Underground Piping Associated with Aboveground Oil Storage Tanks

Introduction
Contacts
Laws, Rules, Policies and Guidelines
Underground Piping Forms, Lists, Fact Sheets Resources and Publications
Related Programs

Introduction
Underground Piping

Since June, 24 1991, new installations of underground piping associated with aboveground oil storage tanks (ASTs) must be installed and maintained under the same Rules as piping associated with underground tanks.

After July 1, 1995, it became illegal for an owner to operate aboveground tanks with underground piping not constructed of a non corrosive material approved by the DEP.

Effective August 23, 2006, the Maine Legislature adopted a new law that established new requirements for facilities with aboveground tanks storing motor fuel (gasoline, diesel, biodiesel, aviation gasoline, jet fuel, gasohol or other fuels used in the operation of a vehicle or motor engine) and that are connected to underground piping.

This new law established several important deadlines for owners of aboveground motor fuel facilities to be aware of:

By January 1, 2007, register motor fuel ASTs (For diesel ASTs see deadline #3.) with underground piping;

By July 1, 2007, and annually thereafter, submit inspection reports from a Certified Tank Installer or Certified Tank Inspector of underground piping systems associated with motor fuel ASTs (for diesel ASTs see deadline #4);

By January 1, 2009, register diesel ASTs with underground piping;

By July 1, 2009, and annually thereafter, submit inspection reports from a Certified Tank Installer or Certified Tank Inspector of underground piping systems associated with diesel ASTs; and

By January 1, 2011, retrofit pre-June 24, 1991, underground piping systems at all motor fuel ASTs to meet the DEP’s leak detection standards

Contacts - Who to contact for more information on Underground Piping associated with aboveground motor fuel storage tanks, please call (207) 287-7688.

Laws, Rules, Policies and Guidelines - Regarding Underground Piping at AST facilities

Chapter 692 - Siting of Oil Storage Facilities - (Effective April 24, 2010)

38 MRSA § 563 (10): Aboveground Oil Storage Tanks With Underground Piping

38 MRSA §§ (1391- 1399): Aboveground Oil Storage Facilities Siting Restrictions

Chapter 691- Rules for Underground Oil Storage Facilities

March 2011 - Removal of Flexible Underground Product Piping Policy (pdf format)

Underground Piping Forms, Lists, Fact Sheets and Publications

Forms

Underground Piping Associated with AST Motor Fuel Tanks Annual Inspection Form (MS Excel format) (pdf format)

Underground Piping Associated with AST Motor Fuel Tanks Inspector's Handbook (pdf format)

Underground Piping Registration Form (MS Word format) (pdf format)

Lists

Maine Certified Underground Storage Tank Installers and Inspectors

Site Assessors List (pdf format)

Fact Sheets

Ethanol in Gasoline

Related Programs

Board of Underground Tank Installers

Finance Authority of Maine (FAME) Compliance Assistance Loan Program (Off Site)

Underground Oil Storage Tanks

SPCC Program