Lead Human Exposure and Health Risk Assessments 

and Ecological Risk Assessment for Selected Areas 

Pilot Phase 

EXTERNAL REVIEW DRAFT APPENDICES 

December 2006 

Prepared for: 

Office of Air Quality Planning and Standards 

U.S. Environmental Protection Agency 

Research Triangle Park, NC 

Prepared by: 

ICF International 

Research Triangle Park, NC 

Work Funded Through: 

Contract 68-D01-052, Work Assignment IV-5; and 

Contract EP-D-06-115, Work Assignment 0-4 

Zachary Pekar, Work Assignment Manager 

Nancy Riley, Project Officer

ICF International i DRAFT – December 2006 

DISCLAIMER 

This report is being furnished to the U.S. Environmental Protection Agency (EPA) by ICF 

International in partial fulfillment of Contract No. EP-D-06-115, Work Assignment No. 0-4. 

Any opinions, findings, conclusions, or recommendations are those of the authors and do not 

necessarily reflect the views of the EPA or ICF International. This document is being circulated 

to obtain review and comment from the Clean Air Scientific Advisory Committee (CASAC) and 

the general public. Comments on this document should be addressed to Zachary Pekar, U.S. 

Environmental Protection Agency, Office of Air Quality Planning and Standards, C504-06, 

Research Triangle Park, North Carolina 27711 (email: pekar.zachary@epa.gov). 

ICF International ii DRAFT – December 2006 

1 TABLE OF CONTENTS 

2 

3 Appendix A - Measurement Data Summaries for the 

4 Primary and Secondary Pb Smelters................................................................................... A-1 

5 

6 Appendix B - Emissions and Modeling Parameters for the Primary Pb Smelter ....................... B-1 

7 

8 Appendix C - Emissions and Modeling Parameters for the Secondary Pb Smelter ................... C-1 

9 

10 Appendix D - Supplemental Information for the Near Roadway Urban Case Study................. D-1 

11 D.1 Demographic Data .......................................................................................................... D-2 

12 D.2 Air Monitoring Data ....................................................................................................... D-2 

13 D.3 Soil Measurements..........................................................................................................D-4 

14 D.4 Modeled Indoor Dust Concentrations............................................................................. D-8 

15 

16 Appendix E - Summary Data for the Ecologically Vulnerable Case Study ............................... E-1 

17 E.1 Air Deposition Inputs...................................................................................................... E-2 

18 E.2 Soil .................................................................................................................................. E-2 

19 E.3 Surface Water.................................................................................................................. E-5 

20 

21 Appendix F - Primary Pb Smelter Case Study Media Concentrations ........................................F-1 

22 F.1 Primary Lead Smelter Modeled Pb Concentrations for Use in the Human 

23 Exposure and Health Risk Assessments .......................................................................F-2 

24 F.2 Primary Pb Smelter Measured Pb Concentrations for Use in the Ecological 

25 Risk Assessment .........................................................................................................F-74 

26 F.3 Statistical Modeling for Estimating Pb Concentrations in House Dust for the 

27 Primary Pb Smelter.....................................................................................................F-81

28 F.3.1 Purpose.....................................................................................................................F-81 

29 F.3.2 Overview of Methods ..............................................................................................F-81 

30 F.3.3 Data Sources ............................................................................................................F-81 

31 F.3.4 Data Manipulation ...................................................................................................F-88 

32 F.3.4.1 Data Set Based on Spatial-Temporal "Windows" ..........................................F-88 

33 F.3.4.2 Data Set Based on House Dust Sampling Locations ......................................F-89 

34 F.3.5 Results of the Statistical Analysis............................................................................F-89 

35 F.3.5.1 Exploratory Analysis ......................................................................................F-89 

36 F.3.5.2 Regression Modeling ......................................................................................F-91 

37 F.3.5.3 Comparison of Predicted to Observed Dust Pb Concentrations at 

38 Primary Pb Smelter......................................................................................F-93 

39 F.3.6 Primary Pb Smelter: Selection of the House Dust Modeling Approach..................F-95 

40 

41 Appendix G - Secondary Pb Smelter Case Study Media Concentrations .................................. G-1 

42 

43 Appendix H - Data Supporting National-Scale Surface Water Ecological Risk 

44 Screening Assessment.........................................................................................................H-1 

45 H.1 Instructions for Downloading Data from the NAWQA Database.................................. H-2 

46 H.2 Dissolved Pb Measurements........................................................................................... H-5 
ICF International iii DRAFT – December 2006 

1 H.3 Characteristics of Sampling Locations where Dissolved Pb Concentrations 

2 Exceed EPA Ambient Water Quality Criteria for the Protection of Aquatic 

3 Life and Their Uses.................................................................................................... H-17

4 

5 Appendix I - Input Parameter Values Used in the Blood Pb Modeling........................................I-1 

6 I.1 IEUBK Model...................................................................................................................I-2 

7 I.2 Leggett Model...................................................................................................................I-6 

8 

9 Appendix J - Detailed Human Health Risk Results..................................................................... J-1 

10 

11 Appendix K - Adaptation of the Lanphear et al. (1998) Model for Estimating 

12 Blood Pb Levels in the Pilot Phase Assessment ................................................................. K-1 

13 K.1 Development of a House Dust Pb Concentration - Dust Lead Loading 

14 Regression Model ........................................................................................................ K-2

15 K.2 Estimation of Equivalent House Dust Pb Concentrations and a Bivariate 

16 Blood Pb Model ........................................................................................................... K-3 

17 

18 Appendix L - Development of Pb Soil Screening Values .......................................................... L-1 

19 L.1 Purpose............................................................................................................................ L-2 

20 L.2 Superfund Eco-SSLs....................................................................................................... L-3 

21 L.2.1 Overview of Eco-SSLs ............................................................................................. L-3 

22 L.2.2 Derivation of Eco-SSLs for Birds and Mammals..................................................... L-3 

23 L.3 Utility of the Pb Eco-SSLs for the Nationwide Pb NAAQS Review ............................. L-6 

24 L.4 Development of SSVs for Use in the Pb NAAQS Review............................................. L-7 

25 L.4.1 Evaluation of Eco-SSL Equation Parameter Values for Applicability to the 

26 Pb NAAQS Review .............................................................................................. L-7 

27 L.4.1.1 Food Ingestion Rate ......................................................................................... L-8 

28 L.4.1.2 Soil Ingestion Rate......................................................................................... L-10 

29 L.4.1.3 Diet Composition........................................................................................... L-11 

30 L.4.1.4 Earthworm Accumulation of Pb from Soils................................................... L-12 

31 L.4.1.5 Arthropod Accumulation of Pb from Soils.................................................... L-13 

32 L.4.1.6 Bioavailability of Pb in Soil and in Diet........................................................ L-14 

33 L.4.1.7 Toxicity Reference Value (TRC)................................................................... L-16 

34 L.4.2 Calculation of SSVs for Pb for Use in the Pb NAAQS Review............................. L-16 

35 

36 Appendix M - Sediment Screening Levels ................................................................................ M-1 

37 M.1 Canadian Sediment Quality Guidelines......................................................................... M-2 

38 M.2 Consensus Approach...................................................................................................... M-2

39 

40 

41 

42 

43 

44 

45 
ICF International iv DRAFT – December 2006 

1 LIST OF EXHIBITS 

2 

3 Exhibit Page

4 

5 A-1 Air Monitoring Locations Around the Primary Pb Smelter............................................ A-2 

6 

7 A-2 High-Volume Air Monitoring Results for Pb - Primary Pb Smelter .............................. A-3 

8 

9 A-3 Average Annual Pb Concentrations from AirData Monitors Located 

10 Around the Primary Pb Smelter........................................................................ A-12 

11 

12 A-4 Pre-Excavation Soil Sampling Results for Pb - Primary Pb Smelter............................ A-13 

13 

14 A-5 Post-Excavation Soil Sampling Results for Pb - Primary Pb Smelter.......................... A-31 

15 

16 A-6 Recontamination Soil Sampling Results for Pb - Primary Pb Smelter......................... A-37 

17 

18 A-7 Average Soil Pre-Excavation, Post-Excavation, and Recontamination Pb Results 

19 for 31 Residential Locations within One Mile of the Primary Pb Smelter....... A-46 

20 

21 A-8 Indoor Dust/Wipe Sample Results for Pb - Primary Pb Smelter.................................. A-47 

22 

23 A-9 Soil and Air Deposition Monitoring Locations Around the Primary Pb Smelter......... A-50 

24 

25 A-10 Soil Deposition Monitoring Results for Pb - Primary Pb Smelter................................ A-51 

26 

27 A-11 Air Deposition Monitoring Results for Pb - Primary Pb Smelter................................. A-55 

28 

29 A-12 Air Monitoring Locations Around the Secondary Pb Smelter...................................... A-58 

30 

31 A-13 Average Annual Pb Concentrations from AirData Monitors Located 

32 Around the Secondary Pb Smelter.................................................................... A-59 

33 

34 B-1 Emission Release Parameters and Annual Average Emission 

35 Rates for Point Sources. .................................................................................... .B-2 

36 

37 B-2 Emission Release Parameters and Annual Average Emission 

38 Rates for Volume Sources .................................................................................. B-3 

39 

40 B-3 Emission Release Parameters and Annual Average Emission 

41 Rates for Area Sources ....................................................................................... B-4 

42 

43 B-4 Particle Size Distribution Inputs for Point Sources ........................................................ B-6 

44 

45 B-5 Particle Size Distribution Inputs for Volume Sources.................................................... B-8 

46 
ICF International v DRAFT – December 2006 

1 B-6 Particle Size Distribution Inputs for Area Sources....................................................... B-10 

2 

3 C-1 Secondary Pb Smelter Emission Release Parameters and Annual 

4 Average Emission Rates ..................................................................................... C-2 

5 

6 C-2 Secondary Pb Smelter Particle Size Distribution Inputs................................................. C-3 

7 

8 D-1 Demographic Information for Roadside Scenario .......................................................... D-2 

9 

10 D-2 Air Monitoring Data for Pb, DRI Site in Houston, Texas .............................................. D-3 

11 

12 D-3 AQS Ambient Pb Measurements for Houston................................................................ D-3 

13 

14 D-4 Average Measured PM10 Pb Concentrations for DRI Monitoring 

15 Locations (Other than Houston).......................................................................... D-3 

16 

17 D-5 Average Annual PM10 Across the United States for 2005 Compared to 

18 PM10 at the Houston DRI Site............................................................................. D-4 

19 

20 D-6 Selected Data - Pb in Surface Soil Near Roadways and Related 

21 Urban Measurements .......................................................................................... D-5 

22 

23 D-7 Near Roadway Urban Case Study: Modeled Indoor Dust Concentrations.................... D-8 

24 

25 E-1 Pb Concentration in Forest Floor Samples Analyzed for Hubbard 

26 Brook Experimental Forest............................................................................................. E-4 

27 

28 F-1 Primary Pb Smelter: Ratios of Exposure Concentrations to Ambient 

29 Air Concentrations from NATA for Study Area .................................................F-3 

30 

31 F-2 Primary Pb Smelter: Current Conditions Scenario Media Concentrations.....................F-4 

32 

33 F-3 Primary Pb Smelter: Current NAAQS Scenario Media Concentrations ......................F-36 

34 

35 F-4 Primary Pb Smelter Air Concentration Modeled Results 

36 Compared to Monitor Values.............................................................................F-72 

37 

38 F-5 Primary Pb Smelter Deposition Modeled Results 

39 Compared to Measured Values..........................................................................F-73 

40 

41 F-6 Soil Sample Clusters Used to Estimate Ecological Receptor Exposure via 

42 Soil and Corresponding Pb Analysis Results (ELM 2005) ...............................F-75 

43 

44 F-7 Joachim Creek Measured Surface Water Dissolved Pb Concentration 

45 Data for Primary Pb Smelter Case Study (ELM 2005)......................................F-76 
ICF International vi DRAFT – December 2006 

1 

2 F-8 Mississippi River Measured Dissolved Pb Surface Water Concentration 

3 Data for Primary Pb Smelter Case Study (ELM 2005)......................................F-77 

4 

5 F-9 Other Surface Water, Drainage Areas and U-Shaped Pond, Measured 

6 Surface Water Dissolved Pb Concentration Data for Primary Pb 

7 Smelter Case Study (ELM 2005).......................................................................F-77 

8 

9 F-10 Joachim Creek Measured Sediment Pb Concentration Data for 

10 Primary Pb Smelter Case Study (ELM 2005)....................................................F-78 

11 

12 F-11 Mississippi River Measured Sediment Pb Concentration Data 

13 for Primary Pb Smelter Case Study (ELM 2005) ..............................................F-79 

14 

15 F-12 Other Surface Water, Drainage Areas and U-Shaped Pond, Measured Sediment Pb 

16 Concentration Data for Primary Pb Smelter Case Study (ELM 2005)..........................F-80 

17 

18 F-13 Primary Pb Smelter: Summary of Pb Concentrations in Residential Soil and 

19 House and Road Dust.........................................................................................F-82 

20 

21 F-14 Primary Pb Smelter: Modeled Indoor Dust Concentrations .........................................F-83 

22 

23 F-15 Primary Pb Smelter: Relationship Between House Dust Pb Concentrations and 

24 Distance from Main Stack .................................................................................F-90 

25 

26 F-16 Primary Pb Smelter: Relationship Between Road Dust Pb Concentrations and 

27 Nearby House Pb Dust Concentrations..............................................................F-91 

28 

29 F-17 Indoor Dust Regression Models Tested and Summary of Regression Analysis 

30 Results for the “Windows” Data Set..................................................................F-92 

31 

32 F-18 Summary of Regression Analysis Results for the “House” Data Set ............................F-93 

33 

34 F-19 Comparison of Three Best “Windows” Models with EPA AGG (Air+Soil) 

35 Model and “Windows” Data..............................................................................F-94 

36 

37 F-20 Comparison of Best-Fitting “House” Models with the EPA AGG (Air+Soil) 

38 Model and the “Windows” House Dust Data ....................................................F-95 

39 

40 F-21 Ratio of House Dust Concentrations Predicted by the H6 and AGG (Air+Soil) 

41 Models versus Distance from the Main Stack for the Primary Pb Smelter 

42 Case Study Census Block Centroids..................................................................F-96 

43 

44 G-1 Secondary Pb Smelter: Ratios of Exposure Concentrations to Ambient Air 

45 Concentrations from NATA for Study Area....................................................... G-2 

46 
ICF International vii DRAFT – December 2006 

1 G-2 Secondary Pb Smelter: Current Conditions Scenario Media Concentrations................. G-3 

2 

3 G-3 Secondary Pb Smelter: Modeled Indoor Dust Concentrations .................................... G-17 

4 

5 G-4 Input Parameters for Secondary Pb Smelting Facility Soil Calculations ..................... G-23 

6 

7 H-1 USGS NAWQA Study Units and Sampling Stations for which 

8 Dissolved Pb was Measured ............................................................................... H-3 

9 

10 H-2 Dissolved Pb Measurements Exceeding 1.2 μg/L at NAWQA Sampling 

11 Stations Between 1994 and 2004 for First 25 Study Units 

12 (1.2 μg/L = CCC at a Water Hardness of 50 mg/L as CaCO3)........................... H-6 

13 

14 H-3 Dissolved Pb Measurements Exceeding the CCC at NAWQA Sampling 

15 Stations with Soft Water (Hardness < 50 mg/L as CaCO3) 

16 Between 1994 and 2004 for First 25 Study Units............................................. H-10 

17 

18 H-4 Dissolved Pb Measurements Exceeding 1.2 μg/L at NAWQA Sampling 

19 Stations Between 1994 and 2004 for Remaining Study Units 

20 (1.2 μg/L = CCC at a Water Hardness of 50 mg/L as CaCO3)......................... H-12 

21 

22 H-5 Dissolved Pb Measurements Exceeding CCC at NAWQA Sampling 

23 Stations with Soft Water (hardness < 50 mg/L as CaCO3) between 

24 1994 and 2004 for Remaining Study Units....................................................... H-16 

25 

26 H-6 Station 7050500 in Arkansas ........................................................................................ H-18 

27 

28 H-7 Station 7018100 in Missouri......................................................................................... H-19 

29 

30 H-8 Station 8331000 in New Mexico .................................................................................. H-20 

31 

32 H-9 Station 1112900 in Rhode Island.................................................................................. H-21 

33 

34 H-10 Station 12422500 in Washington State......................................................................... H-23 

35 

36 H-11 Station 600715152572800 in Alaska............................................................................ H-25 

37 

38 H-12 Station 16212700 in Hawaii.......................................................................................... H-26 

39 

40 H-13 Station 12422000 in Washington.................................................................................. H-27 

41 

42 H-14 Station 12419000 in Idaho............................................................................................ H-28 

43 

44 H-15 Station 12392155 in Idaho............................................................................................ H-30 

45 

46 H-16 Station 1127000 in Connecticut.................................................................................... H-32 
ICF International viii DRAFT – December 2006 

1 

2 H-17 Station 1124000 in Connecticut.................................................................................... H-34 

3 

4 H-18 Station 1119375 in Connecticut.................................................................................... H-36 

5 

6 H-19 Station 385240106583600 in Colorado ........................................................................ H-38 

7 

8 H-20 Station 404847111240501 in Utah ............................................................................... H-39 

9 

10 I-1 Input Parameter Values for the IEUBK Model.................................................................I-2 

11 

12 I-2 Example Leggett Model Exposure Parameters and Intake/Uptake Factors......................I-6 

13 

14 J-1 Summary of Projected Blood Pb Distributions, IQ Distributions, and 

15 Exposure Pathway Contributions to Total Pb Uptake for the 

16 Primary Pb Smelter Case Study, Current Conditions Scenario ........................... J-2

17 

18 J-2 Summary of Projected Blood Pb Distributions, IQ Distributions, 

19 and Exposure Pathway Contributions to Total Pb Uptake for the Primary 

20 Pb Smelter Case Study, Current NAAQS Compliance Scenario ........................ J-4

21 

22 J-3 Summary of Projected Blood Pb Distributions, IQ Distributions, and 

23 Exposure Pathway Contributions to Total Pb Uptake for the Secondary 

24 Pb Smelter Case Study, MPE (Modeled) Soil Concentrations............................ J-6 

25 

26 J-4 Summary of Projected Blood Pb Distributions, IQ Distributions, and 

27 Exposure Pathway Contributions to Total Pb Uptake for the Secondary 

28 Pb Smelter Case Study, Hybrid Soil Concentrations........................................... J-8 

29 

30 J-5 Summary of Projected Blood Pb Distributions, IQ Distributions, and 

31 Exposure Pathway Contributions to Total Pb Uptake for the Near 

32 Roadway Urban Case Study .............................................................................. J-10 

33 

34 K-1 Regression Analysis of HUD National Survey House Dust Pb Concentration 

35 Data and Dust Pb Loading Data.......................................................................... K-3 

36 

37 K-2 Predicted Blood Pb Levels Associated with Combinations of Dust Pb Loading, 

38 House Dust Pb Concentrations, and Soil Dust Pb Concentrations 

39 (Adapted from Lanphear et al. 1998, Table 4).................................................... K-4 

40 

41 L-1 Parameter Values used in the Calculation of Avian Eco-SSLs for Pb 

42 (USEPA 2005b) .................................................................................................. L-5 

43 

44 L-2 Parameter Values used in Calculation of the Mammalian Eco-SSLs for Pb 

45 (USEPA 2005b) .................................................................................................. L-6 

46 
ICF International ix DRAFT – December 2006 

1 L-3 Distribution of Soil Pb Concentrations across the Conterminous United States 

2 (Shacklette and Boerngen 1984)......................................................................... L-7 

3 

4 L-4 Estimated Arthropod Pb Concentrations as a Percentage of Estimated Earthworm 

5 Pb Concentrations (mg/kg dry weight) for Same Soil Concentrations............. L-13 

6 

7 L-5 Development of the Woodcock SSV for Lead ............................................................. L-17 
 

 

Appendix A 

Measurement Data Summaries for the 

Primary and Secondary Pb Smelters 
 

 
 Appendix A 

 

1 

2 

3 

4 

5 

6 

7 

8 

9 

10 

11 

12 

13 

14 

15 

Appendix A presents detailed summaries of the measurement data available for the primary and 

secondary Pb smelters. For selected media, sampling location figures are also provided. 

Additional discussion regarding this measurement data is provided in Chapter 3 of the report. 

EPA high-volume and AQS/AirData air monitoring locations around the primary Pb smelter are 

shown in Exhibit A-1. Air monitoring data for these locations are presented in Exhibits A-2 and 

A-3. Exhibits A-4 through A-7 provide soil data results (pre-excavation, post-excavation and 

recontamination sampling) associated with locations around the primary Pb smelter. Indoor dust 

measurement data collected to assess Pb recontamination in select residential areas around the 

primary Pb smelter are provided in Exhibit A-8. Soil and air deposition monitoring locations 

around the primary Pb smelter are shown in Exhibit A-9. Soil and air deposition monitoring 

results for these locations are presented in Exhibits A-10 and A-11, respectively. 

AQS/AirData air monitoring locations around the secondary Pb smelter are shown in Exhibit A12. Air monitoring data for these locations are presented in Exhibit A-13. 

