EPA memo re: asbestos assessment and Superfund advantages, Jan 2002

NYC 9/11 Public Portal Document

TABLES - LOWER MANHATTAN ASBESTOS DATA Note: The total asbestos levels found in Manhattan by the Ground Zero Task Force study are much higher. The reason why only the “PCM-equivalent” asbestos levels are given in the tables below is to make comparison with the Libby data possible. See the explanation at the beginning of this memo.

SETTLED ASBESTOS DUSTS, BUILDING INTERIORS PCM-equiva lent MANHATTAN structures per square Fibers and Bundles (Structures) Longer than 5 Micrometers centimeter (s/cm^)

Ground Zero Task Force Study,®® data from Table 21. HIGH EXPOSURE BUILDING, BEFORE CLEANUP, 250 South End Ave. Fibers and bundles longer than 5 micrometers. Heavy visible dust layer, could still read addresses on envelopes on table and see the lines on a yellow legal pad on the table. Windows had been blown outfrom some apartments. [Note Table 21 says fibers/cm^ , but title of table is “fibers plus bundles”, which equals structures.] TEM analysis using American Society for Testing and Materials ASTM D6480-99.

250SEA-10D-D1 (A) (sample collected with toothbrush sample) top of cupboard with 21,000 glass doors

250SEA-10D-D1 (B) (wipe sample) top of cupboard with glass doors 19,000 250SEA-10D-D2 (A) (sample collected with toothbrush) living room high boy side table 18,000 250SEA-10D-D2 (B) (sample collected with toothbrush) living room high boy side table 28,000

Ground Zero Task Force Study,” data from Table 19. LOW EXPOSURE BUILDING. BEFORE CLEANUP, 45 Warren St., dust layer visible on dark table, grain of wood stiH visble. 5 blocks from Ground Zero, building faced north away from Ground Zero. Only light dusting. See photo in study itself. Fibers and bundles longer than 5 micrometers. [Note Table 19 says fibers/cm^ , but title of table is “fibers plus bundles", which equals structures] TEM analysis using American Society for Testing and Materials ASTM D6480-99.

45WAR-2-D1, 2nd floor, living room table near window, wipe sample 2,300

45WAR-2-D2. 2nd floor, living room window sill, wipe sample 60,000

45-WAR-5-D1, 5th floor, living room, window sill, wipe sample 79,000 45-WAR-5-D2, Sth floor, roof level office, green wooden chair, wipe sample 22,000 NY Environmental Law and Justice Project. 105 DUANE ST, AFTER CLEANUP.** Microvacuum method followed by American Society for Testing and Materials ASTM D-5755.

Sample inside central air conditioning duct. Total asbestos concentration reported as 111,000 555, 000 s/cm®. Estimated that 20% of the structures are over 5 micrometers, or 111,000 s/cm®

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