,9(56,21 6(:(5 - tobi nussbaum · ottawa combined sewage storage tunnel - ewt tunnel outlet / rrc...

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101_E

102.dw

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Drawn by:

Name:

NOTES:

Date:

Designed by:

Date:

Signed:

Name:

R. DEMPSEY, P.ENG.

INFRASTRUCTURE SERVICES

Stamp (if applicable)

Signed:

Date:

Approved by:

Name:

Drawing Title:

Drawing No.: Rev. No.:

No. Revision Date

DEPARTMENT

W. R. NEWELL, P.ENG.

The Contractor shall verify and be responsible for all dimension. DO NOT scale

the drawing - any errors or omissions shall be reported to Stantec without delay.

The Copyrights to all design and drawings are the property of Stantec.

Reproduction or use for any purpose other than that authorized by Stantec is

forbidden.

Copyright Reserved

A. GRIGAITIS

J. CHANG

J. CHANG

OTTAWA COMBINED SEWAGE

STORAGE TUNNEL

Contract No.

ELECTRICAL

SITE 5

KEY PLAN

5-E101 A

RCI DIVERSION CHAMBER

CONTROL BUILDING

EWT OUTLET CHAMBER

3

0

0

0

Ø

C

S

S

T

E

W

T

1

8

0

0

Ø

D

I

V

E

R

S

I

O

N

S

E

W

E

R

IOS CONNECTION CHAMBER

2

1

0

0

Ø

I

O

S

E103

E102

AISSUED FOR 70% DESIGN

14.08.29

GENERAL NOTES:

1. ALL STRUCTURES ARE CLASS 1 DIVISION 1 HAZARDOUS LOCATION.

2. ALL ELECTRICAL TO CONFORM TO SECTION 18 AND ANNEX J OF THE ONTARIO

ELECTRICAL SAFETY CODE.

3. EXCEPT AS NOTED OTHERWISE ALL EXISTING EQUIPMENT TO REMAIN IS SHOWN

IN THIN SOLID LINES.

4. EXCEPT AS NOTED OTHERWISE ALL NEW CONSTRUCTION IS SHOWN IN THICK

SOLID LINES.

5. LOCATION OF ALL SERVICES AND EQUIPMENT IS APPROXIMATE. CONTRACTOR

IS RESPONSIBLE TO LOCATE ALL SERVICES PRIOR TO EXCAVATION AND

DEMOLITION AND SUPPORT THEIR FINDINGS TO THE CONTRACT

ADMINISTRATOR.

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102.dw

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Drawn by:

Name:

NOTES:

Date:

Designed by:

Date:

Signed:

Name:

R. DEMPSEY, P.ENG.



Signed:

Date:

Approved by:

Name:

Drawing Title:


No. Revision Date

DEPARTMENT






forbidden.

Copyright Reserved

A. GRIGAITIS

J. CHANG

J. CHANG


STORAGE TUNNEL

Contract No.

ELECTRICAL

SITE 5

SITE PLAN

5-E102 A

750 DIA CONC. VENTILATION DUCT FROM

IOS CHAMBER.

CAP OUTSIDE BIOFILTER FOR FUTURE

CONNECTION

900 DIA VENT STACK 4.0m HIGH

NEW CONTROLS BUILDING

IOS CONNECTION CHAMBER

EXISTING BIOFILTER BUILDING

3

0

0

0

D

I

A

.

C

S

S

T

E

W

T

EWT OUTLET CHAMBER

2400 DIA. CONNECTION

PIPE

1200 DIA CONC. VENTILATION

DUCT FROM EWT OUTLET CHAMBER

E

X

I

S

T

I

N

G

2

1

3

4

I

O

S

EXISTING

BIOFILTERS

6m WIDE PERMANENT

UTILITY EASEMENT

8m WIDE PERMANENT

UTILITY EASEMENT

OUTLINE OF PERMANENT

UTILITY EASEMENT (TYP.)

PROPERTY

LINE (TYP.)

E

X

I

S

T

I

N

G

2

1

3

4

I

O

S

EXISTING ACCESS ROAD

1

8

0

0

D

I

A

.

D

I

V

E

R

S

I

O

N

S

E

W

E

R

TBM ELECTRICAL

SUPPLY LOCATION

CONTINUED ON DRAWING 5-E103

COMMUNICATIONS MANHOLE

WITH FIBRE 2 X 50mm

ELECTRICAL MANHOLE 3 X 100m

+ 1 X 50m 4 #2AWG

FIRE HYDRANT

A ISSUED FOR 70% DESIGN14.08.29

40+260

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Drawn by:

Name:

NOTES:

Date:

Designed by:

Date:

Signed:

Name:

R. DEMPSEY, P.ENG.



Signed:

Date:

Approved by:

Name:

Drawing Title:


No. Revision Date

DEPARTMENT






forbidden.

Copyright Reserved

A. GRIGAITIS

J. CHANG

J. CHANG


STORAGE TUNNEL

Contract No.

ELECTRICAL

SITE 5

SITE PLAN (2)

5-E103 A

RRC DIVERSION CHAMBER

E303


K

GENERAL NOTES:







SOLID LINES.




ADMINISTRATOR. .

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Drawn by:

Name:

NOTES:

Date:

Designed by:

Date:

Signed:

Name:

R. DEMPSEY, P.ENG.



Signed:

Date:

Approved by:

Name:

Drawing Title:


No. Revision Date

DEPARTMENT






forbidden.

Copyright Reserved

A. GRIGAITIS

J. CHANG

J. CHANG


STORAGE TUNNEL

Contract No.

ELECTRICAL

SITE 5

EXISTING BIOFILTER

BUILDING LAYOUT

5-E104 A

DS

STAIRWAY LIGHT

(EXPLOSION-PROOF)

DOOR-SWITCH

EMERGENCY LIGHTS

IN VAULT

(EXPLOSION-PROOF)

VAULT VENT

DAMPER

ELECTRICAL

ROOM LIGHT

DS

DOOR-SWITCH

ELECTRICAL ROOM

EXHAUST LOUVRE

AND DAMPER

EXISTING UNDERGROUND SERVICE,

TELEPHONE LINE AND SHAFT LEVEL TRANSMITTER

POWER & SIGNAL CONDUITS

SERVICE AND LEVEL

TRANSMITTER POWER

CONDUITS

SPLITTER

4

CO/CH SENSOR

(NEAR CEILING MOUNTED)

TRANSFORMER

PANEL

BOARD

RECEPTACLE

SCALE 1:20

GROUND LEVEL LAYOUT

BUILDING EXTERIOR

LIGHT (WITH PHOTO CELL)

BUILDING EXTERIOR

LIGHT (WITH PHOTO CELL)

LIGHT

SWITCH

STAIRWAY LIGHT

(EXPLOSION-PROOF)

EX

IS

TIN

G

H/O/A SWITCH FOR VAULT EXHAUST FAN AND DAMPERS

H/O/A SWITCH FOR ELECTRICAL ROOM EXHAUST FAN

AND DAMPERS WITH THERMOSTAT CONTROL

ELECTRICAL ROOM HEATER THERMOSTAT

MAIN SERVICE DISCONNECT

SERVICE HYDRO METER

CP-02

ELECTRICAL ROOM

HEATER

100A DISCONNECT

FOR CP-02

30A DISCONNECT

FLOW METERS(4)

PH METERS(2)

OUTSIDE

TEMPERATURE

SENSOR

H2S SENSOR METER

CO/CH4 SENSOR METER

CP-01

FN-1 FN-2

PHASE LOSS RELAY

18" EXHAUST FAN

PLT-1


K

A

B

LP-A

A

LP-A

A

LP-A

A

LP-A

GENERAL NOTES:







SOLID LINES.




ADMINISTRATOR.

