Order. Good evening, im denise nakano. Neighbors reported hearing a loud boom this afternoon at the peco substation on juniper street. Fire suppression foam went billowing into the streets and about 2500 peco customers lost power. Lets go to nbc 10s drew smith who is live where it all happened. And drew youve learned the foam is not toxic. Deny hes, peco used the word nonhazardous, firefighters told me it should not hurt the environment. If you look you can see fire crews out here theyve been working for hours to try to get the foam down the drain. Peco investigators trying to get into the substation facility to figure out what went wrong. Neighbors say they felt a jolt before seeing a large amount of foam billowing out of this peco substation. There was a huge explosion and i look the outside and i could see foam five feet high running down the street. The bubbles kept on coming. Literally just pouring out. At one point climbing so high, it almost covered a stop sign. I was like oh bo