HomeMy WebLinkAbout10-27-11 Impact Fee Advisory Committee meeting materials g 4 CITY OF BOZEMAN
MEMORANDUM
DATE: October 17, 2011
TO: Impact Advisory Board - �
FROM: Anna Rosenberry, Finance Director"
SUBJECT: Continuation of Impact Fee Capital Improvement Plan (CIP) Schedules,
information requested during Impact Fee Advisory Committee meeting
on October 10, 2011.
As follow-up to our meeting on October 10, 2011, the following items have been accumulated.
FOR ALL CIP AREAS:
1. SCORING CRITERIA -A couple improvements have been prepared on the attached
Criteria Sheet, Version 2. These were provided by Planner Saunders and me. I haven't
received any other proposals to improve the criteria at this point. Committee members
can bring any other ideas for consideration to the meeting.
FOR WATER IMPACT FEE CIP:
2. Item WIF05 — Redundant Transmission Main. Attached are copies from the 2005 Water
Facility Plans discussing the Water Distribution system in general (Section 3.13), and
Redundant Transmission Main Loop (Section 5.13) in the Water Treatment Plant Area.
City Engineers will also be available at the meeting to discuss this item.
3. Item WIF01—Sourdough Creek Dam. Given where the City is with its Integrated Water
Resource Plan, the description of this item should probably be changed to "Water
Storage/Supply Infrastructure." At the time of this packet preparation, I don't have a
completed write up of this item. I'll be bringing it to our meeting for the Committee's
consideration on October 271"
City of Bozeman 121 N Rouse Avenue
Finance Department PO Box 1230
www.bozeman.net Bozeman, MT 59771
406.582.2300 (ph) 406.582.2344 (fax)
FOR STREET IMPACT FEE CIP:
4. Committee members requested to see copies of Story Mill Project elements from
previous Capital Improvement Plans. Attached are:
a. SIF10— Oak Street (Cedar to Main)
b. SIF11— Oak Street (Rouse to Cedar)
These projects were first included in the Fiscal Years (FY) 08-12 Street Impact Fee CIP.
For that plan, SIF10 was an "Unscheduled" item. SIF11 was scheduled to be designed in
FY09 & 10, and then constructed in FY11. The next year's CIP remained unchanged,
with design to being in FY09.
For the FY10-14 CIP, both items were moved to "Unscheduled," and they remained that
way in the FY11-15 CIP. By the fall of 2010, in developing the FY12-16 CIP, it was
decided to remove these items from the schedule for a number of reasons, including the
financial difficulties of the Story Mill development project. Attached are the FY11-15
CIP Descriptions for both of these items.
5. Urban Routes: There was discussion on the City's Urban Routes, as they relate to use of
Urban Funds. Attached is the City's current Urban Routes map.
6. Committee members requested information about the Level of Service at Intersections.
Information from the City Engineer is attached.
Attachments:
Version 2—Scoring Criteria
Excerpts from 2005 Water Facility Plans, Section 3.B
Excerpts from 2005 Water Facility Plans, Section 5.B
SIF10 Description
SIF11 Description
Urban Routes Map
Intersections- Level of Service materials
Proposed Criteria for Ranking Impact Fee Projects in the Capital Improvements Program.
Originally before the Impact Fee Advisory Board on October 10, 2011. Additional Suggested
improvements are in ((q„
Criteria Rating Notes This
Project's
Score
1. REQUIRED Yes/No Infrastructure, Capital, or Debt Payment on Infrastructure u
or Capital Purchase. (Cannot be used for operations or
maintenances costs.) '2C 1 0 '1002 e
2. REQUIRED Yes/No Useful Life of 10 Years or more. III ( ( j§Qj(j)(q), Ll
3. REQUIRED Yes/No Expands the Capacity of the System beyond its 1995 u
(inception of Impact Fee Program) levels.
urn Dui cceurneur is cui III';iiiiiii ciii urneur t urn�de ur ecesscui
111 i 0
Dew II)evelllo g],2,r�t sliiurice tlllhe liiurice jjoin of tlllie Ilfiin acct
.................................................................III................................................................................................................III.............................................................................III.....................
ce IIC: ui cr ui Horn !A CA 7...0...'1002 C °x...0...'1003 3
4. Benefits to Up to 20 20 — Project facilitates development of numerous city
pts properties, or potential city properties, in the immediate or
Deyelon,,,or+ near future (1-2 Years.)
POi „2,21 E,2,2, 10 — Project facilitates development of numerous
III(0
0eu s properties in 3-5 Years or immediate development of a
small area of property.
5— Project will likely facilitates development within 5-10
Years.
0 — Project will address development that has occurred
since 1995, but will not likely facilitate new development.
5. Direct Up to 10 10 — Direct Benefit to all system users, or Provides a "final
Benefits pts link" in a piece of existing system infrastructure.
5— Direct benefit to roughly half, or indirect benefit to all
system users.
2 — Direct benefit to small area of the system users or
indirect benefit to several areas of system users.
6. Funding Up to 10 10 —Certain. No other funding options are available
pts and/or All other required project funding is ready-to-
proceed.
5— Uncertain. Project is dependent on a mix of other
funding sources that are not ready-to-proceed.
0— Extremely Uncertain or Unlikely. Elements of Funding
are deemed very unworkable or unlikely.
7. Commission Up to 10 10 — Identified project in Adopted Commission Work Plan
Work Plan pts 5—Contributes to an indentified project in the Adopted
Commission Work Plan.
0 — Not identified in Adopted Commission Work Plan.
TOTAL Up to 50
pts.
Version 2 10/20/11
1."evalloatc Condition 1"C' Storacr(' se I I o 11 .3,B,
WATER DISTRIBUTION AND STORAG'E
11 istory
The original water systern for the City of Bozeman dates back to the late 1800�'s. CUrNntly,
there are water mains in service dating to 1889. 111 1900, the City of Bozeman purchased the
water system, fironi the l3ozenian Water Company, Through most of the 1,900's the water
distribution systern was a single zone gravity system, Ili the 1990's, the City started to
experience a large increase in population growth and expansion to the north (lower elevation
areas), which led to installing Pressure Reducing Valve (PRV) stations thereby creating
additional pressure zones. 'The City currently operates with three Pressure zones referred to as
the south, north and northwest zones (see Figure 3.B.1), 'The City continues to operate on a
gravity system.
The topography of Bozeman gradually slopes to the north. The Hyalite/'Sourdough Water
Treatment Plant in the SOUthern part of the systern has an, elevation of 5205 feet and the rilost
northern end of the distribution system has an elevation of 4625 feet, creating an elevation
change o,f 580 feet or approxiniately 250 psi of pressure differential (see Figure 3.B.2, large
forniat in Mal,) Suly)1emeta binder),
The water distribution system consists ofapproxiniately 200 infles of water mains ranging in size
froin 4 to 30 inches in diarlicter. The primary material for the mains is Ductile Iron, and Cast
Iron; the flornier is the City's standard specification f6r installation of new mains. Some conerete
and steel water nlains also exist in the system. Water service materials are priniarily copper,
although some lead and galvanized services are still present. The City utilizes radio rend meters
to track water Usage and bill customers.
One booster station is utilized, referred to as the Pear Street Booster. 'The Pear Street Booster
Station was constructed in 1 957,, It is used to pump water froiri the Lynian Creek reservoir to the
south zone, The booster station was iron-operational from 1986 to 2004. Upgrades were
completed in 2004 and the booster station was put back on-line.
Water storage consists of three structural reservoirs (Sourdough, Hilltop, and Lyinan) plus the
clear well at the Hyalite/Sourdough Water Treatment plant providing a total storage of 12,1 MG
The SOLlrdOLlgh tank was constructed in 1957, it, is a partially buried 4 MG concrete tank. The
Hilltop tank was constructed in 1985, it is arc above-ground 2 NIG steel tank, The Sourdough
and Hilltop tank work in tandem to supply water to the southern zone. 1-yrnan tank was
constructed in 1889, it is a partially buried 5.3 MG concrete tank. The Lynian reservoir was
offline from 1998 to 2004, After Upgrades to the reservoir and addition of chlorine disilifectiorl
it was put back on-line in June, 2004. 'The Lyman reservoir primarily provides service to the
north and northwest zones of the City and also provides service to the south zone through the
Pear Street Booster Station. A schematic diagram of the water system components is ShOWT1 ill
Figure 3.B.1 and a timeline showing the history of`the system is shown in Figure 3.B.3,
Se, tion
The ("'Ay rytanages the water system througfi vwvo depa•tynents. The Water Treati-nent Plant
Deparinient nianages treat.rnent and storage and the Watei and Sewver Departmemt n-ianages the
water distribution and sewer:' collectioji systern, I"he Water and SeNNrer Department ernPloys 20
fidt-finic staffand (nic seasonal employce, (')verall the City MaJutains wi (--,,xccllent rC'j1L1U11i013 fol
Providing, adequate flow, systems pressure, fire floNv, st(:)irage wid quality wvater to their custonlers,,
0ne lesturient to the City's high quality water systeni is the Insurance Service 0ffice (ISO )
rating tn 2000� the VS() rated the C"ity 38.70 out of'40 lx)rnts in the categoty of""water SLIPPIY"
A#A!j t f j',XistjRg_FaCifitjeS
Water Demand
`I"'his section provides as suni.mary, of" previous water (°,ojjsuj�nption and usage trends withrri thc
C lity of'Bozemari, Various sources ofusage data were acquired and analyzed for Ille Purpose of
this reporl, With regard to planning purposes, the infbmiatian obtained from historical usage
data will provide the foundatioii Rini which to base future water usage projections. The fikAs
and fi gures provided in [[us section will provide insight into l3ozerrian's, water usage patterrus for
the past live years (2000-2004), 'J"he follow irig topics will be covered throughout the course of
this secfion!