6. COORDINATE ALL WORK WITH THE CITY OF OTTAWA STAFF.

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Drawn by:

Name:

NOTES:

Date:

Designed by:

Date:

Signed:

Name:

R. DEMPSEY, P.ENG.



Signed:

Date:

Approved by:

Name:

Drawing Title:


No. Revision Date

DEPARTMENT






forbidden.

Copyright Reserved

A. GRIGAITIS

J. CHANG

J. CHANG


STORAGE TUNNEL

Contract No.

ELECTRICAL

SITE 5

NEW CONTROL

BUILDING LAYOUT

5-E105 A

MECHANICAL ROOM

DS-1

DP-1

DP

-2

LT-A

(ABOVE)

COMM.

PANEL 3

RPU PANEL

UPS-1 EBM-1

LCP-1

MBS-1

UPS-2

STATION

GND

BAR

ELECTRICAL ROOM

LP-A

MTS-1

COMM.

PANEL 2

COMM.

PANEL 1


14.08.29

CONTROL BUILDING LAYOUT

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301.dw

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Drawn by:

Name:

NOTES:

Date:

Designed by:

Date:

Signed:

Name:

R. DEMPSEY, P.ENG.



Signed:

Date:

Approved by:

Name:

Drawing Title:


No. Revision Date

DEPARTMENT






forbidden.

Copyright Reserved

A. GRIGAITIS

J. CHANG

J. CHANG


STORAGE TUNNEL

Contract No.

ELECTRICAL

SITE 5

SECTIONS

5-E301 A

2400 DIA CONNECTION PIPE

IOS CONNECTION & ACCESS

CHAMBER

1200 x 1200 ACCESS HATCH

25m LONG TAIL TUNNEL

2400 x 500 REMOVEABLE CONCRETE

COVER

1800 x 500 REMOVEABLE

ACCESS PANEL

3000 x 3000 REMOVEABLE

CONCRETE ACCESS PANEL

3000 DIA. SHAFT WITH

REMOVABLE TOP

3000 DIA. EWT OUTLET CHAMBER

IOS CONNECTION & ACCESS

CHAMBER

E

X

I

S

T

I

N

G

2

1

3

4

D

I

A

.

I

O

S

A

5

-

E

3

0

1

5

-

E

3

0

2

A

5

-

E

3

0

1

5

-

E

3

0

2

B

5-E

301

5-E

302

B

5

-

E

3

0

1

5

-

E

3

0

2

02

GV

02

GV

LIGHT FIXTURE (TYPICAL)

EP

EP

CONCRETE ENCASED

DUCTBANK

CONCRETE ENCASED

DUCTBANK

PLASTIBOND CONDUIT

CONCRETE ENCASED

DUCTBANK TO RRC

DIVERSION CHAMBER

JB-DIGITAL

JB-600V

JB-120V

JB-120V

JB-ULTRASONIC

JB-DIGITAL

W5T9

LI

W5T10

LI

JB-DIGITAL

JB-ANALOG

CONTINUED ON DRAWING 5-E103

JB-600V


14.08.29

EP

A

EP

EP

EP

A

EP

EP

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Drawn by:

Name:

NOTES:

Date:

Designed by:

Date:

Signed:

Name:

R. DEMPSEY, P.ENG.



Signed:

Date:

Approved by:

Name:

Drawing Title:


No. Revision Date

DEPARTMENT






forbidden.

Copyright Reserved

A. GRIGAITIS

J. CHANG

J. CHANG


STORAGE TUNNEL

Contract No.

ELECTRICAL

SITE 5

SECTIONS

5-E302 A

01

GV

03

GV

GRADE EL. 57.00 GRADE EL. 57.00

W5F2

HHF

W5F1

HIF

W5T10

LI

W5T9

LI

JB-600VJB-DIGITAL

(BEHIND)

JB-ANALOG (BEHIND)

JB-ULTRASONIC

LIGHT FIXTURE

JB-DIGITAL

FLOAT HANGER

FLOAT RING

JB-600V

JB-DIGITAL (BEHIND)

3#8 AWG TECK90 HL

20#14 AWG TECK90 HL

(BELOW THE PLATFORM)


SECTIONA

5-E302

SECTIONB

5-E302

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303.dw

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Drawn by:

Name:

NOTES:

Date:

Designed by:

Date:

Signed:

Name:

R. DEMPSEY, P.ENG.



Signed:

Date:

Approved by:

Name:

Drawing Title:


No. Revision Date

DEPARTMENT






forbidden.

Copyright Reserved

A. GRIGAITIS

J. CHANG

J. CHANG


STORAGE TUNNEL

Contract No.

ELECTRICAL

SITE 5

SECTIONS

5-E303 A

ACCESS SHAFT

18

00

D

IA

. D

IV

ER

SIO

N

SE

WE

R1

80

0 D

IA

. D

IV

ER

SIO

N

SE

WE

R

EL. 56.00

EL. 45.44

T/WEIR EL. 48.45

300 DIA SAN. SEWER

EL. 56.00

2134 DIA. RIDEAU RIVER

COLLECTOR OVERFLOW


COLLECTOR OVERFLOW


COLLECTOR OVERFLOW

ACCESS SHAFT

(BEHIND)

EL. 45.00

U/S CHAMBER ROOF

EL. 49.95

EL. 45.00

1800 DIA. DIVERSION SEWER

W3T8

LI

CONCRETE ENCASED DUCTBANK



JB-ULTRASONIC

W3T7

LI

JB-120V

EYS SEAL (TYPICAL)

JB-ULTRASONIC

(BEHIND)

W3T8

LI

W3T7

LI

RGS CONDUIT

RGS CONDUIT


JB-ULTRASONIC

(BEHIND)

RGS CONDUIT

RGS CONDUIT

W3T8

LI

W3T7

LI


SECTIONA

5-E303

SECTIONB

5-E303

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501.dw

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Drawn by:

Name:

NOTES:

Date:

Designed by:

Date:

Signed:

Name:

R. DEMPSEY, P.ENG.



Signed:

Date:

Approved by:

Name:

Drawing Title:


No. Revision Date

DEPARTMENT






forbidden.

Copyright Reserved

A. GRIGAITIS

J. CHANG

J. CHANG


STORAGE TUNNEL

Contract No.

ELECTRICAL

SITE 5

ELECTRICAL DETAILS

5-E501

A

TYPICAL DUCT BANK DETAIL (3x6 - 50mm PVC DUCTS)

A

25mm MIN. COVER TO REINFORCING BAR

75mm MIN. COVER TO DUCTS (TYP.)

SUPPLY AUTHORITY APPROVED

DUCT SPACER (A MINIMUM GAP OF

25mm BETWEEN DUCTS)

CONCRETE ENCASED DUCT BANK.

MIN. 20 MPA PEA STONE CONCRETE

REINFORCED BARS 10M REQUIRED IN EACH LOWER

CORNER AND BETWEEN ADJACENT DUCTS

50mm TYPE DB2 PVC DUCT CSA C22.2 No. 211.1 APPROVED

SLOPING OF TRENCH WALLS SHALL CONFORM TO

REQUIREMENTS SPECIFIED IN THE OCCUPATIONAL

HEALTH AND SAFETY ACT.

TYPICAL DUCT BANK DETAIL (1x6 - 50mm PVC DUCT)

C

OPENING TO BE SEALED WITH GROUT

AFTER CONDUITS HAVE BEEN INSTALLED.

PLASTIBOND 90° ELBOWS (OR

APPROVED EQUIVALENT)

CHAMBERS ARE

CLASS 1 DIVISION 1 HAZARDOUS

LOCATIONS

CONCRETE ENCASED

DB2 PVC CONDUITS

ALL DUCTBANKS TO

BE KEYED AND

DOWELED TO CHAMBER

WEATHERPROOFING BARRIER


B

PLASTIBOND CAP

(OR APPROVED EQUIVALENT)

OPENING TO BE SEALED WITH GROUT

AFTER CONDUITS HAVE BEEN INSTALLED.

