west carleton environmental centre landfill footprint...

Waste Management of Canada Corporation

West Carleton Environmental Centre Landfill Footprint Expansion

ALTERNATIVE METHODS REPORT – ASSESSMENT OF LANDFILL FOOTPRINT ALTERNATIVES

DRAFT FOR DISCUSSION AND COMMENT

Prepared by:

AECOM Canada Ltd.

Project Number:

60191228-1

Date:

November, 2011

Draft Assessment of Landfill Footprint Alternatives

West Carleton Environmental Centre

T a b l e o f C o n t e n t s Page

1. Introduction ......................................................................................................... 1

1.1 Background .......................................................................................................... 1

2. Identification of the Envelopes for Potential Development ............................ 3

2.1 Land Ownership ................................................................................................... 5 2.2 Existing Natural Environment Features ................................................................ 5 2.3 Land Use Constraints .......................................................................................... 6

2.3.1 City of Ottawa Official Plan ....................................................................... 6 2.3.2 City of Ottawa Comprehensive Zoning By-Law (2008-250) ...................... 9

2.4 Perimeter Buffer Zones ...................................................................................... 10 2.5 Landfill Footprint Envelopes ............................................................................... 10

3. Generation and Evaluation of the Alternative Methods ................................ 11

3.1 Overview ............................................................................................................ 11 3.2 Generation of Landfill Footprint Options ............................................................. 11

3.2.1 Conceptual Design of Landfill Footprint Options ..................................... 14 3.2.2 Description of the Landfill Footprint Options ........................................... 22 3.2.3 Landfill Footprint Option 1 ...................................................................... 23 3.2.4 Landfill Footprint Option 2 ...................................................................... 25 3.2.5 Landfill Footprint Option 3 ...................................................................... 26 3.2.6 Landfill Footprint Option 4 ...................................................................... 28

3.3 Summary of Landfill Footprint Options ............................................................... 29 3.4 Assessment of the Alternative Methods ............................................................. 31

4. Net Effects Analysis ......................................................................................... 38

4.1 Landfill Footprint Option #1 ................................................................................ 38 4.1.1 Net Effects Analysis ............................................................................... 38




5. Comparative Evaluation Results ..................................................................... 82

5.1 Overall Landfill Footprint Option Rankings ....................................................... 100

6. Summary ......................................................................................................... 101



List of Figures

Figure 1.1 Study Area ........................................................................................................... 2

Figure 2.1 Study Area Constraints ........................................................................................ 4

Figure 2.2 Official Plan Designations .................................................................................... 6

Figure 2.3 Carp Road Corridor Community Design Plan ....................................................... 7

Figure 2.4 City of Ottawa Comprehensive Zoning By-Law (2008-250) .................................. 9

Figure 3.1 Landfill Footprint Option #1 ................................................................................ 12




Figure 3.5 Cross-Section of Landfill Footprint Option #1 & #2 ............................................. 24

Figure 3.6 Cross-Section of Landfill Footprint Option #3 & #4 ............................................. 27

Figure 3.7 Alternative Methods Process.............................................................................. 32

Figure 4.1 Option #1 Impact to Tributaries .......................................................................... 44

Figure 4.2 Option #4 Impact to Tributaries .......................................................................... 76

List of Tables

Table 2.1 Official Plan Designations and Permitted Uses .................................................... 8

Table 3.1 Comparison of Footprint Options ....................................................................... 29

Table 5.1 Comparative Evaluation Results ........................................................................ 83

Attachments

Attachment A - Conceptual Design Report

Attachment B - Landfill Footprint Net Effects Table

Attachment C - Comparative Evaluation Technical Memo’s



1

1. Introduction

1.1 Background

Waste Management of Canada Corporation (WM) is preparing an Environmental Assessment

(EA) for a proposed undertaking consisting of the provision of a new landfill footprint at the

existing Ottawa Waste Management Facility (Ottawa WMF). WM has undertaken and received

approval of a Terms of Reference (ToR) for identification and assessment of a new landfill

footprint as part of the WCEC. From the analysis presented in Supporting Document #2 –

Alternatives To the Undertaking, of the approved ToR, WM identified Alternative 3 – Close the

current landfill and establish new landfill disposal capacity at the West Carleton

Environmental Centre (WCEC) as the preferred Alternative To the Undertaking. Identification

and evaluation of “Alternative Methods” or different ways that the project can be developed is a

key element of the EA process. For example, the proposed new landfill footprint for residual

waste could be constructed in different locations and configurations (size, height, etc.) at the

WCEC.

