Cities charged with preparing EIRs for proposed projects often look to their general plans and other adopted policies to set thresholds of significance for assessing environmental impacts. A lead agency’s discretion to select a particular significance threshold has long been afforded deference under CEQA’s “substantial evidence” standard of review. Potential impacts assessed under a general plan-based significance threshold have similarly enjoyed deferential review under the substantial evidence standard. However, in East Sacramento Partnerships for a Livable City v. City of Sacramento (2016) 5 Cal.App.5th 281, as modified on denial of rehearing, the Third Appellate District appears to have relied on the less deferential “fair argument” standard in holding that compliance with a general plan policy does not conclusively establish there is no significant environmental impact. In so holding, the court found that the City of Sacramento (“the City”) failed to adequately address the traffic impacts related to a development project.