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Investor Presentaiton

FRAPPE Study - Metro Area Ozone Dominated by Oil & Gas Vehicles Zero-Out Scenarios FRAPPÉ Average O&G Contribution 40N 40N 106W 105W Industrial Contribution 106W 105W 40N 104W 106W 40N 104W 106W Mobile Contribution 105W CEM Contribution 104W 105W 104W -10 -8 -6 -4 -2 0 2 MDA O3 difference (ppbv) 4 6 8 10 Source: Front Range Air Pollution and Phtotochemistry Experiment results, Pfister and Flocke, NCAR,, 2017 CO COLORADO

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