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NOVA Gas Transmission Ltd. Supplemental Aquatic Summary Report North Montney Project March 2014/8860/10173 Sikanni Chief River (212-998700) Sikanni Chief River originates with the outlet of Sikanni Chief Lake approximately 230 km northeast of Fort St. John, BC within the Muskwa-Kechika Management Area. The Sikanni Chief River flows east then north approximately 400 km, forming the Fort Nelson River after its confluence with the Fontas River approximately 80 km southeast of Fort Nelson, BC. The Fort Nelson River flows generally northeast and drains into the Arctic Ocean via the Mackenzie River. The proposed pipeline route crosses the Sikanni Chief River approximately 120 km downstream from the Sikanni Chief Lake as well as six unnamed tributaries to the Sikanni Chief River. Sikanni Chief River is home to a diverse sportfish community (Table 17, BC MOE 2013b). The Sikanni Chief River offers overwintering habitat for fish that spawn, rear and feed in its tributaries such as the Buckinghorse River (Woods 2001). Slimy sculpin and Arctic grayling have been previously documented within 1 km of the proposed crossing location, and rainbow trout and mountain whitefish have been documented approximately 8 km upstream (BC MOE 2013b). Burbot, flathead chub and lake chub have also been sampled throughout the system (EVS Consultants Ltd. 1980). Historical angling data from 1979 include Arctic grayling up to 48 cm in length though population declines are thought to be the result of subsequent overfishing (Woods 2001). Sikanni Chief Falls, a potential barrier to fish passage (approximately 30 m in height), is located approximately 25 km upstream from the proposed crossing and is within the Sikanni Chief Falls Protected Area (BC MOE 2013b). Mistahae Creek (212-998700-60800) Mistahae Creek is a fourth order stream that drains primarily south for approximately 18 km into the Sikanni Chief River. The proposed pipeline route crosses an unnamed tributary to Mistahae Creek (no watershed code). The proposed crossing is approximately 13 km upstream from the confluence of the unnamed tributary with Mistahae Creek and approximately 15 km upstream from the Sikanni Chief River. Potential barriers to fish passage have been identified on Mistahae Creek; however, both are upstream of the confluence of unnamed tributary with Mistahae Creek (BC MOE 2013a). Additional literature on Mistahae Creek and its tributaries is limited. Caribou Creek (212-998700-48600-46200) Caribou Creek is a third order stream that flows north for approximately 14.5 km into the Buckinghorse River. The proposed pipeline route crosses Caribou Creek approximately 10 km upstream from the confluence with the Buckinghorse River. The proposed pipeline route also crosses three unnamed tributaries to Caribou Creek. Arctic grayling have been documented approximately 4 km downstream of the proposed crossing location on Caribou Creek (Table 17, BC MOE 2013b). Additional literature and documentation of Caribou Creek and its tributaries is limited. Buckinghorse River (212-998700-48600) The Buckinghorse River headwaters are within the Muskwa-Kechika Management Area approximately 160 km northwest of Fort St. John, BC. The Buckinghorse River flows northeast for approximately 130 km to its confluence with the Sikanni Chief River. The proposed pipeline route crosses the Buckinghorse River approximately 65 km upstream from its confluence with the Sikanni Chief River as well as two unnamed tributaries to the Buckinghorse River. Buckinghorse River has moderate gradients and moderate habitat complexity (RRCS 1989). Seasonal flow variability, low water temperatures and turbidity limit fish reproduction and growth (RRCS 1989). Arctic grayling, longnose dace and slimy sculpin have been documented throughout the system (Table 17, RRCS 1989). Arctic grayling rear in the Buckinghorse River, however, likely spawn in low elevation tributaries (RRCS 1989). Overwintering occurs in large mainstem channels or in the Sikanni Chief River (RRCS 1989, Woods 2001). Seasonal migrations are likely limited by abundant beaver impoundments (RRCS 1989). Kahta Creek (212-998700-48600-38400-2910) Kahta Creek is a third order stream. Its headwaters originate approximately 1.5 km south of Tescla Creek, east of Highway 97. Kahta Creek flows east for approximately 17 km to its confluence with Middle Fork Page 92 NOVA Gas Transmission Ltd. Supplemental Aquatic Summary Report North Montney Project March 2014/8860/10173 Creek. The proposed pipeline route crosses Kahta Creek twice in its headwaters approximately 16 km upstream from the confluence with Middle Fork Creek, as well as two unnamed tributaries to Kahta Creek. No fish have been previously documented in Kahta Creek; however, Arctic grayling have been documented downstream in Middle Fork Creek (BC MOE 2013b). Additional literature on Kahta Creek and Middle Fork Creek is limited. Tescla Creek (212-998700-48600-38400-4230) Tescla Creek’s headwaters are east of Highway 97 approximately 150 km south of Fort Nelson, BC. Tescla Creek, a third order stream, flows for approximately 10 km east and joins Middle Fork Creek, a tributary to Buckinghorse River. The proposed pipeline route crosses Tescla Creek in its headwaters (K-PWC 115) approximately 7 km upstream from the confluence with Middle Fork Creek. No fish have been previously documented in Tescla Creek; however, Arctic grayling have documented in Middle Fork Creek (BC MOE 2013b). Additional literature on Tescla and Middle Fork creeks is limited. 