Investor Presentaiton

Key Sensitivities Key variables +/- $0.05 US/CAD Alta Gas Foreign Exchange 2018 Impact EBITDA ~$16 MM1 Frac Spread Key variables +/- $1/bbl 2018 Impact EBITDA ~$1 MM Natural Gas Volumes Key variables +/- 10% 2018 Impact EBITDA ~$16 MM AltaGas 1 Represents impact to 2H 2018 Expectations as at August 1, 2018 See "forward-looking information" 55

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