Survey Results for Metals at 130 Liberty Street, 2001-2002

NYC 9/11 Public Portal Document

o 130 Liberty Street Bulk Heavy Metals Results Occupied Areas surveyed on September 28, 2001 tsS o o Air Plenums and Ducts surveyed January 16 to 19, 2002 K3

Elevators surveyed January 21 and 22, 2002 c»

o

Floor # Area

Occupied area Cadmium Chromium RangeofResultsJppm) Copper Lead Nickel Zinc Notes s 28 Return air plenum <0.341 - 2.92 27 - 383 51 -1680 <22.7 - 346 18.7-68 402 - 2840 hp o Supply air ducts fa. Occupied area 13.8-22 81 -67 371 - 678 189-318 11.7-56 1667 -1757 O> 27 Return air plenum <0.985- 18.3 15.1-488 16.1-392 4.23 - 303 <11.6-73 230 - 2140 I

Supply air ducts * Occupied area 26 Return air plenum <1.16-16.3 34-154 19.9 - 587 10.4-399 <5.78 - 69.4 98.3-2170 Supply air duets Occupied area 15.9-68 65 - 203 403-2122 339 - 554 60-122 1892 - 2568 25 Return air plenum <0.389- 12.9 129-1390 55 - 2720 29 - 2070 40 - 504 595 • 16700 > Supply air ducts s Occupied area 1 24 Return air plenum 3.08 - 9.77 58.1 -166 164 - 2040 128-345 <19.1-43 1330-3250 ! Supply air ducts XI Occupied 14.9-17.8 35-71 1976-2187 o 82-89 383 - 439 311 - 342 a *-o 23 Return air plenum 4.92 - 73 84 - 227 97 - 986 107 - 3620 35-98 980 - 39000 Supply air ducts Occupied area 22 Return air plenum <0.579 - 6.01 33 - 241 59.2 - 593 <15-338 19.4-50.8 626 - 4080 Supply air ducts Occupied area 5.6 -16.7 65.7-157 162 -1090 111-894 16-52.7 1250 - 5240 21 Return air plenum Supply air ducts Occupied area 20 Return air plenum o Supply air ducts H H K Occupied area 5.41 - 5.91 71.0-78.8 120-125 50-55 10-11 869-941 I 19 Return air plenum to Supply air ducts g Occupied area o 18 Return air plenum o iS I Supply air ducts o

o cn

NYC-WTC_000182143