NYC-WTC_000196297

NYC 9/11 Public Portal Document

NYC Emergency Response Air Samples * dioxin and furan results Sampling Date 10/08/01

Sample No WG6234-1 00791 00792 00793 00794 00795 00796 Sampling Location Method Blank TAGA TAGA A-Barclay & West Broadway B-Church & Day St Loc 3-SW Side ofWTCS Cl-Liberty St. & Broadway

Volume (Liters) 0 7395 7395 5635 5434 5390 5225

Analyte Result EMPC MDL Result EMPC MDL Result EMPC MDL Result EMPC MDL Result EMPC MDL Result EMPC MDL Result EMPC MDL ng ng ng ng/m^ ng/m^ ng/m^ ng/m^ ng/m^ ng/m^ ng/m^ ng/m'" ng/m^ ng/nr' ng/m^ ng/m^ ng/m^ ng/m^ ng/m^ ng/m^ ng/m^ ng/m^

2378-rCDD U 0.020 U 0.0027 U 0.0027 U 0.0035 U 0.0012 0.0037 U 0.0026 0.0037 U 0.0021 0 0038 1237e-PeCDD U 0-10 u 0.014 U 0.014 0.0005 J 0.018 0.0064 J 0.018 0.0127 J 0.019 0.0133 J 0.019 123478-HxCDD U 0.10 u 0.014 U 0.014 U 0.018 0.0086 J 0.018 0.0183 J 0.019 0.0147 J 0.019 123678-HxCDD U 0.0085 0.10 u 0.014 U 0.0009 0.014 U 0.0015 0.018 0.0132 J 0.018 0.0246 0.019 0.0244 0.019 123789-HxCDD U 0.10 u 0.014 U 0.014 0.0009 J 0.018 0.0093 J 0.018 0.0184 J 0.019 0.0164J 0.019 1234678-HpCDD U 0.0047 0.10 u 0.014 u 0.014 U 0.018 0.0564 J 0.018 0.117 0.019 0.111 0.019 OCDD 0.0181 J 0.20 u 0.027 u 0.027 U 0.035 0.0664 J 0.037 0.135 0.037 0.128 0.038

2378-TCDF U 0.020 U 0.0027 u 0.0027 U 0.0006 0.0035 0.0046 00037 0.0087 0.0037 0.0117 0.0038 12378-PeCDF U 0.0028 0.10 u 0.014 u 0.014 U 0.0010 0.018 U 0-0076 0.018 U 0.0139 0.019 0.0175 J 0.019 23478-PeCDF U 0.10 u 0.014 u 0.014 0.0011 J 0.018 0.0110 J 0.018 0.0223 0.019 0.0247 0.019 123478-HxCDF U 0.10 u 0.014 u 0.014 0.0012 J 0.018 0.0114 J 0.018 U 0.0215 0.019 0.0270 0.019 123678-HxCDF U 0.0030 0.10 u 0.014 u 0.014 U 0.0013 0.018 U 0.0095 0.018 u 0.0183 0.019 U 0.0204 0.019 234678-HxCDF U 0.10 u 0.014 u 0.014 0.0012 J 0.018 0.0113 J 0.018 0,0221 0.019 U 0.0237 0.019 123789-HxCDF U 0.10 u 0.014 u 0.014 U 0.018 U 0.0029 0.018 U 0.0057 0.019 U 0.0067 0.019 1234678-HpCDF U 0.0034 0.10 u 0.014 u 0.014 0.0041 J 0.018 0.0266 0.018 0.0528 0.019 0.0583 0.019 1234789-HpCDF U 0.10 u 0.014 u 0.014 U 0.018 0.0022 J 0.018 0.0047 J 0.019 0.0053 J 0.019 OCDF U 0.0058 0.20 u 0.027 u 0.027 U 0.035 0.0087 J 0.037 0.0148 0.037 0,0180 J 0.038

Total TCDDs U U u 0.0352 0.801 1.68 1.53 Total PeCDDs U U u 0.0166 0.643 1.32 1.26 Total HxCDDs U U u 0.0164 0.694 1.43 1.33 Total HpCDDs U U u 0.0070 0.134 0.280 0.264

Total TCDFs U U u 0.0032 0.286 0.567 0.702 Total PeCDFs U U u 0.0102 0-121 0.235 0.273 Total HxCDFs U U u 0.0091 0.0768 0.154 0.144 Total HpCDFs U U u 0.0041 0.0364 0.0720 0.0806

Total Adjusted Cone TEQ (ND=0) 0.0000 0.0000 00000 0.0013 0.0155 0.0287 0.0312 TEQ (ND=1/2) 0 0039 0.0006 00004 0.0028 0.0177 0.0320 0.034

COC# 04084

Q EMPC; Estimated Maximum Possible Concentration TEQ; Toxicity Equivalent

K The TEQ (ND=1/2) is calculated using 1/2 of the estimated detection limit forU (non detect) values I to

O o o I o o co o co co co 10-08-01dioair ERTC: 10/21/01 09:50 AM

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NYC-WTC_000196297