HomeMy WebLinkAbout2-1 Water Report
2695 Tschache Lane
City of Bozeman
Water Main Extension
DEQ Circular-1
Engineering Report
Prepared By:
1055 Mount Avenue
Missoula, MT 59801
MMI #: 10093.001
February 2023
Table of Contents
Introduction ................................................................................................................................ 3
Water Main Design Parameters ................................................................................................. 3
1.1 General Information ..................................................................................................... 3
1.2 Extent of Water Works System .................................................................................... 4
1.3 Alternate Plans ............................................................................................................ 5
1.4 Site Conditions ............................................................................................................. 5
1.5 Water Use Data ........................................................................................................... 5
1.6 Flow Requirements ...................................................................................................... 7
1.7 Sources of Water Supply ............................................................................................. 7
1.8 Proposed Treatment Processes ................................................................................... 7
1.9 Sewage System Available ............................................................................................ 8
1.10 Waste Disposal ............................................................................................................ 8
1.11 Automation .................................................................................................................. 8
1.12 Project Sites................................................................................................................. 8
1.13 Financing ..................................................................................................................... 8
1.14 Future Extensions ........................................................................................................ 9
Conclusion ................................................................................................................................. 9
ATTACHMENTS:
City of Bozeman 2020 Annual Drinking Water Report
City of Bozeman Hydrant Flow Test Data
City of Bozeman Fire Marshall Hydrant Coordination Documents
Will Serve Letter from City of Bozeman (To be provided upon review/acceptance)
Retainage of professional engineering services letter from The Voyager Company
Written By: CCF Checked By: TBM
Approved By: WEH
Project No.: ____10093.001
INTRODUCTION
The Voyager Company contracted with SCB architects and Morrison-Maierle to design the 2695
Tschache Lane Development. The proposed development consists of 3 apartment buildings, 46
townhouses, 3 single-family residences, a clubhouse and gear garage. The proposed
development requires improvements for the water supply. To provide domestic and fire service
to the proposed buildings, a water main extension is required. Water main extensions are
proposed to create a looped system within the proposed development through connection in
four locations to existing ductile iron water mains. Connections will be made to main stubs
located at Trade Wind Lane, Turbulence Lane, and Tschache Lane. Another connection will be
made at the new Bozeman West Apartments development to the east within Turbulence Lane.
The main extensions will run north/south below proposed North 25th Avenue and east/west
below proposed Turbulence Lane consisting of 8-inch ductile iron pipe. The main extensions will
ensure that the system supplying the proposed development is adequate for both domestic and
fire flow demands.
WATER MAIN DESIGN PARAMETERS
The following parameters were considered during the design of the 2695 Tschache Lane
Project water main extension:
• Proposed water main will be Class 51 8-inch ductile Iron meeting AWWA C151.
• There are eight (8) existing hydrants adjacent to the development. Two (2) proposed
hydrants will be installed to provide adequate building coverage and meet Fire
Department service requirements.
• New 2-inch Type K Copper combination domestic and fire water service for the “Single
Unit” buildings.
• New 1.5-inch Type K Copper domestic water service for the “Row Home” buildings.
• New 4-inch Class 51 Ductile Iron fire service for the “Row Home” buildings.
• New 2-inch Type K Copper domestic water service for the “Clubhouse” building.
• New 4-inch Class 51 Ductile Iron fire service for the “Clubhouse” building.
• New 2-inch Type K Copper domestic water service for the “Gear Garage” building.
• New 4-inch Class 51 Ductile Iron fire water service for the “Gear Garage” building.
• New 4-inch Class 51 Ductile Iron domestic water service for the “Flat” buildings.
• New 6-inch Class 51 Ductile Iron fire service for the “Flat” buildings.
• Design bury depth of 6.5-feet minimum.
• Project will be constructed in accordance with City of Bozeman Public Works Standards
and 7th Edition Montana Public Works Standard Specifications (MPWSS).
• Provide minimum 10-foot edge to edge horizontal separation between water main and
sanitary and storm sewer mains.
• Minimize vertical and horizontal bend where possible.
• Valve placement at strategic locations to maximize flexibility and minimize service and
fire protection interruptions due to water main shutdowns.
• Minimize disruption to residential services during construction. Temporary water supply
is not anticipated for the 2695 Tschache Lane Development as water main construction
is scheduled prior to buildout.
1.1 General Information
a. Description of the existing water works and sewer facilities:
The current system is owned and operated by the City of Bozeman PWSID 0000161.
The sewer system within the project area is also owned and operated by the City of
Bozeman. A sewer main extension is proposed to ensure service is provided to buildings
within the project site. The existing water system consists of an 8-inch ductile iron main
located below Tschache and Trade Wind Lanes and a 10-inch ductile iron water main
located below N 27th Ave..
This project will extend approximately 1,460 lineal feet of new 8-inch ductile iron water
main to serve the proposed development. Connections will be made at locations
described above. Water mains will be located in the proposed roadways within North
25th Avenue and Turbulence Lane. These improvements will allow domestic and fire
service lines to provide water supply to the new buildings. Two new hydrants will be
installed to provide adequate fire coverage and meet location requirements for fire
department connections. The proposed hydrants will be located along Turbulence Lane.
The proposed extension will improve the water supply systems as loops will be created
from previously dead-end stubs.
b. Identification of the municipality served:
The proposed water main extension will primarily serve the 2695 Tschache Lane
Development and be served by the City of Bozeman.
c. Name and mailing address of the owner, developer, and official custodian:
Owner/Custodian
City of Bozeman, Water / Sewer Department
C/O Nick Pericich, Water / Sewer Superintendent
814 N Bozeman Ave.
Bozeman, MT 59715
Developer:
The Voyager Company
1999 Circle Drive
Cleveland, OH 44106
d. Imprint of professional engineer’s seal:
A Professional Engineer’s seal is included on the construction plans and the Certified
Checklist.
