Risk-based site evaluation guidance

This form is applicable to all Remediation Division programs (January 2016)

• Surface Water Toxics Impact Assessment Request form (c-rem4-44)

Guidance for estimating the cancer potency of mixtures of polycyclic aromatic hydrocarbon (PAH) mixtures in environmental samples (MDH)

This guidance recommends a revised method to evaluate carcinogenic PAHs (cPAHs) using relative potency factors (RPF) instead of potency equivalence factors (PEF) and an alternative surrogate mixture method using 7X the concentration of benzo[a]pyrene (BaP). Six new cPAHs were added to the list to analyze and ten were removed. (Minnesota Department of Health; February 8, 2016)

MPCA Interim Policy. Although it is MPCA's practice to adopt MDH's guidance, since laboratory analytical methods are not available to analyze the six additional cPAH compounds added to the RPF list, it is not feasible at this time. MPCA and MDH are working together to develop analytical methods for the new cPAH compounds. Once analytical methods have been established MPCA will re-evaluate the feasibility of implementing this guidance. Until then, MPCA will continue to use the PEF method to evaluate human health risks from cPAHs. 

• Introduction and overview
• Glossary of RBSE terms and concepts
• RBSE checklist

• Executive Summary
• Document (September 1998, 95 pages)

• Air Impacts Evaluation
• Community Involvement in Risk-Based Decision Making
• Groundwater Guidance
• Natural Attenuation of Chlorinated Solvents in Groundwater
• Remedy Selection
• Sediments - Human Health and Ecological Evaluation
• Risk-Based Site Characterization and Sampling Guidance
• Guidance on Incorporation of Planned Property Use into Site Decisions
• Risk-Based Guidance for the Soil-Human Health Pathway User's Guide
• Surface Water Pathway Evaluation
• Best Management Practices for the Off-Site Reuse of Excess Fill from Development Sites (c-rem1-01)

• User's guide: Risk-based guidance for the soil-human health pathway (Aug. 1998)
• Draft guidelines - Risk-based guidance for the soil-human health pathway, Volume 2, Technical Support Document (Jan. 1999, 287 pages)

• Remediation Division Soil Leaching Pathway Spreadsheet
• Soil Leaching Values

• Guidance for Monitoring for Landfill Gas at and Near Former Dumps

• Working draft: Surface Water Pathway Evaluation User's Guide (c-s4-01)
• Appendices (file size = 2.6 MB) (c-s4-01a) 
•  Surface Water Toxics Impact Assessment Request form (c-rem4-44)
• Table 8: Tier 1 Surface Water Screening Numbers for all Non-ORVW or OIRW Waters (c-s4-01b)
• Table 9: Tier 2 Surface Water Standards and Criteria for Classes 1B, 2A, 3A or 3B, 3C, 4A, 4B, and 5 Waters (c-s4-01c)
• Table 10: Tier 2 Surface Water Standards and Criteria for Classes 1B or 1C, 2Bd, 3A or 3B, 3C, 4A, and 5 Waters )c-s4-01d)
• Table 11: Tier 2 Surface Water Standards and Criteria for Classes 2B or 2C, or 2D, 3A or 3B or 3C or 3D, 4A or 4B or 4C, and 5 Waters (c-s4-01e)
• Table 12: Tier 2 Surface Water Standards and Criteria for Classes 7, 3C, 4A, 4B, and 5 Waters (c-s4-01f)

• DRAFT - Ground water policy document (1998)
• Executive Summary
• Please access current drinking water criteria on MDH and EPA’s websites.
• Guidelines for natural attenuation of chlorinated solvents in ground water (May 2000, Revised June 2006) (c-s4-05)

• Remedy selection guidance
• Executive summary - Remedy selection guidance (1998)

• Draft guidelines, guidance on incorporation of planned property use into site decisions (September 1998, 29 pages)
• Affidavit Concerning Real Property Contaminated with Hazardous Substances (c-rem4-02)
• Environmental Covenant and Easement (c-rem4-03)
• Consent of Mortgage Form