Chapter 4 Assessment Methodology - Virginia DEQ

These are waters that are impaired but a TMDL has been developed and approved by EPA (Category 4A), waters where other pollutant control requirements are reasonably expected to result in attainment of designated use(s) (Category 4B) and waters that are naturally impaired (Category 4C). 6.Pollutant Caused Impaired or Threatened Waters Needing a TMDL ................
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