Mapping Data v3 ecf - TERC · 2016. 8. 24. · Mapping Data ©2013 TERC • Statistics for Action 1 6/4/2013 sfa.terc.edu Mapping Data aciitator nstructions Activity Overview Participants

Mapping Data ©2013 TERC • Statistics for Action 16/4/2013 sfa.terc.edu

Mapping DataFacilitator Instructions

Activity Overview Participants put data from a data table onto a map. Then they use the map to identify trends and hot spots.

When to Use ItWhen a group wants to look at data for geographic patterns.

Suggested companion activities:

• If the data or test results are new or confusing, precede with Making Sense of the Data.

• If the data are clear, precede with Compare to Standards, possibly at the same meeting as this activity. It is important to compare your data to health-based standards before mapping. Consult a fact sheet on the appropriate standard from the resource Limits and Levels.

Steps

1. Launch the activity: We have looked at our test results, and we know how they compare to [name of the health-based standard]. Now let’s map the data to see if there are patterns or hot spots.

2. In pairs or small groups: Copy each data point to the stickers (or sticky notes). Use a separate map for each contaminant or testing date. Use colors to indicate how concerning the results are. Facilitator: give participants a color scale to use. For example:

• Green: below the standard• Yellow: 1x to 5x the standard• Red: more than 5x the standard

3. Debrief: • What do you see? Are there trends or hot spots?• Could a map like this be useful in a campaign?

For the Facilitator: SupplementsTwo optional supplements are included. You can use one with a group that wants practice before trying with their own data, or in a workshop setting where there are no shared data. Data sets are included with and without a comparison to standards. Use the set without the comparison to standards if you want your group to practice comparing to standards as well. The completed maps are given as examples for your reference; you do not need to give them to participants.

Smart Moves

• Use your senses• Play with different ways to show and say it

Skill: Practice mapping data and looking for trends.

Time: 20 minutes

Materials: Large map of the sampling area, sample locations clearly marked. If there are many contaminants in one sample location, bring more than one map.

Small sticky notes or colored stickers that will fit on the map. Red, yellow, and green are ideal.

Copies of the data

Pens or markers

Calculators, if data isn’t compared to standards

Optional Supplements: Pond Sediment (simpler) Salvage Yard Soil (more complex). Each includes: a blank data set, a data set compared to standards, a blank map, and an example of a completed map.

PrepEnlarge the map, if needed

If data set is large, choose data of most concern

Plan in advance what your color scheme will be to fit your data. One example is given in (2) on left.

If using a Supplement, decide if the group will practice comparing to standards, or just mapping.

Ars 1.8x

Chro 1.5x

Lead 17.4x

Cad 20.1x

Ars 1.5x

Chro 1.5x

Lead 12.5x

Cad 12.0x

Ars 1.6x

Chro 1.1x

Lead 6.9x

Cadm 9.3x

Chro 0.7x

Lead 1.1x

Ars 0.4x

Chro 0.3x

Lead 0.2x

Cadm 1.9x

Ars 1.0x

Cadm 5.9x


Mapping DataWorksheet

Pond Sediment

Sediment Sample Results

Contaminant PSS-1 PSS-2 PSS-3 PSS-4 PSS-5 SQuiRTs TEL

Arsenic 10.5 8.93 9.26 5.73 2.16 5.9

Cadmium 12 7.18 5.57 3.5 1.12 0.596

Chromium 57.2 54.4 42.7 27 12.8 37.3

Lead 609 439 241 39.3 7.9 35

SQuiRTs TEL: National Oceanic and Atmospheric Administration (NOAA) Screening Quick Reference Tables, Freshwater Threshold Effects Levels. SQuiRTs are used for comparison purposes only.

All results in milligrams per kilogram (mg/kg)

ND = Not Detected

Worksheet: Compare to SQuiRT TEL


Arsenic 1.8 x 5.9

Cadmium 0.596

Chromium 37.3

Lead 35


Mapping DataData Set

Pond Sediment

Sediment Sample Results


Arsenic 10.5 8.93 9.26 5.73 2.16 5.9

Cadmium 12 7.18 5.57 3.5 1.12 0.596

Chromium 57.2 54.4 42.7 27 12.8 37.3

Lead 609 439 241 39.3 7.9 35

SQuiRTs TEL: National Oceanic and Atmospheric Administration (NOAA) Screening Quick Reference Tables, Freshwater Threshold Effects Levels. SQuiRTs are used for comparison purposes only.

