Code of Massachusetts Regulations 502 CMR - OFFICE OF THE STATE FIRE MARSHALL
Here's a well‑structured overview of 502 CMR – Office of the State Fire Marshal (Massachusetts):
🧭 Scope & Organization of 502 CMR
The Title 502 regulations implement portions of M.G.L. Chapter 148, § 37, and are compiled by the Trial Court Law Libraries. They currently consist of two active parts:
502 CMR 2.00 – Petitions for adopting, amending, or repealing regulations (mass.gov)
502 CMR 5.00 – Permit and inspection requirements for aboveground storage tanks (ASTs) over 10,000 gallons (mass.gov)
There are no further indexed parts beyond 5.00 as per the library index .
🔍 502 CMR 5.00 – Aboveground Storage Tanks
This section regulates large AST systems:
📌 Section 5.01 – Scope & Purpose
Applies to construction, maintenance, use, and record-keeping for ASTs over 10,000 gallons, aligning with M.G.L. c. 148, § 37 (casetext.com).
📌 Section 5.04 – Permit Requirements
A permit is required prior to constructing, maintaining, or using ASTs with capacity over 10,000 gallons storing any fluid except water. (regulations.justia.com)
Applications must be submitted at least 30 days beforehand, accompanied by engineer-certified plot plans, foundation plans, and geotechnical statements.
Permits expire if construction doesn’t commence within 6 months or complete within 1 year—extensions require written requests. (regulations.justia.com)
📌 Section 5.06 – Immediate Notification
The Fire Marshal must be notified immediately in writing upon discovery of any leak or condition posing a serious threat to safety or the environment. (casetext.com)
📄 Navigating & Accessing the Regulations
Download the full text of 502 CMR 5.00 via the Trial Court Law Libraries or Justia—it remains updated through March 14, 2025 (regulations.justia.com).
502 CMR 2.00 outlines how to petition for changes to these rules.
Printed copies can be ordered through the Massachusetts State Bookstore (typically ~$1.75 for 1.00–5.00) (mass.gov, sec.state.ma.us).
✅ Summary Table
Part
Topic
2.00
Procedure for petitions to adopt/amend regulations
5.00
Permits, inspections, and compliance for ASTs ≥10,000 gal
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