PLASTIBOND CAP

(OR APPROVED EQUIVALENT)

CHAMBERS ARE

CLASS 1 DIVISION 1 HAZARDOUS

LOCATIONS

CONCRETE ENCASED

DB2 PVC CONDUITS

ALL DUCTBANKS TO

BE KEYED AND

DOWELED TO CHAMBER

WEATHERPROOFING MEMBRANE

TRANSITION DETAIL AT CHAMBER

E

TRANSITION DETAIL AT CHAMBER

F

UNDISTURBED NATIVE SOIL



600m

m M

IN

.



25mm BETWEEN DUCTS)









300mm COMPACTED SAND BACKFILL (IF NOT BELOW ROAD)

NATIVE BACKFILL MATERIAL, CLEAN FILL, OR GRANULAR

`B' COMPACT TO 95% PROCTOR

CABLE IDENTIFICATION HALF WAY BETWEEN DUCT AND

FINISHED GRADE.

ASPHALT, GRANULAR BASE, TOPSOIL OR CLEANFILL MATERIAL

FINISHED GRADE. REINSTATE EXISTING SURFACES TO

ORIGINAL CONDITION (SOD, ASPHALT OR LANDSCAPING)





25mm BETWEEN DUCTS)









TYPICAL DUCT BANK DETAIL (1x3 - 50mm PVC DUCT)

D




600m

m M

IN

.



25mm BETWEEN DUCTS)













FINISHED GRADE.






FINISHED GRADE.













762m

m M

IN

.





25mm BETWEEN DUCTS)


125mm



G



FINISHED GRADE.












762m

m M

IN

.





25mm BETWEEN DUCTS)



125mm


H



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Drawn by:

Name:

NOTES:

Date:

Designed by:

Date:

Signed:

Name:

R. DEMPSEY, P.ENG.



Signed:

Date:

Approved by:

Name:

Drawing Title:


No. Revision Date

DEPARTMENT






forbidden.

Copyright Reserved

A. GRIGAITIS

J. CHANG

J. CHANG


STORAGE TUNNEL

Contract No.

ELECTRICAL

SITE 5

5-E601 0

SINGLE LINE DIAGRAM

KEEFER BIOFILTER

EXISTING

125A, 600V, 3W, 60Hz, SPLITTER

#3AWG3C-

#2AWG4-

600V, 60Hz AC

FROM HYDRO

TRANSFORMER

100A

80A

100A

80A

MANUAL

STARTER

32A

LINE

REACTOR

VARIABLE

FREQUENCY

DEVICE

DC

LINE

REACTOR

22kW

PF-1

SEWER EXHAUST

FAN

- 91mmC

#6AWG3C-

100A

100A

30A

MANUAL

STARTER

18A

11.5kW

PF-2

SEWER EXHAUST

FAN

- 91mmC

#6AWG3C-

MANUAL

STARTER

1A

0.56kW

P-1

VAULT SUMP

PUMP No.1

- 91mmC

#10AWG3C-

MANUAL

STARTER

1A

0.56kW

P-2

VAULT SUMP

PUMP No.2

- 91mmC

#12AWG3C-

MANUAL

STARTER

14A

5kW

UH-1

EXPLOSION PROOF

UNIT HEATER

- 91mmC

#12AWG3C-

CP-02

___A

___V

___kAIC

2A

3 PHASE

DETECTOR

500VA

600-120VAC

MISC. PANEL

LOADS

30A

15A

#10AWG3C-

PLT-1

POWER & LIGHTING Tx

15kVA

600-208/120VAC

3Ø, 4W, 60Hz

WALL MOUNTED

30A

15A

SINGLE

PHASE

M

HYDRO OTTAWA

METER

PLT-1

125A

120/208VAC

24 CCT

_kAIC

LIGHTING

PANEL BOARD

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Drawn by:

Name:

NOTES:

Date:

Designed by:

Date:

Signed:

Name:

R. DEMPSEY, P.ENG.



Signed:

Date:

Approved by:

Name:

Drawing Title:


No. Revision Date

DEPARTMENT






forbidden.

Copyright Reserved

A. GRIGAITIS

J. CHANG

J. CHANG


STORAGE TUNNEL

Contract No.

ELECTRICAL

SITE 5

SINGLE LINE DIAGRAM

NEW CONTROL BUILDING

5-E602 A

200A

3P

(+)(-)

(+)(-)

STATION GROUND BAR

3M x 19mm DIA

COPPER GROUND ROD

(TYPICAL)

#6AWG BARE COPPER

___

30A

3P

SPD

___V

150kA

___

30A

3P

___

30A

3P

___

30A

3P

___

15A

3P

___

10A

3P

___

15A

3P

___

30A

3P

___

30A

3P

EF01

___HP

___A (FLA)

____

LT-A

15kVA

600V

120/208V

___%Z

____

H-1

5kW

LP-A

125A

120/208V

24CCT

10kAIC

_______

UNIT HEATER

SPARE

######

DP-1

225A

600V

22kAIC

MTS-1

200A-600V, 3PH,3W

DOUBLE THROW MANUAL TRANSFER SWITCH

MAIN DISCONNECT SWITCH DS-1

100A-3PH, 4W KING SIXE 7 JAW METER-BASE.

FINAL CONNECTIONS BY HYDRO OTTAWA

MOBILE GENERATOR

RECEPTACLE ASSEMBLY

60A,600V, 4W, 4P

HYDRO OTTAWA 600V 3PH 4W PRIMARY

#3/ØAWG3 + #8GRD IN 53mm RGS

#3/ØAWG4 + #8GRD

#3/ØAWG4 IN CONCRETE ENCASED 103mm PVC

3 + #8 GRD IN 53mm RGS

___

18kVA

600V

208V

___%Z

____

___

15kVA

208V

600V

___%Z

____

AUXILLIARY

BATTERY

CABINET

EXTERNAL

BATTERIES

UPS

INTERNAL

BATTERIES

CB2

BATTERY

CHARGER

MBS-1

PFC

RECTIFIER

INVERTER

MBS-3

MBS-2

UPS-2

15kVA, 208V, 3PH

EXTERNAL MAINTENANCE

BYPASS SWITCH MBS-1

MAIN INPUT

BYPASS INPUT

30A 30A

___

15A

3P

___

15A

3P

___

15A

3P

___

15A

3P

SPARESPARE

GV-01

5.4kW

___A (FLA)

____

GV-03

7.8kW

___A (FLA)

____

CLASS 1 ZONE 1 HAZARDOUS LOCATION

EWT OUTLET CHAMBER

######

DP-2

225A

600V

22kAIC

ODOUR CONTROL BUILDING

EF-1

___A

___/___V

__CCT

____kAIC


14.08.29

SPARE

#3/ØAWG3 + #8GRD

125A, 600V, 3W, 60Hz, SPLITTER

#3AWG3C-

#2AWG4-

100A

80A

100A

80A

MANUAL

STARTER

32A

LINE

REACTOR

VARIABLE

FREQUENCY

DEVICE

DC

LINE

REACTOR

22kW

PF-1

SEWER EXHAUST

FAN

- 91mmC

#6AWG3C-

100A

100A

30A

MANUAL

STARTER

18A

11.5kW

PF-2

SEWER EXHAUST

FAN

- 91mmC

#6AWG3C-

MANUAL

STARTER

1A

0.56kW

P-1

VAULT SUMP

PUMP No.1

- 91mmC

#10AWG3C-

MANUAL

STARTER

1A

0.56kW

P-2

VAULT SUMP

PUMP No.2

- 91mmC

#12AWG3C-

MANUAL

STARTER

14A

5kW

UH-1

EXPLOSION PROOF

UNIT HEATER

- 91mmC

#12AWG3C-

CP-02

___A

___V

___kAIC

2A

3 PHASE

DETECTOR

500VA

600-120VAC

MISC. PANEL

LOADS

30A

15A

#10AWG3C-

PLT-1

POWER & LIGHTING Tx

15kVA

600-208/120VAC

3Ø, 4W, 60Hz

WALL MOUNTED

30A

15A

SINGLE

PHASE

PLT-1

125A

120/208VAC

24 CCT

_kAIC

LIGHTING

PANEL BOARD

#12AWG3 + GRD 21mm RGS

#6AWG4 + GRD 41mm RGS

EXISTING KEEFER BIOFILTER

OTTAWA COMBINED SEWAGE STORAGE TUNNEL - EWT TUNNEL OUTLET / RRC DIVERSION

Appendix B - Review of Alternative Staging Areas for Site 5 March 13, 2015

- REVIEW OF ALTERNATIVE STAGING AREAS FOR Appendix BSITE 5

lh \\cd1218-f02\work_group\01-634\active\1634_01060_ottawa combined sewage storage tunnel\project_management\approvals\eee\site_5\rev_2\rpt_csst_site5_eee_rev2.docx B.1