1.2 Extent of Water Works System
a. Description of the nature and extent of the area to be served:
The proposed 8-inch water main extensions will primarily serve the 2695 Tschache Lane
Development. The proposed extensions will provide adequate domestic and fire flow
demands.
b. Provisions for extending the water work system to include additional areas:
Extension of the system to serve this project includes approximately 1,460 lineal feet of
8-inch ductile iron water main to serve the proposed 2695 Tschache Lane development.
Additional extension is not anticipated as tie-ins to surrounding mains to create a looped
system within the area will be completed through this project. Surrounding areas are
already developed or currently under construction for development.
c. Appraisal of the future requirements for service including existing and potential industrial,
commercial, institutional, and other water supply needs:
The project provides water for the needs of the 2695 Tschache Lane Development. The
main extension provides the flow demands required for the proposed development
residential development. Additional proposed development on-site is not anticipated as
full buildout of the lot will be completed with this project and surrounding areas are
already developed or currently under construction for development.
1.3 Alternate Plans
a. The chosen alignment and connections were chosen to meet the layout of the proposed
development and supply adequate domestic and fire flows for the project. There was no
need for connection to Baxter Lane to serve the proposed development or future
development.
1.4 Site Conditions
a. The character of soil through which water are to be laid:
Soils on site consist of topsoil, silt, sand, and lean clay overlain over sandy gravels and
cobbles per the Geotechnical Report completed by Terracon on July 29th, 2022. Topsoil
is noted to be 0.5 feet in thickness. The Water main will be laid through sandy gravels
and cobbles.
b. Foundation conditions prevailing at sites of proposed structures:
Based on the soils within the project site, “target” foundation bearing materials are
anticipated to be the silty, sandy gravel deposit. Soils shall be excavated to the “target”
foundation, and then backfilled with compacted, granular, structural fill in accordance
with the geotechnical report, MPWSS and City of Bozeman Standards.
c. The approximate elevation and flow direction of ground water in relation to subsurface
structures:
Groundwater was encountered between depths of 5.5’ and 11’ below the existing ground
surface during Terracon’s explorations. Groundwater is presumed to flow from the
Southwest to the Northeast based on groundwater elevations from the geotechnical
report.
1.5 Water Use Data
a. Description of the population trends as indicated by available records, and the estimated
population of which will be served by the proposed water supply system or expanded
system, a minimum of 20 years in the future in five-year intervals or over the useful life of
the critical structures and equipment:
The subject property is currently undeveloped. The proposed improvements include
three (3) apartment buildings, 46 2-bedroom townhouses, two (2) 3-bedroom single
family residences and one (1) 4-bedroom single family residence. There are no
anticipated increase in population as the development includes full buildout and
surrounding areas are already developed or under construction for development.
b. Present water consumption and the project average and maximum daily demands or
peak instantaneous demand where appropriate, including fire flow demand:
Average daily flows are calculated based on City of Bozeman Design Standards. Peak
flows are provided by the Project Mechanical Engineer. The estimated demands are
summarized below:
Average Daily Flow
Zoned R4 (per the City of Bozeman) = 1,950 gallons/acre/day (COB Design Standards
Table V-1)
Subject property size = 14.428 acres
Average Daily Flow (ADF) = 1,950 gallons/acre/day x 14.428 acres = 28,135 gallons/day
= 19.54 gpm
Because R4 zoning is designated as 10.4 DU/acre and the proposed development is
higher density, the ADF has been multiplied to account for the higher density. The
proposed development includes 343 dwelling units (23.7 DU/acre).
Average Daily Flow (ADF) = 28,135 gallons/day x 2.29 = 64,429 gallons/day
= 44.74 gpm
Peak Flow
Single Family Residence = 20 gpm
2-plex Rowhome = 28 gpm
4-plex Rowhome = 39 gpm
Apartment = 260 gpm
Clubhouse = 80 gpm
Gear Garage = 53 gpm
Fire Flow
Hydrant flow test data was requested and provided by the City of Bozeman for
surrounding hydrants within the proposed project area. Hydrants located on Trade Wind
Lane indicated 76 and 88 psi with flows of 1,465 gpm. Hydrant located at Baxter Lane
and proposed North 25th Avenue indicated 85 psi with flow of 1,465 gpm.
Fire Flow Demand = 1,500 gpm at 20 psi
Irrigation Demand
Irrigation demands were received from the Project Landscape Architect (Design 5) and
are based on proposed landscape features and water requirements. Irrigation flows will
be handled through a separate groundwater well limited to production of 10
acre/feet/year.
Irrigation Flow = 3.31 acre/feet/year
c. Present and/or estimated yield of the sources of supply:
Water will be supplied to the development by the City of Bozeman public water supply
system. Supply of water is not considered an issue.
d. Unusual occurrences:
There are no unusual occurrences.
e. Current estimated percent of unaccounted water for the system and the estimated
reduction of unaccounted water after project completion, if applicable:
The amount of unaccounted water for the system is unknown. The main extension will
ensure that all fittings, joints and appurtenances are tight to eliminate leaks. Testing of
the main extension, in accordance with MPWSS and City of Bozeman Standards, will be
completed and certified by a professional engineer.
1.6 Flow Requirements
a. Hydraulic analyses based on flow demands and pressure requirements:
The City of Bozeman was contacted to determine if adequate fire flow could be met at
the proposed hydrant location. Hydrants flow tests were requested from the City of
Bozeman and provided for hydrants located on Trade Wind Lane and at Baxter Lane
and proposed North 25th Avenue. Hydrant flow test data received from the City of
Bozeman are attached.
b. Fire flows, when fire protection is provided, meeting the recommendations of the fire
protection agency in which the water system is being developed or in the absence of
such a recommendation, the fire code adopted by the State of Montana. Documentation
from the fire protection agency may be required if the flow requirements vary significantly
from typical values:
Fire flow demand is calculated based on building construction type, square footage and
the fire suppression system proposed. Calculations are in accordance with IFC and were
performed by Ace Inc. A fire flow request was performed by the City of Bozeman, and
the results of that test are attached.
