Report on Water Distribution System - CivicWeb

City of BrockviIIe Public Utilities Commission

Report on Water Distribution System

G O R E & STORRIE L IMITED CONSULTING ENGINEERS

City of Brockville Public Utilities Commission

Report on Water Distribution System

G O R E & S T O R R I E L I M I T E D CONSULTING ENGINEERS

GORE & STORRIE L IMITED CONSULTING ENGINEERS SUITE 7 0 0 , 331 COOPER STREET

ESTABLISHED 1 9 1 9 OTTAWA, O N T A R I O K 2 P O G 5

MEMBER C.E.0 . -A.C.E.C. T E L E P H O N E (613) 2 3 8 - 7 7 0 2

Brockv i l l e Pub1 i c U t i l i t i e s Commission P.O. Box 157 B r o c k v i l l e, On ta r io K6V 5V2

A t t e n t i o n : Mr. J . H. Roughley, C. E.T. Manager

Re: City o f B r o c k v i l l e Water D i s t r i b u t i o n System Ana lys is

We a r e pleased t o s ~ i b m i t herewi th ou r r e p o r t on t h e City o f B r o c k v i l l e Water

D i s t r i b u t i o n System.

The pr imary purposes o f t h e study were t o :

a ) I n v e s t i g a t e e x i s t i n g problem areas w i t h i n t h e d i s t r i b u t i o n system

and make recommendations f o r t he necessary works t o c o r r e c t these

prob l em areas.

b ) Provide a Master Plan f o r development o f t he Water D i s t r i b u t i o n

System, t o s e r v i c e e x i s t i n g and f u t u r e development as i n d i c a t e d

by t h e C i t y ' s O f f i c i a l Plan.

I n con junc t ion w i t h t h e Master Plan, a number o f c a p i t a l works p r o j e c t s were

developed t o a s s i s t t he City i n t h e o r d e r l y development of t h e water system, t o

so l ve present problem areas, as w e l l as t o meet demands on t h e system imposed

by i nc reas ing devel opment.

The var ious c a p i t a l works p r o j e c t s which a re recommended i n t h e r e p o r t a re

summarized as f o l l o w s :

H E A D O F F I C E 1 6 7 0 B A Y V I E W A V E N U E T O R O N T O O N T A R I O M4G 3C2

I GORE e STORRIE LIMITED TO B r o c k v i l l e Publ ic U t i l i t i e s DATE 1958 10 31 Commission

The f o l l ow ing works are considered t o be 1 s t p r i o r i t y and are required before -

I Creation of a second pressurezone nor th of Highway No. 401

as shown on the Master Plan. This w i l l r equ i r e a separate . .

Pumping Stat ion, drawing from the Parkdale Avenue Reservoir

1 and pumping t o a Hydraul i c Grade L ine o f 520 f e e t (1 58 m) . The Zone I 1 Pumping S ta t ion w i l l have an i n i t i a l capaci ty

I o f 5 mgd (22.73 ML) and an u l t ima te capaci ty of 10 mgd

(45.46 ML) $400,000.

I n conjunct ion w i t h the new Zone I 1 Pumping Stat ion, a

20-inch diameter (500 mm) feeder main from the Zone I 1

Pumping S ta t ion t o Cal i f o r n i a Avenue, approximately

500 f e e t (1 52 m) long, w i l l be requ i red. $ 35,000.

The fo l lowing works a re considered t o be 2nd p r i o r i t y and w i l l sometime

I a f t e r 1983, but probably before 1989, depending on development:

- Construct ion o f a 20-inch diameter (500 m) feeder main

west from the Zone I1 Pumping S ta t i on across the CPR,

nor th t o Laur ie r Boulevard and west t o the B r i d l ewood

Subdivision, approximately 4900 f e e t (1494 m) long.

- Construct ion o f a 20-inch diameter (500 mm) feeder main,

east on Brock S t ree t from the e x i s t i n g 16-inch diameter

(400 mm) feeder main on Perth S t ree t t o Tunnel Avenue,

nor th and east adjacent t o the ra i lway rights-of-way t o

Park Street , no r th t o Maple St reet , east t o Ormond S t ree t

and then nor th t o the Parkdale Avenue Reservoir, approx-

imate ly 9300 f e e t (2835 m). 'This feeder main w i l l a lso

be connected t o the 20-inch diameter (500 rm) feeder

main on Charles S t ree t a t Park S t r e e t .

GORE & STORRIE LIMITED

I . .. . .

B r o c k v i l l e Pub l i c U t i l i t i e s DATE 1978 10 31 Commission

para1 l e l t o Parkdale Avenue from the 20-inch diameter

(500 nun) feeder main a t the CPR, west t o M i l 1 wood Road,

appro-ximately 1650 f e e t (503 m). $ 70,000

The f o l l ow ing works a re considered t o be 3rd p r i o r i t y and w i l l be requ i red

sometime a f t e r 1989, depending on demands f o r new development. These works

may be considered on an "as and when requ i red" basis.

- Expansion o f the Parkdale Avenue Ground Storage

Reservoir by 2 mg (9.09 ML). $600,000

- .Const ruc t ion o f a 16-inch diameter (400 mm) feeder main

no r t h from the 20-inch diameter (500 mm) feeder main on

Lau r i e r Boulevard through the B r i d l ewood Subdiv is ion t o

Centennial Road, east t o Cal i f o r n i a Boul evard and south

t o the e x i s t i n g 12-inch diameter (300 mm) feeder main,

approximately 7600 f e e t (2316 m).

- Construct ion o f a 12-inch diameter (300 nun) feeder main,

west on Centennial Road from the Bridlewood Subdiv is ion

t o Windsor Dr i ve and then south t o the e x i s t i n g system,

approximately 4600 f e e t (1402 m). $1 95,000.

- Construct ion o f a 12-inch diameter (300 nun) feeder main,

east on Parkdale Avenue from the e x i s t i n g 12-inch (300 mm)

feeder main t o North Augusta Road, no r t h t o Lau r i e r

Boulevard and then west t o the e x i s t i n g 12-inch diameter

(300 mm) near Cal i f o r n i a Avenue, approxiniately 8200 f e e t (2499 m). $345,000.

GORE a STORRIE LIMITED TO ~ r o c k v i l l e Pub l i c U t i l i t i e s DATE 1978 10 31 PAGE 4 Commission

- Const ruct ion o f a 16-inch diameter (400 mm) feeder main

on Cedar S t ree t , no r t h f rom the 24-inch (600 mm) feeder

main on Brock S t ree t , across the CNR t o Hubbell, west

I and no r t h through t he proposed i n d u s t r i a l area t o the

extension o f Central Avenue, approximately 3150 f e e t

(960 m). Also a 12-inch diameter (300 mm) feeder main

from t h i s proposed 16-inch diameter (400 mm) west t o

Centre S t r e e t and east t o Strowger Boulevard,

approximately 3900 f e e t (1189 m)

- Construct ion o f a 24-inch diameter (600 mm) feeder main

no r t h on Rivers Avenue from the Water P u r i f i c a t i o n P lan t

t o King S t ree t , eas t t o Cedar S t ree t , no r th t o Brock

S t ree t and then eas t t o Per th S t ree t , approximately

6600 f e e t (201 2 m) .

- Relocat ion o f e x i s t i n g 0.50 mg (2.27 ML) Elevated Tank

on Broadway Avenl~e east o f North Augusta Road, p lus

approximately 900 f e e t (274 m) o f 12-inch diameter

(300 mm) feeder main. $675,000.

We have appreciated very much the e x c e l l e n t co-operation which we have received

throughout t he course o f t h e study f rom the s t a f f o f t he B r o c k v i l l e Publ ic

U t i l i t i e s Commission, f o r which we wish t o express our s incere thanks.

We t r u s t t he r e p o r t i s complete i n accordance w i t h the Terms o f Reference

developed f o r t he study and t h a t t he r e p o r t w i l l p rov ide the Cornmission w i t h

valuable and usefu l i n fo rmat ion i n t h e con t inu ing programme o f improving and

expanding the water d i s t r i b u t i o n system.

A l l o f which i s r e s p e c t f u l l y submitted.

Yours very t r u l y , /

J. C. Anderson, P.Eng. W. Moo - Branch Manager Chie f Eng

ire, P. ti neer

Eng . Muni c i

z - K. W. MOORE m m

Services

SECTION 1 - INTRODUCTION

GENERAL

TERMS OF REFERENCE

SECTION 2 - B A S I C DESIGN DATA

AREA TO BE SERVED

LAND USE

POPLILATION

TABLE OF CONTENTS

P a g e No.

SECTION 3 - WATER CONSUMPTION

GENERAL

AVERAGE CONSUMPTION

MAXIMUM CONDITIONS

ADOPTED CONSLIMPTION RATES

F I R E FLOW CONDITIONS

SECTIOIU 4 - WATER SYSTEM OPERATION

GENERAL

OPTIONS

PRESSURE ZONES

STORAGE

SECTION 5 - WATER DIS'TRIBUTION SYSTEM

GENERAL

PROPOSED D I S T R I B U T I O N NETWORK

ANALYSIS METHOD

ANALYSIS OF THE PRESENT SYSTEM

ANALYSIS OF THE PROPOSED SYSTEM

C I T Y SYSTEM

SYSTEM STORAGE

ZONE I 1 BOOSTER PUMPING STATION

SYSTEM IMPROVEMENTS

SECTION 6 - RECOMMENDATIONS AND PHASING

GENERAL

SllMMARY OF RECOMMENDATIONS

PHASING OF WORKS

P a g e No.

SECTION 1

GENERAL

SECTION 1

INTRODUCTION

Th is study was author ized by t h e B r o c k v i l l e Pub l i c U t i l i t i e s Commission, t o

provide t h e Commission w i t h s h o r t term and long range p lann ing requirements f o r

t h e water d i s t r i b u t i o n system t o s a t i s f y both t h e present and f u t u r e water de-

mands i n the City. I n a d d i t i o n , 1 i m i ted f u t u r e supply requirements were considered

f o r areas ou ts ide o f t h e City boundary.