* Population
* Water Supply
* Metered Custotnertfsage
* Unaccounted-Tor Watca,r
* Water Use E)istribution
Population
'I'lie Clity of Bozeman poptilation estiniates used througl
iout this report are WLsed on building
pernut data, average dwelling occupancy and an assurned vacancy rate. Art eXceptioll is the
estintale fbi- 2000, which is based on LVS. Census Bureau data,, Bozemwi's population has been
steadily growing over the past fiVe yew-s. The population percentage increase betweeqn Years has
also progressively increased. Population estitnates as well as the percent increase firn, each year
ir-). the five-year span (20�00-2004) is lisled t)elow in 'J.'able 3AT,
I,able, 1B.I. Cut P of Bem
.......... oz an-- — I -.J?
Year 2000 2001 2002 2003 2004
27,509 28,282 29,126 30,225 31 56
, ,4
.............. ...... ...... ......
Pe,rcent haease 2,81 98 3,77 443
...........
Water Supply
Water i.,isage trends can be sununalized using daily systern data available at the existing l3ozernan
Water 'Trealiuernt Facility, The %),atej, fteatment plant keeps records of effluent flow exiting the
facility on as daily basis, E.Mily effluent flow is equal to the amount of daily plant influent minus
5
(`,(,)),Idi6(,)n ("V I,,"Ne"'ififie's L)i,�Iribtltk�n (V 'S"lorqg"c' Sed lio n 3 B
the backwash water used f6r, filtration in the treatnient process. Daily effluent A.)ws fi-om tile
plant were organized by iii.onth in, order to COITC.Iatc wigi, iriontlily areter (hai discussed later on
in this report, �ity of l3ozeirian, rri,eter readings, are taken around the tenth day of each inorith,
Theref6re. �xatcr treatment plant data, was cojiipiled by grouping daily effluent or tire eleven'th of each mouth and ending on the Wirth of the proce6fing nionfli, F example, data
categorized under tire month of' Mareb is a,ctmilly the sum of effluent values ftolil the plant
starthig on March I I mid ending on Aj)riI 10, Figure 3.B.4 summarizes the arnourit of waier
leaving tier. water treatment phun OD as monthly basis for (he years 2(l00 thrOugh 2004.,
Figure 3.11 .4. Water 71'reatmen't plant Effluent Flows
WTP Data
'150,000,0010
300,000,000
2000
250,000,000
2001
200,000,009) LI 20CY2
due 15C,000,000 200'3
004
,91[
50,1000 2 000
A
x tl 0
K�
month
The data Presented in Figure 3.B.4 illustrates a cansistent seasomil fluctuation in usage due to
increased demand in the surniiier wiionths, The figure also shows, that Lisage has remajiled Ilan ly
constant witb a slight increase over the five-year period flor� the trumths; ofJanuary through April
as well as October thro-Ligh December. Variations occur for the montlis of May, through
SeplemIx".,I Nviiere deniands rise wand fall fl om year to year. 'I"he oscilhafi()Tls Observed during flic
sumnier months are umst likely due to changing irrig'tfion, zind Avatering needs as weather
patterns vary over liine,
Water Use Estirnates
Watcr use requirern e tits can be estim.ated by taking as furthor Wk at the water treatnient plant
effluent data, Due to the seasonal fluctuations in dernatid, estimates are calculated for the, year as
as whole, as well as or sur•uner and Nvinter separately, Sinniner and winter perfods are dictat(xi
by the amount of water released from the flyalife, Reservoir Darri. Itie Nvater, released faom
flyalite Reservoir indicates kvhen irrigation p(,,,riods ocetir. Sunirrier periods are classified as the
dates when flow released from,, 11yalitc, Y)arn is ten acre fee( or higher (per Dean Elliott, W P
6
h"value ac,, e�wf) 3 B
Superintendent), Winter periods include fire rernainder of the year. Winter flow dat'a is
indic,aive: of true dornestic use, as it is not influenced by inigation usage (r e. weather patterns).
However, ffor average gpc(.1 usage, the total yearly flow divided by population should be used,,
FhiS VaIIUC, Will a11SO iiCCOUot tbr the transient population in Bozeinan. Effluent flows observed
and recorded at thc Bozeman Water 1"reatment Plant from 2000-2004, are slioNs/ri. in Appendix
1 .1. A surnmary of average watertreziftnent plant eflluent now trends over tile five-year penod
(2000-A)04) is shown below in Table 3.B.1,
Table .3.13.2. Aj tet" Treatinent Plant T'rends (2 0-,2004
-for Summel...............
C n 1,769,028,355 1,017 5,,293,949 693,794,406
4,846,6'63 „984,276 7,269,689
101628,3019 7,747,878 m 10,268,,309
_MaxD Factor 2.120
a 1 �45
.!!q
165 136 248
Av2,0 gN C
W
_ PA
Over-all trends apparent from the water supply dat,,a are surnmarized. below in Figure 3.B.5.
Average daily effluent, flow 1rorn the water treatment plant is shown ;raphically over the five-,
yeat- periold f6r eaeb year as well as 6or the winter and surnmer seasons. It may be observed tliat
there is as lairly consistent gap, between sununer and winter usage. Average winter usages are
approxirnately 551% ofaveralge suinmer usages. [Ti, addition, by exclusively isolating the winter
and sumn'rer months, (lie winter season water supply data can be used to analyze growth
projections as well as summarize year-to-year trends.
The total average day winter effluent ftoni the W'FP has beTn increasing at ail average rate of 2..
percem annually over the five-year period frame 2000 firrotigh 2004 (Table 3.B.3), Ii orilpared to
an average population &7,owth of 3,5 percent annually over the same period, water usage per
cailiita appears to lie decreasi,t,ig,, Data on winter use per capita (Table 113.4) fiirtber Supports this
trend, wl.-nelt shows, a 0.9 percent, average annual decrease of per capita winter use over the five-
year period or a total, decrease: of* .g percent. Fhis downward trend in consurtiption appears to
be on track with pr(,,)jections stated in the City (# Bozenuui Hlater Conserwaion, Sfuc�y, NIM-ch
20,02 by Aquacraft, Inc. Wherein as reduction in demand of 17 percent over a 20-year period was
pr(jected if all recornmended conservation scenarios were iniplenit.,,nted, ASSUnling the curlent
conservation trend continues, the winter per caj.,)ita usage in year 2025 would he approximately
109A glxd.
h vuhl(,�ae ( ondition ofExis 11,17g, [1,41c daft eS-1)[Striblition (:t Sicclion � 1?
Figure 3.13.5. Average Day Usage Trends Based on WTP Effluent(2000-2004)
WTP frends -Average Daily Use
49,0("K),000 ......
8,000,000
7,000,000
6,000,000
1---+--Yeair
5,00�0,000
0. wil"Iter
*C 4,00(),000
3,UUU,U(XJ
2,000,000
1,000,00o
20,00 2001 2002 2003 2004
Year
Table 3.B.3. Avera,e Da r Use WIT Effloe� I, Winter S on 20�00-20014)
JL
Year-Winter Season 2000 20011 2002 2003 2004
Aver ge Day ,e 3,78 1,20 6 3,8�79,763 3,979,068 4,104333 4,177,009
k Us f
7-7
Percent Increase % -611 315 1,77
--j
""Fable 3.13.4,4.jDa Use Per Ca ita WTP uent,, Winter Season -2004)
Year ... . ...............
