Documentation and Compliance
TERRA specializes in comprehensive environmental compliance for complex infrastructure projects, delivering integrated LSP services that ensure regulatory adherence while maintaining project schedules and budgets
Scope of Work
Multi-RTN Coordination and LSP Consolidation (310 CMR 40.0000)
Management of five separate Release Tracking Numbers
Integration of work from five previous LSPs
Consolidation of historical data and reports spanning 29 years
Reconciliation of different assessment approaches and data gaps
Unified remedial strategy across all RTNs
Comprehensive Site Assessment and Remediation (310 CMR 40.0900)
Complete gasoline station removal and demolition
Contaminated soil excavation across multiple release areas
Light Non-Aqueous Phase Liquid (LNAPL) recovery operations
Groundwater assessment and monitoring
Source area elimination and impact delineation
Method 1/2 Risk Characterization with EPA BIOSCREEN Modeling (310 CMR 40.0996, 40.1000)
Method 1 comparison to numerical groundwater standards
Method 2 site-specific risk assessment where exceedances remain
EPA BIOSCREEN fate and transport modeling
Demonstration of natural attenuation capacity
No significant risk determination for residual contamination
Response Action Outcome and Site Delisting (310 CMR 40.1000, 40.1003)
Permanent Solution Statement submittal
Documentation of no significant risk achievement
Completion of all five RTNs
MassDEP site delisting after 29 years
Release of property for unrestricted redevelopment
Historical Gasoline Station
TERRA Environmental served as Senior Project Manager and Licensed Site Professional (LSP) for remediation of a historical gasoline station in Somerville with five release tracking numbers (RTNs) under MassDEP regulations and previous involvement by five Licensed Site Professionals prior to TERRA's engagement. Environmental activities encompassed comprehensive site assessment and remediation including gasoline station removal, contaminated soil excavation, and non-aqueous phase liquid recovery operations. Remedial approach included extensive assessment activities followed by Method 1/2 Risk Characterization supported by EPA's BIOSCREEN modeling software, demonstrating achievement of no significant risk levels for site closure. Project resulted in successful regulatory closure and site delisting after 29 years on the MassDEP list since 1992, making the property available for redevelopment in 2021.
Complex historical gasoline station remediation with five RTNs and multi-LSP coordination: Comprehensive site management addressing five release tracking numbers with coordination of previous work by five Licensed Site Professionals over 29-year remediation timeline
Advanced risk assessment with Method 1/2 Risk Characterization and EPA BIOSCREEN modeling: Sophisticated risk evaluation utilizing EPA's BIOSCREEN modeling software to demonstrate no significant risk achievement for regulatory closure
Comprehensive petroleum remediation with soil excavation and LNAPL recovery operations: Complete gasoline station removal including contaminated soil excavation and non-aqueous phase liquid recovery addressing multiple petroleum release areas
Long-term regulatory closure achievement with 29-year MassDEP site delisting success: Successful site closure and delisting from MassDEP registry after nearly three decades, enabling property redevelopment opportunities
Philip Peterson
Project Team
Jesse Vaughan
Somerville Gas Station
Project Highlights
Complex historical gasoline station remediation with five RTNs and multi-LSP coordination
Advanced risk assessment with Method 1/2 Risk Characterization and EPA BIOSCREEN modeling
Comprehensive petroleum remediation with soil excavation and LNAPL recovery operations
Long-term regulatory closure achievement with 29-year MassDEP site delisting success