August 29, 2013

MOOSA CROSSOVER PROJECT

Supplemental Vegetation and Wetlands Survey Report

Submitted to: NOVA Gas Transmission Limited A Wholly Owned Subsidiary of TransCanada PipeLines Limited 450 - 1st Street SW Calgary, AB T2P 4K5

Report Number: 1213440055/3000/3010 Distribution:

REPORT Electronic Copy - TransCanada, Calgary, AB

MOOSA CROSSOVER PROJECT - SUPPLEMENTAL

VEGETATION AND WETLANDS SURVEY REPORT

Table of Contents

1.0 INTRODUCTION ...... 3

2.0 OBJECTIVES ...... 3

3.0 METHODS ...... 3

3.1 Listed Plant Species Surveys ...... 4

3.2 Invasive Plant Surveys ...... 4

3.3 Vegetation Community Classification ...... 5

3.4 Wetlands Classification...... 5

4.0 RESULTS ...... 5

4.1 Listed Plant Species ...... 5

4.1.1 Historical Listed Plant Observations ...... 5

4.1.2 Listed Plant Field Survey Results ...... 5

4.2 Listed Ecological Communities ...... 7

4.3 Invasive Plant Species...... 7

4.4 Vegetation Community Classification ...... 8

4.5 Wetlands Classification...... 8

5.0 PROJECT AND VEGETATION INTERACTIONS, MITIGATION AND RESIDUAL EFFECTS ...... 10

6.0 IMPLICATIONS TO THE ENVIRONMENTAL ASSESSMENT...... 12

7.0 CLOSURE ...... 13

8.0 REFERENCES ...... 14

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TABLES Table 1 Area of Ecological Land Classification (ELC) Units Affected by the Project within the Terrestrial Local Study Area (LSA) ...... 8 Table 2 Area of Wetlands Affected by the Project within the Terrestrial Local Study Area (LSA) ...... 9 Table 3 Recommended Mitigation for Listed Plant Species and Ecological Communities Observed Within and Adjacent to the Project Footprint ...... 11 Table 4 Recommended Mitigation for Regulated Invasive Plant Species Observed Within and Adjacent to the Project Footprint ...... 11

FIGURES Figure 1 Listed Plant and Weed Species Observations in 2012 and 2013 ...... 6

APPENDICES APPENDIX A Ecological land Classification Units in the Terrestrial LSA and Vegetation Survey Plot Locations

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1.0 INTRODUCTION NOVA Gas Transmission Ltd. (NGTL), a wholly owned subsidiary of TransCanada PipeLines Limited (TransCanada), retained Golder Associates Ltd. (Golder) to prepare this Supplemental Vegetation and Wetlands Survey Report to the environmental and socio-economic assessment (ESA) report completed in June 2013. The supplemental report supports NGTLs application under the National Energy Board Act (NEB Act) Section 58 for the Moosa Crossover Project (the Project).

The Project is located in northeastern Alberta, approximately 35 km northwest of Fort McMurray, Alberta and 30 km south of Fort McKay. The Project consists of construction of 5 kilometres (km) of 508.0 millimetres (mm) (NPS 20) pipeline from the Fort McKay Mainline – Birchwood Creek Section to the Pelican Mainline. The Project will tie-in to an existing valve at the Moosa Exchange Meter Station at NW 25-91-12 W4M and to the Pelican Mainline at NW 28-91-11 W4M. A below ground NPS 16 shut-down valve will be constructed approximately 150 m west of the eastern tie-in location. The pipeline and shut-down valve site are the only permanent Project infrastructure.

Due to the timing of application preparation and submission, appropriately timed surveys of early flowering listed plant species were not completed until after the ESA was filed with the NEB on July 2, 2013. The supplemental surveys were completed in July 2013 for the length of the route alignment to collect information during the appropriate timing window for early flowering listed plant species and confirm the results of the desktop assessment and September 2012 vegetation reconnaissance field survey. This report presents the methods and results of the listed plant species and wetlands surveys conducted, as well as a summary of any changes to potential vegetation and wetlands issues, recommended mitigation and predicted residual effects as described in the ESA filed with the NEB on July 2, 2013 (Golder 2013). 2.0 OBJECTIVES The main objectives of the supplementary vegetation and wetlands surveys were to:  search for and document populations of listed plant species and listed ecological communities along the proposed route as defined by the Federal Species at Risk Act (SARA), the committee on the Status of Endangered Wildlife in Canada (COSEWIC), Alberta Environment and Sustainable Resource Development (ESRD), and Alberta Conservation Information Management System (ACIMS);  search for and document populations of invasive plant species;  identify listed plant species and ecological communities, and confirm and map vegetation communities and wetlands along the route alignment; and  provide mitigation recommendations in the event that listed plants, listed ecological communities or invasive plants are observed. 3.0 METHODS Supplementary surveys for listed plant species and ecological communities, vegetation communities and wetlands were undertaken, focused along the Project footprint, on July 3, 2013 during the early-flowering period. Survey areas were accessed by Argo and by foot. For locations of 2012 and 2013 field surveys points, refer to Appendix A, Figure A-1 and A-2.

