---
title: "Michael R. Petrin, Title 5 System Inspector SI #4804 | Title 5 Roster"
description: "Michael R. Petrin is a MassDEP-approved Title 5 System Inspector (SI #4804) based in Springfield, MA. Approval expires June 30, 2028 per the NEIWPCC list."
canonical: https://title5roster.com/inspectors/michael-r-petrin-si4804/
---

# Michael R. Petrin, Title 5 System Inspector (SI #4804)

Michael R. Petrin is on the NEIWPCC list of MassDEP-approved Title 5 System Inspectors dated October 2, 2026.

* **SI number:** #4804
* **Approval expires:** June 30, 2028
* **Approved by:** Massachusetts Department of Environmental Protection (MassDEP); list published by NEIWPCC
* **Business listing:** VHB
* **Based in:** Springfield, MA
* **County:** Hampden County

Source: https://neiwpcc.org/wp-content/uploads/2026/10/SI-Instate-10.2.2026.pdf (retrieved 2026-10-12)