WTC emergency safety plan draft, Sept 2001

NYC 9/11 Public Portal Document

World Trade Center Emergency Project Environmental, Safety, and Health Plan Draft - Revision A 30 September 2001

determine any special requirements or variations to established methods necessary to collect an acceptable sample.

Sampling and analytical information for personal sampling shall be recorded on the Air Monitoring Data Sheet (or equivalent) shown in Figure 2.4-2. Data sheets and the corresponding laboratory analytical reports shall be submitted to the DCC/Site ES&H director as part of the weekly safety report.

2.4.3.3 Noise Monitoring Noise monitoring shall be conducted for operations, which may exceed an 8-hour time weighted average sound level of 85 dBA (Refer also to Section). Noise monitoring shall be performed in accordance with 29 CFR 1910.95 using a SLM or noise dosimeter as appropriate.

2.4.3.4 Heat Stress Monitoring Heat stress monitoring shall be conducted as necessary to assist in determining and maintaining appropriate work/rest regimens. Periodic physiological monitoring (e.g., pulse rate and oral temperature) may be used to verify effectiveness and modify work/rest regimens as needed.

2.4.4 Other Site Monitoring

Other site monitoring may be necessary depending on the job task or site location of the work. The contractor performing work at the WTC is responsible for identifying and implementing any additional site monitoring necessary to adequately assess and control worker exposure.

2.4.5 Data Quality Assurance

2.4.5.1 Training Persons conducting site monitoring shall have adequate training and/or experience commensurate with the type and complexity of the monitoring program. They should be able to understand the limitations of the equipment they use proper methods of calibration, proper methods of sealing and shipping samples and the importance of chain-of-custody.

2.4.5.2 Calibration All instruments shall be calibrated (or checked for proper function if appropriate) before use for each shift. Instrument calibration shall be documented on sample data sheets or in logbooks. Calibration checks may be necessary during the day and at the end of use to confirm instrument accuracy. Duplicate readings may be taken to confirm individual instrument response. Air sampling pumps will be calibrated with primary standards (e.g., dry calibrator or bubble-tube method).

2.4.5.3 Operation and Maintenance All instruments shall be operated and maintained in accordance with the manufacturer’s specifications. The manufacturer’s operation and maintenance manual will be kept at the site work location for each type of instrument that is being used.

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NYC-WTC_000164699