Navigating the Massachusetts Contingency Plan (MCP) for Property Developers: A Comprehensive Guide
- TERRA

- Jun 26
- 3 min read
Updated: Jul 6
Property development in Massachusetts often involves navigating complex environmental regulations, particularly when dealing with potentially contaminated sites. The Massachusetts Contingency Plan (MCP) provides the regulatory framework for addressing oil and hazardous material releases, but understanding its requirements and procedures can be challenging for developers. This comprehensive guide breaks down the MCP process and explains how property developers can successfully navigate these regulations to keep projects on track.
Understanding the Massachusetts Contingency Plan
The Massachusetts Contingency Plan, codified at 310 CMR 40.0000, is the state's comprehensive regulation governing the assessment and cleanup of contaminated sites. Implemented in 1993, the MCP established a privatized cleanup program that allows Licensed Site Professionals (LSPs) to oversee environmental remediation on behalf of the Massachusetts Department of Environmental Protection (MassDEP).
Key Features of the MCP:
Privatized oversight through Licensed Site Professionals
Risk-based cleanup standards
Streamlined regulatory processes
Flexibility in remediation approaches
Clear timelines and requirements
When Does the MCP Apply to Your Development?
Property developers encounter MCP requirements in several scenarios:
Common Triggers:
Discovery of contamination during due diligence
Historical industrial or commercial land uses
Underground storage tank removals
Soil and groundwater impacts from spills
Vapor intrusion concerns
Brownfield redevelopment projects
Mandatory Reporting Thresholds: Developers must report to MassDEP when contamination exceeds specific thresholds, including:
Spills of 10+ gallons of petroleum products
Any release creating a sheen on surface water
Contamination reaching drinking water wells
Discovery of floating petroleum products on groundwater
Key MCP Requirements for Developers
Licensed Site Professional Oversight
All MCP activities require LSP oversight. Your LSP serves as:
Technical expert and project manager
Regulatory liaison with MassDEP
Compliance certifier
Risk assessment specialist
Choosing the Right LSP:
Verify current license status
Review relevant project experience
Evaluate technical expertise
Assess regulatory relationships
Reporting and Documentation
The MCP requires specific submittals and timelines:
Critical Deadlines:
2-hour reporting: Immediate hazards and large releases
72-hour reporting: Reportable concentrations in drinking water
120 days: Completion of Phase I Initial Site Investigation
3 years: Completion of comprehensive response actions
Required Submittals:
Release Tracking Number (RTN) application
Phase I through Phase V reports
Remedial Action Plans
Public involvement plans
Permanent Solution Statements
Financial Assurance and Liability
Liability Considerations:
Joint and several liability for responsible parties
Potential third-party claims
Long-term stewardship obligations
Insurance coverage requirements
Cost Planning: Budget for comprehensive environmental costs including:
LSP oversight and reporting
Site investigation and monitoring
Remediation implementation
Long-term maintenance
Regulatory review fees
Developer Strategies for MCP Compliance
Early Environmental Due Diligence
Pre-Acquisition Assessment:
Conduct thorough Phase I Environmental Site Assessments
Review historical records and aerial photographs
Identify potential contamination sources
Evaluate regulatory compliance history
Risk Evaluation:
Assess cleanup costs and timelines
Evaluate development timeline impacts
Consider alternative remediation approaches
Plan for contingency scenarios
Project Integration and Timing
Construction Coordination:
Integrate environmental work with construction schedules
Plan for soil management and disposal
Coordinate utility installations with remediation
Schedule monitoring well installation strategically
Phased Development Approaches:
Prioritize clean areas for immediate development
Phase contaminated area cleanup with construction
Implement interim measures for protection
Plan long-term monitoring integration
Stakeholder Communication
Community Engagement:
Develop public involvement plans early
Communicate environmental progress transparently
Address community concerns proactively
Coordinate with local officials
Regulatory Relationships:
Maintain open communication with MassDEP
Provide timely submittals and responses
Address regulatory comments constructively
Plan for inspection and review periods
Common MCP Challenges and Solutions
Timeline Management
Challenge: Environmental cleanup timelines conflicting with development schedules Solution: Early engagement, parallel processing, and contingency planning
Cost Control
Challenge: Unexpected contamination discoveries increasing project costs
Solution: Comprehensive due diligence, contingency budgeting, and phased approaches
Regulatory Complexity
Challenge: Navigating complex MCP requirements and deadlines
Solution: Experienced LSP partnership and proactive regulatory communication
Technical Implementation
Challenge: Integrating remediation with development infrastructure
Solution: Early coordination between environmental and engineering teams
Emerging Trends and Considerations
PFAS Contamination
Per- and polyfluoroalkyl substances (PFAS) are increasingly detected at development sites, requiring:
Specialized sampling and analysis
Evolving regulatory requirements
Advanced treatment technologies
Long-term monitoring considerations
Climate Resilience
Climate change impacts on contaminated sites require consideration of:
Sea level rise and flood risks
Extreme weather event planning
Remediation system resilience
Long-term effectiveness evaluation
Technology Integration
New technologies are improving MCP compliance through:
Real-time monitoring systems
Advanced remediation techniques
Digital documentation and reporting
Automated compliance tracking
TERRA Environmental's Licensed Site Professionals bring decades of experience helping property developers successfully navigate the MCP process throughout Massachusetts. Our comprehensive approach ensures your development projects move forward efficiently while maintaining full regulatory compliance.




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