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OTHER CONTINGENCIES AND COMMITMENTS (Tables)
9 Months Ended
Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Environmental Remediation Liability
The Utility’s environmental remediation liability is primarily included in non-current liabilities on the Condensed Consolidated Balance Sheets and is comprised of the following:
Balance at
(in millions)September 30, 2019December 31, 2018
Topock natural gas compressor station$382  $369  
Hinkley natural gas compressor station143  146  
Former manufactured gas plant sites owned by the Utility or third parties (1)
586  520  
Utility-owned generation facilities (other than fossil fuel-fired),
  other facilities, and third-party disposal sites (2)
115  111  
Fossil fuel-fired generation facilities and sites (3)
116  137  
Total environmental remediation liability$1,342  $1,283  
(1) Primarily driven by the following sites: Vallejo, San Francisco East Harbor and Outside East Harbor, Napa, Beach Street, San Francisco North Beach.
(2) Primarily driven by the Geothermal landfill and Shell Pond site.
(3) Primarily driven by the San Francisco Potrero Power Plant.