Appendix 4-11 Terrain Mapping

Home , Geology of Ontario

CA PDF Page 1 of 36

Energy East Pipeline Ltd. Energy East Project Consolidated Application Volume 4: Pipeline Design

Appendix 4-11

Terrain Mapping

April 2016

CA PDF Page 2 of 36

Energy East Pipeline Ltd. Energy East Project Consolidated Application Volume 4: Pipeline Design

Appendix 4-11

Terrain Mapping Report – Ontario

April 2016

CA PDF Page 3 of 36

Document Title: Energy East Pipeline – New Build Portion, Rock Quantity and Acid Rock Study Terrain Mapping Report – Ontario Document Number: EE4930-GAL-C-RP-1002

Revision Number: 0

Golder Associates Ltd. 32 Steacie Drive Kanata, Ontario Canada, K2K 2A9 Telephone: 613-592-9600

Rev Rev Date Reason for Contractor Contractor Contractor Number yyyy-mm-dd Issue Originator Reviewer Approver

0 2015-08-21 Use Dennis O’Leary Les Fuller Dennis O’Leary

Page i of iii Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 4 of 36

Table of Contents

1.0 INTRODUCTION ...... 1

2.0 BACKGROUND ...... 3

2.1 Physiographic Setting and Bedrock Geology ...... 3

2.2 Surficial Geology ...... 5

3.0 METHODS ...... 9

3.1 Study Area...... 9

3.2 Collection and Review of Background Data ...... 9

3.3 Mapping and Interpretation ...... 9

3.4 Mapping Standards ...... 10

3.5 Quality Control ...... 11

4.0 RESULTS ...... 12

4.1 Depth to Bedrock ...... 12

4.2 Surficial Materials / Soil Types ...... 13

4.3 Accuracy of Mapping ...... 13

5.0 RECOMMENDATIONS ...... 14

6.0 LIMITATIONS ...... 15

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page ii of iii 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 5 of 36

TABLES Table 1 – Alphabetical Listing of Bedrock Groups, Formations and Rock Types Crossed by Project, Rev H (Armstrong and Dodge 2007) ...... 3 Table 2 – Bedrock Geology Groups by Kilometre Posts (KPs), West to East, Rev H ...... 5 Table 3 – Depth to Bedrock, Rev H1 ...... 12 Table 4 – Surficial Materials/Soil Types within 1 km-wide Corridor and Crossed by Project Centerline, Rev H ...... 13

FIGURES Figure 1: Terrain Mapping Overview Study Area ...... 2 Figure 2: Terrain Mapping Overview Bedrock Geology ...... 4 Figure 3: Terrain Mapping Overview Surficial Geology ...... 8

APPENDICES Appendix A Depth to Bedrock by KP Stations

Appendix B Surficial Materials / Soil Types by KP Stations

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page iii of iii 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 6 of 36

1.0 INTRODUCTION The Eastern Ontario New Build Segment (Rev H) is approximately 106 kilometres, running eastward from the town of Iroquois Ontario to the Ontario – Quebec border. It is comprised of two spreads; the first, Spread 54 – 55 runs from near Iroquois (KP 0+000) to KP 65+634 and the second, Spread 55 – 56 from KP 0+000 to KP 40+364 at the Ontario – Quebec border (Figure 1). Detailed terrain mapping was carried out for two purposes; (1) to complete mapping of the surficial materials/soil types (e.g., till, bedrock, organic, glaciolacustrine, etc.) and (2) to map the potential overburden thickness (depth to bedrock) in support of the geotechnical components of the Project. This report does not address rock quantities or acid rock drainage.

This report provides a summary of the preliminary results of this desktop exercise. The report must be used in conjunction with the two mapbooks (EE4930-GAL-C-DI-1003, Rev 0 and EE4930-GAL-C-DI-1004, Rev 0) that accompany this submission.

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 1 of 18 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 7 of 36 Mayo Northwest Lachute LEGEND Yukon Territories Montebello Mirabel Fassett ONTARIO NEW BUILD ALIGNMENT CENTRELINE (SPREAD 54-55)(REV H) Grenville British QUEBEC ONTARIO NEW BUILD ALIGNMENT CENTRELINE (SPREAD 55-56)(REV H) Columbia Plaisance Hawkesbury QUÉBEC SEGMENT 1 (REV M)

Alberta

Manitoba Thurso Ontario EXPRESSWAY Saskatchewan UV148 Québec 1,250 PRIMARY HIGHWAY KM Pointe-Fortune Nova WATERCOURSE KEY MAP Scotia Saint-Placide ONTARIO UV50 40+000 PROVINCIAL BOUNDARY Ottawa River WATERBODY

Hudson Oka UV417 UV40 30+000 Gloucester Sainte-Marthe

Sainte-Justine-de-Newton

Saint-Clet 20+000

417 UV Les 20 Casselman UV Cèdres Saint-Polycarpe Saint-Télesphore Coteau-du-Lac 10+000

ONTARIO Salaberry-de-Valleyfield UV30 0+000 Rivière-Beaudette

60+000 St. Lawrence River UV138 Saint-Stanislas-de-Kostka Sainte-Barbe

Saint-Anicet 50+000 8 0 8 16

40+000 Huntingdon 1:400,000 KILOMETRES UV401

30+000

Cornwall

REFERENCES 20+000 Canada 1. ALIGNMENT SEGMENTS RECEIVED FROM TRANSCANADA. ONTARIO REV H AND QUEBEC Dundee REV M. 2. HYDROLOGY OBTAINED FROM CANVEC © DEPARTMENT OF NATURAL RESOURCES CANADA. ALL RIGHTS RESERVED. United States 3. SERVICE LAYER CREDITS: COPYRIGHT:© 2014 ESRI 10+000 ESRI, HERE, DELORME, MAPMYINDIA, © OPENSTREETMAP CONTRIBUTORS, AND THE GIS USER COMMUNITY 4. COORDINATE SYSTEM: NAD 1983 UTM ZONE 18N, DATUM: NORTH AMERICAN 1983

