Request for review of monitoring contractor specifications for air sampling, including sampling methodologies, limits of detection, and clearance criteria, with reference to prior…
NYC-WTC_000162815–000162821Folder label: “E-mails 2003 M. Gilsenan”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Diun» New York City Department of Environmental Protection Bureau of Environmental Compliance
Monitoring Contractor Scope of Work for 114 Liberty Street, Manhattan
Background
A follow-up visit to 114 Liberty Street revealed minor dust accumulations present on surfaces within the interior of the building. The interior cleaning is to be accomplished by a licensed asbestos abatement contractor and monitored by a Monitoring Contractor.
Purpose
The Monitoring Contractor shall provide personnel experienced, trained, and certified in environmental sampling and asbestos air monitoring to be on-site, full-time, during work area preparation and cleaning phases of building interiors (12 stories -5,000 to 6,000 square feet per floor). Each apartment occupies an entire floor with the exception of the top floor that is a duplex and the apartment on the third floor that shares the floor with two commercial spaces. The entire interior of the building (residential, commercial, retail spaces, common spaces, etc.) is included in this work. Each floor has central HVAC systems.
The Monitoring Contractor shall provide qualified staff to observe the work, conduct air monitoring and sampling, and monitor the cleanup of the building interiors to ensure compliance with the project specifications and appropriate regulatory requirements. The Monitoring Contractor shall provide clearance sampling and analyses.
The Monitoring Contractor shall provide qualified staff to collect samples for asbestos, lead, polyaromatic hydrocarbons (PAHs), dioxin, fibrous glass, and crystalline silica.
An accredited laboratory shall perform all sample analyses.
The Work shall be performed 24 hours per day, seven (7) days per week. Pre-clean up sampling must begin within 24 hours of receipt of the Commence IVork letter. All pre-clean up samples must be completed and submitted to the laboratory for analysis within 48 hours.
Air Monitoring/Construction Inspection Services
Air monitoring by a Monitoring Contractor shall be conducted during all cleanup activities. The Monitoring Contractor shall provide individuals certified as project monitors and air sampling technicians to perform daily air sampling and inspections from the commencement of the project through final clearance sampling. The Monitoring Contractor shall provide sufficient equipment and experienced personnel to monitor work area preparation and cleaning phases of the building interiors.
Qualifications
Project Monitoring The Project Monitors must posses valid NYS Asbestos Project Monitor certificates. Monitors must have served as a third party project monitor on at least 25 asbestos abatement projects. The Project lof6
NYC-WTC_000162816
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NYC-WTC_000162838
Correspondence regarding Schedule A forms and a draft scope of work for cleaning and air monitoring contracts at the site.
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DEP forwards inspection report for 125 Cedar Street along with NYC guidelines on fungal remediation.
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Document tracking the chain of custody for environmental samples collected at 114 Liberty Street on August 22, 2002.
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Technical correspondence addressing asbestos air sampling methodology and pump flow rate specifications.
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NYC-WTC_000162712
Official notice instructing staff to preserve scanned World Trade Center documents as potential evidence in future legal actions.
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NYC-WTC_000162713
Official notice instructing staff not to dispose of original World Trade Center documents as they are required for legal proceedings.
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NYC-WTC_000162729
DEP submits OSHA compliance justification document for review regarding worker safety in WTC cleanup procedures.
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NYC-WTC_000162731
EPA submits detailed technical questions and comments on proposed HVAC cleaning procedures for WTC buildings.
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