The study inc ludes an i n v e s t i g a t i o n o f t h e e x i s t i n g supply system r e l a t e d t o i t s

capabi l i t y t o serve t h e p resen t l y developed areas w i t h i n t h e City boundary and t h e

expansion of t h e e x i s t i n g system t o supply a l l p o t e n t i a l development areas w i t h i n

t h e City, i n accordance w i t h t h e c u r r e n t O f f i c i a l Plan o f t h e B r o c k v i l l e and

E l izabethtown Planning Area - City o f B r o c k v i l l e Sect ion

TERMS OF REFERENCE

The Terms o f Reference o f t h i s study a r e based on t h e Proposal dated August 3, 1977,

submitted t o t h e Pub l i c U t i l i t i e s Commission by Gore & S t o r r i e L imi ted, and a re

summarized as fo l l ows :

7 . Develop a l o n g /range Matm Plan 604 theaupp ly and

d i 6 f i b u t i o n 0 5 umtm a% exi6aXng and &Wu2 develop-

m e d a detehmined by t h e C@'a O d d i c i a e Plan.

2 . 7nvuaXgaAe and PhOpOae t h e necuaahy hphove! t Ied

,to any dedic ienc iu i n t h e phes ent waAm di6.t)LibLL.t-

i o n aybtem ,to aatibdy ph&5ent day demand.

3 . Phepahe a hep0k-t on t h e dLLeey developed watm dinXz,ibuaXon ayatem, inchd ing any n e c u a m y c a p m

ccrahh phogtramme doh t h e next dive y m i n d m and

complete cui/th coat & 5 h & & 5 , and a aaged phoghamme

doh imXaBaLion 0 6 t h e hemaindm od t h e hecommended

~ 0 h h .

4 . P/rovde f ie pubfie u w i a Cornminsion ~ L t h & /r&evan*t cornpu#a ouApLLt used i n f i e devetoprnent 0 6 f i e Mats Phn .

SECTION 2

BASIC DESIGN DATA

SECTION 2

BASIC DESIGN DATA

AREA TO BE SERVED

The area t o be served by t h e f u t u r e water d i s t r i b u t i o n system inc ludes a l l

developable lands w i t h i n the present City o f B r o c k v i l l e Boundary , exc lud ing a l l

areas w i t h i n t h e City p r e s e n t l y zoned as open . F igure No. 1, found a t t h e back

o f t h i s r e p o r t , i s a p l a n which shows t h e ex ten t o f t h e City o f B r o c k v i l l e , which

comprises an area o f approximately 5100 acres ( 2 064 ha) .*

The land use designat ions used f o r t h e City o f B r o c k v i l l e a r e i n accordance w i t h

t h e c u r r e n t O f f i c i a l Plan o f t h e B r o c k v i l l e and El izabethtown Planning Area, as

we1 1 as t h e City o f B r o c k v i l l e Zoning By-Law and t h e zoning p lan provided by the

The City o f B r o c k v i l l e conta ins approximately 5100 acres ( 2 064 ha). For ana lys i s

purposes, and i n accordance w i t h t h e zoning plan, t h i s area i s d i v ided approximately ,

as fo l l ows :

C Res iden t ia l

Domes ti c Commercial 2350 acres ( 951 ha)

I n s t i t u t i o n a l

I n d u s t r i a l 1100 acres ( 445 ha)

Open Space

Open Vacant 1650 acres ( 668 ha)

To ta l 5100 acres ( 2 064 ha)

* equ iva len t m e t r i c q u a n t i t i e s a r e shown i n brackets

For t h e purpose o f t h i s study, o n l y lands p resen t l y zoned r e s i d e n t i a l , commercial,

i n s t i t u t i o n a l and i n d u s t r i a l have been considered f o r s e r v i c i n g by t h e Master

Plan. The 1000 acres (405 ha) o f l a n d i n t h e n o r t h western p o r t i o n o f t h e City,

which i s p resen t l y zoned r u r a l , has n o t been considered i n d e t a i l f o r s e r v i c i n g

a t t h i s t ime. However, a s u b j e c t i v e rev iew o f t h i s area i n d i c a t e s t h a t t h e

system can r e a d i l y be extended t o se rv i ce development i n t h i s area a t such t ime

as i t may be requ i red i n t h e f u t u r e . D e t a i l s o f feeder main requirements should

be assessed fo r updat ing of t h e Master Plan i n t h i s area a t t h a t t ime.

The e x i s t i n g development a long Highway No. 2, eas t o f and adjacent t o t h e City,

which i s p resen t l y serv iced by t h e d i s t r i b u t i o n system, has been inc luded i n t h i s

study and has an area o f approximately 100 acres (41 ha). Th is development i n -

c l udes t h e Ontar io P s y c h i a t r i c Hosp i ta l , t h e Sherwood Park Manor Nursing Home, and

t h e S t . Lawrence Lodge Senior C i t i z e n Home.

I n t h i s study, t h e commercial and i n s t i t u t i o n a l lands have been lumped together

w i t h t h e r e s i d e n t i a l lands because o f t h e i r s i m i l a r consumption c h a r a c t e r i s t i c s .

The acreage f o r t h e i n s t i t u t i o n s p r e s e n t l y served ou ts ide the City a r e a l so i n -

cluded here. The land uses and areas considered f o r s e r v i c i n g i n t h e Master Plan

are, there fore , as fo l l ows :

Res ident ia l ( i nc l uding Commercial & I n s t i t u t i o n a l ) 2350 acres ( 951 ha)

Res ident ia l (ou ts ide C i t y ) 100 acres ( 41 ha)

I n d u s t r i a l 1100 acres ( 445 ha)

To ta l 3550 acres (1 437 ha)

POPULATION

Present ly , t he zoned lands w i t h i n t h e City boundaries a r e approximately 60%

developed, w i t h an e x i s t i n g popu la t ion o f approximately 20,000 persons and a r e -

su l t i ng average gross popul a t i o n dens i t y o f approxiniately 9 persons per acre

(22 persons per ha).

The present popu la t i on served i n t h e Ontar io P s y c h i a t r i c Hosp i ta l , S t . Lawrence

Lodge and t h e Sherwood Park Manor, l oca ted j u s t eas t o f t h e City, i s approx-

ima te l y 1500 persons. Th is inc ludes a l l res idents , p l u s t h e maximum expected

working s t a f f on any one s h i f t and i s expected t o remain r e l a t i v e l y constant

w i t h i n t h e foreseeable f u t u r e .

The f u t u r e popu la t i on f o r t h e study area, when cons ider ing o n l y lands t h a t a r e

p resen t l y zoned r e s i d e n t i a l , i s expected t o even tua l l y reach 35,250 persons, ac-

cord ing t o the O f f i c i a l Plan. Th is p r o j e c t i o n i s based on r e s i d e n t i a l acreage

s t a t e d above and an average r e s i d e n t i a l d e n s i t y o f approximately 15 persons per

acre (37 persons per ha). The s e r v i c e popu la t i on o f t h e i n s t i t u t i o n s served out -

s i d e the City i s expected t o remain stab1 e a t about 1500 persons. Th is g ives a

t o t a l p ro jec ted popu la t i on o f 36,750 persons f o r t h e mature s t a t e development o f

t he study area. The O f f i c i a l P lan a l s o s t a t e s t h a t t h e 1996 expected popu la t ion

served should be about 28,500 persons.

No o the r areas o u t s i d e of t h e City boundaries have been a c t i v e l y considered fo r

s e r v i c i n g a t t h i s t ime.

An approximate annual p ro jec ted .g rowth r a t e o f 1.6% has been es tab l ished and i s

presented i n t h e O f f i c i a l Plan. Th is r a t e o f growth appears r e a l i s t i c and was

adopted f o r t h i s s tudy. F igu re No. 2 opposi te, is a graph which shows the pas t

growth r a t e o f t h e City o f B r o c k v i l l e , as w e l l as t h e f u t u r e p ro jec ted growth

r a t e f o r t he City. Th is F igu re shows t h a t t h e mature s t a t e development populat-

i o n f o r t h e City o f B r o c k v i l l e should be reached sometime a f t e r t h e year 201 0.

I t a1 so shows an expected popu la t i on t o be served by 1996,of about 27,000

persons w i t h i n t h e City. An a d d i t i o n a l 1500 persons must be added t o t h i s f i g u r e

t o account f o r t h e ou ts ide s e r v i c e area f o r a t o t a l s e r v i c e popu la t ion o f

approximately 28,500.

S E C T I O N 3

WATER CONSUMPTION

SECTION 3

WATER CONSUMPTION

GENERAL

The water records f rom the Water P u r i f i c a t i o n P l a n t over a per iod o f 10 years,

as shown i n Table No. l,below, have been analysed i n order t o e s t a b l i s h t o t a l con-

sumption r a t e s f o r t h e City. I n add i t i on , meter record t o t a l s f o r a l l of the

r e s i d e n t i a l and general metered customers f o r the l a s t 4 years were analysed i n

order t o is01 a t e t he 1 a rges t i n d u s t r i a l consumers and t o es tab l i s h r e s i d e n t i a l

and commercial consumption ra tes , as we l l as t o i d e n t i f y a q u a n t i t y f o r

unaccounted-for water.

