The order the City kept.

NYC-WTC_000031347

Single-page GCMS document identifier from the Environmental Protection Department archive covering late 2001 testing records.

NYC-WTC_000031348 – NYC-WTC_000031349

Document header for GCMS analysis records from the NYC WTC environmental monitoring program.

NYC-WTC_000031350 – NYC-WTC_000031358

Calibration data table for gas chromatography-mass spectrometry analysis dated December 3, 2001.

NYC-WTC_000031359 – NYC-WTC_000031371

Laboratory comment confirming no non-target compounds were detected in sample AD26203 on December 10, 2001.

NYC-WTC_000031372 – NYC-WTC_000031383

Analysis report for sample AD26335 indicating the presence of other unknown compounds on December 4, 2001.

NYC-WTC_000031384 – NYC-WTC_000031399

Report documenting GCMS analysis of sample AD26336 with a note regarding unknown compounds.

NYC-WTC_000031400 – NYC-WTC_000031414

Report documenting GCMS analysis of sample AD26337 detecting unknown compounds and DDD.

NYC-WTC_000031415 – NYC-WTC_000031432

Report documenting GCMS analysis of sample AD26386 with a note regarding unknown compounds.

NYC-WTC_000031433 – NYC-WTC_000031451

Report documenting GCMS analysis of sample AD26387 with a note regarding unknown compounds.

NYC-WTC_000031452 – NYC-WTC_000031472

Report documenting GCMS analysis of sample AD26388 with a note regarding unknown compounds.

NYC-WTC_000031473 – NYC-WTC_000031490

Report documenting GCMS analysis of sample AD26389 with a note regarding unknown compounds.

NYC-WTC_000031491 – NYC-WTC_000031508

Laboratory comment confirming detection of Butylbenzylphthalate in sample AD26390 on December 10, 2001.

NYC-WTC_000031509 – NYC-WTC_000031529

Analysis report for sample AD26391 indicating the presence of other unknown compounds on December 4, 2001.

NYC-WTC_000031530 – NYC-WTC_000031549

DEP lab report dated December 4, 2001, documenting GCMS analysis of sample AD26392 noting other unknown compounds.

NYC-WTC_000031550 – NYC-WTC_000031566

DEP lab report dated December 4, 2001, documenting GCMS analysis of sample AD26393 noting other unknown compounds.

NYC-WTC_000031567 – NYC-WTC_000031578

DEP lab report dated December 4, 2001, documenting GCMS analysis of sample AD26394 noting other unknown compounds.

NYC-WTC_000031579 – NYC-WTC_000031591

DEP lab report dated December 4, 2001, documenting GCMS analysis of sample AD26433 noting other unknown compounds.

NYC-WTC_000031592 – NYC-WTC_000031601

DEP lab report dated December 4, 2001, documenting GCMS analysis of sample AD26434 noting other unknown compounds.

NYC-WTC_000031602 – NYC-WTC_000031610

DEP lab report dated December 4, 2001, documenting GCMS analysis of sample AD26471 noting other unknown compounds.

NYC-WTC_000031611 – NYC-WTC_000031623

DEP lab report dated December 4, 2001, documenting GCMS analysis of sample AD26472 noting other unknown compounds.

NYC-WTC_000031624 – NYC-WTC_000031635

Gas chromatography-mass spectrometry analysis of sample AD26472 identifying unknown compounds, analysis conducted December 4, 2001.

NYC-WTC_000031636 – NYC-WTC_000031649

DEP lab report dated December 10, 2001, identifying N,N-dimethylbenzenesulfonamide at 0.49 ug/L in sample AD26473.

NYC-WTC_000031650 – NYC-WTC_000031660

DEP lab report dated December 4, 2001, documenting GCMS analysis of sample AD26474 noting other unknown compounds.