ICF International A-1 DRAFT – December 2006 
Appendix A 

 Exhibit A-1. Air Monitoring Locations Around the Primary Pb Smelter 

ICF International A-2 DRAFT – December 2006 
Appendix A

2001 2002

Date Date Date

100 -- -- 3-Jan-02 0.5 1-Jan-03 0.316

100 -- -- 7-Jan-02 0.52 4-Jan-03 1.26

100 -- -- 10-Jan-02 0.51 7-Jan-03 0.547

100 -- -- 13-Jan-02 4.5 10-Jan-03 0.291

100 -- -- 16-Jan-02 0.97 13-Jan-03 1.03

100 -- -- 19-Jan-02 2.2 16-Jan-03 1.09

100 -- -- 22-Jan-02 2.4 19-Jan-03 0.531

100 -- -- 25-Jan-02 0.75 22-Jan-03 0.095

100 -- -- 28-Jan-02 2 25-Jan-03 0.811

100 -- -- 5-Feb-02 1.5 28-Jan-03 2.28

100 -- -- 8-Feb-02 0.97 31-Jan-03 0.118

100 -- -- 11-Feb-02 0.59 3-Feb-03 0.15

100 -- -- 14-Feb-02 0.33 9-Feb-03 1.29

100 -- -- 18-Feb-02 2.3 12-Feb-03 0.901

100 -- -- 21-Feb-02 0.24 15-Feb-03 0.514

100 -- -- 26-Feb-02 0.23 ND 18-Feb-03 0.406

100 -- -- 1-Mar-02 3.8 21-Feb-03 0.527

100 -- -- 4-Mar-02 0.57 24-Feb-03 0.119

100 -- -- 7-Mar-02 1.7 27-Feb-03 0.05 ND

100 -- -- 11-Mar-02 2.3 2-Mar-03 0.095

100 -- -- 14-Mar-02 1.3 5-Mar-03 0.138

100 -- -- 17-Mar-02 0.78 8-Mar-03 1.63

100 -- -- 20-Mar-02 0.24 ND 11-Mar-03 1.99

100 -- -- 23-Mar-02 0.25 ND 14-Mar-03 1.53

100 -- -- 26-Mar-02 0.41 17-Mar-03 2.86

100 -- -- 29-Mar-02 0.76 20-Mar-03 2.07

100 -- -- 1-Apr-02 0.93 23-Mar-03 0.352

100 -- -- 4-Apr-02 0.24 ND 26-Mar-03 0.58

100 -- -- 7-Apr-02 0.61 29-Mar-03 0.05 ND

100 -- -- 10-Apr-02 4.9 1-Apr-03 0.399

100 -- -- 16-Apr-02 2 4-Apr-03 0.397

100 -- -- 18-Apr-02 3 7-Apr-03 0.238

100 -- -- 22-Apr-02 0.41 10-Apr-03 0.19

100 -- -- 25-Apr-02 0.23 ND 13-Apr-03 1.95

100 -- -- 28-Apr-02 0.25 ND 16-Apr-03 0.376

100 -- -- 1-May-02 2.2 19-Apr-03 5.48

100 -- -- 4-May-02 0.55 22-Apr-03 0.357

100 -- -- 7-May-02 2 25-Apr-03 0.092

100 -- -- 10-May-02 3.58 28-Apr-03 3.37

100 -- -- 13-May-02 0.144 1-May-03 0.309

100 -- -- 16-May-02 0.932 4-May-03 0.715

100 -- -- 19-May-02 0.091 7-May-03 0.59

100 -- -- 22-May-02 2.33 10-May-03 0.437

100 -- -- 25-May-02 0.193 13-May-03 1.4

100 -- -- 29-May-02 1.59 16-May-03 2.08

100 -- -- 31-May-02 0.397 19-May-03 0.493

100 -- -- 3-Jun-02 0.32 22-May-03 0.108

100 -- -- 6-Jun-02 0.359 25-May-03 0.505

100 -- -- 9-Jun-02 0.326 28-May-03 0.242

100 -- -- 12-Jun-02 0.716 31-May-03 0.165

100 -- -- 15-Jun-02 0.141 3-Jun-03 0.21

100 -- -- 18-Jun-02 1.1 6-Jun-03 0.603

Exhibit A-2. High-Volume Air Monitoring Results for Pb - Primary 

Pb Smelter a

Pilot Analysis 

ID

Sampling Dates and Results (μg/m3

) b,c

2003

ICF International A-3 DRAFT – December 2006
Appendix A

2001 2002

Date Date Date

Exhibit A-2. High-Volume Air Monitoring Results for Pb - Primary 

Pb Smelter a

Pilot Analysis 

ID

Sampling Dates and Results (μg/m3

) b,c

2003

100 -- -- 21-Jun-02 1.49 9-Jun-03 0.121

100 -- -- 24-Jun-02 2.17 12-Jun-03 0.627

100 -- -- 27-Jun-02 0.24 15-Jun-03 0.063

100 -- -- 30-Jun-02 0.091 18-Jun-03 1.51

100 -- -- 3-Jul-02 0.861 21-Jun-03 0.216

100 -- -- 6-Jul-02 1.68 24-Jun-03 0.433

100 -- -- 9-Jul-02 0.439 27-Jun-03 0.184

100 -- -- 12-Jul-02 2.92 30-Jun-03 0.803

100 -- -- 15-Jul-02 1.04 6-Jul-03 0.06

100 -- -- 18-Jul-02 1.09 -- --

100 -- -- 22-Jul-02 0.771 -- --

100 -- -- 29-Jul-02 0.553 -- --

100 -- -- 4-Aug-02 0.225 -- --

100 -- -- 7-Aug-02 0.511 -- --

100 -- -- 10-Aug-02 1.28 -- --

100 -- -- 13-Aug-02 0.181 -- --

100 -- -- 16-Aug-02 0.994 -- --

100 -- -- 19-Aug-02 1.27 -- --

100 -- -- 22-Aug-02 0.547 -- --

100 -- -- 25-Aug-02 0.064 -- --

100 -- -- 28-Aug-02 0.204 -- --

100 -- -- 31-Aug-02 0.465 -- --

100 -- -- 3-Sep-02 0.439 -- --

100 -- -- 6-Sep-02 4.11 -- --

100 -- -- 9-Sep-02 1.19 -- --

100 -- -- 12-Sep-02 0.473 -- --

100 -- -- 15-Sep-02 0.088 -- --

100 -- -- 18-Sep-02 0.739 -- --

100 -- -- 21-Sep-02 0.107 -- --

100 -- -- 24-Sep-02 0.223 -- --

100 -- -- 27-Sep-02 0.183 -- --

100 -- -- 30-Sep-02 0.395 -- --

100 -- -- 3-Oct-02 1.57 -- --

100 -- -- 6-Oct-02 0.21 -- --

100 -- -- 9-Oct-02 0.983 -- --

100 13-Oct-01 0.41 12-Oct-02 0.498 -- --

100 16-Oct-01 0.24 15-Oct-02 0.256 -- --

100 18-Oct-01 1.7 18-Oct-02 0.457 -- --

100 23-Oct-01 0.32 21-Oct-02 4.63 -- --

100 26-Oct-01 0.24 ND 24-Oct-02 1.89 -- --

100 29-Oct-01 5 27-Oct-02 1.26 -- --

100 1-Nov-01 1.4 30-Oct-02 0.359 -- --

100 4-Nov-01 0.69 2-Nov-02 0.053 -- --

100 8-Nov-01 0.71 5-Nov-02 0.506 -- --

100 11-Nov-01 3.9 8-Nov-02 0.319 -- --

100 14-Nov-01 2.8 11-Nov-02 0.129 -- --

100 16-Nov-01 1 14-Nov-02 0.627 -- --

100 19-Nov-01 0.45 17-Nov-02 0.485 -- --

100 22-Nov-01 1.1 20-Nov-02 0.765 -- --

100 26-Nov-01 2 23-Nov-02 0.498 -- --

100 28-Nov-01 0.24 ND 26-Nov-02 0.818 -- --

100 1-Dec-01 0.66 29-Nov-02 0.518 -- --

ICF International A-4 DRAFT – December 2006
Appendix A

2001 2002

Date Date Date

Exhibit A-2. High-Volume Air Monitoring Results for Pb - Primary 

Pb Smelter a

Pilot Analysis 

ID

Sampling Dates and Results (μg/m3

) b,c

2003

100 4-Dec-01 4.6 2-Dec-02 0.954 -- --

100 7-Dec-01 2.5 5-Dec-02 0.057 -- --

100 10-Dec-01 2.5 8-Dec-02 0.112 -- --

100 13-Dec-01 0.25 ND 11-Dec-02 2.57 -- --

100 17-Dec-01 0.31 14-Dec-02 0.264 -- --

100 19-Dec-01 0.23 ND 17-Dec-02 1.89 -- --

100 22-Dec-01 0.24 ND 20-Dec-02 0.382 -- --

100 26-Dec-01 0.27 23-Dec-02 0.895 -- --

100 28-Dec-01 1.3 26-Dec-02 0.086 -- --

100 31-Dec-01 0.27 29-Dec-02 1.72 -- --

100 Summary: 2001 2002 2003

101 -- -- 3-Jan-02 0.25 ND -- --

101 -- -- 7-Jan-02 0.25 ND -- --

101 -- -- 10-Jan-02 0.3 -- --

101 -- -- 13-Jan-02 17 -- --

101 -- -- 16-Jan-02 0.35 -- --

101 -- -- 19-Jan-02 0.6 -- --

101 -- -- 22-Jan-02 0.55 -- --

101 -- -- 25-Jan-02 0.24 ND -- --

101 -- -- 28-Jan-02 0.34 -- --

101 -- -- 31-Jan-02 0.24 ND -- --

101 -- -- 5-Feb-02 0.52 -- --

101 -- -- 8-Feb-02 0.3 -- --

101 -- -- 11-Feb-02 0.23 ND -- --

101 -- -- 14-Feb-02 0.27 -- --

101 -- -- 18-Feb-02 0.6 -- --

101 -- -- 21-Feb-02 0.24 ND -- --

101 -- -- 26-Feb-02 0.24 ND -- --

101 -- -- 1-Mar-02 0.65 -- --

101 -- -- 7-Mar-02 1.6 -- --

101 -- -- 11-Mar-02 0.24 ND -- --

101 -- -- 14-Mar-02 1.2 -- --

101 -- -- 17-Mar-02 0.65 -- --

101 -- -- 20-Mar-02 0.46 -- --

101 -- -- 23-Mar-02 0.25 ND -- --

101 -- -- 26-Mar-02 0.24 ND -- --

101 -- -- 29-Mar-02 0.48 -- --

101 -- -- 1-Apr-02 0.26 ND -- --

101 -- -- 4-Apr-02 1.8 -- --

101 -- -- 7-Apr-02 0.26 ND -- --

101 -- -- 10-Apr-02 0.69 -- --

101 -- -- 16-Apr-02 1.8 -- --

101 -- -- 18-Apr-02 0.55 -- --

101 -- -- 25-Apr-02 0.25 ND -- --

101 -- -- 28-Apr-02 0.27 ND -- --

101 -- -- 1-May-02 0.34 -- --

101 -- -- 4-May-02 0.51 -- --

101 -- -- 7-May-02 0.54 -- --

101 -- -- 10-May-02 2.14 -- --

101 -- -- 13-May-02 0.054 -- --

101 -- -- 16-May-02 0.28 -- --

Max = 5 

Avg = 1.3

Max = 4.9 

Avg = 1

Max = 5.5 

Avg = 0.79

ICF International A-5 DRAFT – December 2006
Appendix A

2001 2002

Date Date Date

Exhibit A-2. High-Volume Air Monitoring Results for Pb - Primary 

Pb Smelter a

Pilot Analysis 

ID

Sampling Dates and Results (μg/m3

) b,c

2003

101 -- -- 19-May-02 0.062 -- --

101 -- -- 22-May-02 0.921 -- --

101 -- -- 25-May-02 0.123 -- --

101 -- -- 29-May-02 0.562 -- --

101 -- -- 31-May-02 0.099 -- --

101 -- -- 3-Jun-02 0.677 -- --

101 -- -- 6-Jun-02 0.962 -- --

101 -- -- 9-Jun-02 0.245 -- --

101 -- -- 12-Jun-02 0.085 -- --

101 -- -- 15-Jun-02 0.069 -- --

101 -- -- 18-Jun-02 0.261 -- --

101 -- -- 21-Jun-02 0.375 -- --

101 -- -- 24-Jun-02 0.935 -- --

101 -- -- 27-Jun-02 0.075 -- --

101 -- -- 30-Jun-02 0.05 ND -- --

101 -- -- 3-Jul-02 0.225 -- --

101 -- -- 6-Jul-02 1.11 -- --

101 -- -- 9-Jul-02 1.66 -- --

101 -- -- 12-Jul-02 3.58 -- --

101 -- -- 15-Jul-02 0.655 -- --

101 -- -- 18-Jul-02 0.131 -- --

101 -- -- 22-Jul-02 0.092 -- --

101 -- -- 26-Jul-02 1.36 -- --

101 -- -- 29-Jul-02 0.213 -- --

101 -- -- 1-Aug-02 1.29 -- --

101 -- -- 4-Aug-02 0.22 -- --

101 -- -- 7-Aug-02 9.13 -- --

101 -- -- 10-Aug-02 0.656 -- --

101 -- -- 13-Aug-02 0.05 ND -- --

101 -- -- 16-Aug-02 6.68 -- --

101 -- -- 19-Aug-02 1.69 -- --

101 -- -- 22-Aug-02 0.059 -- --

101 -- -- 25-Aug-02 0.701 -- --

101 -- -- 28-Aug-02 10 -- --

101 -- -- 31-Aug-02 0.378 -- --

101 -- -- 3-Sep-02 1.22 -- --

101 -- -- 6-Sep-02 1.09 -- --

101 13-Oct-01 0.096 -- -- -- --

101 16-Oct-01 0.075 -- -- -- --

101 18-Oct-01 0.18 -- -- -- --

101 23-Oct-01 0.3 ND -- -- -- --

101 26-Oct-01 0.23 ND -- -- -- --

101 29-Oct-01 1.4 -- -- -- --

101 1-Nov-01 0.41 -- -- -- --

101 4-Nov-01 0.23 ND -- -- -- --

101 8-Nov-01 0.26 -- -- -- --

101 11-Nov-01 2.4 -- -- -- --

101 14-Nov-01 1.5 -- -- -- --

101 16-Nov-01 0.24 ND -- -- -- --

101 19-Nov-01 0.24 ND -- -- -- --

101 22-Nov-01 0.38 -- -- -- --

101 26-Nov-01 0.24 ND -- -- -- --

ICF International A-6 DRAFT – December 2006
Appendix A

2001 2002

Date Date Date

Exhibit A-2. High-Volume Air Monitoring Results for Pb - Primary 

Pb Smelter a

Pilot Analysis 

ID

Sampling Dates and Results (μg/m3

) b,c

2003

101 28-Nov-01 1.7 -- -- -- --

101 1-Dec-01 0.62 -- -- -- --

101 4-Dec-01 0.25 ND -- -- -- --

101 7-Dec-01 1.7 -- -- -- --

101 10-Dec-01 1.4 -- -- -- --

101 13-Dec-01 0.3 -- -- -- --

101 17-Dec-01 0.24 ND -- -- -- --

101 19-Dec-01 0.23 ND -- -- -- --

101 22-Dec-01 0.23 ND -- -- -- --

101 26-Dec-01 0.22 ND -- -- -- --

101 28-Dec-01 0.23 ND -- -- -- --

101 31-Dec-01 0.24 ND -- -- -- --

101 Summary: 2001 2002 2003

102 -- -- 03-Jan-02 0.59 01-Jan-03 0.147

102 -- -- 07-Jan-02 0.65 04-Jan-03 0.326

102 -- -- 10-Jan-02 1.4 07-Jan-03 0.63

102 -- -- 13-Jan-02 15 10-Jan-03 0.257

102 -- -- 16-Jan-02 4.4 13-Jan-03 0.388

102 -- -- 19-Jan-02 0.24 ND 16-Jan-03 0.322

102 -- -- 22-Jan-02 25 19-Jan-03 0.986

102 -- -- 28-Jan-02 8.1 22-Jan-03 0.172

102 -- -- 31-Jan-02 0.39 25-Jan-03 0.684

102 -- -- 05-Feb-02 2.7 28-Jan-03 1.52

102 -- -- 08-Feb-02 5 31-Jan-03 2.33

102 -- -- 11-Feb-02 4.4 03-Feb-03 2.69

102 -- -- 14-Feb-02 14 06-Feb-03 0.342

102 -- -- 18-Feb-02 13 09-Feb-03 0.265

102 -- -- 21-Feb-02 0.38 12-Feb-03 0.46

102 -- -- 26-Feb-02 0.25 15-Feb-03 0.05 ND

102 -- -- 01-Mar-02 6.1 18-Feb-03 0.173

102 -- -- 04-Mar-02 4.4 21-Feb-03 0.281

102 -- -- 07-Mar-02 11 24-Feb-03 0.279

102 -- -- 14-Mar-02 17 27-Feb-03 0.056

102 -- -- 17-Mar-02 0.26 ND 02-Mar-03 0.181

102 -- -- 20-Mar-02 0.23 ND 05-Mar-03 0.363

102 -- -- 23-Mar-02 2.4 08-Mar-03 1.85

102 -- -- 26-Mar-02 0.45 11-Mar-03 3.25

102 -- -- 29-Mar-02 0.81 14-Mar-03 0.224

102 -- -- 01-Apr-02 13 17-Mar-03 1.25

102 -- -- 04-Apr-02 0.24 ND 20-Mar-03 0.349

102 -- -- 07-Apr-02 6.4 23-Mar-03 0.504

102 -- -- 10-Apr-02 0.86 26-Mar-03 0.476

102 -- -- 16-Apr-02 11 29-Mar-03 0.107

102 -- -- 18-Apr-02 3.1 01-Apr-03 1.56

102 -- -- 25-Apr-02 1.1 04-Apr-03 4.11

102 -- -- 28-Apr-02 0.25 ND 07-Apr-03 0.184

102 -- -- 01-May-02 0.87 10-Apr-03 0.16

102 -- -- 04-May-02 0.6 13-Apr-03 0.441

102 -- -- 07-May-02 0.98 16-Apr-03 10

102 -- -- 10-May-02 0.551 19-Apr-03 4.33

102 -- -- 13-May-02 0.679 22-Apr-03 0.215

Max = 2.4 

Avg = 0.52

Max = 17

Avg = 1.1 --

ICF International A-7 DRAFT – December 2006
Appendix A

2001 2002

Date Date Date

Exhibit A-2. High-Volume Air Monitoring Results for Pb - Primary 

Pb Smelter a

Pilot Analysis 

ID

Sampling Dates and Results (μg/m3

) b,c

2003

102 -- -- 16-May-02 2.19 28-Apr-03 0.435

102 -- -- 19-May-02 0.148 01-May-03 0.926

102 -- -- 22-May-02 3.84 04-May-03 0.671

102 -- -- 25-May-02 1.72 13-May-03 1.41

102 -- -- 29-May-02 0.645 16-May-03 0.319

102 -- -- 31-May-02 1.26 19-May-03 0.512

102 -- -- 03-Jun-02 2.27 22-May-03 0.11

102 -- -- 06-Jun-02 0.441 25-May-03 0.05 ND

102 -- -- 09-Jun-02 1.96 28-May-03 0.245

102 -- -- 12-Jun-02 0.962 31-May-03 0.274

102 -- -- 15-Jun-02 0.365 03-Jun-03 0.188

102 -- -- 18-Jun-02 2.89 06-Jun-03 0.381

102 -- -- 21-Jun-02 1.12 09-Jun-03 1.35

102 -- -- 24-Jun-02 1.72 12-Jun-03 0.418

102 -- -- 27-Jun-02 1.06 15-Jun-03 0.096

102 -- -- 30-Jun-02 0.273 18-Jun-03 0.406

102 -- -- 03-Jul-02 1.23 21-Jun-03 0.475

102 -- -- 06-Jul-02 0.747 24-Jun-03 2.33

102 -- -- 09-Jul-02 0.739 27-Jun-03 0.469

102 -- -- 12-Jul-02 0.616 30-Jun-03 2.29

102 -- -- 15-Jul-02 0.522 03-Jul-03 0.964

102 -- -- 18-Jul-02 0.967 06-Jul-03 1.15

102 -- -- 22-Jul-02 0.667 -- --

102 -- -- 26-Jul-02 6.48 -- --

102 -- -- 29-Jul-02 0.913 -- --

102 -- -- 01-Aug-02 1.18 -- --

102 -- -- 04-Aug-02 0.663 -- --

102 -- -- 07-Aug-02 0.434 -- --

102 -- -- 10-Aug-02 0.932 -- --

102 -- -- 13-Aug-02 2.86 -- --

102 -- -- 16-Aug-02 4.93 -- --

102 -- -- 19-Aug-02 1.04 -- --

102 -- -- 22-Aug-02 3.8 -- --

102 -- -- 25-Aug-02 0.135 -- --

102 -- -- 28-Aug-02 0.262 -- --

102 -- -- 31-Aug-02 0.205 -- --

102 -- -- 03-Sep-02 0.411 -- --

102 -- -- 06-Sep-02 0.586 -- --

102 -- -- 09-Sep-02 0.614 -- --

102 -- -- 12-Sep-02 0.318 -- --

102 -- -- 21-Sep-02 0.29 -- --

102 -- -- 24-Sep-02 0.261 -- --

102 -- -- 27-Sep-02 0.314 -- --

102 -- -- 30-Sep-02 4.56 -- --

102 -- -- 03-Oct-02 1.53 -- --

102 -- -- 06-Oct-02 0.611 -- --

102 -- -- 09-Oct-02 1.77 -- --

102 -- -- 12-Oct-02 0.412 -- --

102 -- -- 15-Oct-02 0.17 -- --

102 16-Oct-01 0.31 18-Oct-02 2.44 -- --

102 18-Oct-01 16 21-Oct-02 0.759 -- --

102 23-Oct-01 2.5 24-Oct-02 0.215 -- --

ICF International A-8 DRAFT – December 2006
Appendix A

2001 2002

Date Date Date

Exhibit A-2. High-Volume Air Monitoring Results for Pb - Primary 

Pb Smelter a

Pilot Analysis 

ID

Sampling Dates and Results (μg/m3

) b,c

2003

102 26-Oct-01 0.25 27-Oct-02 0.152 -- --

102 29-Oct-01 14 30-Oct-02 0.125 -- --

102 01-Nov-01 18 02-Nov-02 0.069 -- --

102 04-Nov-01 0.48 05-Nov-02 0.099 -- --

102 08-Nov-01 0.83 08-Nov-02 10.7 -- --

102 11-Nov-01 0.58 11-Nov-02 0.15 -- --

102 14-Nov-01 4.2 14-Nov-02 1.07 -- --

102 16-Nov-01 0.99 17-Nov-02 0.108 -- --

102 19-Nov-01 0.4 20-Nov-02 0.708 -- --

102 22-Nov-01 13 23-Nov-02 0.287 -- --

102 26-Nov-01 65 26-Nov-02 0.145 -- --

102 28-Nov-01 0.24 ND 29-Nov-02 0.15 -- --

102 04-Dec-01 7.5 02-Dec-02 0.776 -- --

102 07-Dec-01 0.85 05-Dec-02 0.896 -- --

102 10-Dec-01 1.4 08-Dec-02 0.376 -- --

102 13-Dec-01 0.22 ND 11-Dec-02 0.919 -- --

102 17-Dec-01 0.23 ND 14-Dec-02 0.568 -- --

102 19-Dec-01 0.85 17-Dec-02 2.32 -- --

102 22-Dec-01 5.1 20-Dec-02 0.224 -- --

102 26-Dec-01 0.49 23-Dec-02 0.233 -- --

102 28-Dec-01 0.53 26-Dec-02 0.083 -- --

102 31-Dec-01 0.25 29-Dec-02 5.24 -- --

102 Summary: 2001 2002 2003

103 3-Jan-02 0.92 10-Jan-03 0.402

103 7-Jan-02 0.43 13-Jan-03 0.621

103 10-Jan-02 0.73 16-Jan-03 0.23

103 13-Jan-02 1.3 19-Jan-03 0.155

103 16-Jan-02 1.5 22-Jan-03 0.058

103 19-Jan-02 0.25 ND 25-Jan-03 0.326

103 22-Jan-02 2.1 28-Jan-03 0.864

103 25-Jan-02 0.59 31-Jan-03 0.075

103 28-Jan-02 1.9 3-Feb-03 0.069

103 31-Jan-02 0.46 6-Feb-03 0.283

103 5-Feb-02 1 9-Feb-03 0.566

103 8-Feb-02 0.61 12-Feb-03 0.65

103 11-Feb-02 0.49 15-Feb-03 0.05 ND

103 14-Feb-02 0.38 18-Feb-03 1.22

103 18-Feb-02 1.4 21-Feb-03 0.104

103 21-Feb-02 0.32 24-Feb-03 0.135

103 26-Feb-02 0.24 ND 27-Feb-03 0.05 ND

103 1-Mar-02 6.1 2-Mar-03 0.085

103 4-Mar-02 0.49 5-Mar-03 0.105

103 7-Mar-02 0.94 8-Mar-03 0.377

103 11-Mar-02 1.2 11-Mar-03 0.993

103 14-Mar-02 1.5 14-Mar-03 0.395

103 17-Mar-02 0.25 ND 17-Mar-03 2.2

103 20-Mar-02 0.26 ND 20-Mar-03 0.655

103 23-Mar-02 0.25 ND 23-Mar-03 0.422

103 26-Mar-02 0.3 26-Mar-03 0.421

103 29-Mar-02 2.1 29-Mar-03 0.056

103 1-Apr-02 0.62 1-Apr-03 0.236

Max = 65 

Avg = 6.2

Max = 25 

Avg = 2.4

Max = 10

Avg = 1

ICF International A-9 DRAFT – December 2006
Appendix A

2001 2002

Date Date Date

Exhibit A-2. High-Volume Air Monitoring Results for Pb - Primary 

Pb Smelter a

Pilot Analysis 

ID

Sampling Dates and Results (μg/m3

) b,c

2003

103 4-Apr-02 0.24 ND 4-Apr-03 0.169

103 7-Apr-02 1.4 7-Apr-03 0.205

103 10-Apr-02 3.8 10-Apr-03 0.113

103 16-Apr-02 1.2 13-Apr-03 0.908

103 18-Apr-02 1.7 16-Apr-03 0.218

103 22-Apr-02 1.1 19-Apr-03 2.15

103 25-Apr-02 0.23 ND 22-Apr-03 0.145

103 28-Apr-02 0.25 ND 25-Apr-03 0.093

103 1-May-02 1.8 1-May-03 0.242

103 4-May-02 0.4 7-May-03 0.455

103 7-May-02 0.42 10-May-03 0.369

103 10-May-02 1.43 13-May-03 0.679

103 13-May-02 0.082 16-May-03 0.14

103 22-May-02 1.53 19-May-03 0.383

103 25-May-02 0.232 22-May-03 0.078

103 29-May-02 0.906 25-May-03 0.06

103 31-May-02 0.449 28-May-03 0.164

103 3-Jun-02 0.342 31-May-03 0.166

103 6-Jun-02 0.338 3-Jun-03 0.105

103 9-Jun-02 0.35 6-Jun-03 1.15

103 15-Jun-02 0.204 9-Jun-03 0.126

103 18-Jun-02 0.86 12-Jun-03 0.511

103 21-Jun-02 1.11 15-Jun-03 0.05 ND

103 24-Jun-02 1.06 18-Jun-03 0.907

103 27-Jun-02 0.46 21-Jun-03 0.133

103 30-Jun-02 0.097 24-Jun-03 0.32

103 3-Jul-02 0.68 27-Jun-03 0.098

103 6-Jul-02 0.286 30-Jun-03 0.453

103 9-Jul-02 0.342 3-Jul-03 0.159

103 12-Jul-02 0.276 6-Jul-03 0.051

103 15-Jul-02 0.244 -- --

103 18-Jul-02 0.878 -- --

103 22-Jul-02 0.728 -- --

103 26-Jul-02 0.537 -- --

103 29-Jul-02 0.422 -- --

103 1-Aug-02 2.59 -- --

103 4-Aug-02 0.258 -- --

103 7-Aug-02 0.159 -- --

103 10-Aug-02 0.379 -- --

103 13-Aug-02 0.077 -- --

103 16-Aug-02 0.46 -- --

103 19-Aug-02 0.756 -- --

103 22-Aug-02 0.296 -- --

103 25-Aug-02 0.057 -- --

103 28-Aug-02 0.107 -- --

103 31-Aug-02 0.33 -- --

103 3-Sep-02 0.291 -- --

103 6-Sep-02 1.11 -- --

103 13-Oct-01 0.994 -- -- -- --

103 16-Oct-01 0.56 -- -- -- --

103 18-Oct-01 0.96 -- -- -- --

103 23-Oct-01 0.32 ND -- -- -- --

ICF International A-10 DRAFT – December 2006
Appendix A

2001 2002

Date Date Date

Exhibit A-2. High-Volume Air Monitoring Results for Pb - Primary 

Pb Smelter a

Pilot Analysis 

ID

Sampling Dates and Results (μg/m3

) b,c

2003

103 26-Oct-01 0.33 -- -- -- --

103 29-Oct-01 2.5 -- -- -- --

103 01-Nov-01 0.86 -- -- -- --

103 04-Nov-01 0.25 -- -- -- --

103 08-Nov-01 0.87 -- -- -- --

103 11-Nov-01 0.59 -- -- -- --

103 14-Nov-01 3.6 -- -- -- --

103 16-Nov-01 1 -- -- -- --

103 19-Nov-01 0.35 -- -- -- --

103 22-Nov-01 1.1 -- -- -- --

103 26-Nov-01 2.9 -- -- -- --

103 28-Nov-01 0.23 ND -- -- -- --

103 01-Dec-01 0.85 -- -- -- --

103 04-Dec-01 2.1 -- -- -- --

103 07-Dec-01 1.3 -- -- -- --

103 10-Dec-01 2.3 -- -- -- --

103 13-Dec-01 0.26 -- -- -- --

103 17-Dec-01 0.24 ND -- -- -- --

103 19-Dec-01 0.39 -- -- -- --

103 22-Dec-01 0.25 ND -- -- -- --

103 26-Dec-01 0.4 -- -- -- --

103 Summary: 2001 2002 2003

a

 Data were obtained from EPA Region 7 (2006).

b

 "--" indicates that no sample was collected during that time.

Max = 3.6 

Avg = 1

Max = 6.1 

Avg = 0.8

Max = 2.2

Avg = 0.39

c

 A value qualified with an "ND" represents a non-detect. The value presented is the detection limit. 

For the purpose of calculating averages, one-half the detection limit was used as the value for nondetects.

ICF International A-11 DRAFT – December 2006
Appendix A

2001 2002 2003 2004 2005

290990015 3.18 1.29 1.31 1.37 1.56

290990004 -- -- -- 1.27 0.94

290990005 2.11 0.4 0.308 0.436 0.28

290990011 1.52 0.51 0.414 0.558 0.28

290990016 -- -- -- 0.3 0.20

290990013 0.904 0.240 0.194 0.437 0.20

290990008 0.273 0.070 0.102 0.097 0.14

290990010 0.077 0.070 0.034 0.046 0.06

290990009 0.332 0.050 0.086 0.105 0.07

a

 AirData values are for average annual Pb concentrations in total suspended particulate matter (TSP) and

were obtained from the AirData website monitor reports. In some cases, there was more than one monitor 

at a site.

b

 "--" indicates that data was not available.

Average Monitored Pb Concentrations (μg/m3)