TABLE NO. 1

SUMMARY OF WATER PLANT RECORDS

Rat io

Max. Day t o Avq. Day

Maximum Day

Tota l Per Capi ta (MGD ) (gpcd)

4.937 231

4.722 21 9

4.914 241

4.896 229

4.304 203

4.888 231

5.037 236

5.640 263

4.648 21 6

4.731 220

Averaqe Day

' T o t a l Per Capi ta (MGD) (gpcd )

3.910 183

3.739 174

3.790 181

3.762 176

3.628 171

3.765 178

3.949 185

4.249 1 98

3.701 172

3.568 166

Year Popula t ion

I i n s t i t u t i o n s )

1968 21 330

1969 21 516

1970 20 926

1971 21 393

1972 21 232

1973 21 174

1974 21 316

1975 21 446

1976 21 513

1977 21 500

I , AVERAGE CONSLIMPTION

I Based on the ana lys is o f the water records provided by the U t i l i t i e s Con~niission

and experience gained i n o the r s i m i l a r mun i c i pa l i t i e s i n Eastern Ontario, the

ove ra l l average day consumption r a t e was s e t a t 175 ga l lons per cap i ta per day

(796 L/p/d) . This average day consumption r a t e i n c l udes a1 1 r es i den t i a l , com-

merc ia l and i n d u s t r i a l consumption, as we l l as an assumed quan t i t y f o r l o s t o r

I unaccounted-for water. This quan t i t y i s somewhat high, which i s due i n par t , t o

the l a rge amount o f unaccounted-for water. An approximate breakdown o f the

average day r a t e i s summarized i n Table No. 2, fo l lowing:

TABLE NO. 2

AVERAGE DAY CONSUMPTION

Res ident ia l 60 gpcd (273 L/p/d) (34%)

I n d u s t r i a l 50 gpcd (227 L/p/d) (29%)

Unaccounted-for Water 65 gpcd (296 L/p/d) (37%)

175 gpcd (796 L/p/d) (100%)

Lands designated f o r I n s t i t u t i o n a l and Commercial purposes i n Brockvi 11 e, represent

about l b% of the t o t a l serv ice area. These lands, because they a re interspersed

w i t h the r e s i d e n t i a l land, and have the same consumption charac te r i s t i cs , have

been included w i t h the r e s i d e n t i a l areas, i n t o one "Domestic" c l a s s i f i c a t i o n .

Examination o f the meter records f o r the past 4 years showed t h a t approximately

37% o f a l l water pumped i n t o the system was n o t metered. Since a l l b u t a few

houses i n the City have water meters, t h i s quan t i t y o f approximately 65 gpcd

(296 L/p/d) i s assumed t o be unaccounted-for. This quan t i t y i s considered t o be

q u i t e h igh and could be due t o leakage from the o lde r mains and house connections.

The normal accepted value i s 15 t o 20 percent o f average day quan t i t i e s and i n -

cludes water f o r f i r e s , s t r e e t f l u sh ing and feedermain breaks, e tc . This unac-

counted-for water has been included w i t h both the Domestic and I n d u s t r i a l average

day consumption, which a re as fo l lows:

Domes t i c

I n d u s t r i a l

To ta l

100 gpcd (455 L/p/d)

75 gpcd (341 L/p/d)

175 gpcd (796 L/p/d)

MAXIMUM CONDITIONS

A water d i s t r i b u t i o n system must be capable o f supp ly ing t h e maximum hour l y demand

t o any p o i n t i n the system, a t such t ime as i s requ i red . The f low cond i t i ons t h a t

p u t t h e most s t r a i n on t h e network have been assumed t o occur on the day o f

maximum demand and a re summarized as fo l l ows :

1. Maximum hour r e s i d e n t i a l consumption, occur ing i n t h e

evening, when lawn water ing i s added t o t h e normal r e s i d e n t i a l

consumption.

2. Maximum hour i n d u s t r i a l consumption, occur ing d u r i n g the day when

t h e i n d u s t r i a l demand i s a t i t s peak.

3. F i r e f l o w demand, which can occur a t any t ime and i s added t o t h e

average o f t h e maximum day consumption.

4. N igh t f lows when t h e consumption r a t e s a r e low and t h e r e s e r v o i r ,

l oca ted away f rom t h e source o f supply, i s being f i l l e d .

Max-imum Day Consumption

The p l a n t records, as shown on Table No. 1, i n d i c a t e t h a t t h e maximum day

consumption r a t e can be more t h a t 1.3 t imes t h e average day r a t e . Th is r a t i o

i s somewhat l e s s than i n o thercommuni t ies t h e s i z e o f B r o c k v i l l e and t h i s i s due,

i n pa r t , t o t h e h i g h p r o p o r t i o n o f unaccounted-for water i n d i c a t e d above, as w e l l

as t h e f a c t t h a t many i n d u s t r i e s i n B r o c k v i l l e have a r e l a t i v e l y constant demand

throughout t h e year . For t h e purpose o f t h i s study, t h e maximunl day r a t e o f 230

gpcd (1 045 L/p/d) has been used. The value o f 230 gpcd, however, i s r e a l i s t i c f o r a

c i t y t h e s i z e of B r o c k v i l l e . An approximate breakdown o f t h e maximum day ra te ,

i n c l u d i n g an al lowance f o r unaccounted-for water i s su~r~marized as fo l l ows :

Domes ti c 125 gpcd ( 568 L/p/d)

I n d u s t r i a1 105 gpcd ( 477 L/p/d)

Tota l 230 gpcd (1 045 L/p/d)

CITY OF BROCKVILLE

0 MDNT. 2 4 6 8 10 NOON 2 4 6 8 10 MDNT.

T I M E

RATE OF CONSUMPTION

ON THE DAY OF MAXIMUM DEMAND

FIGURE No. 3

Peak F l ow Rates

A t y p i c a l r a t e o f consumption curve f o r t he day o f maximum demand i s shown on

F igure No. 3, opposi te. Th is curve i s a composite o f t h e maximum day consumption

r a t e s recorded i n t h e City f o r t h e l a s t 4 years, as w e l l as t h e consumption r a t i o s

used i n t h i s study. Two d i f f e r e n t peak per iods d u r i n g t h e day a r e i nd i ca ted . One

occurs i n t h e evening, represent ing t h e peak r e s i d e n t i a l demand, w h i l e t h e o the r

occurs du r ing the l a t e morning and e a r l y af ternoon, represent ing t h e peak

i n d u s t r i a l demand.

The peak r e s i d e n t i a l demand i s about 50% h igher than t h e average o f t h e maximum

day demand and represents t h e h ighes t consumption f l o w r a t e i n t h e d i s t r i b u t i o n

system. Th is peak w i l l u s u a l l y occur on a summer weekday evening, between

6:00 p.m. and 10:OO p.m. and i s due t o t h e a d d i t i o n o f r e s i d e n t i a l lawn water ing

t o the normal evening consumption. The est imated r a t i o o f peak r e s i d e n t i a l demand

t o maximum day demand o f 1 .5, as seen on F igure No. 3, i s reasonabl e f o r t he type

o f developnient i n d i c a t e d here, a l though i t i s s l i g h t l y low. Th is i s due t o t h e

1 arge q u a n t i t y o f unaccounted-for water i n c l uded as a constant d u r i n g each f l o w

cond i t i on . A maximum hour r e s i d e n t i a l peak demand r a t e of 345 gpcd (1 568 L/p/d)

has been adopted f o r t he purpose o f t h i s s tudy and i s summarized as fo l l ows :

Domes t i c 270 gpcd (1 227 L/p/d)

I n d u s t r i a l 75 gpcd ( 341 L/p/d)

To t a 1 345 gpcd (1 536 L/p/d)

The i n d u s t r i a l peak demand i s somewhat lower and o f a l onger d u r a t i o n than t h e

r e s i d e n t i a l peak demand. Th is peak i s due t o i n d u s t r i a l water use and u s u a l l y

occurs between 10:OO a.m. and 4:00 p.m. du r ing a summer weekday. Most i n d u s t r -

i e s use water main ly d u r i n g t h e i r business hours and a one s h i f t i n d u s t r y w i l l

consume c lose t o i t s d a i l y demand i n an 8 hour per iod, thus, i t s ac tua l consumpt-

i o n r a t e i s a lmost 3 t imes t h e q u a n t i t y used t h a t day. Most i n d u s t r i e s a l so use

c lose t o t h e same q u a n t i t y o f water every day and consume i t a t a r e l a t i v e l y

uni form r a t e throughout t h a t day. The two and t h r e e s h i f t i n d u s t r i e s w i l l r e -

q u i r e t h e i r q u a n t i t y o f water over a longer pe r iod o f t ime a t a lower r a t e ,

thereby inc reas ing t h e average o f t he maximum day r a t e b u t reducing the h o u r l y

f l u c t u a t i o n above t h i s r a t e . Ana lys is o f t he B r o c k v i l l e records shows t h e r a t i o

o f maximum i n d u s t r i a l demand t o t h e maximum day demand t o be approximately 1.1 5.

TABLE NO. 3

ADOPTED CONSUMPTION RATES

AND CONSUMPTION FOR MATURE STATE DEVELOPMENT

FOR THE CITY OF BROCKVILLE

Procter & Gamble

130 acres (53 ha)

Consump- Rate ti on gpad mgd

(L/ha/d) (ML/d) 6000 0.78

(67 399) (3.55)

7000 0.91 (78 633) (4.14)

8500 1 . l o (95 482) (5 .OO)

8500 1.10 (95 482) (5.00)

2500 0.32 (28 083) (1.46)

I n d u s t r i a l Lands

970 acres (392 ha)

Consump- Rate t i on

gpcd gpad mgd (L/p/d) (L/ha/d) (ML/d)

75 2 500 2.43 (341 ) (28 083) (1 1.05)

105 3500 3.40 (477) (39 316) (15.46)

7 5 2500 2.43 (341 ) (28 083) (1 1.05)

1 50 5000 4.85 (682) (56 166) (22.05)

75 2 500 2.43 (341 ) (28 083) (1 1.05)

CONSUMPTION

Average Day

Average f o r Maximum Day

Evening Peak (Resident ia l )

Daytime Peak ( I n d u s t r i a l )

Night Flow (Reservoir F i l l i n g )

3550 acres (1437 ha)

Consump- Rate t i o n gpcd mgd

(L/p/d) (ML/d) 175 6.88

(796) (31 .28)

230 8.91 (1045) (40.50)

345 13.45 (1 568) (61.1 5)

26 5 10.18 (1205) (46.28)

