Air sampling protocol document, 130 Cedar Street, Jan 2005

NYC 9/11 Public Portal Document

Air Sampling and Monitoring Protocol Site: 130 Cedar Street Prepared for Masterworks Development and Service Contract. Emergency Air Monitoring at the World Trade Center Site. Ah 114 Liberty Street)

c) Continuous/During Samples:

Exterior mples will be collected for Particulates (as TSP's), Metals (as TSP's), , D/Fs, PCBs, Mercury (Hg), Silica (Si) and Asbestos. Real time particulate monitoring will be cndaeted"at the four exterior sampling locations for PM10 (particulate matter of less then 10 microns in size).

During work activities, ambient asbestos air sampling will be conducted for one (1) eight (8) hour period each day. These samples will be edy PCM with FREDof the total reanalyzed by TEM analysis___ __ Clearance Samples:

Interior samples , asbestos will be collected as per federal, state and local °" ~ regulations by with 5% of the total reanalyzed by TEM analysis. Silica ~.~J samples will be collected and analyzed from each work location. r ✓~ r'

nterio. ; pe samples for RCRA rtals, D/Fs, PCB f. Mercury (Hg), Silica (Si) A' will be collected (see background/am t sampq ection D, parts a

-& £)-Sampling and Monitoring ' £)-Sampling

1. Continuous Monitoring: The monitors selected to continuously measure PM10 during the exterior facade deconstruction work shall be beta-attenuation monitors • or an equivalent, acceptable method. Real time monitors are currently not an EPA reference method, one reference method PM1Q sampler will be co-located along side the real-time PM10 as a quality assurance (QA) check. This QA sampler will be rotated daily through all real-time PM10 monitoring locations for the duration of the sampling period.

2) Integrated Samplers: The monitors selected to measure TSP's, Metals and Silica shall be Federal Reference Method (FRM) samplers or an equivalent methodology. These are the samplers that are routinely used by USEPA and state agencies to measure compliance with ambient air quality standards. The TSP's are collected on an 8-inch x 10-inch micro quartz filter. The sampler flow rate is aenera_lly_set.a run at 40 actual cubic_feetper_minuteIacfmLand held at a constant flow rate by a volumetric flow orifice for the sample period. TSP filters will be analyzed using Inductively coupled plasto spectroscopy (ICP) fore eight RCRA metals.

3) Asbestos Sampling Units: Asbestos samples will be collected according to NIOSH 400using Phase Contrast Light sampling media is a t

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