Season AWer Season 2000 2001 2002 2003 2004
Day Use Pair Crape to
g P, 137�5 1372 136,6 135.8 132.3
ipcd)
Percont lincreas C�)
Refer to the figures arid tables presented in Appendix B.1 fior a more descriptive presentation of
data <rs wel I as an explanation of terms,
Nlclere,d Custim,iaer [Js age
C'usloine,r tueters and billing records are an additional data source than can be ofilized in order to
determine average usage rales,, The piatterni; and (rends obseTvied horn metered re(.,�,ords should be
similrrr to the tremis monitorcid at the water treatinent plarit. Water usage records based on metell
readirigs were ol,)tained for the, vie Barr period (2000-2004) in total cubic 1'�el used per month,
As 1)reviot,,tsly inentioned, the City of' Bozernan records meter data atound flic tenth day of each
T'nonth", Th erefore, flie nieter data Nvas sh-Ifted in order to account for this practice, For example,
the metered consun,q)tion recorded fim- the mondi art".lure per City meter records is actmally the
1
inetcred con su.niption fi-0111 the eleverah of May toy the tenth of June, Since the rnaJority of
cmisuniption OCCUITOd during the nitorith of May, the raw June data from hine, first to June tenth
has been labcled as the rnetered consunilption, occurring in May and so fodli for ea,ch month of
the yeai. A complele ma onthl.y breakdown and analysis of Bozeman"s uwtered consuinption
usage for (he past t i ve-Years can be found in Ap�pendix B.I
kletemd usage data is often. less accurale and more sporadic due to as variety of factors that nuay
occur throughout the distribution systein suct'i as leakage or tilain breaks. In addition,
inaccuracies in meter readings nmy also contribute to the irregular nature of the meter t�isage data,
A briefstumnary ()f`aVrC[.a „mm day metered usage is shown below in Figure 3.B.6 for the five-year
period (2000-2004), The graPh shows a steady increasc in use with the exception o f 20,02 and
2004.
Figure 3.B.6. Average Day usage Trend Based on Metered Usage (2000-2004),
Metered Usage -Avg.Day Use
4,500,000
'I't..... ..
......
4,400,000
4,300,000
4,200,000
Av g Day
4,100,000
Q 4,00(),000
3,800,000
3,700,000
21000 2001 2002 2003 2004
Year
A conilflete breakdown and analYsis 0:13(menran's rrietered constiniption usage tim, the pasi five-
yk.,,ars m:an be found in Appendix B.1, A SUT11MEO''V ofaverage metered consumption trends over
the five-year- period (2000�2(04) is shown below in Table 3.8,51, Please rmtc, that as Icss
ex�ensive analy�sis Was mnade f6i, the metered dala than the water treaftnen1plant 4Jala, Meter
data \vas available by ;,,nonth whereas water ireatryient efffiiem was available on as daily basis.
-11,Tierefi)re, nieter data was analyzed entirely on as yearly basis without as sleasonal breakdown
analysis,
9
..................
f r'ej'hane ( �'Pnefifion ol'I'll'XIsting I'VitrAlfion, ct. sle`)M�g(" Sechon .?,h"
Table 3.B.5.. L/c Tans r fimill'ren(ls, (20
v f r Yearly
1,543,127,290
a xf 4,227,746
kw ff—USEIL.? 144
I Jnaccounkt 'd Use
(,iiven that data exists for the Clity, of Bozeman's water treatment supply as well as for customer
tisage billings records, as direct, comparison rnay be made betweeii the two sources in order to
deterni'lne the arriount of anaccomited use occurring in the Bozeman water systern. Unaccounted
tise is the diffi.,rence between the an,.murfl, of fat er being supplied from the water treatment plant
arid th li t water that, is metered, Ideally, if all (lie water coming from the water
treatment plant is nietered., effluent should always equal metered Usage, However, there are
mmiy reasons why water is lost, or unaccounted-for, The niam reasions include leakage and
inaccUracres in meter readirigs. Other, events such as main breaks, fires, or illegal connections
ri'my also contrNite t;ca unaccoun(ed use,
Figure 3.R.7 illustrates the amOUnt ofunaccounled use by each year in the five-year sirmn (20010-
2004),, The difference betweem the waler treatmeni effluent and the inctered usage represents
tMaCCOU11ted use,
Figure 3.B.7 Unaccounted Use
(Inaccc)unted Use
2,500,0001,000
2,000,000,00(ji
1,500,C@0,(,)00
WTP
Kk-,tw ed
1,0c)(R,Owj000
0
2000 2001 2002 2003 2004
Year
Fhe results indicate thu the aniourit of' unaccounted Me SWyS relatively const'am from year to
Tfie dala shown bellow in Table 3.R.6 fiats thc iercentage ofunaccot,uited tme on ia yearly
,y ez i
10
h,velluale Comlition ol"Lki ltnlg & Slcwagc "),ce-lion 3 B
basis as well as the Unaccounted Use it) gallons per capita day. A monthly breakdown of
unaccounted use can be ftnind in Appendix 13.1,
Table 3.B.,6. Unaccounted Use
Year %Unaccounted Unaccounted(gpcd)
2G01D 11.4 19
2001 11A '19
2002 143 24
2003 '14,9 26
20,04 11.6 18
Average 123 211
Table 3.1.3.6 indicates that the amount of unaccounted Use has slightly increased over the fbt,11--
year period (20001-2003) and decreased over the last one-year period (2003-20014). The average
unaccounted water (12,7 percent) corresponds closely with AqUacraf-I's analysis in Ciry (,?f
Bozeinatz Water Conservivion S'ludY, March 2002, which was estimated at 12 percent.
The Forth Edition of the: Mc(`iraw-Hill Series in Water Resources and Environmental
Engineering states that, "the loss and waste category is often estintated at about 20 gpcd, but with
proper construction and careful niaintenance it can be reduced to less than 5 gpcd," In addition,
the Water Distribution Systents Handbook (' 000) by Larry W. Mays states "A coninionly
accepted rule-0f`-thLjnib for acceptable ICVelS Of' Unaccounted-for water is 15 percent, although
this value is highly site specific." Based on the data presented in Table 3.11 .6, the levels of
unacCOUnted Use encountered over the past five years, for the City of l3ozeman water systern have
been within or close to reasonable levels accordittg to the two sources listed above,
Leakage,, meter inaccuracies, and meter inaccuracy at the water treatment plant are the main
sources for unaccounted use. The Water Distributions ysterns Handbook by Larry W. Mays
provides various methods and indicators flor determining the cause of'unaccounted4br usage.
For example, the following analysis was made for the year 2003. Metered usage values sorted
by r-nonth were obtained flor every address within the City of Bozeman water distribution systeni
The addresses were then classified as residential, commercial, or those pertaining to Montana
State University using an aerial photo of' Bozeinan, The photo indicating the appropriate water
usage zones can be ft:)und in Figure 3.13.8, Yeflovv, areas are classifted as residential, magenta
areas as conintercial, and blue pertain to the Montana State LJniversity, campus,, The moruhly,
meter data front 21003 was then sorted by address into it's appropriate water usage zone, A
summary of"tine soiled 2003 water meter data car, be f'ound in Appendix BA, The data in the
Appendix shows two additional Nvater usage categories labeled "Top Fight Users" and "City
fri-Igation." "I"hese categories are part of the conitnericial zone but have been labeled as such in
order to illustrate a more complete breakdown of the data for use in the next section of" this
report.
ol of E)iSling /'c r"ilit ie� y-1)i,i rib ti t ion (,i`( Sle�,nwgv Se,�Tfion 3,13
According,, to Mays (page 17A), the ft)[IoNving equation car be used to estimate [fie amouril of
non-indusirial use in aa,distribution system
Non-industrial use, Coranic-rcial and industriaLLisej
(Population served)
"'ThiP,i qu,antity ehinimates the efh-,�ct (,Wf industrial usage on water, demand and should reflect use
by domestic customers, If this value is grealer than about 70 gpod in the ri on-Irrigat i oil season,
excessive leakage is likely,"
20)'; metered data as well as 2003 water treatment plant data was used to illustrate this analysis.
