66 JOHN 59 MAIDEN LANE

NYC 9/11 Public Portal Document

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.•'1/ DRAFT MEMORANDUM Department of Environmental Protection TO: Gerould J. McCoy 59-17 Junction Boulevard Agency Compliance Officer / Flushing, New York Office of Environmental Health and Safety Compliance 11373-5108

FROM: Robert C. Avaltroni fV*’ Deputy Commissioner ' Christopher O. Ward Bureau of Environmental Compliance Commissioner DATE: June 16,2003

SUBJECT: 66 John Street

Please find the additional information related to 66 John Street.

Carpeting was cleaned with water extraction methods. Water extraction methods include the use of industrial-quality HEPA-filtered vacuums with - .power extraction. Water is sprayed on the carpet surface. The carpet fibers are agitated and the water is extracted from the carpeting.

The USEPA tested various cleaning methods after the WTC and found that the use of standard cleaning methods of vacuuming and wet wiping significantly reduced levels of WTC-related contamination with each cleaning event and was successful in reducing concentrations. Robert C. Avaltroni Deputy Commissioner Information provided to the DEP Asbestos Control Program (ACP) Bureau of Enforcement Staff indicated the carpets were cleaned several times Environmental between September 11, 2003 and April 2003 through the use of carpet Compliance shampoos and water extraction. In addition, the staff was informed that the Tel (718)595-4418 building is on a periodic cleaning program cycle. Specific dates are not Fax (718) 595-4422 available in the ACP files, but should be available fi-om the building owner and/or cleaning contractor. The last set of cleaning at DEP’s request began on April 1,2003 and was completed on April 4,2003.

The air sampling was performed on April 5, 2003 rather than on April 4, 2003 as had originally been projected. The sample results are attached for your perusal.

Please feel free to call me if you need additional mformation.

Attachments

( www.nyc.gev/dep

(718) DEP-HELP

NYC-WTC_000156127