Status : Verified
| Personal Name | Eusebio, Dominador A. |
|---|---|
| Resource Title | Investigative Studies on Actual Plume Behavior Relative to the Predicted Values During Spill Episode Involving Light Non-Aqueous Phase Liquid (LNAPL) |
| Date Issued | July 2025 |
| Abstract | Hydrocarbon underground contamination particularly LNAPL remains a significant challenge in the regulation of subsurface pollution in the Philippines. On July 12, 2010, residents of West Tower Condominium (WTC) in Bgy. Bangkal, Makati City detected water leakage contaminated with gasoline fuel in its 4-level basement. Efforts to recover the oil from the extracted LNAPL-water mixture was done, potentially for reuse, using an oil-water separator system. In the recovery efforts, approximately 322,000 liters (equivalent to 1,610 drums) of LNAPL-water mixture were extracted. Monitoring wells were installed to measure LNAPL thickness, oil concentration of the groundwater, and map the contaminant plumes. The plumes demonstrate the behavior of LNAPL using data from 45 monitoring wells and give the extent of the contaminant area. After Environmental Site Assessments, FPIC and UP-NIGS developed the following hypotheses:1.) Fuel was dissolved by added volumes of groundwater and spread laterally; 2.) Fuel hid beneath the soil water column.; 3.) LNAPL portions were attached to the vadose zone and the unsaturated soil forming the solid phase component. A major unresolved issue is determining the fate of the estimated one million liters of spilled LNAPL, especially after groundwater levels rose due to rainfall—an event that coincided with a sudden contraction of the contaminant plume. And how long will it take to fully remediate the subsurface of the contaminated site. The study used the GMS AQUAVEO Modelling solution to investigate the LNAPL behavior underground and compare the results from the FPIC and UP-NIGS findings, and satisfy the following objectives: To analyze and explain the behavior of LNAPL plumes in relation to predicted values; To assess the performance and reliability of computer simulation models in replicating LNAPL plume behavior through quantitative comparison with field data; To analyze and characterize the movement and distribution of LNAPL plumes in the |
| Degree Course | PhD in Environment Engineering |
| Language | English |
| Keyword | Light Non-Aqueous Phase Liquid (LNAPL); Advection Dispersion Equation; PID; plume; MPE-multiphase extraction system |
| Material Type | Thesis/Dissertation |
Preliminary Pages
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Category : F - Regular work, i.e., it has no patentable invention or creation, the author does not wish for personal publication, there is no confidential information.
Access Permission : Open Access