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• Hot Spots Risk Assessment Guidelines
• Multimedia Risk Assessment
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• CEEIN
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Risk Assessment

Risk assessment is a scientific process of evaluating the adverse effects caused by a substance, activity, lifestyle, or natural phenomenon. OEHHA is responsible for developing and providing risk managers in state and local government agencies with toxicological and medical information relevant to decisions involving public health. State agency users of such information include all boards and departments within Cal/EPA, as well as the Department of Public Health, the Department of Food and Agriculture, the Office of Emergency Services, the Department of Fish and Game, and the Department of Justice.

• Environmental Protection Indicators for CA (EPIC) - Recent Research on Climate Change: An annotated bibliography with an emphasis on California
  [10/15/13]
• Air Toxicology and Epidemiology - Estimating Workplace Air and Worker Blood Lead Concentration using an Updated Physiologically-based Pharmacokinetic
  (PBPK) Model
  [10/04/13]
• Proposition 65 - Notice of Proposed Rulemaking Title 27, California Code of Regulations Proposed Amendment of Section 25703(A)(6) Quantitative Risk Assessment
  [07/29/11]
• Ecotoxicology - Impervious Surface Coefficients User’s Guide and Calculator
  [12/31/10]
• Environmental Protection Indicators for California (EPIC) - Indicators of Climate Change in California: Environmental Justice Impacts
  [12/31/10]
• Green Chemistry - Notice of Proposed Rulemaking Title 22, California Code of Regulations, Sections 69401 Through 69406 Green Chemistry Toxics Information Clearinghouse Identification of Hazard Traits, Endpoints and Other Relevant Data for Inclusion In The Toxics Information Clearinghouse
  [12/17/10]
• List of California Human Health Screening Levels (CHHSLs)
  [09/23/10]
• Soil Screening Levels (CHHSLs) - Soil Screening Levels - Notice of the Availability of California Human Health Screening Levels for Ethylbenzene and Perchlorate
  [09/23/10]
• 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]
• Green Chemistry - August 23, 2010 Public Workshop Availabiility of Pre-Regulatory Draft Regulation for Hazard Traits and Environmental and Toxicological Endpoints
  [08/11/10]
• Higher Temperatures Increase Hospitilizations for Many Serious Ailments
  [03/02/10]
• Child-Specific Reference Dose - 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]
• Child-Specific Reference Dose - Notice of a Public Comment Period and Public Workshop on the Child-Specific Reference Dose (chRD) for Paraquat for use in Assessing Health Risks at Existing and Proposed School Sites
  [12/04/09]
• Soil Screening Levels - Notice of the Availability of Draft Reports on California Human Health Screening Levels for Ethylbenzene and Perchlorate
  [12/04/09]
• Notice of the Availability of Reports on Revised California Human Health Screening Levels for Lead and Beryllium
  [09/17/09]
• Soil-Screening Numbers (mg/kg soil) for Nonvolatile Chemicals Based on Total Exposure to Contaminated Soil: Inhalation, Ingestion and Dermal Absorption
  [09/17/09]
• Soil-Gas-Screening Numbers for Volatile Chemicals below Buildings Constructed With and Without Engineered Fill below Sub-slab Gravel
  [09/17/09]
• Revised California Human Health Screening Level for Lead (Review Draft)
  [05/18/09]
• Indicators of Climate Change in California
  [04/17/09]
• Final Documents: Development of a Reference Dose (RfD) for Methamphetamine and Assessment of Children’s Exposure to Surface Methamphetamine Residues in Former Clandestine Methamphetamine Labs, and Identification of a Risk-Based Cleanup Standard for Surface Methamphetamine Contamination
  [02/27/09]
• Announcement of a Public Comment Period on the Documents Development of a Reference Dose (RfD) for Methamphetamine and Assessment of Children’s Exposure to Surface Methamphetamine Residues in Former Clandestine Methamphetamine Labs, and Identification of a Risk-Based Cleanup Standard for Surface Methamphetamine Contamination
  [12/26/08]
• Acute Toxicity Studies Results on the Light Brown Apple Moth Pheromone Active Ingredient and Four LBAM Pheromone Products
  [11/04/08]
• Announcement of a Public Comment Period and Notice of the Availability of a Draft Report on California Human Health Screening Levels for Beryllium
  [09/26/08]
• LBAM (Light Brown Apple Moth) Press Release
  [4/10/08]
• LBAM Illness Report - Summary of Symptom Reports in Areas of Aerial Pheromone Application for Management of the Light Brown Apple Moth in Monterey and Santa Cruz Counties September, October, and November 2007
  [04/10/08]
• Adulterated Candy: Maximum Allowable Lead Levels. Notice of Public Workshops to Receive Information Relevant to the Development of Standards for Lead in Candy Wrappers and for the Naturally-Occurring Level of Lead in Candies Flavored with Tamarind or Chili
  [02/05/08]
• Notice of Joint Public Workshops on the Development of the Health-Based Target Remediation Standard for Methamphetamine
  [12/12/07]
• Human Hazard Assessment for Perchlorate in Upland Game from the Potrero Canyon Unit in the San Jacinto Wildlife Area, Riverside County [02/16/07]