Appendix 3.6: Chronic Effects Benchmarks

Appendix 3.6: Chronic Effects Benchmarks

October 2013 SHELL CANADA ENERGY Appendix 3.6: Chronic Effects Benchmarks Project Number: 13-1346-0001 REPORT APPENDIX 3.6: CHRONIC EFFECTS BENCHMARKS Table of Contents 1.0 INTRODUCTION ............................................................................................................................................................... 1 2.0 CHRONIC EFFECTS BENCHMARKS ............................................................................................................................. 1 2.1 Updated Canadian Council of Ministers of the Environment Protocol .................................................................. 2 2.2 Application ........................................................................................................................................................... 2 2.3 Screening of Constituents for Chronic Effects Benchmark Development ............................................................ 3 2.4 Assessment Methods .......................................................................................................................................... 6 2.4.1 General Approach .......................................................................................................................................... 6 2.5 Procedure ............................................................................................................................................................ 9 2.5.1 Step 1: Creation of a Toxicological Database ................................................................................................ 9 2.5.2 Step 2: Statistical Analysis of Toxicity Data ................................................................................................. 14 2.5.3 Step 3: Identification of Chronic Effects Benchmark .................................................................................... 14 2.6 Chronic Effects Benchmark Results for Metals .................................................................................................. 15 2.6.1 Aluminum ..................................................................................................................................................... 15 2.6.2 Antimony ...................................................................................................................................................... 18 2.6.3 Arsenic ......................................................................................................................................................... 19 2.6.4 Barium .......................................................................................................................................................... 22 2.6.5 Beryllium ...................................................................................................................................................... 22 2.6.6 Boron ........................................................................................................................................................... 22 2.6.7 Cadmium ...................................................................................................................................................... 22 2.6.8 Chromium .................................................................................................................................................... 27 2.6.9 Cobalt ........................................................................................................................................................... 28 2.6.10 Copper ......................................................................................................................................................... 28 2.6.11 Iron ............................................................................................................................................................... 32 2.6.12 Lead ............................................................................................................................................................. 36 2.6.13 Manganese .................................................................................................................................................. 37 2.6.14 Mercury ........................................................................................................................................................ 38 2.6.15 Aquatic Benchmark Derivation ..................................................................................................................... 39 2.6.16 Molybdenum ................................................................................................................................................ 46 October 2013 Project No. 13-1346-0001 i APPENDIX 3.6: CHRONIC EFFECTS BENCHMARKS 2.6.17 Nickel ........................................................................................................................................................... 49 2.6.18 Silver ............................................................................................................................................................ 51 2.6.19 Strontium ...................................................................................................................................................... 53 2.6.20 Vanadium ..................................................................................................................................................... 64 2.6.21 Zinc .............................................................................................................................................................. 64 2.7 Chronic Effects Benchmark Results for Polycyclic Aromatic Hydrocarbons ...................................................... 66 2.7.1 Anthracene ................................................................................................................................................... 67 2.7.2 Fluoranthene ................................................................................................................................................ 69 2.7.3 Fluorene ....................................................................................................................................................... 70 2.7.4 Naphthalene ................................................................................................................................................. 72 2.7.5 Phenanthrene .............................................................................................................................................. 73 2.7.6 Pyrene .......................................................................................................................................................... 75 2.7.7 Application of Polycyclic Aromatic Hydrocarbon Compounds to Groups ..................................................... 76 2.8 Chronic Effects Benchmark Results for Other Constituents .............................................................................. 76 2.8.1 Ammonia ...................................................................................................................................................... 76 2.8.2 Naphthenic Acids ......................................................................................................................................... 77 2.8.3 Sulphide ....................................................................................................................................................... 79 2.8.4 Dissolved Solids ........................................................................................................................................... 79 2.8.5 Sulphate ....................................................................................................................................................... 83 2.8.6 Total Phenolics ............................................................................................................................................ 86 2.9 Selected Chronic Effects Benchmarks ............................................................................................................... 87 3.0 REFERENCES ................................................................................................................................................................ 90 3.1 Personal Communications ............................................................................................................................... 102 TABLES Table 2.3-1 Water Quality Assessment Constituents Considered for the Assessment ..................................................... 3 Table 2.5-1 Compounds and Indicators Included in Polycyclic Aromatic Hydrocarbon Groups ...................................... 10 Table 2.6-1 Available Chronic Freshwater Toxicity Data for Aluminum Retained for Species Sensitivity Distribution ................................................................................................................................................... 16 Table 2.6-2 Available Chronic Freshwater Toxicity Data for Arsenic .............................................................................. 20 Table 2.6-3 Summary of Compiled Chronic (Long-term) Freshwater Aquatic Toxicity Tests With Cadmium Exposures, Indicating Preferred Test Endpoint for Each Study, and Species Mean Values ....................... 24 October 2013 Project No. 13-1346-0001 ii APPENDIX 3.6: CHRONIC EFFECTS BENCHMARKS Table

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