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OSHA Crane Inspection Report and Analysis Oct 2001

Machine-extracted title · confidence 94%

Joint OSHA and Bechtel crane inspection report analyzing safety conditions at the World Trade Center site.

NYC-WTC_000149936–000149977

Folder label: “OSHA_COSH

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z Z

o o i ATC/Uberty Mutual Quantifiable Hydrogen Sulfide Air Sample Results co

U o c o CT o o' -P- CD Time-Weighted Average Sample Data U O CD 3. -IS- 03 Sample Shift Adj. % Shift Adj Sample ID Zone Job Description Begin Time End Time Worker Analyte Results OEL %OEL O Number OEL OEL o o c 2' from Sewer Opening. 3 WTC-BO-CD- 12/8/2001 12/9/2001 Time-Weighed Hydrogen 1 TWA BO By handrail to Grace 16 ppm 10 10 160.00% 160.00% Q 011208-09 9:37:00 PM 9:38:00 AM Average Area Sample Suifide 3 Trailer WTC-BO-CJ-H- Labor on Gate Ent SW 12/31/2001 12/31/2001 Hydrogen 2 TWA BO Worn by Worker 0.14 ppm 10 10 1.39% 1.39% 011231-02 Comer Sewer 7:42:00 AM 2:51:00 PM Sulfide WTC-ER-RF-H- flagger by entrance to 2/15/2002 2/15/2002 Hydrogen 3 TWA ER Worn by Worker 0.12 ppm 10 10 1.21% 1.21% 020215-02 veseyst 7:42:00 AM 3:05:00 PM Sulfide

WTC-BO-RM-H- West & Vesey next to 2/8/2002 7:42:00 2/9/2002 3:00:00 Time-Weighed Hydrogen 4 TWA BO 0.11 ppm 10 10 1.11% 1.11% 020208-02 Verizon Bldg PM AM Average Area Sample Sulfide

45' North of sewer grate WTC-BO-RF— 12/8/2001 12/8/2001 Time-Weighed Hydrogen STWA BO on chain link fence In 0.094 ppm 10 10 0.94% 0.94% 011208-02 9:23:00 AM 9:30:00 PM Average Area Sample Sulfide Grace/Bovis Area

WTC-BO-CJ-H- Adjacent to guard booth, 12/31/2001 12/31/2001 Time-Weighed Hydrogen 6 TWA BO 0.088 ppm 10 10 0.88% 0.88% 011231-03 SW comer sewer. 7:43:00 AM 2:53:00 PM Average Area Sample Sulfide

WTC-AM-RF-H- nw Section of Ground 1/14/2002 1/14/2002 Time-Weighed Hydrogen 7 TWA AM 0.068 ppm 10 10 0.68% 0.68% 020114-02 Zero West St 7:42:00 AM 3:13:00 PM Average Area Sample Sulfide

WTC-BO-CJ-H- SW Comer Area Sample 1/13/2002 1/13/2002 Time-Weighed Hydrogen STWA BO 0.056 ppm 10 10 0.56% 0.56% 020113-02 Gate 8:09:00 AM 3:21:00 PM Average Area Sample Sulfide

45' North of sewer grate WTC-BO-MA— 12/8/2001 12/9/2001 Time-Weighed Hydrogen 9 TWA BO on chain link fence in 0.055 ppm 10 10 0.55% 0.55% 011208-08 9:35:00 PM 9:36:00 AM Average Area Sample Sulfide Grace/Bovis Area

WTC-BO-CJ-H- Worker SW Comer 1/7/2002 8:25:00 1/7/2002 3:55:00 Hydrogen 10 TWA BO Worn by Worker 0.0040 ppm 10 10 0.04% 0.04% 020107-02 Grace/Bovis AM PM Suifide

Direct Reading Instrument Data SW comer, near Grace Instantaneous Area Hydrogen 1 DR Direct Reading 2/22/2002 2/22/2002 22 ppm 10 10 220% 220% Trailer Sample Sulfide

Front of Bankets Trust Instantaneous Area Hydrogen 2 DR Direct Reading 2/27/2002 2/27/2002 15 ppm 10 10 150% 150% Southern Patt Slurry Wall Sample Sulfide SW comer, near Grace Instantaneous Area Hydrogen SDR Direct Reading 2/22/2002 2/22/2002 8 ppm 10 10 80% 80% Trailer Sample Sulfide Instantaneous Area Hydrogen 4 DR Direct Reading Wests Liberty 2/28/2002 2/28/2002 4 ppm 10 10 40% 40% Sample Sulfide Instantaneous Area Hydrogen SDR Direct Reading South SiurryWali 2/22/2002 2/22/2002 2 ppm 10 10 20% 20% Sample Sulfide

3/7/2002 Pagel

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NYC-WTC_000149974Source: NYC Law Department, mirrored locally

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