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In-Water Regulatory Drivers. Spokane River. Summary of Category 5 Section (303d)Toxics Listings for the Spokane River, 2008 List. Summary of PCB Standards. pg/l= parts per quadrillion ug /kg= parts per billion. Water Quality Criteria for PCBs. Washington State

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summary of pcb standards
Summary of PCB Standards

pg/l= parts per quadrillion

ug/kg= parts per billion

water quality criteria for pcbs
Water Quality Criteria for PCBs

Washington State

  • Human Health (EPA National Toxics Rule)
    • 170 ppq (parts per quadrillion) in water
      • 6.5 grams per day consumption rate
      • Translates to 5.3 ppb (parts per billion) for fish tissue

Spokane Tribe

  • Human Health
    • 3.37 ppq in water
      • 86.3 grams per day consumption rate
      • Translates to 0.1 ppb for fish tissue