a,b

Monitor ID

Located Around the Primary Pb Smelter

Exhibit A-3. Average Annual Pb Concentrations from AirData Monitors

ICF International A-12 DRAFT – December 2006
Appendix A

Exhibit A-4. Pre-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

140 03-Oct-01 920 853 460 1060 823

141 03-Oct-01 1500 724 1470 818 1128

142 03-Oct-01 377 602 762 731 618

143 03-Oct-01 757 1390 1200 563 978

144 03-Oct-01 1680 1030 685 719 1029

145 03-Oct-01 2770 2210 1070 783 1708

146 03-Oct-01 1280 809 433 731 813

147 03-Oct-01 2640 1530 596 674 1360

148 03-Oct-01 670 1360 13100 465 3899

149 03-Oct-01 2820 2080 1540 1400 1960

150 03-Oct-01 403 1330 350 748 708

151 03-Oct-01 783 913 736 1240 918

152 04-Oct-01 803 1140 660 696 825

153 04-Oct-01 270 5530 1140 486 1857

154 04-Oct-01 4220 2160 1440 1360 2295

155 04-Oct-01 1260 873 1360 612 1026

156 04-Oct-01 1260 1450 636 2190 1384

157 05-Oct-01 1330 1550 1460 1630 1493

158 04-Oct-01 3100 9390 756 781 3507

159 04-Oct-01 1660 5780 428 440 2077

160 04-Oct-01 1150 853 927 269 800

161 04-Oct-01 1720 1790 1420 846 1444

162 04-Oct-01 1670 1800 526 2320 1579

163 04-Oct-01 13600 4870 2190 8450 7278

164 04-Oct-01 6900 10700 8360 5270 7808

165 04-Oct-01 6640 6500 7760 6200 6775

166 05-Oct-01 16600 11800 5970 8860 10808

167 05-Oct-01 28000 32100 8490 14200 20698

168 05-Oct-01 16700 18600 10400 2130 11958

169 05-Oct-01 12800 5640 4610 15800 9713

170 05-Oct-01 8670 4140 3950 4060 5205

171 10-Oct-01 1400 2120 461 1470 1363

172 10-Oct-01 851 1530 1270 728 1095

173 10-Oct-01 1160 1090 751 1570 1143

174 10-Oct-01 1270 1260 2530 1320 1595

175 10-Oct-01 2750 2580 5200 1260 2948

176 10-Oct-01 1720 2030 1620 515 1471

177 10-Oct-01 2760 3370 2190 7510 3958

178 08-Oct-01 4950 3690 1040 649 2582

179 08-Oct-01 1010 1800 1270 1250 1333

180 08-Oct-01 1330 2010 1220 899 1365

181 08-Oct-01 1070 2260 1160 976 1367

182 08-Oct-01 22500 5110 886 302 7200

183 08-Oct-01 1980 3020 1210 1050 1815

184 08-Oct-01 5830 4370 1510 1520 3308

185 09-Oct-01 2230 1670 796 936 1408

186 09-Oct-01 1020 1220 652 366 815

187 09-Oct-01 833 898 795 1050 894

188 09-Oct-01 2350 1820 1100 886 1539

189 09-Oct-01 1110 1070 1680 849 1177

190 09-Oct-01 930 818 922 910 895

191 09-Oct-01 1730 2180 24000 3600 7878

Pilot 

Analysis ID Sampling Date

Property Average 

(mg/kg) d

ICF International A-13 DRAFT – December 2006
Appendix A

Exhibit A-4. Pre-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot 

Analysis ID Sampling Date

Property Average 

(mg/kg) d

192 09-Oct-01 3150 1230 710 1180 1568

193 10-Oct-01 5740 1590 14600 11200 8283

194 10-Oct-01 3670 998 1360 3520 2387

195 10-Oct-01 7240 1820 906 1880 2962

196 10-Oct-01 1180 2310 1550 979 1505

197 11-Oct-01 2210 5630 2430 1870 3035

198 11-Oct-01 857 850 423 112 561

199 11-Oct-01 648 330 310 117 351

200 11-Oct-01 559 156 710 296 430

201 11-Oct-01 373 86 95 212 192

202 12-Oct-01 211 160 389 203 241

203 12-Oct-01 870 579 1090 -- 846

204 12-Oct-01 183 308 174 184 212

205 11-Oct-01 326 157 251 66 200

206 11-Oct-01 234 236 201 220 223

207 09-Oct-01 1040 1140 1150 826 1039

208 10-Oct-01 3050 2150 1890 1800 2223

209 10-Oct-01 1510 2030 1390 1100 1508

210 10-Oct-01 7490 546 1870 3830 3434

211 10-Oct-01 2400 2200 952 642 1549

212 10-Oct-01 163 273 341 642 355

213 10-Oct-01 8500 1640 3340 1020 3625

214 11-Oct-01 2100 2010 1150 1010 1568

215 11-Oct-01 1320 1020 1160 1420 1230

216 11-Oct-01 948 1070 1010 962 998

217 10-Oct-01 541 754 826 668 697

218 11-Oct-01 1320 671 588 562 785

219 11-Oct-01 685 858 1150 773 867

220 11-Oct-01 1050 1770 714 1020 1139

221 02-Aug-04 395 470 202.7 -- 356

222 11-Oct-01 1340 676 469 1610 1024

223 11-Oct-01 424 555 474 199 413

224 11-Oct-01 772 504 459 581 579

225 11-Oct-01 1170 592 511 651 731

226 11-Oct-01 323 381 357 606 417

227 11-Oct-01 475 526 124 612 434

228 11-Oct-01 324 680 343 479 457

229 11-Oct-01 374 511 307 5430 1656

230 11-Oct-01 333 423 492 148 349

231 09-Oct-01 501 706 889 873 742

232 09-Oct-01 1580 1870 1060 1220 1433

233 09-Oct-01 1640 3810 900 686 1759

234 09-Oct-01 1100 2350 721 600 1193

235 09-Oct-01 1200 1480 636 599 979

236 12-Oct-01 1420 614 731 1280 1011

237 09-Oct-01 1250 792 1810 981 1208

238 11-Oct-01 -- 492 1300 3420 1737

239 09-Oct-01 9820 2440 1630 2730 4155

240 09-Oct-01 2320 3070 4230 1460 2770

241 12-Oct-01 691 4130 392 634 1462

242 12-Oct-01 495 860 525 460 585

243 12-Oct-01 313 354 539 638 461

ICF International A-14 DRAFT – December 2006
Appendix A

Exhibit A-4. Pre-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot 

Analysis ID Sampling Date

Property Average 

(mg/kg) d

244 12-Oct-01 671 547 530 731 620

245 12-Oct-01 586 785 595 700 667

246 12-Oct-01 703 801 468 760 683

247 12-Oct-01 498 813 537 484 583

248 12-Oct-01 431 368 670 524 498

249 12-Oct-01 279 568 1020 1690 889

250 12-Oct-02 914 864 830 1200 952

251 12-Oct-01 4130 2980 2540 857 2627

252 12-Oct-01 2330 1160 1360 1430 1570

253 11-Oct-01 413 1180 2140 964 1174

254 11-Oct-01 1010 1700 1100 1090 1225

255 11-Oct-01 756 890 1360 1290 1074

256 11-Oct-01 2090 2480 1130 1800 1875

257 09-Oct-01 967 1400 993 933 1073

258 11-Oct-01 1680 1420 1430 1660 1548

259 11-Oct-01 1290 3420 1670 4400 2695

260 11-Oct-01 1200 1460 1470 807 1234

261 11-Oct-01 934 1550 1730 1830 1511

262 11-Oct-01 1990 1980 1040 1280 1573

263 09-Oct-01 1890 1160 1220 1430 1425

264 11-Oct-01 1650 2220 1360 1300 1633

265 09-Oct-01 1090 1010 1060 885 1011

266 11-Oct-01 2390 2460 1210 1850 1978

267 11-Oct-01 1440 1770 1230 1930 1593

268 11-Oct-01 1040 1080 1220 1040 1095

269 11-Oct-01 1230 981 1050 1160 1105

270 11-Oct-01 4270 909 917 1030 1782

271 11-Oct-01 1360 1060 897 709 1007

272 11-Oct-01 612 2060 658 687 1004

273 09-Oct-01 315 340 630 232 379

274 09-Oct-01 703 719 520 664 652

275 09-Oct-01 694 731 660 393 620

276 09-Oct-01 254 443 136 216 262

277 09-Oct-01 868 797 349 522 634

278 09-Oct-01 245 204 59 48 139

279 10-Oct-01 1230 1330 982 822 1091

280 10-Oct-01 21100 893 475 441 5727

281 08-Oct-01 1120 1910 1090 957 1269

282 08-Oct-01 7650 6940 3380 4920 5723

283 08-Oct-01 4400 3060 2250 2010 2930

284 08-Oct-01 4690 6760 3270 4850 4893

285 08-Oct-01 4690 6760 3270 4850 4893

286 08-Oct-01 8380 8590 6850 6870 7673

287 08-Oct-01 6020 5650 2420 3580 4418

288 08-Oct-01 19900 20500 9766 9020 14797

289 08-Oct-01 1880 602 950 596 1007

290 08-Oct-01 887 636 2220 1750 1373

291 08-Oct-01 662 398 538 1240 710

292 08-Oct-01 2510 1510 3510 2530 2515

293 08-Oct-01 436 698 682 528 586

294 08-Oct-01 189 330 534 409 366

295 10-Oct-01 1130 3180 1580 1070 1740

ICF International A-15 DRAFT – December 2006
Appendix A

Exhibit A-4. Pre-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot 

Analysis ID Sampling Date

Property Average 

(mg/kg) d

296 08-Oct-01 3100 3180 2240 1680 2550

297 08-Oct-01 1630 1650 1940 1810 1758

298 08-Oct-01 993 1080 3700 2010 1946

299 10-Oct-01 129 7280 2880 2160 3112

300 10-Oct-01 688 1190 1670 1800 1337

301 09-Oct-01 4130 6070 1220 989 3102

302 10-Oct-01 223 13000 5320 2230 5193

303 09-Oct-01 1220 1120 180 640 790

304 09-Oct-01 500 667 381 203 438

305 09-Oct-01 569 506 650 630 589

306 09-Oct-01 818 664 917 1170 892

307 10-Oct-01 498 465 492 744 550

308 10-Oct-01 954 1360 1050 695 1015

309 10-Oct-01 824 581 529 580 629

310 09-Oct-01 648 714 809 838 752

311 09-Oct-01 977 875 808 926 897

312 09-Oct-01 657 728 593 619 649

313 10-Oct-01 890 720 612 607 707

314 10-Oct-01 11200 1110 177 159 3162

315 10-Oct-01 590 858 393 375 554

316 10-Oct-01 825 957 794 854 858

317 10-Oct-01 658 436 533 503 533

318 10-Oct-01 509 578 484 1470 760

319 10-Oct-01 1100 1540 1320 397 1089

320 10-Oct-01 827 962 -- -- 895

321 10-Oct-01 1200 1040 1160 2790 1548

322 10-Oct-01 2570 3400 1590 2190 2438

323 10-Oct-01 814 720 1320 1220 1019

324 10-Oct-01 2130 2490 2650 1810 2270

325 02-Oct-01 2970 2470 1300 916 1914

326 08-Oct-01 20700 10600 8880 2590 10693

327 08-Oct-01 6490 8670 2650 3930 5435

328 08-Oct-01 8080 6010 3470 2990 5138

329 08-Oct-01 5160 2510 996 1040 2427

330 09-Oct-01 1040 1900 1330 2040 1578

331 12-Oct-01 1800 1480 1470 1400 1538

332 12-Oct-01 1530 1720 594 1810 1414

333 12-Oct-01 1150 1620 1730 1540 1510

334 12-Oct-01 831 619 1360 1210 1005

335 12-Oct-01 1630 4470 944 1600 2161

336 19-Oct-01 11400 11600 8180 7050 9558

337 18-Oct-01 1080 1770 563 854 1067

338 18-Oct-01 999 1050 753 772 894

339 18-Oct-01 660 3900 1600 1060 1805

340 15-Oct-01 945 814 953 954 917

341 15-Oct-01 742 2060 1010 778 1148

342 15-Oct-01 1290 807 562 244 726

343 15-Oct-01 959 1080 1566 1220 1206

344 15-Oct-01 801 364 637 472 569

345 15-Oct-01 1230 59 419 1080 697

346 15-Oct-01 730 348 396 281 439

347 19-Oct-01 371 726 964 394 614

ICF International A-16 DRAFT – December 2006
Appendix A

Exhibit A-4. Pre-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot 

Analysis ID Sampling Date

Property Average 

(mg/kg) d

348 15-Oct-01 860 527 892 430 677

349 15-Oct-01 388 334 266 210 300

350 15-Oct-01 128 490 488 161 317

351 17-Oct-01 624 869 316 379 547

352 17-Oct-01 1250 857 425 1480 1003

353 19-Oct-01 2320 2740 1160 2860 2270

354 17-Oct-01 1370 3900 1350 1050 1918

355 17-Oct-01 180 392 413 413 350

356 17-Oct-01 300 263 144 100 202

357 17-Oct-01 826 798 496 960 770

358 17-Oct-01 919 560 288 771 635

359 17-Oct-01 886 617 128 143 444

360 17-Oct-01 1110 549 806 -- 822

361 17-Oct-01 624 886 257 544 578

362 15-Oct-01 907 9421 699 1110 3034

363 15-Oct-01 890 2160 947 -- 1332

364 15-Oct-01 372 1110 1240 1060 946

365 15-Oct-01 564 913 1220 521 805

366 15-Oct-01 231 838 926 244 560

367 15-Oct-01 173 330 250 915 417

368 18-Oct-01 302 480 688 319 447

369 16-Oct-01 12100 5170 9140 4290 7675

370 18-Oct-01 1380 855 480 519 809

371 16-Oct-01 2740 977 1300 1850 1717

372 18-Oct-01 65 210 169 135 145

373 16-Oct-01 237 209 197 200 211

374 16-Oct-01 691 228 354 197 368

375 16-Oct-01 510 341 159 434 361

376 16-Oct-01 179 666 1080 41 492

377 16-Oct-01 257 229 113 151 188

378 16-Oct-01 435 382 498 391 427

379 16-Oct-01 237 413 330 309 322

380 16-Oct-01 342 448 614 281 421

381 17-Oct-01 466 618 532 529 536

382 17-Oct-01 454 559 726 629 592

383 19-Oct-01 270 383 311 433 349

384 19-Oct-01 294 288 815 768 541

385 16-Oct-01 367 1690 391 1080 882

386 16-Oct-01 4970 4250 3700 2680 3900

387 16-Oct-01 3130 2750 3180 2010 2768

388 16-Oct-01 1280 1570 5100 1170 2280

389 18-Oct-01 1120 8100 159 756 2534

390 18-Oct-01 1800 1750 1400 1400 1588

391 16-Oct-01 1380 1010 1150 936 1119

392 18-Oct-01 977 1330 758 1500 1141

393 16-Oct-01 1130 1923 425 741 1055

394 16-Oct-01 319 904 584 396 551

395 18-Oct-01 523 782 758 766 707

396 18-Oct-01 634 800 903 452 697

397 18-Oct-01 377 60 658 529 406

398 18-Oct-01 289 155 263 868 394

399 18-Oct-01 691 464 408 416 495

ICF International A-17 DRAFT – December 2006
Appendix A

Exhibit A-4. Pre-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot 

Analysis ID Sampling Date

Property Average 

(mg/kg) d

400 18-Oct-01 451 1010 391 440 573

401 15-Oct-01 814 1040 567 969 848

402 15-Oct-01 2970 3080 396 513 1740

403 18-Oct-01 1670 2290 1440 1230 1658

404 15-Oct-01 655 636 401 545 559

405 18-Oct-01 679 516 688 519 601

406 15-Oct-01 748 1110 311 896 766

407 15-Oct-01 440 514 324 346 406

408 15-Oct-01 470 682 -- 573 575

409 15-Oct-01 1010 1060 489 1620 1045

410 15-Oct-01 928 1090 682 1500 1050

411 15-Oct-01 982 541 791 444 690

412 15-Oct-01 768 867 -- 649 761

413 16-Oct-01 874 1110 1340 767 1023

414 16-Oct-01 1160 1150 621 814 936

415 16-Oct-01 1160 1130 609 245 786

416 16-Oct-01 1240 866 1070 1260 1109

417 16-Oct-01 9530 3450 537 2060 3894

418 16-Oct-01 1640 1290 331 329 898

419 19-Oct-01 332 560 165 440 374

420 18-Oct-01 733 455 524 529 560

421 18-Oct-01 774 559 341 307 495

422 18-Oct-01 492 800 281 639 553

423 18-Oct-01 530 804 793 440 642

424 18-Oct-01 562 1320 578 619 770

425 16-Oct-01 1040 1360 1030 1139 1142

426 16-Oct-01 949 1240 850 1110 1037

427 18-Oct-01 1230 4410 2010 2230 2470

428 17-Oct-01 836 1540 778 934 1022

429 17-Oct-01 1710 1490 1160 1940 1575

430 17-Oct-01 1530 1170 597 471 942

431 17-Oct-01 1990 1820 426 321 1139

432 17-Oct-01 945 1250 560 323 770

433 17-Oct-01 2050 2990 1970 9410 4105

434 17-Oct-01 1270 2660 3930 1140 2250

435 19-Oct-01 2670 594 1520 1170 1489

436 17-Oct-01 556 1880 1090 1460 1247

437 05-Oct-01 3850 5830 5610 3240 4633

438 17-Oct-01 515 2150 285 228 795

439 18-Oct-01 1880 1220 1960 3230 2073

440 16-Oct-01 1380 1070 1480 1880 1453

441 16-Oct-01 3780 3230 2240 2430 2920

442 19-Oct-01 13500 5180 5590 6500 7693

443 16-Oct-01 3500 5010 1630 754 2724

444 18-Oct-01 1890 1540 1830 1920 1795

445 18-Oct-01 710 719 998 1650 1019

446 18-Oct-01 3670 645 1050 1290 1664

447 18-Oct-01 564 775 352 631 581

448 18-Oct-01 436 854 516 2010 954

449 18-Oct-01 858 446 544 719 642

450 18-Oct-01 322 635 527 491 494

451 18-Oct-01 781 821 661 800 766

ICF International A-18 DRAFT – December 2006
Appendix A

Exhibit A-4. Pre-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot 

Analysis ID Sampling Date

Property Average 

(mg/kg) d

452 18-Oct-01 435 249 726 657 517

453 18-Oct-01 403 740 556 552 563

454 18-Oct-01 682 618 578 788 667

455 18-Oct-01 422 402 690 577 523

456 19-Oct-01 697 4780 858 408 1686

457 18-Oct-01 674 430 390 509 501

458 18-Oct-01 124 333 1610 638 676

459 18-Oct-01 566 732 406 240 486

460 18-Oct-01 865 562 453 670 638

461 18-Oct-01 489 386 599 487 490

462 18-Oct-01 518 950 548 552 642

463 17-Oct-01 829 416 100 194 385

464 17-Oct-01 342 718 424 580 516

465 17-Oct-01 357 530 343 487 429

466 17-Oct-01 553 596 401 581 533

467 19-Oct-01 778 33 370 495 419

468 17-Oct-01 1330 1310 707 381 932

469 17-Oct-01 89 286 464 230 267

470 19-Oct-01 1770 903 398 1350 1105

471 19-Oct-01 1230 1390 624 379 906

472 19-Oct-01 815 835 494 720 716

473 15-Oct-01 1670 534 933 1520 1164

474 15-Oct-01 569 158 1030 884 660

475 15-Oct-01 98 168 299 280 211

476 19-Oct-01 603 744 592 607 637

477 16-Oct-01 264 1670 2730 1900 1641

478 16-Oct-01 1390 999 560 878 957

479 16-Oct-01 412 439 570 613 509

480 16-Oct-01 669 110 854 602 559

481 16-Oct-01 156 862 335 189 386

482 16-Oct-01 2280 1340 1860 2820 2075

483 16-Oct-01 795 661 1660 1020 1034

484 17-Oct-01 2440 2340 1330 1210 1830

485 17-Oct-01 1620 1830 826 1390 1417

486 17-Oct-01 2450 1240 809 702 1300

487 18-Oct-01 1060 3930 1810 974 1944

488 17-Oct-01 887 847 1370 625 932

489 18-Oct-01 489 618 2760 904 1193

490 16-Oct-01 529 721 399 550 550

491 18-Oct-01 1400 353 956 784 873

492 17-Oct-01 434 903 608 634 645

493 17-Oct-01 429 399 492 542 466

494 17-Oct-01 592 986 955 1270 951

495 17-Oct-01 1640 440 641 749 868

496 23-Oct-01 1560 1170 2020 1170 1480

497 23-Oct-01 2440 3120 1460 1700 2180

498 23-Oct-01 1190 775 1590 1810 1341

499 23-Oct-01 313 372 396 365 362

500 23-Oct-01 453 301 2820 518 1023

501 23-Oct-01 6830 1260 3470 4900 4115

502 23-Oct-01 2250 3100 2000 2000 2338

503 23-Oct-01 3120 2370 3350 2030 2718

ICF International A-19 DRAFT – December 2006
Appendix A

Exhibit A-4. Pre-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot 

Analysis ID Sampling Date

Property Average 

(mg/kg) d

504 23-Oct-01 2530 1550 5480 3190 3188

505 23-Oct-01 1110 1570 2250 1380 1578

506 23-Oct-01 1020 1100 1010 1250 1095

507 23-Oct-01 2640 7230 1120 2030 3255

508 23-Oct-01 534 464 988 1040 757

509 23-Oct-01 837 755 1560 1170 1081

510 23-Oct-01 716 617 768 888 747

511 23-Oct-01 2830 2550 1060 -- 2147

512 23-Oct-01 2130 3110 1390 1420 2013

513 23-Oct-01 5350 3330 1090 1300 2768

514 23-Oct-01 1020 1690 1290 1500 1375

515 23-Oct-01 970 1420 2260 2070 1680

516 23-Oct-01 1400 1570 1630 1090 1423

517 23-Oct-01 1120 1370 1350 1270 1278

518 23-Oct-01 972 1510 1480 1460 1356

519 23-Oct-01 1110 797 1110 1590 1152

520 23-Oct-01 5490 1770 -- -- 3630

521 23-Oct-01 3590 2150 12700 7510 6488

522 23-Oct-01 505 1040 852 420 704

523 23-Oct-01 32800 13300 24100 23200 23350

524 23-Oct-01 2530 1860 3070 3400 2715

525 23-Oct-01 863 2150 2110 2440 1891

526 24-Oct-01 2950 2470 1600 1610 2158

527 24-Oct-01 1480 1400 1040 684 1151

528 24-Oct-01 642 601 533 619 599

529 24-Oct-01 720 1300 903 1070 998

530 24-Oct-01 1050 749 801 1700 1075

531 24-Oct-01 511 438 641 882 618

532 24-Oct-01 1640 1490 8220 8520 4968

533 24-Oct-01 215 659 677 624 544

534 24-Oct-01 12100 8330 5310 11700 9360

535 24-Oct-01 1130 2540 2240 2270 2045

536 24-Oct-01 213 211 530 373 332

537 24-Oct-01 197 171 -- -- 184

538 24-Oct-01 1780 2070 1290 1750 1723

539 24-Oct-01 408 203 171 529 328

540 24-Oct-01 1180 1370 870 644 1016

541 24-Oct-01 518 386 831 381 529

542 24-Oct-01 806 594 1150 747 824

543 24-Oct-01 1180 1280 868 942 1068

544 24-Oct-01 2020 814 304 353 873

545 25-Oct-01 8630 7640 7030 4840 7035

546 25-Oct-01 615 1150 430 930 781

547 25-Oct-01 1020 1650 1920 686 1319

548 25-Oct-01 1890 2250 1770 3750 2415

549 25-Oct-01 2110 2650 3260 3690 2928

550 25-Oct-01 1860 2820 2930 1530 2285

551 25-Oct-01 7670 14600 308 1120 5925

552 25-Oct-01 11500 7460 2620 5670 6813

553 25-Oct-01 11300 5310 4030 3570 6053

554 25-Oct-01 772 1870 1700 1440 1446

555 26-Oct-01 1570 340 4260 2730 2225

ICF International A-20 DRAFT – December 2006
Appendix A

Exhibit A-4. Pre-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot 

Analysis ID Sampling Date

Property Average 

(mg/kg) d

556 26-Oct-01 705 645 578 416 586

557 26-Oct-01 916 1100 394 662 768

558 26-Oct-01 671 389 352 438 463

559 26-Oct-01 539 616 576 824 639

560 26-Oct-01 4690 7370 7580 6990 6658

561 26-Oct-01 942 247 432 817 610

562 26-Oct-01 1570 1320 632 501 1006

563 26-Oct-01 993 772 1090 859 929

564 26-Oct-01 462 313 539 558 468

565 26-Oct-01 332 1000 2290 1750 1343

566 26-Oct-01 690 366 928 1210 799

567 26-Oct-01 478 298 1080 1310 792

568 26-Oct-01 917 475 466 1490 837

569 26-Oct-01 427 420 468 546 465

570 26-Oct-01 2170 2120 3600 4110 3000

571 26-Oct-01 1010 599 2870 2170 1662

572 26-Oct-01 2520 1380 2850 4000 2688

573 27-Sep-01 904 632 684 553 693

574 07-Nov-00 1800 5000 2000 1700 2625

576 08-Nov-00 1400 1600 2000 1000 1500

577 19-Jul-02 1977 1657 1620 1717 1743

578 02-Nov-01 241 292 195 111 210

579 24-Sep-01 1920 1170 1490 1530 1528

580 11-Oct-01 -- 492 1300 3420 1737

581 31-Oct-01 1170 795 618 764 837

582 30-Oct-01 1120 1770 1020 1100 1253

583 31-Oct-01 450 281 354 207 323

584 31-Oct-01 2550 1920 1170 774 1604

585 01-Nov-01 1880 2130 1550 1960 1880

586 02-Nov-01 1490 2260 1630 1320 1675

587 02-Nov-01 3710 1520 1440 2050 2180

588 02-Nov-01 460 489 102 294 336

589 02-Nov-01 5540 2410 -- -- 3975

590 02-Nov-01 267 396 143 165 243

591 02-Nov-01 1740 835 538 441 889

592 02-Nov-01 538 540 365 381 456

593 02-Nov-01 204 407 360 203 294

594 02-Nov-01 298 466 375 214 338

595 02-Nov-01 894 399 625 1090 752

596 02-Nov-01 4480 3670 2000 2440 3148

597 02-Nov-01 3020 1450 2350 1160 1995

598 02-Nov-01 1850 1620 1450 1640 1640

599 02-Nov-01 519 428 858 343 537

600 02-Nov-01 994 1360 1730 542 1157

601 02-Nov-01 2050 1990 2910 2540 2373

602 02-Nov-01 421 458 705 1100 671

603 02-Nov-01 622 844 3170 1400 1509

604 02-Nov-01 1230 1230 1250 1210 1230

605 02-Nov-01 515 321 520 293 412

606 02-Nov-01 539 703 849 729 705

607 02-Nov-01 761 937 839 1120 914

608 02-Nov-01 1470 1130 1110 956 1167

ICF International A-21 DRAFT – December 2006
Appendix A

Exhibit A-4. Pre-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot 

Analysis ID Sampling Date

Property Average 

(mg/kg) d

609 02-Nov-01 1070 958 946 299 818

610 02-Nov-01 870 1160 1140 938 1027

611 02-Nov-01 1860 2090 2200 2100 2063

612 02-Nov-01 1160 4770 2280 1160 2343

613 02-Nov-01 1840 2680 1190 1170 1720

614 02-Nov-01 1380 1830 2170 794 1544

615 02-Nov-01 1030 1340 1420 1660 1363

616 31-Oct-01 941 446 531 256 544

617 31-Oct-01 1320 1300 1060 1500 1295

618 31-Oct-01 1020 635 1060 1210 981

619 05-Nov-01 179 181 283 571 304

620 05-Nov-01 1370 410 221 311 578

621 05-Nov-01 2200 2820 4800 1880 2925

622 05-Nov-01 815 1460 186 238 675

623 05-Nov-01 977 110 199 185 368

624 05-Nov-01 393 126 195 672 347

625 06-Nov-01 1680 1350 1020 868 1230

626 06-Nov-01 488 657 554 717 604

627 06-Nov-01 2650 2580 1300 1240 1943

628 06-Nov-01 822 745 633 901 775

629 06-Nov-01 1240 906 476 555 794

630 06-Nov-01 803 562 502 769 659

631 06-Nov-01 685 498 -- -- 592

632 06-Nov-01 441 355 1710 719 806

633 06-Nov-01 910 587 653 428 645

634 06-Nov-01 965 760 584 421 683

635 06-Nov-01 788 682 274 351 524

636 06-Nov-01 721 330 449 444 486

637 08-Nov-01 1360 1140 1220 1050 1193

638 08-Nov-01 492 682 605 367 537

639 08-Nov-01 725 706 647 696 694

640 08-Nov-01 346 368 122 170 252

641 08-Nov-01 -- 496 462 662 540

642 08-Nov-01 1370 2020 2270 1180 1710

643 08-Nov-01 644 944 -- -- 794

644 08-Nov-01 747 515 -- -- 631

645 06-Nov-01 596 702 1190 854 836

646 06-Nov-01 766 621 626 518 633

647 06-Nov-01 1040 846 413 882 795

648 06-Nov-01 480 760 795 1010 761

649 06-Nov-01 1060 631 532 862 771

650 06-Nov-01 384 600 491 566 510

651 06-Nov-01 522 690 565 490 567

652 06-Nov-01 619 704 587 623 633

653 06-Nov-01 256 180 -- 160 199

654 06-Nov-01 1450 1190 808 844 1073

655 06-Nov-01 1040 816 541 647 761

656 06-Nov-01 328 409 316 263 329

657 06-Nov-01 765 356 952 892 741

658 06-Nov-01 556 580 517 261 479

659 06-Nov-01 530 890 318 368 527

660 08-Nov-01 695 815 771 450 683

ICF International A-22 DRAFT – December 2006
Appendix A

Exhibit A-4. Pre-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot 

Analysis ID Sampling Date

Property Average 

(mg/kg) d

661 08-Nov-01 1030 244 2320 3030 1656

662 08-Nov-01 920 1410 588 715 908

663 08-Nov-01 380 470 690 753 573

664 08-Nov-01 1030 776 677 534 754

665 08-Nov-01 2590 1880 2350 2780 2400

666 08-Nov-01 408 283 -- -- 346

667 08-Nov-01 822 874 831 895 856

668 08-Nov-01 1760 1050 1080 1500 1348

669 08-Nov-01 588 255 607 502 488

670 31-Oct-01 505 651 545 256 489

671 31-Oct-01 448 555 422 580 501

672 31-Oct-01 1210 3070 1380 2090 1938

673 31-Oct-01 1660 1580 1980 2340 1890

674 07-Nov-00 2400 1000 1400 2600 1850

675 17-Oct-01 525 657 584 533 575

676 06-Feb-02 1633 1440 1173 1210 1364

677 26-Nov-02 1197 1220 2857 3177 2113

678 26-Nov-02 1747 1210 3680 -- 2212

679 22-Feb-02 655 287 241 594 444

680 05-Mar-02 552 315 641 580 522

681 05-Mar-02 541 524 525 801 598

682 06-Mar-02 2247 1350 551 615 1191

683 06-Mar-02 552 634 650 740 644

684 04-Mar-02 4037 4443 4647 14300 6857

685 08-Mar-02 1487 916 538 568 877

686 07-Mar-02 585 1129 2103 3797 1904

687 20-Mar-02 466 1477 547 587 769

688 20-Mar-02 1009 2147 805 563 1131

689 20-Mar-02 827 1075 322 378 651

690 22-Mar-02 464 298 164 203 282

691 22-Mar-02 148 205 358 184 224

692 22-Mar-02 1627 1753 1370 1357 1527

693 22-Mar-02 1147 2900 2562 2217 2207

699 04-Oct-01 13600 4870 2190 8450 7278

703 15-Apr-02 474 295 599 286 414

706 22-Mar-02 6780 1070 -- -- 3925

707 15-Apr-02 961 906 -- -- 934

708 08-Aug-02 653 1040 693 443 707

709 19-Dec-02 754 469 347 332 476

710 15-Aug-03 730 672 773 1036 803

711 15-Apr-02 1360 1343 1183 2577 1616

714 15-Aug-03 853 1347 901 779 970

718 22-Jul-04 1363 -- -- -- 1363

723 08-Aug-02 967 536 590 999 773

725 15-Apr-02 1177 1920 1893 1327 1579

726 18-Jul-02 3200 2583 2253 2630 2667

728 08-May-02 482 328 422 538 443

729 30-Jan-02 329 411 311 282 333

730 31-Jan-02 209 433 236 295 293

731 08-Mar-02 183 196 211 132 181

732 08-Mar-02 462 340 212 243 314

733 31-Jan-02 231 191 190 165 194

ICF International A-23 DRAFT – December 2006
Appendix A

Exhibit A-4. Pre-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot 

Analysis ID Sampling Date

Property Average 

(mg/kg) d

734 22-Mar-02 148 133 73 64 105

735 31-Jan-02 128 96 235 56 129

736 31-Jan-02 62 55 47 49 53

737 05-Feb-02 72 53 57 61 61

738 06-Jun-02 110 ND 130 ND 154 130 ND 85

739 06-Jun-02 140 ND 140 ND 150 ND 181 99

740 06-Jun-02 152 130 ND 159 120 ND 109

741 06-Jun-02 150 ND 140 ND 130 ND 192 101

742 06-Jun-02 185 159 170 ND 140 ND 125

743 06-Jun-02 140 ND 130 ND 202 140 ND 102

744 06-Jun-02 165 415 220 152 238

745 06-Jun-02 227 130 ND 140 ND 172 134

746 06-Jun-02 200 267 140 ND 130 ND 151

747 06-Jun-02 130 ND 154 120 ND 120 ND 85

748 10-Jun-02 120 ND 155 140 ND 352 159

749 10-Jun-02 397 142 287 140 ND 224

750 10-Jun-02 523 296 194 342 339

751 10-Jun-02 130 ND 149 157 141 128

752 10-Jun-02 130 ND 175 186 150 ND 125

753 10-Jun-02 150 ND 212 140 ND 140 ND 107

754 11-Jun-02 231 207 257 193 222

755 11-Jun-02 207 378 131 140 ND 197

756 11-Jun-02 283 201 224 140 ND 195

757 11-Jun-02 181 150 ND 140 ND 140 ND 99

758 11-Jun-02 140 ND 219 140 ND 140 ND 107

759 11-Jun-02 150 ND 140 ND 150 ND 140 ND 73

760 11-Jun-02 130 ND 140 ND 140 ND 120 ND 66

761 11-Jun-02 140 ND 250 150 ND 288 171

762 11-Jun-02 146 170 ND 130 ND 175 118

763 11-Jun-02 355 624 130 ND 140 ND 279

764 26-Jul-04 332 124 145 193 199

765 12-Jun-02 167 163 133 130 ND 132

766 31-May-02 159 169 120 ND 197 146

767 31-May-02 156 163 156 110 ND 133

768 31-May-02 469 118 163 110 ND 201

769 31-May-02 370 339 153 216 270

770 31-May-02 305 232 150 ND 128 185

771 31-May-02 264 173 168 178 196

772 31-May-02 465 279 140 132 254

773 31-May-02 686 576 288 171 430

774 31-May-02 120 ND 220 160 120 ND 125

775 31-May-02 256 299 131 107 198

776 31-May-02 120 ND 221 182 127 148

777 31-May-02 192 328 133 144 199

778 31-May-02 1120 398 436 393 587

779 31-May-02 224 232 110 ND 177 172

780 31-May-02 291 213 100 ND 257 203

781 31-May-02 238 215 187 214 214

782 31-May-02 178 142 110 ND 120 ND 109

783 31-May-02 253 268 110 ND 195 193

784 03-Jun-02 458 306 149 144 264

785 03-Jun-02 201 201 121 110 ND 145

ICF International A-24 DRAFT – December 2006
Appendix A

Exhibit A-4. Pre-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot 

Analysis ID Sampling Date

Property Average 

(mg/kg) d

786 03-Jun-02 250 130 ND 120 ND 170 136

787 04-Jun-02 170 140 ND 130 ND 150 ND 95

788 04-Jun-02 147 166 130 ND 140 ND 112

789 04-Jun-02 140 ND 150 ND 150 ND 139 90

790 04-Jun-02 358 165 289 316 282

791 04-Jun-02 140 ND 150 ND 149 130 ND 90

792 05-Jun-02 130 ND 140 ND 140 ND 152 89

793 06-Jun-02 142 100 ND 226 338 189

794 11-Jun-02 183 144 150 ND 150 ND 119

796 19-Jun-02 205 182 282 135 201

797 20-Jun-02 -- 265 161 150 ND 167

798 12-Jun-02 182 158 -- 180 ND 143

799 22-Jun-02 213 150 ND 148 140 ND 127

800 19-Jun-02 140 ND 169 170 ND 203 132

801 20-Jun-02 288 300 170 ND 157 ND 188

802 20-Jun-02 150 ND 170 150 ND 150 ND 99

803 18-Jun-02 218 150 ND 165 150 ND 133

804 18-Jun-02 150 ND 150 ND 180 ND 180 ND 83

805 19-Jun-02 170 ND 140 ND 250 170 ND 123

806 18-Jun-02 170 ND 170 ND 150 ND 130 ND 78

807 18-Jun-02 187 150 ND 212 150 ND 137

808 19-Jun-02 204 147 ND 173 170 ND 134

809 19-Jun-02 184 189 228 148 187

810 18-Jun-02 245 217 346 371 295

811 19-Jun-02 140 ND 150 ND 151 160 114

812 20-Jun-02 231 189 150 ND 170 ND 145

813 18-Jun-02 173 183 140 ND 140 ND 124

814 19-Jun-02 257 163 ND 140 130 ND 136

815 19-Jun-02 184 150 ND 170 ND 193 134

816 20-Jun-02 588 270 272 365 374

817 20-Jun-02 197 263 150 ND 150 ND 153

818 27-Jun-02 203 274 207 199 221

819 27-Jun-02 140 ND 170 ND 170 ND 222 116

820 27-Jun-02 202 298 376 244 280

821 27-Jun-02 520 335 277 156 322

822 27-Jun-02 205 333 132 194 216

823 27-Jun-02 252 212 212 205 220

824 27-Jun-02 367 286 180 ND 194 234

825 27-Jun-02 221 249 192 192 214

826 27-Jun-02 221 191 153 163 182

827 26-Jun-02 269 180 199 150 ND 181

828 26-Jun-02 384 451 308 150 ND 305

829 26-Jun-02 144 188 161 130 ND 140

830 26-Jun-02 140 149 179 140 ND 135

831 26-Jun-02 130 ND 130 ND 130 ND 120 ND 64

832 26-Jun-02 304 110 ND 467 727 388

833 26-Jun-02 150 ND 150 ND 197 150 ND 106

834 03-Jul-02 2080 5770 1270 1490 2653

835 09-Jul-02 185 247 155 198 196

836 09-Jul-02 264 181 113 117 169

837 09-Jul-02 176 247 218 170 203

838 09-Jul-02 148 223 161 185 179

ICF International A-25 DRAFT – December 2006
Appendix A

Exhibit A-4. Pre-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot 

Analysis ID Sampling Date

Property Average 

(mg/kg) d

839 03-Jul-02 52.7 129 93 218 123

840 03-Jul-02 207 118 169 272 192

841 03-Jul-02 -- 164 151 134 150

842 09-Jul-02 172 80 91 41 96

843 09-Jul-02 150 110 86 214 140

844 03-Jul-02 99 111 169 211 148

845 09-Jul-02 198 135 122 115 143

846 03-Jul-02 149 35 35 56 69

847 09-Jul-02 109 92 304 583 272

848 12-Jul-02 340 743 119 81 321

849 12-Jul-02 347 62 195 273 219

850 11-Jul-02 73 121 51 36 70

851 11-Jul-02 78 101 61 32 68

852 11-Jul-02 184 140 121 116 140

853 11-Jul-02 518 1210 156 252 534

854 11-Jul-02 343 653 199 107 326

855 11-Jul-02 418 483 305 361 392

856 11-Jul-02 236 164 82 161 161

857 11-Jul-02 330 371 164 208 268

858 11-Jul-02 191 83 207 150 158

859 12-Jul-02 104 107 140 96 112

860 12-Jul-02 223 230 284 226 241

861 12-Jul-02 193 233 167 236 207

862 11-Jul-02 228 261 50 81 155

863 11-Jul-02 154 173 111 173 153

864 11-Jul-02 25 56 85 71 59

865 17-Jul-02 248 277 197 251 243

866 12-Jul-02 96 341 141 128 177

867 12-Jul-02 129 417 120 85 188

868 15-Jul-02 159 277 223 165 206

869 15-Jul-02 274 299 206 188 242

870 15-Jul-02 298 -- 143 186 209

871 15-Jul-02 199 341 212 130 221

872 15-Jul-02 287 298 220 285 273

873 17-Jul-02 127 183 219 152 170

874 17-Jul-02 143 150 116 118 132

875 18-Jul-02 254 232 91 246 206

876 11-Jul-02 177 280 311 526 324

877 11-Jul-02 148 89 11 111 90

878 18-Jul-02 326 330 297 329 321

879 11-Jul-02 168 242 181 116 177

880 17-Jul-02 271 441 569 443 431

881 17-Jul-02 265 218 303 265 263

882 15-Jul-02 441 328 120 207 274

883 12-Jul-02 352 355 289 243 310

884 18-Jul-02 200 238 109 249 199

885 09-Jul-02 228 500 230 235 298

886 09-Jul-02 395 293 179 188 264

887 09-Jul-02 257 214 181 191 211

888 09-Jul-02 215 274 295 252 259

889 09-Jul-02 175 385 206 308 269

890 09-Jul-02 268 293 311 193 266

ICF International A-26 DRAFT – December 2006
Appendix A

Exhibit A-4. Pre-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot 

Analysis ID Sampling Date

Property Average 

(mg/kg) d

891 12-Jul-02 342 370 387 374 368

892 12-Jul-02 436 454 359 244 373

893 12-Jul-02 303 230 287 310 283

894 12-Jul-02 498 342 314 548 426

895 16-Jul-02 307 244 147 122 205

896 16-Jul-02 156 192 70 98 129

897 16-Jul-02 86 133 16 90 81

898 15-Jul-02 174 187 186 155 176

899 15-Jul-02 194 211 190 163 190

900 15-Jul-02 133 108 15 186 111

901 15-Jul-02 129 69 235 164 149

902 16-Jul-02 185 201 104 135 156

903 11-Jul-02 170 83 82 137 118

904 18-Jul-02 100 179 248 289 204

905 11-Jul-02 177 207 243 130 189

906 15-Jul-02 239 217 196 183 209

907 15-Jul-02 134 265 234 190 206

908 16-Jul-02 133 206 171 130 160

909 16-Jul-02 229 162 140 84 154

910 15-Jul-02 33 127 128 194 121

911 16-Jul-02 116 184 192 155 162

912 16-Jul-02 55 163 121 186 131

913 16-Jul-02 243 225 141 227 209

914 18-Jul-02 296 276 295 235 276

915 18-Jul-02 348 361 213 173 274

916 18-Jul-02 515 635 175 281 402

917 18-Jul-02 513 369 287 295 366

918 18-Jul-02 337 208 207 293 261

919 18-Jul-02 181 165 391 214 238

920 18-Jul-02 363 361 287 367 345

921 18-Jul-02 446 360 221 343 343

922 03-Jul-02 1220 879 1480 621 1050

923 11-Jul-02 4810 3970 -- -- 4390

924 26-Jun-02 150 ND 120 ND 140 ND 140 ND 69

925 07-Aug-02 199 121 112 108 135

926 07-Aug-02 538 291 173 235 309

927 07-Aug-02 262 156 37 97 138

928 07-Aug-02 318 296 247 152 253

929 06-Aug-02 317 195 184 264 240

930 06-Aug-02 344 266 223 157 248

931 06-Aug-02 292 317 239 153 250

932 06-Aug-02 279 258 154 205 224

933 07-Aug-02 504 314 205 381 351

934 07-Aug-02 279 304 141 306 258

935 07-Aug-02 269 181 183 145 195

936 07-Aug-02 299 210 209 217 234

937 06-Aug-02 357 371 262 196 297

938 06-Aug-02 148 141 137 179 151

939 06-Aug-02 193 268 171 117 187

940 06-Aug-02 119 197 210 118 161

941 07-Aug-02 314 417 167 236 284

942 06-Aug-02 283 362 148 119 228

ICF International A-27 DRAFT – December 2006
Appendix A

Exhibit A-4. Pre-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot 

Analysis ID Sampling Date

Property Average 

(mg/kg) d

943 06-Aug-02 368 196 148 225 234

944 26-Jun-02 150 ND 140 ND 137 140 ND 88

945 11-Jun-02 210 257 150 ND 133 169

946 12-Jun-02 140 ND 158 720 150 ND 256

947 05-Jun-02 150 ND 133 ND 154 140 ND 91

948 29-Aug-02 280 325 332 183 280

949 29-Aug-02 597 351 299 259 377

950 29-Aug-02 79.6 148 107 166 125

951 29-Aug-02 348 223 120 185 219

952 29-Aug-02 264 276 167 83.5 198

953 27-Aug-02 295 536 482 616 482

954 29-Aug-02 247 391 374 295 327

955 27-Aug-02 313 343 244 376 319

956 27-Aug-02 278 302 316 283 295

957 27-Aug-02 216 225 134 331 227

958 27-Aug-02 374 202 282 160 255

959 27-Aug-02 333 113 182 289 229

960 27-Aug-02 385 310 234 115 261

961 27-Aug-02 230 245 106 219 200

962 27-Aug-02 186 349 238 127 225

963 27-Aug-02 288 315 368 222 298

964 27-Aug-02 319 433 206 313 318

965 27-Aug-02 225 198 333 388 286

966 27-Aug-02 225 210 225 305 241

967 27-Aug-02 166 235 240 240 220

968 27-Aug-02 197 425 229 177 257

969 27-Aug-02 478 416 284 164 336

970 27-Aug-02 241 235 104 210 198

971 27-Aug-02 409 244 188 182 256

972 27-Aug-02 263 184 188 303 235

973 27-Aug-02 157 268 262 243 233

974 27-Aug-02 337 183 367 189 269

975 04-Sep-02 284 330 373 374 340

976 04-Sep-02 160 246 203 138 187

977 04-Sep-02 433 279 124 222 265

978 04-Sep-02 210 285 366 237 275

979 04-Sep-02 289 264 136 212 225

980 04-Sep-02 319 710 252 312 398

981 03-Sep-02 14 109 130 89 86

982 03-Sep-02 243 160 266 187 214

983 03-Sep-02 142 74 197 130 136

984 03-Sep-02 215 138 116 163 158

985 03-Sep-02 68 64 155 118 101

986 03-Sep-02 234 255 226 169 221

987 03-Sep-02 188 271 142 211 203

988 03-Sep-02 148 66 42 25 70

989 03-Sep-02 110 185 195 26 129

990 03-Sep-02 201 182 260 195 210

991 03-Sep-02 25 -- 135 223 128

992 30-Aug-02 207 233 229 125 199

993 30-Aug-02 95 149 130 106 120

994 30-Aug-02 239 171 234 202 212

ICF International A-28 DRAFT – December 2006
Appendix A

Exhibit A-4. Pre-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot 

Analysis ID Sampling Date

Property Average 

(mg/kg) d

995 30-Aug-02 276 215 152 298 235

996 30-Aug-02 464 230 213 312 305

997 30-Aug-02 99 13 50 184 87

998 30-Aug-02 62 88 192 218 140

999 11-Sep-02 229 350 145 184 227

1000 12-Sep-02 311 513 370 231 356

1001 11-Sep-02 117 187 146 123 143

1002 12-Sep-02 251 200 121 59 158

1003 12-Sep-02 167 201 164 108 160

1004 12-Sep-02 342 168 128 114 188

1005 12-Sep-02 237 157 74 124 148

1006 12-Sep-02 203 160 177 55 149

1007 12-Sep-02 602 309 329 185 356

1008 12-Sep-02 192 224 262 188 217

1009 12-Sep-02 104 141 172 272 172

1010 10-Sep-02 236 193 139 108 169

1011 11-Sep-02 253 179 287 318 259

1012 11-Sep-02 84 260 146 119 152

1013 11-Sep-02 64 123 19 81 72

1014 11-Sep-02 156 170 111 139 144

1015 10-Sep-02 256 222 207 95 195

1016 06-Sep-02 149 133 36 120 110

1017 11-Sep-02 198 215 98 157 167

1018 10-Sep-02 137 58 40 122 89

1019 10-Sep-02 197 203 221 245 217

1020 11-Sep-02 -- 92 219 121 144

1021 15-Jul-02 170 114 208 175 167

1022 06-Sep-02 206 160 230 138 184

1023 30-Aug-02 158 169 165 174 167

1024 06-Sep-02 355 381 170 186 273

1025 06-Sep-02 37 41 72 96 62

1026 30-Aug-02 108 60 155 115 110

1027 30-Aug-02 24 70 82 137 78

1028 06-Sep-02 48 115 113 48 81

1029 30-Aug-02 131 177 126 174 152

1030 30-Aug-02 212 199 128 163 176

1031 30-Aug-02 215 7 51 129 101

1032 06-Sep-02 123 123 114 180 135

1033 06-Sep-02 10 89 131 137 92

1034 06-Sep-02 27 122 159 156 116

1035 06-Sep-02 125 119 136 26 102

1036 30-Aug-02 504 389 173 282 337

1037 06-Sep-02 175 285 139 175 194

1038 06-Sep-02 92 151 175 241 165

1039 06-Sep-02 170 300 241 228 235

1040 10-Sep-02 113 106 268 174 165

1041 10-Sep-02 118 199 192 56 141

1042 10-Sep-02 314 166 185 335 250

1043 11-Sep-02 175 166 299 206 212

1044 10-Sep-02 221 170 65 152 152

1045 11-Sep-02 783 59 125 45 253

1046 11-Sep-02 107 264 133 191 174

ICF International A-29 DRAFT – December 2006
Appendix A

Exhibit A-4. Pre-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot 

Analysis ID Sampling Date

Property Average 

(mg/kg) d

1047 11-Sep-02 145 33 -- 67 82

1048 10-Sep-02 194 281 215 343 258

1049 11-Sep-02 64 27 43 107 60

1050 10-Sep-02 204 239 153 224 205

1051 11-Sep-02 135 155 119 137 137

1052 10-Sep-02 169 216 210 -- 198

1053 11-Sep-02 326 267 172 304 267

1054 10-Sep-02 122 152 170 106 138

1055 10-Sep-02 221 200 80 150 163

1056 10-Sep-02 215 217 136 224 198

1057 10-Sep-02 151 237 91 206 171

1058 10-Sep-02 225 129 183 207 186

1059 10-Sep-02 202 170 200 247 205

1060 10-Sep-02 133 58 143 101 109

1061 10-Sep-02 114 173 178 96 140

1062 10-Sep-02 74 37 101 140 88

1063 16-Oct-02 122 92 98 142 114

1064 30-Oct-02 86 42 49 74 63

1065 30-Oct-02 85 92 117 77 93

1066 12-Mar-03 91.4 101.6 77 75.6 86

1067 11-Mar-03 1033 1070 506 -- 870

1068 19-Jun-03 717 542 162 -- 474

1069 15-Jul-03 2137 1230 1203 1217 1447

1074 07-Aug-03 859 787 530 810 747

1075 08-Nov-01 1760 1050 1080 1500 1348

1076 15-Oct-01 982 541 791 444 690

1079 02-Nov-01 16300 2800 11300 6290 9173

1080 08-Nov-01 2110 6090 606 680 2372

1081 02-Nov-01 5260 10000 8750 6390 7600

1082 11-Apr-03 100 133 -- -- 117

1084 02-Nov-01 5680 1580 4460 1160 3220

1086 08-Nov-01 606 -- -- -- 606

1088 01-Apr-04 935 814 781 715 811

1090 22-Jul-04 -- -- -- 632 632

a

 Data were obtained from the EPA Region 7 (2006).

b

 A value qualified with an "ND" represents a non-detect. The value presented is the detection limit. 

For the purpose of calculating the property average, one-half the detection limit will be used as the value for non-detects.

c

 "--" indicates that no sample was collected for that quadrant.

d

 Not provided by EPA Region 7. Averages were calculated by ICF. 

ICF International A-30 DRAFT – December 2006
Appendix A

RESULTS (mg/kg) b

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

141 17-Jun-02 944 523 1170 587 806

142 16-Jun-03 157 215 212 237 205

143 16-Jun-03 197 265 207 264 233

145 03-Apr-02 880 598 445 493 604

146 19-May-03 206 146 270 309 233

147 03-Apr-02 368 349 201 247 291

148 21-May-02 193 296 208 290 247

149 16-Apr-02 1370 612 462 308 688

150 16-Dec-02 198 225 -- 260 228

151 14-Jan-02 281 463 483 279 377

153 15-Jun-04 280 295 218 127 230

154 17-Jan-02 1550 1457 764 786 1139

155 03-Jun-03 109 288 283 378 265

156 10-Dec-02 540 332 195 505 393

157 08-Jul-02 778 895 876 353 726

158 19-Jan-02 675 288 455 539 489

159 27-Jun-02 280 193 217 196 222

160 26-Jun-02 398 216 188 232 259

161 28-Jun-02 490 1297 502 534 706

162 12-Jul-02 2630 2137 1400 766 1733

163 13-May-02 1898 2946 2078 1688 2153

172 21-Oct-02 466 189 769 1010 609

175 28-Mar-02 549 104 391 601 411

176 22-Jan-02 1217 687 1018 633 889

177 13-Nov-02 690 1001 1021 860 893

178 27-Nov-02 307 153 71 48 145

179 05-Nov-01 334 397 447 254 358

180 03-Jun-02 572 240 285 288 346

181 20-Nov-01 907 401 771 603 671

182 14-Dec-01 1347 1273 911 697 1057

183 09-Nov-01 560 834 659 562 654

184 07-Feb-02 716 167 475 321 420

185 25-Apr-02 125 208 127 123 146

191 10-Mar-04 -- -- 500 129 315

196 07-Dec-01 643 981 760 243 657

197 09-Jan-02 872 825 680 847 806

200 27-Feb-02 155 -- 311 -- 233

207 11-Jan-02 978 890 485 648 750

208 07-Oct-02 499 714 490 1057 690

211 07-Oct-03 794 857 693 672 754

212 23-Jan-02 -- -- -- 568 568

213 29-Aug-02 567 684 457 645 588

214 05-Mar-02 564 517 1076 496 663

215 22-Aug-03 647 386 487 762 571

216 23-Mar-04 358 661 400 249 417

217 11-Apr-03 627 473 553 271 481

218 16-Sep-03 473 300 294 445 378

220 19-Aug-03 451 475 592 394 478

222 15-Mar-02 139 85 152 166 136

225 02-Jun-04 104 110 286 186 172

226 20-May-02 -- -- -- 155 155

230 15-Feb-02 -- 119 190 -- 155

231 21-Mar-02 203 415 429 281 332

Exhibit A-5. Post-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

Pilot Analysis 

ID Sampling Date

Property 

Average 

(mg/kg) c

ICF International A-31 DRAFT – December 2006
Appendix A

RESULTS (mg/kg) b

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Exhibit A-5. Post-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

Pilot Analysis 

ID Sampling Date

Property 

Average 

(mg/kg) c

232 25-Jun-02 520 840 946 275 645

233 13-Feb-02 578 238 357 285 365

234 13-Nov-02 74 669 369 254 342

235 06-Aug-03 440 532 701 485 540

237 21-Aug-03 454 551 589 641 559

238 17-Oct-02 2693 -- 1095 1100 1629

239 04-Mar-02 1400 690 976 1487 1138

240 15-Apr-02 488 451 798 220 489

241 07-May-04 342 270 -- -- 306

242 23-Aug-04 49 58 168 271 137

246 12-Aug-04 261 258 -- 336 285

251 26-Aug-02 678 813 793 246 633

253 17-Dec-03 599 652 411 563 556

254 16-Sep-03 178 668 557 400 451

255 16-Sep-03 922 463 446 543 594

256 19-Sep-03 536 1040 679 1663 980

257 17-Oct-01 523 660 294 333 453

258 26-Sep-03 907 972 976 689 886

259 29-Aug-02 615 376 527 656 544

260 16-Oct-03 292 1143 705 213 588

261 11-Mar-02 246 244 721 849 515

262 16-Jan-02 395 1110 913 822 810

263 15-Oct-01 1197 497 603 1243 885

264 18-Sep-03 790 345 1097 860 773

265 28-Jan-02 1083 939 694 571 822

266 02-Oct-03 1563 653 871 747 959

267 22-Oct-03 1620 1830 1123 1280 1463

268 26-Sep-03 1087 463 922 842 829

269 07-Oct-03 1087 1026 940 702 939

272 16-Jan-04 248 444 432 450 394

273 14-Mar-02 -- -- 165 -- 165

277 01-Apr-04 205 251 -- 181 212

279 19-May-03 116 203 252 321 223

280 14-Jul-04 221 165 264 269 230

282 19-Jun-02 1640 3900 1270 1227 2009

283 21-Jun-02 1487 356 597 605 761

284 15-Mar-04 355 474 209 296 334

285 15-Mar-04 355 474 209 296 334

287 15-May-02 1990 1815 1550 1432 1697

295 18-Jul-02 1900 2953 1093 895 1710

299 24-Jul-02 -- 2930 850 195 1325

300 09-Aug-02 1260 1150 310 1033 938

301 18-Jul-02 239 162 235 210 212

302 07-Nov-01 232 270 64 136 176

303 15-Mar-04 660 277 -- 214 384

304 08-Apr-04 326 538 -- -- 432

306 14-Oct-02 1290 492 192 223 549

308 15-Aug-03 1011 532 784 444 693

311 10-Aug-04 568 272 417 291 387

314 28-Mar-02 575 430 -- -- 503

316 06-May-04 471 444 129 536 395

319 20-Apr-04 927 551 -- -- 739

320 04-May-04 727 811 -- -- 769

ICF International A-32 DRAFT – December 2006
Appendix A

RESULTS (mg/kg) b

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Exhibit A-5. Post-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