Revision Record Revision Description Prepared By Checked By Approved By

Rev 0 Draft P.Pitre Dec 9

Technical Memorandum: Review of Alternative Staging Areas for Site 5

Ottawa Combined Sewer Storage Tunnel (CSST) City of Ottawa Contract No. ISD13-2033

Prepared for: City of Ottawa

Prepared by:

Stantec Consulting Ltd.

CH2M HILL

December 9, 2014

Sign-off Sheet

This document entitled Technical Memorandum: Review of Alternative Staging Areas for Site 5 was prepared by Stantec Consulting Ltd. and CH2M HILL for the account of the City of Ottawa. The material in it reflects Stantec’s and CH2M HILL’s best judgment in light of the information available to it at the time of preparation. Any use which a third party makes of this report, or any reliance on or decisions made based on it, are the responsibilities of such third parties. Stantec Consulting Ltd. and its sub-consultant CH2M HILL accept no responsibility for damages, if any, suffered by any third party as a result of decisions made or actions based on this report.

Prepared by (signature)

Pascal Pitre

Reviewed by (signature)

Adrien Comeau

TECHNICAL MEMORANDUM: REVIEW OF ALTERNATIVE STAGING AREAS FOR SITE 5

December 9, 2014

Table of Contents

1.0 INTRODUCTION ............................................................................................................. 1

2.0 STAGING AREA ALTERNATIVES ..................................................................................... 1 70% DESIGN STAGING AREA ........................................................................................................ 2 STAGING AREA - ALTERNATIVE 1 ................................................................................................. 2 STAGING AREA - ALTERNATIVE 2 ................................................................................................. 3

3.0 EVALUATION OF OPTIONS ............................................................................................ 3

4.0 SUMMARY & CONCLUSION .......................................................................................... 4

LIST OF TABLES Exhibit 1: Evaluation of Alternative Alignments ........................................................................ 3

cs w:\active\1634_01060_ottawa combined sewage storage tunnel\preliminary\deliverables\tms\site 5 alternatives_rrc diversion\csst_tm_site5stagingalt.docx i


December 9, 2014

1.0 Introduction

The purpose of this technical memorandum is to document a review of potential alternative staging areas in Stanley Park. On October 20, 2014, a site walkthrough was conducted with representatives from the NCC (Mathieu Brisson and Julie Mulligan), City Forestry and City Parks. The following major comments were received from the NCC during the site meeting:

• Mitigate impacts on the recently reforested area to the extent practical.

• Prioritize the protection of willows, maples (except Manitoba Maples) and pines.

• Do not eliminate the dog park area.

• Extend the staging area for the main shaft further south to protect the recently reforested area.

• Save the preferred trees identified during the site visit to the extent possible.

• Staging is permissible in the existing treed area around and northeast of the IOS Connection Chamber as this area would benefit from renewal.

Staging area alternatives were developed in an attempt to address these comments to the extent practical. These options were submitted to the NCC with a discussion email and request for comments on November 12, 2014. The NCC subsequently requested on November 20, that a technical memorandum be provided to formalize the submission of information and include a table of advantages and disadvantages.

2.0 Staging Area Alternatives

This section describes the staging area that was included in the 70% design submission and also describes two alternatives staging areas developed in an attempt to reflect some of the preferences identified by the NCC in order to save more of the reforestation area in the west. Note that the property boundaries and ownership are indicated on the appended drawings.

The three staging areas evaluated include the staging area layout as per the 70% design, alternative 1 (shifting south and east) and alternative 2 (encroaching into a portion of the dog park). Tunnel launch operations require significant space, particularly when pressurized face tunnel boring machines (TBM) and precast segments are being installed, which is the case for this project.

For all options, a portion of the Rideau River Eastern Pathway would be temporarily closed south of Queen Victoria Street. A temporary paved link would be constructed between the end of Queen Victoria Street and the Rideau River Eastern Pathway for continuing north along Stanley Park. The alternative to taking the paved path to Queen Victoria Street and Stanley Avenue would be for park users to take the granular surface pathway that follows the river’s edge to New Edinburgh Park.

cs w:\active\1634_01060_ottawa combined sewage storage tunnel\preliminary\deliverables\tms\site 5 alternatives_rrc diversion\csst_tm_site5stagingalt.docx 1


December 9, 2014

70% Design Staging Area

The tunnel launch construction staging area presented to the stakeholders as part of the 70% design is outlined in blue in Exhibit 1. It is approximately 0.6-0.7 hectare, straddling property owned by the City of Ottawa, the National Capital Commission (NCC) and the Ministry of Natural Resources and Forestry (MNRF). There are two separate staging areas for the work done in the park. The primary staging area to the south of the park (referred to as Site 5a) is for the CSST tunnel launch operation and the construction of the CSST outlet structures. This is where the CSST will terminate and flow into the existing Interceptor Outfall Sewer (IOS – the existing trunk sewer flowing to the sewage plant). The secondary staging area to the north (referred to as Site 5b) is for the launch of a smaller tunneling machine (micro-tunnel boring machine - MTBM) to construct a diversion sewer that will connect an existing outfall sewer on River Lane (Site 5c) to the CSST chamber in Stanley Park (Site 5a). There will be a shaft for the launch of this MTBM for construction purposes and, ultimately, there will be a permanent maintenance hole that will be constructed in the location of this temporary shaft.

The primary staging area (Site 5a) could be occupied for 18-24 months, which includes the site preparations, excavation of the shaft tunneling and construction of the chambers. The range in duration depends on the contractor’s proposed tunneling operation. However, it is expected that the north staging area (Site 5b) would be required for a much shorter period, in the range of 6-8 months. The length of tunneling to be advanced along the CSST alignment from this site is 2 km if Site 3c at Nicholas and Laurier is also used as a launch site, which is expected. Otherwise, a 4-km tunneling length would be advanced from Stanley Park, which would more than double the duration of the tunneling component of the works. For the diversion sewer, it is expected that there would be two separate launches from the same pit at Site 5b. One to tunnel from Site 5b to the CSST at Site 5a, and the second to tunnel from Site 5b to Site 5c at River Lane. The total length of the diversion sewer will be 265 m. The MTBM to be used for the diversion sewer advances in straight lines, while the main TBM to be used for the CSST can follow a curved alignment. The staging area as presented in the 70% design submission is illustrated on the appended drawing 5-L01 (blue outline).

Staging Area - Alternative 1

The intent of Alternative 1 is similar to that of the 70% design, except that it protects more of the recently reforested and capped area west of the tunnel launch shaft. As discussed on site, the staging outline is pushed further southeast, right up to a stand of mature trees and also north of the IOS connection chamber, where the trees are near the end of their lifespan. The east boundary of the staging area was identified in the field with the NCC where higher quality trees in better condition were observed. As recommended by the City and supported by the tunnel designers for better site efficiency, the two staging areas are proposed to be connected as illustrated. The staging area for Site 5b (north portion) and the link between the two would be reinstated after the 6-8 month construction period for the diversion sewer and chamber. The Alternative 1 staging area is illustrated on the appended drawing 5-L02 (red outline).



