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State Data

On this page:

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Overview

Potential statistical 'outliers' were determined separately for each state. Specifically, outliers are defined here as soil lead results that are two and three standard deviations greater than the average. Spatial outliers were defined using Anselin's Local Moran's I statistic to identify observations that were statistically significantly different from other nearby observations.1 The spatial outliers include observations that are surrounded by observations with significantly lower concentrations. The definition of spatial outlier used here also includes local clusters of two or more observations with significantly higher concentrations than surrounding observations.

It is important to note that labeling an observation as an 'outlier' does not imply there is something necessarily 'wrong' with the observation; e.g., outliers should not automatically be omitted from an analysis or discarded as invalid. The method for handling outliers varies depending on the objectives of the analysis. Furthermore, there are many ways to define outliers; the definition that is used should support the objective of the analysis. The objective of this web site is to simply describe the data. The effect of the outliers on summary statistics of the data is illustrated by comparing the statistics in the tables provided below. The user is encouraged to download the data for further exploration and analysis, including a determination of which observations should be considered outliers, given the objectives of their analysis.


1 Anselin, 1995. Local Indicators of Spatial Association-LISA. Geographical Analysis, 27(2). April. 93-115. Available online at: http://onlinelibrary.wiley.com/doi/10.1111/j.1538-4632.1995.tb00338.x/pdf.

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Alabama State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Alabama 85 14.2 0.8 15.6 7.6 0.534 0.3 9.6 12.2 17.4 24.9 29.6 39.3 39.3

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Alabama 83 13.6 0.7 14.8 6.6 0.484 0.3 9.1 12.1 17.1 23.9 28.0 31.8 31.8

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Arizona State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Arizona 177 23.7 1.3 25.9 17.9 0.753 6.3 15.7 20.1 26.3 35.6 42.5 123.0 161.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Arizona 173 21.4 0.7 22.5 8.8 0.411 6.3 15.6 20.0 26.1 32.7 39.2 50.8 59.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Arkansas State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Arkansas 87 20.7 1.5 23.2 14.0 0.680 0.3 12.9 18.0 23.9 28.7 46.6 105.0 105.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Arkansas 85 19.1 1.0 20.8 9.3 0.488 0.3 12.9 18.0 23.5 28.4 33.1 57.7 57.7

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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California State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
California 258 19.7 1.3 21.8 20.4 1.032 3.0 12.6 16.8 20.9 28.1 33.2 92.7 263.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
California 255 17.9 0.5 18.8 8.4 0.467 3.0 12.5 16.8 20.7 27.8 32.3 48.6 70.1

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Colorado State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Colorado 165 45.4 11.4 64.3 147.0 3.240 8.9 20.9 24.4 30.6 39.3 51.5 1010.0 1610.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Colorado 163 29.8 2.2 33.5 27.8 0.932 8.9 20.8 24.3 30.5 38.8 46.8 170.0 312.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Connecticut State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Connecticut 9 49.9 8.1 65.0 24.3 0.487 19.1 30.6 38.2 68.8 88.8 88.8 88.8 88.8

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Connecticut 9 49.9 8.1 65.0 24.3 0.487 19.1 30.6 38.2 68.8 88.8 88.8 88.8 88.8

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Delaware State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Delaware 2 18.2 4.4 46.0 6.2 0.342 13.8 13.8 18.2 22.6 22.6 22.6 22.6 22.6

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Delaware 2 18.2 4.4 46.0 6.2 0.342 13.8 13.8 18.2 22.6 22.6 22.6 22.6 22.6

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Florida State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Florida 89 6.4 0.5 7.3 4.8 0.753 0.3 2.5 4.7 11.1 11.3 14.0 29.0 29.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Florida 88 6.2 0.5 6.9 4.2 0.683 0.3 2.5 4.7 11.1 11.3 13.5 16.3 16.3

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Georgia State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Georgia 94 13.2 0.9 14.7 8.9 0.670 2.7 6.7 11.4 15.8 25.1 31.0 53.0 53.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Georgia 93 12.8 0.8 14.2 7.9 0.615 2.7 6.7 11.4 14.7 24.4 29.5 38.7 38.7

