NYC-WTC_000202123

NYC 9/11 Public Portal Document

Pace Analytical Services, Inc. 1700 Elm Street, Suite 200 yceAnalyticar vvww.pacelabs.com Minneapolis, MN 55414 Phons: 612.607.1700 Fax: 612.607.6444 TABLE 1. Spike Levels of PCDD/PCDF Standards

Internal Standards Spike Level (ng)

2,3,7,8-TCDF-’^Ci2 2.0

2,3,7,8-TCDD-^3Ci2 2.0

1,2,3,7,8-PeCDF-’®Ci2 2.0

2,3,4,7,8-PeCDF- ’3C,2 2.0

1,2,3,7,8-PeCDD-’3Ci2 2.0

1,2,3,4,7,8-HxCDF-/3C,2 2.0

1,2,3,6,7,8-HxCDF-^2Ci2 2.0

1,2,3,7,8,9-HxCDF-’3Ci2 2.0

2,3,4,6,7,8-HxCDF-’2Ci2 2.0

1,2,3,4,7,8-HxCpD- ’3c,2 2.0

1,2,3,6,7,8-HxCDD-”C,2 2.0

1,2,3,4,6,7,8-HpCDF-’®C,2 2.0

1,2,3,4,7,8,9-HpeDF-’’C,2 2.0

1,2,3,4,6,7,8-HpCDD-\3c,2 2.0

OCDD-^^Ci2 4.0

Recovery Standards

1,2,3,4-TCDD-^3Ci2 2.0

1,2,3,7,8,9-HxCDD-’3Ci2 2.0

Enrichment Efficiency Standard

2.3,7,8-TCDD-”Cl4 0.2

REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc.

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CITY_21MC100_005390302

NYC-WTC_000202133