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EPA memorandum on WTC environmental data concealment, July 2004

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EPA internal memorandum addressing allegations that NYC and EPA concealed environmental data following 9/11, with evidence not previously evaluated in an August 2003 EPA Inspector…

NYC-WTC_000153780–000153811

Folder label: “WORLD TRADE CENTER - JOHN LADUCA FILES

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NYC 9/11 Public Portal Document

APPENDIX

COMPARISON OF TWO VERSIONS OF SAME NYC ASBESTOS AIR DATA

11/13/01 VERSION versus NYC DEP 2002 WEB SITE VERSION

Electron microscope (TEM) asbestos air test by the NYC Department of Environmental Protection (DEP) after 9/11. Two different versions of same data, from two sources described in greater detail at end of this table.

Only sampling locations included are those where electron microscope (TEM) asbestos data was provided in the NYS DEC FOIL response, which were from 9/12/01 to 9/29/01. There were light microscope asbestos (PCM) results for additional locations and days, but are not included here.

6 2 H c ' o LU -5 _ p UJ _i C tQ .38 LOCATION w E COMMENTS l/i

9/12/01________________________________________________ NYS DEC 11/13/01 FOIL RESPONSE VERSION OF NYC DATA 1 W.BROADWAY & WORTH ST. 11.25 9/12 was only day where this location was sampled._______ 2 ■ BROADWAY & WORTH ST. 44.99 9/12 was only day where this location was sampled._______ 6 ' GREENWICH & CHAMBERS overload "Overload" means that there was so much material on the ST. sampling device, the laboratory could not make out the __ IcENTRE & CHAMBERS ST.“^ 123.73 123.73 data as well as sampling location deleted in NYC ISPRUCE & GOLD ST. 157.48 157.48 data as well as sampling location deleted in NYC NYCWEBVERSIONOFITSOWNDATA(riolpostedonitswebuntilafter2/2/0^ 1 W.BROADWAY & WORTH ST 11.25 2 BROADWAY & WORTH ST 44.99 6 GREENWICH & CHAMBERS Overload 9/13/01________________________________________________ NYS DEC 11/13/01 FOIL RESPONSE VERSION OF NYC DATA 12 MURRAY & CHURCH ST. overload "Overload" (meaning too high a level to even quantify) data deleted in NYC web version 21 FULTON & CHURCH ST. overload "Overload" (meaning too high a level to even quantify) data deleted in NYC web version___________________ NYC WEB VERSION OF ITS OWN DATA (not posted on its web until after 2/2/02) 25 LIBERTY & CHURCH ST. [left blank in web version] 28 WASHINGTON & CEDAR ST. [left blank in web version] 9/14/01________________________________________________ NYS DEC 11/13/01 FOIL RESPONSE VERSION OF NYC DATA 15 PARK & GREENWICH ST. - not detected, APPROX. 50 FT. FROM <6.56 25 LIBERTY & CHURCH ST. 4.32 4.32 data deleted from NYC web version Z2a 29 CEDAR & TRINITY PL. [same overload as Trinity PI. & Thames] NYC WEB VERSION OF ITS OWN DATA (not posted on its web until after 2/2/02) 15 PARK PL. & GREENWICH NA 25 LIBERTY & CHURCH ST. [left blank in web version] 29 TRINITY PL. & THAMES ST. Overload

NYC-WTC_000153797

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