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← Document results/DEP Box 03/2002 E-Mail Sent M. Gilsenan
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Forwarding WTC air monitoring scope for final review, Aug 2002

Machine-extracted title · confidence 95%

DEP official requests final review of the latest air monitoring Scope of Work to conclude negotiations.

NYC-WTC_000139257–000139330

Folder label: “2002 E-Mail Sent M. Gilsenan

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NYC 9/11 Public Portal Document

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Asbestos/MMVF f'cc % by weight Metals' & Mercury ug/m^ ug/m^ ug/m^ mg/kg Silica, calcite, gypsum N/A mg/m^ mg/m’ % by weight ' Report lead as both ug/m^ and ug/fV.

6) Due to the sensitive nature of this project, all data is to be reported on time. Should data be received beyond the due date the laboratory shall assume the appropriate late charges as agreed between the Contracting Officer and Region 2.

7) Data turnaround times shall be as follows.

Analyte Code Analysis Fields Collection Method Data Background and Residential Turnaround Asbestos* NIOSH7400PCM>5um Mico vacuum-ASTM D 24 hours 5755-95, wipe-ATSMD PCMe by TEM asbestos only > 5 um 6480-99, air-NIOSH 7400, Standard (3 days) and bulk TEMbyAHERA>0.5um

Dioxins EPA Method SW-846 8290 Wipe ASTM D 6661-01 and 14 days bulk

Total Dust EPA Method SW-846 8290 Wipe HUD Appendix 13.1 14 days

PAH EPA Method SW-846 8270C Wipe ASTM D 6661-01, 14 days bulk

Metals EPA Method SW-846 6010B Micro-Vacuum ASTM E 14 days 1973-99, Wipe HUD Appendix 13.1, Air NIOSH 7300, and bulk

Mercury EPA Method SW-846 7471A Wipe HUD Appendix 13.1, 14 days

Silica, Calcite, NIOSH 7500 (XRD) Wipe HUD Appendix 13.1, 21 days Gypsum Air NIOSH 7500, and bulk

MMVF EMSLMSD.0300 Collected with asbestos, 14 days Micro-Vacuum ASTM D 5755-95, Wipe ATSMD 6480-99, NIOSH 7400

MMVF PLMNYS 198.1/EMSLMSD.0300 Collected with asbestos, 14 days Bulk *PCM NIOSH 7400, TEM by AHERA method reporting both TEM and PCMe. Samples are collected using a 0.8 um filter pore size.

NYC-WTC_000139259

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NYC-WTC_000139259Source: NYC Law Department, mirrored locally

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