1.7 Sources of Water Supply
a. Surface water sources:
The City of Bozeman water system is sourced from two surface water intakes at Hyalite
Creek and Sourdough Creek.
b. Ground water sources:
The City of Bozeman water system is sourced from one groundwater source at Lyman
Creek Spring.
1.8 Proposed Treatment Processes
a. The City of Bozeman’s water supply obtained through groundwater production wells is
sourced from Lyman Creek Springs and is treated at a plant northeast of town. The
City’s surface water sources are treated at the water treatment plant on Sourdough
Canyon Road. The City provides an “Annual Drinking Water Quality Report” to the
public. The last report available is from 2020 and is attached.
1.9 Sewage System Available
a. The proposed development will be served by the City of Bozeman wastewater system
and is treated at the wastewater treatment facility.
1.10 Waste Disposal
a. The Sourdough Road water treatment plant’s flocculation sludge is pumped to the solids
handling processes. From here, water is filtered through membranes and Chlorine,
Sodium Hydroxide and fluoride are added. At the Lyman Creek Treatment Plant,
chlorine is added for disinfection and fluoride is added after storage but before
distribution. Sanitary sewage from the proposed development will be serviced by the
City’s existing sanitary sewer system.
1.11 Automation
a. The proposed water main extension does not include any automated equipment.
Maintenance requirements will be similar to existing maintenance requirements for the
existing water system. All fixtures and appurtenances will adhere to City of Bozeman
standards for ease of maintenance by city personnel.
1.12 Project Sites
a. Discussion of the various sites considered and advantages of the recommended ones:
The proposed water main extension alignment was chosen because it offers the
minimum length of pipe, loops all dead-end water main stubs, and provides the
development with a dependable and accessible water supply. The project site has been
zoned R-4 by the City of Bozeman.
b. The proximity of residences, industries and other establishments:
The proposed water main extension is located on Tract 1 remainder of COS 1256. A
public access and utility easement will be provided to allow the city to maintain the main
and perform repairs as necessary. The main extension is surrounded wholly by the
development and main extensions will run beneath the proposed road extensions of
North 25th Avenue and Turbulence Lane. Residential properties are located on all sides
of the proposed main extension.
c. Any potential sources of pollution that may influence the quality of the supply or interfere
with effective operation of the water works system, such as a sewage absorption
systems, septic tanks, privies, cesspools, sink holes, sanitary landfills, refuse and
garbage dumps, etc.:
There are no potential sources of pollution near the proposed main extension such as
drainfields, septic tanks, cesspools, landfills and refuse/garbage dumps. Wastewater
generated from the development will be conveyed to the City of Bozeman wastewater
treatment facility.
1.13 Financing
a. Financing for the proposed water main extension is provided wholly by the owner.
1.14 Future Extensions
a. There are no anticipated future connections or extensions within this area. The
approximately 1,460 lineal feet of 8-inch ductile iron main extension will be installed
within the subject property. There are no dead-ends within the proposed main extension.
The proposed development will be served through this main extension and will fully
buildout. Surrounding areas are already developed or currently under construction for
development and no future extensions will be needed.
CONCLUSION
The report provided above for the 8-inch ductile iron water main extension for the 2695
Tschache Lane Development Project in Bozeman, MT was prepared in accordance with
Circular DEQ-1 and City of Bozeman Standards. Construction of the main extension is
anticipated for construction beginning Fall of 2023. Construction will be in accordance with the
City of Bozeman Public Works Standards and MPWSS. The owner will retain professional
engineering services through Morrison-Maierle or other to provide certified as-built drawings
within 90 days after completion of construction and to certify installation is in accordance with
approved drawings and specifications.
www.bozeman.net 1
2020 Water Quality Report
January 1, 2020 - December 31, 2020
www.bozeman.net
The City of Bozeman is Pleased to Present our 2020 Water Quality Report
(also called the Consumer Confidence Report)
We are proud to report that Bozeman’s drinking water meets, or exceeds, all established federal and state water
quality standards. The City of Bozeman Water Treatment Plant had zero violations in 2020.
The report informs you about the quality of drinking water
and services delivered to residents each day. It contains a list of all detected contaminants found in Bozeman’s
drinking water and information on the water sources. If you have any questions regarding this brochure, please call the City of Bozeman Water Treatment Plant Assistant
Superintendent at 406-994-0501. This report is also available at the City of Bozeman website,
www.bozeman.net/waterquality.
If you are a landlord or property manager, or know someone who is not billed directly, please share this
report with your tenants and friends.
The City of Bozeman encourages all citizens to become
active in protecting our water sources and to participate
in the decisions affecting Bozeman’s drinking water.
The Bozeman City Commission meets Tuesday evenings at 6 p.m. at City Hall at 121 North Rouse Avenue.
Where Does Your Water Come From and How is it Treated? The City of Bozeman drinking water is collected from
two mountain ranges, and is treated in one of two water treatment plants. These facilities treat raw water supplied by Middle Creek, Middle Creek Reservoir (Hyalite
Reservoir), Sourdough Creek, and Lyman Creek. All Middle Creek and Sourdough Creek water is treated at the water
treatment plant located on Sourdough Canyon Road south of Bozeman. Lyman Creek water is treated at a plant northeast of town.
2 City of Bozeman - 2020 Water Quality Report www.bozeman.net 3
4 City of Bozeman - 2020 Water Quality Report www.bozeman.net 5
Sourdough Creek Treatment Process
Water from Bozeman Creek and Hyalite Creek are mixed together then enter the plant.