The production temi in. the equation shown above refers to the amount of water produced gat the
watet, treatment Plant for 200'3,, These values are shown below in 'Fable 3.11 .7. The comni'lercial
and industrial use terin reters, to the SUITI ot' llic meter data fOT the COlTuTrercial, MSU, top eiglit
users, and city irrigation categories ftOlP Appendix. B.1. Population served refers to the C,ity of'
Bozenian population for 2003, The f'ollowing results were obtAined and are presented in 'Fable
3.1 .7 for the iron-industrial use analySiS Utilizing the equation showr). above,
Table 3.13.7. Non--industrial Production (2003)
03 Po Watt =30,225
Month WTP(Gallons) Commercial(Gallons) Non-IndUstrial Use(91ped)
December(2002� 10 7,,7'11 1 136 41,223,408 71
January 114,365,,191 47,420,424 71
February 110,252,090 44,175,241 78
March 121,488,563 44,037,571 83
AprN 119,894,048 52,504,168 '74
May 140,851,770 61,524,26,3 85
June 202,812,523 67,408,,420 149
'hily 302,449,417 108,206,464 207
August NZ368,859 85,320,746 189
Sep*mber 176,883,713 62,154,406 127
October 131,844,937 WW2,936 80
November 'It 3,733,1910 43,114,471 72
ttip nrrlqatk)n spason(Le.when flows from HyaRte Dam are ten-acre fRet/day car higher). The Ir-HpOon pedod
fmi 2003 is July I -Od, 14
The non-industrial use yalues resmbing For thc 41ori-irrigati()Irl SJ'aS( 11 af.e 'I
I ) 'I in the vicinity, a;)470
gped. Based or) the analysis described by Mays, it can be concluded that exicessive leakage is not
the major cause, for, utmecounted use ill the Bozeman water distribution systeni because n ore-
fiadustrial ease values ill the non-irt-igation season are not substantially higher than 70 gpcd, The
nionths of.lune and October are likely illustrating ali overlap of the irrigation season to tire lion-
irrigah011 sea,sorIl
A shniia•analysis rising residential tri.eter readings may be rtuade with the fWfowing equation also
outlined. by Mays (page 17.x;1,
13
b"vtduult, ("onditio'n 1"'XI Yling, /I 6�t d" Storilgf,,�' Sa,",cfion 3,1?
Domestic Use Metered ("OlLsItTlIPIM),
(Populatio,n Served)
"If this paranw-ter is, less thari 70 gpcd, undet registration by donrestic nieters is a likely
contributor, tO Unaccoutiled use."
Onc.e mot.e, nwler data froin 2003 was used for this analysis and is presented belovv iri Table
,3.1!1.8, 'The donieslic arellered consu.niption term re('ers to the sum of all residential meter
readings pertaining to each month, Population served refers to the City (Al3ozemati population
for 2003, Again, the Photo found in Figure 3.8.8 was used to designate residemial addresses
atid as sums ary ofthe 2003-nietered consumption breakdown is listed in Appendix R.I.
Table 3.B.8. Domestic Use (2003)
003 Po ulation, -_J0,225
Mooth, Residentlai Domestic Use(gpc:d)
Deceniben(2002) 44,342,674 47
Jar Mary
46,621 A21 50
F`ebruary 43,671,0018 52,
March 43,709,283 47
Atwil 46,943,051 52
May 7,770,8a`r3 72
June' 101,969,492 112
J Uly 196,936,W3 209
Augiust 13,8,176,796 147
September 83,360A 19 92
October 59,537,097 64
November 44 0 1 t 150 49
Shaded c^-111s,4iftate the Vrigabon seasrm(f e,when flows frorn Hyalite Dw are len--acry feeUday ci� higher) The irrigahon period
for 2003 is Juiyl -0d, 14,
The doinestic use parajrjjc°ter is co�nsistently 1r:.,rwer than 70 glied fi-n, the non,.-irripit i on season,
Again, the nv)n.ths of'June, aand Octot)er are likely i1l11StT`.11it1g ,)T1 overlap of the irrigation season
lo t,he no)ii-,ir7,ipa1:i1on season, Based on the aanalysis crutlined by Mays, it can T)e concluided that
the nia'jority, of" taia,ccounted Usage is rnost fil<cly due to inaccura(c meter i ea(fings (ILIC, 10 d-le
doinestic use values being constandy tinder, '70 gped. Please note that this analysis was made
using data firom one year- onlY (2003), In order to deterinitie the exact cause for unaccounted
water usage, it is recommended tti,,at a more extensive study be conducted, 'T"'he ,,tt'jalysis
presiented above is intended to illustrate ane general ide,a of' thc mosi probabk,, Cause I'm,
111MCCOL11ited water usage in the Biozenian water systern,
14'
11,'n"Ihm,tc, owdinon o 'L-�islillg 1�'�,Icilcs PislTibwl�wj S
1/ 3,,H
Water Use, I)istrilnitiori
Water tises niaY be divided into a varicty ofeategories, As briefly nientioned above, data was
obtaiiied fim, the year 2003 for every metered address pertaining to the (:"ity of Bozerilan water
systerri. Usage numbers were acquired in the form of'cijbic feet used at erach address ft.)r ever y
nionth in 2003 Elach address wa,,.; separated into one of fiollowing categorim�
Residential
Clorninercial
M,ontana State University
TOP [,�Iight I-Ners
City Irrigation
The category ol"'Top Eight. Users" was determined by listing the top ten users for each nionth
atild isolatirig the as that consistently appeared in the top ten. The top tClu Users varied
month to month, while the top eight of those renrained consistent, A compan I son was made
be-,tween each nionth and the users that consistently appeared in the teal) ei
,!,lit were isolated ftorn
the rest ofthe addresses. Tlre top eight risers, are listed below in no particular order,:
* I)arigold Farins -- 1,001, N, 7"' Ave,
# Holiday hiti Hotel - 5 Baxter Lane
0 Bozenian Deaconess, Hospital - 9 15 Highland Blvd.
0 Medical its Center- 3001 Wilson Ave.
e Covered Wagon Mobile I lorne Park - 1000 N, 17'b Ave,
Wagon Wheel Mobile: I lorne Park 2219 W. oflege SL
Best Western Grantree: I lotel 1325 N. 7`" Ave.
Ciallatin Lafflld.17Y CV 137 E. Babcock SI,,
The category entitled city irrigation contains all addresses tmsed I'm public irrigation tNse,, These
addi-esses I'm lain mostlY to city park irrigation and contributing features, but also include
in,igal,ion Im boulevards and cenicteries. In addition, water sold at the city shop fill station was
also included iti this category, Addresses fisted marler the ilTigation category arc provided ira
Appendix BA. Once each address was classified into its appropriate category, the 2003 metered
usage data was, organized by month irito tl.,re 1`6flowing representations provided iri Figures 3,B,,9
ILI'lld IBA(), N Tiara descril,)Ove hrc,,akdown is prc),%4ded below in 'rable 3,.,B.9,
15
.............
Figure 3.B.9. 2003 Water Use Distribution
2003 Usage Summary
360,000,000
300,000,0100
1p,UnwCOUnted
250,0()0,000
Ksu
200,000,OCK) b"rigationi
0 150,000,000
100j),00,000, 0 Ulrvv'ToirdiN
50,000,000, g Reskienfial
o, o "')CK
'Nof, 10 Aej
Month
Note (02) is shown duc to the Orift in months resulting fi-om the meter readings occurring on
the tenih ofeach inonih
* RdL�,T Ito Appendix ft.'f J'or rip inonthly-unaccotiwed use arl'alysis, Son'le montlis have nega6ve Values fbr
unaccoiuntcd use resulfing ftom the nuctuation in,dates of'when meters are mad. This accounts for the, lack
fr unaccolinHed use in the July 2003 column of" igwe 3B,9,
16
11)YJhhI��. :'orldm°tmon, O.V' `xi'sImmtg � aar���m�mm�,u����tr`,���m°r��mm,m�r`on ���% MGM"����°°�����: '�("C lio la Z?
Figure 3.B.10. 2003 Water Use Distribution
2003 Usage murtmurmary
I tK)
9
810 is ttna("c„r um,meet
El tt
Purtmtpc lrrtaamtom Jt
watt
[3 P8 Users
120
sl r'udta l
10 Y
0
IS
ecse, , sees
Month
”
Note December (02) is swoon unarm; to ffic shift 41 rm�rmmnths rttsumlNmumg t"r°mwmn the mm etc°m ue°amalutugs oc utm`u`big on
time tenth mrml'`eaeb mamammmtl.
m Refi^m to Appendix BA f( m, ;m mm�r()rrtlmNy-u:mmvaa.°m°ounted umsm analysis. Solvic rmr()b'Ahs have negative vaNms for
muuraccmo unted use resulting from the fluctuation in dlates of 'Yen meters rm.re mead This,,,accounts ti.mr the lack.
a mfammums.°eount d use in the Jiuiy 2003 column a ffi uare 3,1'3.10.
hvwllwm! ( ondai(')n ot 11'.k'1"w of 41c7flues 4)istvibn'rion &" S1o7'0'� 3.B
"Fable 3SA, 2003 Water Use Distribution
2003 Population 3�0,22'5
WTP Residentiall Commercial Top 8 Irrigation MISU Unaccounted
Month (Gallons) .................
%of %of %of %,of %of %of
Gallons Total Gallons Total Gallons Total I Gallons Total Gallons Total Gallons Total
............... I'll - ___.__ j '5
............
