4151J-41515,000J-7
(N/A)(N/A)(N/A)(N/A)(N/A)J-8
J-11151J-111465,000J-10
J-4150J-41475,000J-11
J-3152J-31525,000J-12
HJ-302135HJ-3021355,000J-100
HJ-302131HJ-3021315,000J-101
HJ-302116HJ-3021175,000J-102
HJ-109114HJ-1091145,000J-103
J-107109J-1071085,000J-104
HJ-110108HJ-1101085,000J-105
HJ-10893HJ-108935,000J-107
HJ-30278HJ-302785,000J-301
Page 1 of 127 Siemon Company Drive Suite 200 W
Watertown, CT 06795 USA +1-203-755-1666
11/12/2014
Bentley WaterCAD V8i (SELECTseries 4)
[08.11.04.50]
Bentley Systems, Inc. Haestad Methods Solution
CenterCDi WATERCAD.wtg