Distribution System
The treatment process starts with grit removal and addition of a flocculant. This combines with suspended particles to form “floc”. It is mixed at
progressively slower speeds.
The flocculated suspended particles and chemical settle out in the sedimentation
basin. Inclined plate settlers speed up the settling process. The sludge that is formed is pumped to the solids handling processes.
The water is then pumped through strainers to remove
particles and goes to the membranes.
The membranes have 6,350 fibers in each module and 124 modules in each rack. Each fiber has pores in them with a nominal pore size of
0.1 microns.
Chlorine is added for disinfection, sodium hydroxide is added for pH adjustment, and fluoride is added prior to going to the distribution system.
Middle Creek and Middle Creek ReservoirWater from Middle Creek flows into Middle Creek
Reservoir (Hyalite Reservoir) where it is stored. The water then flows down Hyalite Creek to the intake and is carried
by pipeline to the water treatment plant.
Sourdough Creek (Bozeman Creek)Creek water is drawn from the watershed in Sourdough
Canyon. No storage reservoir exists here since the breaching of Mystic Lake Dam in 1985. From the intake on Sourdough Creek, the water is carried by pipeline to
the water treatment plant where it is mixed with Middle Creek water.
Sourdough Canyon Water Treatment Plant
A 22 million gallon per day (MGD) microfiltration membrane plant with robust pretreatment treats water
from Sourdough and Middle Creek. This plant allows the City to meet increased service demands and comply with Environmental Protection Agency and Montana
Department of Environmental Quality regulations.
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The membrane filtration plant consists of grit removal, flocculation and sedimentation to remove larger
contaminants. The water then goes through 300 micron strainers to remove more contaminants. Membranes then
filter the water through 0.1 micron pores of the membrane fibers. As final steps in the treatment process, sodium hypochlorite is added for disinfection, sodium hydroxide
is added for pH adjustment and corrosion control, and fluoride is added for cavity prevention.
Raw water can vary during the year. It is affected by spring runoff, rainstorms, accidental spills, and landslides. The water treatment facility has the capacity to treat these
varying conditions, thus provides a very high quality of drinking water to Bozeman consistently.
Lyman Creek Treatment Process
Treated water is stored
for use.
Chlorine is added for disinfection.
Fluoride is added for cavity prevention.
Distribution system
Lyman Creek
Located in the southern foothills of the Bridger Mountains, this source is a fully enclosed spring and is classified as a groundwater source. The quality of this water varies little
throughout the year. The water is captured underground and flows to the treatment plant via a pipeline.
Lyman Creek Water Treatment Plant
The water is treated with sodium hypochlorite for disinfection, is stored in a 5 million gallon tank, and
fluoride is added as it leaves the tank for cavity prevention. (See Lyman Creek Treatment Process).
Source Water Assessment Bozeman’s watersheds are devoid of significant
potential sources of contamination. The exception is the transportation corridor along Hyalite Creek, which has a very high susceptibility to contamination by
transportation of chemicals, including vehicle fluids, on Hyalite Road.
The City of Bozeman’s Source Water Delineation and Assessment Report is available for viewing at the Bozeman Public Library.
The Sourdough (Bozeman) Creek and Middle (Hyalite) Creek watersheds are very highly recreated areas. Cross
country skiers, ice climbers, mountain bikers, hikers, dog walkers, fishermen, and rock climbers all use the watersheds on an almost daily basis.
What Are Water Contaminates? The sources of drinking water for tap water and bottled
water include rivers, lakes, streams, ponds, reservoirs, springs, and groundwater. As water travels over the surface of the land or through the ground, it dissolves
naturally occurring minerals and, in some cases, radioactive material. Water can also pick up substances
resulting from animal or human activity. Contaminants that may be present in water prior to treatment include:
- Microbial contaminants such as viruses and
bacteria that can come from sewage treatment plants, septic systems, agricultural operations,
wildlife, and domestic animals.
- Inorganic contaminants such as salts and metals, which can be naturally occurring or result from urban storm runoff, industrial or
domestic wastewater discharges, oil and gas production, mining, or farming.
- Pesticides and herbicides that may come from a variety of sources, such as agriculture, urban
storm water runoff, and residential uses.
- Organic chemical contaminants including synthetic and volatile organic compounds, which are by-products of industrial processes and petroleum production. These contaminants may also come from gas stations, urban storm
water runoff, and septic systems.
- Radioactive contaminants that can be naturally occurring or be the result of oil and gas production and mining activities.
6 City of Bozeman - 2020 Water Quality Report www.bozeman.net 7
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Bozeman Municipal Watershed ProjectThe Bozeman Municipal Watershed Project is a
cooperative effort between the Custer Gallatin National Forest and the City of Bozeman to maintain a high-quality, predictable water supply for Bozeman residents.
What is a watershed? A watershed describes an area of land that contains a network of streams and rivers that all drain into a single
body of water. In the Northern Gallatin Range that includes the mountains, valleys, and streams of Bozeman
Creek and Hyalite Creek. 80% of Bozeman’s drinking water comes from this watershed.
Where does our water come from? 100% of the City of Bozeman’s municipal water comes from our National Forest land—80% from Hyalite and
Bozeman Creeks and 20% from Lyman Creek in the Bridger Range.
The Northern end of the Gallatin Range not only provides the Bozeman community with its drinking water, it also is the most visited portion of the Custer Gallatin National
Forest. In peak summer months, thousands of people hike, bike, fish, and more in Hyalite and Bozeman Creek
each day.
What are threats to our watershed? According to three different watershed assessments, ash
and sediment from a severe wildland fire pose the most immediate threat to our municipal water supply.