December 9, 2014

Staging Area - Alternative 2

The intent of Alternative 2 is to locate some of the staging in a portion of the dog park northwest of the surge tank behind the recent reforestation area, while still preserving part of the dog park. This option protects the reforestation/capping area to the greatest extent and has the advantage of configuring the best usable space for staging, as it is one continuous area. The Alternative 2 staging area is illustrated on the appended drawing 5-L03 (green outline). Not shown on this exhibit is the remaining portion of the dog park space west of the staging area (cut-off the image). As previously indicated, it is expected that the MTBM tunneling for the diversion sewer and the maintenance hole installation at Site 5b will take approximately 6-8 months. Therefore, the northern part of the staging area would only be required for that period, after which the hoarding would be relocated and the north portion would be reinstated.

Environmental Considerations Large portions of the NCC property and part of the City property in Stanley Park was capped due to the presence of constituents in surface soil at concentrations potentially posing unacceptable risk to human health. It is suspected that portions of Stanley Park may contain waste or landfill material. Fill material throughout the park is of variable composition and in some test locations was noted to contain brick, wood, concrete and organics. The alternative staging areas would reduce impacts on the capped areas.

3.0 Evaluation of Options Exhibit 1 presents advantages and disadvantages for the various staging areas considered.

Exhibit 1: Evaluation of Alternative Alignments

70% Design Staging Area

Advantages

• Least impact on large/mature trees.

• Least impact on the Rideau River Eastern Pathway.

• Least impact on usable park areas and dog park.

Disadvantages

• Greatest impact on newly planted trees.

• Greatest potential impact on capped contaminated areas.

• The two staging areas are not connected

Alternative Staging Area 1 (moved southeast and northeast)

Advantages

• Approximately 60-70% less impact on newly planted and capped soil areas.

• More “preferred” trees are protected (maples, pines, willows, etc).

• Dog park is little impacted.

• Two staging areas are connected.

Disadvantages

• Still impacting portions of the newly planted and capped soil areas.

• Greater impact on mature treed areas.

• Stanley Park bisected into two areas for a period of 6-8 months by the interconnection of the two staging areas.



December 9, 2014

Alternative Staging Area 2 (part of dog park )

Advantages

• Least impact on newly planted and capped soil area (most newly planted trees are protected).

• Less impact on mature treed areas than Alternative 1.

• More “preferred” trees are protected (maples, pines, willows, etc).

• One single staging area – most efficient.

Disadvantages

• A portion of the dog park is used for the staging area.

• Stanley Park bisected into two areas for a period of 6-8 months by the combined staging area.

4.0 Summary & Conclusion

The above evaluation compares two alternative staging area plans to the plan that was presented as part of the 70% design submission. The alternative options reduce the impacts on the newly planted and capped soil areas and protect all but one of the “preferred” trees identified during the October 20 walkthrough with the NCC. Only one maple tree located at the diversion sewer shaft cannot be protected (tree # 38 on the appended maps). Alternative 2 (in green) is the City’s preferred option for constructability, efficiency of space and safety. It presents one continuous staging site and has the least impact on newly planted and capped soil areas, while the only mature trees impacted are ones deemed by the NCC to benefit from renewal.


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4344

45

46

47

48

51

CITY OF

OTTAWA

MNR

NCC

MNR

NCC

NCC

NCC

#85

#233

#234

#232

#231

#230

#229

#227

#235

#228

#224

#226

#225

#222

#221

#220

#219 #218

#217

#216

#215

#213

#223

#236

#237

#79

#80

#84

#82

#81

#83

239

#300

#301

#302

#303

#304

#305

#306

#307

#308

6b

6c

#238

EXISTING TREES

PLANTID BOTANICAL NAME COMMON NAME

SIZE(DBH)* CONDITION REMARKS

1 ACER NEGUNDO, FRAXINUS MANITOBA MAPLE, ASH

VARIES

MAPLE GOOD,

ASH DEAD

TO BE PROTECTED.

2 QUERCUS ALBA WHITE OAK 25CM GOOD TO BE PROTECTED.

3 ACER SACCHARINUM SILVER MAPLE 20CM GOOD TO BE PROTECTED.

4 PICEA PUNGENS BLUE SPRUCE 15CM GOOD TO BE PROTECTED.


6 REFORESTATION BED MIX VARIES GOOD 692M2 TO BE REMOVED.

6b REFORESTATION BED MIX VARIES GOOD 2403M2 TO BE REMOVED.

6c REFORESTATION BED MIX VARIES GOOD 397M2 TO BE REMOVED.

7

THUJA OCCIDENTALIS, ACER NEGUNDO,

ULMUS

BLACK CEDAR, MANITOBA

MAPLE, ELM

VARIES GOOD TO BE PROTECTED.

8 THUJA OCCIDENTALIS BLACK CEDAR CLUMP GOOD TO BE PROTECTED.

9 ACER NEGUNDO MANITOBA MAPLE VARIES GOOD TO BE PROTECTED.

10 POPULUS DELTOIDES POPLAR VARIES FAIR TO BE PROTECTED.

11 POPULUS DELTOIDES, ACER NEGUNDO POPLAR, MANITOBA MAPLE


12

MIX OF VINES, WEEDS,

SHRUBS(UNIDENTIFIED)

CLUMP FAIR TO BE REMOVED.

13 ACER NEGUNDO MANITOBA MAPLE VARIES GOOD TO BE REMOVED.

14 THUJA OCCIDENTALIS BLACK CEDAR CLUMP GOOD TO BE REMOVED.

15 SYRINGA VULGARIS COMMON LILAC 15CM

FAIR(POORLY

PRUNED)

TO BE REMOVED.

16 SYRINGA VULGARIS COMMON LILAC 15CM GOOD TO BE REMOVED.

17 ULMUS ELM 15CM GOOD TO BE PROTECTED.

18 PICEA PUNGENS BLUE SPRUCE 15CM GOOD TO BE REMOVED.


20 ACER NEGUNDO MANITOBA MAPLE 25CM GOOD TO BE REMOVED.




24 ACER SACCHARINUM SILVER MAPLE 40MM GOOD TO BE REMOVED.


26 ACER SACCHARUM SUGAR MAPLE 40MM GOOD TO BE REMOVED.





31

AMELANCHIER CANADENSIS(3) SERVICEBERRY(3)

40MM GOOD TO BE REMOVED.

32

POPULUS, ACER NEGUNDO, ACER

SACCHARUM, THUJA OCCIDENTALIS

POPLAR, MANITOBA MAPLE,

SUGAR MAPLE, CEDAR

CLUMP GOOD

PORTION TO BE

REMOVED.

33 SALIX WILLOW 150CM GOOD TO BE PROTECTED.



36 JUGLANS NIGRA WALNUT 30CM GOOD TO BE PROTECTED.


38 ACER RUBRUM RED MAPLE 70CM GOOD TO BE REMOVED.

39

GLEDITSIA TRIACANTHOS VAR. INERMIS

'SHADEMASTER'

SHADEMASTER

HONEYLOCUST

30CM GOOD TO BE REMOVED.

40


'SHADEMASTER'

SHADEMASTER

HONEYLOCUST

30CM GOOD TO BE PROTECTED.

41


'SHADEMASTER'

SHADEMASTER

HONEYLOCUST


42 SALIX WILLOW 30CM GOOD TO BE REMOVED.



45 PICEA GLAUCA WHITE SPRUCE 50CM GOOD TO BE REMOVED.

46 FRAXINUS ASH 35CM DEAD TO BE REMOVED.

47 ACER NEGUNDO MANITOBA MAPLE 35CM GOOD TO BE PROTECTED.

48 ACER PLATANOIDES NORWAY MAPLE 60CM GOOD TO BE PROTECTED.

79 POPULUS DELTOIDES EASTERN COTTONWOOD 68CM GOOD TO BE PROTECTED.




83 SALIX ALBA WHITE WILLOW 1X90, 1X60CM

GOOD TO BE PROTECTED.