UV401 CLIENT TRANSCANADA UV416 0+000

NEW YORK PROJECT ENERGY EAST EASTERN ONTARIO TITLE TERRAIN MAPPING OVERVIEW

STUDY AREA IF THISMEASUREMENT DOES NOT MATCH WHATIS SHOWN, THE SHEET SIZEHAS BEEN MODIFIED FROM: CONSULTANT

YYYY-MM-DD 2015-08-18 in1

PREPARED JP

DESIGN JG REVIEW DO

APPROVED EW PROJECT No. CONTOL REV. Figure 1411679 00010 0 1 Path: N:\Active\PurVIEW\2014\1411679_EnergyEast\2_Mxd\Figures\ON\ON_Fig1_Overview_1411679_Rev0.mxd 0 CA PDF Page 8 of 36

2.0 BACKGROUND 2.1 Physiographic Setting and Bedrock Geology The Eastern Ontario New Build Segment is found in the St. Lawrence Lowlands physiographic district (Bostock 1970). This physiographic region is characterized by gently sloping plains. The area contains significant deposits of fine grained sediment that formed in a marine environment in the post-glacial Champlain Sea, which existed between 11,000 and 10,000 years ago following the retreat of the Laurentian ice sheet. Isostatic rebound has raised the region some 200 metres, exposing sediments to the atmosphere and subsequent runoff and erosion (Quinn 2012; Karrow and Occhietti 1989). Elevations range from 82.5 metres at KP 0.0 (Spread 54 – 55) to a high of 103 metres at KP 20+ 650 (Spread 55 – 56) to 47 metres along the Ontario/Quebec border.

The area is underlain by flat-lying Paleozoic sedimentary rocks comprised mainly of limestone, shale, dolomite and sandstone (Terasmae and Mott 1965; Sharpe 1979; Karrow and Occhietti 1989) (Figure 2). More detailed mapping by Armstrong and Dodge (2007) suggest that the centerline (Rev H) four (4) bedrock groups, including the Beemantown Group, the Chazy Group, the Ottawa/Simcoe Group and the Potsdam Group. Table 1 provides an alphabetical listing of bedrock types crossed by the project centerline (Rev H); they are not listed from west to east as many units occur in various locations along the line. Table 2 provides a listing of bedrock geology groups by kilometre posts from west to east. It was created by intersecting the Project centerline (Rev H) with the provincial bedrock geology map for Ontario (http://www.mndm.gov.on.ca/en/mines-and- minerals/applications/ogsearth/bedrock-topography-and-overburden-thickness). Table 1 – Alphabetical Listing of Bedrock Groups, Formations and Rock Types Crossed by Project, Rev H (Armstrong and Dodge 2007) Group Formation Rock Types

March March Formation consists of quartz sandstone, dolomitic sandstone Beekmantown Formation and dolostone Group Oxford Oxford Formation consists of crystalline dolostone with local Formation glauconitic shale beds and quarzitic sandstone and shaly dolostone

Lower member consisting of quartz sandstone with interbeds of shale Rockcliffe Chazy Group and upper member consisting of shales, quartz sandstone, shaly Formation limestone and silty dolostone

Ottawa Group; Shadow Lake Sandy shales, shaly arkosic sandstone and silty dolostone Simcoe Group Formation

Nepean Quartzose sandstone with minor conglomerates Formation Potsdam Group Covey Hill Feldspathic conglomerates and sandstone Formation

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 3 of 18 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 9 of 36 Mayo Northwest Lachute LEGEND Yukon Territories Montebello Mirabel Fassett ONTARIO NEW BUILD ALIGNMENT CENTRELINE Grenville (SPREAD 54-55)(REV H) British QUEBEC Columbia ONTARIO NEW BUILD ALIGNMENT CENTRELINE Plaisance Hawkesbury (SPREAD 55-56)(REV H) Alberta

Manitoba Thurso Ontario Saskatchewan UV148 Québec QUÉBEC SEGMENT 1 (REV M) 1,250 EXPRESSWAY KM Pointe-Fortune Nova KEY MAP Scotia PRIMARY HIGHWAY Saint-Placide WATERCOURSE 50 40+000 UV ONTARIO Ottawa River PROVINCIAL BOUNDARY

WATERBODY Hudson Oka UV417 UV40 BEDROCK GEOLOGY GEORGIAN BAY FORMATION, BLUE MOUNTAIN 30+000 FORMATION, BILLINGS FORMATION, Gloucester COLLINGWOOD MEMBER, EASTVIEW MEMBER Sainte-Marthe OTTAWA GROUP, SIMCOE GROUP, SHADOW LAKE FORMATION Sainte-Justine-de-Newton CHAZY GROUP, ROCKCLIFFE FORMATION Saint-Clet 20+000 BEEKMANTOWN GROUP UV417 POTSDAM GROUP, NEPEAN FORMATION, COVEY Les HILL FORMATION 20 Casselman UV Cèdres Saint-Polycarpe GRENVILLE SUPERGROUP, FLINTON GROUP Saint-Télesphore Coteau-du-Lac 10+000

ONTARIO Salaberry-de-Valleyfield UV30 0+000 Rivière-Beaudette

60+000 St. Lawrence River UV138 Saint-Stanislas-de-Kostka Sainte-Barbe

Saint-Anicet 50+000 8 0 8 16

40+000 Huntingdon 1:400,000 KILOMETRES UV401

30+000

Cornwall

UV401 CLIENT TRANSCANADA UV416 0+000

NEW YORK PROJECT ENERGY EAST EASTERN ONTARIO TITLE TERRAIN MAPPING OVERVIEW

BEDROCK GEOLOGY IF THISMEASUREMENT DOES NOT MATCH WHATIS SHOWN, THE SHEET SIZEHAS BEEN MODIFIED FROM: CONSULTANT

YYYY-MM-DD 2015-08-18 in1

PREPARED JP

DESIGN JG REVIEW DO

APPROVED EW PROJECT No. CONTOL REV. Figure 1411679 00010 0 2 Path: N:\Active\PurVIEW\2014\1411679_EnergyEast\2_Mxd\Figures\ON\ON_Fig2_Bedrock_1411679_Rev0.mxd 0 CA PDF Page 10 of 36

Table 2 – Bedrock Geology Groups by Kilometre Posts (KPs), West to East, Rev H Spread Start KP End KP Bedrock Geology 54-55 0+000 11+914 Beekmantown Group 54-55 11+914 24+748 Chazy Group; Rockcliffe Formation 54-55 24+748 65+634 Ottawa Group; Simcoe Group; Shadow Lake Formation 55-56 0+000 17+830 55-56 17+830 23+789 Chazy Group; Rockcliffe Formation 55-56 23+789 28+749 Beekmantown Group 55-56 28+749 34+709 Potsdam Group; Nepean Formation; Covey Hill Formation 55-56 34+709 38+469 Beekmantown Group 55-56 38+469 40+364 Potsdam Group; Nepean Formation; Covey Hill Formation

2.2 Surficial Geology Despite its short distance of only 106 kilometres, the Eastern Ontario New Build Segment traverses a variety of material types, including till plains and areas classed as both clay and sand (marine) plains with scattered areas of peat and muck (Chapman and Putnam 1984; Occhietti 1989).

