Mercury in Wastewater Investigation – Confidential Manufacturing Facilities – Eastern and Southwestern, Ohio

STONE was contracted by separate entities in eastern and southwestern Ohio to sample wastewater to determine the presence and possible sources of mercury which caused the discharges from each company to exceed allowable local limits. Composite sampling of process wastewater was performed at one location, while grab samples were collected at another location. Samples were analyzed using USEPA approved low-level mercury analytical methods. At one location, the results were used to justify that the facility was not a major mercury discharger to the local wastewater treatment facility. The other testing was used to determine whether the mercury entering the wastewater resulted from in-plant sources.

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