WTC sample cover sheet, Dec 27 2001

NYC 9/11 Public Portal Document W UM11L1LCLL.LLfl1 it.CjU.LU k"UL 1'CCVICWCUj

Data File : C:\HPCHEM\1\DATA\01dec27\1227C10B.D Vial: 8 Acq On : 28 Dec 2001 2:38 am Operator: 206-BH Sample : cal 10 Inst : GC/MS Ins Misc Multiplr: 1.00 MS Integration Params: LSCINT.P Quant Time: Dec 28 3:18 2001 Quant Results File: HP121001.RES

Quant Method : C:\HPCHEM\1\METHODS\HP121001.M (RTE Integrator) Title : VOCs BY EPA METHOD 524 Last Update : Thu Dec 20 09:38:26 2001 Response via : Initial Calibration DataAcq Meth : HP121001

Internal Standards R.T. Qlon Response Conc Units Dev(Min)

1) 1,4-DIFLUOROBENZENE 14.47 114 688662 5.00 ug/L 0.12 22) CHLOROBENZENE-D5 21.05 117 687103 5.00 ug/L 0.09 50) 1,4-DICHUOROBENZENE-D4 26.21 152 550811 5.00 ug/L 0.10

System Monitoring Compounds 2) 1,2-DICHLOROETHANE-D4 13.67 65 265369 5.85 ug/L 0.09 Spiked Amount 5.000 Recovery = 117.000 3) 4-BROMOFLUOROBENZENE 23.64 174 319731 6.05 ug/L 0.10 Spiked Amount 5.000 Recovery = 121.00% 23) TOLUENE-D8 17.78 98 897415 4.93 ug/L 0.10 Spiked Amount 5.000 Recovery = 98.600

Target Compounds Qvalue 4) DICHLORODIFLUOROMETHANE 4.50 85 207952 9.25 ug/L 100 5) CHLOROMETHANE 5.02 50 210633 15.07 ug/L 98 6) VINYL CHLORIDE 5.19 62 266113 19.15 ug/L 94 7) BROMOMETHANE 6.10 94 170356 14.02 ug/L 99 8) CHLOROETHANE 6.23 64 140580 14.75 ug/L 100 9) TRICHLOROFLUOROMETHANE 6.77 101 349814 11.60 ug/L 99 10) ACETONE 7.71 43 47071 10.19 ug/L 90 11) 1,1-DICHLOROETHENE 8.04 61 430245 10.99 ug/L 94 12) METHYLENE CHLORIDE 9.02 49 456656 12.04 ug/L 94 13) METHYL TERT BUTYL ETHER 9.31 73 429420 8.58 ug/L 100 14) TRANS-1,2-DICHLOROETHENE 9.67 61 441760 10.41 ug/L 93 15) 1,1-DICHLOROETHANE 10.55 63 583239 11.02 ug/L 97 16) 2-BUTANONE (MEK) 11.37 43 71157 8.72 ug/L 98 17) 2,2-DICHLOROPROPANE 11.75 77 365715 8.38 ug/L 98 18) CIS-1,2-DICHLOROETHENE 11.85 96 301918 10.18 ug/L 89 19) CHLOROFORM 12.17 83 601136 11.90 ug/L 99 20) BROMOCHLOROMETHANE 12.55 49 273363 11.40 ug/L 91 21) 1,2-DICHLOROETHANE 13.88 62 359619 10.58 ug/L 98 24) 1,1,1-TRICHLOROETHANE 13.06 97 472153 11.19 ug/L 98 25) 1,1-DICHLOROPROPENE 13.40 75 430087 10.33 ug/L 98 26) CARBON TETRACHLORIDE 13.64 117 420966 11.73 ug/L 99 27) BENZENE 14.00 78 1229700 10.16 ug/L 99 28) TRICHLOROETHENE 15.24 95 322592 9.95 ug/L 97 29) 1,2-DICHLOROPROPANE 15.60 63 337685 10.01 ug/L 98 30) DIBROMOMETHANE 16.25 174 114961 9.58 ug/L 98 31) BROMODICHLOROMETHANE 16.09 83 446327 11.49 ug/L 99 32) 2-CHLOROETHYL VINYL ETHER 16.60 63 95325 7.61 ug/L 91 33) Methyl iso-butyl ketone 16.67 58 49198 7.64 ug/L 92 ------------------------------------------------------------------------- (#) = qualifier out of range (m) = manual integration 1227C10B.D HP121001.M Fri Dec 28 03:19:04 2001 Page 1

NYC-WTC 000002718