A DEPARTMENT OF THE STATE OF LOUISIANA

AIR

Insignificant Activity under LAC 33:III.501.B.5 FAQs

Does miscellaneous sandblasting in LAC 33:III.501.B.5.B.3 include blasting with abrasives other than silica sand?

Yes. Miscellaneous sandblasting associated with miscellaneous equipment maintenance or construction as defined in 501.B.5.B.3 includes other abrasives, including slag, iron, and steel shot, synthetic abrasives, and mineral abrasives.

Does miscellaneous equipment maintenance in LAC 33:III.501.B.5.B.3 include cleaning by methods other than those identified (steam cleaning, acid and caustic washing, water blasting)? For example, is the use of detergents included?

Yes. Cleaning with water, soaps or detergents, associated with miscellaneous equipment maintenance or construction as defined in 501.B.5.B.3, is included, provided no organic solvent has been added to the water.

Does miscellaneous equipment maintenance in LAC 33:III.501.B.5.B.3 include general vehicle maintenance and servicing activities, for example, replacement of fuel filters or fuel lines?

Yes.  However, this exemption does not cover fueling operations or fuel storage tanks covered by LAC 33:III.Chapter 21.

Does miscellaneous equipment maintenance or construction in LAC 33:III.501.B.5.B.3 include activities associated with construction, repair, maintenance or dismantlement of buildings, utility lines, pipelines, or other structures that do not constitute emission units, including use of equipment such as welding machines, cutting torches, and backhoes?

Yes, provided that these activities are not associated with a proposed facility or facility modification for which a permit is required and not yet issued.  In this case, these activities would be considered "commencement of construction", which is prohibited prior to receipt of a permit.  For a project subject to permitting, construction is prohibited on the affected emissions unit and on any installation designed to accommodate the emissions unit.  Is the miscellaneous construction, maintenance or dismantlement of "buildings, utility lines, pipelines" occurring because of an upcoming project, which will require a permit or permit modification?  If the answer is "yes", then these activities do not qualify as an insignificant activity under LAC 33:III.501.B.5.

Does miscellaneous equipment maintenance or construction in LAC 33:III.501.B.5.B.3 include construction, repair, or maintenance of roads or other paved or open areas, including operation of equipment such as street sweepers and spray trucks?

Yes

Are settling aids included in storage or use of water-treating chemicals as defined in LAC 33:III.501.B.5.B.8?

Yes