NYC-WTC_000233916

NYC 9/11 Public Portal Document

Cusfomer-Facused SqIu Fons 1430 Broadway, 10th Fl. New York, New York 10018 Phone: (212) 221-7822 - Fax: (212) 221-7840

LMDC Air Metals Profile

Client Lower Manhattan Development Corporation Job Number 46600-0000-00001 Address One Liberty Plaza, 20th Floor Date Received 4/29/2005 New York, NY 10006 Date Analyzed 4/29/2005 Collected By K. Darocha Job Location 130 Liberty Street Collected 4/28/2005 Potometer Standard

Lab ID 010501583-0001 Matrix Air Field ID M-042805-565 Location Washington Street/Albany Street

Parameter Start End Flow Volume Result Units MDL MCL Flag Barium, Total 16:02 16:01 4 5756 <0.87 gg/m3 0.8700 500 Beryllium, Total 16:02 16:01 4 5756 <0.035 gg/m3 0.035 1 Cadmium, Total 16:02 16:01 4 5756 <0.035 gg/m3 0.035 3 Chromium, Total 16:02 16:01 4 5756 <0.087 gg/m3 0.087 500 Copper, Total 16:02 16:01 4 5756 <0.17 gg/m3 0.17 500 Lead, Total 16:02 16:01 4 5756 <0.087 Hg/m3 0.087 30 Manganese, Total 16:02 16:01 4 5756 <0.13 gg/m3 0.13 1000 Nickel, Total 16:02 16:01 4 5756 <0.17 gg/m3 0.17 500 Zinc, Total 16:02 16:01 4 5756 <0.17 gg/m3 0.17 2500

Lab ID 010501583-0002 Matrix Air Field ID M-042805-566 Location Albany Street/Greenwich Street

Parameter Start End Flow Volume Result Units MDL MCL Barium, Total 16:05 16:04 4 5756 <0.87 gg/m3 0.8700 500 Beryllium, Total 16:05 16:04 4 5756 <0.035 gg/m3 0.035 1 Cadmium, Total 16:05 16:04 4 5756 <0.035 gg/m3 0.035 2.5 Chromium, Total 16:05 16:04 4 5756 <0.087 gg/m3 0.087 500 Copper, Total 16:05 16:04 4 5756 <0.17 gg/m3 0.17 500 Lead, Total 16:05 16:04 4 5756 <0.087 gg/m3 0.087 30 Manganese, Total 16:05 16:04 4 5756 <0.13 gg/tTi3 0.13 1000 Nickel, Total 16:05 16:04 4 5756 <0.17 gg/m3 0.17 500 Zinc, Total 16:05 16:04 4 5756 <0.17 gg/m3 0.17 2500

MDL = Minimum Detection Limit MCL = Maximum Contaminant Level > MCL = Exceeds Maximum Contaminant Level Samples analyzed by EMSL Analytical, Inc.; NY ELAP ID# 10872 and 11506 Page 1 of 3

CITY_21MC100_003217671

NYC-WTC_000233916