Enjoy unlimited access to exclusive articles and ad free content. TJ McCoy, interim Orange County Fire chief said on Sunday that the crack was detected during a Saturday night visual inspection of a 7,000-gallon storage tank at GKN Aerospace in Garden Grove. The new information could alter our proach to the event, and we are currently evaluating and validating it. Officials spraying water on the storage tanks of GKN Aerospace at Garden Grove, Calif., on Sunday. Kayla Bartkowski/ Los Angeles Times/

According to a spokesperson, the company monitors the condition of “affected materials” and crews work “around the clock” to minimize the risk of leakage. Tens of thousands are being evacuated due to fears of a leak or explosion. Many of them are in shelters. McGovern, NBC News reported that crews will be checking to see if the crack in the tank is releasing any pressure. If this is the case, then “the possibility of BLEVE

he said

[boiling liquid expanding vor explosion]

McGovern said

. crews will conduct an “all night mission” Sunday to confirm that the pressure has been released in the tank. Chief said that a report on this mission will be available Monday. The chief said that there was still the possibility of an explosion, but by releasing pressure, he could avoid a BLEVE. He described a BLEVE as “very dangerous and much worse than a blast.” If there is still a possibility of a BLEVE, the area for evacuation will be large. However, if this is eliminated, it can be reduced and crews could focus on cooling down the tank. McGovern said that the air monitoring showed the fissure did not lead to toxic air being released. Officials are worried that the tank at GKN Aerospace may rupture, releasing toxic materials into waterways or vors in the air. Kayla Bartkowski / Los Angeles Times /

According to a spokesperson for GKN Aerospace, crews work “round the clock” to minimize the risk of a possible leak.

Officials also worry that the tank may rupture and leak toxic material into nearby waterways. Covey told reporters that the incident could be one of California’s worst ever chemical accidents. Officials claim that the blast radius of up to a half-mile would cause structural damage, and toxic vors will most likely be released into the air. Orange County’s shelters are full of frightened locals, as 50,000 are ordered to leave. Lydia Green is one of those people. She lives in Anaheim – about a mile away from the facility. Green told NBC News in La Palma, California, on Sunday that she was “nervous, scared and devastated.” I’ve gone without medication, food, and hotels. It has been a very difficult time.

It’s a whole lot of anger. … I wonder why these facilities are located right next to so many houses. He said, “And it makes me sad too.” “You hope it gets managed properly and that the worst-case scenarios don’t occur, because these are peoples’ houses and it’s likely going to affect more of a range than they have said.” said Sunday evacuees in a temporary Shelter on Garden Grove, Friday. Blake Fagan / through .

According to the

, six shelters for evacuees in the area are at or near cacity. McGovern stated that there’s still no set date for residents to return. Orange County firefighters said that concern first sprang up on Thursday after a “vor discharge” was detected at the tank holding 7,000 gallons. Further investigation revealed that the temperature in the tank was increasing.

The firefighter used sprinklers and hoses to cool the tank. McGovern stated that crews noticed that during an operation on Saturday night the pin of the temperature gauge displayed 100 degrees Fahrenheit. This was the highest setting it could display, which meant that actual temperatures inside the tank may have been higher. Garden Grove is located in Orange County in the northern part, proximately 35 miles south-east of Los Angeles. Disneyland Anaheim is 4 miles away.

Gov. Gavin Newsom declared an emergency in Orange County, California on Saturday. He requested on Sunday that President Donald Trump

support response operations within the county. McGovern stated that officials are using “outside the box thinking” and working together to find a solution so families can return home. He added, “We will not return them until it is safe.”