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Idaho State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Idaho 131 25.2 4.3 32.3 48.8 1.936 5.5 15.2 18.5 21.9 26.6 32.7 158.0 541.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Idaho 130 21.2 1.6 23.9 18.0 0.846 5.5 15.2 18.4 21.8 26.6 32.2 119.0 158.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Illinois State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Illinois 88 26.4 1.2 28.5 11.5 0.434 14.0 20.3 24.0 28.1 38.4 47.0 103.0 103.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Illinois 87 25.6 0.9 27.0 8.0 0.314 14.0 20.2 23.8 28.0 36.5 45.6 54.1 54.1

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Indiana State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Indiana 57 30.7 7.2 42.8 54.4 1.771 8.2 18.6 21.0 25.7 29.5 78.5 423.0 423.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Indiana 56 23.7 1.7 26.6 13.0 0.547 8.2 18.6 21.0 25.5 28.8 47.3 83.9 83.9

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Iowa State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Iowa 91 23.1 0.7 24.1 6.2 0.270 8.4 19.4 21.7 25.3 29.9 35.0 48.5 48.5

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Iowa 89 22.5 0.5 23.4 5.1 0.229 8.4 19.4 21.6 24.7 29.8 32.5 38.2 38.2

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page


Kansas State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Kansas 132 26.6 3.3 32.0 37.9 1.427 9.8 19.1 21.3 25.9 32.4 38.0 66.9 450.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Kansas 131 23.3 0.7 24.5 7.7 0.332 9.8 19.0 21.3 25.9 31.8 37.7 51.9 66.9

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page


Kentucky State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Kentucky 64 29.2 2.5 33.3 20.1 0.689 12.4 19.0 22.4 28.9 43.6 85.9 111.0 111.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Kentucky 61 25.7 1.6 28.4 12.5 0.488 12.4 19.0 22.3 26.5 38.7 43.6 85.9 85.9

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page


Louisiana State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Louisiana 75 21.2 1.6 23.9 14.0 0.659 6.7 11.8 18.7 25.7 34.1 46.7 90.8 90.8

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Louisiana 73 19.5 1.1 21.2 9.0 0.464 6.7 11.8 18.3 24.8 31.8 36.2 47.2 47.2

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page


Maine State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Maine 53 35.4 5.6 44.7 40.4 1.142 7.2 19.2 22.9 32.1 59.4 91.7 233.0 233.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Maine 51 28.1 2.2 31.8 15.9 0.567 7.2 19.1 22.6 31.1 43.2 68.4 91.7 91.7

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page


Maryland State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Maryland 18 42.2 8.8 57.5 37.1 0.879 11.7 19.0 27.6 45.9 117.0 150.0 150.0 150.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Maryland 18 42.2 8.8 57.5 37.1 0.879 11.7 19.0 27.6 45.9 117.0 150.0 150.0 150.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Massachusetts State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev

Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Massachusetts 14 72.2 20.6 108.6 77.0 1.067 24.2 34.2 53.4 71.6 109.0 327.0 327.0 327.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev

Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Massachusetts 13 52.6 6.8 64.7 24.5 0.466 24.2 34.2 44.3 64.9 76.4 109.0 109.0 109.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Michigan State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Michigan 95 17.1 0.8 18.4 7.4 0.432 8.3 12.6 15.2 18.5 28.0 31.2 56.6 56.6

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Michigan 93 16.4 0.6 17.4 5.7 0.347 8.3 12.6 15.1 18.2 24.5 28.9 35.6 35.6

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Minnesota State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Minnesota 137 16.6 0.4 17.3 4.9 0.292 3.6 13.7 16.1 18.2 21.8 26.6 34.6 37.2

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Minnesota 134 16.2 0.4 16.8 4.1 0.251 3.6 13.5 16.0 18.2 20.8 22.8 29.2 29.8

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Mississippi State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Mississippi 77 22.2 2.8 26.9 24.7 1.110 4.5 12.7 16.4 21.8 33.6 52.7 181.0 181.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Mississippi 75 18.6 1.2 20.6 10.3 0.552 4.5 12.3 16.0 21.6 32.0 43.1 55.1 55.1

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Missouri State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Missouri 115 29.2 2.8 33.9 30.5 1.044 9.3 20.0 24.0 28.4 36.9 47.1 176.0 298.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Missouri 113 25.5 0.9 27.0 9.7 0.380 9.3 20.0 23.9 27.8 35.7 42.1 57.9 87.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Montana State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Montana 239 19.8 0.7 21.0 10.9 0.550 4.2 14.6 17.2 21.1 27.5 40.3 61.9 113.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Montana 232 18.4 0.4 19.1 6.5 0.352 4.2 14.6 17.2 20.6 25.2 31.6 42.3 47.4

