Methods for Deriving Pesticide Aquatic Life Criteria - Reviews of Environmental Contamination and Toxicology - page 19

Chapter 2
Methods for Deriving Pesticide Aquatic
Life Criteria

Patti L. TenBrook, Ronald S. Tjeerdema, Paul Hann,
and Joseph Karkoski

Contents
1 Introduction.......................................................................................................................... 20

2 Summary of Major Methodologies Reviewed ..................................................................... 22

3 Water Quality Policy ............................................................................................................ 25

4 Criteria Types and Uses ....................................................................................................... 28

4.1 Numeric Criteria Versus Advisory Concentrations .................................................... 28

4.2 Numeric Criteria of Different Types and Levels......................................................... 29

5 Protection and Confi dence ................................................................................................... 30

5.1 Levels of Biological Organization to Protect.............................................................. 31

5.2 Portion of Species to Protect....................................................................................... 32

5.3 Probability of Over- or Underprotection..................................................................... 33

6 Ecotoxicity and Physical-Chemical Data ............................................................................ 34

6.1 Data Sources and Literature Search............................................................................ 34

6.2 Data Quality................................................................................................................ 35

6.3 Data Quantity-Ecotoxicity ......................................................................................... 39

6.4 Kinds of Data .............................................................................................................. 43

6.5 Data Reduction ........................................................................................................... 59

7 Criteria Calculation .............................................................................................................. 62

7.1 Exposure Considerations ............................................................................................ 62

7.2 Basic Methodologies................................................................................................... 71

7.3 Other Considerations in Criteria Derivation ............................................................... 87

8 Summary .............................................................................................................................. 96

References.................................................................................................................................. 98

P.L. TenBrook
Current affiliation: U.S. EPA Region 9, 75 Hawthorne Street, San Francisco, CA 94105.