NYC-WTC_000203501

NYC 9/11 Public Portal Document

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INDIBTRIAL HYGIENE ENVIRONMENTAL TESTING •ePA PA-00130 *IV DOH/NELAC 10908 •rs0t>EPPA<»20 44ia PMtawiiie Pike Readinp, PA 1«SM .AIHAAOCREDITATIONNO. 100499 *A DEP 06-353 .CT OPH Pl+0238 (Tel) »1»-»11-««3J fFind nAkai.»CS7 •NCDENRS99

Certificate of Analytical Results for ATC Associates WorkOrder: R02120690 Client Reference: PS 234M - 19125-279

Analyte Concentration Limit of Test Date Analyzed Detection Method /Analyst (ng) ; (mg/mQ ; (ppm) (ug)

Client IP: ATC-t223-234M-Sl Lab ID; -01A Date Sampled: 12/23/200 Matrix: Filter Air Vol.(L): 1020 Total ParticoJate Matter <50 0 <0.0490 50 NOSOO 12/30/2002 SUB

Silica (Quartz-Total) <100 <0.00980 10 AIRBORNE SILICA 12/30/2002 SUB

Client ID: ATC-1223-234M-S2 Lap ID: -02A Date Sampled: 12/23/200 Matrix: Filter Air Vol.(L): 1020 Total Particulate Matter <60 0 <0.0490 50 NOS 00 12/30/2002 SUB

Silica (Quartz Total) <100 <0 00980 10 AIRBORNE SILICA 12/30/2002 SUB

Client ID: ATC-1223-234M-S3 Lab ID: -03A Date Sampled: 12/23/200 Matrix: Filter AirVol.(L): 1020 Total Particulate Matter <50.0 <0.0490 50 N0500 12/30/2002 SUB

Silica (Quartz Total) <100 <0.00980 10 AIRBORNE SILICA 12/30/2002 SUB

Client ID: ATC-1223-234M-S4 Lab ID: 4)4A Date Sampled: 12/23/200 Matrix: Filter AirVol.(L): 1020 Total Particulate Matter <50.0 <0.0490 50 N0500 12/30/2002 SUB

Silica (Quartz Total) <10.0 <0.00980 10 AIRBORNE SILICA 12/30/2002 SUB

Client ID: ATC-1223-234M-S5 Lab ID: -05A Date Sampled: 12/23/200 Matrix: Filter Air Vol.(L): 1020 Total Particulate Matter <50.0 <0.0490 50 N05O0 12/30/2002 SUB

Silica (Quartz Total) <10,0 <0 00980 10 AIRBORNE SILICA 12/30/2002 SUB

Client ID: ATC-1223-234M-S6 Lab ID: -06A Date Sampled: 12/23/200 Matrix: Filter AirVol.(L); 1020 Total Particulate Matter <50 0 <0 0490 50 N0500 12/30/2002 SUB

Silica (Quartz Total) <10.0 <0.00980 10 AIRBORNE SILICA 12/30/2002 SUB

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