In its decision in Upland Community First v. City of Upland, the Fourth District Court of Appeal upheld a Mitigated Negative Declaration (MND) for the development of a warehouse and parcel delivery service building against a challenge primarily to its greenhouse gas (GHG) emissions thresholds. In doing so, the Court provided a rare victory for a challenged MND while reaffirming local agency discretion in selecting appropriate quantitative thresholds of significance for GHG emissions under the California Environmental Quality Act (CEQA).