LiORA Site Prioritization: Data-Driven Site Management - Case Study
Executive Summary
LiORA`s monitoring system successfully guided remediation decision-making at a contaminated site in an urban area, where historical impacts had migrated onto neighboring property near residential buildings. Through integrated soil and water monitoring, LiORA provided real-time assessment of remediation effectiveness and Natural Source Zone Depletion rates, enabling data-driven decisions about transitioning from active remediation to natural attenuation management. As a result, the management team transitioned this site into a closure process, allowing them to deploy the remediation system at another site and increase operational efficiency.
Project Background Site Challenges
A contaminated site next to a residential complex presented urban environmental challenges. With historical contamination extending beyond property boundaries onto neighbouring land and the proximity to residential buildings raising concerns about vapour intrusion, there was a need for a rapid remediation response in an urban setting. Critical decision required: when to transition from active to passive management
Remediation Implementation
Historical data review confirmed immediate remediation needs:
- Active Treatment: 8 BioLodestone injection points installed to promote biodegradation
- Soil Monitoring: 4 Soil Sensors deployed to monitor subsurface conditions
- Plume Understanding: 2 Water Sensors to monitor groundwater effectiveness
Key Results
Remediation Effectiveness Assessment
LiORA`s monitoring provided definitive evidence of treatment performance:
- Active Treatment Success: Real-time data demonstrated BioLodestone injection effectiveness in promoting biodegradation.
- NSZD Rate Quantification: Continuous monitoring enabled precise calculation of Natural Source Zone Depletion rates, providing a scientific basis for transition decisions.
- Risk Reduction: Ongoing monitoring confirmed a reduction in vapour intrusion risk to residential buildings.
Conclusion
LiORA`s comprehensive monitoring at this site successfully transformed remediation decisionmaking from an assumption-based to an evidence-based approach. Through integrated monitoring, LiORA provided the real-time intelligence necessary to optimize the transition from active remediation to natural attenuation while maintaining residential protection.
The project`s success in identifying optimal transition timing while ensuring protective effectiveness demonstrates the value of continuous monitoring in complex urban scenarios. Most importantly, the insights enabled better prioritization of remediation activities across other sites, optimizing resource allocation and improving overall portfolio management.
This case study establishes LiORA as an essential technology for site managers, balancing protective effectiveness with resource optimization, thereby transforming site management from reactive to proactive, data-driven decision-making.