Sharpe (1979) described the area as mainly lowland of thick glacial drift and marine sediments. This statement is supported by provincial borehole data where a total of 421 boreholes fall within the Eastern Ontario Rev H segment, all located between KP 0.0 Spread 54-55 to KP 29 Spread 55-56 (http://www.mndm.gov.on.ca/en/mines- and-minerals/applications/ogsearth/geotechnical-borehole). The maximum thickness of overburden materials within the 1 km-wide corridor is 32 metres, the minimum is 0 metres and the mean is 13.3 metres with a standard deviation of 5.8m (Plate 1). Of these 421 boreholes, a total of 88 had a value of ‘0’, indicating that no information was available for the particular site. For example, it is common to find a cluster of 2 – 4 boreholes with one having ‘0’ as its value despite the adjacent boreholes having, for example, data of 12.5 metres, 13.2 metres and 15.8 metres. No data is available for the area between KP 29 Spread 55-56 and the Ontario Quebec border, however the overburden thickness gradient map as well as the review of the digital 3D stereo imagery suggests that thickness of the overburden materials increase to the east, hence it is likely that the last 11 kilometres of the line would be characterized by thick materials as well. Sharpe (1979) has found similar results immediately to the west of Iroquois in the Merrickville area where overburden thickness were identified as ranging from 3 to 30 metres. Likewise, Gwyn et al. (1975) report overburden thickness ranging from 35 metres east of Cornwall along the Baudet River to 84 metres near North Lunenburg northwest of Cornwall.

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 5 of 18 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 11 of 36

Plate 1 – Frequency Distribution of Overburden Thickness along Eastern Ontario New Build Segment (Rev H) Based on the above, the bedrock surface is generally at depths greater than 3 metres along the Eastern Ontario Rev H New Build segment. However, the borehole data does not cover the entire corridor and the data was interpolated between boreholes.

Terasmae and Mott (1965) have identified two till deposits, two types of marine deposits from the post-glacial Champlain Sea and recent alluvial and organic deposits. These materials are well correlated with work by Sharpe (1979) in the Merrickville area immediately to the west of Iroquois. Karrow and Occhietti (1989) suggest that much of the area was covered by the Champlain Sea.

Till Deposits – Terasmae and Mott (1965) have identified both the Fort Covington Till and Malone Till as occurring in this area, however more recent research by Clark and Karrow (1983) suggest that the till should be considered as one rather than two. Terasmae and Mott (1965) suggest that the Fort Covington Till is found overlying the Malone Till and the Fort Covington till is sandy compact till, often quite bouldery, and grey to buff in colour when oxidized whereas the Malone Till is clay rich till that is very compact and is blue-grey in colour. Clark and Karrow (1983) suggest that there is one single till sheet ranging from a gray, silty sand, carbonate-rich facies where underlain by dolostone bedrock to a red sandy, carbonate-depleted facies where underlain by sandstone and Precambrian metamorphic bedrock. Sharp (1979) described the Fort Covington tills as being comprised of boulder, cobbly silty sand to sandy silt and being loose and sandier where wave washed. Data from two excavations during the St. Lawrence Seaway project, one at Three Points, east of Iroquois and another at the Iroquois Locks suggest that these till materials range from 15 metres (at Three Points) to approximately 30 metres at the Iroquois Locks (Terasmae 1962).

Marine Champlain Sea Deposits – Terasmae and Mott (1965), Karrow and Occhietti (1989) and Occhietti (1989) have identified both marine clay and silt deposits as well as beach gravels from the Champlain Sea. The marine deposits are widespread and commonly overlain by alluvial and organic deposits, which considerably restrict their surface outcrop (Terasmae 1962). The marine clay and silt deposits are more widespread, are fossiliferous and commonly overlain by a thin layer of sand. Sharpe (1979) suggests that the marine sediments to the west in the Merrickville area are uniform medium sands that were deposited as shallow water sediments. The beach gravels identified by Terasmae and Mott (1965) are coarse textured and fossiliferous.

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 6 of 18 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 12 of 36

Occhietti (1989) suggests that the lithological and mineralogical composition of the marine deposits is related directly to the glacial deposits. The gravels and sands have the same composition as the regional till; and the clays and silts consists mainly of rock flour that includes quartz, feldspar, amphibole, illite, chlorite and some interstratified clays.

According to Terasmae (1962), the soft silty marine clays excavated in the development of the St. Lawrence Seaway project presented some difficulties during excavation as it was subject to flow slides and liquefaction when disturbed. Embankments required special attention because of the low bearing capacity of the clay.

Alluvial/Fluvial Sediments – Described by Terasmae and Mott (1965) as being comprised of stratified sands and silty clay, usually greater than a metre in thickness and commonly underlain by soft marine sediments.

Organics – Described by Terasmae and Mott (1965) as being comprised of peat and muck, being poorly drained and supporting fens, swamps and marsh vegetation.

Figure 3 provides a generalized provincial scale map of surficial geology deposits (http://www.mndm.gov.on.ca/en/mines-and-minerals/applications/ogsearth/quaternary-geology).