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3.1 Listed Plant Species Surveys Provincial and federal agencies maintain lists of plant species of conservation concern. Provincially, the Alberta Conservation Information Management System (ACIMS) maintains tracking and watch lists of species. Species on the tracking list are of high priority because they are considered rare or of conservation concern in some other way (Kemper 2009). Species on the watch list are not of immediate conservation concern, but ACIMS may want to gather more information.

Alberta Environment and Sustainable Resource Development (ESRD) also has a provincial process to evaluate the well-being, or soundness, of wild species populations referred to in General Status of Alberta Wild Species (ESRD 2011). Prior to a species being designated as endangered or threatened under Alberta’s Wildlife Act, the general status of the species is first determined. Status ranks for species are classed to one of the following categories: Extirpated/Extinct, At Risk, May Be At Risk, Sensitive, Secure, Undetermined, Exotic/Alien, Accidental, or Not Assessed.

Similarly, COSEWIC assesses and designates plants and fungi (and animals) that are in some danger of disappearing from Canada (COSEWIC 2012). There are seven COSEWIC status categories: Extinct, Extirpated, Endangered, Threatened, Special Concern, Not At Risk, and Data Deficient.

The federal government periodically reviews the COSEWIC list to determine if a listed species should be protected by law. The Species at Risk Act (SARA) establishes Schedule 1 as the official List of Wildlife (including plants and fungi) Species at Risk (SARA 2012). Schedule 1 of SARA applies to species present on federal lands and is not enforceable elsewhere. However, regardless of land tenure, any species listed on Schedule 1 would be thoroughly evaluated as part of the environmental assessment process.

Listed plant species surveys were primarily targeted in areas along the Project footprint with a moderate to high potential of occurrence, such as wetlands, riparian areas, and certain microsites (e.g., pools, seeps, habitat edges). Survey methodology generally followed the Guidelines for Rare Vascular Plant Surveys in Alberta (ANPC 2012). Within each search area, site information, dominant plant species, indicator plant species and observed listed plant species (confirmed or potential) were recorded. Listed plant species population and plant phenology information were recorded as per ACIMS (2012) guidelines. Location coordinates were taken with a hand-held geographical positioning system (GPS) unit. Photographs were taken of the site and any observed listed plants.

Listed plant species that could not be identified in the field were collected and brought back to the office for review, provided the population could withstand the loss (<4% of individuals) as recommended by the Alberta Native Plant Council (2012). In other cases where field identification was not possible and the population size was too small for collecting (i.e., less than 25 individuals), detailed notes of plant features (e.g., fruit and flower characteristics) were recorded and photographs taken to aid in identification where possible. 3.2 Invasive Plant Surveys A schedule of regulated invasive plants species has been designated as either prohibited noxious or noxious under the Alberta Weed Control Regulation (Province of Alberta 2010). Under the Alberta Weed Control Act (Province of Alberta 2011), these plant species are required to be either destroyed (prohibited noxious weeds) or controlled (noxious weeds), and not spread to other areas.

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Invasive species surveys were focused on areas along the Project footprint with a moderate to high potential of finding invasive plants. These areas are largely restricted to disturbance areas (e.g., well sites, pipeline rights-of-ways and roadsides), edges of native habitat adjacent to disturbance areas, and other areas where human activity has altered the original disturbance regime. Within each search area, site information, land use, disturbance features, dominant plant species and invasive plant species abundance data were recorded. Location coordinates were taken with a hand-held GPS unit. Photographs were taken of the site and the prohibited noxious or noxious weed species observed. 3.3 Vegetation Community Classification Field survey points were pre-selected and mapped within the terrestrial Local Study Area (LSA) as a guide to target survey areas for vegetation community classification. Field surveys focused on confirming vegetation community delineation and classification along the Project footprint. All vegetation communities were mapped and classified according to the Field Guide to Ecosites of Northern Alberta (Beckingham and Archibald 1996) ecological land classification (ELC) system and followed the methods outlined in Section 5.4.1 of the ESA. 3.4 Wetlands Classification Field survey points were pre-selected and mapped within the terrestrial LSA as a guide to target survey areas for wetland classification. Field surveys focused on confirming wetland delineation and classification along the Project footprint. All wetlands within the LSA were mapped and classified according to the Alberta Wetland Inventory (AWI) (Halsey et al. 2004) classification system and followed the methods outlined in Section 5.7.1 of the ESA. 4.0 RESULTS 4.1 Listed Plant Species 4.1.1 Historical Listed Plant Observations A desktop review of historically recorded provincial and federal listed species (ACIMS 2013; ESRD 2011; COSEWIC 2012; SARA 2012) was carried out in relation to both the terrestrial LSA and regional study area (RSA) boundaries. No documented historical occurrences of provincially or federally listed vascular and non-vascular plant species were found with the terrestrial LSA; however two historical observations of provincially listed plant species, one listed vascular plant (Chrysosplenium iowense) and one listed moss (Splachnum ampullaceum) were documented as occurring at two locations in the terrestrial RSA. For more details on these historical findings, refer to Table 5.4-3 and Figure 5.4-1 of the ESA). 4.1.2 Listed Plant Field Survey Results During the 2013 supplemental survey, three provincially listed plants species were identified at four sites in the terrestrial LSA, as shown on Figure 1. Of the three species found, two species, golden saxifrage (Chrysosplenium iowense) and reindeer lichen (Cladonia stygia) are being tracked by ACIMS. Golden saxifrage is ranked as S3? provincially (ACIMS 2013) and is listed as ‘Sensitive’ under the General Status of Alberta Wild Species (ESRD 2011). Reindeer lichen is ranked as S2 provincially (ACIMS 2013) but is listed as ‘Secure’ under the General Status of Alberta Wild Species (ESRD 2011). The third species, alder-leaved buckthorn (Rhamnus alnifolia) is not on the ACIMS tracking or watch lists, but is ranked S3 provincially (ACIMS 2013) and is listed as ‘Sensitive’ under the General Status of Alberta Wild Species (ESRD 2011).