115 4.22 (523) (19.19)

Domestic Lands

2450 acres (992 ha)

Consump- Rate t i o n

g pcd g pad mgd ( ~ / p / d ) ( ~ / h a / d ) ( M L / ~ )

100 1 500 3.67 (455) (1 6 850) (1 6.68)

125 1875 4.60 (568) (21 062) (20.91 )

270 4050 9.92 (1227) (45 495) (45.10)

115 1725 4.23 (523) (19 377) (19.23)

4 0 600 1.47 (182) (6740) (6.68)

This r a t i o i s lower than i s normal ly expected f o r a c i t y t h e s i z e and nature o f

B r o c k v i l l e and i s due, i n pa r t , t o t h e l a r g e q u a n t i t y o f unaccounted-for water i n -

d i ca ted above, as w e l l as t h e l a r g e p r o p o r t i o n o f two and th ree s h i f t i n d u s t r i e s

found i n t h e City. A maximum i n d u s t r i a l peak demand o f 265 gpcd (1 205 L/p/d) has

been adopted f o r t he purpose o f t h i s s tudy and i s summarized as fo l l ows :

Domes t i c 115 gpcd ( 523 L/p/d)

I n d u s t r i a l 150 gpcd ( 682 L/p/d)

To t a 1 265 gpcd (1 205 L/p/d)

The proposed Proc te r and Gamble development on 130 acres (53 ha) i n t h e nor theast

corner o f t h e City o f B r o c k v i l l e , has been t r e a t e d separa te ly f o r t h e purpose o f

t h i s study. The per ac re f l o w r a t e s f o r t h e P roc te r and Gamble p roper t y have been

der ived f rom in fo rmat ion supp l ied by P roc te r and Gamble, based on t h e i r proposed

development o f t h e s i t e . These f l o w r a t e s a r e h igher than f o r t h e o the r i n d u s t r -

i a l areas and have, there fore , been t r e a t e d separa te ly i n t h e ana lys is .

ADOPTED CONSUMPTION RATES

The method o f measuring water consumption i n water d i s t r i b u t i o n systems precludes

developing d e f i n i t i v e f a c t o r s and r a t e s f o r any study. Furthermore, t h e change

i n development and consumption pa t te rns i n t h e f u t u r e and many va r iab les beyond

the scope o f t h i s a n a l y s i s means t h a t these p r e d i c t i o n s are, a t best, assumptions

based on experience gained f rom s i m i l a r s tud ies o f many o t h e r systems.

011 the bas is o f t he foregoing, and the a v a i l a b l e data supp l ied by t h e U t i l i t i e s

Commission and t h e City o f B r o c k v i l l e , t h e consumption r a t e s per acre and t h e

d a i l y consumption f o r t h e mature s t a t e development adopted f o r t h i s study a r e sum-

marized i n Table No. 3,opposite. Consumption r a t e s per acre a re ca l cu la ted on

the bas is o f t h e mature s t a t e development popu la t ion o f 35,250 persons w i t h i n a

development area o f approximately 3450 acres (1 396 ha) i n t h e City o f B r o c k v i l l e,

as we l l as approximately 1500 persons w i t h i n an area o f approximately 100 acres

(41 ha) o u t s i d e o f and ad jacent t o t h e east City boundary. The i n d u s t r i a l peak

f l o w r a t e f o r i n d u s t r i a l lands c a l c u l a t e d on t h i s basis, i s shown t o be approx-

ima te l y 5,000 gpcd (22 730 L/p/d). Th is r a t e i s considered reasonable f o r any

C I T Y O F B R O C K V I L L E

1990 1995 2000 2005 2010

Y E A R

ADOPTED WATER CONSUMPTION RATES

GORE & STORRIE L IMITED F I G U R E No. 4

proposed i n d u s t r i a l development, s incd the re w i l l u s u a l l y be a general mix o f

l i g h t and heavy water consumers w i t h i n t h e development.

As s t a t e d above, t h e water d i s t r i b u t i o n system has been planned f o r a mature

s t a t e development w i t h an equ iva len t popu la t ion o f approximately 37,750 persons.

The popu la t ion p r e d i c t i o n s presented i n Sect ion 2, i n d i c a t e t h a t t h e popu la t ion

o f B r o c k v i l l e cou ld reach t h i s f i g u r e by about t h e year 2015. On t h i s basis,

F igure No. 4 opposi te, is a graph which has been prepared t o i n d i c a t e a pro jec ted

growth i n t h e average day, t h e maximum day and the maximum hour demands.

FIRE FLOW CONDITIONS

F i r e f l o w i s t h e r a t e a t which water i s requ i red t o f i g h t a f i r e and i s determined

from f i r e hazards i n t h e area i n quest ion. Guidel ines f o r t h i s de terminat ion

have been es tab l ished by t h e I n s u r e r s ' Advisory Organ iza t ion ( fo rmer l y t h e

Canadian Underwri t e r s ' Assoc ia t ion) f rom t h e i r experience and study o f ac tua l

f i r e s . The d i s t r i b u t i o n system must be o f adequate s i z e t o prov ide t h i s f i r e

f l o w superimposed on t h e maximum day demand a t a minimum res idua l pressure o f

20 p s i (138 kPa). Th is pressure i s requ i red t o overcome f r i c t i o n losses between

t h e s t r e e t main and t h e f i r e department 's pumpers.

The r e s u l t s o f t h e f i r e f l o w t e s t s conducted by t h e I n s u r e r s ' Advisory Organizat ion

i n September o f 1976, revea led t h a t t h e d i s t r i b u t i o n system could n o t p rov ide the

requ i red f l o w a t 20 p s i (138 kPa) i n t h e event o f a major f i r e a t 10 o u t o f 19

t e s t 1 oca t i o n s .

These d e f i c i e n c i e s w i l l u l t i m a t e l y be cor rec ted through a con t inu ing programme o f

water main replacement and r e h a b i l i t a t i o n , p a r t i c u l a r l y i n t h e o l d e r sec t ions o f

t h e City, t h e extension and loop ing o f t h e e x i s t i n g system where requ i red , and the

establ ishment o f a second pressure zone n o r t h of Highway No. 401.

The proposed water d i s t r i b u t i o n system w i l l be a b l e t o s a t i s f y a l l f i r e f l o w

demands l i s t e d i n t h e r e p o r t by t h e I n s u r e r s ' Advisory Organizat ion, a f t e r a l l t h e

recommended works have been completed. I n our ana lys i s o f t he proposed d i s t r i b u t -

i o n system, we have se lec ted f i r e f lows as recommended by t h e I n s u r e r s ' Advisory

Organizat ion i n t h e i r p u b l i c a t i o n e n t i t l e d "Water Supply f o r Pub l i c F i r e P r o t e c t i o n - a Guide t o Recommended Prac t ice" , pub1 ished i n 1977.

SECTION 4

WATER SYSTEM OPERATION

SECTION 4

WATER SYSTEM OPERATION

GENERAL

I n t h e previous sec t ions o f t h i s r e p o r t , t h e a n t i c i p a t e d development o f land, the

charac ter o f water consumption r a t e s and the volume o f water requ i red t o serve t h e

City o f B r o c k v i l l e i n t h e fu tu re , have been descr ibed. Th is sec t i on w i l l descr ibe

t h e recommended method o f ope ra t i on o f t h e water supply system which, i n tu rn ,

w i l l be t h e bas is f o r s e l e c t i o n o f a l l improvements o f t he many elements o f t h e

water d i s t r i b u t i o n system, i n c l u d i n g t h e Water Plant , feeder and d i s t r i b u t i o n mains,

Ground Storage Reservoi r , Pumping S t a t i o n and E l evated Tank.

OPTIONS

There a re two bas ic op t ions a v a i l a b l e f o r t he opera t i on o f any water supply system.

These are:

1. To operate t h e system w i t h a l l consumption demand suppl ied from

t h e Water P u r i f i c a t i o n P lant , where t h e h igh l i f t pumps and

emergency storage a re 1 ocated and w i t h o u t a d d i t i o n a l s torage

r e s e r v o i r s w i t h i n t h e system.

2. To operate t h e system so t h a t t h e Water P u r i f i c a t i o n P l a n t i s

requ i red t o match t h e average r a t e o f t he maximum day demand

on ly . Demands i n excess o f t h i s f l o w a r e supp l ied as requ i red

from storage r e s e r v o i r s s t r a t e g i c a l l y l o c a t e d w i t h i n the

d i s t r i b u t i o n system.

Se lec t i on of t he best o p t i o n depends on many fac to rs , such as topography, range

o f ground e leva t ions w i t h i n t h e s e r v i c e area, s i z e o f system and t h e ex is tence

and s i z e o f t h e major components w i t h i n t h e system, such as p lan ts , rese rvo i r s ,

feeder mains, e t c .

The U t i l i t i e s Commission has a l ready adopted t h e second o p t i o n as a ma t te r o f

p o l i c y of opera t ion and t h i s o p t i o n i s genera l l y t h e most economical both f o r

opera t i ng and c a p i t a l cos ts f o r any system the s i z e o f B r o c k v i l l e ' s .

The e x i s t i n g Water P u r i f i c a t i o n P lant , h igh l i f t pumping s t a t i o n and feeder

mains a r e capable o f supp ly ing more than t h e present maximum day demand q u a n t i t -

i e s t o the system i f necessary. I n add i t i on , t he re i s s u f f i c i e n t e x i s t i n g

balancing and emergency storage avai 1 ab l e w i t h i n the systerii f o r present maximum

hour requirements.