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 7 of 18 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 13 of 36 Mayo Northwest Lachute LEGEND Yukon Territories Montebello Mirabel Fassett ONTARIO NEW BUILD ALIGNMENT CENTRELINE Grenville (SPREAD 54-55)(REV H) British QUEBEC Columbia ONTARIO NEW BUILD ALIGNMENT CENTRELINE Plaisance Hawkesbury (SPREAD 55-56)(REV H) Alberta

WATERBODY Hudson Oka UV417 UV40 SURFICIAL GEOLOGY PALEOZOIC BEDROCK 30+000 Gloucester FLUVIAL, CLAY/SILT/SAND Sainte-Marthe FLUVIAL, SAND

GLACIAL, DIAMICTON Sainte-Justine-de-Newton GLACIOMARINE, CLAY/SILT Saint-Clet 20+000 GLACIOMARINE, SAND 417 UV Les GLACIOMARINE, SAND/GRAVEL 20 Casselman UV Cèdres Saint-Polycarpe WETLAND, ORGANIC DEPOSITS Saint-Télesphore Coteau-du-Lac 10+000

ONTARIO Salaberry-de-Valleyfield UV30 0+000 Rivière-Beaudette

60+000 St. Lawrence River UV138 Saint-Stanislas-de-Kostka Sainte-Barbe

Saint-Anicet 50+000 8 0 8 16

40+000 Huntingdon 1:400,000 KILOMETRES UV401

30+000

Cornwall

REFERENCES 20+000 Canada 1. ALIGNMENT SEGMENTS RECEIVED FROM TRANSCANADA. ONTARIO REV H AND QUEBEC Dundee REV M. 2. SERVICE LAYER CREDITS: COPYRIGHT:© 2014 ESRI ESRI, HERE, DELORME, MAPMYINDIA, © OPENSTREETMAP CONTRIBUTORS, AND THE GIS United States USER COMMUNITY 10+000 3. COORDINATE SYSTEM: NAD 1983 UTM ZONE 18N, DATUM: NORTH AMERICAN 1983

UV401 CLIENT TRANSCANADA UV416 0+000

NEW YORK PROJECT ENERGY EAST EASTERN ONTARIO TITLE TERRAIN MAPPING OVERVIEW

SURFICIAL GEOLOGY IF THISMEASUREMENT DOES NOT MATCH WHATIS SHOWN, THE SHEET SIZEHAS BEEN MODIFIED FROM: CONSULTANT

YYYY-MM-DD 2015-08-18 in1

PREPARED JP

DESIGN JG REVIEW DO

APPROVED EW PROJECT No. CONTOL REV. Figure 1411679 00010 0 3 Path: N:\Active\PurVIEW\2014\1411679_EnergyEast\2_Mxd\Figures\ON\ON_Fig3_SurficialGeology_1411679_Rev0.mxd 0 CA PDF Page 14 of 36

3.0 METHODS 3.1 Study Area The study area consists of a 1 km-wide corridor centered on the project centerline (Rev H). This corridor corresponded with the recently acquired digital imagery and LiDAR data. 3.2 Collection and Review of Background Data Publically available data dealing with bedrock geology, surficial geology, overburden thickness and soil surveys were collected and reviewed. If the data were available digitally, they were added to the overall mapping geodatabase so that the data could be referenced and incorporated where appropriate. Fortunately a variety of data was available ranging in scale from 1:1,000,000 (Barnett et al. 1991) and 1:600,000 (Chapman and Putnam 1965) to 1:63,360 (Terasmae and Mott 1965) and 1:50,000 (Sharpe 1979; Belanger et al. 1997). Soil surveys at 1:63,360 scale for the counties of Prescott, Glengarry, Dundas, Stormont and Grenville were also reviewed. In addition, recently collected soils data in support of soil salvage planning was reviewed and incorporated into the overall mapping.

Digital colour stereo aerial photographs, 50 cm resolution LiDAR data and project centerline (Rev H) were provided by Energy East Pipeline Ltd. (EEPL). The aerial photography and LiDAR data was initially acquired in 2013. The imagery is of exceptional quality and can be viewed at scales as large as 1:350. No regional digital stereo aerial photography was available as the digital imagery acquired was limited to the corridor area. 3.3 Mapping and Interpretation All mapping was completed using Golder’s softcopy mapping software (ArcGIS and PurVIEW). This software allows terrain scientists to view digital stereo aerial photography in 3D on a computer monitor and delineate homogeneous terrain units for the purpose of the study. This tool provides significant advantages over the use of traditional mapping approaches with stereoscopes and hardcopy airphotos by allowing the terrain scientist to zoom in from the original acquisition scale (~1:12,500) to scales as large as 1:350.

Relatively homogeneous terrain polygons were delineated on the basis of the following criteria:  Surficial material / soil type (e.g., bedrock, moraine, glaciofluvial, organic, etc.);  Surface expression (e.g., sloping, undulating, terraced, planar, etc.);  Depth to bedrock (e.g., at surface, < 1 m, 1 – 3 m, > 3 m);  Drainage (e.g., rapid, well, moderately well, imperfect, poor, very poor); and,  Geological modifying processes (e.g., seepage, landsliding, karst, etc.). The use of softcopy mapping allows terrain mappers to look at the imagery at a variety of scales, in this case from approximately 1:20,000 to 1:350. Most linework was completed at a scale of approximately 1:5,000 with critical small terrain units (e.g., wetlands and rock outcrops < 2 ha) that were intersected by the centerline (Rev H) being delineated at a scale of 1:1,000 and greater.

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 9 of 18 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 15 of 36

Two sets of 1:15,000 mapbooks have been developed, including (1) depth to bedrock, and (2) surficial material / soil type1. While the mapping has been completed at an approximate scale of 1:5,000, a presentation scale of 1:15,000 was chosen to reduce the overall number of mapsheets that would be required. In this case, at 1:15,000 scale, a total of 23 1:15,000 scale maps are required to cover the entire 106 kilometre length.

A four-class shading pattern was used to indicate depth to bedrock; water and areas where imagery was missing are shown as blue.

Bedrock Category Bedrock at surface Bedrock within 1 metre of surface Bedrock within 1 to 3 metres of surface Bedrock greater than 3 metres below surface

Each terrain polygon has a label as follows:

Surface expression, underlying material (u)

Underlying surficial material (R)

Surface expression, surficial material (b) Geological modifying process (V)

Surficial material / soil type (M)

Percent dominant surficial material 10Mb[Ru] - V i, p D2B = 1 - 3 m

Drainage class (i, p) Depth to bedrock (D2B = 1 - 3 m)

Statistical summaries were developed from the geodatabase. 3.4 Mapping Standards All mapping was completed according to the Terrain Classification System for British Columbia, Version 2.0 (Howes and Kenk 1997). This guidebook for terrain classification is recommended by both TransCanada and used by Golder for its entire terrain mapping projects and has been used for similar purposes for both the Quebec and New Brunswick segments.

