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5492875 
Technical Report 
Use of particle tracking to improve numerical model calibration and to analyse ground-water flow and contaminant migration, Massachusetts Military Reservation, Western Cape Cod, Massachusetts 
Masterson, JP; Walter, DA; Savoie, J 
1996 
50 
English 
A steady-state, 3-dimensional numerical model (MODFLOW) was coupled with a particle tracking algorithm (MODPATH) to simulate the complex hydrogeological conditions affecting groundwater flow and contaminant transport in the Cape Cod aquifer underlying the Massachusetts Military Reservation. The contaminants of principal concern were chlorinated organic solvents and fuel byproducts such as various chloroethylene derivatives, benzene and ethylene dibromide, some of which had been detected in the groundwater at levels up to 1200 mg per litre. The known extents of 4 of the 9 known contaminant plumes beneath the reservation were incorporated into a particle-tracking analysis to refine the model calibration. While changes in simulated hydrological properties and boundaries had only minor effects on water tables and streamflows, they substantially influenced groundwater flow pathways. These were greatly influenced by subtle shifts in hydraulic gradients induced by external factors such as pumping and recharge, both of which were of importance for the overall groundwater body in the area. There are 54 references. 
Analysis; Chloroethylene; Modelling (-general-); Aqualine Abstracts