(02) 1107,711,1315 44,3,42',674 41.2 23,977,X77 223 '1,168,121 6 7 216,78 0,2 91861,325 9.2 22,145,053 206
Januwy 11 4,365,1 91 46,621,621 40,8 23,500,283 205 7,364,322 6.4 267,835, 02 i 16,,287,984 14..2 20,323,146 178
Februavy 110,252,090 43,671,008 39,6 22,455,790 2014 6,941,702 63 210,277 02 14,537,472 1 132 22,405,842 20,3
i March 121,488,563 43,7091,263 360 22,904,912 118,9 6,694,263 55 191,315 02 14;247,061 11,7 33,74 1,709 27.8
7;)611 111,11,1141 46,943,051 39,2 25,428,484 212 9,542,311 &0 526,793 0�,4 17,006,580 14,2 20,446,828 17
May 140,5'5'1,770 67,770,879 481 32,818,747 ;233 12.002,782 65 1,062„997 0.6 15,6419,738 11 1 111,5 56,6 28 8.2
June 202,812,523 101,969,,492 503 33,940,635 16.7 10,275,725 5,1 2,720,826 1.3 20,471,2M34 101 33,434,611 165
JUIY 302,449,4 17 1 1915,936,663 1, 64.6' 58,015,448 19,2 21,279,254 TO 5,727,,674 1 9 23,184,088 7,7 -1,693,`710 -0.6
August 262,368,859 1 136,175,796 52'1 46,343,402 1.7.'7 14,543,177 55 4,738,781 1,8 19,,695,3 86 1 7-1a 38,872,317 148
Se1at,ernher 171«,643.3„7'13 33,360 19 4.'l.1 32,,301,520 18,3 9,259,006 52 2,799, 2 1 6 117,794,591 10.1 31,369,185
()rJober 131,844,937 59,537,097 45,2 27',859,739 2.1.'1 9,454,054 11 512,132 4;64 l8,731,01'1 14,2 1,5,744,90 11.9
November 13,733,910 44,01!6�150 3�8.7 20,240,730 17,8 10,153,277 8.9 224,002 0.2 '17,4W5,461 i 5A 21,603,2901 190
Tot 1,904,656,157 916,05,3,833 48.1 369,786,868 19.4 124,677,994 6�5 19,198,,708 1.0 204,988,951 10.8 269,94,9,803 14.2
Gaillons Pei
173 83 48A 34
19,4 it 6 5 2 1 0 19 10.8 24 141
............
158,721,346 76,337,819 45,3 30,815,572 19.8 10,3,89,833
— 6m 7 1:599,892 O,8 17,082,413 '11�S 22,495,81,7 15,91
............
Average
Summer Mont W 2-16366,732 119,252,419 52.4 4,1,130,027 1 9A 13,633,873 61 3 444 470 9,9 21,073,174 1,1,0
19,652,769
Average hater
aaualf 128,888,654 54,880,520 �7 5,658,345 20,11 BJ67,813 6,1 C777,604 0A 15,697,234
...........- 1 2A...............ill�� �LELLJ
Sumrnie�rnor'Iths reft.'I'S tO Ady-Odir)bem,(I e.when flows frorn Hyalfite Creek are 10 acre-felef/day or Ngher;
For 20,03 d�alps are hfly 1 -Oct, 14)
WhUer months refer to,January-June and Novernber- Decernber,
1",1 alue I I c, om lit io I I f""f EXIIS"trub; J,41,1��ihl I I b(siri h It I ion A', Moraoe
Residential use accOUnts fiver the largest aniount of usage ii') the Bozeillan water system at 48%ol of
the total production ror 2003. (.1'rinimercial use accounts for 19% of the use, Montana State
(Ji'dversity, accounts for 1101/0, the top eight users account tbr 6.5'%, public irrigation use accounts
for I'MO, and unaccounted use accounts for 14%. The distribUti011 shills slightly when the Usages
are divided on the basis of seasonal use as shown above in Table 3.B.9,
Suininai-y of Water Deniand
Population growth over the five-year period 20001 through 2004 averaged 15 percent annual
growth, whereas water usage average growth was, 2,.5 percent annually. The drop in overall Per
Capita water usage appears to be primarily related to water conservation ineasures. "I"lie average
yearly per capita water usage fioi the five-year period is 165A gTc& The highest per capita usage
occurred in 20103 at 1723 gpcd. Considering the five year data results, City of Bozenian Water
Conservation Study and an apparent, trend towards water conservation,, as per capita water usage
of 170 gped is recornriiendeld as a reasonable, conservative derriand For future planning purposes.
This is a drop of' 30 gpcd from the Water Facility Plan Study in 1997 by MS�E-HK,M
Engineering. The 170 gpcd is an average annual derriand, which includes, domestic use,
conimercial, industrial, irrigation and transient Population use, This value should be used for
planning upgrades, and expansion of the water treatment plant, storage and water inain
distribution sizing, Note that 170 gpccl is not intended for design of services to individual
residences mid buildings. Using the fixture count triethod frorn the LJnif`(:)rrn Plunibing Code is a
rnore accurate way for siizing individual services.
The rnean niaximurn day to average (Jay ratio for the five year period is 2.12 with the high
occurring in 2000 at 2.28. The rnaxinitini day ratio calculated by MS,E-HKM and Aquacrat).
'were 2�,37 and 2,27, respectively, Using a niaxinnini day ratio of .30 is relcorriniended for future
planning of the City of Bozerrian water systein, This is a, slight decrease frour the 19917 Water
Facility Plarn reconiniendation of 2.5.
A diurnal curve was developed for the niaxinulrri day iri 2004 (July 2001) and cornpared against
the average day dernand for the year to calculate the peak hour to average day ratio, see Figure
:x,13.11. "T'he peak hour dernand occurred around 7:00 ami. and was 98,40 gpini,, fhe average (lay
demand for 2004 was 3360 gpin,, The peak hour to the average day ratio is 2.93 on the
nia,ximuni day. MSE-I-IKM used as ratio of 3.0 for this ratio in the 1997 Waller Facility Plan, It is
recommended to continue utilization of`the 3.0 peak liour/average day ratio for this study,,
1 9
E'VvIll,we Co�plith,m oll"I'vis:tht'g, Fat'difics-1)i's lributiol,� c( Sf�,wqg'c Sc,ctton 3' B
Figure 3.B.1 1. 2004 Maximum Day Diurnal Curve
Max. Day Summer l urnal Graph
12000 00 .......
7T
7
1 00�O�O 00
E 8000,00
CL
-,-+.—A Max Day,
iw—Di Lif rial CL HW,
6000.00
4,�
A�q Day Year
Avg Max Day Year
4000 OO
o/o
200(),00
0.00
nt, nv
S, �s p"§P
6 6
Time
20
("ol'u"In"Jon ofL.'.xJ.SIing Facilific,s- LhSiribuii'�,)n & Sio;'e4,�e S("",ction 3-8
Average unaccoun(ed water us,e Ior the past five-ye -s is 1) 7 perg TiL The inajority source of"
lrulj'jcc out, use is estimated to 'be frotri rnetei imicr�ie:§7—'Jfhis, Vliftie is within iccepl,able,
Trational hirtits for, public water supply systejiis, L.,eakage in. tire CIty of Bozenlan water systern
appears Io be at urininium levels and under cont.Tol.
"I'lle distribution of water demand by User type for 2003 is shown, In Figure 3.B.12,
Figure 3.B.11 2003 Water Use Disfi°ibution by User Type
2003 Distribution by User Type
Unaccounted
14%
MSU M Residenfial
11% 0 Commercial
Residential
(D Top 8
City Oigation 48%, OC4 Irrigatiol"I
1%
m Nicol U
Tbp 8 ; M Unaccounted
7%
C mnrm-�rdal
19%
..........
I I ue ae ( ("�l ru,I itiool I ti no I cilittes 1),is I) ibialcyn d,, Srore,h,,C Secli,col i,B
Storage Facilities
Storage Facilities are Used to tneet peak deniarids, tire flows, allow continued service when the
supply is interrupted, equalize system pressure and facilitate the use of" economical pipe sizes
'I he City of' Bozeman storage facilities include three tanks plus a clearwell at the Sourdough
'Freatmeril Plant. 'The tank descriptions and their respective volumes are showri in "I'able 3.B.10,
'fable 3.13,1 fl.. Storage tank descriptions
............... . .........
Description C I onst, Year .Material size Overflow Volume
NGVD 29 Clal/fl,
Datum
-------—----------
Sourdouj),i `_57 5130 126,948
Concrete 4 M C3
......... .......
I fillt 1985 Steel 2 MG 5130 50,811,
— 2P, . ---1 -- 1. 111-1-1-11- ----
Lyman 1889 Concrete 53 MG 5023 Variable, see
rerrdix 1.)
Clearwell 1982 Concrete 0.8 mci 67,3201 > 5'
82,5501 < 5'
...........