Pilot Analysis 

ID Sampling Date

Property 

Average 

(mg/kg) c

321 01-Apr-02 402 604 645 1107 690

323 26-Sep-02 1536 1540 556 334 992

324 19-Aug-02 111 539 394 317 340

325 09-Apr-04 2757 -- -- -- 2757

326 07-Jun-02 1340 1313 884 1253 1198

327 07-Jun-02 921 1011 2223 373 1132

328 06-Jun-02 2047 648 1663 756 1279

330 24-Jan-02 220 195 146 234 199

331 24-Jan-02 416 731 724 360 558

337 01-Jul-03 623 833 509 467 608

339 08-Feb-02 147 259 124 80 153

340 17-Jan-02 823 1277 944 -- 1015

341 21-Nov-02 371 1530 310 565 694

344 01-Apr-02 958 -- 1058 6177 2731

347 20-Dec-01 -- 113 88 -- 101

353 18-Oct-02 100 210 152 317 195

354 23-Feb-04 -- 625 147 411 394

355 08-Feb-02 -- 130 193 179 167

357 30-Apr-04 291 393 369 262 329

358 30-Apr-04 369 490 -- 576 478

360 04-May-04 240 142 335 -- 239

361 22-Apr-04 629 233 568 -- 477

363 30-Jun-04 331 596 482 -- 470

364 02-Jul-04 393 517 563 -- 491

365 08-Jun-04 331 684 173 426 404

371 09-Oct-02 96 241 84 60 120

384 25-Mar-04 -- -- 544 153 349

385 20-Dec-01 -- 60 -- 79 70

386 20-Feb-04 1274 837 1267 1072 1113

387 27-Feb-04 1253 1001 838 -- 1031

388 22-Aug-02 292 123 267 425 277

389 07-Mar-02 304 324 239 254 280

390 04-Aug-03 684 1167 519 530 725

391 29-Jan-02 706 709 1220 752 847

392 08-Nov-02 401 187 191 376 289

395 07-Mar-02 344 435 550 449 445

396 11-Sep-03 401 687 792 317 549

398 18-Feb-02 -- -- -- 160 160

400 21-May-04 155 210 -- 174 180

403 28-Feb-02 445 209 149 376 295

404 19-Jul-02 1113 408 -- -- 761

405 29-Jul-03 356 885 589 341 543

406 19-Jul-02 229 -- -- -- 229

407 22-Feb-02 318 312 -- -- 315

408 03-Jul-02 339 164 320 308 283

410 10-Apr-02 653 862 1490 532 884

411 15-Aug-03 632 564 564 353 528

412 13-Aug-03 417 442 719 456 509

413 29-Jan-02 382 546 267 343 385

416 12-Apr-04 398 2000 -- -- 1199

418 17-Jun-02 186 154 -- -- 170

419 17-Jun-02 -- 263 -- 169 216

422 04-May-04 97 163 -- 108 123

ICF International A-33 DRAFT – December 2006
Appendix A

RESULTS (mg/kg) b

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Exhibit A-5. Post-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

Pilot Analysis 

ID Sampling Date

Property 

Average 

(mg/kg) c

425 21-Feb-02 287 285 112 146 208

426 18-Jan-02 1180 1913 987 710 1198

428 29-Jul-03 525 148 159 237 267

430 30-Apr-03 704 469 282 286 435

431 10-Dec-02 478 1527 114 -- 706

432 02-Jun-03 118 234 220 -- 191

433 20-Jun-02 64 532 1423 4100 1530

435 10-Jul-02 2253 592 1807 835 1372

436 10-Jul-02 872 3163 -- -- 2018

440 09-Aug-02 880 328 1380 1650 1060

442 16-Feb-04 859 111 768 608 587

444 18-Feb-02 224 321 488 294 332

445 27-Apr-04 568 365 820 942 674

446 29-Aug-02 1372 1073 596 884 981

447 13-Mar-02 178 222 -- 89 163

448 20-Dec-02 315 616 366 165 366

449 27-Apr-04 162 304 227 258 238

450 13-May-02 -- 130 176 163 156

451 14-Apr-04 266 209 235 222 233

454 13-Feb-02 274 191 206 63 184

456 18-Aug-04 184 123 212 175 174

458 29-Apr-04 -- -- 228 170 199

468 22-Apr-04 264 238 323 -- 275

470 29-Jul-04 1550 439 -- 305 765

477 23-Oct-02 1070 733 1210 2233 1312

484 16-Jan-02 395 1110 913 822 810

485 22-Jul-04 628 713 961 688 748

486 24-Sep-03 734 963 779 791 817

491 02-Jun-04 358 -- 508 395 420

492 30-Apr-04 164 257 446 231 275

493 05-Feb-02 72 159 129 144 126

495 25-Jun-04 303 304 418 328 338

496 04-Jun-03 287 279 -- 204 257

497 22-Aug-02 148 60 429 -- 212

498 09-Aug-02 1042 686 608 482 705

500 18-Feb-04 -- -- 310 -- 310

501 23-Jan-04 1930 675 1180 811 1149

503 25-Feb-04 1323 797 -- -- 1060

504 13-Jun-02 353 177 83 174 197

511 03-Apr-02 863 1773 204 209 762

512 15-Nov-01 688 752 777 567 696

513 15-Nov-01 736 824 743 245 637

514 24-Jan-02 209 605 233 840 472

517 06-May-04 604 584 471 439 525

518 10-Jun-04 380 493 313 602 447

520 23-Feb-04 224 -- -- -- 224

526 16-Jul-02 1007 891 1117 944 990

528 03-Aug-04 -- -- 130 -- 130

531 11-Jan-02 567 -- -- -- 567

532 10-Mar-04 481 1840 114 244 670

535 05-May-03 274 148 283 118 206

540 10-Sep-03 307 502 1018 568 599

542 13-Jan-04 762 357 426 318 466

ICF International A-34 DRAFT – December 2006
Appendix A

RESULTS (mg/kg) b

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Exhibit A-5. Post-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

Pilot Analysis 

ID Sampling Date

Property 

Average 

(mg/kg) c

544 08-May-03 479 223 681 -- 461

557 27-Aug-03 878 789 467 523 664

558 15-Feb-02 53 -- -- 90 72

564 11-Feb-02 57 335 114 55 140

573 30-Oct-01 273 236 214 202 231

574 09-Oct-01 614 1057 1363 507 885

575 21-Sep-01 1670 1947 186 905 1177

576 26-Sep-01 1160 654 512 619 736

577 30-Sep-02 1523 1187 469 594 943

579 02-Oct-01 1180 937 343 382 711

580 17-Oct-02 2693 -- 1095 1100 1629

581 12-Mar-02 731 403 90 192 354

584 23-Feb-04 436 1027 153 -- 539

585 03-Dec-03 371 669 632 574 562

588 11-Feb-02 202 159 -- -- 181

593 11-Feb-02 -- 123 -- -- 123

596 20-Feb-04 796 235 -- -- 516

597 15-Apr-03 1257 854 618 893 906

600 09-Aug-02 264 866 -- -- 565

601 22-Jul-02 1333 445 848 2010 1159

604 13-Oct-03 809 380 719 680 647

605 03-Aug-04 378 -- -- -- 378

606 03-Aug-04 -- 333 -- -- 333

608 06-Mar-02 847 372 764 882 716

609 24-Jun-04 435 402 827 -- 555

612 07-Mar-02 304 324 239 254 280

613 15-Aug-02 432 476 130 661 425

614 04-Aug-03 1753 432 904 427 879

615 08-Sep-03 641 802 268 548 565

617 17-Oct-02 654 1247 535 781 804

622 11-Feb-02 553 878 -- -- 716

625 21-Mar-02 182 434 425 651 423

626 29-Jan-02 220 217 172 221 208

627 28-Jan-02 989 511 192 2177 967

628 07-Aug-03 536 288 238 440 376

629 28-Mar-02 506 351 248 219 331

632 06-Apr-04 100 -- 91 155 115

635 21-May-03 182 341 -- -- 262

636 01-Jul-02 168 -- 92 154 138

637 19-Dec-02 245 277 1497 320 585

642 20-Jun-03 395 881 739 425 610

644 29-Jul-03 338 399 152 272 290

655 08-Jun-04 623 473 975 769 710

657 06-May-04 151 -- 279 228 219

658 16-Aug-04 70 220 243 -- 178

660 05-Sep-03 126 165 297 149 184

663 11-Mar-02 -- 102 244 218 188

664 15-Apr-04 431 420 325 305 370

668 15-Aug-03 716 753 606 409 621

670 12-Apr-02 388 492 519 372 443

672 12-Dec-02 623 779 289 375 517

674 01-Oct-01 627 854 1413 -- 965

676 19-Dec-02 589 277 273 771 478

ICF International A-35 DRAFT – December 2006
Appendix A

RESULTS (mg/kg) b

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Exhibit A-5. Post-Excavation Soil Sampling Results for Pb - Primary Pb Smelter a

Pilot Analysis 

ID Sampling Date

Property 

Average 

(mg/kg) c

677 28-Jun-02 922 605 1253 2840 1405

678 28-Jun-02 1247 897 1025 -- 1056

681 26-Apr-04 343 214 381 377 329

684 17-Jul-03 63 388 209 193 213

688 14-May-03 458 703 560 618 585

692 13-Oct-03 1147 930 -- -- 1039

693 08-Oct-02 1004 802 1683 1513 1251

699 13-May-02 1898 2800 2055 1688 2110

711 02-Oct-02 566 533 427 301 457

714 08-Sep-03 1010 307 740 363 605

718 03-Aug-04 628 -- -- -- 628

725 09-Aug-04 669 810 779 782 760

726 15-Oct-02 402 300 429 496 407

729 14-Mar-02 192 237 -- 131 187

795 11-Jul-02 1273 626 1207 1293 1100

820 06-May-04 135 186 -- -- 161

821 23-Dec-02 180 -- -- -- 180

832 16-Jan-03 -- -- 77 101 89

847 09-Jan-03 -- -- -- 76 76

853 13-May-04 84 146 -- -- 115

889 09-Jan-03 -- 419 -- -- 419

996 10-Jan-03 -- 91 -- -- 91

1074 22-Aug-03 317 307 635 650 477

1075 15-Aug-03 575 607 489 476 537

1076 15-Aug-03 433 576 723 -- 577

1079 30-May-02 81 95 -- -- 88

1080 26-Sep-02 -- 514 -- -- 514

1081 22-May-02 361 109 741 768 495

1083 11-Jul-03 102 685 309 194 323

1084 26-Jul-02 856 2150 462 -- 1156

1087 05-Apr-04 1723 843 667 863 1024

1088 19-Apr-04 380 197 263 295 284

1090 03-Aug-04 -- -- -- 463 463

a

 Data were obtained from EPA Region 7 (2006).

b

 "--" indicates that no sample was collected for that quadrant.

c

 Not provided by EPA Region 7. Averages were calculated by ICF. 

ICF International A-36 DRAFT – December 2006
Appendix A

184 16-Apr-02 62 69 58 ND 57 ND

184 21-May-02 54 67 61 49 ND

184 24-Jun-02 92 69 67 48 ND

184 23-Jul-02 48 48 ND 58 49 ND

184 23-Aug-02 86 60 47 ND 50

579 16-Apr-02 109 125 105 79

579 21-May-02 95 101 75 55

579 21-Jun-02 92 92 137 109

579 23-Jul-02 93 87 67 61

579 22-Aug-02 80 157 83 100

579 23-Sep-02 69 92 67 66

151 11-Feb-02 67 ND 84 65 ND 63 ND

151 14-Mar-02 56 60 ND 75 56 ND

151 16-Apr-02 58 ND 62 ND 60 ND 64

151 22-May-02 51 ND 50 ND 54 50 ND

151 24-Jun-02 54 ND 64 58 49 ND

151 22-Jul-02 56 54 66 57

151 23-Aug-02 62 58 50 47 ND

151 25-Sep-02 64 52 ND 64 59

151 07-Nov-02 60 63 41 55

151 10-Dec-02 50 49 53 53

151 15-Jan-03 53 ND 53 ND 61 55

151 12-Mar-03 53 48 57 57

151 20-Jun-03 142 59 49 ND 70

151 22-Sep-03 74 127 70 61

151 22-Dec-03 49.7 52.8 37.5 43.5

151 22-Mar-04 53 ND 92 85.9 83.6

151 21-Jun-04 67 75.2 50.8 67.6

151 23-Sep-04 96.8 100.3 38.2 60

151 16-Dec-04 43 ND 69.8 51.4 58.8

151 28-Mar-05 127 146 85 86

151 07-Jul-05 83.6 106.1 79 85

151 03-Oct-05 81 83 67 139

151 02-May-06 59 83 67 101

493 17-Apr-02 47 ND 53 ND 49 ND 51 ND

493 21-May-02 48 ND 60 44 ND 45 ND

493 24-Jun-02 53 ND 63 60 51 ND

493 24-Jul-02 45 ND 46 ND 41 ND 41 ND

493 22-Aug-02 45 ND 38 ND 38 55

493 25-Sep-02 45 ND 58 45 ND 42 ND

493 07-Nov-02 49 54 ND 57 ND 60

493 09-Dec-02 51 ND 50 ND 53 ND 51

493 21-Jan-03 72 46 ND 45 50 ND

493 14-Mar-03 37 ND 43 47 53

340 06-Feb-02 59 ND 58 ND 61 55 ND

340 14-Mar-02 74 56 ND 82 69

340 16-Apr-02 53 ND 66 59 397

340 22-May-02 45 ND 47 ND 54 ND 48

340 24-Jun-02 54 54 ND 55 62 ND

340 24-Jul-02 54 47 ND 68 51

Exhibit A-6. Recontamination Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot Analysis 

ID Sampling Date

ICF International A-37 DRAFT – December 2006
Appendix A

Exhibit A-6. Recontamination Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot Analysis 

ID Sampling Date

340 26-Aug-02 49 ND 47 80 66

340 24-Sep-02 48 ND 53 65 65

340 07-Nov-02 44 ND 50 ND 56 99

340 10-Dec-02 63 69 67 111

340 17-Mar-03 74 58 80 126

340 23-Jun-03 63 62 101 106

340 23-Sep-03 117 96 105 91

340 22-Dec-03 66 55 119 124

340 22-Mar-04 67.4 91.9 199 91.7

340 22-Jun-04 77.1 78.8 153 163

340 23-Sep-04 134.7 116 141.6 324

340 16-Dec-04 107.1 128.9 163.3 223

340 29-Mar-05 97 161 107 155

340 08-Jul-05 214 97 146 156

340 03-Oct-05 187 172 258 302

340 02-May-06 161 261 201 300

197 11-Feb-02 73 62 ND 63 ND 69 ND

197 14-Mar-02 97 74 66 ND 65

197 17-Apr-02 96 51 64 ND 48 ND

197 21-May-02 100 60 54 48 ND

197 24-Jun-02 74 95 65 172

197 22-Jul-02 183 61 75 51 ND

197 23-Aug-02 89 62 60 55

197 24-Sep-02 164 61 155 53

197 07-Nov-02 130 81 208 123

197 10-Dec-02 281 127 302 172

197 17-Mar-03 78 103 179 82

197 23-Jun-03 76 133 69 67

197 23-Sep-03 104 122 130 66

197 22-Dec-03 81 131 184 105

197 22-Mar-04 120 188 363 108

197 21-Jun-04 132 152.7 124 76.7

197 23-Sep-04 145.4 261.7 332.8 124

197 16-Dec-04 201.3 63.7 130.1 69.2

197 30-Mar-05 283 235 145 112

197 07-Jul-05 143 252 209 91

197 04-Oct-05 186 182 145 130

197 02-May-06 148 205 156 181

531 17-Apr-02 63 ND 65 ND 67 ND 57 ND

531 22-May-02 54 ND 58 56 ND 54 ND

531 24-Jun-02 50 ND 50 ND 51 53

531 22-Jul-02 164 80 52 ND 41 ND

531 23-Aug-02 73 53 58 49 ND

531 24-Sep-02 51 65 43 46

531 07-Nov-02 85 50 53 ND 46 ND

531 10-Dec-02 53 44 ND 44 ND 41 ND

531 15-Jan-03 63 56 ND 59 58 ND

531 12-Mar-03 62 94 38 ND 47

531 20-Jun-03 48 67 83 60

531 23-Sep-03 64 60 68 77

ICF International A-38 DRAFT – December 2006
Appendix A

Exhibit A-6. Recontamination Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot Analysis 

ID Sampling Date

531 22-Dec-03 57.6 61.5 41.9 35

531 22-Mar-04 63.8 64.6 56 67.6

531 21-Jun-04 56.1 92.5 55.9 50.6

531 23-Sep-04 192.3 123.3 90.9 67.9

531 16-Dec-04 179.7 131 92.1 72.1

531 28-Mar-05 127 103 67 99

531 07-Jul-05 73 130 128 75

531 04-Oct-05 101 111 57 ND 65

531 02-May-06 47 87 65 46 ND

626 11-Feb-02 65 ND 64 ND 56 ND 71

626 14-Mar-02 55 ND 58 ND 98 69

626 16-Apr-02 60 58 ND 69 ND 56 ND

626 20-May-02 52 ND 65 51 47 ND

626 24-Jun-02 74 48 ND 49 ND 51 ND

626 23-Jul-02 47 41 ND 43 40 ND

626 23-Aug-02 45 ND 45 ND 48 41 ND

626 24-Sep-02 45 ND 45 ND 59 49

626 30-Oct-02 43 ND 50 ND 40 ND 48 ND

626 10-Dec-02 43 ND 50 50 49 ND

626 15-Jan-03 52 48 ND 50 53

626 17-Mar-03 60 53 ND 58 ND 45 ND

212 20-May-02 61 49 ND 90 116

212 21-Jun-02 77 323 103 66

212 23-Jul-02 56 141 127 117

212 22-Aug-02 54 75 116 116

212 23-Sep-02 53 57 113 88

212 01-Nov-02 65 63 101 88

212 12-Dec-02 78 77 84 76

212 14-Mar-03 66 122 88 121

212 23-Jun-03 112 61 156 115

212 22-Sep-03 131 95 242 145

212 22-Dec-03 87 122 100 147

212 22-Mar-04 56.6 69.7 187 77 ND

212 21-Jun-04 131 93.6 175 150

212 23-Sep-04 88.5 201.7 696.3 235.7

212 16-Dec-04 87.2 117 406.3 153

212 29-Mar-05 99 94 210 119

212 07-Jul-05 147 178 461 215

212 04-Oct-05 98 157 412 214

212 01-May-06 109 185 271 229

454 17-Apr-02 52 ND 53 ND 51 ND 50 ND

454 20-May-02 48 ND 44 ND 50 ND 46 ND

454 24-Jun-02 95 42 ND 49 ND 49 ND

454 24-Jul-02 50 ND 40 ND 48 ND 57

454 22-Aug-02 46 49 ND 45 ND 46 ND

454 25-Sep-02 45 ND 46 ND 46 ND 48 ND

454 07-Nov-02 56 52 ND 43 ND 52 ND

454 09-Dec-02 53 ND 42 ND 52 ND 49 ND

454 13-Jan-03 47 53 59 54

454 14-Mar-03 43 34 ND 39 38 ND

ICF International A-39 DRAFT – December 2006
Appendix A

Exhibit A-6. Recontamination Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot Analysis 

ID Sampling Date

239 20-May-02 89 ND 63 54 ND 71

239 25-Jun-02 284 51 44 ND 48

239 23-Jul-02 52 50 42 ND 43 ND

239 26-Aug-02 208 87 45 ND 89

239 23-Sep-02 254 64 48 50

239 07-Nov-02 159 55 56 63 ND

239 10-Dec-02 160 104 70 63

239 17-Mar-03 104 93 59 52

444 16-Apr-02 58 ND 65 55 ND 60 ND

444 21-May-02 44 ND 50 ND 49 50 ND

444 25-Jun-02 118 56 47 ND 45 ND

444 24-Jul-02 61 51 62 69

444 23-Aug-02 56 49 ND 47 98

444 25-Sep-02 133 ND 130 ND 137 ND 119 ND

444 07-Nov-02 50 ND 54 ND 52 ND 95

444 12-Dec-02 47 ND 52 58 54

444 20-Jan-03 57 48 79 63

444 14-Mar-03 76 47 57 62

444 23-Jun-03 3187 43 ND 84 131

444 22-Sep-03 60 46 51 83

444 22-Dec-03 513 57.2 54 107

444 22-Mar-04 256 62 74.5 55.4

444 21-Jun-04 128 51.4 ND 57.4 81

444 23-Sep-04 160.3 237.7 196.7 209

444 16-Dec-04 203.7 280.5 96 259.3

444 28-Mar-05 123 123 109 186

674 31-May-02 99 92 -- 88

674 25-Jun-02 109 63 83 85

674 23-Jul-02 62 136 99 77

674 23-Aug-02 95 98 -- 90

674 25-Sep-02 140 138 -- 127 ND

674 07-Nov-02 137 191 -- 178

674 12-Dec-02 183 231 -- 177

674 15-Jan-03 201 166 -- 133

674 14-Mar-03 205 104 -- 175

674 23-Jun-03 175 118 -- 134

263 16-Sep-02 74 44 ND 50 93

263 01-Nov-02 63 49 ND 58 79

263 09-Dec-02 73 46 45 44 ND

263 17-Mar-03 65 50 ND 81 63

263 23-Jun-03 58 57 68 60

581 16-Sep-02 67 69 134 63

581 01-Nov-02 55 ND 69 55 ND 44 ND

581 09-Dec-02 54 55 65 67

581 25-Jul-05 78 113 134 107

581 04-Oct-05 65 132 109 103

581 02-May-06 80 122 171 119

240 16-Sep-02 90 61 ND 91 ND 114 ND

240 30-Oct-02 99 78 ND 80 ND 81 ND

240 10-Dec-02 78 ND 76 ND 81 ND 84 ND

ICF International A-40 DRAFT – December 2006
Appendix A

Exhibit A-6. Recontamination Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot Analysis 

ID Sampling Date

240 14-Mar-03 79 ND 80 ND 77 145

240 23-Jun-03 128 100 ND 98 ND 98 ND

240 23-Sep-03 84 76 ND 122 129

240 22-Dec-03 79.4 121.5 62.5 165.5

240 22-Mar-04 110 139.5 85.4 117.5

240 21-Jun-04 107.3 ND 147 91.5 ND 131.5

240 23-Sep-04 93.7 177 91.3 196.5

240 16-Dec-04 103.4 ND 179 97 193.5

240 28-Mar-05 106 163 80 ND 184

240 07-Jul-05 242 232 138 266

240 04-Oct-05 125 224 115 275

240 01-May-06 124 177 120 157

257 11-Feb-02 52 54 62 87

257 14-Mar-02 71 70 79 75

257 15-Apr-02 63 60 71 74

257 21-May-02 122 76 69 57

257 21-Jun-02 79 76 73 99

257 23-Jul-02 54 50 57 54

257 22-Aug-02 60 54 65 46 ND

257 23-Sep-02 81 103 66 59

257 01-Nov-02 81 77 88 64

257 12-Dec-02 61 58 179 120

257 14-Mar-03 61 60 63 57

257 23-Jun-03 98 56 120 74

257 23-Sep-03 133 151 72 85

257 22-Dec-03 75 68 76 68

257 22-Mar-04 89 73 92 68 ND

257 21-Jun-04 101.6 123 107.4 70.7

257 23-Sep-04 107.5 222 126 136

257 16-Dec-04 162.3 128.7 78.9 79.3

257 29-Mar-05 90 143 127 97

576 06-Feb-02 71 67 55 120

576 14-Mar-02 68 62 74 69 ND

576 17-Apr-02 64 63 69 69

576 21-May-02 74 77 76 68

576 25-Jun-02 140 76 55 63

576 23-Jul-02 69 44 ND 53 65

576 23-Aug-02 55 63 74 65

576 25-Sep-02 78 79 75 59

576 07-Nov-02 104 54 75 62

576 12-Dec-02 111 62 76 60

576 15-Jan-03 63 71 60 79

576 14-Mar-03 100 68 85 94

576 23-Jun-03 68 53 81 57

576 22-Sep-03 91 45 94 101

576 22-Dec-03 64.8 56.6 85.7 78

576 22-Mar-04 83.7 53 ND 71.9 78.9

576 21-Jun-04 85.7 69.3 78.5 76.5

576 23-Sep-04 127.8 112.4 101 91.3

576 16-Dec-04 85.9 99.8 80.9 85.8

ICF International A-41 DRAFT – December 2006
Appendix A

Exhibit A-6. Recontamination Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot Analysis 

ID Sampling Date

576 28-Mar-05 121 120 76.7 89

576 07-Jul-05 192 169 145 163

576 03-Oct-05 147 141 105 137

576 02-May-06 97 71 92 127

207 06-Feb-02 53 ND 58 ND 67 ND 82

207 14-Mar-02 177 ND 160 ND 230 ND 150 ND

207 16-Apr-02 59 67 59 93

207 22-May-02 54 ND 52 ND 53 ND 95

207 21-Jun-02 69 54 52 ND 50 ND

207 23-Jul-02 65 52 52 45 ND

207 22-Aug-02 46 ND 75 53 68

207 23-Sep-02 70 59 52 ND 51

207 23-Oct-02 51 54 ND 55 56 ND

207 09-Dec-02 50 51 ND 46 ND 56

207 14-Mar-03 65 49 48 47

207 23-Jun-03 50 46 44 74

207 22-Sep-03 110 106 40 107

207 22-Dec-03 87 51.6 45.1 68

207 22-Mar-04 63.6 69.2 63.3 157.7

207 21-Jun-04 61.7 70.2 ND 80.9 70.2

207 23-Sep-04 111.3 104 179 169

207 16-Dec-04 126 83.3 75.1 100.4

207 29-Mar-05 120 123 65 ND 133

207 14-Jul-05 100 100 75 115

207 04-Oct-05 69 90 84 107

207 01-May-06 98 166 83 137

347 15-Feb-02 61 ND 62 ND 68 59

347 14-Mar-02 160 58 ND 59 64 ND

347 16-Apr-02 53 ND 59 ND 57 ND 56 ND

347 20-May-02 107 58 57 56

347 25-Jun-02 98 56 63 55

347 24-Jul-02 55 62 66 54

347 26-Aug-02 60 57 56 121

347 24-Sep-02 67 71 69 138

347 07-Nov-02 86 90 126 61

347 10-Dec-02 74 84 125 113

347 17-Mar-03 121 164 152 140

347 23-Jun-03 150 88 179 137

347 23-Sep-03 245 210 212 132

347 22-Dec-03 224 128.5 181.5 295

347 22-Mar-04 175 100 311 216

347 21-Jun-04 138 76.1 170.3 233

347 23-Sep-04 268 404.3 338 423.3

347 16-Dec-04 163 358.3 331.7 290.3

347 30-Mar-05 239 426 207 177

347 07-Jul-05 298 376 235 341

347 04-Oct-05 154 271 357 447

347 01-May-06 250 382 264 515

176 13-Feb-02 116 72 ND 67 ND 73 ND

176 14-Mar-02 78 67 69 79

ICF International A-42 DRAFT – December 2006
Appendix A

Exhibit A-6. Recontamination Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot Analysis 

ID Sampling Date

176 17-Apr-02 59 81 62 ND 59 ND

176 22-May-02 45 ND 57 50 ND 54

176 25-Jun-02 53 ND 98 55 53

176 24-Jul-02 60 140 56 54

176 23-Aug-02 70 102 50 42

176 25-Sep-02 73 114 75 66

176 07-Nov-02 60 ND 50 69 54

176 12-Dec-02 56 88 59 70

176 15-Jan-03 50 ND 97 61 67

176 23-Mar-04 152 244 121 134

176 21-Jun-04 206.7 103.7 94.7 110.7

176 23-Sep-04 674 244.7 169.7 170.7

176 16-Dec-04 139.7 205.3 137.7 151.6

176 28-Mar-05 241 189 136 150

176 08-Jul-05 233 360 136 193

176 03-Oct-05 201 306 301 231

512 06-Feb-02 51 86 46 ND 64 ND

512 14-Mar-02 135 80 78 61 ND

512 17-Apr-02 60 ND 81 61 ND 65

512 22-May-02 58 158 61 73

512 25-Jun-02 60 88 52 57

512 23-Jul-02 67 127 51 53

512 26-Aug-02 79 154 59 61

512 24-Sep-02 71 106 70 57

512 07-Nov-02 99 131 59 69

512 10-Dec-02 148 234 82 92

512 23-Jun-03 114 260 95 85

512 23-Sep-03 130 281 110 182

512 22-Dec-03 128 290 150 88

512 22-Mar-04 116 315 191 94.6

512 22-Jun-04 112 211.7 84.8 79.4

512 23-Sep-04 249.3 328.7 202 235

512 16-Dec-04 102.4 284 75 202.8

512 30-Mar-05 196 295 188 167

512 08-Jul-05 184 247 111 180

512 04-Oct-05 147 259 170 111

512 02-May-06 275 351 189 187

398 08-Oct-02 -- -- -- 51 ND

398 31-Oct-02 -- -- -- 38 ND

398 09-Dec-02 -- -- -- 58

398 13-Jan-03 -- -- -- 58

181 07-Nov-02 193 82 58 73

181 10-Dec-02 117 64 53 60

181 17-Mar-03 120 60 99 73

181 23-Jun-03 141 78 77 57 ND

181 23-Sep-03 163 65 87 131

181 22-Dec-03 96 72.9 74.5 76.2

181 22-Mar-04 164 80 92 89.9

181 22-Jun-04 237.3 112 101.5 106

181 23-Sep-04 219 141.7 68.2 114.3

ICF International A-43 DRAFT – December 2006
Appendix A

Exhibit A-6. Recontamination Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot Analysis 

ID Sampling Date

181 16-Dec-04 195 141 68.69 162

181 30-Mar-05 177 89 90 136

181 07-Jul-05 140 167 98 113

181 04-Oct-05 196 218 127 205

181 02-May-06 220 281 113 95

328 30-Oct-03 51.7 68.8 -- --

328 22-Dec-03 173 123 -- --

328 22-Mar-04 144 169 -- --

328 22-Jun-04 95.7 137.3 -- --

328 23-Sep-04 212.3 131.5 -- --

328 16-Dec-04 173.3 399 -- --

328 29-Mar-05 196 136 -- --

328 07-Jul-05 255 144 -- --

328 03-Oct-05 236 181 -- --

328 18-May-06 213 248 -- --

684 22-Dec-03 90.3 53 41 38.8

684 22-Mar-04 73.6 60.7 77.5 59.9

684 22-Jun-04 126.4 59.4 ND 75.6 72.4

684 23-Sep-04 88.9 121.3 126 104.8

684 16-Dec-04 144.2 227 147 171.3

684 28-Mar-05 182 171 151 142

684 08-Jul-05 101 118 116 132

684 04-Oct-05 91 126 107 109

684 02-May-06 129 140 169 168

575 22-Dec-03 257 285 181 250

575 22-Mar-04 451 530 280 217

575 21-Jun-04 462 518 208 264

575 23-Sep-04 495 458.7 325 485

575 16-Dec-04 837.8 854.5 367.7 299.3

575 30-Mar-05 551 638 395 296

575 07-Jul-05 1507 528 557 437

575 04-Oct-05 390 266 304 512

575 02-May-06 488 258 258 240

224 28-Mar-05 44 ND 43 ND 49 ND 55 ND

224 07-Jul-05 52 ND 68 54 ND 54 ND

224 03-Oct-05 42 ND 48 ND 50 422

224 02-May-06 39 37 ND 44 ND 94

402 28-Mar-05 76.5 48 -- 50

402 07-Jul-05 57 ND 61 ND -- 60 ND

402 03-Oct-05 62 52 ND -- 47 ND

402 01-May-06 50 ND 48 -- 41 ND

1078 31-Jan-02 405 -- -- --

1078 14-Mar-02 173 ND -- -- --

1078 17-Apr-02 138 -- -- --

1078 21-May-02 107 -- -- --

1078 25-Jun-02 106 -- -- --

1078 24-Jul-02 250 -- -- --

1078 26-Aug-02 102 -- -- --

1078 24-Sep-02 94 -- -- --

1078 07-Nov-02 80 -- -- --

ICF International A-44 DRAFT – December 2006
Appendix A

Exhibit A-6. Recontamination Soil Sampling Results for Pb - Primary Pb Smelter a

RESULTS (mg/kg) b, c

Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4

Pilot Analysis 

ID Sampling Date

1078 10-Dec-02 100 -- -- --

1078 14-Mar-03 154 -- -- --

1078 23-Jun-03 206 -- -- --

1078 23-Sep-03 164 -- -- --

1078 22-Dec-03 106 -- -- --

1078 22-Mar-04 184 -- -- --

1078 21-Jun-04 263.8 -- -- --

1078 23-Sep-04 845.6 -- -- --

1078 16-Dec-04 130.5 -- -- --

1078 28-Mar-05 151 -- -- --

1078 07-Jul-05 209 -- -- --

1078 03-Oct-05 287 -- -- --

1078 01-May-06 277 -- -- --

1079 22-Dec-03 67 121 -- --

1079 22-Mar-04 111.7 105.6 -- --

1079 22-Jun-04 231.3 227.7 -- --

1079 23-Sep-04 362 329.7 -- --

1079 16-Dec-04 275 338.3 -- --

1079 28-Mar-05 338 230 -- --

1079 07-Jul-05 345 164 -- --

1079 03-Oct-05 622 590 -- --

1079 02-May-06 370 1276 -- --

a

 Data were obtained from EPA Region 7 (2006).

c

 "--" indicates that no sample was collected for that quadrant.

b

 A value qualified with a "ND" represents a non-detect. The value presented is the detection limit. For 

the purpose of calculating the property average by year, one-half the detection limit was used as the value 

for non-detects.

ICF International A-45 DRAFT – December 2006
Appendix A

Exhibit A-7. Average Soil Pre-Excavation, Post-Excavation, and Recontamination Pb Results for 31 

Residential Locations within One Mile of the Primary Pb Smelter

Pre-Excavation Post-Excavation

(mg/kg) a (mg/kg) a 2002 2003 2004 2005 2006

151 918 377 47.3 59.8 65.3 97.3 77.5

176 1471 889 62.1 62.5 191.3 223.1

181 1367 671 87.5 90.1 130.8 146.3 177.3

184 3308 420 51.1 -- -- -- --

197 3035 806 93.8 106.9 162 176.1 172.5

207 1039 750 52.2 64.9 96.9 95.7 121

212 355 568 93.1 119.4 180.4 200.3 198.5

224 579 -- -- -- -- 63.4 43.4

239 4155 1138 81.3 77 -- -- --

240 2770 489 50.1 86.2 119.4 175.8 144.5

257 1073 453 73.1 82.3 108.2 114.3 -- 

263 1425 885 54.1 59.6 -- -- --

328 5138 1279 -- 104.1 182.8 191.3 230.5

340 917 1015 59.2 90.2 141.3 171 230.8

347 614 101 69.2 172.4 249.8 294 352.8

398 394 160 34.2 58 -- -- --

402 1740 -- -- -- -- 41.7 31.2

444 1795 332 49.4 244.2 149 135.3 -- 

454 667 184 28.9 41.4 -- -- --

493 466 126 32.5 40.8 -- -- --

512 2013 696 80 159.4 180.2 187.9 250.5

531 618 567 44.6 56.2 91 92.3 55.5

575 -- 1177 -- 243.3 440.8 531.8 311

576 1500 736 70.2 74.8 84.7 133.8 96.8

579 1528 711 91.5 -- -- -- --

581 837 354 60 -- -- 105.1 123

626 604 208 37.1 39.6 -- -- --

674 1850 965 120.8 156.8 -- -- --

684 6857 213 -- 55.8 106.6 128.8 151.5

1078 -- -- 146.9 157.5 356 215.7 277

1079 9173 88 -- 94 247.7 381.5 823

a

 All available pre-excavation and post-excavation results by quadrant are provided in Exhibits A-4 and A-5, respectively.

b

 Soil samples from up to four quadrants were collected each date. The results for the quadrants were first averaged (using 

one-half the detection limit as the value for non-detects) before determining the final overall average by year for each location.

c During the process of summarizing post-excavation and recontamination Pb results for the 31 locations, it was noted that, in 

general, post-excavation sampling results (collected during 2001/2002) were higher than the Pb results for recontamination

samples collected subsequently in 2002 or 2003. This may be due to the fact that post-excavation samples were collected prior

to backfilling the excavated areas with clean soil, but this has yet to be determined.