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Nebraska State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Nebraska 130 18.9 0.8 20.3 9.4 0.495 9.1 14.8 18.5 21.6 25.2 26.4 29.2 110.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Nebraska 129 18.2 0.4 18.9 4.8 0.264 9.1 14.8 18.5 21.5 24.8 26.3 28.9 29.2

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Nevada State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Nevada 171 80.2 58.4 176.7 763.1 9.521 6.1 16.8 21.1 25.5 30.2 33.0 76.5 10000.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Nevada 170 21.8 0.6 22.8 7.8 0.356 6.1 16.8 21.1 25.2 30.1 31.3 50.3 76.5

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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New Hampshire State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
New Hampshire 15 54.6 10.9 73.7 42.0 0.770 20.4 28.1 36.2 73.5 112.0 174.0 174.0 174.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
New Hampshire 15 54.6 10.9 73.7 42.0 0.770 20.4 28.1 36.2 73.5 112.0 174.0 174.0 174.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page


New Jersey State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
New Jersey 13 75.5 29.3 127.7 105.6 1.399 13.1 20.8 22.7 104.0 142.0 398.0 398.0 398.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
New Jersey 12 48.6 12.6 71.3 43.8 0.901 13.1 20.5 22.7 79.9 106.0 142.0 142.0 142.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page


New Mexico State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
New Mexico 203 16.3 0.4 17.0 6.4 0.390 1.1 12.4 15.8 19.3 24.4 26.9 39.1 43.9

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
New Mexico 200 15.9 0.4 16.6 5.6 0.353 1.1 12.3 15.8 18.9 24.1 26.0 29.7 30.3

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page


New York State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
New York 72 43.0 5.4 52.0 45.4 1.055 10.2 20.6 28.6 45.4 69.4 98.1 276.0 276.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
New York 70 36.4 2.7 41.0 22.9 0.628 10.2 20.4 27.8 43.8 68.6 90.9 112.0 112.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page


North Carolina State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
North Carolina 83 21.3 1.6 23.9 14.2 0.665 1.5 13.1 19.4 26.2 32.4 37.3 114.0 114.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
North Carolina 82 20.2 1.1 22.0 9.8 0.487 1.5 13.1 19.4 24.8 32.1 36.6 50.9 50.9

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page


North Dakota State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
North Dakota 118 13.6 0.2 13.9 2.4 0.177 8.6 12.0 13.3 14.7 16.0 18.0 22.2 25.1

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
North Dakota 116 13.4 0.2 13.7 2.0 0.150 8.6 12.0 13.3 14.7 15.6 17.8 18.7 18.9

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page


Ohio State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Ohio 68 33.9 2.0 37.3 16.9 0.498 16.6 25.7 30.0 37.5 47.4 49.6 148.0 148.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Ohio 67 32.2 1.2 34.1 9.4 0.293 16.6 25.6 29.8 37.5 43.9 48.9 75.0 75.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page


Oklahoma State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Oklahoma 112 17.1 1.1 18.9 12.1 0.708 5.3 11.5 13.7 18.4 24.1 41.1 47.6 109.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Oklahoma 111 16.2 0.8 17.5 8.3 0.514 5.3 11.4 13.7 18.2 23.6 40.7 46.4 47.6

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page


Oregon State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Oregon 152 15.5 0.9 17.1 11.6 0.749 2.7 10.6 13.5 16.9 23.0 26.9 65.1 126.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Oregon 150 14.4 0.5 15.3 6.1 0.421 2.7 10.6 13.4 16.8 22.1 24.9 34.4 44.7

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page


Pennsylvania State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Pennsylvania 75 60.2 5.3 68.9 45.6 0.758 14.7 31.8 46.4 69.3 118.0 153.0 261.0 261.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Pennsylvania 73 55.0 3.9 61.4 33.2 0.605 14.7 31.8 46.1 66.5 105.0 132.0 161.0 161.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page


Rhode Island State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Rhode Island 1 44.4 - - - - 44.4 44.4 44.4 44.4 44.4 44.4 44.4 44.4