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A T H A B A S C TAR ISLAND A R IV E R

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Tp. 90 Rg.13 Tp. 90 Rg.12 Tp. 90 Rg.11 Tp. 90 Rg.10 LEGEND W4M W4M W4M 5 0 W4M 5 FACILITY LISTED PLANT 2012 FINDINGS LISTED PLANT HISTORICAL RECORDS HAMLET STUDY ROUTE* CLADONIA STYGIA CHRYSOSPLENIUM IOWENSE PRIMARY HIGHWAY SCALE 1:150,000 KILOMETRES SPLACHNUM AMPULLACEUM TERRESTRIAL LOCAL LISTED WEED 2012 FINDINGS LOCAL ROAD STUDY AREA (LSA) SONCHUS ARVENSIS WATERCOURSE TERRESTRIAL REGIONAL PROJECT (SOW THISTLE) TAILINGS POND STUDY AREA (RSA) LISTED PLANT 2013 FINDINGS WATERBODY MOOSA CROSSOVER CHRYSOSPLENIUM IOWENSE

CLADONIA STYGIA TITLE RHAMNUS ALNIFOLIA LISTED WEED 2013 FINDINGS LISTED PLANT AND WEED SPECIES SONCHUS ARVENSIS OBSERVATIONS IN 2012 AND 2013 (SOW THISTLE)

NOTE PROJECT 12-1334-0055 FILE No. *MOOSA CROSSOVER CENTRELINE 20121102 DESIGN CL 13 Mar. 2013 SCALE AS SHOWN REV. 0 REFERENCE GIS AB 28 Aug. 2013 ROADS OBTAINED FROM GEOBASE®. HYDROLOGY OBTAINED FROM ALTALIS, MODIFIED BY GOLDER ASSOCIATES LTD. HAMLETS OBTAINED FROM CHECK K M 29 Aug . 2013 IHS ENERGY INC. FIGURE: 1 PROJECTION: UTM ZONE 12N DATUM: NAD 83 REVIEW C C 29 Aug . 2013 MOOSA CROSSOVER PROJECT - SUPPLEMENTAL

VEGETATION AND WETLANDS SURVEY REPORT

Golden Saxifrage (Chrysosplenium iowense) Golden saxifrage, a member of the Saxifragaceae family, generally appears as golden-yellow or green in colour. It is distinguished from the similar looking green saxifrage (Chrysosplenium tetrandrum) by the number of stamens (2-8), and conspicuous venation on the upper surface of the leaves (Johnson et al. 1995). Golden saxifrage is found on moist, shady sites, especially in rich soil and in wetlands (Johnson et al. 1995). Golden saxifrage is on the ACIMS tracking list with a ranking of S3? within Alberta (ACIMS 2013) and is assessed as ‘Sensitive’ by ESRD (2011) under the General Status of Alberta Wild Species. During the 2013 field surveys, golden saxifrage was found in the treed fen (FTNN) ELC unit at three locations within the Project footprint and outside of the Project footprint (TPP03, TPP05 and TPP06). Reindeer Lichen (Cladonia stygia) Black-footed reindeer lichen is distinguished from the similar species gray reindeer lichen (Cladonia rangiferina) by its dark brown to black stereome and thallus base surfaces (Brodo et al. 2001). Black-footed reindeer lichen is generally found in bogs and open wetland sites across Canada, and during the September 2012 reconnaissance survey it was documented in a c1 ecosite within the terrestrial LSA. Black-footed reindeer lichen is on the ACIMS tracking list, is ranked S2 in Alberta (ACIMS 2013) and is assessed as ‘Secure’ by ESRD (2011) under the General Status of Alberta Wild Species. During the 2013 field surveys, reindeer lichen was found in the treed fen (FTNN), treed swamp (STNN) and Labrador tea – mesic jack pine – black spruce (c1) ELC units at three locations within the Project footprint and outside of the Project footprint (TPE01, TPP09 and TPP11). Alder-leaved Buckthorn (Rhamnus alnifolia) Alder-leaved buckthorn is a low, erect or spreading shrub, usually under 1 m tall that grows in moist soils along streams or in shady woods (Johnson et al. 1995). It is distinguished from other similar looking shrubs, such as red-osier dogwood (Cornus stolonifera) by the prominent pattern of 6 to 8 veins on the leaf surface, grey stem with fine grey hairs and reddish to blue-black berry-like drupes of poisonous fruit (Johnson et al. 1995). Alder- leaved buckthorn is ranked provincially as S3 and is not on the ACIMS tracking or watch lists, although it is assessed as ‘Sensitive’ by ESRD (2011) under the General Status of Alberta Wild Species. During the 2013 field surveys, alder-leaved buckthorn was found at two locations within the Project footprint and outside of the Project footprint (TPP05 and TPP09) in treed fen (FTNN) and treed swamp (STNN) ELC units. 4.2 Listed Ecological Communities A review of the ACIMS database (Allen 2013) indicated that there are 18 confirmed and potential listed ecological communities in the Central Mixedwood Subregion of Alberta. No listed ecological communities were encountered along the Project footprint during the September 2012 reconnaissance survey or the 2013 supplemental field surveys. 4.3 Invasive Plant Species One regulated species, perennial sow thistle (Sonchus arvensis), listed as Noxious under the Alberta Weed Control Act (Province of Alberta 2010), was identified at one location along the Project footprint (TPE08) during the 2013 supplemental survey, as shown on Figure 1. No other regulated weed species were encountered within the terrestrial LSA or within the Project footprint during the 2013 field surveys.

