10. Some common outdoor spaces (i.e. alleys, yards, setbacks) may be included in this clean-up. They have been
included in the quantity estimates and shall be cleaned using the same procedures as the roof clean-up.
11. Air Monitoring shall be performed by NYSDOL licensed a Third Party Air Monitoring firm with certified
workers. The Third Party Air monitoring firm shall perform a visual inspection to confirm the absence of
ACM or debris after the areas are completely dry. Clearance air monitoring shall not be required if all samples
collected during the work were found to be below 70 s/mm2.
Agreement between the City of New York and a landowner regarding the removal of foreign material from building facades near the former World Trade Center.