PRESSURE ZONES

The Water D i s t r i b u t i o n System i s p resen t l y operated p r i m a r i l y as a s i n g l e zone

system, w i t h a d ischarge h y d r a u l i c grade l i n e from t h e Water P u r i f i c a t i o n P l a n t

o f approximately 470 f e e t (143 m) d u r i n g maximum demand cond i t ions . An area o f

approximately 80 acres (32 ha) i n t h e southeast corner o f t h e City, p lus t h e

Ontar io P s y c h i a t r i c Hosp i ta l loca ted i n t h e Township o f El izabethtown, i s now

served through an i n - l i n e booster pumping s t a t i o n on F i r s t Avenue, which can i n -

crease t h e h y d r a u l i c grade l i n e t o t h i s area by up t o 80 f e e t (24 m). Present ly ,

t h e water pressures i n the d i s t r i b u t i o n system range f rom more than 90 p s i

(620 kPa) near the Water P u r i f i c a t i o n Plant , t o approximately 40 p s i (276 kPa)

o r l e s s a long Windsor Dr ive , n o r t h o f Highway No. 401, du r ing maximum demand con-

d i t i o n s . The l a t t e r c o n d i t i o n has caused low pressures i n upper f l o o r s of

some apartment b u i l d i n g s i n t h a t area.

Acceptable pressures i n t h e d i s t r i b u t i o n system vary from a maxinium o f approx-irnately

100 p s i (689 kPa) t o a minimum o f approximately 40 p s i (276 kPa) w i t h a minimum

acceptable pressure o f 20 p s i (138 kPa) when supp ly ing f i r e f l o w requirements.

As t h e Water D i s t r i b u t i o n System grows and the consumption demands increase, the

pressure losses i n t h e system due t o t h e f r i c t i o n w i l l a l so increase, thus lower-

i n g the a v a i l a b l e pressure i n the area n o r t h o f Highway No. 401 unless more feeder

main capac i ty i s a v a i l a b l e f o r t h i s area. A second pressure zone i s recommended

t o increase pressure t o t h i s area, as we1 1 as delay feeder main cons t ruc t i on . The

second pressure zone w i l l be l a r g e r than the one recommended i n the 1970 Report

on the Water D i s t r i b u t i o n System by Gore & S t o r r i e L imi ted, and w i l l i nc lude a l l

o f t he area no r th o f Highway No. 401. The e x i s t i n g system can be e a s i l y i s o l a t e d

n o r t h o f Highway No. 401 and t h e second zone w i l l be c o n t r o l l e d from t h e l o c a t i o n

o f t he r e s e r v o i r and pumping s t a t i o n on Parkdale Avenue.

The system opera t i on used by B r o c k v i l l e requ i res t h a t s torage be provided i n t h e

system for :

a ) balancing, a t such t ime as consumption r a t e s exceed the

average consumption f o r t h e day;

b ) emergency purposes, such as f i r e f i g h t i n g , water p u r i f i c a t i o n

p l a n t f a i l u r e o r feeder main breaks, e t c .

Balancing Storage

Balancing storage i s requ i red whenever t h e r a t e o f consumption exceeds the r a t e

o f the Water P u r i f i c a t i o n P l a n t output . The optimum arrangement descr ibed above,

and p resen t l y u t i l i z e d by B r o c k v i l l e , requ i res t h a t water be s tored i n t h e system

t o supplement t h e Water P u r i f i c a t i o n P l a n t ou tput . The minimum recommended r e -

s e r v o i r capac i t y f o r balancing storage i s about 15% o f maximum day consumption,

as shown on F igure NO. 3. I n t h e f u t u r e system, t h e requ i red balancing storage

ca lcu la ted on t h e bas is o f 15% o f t h e f u t u r e maximum day consumption r a t e o f 8.91

mgd (40.51 ML/d) would be approximately 1.35 mg (6.14 ML) .

A we1 1 operated water supply system w i l l take 15% t o 20% o f a1 1 water consumed on

the maximum day from system storage, u s u a l l y 'between 8:00 a.m. and 10:OO p.m. a t

hou r l y r a t i o s s i m i l a r t o t h a t as shown i n Figure No. 3. The same q u a n t i t y o f

water must be replaced i n t o storage t h a t n i g h t , u s u a l l y between 10:OO p.m. and

8:00 a.m. This balancing storage cou ld come from the Parkdale Avenue r e s e r v o i r ,

t h e Elevated Tank on Per th S t ree t , t h e Water P u r i f i c a t i o n P l a n t c l e a r w e l l /

r e s e r v o i r o r a combinat ion of a l l three, as requ i red .

Emergency Storage

I n a d d i t i o n t o balancing storage, water should be s to red i n t h e system f o r

emergency supply t o augment the system dur ing a major f i r e , feeder main break,

Water P u r i f i c a t i o n P l a n t f a i l u r e o r pump breakdown, e t c . The amount o f emergency

storage requ i red i s governed by the r a t e and d u r a t i o n o f f i r e f low, the re1 i a b i l -

i t y o f t h e system and t h e poss ib le problems i n t h e community i f water supply

I should be reduced o r i n te r rup ted . I t i s recommended, as a guide, t h a t a t l e a s t

one-ha1 f o f the t o t a l average day demand be s to red i n the system f o r eliiergency

supply, i n a d d i t i o n t o the q u a n t i t y requ i red f o r balancing storage. The recom-

I mended emergency storage requirements f o r the fu tu re system, based on one-ha1 f

of the fu ture average day demand, i s there fore , approximately 3.45 mg (1 5.68 ML).

d Storage Requirements

I n accordance w i t h the above, r e s e r v o i r s torage o f approximately 5.0 mg (22.73ML)

i s requ i red fo r the B r o c k v i l l e system, as fo l l ows :

Balancing Storage 1.35 mg ( 6.14 ML)

Emergency Storage 3.45 mg (15.68 ML)

Tota l 4.80 mg (21.82 ML)

Say 5.0 mg (22.73 ML)

The l o c a t i o n and s i z e o f the pressure c o n t r o l l e d balancing and emergency storage

r e s e r v o i r s w i l l be discussed together w i t h the Water D i s t r i b u t i o n System i n

Sect ion 5 o f t h i s r e p o r t .

SECTION 5

WATER DISTRIBUTION SYSTEM

GENERAL

The d i s t r i b u t i o n system must be capable o f d e l i v e r i n g , a t any time, t h e requ i red

q u a n t i t i e s o f water a t acceptable pressures t o meet t h e var ious needs o f t he

community f o r r e s i d e n t i a l , commercial and i n d u s t r i a l uses, etc., as w e l l as f o r

emergency supply and f i r e p r o t e c t i o n .

PROPOSED DISTRIBUTION NETWORK

The Master Plan d i s t r i b u t i o n system developed f o r t h e City i s a network o f mains

which, together w i t h t h e e x i s t i n g and proposed r e s e r v o i r s and pumping s t a t i o n s ,

can serve a l l t he lands designated i n t h e O f f i c i a l P lan as areas f o r development

i n the City o f B r o c k v i l l e , as i n d i c a t e d i n Sect ion 2, as w e l l as an e x i s t i n g l i m i t -

ed ou ts ide supply t o El izabethtown Township. Th is supply network, as developed,

w i l l be capable o f supp ly ing the peak r a t e when maximum day consumption reaches

8.91 mgd (40.50 K / d ) i n t h e system, which cou ld occur when a l l zoned lands w i t h i n

t h e City a r e complete ly developed i n accordance w i t h t h e p resen t l y e x i s t i n g O f f i c i a l

P l an.

The proposed system i s shown on t h e Master Plan - F igure No. 1 , attached t o t h i s

r e p o r t . It has been developed by t r i a l method and computer ana lys is . A l l e x i s t -

i n g watermains, as we1 1 as a l l proposed feeder mains requ i red f o r f u t u r e

development, a re shown on t h i s Master Plan.

ANALYSIS METHOD

Analys is o f t h e f l o w and pressure cond i t i ons i n t h e Water D i s t r i b u t i o n System was

conducted f o r t he f o l l o w i n g cases, assumed t o occur on t h e day o f peak o r maximum

consumption:

1. Maximum r e s i d e n t i a l peak hour - evening f l o w

2. Maximum i n d u s t r i a l peak hour - d a y t i m e f l o w

3. Minimum hour ( n i g h t f l o w ) - together w i t h r e s e r v o i r f i l l i n g

c o n d i t i o n

4. . Average o f t h e maximum day consumption - together w i t h f i r e

f l o w cond i t i on .

These most demanding f l o w cond i t i ons were analysed w i t h t h e he lp o f a d i g i t a l

computer. Large commercial and i n d u s t r i a l f i r e f l ows were s imulated i n Zone I,

w h i l e l a r g e i n d u s t r i a l and r e s i d e n t i a l f i r e f l ows were s imulated i n Zone 11.

Pr in ted r e s u l t s o f a l l o f t h e analyses a r e tnc luded i n a separate appendix. D e t a i l s o f t h e ca l c u l a t i o n s and i n f o r m a t i o n p e r t i n e n t t o t h e corr~puter ou tpu t a r e

a l so inc luded i n t h i s appendix, a long w i t h schematics o f both Zone I and Zone I 1

of t he Water D i s t r i b u t i o n System, F igu re Nos. 5 and 6. These schematics show a l l

mains u t i l i z e d f o r t h e ana lys i s .

ANALYSIS OF THE PRESENT SYSTEM

A computer ana lys i s o f t h e present system was n o t undertaken a t t h i s t ime. I n

view o f our general knowledge o f t he d i s t r i b u t i o n system, o n l y a qu ick manual ex-

aminat ion was undertaken t o t ry t o i d e n t i f y major problem areas and weak p o i n t s

i n t h e system. Through conversat ions w i t h the P u b l i c U t i l i t i e s , i t was found

t h a t t he re i s a general area o f low pressure due t o h i g h land e levat ion , i n t h e

nor thwest sec t i on o f t h e City, n o r t h o f Highway No. 401, b u t no o the r major pro-

blenis a r e ev ident . This w i l l be r e c t i f i e d when t h e second pressure zone i s

es tab l ished.