1 The term “soil type” is used in the engineering sense and is synonymous with the term “surficial materials”; it is not used from an agricultural soils perspective to classify soils according to the Canadian System of Soil Classification (1997).

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 10 of 18 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 16 of 36

3.5 Quality Control A number of quality control steps were introduced to the overall mapping programs. These included:

1) Use of qualified terrain scientists who were familiar with the mapping standards adhered to in this assignment.

2) A review of digital stereo imagery and LiDAR data at the outset of the Project to ensure that all mappers were identifying and delineating critical landscape elements (e.g., bedrock outcrops, thick deposits, material types, etc.) in a similar manner.

3) Sharing of background data to ensure that all team members had a good understanding of the bedrock types and surficial materials / soil types to be encountered.

4) Periodic review of mapping and classification on a daily basis by all mappers.

5) A formal QA/QC review of up to 50% of all terrain units by Mr. Dennis O’Leary, Senior Terrain Scientist and leader for this component of the project.

6) A formal QA/QC review of the database to ensure that all fields were properly coded and that logic statements were true. For example, drainage regime for bedrock is rapid, for organics, very poor to poor; if bedrock at surface, depth to bedrock field must equal “at surface”, etc.

7) A senior review by Dr. Les Fuller, P.Ag. completed a review of this report to ensure that it met the requirements of the project and that the results properly reflected the conditions observed from the aerial photographs and LiDAR data.

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 11 of 18 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 17 of 36

4.0 RESULTS A total of 626 terrain units were delineated within the 1 km-wide corridor. The mean polygon size is 17.0 ha, while the minimum polygon size is 0.03 ha (small waterbody near KP 21) and the maximum polygon is 557.0 ha (morainal plain between KP 5 and 11). Similarly, a total of 234 terrain units are crossed by the Project centerline (Rev H); of these, the mean segment length is 454.8 metres, the minimum segment length is 3.6 metres and the maximum segment length is 4,965.2 metres.

Of the 626 terrain units identified, 558 or 89% were classed as ‘pure’ units (e.g., 10Mp, in other words, they only have one surficial material type; the remaining 68 units have two parent materials (e.g., 8Mp 2Ov[Mp]). Each of these terrain polygons/segments has interpreted data for (1) surficial geology, (2) surface expression, (3) depth to bedrock, (4) drainage class, and (5) if applicable, geological modifying processes.

This report is accompanied by two mapbooks, including:

1) Depth to Bedrock (colour coded on depth to bedrock classes); and,

2) Surficial Materials (colour coded on dominant parent material / soil type).

These mapbooks are to be used in conjunction with this report. 4.1 Depth to Bedrock Table 3 provides a combined summary of both spreads (54 – 55 and 55 – 56) of bedrock conditions within the 1 km-wide corridor as well as for those areas intersecting the Project centerline.(Rev H) Mapbook A provides a series of 1:15,000 scale maps depicting depth to bedrock within the 1 km-wide corridor; the centerline (Rev H) and KP stations are found on the maps. Appendix 1 provides a listing of depth to bedrock by KP stations. Table 3 – Depth to Bedrock, Rev H1 1 km-wide Corridor Intersect with Project Centerline

Area (ha) Percent (%) Length (km) Percent (%) At surface 0 0 0 0 < 1 m below surface 0 0 0 0 1 to 3 m below surface 0 0 0 0 > 3 m below surface 10,309.0 96.8 105.9 99.5 Anthropogenic 87.5 0.8 0.3 0.2 Water 76.8 0.7 0.3 0.3 Unclassified2 171.5 1.6 0 0

Notes: 1 Data from 1:5,000 scale mapping using softcopy mapping tools. 2 Unclassified includes areas where no digital imagery was available. All of the missing imagery is found along the edges of the corridor and does not affect the overall product.

The mapping and subsequent statistics indicate that bedrock is greater than 3 metres deep for the entire 106 kilometre Eastern Ontario segment.

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 12 of 18 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 18 of 36

4.2 Surficial Materials / Soil Types Table 4 provides a combined summary of both spreads (54 – 55 and 55 – 56) of surficial materials / soil types within the 1 km-wide corridor as well as for those areas intersecting the Project centerline (Rev H). Mapbook B provides a series of 1:15,000 scale maps depicting surficial materials / soil types within the 1 km-wide corridor; the centerline (Rev H) and KP stations are found on the maps; materials are colour coded on dominant surficial material. Table 4 – Surficial Materials/Soil Types within 1 km-wide Corridor and Crossed by Project Centerline, Rev H 1 km-wide Corridor Intersect with Project Centerline Class Area (ha) Percent (%) Length (km) Percent (%) Anthropogenic (A) 265.3 2.5 0.7 0.6 Colluvium (C) 8.6 < 0.1 0.01 <0.1 Fluvial (F) 34.7 0.3 0.4 0.4 Glaciofluvial (FG) 138.4 1.3 1.40 1.3 Marine (W) 3,664.5 34.4 37.6 35.3 Moraine (Till) (M) 5,604.8 52.6 59.1 55.5 Organic (O) 671.7 6.3 7.0 6.6 Water (N) 86.2 0.8 0.3 0.3 Unclassified2 171.5 1.6 0 0

The mapping as suggested in Table 4 suggests that till is the dominant material found within both the 1 km-wide corridor (52.6%) and intersected by the Project centerline (Rev H; 55.3%). Marine sediments are the second most dominant material (34.4% and 35.3%, respectively). Till materials dominate in Spread 54-55 (62.2 and 68.0% respectively) whereas marine sediments are dominant in Spread 55 – 56 (56.8 and 60.6% respectively). Appendix 2 provides a sequential listing of materials by KP stations. 4.3 Accuracy of Mapping Good terrain mapping supported by field investigations is generally in excess of 80% accurate. In other words, the parent materials / soils types and depth to bedrock would be properly identified 80% of the time. Given the fact that no field investigations have been completed to support the mapping, it is estimated that the mapping is likely 70 – 75% accurate.

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 13 of 18 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 19 of 36

5.0 RECOMMENDATIONS The following recommendations are suggested:

1) A field reconnaissance program is recommended to verify the results of the desktop study.

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 14 of 18 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 20 of 36

6.0 LIMITATIONS The following limitations are identified:

1) No field data, including either reconnaissance ground observations of road cuts or geotechnical borehole and GPR data has been collected to verify the mapping.

