NYC-WTC_000232716

NYC 9/11 Public Portal Document

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R02100403 R02100403 R02100403 R02100403 R02100403 02A 02A Client ID: OSA 03A 03A 039107 02 039107 02 Lab No.: 039108 02 039108 02 039108 02 02/10/09 02/10/09 Date Sampled: 02/10/09 02/10/09 02/10/09 Matrix:

Component TEF It of Isomers RDL Units TEF # of Isomers RDL

Dioxins and furans

2,3,7,8-CI4DBF 0.040 0.38 pg 1.2 0.12 0.56 2,3,7,8-CI4DBD <0.38 0.48 <0.48 <0.48 6.0 1,2,3,7,8-CI5DBF <0.027 0.52 <0.52 <0.026 1.3 2,3,4,7,8-CI5DBF <0.26 0.50 <0.50 <0.25 1.2 1,2,3,7,8-CI5DBD <0.33 0.54 <0.54 <0.27 1.5 1,2,3,4,7,8-CI6DBF <0.039 0.47 <0.47 <0.047 1.1 1,2,3,6,7,8-CI6DBF <0.036 0.44 <0.44 <0.044 0.99 2,3,4,6,7,8-CI6DBF <0.042 0.52 <0.52 <0.052 1.2 1,2,3,7,8,9-CI6DBF <0.046 0.56 <0.56 <0.056 1.3 1,2,3,4,7,8-CI6DBD <0.028 0.77 <0.77 <0.077 2.3 1,2,3,6,7,8-CI6DBD <0.026 0.71 <0.71 <0.071 2.1 1,2,3,7,8,9-CI6DBD <0.026 0.69 <0.69 <0.069 2.1 1,2,3,4,6,7,8-CI7DBF <1.1 36 <36 <0.36 22 1,2,3,4,7,8,9-CI7DBF <1.3 41 <41 <0.41 14 1,2,3,4,6,7,8-CI7DBD <0.0068 0.60 <0.60 <0.0060 2.1 1,2,3,4,6,7,8,9-CI8DBF <0.0013 0.62 <0.62 <0.00062 2.2 1,2,3,4,6,7,8,9-CI8DBD 0.0013 7.6 <7.6 <0.0076 5.7

TEF 0.042 pg 0.12 EPA Requested TEQs < 1.87 < 1.21 MAX TEF < 3.7 2.3 Units Ng/m^ < 0.19 < 0.12

ET4CDF 1 0.38 pg 1.2 1 0.56 ZP5CDF 0 0.52 <0.52 0 1.3 ZH6CDF 0 0.47 <0.47 0 1.2 ZH7CDF 0 38 <38 0 9.5 OCDF 0 0.62 <0.62 0 2.2 ZT4CDD 0 0.48 1.3 1 1.3 ZP5CDD 0 0.54 <0.54 0 1.5 ZH6CDD 0 0.71 <0.71 0 2.1 ZH7CDD 0 0.52 <0.52 0 2.1 OCDD 1 7.6 <7.6 0 5.7 Surrogate Recoveries % 2,3,7,8-T4CDF-13C12 90 2,3,7,8-T4CDD-13C12 86 1,2,3,7,8-P5CDF-13C12 89 1,2,3,7,8-P5CDD-13C12 91 1,2,3,6,7,8-H6CDF-13C12 79 1,2,3,6,7,8-H6CDD-13C12 82 1,2,3,4,6,7,8-H7CDF-13C12 84 1,2,3,4,6,7,8-H7CDD-13C12 91

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CONFIDENTIAL, CITY. 21MC100_013182134 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000232722