The threshold is identical across all of these. What differs is where the work is.
Chemical manufacturing
VolumeHigh volume, few chemicals
Bulk quantities cross the 10,000 lb threshold easily, so the reportable list is often short but every entry is large. Section 313 reporting usually applies on top of Tier II, which is a separate filing with its own July 1 deadline and its own chemical list.
See manufacturing guide →Oil and gas
Site countTank-based, with its own thresholds
Retail fuel facilities report gasoline and diesel under separate, much higher thresholds than other hazardous chemicals, provided the tanks are in compliance. Inventory is measured in tank capacity rather than container counts, and sites are typically many and geographically spread.
See oil & gas guide →Aerospace and defence
SKU countMany low-volume specialty products
Coatings, solvents, sealants and treatment chemicals arrive as a long tail of small-quantity SKUs, often with high-hazard classifications. Individually most sit below threshold; the work is knowing which ones aggregate past it across a site.
See aerospace guide →Pharmaceuticals
Library churnDense libraries, high turnover
Formulations change, suppliers change, and the SDS library ages faster than in most sectors. The reporting burden is less about any single chemical than about keeping the underlying library current enough that the annual filing reflects reality.
See pharmaceuticals guide →Government and public sector
Low thresholdsSmall quantities, high-consequence chemicals
Water treatment is the common case: chlorine and similar substances are Extremely Hazardous Substances with Threshold Planning Quantities far below the ordinary 10,000 lb limit, so a facility can be reportable at a few hundred pounds. Obligations are usually spread thinly across many small sites.
See government guide →Healthcare
DepartmentsBulk gases beside a long tail of consumables
Medical oxygen and other compressed gases are held in bulk and cross thresholds readily, while disinfectants, fixatives and pharmacy chemicals arrive in small quantities across dozens of departments. Sterilants deserve particular attention: ethylene oxide is an Extremely Hazardous Substance, so its threshold sits far below the ordinary limit.
See healthcare guide →Education and research labs
Distinct chemicalsThousands of chemicals, tiny amounts
A single university can hold more distinct chemicals than a refinery, almost all in gram and millilitre quantities. Few cross a Tier II threshold, but establishing that requires an inventory across every building, and RCRA has a separate rule set for academic laboratories.
See education & labs guide →Data centers
EMBEDDED CHEMICALSChemicals inside equipment, not on shelves
UPS battery banks, generator diesel, chiller refrigerant and suppression cylinders hold Tier II chemicals that a typical EHS inventory doesn't list, because none of it looks like a chemical. Sulfuric acid in a battery bank is also an Extremely Hazardous Substance, so a large installation can trigger a Section 302 notification well before the next annual filing.
See the data centers guide →Every one of these ends at the same place: an accurate inventory, checked against thresholds continuously rather than once a year, with safety data sheets current enough to classify what is on site. That is what the platform does, and why it is built from modules rather than as one fixed workflow, and the demanding part is different depending on which of these you are. Explore our EPCRA reporting software to see how chemical inventory and SDS information support Tier II reporting.
Two things genuinely vary by more than degree.