2) No regional scale aerial photography (e.g., 1:30,000 scale) was provided for the mapping. Hence it was not possible to view terrain conditions and geoprocesses (e.g., landsliding, seepage, gullying, karst, etc.) outside of the 1 km-wide corridor and thereby provide sufficient geographic context to terrain conditions within the corridor.

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 15 of 18 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 21 of 36

References Armstrong, D.K. and J.E.P. Dodge. 2007. Paleozoic geology of Southern Ontario, Project Summary and Technical Document. Ontario Geological Survey, Miscellaneous Release – Data 219.

Bélanger, J R, A. Moore, and A. Prégent. 1997. Surficial geology, digital map, Morrisburg, Ontario-New York (31B/14) / Geological Survey of Canada, Open File 3481; scale 1:50,000.

Barnett, P.J., W.R. Cowan and A.P. Henry. 1991. Quaternary geology of Ontario, southern sheet; Ontario Geological Survey, Map 2556, scale 1:1,000,000.LiDAR data.

Bostock, H.S. 1970. A provisional physiographic map of Canada. Geological Survey of Canada paper 64-35 and map1245A (1964).

Chapman, L.J. and D.F. Putnam. 1984. Physiography of Southern Ontario. Ontario Geological Survey Map P2715, Scale 1:600,000.

Clark, P. and P.F. Karrow. 1983. Till stratigraphy in the St. Lawrence Valley near Malone, New York; revised glacial history and stratigraphic nomenclature. Geological Society of America, Volume 94, No. 11, p. 1308 – 1318.

Gao, C., J. Shirota, R.I. Kelly, F.R. Brunton and S. van Haaften. 2006. Bedrock topography and overburden thickness mapping, southern Ontario. Ontario Geological Survey, Miscellaneous Release – Data 207.

Gwyn, Q.H.J., J.Z. Fraser and J.I. Cass. 1975. Bedrock topography of the Cornwall-Huntingdon Area, Southern Ontario; Ontario Div. Mines, Prelim. Map P.1012, Bedrock Topography Ser., scale 1:50,000. Geology and compilation 1974.

Howes, D.E. and E. Kenk. 1997. Terrain Classification System for British Columbia, Version 2.0, 1997. British Columbia Ministry of Environment, Victoria, B.C.

Karrow, P.F. and S. Occhietti. 1989. Quaternary geology of the St. Lawrence Lowlands; Chapter 4 in Quaternary Geology of Canada and Greenland, R.J. Fulton (ed.); Geological Survey of Canada, Geology of Canada, No. 1.

Matthews, B.C. and N.R. Richards. 1954. Soil Survey of Stormont County, Ontario. Ontario Soil Survey Report No. 20. Guelph, ON. Scale 1:63,360.

Matthews, B.C. and N.R. Richards. 1952. Soil Survey of Dundas County, Ontario. Ontario Soil Survey Report No. 14. Guelph, ON. Scale 1:63,360.

Matthews, B.C., N.R. Richards and R.E. Wicklund. 1957. Soil Survey of Glengarry County, Ontario. Ontario Soil Survey Report No. 24. Guelph, ON. Scale 1:63,360.

Occhietti, S. 1989. Quaternary geology of St. Lawrence Valley and adjacent Appalachian subregion; in Chapter 4 of Quaternary Geology of Canada and Greenland, R.J. Fulton (ed.). Geological Survey of Canada, Geology of Canada No. 1.

Quinn, P. 2012. Sensitive clay landslide risk in Eastern Canada (Draft Paper). http://petequinnramblings.wordpress.com/2012/05/12/sensitive-clay-landslide-risk-in-eastern-canada-draft-paper/

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 16 of 18 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 22 of 36

Richard, N.R., B.C. Matthews and F.F. Morwick. 1949. Soil survey of Grenville County. Ontario Soil Survey Report No. 12, Guelph, ON. Scale 1:63,360.

Sharpe, D.R. 1979. Quaternary geology of the Merrickville Area, Southern Ontario. Ontario Geological Survey, Report 180, 54 p. Accompanied by Maps 2387, 2388, scale 1:50,000.

Terasmae, J. 1962. Surficial geology of the Cornwall and St. Lawrence Seaway Project Areas, Ontario. Geological Survey of Canada Bulletin 121.

Terasmae, J, and R.J. Mott. 1965. Surficial geology Cornwall Ontario-Quebec. Geological Survey of Canada Map 1175A; scale 1:63,360.

Thompson, P.H. 1972. Stratigraphy, structure and metamorphism of the Flinton Group in the Bishop Corners- Madoc area, Grenville Province, Eastern Ontario. Ph.D. Dissertation, Carleton University, Ottawa, ON.

Wicklund, R.E. and N.R. Richards. 1962. Soil Survey of Russell and Prescott Counties. Ontario Soil Survey Report No. 33. Ontario Department of Agriculture, Toronto, ON. Scale 1:63,360.

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 17 of 18 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 23 of 36

Websites http://www.mndm.gov.on.ca/en/mines-and-minerals/applications/ogsearth/quaternary-geology http://www.mndm.gov.on.ca/en/mines-and-minerals/applications/ogsearth/bedrock-topography-and-overburden- thickness http://www.mndm.gov.on.ca/en/mines-and-minerals/applications/ogsearth/geotechnical-borehole

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 18 of 18 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 24 of 36

APPENDIX A Depth to Bedrock by KP Stations

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 1 of 3 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 25 of 36

APPENDIX A Depth to Bedrock by KP Stations

Spread KP Station Start KP Station End Dominant Surficial Material / Soil Type

54-55 0+000 20+774 > 3m 54-55 20+774 20+845 Water 54-55 20+845 37+426 > 3m 54-55 37+426 37+466 Water 54-55 37+466 38+202 > 3m 54-55 38+202 38+223 Anthropogenic 54-55 38+223 43+421 > 3m 54-55 43+421 43+435 Anthropogenic 54-55 43+435 44+70 > 3m 54-55 44+70 44+83 Anthropogenic 54-55 44+83 44+264 > 3m 54-55 44+264 44+269 Water 54-55 44+269 55+767 > 3m 54-55 55+767 55+794 Water 54-55 55+794 57+297 > 3m 54-55 57+297 57+317 Anthropogenic 54-55 57+317 59+927 > 3m 54-55 59+927 59+935 Anthropogenic 54-55 59+935 65+202 > 3m 54-55 65+202 65+212 Anthropogenic 54-55 65+212 65+634 > 3m 55-56 0+000 3+839 > 3m 55-56 3+839 3+857 Anthropogenic 55-56 3+857 8+807 > 3m 55-56 8+807 8+821 Water 55-56 8+821 9+947 > 3m 55-56 9+947 9+956 Anthropogenic 55-56 9+956 12+843 > 3m 55-56 12+843 12+854 Anthropogenic

