NYC-WTC_000234190

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#10865

LMDC Air Metals Profile

Client: Lower Manhattan Development Corp. Job Number: 2043 Address: One Liberty Plaza, 20th Floor Date Received: 01/04/2005 New York, NY 10006 Date Analyzed: 01/04/2005 Collected By: Ike Onyenyili Job Location: 130 Liberty Street Collected: 01/02/2005 7:02 Zn in Blank

Lab ID: 0013759-001 Matrix: AIR Field ID: 25235-7 Location: Washington Street/

Parameter Start End Flow Volume Result Units MDL MCL Fla& Barium 7:02 6:07 4 5540 0.614 ng/m3 0.026 500 Beryllium 7:02 6:07 4 5540 <0.017 ng/m3 0.017 1.0 Cadmium 7:02 6:07 4 5540 <0.017 Hg/m3 0.017 2.5 Chromium 7:02 6:07 4 5540 <0.103 ng/m3 0.103 500 Copper 7:02 6:07 4 5540 <0.175 ng/m3 0.175 500 Lead 7:02 6:07 4 5540 <0.095 ng/m3 0.095 30 Manganese 7:02 6:07 4 5540 <0.026 ng/m3 0.026 1000 Nickel 7:02 6:07 4 5540 <0.060 Hg/m3 0.060 500 Zinc 7:02 6:07 4 5540 0.081 ng/m3 0.069 2500

Lab ID: 0013759-002 Matrix: AIR Field ID: 25235-8 Location: Albany Street/

Parameter Start End Flow Volume Result Units MDL MCL Flaa Barium 7:09 6:11 4 5528 <0.026 Hg/m3 0.026 500 Beryllium 7:09 6:11 4 5528 <0.017 Hg/m3 0.017 1.0 Cadmium 7:09 6:11 4 5528 <0.017 ng/m3 0.017 2.5 Chromium 7:09 6:11 4 5528 <0.103 ng/m3 0.103 500 Copper 7:09 6:11 4 5528 <0.175 ng/m3 0.175 500 Lead 7:09 6:11 4 5528 <0.094 Hg/m3 0.094 30 Manganese 7:09 6:11 4 5528 <0.026 Hg/m3 0.026 1000 Nickel 7:09 6:11 4 5528 <0.060 ng/m3 0.060 500 Zinc 7:09 6:11 4 5528 <0.069 ng/m3 0.069 2500

MUL = Minimum Detection Limit Page 1 of 3 MCL = Maximum Contaminant Level > MCI, = Exceeds Maximum Contaminant t,evel

CITY_21MC100_003217010

NYC-WTC_000234190