Document ID: EPA-HQ-ORD-2013-0282-0009
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2013-09-25T04:00Z

Appendix 2: Proposed Choice Experiment Design

Description of variables:
x1 = North Full Body Contact: 2 levels. Current Condition is level 1, or safe wading only
x2 = South Full Body Contact: 2 levels. Current Condition is level 1, or safe wading only
x3 = North Flow & Forest: 3 levels. Current Condition is level 3, Expected Future is level 1
x4 = South Flow & Forest: 3 levels. Current Condition is level 3, Expected Future is level 1
x5 = Cost to household per year, 6 levels. Cost options range from zero (Expected Future and level 1), $10, $20, $30, $40, and $60 (level 6)

Nine survey blocks are proposed, of four choice questions (sets) each. The third alternative is always the Expected Future, no cost alternative.

                                                                          Block
                                                                            Set
                                                                            Alt
                                                                             x1
                                                                             x2
                                                                             x3
                                                                             x4
                                                                             x5
                                                                              1
                                                                              1
                                                                              1
                                                                              2
                                                                              2
                                                                              3
                                                                              3
                                                                              6

                                                                              2
                                                                              1
                                                                              1
                                                                              1
                                                                              3
                                                                              4

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              2
                                                                              1
                                                                              2
                                                                              2
                                                                              2
                                                                              2
                                                                              4

                                                                              2
                                                                              1
                                                                              2
                                                                              1
                                                                              1
                                                                              2

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              3
                                                                              1
                                                                              1
                                                                              2
                                                                              1
                                                                              3
                                                                              4

                                                                              2
                                                                              2
                                                                              2
                                                                              2
                                                                              1
                                                                              4

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              4
                                                                              1
                                                                              1
                                                                              1
                                                                              3
                                                                              1
                                                                              3

                                                                              2
                                                                              2
                                                                              2
                                                                              3
                                                                              3
                                                                              6

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              2
                                                                              1
                                                                              1
                                                                              1
                                                                              2
                                                                              3
                                                                              3
                                                                              5

                                                                              2
                                                                              2
                                                                              2
                                                                              1
                                                                              1
                                                                              2

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              2
                                                                              2
                                                                              1
                                                                              1
                                                                              2
                                                                              2
                                                                              2
                                                                              3

                                                                              2
                                                                              1
                                                                              2
                                                                              3
                                                                              3
                                                                              5

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              2
                                                                              3
                                                                              1
                                                                              2
                                                                              1
                                                                              3
                                                                              1
                                                                              4

                                                                              2
                                                                              2
                                                                              1
                                                                              1
                                                                              3
                                                                              3

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              2
                                                                              4
                                                                              1
                                                                              1
                                                                              2
                                                                              3
                                                                              2
                                                                              2

                                                                              2
                                                                              2
                                                                              1
                                                                              3
                                                                              2
                                                                              2

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              3
                                                                              1
                                                                              1
                                                                              2
                                                                              2
                                                                              1
                                                                              1
                                                                              1

                                                                              2
                                                                              1
                                                                              2
                                                                              2
                                                                              2
                                                                              3

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              3
                                                                              2
                                                                              1
                                                                              1
                                                                              2
                                                                              3
                                                                              2
                                                                              2

                                                                              2
                                                                              2
                                                                              1
                                                                              3
                                                                              2
                                                                              2

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              3
                                                                              3
                                                                              1
                                                                              2
                                                                              1
                                                                              2
                                                                              3
                                                                              2

                                                                              2
                                                                              2
                                                                              2
                                                                              1
                                                                              1
                                                                              2

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              3
                                                                              4
                                                                              1
                                                                              1
                                                                              2
                                                                              3
                                                                              2
                                                                              2

                                                                              2
                                                                              2
                                                                              1
                                                                              2
                                                                              3
                                                                              2

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              4
                                                                              1
                                                                              1
                                                                              2
                                                                              2
                                                                              3
                                                                              3
                                                                              5

                                                                              2
                                                                              2
                                                                              2
                                                                              2
                                                                              2
                                                                              4

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              4
                                                                              2
                                                                              1
                                                                              2
                                                                              2
                                                                              2
                                                                              2
                                                                              3

                                                                              2
                                                                              1
                                                                              1
                                                                              3
                                                                              2
                                                                              2

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              4
                                                                              3
                                                                              1
                                                                              1
                                                                              2
                                                                              1
                                                                              1
                                                                              2

                                                                              2
                                                                              2
                                                                              2
                                                                              1
                                                                              3
                                                                              3

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              4
                                                                              4
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              3
                                                                              4

                                                                              2
                                                                              2
                                                                              2
                                                                              3
                                                                              3
                                                                              6

