What are the best free contaminated site remediation resources for preliminary cleanup planning?

Here are some of the best free resources for preliminary contaminated site remediation planning. I’ve grouped them by what they’re useful for so you can quickly find the right starting point.

1) Core federal guidance

US EPA Brownfields & Superfund resources

Best for: early-stage cleanup planning, site assessment, remediation options, cleanup standards

• EPA Brownfields program: guidance on site assessment, planning, and redevelopment
• EPA Superfund guidance: investigation, remedy selection, and cleanup documentation
• EPA CLU-IN (Cleanup Information Network): one of the best free technical libraries for contaminated site cleanup

Why it’s useful:

• Plain-language summaries plus technical documents
• Case studies and remedy overviews
• Searchable by contaminant, media, or remedy type

2) Site investigation and decision tools

CLU-IN technical pages

Best for: identifying likely contaminants and candidate cleanup technologies
Includes:

• Conceptual site model resources
• Technology overviews
• Contaminant-specific treatment info
• Optimization and monitoring guidance

EPA TRI/Envirofacts and mapping tools

Best for: checking nearby industrial sources, release history, and context
Useful free tools:

• Envirofacts
• TRI Explorer
• My Environment

3) State environmental agency guidance

Best for: cleanup standards and regulatory expectations in your jurisdiction
Most states publish free:

• Voluntary cleanup program manuals
• Risk-based cleanup guidance
• Soil and groundwater standards
• Sample work plans and closure requirements

If you tell me your state or country, I can point you to the most relevant ones.

4) Remediation technology references

Best for: comparing cleanup methods before you hire consultants
Good free sources include:

• EPA remediation technology fact sheets
• ITRC guidance documents
  ITRC is especially useful for practical, applied cleanup planning on:
  • PFAS
  • vapor intrusion
  • petroleum releases
  • chlorinated solvents
  • emerging contaminants

5) Risk and exposure planning

Best for: deciding whether cleanup should focus on soil, groundwater, vapor, or direct contact risk
Look for:

• Human health risk assessment basics
• Exposure pathway checklists
• Conceptual site model templates
• Ecological screening guidance

6) Costing and project planning

Best for: rough budget and schedule estimates
Free resources include:

• EPA case studies with cleanup costs
• State brownfield grant guidance
• ITRC implementation notes
• Published remedy cost comparisons in remediation manuals

7) Environmental data and background research

Best for: historical use and adjacent-property screening
Useful free tools:

• Sanborn maps / historic aerials from local libraries or GIS portals
• USGS topo maps
• Local GIS parcels and zoning maps
• State geologic/hydrogeologic surveys

8) Academic and practical manuals

Best for: understanding cleanup methods without paywalled consulting reports
Search for:

• University extension publications
• Remediation engineering handbooks available through libraries
• Open-access journal articles on specific contaminants and technologies

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Best “starter pack” if you want only a few resources

1. EPA CLU-IN
2. EPA Brownfields/Superfund guidance
3. Your state environmental agency’s cleanup program pages
4. ITRC guidance
5. Historic site-use maps and local GIS

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What to look for in preliminary cleanup planning

When using these resources, focus on:

• Contaminant type and likely sources
• Soil vs. groundwater vs. vapor impacts
• Exposure pathways
• Cleanup goals and regulatory standards
• Candidate remedies
• Site access, utilities, and constraints
• Waste handling/disposal considerations
• Monitoring and verification needs

If you want, I can also give you:

1. a short list of the most useful URLs,
2. a step-by-step preliminary remediation planning checklist, or
3. resources tailored to a specific contaminant like PFAS, petroleum, solvents, metals, or asbestos.