cnn's paul vercammen has the story. >> reporter: this family, a modern day brady bunch, lives in his home. >> i'm heartbroken. we had to leave our beautiful home. >> reporter: 33 miles from the house they vacated in porter ranch, a los angeles suburb reeling from a methane gas leak. >> the smell can cause you to be nauseated, can cause to give headaches, nose bleeds which i have had. stomach problem. >> reporter: infrared video taken by environmental activists shows a bloom rising over porter ranch. the utility says the underground leak first detected in october may not be stopped until late march. >> we're drilling a relief well. that relief well is going to go way down about 8,500 feet. it's going to intersect with the leaking well and then pump liquids and mud down there to