NYC-WTC_000199762

NYC 9/11 Public Portal Document

I Jessica Leighton - RA_sitrep01-04.wpc Page 2 ]

Fresh Kills (Dec 29, 0815 - 2136 hrs)

o All 18 samples analyzed were below the TEM AHERA standard. o 1 location (Location 0-18) was not sampled since access to that location was not available.

Fresh Kills (Dec 30, 0746 - 2132 hrs)

o All 15 samples analyzed were below the TEM AHERA standard. o 4 samples (Locations P-1, W-12A, W-12B, and B-14) were not analyzed due to overloading of particulates. o Note: Low sample volume recorded.

Fresh Kills (Jan 2) - Particulate Monitoring (Dataram)

o Nothing of significance reported at three stations (P-3, P-6, and P-8) based on daily average concentrations.

Ambient Air Sampling Locations

NYC / ER (January 3) - Particulate Monitoring (Dataram)

o Particulate levels noted at three locations (Stations L, N, R) were below the OSHA TWA. o Instruments operated approximately 6 to 7 hours. o Station L values ranged from 0.0 to 172.5 ug/nL with an average of 19.5 ug/m\ o Station N values ranged from 7.8 to 100.0 ug/m^ with an average of 15.6 ug/mL o Station R values ranged from 7.6 to 132.5 ug/m^ with an average of 18.4 ug/m\

NYC / ER (Jan 3) - Volatile Organics (Mobile Laboratory)

0 Benzene did not exceed OSHA TWA PEL (1 ppm) at any of the four locations monitored, including in the debris area at ground level. o Benzene was not detected above the detection limit (20 ppbv) in 2 of the 4 locations monitored (Washing Tent, Austin Tobin Plaza), including in the debris area at ground level.

Direct Reading Instruments

NYC / ER (Jan 3)

CITY_21MC100_002458878

NYC-WTC_000199763