Prioritize Contaminated Sites With a Known Release and a Pathway That Poses the Greatest Threat of E

1
Prioritize Contaminated Sites With a Known
Release and a Pathway That Poses the Greatest
Threat of Exposure

• Pathways to surface water
• Freshwater wetlands, rivers, lakes
• Coastal marine, estuaries, inter-tidal wetlands
• Pathways to air
• Indoor residential
• Other
• Pathways to groundwater
• Large potable drinking waster sources
• Other

• Advantages/Disadvantages
• Risk-based approach that addresses both human
  health and ecological risks
• Non-specific ranking approach
• Other Considerations
• State input
• Public Input
• Sensitive or economically important ecosystems

2
Manage Remediation Based OnIndustry Sector
ChemicalsThere are a lot of chemicals Decide
which ones are at levels that pose a concern

• Typical Industry-Sector Chemicals
• Mining heavy metals
• Petroleum hydrocarbons
• Manufacturing heavy metals, solvents
• Energy heavy metals, hydrocarbons, solvents
• Transport hydrocarbons, solvents
• Agriculture pesticides, organic wastes
• Landfill metals, solvents, pesticides

• Look for patterns
• Chemical types and concentrations,
• Fate and transport behavior,
• Similarities landscape
• Creating industry-sector groupings maximizes
  opportunity to create templates/programs
• assessments,
• presumptive remedies
• Advantages/disadvantages
• Potential misses, but typically small risk
• Expedite progress, thus overall prevents risks
• Saves resources by being more effective

3
Manage Remediation Based on Industry-Sector
Create sub-lists based on patterns of Behavior
or Industry Sector Activity

• Petroleum Refineries, Chemical-processing,
  Manufacturing
• Above and Underground Storage Tanks
• Federal/state owners/operators
• Oil production
• Airports
• Railroads
• Harbors
• Mining
• Heavy metals
• Erosion control

• Interim listing Place a facility on notice if
  there is a potential concern based on exposure
  pathways and chemicals being used
• Final listing List a facility if you obtain
  information that affirms your concern

4
Promote Early Risk Reduction and Site
Stabilization at All Contaminated Sites

• Immediate (Emergency) Response
• Chemical or oil spills
• Other chemical releases
• Near-term Risk Reduction-Stabilization Measures
• Provide alternative drinking water
• Place a secure barrier
• Remove wastes posing the highest risks
• Permanently or temporarily move people
• Begin working on long-term cleanup remedy,
  concurrently or after risk reduction or
  stabilization is done

5
Promote Early Risk Reduction and Site
Stabilization at All Contaminated Sites

• Early risk reduction and site stabilization
  measures
• Expedite management of glaring risks.
• Government has more flexibility to make
  decisions.
• Long-term Remedial Actions
• Require a base-line risk assessment and an
  assessment of how the proposed remedies reduce or
  eliminate risk based on a variety of criteria.
• Requires greater investment of resources to
  formulate and implement, often requiring
  long-term monitoring.
• Requires a more formal decision-making process

Consider land-end use and promote land
revitalization
6
Border 2012 Program Binational Guidance on
Contaminated Site Clean-up and Revitalization

• Process for Cleanup and Revitalization
• Establish objectives and a decision-making
  framework
• Consider interim and final cleanup needs
• Optimize reuse through economic incentives and
  legal protections for redevelopment
• Provide for early and meaningful public
  participation.

Waste Policy Forum draft final work in progress
7
Promote Early Risk Reduction Site Stabilization
ActionsSEMARNAT is Already Using This Risk
Management Approach

• Metales y Derivados
• Lead battery recycling smelter
• US owner, operated 1986-1994, abandoned
• 7000 -10,000 tons lead-waste
• Industrial zone