The order the City kept.

NYC-WTC_000029434

Record of liquid-liquid extraction parameters including drip rates and pH levels for samples processed at the laboratory in November 2001.

NYC-WTC_000029435 – NYC-WTC_000029441

Log sheet containing identification numbers and metadata for environmental samples collected at the World Trade Center site in November 2001.

NYC-WTC_000029442 – NYC-WTC_000029454

Laboratory report detailing GCMS analysis of sample AD25458 conducted on November 13, 2001, with results for various organic compounds.

NYC-WTC_000029455 – NYC-WTC_000029458

Laboratory analysis report listing concentrations of pesticides and organic compounds in sample AD25458 from November 2001.

NYC-WTC_000029459 – NYC-WTC_000029499

Gas chromatography-mass spectrometry analysis results for sample AD25458 including Hexachlorobenzene and other compounds from November 2001.

NYC-WTC_000029500 – NYC-WTC_000029504

Laboratory analysis report verifying method detection limits for pesticides and organic compounds in sample AD25458 during November 2001.

NYC-WTC_000029505 – NYC-WTC_000029509

Laboratory analysis report of reference standards used to validate pesticide and organic compound testing in sample AD25458 during November 2001.

NYC-WTC_000029510 – NYC-WTC_000029514

Laboratory report listing analytical results for pesticides and organic compounds in sample AD25458 collected October 29, 2001.

NYC-WTC_000029515 – NYC-WTC_000029519

Laboratory analysis of environmental sample AD25459 reporting pesticide and industrial compound detections including bis(2-ethylhexyl)phthalate.

NYC-WTC_000029520 – NYC-WTC_000029524

Laboratory report listing analytical results for pesticides and organic compounds in sample AD25460 collected October 29, 2001.

NYC-WTC_000029525 – NYC-WTC_000029538

Laboratory report listing analytical results for pesticides and organic compounds in sample AD25601 collected October 29, 2001.

NYC-WTC_000029539 – NYC-WTC_000029542

Laboratory report of a lab blank analysis for sample AD25601 conducted November 13, 2001 to verify analytical cleanliness.

NYC-WTC_000029543 – NYC-WTC_000029546

Laboratory report of calibration standard analysis for sample AD25601 conducted November 13, 2001 to verify instrument accuracy.

NYC-WTC_000029547 – NYC-WTC_000029551

Laboratory report of method detection limit verification for sample AD25601 conducted November 13, 2001.

NYC-WTC_000029552 – NYC-WTC_000029557

Laboratory report of reference standard analysis for sample AD25601 conducted November 13, 2001 to validate analytical procedures.

NYC-WTC_000029558 – NYC-WTC_000029561

Laboratory report listing analytical results for pesticides and organic compounds in sample AD25601 collected October 29, 2001.

NYC-WTC_000029562 – NYC-WTC_000029570

Laboratory report listing analytical results for pesticides and organic compounds in sample AD25461 collected October 29, 2001.

NYC-WTC_000029571 – NYC-WTC_000029579

Laboratory report listing analytical results for pesticides and organic compounds in sample AD25462 collected October 29, 2001.

NYC-WTC_000029580 – NYC-WTC_000029588

Laboratory report listing analytical results for pesticides and organic compounds in sample AD25463 collected October 29, 2001.

NYC-WTC_000029589 – NYC-WTC_000029593

Laboratory report listing analytical results for pesticides and organic compounds in sample AD25463 collected October 29, 2001.

NYC-WTC_000029594 – NYC-WTC_000029607

Laboratory report listing analytical results for pesticides and organic compounds in sample AD25496 collected October 29, 2001.

NYC-WTC_000029608 – NYC-WTC_000029612

Laboratory report listing analytical results for pesticides and organic compounds in sample AD25599 collected October 29, 2001.

NYC-WTC_000029613 – NYC-WTC_000029617

Laboratory report listing analytical results for pesticides and organic compounds in sample AD25600 collected October 29, 2001.