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Region 10 Guidance Documents

This page displays a list of all guidance documentsHelpGuidance DocumentsAgency statements of general applicability, intended to have future effects on the behavior of regulated parties, that set forth a policy on a statutory, regulatory, or technical issue, or an interpretation of a statute or regulation, with some exceptions as detailed in E.O. 13891, Section 2(b). managed by EPA's Region 10 office. EPA's guidance documents lack the force and effect of law, unless expressly authorized by statute or incorporated into a contract. The agency may not cite, use, or rely on any guidance that is not posted on this website, except to establish historical facts.

Region 10: Seattle (serving AK, ID, OR, WA and 271 native tribes)

Document Name
(click on link to view)
Original Issue Date Date Added to this List Identifier Topic Description/Summary
Framework for Selecting and Using Tribal Fish and Shellfish Consumption Rates for Risk-Based Decision Making at CERCLA and RCRA Cleanup Sites in Puget Sound and the Strait of Georgia 2007-08-01 2020-02-28 910-Region-LSASD-2007-0001 Tribal fish and shellfish consumption; Superfund; RCRA; Puget Sound Conceptual framework for selecting and using tribal fish and shellfish consumption rates for purposes of estimating site-related risks at EPA hazardous waste cleanup sites in Puget Sound and the portion of the Strait of Georgia that is within the United States. It is specifically intended for use at sites that are addressed through the Resource Conservation and Recovery Act (RCRA) and the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA, also known as Superfund.)
Data Review and Validation Guidelines for Perfluoroalkyl Substances (PFASs) Analyzed Using EPA Method 537 (PDF)(47 pp, 469 K, About PDF) 2018-11-01 2020-02-28 EPA 910-R-10-001 Quality control (QC); Perfluoroalkyl substances (PFAS); EPA Method 537 Guidance regarding how to validate analytical results obtained using EPA Method 537 for non-potable water matrices while EPA is developing other methods for this purpose.
Executing Risk-Based LUST Site Closures in R10 Indian Country 2015-01-15 2020-02-28 910-Region-LCRD-2015-0001 Underground Storage Tanks (UST) Guidance on executing risk-based leaking underground storage tank (LUST) site closures in Region 10 Indian Country based on human health considerations.
Guidance on Major/Minor Designation for NPDES Facilities in Region 10 2018-02-01 2020-02-28 910-Region-WD-2018-0001 National Pollutant Discharge Elimination System (NPDES) Guidance and instructions for processing changes to major and minor designations for new and existing NPDES facilities within Region 10.
Guidance for Quality Assurance Project Plans for Water Quality Modeling Projects 2016-12-01 2020-02-28 EPA 910-R-16-007 Quality Assurance Project Plan (QAPP), Water Quality Monitoring This guidance is focused specifically on Quality Assurance Plans (QAPPs) for surface water quality models. This guidance is intended to improve QAPP development by focusing on the unique challenges and practical constraints facing water quality modelers. 
Interim Final Guidance: Developing Risk-Based Cleanup Levels at Resource Conservation and Recovery Act Sites in Region 10 1998-01-01 2020-02-28 EPA 910-R-98-001

Risk assessment and risk-based cleanup levels, RCRA Corrective action facilities

The guidance document sets forth recommended approaches to conduct risk assessment and other activities which are integral to the process of developing risk-based cleanup levels at RCRA corrective action facilities in Region 10 of the U.S. EPA. This guidance is intended for use by U.S.EPA Region 10 personnel and RCRA-regulated facilities undergoing corrective action or clean closures in Region 10.

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