84 SALIX NIGRA BLACK WILLOW 43CM GOOD TO BE PROTECTED.

85 ACER GINNALA AMUR MAPLE 4-15CM FAIR TO BE PROTECTED.

213 ACER NEGUNDO MANITOBA MAPLE 2X15CM POOR TO BE PROTECTED.

215 WILLOW SPP. SALIX SPP. 4X45CM POOR TO BE PROTECTED.

216 ACER NEGUNDO MANITOBA MAPLE 20, 50CM


217 ACER NEGUNDO MANITOBA MAPLE 1X28, 5X20CM



219 ACER SACCHARUM SUGAR MAPLE 30CM FAIR TO BE PROTECTED.




222 ACER NEGUNDO MANITOBA MAPLE 2X15CM GOOD TO BE PROTECTED.

223 ACER NEGUNDO MANITOBA MAPLE 26CM GOOD/FAIR TO BE PROTECTED.

224 POPULUS DELTOIDES EASTERN COTTONWOOD 1X40, 1X50CM

FAIR TO BE PROTECTED.






230 POPULUS DELTOIDES EASTERN COTTONWOOD 2X100CM FAIR TO BE REMOVED.

231 POPULUS DELTOIDES EASTERN COTTONWOOD 120CM GOOD TO BE REMOVED.


233 QUERCUS ROBUR FASTIGIATA PYRAMIDAL ENGLISH OAK 20CM POOR TO BE PROTECTED.

234 ACER GINNALA AMUR MAPLE 6X18CM GOOD TO BE PROTECTED.



237 ACER SACCHARUM SUGAR MAPLE 47CM GOOD TO BE PROTECTED.

238 THUJA OCCIDENTALIS WHITE CEDAR HEDGE GOOD TO BE PROTECTED.

239 PINUS STROBUS WHITE PINE 59 GOOD TO BE REMOVED.

300 ACER SACCHARUM SUGAR MAPLE TO BE PROTECTED.





305 PINUS STROBUS WHITE PINE TO BE PROTECTED.




Drawn by:

Name:

NOTES:

Date:

Designed by:

Date:

Signed:

Name:

R. DEMPSEY, P.ENG.



Signed:

Date:

Approved by:

Name:

Drawing Title:


Scale

No.Revision Date

DEPARTMENT






forbidden.

Copyright Reserved


STORAGE TUNNEL

Contract No.

SITE 5

STAGING AREA

CURRENT OPTION

SITE ANALYSIS

5-L01 B

A ISSUED FOR PRELIMINARY DESIGN

B ISSUED FOR 70% DESIGN 14.08.29

C. Gaudet

B. DeVries

C. Gaudet

1:500

SITE 5

STAGING AREA 5A

TOTAL AREA = 11 257m²

MNR AREA

STAGING AREA = 4 087m²

ACCESS AREA = 0

NCC AREA

STAGING AREA = 3597m²

ACCESS AREA = 0

CITY OF OTTAWA AREA


ACCESS AREA = 0

CAPPING AREA W/

REFORESTATION BED AREA = 3 095m²

REFORESTATION BED AREA = 397m²

SITE 5A

STAGING

AREA

SITE 5B

STAGING

AREA

DIVERSION

SEWER TUNNEL

LAUNCH SHAFT

1

2

3

4

5

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4344

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CITY OF

OTTAWA

MNR

NCC

MNR

NCC

NCC

NCC

#85

#233

#234

#232

#231

#230

#229

#227

#235

#228

#224

#226

#225

#222

#221

#220

#219 #218

#217

#216

#215

#213

#223

#236

#237

#79

#80

#84

#82

#81

#83

239

#300

#301

#302

#303

#304

#305

#306

#307

#308

6b

6c

#238

EXISTING TREES




VARIES

MAPLE GOOD,

ASH DEAD

TO BE PROTECTED.








7


ULMUS


MAPLE, ELM







12







FAIR(POORLY

PRUNED)

TO BE REMOVED.


17 ULMUS ELM 15CM GOOD TO BE PROTECTED.








25 ACER SACCHARINUM SILVER MAPLE 40MM GOOD TO BE PROTECTED.

26 ACER SACCHARUM SUGAR MAPLE 40MM GOOD TO BE PROTECTED.





31


40MM GOOD TO BE PROTECTED.

32




SUGAR MAPLE, CEDAR

CLUMP GOOD

PORTION TO BE

REMOVED.






38 ACER RUBRUM RED MAPLE 70CM GOOD TO BE PROTECTED.

39


'SHADEMASTER'

SHADEMASTER

HONEYLOCUST


40


'SHADEMASTER'

SHADEMASTER

HONEYLOCUST


41


'SHADEMASTER'

SHADEMASTER

HONEYLOCUST















84 SALIX NIGRA BLACK WILLOW 43CM GOOD TO BE PROTECTED.

85 ACER GINNALA AMUR MAPLE 4-15CM FAIR TO BE PROTECTED.

213 ACER NEGUNDO MANITOBA MAPLE 2X15CM POOR TO BE PROTECTED.

215 WILLOW SPP. SALIX SPP. 4X45CM POOR TO BE PROTECTED.




GOOD TO BE REMOVED.


219 ACER SACCHARUM SUGAR MAPLE 30CM FAIR TO BE REMOVED.



GOOD TO BE REMOVED.

222 ACER NEGUNDO MANITOBA MAPLE 2X15CM GOOD TO BE REMOVED.

223 ACER NEGUNDO MANITOBA MAPLE 26CM GOOD/FAIR TO BE REMOVED.


FAIR TO BE REMOVED.






230 POPULUS DELTOIDES EASTERN COTTONWOOD 2X100CM FAIR TO BE REMOVED.



233 QUERCUS ROBUR FASTIGIATA PYRAMIDAL ENGLISH OAK 20CM POOR TO BE REMOVED.

234 ACER GINNALA AMUR MAPLE 6X18CM GOOD TO BE PROTECTED.



237 ACER SACCHARUM SUGAR MAPLE 47CM GOOD TO BE REMOVED.

238 THUJA OCCIDENTALIS WHITE CEDAR HEDGE GOOD TO BE REMOVED.

239 PINUS STROBUS WHITE PINE 59 GOOD TO BE PROTECTED.










Drawn by:

Name:

NOTES:

Date:

Designed by:

Date:

Signed:

Name:

R. DEMPSEY, P.ENG.



Signed:

Date:

Approved by:

Name:

Drawing Title:


Scale

No.Revision Date

DEPARTMENT






forbidden.

Copyright Reserved


STORAGE TUNNEL

Contract No.

SITE 5

STAGING AREA ALT 1

SITE ANALYSIS

5-L02 B

A ISSUED FOR PRELIMINARY DESIGN

B ISSUED FOR 70% DESIGN 14.08.29

C. Gaudet

C. Gaudet

1:500

SITE 5

STAGING AREA 5A


MNR AREA


ACCESS AREA = 0

NCC AREA


ACCESS AREA = 634m²

CITY OF OTTAWA AREA


ACCESS AREA = 2 381m²

CAPPING AREA W/

REFORESTATION BED AREA = 1 023m²


STAGING AREA 5B

TOTAL AREA = 1728m²

MNR AREA

STAGING AREA = 0

ACCESS AREA = 0

NCC AREA


ACCESS AREA = 0

CITY OF OTTAWA AREA

STAGING AREA = 0

ACCESS AREA = 0

SITE 5A

STAGING

AREA

SITE 5B

STAGING

AREA

DIVERSION

SEWER TUNNEL

LAUNCH SHAFT

SITE 5A

STAGING AREA

INTERCEPTOR

OUTFALL SEWER

EW

T S

IT

E 5A

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4

5

6

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11

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4344

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46

47

48

51

52

CITY OF

OTTAWA

MNR

NCC

MNR

NCC

NCC

MNR

NCC

#85

#233

#234

#232

#231

#230

#229

#227

#235

#228

#224

#226

#225

#222

#221

#220

#219 #218

#217

#216

#215

#213

#223

#236

#237

#79

#80

#84

#82

#81

#83

239

#300

#301

#302

#303

#304

#305

#306

#307

#308

6b

6c

#238

Drawn by:

Name:

NOTES:

Date:

Designed by:

Date:

Signed:

Name:

R. DEMPSEY, P.ENG.



Signed:

Date:

Approved by:

Name:

Drawing Title:


Scale

No. Revision Date

DEPARTMENT






forbidden.