The 1977 r e p o r t by t h e I n s u r e r s ' Advisory Organizat ion, recommended t h a t an

a l t e r n a t e feeder main f rom t h e h i g h - l i f t d ischarge header i n t h e water p u r i f i c a t -

i o n p l a n t t o King St reet , runn ing independent o f t h e e x i s t i n g 24-inch (600 mm)

feeder main, be requ i red t o p rov ide g rea te r re1 i a b i l i ty and fl e x i b i l i ty of operat-

i o n o f t h e system under maintenance, r e p a i r , o r emergency cond i t i ons . Th is i s n o t

a ser ious problem a t t h i s t ime, s ince feedback f rom the Parkdale Reservoi r w i l l be

ava i l ab l e i n an emergency. This 1 i m i t a t i o n w i l l be overcome. when a second feeder

main i s i n s t a l l e d from the Water P u r i f i c a t i o n P lan t i n t o the d i s t r i b u t i o n system

t o Per th St reet ,

ANALYSIS OF THE PROPOSED SYSTEM

A l l of the C i t y south o f Highway No. 401 , w i t h the exception o f the southeast

area present ly being served by the i n - l i n e Booster Pumping Sta t ion, can i n the

future, be served us ing the e x i s t i n g hydrau l i c grade l i n e from the Water

P u r i f i c a t i o n P lant . Pressure Zone 1 a, operated by the in -1 i n e Booster Sta t ion,

w i l l cont inue t o operate as i t does now.

A second pressure zone i s proposed f o r the area no r t h o f Highway No. 401 and w i l l

be con t ro l l ed from the l o c a t i o n o f the e x i s t i n g pumping s t a t i o n located a t t he

Parkdale Avenue Reservoir. The second pressure zone boundary i s ou t l i ned on

Figure No. 1 - Master Plan.

The f u t u r e maximum day demand f o r the C i t y "mature s t a t e development" i s pro jec ted

t o be up t o 8.91 mgd (40.51 ML/d) w i t h a maximum hour r e s i d e n t i a l demand o f approx-

imate ly 13.45 mgd (61.15 ML/d) and a maximum hour i n d u s t r i a l demand o f 10.18 mgd

(46.28 ML/d) . These val ues a re approximate, used f o r p lanning purposes on ly and

should be reviewed p e r i o d i c a l l y , w i t h cont inu ing updating o f the system Master Plan.

The ana lys is does n o t i nc lude any supply t o areas ou ts ide the C i t y boundaries,

w i t h the exception o f the present ly serv iced area adjacent t o the southeast cor- .

ner o f the C i t y . No lands w i t h i n the C i t y t h a t a re present ly zoned a g r i c u l t u r a l

o r vacant were inc luded f o r se r v i c i ng i n t h i s proposed system.

CITY SYSTEM

When a l l p resent ly zoned lands a re f u l l y developed, the C i t y could conta in

approximately 3,450 acres (1 396 ha) o f serv iced land and a p o p ~ ~ l a t i o n o f up t o

35, 250 persons. An add i t i ona l 1500 persons adjacent t o the southeast corner

o f the City w i l l a l s o cont inue t o be serv iced by t h e system. It i s recommended

t h a t t h e City e s t a b l i s h a second pressure zone n o r t h o f Highway No. 401, i n order

t o increase the s e r v i c e pressure t o t h i s area before much f u r t h e r development

takes p lace t h e r e .

Pressure Zone I

The pr imary improvement requ i red f o r Zone I i s a new feeder main from t h e Water

P u r i f i c a t i o n P l a n t t o t h e Ground Level Storage Reservo i r on Parkdale Avenue a t

C a l i f o r n i a Avenue. This w i l l c o n s i s t o f a 24-inch (600 mm) feeder main from the

Water P u r i f i c a t i o n Plant , n o r t h t o King S t ree t , eas t a long King S t r e e t t o Cedar

S t ree t , n o r t h a long Cedar S t r e e t t o Brock S t r e e t and east a long Brock S t r e e t t o

Per th St reet . The feeder main cont inues as a 20-inch (500 mm) east along Brock

S t r e e t from Per th S t r e e t t o Tunnel Avenue and then n o r t h a long t h e CNR and east t o

Park S t ree t . Th is 20-inch (500 mm) feeder main w i l l be connected t o the e x i s t i n g

20-inch (500 mm) feeder main on Charles S t r e e t and w i l l a l so cont inue n o r t h along

Park S t r e e t t o Maple S t ree t , eas t on Maple S t r e e t t o Ormond S t ree t , n o r t h on

Ormond S t r e e t t o Parkdale Avenue and then east t o t h e r e s e r v o i r and pumping s t a t i o n

a t C a l i f o r n i a Avenue. Th is feeder main system w i 11 be requ i red t o feed t h e proposed

i n d u s t r i a l area i n the west s i d e o f Zone 1,to st rengthen the supply t o t h e eastern

p a r t o f Zone I and t o augment the feed t o Zone 11. I t i s proposed t o b u i l d t h e main

i n stages as requ i red , south from Parkdale Avenue.

Because o f t h e age and s i z e o f some o f t h e l o c a l d i s t r i b u t i o n mains, some improvements

are requ i red t o prov ide s u f f i c i e n t f i r e f l o w p r o t e c t i o n . These proposed improvements

a re shown on the Master P lan as l o c a l improvements and a re discussed f u r t h e r i n t h i s

s e c t i o n under System Improvements.

Other recommended improvements f o r Pressure Zone I inc lude a 12-inch (300 mm) feeder

main a long F i r s t Avenue from t h e e x i s t i n g 10-inch (250 mm) on King S t ree t , n o r t h t o

t h e Booster Pumping S t a t i o n , which i s requ i red t o st rengthen t h e supply t o the Booster

S t a t i o n , as w e l l as t h e consumers a long Highway No. 2 eas t o f t h e City boundary.

The proposed 12 - i nch (300 mm) feeder main along Broadway Avenue from North Augusta

Road t o F i r s t Avenue and the.n n o r t h a long F i r s t Avenue t o Reynolds Dr ive, i s r e -

qu i red t o supply the proposed i n d u s t r i a l area i n t h i s v i c i n i t y as w e l l as t o

st rengthen supp l ies t o the nor theast . It cou ld a l s o be a v a i l a b l e f o r any f u t u r e supply t o E l izabethtown Township and t h e proposed E l evated Tank re located.

Pressure Zone I 1

The e x i s t i n g d i s t r i b u t i o n system nor th o f Highway No. 401 can be e a s i l y i so l a ted

i n t o a second pressure zone. This w i l l i nvo lve c l os i ng valves on the 10-inch

(250 mm) watermain on Ormond S t ree t and the 12-inch (300 mm) watermain from

Ferguson Dr ive t o Parkdale Avenue i n the v i c i n i t y o f Highway No. 401, as ind icated

on the Master Plan. A l l of the area nor th of Highway No. 401 would then be suppl ied

through the 20-inch (500 mm) feeder main on North Augusta Dr ive and the proposed

20-inch (500 mm) feeder main along Ormond S t ree t i n t o the Parkdale Reservoir Pumping

Stat ion. A new s t a t i o n w i l l be requ i red t o supply Zone I1 as we l l as a 20-inch

(500 mm) connection t o the e x i s t i n g Zone I 1 system.

The primary improvement proposed f o r Zone I 1 i s a 20-inch (500 mni) feeder main from

the reservo i r , west across the Canadian P a c i f i c Railway, north,adjacent t o the r a i l - way r ight-of-way t o the e x i s t i n g 12-inch (300 mm) feeder main on Laur ie r Boulevard

and west approximately 400 feet (1 22 m) . This feeder main w i l l eventua l ly continue

nor th as a 16-inch (400 mm) main throuqh the proposed Bridlewood subdiv is ion t o

Centennial Road, then as a 16-inch (BOO mm) east t o C a l i f o r n i a Avenue and as a

12-inch (300 mm) west t o Kensington Parkway. This system w i l l be requ i red t o

strengthen the supply t o the i n d u s t r i a l area i n the northeast, as we l l as t o supply

the res i den t i a l area t o the northwest.

The southern sect ion o f the i n d u s t r i a l area i n the east p a r t o f the zone w i l l be

served by 12-inch (300 mm) feeder mains as shown on the Master Plan whi 1 e the north-

ern sect ion w i l l be served by twinning the e x i s t i n g 12-inch (300 mm) main on

Ca l i fo rn ia Avenue nor th o f Lau r i e r Boulevard and a 16-inch (400 mm) feeder main

nor th t o Centennial Road.

SYSTEM STORAGE

As s ta ted e a r l i e r , s u f f i c i e n t quan t i t i e s of water should be stored w i t h i n the system

t o augment the Water Plant dur ing peak f low o r emergency condi t ions. General guide-

l i n e s fo r system storage are one f i f t h t o one s i x t h of the t o t a l maximum day demand

for balancing storage plus one ha l f of the average day demand fo r emergency supply.

The present s torage a v a i l a b l e i n t h e water d i s t r i b u t i o n system i s as fo l l ows :

1 . Parkdale Avenue Reservoi r - 2.0 mg (9.09 ML)

2. Pe r th S t r e e t Elevated Tank - 0.5 mg (2.27 ML)

3. Water P u r i f i c a t i o n P l a n t Reservoi r - 0.75 mg (3.41 ML )

3.25 mg (14.77 ML)

The computer ana lys i s o f t h e system,proposed f o r f u l l development,indicated t h a t

t h e h y d r a u l i c grade l i n e i n t h e v i c i n i t y o f t h e Elevated Tank on Per th S t r e e t w i l l

be 10 t o 15 f e e t (3 t o 5 m) above t h e h igh water l e v e l o f t h e tank ( e l e v a t i o n 450)

(1 37 m) d u r i n g per iods o f peak demand. Th is Elevated Tank was const ruc ted over

twenty years ago and was l o c a t e d s t r a t e g i c a l l y f o r t h e p red ic ted growth and develop-

ment a t t h a t t ime. Since t h a t t ime, however, t h e water works i n t a k e has been

re loca ted t o t h e west s i d e o f t h e City. When development and consumption increases

n o r t h o f Highway No. 401, the new l a r g e r feeder main proposed f o r Zone I w i l l de-

crease t h e f r i c t i o n losses t o t h e tank and du r ing peak demand per iods, w i l l

increase t h e h y d r a u l i c grade l i n e a t t h e tank above the t o p water l e v e l . Under

t h i s cond i t i on , and w i t h peak demand operat ion, t he e levated tank must be i s o l a t e d .

