Dust and Hazardous Materials Control Program
Hazardous Materials Removal Prior to Demolition
In advance of commencing demolition on Yerba Buena Island and Treasure Island, TICD completed a hazardous material abatement plan to guide the selected Contractor on how to abate the hazardous materials prior to be beginning the structural demolition. Bay Area Air Quality Management District (BAAQMD) issued the permit for removal of asbestos-containing building materials.
Dust Control Plans
In advance of DBI issuing TICD a demolition permit, DPH reviewed and approved a Dust Control Plan for the Yerba Buena Island and Treasure Island demolition projects, which provides specific work practice requirements to all contractors at the site. These include wetting practices and containment of storage piles to prevent visible dust and the migration of dust beyond the worksite.
The Dust Control Plan for Yerba Buena Island and Treasure Island requires TICD to use qualified third party environmental consultants to provide regular and variably scheduled worksite inspection of required dust control practices by contractors. Whenever the third party observes a deficiency in work practices, they must immediately inform the contractor superintendent onsite to correct those practices.
Particulate Matter/Dust Monitoring (PM-10 monitors)
The YBI Dust Control Plan requires a third-party environmental consultant to use monitors with optical detection of specific-size particulate matter at several locations around the demolition site perimeter to continuously measure levels of particulate matter that are less than 10 microns in diameter. The monitoring serves as another means to ensure that contractor dust control practices are consistent over time, and to flag specific dates and times when dust control practices should be examined in order to implement improvements.
PM-10 readings above the established action level do not indicate an immediate health risk to the public. An elevated reading will flag one of two possibilities: 1) A date and time when dust control practices were not effective and should be examined in order to implement improvements or 2) A date and time when an environmental event unrelated to the job site affected all monitors at once. Such events may include the optical detection of fog mist (high humidity) rather than dust particles, or passing vehicle emissions from public roadways.
Treasure Island Community Development Construction Hotline
Members of the Island community and the general public are encouraged to call the Treasure Island Community Development (TICD) Construction Hotline whenever they are concerned about visible dust or improper development construction project contractor practices. Those calls will have immediate response through TICD’s oversight and the caller will hear back from TICD within 48 hours.