Table 5. Comparison of different oil and gas operating practices (best management practice) scenarios and their relative effect on average barren-ground caribou winter Habitat Effectiveness Index (HEI) and average moose late-fall HEI at year 50 of simulation period.

Parameter BMP†
scenario 1
BMP
scenario 2
BMP
scenario 3
Average seismic line width 5 m 3 m or less 3 m or less
Seismic line lifespan 30 years 10 years 10 years
Number of wells per pad 1 1 4
Maximum surface disturbance 20,000 ha
(1.4%)
15,000 ha
(1.1%)
7,500 ha
(0.5%)
Maximum linear density 1.3 km/km² 0.9 km/km² 0.7 km/km²
Barren-ground caribou winter HEI 0.40 0.48 0.59
Moose late-fall HEI 0.25 0.28 0.40
†best management practices