P rov i s ion was made, a t t h e t ime t h e Parkdale Avenue Reservoi r was constructed, f o r

t he tank t o be i s o l a t e d by means o f a remote c o n t r o l i n s t a l l e d on t h e s h u t - o f f

va lve. When t h e va l ve i s closed, t h e tank i s n o t a v a i l a b l e t o prov ide storage

under emergency demands. Th is cou ld be remedied t o some ex tent , by i n s t a l l i n g an

a1 t i t u d e va lve w i t h a by-pass check va l ve which would a1 low t h e tank t o f u n c t i o n

au tomat i ca l l y as requ i red . It i s doub t fu l , however, i f t h i s i n s t a l l a t i o n would

prov ide s u f f i c i e n t a d d i t i o n a l improvement t o be worth w h i l e a t t h i s t ime.

As average d a i l y demands increase w i t h growth o f t h e City, t h e e f fec t i veness o f t h e

e x i s t i n g Elevated Tank i n i t s p resent l o c a t i o n , t o adequately balance the system op-

e ra t i on , w i l l be reduced and the frequency o f i s o l a t i o n requ i red w i l l be increased.

Under t h i s cond i t i on , cons ide ra t i on should be g iven t o r e l o c a t i n g t h e Elevated Tank

t o a new s i t e . The p r e f e r r e d l o c a t i o n w i l l be i n t h e eas t end o f t h e City, as i n -

d i ca ted on t h e Master Plan, t o an area designated as Open Space, n o r t h o f Broadway

Avenue and between F i r s t Avenue and Oxford Avenue. Since t h e c o s t o f r e l o c a t i n g an

e x i s t i n g tank approximates t h e c o s t of a new tank, i t may be d e s i r a b l e t o consider a

tank o f l a rge r s i ze a t the new l o c a t i o n t o more e f f e c t i v e l y balance d a i l y

f l uc tua t i ons i n demands. This matter, however, should be invest igated f u r t h e r

and i n more d e t a i l a t the t ime such a move i s required.

As can be seen, the on ly e x i s t i n g water storage ava i lab le i n the system i s the

2 mg (9.09 ML) Parkdale Avenue Reservoir, plus, t o a 1 im i ted extent, the 0.5 mg

(2.27 ML) Elevated Tank and the 0.75 mg (3.41 ML) P lan t Reservoir f o r a t o t a l o f

about 3.25 mg (14.77 ML). The recommended storage required fo r the present de-

velopment i s approximately 2.6 mg (11.82 ML). More storage i s no t an immediate

concern f o r t h i s reason, as we l l as the f a c t t h a t the Water P u r i f i c a t i o n P lan t

has the capabil i t i e s t o produce, pump and d i s t r i b u t e more than the present average

of t he maximum day demand o f 5 mgd (22.73 ML/d) i f required.

The e x i s t i n g Parkdale Avenue Reservoir was constructed t o provide f o r extension

t o 4 mg (18.18 ML) and the s i t e has room fo r t h i s expansion. It i s recommended

t h a t a 2 mg (9.09 ML) extension t o the e x i s t i n g rese rvo i r be undertaken when r e -

quired. An extension t o the pumping s t a t i o n o r a new pumping s t a t i o n f o r the new

Zone I 1 pumps i s a lso requ i red on t h i s s i t e .

ZONE I 1 BOOSTER PUMPING STATION

The Booster Pumping S ta t ion proposed f o r Zone I 1 could be a separate s t r l ~ c t u r e

beside o r an extension of the e x i s t i n g pumping s t a t i o n on the Parkdale Avenue

s i t e and drawing from the reservo i r . The e x i s t i n g pumping s t a t i o n w i l l continue

t o supply Zone I.

The Zone I 1 pumping s t a t i o n w i l l have an i n i t i a l capaci ty of 5 mgd (22.7 ML) an

u l t ima te capaci ty o f 10 mgd (45.46 ML) and an output Hydraul i c Grade L ine o f

520 f e e t (1 58 m) .

a SYSTEM IMPROVEMENTS

As s ta ted i n Sect ion 4, the l a t e s t review o f the f i r e p ro tec t i on c a p a b i l i t i e s o f

the supply system, showed some def 'ciencies. The proposed. improvements described

above f o r both Zone I and 11, w i l l he lp t o improve these condi t ions. However, the

o l d e r areas o f t h e City w i l l r equ i r e add i t i ona l improvements t o e l im ina te these de-

f i c i e n c i e s because o f t he l a r g e number o f 4-inch (100 mm) d i s t r i b u t i o n mains w i t h

hydrants and because the capac i ty o f mains reduces w i t h age. A number o f new mains

have been shown on the Master ~l an i n t he o l de r areas o f the City t o strengthen the

sys tem .

'The Insure rs ' Advisory Organizat ion repor t , dated February 1, 1977, recommends t h a t

the minimum s i z e fo r mains used f o r hydrant supply should be 6-inch (150 mm) i n res-

i d e n t i a l areas and 8- inch (200 m) i n commercial areas and on dead end mains. I t i s

recommended t h a t a cont inu ing programme o f p a r a i l e l i ng o r rep1 a c i ng a1 1 4-inch

(100 mm) mains which have hydrant connections be undertaken as o ther improvements

a re done i n t h a t area, unless hydrant t e s t i n g ind ica tes adequate f l ow and pres-

sure from the main under f i r e f l ow condi t ions. This may be obtained i n some areas

w i t h jud ic ious reinforcement o f t he system. Dup l i ca t ion o f e x i s t i n g mains by i n -

s t a l l i n g a new main on the s t r e e t w i t h t he hydrant connection and leav ing t he o l d

main w i t h the serv ice connections can o f t e n be advantageous i n improving system

f lows and pressures.

The c a p a b i l i t y o f watermains t o convey water depends on the mater ia l , diameter

and f r i c t i o n c o e f f i c i e n t o f the p ipe and the ava i l ab le grad ient of a l lowable head

loss per u n i t length. O f these parameters, the f r i c t i o n c o e f f i c i e n t o f un l ined ----'-- ___C-.___.___._ --..-I__

fe r rous pipe reduces w i t h the age o f pipe. The most commonly used formula t o -.,... - . - ' - '. . -. . . ..,. - ., ..

c a l cu la te the l oss o f head i n watermains i s the Hazen Wi l l iams empi r ica l formula

as fo l lows: codFiri,++ a C

where V = v e l o c i t y i n f e e t per second

c = a f a c t o r dependent on pipe roughness

r = hydrau l i c rad ius i n f e e t

S = hydrau l i c s lope i n feet per f o o t

According t o t h i s formula, f o r a g iven p ipe diameter and gradient , the capac i ty

o f the main va r ies d i r e c t l y w i t h the f r i c t i o n coe f f i c i en t . Reduction of the f r i c t i o n coe f f i c ien t can reduce the p ipe capac i ty t o as low as one- th i rd of the

o r i g i n a l value. 'The reduc t ion of the f r i c t i o n c o e f f i c i e n t i n fer rous pipes i s

due t o tubercu la t ion and rus t i ng . The reduc t ion of p ipe capac i t ies should be a major concern t o Water D i s t r i b u t i o n System managers.

Small mains a re genera l ly designed for l o c a l consumption and the f i r e f l ow i s

usua l l y several t imes greater than the f low f o r the peak r e s i d e n t i a l consumption

i n t he small mains. Therefore, the l oss of capac i ty o f these mains due t o age

w i l l no t become not iceable u n t i l the mains a re tes ted for f i r s flows.

The l o s t capac i ty o f fe r rous mains can be recovered by c leaning the main w i t h

foam swab o r by c lean ing and cement mortar l i n i n g o f t h e main. The foam swab

method gives a temporary recovery as new tubercu l a t i o n and cor ros ion w i 11 reduce

the capac i ty again i n t ime. The cement mortar 1 i n i n g i s a more expensive method,

b u t i t gives a permanent recovery o f l o s t capac i ty t o a t l e a s t 85 percent o f the

new capaci ty, as we l l as improving the safety o f the water from a hea l th standpoint .

A m a j o r i t y o f the watermains south o f Highway No. 401 a re cas t i r o n w i thou t cement,

mortar l i n i n g and more than 75% of these a re more than 25 years o ld . The c leaning

and/or l i n i n g o f a l l feeder mains 8- inch (200 mm) and l a r g e r would g rea t l y improve

the f i r e f l ow c a p a b i l i t i e s i n t he downtown area. It i s be1 ieved 1 i n i n g o f the

mains could a lso reduce the quan t i t y o f unaccounted-for water i n the system.

From comments made by the Pub1 i c U t i l i t i e s Commission personnel , i t i s under-

stood t h a t l i n i n g may be imprac t i ca l i n some o f t he o l de r mains, because o f the

type o f se rv ice connection used a t t h a t t ime. Th is should be inves t iga ted f u r t h e r .

SECTION 6

RECOMMENDATIONS AND PHASING

SECTION 6

RECOMMENDATIONS AND PHASING

GENERAL

I n t h e preceding sect ion, t h e proposed water d i s t r i b u t i o n system i s developed

and t h e method o f ope ra t i on i s discussed. A b r i e f summary o f t h e major

recommendations i s g iven below f o r convenience.