3.4 Permanent Facilities No watercourse crossings (i.e., channels with defined bed and bank) were identified at the proposed permanent facility sites along the proposed pipeline route during the 2013 open water fish and fish habitat investigations. As a result, no fish or fish habitat concerns occur at the proposed Aitken, Groundbirch or Saturn Compressor Stations (Appendix F). However, a shrubby swamp was identified at the Saturn Compressor Station (see Wetlands Evaluation [TERA 2014b, Appendix F] for additional information) and a potential NCD was identified in the northeast corner of the proposed Aitken Compressor Station. The results of the desktop and field verification of the proposed permanent facilities are summarised in Table 18 TABLE 18 PERMANENT FACILITIES ASSOCIATED WITH THE PROJECT Site Name Legal Location1 Field Data Collection Results Meter Stations Mackie Creek Sales Meter Station A-I-27/94-B-1 Observed and traversed while accessing Mackie (preliminary location) Creek (KPA 80.4). No fish or fish habitat concerns. Altares Receipt Meter Station C-69-H/94-B-8 No fish or fish habitat concerns. Located (preliminary location) approximately 110 m south of unnamed tributary to Ground Birch Creek (KPA 104.5). Kobes Receipt Meter Station D-B-15/94-B-16 Observed and traversed while access drainage (preliminary location) (Townsend Creek watershed) at D-005-B/094-B-16. No fish or fish habitat concerns Gundy Receipt Meter Station C-98-D/94-A-13 Site is located at drainage (Gundy Creek Watershed) (preliminary location) at C-098-D/094-A-13, no fish or fish habitat concerns. Identified as a shrubby swamp, see Wetlands Evaluation (TERA 2014b) for additional information. Aitken Creek Interconnect Meter Station A44-L/94-A-13 No fish or fish habitat concerns. Aitken Creek East Receipt Meter Station A-44-L/94-A-13 No fish or fish habitat concerns. (preliminary location) Aitken Creek West Receipt Meter Station D-57-L/94-B-16 No fish or fish habitat concerns. (preliminary location) Blair Creek Receipt Meter Station C-90-J/94-B-16 No fish or fish habitat concerns. (preliminary location) Halfway River Receipt Meter Station C-53-G/94-G-2 No fish or fish habitat concerns. (preliminary location) Lily Receipt Meter Station D-97-G/94-G-2 No fish or fish habitat concerns. (preliminary location) Page 93 NOVA Gas Transmission Ltd. Supplemental Aquatic Summary Report North Montney Project March 2014/8860/10173 TABLE 18 Cont'd Site Name Legal Location1 Field Data Collection Results Beatton River Receipt Meter Station B-29-J/94-G-2 No fish or fish habitat concerns. Identified as a treed (preliminary location) fen, see Wetlands Evaluation (TERA 2014b) for additional information. Mason Creek Receipt Meter Station C-95-B/94-G-7 No fish or fish habitat concerns. (preliminary location) Buckinghorse River Receipt Meter A-25-F/94-G-7 and D-25-F/94-G-7 No fish or fish habitat concerns. Identified as a treed Station (preliminary location) fen, see Wetlands Evaluation (TERA 2014b) for additional information. Kahta Receipt Meter Station D-C-39/94-G-10 No fish or fish habitat concerns (preliminary location) Kahta North Meter Station D-C-39/94-G-10 No fish or fish habitat concerns (preliminary location) Compressor Stations Groundbirch Compressor Station NE 34-78-16 W6M No fish or fish habitat concerns Saturn Compressor Station NE 6-81-20 W6M No fish or fish habitat concerns. Identified as a shrubby swamp, see Wetlands Evaluation (TERA 2014b) for additional information. Aitken Creek Compressor Station d-23-B/94-B-16 No fish or fish habitat concerns. Drainage identified in north-east corner of site. Note: 1 Legal locations along the most southern portions of the proposed Aitken Section use the Alberta Township System, while the majority of the proposed Aitken Creek Section uses the BC Geographic System. The entire proposed Kahta Section use the BC Geographic System. Page 94 NOVA Gas Transmission Ltd. Supplemental Aquatic Summary Report North Montney Project March 2014/8860/10173 4.0 REFERENCES 4.1 Personal Communications TERA wishes to acknowledge those people identified in the Personal Communications for their assistance in supplying information and comments incorporated into this report. Avis, L. Fisheries Biologist. Northeast Resource Management and Major Projects, BC Ministry of Forests, Lands and Natural Resource Operations. Fort St. John, BC. 4.2 Literature Cited AMEC Earth & Environmental and LGL Limited. 2008. Peace River Fisheries Investigation – Peace River Tributary Spring Spawning Migration, Tributary Summer Juvenile Rearing and Radio Telemetry Studies - 2006.