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 2 of 3 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 26 of 36

Spread KP Station Start KP Station End Dominant Surficial Material / Soil Type

55-56 12+854 13+275 > 3m 55-56 13+275 13+288 Anthropogenic 55-56 13+288 15+176 > 3m 55-56 15+176 15+186 Anthropogenic 55-56 15+186 16+658 > 3m 55-56 16+658 16+673 Anthropogenic 55-56 16+673 16+905 > 3m 55-56 16+905 16+943 Water 55-56 16+943 19+393 > 3m 55-56 19+393 19+404 Anthropogenic 55-56 19+404 22+903 > 3m 55-56 22+903 22+920 Anthropogenic 55-56 22+920 24+717 > 3m 55-56 24+717 24+731 Anthropogenic 55-56 24+731 27+386 > 3m 55-56 27+386 27+394 Anthropogenic 55-56 27+394 29+597 > 3m 55-56 29+597 29+605 Anthropogenic 55-56 29+605 33+488 > 3m 55-56 33+488 33+498 Anthropogenic 55-56 33+498 33+539 > 3m 55-56 33+539 33+551 Water 55-56 33+551 35+896 > 3m 55-56 35+896 35+907 Anthropogenic 55-56 35+907 35+955 > 3m 55-56 35+955 35+957 Anthropogenic 55-56 35+957 37+420 > 3m 55-56 37+420 37+473 Water 55-56 37+473 37+486 Anthropogenic 55-56 37+486 40+364 > 3m

Anthropogenic generally refers to roads.

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 3 of 3 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 27 of 36

APPENDIX B Surficial Materials / Soil Types by KP Stations

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 1 of 10 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 28 of 36

APPENDIX B Surficial Materials / Soil Types by KP Stations

Spread KP Station Start KP Station End Dominant Surficial Material / Soil Type

54-55 0+0 0+8 A 54-55 0+8 4+322 M 54-55 4+322 4+991 O 54-55 4+991 9+555 M 54-55 9+555 9+647 O 54-55 9+647 9+666 M 54-55 9+666 9+673 O 54-55 9+673 9+710 M 54-55 9+710 9+793 O 54-55 9+793 14+252 M 54-55 14+252 14+792 O 54-55 14+792 15+252 O 54-55 15+252 17+666 M 54-55 17+666 17+910 F 54-55 17+910 19+710 M 54-55 19+710 19+778 O 54-55 19+778 19+814 M 54-55 19+814 19+930 O 54-55 19+930 20+2 M 54-55 20+2 20+16 O 54-55 20+16 20+774 M 54-55 20+774 20+845 N 54-55 20+845 21+825 M 54-55 21+825 21+839 A 54-55 21+839 23+636 M 54-55 23+636 23+828 O 54-55 23+828 24+561 M 54-55 24+561 24+598 O 54-55 24+598 24+687 M

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 2 of 10 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 29 of 36

Spread KP Station Start KP Station End Dominant Surficial Material / Soil Type

54-55 24+687 24+727 O 54-55 24+727 24+807 M 54-55 24+807 25+52 O 54-55 25+52 26+983 M 54-55 26+983 27+328 A 54-55 27+328 27+347 N 54-55 27+347 27+420 W 54-55 27+420 27+470 A 54-55 27+470 27+726 W 54-55 27+726 27+814 W 54-55 27+814 29+606 W 54-55 29+606 30+247 M 54-55 30+247 32+33 W 54-55 32+33 32+443 M 54-55 32+443 33+762 W 54-55 33+762 35+412 M 54-55 35+412 35+433 A 54-55 35+433 35+758 M 54-55 35+758 36+100 FG 54-55 36+100 36+655 W 54-55 36+655 37+426 FG 54-55 37+426 37+466 N 54-55 37+466 37+741 FG 54-55 37+741 38+202 M 54-55 38+202 38+223 A 54-55 38+223 38+863 M 54-55 38+863 39+410 O 54-55 39+410 39+557 M 54-55 39+557 40+217 O 54-55 40+217 41+855 M 54-55 41+855 42+35 W

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 3 of 10 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 30 of 36

Spread KP Station Start KP Station End Dominant Surficial Material / Soil Type

54-55 42+35 42+175 O 54-55 42+175 42+191 W 54-55 42+191 42+204 O 54-55 42+204 42+211 W 54-55 42+211 42+215 O 54-55 42+215 42+247 W 54-55 42+247 42+340 O 54-55 42+340 42+444 W 54-55 42+444 43+421 M 54-55 43+421 43+435 A 54-55 43+435 43+573 M 54-55 43+573 43+639 F 54-55 43+639 44+70 M 54-55 44+70 44+83 A 54-55 44+83 44+193 M 54-55 44+193 44+264 W 54-55 44+264 44+269 N 54-55 44+269 44+312 W 54-55 44+312 44+941 M 54-55 44+941 45+627 W 54-55 45+627 47+357 M 54-55 47+357 47+693 W 54-55 47+693 49+908 M 54-55 49+908 50+962 W 54-55 50+962 52+343 M 54-55 52+343 52+424 W 54-55 52+424 52+510 M 54-55 52+510 52+648 W 54-55 52+648 53+663 M 54-55 53+663 54+121 W 54-55 54+121 54+240 M

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 4 of 10 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 31 of 36