DE Q Circular I requires that adequate storage be provided to supply iriaxitnum f e flow plus, the
average (lay dernand. Fire flow requirements vary widely deperiding on a. multitude of factors
such as building construction class, buildlirg, Uell, occupancy arid exposure. It is beyond 1he
scope of this document to calculate required fire flow for every instairce in the City. Iristead, as
maxinaurri fire flow of'5000 gpm flor a duration of hours shalll-)e use(I to calculate the required
stonage volume, 'This valtiewas provided Icy the: City of'Bozenian Fire (Ariefand is supported by
the Insurance Service Office (ISO) maxi,111LUT) Needed Fire Fl (INFF) as presented in their.
Public Protection Classification Report dated January 12, 20W 1 ji 2004, a population of 31,564
and as demand of' 170 9Pcd yields are average daily demand of, ,'37 1 101 , A fire flow event at
5000 gpin for 5 hours yields a volurne of 1-5 M(3 fora total combined required storage of 6 87
Wi. T'he City of"' Bozeman has a total availabic storage VOILUTH, of 12A MG, thus meeting the
mininium requirement ol'MDEQ, A future arralysis of required storage is presented ire Section
5.B.
Sourdoughl'ank
The Sourdough tank is supplied directly fi-ona the 30 inch Sourdough tnansmission mahi N(,.,,1x
b,w-pi�)ss an(] control valves Nvere C011Str'UCtCd in 2004, pr"trnarily to assist in filling the Hilhop twak
once the Sourdough tank is full. A schematic diagrain of the piping and control valves is shown
in Figure 3.113.13, 'Fhe Sourdougji tank. is generally in good condition. However, the following
iterirs were iderifified as needing attention. See Photos 3.B.1 and 1B.2 for reference to these
items,
•
Repair cracki rig concrcte around rim o f r0 C)f
• Re- lace rusting and d�eterioratin�
P , inside ladd!er.
• Abandon old bypass and inlet box.
22
I.,,'valuate (,'ondition (,#'Exisiing ( : Storage St��clion 3,15
0 Leaking valve stern on control valve. Valve can be abandoned,,
0 'Vegetation around tank is a,maintenance issue. Consider adding xeri-scape.
0 Fix drainage issue across Sourdough Road, Consider adding culvert under road.
* Irnprove overall aesthetics of tank.
Hilltop 'Tank
The Hilltop tank is supplied through a network ol"pipes fi-om the Sourdough tank. Although the
overflow elevations of the two tanks are approximately equal, the Hilltop tank historically only
fills to the 80 percent level. flowever, when, the Pear Street Booster Station was put on-line in
2004, the tank level now reaches the 9O percent level, This inforrnation suggests friction loss
through the supply mains are the reason for partial filling of the tank. The Hilltop tank is
generally in good. condition. However, the following items were identified as needing attention,
See Photo 3.B.3 for reference to these iterns.
• New paint is needed inside and outside, Ice formation on inside wears paint.
• Cathodic Protection needs repair and triaintenance.
• A tamper proof vent needs to be installed..
Lyman Reservoir
Tbe Lyinan reservoir is supplied through 16 and 18-inch diameter transmission mains from a
spring fed SOUT-CC, approximately 2.,4 miles upstrearn of the reservoir. The spring water receives
chlorine disinf'ection and fluoridation at, the hilet Control Building beffire entering the reservoir.
See Section 3.0 for a more detailed description of the Lyman Creek Source. Lyinan reservoir
supplies the City through an t&irich transn'rission main. Supply is provided primarily to the
north and northwest zones, but can also supply the south zone through the Pear Street Booster
Station. Lfpgrades to Lyrnan reservoir were completed in 2004 at which time it was placed back
on-line. tJpgrades to the reservoir included fixing, a leak, which at present is still being resolved,
and adding downstrearn, piping, valves and meters, The following items were identified as still
needing attention.
• RCTnove an- vents through doors, and replace with tamper proof vents through walls.,
• Tank level sensor in outlet pipe causes reading inaccuracies during flow. Needs to be
MoVed to inside of tank.,
• Chlorine residual is measured at outlet, needs, to be at inlet,
23
45' BENDS N coI,,I I-ROLS —
& VALVE I, III 18" CONTROL
VALVE
/71
.500 TRANSWSSf ONI MAHN
VA I..VE TEE
30"0 W/ PLUG--/
30 x
SS 18" 30"o BYPASS
CRO 3 0 B U T T E R'F LY z
VALVE
BUTTERFLY VALVE z W VAINE
00
'n
C) BLDIG.
V)
........ BLJTTERFLY VALVE 30" CONTROL,
VALVE
ef
< 24"0 DIST.
SUPPI
LINE
24"' MOTOR OPERATED 24" GATE 4
RLITTERF1 Y VALVE VALAE
SOURD01,3GH Sl- 18" 1,')'11 s"T'
c:
"',ul P P 1-,y -
E" T'G S E R VP C E
JNE �� f .
0-11,0RINE
24" BUTTERF�-y
VA� VI-`- 24"lEE BIJILDING
24"0 [1ST
9UPFILY
IJNE
24"0 NOT
USED
V,
RESERVOIR INLET
BOX, Nr)T USED --\, 18"o OVERFLOW
N 0-1"
L w USED DRA�N PIPE, NOT
w— U SEE
w-
0
vY
SCALE: NONE
ll(;LRll' 3R.13
COB WATER FAC11,117)"' PLAN Ovd biginecring —------—---
RAV4 By LJG
iEG7
La id Surveying
AIE� 09/9 3/05
Enginect ing I
1,3013RDOUGH BYPASS
PROAC7 t-04-104
(jum
BOZEMAN, Nl0Nl.W\A 4Z SIO,U")H 8YPASS.DWr,
�n
, 7,�,,;�%�lp;�y: rr/✓N7�/'/fir a�/i r J „J 1/ ✓ � /. v l.,r,,r✓ fl { isYrl��,..
,
r;
v Y rrc;. v alr,� � s 1,�,✓ �..
I I p I
v
li
U G ■ T
V'I O 1 A 1`k.
AESTHETICS
EVIDENCE OF CRACKING
it r/f ��//rJ��✓��1�7�%f�
RIM'I O F ROOF
F
OLD, BYPASS
' r�/l/�ll(�I�IsI`✓7 V /
a � ru �alr��1 //i�/rii�%✓7f�ij�✓r�i/i�l�l/li(,/J/✓/1 , ari/ r
� + �� i //r ri/,��✓Irf6rrr, %y�//��/�l�/�fr//�///�f�x�N (pry die
"-
7;
AND INLET BOX
,rwa,
aa DRAWN "' N
COB WATER A rrom SOURDOUGH TANK IMAGE �
M4 M H�
7 e aciiza :ngnew MIkUJE/T 0 EJ TOO......
BOZEMAN, MONTANA
VIEW SHOWING
MAINTENANCE CONCERN
F VEGETATION
r„ AROUND TANK.
.
DRAIN FROM
r
r
r.
li' �u aner ry ui r ° ! dl�
VALVE VAULT
EMPTIES ACROSS
SOURDOUGH ROAD
r
a!1 i,nr
�) ar OLD CHLORINATION
„ y1 ,�llr
BUILDING
COB WATER FACILITY PLAN
i 1 , neenng fav
Land vying %7D
SOU , IMAGES c nvh iaX Engi em.-ing PdaeTi f e t r�4:04-uy�l
ay
7Z� w �� "
..........
r
77 �� '-7
o/ii
I.
i
HILLTOP TANK
EVIDENCE
SHOWING NEED
FOR NEW PAINT
COB WATER FACILITY PlAN miow 3.B.3
!
+b S Civil t ngiaaceling
9" WC
HILLTOP TANK IMAGE t a and Surveying
/ , mn�rn�stt.eew�adwa —....
�,� °�� ,d r �"� �,� �� C,ra imro��"z-natl"
r� �
BOO N,MONK N _ . ........AGE
Evaluate Condifioii qf'Exisling (9, Storage Section 3..B
Booster Station
The Pear Street Booster Station was constructed in 1957' to supply water, from the Lyman
Reservoir to the south zone, The booster station was non.-operational from 1986 to 2004, In
Rine of 2004 it was put back on-line along with the Lyman reservoir. The cost of running the
Pear street Booster purrips is estimated to be $1 O00 per month for power consumption.
The booster station building, is constructed of"mwsorry arid is heated during the Winter months.
The booster station uses two 50 HP pumps and a third smaller pump, which is currently non-
operational. The two 50 HP' punups cycle independently throughout the day. The pumps operate
at about 1500 Lpm and 360 feet of head. No Pump curves could he found for the pumps, The
booster station also includes slow opening, control valves at the discharge side of each primp to
prevent surges and water hammer in the system. A PRV and control valve is installed on a
bypass fine, which allows flow frorn the south zone to the north zone when the pumps are non-
operational, In addition, the booster station is equipped with a backup diesel generator capable
of running for 3 to 5 days.