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4.4 Vegetation Community Classification Vegetation communities were confirmed along the length of the Project as shown on Appendix A, Figure A-1 and A-2. The Project footprint consists of approximately 8.7 ha of terrestrial vegetation, which includes 4.1 ha of vegetated ELC units and 4.6 ha of disturbed land (Table 1). Clearing of terrestrial vegetation, including wetlands and disturbance ELC units, within the Project footprint represents approximately 1.2% of the total terrestrial LSA. The terrestrial ELC units with the largest areas within the Project footprint are low-bush cranberry aspen (d1), low-bush cranberry aspen-white spruce (d2) and Labrador tea-subhygric black spruce-jack pine (g1).

Table 1 Area of Ecological Land Classification (ELC) Units Affected by the Project within the Terrestrial Local Study Area (LSA) Baseline Loss or Alteration Due to the Project Percent of ELC Map LSA Composition of Area within Percent of Description Unit within the Code Area LSA Footprint Footprint LSA [ha] [%] [ha] [%] [%] Terrestrial Ecosite Phase and Non-Treed Vegetation Type c1 Labrador tea–mesic jack pine-black spruce 10.9 0.8 0.4 2.6 3.7 d1 Low-bush cranberry aspen 194.7 14.9 1.7 10.7 0.9 d2 Low-bush cranberry aspen-white spruce 304.7 23.3 1.5 9.4 0.5 d3 Low-bush cranberry white spruce 23.2 1.8 0.0 0.0 0.0 e1 Dogwood balsam poplar-aspen 69.5 5.3 0.0 0.0 0.0 e2 Dogwood balsam poplar-white spruce 4.8 0.4 0.0 0.0 0.0 e3 Dogwood white spruce 3.7 0.3 0.0 0.0 0.0 g1 Labrador tea−subhygric black spruce-jack pine 2.8 0.2 0.6 3.7 20.6 Uplands subtotal 614.4 46.9 4.1 26.4 0.7 Total Disturbance ELC Units 135.6 10.4 4.6 29.6 3.4 Total Terrestrial and Disturbance ELC units 750.1 57.2 8.7 56.0 1.2 Total Wetlands and Open Water ELC units 560.5 42.8 6.8 44.0 1.2 Total 1310.5 100.0 15.6 100.0 1.2 Note: Some numbers are rounded for presentation purposes. Thus, it may appear that totals do not equal the sum of the individual values. N/A = not applicable.

4.5 Wetlands Classification Wetlands type and extent were verified along the length of the Project, as shown on Appendix A, Figure A-1 and A-2. A total area of 6.8 ha of organic and mineral wetlands, representing 44.0% of the Project footprint, are crossed by the Project footprint (Table 2). This includes two distinct mineral wetlands that cover an estimated 3.6 ha, and wooded swamp (STNN) and shrubby swamp (SONS) wetland ELC units. While 4.7 ha of open water, non-vegetated wetlands types (e.g., flooded or lake ELC units) occur within the terrestrial LSA, none will be affected by the Project.

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Table 2 Area of Wetlands Affected by the Project within the Terrestrial Local Study Area (LSA) Baseline Loss or Alteration Due to the Project LSA Composition of Area within Percent of Percent of ELC Unit ELC Unit Map Code Description Area LSA Footprint Footprint within the LSA [ha] [%] [ha] [%] [%] Wetlands Peatland (Organic) BFNN Forested bog 5.8 0.4 0.0 0.0 0.0 BTNN Treed bog 257.9 19.7 0.9 5.6 0.3 FONG Graminoid fen 3.5 0.3 0.0 0.0 0.0 FONS Shrubby fen 23.0 1.8 0.0 0.3 0.2 FTNN Treed fen 98.7 7.5 2.3 14.8 2.3 Non-peaty (Mineral) SONS Shrubby swamp 57.8 4.4 0.3 1.9 0.5 STNN Wooded swamp 109.1 8.3 3.3 21.4 3.1 Wetlands subtotal 555.8 42.4 6.8 44.0 1.2 Open Water Non-Vegetation Types flooded Flooded 4.7 0.4 0.0 0.0 0.0 Open Water Non-Vegetation subtotal 4.7 0.4 0.0 0.0 0.0 Total Wetland and Open Water ELC Units 560.5 42.8 6.8 44.0 1.2 Total Terrestrial and Disturbance ELC Units 750.1 57.2 8.7 56.0 1.2 Total 1310.5 100.0 15.6 100.0 1.2 Note: Some numbers are rounded for presentation purposes. Thus, it may appear that totals do not equal the sum of the individual values. N/A = not applicable.

