1 The largest school district by enrollment with an election in 2016 is Wake County Public School System with 153,534 K-12 students.  The smallest North Carolina school district among the nation's largest with an election in 2016 is Duplin County Schools with 9,628 K-12 students.
Freon only remains a liquid while under pressure inside your refrigerator's cooling system. The chemical changes to a gas as soon as it contacts the air. This means, when you smell freon in and around your refrigerator, you're also inhaling varying amounts of freon gas. According to the Environmental Protection Agency, freon gas is denser than air and travels very slowly to the upper atmosphere.
Environmental regulations that go into effect at the end of this year ban the U.S. manufacture of freon (also called R-12 or CFC-12), the traditional coolant used in auto air conditioners. The new rules, which are meant to protect the earth's ozone layer, have sent freon prices into the stratosphere. This, in turn, has spawned a ring of chlorofluorocarbon (CFC) smugglers that has state and federal officials scrambling.