Addendum #2 on bulk dust sampling procedures for WTC project,

NYC 9/11 Public Portal Document

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15. The Monitoring ContractoT^han provide sufficient personnel to provide periodic (3- 4hour^®!^W^^JffW^wCleaning Contractor to verify that work is being conducted in accordance with the Cleaning Contract Scope of Work. « *_ _ t _

6. The Project Monitor|hall verify that the Cleaning Contractor is using properly trained and certified NYS J)OL and NYC DEP certified workers.

17. The Project Monitor^hall conduct routine quality assurance inspections during the course of cleaning and concur by initialing the Cleaning Checklist (to be developed) for tasks completed in compliance with the Cleaning Contract Scope of Work.

Deliverables

The Project Monitor shall submit the completed Cleaning Checklist via F2L or an agreed upon alternative electronic format or website approved by EPA within 24 hours of activity. The Project Monitor shall record daily activities in the field notebook.

18. Personal Air Monitoring Personal air monitoring shall be performed by the Monitoring Contractor in accordance with US DOL OSH A requirements. The person who conducts sampling shall possess a valid NYS DOL APST certificate. Personal air monitoring will be performed on a minimum of one worker per shift per residence during for the first 6 weeks of cleaning operations. This may be extended based on a determination made by EPA and OSHA. Thereafter personal air monitoring samples will be taken at one sample per day. All samples shall be collected and analyzed in accordance with the procedures specified in NIOSH 7400 Method followed by AHERA TEM. Analysis of these samples shall be the responsibility of the Monitoring Contractor. Results of analysis shall be provided to EPA by the laboratory in an approved electronic format within 24 hours of collection. Copies of the results shall also be sent immediatelyt^pE^OSHA and the employer. The employer will make these results available to the ^^^ees or their designated representatives for their review in accordance with29CFR 1910.1020 and 29 CFR 1926.1101.

The Monitoring Contractor shall document all the necessary information regarding sampling activities, fill out all field logs, data sheets, and chain-of-custody forms. The Monitoring Contractor shall use F2L for all sample and chain-of-custody documentation. This data shall be provided to EPA within 24 hours of completion of the sampling.

Deliverables

The Project Monitor shall submit upon request a field package consisting of field sheets, field notes (copy), and chain-of-custody forms (copy), which shall be delivered to the EPA via fax, or an alternative format agreed upon. The Monitoring Contractor must sign and date all field sheets, field logbooks and chain-of-custody forms. This data shall be provided daily

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NYC-WTC_000140394