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Rhode Island Insufficient sample size

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Charts

 Insufficient sample size 

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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South Carolina State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
South Carolina 50 15.9 2.0 19.2 13.9 0.870 4.0 7.5 11.9 21.8 29.6 33.4 89.4 89.4

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
South Carolina 49 14.4 1.3 16.6 9.0 0.625 4.0 7.5 11.7 21.2 28.2 33.0 34.8 34.8

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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South Dakota State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
South Dakota 120 17.3 0.3 17.8 3.6 0.207 10.7 14.9 17.1 19.2 22.1 23.2 28.0 32.9

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
South Dakota 119 17.2 0.3 17.7 3.3 0.192 10.7 14.8 17.0 19.1 22.0 23.1 24.3 28.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Tennessee State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Tennessee 66 25.3 2.1 28.7 16.7 0.662 11.5 18.8 21.5 27.5 33.7 42.5 138.0 138.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Tennessee 65 23.5 1.1 25.4 9.1 0.386 11.5 18.8 21.5 26.8 31.4 38.2 70.5 70.5

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Texas State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Texas 431 16.1 0.6 17.0 11.5 0.715 3.1 10.7 14.2 18.7 23.3 27.8 69.4 142.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Texas 425 15.0 0.3 15.5 6.1 0.406 3.1 10.6 14.1 18.3 23.0 25.7 36.5 40.3

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Utah State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Utah 131 18.7 1.2 20.6 13.4 0.716 0.9 13.0 14.9 22.3 28.9 35.7 66.1 133.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Utah 129 17.4 0.7 18.5 7.8 0.445 0.9 13.0 14.8 21.5 28.3 33.8 44.2 46.1

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Vermont State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Vermont 15 36.6 4.8 45.0 18.4 0.502 11.8 25.3 31.7 53.2 64.0 68.6 68.6 68.6

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Vermont 15 36.6 4.8 45.0 18.4 0.502 11.8 25.3 31.7 53.2 64.0 68.6 68.6 68.6

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Virginia State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Virginia 66 29.0 2.1 32.5 17.0 0.587 9.8 17.0 25.0 35.2 51.9 56.8 87.3 87.3

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Virginia 64 27.2 1.8 30.2 14.0 0.515 9.8 16.9 24.2 34.6 47.5 53.3 75.3 75.3

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Washington State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Washington 109 48.9 22.8 86.7 238.2 4.874 6.1 12.1 15.5 22.2 42.1 84.1 513.0 2450.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Washington 108 26.6 5.2 35.2 53.8 2.019 6.1 12.0 15.5 22.1 40.6 63.3 219.0 513.0

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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West Virginia State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
West Virginia 39 31.4 1.6 34.1 10.1 0.321 14.1 27.6 31.3 36.5 42.2 53.5 61.2 61.2

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
West Virginia 39 31.4 1.6 34.1 10.1 0.321 14.1 27.6 31.3 36.5 42.2 53.5 61.2 61.2

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Wisconsin State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Wisconsin 88 19.3 1.8 22.4 17.0 0.879 3.9 12.5 16.4 21.7 27.4 34.2 154.0 154.0

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Wisconsin 87 17.8 1.0 19.4 8.9 0.501 3.9 12.3 16.4 21.7 26.1 30.1 67.2 67.2

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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Wyoming State Data

Tables

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (All Data)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Wyoming 161 18.9 0.4 19.6 5.1 0.269 4.3 15.7 18.1 20.7 25.0 28.8 38.0 38.6

Geogenic Soil Lead Concentrations (mg/kg): 2007-2010 (Outliers Excluded)

Location
Number of
Samples

Mean

Std Error

95 UCL

Std Dev
Coeff of
Variation

Min

Q1

Median

Q3

90th

95th

99th

Max
Wyoming 158 18.5 0.4 19.1 4.4 0.240 4.3 15.6 18.0 20.4 23.9 26.5 33.1 33.5

About These Tables:
These tables show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

Top of page

Charts

Normal Percentiles


Lognormal Percentiles

About These Charts:
These charts show the overall occurrence of lead in surface samples as described by USGS.

Sources of These Data:
The U.S. Geological Survey provided the soil sampling data. The data display was prepared by U.S. Environmental Protection Agency. Revision Date:

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