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← Document results/DEP Box 33/75 MAIDEN LANE Block: 68 Lot: 11 BIN: 1001112 9-11 Gold Street
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Invoice for window and ledge cleaning, 75 Maiden Lane, Feb

Machine-extracted title · confidence 95%

Contractor invoice for window and ledge cleaning at 75 Maiden Lane following the WTC incident, dated February 2002.

NYC-WTC_000097310–000097314

Folder label: “75 MAIDEN LANE Block: 68 Lot: 11 BIN: 1001112 9-11 Gold Street

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NYC 9/11 Public Portal Document

SEPTEMBER 1 9, 2001

MR. JACK,CONSTANTINE THE MEDIA TECHNOLOGY CENTERS 80 MAIDEN LANE NYC, NY 10038

RE: AIR QUALITY TESTING

NORTH ATLANTIC LABORATORIES, INC. HAS CONDUCTED PRELIMINARY AIR QUALITY TESTING FOR ASBESTOS, METHANE AND HYDROGEN SULFIDE AT 75, 80, AND 90 MAIDEN LANE.

THE METHODOLOGY FOR ASBESTOS WAS USING PHASE CONTRAST MICROSCOPY (PCM) UNDER THE NIOSH 7400 METHOD. ALL SAMPLE CONFORM TO THE OSHA PERMISSIBLE EXPOSURE LIMIT OF 0.D FIBERS PER CUBIC CENTIMETER OF AIR (F/CC).

METHANE AND HYDROGEN SULFIDE TESTING WAS CONDUCTED USING A VRAE, P6M7800, MULTI GAS METER LAST CALIBRATED TO ZERO GAS ON SEPTEMBER 1 7, 2001

TYPEWRITTEN RESULTS FOR PCM SAMPLE ANALYSES ARE PENDING FROM SCIENTIFIC LABORATORIES, INC. A NYS ELAP CERTIFIED LABORATORY.

IF YOU SHOULD HAVE ANY QUESTIONS REGARDING THIS REPORT, PLEASE DO NOT HESITATE TO CONTACT OUR OFFICE.

RESPECTFULLY SUBMITTED,

NORTH ATLANTIC LABORATORIES, INC.

JOHN J. PACIULLI, PRESIDENT

NYC-WTC 000097312

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NYC-WTC_000097312Source: NYC Law Department, mirrored locally

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