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NYC Law Department letter regarding EPA draft report excerpts, July

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Correspondence from NYC Corporation Counsel providing comments on excerpts of a draft EPA evaluation report regarding the WTC response.

NYC-WTC_000146129–000146748

Folder label: “EPA OIG LAW

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NYC 9/11 Public Portal Document

Final Technical Report of the Public Health Investigation Page2of56 D. Community Exposures E. Human Health Effects of Concern

OBJECTIVES

METHODS A. Sampling Approach B. Samples Taken C. Field and Laboratory Changes From the Original Sampling Protocol 1. Field Changes 2. Sample Analysis Changes D. Data Management and Quality Assurance/Quality Control Procedures E. Data Analysis F. Limitations and Uncertainties

RESULTS A. Survey B. Settled Surface Dust 1. Fiber Analysis of Settled Surface Dust 2. Mineral Analysis of Settled Surface Dust 3. Alkalinity of Settled Surface Dust C. Air 1. Fibers In Air a. Indoor Air b. Outdoor Air 2. Minerals in Air

DISCUSSION

A. Discussion of Results 1. Association of Asbestos and Synthetic Vitreous Fibers 2. Association of Asbestos and Synthetic Vitreous Fiber Levels Outside of and Within a Building 3. Occurrence of Crystalline Minerals 4. Buildings Impacted by Asbestos, Synthetic Vitreous Fibers, and Crystalline Minerals 5. Significance of Minerals and Fibers In the Settled Surface Dust 6. Significance of Minerals and Fibers In Air

B. Public Health Evaluation 1. Sensitive Populations 2. Soluble Minerals: Gypsum, Portlandlte, and Calcite 3. Mica 4. Halite 5. Crystalllne Silica (Quartz and Cristoballte) a. Silicosis b. Lung Cancer 6. Synthetic Vitreous Fibers a. Irritant Effects b. Pulmonary Effects 7. Asbestos a. Asbestosis b. Lung Cancer and Mesothelloma 8. Multiple Material Exposures a. Irritant Effects b. Noncancer Pulmonary Effects

CONCLUSIONS

RECOMMENDATIONS

http://www.atsdr.cdc.gov/asbestos/lowermanhattan/ResSamp_Sep2002_Text.html 07/18/2003 NYC-WTC_000146662

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NYC-WTC_000146662Source: NYC Law Department, mirrored locally

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