Ancillary Processes


Ancillary processes are primarily related to secondary processes at a power generation facility.  Although, these processes are secondary, they have the ability to effect releases that may occur as a result of pre-combustion, combustion or post combustion activities.

Cooling Water Treatment





-          Trace Metals

-          Suspended Solids/Dissolved Solids


Water Treatment Chemicals

-           Chlorine

-           Hydrozene

-           Bromine

-           Sulfuric Acid

-           Activated Carbon



Cooling water discharge

-          Trace Metals

-          Residual Chlorine


Process Wastewater

-          Oil and Grease

-          Suspended Solids

-          Dissolved Solids



Facility Maintenance





  • Oils and Grease
  • Paints
  • Solvents
  • Paper
  • Insecticides/Pesticides
  • Steel
  • Lighting (Fluorescent, Incandescent, and Mercury Vapor)
  • Lab Chemicals




Hazardous Wastes

-          Spent solvents

-          Paint related waste (i.e. lead,

-          Spent Lamps

-          Off-spec Chemicals

-          Boiler Cleaning waste

-          Aerosol Can Residue


Non-Hazardous Wastes

-          Used oil (motor, hydraulic)

-          Oil Filters (motor, hydraulic)

-          Spent Lamps

-          Off-Spec Chemicals

-          Oily Rags 

-          Aerosol Cans

-          Scrap Metals

-          Paint Related Waste

-          Solvents

-          Paper, Plastic and Cardboard