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5.0 PROJECT AND VEGETATION INTERACTIONS, MITIGATION AND RESIDUAL EFFECTS Three listed plant species were observed within the terrestrial LSA during the 2012 and 2013 vegetation surveys: one lichen during the 2012 reconnaissance survey, and the same lichen and two additional species, golden saxifrage and alder-leaved buckthorn, during the 2013 supplemental survey. All three listed plant species were found within the Project footprint.

As indicated in the ESA (Golder 2013), key mitigation measures to reduce the potential effects on vegetation and wetlands include routing the Project parallel to existing linear disturbances for the entire pipeline length, winter construction of the Project, and restricting construction activities to within the boundaries of identified workspaces. In addition, NGTL’s standard practice is to minimize grading to ensure that environmental resources are not compromised as a result of grading (Appendix A of the ESA, Golder 2013).

Individual plants that are within the Project footprint may be affected by the Project, but the persistence of the identified listed plant populations is not expected to be affected because all three species were determined to have greater than 90% of the population extending outside the Project footprint (Table 3). Therefore, no mitigation in addition to that described in the ESA (Table 6.2.2, Terrestrial Vegetation of Golder 2013) and the Environmental Protection Plan (EPP) for the Project (Appendix A in Golder 2013) is recommended specific to these occurrences (Table 3).

One regulated noxious weed (Province of Alberta 2010), perennial sow thistle, was observed at one location within the Project footprint during the 2013 supplemental survey. No mitigation in addition to that described in the ESA (Table 6.2.2, Terrestrial Vegetation of Golder 2013) and the Environmental Protection Plan (EPP) for the Project (Appendix A in Golder 2013) is recommended specific to this occurrence (Table 4).

With the implementation of the general mitigation described in the ESA and the Environmental Protection Plan (EPP) for the Project (Golder 2013) the predicted residual effects of the Project on listed plant species and listed ecological communities remain as assessed in the ESA (Golder 2013). That is, no predicted residual effect on listed plants or listed ecological communities, or as a result of the proliferation of noxious weeds, is predicted.

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Table 3 Recommended Mitigation for Listed Plant Species and Ecological Communities Observed Within and Adjacent to the Project Footprint

Abundance ACIMS ESRD Provincial Location (c) Listed Plant Species (a) (b) Relation to Project Footprint Habitat Recommended Mitigation Rank Ranking Plot (a) Easting Northing Number 3 individuals within a single Located within the Project footprint approximately TPP03 455340 6309749 patch 9 m north of the centerline No additional mitigation required. golden saxifrage 10 individuals in 2 to 5 Located adjacent to the Project footprint Moist, shady sites, especially in S3? Sensitive TPE05 454898 6309726 Population of species is continuous and robust outside the Project footprint Chrysosplenium iowense patches approximately 22 m south of the centerline rich soil and wetlands (>90% of the population is outside the Project footprint). Located within the Project footprint approximately TPP06 454791 6309750 1 individual 4 m north of the centerline Located adjacent to the Project footprint TPE01 455985 6309715 1 individual approximately 17 m south of the centerline No additional mitigation required. reindeer lichen Located within the Project footprint approximately S2 Secure TPP09 451600 6309778 1 individual Bogs and open wetland sites Population of species is continuous and robust outside the Project footprint Cladonia stygia 6 m south of the centerline (>90% of the population is outside the Project footprint). Located within the Project footprint approximately TPP11 452338 6309767 1 individual 7 m south of the centerline Greater than 10 individuals Located outside of the Project footprint TPP05 454898 6309726 No additional mitigation required. alder-leaved buckthorn in 2 to 5 patches approximately 22 m south of the centerline Moist soils along streams or in S3 Sensitive Population of species is continuous and robust outside the Project footprint Rhamnus alnifolia Greater than 10 individuals Located within the Project footprint approximately shady woods TPP09 451600 6309778 (>90% of the population is outside the Project footprint). in 2 to 5 patches 6 m south of the centerline (a) Source data: ACIMS (2013). Listed plant status rank definitions: S1 = 5 or fewer occurrences or only a few remaining individuals. S2 = 6 to 20 occurrences or few remaining hectares. S3 = 21 to 80 occurrences. May be listed and local throughout its range or found locally, even abundantly, in a restricted range (e.g., a single western province or a physiographic region in the east) (Kemper 2009). Global species rank definitions: G1 = critically imperiled, at high risk of extinction due to extreme rarity (5 or fewer populations), very steep declines. G2 = imperiled, at high risk of extinction or elimination due to very restricted range, relatively few populations, recent and widespread declines, or other factors. G3 = vulnerable; at moderate risk of extinction or elimination due to a restricted range, relatively few populations, recent and widespread declines, or other factors. G4 = apparently secure – uncommon but not rare; some cause for long-term concern due to declines or other factors. G5 = secure, common; widespread and abundant. GNR = unranked, global rank not yet assessed (NatureServe 2009). (b) Source: ESRD (2011). (c) Relation to Project footprint’ is based on location of the vegetation plot as well as an estimate of the distance of the full population to the Project footprint, which includes the right-of-way and temporary work space.

