NEW : 1 million gallons of dispersants used in oil spill . Louisiana environmental group calls for halt to dispersant use , despite EPA findings . EPA says dispersant currently being used is less toxic than others . But a New Orleans-based environmental group is expressing qualms about the dispersant and the massive amounts being dumped in the Gulf . Agency making no recommendations until more tests complete .
NEW : 1 million gallons of dispersants used in oil spill . Louisiana environmental group calls for halt to dispersant use , despite EPA findings . EPA says dispersant currently being used is less toxic than others . Agency making no recommendations until more tests complete .