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Child-Specific Reference Doses (chRDs)

• List of All chRDs Finalized to Date
• Child-Specific Reference Dose - Notice of an extension to the Public Comment Period on the Child-Specific Reference Dose (chRD) for Paraquat for use in Assessing Health Risks at Existing and Proposed School Sites
  [11/04/10]
• Child-Specific Reference Dose - Notice of an extension to the Public Comment Period on the Child-Specific Reference Dose (chRD) for Paraquat for use in Assessing Health Risks at Existing and Proposed School Sites
  [09/24/10]
• Child-Specific Reference Dose - Notice of a Public Comments Period on the Child-Specific Reference Dose (chRD) for Paraquat for use in Assessing Health Risks at Existing and Proposed School Sites
  [08/12/10]
• Final Report Development of Health Criteria for School Site Risk Assessment Pursuant to Health and Safety Code Section 901(g): Child-Specific Reference Dose (chRD) for School Site Risk Assessment: Chlorpyrifos
  [06/17/10]
• Announcement of a Public Comment Period for the Final Draft on the Child-Specific Reference Dose (chRD) for Chlorpyrifos for Use in Assessing Health Risks at Existing and Proposed School Sites [02/04/10]
• Announcement of a Public Comment Period Extension: Paraquat
  [01/01/10]
• Guidance for Assessing Exposures and Health Risks at Existing and Proposed School Sites Notice of Availability - updated spreadsheet available
  [10/29/09]
• Announcement of a Public Comment Period Extension: Chlorpyrifos
  [01/07/08]
• Notice of the Availability of an Evaluation Report on Malathion
  [11/30/07]
• Notice of the Availability of an Evaluation Report on Dieldrin
  [11/30/07]
• Announcement of a Public Comment Period and Public Workshop: Public Comments on the Child-Specific Reference Dose (chRD) for Chlorpyrifos for Use in Assessing Health Risks at Existing and Proposed School Sites
  [11/30/07]
• Final Report: “Development of Health Criteria for School Site Risk Assessment Pursuant to Health and Safety Code Section 901(g): Child-Specific Reference Doses (chRDs) for School Site Risk Assessment: Atrazine and Deltamethrin.”
  [10/04/07]
• Announcement of a Public Comment Period: Public Comments on the Child-specific Reference Doses (chRD) for Atrazine and Deltamethrin for Use in Assessing Health Risks at Existing and Proposed School Sites
  [07/13/07]
• Final Report “Development of Health Criteria for School Site Risk Assessment Pursuant to Health and Safety Code Section 901(g): Child-Specific Reference Doses (chRDs) for School Site Risk Assessment: Manganese and Pentachlorophenol
  [07/03/06]

• Announcement of a Public Comment Period: Public Comments on the Child-specific Reference Doses (chRDs) for Manganese and Pentachlorophenol for Use in Assessing Health Risks at Existing and Proposed School Sites
  [04/14/06]

• Announcement of a Public Comment Period and Public Workshop on the Child-specific Toxicity Criteria for Endosulfan and Lead for Use in Assessing Health Risks at Existing and Proposed School Sites
  [3/17/06]

• Announcement of a Public Comment Period and Public Workshop
  Public comments on the child-specific Reference Dose (chRD) for atrazine and deltamethrin for use in assessing health risks at existing and proposed School Sites
  [01/26/06]

• Development of Health Criteria for School Site Risk Assessment Pursuant to Health and Safety Code Section 901(g): Child-Specific Reference Doses (chRDs) for School Site Risk Assessment – Cadmium, Chlordane, Heptachlor, Heptachlor Epoxide, Methoxychlor, and Nickel Final Report
  [12/23/05]

• Announcement of Document and Public Comment Period: Final Draft Report “Development of Health Criteria for School Site Risk Assessment Pursuant to Health and Safety Code Section 901(g): Proposed Child-Specific Reference Dose (chRD) for School Site Risk Assessment: Cadmium, Chlordane, Heptachlor, Heptachlor Epoxide, Methoxychlor, and Nickel.
  [11/02/05]

• Announcement of a Public Workshop and Extension of a Previously Announced Comment Period on the Draft Child-Specific Reference Doses (chRD) for Pentachlorophenol and Manganese for Use in Assessing Health Risks at Existing and Proposed School Sites
  [12/17/04]

• Notice to Interested Parties: Announcement of a Public Comment Period
  Public Comments on the Child-specific Reference Dose (chRD) for Manganese and Pentachlorophenol for Use in Assessing Health Risks at Existing and Proposed School Sites
  [12/03/04]

• Announcement of a Public Comment Period Public Comments on the Final Draft Guidance for Assessing Exposures and Health Risks at Existing and Proposed School Sites
  [11/13/03]

• Announcement of the Public Release and a Public Workshop to Discuss and Receive Public Input on "Draft Proposed Child-Specific Reference Doses (chRD) for School Site Risk Assessment: Cadmium, Chlordane, Heptachlor/Heptachlor Epoxide, Methoxychlor, and Nickel."
  [06/23/03]

• Notice to Interested Parties: Announcement of a Public Comment Period
  Public Comments on the Draft Guidance for Assessing Exposures and Health Risks at Existing and Proposed School Sites
  [12/20/02]

• Notice of Document Availability: Development of Health Criteria for School Site Risk Assessment Pursuant to Health and Safety Code 901(g). Identification of Potential Chemical Contaminants of Concern at California School Sites
  [06/07/02]