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Appendix B

Tables of Acres Where Concentrations Exceed Water Quality Thresholds by NRCS Region and by State

  • Table B1. Acres (1,000) Where the Potential Atrazine Leaching Concentration at the Bottom of the Root Zone Exceeds a Multiple of EPA's Maximum Contaminant Level (3 ppb)
  • Table B2. Acres (1,000) Where the Potential Atrazine Runoff Concentration at the Edge of the Field Exceeds a Multiple of EPA's Maximum Contaminant Level (3 ppb)
  • Table B3. Acres (1,000) Where the Potential Metolachlor Leaching Concentration at the Bottom of the Root Zone Exceeds a Multiple of EPA's Health Advisory (70 ppb)
  • Table B4. Acres (1,000) Where the Potential Metolachlor Runoff Concentration at the Edge of the Field Exceeds a Multiple of EPA's Health Advisory (70 ppb)
  • Table B5. Acres (1,000) Where the Potential Alachlor Leaching Concentration at the Bottom of the Root Zone Exceeds a Multiple of EPA's Maximum Contaminant Level (2 ppb)
  • Table B6. Acres (1,000) Where the Potential Alachlor Runoff Concentration at the Edge of the Field Exceeds a Multiple of EPA's Maximum Contaminant Level (2 ppb)
  • Table B7. Acres (1,000) Where the Potential Simazine Leaching Concentration at the Bottom of the Root Zone Exceeds a Multiple of EPA's Maximum Contaminant Level (4 ppb)
  • Table B8. Acres (1,000) Where the Potential Simazine Runoff Concentration at the Edge of the Field Exceeds a Multiple of EPA's Maximum Contaminant Level (4 ppb)
  • Table B9. Acres (1,000) Where the Potential Cyanazine Leaching Concentration at the Bottom of the Root Zone Exceeds a Multiple of EPA's Health Advisory (1 ppb)
  • Table B10. Acres (1,000) Where the Potential Cyanazine Runoff Concentration at the Edge of the Field Exceeds a Multiple of EPA's Health Advisory (1 ppb)
  • Table B11. Acres (1,000) Where the Potential Concentration at the Bottom of the Root Zone Exceeds a Multiple of the Water Quality Thresholds for One or More of Atrazine, Metolachlor, Alachlor, Cyanazine, or Simazine.
  • Table B12. Acres (1,000) Where the Potential Concentration at the Edge of the Field Exceeds a Multiple of the Water Quality Thresholds for One or More of Atrazine, Metolachlor, Alachlor, Cyanazine, or Simazine.

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