LOS ANGELES (CBSLA.com) — Students attending classes at a pair of Los Angeles Unified School District schools in the Porter Ranch-area returned to different campuses on Tuesday.

On Dec. 17, 2015, the LAUSD board declared an emergency at Porter Ranch Community School and Castlebay Lane Charter School in response to the ongoing natural gas leak from Southern California Gas Company’s Aliso Canyon storage facility.

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The board decided to temporarily move students to alternate locations until the situation was resolved.

According to the school district, Porter Ranch Community School is located about two miles from the facility. Castlebay Lane Charter School is located around a mile from the site.

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About 1,100 kindergarten through 8th-grade Porter Ranch Community School students attended classes on the campus of Northridge Middle School.

School district officials said 770 kindergarten to 5th-grade Castlebay Lane Charter School students attended classes on the campus of Sunny Brae Elementary School in Winnetka.

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Natural gas has been leaking in the Porter Ranch-area since late Oct. 2015.