Table 4 Recommended Mitigation for Regulated Invasive Plant Species Observed Within and Adjacent to the Project Footprint Location Species Survey Year Rank(a) Abundance Weed Distribution Code Relation to Project Footprint (b) Habitat Mitigation Measures Easting Northing Located within the Project footprint approximately perennial sow thistle Sonchus arvensis 2013 Noxious 451212 6309760 10 individuals within a single patch 2 Disturbed areas such as rights-of-way and along roadsides No additional mitigation required. 29 m south of the centerline (a) Source: Province of Alberta (2010). (b) ‘Relation to Project footprint’ is based on location of the vegetation plot as well as an estimate of the distance of the full population to the Project footprint, which includes the right-of-way and temporary work space.

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6.0 IMPLICATIONS TO THE ENVIRONMENTAL ASSESSMENT Three listed plant species were observed within the terrestrial LSA and the Project footprint during the 2012 reconnaissance survey and the 2013 supplemental survey. The populations of all three species were determined to largely occur outside the Project footprint. No site-specific mitigation for listed plant species in addition to that in the ESA and EPP (Golder 2013) is recommended.

The implementation of mitigation recommended in the ESA and EPP (Golder 2013) is predicted to control the potential spread of the regulated invasive plant species, perennial sow thistle.

The importance of the Project effect on listed plant species and listed ecological communities is determined to be low, and the resulting Project effect on vegetation and wetlands is predicted to be not significant. Thus, the findings of the supplemental field surveys result in no change to the effects assessment for vegetation and wetlands as presented in the ESA (Golder 2013).

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7.0 CLOSURE We trust the above meets your present requirements. If you have any questions or require additional details, please contact the undersigned.

GOLDER ASSOCIATES LTD.

Kelli Warren, B.Sc., P. Biol. Curtis Campbell, M.Sc. Vegetation and Rare Plant Specialist Principal, Environmental Project Director

KW/CC/mh

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8.0 REFERENCES ACIMS (Alberta Conservation Information Management System). 2013. List of Tracked and Watched Elements—June, 2013. Available online at http://www.albertaparks.ca/albertaparksca/management- land-use/alberta-conservation-information-management-system-(acims)/tracking-watch-lists.aspx. Accessed: July 5, 2013.

ACIMS. 2012. Rare Native Plant and Lichen Survey Form. Available online at http://www.albertaparks.ca/albertaparksca/management-land-use/alberta-conservation-information- management-system-(acims)/submit-data.aspx. Accessed: July 5, 2013.

Allen, L. 2013. Alberta Conservation Information Management System Ecological Community Tracking List. Alberta Tourism, Parks and Recreation, Edmonton, Alberta.

AIPC (Alberta Invasive Plant Council). No Date. Invasive Plant Info Sheets. Available online at http://www.invasiveplants.ab.ca/management.htm. Accessed: August 3, 2012.

ANCP (Alberta Native Plant Council). 2012. ANPC Guidelines for Rare Vascular Plant Surveys in Alberta – 2012 Update. Alberta Native Plant Council, Edmonton, AB. Available on-line at http://www.anpc.ab.ca/content/resources.php

Beckingham, J.D. and J.H. Archibald. 1996. Field Guide to the Ecosites of Northern Alberta. Natural Resource Canada, Canadian Forest Service, Northwest Region, Northern Forest Centre, Edmonton, Alberta. Special Report 5.

Brodo, I. M., S. D. Sharnoff and S. Sharnoff. 2001. Lichens of North America. Yale University Press. New Haven, CT. 795 pp.

COSEWIC. 2012. Canadian Wildlife Species at Risk. Committee on the Status of Endangered Wildlife in Canada. Available online at: http://www.cosewic.gc.ca/eng/sct0/rpt/csar_e.html. Accessed July 4, 2013.

ESRD (Alberta Environment Sustainable Resource Development). 2011. The General Status of Alberta Wild Species 2010. Alberta Environment Sustainable Resource Development, Fish and Wildlife Service Division. Available online at: http://srd.alberta.ca/FishWildlife/SpeciesAtRisk/GeneralStatusOfAlbertaWildSpecies/GeneralStatusofAlb ertaWildSpecies2010/Default.aspx. Accessed July 4, 2013.

Golder (Golder Associates Ltd.). 2013. Moosa Crossover Project: Environmental and Socio-Economic Assessment. Submitted to TransCanada PipeLines Limited. Calgary, AB. June 2013. 317 pp. + Appendices. Halsey, L.A., D.H. Vitt, D. Beilman, S. Crow, S. Mehelcic and R. Wells. 2004. Alberta Wetlands Inventory Standards, Version 2.0. Alberta Sustainable Resource Development, Resource Data Branch. Edmonton, AB. 54 pp.

Johnson, D., L. Kershaw, A. MacKinnon and J. Pojar. 1995. Plants of the Western Boreal Forest and Aspen Parkland. Lone Pine Publishing. Edmonton, AB.

