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Wipe sample metal analysis report, PS 234M, Jan 2002
Machine-extracted title · confidence 95%Laboratory report detailing wipe sample results for metals collected at P.S. 234M playground to evaluate potential contamination.
NYC-WTC_000176008–000176010Page image
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NYC 9/11 Public Portal Document
Mr. Bernard P. Orlan January 24, 2002 Wipe Samples for Metals Page 2 P. S. 234(’Manhattan') ATC Project No. 15-19125-0279
There are no established regulatory values for these metals on surfaces. The New York State Department of Environmental Conservation (NYSDEC) has clean-up objectives for metals in soil but not for surfaces. There are no Occupational Safety and Health Administration (OSHA) standards that are applicable to this circumstance.
Wipe Sample Results
Eight metals were detected in all three samples. Cd, Co and Mo were not detected. Al, Cu, Mg and Zn were also found in the blank. Metal concentrations are shown in the following chart.
METAL CONCENTRATIONS (micrograms/sample)
METAL RANGE
ALUMINUM* 114-145
CHROMIUM 0.774- 1.23
COPPER* 7.23-13.6
IRON 326-491
MAGNESIUM* 337-457
MANGANESE 6.45 - 8.34
NICKEL 0.564-1.00
ZINC* 23.7-31.0
* Metal also detected in blank
Findings
Detectable levels of eight of eleven metals were found in the samples from three playground surfaces. ATC does not believe that the levels detected constitute a hazardous condition.
CONFIDENTIAL, CITY_21MC100_003423138 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176009
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NYC-WTC_000176009Source: NYC Law Department, mirrored locally
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