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Air monitoring report cover sheet, 345 South End Ave, 2001

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Cover page for an air monitoring and bulk sampling report for Building #200 at 375 South End Avenue.

NYC-WTC_000095478–000095630

Folder label: “345 SOUTH END AVENUE Block: 16 Lot: 100

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NYC 9/11 Public Portal Document

5. Findings and Conclusions Twenty-one Twenty-one (21) initial background air samples were collected and analyzed at building 200. microscopy (PCM) and twelve (12) were re-analyzed via (21) were analyzed via phase contrast transmission electron microscopy (TEM). All were below the permissible limits.

them via Based on EPA Guidelines, we collected one hundred ninety-nine (199) bulk samples and analyzed Sixteen (16) samples collected from six (6) apartments Polarized Light Microscopy (PLM) Methodology. samples that were were found to be slightly above the regulatory limits of 1%. Of the sixteen (16) bulk were found to be above the regulatory limits upon further analysis at a found to be above the limits, zero (0) second laboratory for quality control purposes.

Methodology. The One hundred eighty-two (182) air samples were collected and analyzed via TEM below <70 structures Per mm2 results indicated that the living areas achieved the acceptance criteria set by the above regulations.

6. Limitations and Exclusions work conducted and All the professional opinions presented in this report are based solely on the scope of in our report. The data presented by ALC in this report was collected and analyzed sources referred to generated. This report using generally accepted industry methods and practices at the time the report was represents the conditions, locations, and materials that were observed at the time the fieldwork was conducted. No inferences regarding other conditions, locations, or materials, at a later or earlier time may other warranty, express or limited is made. ALC's liability be made based on the contents of the report. No subcontractors, arising from any services rendered hereunder, shall not and that of its contractors and of exceed the total fee paid by the client to ALC for this project. This report was prepared for the sole use use of this report by anyone other than our client or ALC is strictly prohibited without the our client. The report. expressed written consent of ALC. Portions of this report may not be used independent of the entire

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NYC-WTC_000095484Source: NYC Law Department, mirrored locally

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NYC-WTC_000121364 · Box DEP Box 48

Chain of custody for air samples collected at 345 South End Avenue buildings in late January and early February 2002.

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