(a) A Type 2A leak does not present an immediately hazardous condition to the public or buildings, but is of a nature that requires frequent surveillance and scheduled repair.
(b) Type 2A leaks shall be repaired within a period not to exceed six months.
(c) Type 2A leaks shall be maintained under surveillance with a frequency not to exceed two weeks until repaired.
(d) Type 2A leaks include, but are not limited to:
(1) any reading of 10 percent or greater gas-in-air in any area continuously paved from the curb to the building wall, which is more than five feet (1.5 meters) but within 30 feet (9.1 meters) of the building and inside the curbline or shoulder of the road;
(2) any reading, in an unpaved area, of 20 percent or greater gas-in-air which is more than 5 feet (1.5 meters) but within 20 feet (6.1 meters) of the building and inside the curb or shoulder of the road; or
(3) any leak, other than Type 1, which, under frost or other conditions, in the judgment of the operating personnel at the scene should be classified as a Type 2A.