Toxics Cleanup > Policies & Guidance

Policies & Guidance

• Policies, Procedures, and Technical Memorandum
  
  

• Vapor Intrusion Guidance  
  
  

• Guidance for the Remediation of Petroleum Contaminated Sites 

  
  

  Ecology recently completed guidance for investigation and cleanup of petroleum contaminated sites under the Model Toxics Control Act (MTCA) Cleanup Regulation. 
   
  This document updates and replaces “Guidance for Remediation of Petroleum Contaminated Soils” (Ecology Publication No. 91-30, dated November, 1995).  A draft of this revised guidance was released in November, 2010 for public comment.  In response to comments received on that draft, several revisions have been made to this final guidance.  These include, among other things: discussion of the movement and challenges of remediating LNAPL; clarifying several regulatory requirements, including the application of the professional licensing laws to site investigations and cleanups; revising the discussion of age dating releases; revisions to the analytical methods discussion, including the role of silica gel cleanup; and, addressing the reuse of petroleum contaminated soils in road construction. 
  
  

  How does this document differ from the 1995 guidance?

  
  This document makes a number of major changes to that earlier guidance.   These changes were made in response to implementation questions that people have raised as they investigate and cleanup petroleum releases.    Major changes include: 
  
  • Scope substantially increased to address all types of petroleum contaminated sites and media, not just releases from underground storage tanks to soils.
  • Updated to reflect changes in regulations since the 1995 guidance was published.
  • Provides more information on release reporting, site characterization, establishing cleanup levels, and measuring compliance with cleanup levels.
  • Updates permit-related information.
  • Provides new guidelines regarding the re-use of petroleum contaminated soil.
    
  
  

• Guidance on Remediation of Petroleum-Contaminated Ground Water by Natural Attenuation (July 2005)



• Presentation Materials for Public Workshops (11/9/05 in Seattle)
  
  
  • Part A (0.9 mb): misc
  • Part B (1.5 mb): Jerome Cruz's Presentation
  • Part C (4.3 mb): Hun Seak Park's Presentation
  • Part D (1.7 mb): Jeff Kaspar's Presentation
• Publication Notice (Publication No. 05-09-091 (Version 1.0))
• Read me first!
• Guidance, User’s Manual, & Data Analysis Tool Package (two pdf documents and two MS Excel Workbooks for 2003 version) (4.2mb) Please note that a compact disk and a hardcopy containing the "Guidance, User's Manual, & Data Analysis Tool Package" can also be obtained by contacting Ann McNeely, Publications Coordinator (360-407-7205).
• Guidance on Remediation of Petroleum-Contaminated Ground Water by Natural Attenuation
• User's Manual:  Natural Attenuation Analysis Tool Package for Petroleum-Contaminated Ground Water

Important:  Attempting to open the file(s) directly from the web will result in an error. Instead, save the file when the “file download” dialogue box comes up after clicking on the link below.  You should then be able to open the saved file and use the workbook. 
• For Excel version 2003:
• Package A - Natural Attenuation Tool Package (Modules 1,2 and 3)
• Package B - Natural Attenuation Tool (Modules 4,5 and 6)
• For Excel version 2007:
• Package A - Natural Attenuation Tool Package (Modules 1,2 and 3)
• Package B - Natural Attenuation Tool (Modules 4,5 and 6)

An Assessment of Laboratory Leaching Tests for Predicting the Impacts of Fill Material on Ground Water and Surface Water Quality
--A Report to the Legislature -- December 2003

EPA Method 5035A -- June 22, 2004

Terrestrial Ecological Evaluation Process - An Interactive User's Guide Added August 2001

Workbook Tools for Calculating Soil and Ground Water Cleanup Levels under the Model Toxics Control Act Cleanup Regulation and User's Guide.

Brownfields Guidance & Information Updated March 2006

• EnviroMapper for Brownfields. This U.S. EPA tool combines interactive maps and aerial photography to locate, display and query brownfields grant types by the areas/jurisdictions of city, county, state, and tribe.

Natural Background Soil Metals Concentrations in Washington State

Steps in Cleanup Process

State Tax Incentives for Environmental Remedial Action
Due to budget concerns, the Model Toxics Control Act (MTCA) tax exemptions expired June 30, 2003. Please see the following Dept. of Revenue NOTICE for information on how remedial actions are to be taxed from now on.

• Environmental Remedial Action Sunsets