Copyright Reserved


STORAGE TUNNEL

Contract No.

SITE 5b

STAGING AREA ALT 2

SITE ANALYSIS

5-L03 A

A ISSUED FOR 70% DESIGN 14.08.29

C. Gaudet

C. Gaudet

1:500

EXISTING TREES




VARIES

MAPLE GOOD,

ASH DEAD

TO BE PROTECTED.








7


ULMUS


MAPLE, ELM







12







FAIR(POORLY

PRUNED)

TO BE REMOVED.


17 ULMUS ELM 15CM GOOD TO BE REMOVED.














31


40MM GOOD TO BE REMOVED.

32




SUGAR MAPLE, CEDAR

CLUMP GOOD

PORTION TO BE

REMOVED.






38 ACER RUBRUM RED MAPLE 70CM GOOD TO BE REMOVED.

39


'SHADEMASTER'

SHADEMASTER

HONEYLOCUST


40


'SHADEMASTER'

SHADEMASTER

HONEYLOCUST


41


'SHADEMASTER'

SHADEMASTER

HONEYLOCUST









79 POPULUS DELTOIDES EASTERN COTTONWOOD 68CM GOOD





GOOD

84 SALIX NIGRA BLACK WILLOW 43CM GOOD

85 ACER GINNALA AMUR MAPLE 4-15CM FAIR

213 ACER NEGUNDO MANITOBA MAPLE 2X15CM POOR

215 WILLOW SPP. SALIX SPP. 4X45CM POOR


GOOD


GOOD

218 ACER NEGUNDO MANITOBA MAPLE 18CM GOOD

219 ACER SACCHARUM SUGAR MAPLE 30CM FAIR



GOOD

222 ACER NEGUNDO MANITOBA MAPLE 2X15CM GOOD

223 ACER NEGUNDO MANITOBA MAPLE 26CM GOOD/FAIR


FAIR






230 POPULUS DELTOIDES EASTERN COTTONWOOD 2X100CM FAIR



233 QUERCUS ROBUR FASTIGIATA PYRAMIDAL ENGLISH OAK 20CM POOR

234 ACER GINNALA AMUR MAPLE 6X18CM GOOD



237 ACER SACCHARUM SUGAR MAPLE 47CM GOOD

238 THUJA OCCIDENTALIS WHITE CEDAR HEDGE GOOD

239 PINUS STROBUS WHITE PINE 59 GOOD

300 ACER SACCHARUM SUGAR MAPLE





305 PINUS STROBUS WHITE PINE




SITE 5

STAGING AREA 5A


MNR AREA


ACCESS AREA = 0

NCC AREA


ACCESS AREA = 554m²

CITY OF OTTAWA AREA


ACCESS AREA = 2 381m²

CAPPING AREA W/



COMBINED SITE

5A & 5B

STAGING AREA

DIVERSION

SEWER TUNNEL

LAUNCH SHAFT

INTERCEPTOR

OUTFALL SEWER


Appendix C - Correspondence with Transport Canada March 13, 2015

- CORRESPONDENCE WITH TRANSPORT Appendix CCANADA

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1

Hardwick, Loretta

From: NPP ONT - PPN ONT <[email protected]>Sent: Monday, December 15, 2014 12:54 PMTo: Hardwick, LorettaSubject: FW: CSST Attachments: Outfalls and Water Intakes.pdf; Notice of Work Form - April 2014.pdf

Good Morning

Construction of the tunnel under the bed of the Rideau River does not require Notice to the Minister or review of the work considering that the method of construction does not require placement or use of any work in the waterway. If there is to be any work (temporary or permanent), a Notice of Work is to be submitted for review. I have attached the mandatory Notice of Works form for your convenience.

In the case of the outfall, it is possible that it may be considered a Minor, or “designated work”. Please assess your outfall project against the attached info sheet. If the project can meet all the terms and conditions on this sheet, it can be considered minor and Notice to the Minister is not required. If the project cannot meet all of the terms and conditions that are outlined on the form, a Notice of Works is required for review prior to the commencement of any construction.

Please contact us if you have any further questions.

Regards

Navigation Protection Program / Programme de la protection de la navigation TransportCanada / Transports Canada Programs / Programmes Ontario Region / Région de l'Ontario 1-519-383-1863 100 Front Street South / 100 rue Front S., Sarnia, Ontario, N7T 2M4 *[email protected] <mailto: [email protected]>

From: Hardwick, Loretta [mailto:[email protected]] Sent: Tuesday, December 09, 2014 4:03 PM To: NPP ONT - PPN ONT Cc: Clarke, Samantha Subject: CSST

2

Stantec is currently completing the design of the Combined Sewage Storage Tunnel (CSST) project for the City of Ottawa. The CSST project includes a tunnel that will pass underneath the Rideau River (approx. 9 to 10 m below the riverbed) and underneath the Rideau Canal (approx. 16 m below the canal bed). The CSST project also includes extension of an existing outfall to the Ottawa River. We have regular (monthly) progress meetings in Ottawa on this project and would like to extend the invitation to a representative of Transport Canada. Can you advise who I should contact at Transport Canada? Also, we would like to obtain information on the requirements for an outfall with respect to the Navigation Protection Program. Depending on the design of the outfall, as I understand, it may or may not be considered a minor work. However, even if it is a minor work, there may be conditions or requirements of Transport Canada to maintain navigation safety. Does Transport Canada have any guidance on what those conditions may be? Any direction you can provide would be appreciated. Thank you, Loretta Hardwick, M.Sc. Associate, Environmental Services Stantec 400 - 1331 Clyde Avenue Ottawa ON K2C 3G4 Phone: (613) 738-6056 Cell: (613) 447-8766 Fax: (613) 722-2799 [email protected]

Celebrating 60 years of community, creativity, and client relationships.

The content of this email is the confidential property of Stantec and should not be copied, modified, retransmitted, or used for any purpose except with Stantec's written authorization. If you are not the intended recipient, please delete all copies and notify us immediately.

Please consider the environment before printing this email.


Appendix D - Correspondence with First Nations and Aboriginal Groups March 13, 2015

- CORRESPONDENCE WITH FIRST NATIONS AND Appendix DABORIGINAL GROUPS

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1

Hardwick, Loretta

From: Rukavina, Martin (MAA) [[email protected]]Sent: Tuesday, February 23, 2010 12:57 PMTo: Hardwick, LorettaCc: [email protected]; Comeau, AdrienSubject: RE: Ottawa CSO Storage EA and Functional Design Project (MAA3985DRC-2010-133)

Hi Loretta, That was the only group I would have suggested. Thank you, Martin

From: Hardwick, Loretta [mailto:[email protected]] Sent: February 23, 2010 11:05 AM To: Rukavina, Martin (MAA) Cc: [email protected]; Comeau, Adrien Subject: RE: Ottawa CSO Storage EA and Functional Design Project (MAA3985DRC-2010-133) Good morning Mr. Rukavina, Information on the project and a request for input will be sent to the Algonquins of Ontario through their consultation office in Pembroke. Do you recommend other Aboriginal groups that should also be notified? Regards, Loretta Hardwick Associate, Senior Environmental Scientist Stantec Ph: (613) 738-6056 Fx: (613) 738-0721 Cell: (613) 447-8766 [email protected] stantec.com The content of this email is the confidential property of Stantec and should not be copied, modified, retransmitted, or used for any purpose except with Stantec's written authorization. If you are not the intended recipient, please delete all copies and notify us immediately.

