EPA WTC Residential Cleaning and Testing announcement, September 2002

z EPA Response to 9-11: WTC Residental Cleaning and Testing Progress 10/17/02 Page 1 of2 z o o co

o U,S, Environmental Protection Agency ■D c o CT o EPA Response to September 11 o' ■D o IM Recent Additions | Contact Us | Print Version Search: I o Egg 3. 03 EPA Home > Response to 9-11 > Fact Sheets >WTC Residential Testing Results o o o c 3 Dust Cleanup Request Form WTC Residential Testing Results CD

Request Counts The work of cleaning and testing residences in lower Manhattan (south of Canal Street) is underway. Depending upon the Follow Up assistance requested, EPA is arranging for licensed contractors to clean and/or test residential units (fact sheet) for asbestos in Map air. There is no charge for this service. Requests for assistance will be accepted until December 28,2002 via the Web or by Fact Sheets / calling EPA's toll-free World Trade Center hotline (1-877-796-5471). Scopes "Asbestos in air test results for individual residences are provided only to residents of the affected unit. Aggregate test Frequently results are provided here. The locations of residences that have cleared or not cleared EPA's testing criteria will be identified by Asked block" Questions Ads & Flyers EPA is committed to setting the most stringent standards that can be technically achieved when testing residences for asbestos EPA Press in air. We have set an initial risk-based clearance level for asbestos of 0.0009 fibers per cubic centimeter (f/cc). This means Releases that if 10,000 people are exposed to this level of asbestos for 30 years, there may be one more case of cancer than if the group had not been exposed at all. Pictures The EPA Testing for asbestos (fact sheet) in air calls for moving a measured volume of air across a filter, then examining that filter under Experience a microscope equipped with a grid and counting the number of asbestos fibers found. Problems arise when too many dust and Monitoring fiber particles are captured by the filter. The filter becomes overloaded and technicians examining it under the microscope Summaries cannot separate out or identify individual fibers. Residences where this occurs are listed as "Not Determined." In a residence New York City where only testing was conducted, EPA recommends that the home be cleaned and re-tested. In a residence where both Area cleaning and testing were done, EPA will attempt to identify potential sources and will then re-clean and re-test the home. Pentagon Monitoring Data Test results below reflect analytical results received through October 17. During the initial stage ofcleaning and testing, results Asbestos in will be updated on a weekly basis. Once data flow is established, this table will update automatically as test reults are entered. Air Asbestos in Bulk Dust Test Only Benzene in Air Chromium in Quadrant (Map) Total Requests Cleared Not Cleared Not Determined Air Dioxin in Air A 260 22 i i Drinking Water B 258 24 6 2 Lead in Air Metals in Air C 250 32 2 2

http://www.epa.gov/wtc/factsheets/clean_test_results.htni 10/23/2002