NYC-WTC_000232037

NYC 9/11 Public Portal Document

AMBIENT GROUP, INC. 10 Morris Avenue, Glen Cove, NY 11542 Phone: (516) 671-2370 - Fax: (516) 609-8271 $ NY ELAP ID#1086.5

LMDC Air Metals Profile

Client: Lower Manhattan Development Corp. Job Number: 2043 Address: One Liberty Plaza, 20lh Hoor Date Received: 12/17/2004 New York, NY 10006 Date Analyzed: 12/17/2004 Collected By: Rotimi Adeola Job Location: 130 Liberty Street Collected: 12/15/2004 6:16 Lab ID: 0013507-001 Matrix: AIR Field ID: 27639-7 Location: Washington Street/

Parameter Start End Flow Volume Result Units MDL MCL Flag Barium 6:16 6:24 4 5792 <0.026 |rg/m3 0.026 500 Beryllium 6:16 6:24 4 5792 <0.017 Hg/m3 0.017 1.0 Cadmium 6:16 6:24 4 5792 <0.017 Ug/m3 0.017 2.5 Chromium 6:16 6:24 4 5792 <0.103 |rg/m3 0.103 500 Copper 6:16 6:24 4 5792 0.250 |rg/m3 0.175 500 Lead 6:16 6:24 4 5792 0.164 |rg/m3 0.095 30 Manganese 6:16 6:24 4 5792 <0.026 Pg/in3 0.020 1000 Nickel 6:16 6:24 4 5792 <0.060 |rg/m3 0.060 500 Zinc 6:16 6:24 4 5792 0.199 Hg/ni3 0.069 2500

Lab ID: 0013507-002 Matrix: AIR Field ID: 27634-8 Location: Albany Street/

Parameter Start End Flow Volume Result Units MDL MCL Flaa Barium 6:24 6:29 4 5780 <0.026 irg/m3 0.026 500 Beryllium 6:24 6:29 4 5780 <0.017 |rg/m3 0.017 1.0 Cadmium 6:24 6:29 4 5780 <0.017 |rg/m3 0.017 2.5 Chromium 6:24 6:29 4 5780 <0.103 Pg/m3 0.103 500 Copper 6:24 6:29 4 5780 0.190 irg/m3 0.175 500 Lead 6:24 6:29 4 5780 <0.094 |rg/m3 0.094 30 Manganese 6:24 6:29 4 5780 <0.026 |rg/m3 0.026 1000 Nickel 6:24 6:29 4 5780 <0.060 |rg/m3 0.060 500 Zinc 6:24 6:29 4 5780 0.121 Pg/ni3 0.069 2500

MDL = Minimum Detection Limit Page 1 of 3 MCL = Maximum Contaminant Level > MCL = Exceeds Maximum Contaminant Level

CITY_DEP_WORBY_CANNATA_SUBP_000071680

NYC-WTC_000232037