API 4733 : 2004

Section 1. Executive Summary
Section 2. Introduction
Section 3. Conceptual Site Model
  3.1 Receptor Evaluation
  3.2 Pathway Evaluation
      3.2.1 Soil Ingestion
      3.2.2 Water Ingestion
      3.2.3 Direct Ingestion
      3.2.4 Dermal Absorption
      3.2.5 Inhalation
      3.2.6 Plant Ingestion
  3.3 Summary of the CSM for Livestock
Section 4. Toxicity Reference Values and Risk-Based Screening
           Levels
  4.1 Exposure Assessment
  4.2 Exposure Assumptions
      4.2.1 Body Weight
      4.2.2 Dietary Composition
      4.2.3 Food Ingestion Rate
      4.2.4 Incidental Soil Ingestion Rate (IRsoil)
      4.2.5 Water Ingestion Rate (IRwater)
      4.2.6 Site Use Factor (SUF)
  4.3 Effects Assessment
  4.4 Crude Oil
      4.4.1 Development of Crude Oil TRVs for Livestock
      4.4.2 Development of Crude Oil Drinking Water RBSLs and
            Soil RBSLs for Livestock
  4.5 Benzene, Toluene, Ethylbenzene, and Xylene (BTEX)
      4.5.1 Development of BTEX TRVs for Livestock
      4.5.2 Development of BTEX Drinking Water RBSLs and Soil
            RBSLs for Livestock
  4.6 Polycyclic Aromatic Hydrocarbons (PAHs)
      4.6.1 Development of PAH TRVs for Livestock
      4.6.2 Development of PAH Drinking Water RBSLs and Soil
            RBSLs for Livestock
Section 5. Uncertainty Analysis
  5.1 Exposure Assumptions
  5.2 Development of TRVs and RBSLs
Section 6. Analysis of Other Guidelines for Livestock
           Protection
  6.1 Canada-Wide Standards (CWS; CCME 2000)
  6.2 Alberta Environment (2001)
Section 7. Summary
Section 8. References
Tables
Figure

Provides toxicity values and screening guidelines for evaluating risks to livestock from exposure to petroleum hydrocarbons. Addresses how to determine whether livestock should be included in a risk evaluation, and estimate risks of petroleum hydrocarbon exposures to livestock.