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Kemper, J.T. 2009. Alberta Natural Heritage Information Centre Vascular and Non-vascular Plant Tracking and Watch Lists. Alberta Tourism, Parks and Recreation, Parks Division, Edmonton, Alberta.

NatureServe. 2009. NatureServe Conservation Status. Website: http://www.natureserve.org/explorer/ranking.htm. Accessed July 4, 2013.

Province of Alberta. 2010. Weed Control Act, Alberta Regulation 19/2010, Weed Regulation. Alberta Queen's Printer. Edmonton, AB. 8 pp.

Province of Alberta. 2011. Weed Control Act, Statutes of Alberta, 2008. Alberta Queen's Printer. Edmonton, AB. 15 pp.

SARA (Species at Risk Act). 2012. Government of Canada Species at Risk Public Registry. Schedule 1, Subsections 2(1), 42 (2) and 68 (2). List of Wildlife Species at Risk. Available at: http://www.sararegistry.gc.ca/species/schedules_e.cfm?id=1. Accessed July 4, 2013.

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APPENDIX A Ecological land Classification Units in the Terrestrial LSA and Vegetation Survey Plot Locations

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BFNN BFNN ³ BFNN d1 d2 SONS STNN d1 35 FTNN d1 STNN d1 36 FONG FONS d2 Flooded 31 32 FTNN d3 BFNN STNN STNN BFNN BTNN Flooded d2 BFNN SONS SONS STNN BFNN d2 d2 d1 SONS e2 BFNN FONS d2 STNN d1 STNN FTNN FTNN FTNN BFNN e2 e3 d2 BFNN FTNN d1 d2 BFNN FTNN d1 g1 c1 STNN Tp. 91 Rg.12 R-O-W Moosa Exchange Tp. 91 Rg.11 Meter Station TPP09 W4M TMWK07 ! TPE08 1+000 TPP11 TMWK06 W4M ") # ") 2+000 ") TPP06 TPP03 ") ! TPE12 ! TPE13 TPE07 4+000 ") d2 ") ")TPE10 ") ! ") TPP05 ! ") d2 TMEK03 STNN ") ") ") ") TMEK02 TMEK04 ") ") TPE04 STNN") ") d1 BFNN ") 3+000 TMEK09 g1 ")TMEK10 ") TMEK05 ") TMEK01 STNN d2 c1 STNN SONS d2 d2 d1 FTNN d1 FONS d1 STNN SONS/MONG/WONN FTNN d3 BFNN FTNN STNN Flooded

c1 d3 d2 BFNN d1 STNN d2 STNN d3 BFNN d2 STNN e1 e1 d3 26 d1 d3 SONS 30 29

FONG SONS d1 FONS STNN d2 d3 STNN FTNN d1 d2 FONG BFNN STNN Flooded d2 STNN d2 BFNN d2 STNN d2 d2

LEGEND

# FACILITY ECOSITE PHASE & ECOSITE PHASES WETLAND TYPES INDEX MAP 500 0 500 WETLAND CLASS ! KILOMETRE POST LABRADOR TEA-MESIC JACK PINE-BLACK SPRUCE (c1) FORESTED BOG (BFNN) TERRESTRIAL LOCAL SCALE 1:15,000 METRES LOG DECK LOW-BUSH CRANBERRY ASPEN (d1) WOODED BOG (BTNN) Tp.92 Rg.13 STUDY AREA (LSA) Tp.92 Rg.12 Tp.92 Rg.11 Tp.92 Rg.10 LOW-BUSH CRANBERRY ASPEN-WHITE SPRUCE (d2) GRAMINOID FEN (FONG) W4M W4M W4M RIGHT-OF-WAY (ROW)* W4M PROJECT LOCAL ROAD LOW-BUSH CRANBERRY WHITE SPRUCE (d3) SHRUBBY FEN (FONS) TEMPORARY WATERCOURSE MOOSA CROSSOVER WORKSPACE (TWS) DOGWOOD BALSAM POPLAR-ASPEN (e1) WOODED FEN (FTNN) WATERBODY DOGWOOD BALSAM POPLAR-WHITE SPRUCE (e2) MARSH (MONG) VEGETATION SURVEY LOCATIONS TITLE DOGWOOD WHITE SPRUCE (e3) SHRUBBY SWAMP (SONS) ") A-2 ECOLOGICAL LAND CLASSIFICATION 2012 SURVEY PLOT LABRADOR TEA-SUBHYGRIC BLACK SPRUCE-JACK PINE (g1) WOODED SWAMP (STNN) A-1 ") 2013 SURVEY PLOT UNITS IN THE TERRESTRIAL LSA AND DISTURBANCE DISTURBANCE (DIS) Tp.91 Rg.13 Tp.91 Rg.12 Tp.91 Rg.11 Tp.91 Rg.10 SURVEY PLOT LOCATIONS NOTE W4M W4M W4M W4M PROJECT 12-1334-0055 FILE No. *MOOSA CROSSOVER ROW 20121102 DESIGN LV 07 Feb. 2013 SCALE AS SHOWN REV. 0 REFERENCE GIS AB 11 Jul. 2013 ROADS OBTAINED FROM GEOBASE®. HYDROLOGY OBTAINED FROM ALTALIS, MODIFIED BY GOLDER ASSOCIATES LTD. AVI DATA OBTAINED FROM ALBERTA ESRD. SCALE: 1:250,000 CHECK KM 28 Jul. 2013 IMAGERY CAPTURED IN 2011, OBTAINED FROM TRANSCANADA. FIGURE: A-1 REVIEW CC 28 Jul. 2013