It is reconimended to add new pumps and soft starters to increase the efficiency of the booster
station. No other upgrades or repairs were determined,
The only other booster pumps in the City of Bozeman water system are to individual homes
staTounding the Hilltop tank and at Suridance Springs for the irrigation systems. The homes near
the Hilltop tank would normally have non-boosted pressures as low as 15 psi.
Pressure Reducing,Valves
There are 14 Pressure Reducing Valve (PRV) stations in the City of Bozeman water, system.
These PRV's form the boundary between the south, north and northwest zone, see Figure 3.B.I.
A PRV station is an underground vault which houses two PRV valves for low and high flow
situations, Table 3.B.1 I lists all of the PRV stations zind their settings as of October 18, 2005.
PRV number three has a reverse flow feature, which would allow reverse flow from the north
zone to the south if the pressure in the south zone dropped, However, for this to occur the
system head would have to drop, 66 feet below the base of the Hilltop tank, Therefore, the
function of the reverse flow on this PRV is for all practical purposes "non-f=unctional"",
28
Evoluette Condition qj'Exisling <,CS'forage Section 3,B
Table 3.B.I I. Citv of Bozeman P,RV information
........... .......-------
Station # Location Primary. Secondary Downstream
--
Valve Valve Pressure Setth
------ .........
I Manley Road Y 8"
80-Psi
2 Gallatin Park 311 s
� 3 11 th, south of Tschacbe 4" 81, 124
Tschache, west of I Ith 4" 81t 2
5 Costco - Pressure, Relief Va,lve, not 4" 142 psi, blowoff
a Ply Lsettirw
toned c, north of Oak, 41"
7 Oak, west of Woodland 4" 81� 1 '7
si
Ana dra .............
and 27m 2" 61-1 75 psi
Hunters Way,north of Durston 7'5 psi
10 Durston,west of 311
Cottonwood and Babcock 4" 81,
Fer n, north of Durston 21' 611
13 Sanders, north of Dui ston 211 6" -0-p-s-
1V
14 Redw'JIF 13
" 85 1
� 15 New Holland, north of Durst(� 2
The City of Bozeman design standards require a PRV to be installed whenever the downstream
main pressure exceeds 120 psi. Typical household pressures can range fforn 35 to 80 psi, with.
45 to 60 psi being the ideal range. Therefore,, any customers who are connected to a water main
with pressures over 80 psi should have individual PR 's installed on their service line.
Allowing water mains to carry higher pressures creates fewer pressure zones, but also increases
water loss during, leaks and can increase susceptibility to water hammer. Since the City uses
ductile iron pipe, leaks are rnininial, and individual PR 's are much cheaper than installing a
mainline PRV. It is recommended that the City continue to utilize the maximum 120 psi
standard,
There are a few areas in the City that have Pressures exceeding the 120 psi maximum, In the
vicinity of Oak-, Street near the Bridger Creek Shopping Center, pressures are as high as 165 psi.
This a,ve�a, has been experiencing water hannner Problems over the last several years. Water
banuner is mi event in whicli a shock wave of water occurs in the mains, and travels at high
speeds, which cart lead to service line and fixture breaks. Additional research should 'be
conducted to solve the water hammer problems. Installitig additional PRV stations to lower the
pressures should also be considered.
When multiple PRV stations are installed, typically there are lead and lag stations. Lead stations
open first and then its dernand in the system increases and pressure drops on the downstream side
additional ('I lag f) PRY stations open. This creates a phenomenon o non-uniform flow, In other
words, soine areas will receive better circulation of water f=rom the lead PRA', whereas other
areas will be in "dead zoo nes" due to the lag PRV's not opening as ofien. 'This phenoinenon
29
1/1 edit(, le fil if n) r IP/ k X ie th Ig FM�ih I ieo�,.-I Nslrih I I I h n I d", "S'le Sw a h,ap� 3,H
uppears to exist in Bozenian and has an impact on water quality. The lead PRV"s alloNv good
niixirig of water and inaintain proper chlorine levels, while the tag PRV"s do not. A uniftmn
now through all the FIRV's would be an ideal situation. However, research with the PRV
representative, GC Systems, has shown that creating uniforrn flow, through all RV's is not a
possible scenario, Variations in den'tand and system hydraulics always create a lead and a lag
PRV" PR 's control pressure, riot flow. Both flow and pressure cannot be controlled
Sin'Whaneously, The best solution is to afternate the lead PRV. This cotild be accornplished by
ad.justing the PRV setting manuaHy or reinotely through a SCADA system.
Distribution Facilities
T'here is approximately 200 irdles of water mains in the City's water' distribUtiOrk SySteol
DUCtilC frork pipe, the current standard specification for new wairer niains, comprises
approxiinatelY 67,5 percent of the system. Cast Iron mains, primarily installed prior to 1950,
comprise approximately 29 percent of(he total mains, The rientairang materials include Concrete
an(] Steel making Up L5 and 2 percent ofthie total systern, respectively, Main sizes range front 4
to 30 inches, Table 3.8.12 shows a list off` gripe sizes and their associated lengil'is for the entire
systern,
Table-3.8.12. S st e Diameters and Len, ths
4 706
6 3,12,156
8 345,127
10 110,857
12 134,238
141 34,473
16 6,329
18 23,9 —1
24 22,845
30 13,624
—fo—ti f-LE e n gth......... N EINMEW,
Condition ofthc watei, rnains is genctally considered "'above average" to tic xcellew". 'The high
integrity of the nutins is prin-larily duc to the use ot'ductile iron pipe, ww hic sunder opfitnum soil
conditions exhibits, a long life expectancy, oil conditions in tiles l3ozeinan area are generally
non-corrosive, lending to an environment well-strited fi)r ductile iron pipe use. In addition,
ductile iron pipe exhibits exccptional resilience to high pressures, water harnmer and impacts
froni excaval ilon equipment. Since ',1989 the City has experienceld less than 40 main breaks,
The ('try of' Bozetmtn specifies a rninimuni rnaln size of 8 inches in their design standards,
CUrrendy, approximately 34 percent of the City's water systent consists ofinain sizes less than 8
inches,
30
h.valualt 'emililloll o/ wr.wraiw I'm I)bal iburiwl A Sl())"
Sa l(
In general, the C ity has adopted a "replace as needed" policy for their water mairis. Replac errs ent
of water mains has primarily been cornpleled on the basis of main "size" upgrades, rather than
aging and deteriorating pipe. This is evident by the fact that some mains date back to 1889.
Because of' Bozetnan's excellent history of water main lotligevity it lads been difficult to
delerrnine at what age pipe should be replaced, however, in general 100 years of service is being
proposed as an adequate useful life. By the year 2020, 14, percent of" l3ozernan's water manIS
will be over 100 years old. A complete 'water main inventory, listing age and current value is
presented in Appendix B.3,
Recortit'nendal ion for water main upgrades and replacernents is priesented in Section 5.R,
apacity
Transmission mains are designed to carry large arnounts of water and typically do not have
individual service connections, Transmission mains parry water to distribution niains, which are
typically snialler in size and have service connections, Transmission ma,ins arC! LISrually the
primary limiting factor for growth capacity., Schernatic representations of the maJor Irarrsn-lission
mains and their supply capacity are shown in Figures 31.B.14 and 3.B.15,
Redundancy
Redundancy in a distribution system is provided prunarily through "looped" mains. The City's
standard is to loop all rnains over 500 feet in length. There are three areas that lack redundancy
in: the City's water syslerri. The most critical area is supply fi-orn the Hyalite/Sourdough Water
'Freatment Plant. The City receives the majority of its water from the 'Freatirient Plant through as
30-ineb concrete transmission main, If this main is off-fillne for any, reason, the City %vill nec-xi to
rely on storage from its three rescrvoirs. At 2005 water dernand levels, storage reserves would
be depleted in three days duting the average day deniand and in 24 hours during the maxiniurn
clay demand.
The Latirel Glen Stribdivision area anti developments served on the East Frontage Rroad are two
other areas that are connected to dead end mains, which need looped rnarns, instaHed to provide
re dun darn cY,
Recommendations for providing redundancy are discussed further in Section 5.B.
31
Evaluate Colufiti(,ni (.)/'Existing (k. Storage Y(�letion .3,11
Water Meters
The City of Bozeman Utilizes radio read meters to register usage by customers and generate
r
reVCYILIC, Front 2(r)00 to 2004 al ll the City rneters were replaced, excluding the bases, with radio
read meters. The brand of trieters is ScIflurnberger (Neptune), Meters are read by use of a laptop
and a radio signal front the meter. The laptop will, need to he replaced in the IICXt Couple of years
due to changes in software prograrrinutig. Cost of the: laptop and software is expected to be
around $50,000� Meter bases will be replaced in the next 10 years and meters will need to be
replaced every 15 years, as this is the typical battery life, expectancy. If meters are not replaced
in this time fraine then meter accuracy Nvill be compromised. Meter inaccuracy usually' is in
favor of the customer, wh�ich will result in lost revenue to the City.
