255.815 Leaks: type 2 classification.

(a)A type 2 leak does not present an immediate hazardous condition to the public or buildings, but is of a nature requiring scheduled repair.#

(b)Type 2 leaks shall be repaired within a period not to exceed one year, except that leaks classified under paragraph (d)(5) of this section shall be repaired within six months.#

(c)Type 2 leaks shall be maintained under surveillance with a frequency not to exceed two months, except that leaks classified under paragraph (d)(5) of this section shall be surveilled every two weeks.#

(d)Type 2 leaks include, but are not limited to:#

(1)any reading less than 10 percent gas-in-air between the building and the curbline in any area continuously paved 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; or#

(2)any reading less than 20 percent gas-in-air in any unpaved area which is more than five feet (1.5 meters) from but within 20 feet (6.1 meters) of a building and inside the curbline or shoulder of the road; or#

(3)any reading of 30 percent or greater gas-in-air in an unpaved area which is more than 20 feet (6.1 meters) from but within 50 feet (15.2 meters) of a building and inside the curbline or shoulder of the road; or#

(4)any reading of 30 percent or greater gas-in-air in a paved area which is more than 30 feet (9.1 meters) from but within 50 feet (15.2 meters) of a building and inside the curbline or shoulder of the road; or#

(5)any reading above one percent but below four percent gas-in-air, within manholes, vaults or catch basins (sampling will be conducted with the structure in its normal condition as nearly as is physically possible).#