The City of Bozeman water treatment plant has a peak
capacity of 22 million gallons per day. If a severe wildland fire impacts our drinking water infrastructure we will only
have about 2-3 days of treated water available for indoor use only.
How are we protecting our watershed?
We are using prescribed burning, thinning, and timber harvest to reduce wildland fuels which will reduce the risk of severe and extensive wildfire in the lower portions
of Hyalite and Bozeman creeks. This work will also help to decrease the amount of debris that could clog our
waterways and limit the amount of sediment and ash from entering our water treatment plant. While this project and work will not eliminate fire starts in our watershed,
the project will reduce fire severity near the municipal water intakes and treatment areas and protect our water
quality for Bozeman’s growing population.
Both the City of Bozeman and the Custer Gallatin National Forest will be in clear and constant communication with
the public before and during fuel reduction activities. Any temporary trail or road closures will be posted well in
advance and the work will be performed as expeditiously as possible. www.bznwatershed.com
8 City of Bozeman - 2020 Water Quality Report www.bozeman.net 9
2020 Test Results
Listed in the tables on the following pages are all the
contaminants detected in Bozeman’s drinking water after
treatment during the 2020 calendar year. The Environmental Protection Agency (EPA) and the State of Montana Department of Environmental Quality (DEQ) require monitoring of over 80 contaminants. There is also additional information frequently
requested in the Additional Water Quality Information Tables.
Definitions:
Action Level (AL): The concentration of a contaminant which, if exceeded, triggers treatment, or other requirements, which
a water system must follow. Ninety percent of samples must
be at, or below, this level. Lead and copper are measured at the 90th percentile.
Maximum Contaminant Level (MCL): The highest level of a contaminant allowed in drinking water. MCLs are set as close to the MCLGs as feasible, using the best available treatment
technology.
Maximum Contaminant Level Goal (MCLG): The level of
contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety.
Maximum Residual Disinfection Level (MRDL): The highest level of disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is
necessary for control of microbial contaminants (4.0 mg/l).
Maximum Residual Disinfectant Level Goal (MRDLG): The
level of a drinking water disinfectant below which there is
no known or expected risk to health. MRDLG’s do not reflect the benefits of the use of disinfectants to control microbial contamination (4.0 mg/l).
Nephelometric Turbidity Units (NTU): Level of turbidity in filtered water.
ppm: parts per million
ppb: parts per billion
pCi/L: Picocuries per liter (a measure of radioactivity).
Treatment Technique (TT): Required process intended to
reduce the level of contaminant in drinking water.
Running Annual Average (RRA): Average of the
results for the most recent four quarters.
Locational Running Annual Average (LRAA): Average of the results for a location for the most recent four quarters.
UCMR4: Unregulated Contaminant Monitoring Rule #4. Sampled at each WTP entry point to the system and in the distribution system Disinfection Byproduct (DBP)
sample sites.
2020 System Test Results
CONTAMINANT LOCATION MIN MAX
DETECTED LEVEL OR AVERAGE UNITS
Trihalomethanes (THMs)
DBP1 10.00 27.00 20.00 ppb
DBP4 15.00 32.00 25.00 ppb
Haloacetic Acids (HAA5s)
DBP1 9.90 18.00 14.48 ppb
DBP4 14.00 19.00 16.25 ppb
Lead* Distribution System Zero Sites exceeded A.L.
5.0 (90th percentile) ppb
Copper* Distribution System Zero Sites exceeded A.L.
0.067 (90th percentile) ppm
Total Coliform Distribution System 623 1 positive sample
MCL AL MCLG TYPICAL CONTAMINANT SOURCE
80 By-product of drinking water chlorination
60 By-product of drinking water chlorination
15 0 Erosion of natural deposits; corrosion of household plumbing systems
1.3 0 Erosion of natural deposits; corrosion of household plumbing systems
<5% of samples/mo 0 Naturally present in the environment
10 City of Bozeman - 2020 Water Quality Report www.bozeman.net 11
*Lead has not been detected in Bozeman’s source water. This sampling was done in August of 2018 in accordance with EPA regulations. Lead and Copper are regulated over the entire distribution system (not by source), so these results were not repeated for the Lyman source. If present, elevated levels of lead can cause serious health problems, especially for pregnant women and young children. Lead in drinking water is primarily from materials and components associated with service lines and home plumbing. The City of Bozeman is responsible for providing high-quality drinking water, but cannot control the variety of materials used in plumbing components. When your water has been sitting for several hours, you can minimize the potential for lead exposure by flushing your tap for 30 seconds to 2 minutes before using water for drinking or cooking. If you are concerned about lead in your water, you may wish to have your water tested. Information on lead in drinking water, testing methods, and steps you can take to minimize exposure is available from the Safe Drinking Water Hotline (1-800-426-4791) or at www.epa.gov/safewater/lead.