SUlJDJlARY OF RECOMMENDATIONS

It i s recommended t h a t :

a ) A second pressure zone f o r t h e area n o r t h o f Highway No. 401, as shown on

F igure No. 1 , w i t h a h y d r a u l i c grade 1 i n e of 520 f e e t (1 59 m) be c reated

a t an e a r l y date. A separate pumping s t a t i o n w i t h an u l t i m a t e capac i t y o f

10 mgd (45.46 ML) w i l l be requ i red on t h e Parkdale Avenue Reservoi r s i t e .

b ) The proposed mains be const ruc ted i n accordance w i t h a phased programme, as

o u t l i n e d i n t h e f o l l o w i n g paragraphs o r as necess i ta ted by consumption

demands and development .

c ) 'The Water P u r i f i c a t i o n P l a n t cont inue t o supply t h e average o f maximum day

q u a n t i t i e s , w i t h both maximum hour demand and emergency supply t o come

from storage loca ted i n t h e system.

d ) A 2 mg (9.09ML) Ground Storage Reservoi r extension be added t o t h e e x i s t i n g

Parkdale Avenue r e s e r v o i r a t such t ime as a d d i t i o n a l s torage i s requ i red .

The e x i s t i n g Zone I Pumping S t a t i o n w i l l be extended o r modi f ied a t t h a t

t ime. No a d d i t i o n a l land i s requ i red f o r the r e s e r v o i r extension.

e ) An Elevated Tank be loca ted on Broadway Avenue near Oxford Avenue, a t o r

above ground e l e v a t i o n 335 (102 m) so t h a t t h i s e levated tank can be more

f u l l y u t i l i z e d t o reduce pressure f luc tuat ions. A top water l e v e l (TWL) a t

approximately e leva t ion 470 (143 m) would be desired. This tank w i l l be re -

qu i red a t such t ime as system demands increase such as t o render the e x i s t i n g

tank i n e f f e c t i v e dur ing peak demand periods when i t i s required. A t such

t ime as the new tank i s required, there should be a de ta i led analysis t o

determine whether i t would be t o the Commission's advantage t o move the

e x i s t i n g 0.5 mg (2.27 ML) elevated tank t o t h i s s i t e , o r t o purchase a new

tank. Land should be s e t aside f o r t h i s Elevated Tank as soon as poss ib le

(0.5 acres (0.2 ha.)).

f ) The water consumption s t a t i s t i c s be reviewed annual ly as the populat ion

grows and compared t o forecasts i n t h i s r e p o r t f o r adjustment o f phasing

and scope of the proposed works.

g) The Master Plan he reviewed every f i v e years and a1 so when major development o r zoning changes a re contempl ated .

h) Local watermains no t included i n the system plan be s ized t o ca r ry the

requ i red f i r e f l ow i n accordance w i t h the "Water Supply f o r Pub1 i c F i r e

Protect ion, A Guide t o Recommended Pract ice - 1977", issued by the

Insurers ' Advisory Organization .

i ) A programme be continued o f rep lac ing and r e i n f o r c i n g the small mains and

improving and completing the loop system o f the l oca l d i s t r i b u t i o n mains,

espec ia l l y i n the o l de r areas, t o ensure, as f a r as possible, t h a t a l l f i r e

hydrants a re connected t o 6-inch diameter (150 mm) mains o r la rger .

j ) A l l new d u c t i l e i r o n pipes and f i t t i n g s be cement mortar 1 ined t o r e t a i n - good f r i c t i o n cha rac te r i s t i c s f o r a l ong t ime t o come.

k ) A programme be se t up t o inves t iga te the p o s s i b i l i t i e s o f c leaning by swab

o r c leaning and cement mortar 1 i n i n g o f a l l o l de r mains, 8-inches (200 mm)

i n diameter and l a rge r , i n the C i t y , t o decrease f r i c t i o n loss and increase

capaci ty o f the l oca l d i s t r i b u t i o n system. This w i l l increase the f i r e pro-

t e c t i o n c a p a b i l i t i e s i n these areas, as wel l as decrease the quan t i t y o f

unaccounted f o r water i n the system.

1) A programme o f leak de tec t ion and e l im ina t i on be continued i n an at tempt

t o i d e n t i f y , con t ro l and reduce the amount o f unaccounted-for water i n

the system. Because o f the l a r g e quan t i t y o f unaccounted-for water, such

a programme i s des i r ab le i n an at tempt t o reduce water product ion quan t i t -

ies , t o reduce operat ing and pumping costs and delay feeder main

const ruct ion.

PHASING OF WORKS

The requ i red c a p i t a l works t o serve the f u t u r e popu la t ion of 35,250 persons i n

the City o f B rockv i l l e , as we l l as 1500 persons ad jacent t o the southeast sec t i on

o f the City o f B r o c k v i l l e , i n the Township o f El izabethtown, a re shown on t he

Master Plan - F igure No. 1. Phasing o f these works i s based on a r e c o g n i t i o n o f

the present problem areas and p lann ing f o r f u t u r e development. Recommendations

f o r phasing a re based on water consumption and growth p ro j ec t i ons developed i n

t h i s repor t , as we l l as p lann ing and zoning in fo rmat ion provided by the City o f

B rockv i l l e . The works programme presented here w i l l ensure a system w i t h capac-

i t y t o produce and d i s t r i b u t e water a t the adopted ra tes i n a f e a s i b l e and

economical way.

The p r i o r i t i e s f o r most works w i l l be in f luenced by the p lann ing and l o c a t i o n of

new development and i t i s f o r t h i s reason, t h a t the recommendations should be

reviewed f requen t l y and when p lann ing and zoning changes a re considered.

The l i s t o f works below does n o t i nc l ude any mains smal ler than 12-inches (300 rm) i n diameter. These mains a r e considered l o c a l mains and should be e i t h e r the

developer 's responsi b i l i ty o r p a r t o f a l o c a l improvements prograrme.

The fo l lowing works a re considered t o be 1 s t p r i o r i t y and are requ i red before 1984:

- Creat ion o f a second pressure zone no r t h o f Highway No. 401

as shown on the Master Plan. This w i 11 requ i re a separate

Pumping Stat ion, drawing from the Parkdale Avenue Reservoir

and pumpi ng t o a Hydraul i c Grade L i ne o f 520 f e e t (1 58 m) . The Zone I1 Pumping S ta t i on w i l l have an i n i t i a l capac i ty o f

5 mgd (22.73 ML) and an u l t i m a t e capac i ty o f 10 mgd

(45.46 ML) $400,000.

I n con junct ion w i t h t he new Zone I1 Pumping Stat ion, a

20-inch (500 mm) diameter feeder main from the Zone I 1

Pumping S ta t i on t o C a l i f o r n i a Avenue approximately

500 f e e t (152 m ) long w i l l ' be required. $ 35,000.

The f o l l ow ing works a re considered t o be 2nd p r i o r i t y and w i l l be requ i red

sometime a f t e r 1983, bu t probably before 1989, depending on development.

- Construct ion o f a 20-inch diameter (500 mm) feeder main west

from the Zone I 1 Pumping S ta t i on across the CPR, no r t h t o

Laur ie r Boulevard and west t o the B r i d l ewood Subdivision,

approximately 4900 f e e t (1494 m) long. $345,000.

Construct ion o f a 20-inch diameter (500 mm) feeder main

east on Brock S t r e e t from the e x i s t i n g 16-inch diameter

(400 mm) feeder main on Perth S t r e e t t o Tunnel Avenue,

no r t h and east adjacent t o the ra i lway r ights-of-way t o

Park St reet , no r t h t o Maple Street , east t o Ormond S t r e e t

and then no r t h t o t he Parkdal e Avenue Reservoir, approx-

imate ly 9300 f e e t (2835 m). This feeder main w i l l a l so

be connected t o t h e 20-inch diameter (500 mm) feeder main

on Charles S t r e e t a t Park S t r e e t $700,000.

para1 l e l t o Parkdale Avenue from the 20-inch diameter

( 500 mm) feeder main a t t h e CPR, west t o Mil lwood Road,

approximately 1650 f e e t (503 m) . $ 70,000.

The f o l l ow ing works are considered t o be 3 rd p r i o r i t y and w i l l be requ i red sometime

a f t e r 1989, depending on demands f o r new development. These works may be

considered on an "as and when requ i red" basis.

- Expansion o f the Parkdale Avenue Ground Storage

Reservoir by 2 mg (9.09 ML)

- Construct ion of a 16-inch diameter (400 nun) feeder main

no r t h from the 20-inch diameter (500 mm) feeder main on

Laur ie r Boul evard through the B r i d l ewood Sub-divi s ion

t o Centennial Road, east t o C a l i f o r n i a Avenue and

south t o the e x i s t i n g 12-inch diameter (300 nun) feeder

main, approximately 7600 f e e t (2316 m) $425,000.

west on Centennial Road from the Bridlewood Subdiv is ion t o

Windsor Dr ive and then south t o the e x i s t i n g system,

- Construct ion o f a 12-inch dlameter (300 mm) feeder main,

east on Parkdale Avenue, from the e x i s t i n g 12-inch (300 mm)

feeder main t o North Augusta Road, nor th t o Laur ier

Boulevard and then west t o the e x i s t i n g 12-inch diameter

(300 mm) near Cal i f o r n i a Avenue approximately 8200

f e e t (2499 m)

Construct ion o f a 16-inch diameter feeder main on Cedar

St reet , no r th from the 24-inch (600 mm) feeder main on

Brock Street , across the CNR t o Hubbell, west and nor th

through the proposed i n d u s t r i a l area t o the extension o f

Central Avenue, approximately 3150 f e e t (960 m). Also

a 12- i nch diameter (300 mm) feeder main from t h i s proposed

16-inch. diameter (400 mm) west t o Centre S t ree t and east

t o Strowger Boulevard, approximately 3900 f e e t (1 189 m) $400,000.

- Construct ion o f a 24-inch diameter (600 m) feeder main

nor th on Rivers Avenue from the Water P u r i f i c a t i o n

P lan t t o King St reet , east t o Cedar St reet , no r th t o

Brock S t ree t and then east t o Perth Street ,

- Relocation o f e x i s t i n g 0.50 mg (2.27 ML) Elevated Tank

on Broadway Avenue east o f North Augusta Road, p lus

approximately 900 f e e t (274 m) o f 12-inch diameter

(300 mm) feeder main' $675,000.

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