Copper water services are the standard Jbr the City. However, there still remains, some lead and
,galvanized services, An inventory of number and location of the lead and galvanized set-vices
was not available at the time of this report. It is recommended that an inventory and replacement
schedule of these services be completed,
O 'I/Staffing
The Water Department currently employs 20 full-time equivalent (FTE) staff acrd one seasonal
employee. Of the 20 FT E's, two are meter readers. The remaining 1.8 FTE's are responsible for
management,; supervising; administration; and maintenance, repair, locates and inspections on
water, sewer and storm sewers. With the recent rise in new developments in the 1990's and
continuing ing at present the later Department has been stressed to keel) up with demands. Locates
atone are averaging 5000 per year and inspections of water services are about 500 per year, In
addition, the department maintains a leakage test program, which has been very successful at
'
minimizing leaks in the system.
A new position for "backflow specialist" has been created to irripletnent and monitor testing and
compliance of backilow systems.. A backflow testing program will need to be developed arld a
backflow ordinance adopted in order to enforce the program.
Overall., the department has done an excellent job of maintaining and servicing the WaJrler systern.
The high pol.ndation growth over the last couple of' decades has, substantially increased the
demands on staff. Additional staff will need to be hired to keep up with dernatids, or the integrity
of the 'water system will suffer in future years,. It is recornniended to hire an additional four to
six t,"fE positions inuned lately. If growth continues at its present rate, ari additional two FTE""s,
maybe needed every four years to maintain quality of service.
34
�'ection 5,B
AddinL) Redundancy to Distribu!jqfl_j r Ip
General
Redundancy is providing alternate access r0U(eS fi)r water supply U) dern,'ind area, Lack of
redmidaricy can cause lack of service to downstream Users during a. water rnain shutdown,
Disrupting water service to an area can cause inore than an irieonvenience; ar the case of a, fire
the results can be catastrophic, In addition, non-looped main, typi,cally have poor circulation,
which can cause poor water quality.
Three areas were identified near the C,ity's canter' limits that lack redundancy,
1. The first and rnost critical is the main supply for the of Bozeman from the
Sour&Ugh Water Treatment Plant, CLIrrently, a single 30-inch asbestos cement wat.er
nimiri supplies the City with racist of its water. Not only will a second transtinission main
provide the security of redundancy i1"the existing 30-inch main is rernoved froni service,
but the existing 30-incti, inain is expected to reach capacity by, the year 2020.
2, T'he LaUITI Glen Subdivision area is served by a single 12-inch Water Main, akmg Durston,
Road.
3, A comniercial ama along the East FrOntage Road is currendy served by a single 10-1nc,11
water main.
These three areas were analyzed in the computer water model fim- sizing additional looped mairis.
The following Table 5.13.3 and Figures 5.13.3, 5.13.4 & 5.B.5 list the recon-irriended
improveirients. See Appendi .3 for a,detailed c(�)sl breakdown,
Table 5.13.3 -- Recommendations for Adding Redundancy
Redundancy Area: Waiter Treatment Plant
Footage I Old Size New Size
Descripffini of Estimait7d
Work Construction Cost"
4,525 N/A 12"
Install New 12" $911,335
Water Maill
------------
2,636 N,/A 24" Install New 24"
.......... $J 10 1, 7 16
Water Main
5,154 N/A 316"
Install New 36" $3,411 78.5
Water Main
17,093 N/A 48" Install New 48" $16,187,712
Water Main
Total $21,682,548
6
A herl Iwo vc'S'A n till I�s i,� Is 11,ibuli�)ti & 5(,,�,,tion
Table 5.13.3 (Continued)— Recornmendations for Adding Redundancy
Redundancy Area: Laurel Glen
Footage Old Size New Size Description of' Estimated
Work Construction Cost
2,302 N/A Install New 12"' $463,623
Water Main
.............
1 ,177 N/A 161" Install New 16"' $2,,303,886
"alter Main
.. ........
Total �2,767,509
Redundane.y Area: Frontage Road
Footage Old Size New Size Descrip oil") of Estimated
ft, Work Construction Cost
1,609 N/A Instal[ New 10" $296,438
Water Main
N/A 1211 Install New 12" $1,480,693
Water Main
...............
..........
71157 N/A 14" Install New 14"' $1,6 29 291
Water Main
719 6" 141$ Replace 6"' Nvith $197,348
New, 14"' Maill
Total S3,603,770
1. hichides mobilization, detnobili'U'vion, lcgul curd costs, 20,,��
2005 C,'(),sls,
engincellng&,�Sign and irispe(-Iion- Estiniah
7
"Fable 5.13.5 – Future Transmission Mains for 2,0-year Planning Period
Footage Old Size New Size Description of Estimated
Work Construction Cost
1,16O N/A 8" Install New 8" S,1,87,746
Water Maitl
26,813 N/A 1011 Install New 10" $4,,939,96O
.................
Water Main
—----------
6 419 N/A 1211 Install New 12"° $12,97'3,,987
W,
22,032 N/A Install N'ew 16" $5,
Water Main
2�,78�7 New 18"' 6,983,839
Water Main
............
6,833 N/A 20" Install New 20" $2,35�7,129
Water Main
23,854 N/A 24" Install New""'IF $91969 779
...... —Water Main
5,2149 N/A 36" Install New 36" S3,545,962
Water Main
..........
5,368 N/A 4211 Install New 4–2-"-- $4,,353,045
Water Main
611 8 Replace 6" with S69,916
New ��'—Main
Total $50,9],2,496
t lncludc,W tnobiliztition, dC[170bi1iZ01iW1, It!W,d tvid c&bninistredion cos/s, 20!��,
Conlingenc, ng desi�qn andinsivetion.
15
...............
Project Name:
Oak Cedar to Main
Estimated Cost: Total Project: UNKNOWN
Project Number: Street Impact Fees — Date Unscheduled
SIF 10 Scheduled:
Purpose: ■ New ❑ Replacement ■' Facility, ❑ Equiprnenf
Project Construct Oak Street from Rouse to Cedar to a collector standard as
Description: identified in the Transportation Plan.
This would make development of an important and underutilized portion of
the City possible, including reclamation of what was a superfund site
(Idaho Pole).
Because of the complicated right-of-way, superfund, and wetland issues, it
is very difficult to estimate the costs of this project. It is included in this
schedule with costs "Unknown" because it has been identified as a project
that could significantly improve travel, if it could be built.
Alternatives SID or Developer Contributions for full construction.
Considered:
Advantages of The need for this project comes from increased traffic due to growth in the
Approving this Bozeman area and the project is eligible for Impact Fee Funds.
Project: Use of Street Impact Funds enables the community to leverage the
available State Urban transportation funds to complete projects and
address more of its pressing transportation needs.
Estimated New Annual Operating & Maintenance Costs: Incremental increases in
Future sweeping, plowing and general maintenance costs. Current cost estimate
Recurring of$8,725 per street mile maintained annually.
Costs:
Funding Given the fact that this portion of street does not currently exist, the project
Sources: will likely be eligible for Street Impact Fees. However, given the scope of
the project, costs are unknown.
City of Bozeman Capital Improvements Plan FY10-14
City of Bozeman Capital Improvements Plan FY10-14
Project Name:
Oak Rouse to Cedar
Estimated Cost: Total Project: $8,900,000; Street Impact Fees $5,340,000
Project Number: Street Impact Fees — Date Design FY13—
SIF 11 Scheduled: FY14
Construction -
Unscheduled
Purpose- ■ New ❑ Replacement m Facility, ❑ Equipment,
s
Project Construct Oak Street from Rouse to Cedar to a collector standard as
Description: identified in the Transportation Plan.
This would make development of an important and underutilized portion of
the City possible, including reclamation of what was a superfund site
(Idaho Pole).
Alternatives SID or Developer Contributions for full construction.
Considered:
Advantages of Kagy is a State Urban Route and is eligible for expenditure of State urban
Approving this funds designated annually for the City of Bozeman; however, the
Project: availability of urban funds cannot match the pace of the City's
transportation improvement needs.
The need for this project comes from increased traffic due to growth in the
Bozeman area and the project is eligible for Impact Fee Funds. Use of
Street Impact Funds enables the community to leverage the available
State Urban transportation funds to complete projects and address more
of its pressing transportation needs.
Estimated New Annual Operating & Maintenance Costs: Incremental increases in
Future Recurring sweeping, plowing and general maintenance costs. Current cost estimate
Costs:
of$8,725 per street mile maintained annually.
Funding 60% -Street Impact Fees = $5,340,000
Sources: 40% - Other Sources (Developer Contribution, SID, TIF)= $3,560,000
City of Bozeman Capital Improvements Plan FY10-14
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