The new landfill footprint will be one component of the proposed West Carleton Environmental

Centre (WCEC). The approved ToR identified a study area, within which alternative methods

would be identified for consideration in the EA. The study area is bounded on the southeast

and southwest sides by Highway 417; on the northeast by Carp Road; and on the northwest by

Richardson Side Road. The study area is bisected by William Mooney Road to the southwest of

the existing Ottawa WMF (Figure 1.1). The existing Ottawa WMF landfill is located on Lots 3

and 4, Concession 3 in the former Township of Huntley, formerly in the Township of West

Carleton, now the City of Ottawa near the intersection of Carp Road and Highway 417. The

lands within the study area are contiguous with the existing Ottawa WMF, owned and operated

by WM.

The purpose of this document is to present the generation and evaluation of alternative landfill

footprints and provide the rationale for the selection of the preferred landfill footprint.

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Figure 1.1

Study AreaNovember 2011

Project 60191228

Waste Management of Canada CorporationWest Carleton Environmental Centre

This drawing has been prepared for the use of AECOM’s client and may not be used, reproduced or relied upon by third parties,except as agreed by AECOM and its client, as required by law or for use by governmental reviewing agencies. AECOM accepts no responsibility, and denies any liability whatsoever, to any partythat modifies this drawing without AECOM’s express written consent.

Basemapping from Ontario Ministry of Natural ResourcesOrthophotography: 2005, 2008 and 2010

0 500 1,000250

m

Legend

Current Ottawa WMF OperationsOn-site Study Area



3

2. Identification of the Envelopes for Potential Development

During the ToR phase, preliminary development envelopes were identified within the study area

within which landfill footprint alternatives and other non-landfill components of the WCEC could

be located. Two distinct development envelopes, located North and West of the existing landfill,

were included in the ToR, which was approved in November 2010.

During Open House #1 of the EA, these footprint development envelopes were confirmed and

presented to the public.

WM considered the following constraints when determining appropriate landfill footprint

envelopes:

WM ownership of land or option to purchase land;

Existing natural environment features;

Land use constraints; and,

Perimeter buffer zones.

Figure 2.1 shows the application of these site-specific factors within the study area. The

following sections describe the application of the site-specific factors within the development

envelopes.

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Figure 2.1

Study Area ConstraintsNovember 2011

Project 60191228

Waste Management of Canada CorporationWest Carleton Environmental Centre

This drawing has been prepared for the use of AECOM’s client and may not be used, reproduced or relied upon by third parties,except as agreed by AECOM and its client, as required by law or for use by governmental reviewing agencies. AECOM accepts no responsibility, and denies any liability whatsoever, to any partythat modifies this drawing without AECOM’s express written consent.

Basemapping from Ontario Ministry of Natural ResourcesOrthophotography: 2010

0 200 400100

m



5

2.1 Land Ownership

WM owns or has options to purchase a large portion of the lands within the study area. These

lands are shaded in grey on Figure 2.1, and include land to the northeast and southwest

immediately adjacent to the existing Ottawa WMF (hereafter referred to as the “north envelope”

and “west envelope” respectively). The land within the study area that WM does not own or

have the option to purchase is shaded in red on Figure 2.1.

2.2 Existing Natural Environment Features

A preliminary inventory of existing natural heritage features within the study area was carried

out to determine any land that should be excluded from potential development. The desktop

inventory of existing natural features was completed using interpretation of aerial photography,

existing natural environment information, and other baseline studies.

Of note, the Goulbourn Wetland Complex is a provincially significant wetland complex in a the

south-western portion of the Study Area. This wetland is protected under the provincial Planning

Act and the Provincial Policy Statement from any development or site alteration. In addition, the

City of Ottawa Official Plan (2003, Consolidated 2007) requires that any development within 120

m of the boundary of a designated wetland undertake an Environmental Impact Statement

(EIS).

Existing databases show that there are butternut trees (Juglans cinerea) within the study area.

Butternut is listed as an endangered species under the provincial Endangered Species Act and

the federal Species at Risk Act.

A number of ditches and channels exist within the Study Area. Under the federal Fisheries Act,

no project may create a “harmful alteration, disruption or destruction” (also known as a HADD)

of fish habitat, unless authorized by the Minister. Further in relation to watercourses, under the

generic regulations of the Conservation Authorities Act, incompatible development is normally

prohibited within 15 m of any floodplain, wetland, river valley, or meander belt. To the north of

the existing Ottawa WMF, there are two on-line (i.e. connected to other tributaries) wetlands.

These features are regulated by the Mississippi Valley Conservation Authority.



6

2.3 Land Use Constraints

2.3.1 City of Ottawa Official Plan

The existing Ottawa WMF lands are designated Solid Waste Disposal Site, Sand and Gravel

Resource Area, and Carp Road Corridor Rural Employment Area in the City of Ottawa Official

Plan (2003, Consolidated 2007) (see Figure 2.2). Within the Carp Road Corridor Community

Design Plan, these lands are designated as Heavy Industrial Area and Solid Waste Disposal

Site (see Figure 2.3).

