District Attorney Gregory D. Totten announced the settlement of a suit between the county and Southern California Edison.
SCE agreed to pay about $170,000 to resolve environmental allegations.
Laws require the filing of a hazardous materials business plan or HMBP for all 47 SCE electrical transformers.
The transformers contain combustible mineral oil that would requires a specialized response in the event of a fire.
A self audit by SCE found that the company had not submitted all the of required materials.
A majority of the financial settlement cover the cost of the investigation.