Spread KP Station Start KP Station End Dominant Surficial Material / Soil Type

54-55 54+240 54+327 W 54-55 54+327 55+77 M 54-55 55+77 55+218 W 54-55 55+218 55+300 W 54-55 55+300 55+511 W 54-55 55+511 55+524 W 54-55 55+524 55+767 W 54-55 55+767 55+794 N 54-55 55+794 56+899 W 54-55 56+899 56+962 W 54-55 56+962 57+270 W 54-55 57+270 57+297 W 54-55 57+297 57+317 A 54-55 57+317 57+917 M 54-55 57+917 58+19 O 54-55 58+19 58+332 M 54-55 58+332 58+953 O 54-55 58+953 59+196 O 54-55 59+196 59+715 M 54-55 59+715 59+927 O 54-55 59+927 59+935 A 54-55 59+935 60+292 O 54-55 60+292 60+465 M 54-55 60+465 61+96 W 54-55 61+96 61+319 M 54-55 61+319 61+791 W 54-55 61+791 61+926 M 54-55 61+926 61+988 W 54-55 61+988 61+990 M 54-55 61+990 62+375 W 54-55 62+375 62+812 M

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 5 of 10 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 32 of 36

Spread KP Station Start KP Station End Dominant Surficial Material / Soil Type

54-55 62+812 62+989 W 54-55 62+989 63+29 F 54-55 63+29 64+892 M 54-55 64+892 65+202 M 54-55 65+202 65+212 A 54-55 65+212 65+589 M 54-55 65+589 65+634 M 55-56 0+0 0+580 M 55-56 0+580 0+707 M 55-56 0+707 0+955 M 55-56 0+955 0+965 M 55-56 0+965 1+552 M 55-56 1+552 1+621 W 55-56 1+621 1+703 M 55-56 1+703 2+594 W 55-56 2+594 2+668 W 55-56 2+668 2+831 W 55-56 2+831 2+944 M 55-56 2+944 3+839 W 55-56 3+839 3+857 A 55-56 3+857 3+866 O 55-56 3+866 4+25 M 55-56 4+25 4+186 O 55-56 4+186 4+646 W 55-56 4+646 4+974 M 55-56 4+974 5+570 W 55-56 5+570 5+754 M 55-56 5+754 6+312 W 55-56 6+312 6+905 M 55-56 6+905 7+47 W 55-56 7+47 8+85 M

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 6 of 10 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 33 of 36

Spread KP Station Start KP Station End Dominant Surficial Material / Soil Type

55-56 8+85 8+807 W 55-56 8+807 8+821 N 55-56 8+821 9+95 W 55-56 9+95 9+675 M 55-56 9+675 9+947 W 55-56 9+947 9+956 A 55-56 9+956 11+15 W 55-56 11+15 11+91 W 55-56 11+91 11+516 W 55-56 11+516 12+843 M 55-56 12+843 12+854 A 55-56 12+854 13+275 M 55-56 13+275 13+288 A 55-56 13+288 13+499 M 55-56 13+499 13+538 O 55-56 13+538 14+628 M 55-56 14+628 14+840 W 55-56 14+840 14+965 O 55-56 14+965 15+176 M 55-56 15+176 15+186 A 55-56 15+186 15+278 M 55-56 15+278 15+700 W 55-56 15+700 15+768 M 55-56 15+768 16+18 W 55-56 16+18 16+188 M 55-56 16+188 16+658 W 55-56 16+658 16+673 A 55-56 16+673 16+905 W 55-56 16+905 16+943 N 55-56 16+943 17+42 W 55-56 17+42 17+75 W

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 7 of 10 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 34 of 36

Spread KP Station Start KP Station End Dominant Surficial Material / Soil Type

55-56 17+75 17+504 W 55-56 17+504 17+543 W 55-56 17+543 18+811 W 55-56 18+811 19+393 M 55-56 19+393 19+404 A 55-56 19+404 19+721 M 55-56 19+721 19+953 O 55-56 19+953 20+360 M 55-56 20+360 20+827 O 55-56 20+827 21+462 M 55-56 21+462 21+553 O 55-56 21+553 21+901 M 55-56 21+901 21+954 O 55-56 21+954 22+107 O 55-56 22+107 22+111 O 55-56 22+111 22+721 M 55-56 22+721 22+903 W 55-56 22+903 22+920 A 55-56 22+920 23+362 W 55-56 23+362 23+534 M 55-56 23+534 23+584 O 55-56 23+584 24+717 M 55-56 24+717 24+731 A 55-56 24+731 25+791 M 55-56 25+791 26+383 W 55-56 26+383 27+346 W 55-56 27+346 27+386 M 55-56 27+386 27+394 A 55-56 27+394 27+454 M 55-56 27+454 27+828 W 55-56 27+828 27+897 W

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 8 of 10 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 35 of 36

Spread KP Station Start KP Station End Dominant Surficial Material / Soil Type

55-56 27+897 29+576 W 55-56 29+576 29+597 M 55-56 29+597 29+605 A 55-56 29+605 30+0 M 55-56 30+0 30+19 F 55-56 30+19 30+141 M 55-56 30+141 32+582 W 55-56 32+582 32+617 W 55-56 32+617 33+154 W 55-56 33+154 33+213 W 55-56 33+213 33+488 W 55-56 33+488 33+498 A 55-56 33+498 33+528 W 55-56 33+528 33+539 C 55-56 33+539 33+551 N 55-56 33+551 33+558 W 55-56 33+558 33+720 W 55-56 33+720 33+773 W 55-56 33+773 33+820 F 55-56 33+820 33+852 W 55-56 33+852 35+5 W 55-56 35+5 35+27 F 55-56 35+27 35+896 W 55-56 35+896 35+907 A 55-56 35+907 35+955 W 55-56 35+955 35+957 A 55-56 35+957 37+420 W 55-56 37+420 37+473 N 55-56 37+473 37+486 A 55-56 37+486 40+364 W

TCPL Document Number: Terrain Mapping Report - Ontario Rev No: 0 EE4930-GAL-C-RP-1002 Contractor Document Number: Rev Date: Page 9 of 10 1411679 2015-08-21 Energy East Protected UNCONTROLLED IF PRINTED CA PDF Page 36 of 36

Dominant Surficial Material / Soil Type Codes

Surficial Material / Soil Type

A Anthropogenic C Colluvium F Fluvial

FG Glaciofluvial LG Glaciolacustrine M Moraine (till) N Water O Organic R Bedrock WG Glaciomarine

TCPL Document Number: Terrain Mapping Report ‐ Ontario Rev No: 0 EE4930‐GAL‐C‐RP‐1002 Contractor Document Number: Rev Date: Page 10 of 10 1411679 2015‐08‐21 Energy East Protected UNCONTROLLED IF PRINTED