Averages (mg/kg) b,c Pilot Analysis 

ID

ICF International A-46 DRAFT – December 2006
Appendix A

Pb Loading

Pb 

Concentration

Window Sill Pb 

Loading

Other Wipe Pb 

Loading

(mg/ft2

) (mg/kg) (μg/ft2) (μg/ft2)

184 Recon #01 16-Apr-02 43 3300 1385 120

184 Recon #02 29-May-02 28.4 4350 881 47

184 Recon #03 26-Jun-02 25.7 3364 630 54

184 Recon #04 24-Jul-02 46.6 3874 1257 69

579 Recon #01 16-Apr-02 0.54 370 413 17

579 Recon #02 31-May-02 0.402 383 293 12

579 Recon #03 28-Jun-02 0.986 539 173 16

579 Recon #04 2-Aug-02 0.548 728 201 9

579 Recon #05 26-Aug-02 0.216 826 225 6.2

151 Recon #01 16-Apr-02 2.1 1000 165 66

151 Recon #02 28-May-02 2.09 918 75 22

151 Recon #03 28-Jun-02 0.448 786 38 14

151 Recon #04 22-Jul-02 0.468 895 27 12

151 Recon #05 28-Aug-02 0.322 559 49 13

151 Recon #06 30-Sep-02 0.696 655 36 11

151 Recon #07 23-Oct-02 2.17 710 36 4.4

151 Recon #08 4-Dec-02 0.619 642 14 7.7

151 Recon #09 10-Jan-03 0.471 675 13 6.9

151 Recon #10 26-Feb-03 0.437 612 23 5.3

151 Recon #11 1-Apr-03 0.623 644 26 8.5

151 Recon #12 16-Jul-03 0.487 435 40 4.6

151 Recon #13 15-Oct-03 0.567 394 17 3.3

151 Recon #14 7-Jan-04 0.605 477 6.7 3.8

151 Recon #15 14-Apr-04 -- -- 60 5.1

151 Recon #16 8-Jul-04 -- -- 9.4 3.4

151 Recon #17 8-Oct-04 -- -- 55 3.1

151 Recon #18 10-Jan-05 -- -- 7.5 2.9

151 Recon #19 19-Apr-05 -- -- 28 11

151 Recon #20 5-Jul-05 -- -- 17 5.2

151 Recon #21 7-Oct-05 -- -- 23 6.6

151 Recon #22 24-Apr-06 -- -- 21 7.6

493 Recon #01 17-Apr-02 1.4 600 353 19

493 Recon #02 24-May-02 0.258 695 75 15

493 Recon #03 16-Jul-02 2.38 664 67 18

493 Recon #06 20-Sep-02 0.616 426 32 12

493 Recon #07 24-Oct-02 1.01 629 45 12

493 Recon #08 3-Dec-02 0.523 681 17 11

493 Recon #09 27-Jan-03 2.25 845 31 10

493 Recon #10 25-Feb-03 0.631 313 16 6.1

493 Recon #11 24-Mar-03 1.07 613 28 11

340 Recon #01 17-Apr-02 0.66 2200 352 14

340 Recon #02 30-May-02 2.15 3711 508 24

340 Recon #03 26-Jun-02 0.826 2191 638 19

340 Recon #04 30-Jul-02 0.497 2551 185 22

340 Recon #05 6-Sep-02 0.512 1510 60 6.8

340 Recon #07 14-Nov-02 0.334 900 141 7.3

340 Recon #11 3-Apr-03 0.806 1032 576 16

340 Recon #12 30-Jun-03 0.998 1665 912 8.5

340 Recon #13 17-Oct-03 0.824 1377 156 10

197 Recon #01 22-Apr-02 4.7 1900 264 35

197 Recon #02 4-Jun-02 11.3 2603 109 48

197 Recon #03 18-Jul-02 6.26 1783 105 25

531 Recon #01 22-Apr-02 1.6 950 101 18

Exhibit A-8. Indoor Dust/Wipe Sample Results for Pb - Primary Pb Smelter a

Pilot Analysis ID Round No. Date

Carpet Dust b Wipe

ICF International A-47 DRAFT – December 2006
Appendix A

Pb Loading

Pb 

Concentration

Window Sill Pb 

Loading

Other Wipe Pb 

Loading

(mg/ft2

) (mg/kg) (μg/ft2) (μg/ft2)

Exhibit A-8. Indoor Dust/Wipe Sample Results for Pb - Primary Pb Smelter a

Pilot Analysis ID Round No. Date

Carpet Dust b Wipe

531 Recon #02 30-May-02 1.6 1778 35 15

531 Recon #03 27-Jun-02 1.3 1461 10 7.6

531 Recon #04 25-Jul-02 3.19 2477 10 6.1

531 Recon #05 28-Aug-02 1.67 2409 11 7.8

531 Recon #07 24-Oct-02 1.44 860 16 7.2

531 Recon #10 26-Feb-03 1.46 336 23 21

531 Recon #11 9-Apr-03 1.7 579 52 14

531 Recon #12 23-Jul-03 2 428 15 11

531 Recon #14 7-Jan-04 1.85 639 46 11

531 Recon #15 9-Apr-04 2.24 1208 35 14

531 Recon #16 3-Aug-04 0.811 761 21 8.2

531 Recon #17 8-Nov-04 1.02 400 51 9.2

531 Recon #19 22-Mar-05 2.25 647 15 10

531 Recon #20 5-Jul-05 0.56 137 6.9 8.4

531 Recon #21 5-Oct-05 0.106 122 53 11

531 Recon #22 25-Apr-06 0.168 233 41 6.7

626 Recon #01 23-Apr-02 0.53 290 110 44

626 Recon #02 30-May-02 0.393 457 82 6.1

626 Recon #04 26-Jul-02 0.616 410 129 5.5

626 Recon #07 25-Oct-03 0.349 317 71 4.4

212 Recon #01 30-Apr-02 0.46 610 62 10

212 Recon #02 28-May-02 0.327 557 22 14

212 Recon #04 26-Jul-02 0.332 659 62 3.3

212 Recon #05 4-Sep-02 0.578 734 21 3.2

212 Recon #06 2-Oct-02 0.324 531 9 2.6

212 Recon #07 8-Nov-02 0.316 650 6.3 2.2

212 Recon #08 18-Dec-02 0.332 490 6.2 3.2

212 Recon #09 31-Jan-03 0.451 586 12 3.6

212 Recon #10 25-Feb-03 0.524 671 10 4.4

212 Recon #11 8-Apr-03 0.439 512 24 4.4

212 Recon #12 9-Jul-03 0.395 477 6.9 4

212 Recon #14 7-Jan-04 0.283 455 14 2.3

212 Recon #15 15-Apr-04 0.334 457 16 4.6

212 Recon #17 10-Nov-04 0.229 589 11 6

212 Recon #19 29-Mar-05 0.137 321 9

212 Recon #20 6-Jul-05 0.338 422 6 11

212 Recon #22 25-Apr-06 0.0305 660 22 9.1

454 Recon #01 30-Apr-02 0.22 450 35 8.5

454 Recon #02 3-Jun-02 1.75 1502 33 9.3

454 Recon #03 18-Jul-02 0.22 517 17 8.5

454 Recon #07 28-Oct-02 0.235 526 31 9.2

454 Recon #08 4-Dec-02 0.299 550 28 6.8

454 Recon #09 3-Feb-03 0.0142 247 9 5.9

454 Recon #10 26-Feb-03 0.319 224 16 5.7

239 Recon #01 30-Apr-02 26 3000 405 12

239 Recon #02 28-May-02 22.6 2124 251 18

239 Recon #03 1-Jul-02 25 1944 292 10

239 Recon #04 2-Aug-02 31 2862 85 11

239 Recon #05 27-Aug-02 11.8 1682 56 8.2

444 Recon #01 6-May-02 9.3 2300 905 72

444 Recon #02 7-Jun-02 6.6 2588 1134 41

674 Recon #02 31-May-02 4.62 1669 40 102

674 Recon #03 25-Jun-02 2.15 1394 33 29

ICF International A-48 DRAFT – December 2006
Appendix A

Pb Loading

Pb 

Concentration

Window Sill Pb 

Loading

Other Wipe Pb 

Loading

(mg/ft2

) (mg/kg) (μg/ft2) (μg/ft2)

Exhibit A-8. Indoor Dust/Wipe Sample Results for Pb - Primary Pb Smelter a

Pilot Analysis ID Round No. Date

Carpet Dust b Wipe

674 Recon #04 25-Jul-02 3 1482 25 24

674 Recon #05 27-Aug-02 2.06 1459 15 12

674 Recon #07 22-Oct-02 2.88 1273 11 31

674 Recon #08 3-Dec-02 1.54 1056 20 31

674 Recon #09 3-Jan-03 2.28 1088 16 10

674 Recon #10 21-Feb-03 2.28 742 11 5.4

674 Recon #11 15-Apr-03 2.09 927 18 11

263 Recon #06 17-Sep-02 0.378 1336 176 4

263 Recon #07 24-Oct-02 0.673 1786 31 6.4

263 Recon #08 2-Dec-02 0.649 1619 34 5.1

263 Recon #09 7-Jan-03 0.514 1196 104 4.4

263 Recon #10 24-Feb-03 0.182 745 23 4

263 Recon #11 24-Mar-03 0.635 1119 57 9.5

263 Recon #12 30-Jun-03 1.39 980 95 6.9

581 Recon #06 27-Sep-02 0.489 369 124 43

581 Recon #07 31-Oct-02 1.19 566 99 6.3

581 Recon #08 11-Dec-02 1.05 426 34 6.5

581 Recon #09 8-Jan-03 1.51 376 24 7.5

581 Recon #20 25-Jul-05 0.0201 131 32 5.3

581 Recon #21 3-Oct-05 0.0483 143 41 8.4

581 Recon #22 25-Apr-06 0.108 271 155 7

240 Recon #06 26-Sep-02 4.48 1795 505 26

240 Recon #07 23-Oct-02 5.04 1633 199 19

240 Recon #08 4-Dec-02 3.99 1700 159 21

240 Recon #09 3-Jan-03 3.58 1591 96 18

240 Recon #10 20-Feb-03 13.8 2877 68 15

240 Recon #11 20-Mar-03 8.22 1813 62 20

240 Recon #12 3-Jul-03 2.93 1075 409 15

240 Recon #13 1-Oct-03 1.7 873 188 19

240 Recon #14 7-Jan-04 1.12 929 133 11

240 Recon #15 7-Apr-04 1.45 1064 108 14

240 Recon #16 16-Jul-04 0.95 805 171 13

240 Recon #17 18-Oct-04 3.03 1170 455 8.3

240 Recon #18 10-Jan-05 1.06 735 72 11

240 Recon #19 19-Apr-05 1.08 834 84 20

240 Recon #20 7-Jul-05 0.68 816 599 28

240 Recon #21 5-Oct-05 0.585 766 89 18

240 Recon #22 5-May-06 0.843 1040 502 24

398 Recon #06 7-Oct-02 0.49 354 19 5.2

398 Recon #07 28-Oct-02 0.342 244 17 5.5

398 Recon #08 3-Dec-02 0.95 322 10 3.7

398 Recon #09 7-Jan-03 0.499 470 5.6 2.8

a

 Data were obtained from EPA Region 7 (2006).

b

 "--" indicates that no measurement was taken on that date.

ICF International A-49 DRAFT – December 2006
Appendix A 

Exhibit A-9. Soil and Air Deposition Monitoring Locations 

Around the Primary Pb Smelter 

ICF International A-50 DRAFT – December 2006 
Appendix A

RESULTS (mg/kg) b, c

Round 1 Round 2 Round 3 Round 4

6-Mar-03 40 ND 39 ND 38 ND --

11-Apr-03 58 ND 119 54 ND 63 ND

7-May-03 36 ND 42 ND 47 ND --

6-Jun-03 116 58 ND 52 ND 51 ND

11-Jul-03 79.1 55 ND 67.1 --

11-Aug-03 80.3 82.3 54 ND 97.8

15-Sep-03 57 ND 89.1 78.1 --

15-Oct-03 70.3 51.3 98.9 --

18-Nov-03 90.5 90.2 140 111

17-Dec-03 165 81.4 107 132

19-Jan-04 34.9 80.9 105 52.9

19-Feb-04 186 159 87.8 --

19-Mar-04 81.9 115 136 --

21-Apr-04 95.8 213 177 --

24-May-04 142 37 ND 36 ND --

24-Jun-04 130 51 ND 139 105

27-Aug-04 50.8 70.4 119 --

6-Mar-03 48 ND 31 ND 44 ND 36 ND

11-Apr-03 50 ND 50 ND 51 ND --

7-May-03 35 ND 48 ND 35 ND --

6-Jun-03 56 ND 35 ND 31 ND --

11-Jul-03 53 ND 39 ND 46 ND --

11-Aug-03 59 ND 48 ND 56 ND --

15-Sep-03 35 ND 51 ND 39 ND --

15-Oct-03 33.4 39.9 30 --

17-Nov-03 34 ND 59.4 46.2 --

17-Dec-03 54.4 26 ND 37.3 --

19-Jan-04 38 ND 31 ND 32 ND --

19-Feb-04 64.3 30 35 --

19-Mar-04 43.4 55 42.1 --

21-Apr-04 43.8 48.6 46.1 --

24-May-04 59.3 135 27 ND --

24-Jun-04 52 ND 64.5 37 ND --

27-Aug-04 36.2 137 34.1 --

6-Mar-03 30 ND 38 ND 37 ND --

16-Apr-03 49 ND 46 ND 43 ND --

7-May-03 42 ND 48 ND 53 ND --

6-Jun-03 35 ND 65 ND 56 ND --

11-Jul-03 62 ND 74 ND 59 ND --

11-Aug-03 54 ND 64 ND 63 ND --

15-Sep-03 50 ND 45 ND 47 ND --

15-Oct-03 33 ND 44.3 47.4 --

18-Nov-03 46.5 45.8 37.9 --

17-Dec-03 48.7 58.9 30 ND --

19-Jan-04 63.2 57.7 45 ND --

19-Feb-04 51.1 91 69.9 --

19-Mar-04 47 ND 75.5 53.2 --

21-Apr-04 52.7 49 ND 64.4 --

24-May-04 43 ND 62 94.9 --

24-Jun-04 67 ND 46 ND 84.1 --

27-Aug-04 46.7 36 ND 37.4 --

207

240

Exhibit A-10. Soil Deposition Monitoring Results for Pb - Primary Pb Smelter a

Pilot Analysis 

ID Sampling Date

181

ICF International A-51 DRAFT – December 2006
Appendix A

RESULTS (mg/kg) b, c

Round 1 Round 2 Round 3 Round 4

Exhibit A-10. Soil Deposition Monitoring Results for Pb - Primary Pb Smelter a

Pilot Analysis 

ID Sampling Date

14-Feb-03 25 ND 26 ND 21 ND --

11-Apr-03 60.2 65.5 39 ND --

7-May-03 32 ND 27 ND 29 ND --

6-Jun-03 51 ND 27 ND 48 ND --

11-Jul-03 32 ND 40 ND 30 ND --

11-Aug-03 80.4 47 ND 65.7 43 ND

15-Sep-03 28 ND 30 ND 36 ND --

15-Oct-03 38.4 28.4 92.4 --

17-Nov-03 64.8 105 52.9 --

17-Dec-03 198 119 129 --

19-Jan-04 83.9 90.1 103 --

19-Feb-04 161 106 117 --

19-Mar-04 58.9 30 ND 39.1 --

21-Apr-04 275 190 216 --

24-May-04 155 152 217 --

24-Jun-04 330 402 302 --

27-Aug-04 66.5 278 59.3 289

6-Mar-03 31 ND 32 ND 34 ND --

11-Apr-03 90 ND 47 ND 56 ND --

7-May-03 32 ND 24 ND 53.5 --

6-Jun-03 69 ND 50 ND 48 ND --

11-Jul-03 81 ND 71 ND 39 ND --

11-Aug-03 70 65 ND 49 ND --

15-Sep-03 53 50 ND 56.1 --

15-Oct-03 47.4 29 ND 29 ND --

17-Nov-03 73.6 65.2 59.2 --

17-Dec-03 79.4 62.4 41.9 --

19-Jan-04 58.8 38 ND 36 ND --

19-Feb-04 69.3 83.8 63.9 --

19-Mar-04 84.3 46.1 96.2 --

21-Apr-04 68.4 131 147 --

24-May-04 107 89.4 60.4 --

24-Jun-04 160 71.5 55 ND --

27-Aug-04 119 50 ND 102 --

6-Mar-03 22 ND 23 ND 22 ND --

11-Apr-03 34 ND 46 ND 35 ND --

7-May-03 20 ND 22 ND 28 ND --

6-Jun-03 33 ND 34 ND 29 ND --

11-Jul-03 28 ND 31 ND 26 ND --

11-Aug-03 49 ND 57 ND 44 ND --

15-Sep-03 22 ND 22 ND 34 ND --

15-Oct-03 19 ND 19 ND 21 ND --

17-Nov-03 19 ND 19 ND 20 ND --

17-Dec-03 24 ND 27 ND 26 ND --

19-Jan-04 28 ND 28 ND 31 ND --

19-Feb-04 19 ND 20 ND 20 ND --

19-Mar-04 23 ND 23 ND 52.2 --

21-Apr-04 28 ND 31.8 29.7 --

24-May-04 41.4 24 ND 24 ND --

24-Jun-04 24 ND 29 ND 23 ND --

27-Aug-04 25 ND 26 ND 23 ND --

286

444

531

ICF International A-52 DRAFT – December 2006
Appendix A

RESULTS (mg/kg) b, c

Round 1 Round 2 Round 3 Round 4

Exhibit A-10. Soil Deposition Monitoring Results for Pb - Primary Pb Smelter a

Pilot Analysis 

ID Sampling Date

6-Mar-03 36 ND 40 ND 42 ND --

11-Apr-03 71 ND 42 ND 46 ND --

7-May-03 43 ND 35 ND 40 ND --

6-Jun-03 43 ND 55 ND 47 ND --

11-Jul-03 38 ND 46 ND 50 ND --

11-Aug-03 53 ND 51 ND 44 ND --

15-Sep-03 38 ND 50 ND 40 ND --

15-Oct-03 24 ND 41 ND 35 ND --

17-Nov-03 38.8 32.9 29 ND --

17-Dec-03 60.4 34 ND 35.1 --

19-Jan-04 42 ND 50 ND 45 ND --

19-Feb-04 41 30 ND 49.5 --

19-Mar-04 36 ND 74.6 42 ND --

21-Apr-04 68.4 63.3 36 ND --

24-May-04 62.6 53.6 35.7 --

24-Jun-04 49 ND 42 ND 64.9 --

27-Aug-04 54.4 35.9 28 ND --

7-Jan-03 23 ND 22 ND 26 ND --

14-Feb-03 32 ND 35 ND 28 ND --

11-Apr-03 135 119 102 --

7-May-03 47 37.4 37.8 --

6-Jun-03 115 73.9 133 --

11-Jul-03 205 153 144 --

11-Aug-03 336 622 259 --

15-Sep-03 288 301 294 --

15-Oct-03 330 143 219 228

17-Nov-03 309 218 281 --

17-Dec-03 265 206 176 189

19-Jan-04 188 317 188 --

19-Feb-04 404 271 311 291

19-Mar-04 278 306 434 --

21-Apr-04 602 515 464 --

24-May-04 210 229 360 --

24-Jun-04 279 285 499 279

27-Aug-04 166 143 143 --

7-Mar-03 24 ND 21 ND 21 ND --

11-Apr-03 30 ND 36 ND 39 ND --

7-May-03 22 ND 22 ND 20 ND --

6-Jun-03 22 ND 26 ND 30 ND --

11-Jul-03 33 ND 33 ND 33 ND --

11-Aug-03 32 ND 25 ND 26 ND --

15-Sep-03 26 ND 28 ND 28 ND --

15-Oct-03 17 ND 16 ND 17 ND --

18-Nov-03 17 ND 15 ND 19 ND --

17-Dec-03 20 ND 13 ND 18 ND --

19-Jan-04 24 ND 17 ND 24 ND --

19-Feb-04 20 17 20 --

19-Mar-04 13 ND 19 ND 22 ND --

21-Apr-04 28 ND 36 ND 23 ND --

24-May-04 21 ND 20 ND 19 ND --

24-Jun-04 30 ND 30 ND 31 ND --

27-Aug-04 20 ND 21 ND 21 ND --

1071

1072

(Control)

576

ICF International A-53 DRAFT – December 2006
Appendix A

RESULTS (mg/kg) b, c

Round 1 Round 2 Round 3 Round 4

Exhibit A-10. Soil Deposition Monitoring Results for Pb - Primary Pb Smelter a

Pilot Analysis 

ID Sampling Date

7-Jan-03 25 ND 20 ND 28 ND --

14-Feb-03 30 ND 24 ND 25 ND --

11-Apr-03 64.1 63 ND 103 77.2

7-May-03 29 ND 26 ND 28 ND --

6-Jun-03 46.1 41.1 57.8 --

11-Jul-03 93.9 46.4 95.2 --

11-Aug-03 165 108 190 --

15-Sep-03 97.6 85.7 125 --

15-Oct-03 54.5 68.1 75.8 --

18-Nov-03 74.8 82.3 109 50.8

17-Dec-03 87 55.2 146 80.3

19-Jan-04 131 144 107 --

19-Feb-04 172 125 104 --

19-Mar-04 36.9 30 ND 187.7 --

21-Apr-04 207 103 301 --

24-May-04 95.8 93 189 --

24-Jun-04 162 114 257 --

27-Aug-04 205 34.5 136 -- a

 Data were obtained from EPA Region 7 (2006).

b

 "--" indicates that no sample was during that time.

c

 A value qualified with an "ND" represents a non-detect. The value presented is the detection limit. 

For the purpose of calculating averages, one-half the detection limit was used as the value for non-detects.

1073

ICF International A-54 DRAFT – December 2006
Appendix A

RESULTS (mg/ft2) b

Height = 1 foot Height = 10 feet

7-Apr-03 0.774 10.318

7-May-03 10.928 6.041

6-Jun-03 3.657 5.266

11-Jul-03 3.826 3.861

12-Aug-03 2.669 3.543

15-Sep-03 13.584 15.058

15-Oct-03 7.877 6.202

17-Nov-03 5.903 5.32

17-Dec-03 15.137 11.899

19-Jan-04 7.203 5.162

19-Feb-04 8.152 4.927

19-Mar-04 6.943 10.346

21-Apr-04 7.852 6.829

7.3 7.3

7-Apr-03 3.343 4.432

7-May-03 3.684 2.699

6-Jun-03 0.516 0.459

11-Jul-03 2.118 1.986

12-Aug-03 1.006 1.054

15-Sep-03 2.306 2.591

15-Oct-03 1.203 1.494

17-Nov-03 1.497 2.698

17-Dec-03 2.552 3.163

19-Jan-04 2.739 3.025

19-Feb-04 1.093 2.699

19-Mar-04 5.124 6.831

21-Apr-04 4.194 4.202

2.4 2.9

7-Apr-03 3.924 4.128

7-May-03 3.727 4.01

6-Jun-03 1.131 1.068

11-Jul-03 1.666 2.045

12-Aug-03 1.333 1.337

15-Sep-03 2.418 2.164

15-Oct-03 1.62 1.676

17-Nov-03 1.64 2.322

17-Dec-03 3.769 4.657

19-Jan-04 3.627 3.698

19-Feb-04 1.975 1.603

19-Mar-04 4.521 5.57

21-Apr-04 3.363 4.105

2.7 3.0

7-Apr-03 11.904 12.295

7-May-03 10.046 11.758

6-Jun-03 2.579 2.57

11-Jul-03 4.09 4.249

12-Aug-03 1.047 2.624

15-Sep-03 3.86 2.916

15-Oct-03 2.488 2.808

17-Nov-03 5.848 5.581

17-Dec-03 11.737 14.01

19-Jan-04 8.328 3.179

19-Feb-04 4.011 5.487

19-Mar-04 9.145 20.996

21-Apr-04 20.312 33.171

7.3 9.4

Annual Averages:

Annual Averages:

Annual Averages:

286

240

207

Annual Averages:

Exhibit A-11. Air Deposition Monitoring Results for Pb - Primary Pb Smelter a

Pilot Analysis 

ID Sampling Date

181

ICF International A-55 DRAFT - December 2006
Appendix A

RESULTS (mg/ft2) b

Height = 1 foot Height = 10 feet

Exhibit A-11. Air Deposition Monitoring Results for Pb - Primary Pb Smelter a

Pilot Analysis 

ID Sampling Date

7-Apr-03 3.937 4.234

7-May-03 5.204 3.422

6-Jun-03 1.122 0.798

11-Jul-03 2.712 2.333

12-Aug-03 0.803 0.887

15-Sep-03 1.765 3.073

15-Oct-03 2.547 1.371

17-Nov-03 2.376 3.008

17-Dec-03 3.757 4.646

19-Jan-04 2.878 5.938

19-Feb-04 0.452 1.842

19-Mar-04 4.835 7.211

21-Apr-04 7 8.862

3.0 3.7

7-Apr-03 2.645 1.523

7-May-03 1.035 1.193

6-Jun-03 0.452 0.263

11-Jul-03 0.917 0.835

12-Aug-03 0.341 0.484

15-Sep-03 0.887 0.606

15-Oct-03 0.514 0.527

17-Nov-03 0.877 0.542

17-Dec-03 1.713 1.644

19-Jan-04 1.735 2.191

19-Feb-04 0.822 1.073

19-Mar-04 3.525 1.922

21-Apr-04 3.323 2.063

1.4 1.1

7-Apr-03 1.991 1.994

7-May-03 1.827 1.519

6-Jun-03 0.716 0.514

11-Jul-03 1.396 1.417

12-Aug-03 0.596 0.742

15-Sep-03 0.972 1.406

15-Oct-03 0.671 0.966

17-Nov-03 1.183 1.275

17-Dec-03 2.02 1.99

19-Jan-04 2.209 1.786

19-Feb-04 0.596 1.556

19-Mar-04 3.777 3.707

21-Apr-04 3.923 4.399

1.7 1.8

7-Apr-03 14.764 17.635

7-May-03 19.453 7.265

6-Jun-03 4.673 4.611

11-Jul-03 5.802 4.397

12-Aug-03 6.804 6.784

15-Sep-03 16.903 31.997

15-Oct-03 5.247 8.909

17-Nov-03 5.925 4.734

17-Dec-03 16.435 13.384

19-Jan-04 12.265 10.1

19-Jan-04 7.927 8.057

19-Mar-04 22.039 13.635

21-Apr-04 10.718 12.532

11 11

Annual Averages:

Annual Averages:

Annual Averages:

1071

576

Annual Averages:

531

444

ICF International A-56 DRAFT - December 2006
Appendix A

RESULTS (mg/ft2) b

Height = 1 foot Height = 10 feet

Exhibit A-11. Air Deposition Monitoring Results for Pb - Primary Pb Smelter a

Pilot Analysis 

ID Sampling Date

7-Apr-03 0.588 12.125

7-May-03 0.774 0.601

6-Jun-03 0.268 0.292

11-Jul-03 0.363 0.317

12-Aug-03 0.3 0.456

15-Sep-03 0.236 0.241

15-Oct-03 0.203 0.238

17-Nov-03 0.28 0.426

17-Dec-03 0.805 0.7

19-Jan-04 0.676 0.313

19-Feb-04 0.33 0.282

19-Mar-04 0.718 0.642

21-Apr-04 2.382 1.771

0.61 1.4

7-Apr-03 7.798 8.346

7-May-03 6.195 6.507

6-Jun-03 2.296 1.677

11-Jul-03 3.844 6.033

12-Aug-03 1.722 1.983

15-Sep-03 7.751 4.782

15-Oct-03 4.969 4.071

17-Nov-03 5.051 3.52

17-Dec-03 7.816 8.113

19-Jan-04 4.733 5.148

19-Feb-04 3.601 4.754

19-Mar-04 6.899 7.082

21-Apr-04 8.554 5.393

5.5 5.2

a

 Data were obtained EPA Region 7 (2006).

b

 "--" indicates that no sample was taken during that time.

Annual Averages:

Annual Averages:

1073

1072

(Control)

ICF International A-57 DRAFT - December 2006
 Appendix A 

Exhibit A-12. Air Monitoring Locations Around the Secondary Pb Smelter 

ICF International A-58 DRAFT – December 2006 
Appendix A

Average Annual Pb Concentrations from AirData (μg/m3) a

1997 1998 1999 2000

11090003 290 – 480 0.403 0.468 0.474 0.383

11090006 570 – 750 0.132 0.158 0.178 0.198

a

 AirData values are for average annual Pb concentrations in total suspended particulate 

matter (TSP) and were obtained from the AirData website monitor reports. 

Monitor ID

Facility 

(meters)

Exhibit A-13. Average Annual Pb Concentrations from AirData Monitors 

Located Around the Secondary Pb Smelter 

ICF International A-59 DRAFT - December 2006
 Appendix A 

1 References 

2 

3 

4 

5 

U.S. Environmental Protection Agency (USEPA) Region 7. (2006) Herculaneum Lead Master 

090804 (Microsoft Access Database). Obtained from Region 7 and Updates with 2005 and 2006 

Data. 

ICF International A-60 DRAFT – December 2006 
 

 

Appendix B 

Emissions and Modeling Parameters for the Primary Pb Smelter 
 

 
 Appendix B 

 

ICF International B-1 DRAFT – December 2006 

1 Appendix B includes a summary and discussion of the primary Pb smelter facility’s emission and 

2 source parameters. Exhibit B-1 presents a summary of the emission release parameters and 

3 average annual emission rate for the point sources at the primary Pb smelter. Similarly, Exhibits 

4 B-2 and B-3 each present a summary of the average annual emission rates and emission release 

5 parameters for volume and area sources, respectively. Particle size distribution inputs for point, 

6 volume, and area sources are presented in Exhibits B-4, B-5, and B-6, respectively. These 

7 summary tables include the mass fractions, particle diameters, and particle densities associated 

8 with each identified emission source. Point source emission release parameters include stack 

9 height, stack gas exit temperature and velocity, and stack diameter; volume source emission 

10 release parameters include release height and source dimensions (lateral and vertical); and area 

11 source emission release parameters include release height, source area, angle from north, and the 

12 initial vertical dimension of the area source plume. A discussion of modeling results is provided 

13 in Chapter 4 of the report. 

14 

15 Emissions information for the primary Pb smelter was obtained in the form of input files for the 

16 Industrial Source Complex - Plume Rise Model Enhancements (ISC-PRIME) air dispersion 

17 model. These emissions reflect the 2000 Revision of the State Implementation Plan (SIP) 

18 developed for the facility (MDNR 2000). The files included a detailed input runstream file, an 

19 hourly emission file, and an on-site meteorological file with 25 consecutive months of data 

20 (April 1, 1997 to April 30, 1999). The ISC-PRIME input runstream file included emissions of 

21 Pb and release parameters for 99 sources (with four sources having zero emissions). A total of 

22 266 tons/year of Pb emissions from processes at the facility, fugitive emissions from transferring 

23 of materials, fugitive emissions from storage at the slag pile, and emissions associated with 

24 roadway dust were modeled. Each emission release point has corresponding location 

25 coordinates, terrain elevation, and release parameters required for air dispersion modeling. In 

26 addition, the input file contained particle size distributions for each source and building 

27 downwash parameters (the location and size of each building that may affect the air dispersion of 

28 the emissions). Particle sizes for emissions from road segment emission points around the 

29 primary Pb smelter ranged from 44 to 210 μm. Particle sizes for emissions from all other 

30 emission points at the primary Pb smelter ranged from 6.3 to 45.5 μm. Emissions and release 

31 parameters, particle size inputs, and other modeling input information is provided in this 

32 appendix. 

33 

34 The location coordinates, provided in Universal Transverse Mercator zone 15 projection in the 

35 North American Datum 1927, were confirmed to be accurate by mapping with GIS software and 

36 a local aerial photo. The main stack emission release point fell on top of the main stack in the 

37 aerial photo, and the other emission release points appeared to be correct based on facility maps 

38 and the aerial photo. 

39 

40 
Annual Average 

Emission Rate 

(g/s)

Pb

30001

Main Stack - GEP stack height (167.67 is actual stack ht) 729534 4237767 128.970 7.15 100.75 425 6 

40001A Drossing 729553 4237849 129.040 0.0103 15.24 297 13.4 

40004 Dross Kettle Heat Stack 729588 4237885 128.280 0.00344 21.3 391.5 0.69 40005 Dross Kettle Heat Stack 729587 4237895 129.070 0.00344 21.3 391.5 0.69 

50001A Refinery 729553 4237840 128.820 0.00188 15.24 297 13.4 

50001B Refinery 729563 4237801 127.810 0.00113 18.29 297 9.1 

50011

Kettle Setting Heat Stack 729579 4237787 126.630 0.0033 18.8 989.3 5.96 

50012

Kettle Setting Heat Stack 729579 4237796 126.990 0.0033 18.8 989.3 5.96 

50013

Kettle Setting Heat Stack 729579 4237805 127.030 0.0033 18.8 989.3 5.96 

50014

Kettle Setting Heat Stack 729579 4237813 126.800 0.0033 18.8 989.3 5.96 

50015

Kettle Setting Heat Stack 729579 4237822 126.990 0.0033 18.8 989.3 5.96 

50016

Kettle Setting Heat Stack 729579 4237831 127.380 0.0033 18.8 989.3 5.96 

50017

Kettle Setting Heat Stack 729579 4237840 127.080 0.0033 18.8 989.3 5.96 

50018

Kettle Setting Heat Stack 729579 4237849 127.100 0.0033 18.8 989.3 5.96 

60001 Strip Mill Heat Stack 729434 4237560 127.360 0.000113 21.3 699.8 2.73 60002 Strip Mill Heat Stack 729475 4237560 124.730 0.000113 21.3 699.8 2.73 60003 Strip Mill Baghouse 729456 4237562 124.990 5.93E-06 7.6 297 7.7 60004 Low Alpha Baghouse 729477 4237483 125.580 0.00158 6.1 327.6 17.5 60005 Strip Mill Vent 729440 4237549 126.100 0.00117 16.8 297 5 60006 Strip Mill Vent 729450 4237549 125.530 0.00117 16.8 297 5 60007 Strip Mill Vent 729460 4237549 124.970 0.00117 16.8 297 5 60008 Strip Mill Vent 729470 4237549 124.660 0.00117 16.8 297 5 

a Locations confirmed by ICF International using aerial photography from USGS. 

Exhibit B-1. Emission Release Parameters and Annual Average Emission Rates for Point Sources

Point Emission Releases

Stack 

Height (m)

Stack Gas Exit 

Temperature (K)

Stack Gas Ex

Velocity (m/

EMISSION 

POINT ID

LOCATION a

Emission Point 

Description UTMx (m) UTMy (m) Elevation (m)

ICF International B-2 
Annual Average 

Emission Rate (g/s)

Pb

10001A Railcar Rotary Dump Fugitives 729547 4238029 131.45 0.00685 6.4 10001B Railcar Rotary Dump Fugitives 729547 4238029 131.45 0.00685 6.4 

10001C Railcar Rotary Dump Fugitives 729547 4238029 131.45 0.01483 6.4 10001D Railcar Rotary Dump Fugitives 729518 4237469 123.87 0.00685 2 

20001T Transfer to Trestle Building 729557 4237919 131.25 1.80E-05 18.6 

20001S Transfer to Trestle Building 729544 4237468 120.36 1.80E-05 2 

20002 Sinter Unloading (NE corner of Sinter Building) 729547 4237919 131.610 1.03E-05 3 20003 Sinter Loading/Unloading (Truck/Rail) (At Sinter Building) 729545 4237931 131.550 1.03E-05 2 20004 Fume Loading 729511 4237971 131.980 0.001236 3 

20005A Sinter Mix Room 729519 4237854 130.53 0.00683 18.3 20005B Sinter Mix Room 729519 4237843 130.21 0.00683 18.3 

20005C Sinter Mix Room 729519 4237832 130.05 0.00683 18.3 20005D Sinter Mix Room 729519 4237821 129.82 0.00683 18.3 

20005E Sinter Mix Room 729519 4237810 129.68 0.00683 18.3 

20005F Sinter Mix Room 729519 4237799 129.74 0.00683 18.3 

20006 Sinter Building Fugitives 729546 4237904 131.360 0.00962 20 20007 #3 Baghouse Roof Vents 729540 4237699 128.490 0.000372 21.3 30002 Blast Furnace 729583 4237960 130.240 0.0024 9.3 30011 #5 Baghouse Roof Vent 729524 4238016 132.010 0.000248 21.3 30012 #5 Baghouse Roof Vent 729524 4237999 131.940 0.000248 21.3 30013 #5 Baghouse Roof Vent 729524 4237982 131.870 0.000248 21.3 40001 Drossing 729578 4237885 129.810 0.00173 7.62 50001 Drossing 729578 4237810 126.950 0.0317 5.49 70001 Fugitive Dross Handling 729636 4238220 127.940 0.00089891 2 70003 Fugitive Concentrate Handling 729518 4237469 123.870 0.003499896 2 70007 Fugitive Slag Handling 729239 4237241 116.430 0.00034757 2 70009 Fugitive Secondaries Handling 729492 4237630 128.130 0.00016254 2 

Exhibit B-2. Emission Release Parameters and Annual Average Emission Rates for Volume Sources

Volume Emission 

Release Height 

above groundlevel (m) 

Di

a Locations confirmed by ICF International using aerial photography from USGS. 

LOCATION a

UTMx (m) UTMy (m) Elevation (m)

EMISSION 

POINT ID Emission Point Description

ICF International B-3 
Annual Average 

Emission Rate 

(g/s-m2)

Pb

70002

Fugitive Dross Wind Erosion 

yes - emission in this 

table is an average 729620 4238201 128.850 0 2 30 40 

70004

Fugitive Concentrate Wind Erosion 

yes - emission in this 

table is an average 729515 4237391 119.120 0 2 15 150 

70006

Fugitive Sinter Wind Erosion 

yes - emission in this 

table is an average 729537 4237395 118.500 0 2 15 150 

70008

Fugitive Slag Wind Erosion 

yes - emission in this 

table is an average 728966 4237118 117.730 1.48614E-06 2 465 200 

70010

Fugitive Secondaries Wind Erosion 

yes - emission in this 

table is an average 729482 4237609 127.830 0 2 20 40 

70020 Road Segment A 729383 4237563 132.990 9.57E-06 0 100 10 70021 Road Segment A 729385 4237458 126.750 9.57E-06 0 10 100 70022 Road Segment A 729381 4237452 127.000 9.57E-06 0 100 10 70023 Road Segment A 729413 4237354 120.180 9.57E-06 0 100 10 70024 Road Segment A 729482 4237281 118.720 9.57E-06 0 10 100 70025 Road Segment A 729552 4237355 117.240 9.57E-06 0 10 100 70026 Road Segment A 729565 4237458 118.260 9.57E-06 0 10 100 70027 Road Segment A 729569 4237561 121.320 9.57E-06 0 23 45 70040 Road Segment B1 729586 4238044 129.750 7.08E-06 0 10 100 70041 Road Segment B1 729599 4238140 130.150 7.08E-06 0 10 25 70042 Road Segment B1 729590 4238163 130.650 7.08E-06 0 10 25 70043 Road Segment B1 729570 4238186 131.370 7.08E-06 0 25 10 70044 Road Segment B1 729531 4238090 132.150 7.08E-06 0 10 100 70045 Road Segment B1 729515 4238071 132.560 7.08E-06 0 25 10 70046 Road Segment B1 729500 4238031 132.380 7.08E-06 0 10 50 70047 Road Segment B1 729505 4237982 132.000 7.08E-06 0 10 50 70048 Road Segment B1 729493 4237884 131.220 7.08E-06 0 10 100 70049 Road Segment B1 729465 4237791 130.760 7.08E-06 0 10 100 70050 Road Segment B1 729472 4237717 129.150 7.08E-06 0 10 75 70051 Road Segment B1 729474 4237693 128.620 7.08E-06 0 10 25 

Hourly emissions or 

emission factors?

