15A NCAC 02N .0906. SPILL BUCKETS

(a)  Spill buckets shall be pre-fabricated with double-walled construction.

(b)  Spill buckets must be protected from corrosion by being constructed of non-corroding materials.

(c)  Spill buckets must be designed, constructed, installed and maintained to prevent water infiltration.

(d)  After installation but before backfilling, the primary containment and interstitial space of the spill bucket shall be tested in accordance with the manufacturers written guidelines and PEI/RP100, "Recommended Practice for Installation of Underground Liquid Storage Systems."  Any change in vacuum during a vacuum test or any change in liquid level in an interstitial space liquid reservoir beyond the limits specified by the equipment manufacturer shall be considered a failure of the integrity of the spill bucket. If the spill bucket fails a tightness test, it must be replaced or repaired by the manufacturer or the manufacturer's authorized representative in accordance with the manufacturer's specifications.  Following any repair, the spill bucket must be re-tested for tightness in accordance with the manufacturers' written guidelines and PEI/RP100, "Recommended Practice for Installation of Underground Liquid Storage Systems."

(e)  Spill buckets that are not monitored continuously for releases using vacuum, pressure or hydrostatic methods, must be tested for tightness every three years following installation.  The primary containment and interstitial space of the spill bucket shall be tested in accordance with the manufacturers' written guidelines and PEI/RP100 "Recommended Practice for Installation of Underground Liquid Storage Systems."  If the spill bucket fails a tightness test, it must be replaced or repaired by the manufacturer or the manufacturer's authorized representative in accordance with the manufacturer's specifications.  Following any repair, the spill bucket must be re-tested for tightness.  The last periodic tightness test record must be maintained at the UST site or the tank owner or operator's place of business and must be readily available for inspection.

 

History Note:        Authority G.S. 143-215.3(a)(15); 143B-282(2)(h);

Eff. November 1, 2007.