National Contingency Plan

• National Oil and Hazardous Substances Pollution Contingency Plan

RI/FS Guidance

• Guidance for Conducting Remedial Investigations and Feasibility Studies Under CERCLA

NTCRA Guidance

• NTCRA Guidance

Risk Assessment Guidance Documents

• Calculating Upper Confidence Limits for Exposure Point Concentrations at Hazardous Waste Sites (OSWER 9285.6-10, December 2002)
• Child-Specific Exposure Factors Handbook (EPA-600/P-00/002B, September 2002)
• Ecological Risk Assessment Guidance for Superfund: Process for Designing & Conducting Ecological Risk Assessments
• EPA Region 1 Supplemental Risk Assessment Guidance for the Superfund Program Part 1: Public Health Risk Assessment (EPA 901/5/89-001,June, 1989) [Not available on-line]
• EPA Region 1 Risk Updates, (EPA, 1994; 1995; 1996; 1999) [Only 1996 and 1999 available on-line:
• Establishment of Cleanup Levels for CERCLA sites with Radioactive Contamination (OSWER 9200.4-18, August 22, 1997)
• Exposure Factors Handbook (EPA-600/P-95/002F, December 1997)
• Final Guidance for Data Usability in Risk Assessment (Part A) (OSWER 9285.7-09A)
• A Graded Approach for Evaluating Radiation Doses to Aquatic and Terrestrial Biota (USDOE, 2002)
• Guidance for Comparing Background and Chemical Concentrations in Soil for CERCLA Sites (OSWER 9285.7-41, September 2002)
• Guidance for Data Usability in Risk Assessment (Part B) (OSWER 9285.7-09B, May 1992)
• Guidelines for Ecological Risk Assessment (EPA, 1998)
• Guidance for Evaluating the Vapor Intrusion to Indoor Air Pathway from Groundwater and Soils (Draft) (EPA, 2002)
• Human Health Evaluation Manual, Supplemental Guidance "Standard Default Exposure Factors" (OSWER 9285.6-03, March 25, 1991)
• Human Health Toxicity Values in Superfund Risk Assessments (OSWER No. 9285.7-53, December 2003)
• IRIS Database for Risk Assessment
• Risk Assessment Guidance for Superfund (RAGS).  Volume I:  Human
• Health Evaluation Manual (Part A) (EPA 540/1/-89, December, 1989)
• Risk Assessment Guidance for Superfund. Volume 1: Human Health Evaluation Manual, Development of Risk-Based Preliminary Remediation Goals (Part B) (OSWER 9285.7-01B, December 1991)
• Risk Assessment Guidance for Superfund. Volume 1: Human Health Evaluation Manual, Risk Evaluation of Remedial Alternatives (Part C) (OSWER 9285.7-01C, December 1991)
• Risk Assessment Guidance for Superfund. Volume 1: Human Health Evaluation Manual, (Part D) (EPA-540/1-89/002, December 2001)
• Risk Assessment Guidance for Superfund. Volume 1: Human Health Evaluation Manual, Supplemental Guidance for Dermal Exposure Assessment (Part E) (EPA/540/R/99/005, July 2004)
• Risk Assessment Guidance for Superfund. Volume III: (Part A) Process for Conducting Probabilistic Risk Assessment (EPA/540/R/02/002, December 2001)
• Role of Background in the CERCLA Cleanup Program (OSWER 9285.6-07P, April 26, 2002)
• Soil Screening Guidance for Radionuclides: Technical Background Document and Users Guide. (EPA/540-R-00-006 and -007, October, 2000)
• Supplemental Guidance for Developing Soil Screening Levels for Superfund Sites (OSWER 9355.4-24, December 2002)
• The Role of Screening-Level Risk Assessments and Refining contaminants of Concern in Baseline Ecological Risk Assessments, ECO Update
• Use of Soil Cleanup Criteria for 40 CFR Part 192 as Remediation Goals for CERCLA Sites, (OSWER Directive 9200.4-25, February 12, 1998)
• Use of Uranium Drinking Water Standards under 40 CFR 141 and 40 CFR 192 as Remediation Goals for Groundwater at CERCLA Sites, (OERR and ORIA Directive No. 9283.1-14, November 6, 2001)

• User's Guide: Radionuclide Carcinogenicity (HEAST User Guide)
• Particulate Emission Factor/ Screening Level Equation for External Exposure
• EPA Guidance for Quality Assurance Project Plans
• EPA New England Compendium of Quality Assurance Project Plan Requirements and Guidance [Not available on-line]
• EPA QA/G-4D Data Quality Objectives Decision Errors Feasibility Trials (DEFT) Software for the Data Quality Objectives Process [Not available on-line]
• EPA Requirements for Quality Assurance Project Plans
• EPA Requirements for Quality Management Plans
• Guidance for Data Quality Assessment: Practical Methods for Data Analysis
• Guidance for Preparing Standard Operating Procedures (SOPs)
• Guidance for the Data Quality Objectives Process
• Guidance for the Data Quality Objectives Process for Hazardous Waste Site Investigations
• Region 1, EPA – New England Data Validation Functional Guidelines for Evaluating Environmental Analyses
• Test Methods for Evaluating Solid Waste, Physical/Chemical Methods
• The Multi-Agency Radiation Survey and Site Investigation Manual(MARSSIM) [Not available on-line]

Useful Links:

• EPA website that provides a summary of the Superfund remedial process
• EPA Superfund overview presentation