All results in milligrams per kilogram (mg/kg)

ND = Not Detected

Worksheet: Compare to SQuiRT TEL


Arsenic 1.8 x 1.5 x 1.6 x 1.0 x 0.4 x 5.9

Cadmium 20.1 x 12.0 x 9.3 x 5.9 x 1.9 x 0.596

Chromium 1.5 x 1.5 x 1.1 x 0.7 x 0.3 x 37.3

Lead 17.4 x 12.5 x 6.9 x 1.1 x 0.2 x 35



Pond Sediment


Mapping DataFacilitator Supplement

Pond Sediment

Here’s a possible way to map the practice example using colored stickers:• Green: below or equal to the TEL • Yellow: more than the standard to 10x the TEL• Red: more than 10x the TEL

Ars 1.8x

Chro 1.5x

Lead 17.4x

Cadm 20.1x

Ars 1.5x

Chro 1.5x

Lead 12.5x

Cadm 12.0x

Ars 1.6x

Chro 1.1x

Lead 6.9x

Cadm 9.3x

Chro 0.7x

Lead 1.1x

Ars 0.4x

Chro 0.3x

Lead 0.2x

Cadm 1.9x

Ars 1.0x

Cadm 5.9x



Salvage Yard Soil

Sample Label

Arsenic in mg/kg x SSL Sample

LabelArsenic

in mg/kg x SSL

SS-01 7.7 19.7x SB-09 3.9

SS-02 5.8 SB-10 3.8

SB-02 4.9 SS-11 ND

SS-03 4.6 SS-12 ND

SB-03 4.4 SS-13 3.7

SS-04 6.3 SS-14 4

SB-04 3.9 SS-15 ND

SS-05 6 SS-16 6.6

SB-05 4.1 SS-17 6.1

SS-06 4.4 SS-18 5.5

SB-06 3.9 SS-19 4.3

SS-07 ND SS-20 5.3

SB-07 4.8 SS-21 6

SS-08 4.9 SS-22 4.4

SB-08 5 SS-23 3.4

SS-09 4.4 SS-24 3.2

Samples beginning with “SS” were taken 6 inches below the soil surface.Samples beginning with “SB” were taken 12 inches below the soil surface.EPA Region III Residential Soil Screening Level for Arsenic: 0.39ND = Not Detected


Mapping DataData Set

Salvage Yard Soil

Sample Label

Arsenic in mg/kg x SSL Sample

LabelArsenic

in mg/kg x SSL

SS-01 7.7 19.7x SB-09 3.9 10.0x

SS-02 5.8 14.9x SB-10 3.8 9.7x

SB-02 4.9 12.6x SS-11 ND --

SS-03 4.6 11.8x SS-12 ND --

SB-03 4.4 11.3x SS-13 3.7 9.5x

SS-04 6.3 16.2x SS-14 4 10.3x

SB-04 3.9 10.0x SS-15 ND --

SS-05 6 15.4x SS-16 6.6 16.9x

SB-05 4.1 10.5x SS-17 6.1 15.6x

SS-06 4.4 11.3x SS-18 5.5 14.1x

SB-06 3.9 10.0x SS-19 4.3 11.0x

SS-07 ND -- SS-20 5.3 13.6x

SB-07 4.8 12.3x SS-21 6 15.4x

SS-08 4.9 12.6x SS-22 4.4 11.3x

SB-08 5 12.8x SS-23 3.4 8.7x

SS-09 4.4 11.3x SS-24 3.2 8.2x

Samples beginning with “SS” were taken 6 inches below the soil surface.Samples beginning with “SB” were taken 12 inches below the soil surface. EPA Region III Residential Soil Screening Level for Arsenic: 0.39ND = Not Detected



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Mapping DataFacilitator Supplement

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Documents

Mapping Data v3 ecf - TERC · 2016. 8. 24. · Mapping Data ©2013 TERC • Statistics for Action 1 6/4/2013 sfa.terc.edu Mapping Data aciitator nstructions Activity Overview Participants