10/08/2021
The Asbestos Beneath Our Streets. Removal of Buried Asbestos Pipes Presents Many Hazards to Workers and the Public.
At one time in the United States, the use of buried asbestos cement (AC) pipe in drinking water distribution systems, storm drains and sewers was very popular. Today these old systems are frequently being replaced. Dealing with the hazards associated with buried pipe removal must be done right. Workers need appropriate training for handling asbestos AND in trenching safety. Excavation and trenching are among the most hazardous construction operations. OSHA Excavation standards 29 CFR Part 1926, Subpart P, contain requirements for excavation and trenching operations. Cave-ins pose the greatest risk and are more likely than some other excavation-related incidents to result in worker fatalities. Workers need to understand trenching hazards and have appropriate training.
Generally, mechanical excavation equipment may be used to excavate soils to within 6 inches of the buried asbestos pipe. Then manual excavation methods must be used to adequately expose the pipe subject to abatement. All workers must be certified in accordance with NYS, OSHA and USEPA requirements. No dry disturbance or removal of asbestos material shall be permitted. Air monitoring by an independent 3rd party is required during removal activities. After removal and cleanings are complete, the 3rd party Project Monitor shall determine if the area is dry and free of visible asbestos debris. The waste dumpster must be sealed air, dust and water tight utilizing six-mil plastic, duct tape, and/or expandable foam and then appropriately labeled for transport. In NYS a site specific variance from NYSDOL is required before any work can proceed.
For worker training in trenching and excavation hazards or 3rd party asbestos air monitoring or inspection services contact your local Certified Industrial Hygienist (CIH) at CanAm Environmental Safety, Inc. www.canamenv.com. "We know what it is".