Discovery / map of subjects
Topic map
Page and document embeddings group records by subject. Region area represents pages; boxes and dates trace how a topic spreads across the collection. This is a map of subjects, never of people.
Machine-clustered topics and assignments, not a definitive index. Select a topic to zoom into its sub-topics, then a sub-topic to see its documents.
← Whole collection · World Trade Center environmental referrals and indoor air quality inspections
14440 pages · 4196 documents — open this topic's documents →
HVAC and indoor air quality inspections and permits5227 pages · 1235 documentsEnvironmental inspections, permits, and correspondence for heating, ventilation, and air conditioning systems at World Trade Center sites post-9/11. · Boxes 7DCAS, DEP Box 09, DEP Box 39, GRM 011339086 - BOX 13 · Click to open documentsWorld Trade Center and lower Manhattan structural crack assessment and remediation records5135 pages · 605 documentsPost-9/11 environmental testing, inspections, and permits documenting crack surveys and structural evaluations at WTC sites and nearby infrastructure. · Boxes 7DCAS, DEP Box 07, DEP Box 02, DEP Box 44 · Click to open documentsEnvironmental site assessments and permits for lower Manhattan buildings1640 pages · 769 documentsEnvironmental testing, inspections, and permitting records for properties near the World Trade Center site, 1997 onward. · Boxes DEP Box 07, DEP Box 02, DEP Box 47, DEP Box 39 · Click to open documentsPCM and asbestos inspection records for lower Manhattan buildings1021 pages · 249 documentsPost-9/11 environmental testing, permits, and contractor invoices for asbestos and building system inspections across multiple lower Manhattan sites. · Boxes DEP Box 47, DEP Box 39, DEP Box 52, DEP Box 49 · Click to open documentsWater and air quality testing records for lower Manhattan buildings755 pages · 747 documentsPost-9/11 environmental monitoring, permits, and inspections for structures near the World Trade Center site. · Boxes DEP Box 45, DEP Box 46, DEP Box 37, DEP Box 39 · Click to open documentsLower Manhattan building permits and environmental inspections post-9/11520 pages · 499 documentsNYC permits, inspections, and environmental testing records for lower Manhattan buildings following the September 2001 attacks. · Boxes DEP Box 40, DEP Box 49, DEP Box 52, DEP Box 34 · Click to open documentsWTC environmental testing and roof cleaning permits, 2001–2002142 pages · 92 documentsEnvironmental monitoring, building facade cleaning permits, and related correspondence following World Trade Center collapse. · Boxes DEP Box 03, DEP Box 43, GRM 006368513 - BOX 2, GRM 006367960 - BOX 45 · Click to open documents
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