2020 Sourdough Test Results
LOCATION MIN MAX
DETECTED LEVEL OR AVERAGE UNITS
SOURDOUGH
Native Fluoride Plant Influent 0.00 0.20 0.07 ppm
1st Service Fluoride Distribution System 0.20 0.68 0.55 ppm
Turbidity ** Plant Effluent 0.013 0.034 0.018 NTU
Radium*** (Combined 226/228) Entry Point 502 0.6 (+/-1.0) pCi/L
Gross Alpha*** Entry Point 502 2.0 (+/-1.7) pCi/L
Uranium*** Entry Point 502 0.0004 mg/L
UCMR4
HAA5 DBP1 13.5 20.7 17.1 ppb
HAA6Br DBP1 0.86 1.21 1.04 ppb
HAA9 DBP1 14.36 21.91 18.14 ppb
HAA5 DBP4 15.1 23.0 19.05 ppb
HAA6Br DBP4 0.91 1.09 1.00 ppb
HAA9 DBP4 16.01 24.09 20.05 ppb
Manganese Entry Point 502 <0.40 0.64 0.32 ppb
MCL AL MCLG TYPICAL CONTAMINANT SOURCE
4 4 Erosion of natural deposits
4 4 Erosion of natural deposits; water additive which promotes strong teeth
TT= 1 NTU TT= 95% < 0.15 NTU Natural result of soil runoff
5 pCi/L 0 pCi/L Erosion of natural deposits
15 pCi/L 0 pCi/L Erosion of natural deposits
0.03 mg/L 0 pCi/L Erosion of natural deposits
60 By-product of drinking water chlorination
By-product of drinking water chlorination
By-product of drinking water chlorination
60 By-product of drinking water chlorination
By-product of drinking water chlorination
By-product of drinking water chlorination
50 Erosion of natural deposits
ADDITIONAL WATER QUALITY INFORMATION
Alkalinity Plant Effluent 60.80 100.00 86.28 ppm
Chloride Plant Effluent 0.40 2.56 0.93 ppm
Free Chlorine Plant Effluent 0.55 1.16 0.80 ppm
Calcium Hardness Plant Effluent 39.20 73.20 56.33 ppm
Calcium Plant Effluent 15.68 29.28 22.53 ppm
Magnesium Hardness Plant Effluent 18.00 36.40 27.47 ppm
Magnesium Plant Effluent 4.40 8.89 6.71 ppm
Total Hardness Plant Effluent 58.80 109.60 83.80 ppm
Total Hardness (Grains) Plant Effluent 3.43 6.40 4.89 Grains
pH Plant Effluent 8.01 8.81 8.52 SU
Sodium Plant Effluent 3.34 7.77 5.73 ppm
Sulfate Plant Effluent 1.00 4.00 2.42 ppm
Iron Plant Effluent 0.000 0.030 0.015 ppm
Total Dissolved Solids Plant Effluent 67.40 113.50 90.57 ppm
Dissolved Oxygen Plant Effluent 8.80 13.80 10.93 ppm
Aluminum Plant Effluent 0.000 0.013 0.002 ppm
Phosphorus Plant Effluent 0.017 0.300 0.149 ppm
UV254 (Organics) Plant Effluent 83.90 99.10 94.81 %T
NA
250
4 (MRDL)
NA
NA
NA
NA
NA
NA
6.5-9.3
20
500
0.3
500
NA
0.20
NA
**Turbidity has no health effects. However, turbidity can interfere with disinfection and provide a medium for microbial growth. The City of Bozeman’s filtered water must be less than, or equal to 0.15 NTU in at least 95% of monthly measurements, and it can never exceed 1 NTU. The single highest measurement was 0.034 NTU. Bozeman’s average daily turbidity was 0.018 NTU.
***last collected in 2018 per EPA regulations
12 City of Bozeman - 2020 Water Quality Report www.bozeman.net 13
2020 Lyman Creek Test Results
LOCATION MIN MAX
DETECTED LEVEL OR AVERAGE UNITS
LYMAN CREEK
Native Fluoride Plant Influent 0.09 0.30 0.18 ppm
Nitrate + Nitrite Entry Point 504 0.15 ppm
Fluoride Entry Point 504 0.28 0.76 0.54 ppm
Radium*** (Combined 226/228) Entry Point 504 0.7 (+/-1.1) pCi/L
Gross Alpha*** Entry Point 504 3.1 (+/-2.5) pCi/L
Uranium*** Entry Point 504 0.0007 mg/L
MCL AL MCLG TYPICAL CONTAMINANT SOURCE
4 ppm 4 ppm Erosion of natural deposits
Nitrate -10 ppm Nitrite - 1 ppm 10 ppm 1ppm Runoff from fertilizer use; leaching from septic tanks; sewage; erosion of natural deposits
4 ppm 4 ppm Erosion of natural deposits; water additive which promotes strong teeth
5 pCi/L 0 pCi/L Erosion of natural deposits
15 pCi/L 0 pCi/L Erosion of natural deposits
0.03 mg/L 0 pCi/L Erosion of natural deposits
ADDITIONAL WATER QUALITY INFORMATION
Alkalinity Plant Effluent 127.00 164.00 139.08 ppm
Chloride Plant Effluent 0.18 1.13 0.57 ppm
Free Chlorine Plant Effluent 0.47 0.63 0.54 ppm
Calcium Hardness Plant Effluent 98.00 122.00 104.50 ppm
Calcium Plant Effluent 39.20 48.80 41.80 ppm
Magnesium Hardness Plant Effluent 48.00 75.00 61.75 ppm
Magnesium Plant Effluent 11.72 18.31 15.08 ppm
Total Hardness Plant Effluent 158.00 178.00 166.25 ppm
Total Hardness (Grains) Plant Effluent 9.23 10.40 9.71 Grains
pH Plant Effluent 7.44 8.17 7.86 SU
Sodium Plant Effluent 0.90 3.12 1.41 ppm
Sulfate Plant Effluent 9.00 13.00 11.42 ppm
Iron Plant Effluent 0.00 0.02 0.01 ppm
Total Dissolved Solids Plant Effluent 141.00 154.70 149.20 ppm
Turbidity (in NTU) Plant Effluent 0.02 0.13 0.03 NTU
Dissolved Oxygen Plant Effluent 6.70 8.70 7.93 ppm
Aluminum Plant Effluent 0.000 0.004 0.001 ppm
Phosphorus Plant Effluent 0.040 0.190 0.099 ppm
UV254 (Organics) Plant Effluent 98.500 100.300 99.467 %T
NA
250
4 (MRDL) 4 ppm
NA
NA
NA
NA
NA
NA
6.5-9.3
20
500
0.3
500
<1.0
NA
0.20
NA
***last collected in 2018 per EPA regulations
14 City of Bozeman - 2020 Water Quality Report www.bozeman.net 15
BOZEMAN MT
Water Treatment Plant
Water and Your Health All drinking water, including bottled water, may reasonably
be expected to contain at least small amounts of some contaminants. The presence of contaminants
does not necessarily indicate that water poses a health risk. Some people may be more vulnerable to contaminants in drinking water than the public in general.