LOCATION a

UTMx 

(m) UTMy (m) Elevation (m)

Exhibit B-3. Emission Release Parameters and Annual Average Emission Rates for Area Sources

Area Emission Releases

Release 

Height (m)

Length of x 

side of area 

(m)

Length of y 

side of area 

(m)

EMISSION 

POINT ID

Emission Point 

Description

ICF International B-4 
Annual Average 

Emission Rate 

(g/s-m2)

Pb

Hourly emissions or 

emission factors?

LOCATION a

UTMx 

(m) UTMy (m) Elevation (m)

Exhibit B-3. Emission Release Parameters and Annual Average Emission Rates for Area Sources

Area Emission Releases

Release 

Height (m)

Length of x 

side of area 

(m)

Length of y 

side of area 

(m)

EMISSION 

POINT ID

Emission Point 

Description

70052 Road Segment B1 729473 4237682 128.350 7.08E-06 0 25 10 70053 Road Segment B1 729518 4237593 125.200 7.08E-06 0 10 100 70054 Road Segment B1 729525 4237568 124.860 7.08E-06 0 10 25 70055 Road Segment B1 729532 4237559 124.800 7.08E-06 0 75 10 70060 Road Segment B2 729565 4237459 118.260 4.06E-06 0 10 100 70061 Road Segment B2 729547 4237355 117.490 4.06E-06 0 10 100 70062 Road Segment B2 729489 4237288 118.670 4.06E-06 0 10 100 70063 Road Segment B2 729415 4237240 116.430 4.06E-06 0 10 100 70064 Road Segment B2 729423 4237225 116.430 4.06E-06 0 100 10 70070 Road Segment C 729513 4237936 131.810 1.04E-06 0 50 10 70071 Road Segment C 729488 4237879 131.170 1.04E-06 0 10 75 70072 Road Segment C 729463 4237789 130.800 1.04E-06 0 10 100 70073 Road Segment C 729474 4237717 129.040 1.04E-06 0 10 75 70074 Road Segment C 729473 4237694 128.660 1.04E-06 0 10 25 70075 Road Segment C 729471 4237683 128.470 1.04E-06 0 25 10 70076 Road Segment C 729517 4237595 125.250 1.04E-06 0 10 100 70077 Road Segment C 729524 4237568 124.870 1.04E-06 0 10 25 70078 Road Segment C 729531 4237556 124.860 1.04E-06 0 25 10 70079 Road Segment C 729556 4237457 118.830 1.04E-06 0 10 100 70080 Road Segment D 729466 4237790 130.740 1.51E-06 0 10 100 70081 Road Segment D 729477 4237719 128.980 1.51E-06 0 10 75 70082 Road Segment D 729471 4237667 128.240 1.51E-06 0 10 50 70083 Road Segment D 729446 4237667 128.290 1.51E-06 0 25 10 70084 Road Segment D 729436 4237577 126.960 1.51E-06 0 10 100 70085 Road Segment D 729451 4237575 125.210 1.51E-06 0 100 10 

a Locations confirmed by ICF International using aerial photography from USGS. 

ICF International B-5 
Bin1 Bin2 Bin3 Bin4 Bin5 Bin6 Bin7 Bin1 Bin2 Bin3 Bin4 Bin5 Bin6 

30001

Main Stack - GEP stack height (167.67 is actual stack ht) 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.3 15.9 25.7 35.6 45.5 55.4 

40001A Drossing 0.285 0.447 0.041 0.000 0.228 0.000 0.000 6.3 15.9 25.7 35.6 45.5 55.4 

40004 Dross Kettle Heat Stack 0.285 0.447 0.041 0.000 0.228 0.000 0.000 6.3 15.9 25.7 35.6 45.5 55.4 40005 Dross Kettle Heat Stack 0.285 0.447 0.041 0.000 0.228 0.000 0.000 6.3 15.9 25.7 35.6 45.5 55.4 

50001A Refinery 0.149 0.641 0.211 0.000 0.000 0.000 0.000 6.3 15.9 25.7 35.6 45.5 55.4 50001B Refinery 0.149 0.641 0.211 0.000 0.000 0.000 0.000 6.3 15.9 25.7 35.6 45.5 55.4 

50011

Kettle Setting Heat Stack 0.149 0.641 0.211 0.000 0.000 0.000 0.000 6.3 15.9 25.7 35.6 45.5 55.4 

50012

Kettle Setting Heat Stack 0.149 0.641 0.211 0.000 0.000 0.000 0.000 6.3 15.9 25.7 35.6 45.5 55.4 

50013

Kettle Setting Heat Stack 0.149 0.641 0.211 0.000 0.000 0.000 0.000 6.3 15.9 25.7 35.6 45.5 55.4 

50014

Kettle Setting Heat Stack 0.149 0.641 0.211 0.000 0.000 0.000 0.000 6.3 15.9 25.7 35.6 45.5 55.4 

50015

Kettle Setting Heat Stack 0.149 0.641 0.211 0.000 0.000 0.000 0.000 6.3 15.9 25.7 35.6 45.5 55.4 

50016

Kettle Setting Heat Stack 0.149 0.641 0.211 0.000 0.000 0.000 0.000 6.3 15.9 25.7 35.6 45.5 55.4 

50017

Kettle Setting Heat Stack 0.149 0.641 0.211 0.000 0.000 0.000 0.000 6.3 15.9 25.7 35.6 45.5 55.4 

50018

Kettle Setting Heat Stack 0.149 0.641 0.211 0.000 0.000 0.000 0.000 6.3 15.9 25.7 35.6 45.5 55.4 

60001 Strip Mill Heat Stack 0.149 0.641 0.211 0.000 0.000 0.000 0.000 6.3 15.9 25.7 35.6 45.5 55.4 60002 Strip Mill Heat Stack 0.149 0.641 0.211 0.000 0.000 0.000 0.000 6.3 15.9 25.7 35.6 45.5 55.4 60003 Strip Mill Baghouse 0.149 0.641 0.211 0.000 0.000 0.000 0.000 6.3 15.9 25.7 35.6 45.5 55.4 60004 Low Alpha Baghouse 0.149 0.641 0.211 0.000 0.000 0.000 0.000 6.3 15.9 25.7 35.6 45.5 55.4 60005 Strip Mill Vent 0.149 0.641 0.211 0.000 0.000 0.000 0.000 6.3 15.9 25.7 35.6 45.5 55.4 

Emission Point 

Description

Exhibit B-4. Particle Size Distribution Inputs for Point Sources

Emission 

Point ID

MASS FRACTION PARTICLE DIAMETER (μm)

ICF International B-6 
Bin1 Bin2 Bin3 Bin4 Bin5 Bin6 Bin7 Bin1 Bin2 Bin3 Bin4 Bin5 Bin6 

Emission Point 

Description

Exhibit B-4. Particle Size Distribution Inputs for Point Sources

Emission 

Point ID

MASS FRACTION PARTICLE DIAMETER (μm)

60006 Strip Mill Vent 0.149 0.641 0.211 0.000 0.000 0.000 0.000 6.3 15.9 25.7 35.6 45.5 55.4 60007 Strip Mill Vent 0.149 0.641 0.211 0.000 0.000 0.000 0.000 6.3 15.9 25.7 35.6 45.5 55.4 60008 Strip Mill Vent 0.149 0.641 0.211 0.000 0.000 0.000 0.000 6.3 15.9 25.7 35.6 45.5 55.4 

ICF International B-7 
Bin1 Bin2 Bin3 Bin4 Bin5 Bin6 Bin7 Bin1 Bin2 Bin3 Bin4 Bin5 Bin

10001A

Railcar Rotary Dump Fugitives 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.39

10001B

Railcar Rotary Dump Fugitives 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.39

10001C

Railcar Rotary Dump Fugitives 0.260 0.525 0.118 0.000 0.104 0.000 0.000 6.288 15.88 25.678 35.562 45.47 55.39

10001D

Railcar Rotary Dump Fugitives 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.39

20001T

Transfer to Trestle Building 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.39

20001S

Transfer to Trestle Building 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.39

20002

Sinter Unloading (NE corner of Sinter Building) 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.39

20003

Sinter Loading/ Unloading (Truck/Rail) (At Sinter Building) 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.39

20004 Fume Loading 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.39

20005A Sinter Mix Room 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.39

20005B Sinter Mix Room 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.39

20005C Sinter Mix Room 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.39

20005D Sinter Mix Room 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.39

20005E Sinter Mix Room 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.39

20005F Sinter Mix Room 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.39

20006

Sinter Building Fugitives 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.39

20007

#3 Baghouse Roof Vents 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.39

30002 Blast Furnace 0.241 0.526 0.124 0.109 0.000 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.3930011

#5 Baghouse Roof Vent 0.241 0.526 0.124 0.109 0.000 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.39

30012

#5 Baghouse Roof Vent 0.241 0.526 0.124 0.109 0.000 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.39

Exhibit B-5. Particle Size Distribution Inputs for Volume Sources

Emission 

Point ID

Emission Point 

Description

MASS FRACTION PARTICLE DIAMETER (μm)

ICF International B-8 
Bin1 Bin2 Bin3 Bin4 Bin5 Bin6 Bin7 Bin1 Bin2 Bin3 Bin4 Bin5 Bin

Exhibit B-5. Particle Size Distribution Inputs for Volume Sources

Emission 

Point ID

Emission Point 

Description

MASS FRACTION PARTICLE DIAMETER (μm)

30013

#5 Baghouse Roof Vent 0.241 0.526 0.124 0.109 0.000 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.39

40001 Drossing 0.285 0.447 0.041 0.000 0.228 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.3950001 Drossing 0.149 0.641 0.211 0.000 0.000 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.3970001

Fugitive Dross Handling 0.285 0.447 0.041 0.000 0.228 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.39

70003

Fugitive Concentrate Handling 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.39

70007

Fugitive Slag Handling 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.39

70009

Fugitive Secondaries Handling 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.288 15.88 25.678 35.562 45.474 55.39

ICF International B-9 
Bin1 Bin2 Bin3 Bin4 Bin5 Bin6 Bin7 Bin1 Bin2 Bin3 Bin4 Bin5 Bin

70002

Fugitive Dross Wind Erosion 0.285 0.447 0.041 0.000 0.228 0.000 0.000 6.29 15.88 25.68 35.56 45.47 55.4

70004

Fugitive Concentrate Wind Erosion 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.29 15.88 25.68 35.56 45.47 55.4

70006

Fugitive Sinter Wind Erosion 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.29 15.88 25.68 35.56 45.47 55.4

70008

Fugitive Slag Wind Erosion 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.29 15.88 25.68 35.56 45.47 55.4

70010

Fugitive Secondaries Wind Erosion 0.260 0.525 0.112 0.000 0.104 0.000 0.000 6.29 15.88 25.68 35.56 45.47 55.4

70020 Road Segment A 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270021 Road Segment A 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270022 Road Segment A 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270023 Road Segment A 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270024 Road Segment A 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270025 Road Segment A 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270026 Road Segment A 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270027 Road Segment A 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270040 Road Segment B1 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270041 Road Segment B1 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270042 Road Segment B1 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270043 Road Segment B1 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.2

Exhibit B-6. Particle Size Distribution Inputs for Area Sources

Emission 

Point ID

Emission Point 

Description

MASS FRACTION PARTICLE DIAMETER (μm)

ICF International B-10 
Bin1 Bin2 Bin3 Bin4 Bin5 Bin6 Bin7 Bin1 Bin2 Bin3 Bin4 Bin5 Bin

Exhibit B-6. Particle Size Distribution Inputs for Area Sources

Emission 

Point ID

Emission Point 

Description

MASS FRACTION PARTICLE DIAMETER (μm)

70044 Road Segment B1 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270045 Road Segment B1 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270046 Road Segment B1 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270047 Road Segment B1 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270048 Road Segment B1 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270049 Road Segment B1 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270050 Road Segment B1 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270051 Road Segment B1 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270052 Road Segment B1 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270053 Road Segment B1 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270054 Road Segment B1 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270055 Road Segment B1 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270060 Road Segment B2 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270061 Road Segment B2 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270062 Raod Segment B2 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270063 Road Segment B2 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270064 Road Segment B2 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270070 Road Segment C 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.2

ICF International B-11 
Bin1 Bin2 Bin3 Bin4 Bin5 Bin6 Bin7 Bin1 Bin2 Bin3 Bin4 Bin5 Bin

Exhibit B-6. Particle Size Distribution Inputs for Area Sources

Emission 

Point ID

Emission Point 

Description

MASS FRACTION PARTICLE DIAMETER (μm)

70071 Road Segment C 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270072 Road Segment C 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270073 Raod Segment C 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270074 Road Segment C 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270075 Road Segment C 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270076 Road Segment C 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270077 Road Segment C 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270078 Road Segment C 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270079 Road Segment C 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270080 Road Segment D 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270081 Road Segment D 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270082 Road Segment D 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270083 Road Segment D 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270084 Road Segment D 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.270085 Road Segment D 0.159 0.553 0.216 0.061 0.009 0.002 0.004 44.00 48.63 64.07 90.38 128.25 181.2

ICF International B-12 
 Appendix B 

1 References 

2 

3 

4 

5 

6 

7 

Missouri Department of Natural Resources (MDNR). (2000) 2000 Revision of the State 

Implementation Plan for Lead for the Doe Run Resources Corporation Primary Lead Smelter 

Herculaneum, Missouri, Public Hearing – October 26, 2000. Jefferson City, MO: Air Pollution 

Control Program, Division of Environmental Quality. October. 

ICF International B-13 DRAFT – December 2006 

Appendix C 

Emissions and Modeling Parameters for the Secondary Pb Smelter

 Appendix C 

 

1 

2 

3 

4 

5 

6 

7 

8 

9 

10 

11 

12 

13 

14 

15 

16 

17 

18 

19 

20 

21 

22 

23 

24 

25 

26 

27 

28 

29 

30 

31 

32 

33 

34 

35 

36 

37 

38 

Appendix C includes a discussion and summary of the secondary Pb smelter facility’s emission 

and source input parameters. Exhibit C-1 presents a summary of the emission release parameters 

and average annual emission rate for the four point sources and one area source at the secondary 

Pb smelter. Emission release parameters for point sources include stack height, stack gas exit 

temperature, stack gas exit velocity, and stack diameter; area source emission release parameters 

include release height, source area, angle, and initial vertical dimension of the area source plume. 

Exhibit C-2 presents a summary of particle size distribution inputs for the point and area 

emissions sources, including particle mass fractions, diameters, and density. A discussion of 

modeling results is provided in Chapter 4 of the report. 

The estimates for process emissions for the secondary Pb smelter were calculated from Pb 

emissions measured during stack tests performed in December 1997, November 1999, and 

February 2000 (ECR 2006). Thus, the emissions represent actual emissions during that time 

period. Fugitive emissions were estimated by comparing the modeled stack emissions 

concentrations, background Pb concentrations, and monitored Pb concentrations. The fraction of 

the measured Pb concentration in air that could not be attributed to known sources was assumed 

to be from fugitive emissions, and a statistical analysis was conducted to generate fugitive Pb 

emission factors (ECR 2006). A total of 4.56 tons/year of Pb emissions from processes and 

fugitive emissions at the facility were modeled. 

Stack parameters, fugitive release parameters, the location of each emission source, particle size 

information, and building downwash parameters were also obtained from ECR (2006). The 

particle size information used for deposition modeling was derived from AP-42 particle 

distributions for melting, smelting, refining metals, and fugitive dust emissions (USEPA 1995). 

Flat terrain was used for the model runs because there is minimal elevation change in the area. 

Particle sizes for emissions from point sources at the secondary Pb smelter ranged from 0.5 to 10 

μm, and particle sizes for emissions from area sources at the secondary Pb smelter ranged from 

1.25 to 22.5 μm. Emissions and release parameters, particle size inputs, and other modeling 

input information is provided in this appendix. 

It was confirmed that the location coordinates, provided in the Universal Transverse Mercator 

zone 16 projection in the North American Datum 1983, were accurate by mapping the 

coordinates with GIS software and examining a local aerial photo. The emission release points 

appeared to be correct based on the aerial photo. Five years of meteorological data were 

compiled for use in the air dispersion modeling. Surface data from Montgomery, Alabama 

(NOAA 1997a) and upper air data from Centerville, Alabama (NOAA 1997b) from 1990 to 1994 

were used. The meteorological data are limited because they are not site-specific and may not 

fully represent conditions at the facility.

ICF International C-1 DRAFT – December 2006 
Actual 

Annual 

Average 

Emission 

Rate (g/s) b

Actual 

Annual 

Average 

Emission 

Rate 

(g/s-m2)

Pb Pb

Stack1 596705 3517220 NA point 3.01E-02 54.9 366.3 36.6 1.2

Stack4 596810 3517275 NA point 3.17E-03 27.4 338.6 32.3 0.9Stack5 596715 3517220 NA point 5.14E-02 54.9 366.3 25.3 1.2Stack10 596766 3517210 NA point 8.47E-03 9.1 294.1 23.8 1.1Area 596814 3517435 NA area 3.18E-07 0 400 3

a Locations confirmed by ICF International using aerial photography from USGS. b Emissions confirmed by stack test in December 1997, November 1999 and February 2000.

Stack Gas 

Exit 

Temperature 

(K)

Len

o

Sid

A

(m

Stack 

Gas Exit 

Velocity 

(m/s)

Stack 

Diameter 

(m)

Release 

Height 

(m)

Length 

of x Side 

of Area 

(m)

LOCATION a

SOURCE 

TYPE 

(Point, 

Area, or 

Volume)

EMISSION 

POINT ID

Exhibit C-1. Secondary Pb Smelter Emission Release Parameters and Annual Average Emission R

POINT SOURCES AREA SOUR

UTMx 

(m) UTMy (m)

Elevation 

(m)

Stack 

Height 

(m)

ICF International C-2 
Appendix C

Exhibit C-2. Secondary Pb Smelter Particle Size Distribution Inputs

Particle Size 

Distributions 

Fraction of 

Particles

Mean 

Diameter 

(μm) 

Particle 

Density 

(g/cm3

)

Source Type

Point 0.72 0.5 1

0.08 1.5 1

0.04 2.5 1

0.04 4 1

0.12 10 1

Area 0.05 1.25 1.5

0.15 6.25 1.5

0.04 22.5 1.5

0.77 22.5 1.5

ICF International C-3 DRAFT - December 2006
 Appendix C 

ICF International C-4 DRAFT – December 2006 

1 References 

2 EC/R Incorporated. (2006) Secondary Lead Smelter Industry – Source Characterization for 

3 Residual Risk Assessment. Prepared for USEPA Office of Air and Radiation, Office of Air 

4 Quality Planning and Standards, Research Triangle Park, NC. November. 

5 National Oceanic and Atmospheric Administration (NOAA). (1997a) Hourly United States 

6 Weather Observations 1990-1995. Asheville, NC: National Climatic Data Center (NCDC). 

7 National Oceanic and Atmospheric Administration (NOAA). (1997b) Rediosonde Data of North 

8 America. Asheville, NC: National Climatic Data Center. 

9 U.S. Environmental Protection Agency (USEPA). (1995) Compilation of Air Pollutant Emission 

10 Factors, Volume I: Stationary Point and Area Sources. AP-42 Fifth Edition. Research Triangle 

11 Park: Office of Air Quality Planning and Standards. January. Available at 

12 http://www.epa.gov/ttn/chief/ap42/. 

13 
Appendix D 

Supplemental Information for the 

Near Roadway Urban Case Study 

 Appendix D 

 

ICF International D-1 DRAFT – December 2006 

1 Appendix D presents an additional description of the characteristics and data associated with the 

2 near roadway urban case study. These data include demographic data summaries of the area 

3 immediately surrounding the road segments of interest (Exhibit D-1); air monitoring data 

4 obtained from different networks of air monitors or studies of air quality (Exhibits D-2, D-3, D5 4, and D-5); soil measurements, or “surrogate” soil measurements for the area of interest (Exhibit 

6 D-6; no relevant and proximate data on Houston soil Pb concentrations were identified); and 

7 modeled indoor dust concentrations for each census block located inside (or partially overlapping 

8 with) the study area (Exhibit D-7). Additional descriptive information regarding the near 

9 roadway urban case study is included in Chapter 3 of the report; a discussion of media 

10 concentrations associated with this case study is provided in Chapter 4. 
 Appendix D 

 

ICF International D-2 DRAFT – December 2006 

1 D.1 Demographic Data 

2 

3 Demographic data for this location were obtained from the U.S. Census for each census block 

4 overlapping part of the study area. In order to estimate populations and derive demographic 

5 characteristics separately for each of the three zones within the study area and account for 

6 differences in size and shape between the zones and overlapping census blocks, an area-weighted 

average was calculated. Block polygons keyed to 15-digit FIPS codes with known areas (m2 7 ), 

population, household, and housing unit counts1 8 were superimposed on the study area, and the 

9 area of each block polygon overlapping with part of a study zone was calculated. These 

10 demographic data and overlap areas were used to calculate area-weighted estimates of 

11 population, household, and housing unit counts for each zone. The number of children age 7 

12 years and under residing in each zone was estimated as the product of the ratio of children to 

13 total population for each overlapping block and the population for these blocks estimated to fall 

14 within each zone. These calculations assume an even distribution of population and housing 

15 locations across a census block. Demographic information for each zone is summarized in 

16 Exhibit D-1. 

17 

18 Exhibit D-1. Demographic Information for Roadside Scenario 

Zone Within 

Study Area Area (m2

) 

Total 

Estimated 

Population 

Estimated 

Population 

Ages 0-7 

Number of 

Households 

Number of 

Housing Units 

0 to 12 m 38,621 49 7 17 17 

12 to 75 m 320,468 537 84 176 190 

75 to 200 m 680,582 1369 228 429 459 

19 

20 D.2 Air Monitoring Data 

21 

22 Ambient air monitoring data for Pb are available for two particle size fractions, PM2.5 and PM10, 

23 over the course of three days in February 2001 from a study focused on roadway contributions to 

24 air quality (ICF 2006). The sampler was located at 4011⁄2 Lang Avenue. This location is situated 

25 in a small park adjacent to residential neighborhoods and commercial areas. Lang Avenue is a 

26 relatively small neighborhood road used by local traffic, with a single lane in each direction and 

27 no median. Three major roads are in the near vicinity of the sampler location: one located about 

28 100 meters to the west; one located about 115 meters to the south (selected as the roadway of 

29 interest for this case study); and one located about 275 meters to the northeast. 

30 

31 Daily average concentrations were reported for three consecutive dates. Overall, average Pb 

concentrations for the Houston site were 0.0035 μg/m3

 for PM2.5 and 0.0050 μg/m3 32 for PM10. 

33 Daily average concentrations of ambient Pb associated with each particle size fraction assessed 

34 for the three sampling dates are presented in Exhibit D-2. 

 

1

 The U.S. Census defines a housing unit as a house, an apartment, a mobile home, a group of rooms, or a single 

room that is occupied (or if vacant, is intended for occupancy) as separate living quarters. Separate living quarters 

are those in which the occupants live and eat separately from any other persons in the building and which have 

direct access from the outside of the building or through a common hall. The occupants may be a single family, one 

person living alone, two or more families living together, or any other group of related or unrelated persons who 

share living arrangements. The Census defines a household as including “all the persons who occupy a housing 

unit.” 
 Appendix D 

 

ICF International D-3 DRAFT – December 2006 

1 Exhibit D-2. Air Monitoring Data for Pb, DRI Site in Houston, Texas 

Daily Average Pb Concentration, μg/m3

Sampling Date PM2.5 Fraction PM10 Fraction 

2/1/01 0.0018 0.0053 

2/2/01 0.0033 0.0045 

2/3/01 0.0035 0.0056 

Average 0.0030 0.0050 

2 

3 Six sets of ambient Pb concentrations are also available in EPA’s Air Quality System (AQS) for 

4 three locations in Houston, including two from 1999 and four from 2005 (USEPA 2006). Mean 

5 concentrations for each set of measurements from AQS are summarized in Exhibit D-3. Because 

6 these measurements were taken in developed urban or suburban locations (and they are identified 

7 by street address), it seems likely that the monitoring stations for each were located close to a 

8 roadway; however, no information was available from AQS regarding how close to the roadway 

9 these monitoring stations are located. 

10 

11 Exhibit D-3. AQS Ambient Pb Measurements for Houston 

Particle 

Size 

Fraction 

Year No. of 

Observations 

Location Reported Land 

Use/Location Type 

Mean of Data Set 

(μg/m3

) 

1999 48 1262 1⁄2 Mae Dr. Commercial/urban and 

center city 0.005 

TSP 

2005 35 1262 1⁄2 Mae Dr. Commercial/urban and 

center city 0.016 

1999 81 9525 Clinton Dr. Industrial/suburban 0.007 PM10

2005 59 9525 Clinton Dr. Industrial/suburban 0.006 

2005 72 6400 Bissonnet St. Residential/urban and 

center city 0.0031 

PM2.5

2005 35 1262 1⁄2 Mae Dr. Commercial/urban and 

center city 0.0029 

12 

13 Additionally, it is useful to compare Pb concentrations in Houston to those reported for the other 

14 five near roadway sampling locations where DRI conducted PM measurements in 2000 and 2001 

15 (ICF 2006). Average Pb concentrations for the PM10 size fraction from the other five DRI 

16 monitoring sites are presented in Exhibit D-4. 

17 

18 Exhibit D-4. Average Measured PM10 Pb Concentrations for DRI Monitoring Locations 

(Other than Houston)a 19 

Location Measurement Dates Average Pb Concentration 

(μg/m3

) 

Birmingham, AL Dec. 17 and 19, 2000 0.0024 

Las Vegas, NV Feb. 20 and 22-23, 2001 0.00296 

El Paso, TX March 3 and 9-11, 2001 0.00708 

Albany, NY Dec. 8-9, 2000 0.0123 

Long Beach, CA Feb. 16-17, 2001 0.0164 a 20 ICF 2006 

21 
 Appendix D 

 

ICF International D-4 DRAFT – December 2006 

1 For additional comparison, the average annual PM10 Pb concentrations from AirData monitor 

2 results across the United States for the year 2005 (USEPA 2006) were compared to the average 

PM10 Pb concentration for the DRI site in Houston of 0.0030 μg/m3 3 . Exhibit D-5 shows the 

4 distribution of PM10 Pb for 36 monitors across the United States (with average monitored Pb 

5 concentrations sorted in ascending order). The average PM10 Pb concentrations detected at the 

36 monitors ranged from 0.0018 to 0.04 μg/m3 6 . The average PM10 Pb concentration for the DRI 

7 site in Houston is indicated on the figure. 

8 

9 Exhibit D-5. Average Annual PM10 Across the United States for 2005 

10 Compared to PM10 at the Houston DRI Site 

0

0.005

0.01

0.015

0.02

0.025

0.03

0.035

0.04

Average Lead PM10 (ug/m3

)

..

..

...

...

..

..

...

..

..

.

.

.

....

.

....

.

..

Monitor (N=36)

11 12 

13 D.3 Soil Measurements

14 

15 No soil measurements were identified in close proximity to this study area. Consequently, 

16 surrogate data for Houston or a similar location were sought through a literature search. Several 

17 studies were identified that reported Pb concentrations in surface soil adjacent to United States 

18 and Canadian roadways, as well as related information on Pb levels on road surfaces and in 

19 urban areas. Relevant information from this literature search is summarized in Exhibit D-6. As 

20 described in Sections 3.3.4 and 4.3.3, Pb measurements reported by Turer and Maynard (2003) 

21 for surface soil near an interstate entrance ramp in Corpus Christi, Texas were used to derive the 

22 soil concentrations used in the near roadway urban case study. 

23 

24 Exhibit D-6 is intended to convey the most relevant soil measurements that were identified with 

25 regard to the near roadway urban case study (i.e., surface soil measurements from a near 

26 roadway location). As a result, only studies that conducted measurements in soil in the recent 

27 past (approximately within the last decade) are included here. In many instances, additional 

28 measurements were collected or other analyses using the results were conducted by the 

29 investigators; these details are not included here. Information in this exhibit is ordered 

30 alphabetically by primary author. 

31 

Houston DRI Site = 0.0050 μg/m3
 Appendix D 

 

ICF International D-5 DRAFT – December 2006 

Exhibit D-6. Selected Data – Pb in Surface Soil Near Roadways 

and Related Urban Measurements 

Study 

Citation 

Location and Sampling 

Scheme 

Reported Pb 

Concentration(s) 

(total Pb unless otherwise 

specified) 

Other Relevant Information 

Chinreje et 

al. 2004 

• Gainesville, FL (relatively 

undeveloped, low 

population/traffic density) 

and Miami, FL (developed, 

high population/traffic 

density) 

• Sampled locations 

according to land use 

characterization residential, 

commercial, public parks, 

public buildings 

• Miami: median 98 ppm; 

55% of samples were 51-

200 ppm 

• Gainesville: median 15 

ppm; 87% of samples <50 

ppm 

• Concluded lower Pb in 

Gainesville was due to lower 

inputs (low industrial activity, 

less traffic) but also increased 

Pb mobility/low retention (lower 

pH, OC, and clay content vs. 

Miami soils). 

• Pb patterns with land use 

slightly different between 2 

cities. Residential and 

commercial areas generally 

higher in Pb. 

Filippelli et 

al. 2005 

• Indianapolis, IN 

• Sampled on transects 

along urban and suburban 

roadways; 10-40 m from 

road 

• Surface sample depth: 0-5 

cm 

• Urban roadways: 400 to 

>900 ppm 

• Suburban roadways: 100 to 

<200 ppm 

• Concentrations diminished with 

increasing distance from 

roadside. 

• Also sampled at various urban 

locations to investigate Pb from 

diffuse (non-specific) sources. 

• Conducted predictive blood-Pb 

modeling using soil 

measurements. 

Gillies et al. 

1999 

• Urban Nevada 

• Sampled dust at surface of 

soil or paved road 

• Sampling locations 

included playas (dry lake 

bed/salt flat), paved roads, 

and construction sites 

• Reported relative 

abundance of Pb in PM2.5

by weight percent 

• Playa and construction site 

0.001-0.01% 

• Paved road 0.01-0.1% 

• Approx. enrichment factors 

of Pb in PM2.5: playa ~1-10; 

paved road ~30; 

construction site ~5-10 

• Pb enrichment factors 

slightly lower for PM 10-2.5 

μm for playa and paved 

road; approx. same for 

construction site 

• Results were used in source 

apportionment analysis for 

resuspended PM. 

Hafen and 

Brinkmann 

1996 

• Tampa, FL 

• Sampled 32 transects at 

roadways, 7 samples per 

transect; 3 cm to 2.2 m 

from road; surface sample 

depth: 0-3 cm 

• 224 samples total, 7 

samples/transect 

• Range: 40 to 3,360 ppm 

• Mean Pb concentrations by 

distance from road were 

relatively tightly clustered; 

means ranged from 200 

ppm (>0.8 m) to 440 ppm 

(0.24 m) 

• Looked for trends in 

concentration with distance and 

other factors on a near-term 

scale (within 2.2 m of road); 

weak negative correlation with 

distance from roadway 

observed. 

Lejano and 

Ericson 

2005 

• Pacoima, CA (near Los 

Angeles) 

• 210 samples at transects 

along freeways spaced 

about 1 km apart; surface 

sample depth: 0-2.54 cm; 

samples collected from 

within 150 m of the 

roadway 

Total range not presented; 

mean concentrations of 5 

roadways range from 43 to 

112 ppm (mean for one road 

up to 232 ppm if one outlier 

included) 

• Mean concentrations for 3 

“nonvehicular” sample sites: 52, 

67, 111 ppm. 

• Concluded that historical 

vehicular emissions appear to 

be primary and most 

bioavailable source of Pb in 

soil. 
 Appendix D 

 

ICF International D-6 DRAFT – December 2006 

Exhibit D-6. Selected Data – Pb in Surface Soil Near Roadways 

and Related Urban Measurements 

Study 

Citation 

Location and Sampling 

Scheme 

Reported Pb 

Concentration(s) 

(total Pb unless otherwise 

specified) 

Other Relevant Information 

Li 2006 

• Burnaby, Canada 

• Three transects across 

highway; samples at 0.1 m 

intervals from road 

• 139 samples from 17 

borehole locations; surface 

sample depth: 0-10 cm 

Results for three transects: 

• (lower traffic/speed): 7-1020 

ppm 

• 25-925 ppm 

• 303-1650 ppm 

• Sequential extractions were 

also performed to check 

sorption/bioavailability. 

Li and 

Preciado 

2004 

• British Columbia, Canada, 

Hwy. 17 

• 2 transects along highway; 

0 to 10 m from road; 1 m 

intervals 

• Surface sample depth: 0-5 

cm 

• Also sampled on-road dust 

and measured Pb 

deposition rates adjacent to 

roadway 

• Roadside soil results: ~100 

ppm for samples 0 m from 

roadside; <50 ppm for all 

samples 1-10 m from 

roadside 

• On-road dust: Pb content 

ranged from 51-181 mg/kg 

• PM deposition adjacent to road 

decreases by ~half within 10 m 

of roadway 

• Pb deposition rates on soils 

within 12 m of roadway range 

from 1.5 to 5 μg/m2-day; no 

clear pattern vs. distance. 

Sheets et 

al. 2001 

• Springfield, MO 

• Multiple sampling locations, 

including 3 near heavytraffic streets and 2 more 

than 30 m from residential 

street 

• Surface sampling depth: 0-

1 cm 

• Averages for surface 

samples at 5 roadside 

locations ranged from 18-

179 ppm 

• Correlates soil measurements 

taken in 1999 with airborne Pb 

monitoring from 1979-1984 

(when gasoline was leaded) 

Shinn et al. 

2000 

• Chicago, IL; sampled bare 

soil in 4-block urban 

residential area and 

measured Pb; developed 

surface plots of Pb levels 

via kriging 

• Analyzed patterns by 

reviewing historical data for 

potential sources 

• Mean soil Pb – 2180 ppm; 

median – 1775 ppm; range 

was 175-7935 ppm 

• Pb distribution in soil indicates 

non-random Pb sources 

• Pb surface soil patterns linked 

to existing and previous 

potential sources within study 

area as well as nearby street 

with high traffic volume. 

Speiran 

1998 

• Interstate 95 north of 

Richmond, VA (Exit 86 to a 

moderately traveled, twolane road) 

• 59 soil samples from 19 

sites 

• Varying distances from 

interstate and exit ramp 

• Surface sampling depth: 0-

7.6 cm 

• Range: 46 to 1200 ppm • Spatial variations in 

concentrations indicate that 

highway lanes were a source of 

metals, including Pb. 

• Concentrations decrease with 

increasing distance from 

roadside. 
 Appendix D 

 

ICF International D-7 DRAFT – December 2006 

Exhibit D-6. Selected Data – Pb in Surface Soil Near Roadways 

and Related Urban Measurements 

Study 

Citation 

Location and Sampling 

Scheme 

Reported Pb 

Concentration(s) 

(total Pb unless otherwise 

specified) 

Other Relevant Information 

Sutherland 

and Tolosa 

2001 

• Manoa basin, Oahu, Hawaii 

• Sampled 2 transects at low 

speed roadways (near park 

and school) out to 50 m 

from road 

• First sample (0 m) from 

“road deposited sediment 

(RDS)” – curbside area at 

edge of road 

• Surface sampling depth: 0 

to 2.5 cm 

• Park transect: max of 375 

ppm (5 m from road); RDS 

285 ppm 

• School transect: max of 

200 ppm in RDS; all soil 

samples 25-50 ppm, out to 

50 m 

• Measurements for both 

transects drop to <50 ppm 

within 5-10 m 

• Local background soil 

concentrations reported as 

12-13 ppm 

• Concluded that “urban 

architecture” (sidewalks, grass, 

topography) impacts Pb 

concentrations. 

• Pb conc. vs. distance plotted 

using data from 10 studies from 

1970s-1980s; relationship 

generally linear when log of 

concentration and distance are 

used. 

• 5 supplemental soil samples 

collected from grass-covered 

recreational field >100m from 

roadway. 10 “control” locations 

sampled from relatively 

undisturbed areas. 

Sutherland 

et al. 2000 

• Manoa watershed, Oahu, 

Hawaii 

• Sampled of road deposited 

sediment (in curb at 

roadside) and roadside 

soils within 2 m of road 

surface; 78 samples 

• Daily traffic volumes <3200 

to 45,200 vehicles/day 

• Surface sampling depth: 0 

to 2.5 cm 

• Range of total Pb in 

roadside soil 10-4870 ppm 

• Median Pb conc. 56 ppm 

(includes road deposited 

sediment, but highest levels 

seen in roadside soil) 

• Enrichment ratios were 

calculated based on the degree 

of anthropogenic influence on 

Pb levels; Pb was the most 

significantly enhanced metal vs. 

Al, Cu, and Zn. 

• Enrichment ratio for roadside 

Pb was 4 to 5 times higher than 

in background soils. 

