The removal or containment work referred to in this sub-section must be completed within thirty-six months of the date on which the owner receives the identification report or the results of the dust measurements or the last assessment of the state of preservation.
During the period preceding the work, appropriate precautionary measures are implemented to reduce the exposure of occupants and to keep it as low as possible, and in any event at a dust level of less than five fibres per litre. The precautionary measures must not lead to any stress being placed on the materials and products affected by the work.
The owner must inform the prefect of the département in which the building in question is located, within two months of the date on which the survey report or the results of the dust measurements or the last assessment of the state of conservation are submitted, of the precautionary measures implemented and, within twelve months, of the work to be carried out and the proposed timetable.