Immunocompromised persons, such as persons with cancer undergoing chemotherapy, persons who have
undergone organ transplants, people with HIV-AIDS or other immune system disorders, some elderly, and infants can be particularly at risk of infections from contaminants.
These people should seek advice about drinking water from their health care providers.
More information about contaminants and potential health effects, or to receive a copy of the EPA and the US Center for Disease Control guidelines on appropriate
means to lessen the risk of infection by Cryptosporidium and microbiological contaminants, can be obtained
by calling the Environmental Protection Agency’s Safe Drinking Water Hotline at 800-426-4791.
For More Information Jac Miller, Assistant Superintendent City of Bozeman – Public Works, Water Treatment Plant
406-994-0501 • jacmiller@bozeman.net www.bozeman.net
16 City of Bozeman - 2020 Water Quality Report www.bozeman.net
CITY OF BOZEMAN
Fire Flow Request Form
PHONE (406) 582-3200 FAX (406) 582-3201
The results of the fire flow information that you requested are as follows:
Tschache LN/North 27th
Hydrant #1996 Static 92psi – , Residual – 85psi Hydrant #1997 Pitot 76psi Flowing 1465 GPM
on a 2.5” nozzle. The test was performed on 7/20/2021.
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 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.
CITY OF BOZEMAN
Fire Flow Request Form
PHONE (406) 582-3200 FAX (406) 582-3201
The results of the fire flow information that you requested are as follows:
Tradewind Lane
Hydrant #1964 Static- 88psi , Residual- 84psi Hydrant #1955 Pitot- 76 psi Flowing 1465 GPM
on a 2.5” nozzle. The test was performed on 8/16/2022.
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 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.
From:Scott Mueller
To:Toby McClue
Cc:Wyatt E. Hatch
Subject:RE: 27th and Tschache (Fire hydrant)
Date:Friday, July 15, 2022 3:25:16 PM
Attachments:image004.pngimage005.png
image006.pngimage007.pngATT00001.txtATT00002.htm
***This message originated from an External Source.*** Please use proper judgment and caution when opening
attachments, clicking links, or responding to this email.
Toby,
The second new hydrant location is acceptable for Southern most building. Also, I am accepting of FDC locations as
proposed.
Questions for you:
1. Is the second new hydrant in Turbulence Lane Right-of-way acceptable for the FDC on the Southern
most building?
a. It gets us within 100 feet of the FDC.
b. Straight line with no obstructions between Hydrant and FDC as it is on a sidewalk.
c. Out of the 3 hydrant to FDC connections it would be the shortest at only 70 feet directly down a
sidewalk.
Thanks for further clarification.
Scott Mueller
Deputy Fire Chief-Prevention-Fire Marshal
Bozeman Fire Department
34 N Rouse Ave, Bozeman, MT 59715
Office (406) 582-2353 Mobile (406) 589-6271
“Excellence and Integrity”
Inspection scheduling:
Inspection Cutoff: The cutoff to request next business day inspections to 2:00 PM
Access the inspection form at: www.bozeman.net/inspections
From: Toby McClue <tmcclue@m-m.net>
Sent: Friday, July 15, 2022 3:04 PM
To: Scott Mueller <SMueller@BOZEMAN.NET>
Cc: Wyatt E. Hatch <whatch@m-m.net>
Subject: RE: 27th and Tschache (Fire hydrant)
CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize
the sender and know the content is safe.
Scott,
All comments look good to us. Just need to look at the FDC a bit more. I think we would barricade
Turbulence as shown below and not worry about the parking east of the Barricade until it was fully
connected to the project east of us, essentially limiting access to all Traffic until connection wasmade to the east.
The 100 unit apartment buildings are 4 stories so we will need to provide hydrants within the 100’ ofthe Fire Department Connection (FDC). All 3 buildings are designed exactly the same for
construction efficiencies and pricing. These FDC locations are located along the longest face of thebuildings and this works well for the two most northern buildings, but the southern building is closer
to the parking lot. Pink dots with 100 foot radius circles indicate location of FDC on buildings in thetwo images below.
The 100 unit apartment building farthest south has the FDC at 60 feet from the Right of Way ofTurbulence Lane. We could place a second new Fire Hydrant on the South side of Turbulence in
the Right of Way that would meet the 100-foot distance requirements. We can place the Hydrant soit is a straight path directly down the sidewalk from Turbulence to the FDC, which would eliminate
the need to snake around the parking lot and would provide direct access to the FDC.
Questions for you:
1. Is the second new hydrant in Turbulence Lane Right-of-way acceptable for the FDC on the Southern
most building?
a. It gets us within 100 feet of the FDC.
b. Straight line with no obstructions between Hydrant and FDC as it is on a sidewalk.c. Out of the 3 hydrant to FDC connections it would be the shortest at only 70 feet
directly down a sidewalk.
Two Apartment Buildings Adjacent to Turbulence Lane.
1. Northern buildings FDC is within 100 feet of proposed Fire hydrant at intersection of
Turbulence and 25th.2. Southern buildings FDC is located on west face of building and a new Fire Hydrant (FH)
could be placed in Turbulence Lane Right of Way to meet the 100 foot
Apartment Building at Tradewind and 25th Intersection. This FDC is within 100 feet of
existing hydrant.