The north development envelope is designated as Carp Road Corridor Rural Employment Area.

Within the Carp Road Corridor Community Design Plan, this land is designated as Light

Industrial Area.

Most of the west development

envelope is designated

General Rural Area, and the

Goulbourn Wetland Complex

is designated Significant

Wetlands. Uses permitted

within these designations are

outlined in Table 2.1.

Figure 2.2 Official Plan Designations



7

Figure 2.3 Carp Road Corridor Community Design Plan



8

Table 2.1 Official Plan Designations and Permitted Uses

Designation Permitted Uses

Existing

Ottawa WMF

Carp Road Rural Employment Area Rural industrial and commercial uses.

Heavy Industrial Area (Carp Road

Corridor Community Design Plan)

Heavy industrial uses involving the manufacturing of

products from local primary materials, quarry, abattoirs,

salvage yards, sawmills.

Sand and Gravel Resource Area Pits and wayside pits and related uses such as portable

asphalt plants.

Solid Waste Disposal Site Solid waste disposal sites.

North

Development

Envelope

Carp Road Rural Employment Area Rural industrial and commercial uses.

Light Industrial Area (Carp Road

Corridor Community Design Plan)

May include light manufacturing plants, distribution, recycling

and assembly plants, warehouses, service and repair shops,

research, design and testing facilities, storage uses,

transportation depots, contractor or construction related

uses, and compatible public and institutional uses.

West

Development

Envelope

General Rural Area Without a Zoning By-law Amendment:

Agricultural uses, forestry and conservation, and natural

resource management activities; Residential uses; Animal

boarding, breeding, and training facilities, including stables;

Bed and breakfast establishments; Open space; Cemeteries.

With a Zoning By-law Amendment:

New industrial and commercial uses, such as farm equipment

and supply centres, machine and truck repair shops, building

products yards, landscape contractors, and nurseries; Uses

that are noxious, such as salvage or recycling yards,

composting or transfer facilities, concrete plants, the treatment

of aggregate products, and abattoirs; New recreational

commercial and non-profit uses, such as golf courses, driving

ranges, mini putt operations, campgrounds, outdoor theme

parks, and sportsfields; New sand and gravel pits and

underground mining for any mineral resources; Other new

non-residential uses which are in keeping with the rural

character or those uses that meet the needs of the traveling

public, such as a restaurant, gas station, motel, and retail (up

to 1,000 m2 gross leasable area); New institutional uses such

as places of worship and schools; Country lot subdivision.

Significant Wetlands No development or site alteration is permitted except for

open air recreation; scientific, educational, or conservation

uses associated with the environmental features; existing

agricultural operations; forestry. Single detached dwelling

and accessory building, subject to conditions.



9

2.3.2 City of Ottawa Comprehensive Zoning By-Law (2008-250)

The lands within the study area have ten different zonings under the City of Ottawa

Comprehensive Zoning By-law (2008-250). These zonings are shown in Figure 2.4, and are

described in the following subsections for the existing Ottawa WMF lands, the west

development envelope, and the north development envelope.

Figure 2.4 City of Ottawa Comprehensive Zoning By-Law (2008-250)

Both landfill envelopes would require an amendment to the Official Plan and zoning by-law for

the landfill footprint component of the WCEC.



10

2.4 Perimeter Buffer Zones

If the EA is approved, WM must ensure the landfill area is completely surrounded by a buffer

area. A proposed buffer from property lines of 100 m is shown in Figure 2.1.

2.5 Landfill Footprint Envelopes

As previously mentioned, two distinct development envelopes within the study area in relation to

the existing Ottawa WMF were identified during the ToR stage. These envelopes are referred

to by their proximity to the Ottawa WMF, namely to the west of William Mooney Road and to the

north of the existing Ottawa WMF.

As a result of the constraints review, the north and west envelopes were identified in the ToR as

the areas within which the “Alternative Methods for Carrying out the Undertaking” would be

analysed in the EA. In the ToR, WM proposed to complete a comparative evaluation with

respect to the landfill footprint envelopes and then generate landfill footprint options within the

preferred envelope:

“Once the selection of the preferred landfill envelope has been determined in the

EA, alternatives will be identified during the EA within the preferred envelope.”

(Approved ToR, Section 6.5, pp. 35).

After reviewing the initial information collected and reviewed as part of identifying the study area

constraints/ potential landfill envelopes, WM determined that both envelopes were suitable for

identifying potential landfill footprints. Locating a potential landfill footprint is possible for both

envelopes, as no discernible differences between the two envelopes that would prevent

development of a landfill footprint were identified. Therefore, WM embarked on generating

potential landfill footprint options within each of the envelopes. This approach was presented at

Open House #1 and Workshop #1 of the EA. Further discussion on the generation of landfill

footprint options is provided in Section 3 of this report.

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