The order the City kept.

NYC-WTC_000059471

Administrative record from the Department of Environmental Protection regarding World Trade Center activities in early 2002.

NYC-WTC_000059472

Single-page document from DEP Box 57 containing minimal visible text, likely part of a larger environmental record series.

NYC-WTC_000059473 – NYC-WTC_000059477

Data sheet recording water quality parameters including drip rate, pH, and counts for samples analyzed in early 2002.

NYC-WTC_000059478 – NYC-WTC_000059486

Instrument calibration record using DFTPP standard to verify GCMS performance for analytical testing on April 1, 2002.

NYC-WTC_000059487 – NYC-WTC_000059490

Laboratory report of a GCMS blank test conducted on April 5, 2002, showing non-detect levels for various organic compounds.

NYC-WTC_000059491 – NYC-WTC_000059498

Calibration data sheet listing retention times and response factors for multiple organic compounds analyzed on April 5, 2002.

NYC-WTC_000059499 – NYC-WTC_000059507

Reference analysis report for sample AE05701 conducted on April 5, 2002, quantifying recovery of specific organic compounds.

NYC-WTC_000059508 – NYC-WTC_000059516

Laboratory report documenting GCMS analysis of sample AE05701 conducted on April 11, 2002, including surrogate recovery data.

NYC-WTC_000059517 – NYC-WTC_000059525

Laboratory report documenting GCMS analysis of sample AE05702 conducted on April 11, 2002, including surrogate recovery data.

NYC-WTC_000059526 – NYC-WTC_000059535

Laboratory report documenting GCMS analysis of sample AE05703 conducted on April 11, 2002, including surrogate recovery data.

NYC-WTC_000059536 – NYC-WTC_000059544

Laboratory report documenting GCMS analysis of sample AE05743 conducted on April 11, 2002, including surrogate recovery data.

NYC-WTC_000059545 – NYC-WTC_000059554

Gas chromatography/mass spectrometry analysis of sample AE05745 performed April 11, 2002, with surrogate recovery data for 2,4-DDD.

NYC-WTC_000059555 – NYC-WTC_000059564

Laboratory report documenting GCMS analysis of sample AE05745 conducted on April 11, 2002, including surrogate recovery data.

NYC-WTC_000059565 – NYC-WTC_000059575

Laboratory report documenting GCMS analysis of sample AE05746 conducted on April 11, 2002, including surrogate recovery data.

NYC-WTC_000059576 – NYC-WTC_000059584

Laboratory report documenting GCMS analysis of sample AE05747 conducted on April 11, 2002, including surrogate recovery data.