Thanks
Toby
Toby McClue, PELand Development Engineer, Morrison-Maierle
+14065424816 direct | +14063608907 mobile
From: Scott Mueller <SMueller@BOZEMAN.NET>
Sent: Friday, July 15, 2022 11:20 AM
To: Toby McClue <tmcclue@m-m.net>
Cc: Wyatt E. Hatch <whatch@m-m.net>
Subject: RE: 27th and Tschache (Fire hydrant)
Toby,
So building height does matter. If highest floor level of story is more than 30 feet above lowest level of fire
department access or four or more stories, than standpipes are required and standpipes then require a fire
hydrant within 100 feet of standpipe/fire department connection.
So,
1. Would you like the additional fire hydrant and is the location acceptable?
Yes the one additional/proposed is located properly and acceptable. My only other concern are the 100 unit
buildings as proposed, I would require simply that the fire riser rooms/FDC’s should have access and
connection fronting N 25th Ave. This allows for enhanced/expedient emergency response operations, rather
than serpentine from an adjacent fire hydrant to an internal parking area access.
2. Can you provide some direction on whether or not we need Fire lanes and if so, where wouldyou like to see them as well as how much room you need?
3. Any requests on signage?
Please see attached marked up site plan.
4. At the south east quadrant of Turbulance and N. 25th we have an access road to the south
coming off of Turbulance. If we end up building our portion of Turbulance before the
neighbor to the East would it be acceptable to place Road Closed Signage at the point justbeyond our access to notify fire that there is not a turnaround. This keeps us from having to
disturb the wetland area for a temporary turnaround and keeps emergency services with aloop through the site.
The question I have is would the street parking be utilized for Turbulence beyond access to SE
buildings? Or East of that access to property line? I measure that dead end at about 170 feet, so Irequire the Road Closed barricade/signage at maximum 150 feet from access road to SE
buildings. Effectively blocking last 20ish feet of Turbulence to property line.
All that being said, minimally I would accept the road closure barricade at the SE access road. Effectively barricading 170ish feet of finished road.
Please contact me for further discussion if needed.
Scott Mueller
Deputy Fire Chief-Prevention-Fire Marshal
Bozeman Fire Department
34 N Rouse Ave, Bozeman, MT 59715
Office (406) 582-2353 Mobile (406) 589-6271
“Excellence and Integrity”
Inspection scheduling:
Inspection Cutoff: The cutoff to request next business day inspections to 2:00 PM
Access the inspection form at: www.bozeman.net/inspections
From: Toby McClue <tmcclue@m-m.net>
Sent: Thursday, July 14, 2022 11:49 AM
To: Scott Mueller <SMueller@BOZEMAN.NET>
Cc: Wyatt E. Hatch <whatch@m-m.net>
Subject: FW: 27th and Tschache (Fire hydrant)
CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you
recognize the sender and know the content is safe.
Scott,
Sounds like the apartment buildings are 3 stories.
Thanks
Toby
Toby McClue, PELand Development Engineer, Morrison-Maierle
+14065424816 direct | +14063608907 mobile
From: Wyatt E. Hatch <whatch@m-m.net>
Sent: Thursday, July 14, 2022 7:27 AM
To: Toby McClue <tmcclue@m-m.net>
Subject: RE: 27th and Tschache (Fire hydrant)
98 unit apartments and the townhomes are technically 3 stories, if that makes a difference.
Wyatt E. Hatch, PE
Land Development Engineer, Morrison-Maierle
+14065424835 direct | +14067813981 mobile
From: Toby McClue <tmcclue@m-m.net>
Sent: Wednesday, July 13, 2022 6:11 PM
To: Scott Mueller <SMueller@BOZEMAN.NET>
Cc: Wyatt E. Hatch <whatch@m-m.net>; Chris Fuchs <cfuchs@m-m.net>
Subject: 27th and Tschache (Fire hydrant)
Scott,
Attached please find the Fire Hydrant exhibit. This shows 500 foot radius around the existing
fire hydrants as well as our single proposed fire hydrant. We are showing a the single new
hydrant at the intersection of Turbulance Lane and North 25th, but we are completelycovered by the existing hydrants at a 500 foot radius.
The buildings are as follows:
1. There are (3) 100 unit apartment buildings, I believe they are 4 story. 3 Story.2. There are (11) 4 unit Town home buildings, 2 story.
3. There are (1) 2 unit Town home building, 2 story.4. There are (3) single family homes, single story.
Can you provide feedback on a few items as follows:
1. Would you like the additional fire hydrant and is the location acceptable?
2. Can you provide some direction on whether or not we need Fire lanes and if so,where would you like to see them as well as how much room you need?
3. Any requests on signage?
4. Athe south east quadrant of Turbulance and N. 25th we have an access road to thesouth coming off of Turbulance. If we end up building our portion of Turbulance
before the neighbor to the East would it be acceptable to place Road Closed Signageat the point just beyond our access to notify fire that there is not a turnaround. This
keeps us from having to disturb the wetland area for a temporary turnaround andkeeps emergency services with a loop through the site.
Feel free to just color on the sheet and scan back to me or give me a call and we can walk
through it all on a quick conference call. My direct line is 406-542-4816
Thanks
Toby Toby McClue, PELand Development Engineer, Morrison-Maierle
+14065424816 direct | +14063608907 mobile
1055 Mount Ave, Missoula, MT 59801
2695 Tschache Lane – Water and Sewer Main Extensions
Retainage of Professional Engineering Services
In accordance with ARM 17.38.101 (10), the Owner, Bozeman Property Owner LLC, will retain
Morrison-Maierle or another licensed engineer for professional engineering certification of the
water and sewer systems for the 2695 Tschache Lane Development Project. Project is located
on the remainder of Tract 1, COS 1256 less Minor Subdivision 404 in the NE 1/4 of Section 2,
Township 2 South, Range 5 East in Bozeman, Montana.
Bozeman Property Owner LLC Date