Before beginning the renovation, the firm must isolate the work area so that no dust or debris (including in the waste water) leaves the work area while the renovation is being performed. In addition, the firm must maintain the integrity of the containment by ensuring that any plastic or other impermeable materials are not torn or displaced and taking any other steps necessary to ensure that no dust or debris, including water, leaves the work area while the renovation is being performed.
Some recommended options to prevent contaminated water from leaving the work site include:
- Stop work and clean up the work site before rain begins. Proceed with interior work only.
- Cover the area with a tarp to deflect the rainwater away from the work site.
- Collect the water and dispose of it. Check with your local water treatment authority for local requirements for handling and disposing of waste water.