Site identification record, 74-90 Church Street, Oct 2001

NYC 9/11 Public Portal Document

Mr. Shaun Hession . 1— New York City Housing Authority November 12, 2001 ENTEQUE Page 3

Metals Analysis for A mixture of bulk and wipe samples were obtained for analysis for metals. independent metals was conducted by Philip Service Corporation (PSC). PSC is an Environmental AIHA and ELAP accredited laboratory. Analysis was conducted for the Protection Agency (EPA) priority pollutant metals (though mercury was only conducted in bulk samples). where Four samples were obtained from each floor with the exception of the 8' floor upon EMTEQUE obtained five samples. This yielded a total of 33 samples. Basedsouthwest EMTEQUE's initial assumption that contamination would be localized to the (southwest quadrant, sampling was broken down with four samples from the dirtiest area and the corner — one sample), cleanest area (usually the northwest — one sample), tapering off areas (two samples). within all 33 A review of the metals analysis revealed elevated presence of metals within a single order of samples of the dust and debris. Metals levels fl uctuated copper magnitude within the debris samples. Levels of beryllium, cadmium, chromium, New York State Department and zinc within the bulk samples were generally above the Guidance of Environmental Conservation (NYSDEC) Technical and Administrative Memorandum (TAGM) Soil Cleanup Levels. All bulk samples analyzed for mercury were L above the TAGM standards. While the TAGM levels do not apply except in contamination, these standards provide a risk-based standard for contamination soil in bulk material, allowing a means of comparison. dust revealed Wipe samples from within those areas lightly covered (or not covered) with debris. Twenty- the presence of metals, though in generally lower levels than in the bulk than the revealed levels of lead greater five percent (25%) of the wipe samples taken Housing and standard established for the lead clearance criteria by the Department of that metals were consistently present Urban Development (HUD). It should be noted relatively consistent throughout the dust samples taken. Levels of metals appeared to be with the level of dust present.

Polychlorinated Biphenyls polychlorinated A mixture of bulk and wipe samples were obtained for analysis for biphenyls (PCBs). Analysis for PCBs was conducted by PSC. 6th oors from One sample was obtained from each floor with the exception of the 5th and fl the 8th floor from which two samples were which EMTEQUE obtained three samples and areas that had fire taken. The additional samples were taken from each of the floors and sampling was based damage. A total of 13 samples were taken for PCBs. This limited not be present within the upon EMTEQUE's initial assumption that PCBs would inspected spaces.

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NYC-WTC 000124616