Approximately 50 gallons of water spilled into a storm drain at GKN Aerospace in Garden Grove, prompting testing for potential toxic chemicals, particularly methyl methacrylate (MMA). This incident follows a significant crisis in May when a tank containing 7,000 gallons of MMA posed an explosion risk, leading to the evacuation of 50,000 residents across several cities, including Garden Grove and Anaheim. The spill occurred while transferring stormwater from an onsite tank, and officials believe the likelihood of MMA contamination is low. The California Department of Public Health has stated there is no current risk to the public from MMA exposure related to this incident, and no long-term health effects are expected. However, the transfer of neutralized MMA from storage tanks has been delayed, and residents may notice a fruity odor during its eventual transport. Air sensors in the area have not detected any MMA since the crisis began, providing reassurance to the community.