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