Teichman et 

al. 1993 

• California, Alameda Co., 

adjacent to Interstate 880 

• ~200 samples were taken 

in residential yards and 

parks/playgrounds in 

communities adjacent to I880 and within 1 mile 

radius of I-880 

• Surface sampling depth: 

ranged from surface to 1.27 

to 1.91 cm deep 

• Residential soil 

measurements: avg. 567.7 

ppm; range 195-2026 ppm 

• Parks and playgrounds 

measurements: avg. 136.5 

ppm; range 6-565 ppm 

• “Gasoline emissions” cited as a 

likely urban source. 

Turer and 

Maynard 

2003 

• Corpus Christi, TX; 2 

sampling sites; 1 transect 

per site 

• Site 1: city center (heavy 

traffic); 12 samples; 2 to 12 

m from road; 12 m from 

road; surface sampling 

depth: 0-32.5 cm 

• Site 2: near oil refinery; 10 

samples; 0.5 to 4 m from 

road; surface depth: 0.0 

and 0-2.5 cm. 

• Site 1: 210-770 ppm 

• Site 2: 140-390 ppm 

• Highest concentrations at 

both sites were observed 

closest to roadway (within 

3.5 m) 

• Results were compared to 

Cincinnati metal contamination 

in near-highway soils, and 

organic matter was determined 

to be the key to Pb mobility. 
 Appendix D 

 

ICF International D-8 DRAFT – December 2006 

Exhibit D-6. Selected Data – Pb in Surface Soil Near Roadways 

and Related Urban Measurements 

Study 

Citation 

Location and Sampling 

Scheme 

Reported Pb 

Concentration(s) 

(total Pb unless otherwise 

specified) 

Other Relevant Information 

Turer et al. 

2001 

• Cincinnati, OH; Interstate 

75 through city; 58 samples 

• Sampling conducted 

adjacent to highways on 

median between lanes 

(within ~50m of road) 

• Surface sampling depth: 0-

1 cm; also sampled 1-5 cm 

• Range for 0-1 cm samples: 

166-942 ppm 

• Range for 1-5 cm samples: 

59-1073 ppm 

• Some samples taken at 

depth of 10-15 cm 

contained total Pb between 

1000-2000 ppm 

• Performed mass balance 

analysis to determine fate of Pb 

(total emitted historically in 

exhaust vs. Pb currently in soil). 

Results suggest 60% of Pb has 

been lost from study area 

(roadsides). 

• Removal via wind-blown dust 

was proposed as most likely 

remobilization mechanism; 

surface runoff may be lesser 

removal mechanism. 

Young et al. 

2001 

• California highways; 3 

locations (not identified) 

• Samples taken 1.5 m from 

roadway 

• Sampling depth not 

specified 

• Pb conc. reported 38, 46, 

322 ppm 

• Pb content, potential PM10 yield, 

and Pb emission potential via 

resuspension measured for all 

samples. 

1 

2 D.4 Modeled Indoor Dust Concentrations 

3 

4 A summary of indoor dust concentrations for the near roadway urban case study estimated using 

5 the AGG model is presented in Section 4.3.4, which also summarizes the number of census 

6 blocks and children corresponding to each of the three modeled indoor dust concentrations. 

7 Exhibit D-7 presents the expanded data for each census block located inside (or partially 

8 overlapping with) the study area. 

9 

Exhibit D-7. Near Roadway Urban Case Study - Modeled Indoor Dust Concentrations 

Predicted House Dust Concentrations (μg/g) Census block ID Estimated Number of 

Childrena

AGG Non-Air AGG Air-Rel. Total 

5001007 10 31.3 40 71 

5001008 2 31.3 40 71 

5001011 1 31.3 40 71 

5002000 57 31.3 40 71 

5002001 46 31.3 40 71 

5002002 1 31.3 40 71 

5003000 1 31.3 40 71 

5003001 1 31.3 40 71 

5003007 35 31.3 40 71 

5003008 0 31.3 40 71 

5003009 1 31.3 40 71 

5003011 1 31.3 40 71 

5003012 3 31.3 40 71 

5003014 1 31.3 40 71 
 Appendix D 

 

ICF International D-9 DRAFT – December 2006 

Exhibit D-7. Near Roadway Urban Case Study - Modeled Indoor Dust Concentrations 

Predicted House Dust Concentrations (μg/g) Census block ID Estimated Number of 

Childrena

AGG Non-Air AGG Air-Rel. Total 

5003015 1 31.3 40 71 

5003021 3 31.3 40 71 

5003022 2 31.3 40 71 

5003023 3 31.3 40 71 

5003024 0 31.3 40 71 

5003025 1 31.3 40 71 

4002002 54 31.3 40 71 

4001005 0 31.3 40 71 

4001006 1 31.3 40 71 

4001007 2 31.3 40 71 

5003003 1 31.3 40 71 

5001008Z 1 31.3 62 94 

5001009Z 8 31.3 62 94 

5002000Z 23 31.3 62 94 

5002001Z 23 31.3 62 94 

5002002Z 1 31.3 62 94 

5003001Z 0 31.3 62 94 

5003007Z 14 31.3 62 94 

5003008Z 0 31.3 62 94 

5003009Z 1 31.3 62 94 

5003010Z 0 31.3 62 94 

5003011Z 0 31.3 62 94 

5003012Z 3 31.3 62 94 

5003013Z 2 31.3 62 94 

5003014Z 2 31.3 62 94 

5003015Z 2 31.3 62 94 

5003021Z 0 31.3 62 94 

4001007Z 1 31.3 62 94 

5003003Z 0 31.3 62 94 

5001009Y 2 31.3 146 178 

5002000Y 4 31.3 146 178 

5002002Y 0 31.3 146 178 

5003008Y 0 31.3 146 178 

5003009Y 0 31.3 146 178 

5003012Y 1 31.3 146 178 

5003013Y 0 31.3 146 178 a 1 Value represents the estimated number of children ages 0-7 residing within that census block that also reside within 

2 the study area. 
 Appendix D 

 

ICF International D-10 DRAFT – December 2006 

1 References 

2 

3 Chirenje, T., Ma, L.Q., Reeves, M., and Szulczewski, M. (2004) Lead distribution in near4 surface soils of two Florida cities: Gainesville and Miami. Geoderma. 119(2):113-120. 

5 Filippelli, G.M., Laidlaw, M.A.S., Latimer, J.C., and Raftis, R. (2005) Urban lead poisoning and 

6 medical geology: An unfinished story. GSA Today. 15(1):4-11. 

7 Gillies, J.A., O'Connor, C.M., Mamane, Y., and Gerler, A.W. (1999) Chemical profiles for 

8 characterizing dust sources in an urban area, Western Nevada, USA. In: Livingstone, I., ed. 

9 Aeolian geomorphology: Papers from the 4th International Conference on Aeolian Research 

10 1998, Oxford, UK. Zeitschrift fuer Geomorphologie. 116(S):19-44. 

11 Hafen, M.R. and Brinkmann, R. (1996) Analysis of lead in soils adjacent to an interstate 

12 highway in Tampa, Florida. Environmental Geochemistry and Health. 18(4):171-179. 

13 ICF International. (2006) Ambient PM2.5 and PM10 Sampling Conducted by Desert Research 

14 Institute (DRI) at Seven Locations – Pb Results Used in Pb NAAQS Pilot Phase Risk Assessment. 

15 Memorandum to Zach Pekar, EPA, from David Burch and Arlene Rosenbaum. November.

16 Lejano, R.P. and Ericson, J.E. (2005) Tragedy of the temporal commons: Soil-bound lead and 

17 the anachronicity of risk. Journal of Environmental Planning and Management. 48(2):301-320. 

18 Li, L.Y. and Preciado, H. (2004) Air, runoff and soil monitoring of highway pollution by metals 

19 along highway corridors. In Brebbia, C.A., ed. Air Pollution XII (Air Pollution 2004) United 

20 Kingdom: Wessex Institute of Technology. 

21 Li, L.Y. (2006) Retention capacity and environmental mobility of Pb in soils along highway 

22 corridor. Water, Air, and Soil Pollution. 170:211-227. 

23 Sheets, R.W., Kryger, J.R., Biagioni, R.N., Probst, S., Boyer, R., and Barke, K. (2001) 

24 Relationship between soil lead and airborne lead concentrations at Springfield, Missouri, USA. 

25 Science of Total Environment. 271:79-85. 

26 Shinn, N.J., Bing-Canar, J., Cailas, M., Peneff, N., and Binns, H.J. (2000) Determination of 

27 spatial continuity of soil lead levels in an urban residential neighborhood. Environmental 

28 Research. 82(A):46-52. 

29 Speiran, G.K. (1998) Selected heavy metals and other constituents in soil and stormwater runoff 

30 at the Interstate 95 Interchange near Atlee, Virginia, April 1993-May 1997. U.S. Geological 

31 Survey. Water-Resources Investigations Report 98-4115, 39p. 

32 Sutherland, R.A., Tolosa, C.A., Tack, F.M.G., and Verloo, M.G. (2000) Characterization of 

33 selected element concentrations and enrichment ratios in background and anthropogenically 

34 impacted roadside areas. Archives of Environmental Contamination and Toxicology. 38:428-438. 
 Appendix D 

 

ICF International D-11 DRAFT – December 2006 

1 Sutherland, R.A. and Tolosa, C.A. (2001) Variation in total and extractable elements with 

2 distance from roads in an urban watershed, Honolulu, Hawaii. Water, Air, and Soil Pollution. 

3 127(4):315-338. 

4 Tiechman, J., Coltrin, D., Prouty, K., and Bir, W.A. (1993) A survey of lead contamination in 

5 soil along Interstate 880, Alameda County, CA. American Industrial Hygiene Association 

6 Journal. 54(9):557-559. 

7 Turer, D., Maynard, J.B., and Sansalone, J.J. (2001) Heavy metal contamination in soils of urban 

8 highways: Comparison between runoff and soil concentrations at Cincinnati, Ohio. Water, Air, 

9 and Soil Pollution. 132:293-314. 

10 Turer, D.G. and Maynard, J.B. (2003) Heavy metal contamination in highway soils. Comparison 

11 of Corpus Christi, Texas and Cincinnati, Ohio shows organic matter is key to mobility. Clean 

12 Technologies and Environmental Policy. 4(4):235-245. 

13 U.S. Environmental Protection Agency (USEPA). (2006) AirData: Access to Air Pollution Data. 

14 Available at http://www.epa.gov/air/data. 

15 Young, T.M., Heeraman, G., Sirin, G., and Ashbaugh, L. (2001) Resuspension of Soil as a 

16 Source of Airborne Lead. Final Project Report from Air Quality Group, Crocker Nuclear Lab to 

17 the Research Division of the Air Resources Board. Contract No. 97-325. August. 

Appendix E 

Summary Data for the Ecologically Vulnerable Case Study 
 

 
 Appendix E 

 

ICF International E-1 DRAFT – December 2006 

1 Appendix E presents a detailed data summary and discussion of environmental data sources for 

2 the Hubbard Brook Experimental Forest (HBEF). A literature search was performed to obtain 

3 published studies pertaining to Pb movement throughout the environment at HBEF, with a 

4 particular focus on trends in Pb concentrations in and across three media: air (or deposition from 

5 air), soil, and surface water. The findings for each medium are presented here. 
 Appendix E 

 

ICF International E-2 DRAFT – December 2006 

1 E.1 Air Deposition Inputs 

2 

3 Pb concentration data in ambient air were not located in the literature search; however, two 

4 studies of atmospheric Pb input (in precipitation and bulk deposition) to HBEF were reviewed. 

5 Johnson et al. (1995) used available Pb concentration data from Watershed 6 (W6) and areas 

6 proximate to W6 at HBEF together with historical data for Pb consumed in gasoline to construct 

7 a regression model used to estimate Pb inputs for the period 1926 to 1989. They analyzed 

8 precipitation inputs using measured water fluxes and annual volume-weighted mean Pb 

9 concentrations. The authors reported a significant decline in Pb deposition from 1975 (during a 

10 period of high Pb deposition) to 1989 (during a period of low Pb deposition). Specifically, the 

11 annual volume-weighted mean Pb concentration in bulk precipitation declined from 23 μg/L in 

12 1975 to 0.85 μg/L in 1989, while the estimated input of Pb in bulk deposition fell from 396 

g·ha ̄1

·yr ̄1 in 1976 to 12.7 g·ha ̄1·yr ̄1 13 in 1989. 

14 

15 Wang et al. (1995) used clean techniques to analyze monthly precipitation samples collected by 

16 HBEF staff in 1993. Pb levels in bulk precipitation were approximately 0.45 to 0.80 ppb across 

17 the sampling period. The authors indicated that they estimated total atmospheric input of Pb 

18 from their bulk precipitation data; however, these estimations were not reported. Reported 

values for Pb fluxes in bulk precipitation were approximately 7 g·ha ̄1

·yr ̄1 19 for the sampling 

20 period. Furthermore, based on their findings, the authors suggest that atmospheric Pb inputs do 

21 not directly affect Pb levels in streams at HBEF because deposited Pb is almost entirely retained 

22 in the soil profile. 

23 

24 E.2 Soil 

25 

26 Before presenting the Pb concentration data for soils at HBEF, it is useful to discuss the soil 

27 profile terms and abbreviations. A soil profile consists of various soil layers, or horizons, that 

28 have different characteristics (e.g., color, structure, texture, rupture-resistance class, levels of 

29 carbonates), and a general distinction is made between organic soils and mineral soils based on 

30 the proportion of organic carbon present (Soil Survey Staff 1999). Capital letters, sometimes 

31 with subscripts or lower case letters, are used to denote the various soil horizons, which are 

32 identified below. 

33 

34 • An O horizon is predominately organic material and may be the soil surface, though O 

35 horizons may also be buried beneath other horizons. Subscripts or lowercase letters 

36 indicate particular features of the horizon. Oa, Oe, Oi horizons are differentiated by the 

37 rubbed fiber content by percent of volume (“a” is lowest, “i” is highest). 

38 

39 • An A horizon is a layer of mineral soil present at the surface or below an O horizon. 

40 

41 • An E horizon is similar to the A horizon, but has a concentration of sand and silt 

42 particles. 

43 

44 • B horizons occur below an A, E, or O horizon and are characterized by obliteration of 

45 most of the original rock structure. The Bh horizon is characterized by the alluvial 
 Appendix E 

 

ICF International E-3 DRAFT – December 2006 

1 accumulation of organic matter, while the Bs horizon features the alluvial accumulation 

2 of sesquioxides and organic matter (Soil Survey Staff 1993). 

3 

4 Several studies provide insight regarding trends in Pb concentrations in soils at HBEF. Yanai et 

al. (2004) collected forest floor1 5 samples seven times from Watershed 6 (W6) between 1976 and 

6 1997 and three times from Watershed 1 (W1) between 1996 and 2000 (see Exhibit E-1). While 

7 W1 was subject to experiments in November 1999, the authors assumed that the treatment–

8 experimental addition of calcium silicate would not influence Pb transport dynamics in the forest 

9 floor (Yanai et al. 2004). Both watersheds are similar in tree species composition and stand age, 

as well as watershed area (W6=13.2 ha; W1=11.8 ha) and aspect (W6= S32oE; W1= S22o 10 E). 

11 HBEF soils are acidic, so both watersheds are acidified (Hubbard Brook Information Oversight 

12 Committee 2001). Collected plots were 15x15-cm blocks and were selected randomly within 

13 three elevation ranges. Samples were dried and ground using a Wiley mill. Organic mass was 

14 estimated using loss on ignition. Inductively coupled plasma spectroscopy (ICP) was used to 

15 analyze samples (dissolved in nitric acid [HNO3]). The authors reported a 32 percent decline in 

16 forest floor Pb concentrations at HBEF from 1976 to 2000. As shown in Exhibit E-1, Pb 

17 concentrations for the data set ranged from about 38 mg/kg (collected from W1 in 2000) to 115 

18 mg/kg (collected from W6 in 1978). Changes in Pb content and concentrations within soil 

19 horizons and with elevation were also analyzed. Results of the horizon analysis show that Pb has 

20 become more concentrated at lower depths over time. Pb content in the forest floor did not 

21 necessarily increase with elevation (Pb concentrations did increase with elevation because the 

22 forest floor mass declines with elevation). 

 

1

 Yanai et al. (2004) define the “forest floor” as the O-A soil horizons. 
 Appendix E 

 

ICF International E-4 DRAFT – December 2006 

1 Exhibit E-1. Pb Concentration in Forest Floor Samples Analyzed for 

Hubbard Brook Experimental Forest a 2 

Stand Mean Pb Concentration

Age 

(yr) 

Sample 

Year Horizon b

n mg/kg Standard 

Error

Stand W6 (Elevation 550-790 m) 

66 1976 FF 59 77.77 4.84 

67 1977 FF 58 98.42 6.06 

68 1978 FF 58 86.41 4.26 

72 1982 FF 68 82.10 3.53 

77 1987 FF 70 69.84 3.11 

82 1992 FF 80 68.09 3.15 

87 1997 FF 87 59.89 2.73 

68 1978 Oa 58 76.16 4.10 

77 1987 Oa 70 66.73 3.41 

82 1992 Oa 80 68.12 3.54 

87 1997 Oa 87 74.24 3.84 

68 1978 Oie 58 115.01 4.01 

77 1987 Oie 70 75.66 3.47 

82 1992 Oie 80 63.79 3.15 

87 1997 Oie 87 40.57 2.51 

Stand W1 (Elevation 490-740 m) 

86 1996 FF 84 62.04 3.03 

88 1998 FF 97 60.59 2.48 

90 2000 FF 100 55.00 2.04 

86 1996 Oa 84 67.44 3.43 

88 1998 Oa 97 73.98 3.43 

90 2000 Oa 100 66.70 2.82 

86 1996 Oie 84 53.21 3.36 

88 1998 Oie 97 43.80 2.58 

90 2000 Oie 100 38.42 1.86 a 3 Modified from Yanai et al. (2004). b

 FF= forest floor (the authors define this as the O-A horizons); Oa 4 = 

5 organic horizon with lower rubbed fiber content (study samples include 

the A horizon [a mineral layer] with the Oa horizon); Oie 6 = organic 

7 horizons with higher rubbed fiber content.

8 

9 Johnson et al. (1995) also noted a downward movement of Pb in soil layers. The authors used 

10 available data from Watershed 6 (W6) and areas proximate to W6 to estimate Pb fluxes for 

HBEF. Forest floor2 11 samples were analyzed using digestion in 6 mol/L HNO3 and mineral soils 

12 were assessed using digestion in concentrated HNO3 and hydrofluoric acid (HF). Pb was 

13 measured using flame atomic absorption spectrophotometry. Using the flux estimates and 

14 regression analysis, they estimated the net loss of Pb from the forest floor to be 44 g·ha ̄1·yr ̄1 

15 from 1982 to 1987, while the accumulation rate of Pb in the mineral soil was approximately 

 

2

 Johnson et al. (1995) define the “forest floor” as the O soil horizon. 
 Appendix E 

 

ICF International E-5 DRAFT – December 2006 

1 75 g·ha ̄1·yr ̄1 over the same period. Additionally, they predicted further accumulation of Pb in 

2 the mineral soil, which might lead to higher Pb concentrations in stream water; however, the 

3 authors noted uncertainty regarding the timeframe for when Pb concentrations in stream water 

4 might become elevated. 

5 

6 Wang and Benoit (1996) analyzed soil solutions (pH 4.0 to 4.7) to study Pb speciation and Pb 

7 mobility between the forest soil surface and the lower mineral soil layer at a watershed 

8 immediately west of W6. Soil solutions were collected monthly from September to December 

9 1993 and June to July 1994. Based on their findings, the authors suggested that the movement of 

10 Pb from the Oa horizon to the Bh and Bs horizons occurs via organic colloids or as free-dissolved 

Pb2+ 11 ions and that it is immobilized in the mineral layer as the Pb forms are adsorbed. The 

12 authors further suggested that either increases or decreases in pH levels may foster higher Pb 

13 mobility. Moreover, they explained that lower pH might increase Pb mobility by increasing freedissolved Pb2+ 14 levels, while higher pH may increase mobility as more Pb is complexed with 

15 dissolved organic carbon (DOC) and inorganic ligands. 

16 

17 E.3 Surface Water 

18 

19 Wang et al. (1995) collected stream water samples from Bear Brook (west of HBEF reference 

20 watershed W6). Samples were collected in 1993 on a monthly basis over a 1-year period. The 

21 investigators reported using rigorous cleaning techniques to prevent contamination of water 

22 samples (e.g., sample collection equipment was acid-cleaned; sample handling was conducted in 

23 a pressure positive clean room). Stream samples were collected, filtered, and acidified using 

24 ultrapure HNO3. Pb was measured using graphite furnace atomic absorption spectrophotometry 

25 (GFAAS). The reported stream dissolved Pb concentrations ranged from about 5 to 15 parts per 

26 trillion (ppt) for the sampling period. The authors noted that the measured Pb levels in their 

27 study were 10 to 100 times lower than those reported in Driscoll et al. (1988), concluding that 

28 this discrepancy is mostly likely due to measurement error resulting from prior use of nonclean 

29 techniques rather than to a real change in Pb levels. Nevertheless, both studies found that the 

30 soil profile serves as a Pb sink, drastically reducing dissolved Pb levels as it moves through the 

31 soil layers to streams. Wang et al. (1995) reported a reduction in dissolved Pb of about 5 ppb to 

32 about 5 ppt as it moves from the Oa horizon to streams, concluding that the contribution of 

33 dissolved Pb from soils to streams is insignificant (less than 0.2 g·ha ̄1·yr ̄1). 
 Appendix E 

 

ICF International E-6 DRAFT – December 2006 

1 References

2 

3 Driscoll, C., Fuller, R., and Simone, K. (1988) Longitudinal variations in trace metal 

4 concentrations in a northern forested ecosystem. Journal of Environmental Quality. 17(1):101-

5 107. 

6 Hubbard Brook Information Oversight Committee. (2001) Overview. Available at 

7 http://www.hubbardbrook.org/research/overview/hbguidebook.htm. 

8 Johnson, C., Siccama, T., Driscoll, C., Likens, G., and Moeller, R. (1995) Changes in lead 

9 biochemistry in response to decreasing atmospheric inputs. Ecological Applications. 5(3):813-

10 822. 

11 Soil Survey Division Staff. (1993) Soil Survey Manual. Soil Conservation Service. Department 

12 of Agriculture Handbook 18. 

13 Soil Survey Division Staff. (1999) Soil Taxonomy. Soil Conservation. U.S. Department of 

14 Agriculture Handbook 436, Second Edition. 

15 Wang, E., Bormann, F., and Benoit, G. (1995) Evidence of complete retention of atmospheric 

16 lead in the soils of northern hardwood forested ecosystems. Environmental Science & 

17 Technology. 29(3):735-739. 

18 Wang, E. and Benoit, G. (1996) Mechanisms controlling the mobility of lead in the spodosols of 

19 a northern hardwood forest ecosystem. Environmental Science & Technology. 30(7):2211-2219. 

20 Yanai, R., Ray, D., and Siccama, T. (2004) Lead reduction and redistribution in the forest floor 

21 in New Hampshire northern hardwoods. Journal of Environmental Quality. 33(1):141-148.
 

 

 

Appendix F 

Primary Pb Smelter Case Study Media Concentrations 
 

 

 
 

 

ICF International F-1 DRAFT – December 2006 

1 As discussed in Chapter 4, the media concentrations for the primary Pb smelter case study were 

2 estimated using a combination of modeling approaches and monitoring data. Additional details 

3 for estimating media concentrations for the primary Pb smelter case study location are provided 

4 in this appendix. Section F.1 is a presentation of Pb air concentrations, dry deposition rates, and 

5 soil Pb concentrations obtained from modeling the area around the primary Pb smelter. Section 

6 F.2 presents the measured soil, surface water, and sediment data analyzed for the ecological risk 

7 assessment. Section F.3 presents the analysis performed for identifying the modeling approach 

8 that was ultimately selected for estimating indoor dust concentrations for residences around the 

9 primary Pb smelting facility.
 

 

ICF International F-2 DRAFT – December 2006 

1 

2 F.1 Primary Pb Smelter Modeled Pb Concentrations for Use in the Human Exposure 

3 and Health Risk Assessments 

4 

5 The first part of Appendix F, comprised of Exhibits F-1 through F-5, provides a summary of the 

6 Pb air concentrations, dry deposition rates, and soil Pb concentrations (based on dry deposition 

7 rates) obtained at the block group and block level from modeling the area around the primary Pb 

8 smelter. Exhibit F-1 shows the ratios of exposure concentrations to ambient air concentrations 

9 from the National Air Toxics Assessment (NATA) for the Census tracts surrounding the primary 

10 Pb smelter. Exhibit F-2 contains block-group and block-level summaries of modeled annual 

11 average air concentrations and dry deposition rates for Pb; counts of population and children 

12 under 7 years of age; modeled annual average exposure concentrations for the general population 

13 and children under 4 years of age; and the modeled soil Pb concentration (based on dry 

14 deposition rates). The modeled Pb air and exposure concentrations, dry deposition rates, and soil 

15 concentrations presented in Exhibit F-2 are based on “current conditions.” In Exhibit F-2, some 

16 of the modeled air concentrations for the primary Pb smelter exceeded the current NAAQS for 

17 Pb. Exhibit F-3 presents modeled air and exposure concentrations, dry deposition rates, and soil 

18 concentrations of Pb for the attainment scenario (i.e., current NAAQS standards are not 

19 exceeded). Exhibit F-4 is a detailed comparison between modeled air concentrations and 

20 monitored concentrations at available air monitors, and Exhibit F-5 is a similar comparison for 

21 deposition results. Further discussion of air and soil concentrations used for the human exposure 

22 and health risk assessments is provided in Chapter 4, Sections 4.1.2 and 4.1.3, respectively. 
Appendix F

Tract FIPS

HAPEM/ASPEN Ratios 

for Children Ages 0 to 

4 Years

17133600200 0.40

17133600300 0.39

29099700104 0.40

29099700601 0.42

29099700603 0.40

29099700605 0.38

29099700700 0.41

29099700800 0.40

29099700900 0.37

29099701000 0.39

Exhibit F-1. Primary Pb Smelter: Ratios of Exposure Concentrations to 

Ambient Air Concentrations from NATA for Study Area

ICF International F-3 DRAFT - December 2006
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

Block 290997006014042 729362.90 4238252.91 9 1 2.72601 1.02295 1.14103 4.65080 12Block 290997006014039 729250.25 4237789.26 65 5 2.68203 1.00645 1.12262 5.19613 29Block 290997006014052 729155.30 4237234.24 41 1 2.32738 0.87337 0.97417 1.25085 21Block 290997006014032 729366.83 4238338.85 24 1 2.06834 0.77616 0.86574 3.82524 16Block 290997006014048 729235.27 4237980.69 1 0 1.87497 0.70360 0.78481 4.05533 19Block 290997006014033 729422.44 4238455.54 34 1 1.82939 0.68649 0.76573 3.22791 16Block 290997006014051 729133.50 4237807.16 44 6 1.29944 0.48762 0.54391 2.82993 18

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

ICF International F-4 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997006014046 729247.56 4238193.09 50 5 1.27820 0.47965 0.53502 2.92586 12Block 290997006014027 729515.21 4238636.90 102 14 0.86550 0.32479 0.36227 1.87320 22Block 290997006014043 729196.78 4238271.42 29 2 0.83214 0.31227 0.34831 1.98609 14Block 290997006014049 729111.36 4238054.93 33 1 0.75855 0.28465 0.31751 1.86272 16Block 290997006014028 729428.81 4238679.89 21 2 0.67228 0.25228 0.28140 1.49391 17Block 290997006014029 729392.81 4238714.21 6 1 0.56946 0.21369 0.23836 1.27541 13Block 290997006014050 729071.48 4238169.93 4 1 0.52522 0.19709 0.21984 1.27528 17

ICF International F-5 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997006014045 729077.95 4238222.62 6 0 0.49061 0.18410 0.20535 1.20626 17Block 290997006014044 729050.34 4238325.84 64 6 0.37145 0.13939 0.15548 0.89760 15Block 290997006014031 729264.54 4238886.27 14 0 0.31235 0.11721 0.13074 0.63665 13Block 290997006015016 729023.43 4238545.21 65 8 0.27218 0.10214 0.11393 0.60448 10Block 290997006014025 729379.76 4239033.93 168 13 0.26914 0.10100 0.11265 0.53910 11Block 290997006015017 728986.31 4238647.15 68 6 0.22852 0.08575 0.09565 0.47404 15Block 290997006015015 729148.25 4238972.84 21 2 0.22613 0.08486 0.09465 0.43252 9

ICF International F-6 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997007002006 729059.80 4236838.74 36 1 0.20643 0.07802 0.08414 0.52405 70Block 290997006014021 729457.48 4239296.65 79 2 0.16434 0.06167 0.06879 0.34521 9Block 290997006015012 728858.19 4238842.45 173 5 0.14254 0.05349 0.05966 0.27291 6Block 290997006015018 728797.34 4238601.41 29 2 0.14210 0.05332 0.05948 0.26696 16Block 290997007002007 728553.89 4237806.92 9 0 0.13955 0.05274 0.05688 0.30351 97Block 290997006015001 728967.45 4239229.25 104 11 0.13606 0.05106 0.05695 0.24255 4Block 290997006015013 728814.37 4239124.95 7 1 0.12861 0.04826 0.05383 0.22434 5

ICF International F-7 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997006015011 728758.89 4238694.23 15 1 0.11967 0.04491 0.05009 0.22659 12Block 290997007002009 728590.84 4238331.02 5 1 0.10478 0.03960 0.04271 0.21515 95Block 290997006015019 728660.34 4238434.97 53 5 0.09604 0.03604 0.04020 0.20131 17Block 290997007002011 728237.58 4237307.25 6 3 0.08899 0.03363 0.03627 0.19556 55Block 290997007002008 728334.88 4238091.55 4 0 0.08653 0.03270 0.03527 0.18440 73Block 290997007002012 728584.39 4236783.90 24 3 0.08548 0.03231 0.03484 0.18560 51Block 290997006014018 729092.12 4239745.74 54 3 0.08244 0.03094 0.03451 0.19380 39

ICF International F-8 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997006014020 728668.17 4239509.57 12 0 0.08166 0.03064 0.03418 0.20622 42Block 290997006014019 728586.89 4239850.59 5 0 0.06262 0.02350 0.02621 0.19987 32Block 290997006014015 728739.72 4240188.13 120 15 0.05931 0.02226 0.02483 0.22838 27Block 290997008001049 728121.83 4237967.39 26 4 0.05749 0.02261 0.02315 0.10466 58Block 290997008001048 728023.45 4237701.08 40 0 0.05472 0.02152 0.02203 0.10775 51Block 290997008001047 727929.43 4237420.75 29 2 0.05199 0.02044 0.02093 0.11297 44Block 290997007002016 728967.40 4236079.82 257 29 0.05192 0.01962 0.02116 0.17830 35

ICF International F-9 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997006015010 728267.10 4238772.22 1 0 0.05069 0.01902 0.02122 0.10524 53Block 290997007002017 729459.02 4235873.61 40 1 0.04686 0.01771 0.01910 0.17274 32Block 290997006014006 728248.57 4241289.02 4 1 0.04638 0.01740 0.01941 0.28438 15Block 290997006014007 728721.50 4240803.57 4 1 0.04470 0.01677 0.01871 0.24092 20Block 290997008001046 727815.41 4237624.53 11 0 0.04431 0.01742 0.01784 0.10202 42BlkGrp 290997006013 728097.71 4240224.82 1350 176 0.04427 0.01661 0.01853 0.20897 23Block 290997007002020 729595.07 4235653.30 34 0 0.04131 0.01561 0.01684 0.18247 27

ICF International F-10 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997006012065 728085.71 4241532.82 9 2 0.04125 0.01548 0.01727 0.25331 13Block 290997006015002 727830.79 4239565.70 469 95 0.04043 0.01517 0.01692 0.18086 28Block 171336003001032 733177.72 4236966.44 11 0 0.04020 0.01725 0.01563 0.26413 13Block 290997007002029 728299.71 4235527.81 253 46 0.03953 0.01494 0.01611 0.20949 22Block 290997008001000 727894.73 4238256.85 20 3 0.03885 0.01528 0.01564 0.07871 46Block 290997008001045 727651.84 4237637.10 30 4 0.03866 0.01520 0.01557 0.10264 37Block 290997007002033 728508.56 4235633.67 89 23 0.03823 0.01445 0.01558 0.17519 24

ICF International F-11 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997006012064 727831.06 4241476.15 5 0 0.03807 0.01429 0.01593 0.23609 13Block 290997008001044 727656.50 4237556.45 31 3 0.03770 0.01482 0.01518 0.09817 37Block 290997007002030 728370.71 4235325.85 64 7 0.03702 0.01399 0.01509 0.20545 20Block 290997007002032 728448.85 4235633.00 35 13 0.03689 0.01394 0.01504 0.16207 24BlkGrp 290997008004 727854.54 4235378.22 2080 197 0.03673 0.01444 0.01479 0.18222 18Block 290997007002014 728207.59 4236027.06 32 2 0.03663 0.01384 0.01493 0.12847 27Block 290997007002031 728365.30 4235630.64 9 4 0.03653 0.01381 0.01489 0.16131 23

ICF International F-12 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997007002028 728275.96 4235183.83 42 6 0.03556 0.01344 0.01449 0.20387 18BlkGrp 290997007003 729089.12 4235020.31 869 77 0.03468 0.01311 0.01413 0.16946 19Block 290997008001019 727067.73 4236917.90 5 2 0.03379 0.01329 0.01361 0.15079 22BlkGrp 290997006011 727442.52 4240285.11 647 45 0.03330 0.01250 0.01394 0.18903 18Block 171336003001019 732630.91 4239062.17 9 1 0.03211 0.01378 0.01249 0.19496 16Block 290997006012057 727278.47 4241402.03 18 3 0.03204 0.01202 0.01341 0.20020 12Block 171336003001030 731517.59 4239632.06 3 0 0.03139 0.01347 0.01221 0.13580 23

ICF International F-13 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997007002021 729929.60 4235175.08 113 12 0.03096 0.01170 0.01262 0.15121 21Block 171336002001059 737552.35 4243371.85 18 3 0.03072 0.01311 0.01216 0.06283 3Block 290997008001026 727069.87 4235706.28 4 0 0.03039 0.01195 0.01224 0.17894 16Block 290997006012052 728065.97 4242288.57 469 79 0.03036 0.01139 0.01271 0.18737 10Block 171336002001034 731393.01 4240508.01 2 0 0.03032 0.01294 0.01200 0.16788 18Block 290997006012053 727610.40 4242444.35 65 9 0.02957 0.01110 0.01238 0.16602 9Block 171336002001058 737866.05 4243527.52 50 5 0.02946 0.01257 0.01166 0.05966 3

ICF International F-14 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997006012051 727496.28 4242739.01 40 5 0.02878 0.01080 0.01205 0.14616 8Block 290997008001023 726770.39 4235878.63 14 2 0.02816 0.01107 0.01134 0.16873 15Block 171336002001044 736092.50 4243307.84 310 34 0.02789 0.01190 0.01104 0.06465 4Block 290997006012062 726979.17 4241716.73 9 2 0.02768 0.01039 0.01159 0.16055 10Block 171336003001018 732645.21 4240142.05 12 0 0.02743 0.01177 0.01067 0.18413 13Block 171336002001049 737526.20 4243990.12 25 0 0.02693 0.01149 0.01066 0.05363 3Block 171336002001068 737267.02 4244091.56 7 0 0.02678 0.01143 0.01060 0.05378 3

ICF International F-15 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336003001005 736121.22 4241808.07 1 0 0.02669 0.01146 0.01038 0.07529 5Block 290997006012059 726996.34 4242096.88 3 0 0.02667 0.01001 0.01116 0.14888 9Block 290997006015008 727594.62 4238850.21 2 0 0.02666 0.01000 0.01116 0.07534 32Block 290997008001030 726519.70 4235844.35 83 14 0.02661 0.01046 0.01071 0.15980 14BlkGrp 290997006031 726323.72 4246358.98 6203 737 0.02659 0.01018 0.01054 0.07588 4Block 290997006012033 727983.35 4244904.53 2 0 0.02658 0.00997 0.01113 0.09601 5Block 290997006012025 729132.19 4243047.79 7 0 0.02619 0.00983 0.01096 0.15366 9

ICF International F-16 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997006012049 728045.19 4243137.18 17 3 0.02608 0.00979 0.01092 0.13977 8Block 171336002001056 737535.07 4243715.70 19 3 0.02578 0.01100 0.01021 0.05408 3Block 290997008001025 727049.76 4235855.16 11 0 0.02546 0.01001 0.01025 0.14515 17Block 171336003001003 737807.96 4240201.39 84 11 0.02535 0.01088 0.00986 0.06548 4Block 290997006012050 727262.39 4242454.74 9 0 0.02518 0.00945 0.01054 0.13719 9Block 171336002001050 738021.90 4244044.10 57 9 0.02486 0.01061 0.00984 0.05027 3Block 290997008001036 726677.76 4234806.73 35 10 0.02462 0.00968 0.00991 0.14659 11

ICF International F-17 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997008001035 726978.18 4234630.36 96 8 0.02450 0.00963 0.00986 0.14867 11Block 290997008001031 726645.79 4235664.11 49 8 0.02444 0.00961 0.00984 0.14362 14Block 290997006012027 728340.53 4244960.07 1 0 0.02425 0.00910 0.01015 0.09229 5Block 290997008001034 726458.86 4234830.90 50 3 0.02411 0.00948 0.00971 0.14125 11Block 290997008001032 726629.13 4235605.07 19 3 0.02380 0.00936 0.00958 0.13884 14Block 171336002001066 736981.22 4242795.62 16 1 0.02362 0.01008 0.00935 0.06012 4BlkGrp 290997008005 728415.30 4234222.77 907 104 0.02348 0.00923 0.00945 0.13723 13