Please consider the environment before printing this email. From: Rukavina, Martin (MAA) [mailto:[email protected]] Sent: Monday, February 22, 2010 9:42 AM To: [email protected]; Hardwick, Loretta Subject: Ottawa CSO Storage EA and Functional Design Project (MAA3985DRC-2010-133)

Good Morning:

The Ministry of Aboriginal Affairs received your letter sent on February 11, 2010 to Ms. Heather Levecque. As part of our responsibilities under the Government Review Team, can you please identify what Aboriginal groups have been notified about this project? Your prompt reply would be greatly appreciated.

Thank you,

--

2

Martin Rukavina – Advisor, Relationships Aboriginal and Ministry Relationships Branch I Aboriginal Relations and Ministry Partnerships Division I Ministry of Aboriginal Affairs

Tel: (416) 327-9594 I Fax: (416) 325-1066 I E-mail: [email protected] I Web: http://www.ontario.ca/maa

Combined Sewage Storage Tunnel Project Information

Ottawa River Action Plan Project No. 3

June 2012 1

1 Background The Combined Sewage Storage Tunnel (CSST) Project is one of 17 projects of the Ottawa River Action Plan. The City’s combined sewer areas drain to the Interceptor-Outfall Sewer (IOS). Combined sewers collect and transport sanitary wastewater and stormwater runoff in a single pipe. In dry weather, an interceptor sewer, such as the IOS, captures all of the wastewater flow from the combined sewers and carries it to the wastewater treatment plant. A regulator is a control structure that normally directs sewage from a combined sewer to an interceptor; in wet weather it directs excess combined sewage to a local water body in order to prevent overloading of the interceptor and/or treatment plant and basement flooding. This is called a combined sewer overflow (CSO). Thousands of cities such as London, Paris, New York, Montreal, Toronto, Kingston etc., have combined sewers and CSOs. Frequent and large CSOs to the River have been identified at three locations: the West End Regulators (Cave Creek and Booth) in the Lebreton Flats area, the Rideau Canal Regulator and the Keefer Regulator. These regulators and the Interceptor-Outfall Sewer (in red) are shown below.

Extensive public consultations held in late 2009 during development of the Ottawa River Action Plan showed that there was a strong desire to limit the



June 2012 2

frequency of overflows beyond the provincial target of 2 overflow events during the swimming season of the so-called “Design Year”. The public did not expect complete elimination of CSOs, which is considered unaffordable, but showed strong support to go beyond the provincial target of two overflow events to zero overflow events during the swimming season of the “Design Year”. In February of 2010, City Council instructed staff to achieve this target, with the understanding that there would continue to be overflows during rainfall events that are larger than those of the “Design Year”. Through development of the Ottawa River Action Plan and the Combined Sewer Area Pollution Prevention and Control Plan, it was determined that the best option to achieve this control target would be to build one or more facilities to store excess combined sewage that would otherwise overflow to the River. When wet weather subsides, the stored sewage would then be returned to the sewer system and from there to the City’s wastewater treatment plant for treatment.

2 Environmental Assessment and Functional Design This project is being planned as a Schedule C project in accordance with the requirements of the Municipal Class Environmental Assessment, 2007. The Municipal Class EA is divided into five Phases.

2.1 Environmental Assessment In early 2010, Stantec Consulting Ltd. was hired to complete the Environmental Assessment and Functional Design for the CSST Project. The project is currently nearing the end of Phase 3 (evaluating alternative designs for the recommended preferred alternative solution) and beginning to draft the Environmental Study Report (Phase 4) of the Class EA process, and the functional design is almost complete. The EA phases are summarized schematically on the next page, along with dates when the CSST project reached key milestones.

2.2 Public and Stakeholder Consultation Public consultation took place twice during Phase 2 at the following project milestones, in accordance with the Class EA process: March/April 2010: presentation of a long list of alternatives, the evaluation

criteria and the evaluation methodology. This long list included underground tank options, tunnel options, combinations of tanks and tunnels and in-River Storage.

June 2010: presentation of the short list of alternative solutions being considered, the evaluation of the alternative solutions and introduction to the recommended preferred alternative solution.



June 2012 3

These milestones were also the subject of communications (emails, and/or phone calls, and/or meetings) with potentially affected stakeholders and other interested parties. One opportunity for public consultation has been planned during Phase 3, which is the current point of the project as previously mentioned. A public open house is being planned for June 26th 2012 at City Hall and will include presentation of alternative design concepts for the recommended preferred alternative solution. Public comments are being collected throughout the study including open houses in accordance with the Class EA Act, and become part of the public record (with the exception of personal information).

2.3 Recommended Preferred Alternative Solution The recommended preferred alternative solution consists of three major components to be implemented in two phases: Phase 1:

o a Core Tunnel, linking the West End Regulators in Lebreton Flats, the Rideau Canal Regulator and the Keefer Regulator

o a North-South tunnel along Kent Street, interconnected to the Core Tunnel at or near Slater

Municipal Class EA Process

Phase 1

Identify Problem or Opportunity

Phase 2

Identify and Evaluate

AlternativeSolutions

Consult Review Agencies and

Public

Select Preferred Solution

Phase 3

Identify and Evaluate

Alternative Design Concepts

Consult Review Agencies and

Public

Select Preferred Design

Phase 4

Environmental Study Report

Notice of Completion

June 2010

June 2012

Target: Q2/3 2012

Late 2009as part of ORAP



June 2012 4

Phase 2: o an East Tunnel from Keefer Regulator to the Robert O. Pickard

Environmental Centre Together, the two Phase 1 tunnels provide sufficient storage to achieve the mandated CSO control targets. They total over 6km and have an inner diameter of 2.4 to 3.0m. The alignment of both tunnels is shown in the figure at the end of this document. Preliminary planning-level cost estimate for Phase 1: $115 to $150 Million. The implementation schedule is discussed below under “Next Steps”. During rare, extreme weather, the North-South tunnel component can also be used as a major flood-relief pipe to channel excessive runoff away from flood-prone areas to the Ottawa River. Phase 2 will provide even more storage and therefore further improve CSO control, and will also greatly enhance system redundancy and operational flexibility. This element cannot be constructed with the currently available funding; it will be constructed when funding is available.

2.4 Functional Design The functional design is almost complete. Its purpose is to define the form, function, size, preliminary location and planning-level cost estimates of major components of the twin-tunnel solution, such as:

the tunnels entry/exit points and staging areas for tunnel boring machine(s) flow diversion and structures and regulators flow diversion sewers odour control facilities modifications to existing sewers and regulators high-level operating strategy and integration with the City’s Real-Time

Control system

Population intensification and climate change have been considered in the functional design, in addition to the usual factors such as known geotechnical constraints, conflicts with other utilities and buildings, conflicts with LRT, constructability, etc.



June 2012 5

3 Next Steps Subject to prompt and successful completion of discussions between the City and Federal Departments regarding the use of Federal lands for some components of the project, the project’s Environmental Assessment and Functional Design could be completed by late summer 2012. Estimates of the time needed to complete the next steps of the process are presented below:

Preliminary & Detailed Design .......................................................... Q1/2013 Tendering and Contract Award ......................................................... Q3/2014 Construction ..................................................................................... Q1/2015 Commissioning ................................................................................. Q3/2017

The timeline above is to be read with caution given the complexity and scope of this project and the inevitable uncertainties that are to be expected at this stage.



June 2012 6


Appendix E - Geotechnical Profile March 13, 2015

- GEOTECHNICAL PROFILEAppendix E

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Appendix F - Critical Conditions Determination and Emergency Actions March 13, 2015

- CRITICAL CONDITIONS DETERMINATION AND Appendix FEMERGENCY ACTIONS

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