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              5
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              2
                                                                              3
                                                                              1

                                                                              2
                                                                              1
                                                                              1
                                                                              3
                                                                              2
                                                                              2

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              5
                                                                              2
                                                                              1
                                                                              2
                                                                              2
                                                                              1
                                                                              3
                                                                              3

                                                                              2
                                                                              2
                                                                              1
                                                                              3
                                                                              1
                                                                              4

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              5
                                                                              3
                                                                              1
                                                                              2
                                                                              2
                                                                              3
                                                                              3
                                                                              6

                                                                              2
                                                                              2
                                                                              2
                                                                              2
                                                                              1
                                                                              5

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              5
                                                                              4
                                                                              1
                                                                              1
                                                                              2
                                                                              3
                                                                              2
                                                                              2

                                                                              2
                                                                              1
                                                                              1
                                                                              2
                                                                              3
                                                                              2

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              6
                                                                              1
                                                                              1
                                                                              1
                                                                              2
                                                                              2
                                                                              2
                                                                              4

                                                                              2
                                                                              1
                                                                              2
                                                                              1
                                                                              1
                                                                              2

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              6
                                                                              2
                                                                              1
                                                                              2
                                                                              1
                                                                              2
                                                                              1
                                                                              5

                                                                              2
                                                                              2
                                                                              2
                                                                              3
                                                                              3
                                                                              6

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              6
                                                                              3
                                                                              1
                                                                              2
                                                                              1
                                                                              1
                                                                              3
                                                                              3

                                                                              2
                                                                              2
                                                                              2
                                                                              2
                                                                              2
                                                                              4

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              6
                                                                              4
                                                                              1
                                                                              2
                                                                              2
                                                                              3
                                                                              3
                                                                              5

                                                                              2
                                                                              1
                                                                              1
                                                                              3
                                                                              1
                                                                              3

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              7
                                                                              1
                                                                              1
                                                                              2
                                                                              1
                                                                              1
                                                                              3
                                                                              3

                                                                              2
                                                                              1
                                                                              2
                                                                              1
                                                                              1
                                                                              2

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              7
                                                                              2
                                                                              1
                                                                              1
                                                                              2
                                                                              2
                                                                              2
                                                                              3

                                                                              2
                                                                              2
                                                                              1
                                                                              1
                                                                              3
                                                                              3

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              7
                                                                              3
                                                                              1
                                                                              2
                                                                              1
                                                                              3
                                                                              1
                                                                              4

                                                                              2
                                                                              2
                                                                              2
                                                                              2
                                                                              2
                                                                              3

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              7
                                                                              4
                                                                              1
                                                                              1
                                                                              2
                                                                              3
                                                                              3
                                                                              5

                                                                              2
                                                                              2
                                                                              1
                                                                              3
                                                                              1
                                                                              4

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              8
                                                                              1
                                                                              1
                                                                              2
                                                                              2
                                                                              3
                                                                              2
                                                                              2

                                                                              2
                                                                              1
                                                                              1
                                                                              2
                                                                              3
                                                                              2

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              8
                                                                              2
                                                                              1
                                                                              1
                                                                              1
                                                                              2
                                                                              3
                                                                              2

                                                                              2
                                                                              1
                                                                              1
                                                                              3
                                                                              2
                                                                              2

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              8
                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              3
                                                                              1
                                                                              3

                                                                              2
                                                                              2
                                                                              2
                                                                              1
                                                                              1
                                                                              2

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              8
                                                                              4
                                                                              1
                                                                              1
                                                                              2
                                                                              1
                                                                              3
                                                                              4

                                                                              2
                                                                              2
                                                                              2
                                                                              3
                                                                              3
                                                                              6

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              9
                                                                              1
                                                                              1
                                                                              2
                                                                              2
                                                                              1
                                                                              3
                                                                              3

                                                                              2
                                                                              1
                                                                              2
                                                                              1
                                                                              1
                                                                              2

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              9
                                                                              2
                                                                              1
                                                                              2
                                                                              2
                                                                              1
                                                                              1
                                                                              2

                                                                              2
                                                                              2
                                                                              1
                                                                              2
                                                                              3
                                                                              2

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              9
                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              3
                                                                              2
                                                                              2

                                                                              2
                                                                              2
                                                                              2
                                                                              2
                                                                              2
                                                                              3

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              9
                                                                              4
                                                                              1
                                                                              1
                                                                              2
                                                                              2
                                                                              2
                                                                              4

                                                                              2
                                                                              1
                                                                              1
                                                                              3
                                                                              1
                                                                              3

                                                                              3
                                                                              1
                                                                              1
                                                                              1
                                                                              1
                                                                              1