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1. MINTEQA2 - An Equilibrium Speciation Model [EPA_MINTEQA2]
MINTEQA2 is a equilibrium speciation model that can be used to calculate the equilibrium composition of dilute aqueous solutions in the laboratory or in natural aqueous systems. The model is useful ...

2. Hydrological Simulation Program - FORTRAN (HSPF) [EPA_HSPF]
The Hydrological Simulation Program - FORTRAN (HSPF) is a comprehensive package for simulation of watershed hydrology and water quality for both conventional and toxic organic pollutants. ...

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