OSHA Crane Inspection Report and Analysis Oct 2001

NYC 9/11 Public Portal Document Fax: Oct 17 2001 22:14 P.03 |9/iyzoi XT;21 FAl 212 337 2371 usnoL osha Slooizooi

05HA SAMPLING RESULTS SUMMARY AS OF 10/18/01

Asbestos: A total of478 ah monitoriag samples for asbestos have been taken. From 9/13 *9/22, 177 samples were taken in foe fininoial district They were taken on OSHA personael as they walked witiun certain pnedetenoised zcoes, Results revealed asbestos eoncennations rauriag from 1^ to .037 free., well below OSHA's psimisaTble ' exposure limit (PH.) of .1 free. After 9'22, sampiiag focused os foe rabble pile (foe keystone area of foe map) where 32 of 210 samples exceeded OSHA's limit via PCM analysis. However, upoo forfocr analysis using diseximinating counting methods aad/or TEM analysis, foe number of asbestos fibers found droppM dtamsUMlly to below detectable levels or well below .1 e'en. Seranling at Pier 25 where trucks earryins debris are being off loaded by crane to barge revealed no detectable asbestos

Carboa Moaoxide: Thirty one personal ssunple? for woikers on the nibble pile showed results rangmg from 1 ppm to 34 ppm well below the OSHA SO ppm permissible exposure limit NoisB! OSHA has been conducting noise monitoring io die rabble pile (die keystone area of die map). Three personal saraplas have been conducted on employees performing (or working near) various derations such IS jackbaramering. Employee’s expoBuro to noise ranged from 88 dBA to 89 dBA. OSHA's pcanisswle noise exposure limit for construction is 90 dBA Saica: As of October Ithe overwhelming m^'oiiiy of the 159 silica samples show no detestable levels of airborne siliceL ’Die highest sample result was approximately twice the OSHA limit, whereas the next hipest level was less than half or bus limit. Both of these levels were found on personnel woddng in the rubble pile, an area where OSHA continues to encourage ths use of respiramry protection. Volatile OrgRflJc Compouads! As of October 16*. OFHA has taken 120 sample for volatile organic compounds (VOCs) such as acetaldehyde, scrylmitrile, acrolrin. beozeas. 2^utanone, chlorodlphsnyl (FOB), dioxin, sfriyl benzene, formaldehyde, hexone, isocyanates, percbloroethylent, r^eae, toluene, trichloroefoylene, vmyl chloride and xylene. Screening sarcples iiutially showed elevaied levels of some organic chsmioals resultmg from foe fires bunting in the rubble pile. Subsequent personal samsles at breathing zone level and am Eamples show worker ejqjosura levels to be below OSHA limits. However, one personal sample result for benzene was found at foe 8br OSHA allowable limit concentration of Ippm. This exposure was found on a backhoe operator moving debris on foe pile. Metals: OSHA has taken 218 air samp les to monitor worker exposures to dusts, fumes, oxides, and other compounds of metals such as antimony, beryllium, ohromiuin. cobalt, copper, iron, lead, manganese, molybdenum, nickel, vaoadiutu, zinc, cadmium, ma^esium, arsenic, and mercury. Results from these samples are ^orally well below foe applicable OSHA limits. However, torch cuttiag and burning structural steel at foe pile have resulted in instances of over-exposnrt as follows: copper (6); iron oxide (6): lead. (1); and cadmium (3). Accordingly, OSHA is rscommanding that work^ engaged in these operations continue w wear impropriate respiratory proteodon.

Other Analysis; OSHA has sampled &r dioxin, isocyanates, polysttdeated aromatics and oxides of citrogcai. Analysis is pending-

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