Technical Assistance Program

“I need advice and technical assistance for a petroleum contaminated site.”

About the Program

The Technical Assistance Program (TAP) assists underground storage tank (UST) owners and operators  with advice and guidance on petroleum cleanups.  PLIA provides assistance to those with eligible gasoline/diesel UST systems or heating oil tank systems.  We review environmental reports submitted to us and provide opinion letters based on that review and the requirements of the state cleanup regulations, chapter 173-340 WAC, the Model Toxics Control Act (MTCA).

For completed cleanups which meet the substantive requirements of MTCA, we issue a No Further Action opinion. A No Further Action may be helpful with property transfers.


PLIA only accepts gasoline/diesel sites that do not impact surface water or sediment and are not co-mingled with other, non-petroleum contaminates.

If your site is not eligible for TAP, it may qualify for services under the Department of Ecology’s Voluntary Cleanup Program.

How to enroll In TAP

Applications are only accepted online. Please complete the application using the button below.

APPLY for Gasoline/Diesel APPLY for Heating Oil


Before submitting the application, you will be prompted to upload reports. For gasoline/diesel sites, you will schedule an intake meeting.

An application is complete once reports are uploaded and an intake meeting has been scheduled (only required for gasoline/diesel sites). Program enrollment follows application review, intake meeting (for gasoline/diesel sites) and payment of fee.

Schedule an Intake Meeting

An intake meeting is required for enrollment of gasoline/diesel sites into TAP. Attending an intake meeting is optional for heating oil sites.

The meeting is an opportunity for applicants to discuss their site with a PLIA site manager before submitting the program fee.  You do not need to pay the enrollment fee to attend the intake meeting.

TAP Enrollment Fee and Payment

The enrollment fee must be paid before your site is accepted into TAP. The cost to enroll is:

  • Gasoline/Diesel: $7,500 per release/tank system
  • Heating Oil: $1,000 per release/tank system

If your site is enrolled in another PLIA program, then you may use the program funds to pay the enrollment fee.

To pay the program fee electronically please use the Make Payment button below.

Response Timelines

We aim to provide timely opinions. Our response goal is:

  • Within 70 days of request for gasoline/diesel sites.
  • Within 90 days of request for heating oil sites.

Statutes and Rules

Chapter 70A.330 RCW, Petroleum Storage Tank Systems – Pollution Liability Protection Act.
Chapter 70A.305 RCW, Model Toxics Control Act (MTCA)
Chapter 173-340 WAC, Model Toxics Control Act-Cleanup.
Chapter 173.360A WAC, Underground Storage Tank Regulations.
Chapter 374-80 WAC, Advice and Technical Assistance Program.