I:\CLIENTS\TRANSCANADA\12-1334-0055\Mapping\MXD\Vegetation\ELC_20130711.mxd PROJECTION: UTM ZONE 12N DATUM: NAD 83 BFNN ³ BFNN d1 SONS STNN d1 FTNN d1 STNN 36 FONG FONS d2 Flooded 31 32 BFNN BFNN 33 FTNN d3 BFNN STNN STNN d2 d2 BFNN STNN BTNN Flooded

SONS STNN BFNN STNN d1 SONS e2 BFNN FONS d2 d2 STNN FTNN STNN FTNN BFNN FTNN FTNN BFNN e2 d2 e3 BFNN FTNN d1 d2 d2 d3 FTNN d1 g1 c1 STNN Tp. 91 Rg.12 Tp. 91 Rg.11 R-O-W W4M TMWK07 1+000 TPP11 TMWK06 W4M ") ") ! 2+000 ") TPP06 TPP03 TPE10 ") TPE12 ! TPE13 TPE07 TPP05 4+000 STNN d2 ") ") STNN ! ") ! ") TPE01 TMEK02 TMEK03 ") ") ") ") ") ") Pelican Mainline Tie-in BFNN ") TMEK04 TMEK09 ") ") TPE04 STNN ") TMEK05 3+000 g1 TMEK10 d1 ") ") TMEK01 BFNN d2 c1 d1 STNN SONS d2 d2 d1 FONS d1 FTNN STNN SONS/MONG/WONN BFNN FTNN STNN Flooded Clearcut d1 e1 c1 FONG d3 BFNN d1 STNN d2 d2 STNN d3 BFNN d2 e1 e1 d3 d1 d3 SONS 30 29 d1 28 FONG SONS d1 STNN d2 d3 STNN d1 FTNN BFNN STNN d2 BFNN FONG BFNN d2 d2 STNN Flooded STNN BFNN d2 STNN d2 d2 FONS FTNN FTNN

LEGEND

# FACILITY ECOSITE PHASE & ECOSITE PHASES WETLAND TYPES INDEX MAP 500 0 500 WETLAND CLASS ! KILOMETRE POST LABRADOR TEA-MESIC JACK PINE-BLACK SPRUCE (c1) FORESTED BOG (BFNN) TERRESTRIAL LOCAL SCALE 1:15,000 METRES LOG DECK LOW-BUSH CRANBERRY ASPEN (d1) WOODED BOG (BTNN) Tp.92 Rg.13 STUDY AREA (LSA) Tp.92 Rg.12 Tp.92 Rg.11 Tp.92 Rg.10 LOW-BUSH CRANBERRY ASPEN-WHITE SPRUCE (d2) GRAMINOID FEN (FONG) W4M W4M W4M RIGHT-OF-WAY (ROW)* W4M PROJECT LOCAL ROAD LOW-BUSH CRANBERRY WHITE SPRUCE (d3) SHRUBBY FEN (FONS) TEMPORARY WATERCOURSE MOOSA CROSSOVER WORKSPACE (TWS) DOGWOOD BALSAM POPLAR-ASPEN (e1) WOODED FEN (FTNN) WATERBODY DOGWOOD BALSAM POPLAR-WHITE SPRUCE (e2) MARSH (MONG) VEGETATION SURVEY LOCATIONS TITLE DOGWOOD WHITE SPRUCE (e3) SHRUBBY SWAMP (SONS) ") A-2 ECOLOGICAL LAND CLASSIFICATION 2012 SURVEY PLOT LABRADOR TEA-SUBHYGRIC BLACK SPRUCE-JACK PINE (g1) WOODED SWAMP (STNN) A-1 ") 2013 SURVEY PLOT UNITS IN THE TERRESTRIAL LSA AND DISTURBANCE DISTURBANCE (DIS) Tp.91 Rg.13 Tp.91 Rg.12 Tp.91 Rg.11 Tp.91 Rg.10 SURVEY PLOT LOCATIONS NOTE W4M W4M W4M W4M PROJECT 12-1334-0055 FILE No. *MOOSA CROSSOVER ROW 20121102 DESIGN LV 07 Feb. 2013 SCALE AS SHOWN REV. 0 REFERENCE GIS AB 11 Jul. 2013 ROADS OBTAINED FROM GEOBASE®. HYDROLOGY OBTAINED FROM ALTALIS, MODIFIED BY GOLDER ASSOCIATES LTD. AVI DATA OBTAINED FROM ALBERTA ESRD. SCALE: 1:250,000 CHECK KM 28 Jul. 2013 IMAGERY CAPTURED IN 2011, OBTAINED FROM TRANSCANADA. FIGURE: A-2 REVIEW CC 28 Jul. 2013

I:\CLIENTS\TRANSCANADA\12-1334-0055\Mapping\MXD\Vegetation\ELC_20130711.mxd PROJECTION: UTM ZONE 12N DATUM: NAD 83

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