EPCRA Tier II Chemical Reporting for Construction: Complete Guide

# EPCRA Tier II Chemical Reporting: Don't Let Thresholds Sneak Up on You

The Emergency Planning and Community Right-to-Know Act (EPCRA) requires facilities that store hazardous chemicals above certain thresholds to file Tier II reports annually with the local fire department, State Emergency Response Commission (SERC), and Local Emergency Planning Committee (LEPC).

Construction companies often overlook Tier II because they think of themselves as "temporary" operations. But a large jobsite with fuel storage, solvents, adhesives, and concrete chemicals can easily exceed reporting thresholds—especially when quantities across multiple containers are aggregated.

Do Construction Sites Need to File Tier II?

Yes, if:

You store 10,000 pounds or more of any hazardous chemical (general threshold)

You store 500 pounds or more (or the Threshold Planning Quantity, whichever is lower) of an Extremely Hazardous Substance (EHS)

The chemical has an SDS (which means it's covered under HazCom and EPCRA)

Common Construction Chemicals That Trigger Reporting

| Chemical | Common Form | Threshold |

|----------|------------|-----------|

| Diesel fuel | Fuel tanks for equipment | 10,000 lbs (~1,400 gallons) |

| Gasoline | Generator and vehicle fuel | 10,000 lbs (~1,600 gallons) |

| Portland cement | Bags and bulk | 10,000 lbs (50 bags of 94 lbs) |

| Acetylene | Welding gas cylinders | 10,000 lbs |

| Muriatic acid | Concrete cleaning | 500 lbs (EHS) |

| Epoxy resins | Coatings and adhesives | 10,000 lbs |

| Propane | Temporary heating | 10,000 lbs |

A single 500-gallon diesel tank (about 3,500 lbs) doesn't trigger reporting alone—but aggregate all diesel across the jobsite and you may exceed the threshold.

The Manual Tracking Problem

Most construction companies track chemical inventory in spreadsheets—if they track it at all. The problems:

Unit conversion errors — chemicals are purchased in gallons, liters, and drums but Tier II repo