Irvine city leaders are set to discuss a sweeping proposal Tuesday evening that would dramatically change how hazardous materials sites are managed and disclosed across the city. The new rules aim to increase public transparency and enhance safety, requiring conditional use permits for facilities handling dangerous chemicals and mandating notification for residents living near such sites.
The proposed changes come after recent incidents in neighboring communities raised concerns about chemical safety. In May, over 50,000 people were evacuated in Garden Grove due to a chemical tank that emergency officials reported nearly exploded. More recently this month, an incident in La Habra saw an orange chemical cloud hang over the city for hours, prompting evacuations. These events underscore the urgency for local communities to understand and manage hazardous materials risks.
Under the new city staff recommendations, any facility handling hazardous chemicals would need approval from the Planning Commission via a conditional use permit. This would grant the commission discretionary authority to evaluate whether the proposed use is compatible with surrounding land uses and consistent with public health, safety, and welfare. Furthermore, the proposal institutes a new rule requiring that anyone living within a quarter-mile radius of a site with hazardous materials receive direct notice about it.
This represents a significant expansion of existing city policy. Currently, only two specific zoning districts in Irvine—a medical and science district in the Walnut neighborhood and research and development companies in the Northwood neighborhood—mandate notification for property owners and tenants within a quarter-mile of a use with a Risk Management Plan (RMP). City staff highlighted in their report that the current Zoning Ordinance is "limited" in its scope of notification. The proposed amendment, according to the staff report, "enhances public transparency" by expanding the typical public notification radius from 500 feet to one-quarter mile for all sites requiring an RMP.
A preliminary inventory conducted by city staff in June, as ordered by council members, identified more than 1,100 businesses in Irvine registered with the county as handling hazardous materials. While the report did not specify how many of these businesses meet the criteria for filing a full Risk Management Plan (RMP), it noted that only seven of the identified 1,100 businesses currently fall under the California Accidental Release Prevention program. This state program applies to facilities that handle "acutely hazardous materials above State thresholds," which city staff define as hazardous materials exceeding 55 gallons of liquid, 500 pounds of solids, or 200 cubic feet of gas. These thresholds are critical for identifying the most potentially dangerous sites requiring stricter oversight.
Beyond new permitting and notification requirements, the city also plans to streamline its oversight by removing some outdated local rules regarding hazardous chemicals. Staff recommend deferring these responsibilities to the County Health Care Agency and the Orange County Fire Authority, agencies that have been tasked with handling such matters since 1997. This change aims to avoid redundancy and ensure that state and county experts manage complex hazardous materials regulations.
Councilmembers Mike Carroll and Melinda Liu have publicly supported the proposed updates. Councilmember Liu stated the proposal "will allow comprehensive planning and reduce response time," emphasizing proactive safety measures. Councilmember Carroll echoed this sentiment, noting the importance of preparation: "We have to be ready before an emergency happens, not after." He further highlighted that these updates would better equip Irvine's first responders to keep the community safe. Mayor Larry Agran and Councilwoman Kathleen Treseder declined to comment on the proposal, and other council members did not respond to requests for comment.