ICF International F-18 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997007002025 729869.34 4234829.04 26 1 0.02279 0.00861 0.00929 0.11679 17Block 290997008001029 726473.38 4235421.99 8 3 0.02273 0.00894 0.00915 0.13169 12Block 290997008001037 726665.82 4234664.02 44 8 0.02253 0.00886 0.00907 0.13418 11Block 290997006012040 727235.14 4243621.25 27 0 0.02239 0.00840 0.00937 0.10087 7Block 171336003001002 738906.28 4242577.65 23 0 0.02218 0.00952 0.00863 0.04698 3Block 171336002001057 737540.98 4243514.92 26 3 0.02217 0.00946 0.00878 0.05102 3Block 290997006012048 727358.98 4243376.33 1 0 0.02214 0.00831 0.00927 0.10889 7

ICF International F-19 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997008001018 726148.91 4237144.61 27 0 0.02211 0.00869 0.00890 0.12769 15Block 290997006012043 728139.39 4243773.97 2 0 0.02207 0.00828 0.00924 0.11126 7BlkGrp 290997007004 729132.59 4234341.77 639 49 0.02196 0.00830 0.00895 0.12756 14Block 290997008001017 725800.27 4236056.48 207 22 0.02157 0.00848 0.00868 0.12723 12BlkGrp 290997008002 726547.58 4234282.49 1087 92 0.02076 0.00816 0.00836 0.12246 10Block 171336002001051 737827.95 4244172.70 11 2 0.02074 0.00885 0.00821 0.04471 3BlkGrp 290997008007 727676.79 4233773.46 1383 141 0.02050 0.00806 0.00825 0.12329 10

ICF International F-20 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997006012001 728421.23 4246464.88 88 7 0.02029 0.00761 0.00849 0.06602 4Block 290997006012037 727572.91 4244649.60 13 0 0.02021 0.00758 0.00846 0.08063 5BlkGrp 290997008006 728583.13 4233684.14 658 58 0.01989 0.00782 0.00801 0.11747 11Block 290997006012021 727622.36 4245152.84 110 6 0.01973 0.00740 0.00826 0.07348 5Block 290997006012026 728835.98 4245020.55 2 0 0.01967 0.00738 0.00823 0.08182 5Block 290997006012044 727441.70 4243857.29 10 3 0.01920 0.00720 0.00804 0.09113 6Block 290997008001033 726064.73 4235169.25 53 0 0.01914 0.00753 0.00771 0.10874 10

ICF International F-21 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997006012020 727399.40 4245499.97 7 0 0.01903 0.00714 0.00797 0.06701 4BlkGrp 290997007001 729614.26 4233554.91 688 70 0.01877 0.00709 0.00765 0.11621 11Block 290997006012030 728293.96 4244469.02 6 3 0.01865 0.00700 0.00781 0.08781 6Block 290997006012041 727449.38 4244460.32 12 2 0.01812 0.00680 0.00758 0.07782 5Block 290997006012002 727972.60 4246917.69 18 0 0.01788 0.00671 0.00748 0.05615 3Block 290997006012031 727938.98 4244559.96 11 1 0.01786 0.00670 0.00748 0.08092 6Block 171336002001041 738509.37 4245076.42 41 8 0.01766 0.00754 0.00699 0.03677 2

ICF International F-22 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

BlkGrp 290997009002 728311.66 4233068.92 783 86 0.01720 0.00713 0.00638 0.09843 9BlkGrp 290997006051 723624.91 4242046.21 715 62 0.01682 0.00664 0.00637 0.05761 5Block 290997006012019 727579.22 4245892.79 13 3 0.01674 0.00628 0.00701 0.05947 4BlkGrp 290997009001 727560.50 4233013.02 1338 120 0.01670 0.00693 0.00619 0.09472 8Block 171336002001107 735680.14 4242223.36 3 0 0.01669 0.00712 0.00661 0.05544 5Block 290997008001042 725103.83 4236817.60 18 3 0.01637 0.00644 0.00659 0.09378 10Block 290997008001003 725140.09 4237088.20 13 1 0.01631 0.00641 0.00657 0.09750 10

ICF International F-23 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997008001014 725116.05 4236750.29 2 0 0.01630 0.00641 0.00656 0.09279 10Block 290997006012013 727516.48 4246481.73 52 5 0.01613 0.00605 0.00675 0.05335 4Block 171336002001033 731924.18 4243353.68 2 0 0.01607 0.00686 0.00636 0.09918 7Block 171336002001060 737221.98 4243458.08 12 2 0.01605 0.00685 0.00635 0.04320 3BlkGrp 290997006054 725924.10 4239158.81 653 63 0.01595 0.00629 0.00604 0.09315 13Block 171336003001042 733093.44 4235053.49 5 0 0.01574 0.00676 0.00612 0.10167 10Block 290997008001012 724888.21 4236496.57 3 0 0.01557 0.00612 0.00627 0.08680 9

ICF International F-24 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997006012011 727847.92 4246714.24 7 0 0.01554 0.00583 0.00650 0.05149 4BlkGrp 290997008003 726064.69 4233841.60 1014 72 0.01547 0.00608 0.00623 0.08743 8Block 171336003001017 733925.93 4240803.07 13 2 0.01545 0.00663 0.00601 0.09418 8Block 290997006012018 727609.44 4246315.72 37 1 0.01516 0.00569 0.00635 0.05225 4Block 290997006012022 728922.03 4245492.53 31 3 0.01510 0.00567 0.00632 0.06484 5Block 290997008001005 724770.39 4237068.84 4 0 0.01508 0.00593 0.00607 0.08827 9Block 290997006012014 727539.10 4246920.60 38 4 0.01494 0.00561 0.00625 0.04799 3

ICF International F-25 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997006012012 727772.31 4246744.42 2 0 0.01475 0.00554 0.00617 0.04898 4Block 290997006012016 727715.57 4246528.74 36 8 0.01473 0.00553 0.00617 0.05003 4Block 290997006012006 727655.81 4247068.29 20 2 0.01472 0.00552 0.00616 0.04711 3Block 290997006012005 727758.77 4247026.77 14 2 0.01472 0.00552 0.00616 0.04757 3Block 290997006012015 727633.80 4246861.68 21 0 0.01466 0.00550 0.00614 0.04779 3BlkGrp 290997001044 729902.81 4248977.71 1758 164 0.01431 0.00593 0.00579 0.04494 2Block 290997006012004 727988.01 4247103.93 7 1 0.01417 0.00532 0.00593 0.04625 3

ICF International F-26 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336002001032 732434.00 4243775.28 6 0 0.01394 0.00595 0.00552 0.08094 6Block 290997006012007 727629.68 4247514.88 1 0 0.01392 0.00522 0.00583 0.04349 3Block 171336003001041 734065.76 4234674.59 2 0 0.01383 0.00594 0.00538 0.08788 7Block 290997006012010 728232.00 4247333.98 5 0 0.01365 0.00512 0.00571 0.04443 3Block 290997008001006 724360.62 4237030.20 10 5 0.01360 0.00535 0.00548 0.07711 8Block 290997006012003 728123.39 4247209.74 130 12 0.01353 0.00508 0.00566 0.04440 3Block 290997008001010 724327.70 4236523.43 2 0 0.01301 0.00512 0.00524 0.07053 8

ICF International F-27 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

BlkGrp 290997009003 725875.12 4231328.49 2380 254 0.01279 0.00530 0.00474 0.04729 5BlkGrp 290997007005 728878.10 4232113.24 1086 74 0.01191 0.00450 0.00485 0.06374 7Block 171336002001108 735966.95 4242212.54 4 0 0.01176 0.00502 0.00466 0.04172 4BlkGrp 290997010001 721139.29 4233404.33 1558 145 0.01156 0.00558 0.00449 0.03319 3Block 171336002001009 732976.35 4252069.34 4 0 0.01156 0.00493 0.00458 0.03170 2Block 171336002001026 739822.35 4249773.88 2 0 0.01111 0.00474 0.00440 0.02312 1Block 171336002001030 732927.82 4245135.58 20 3 0.01100 0.00469 0.00435 0.05512 4

ICF International F-28 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336003001052 738918.72 4232880.44 11 0 0.01091 0.00468 0.00424 0.03608 3BlkGrp 290997006053 724430.01 4237803.71 1585 139 0.01088 0.00429 0.00412 0.05302 9Block 171336003001015 734134.66 4241977.47 3 1 0.01058 0.00454 0.00411 0.05303 6Block 171336002001037 732299.98 4246468.60 9 0 0.01052 0.00449 0.00416 0.04504 4Block 171336003001038 736866.71 4233738.13 12 0 0.01046 0.00449 0.00407 0.04446 4Block 171336002001012 736254.93 4251368.09 3 0 0.01028 0.00439 0.00407 0.02823 1Block 171336002001038 732505.82 4248322.47 7 0 0.00998 0.00426 0.00395 0.03564 3

ICF International F-29 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336002001011 735260.35 4251890.35 3 0 0.00994 0.00424 0.00393 0.02735 1Block 171336002001004 737525.30 4252254.74 8 0 0.00990 0.00422 0.00392 0.02507 1Block 171336003001043 733446.25 4233838.78 2 0 0.00988 0.00424 0.00384 0.06199 7Block 171336003001000 740536.58 4241786.83 73 11 0.00975 0.00418 0.00379 0.02808 2Block 171336002001003 738581.35 4251459.89 6 1 0.00957 0.00408 0.00379 0.02280 1Block 171336002001007 736217.44 4253648.24 2 0 0.00953 0.00407 0.00377 0.02433 1Block 171336002001029 734596.43 4245667.61 19 4 0.00943 0.00402 0.00373 0.03802 3

ICF International F-30 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336003001063 740323.26 4238788.24 8 1 0.00925 0.00397 0.00360 0.02775 3Block 171336003001054 739740.77 4231971.62 7 0 0.00923 0.00396 0.00359 0.02878 2Block 171336003001009 735197.90 4241730.65 9 1 0.00923 0.00396 0.00359 0.04160 5Block 171336003001012 734729.52 4241772.57 8 0 0.00920 0.00395 0.00358 0.04312 6Block 171336003001006 735393.76 4241891.86 3 0 0.00912 0.00391 0.00355 0.03883 5Block 171336003001055 740588.40 4231227.23 4 2 0.00905 0.00388 0.00352 0.02657 2Block 171336002001015 733988.46 4249102.54 11 4 0.00901 0.00385 0.00357 0.03057 2

ICF International F-31 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336003001066 740381.33 4239647.35 9 1 0.00900 0.00386 0.00350 0.02660 2Block 171336003001026 736235.65 4239744.29 5 0 0.00895 0.00384 0.00348 0.03773 5Block 171336003001010 735066.36 4241875.26 2 0 0.00887 0.00381 0.00345 0.03958 5Block 171336002001014 735142.94 4249403.74 6 0 0.00887 0.00379 0.00351 0.02967 2Block 171336003001008 735260.73 4241950.60 2 0 0.00875 0.00376 0.00340 0.03781 5Block 171336002001018 736016.75 4248018.53 7 0 0.00874 0.00373 0.00346 0.02871 2Block 171336002001091 734948.92 4241972.83 2 0 0.00871 0.00372 0.00345 0.03867 6

ICF International F-32 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336003001065 740900.87 4239016.49 10 4 0.00867 0.00372 0.00337 0.02552 2Block 171336002001106 735067.40 4241976.28 2 0 0.00866 0.00370 0.00343 0.03804 5Block 171336002001103 735405.02 4242188.07 2 0 0.00864 0.00369 0.00342 0.03540 5Block 171336003001007 735322.76 4242061.47 7 0 0.00859 0.00369 0.00334 0.03630 5Block 171336002001105 735186.97 4242024.19 6 0 0.00858 0.00366 0.00340 0.03702 5Block 171336002001073 735024.05 4243274.65 2 0 0.00856 0.00365 0.00339 0.03613 5BlkGrp 290997006052 722072.13 4239260.36 1569 187 0.00853 0.00337 0.00323 0.02920 5

ICF International F-33 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336002001104 735242.93 4242124.78 8 1 0.00847 0.00361 0.00335 0.03576 5Block 171336002001101 735065.65 4242173.14 6 1 0.00845 0.00361 0.00334 0.03618 5Block 171336002001093 735279.67 4242393.45 6 0 0.00829 0.00354 0.00328 0.03398 5Block 171336002001019 736622.49 4249083.49 2 0 0.00814 0.00347 0.00322 0.02534 2Block 171336003001051 738200.79 4232475.57 1 0 0.00813 0.00349 0.00316 0.02756 3Block 171336003001044 734283.87 4233329.79 7 0 0.00803 0.00345 0.00312 0.04476 6Block 171336002001076 734539.48 4243602.90 4 0 0.00800 0.00341 0.00317 0.03742 5

ICF International F-34 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb air 

concentration 

(μg/m3)

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled 

Dry 

Deposition 

(g/m2/yr)

Estima

Conce

(m

[From ISCPrime 

Modeling]

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

Back

[Centroid Coordinates in 

NAD83]

[From 2000 

Census]

Exhibit F-2. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336002001022 737420.01 4248814.08 25 1 0.00754 0.00322 0.00298 0.02241 2Block 171336002001070 735389.94 4244507.20 7 0 0.00742 0.00317 0.00294 0.02931 4Block 171336002001028 737198.82 4246114.30 19 0 0.00735 0.00314 0.00291 0.02379 2Block 171336002001023 738625.88 4249231.42 54 4 0.00642 0.00274 0.00254 0.01839 2Block 171336003001058 739334.27 4229409.76 6 0 0.00556 0.00239 0.00216 0.01625 2Block 171336003001045 735284.84 4231890.54 2 0 0.00541 0.00232 0.00210 0.02255 4

ICF International F-35 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

Block 290997006014042 729362.90 4238252.91 9 1 1.500000 0.56289 0.62785 4.65080 12

Block 290997006014039 729250.25 4237789.26 65 5 1.500000 0.56289 0.62785 5.19613 29

Block 290997006014052 729155.30 4237234.24 41 1 1.195566 0.44864 0.50043 1.25085 21Block 290997006014032 729366.83 4238338.85 24 1 1.500000 0.56289 0.62785 3.82524 16

Block 290997006014048 729235.27 4237980.69 1 0 1.483735 0.55678 0.62105 4.05533 19

Block 290997006014033 729422.44 4238455.54 34 1 1.493954 0.56062 0.62532 3.22791 16

Block 290997006014051 729133.50 4237807.16 44 6 1.209662 0.45393 0.50633 2.82993 18

Block 290997006014046 729247.56 4238193.09 50 5 1.278124 0.47963 0.53498 2.92586 12

BlkGrp 290997006013 728097.71 4240224.82 1350 176 0.04427 0.01661 0.01853 0.20897 23

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

ICF International F-36 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

BlkGrp 290997008004 727854.54 4235378.22 2080 197 0.03673 0.01444 0.01479 0.18222 18

BlkGrp 290997007003 729089.12 4235020.31 869 77 0.03468 0.01311 0.01413 0.16946 19

BlkGrp 290997006011 727442.52 4240285.11 647 45 0.03330 0.01250 0.01394 0.18903 18BlkGrp 290997006031 726323.72 4246358.98 6203 737 0.02659 0.01018 0.01054 0.07588 40

BlkGrp 290997008005 728415.30 4234222.77 907 104 0.02348 0.00923 0.00945 0.13723 13

BlkGrp 290997007004 729132.59 4234341.77 639 49 0.02196 0.00830 0.00895 0.12756 14

ICF International F-37 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

BlkGrp 290997008002 726547.58 4234282.49 1087 92 0.02076 0.00816 0.00836 0.12246 10

BlkGrp 290997008007 727676.79 4233773.46 1383 141 0.02050 0.00806 0.00825 0.12329 10

BlkGrp 290997008006 728583.13 4233684.14 658 58 0.01989 0.00782 0.00801 0.11747 11BlkGrp 290997007001 729614.26 4233554.91 688 70 0.01877 0.00709 0.00765 0.11621 11BlkGrp 290997009002 728311.66 4233068.92 783 86 0.01720 0.00713 0.00638 0.09843 91BlkGrp 290997006051 723624.91 4242046.21 715 62 0.01682 0.00664 0.00637 0.05761 55

ICF International F-38 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

BlkGrp 290997009001 727560.50 4233013.02 1338 120 0.01670 0.00693 0.00619 0.09472 84

BlkGrp 290997006054 725924.10 4239158.81 653 63 0.01595 0.00629 0.00604 0.09315 13

BlkGrp 290997008003 726064.69 4233841.60 1014 72 0.01547 0.00608 0.00623 0.08743 83

BlkGrp 290997001044 729902.81 4248977.71 1758 164 0.01431 0.00593 0.00579 0.04494 29

BlkGrp 290997009003 725875.12 4231328.49 2380 254 0.01279 0.00530 0.00474 0.04729 50

BlkGrp 290997007005 728878.10 4232113.24 1086 74 0.01191 0.00450 0.00485 0.06374 73

ICF International F-39 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

BlkGrp 290997010001 721139.29 4233404.33 1558 145 0.01156 0.00558 0.00449 0.03319 36

BlkGrp 290997006053 724430.01 4237803.71 1585 139 0.01088 0.00429 0.00412 0.05302 90

BlkGrp 290997006052 722072.13 4239260.36 1569 187 0.00853 0.00337 0.00323 0.02920 51

Block 290997006014027 729515.21 4238636.90 102 14 0.86550 0.32479 0.36227 1.87320 22Block 290997006014043 729196.78 4238271.42 29 2 0.83214 0.31227 0.34831 1.98609 14

Block 290997006014049 729111.36 4238054.93 33 1 0.75855 0.28465 0.31751 1.86272 16Block 290997006014028 729428.81 4238679.89 21 2 0.67228 0.25228 0.28140 1.49391 17

Block 290997006014029 729392.81 4238714.21 6 1 0.56946 0.21369 0.23836 1.27541 13Block 290997006014050 729071.48 4238169.93 4 1 0.52522 0.19709 0.21984 1.27528 17

ICF International F-40 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997006014045 729077.95 4238222.62 6 0 0.49061 0.18410 0.20535 1.20626 17

Block 290997006014044 729050.34 4238325.84 64 6 0.37145 0.13939 0.15548 0.89760 15

Block 290997006014031 729264.54 4238886.27 14 0 0.31235 0.11721 0.13074 0.63665 13Block 290997006015016 729023.43 4238545.21 65 8 0.27218 0.10214 0.11393 0.60448 10Block 290997006014025 729379.76 4239033.93 168 13 0.26914 0.10100 0.11265 0.53910 11

Block 290997006015017 728986.31 4238647.15 68 6 0.22852 0.08575 0.09565 0.47404 15Block 290997006015015 729148.25 4238972.84 21 2 0.22613 0.08486 0.09465 0.43252 97

Block 290997007002006 729059.80 4236838.74 36 1 0.20643 0.07802 0.08414 0.52405 70

Block 290997006014021 729457.48 4239296.65 79 2 0.16434 0.06167 0.06879 0.34521 94

ICF International F-41 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997006015012 728858.19 4238842.45 173 5 0.14254 0.05349 0.05966 0.27291 63Block 290997006015018 728797.34 4238601.41 29 2 0.14210 0.05332 0.05948 0.26696 16

Block 290997007002007 728553.89 4237806.92 9 0 0.13955 0.05274 0.05688 0.30351 97

Block 290997006015001 728967.45 4239229.25 104 11 0.13606 0.05106 0.05695 0.24255 41Block 290997006015013 728814.37 4239124.95 7 1 0.12861 0.04826 0.05383 0.22434 52

Block 290997006015011 728758.89 4238694.23 15 1 0.11967 0.04491 0.05009 0.22659 12

Block 290997007002009 728590.84 4238331.02 5 1 0.10478 0.03960 0.04271 0.21515 95

Block 290997006015019 728660.34 4238434.97 53 5 0.09604 0.03604 0.04020 0.20131 17

ICF International F-42 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997007002011 728237.58 4237307.25 6 3 0.08899 0.03363 0.03627 0.19556 55

Block 290997007002008 728334.88 4238091.55 4 0 0.08653 0.03270 0.03527 0.18440 73

Block 290997007002012 728584.39 4236783.90 24 3 0.08548 0.03231 0.03484 0.18560 51

Block 290997006014018 729092.12 4239745.74 54 3 0.08244 0.03094 0.03451 0.19380 39

Block 290997006014020 728668.17 4239509.57 12 0 0.08166 0.03064 0.03418 0.20622 42

Block 290997006014019 728586.89 4239850.59 5 0 0.06262 0.02350 0.02621 0.19987 32

ICF International F-43 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997006014015 728739.72 4240188.13 120 15 0.05931 0.02226 0.02483 0.22838 27

Block 290997008001049 728121.83 4237967.39 26 4 0.05749 0.02261 0.02315 0.10466 58

Block 290997008001048 728023.45 4237701.08 40 0 0.05472 0.02152 0.02203 0.10775 51

Block 290997008001047 727929.43 4237420.75 29 2 0.05199 0.02044 0.02093 0.11297 44

Block 290997007002016 728967.40 4236079.82 257 29 0.05192 0.01962 0.02116 0.17830 35

Block 290997006015010 728267.10 4238772.22 1 0 0.05069 0.01902 0.02122 0.10524 53

ICF International F-44 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997007002017 729459.02 4235873.61 40 1 0.04686 0.01771 0.01910 0.17274 32

Block 290997006014006 728248.57 4241289.02 4 1 0.04638 0.01740 0.01941 0.28438 15

Block 290997006014007 728721.50 4240803.57 4 1 0.04470 0.01677 0.01871 0.24092 20

Block 290997008001046 727815.41 4237624.53 11 0 0.04431 0.01742 0.01784 0.10202 42

Block 290997007002020 729595.07 4235653.30 34 0 0.04131 0.01561 0.01684 0.18247 27

Block 290997006012065 728085.71 4241532.82 9 2 0.04125 0.01548 0.01727 0.25331 13

ICF International F-45 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997006015002 727830.79 4239565.70 469 95 0.04043 0.01517 0.01692 0.18086 28

Block 171336003001032 733177.72 4236966.44 11 0 0.04020 0.01725 0.01563 0.26413 13

Block 290997007002029 728299.71 4235527.81 253 46 0.03953 0.01494 0.01611 0.20949 22

Block 290997008001000 727894.73 4238256.85 20 3 0.03885 0.01528 0.01564 0.07871 46

Block 290997008001045 727651.84 4237637.10 30 4 0.03866 0.01520 0.01557 0.10264 37

Block 290997007002033 728508.56 4235633.67 89 23 0.03823 0.01445 0.01558 0.17519 24

ICF International F-46 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997006012064 727831.06 4241476.15 5 0 0.03807 0.01429 0.01593 0.23609 13

Block 290997008001044 727656.50 4237556.45 31 3 0.03770 0.01482 0.01518 0.09817 37

Block 290997007002030 728370.71 4235325.85 64 7 0.03702 0.01399 0.01509 0.20545 20

Block 290997007002032 728448.85 4235633.00 35 13 0.03689 0.01394 0.01504 0.16207 24

Block 290997007002014 728207.59 4236027.06 32 2 0.03663 0.01384 0.01493 0.12847 27

Block 290997007002031 728365.30 4235630.64 9 4 0.03653 0.01381 0.01489 0.16131 23

ICF International F-47 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997007002028 728275.96 4235183.83 42 6 0.03556 0.01344 0.01449 0.20387 18

Block 290997008001019 727067.73 4236917.90 5 2 0.03379 0.01329 0.01361 0.15079 22

Block 171336003001019 732630.91 4239062.17 9 1 0.03211 0.01378 0.01249 0.19496 16

Block 290997006012057 727278.47 4241402.03 18 3 0.03204 0.01202 0.01341 0.20020 12

Block 171336003001030 731517.59 4239632.06 3 0 0.03139 0.01347 0.01221 0.13580 23

Block 290997007002021 729929.60 4235175.08 113 12 0.03096 0.01170 0.01262 0.15121 21

ICF International F-48 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336002001059 737552.35 4243371.85 18 3 0.03072 0.01311 0.01216 0.06283 35

Block 290997008001026 727069.87 4235706.28 4 0 0.03039 0.01195 0.01224 0.17894 16

Block 290997006012052 728065.97 4242288.57 469 79 0.03036 0.01139 0.01271 0.18737 10

Block 171336002001034 731393.01 4240508.01 2 0 0.03032 0.01294 0.01200 0.16788 18

Block 290997006012053 727610.40 4242444.35 65 9 0.02957 0.01110 0.01238 0.16602 96

Block 171336002001058 737866.05 4243527.52 50 5 0.02946 0.01257 0.01166 0.05966 34

ICF International F-49 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997006012051 727496.28 4242739.01 40 5 0.02878 0.01080 0.01205 0.14616 88

Block 290997008001023 726770.39 4235878.63 14 2 0.02816 0.01107 0.01134 0.16873 15

Block 171336002001044 736092.50 4243307.84 310 34 0.02789 0.01190 0.01104 0.06465 43

Block 290997006012062 726979.17 4241716.73 9 2 0.02768 0.01039 0.01159 0.16055 10

Block 171336003001018 732645.21 4240142.05 12 0 0.02743 0.01177 0.01067 0.18413 13

Block 171336002001049 737526.20 4243990.12 25 0 0.02693 0.01149 0.01066 0.05363 34

ICF International F-50 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336002001068 737267.02 4244091.56 7 0 0.02678 0.01143 0.01060 0.05378 34

Block 171336003001005 736121.22 4241808.07 1 0 0.02669 0.01146 0.01038 0.07529 50

Block 290997006012059 726996.34 4242096.88 3 0 0.02667 0.01001 0.01116 0.14888 97

Block 290997006015008 727594.62 4238850.21 2 0 0.02666 0.01000 0.01116 0.07534 32

Block 290997008001030 726519.70 4235844.35 83 14 0.02661 0.01046 0.01071 0.15980 14

Block 290997006012033 727983.35 4244904.53 2 0 0.02658 0.00997 0.01113 0.09601 56

ICF International F-51 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997006012025 729132.19 4243047.79 7 0 0.02619 0.00983 0.01096 0.15366 90

Block 290997006012049 728045.19 4243137.18 17 3 0.02608 0.00979 0.01092 0.13977 83

Block 171336002001056 737535.07 4243715.70 19 3 0.02578 0.01100 0.01021 0.05408 34

Block 290997008001025 727049.76 4235855.16 11 0 0.02546 0.01001 0.01025 0.14515 17

Block 171336003001003 737807.96 4240201.39 84 11 0.02535 0.01088 0.00986 0.06548 42

Block 290997006012050 727262.39 4242454.74 9 0 0.02518 0.00945 0.01054 0.13719 92

ICF International F-52 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336002001050 738021.90 4244044.10 57 9 0.02486 0.01061 0.00984 0.05027 32

Block 290997008001036 726677.76 4234806.73 35 10 0.02462 0.00968 0.00991 0.14659 11

Block 290997008001035 726978.18 4234630.36 96 8 0.02450 0.00963 0.00986 0.14867 11

Block 290997008001031 726645.79 4235664.11 49 8 0.02444 0.00961 0.00984 0.14362 14

Block 290997006012027 728340.53 4244960.07 1 0 0.02425 0.00910 0.01015 0.09229 56

Block 290997008001034 726458.86 4234830.90 50 3 0.02411 0.00948 0.00971 0.14125 11

ICF International F-53 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997008001032 726629.13 4235605.07 19 3 0.02380 0.00936 0.00958 0.13884 14

Block 171336002001066 736981.22 4242795.62 16 1 0.02362 0.01008 0.00935 0.06012 40

Block 290997007002025 729869.34 4234829.04 26 1 0.02279 0.00861 0.00929 0.11679 17

Block 290997008001029 726473.38 4235421.99 8 3 0.02273 0.00894 0.00915 0.13169 12

Block 290997008001037 726665.82 4234664.02 44 8 0.02253 0.00886 0.00907 0.13418 11

Block 290997006012040 727235.14 4243621.25 27 0 0.02239 0.00840 0.00937 0.10087 70

ICF International F-54 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336003001002 738906.28 4242577.65 23 0 0.02218 0.00952 0.00863 0.04698 32

Block 171336002001057 737540.98 4243514.92 26 3 0.02217 0.00946 0.00878 0.05102 35

Block 290997006012048 727358.98 4243376.33 1 0 0.02214 0.00831 0.00927 0.10889 74

Block 290997008001018 726148.91 4237144.61 27 0 0.02211 0.00869 0.00890 0.12769 15

Block 290997006012043 728139.39 4243773.97 2 0 0.02207 0.00828 0.00924 0.11126 72

Block 290997008001017 725800.27 4236056.48 207 22 0.02157 0.00848 0.00868 0.12723 12

ICF International F-55 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336002001051 737827.95 4244172.70 11 2 0.02074 0.00885 0.00821 0.04471 32

Block 290997006012001 728421.23 4246464.88 88 7 0.02029 0.00761 0.00849 0.06602 42

Block 290997006012037 727572.91 4244649.60 13 0 0.02021 0.00758 0.00846 0.08063 57

Block 290997006012021 727622.36 4245152.84 110 6 0.01973 0.00740 0.00826 0.07348 52

Block 290997006012026 728835.98 4245020.55 2 0 0.01967 0.00738 0.00823 0.08182 56

Block 290997006012044 727441.70 4243857.29 10 3 0.01920 0.00720 0.00804 0.09113 67

ICF International F-56 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997008001033 726064.73 4235169.25 53 0 0.01914 0.00753 0.00771 0.10874 10

Block 290997006012020 727399.40 4245499.97 7 0 0.01903 0.00714 0.00797 0.06701 48

Block 290997006012030 728293.96 4244469.02 6 3 0.01865 0.00700 0.00781 0.08781 62

Block 290997006012041 727449.38 4244460.32 12 2 0.01812 0.00680 0.00758 0.07782 59

Block 290997006012002 727972.60 4246917.69 18 0 0.01788 0.00671 0.00748 0.05615 39

Block 290997006012031 727938.98 4244559.96 11 1 0.01786 0.00670 0.00748 0.08092 60

ICF International F-57 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336002001041 738509.37 4245076.42 41 8 0.01766 0.00754 0.00699 0.03677 28

Block 290997006012019 727579.22 4245892.79 13 3 0.01674 0.00628 0.00701 0.05947 45

Block 171336002001107 735680.14 4242223.36 3 0 0.01669 0.00712 0.00661 0.05544 51

Block 290997008001042 725103.83 4236817.60 18 3 0.01637 0.00644 0.00659 0.09378 10

Block 290997008001003 725140.09 4237088.20 13 1 0.01631 0.00641 0.00657 0.09750 10

Block 290997008001014 725116.05 4236750.29 2 0 0.01630 0.00641 0.00656 0.09279 10

ICF International F-58 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997006012013 727516.48 4246481.73 52 5 0.01613 0.00605 0.00675 0.05335 41

Block 171336002001033 731924.18 4243353.68 2 0 0.01607 0.00686 0.00636 0.09918 73

Block 171336002001060 737221.98 4243458.08 12 2 0.01605 0.00685 0.00635 0.04320 37

Block 171336003001042 733093.44 4235053.49 5 0 0.01574 0.00676 0.00612 0.10167 10

Block 290997008001012 724888.21 4236496.57 3 0 0.01557 0.00612 0.00627 0.08680 96

Block 290997006012011 727847.92 4246714.24 7 0 0.01554 0.00583 0.00650 0.05149 40

ICF International F-59 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336003001017 733925.93 4240803.07 13 2 0.01545 0.00663 0.00601 0.09418 86

Block 290997006012018 727609.44 4246315.72 37 1 0.01516 0.00569 0.00635 0.05225 42

Block 290997006012022 728922.03 4245492.53 31 3 0.01510 0.00567 0.00632 0.06484 51

Block 290997008001005 724770.39 4237068.84 4 0 0.01508 0.00593 0.00607 0.08827 97

Block 290997006012014 727539.10 4246920.60 38 4 0.01494 0.00561 0.00625 0.04799 38

Block 290997006012012 727772.31 4246744.42 2 0 0.01475 0.00554 0.00617 0.04898 40

ICF International F-60 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997006012016 727715.57 4246528.74 36 8 0.01473 0.00553 0.00617 0.05003 41

Block 290997006012006 727655.81 4247068.29 20 2 0.01472 0.00552 0.00616 0.04711 38

Block 290997006012005 727758.77 4247026.77 14 2 0.01472 0.00552 0.00616 0.04757 38

Block 290997006012015 727633.80 4246861.68 21 0 0.01466 0.00550 0.00614 0.04779 39

Block 290997006012004 727988.01 4247103.93 7 1 0.01417 0.00532 0.00593 0.04625 38

Block 171336002001032 732434.00 4243775.28 6 0 0.01394 0.00595 0.00552 0.08094 63

ICF International F-61 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 290997006012007 727629.68 4247514.88 1 0 0.01392 0.00522 0.00583 0.04349 35

Block 171336003001041 734065.76 4234674.59 2 0 0.01383 0.00594 0.00538 0.08788 78

Block 290997006012010 728232.00 4247333.98 5 0 0.01365 0.00512 0.00571 0.04443 37

Block 290997008001006 724360.62 4237030.20 10 5 0.01360 0.00535 0.00548 0.07711 86

Block 290997006012003 728123.39 4247209.74 130 12 0.01353 0.00508 0.00566 0.04440 37

Block 290997008001010 724327.70 4236523.43 2 0 0.01301 0.00512 0.00524 0.07053 83

ICF International F-62 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336002001108 735966.95 4242212.54 4 0 0.01176 0.00502 0.00466 0.04172 49

Block 171336002001009 732976.35 4252069.34 4 0 0.01156 0.00493 0.00458 0.03170 20

Block 171336002001026 739822.35 4249773.88 2 0 0.01111 0.00474 0.00440 0.02312 17

Block 171336002001030 732927.82 4245135.58 20 3 0.01100 0.00469 0.00435 0.05512 47

Block 171336003001052 738918.72 4232880.44 11 0 0.01091 0.00468 0.00424 0.03608 31

Block 171336003001015 734134.66 4241977.47 3 1 0.01058 0.00454 0.00411 0.05303 69

ICF International F-63 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336002001037 732299.98 4246468.60 9 0 0.01052 0.00449 0.00416 0.04504 40

Block 171336003001038 736866.71 4233738.13 12 0 0.01046 0.00449 0.00407 0.04446 43

Block 171336002001012 736254.93 4251368.09 3 0 0.01028 0.00439 0.00407 0.02823 19

Block 171336002001038 732505.82 4248322.47 7 0 0.00998 0.00426 0.00395 0.03564 30

Block 171336002001011 735260.35 4251890.35 3 0 0.00994 0.00424 0.00393 0.02735 18

Block 171336002001004 737525.30 4252254.74 8 0 0.00990 0.00422 0.00392 0.02507 16

ICF International F-64 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336003001043 733446.25 4233838.78 2 0 0.00988 0.00424 0.00384 0.06199 76

Block 171336003001000 740536.58 4241786.83 73 11 0.00975 0.00418 0.00379 0.02808 27

Block 171336002001003 738581.35 4251459.89 6 1 0.00957 0.00408 0.00379 0.02280 17

Block 171336002001007 736217.44 4253648.24 2 0 0.00953 0.00407 0.00377 0.02433 15

Block 171336002001029 734596.43 4245667.61 19 4 0.00943 0.00402 0.00373 0.03802 38

Block 171336003001063 740323.26 4238788.24 8 1 0.00925 0.00397 0.00360 0.02775 30

ICF International F-65 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336003001054 739740.77 4231971.62 7 0 0.00923 0.00396 0.00359 0.02878 26

Block 171336003001009 735197.90 4241730.65 9 1 0.00923 0.00396 0.00359 0.04160 59

Block 171336003001012 734729.52 4241772.57 8 0 0.00920 0.00395 0.00358 0.04312 64

Block 171336003001006 735393.76 4241891.86 3 0 0.00912 0.00391 0.00355 0.03883 56

Block 171336003001055 740588.40 4231227.23 4 2 0.00905 0.00388 0.00352 0.02657 23

Block 171336002001015 733988.46 4249102.54 11 4 0.00901 0.00385 0.00357 0.03057 26

ICF International F-66 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336003001066 740381.33 4239647.35 9 1 0.00900 0.00386 0.00350 0.02660 29

Block 171336003001026 736235.65 4239744.29 5 0 0.00895 0.00384 0.00348 0.03773 57

Block 171336003001010 735066.36 4241875.26 2 0 0.00887 0.00381 0.00345 0.03958 59

Block 171336002001014 735142.94 4249403.74 6 0 0.00887 0.00379 0.00351 0.02967 24

Block 171336003001008 735260.73 4241950.60 2 0 0.00875 0.00376 0.00340 0.03781 57

Block 171336002001018 736016.75 4248018.53 7 0 0.00874 0.00373 0.00346 0.02871 26

ICF International F-67 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336002001091 734948.92 4241972.83 2 0 0.00871 0.00372 0.00345 0.03867 60

Block 171336003001065 740900.87 4239016.49 10 4 0.00867 0.00372 0.00337 0.02552 28

Block 171336002001106 735067.40 4241976.28 2 0 0.00866 0.00370 0.00343 0.03804 59

Block 171336002001103 735405.02 4242188.07 2 0 0.00864 0.00369 0.00342 0.03540 54

Block 171336003001007 735322.76 4242061.47 7 0 0.00859 0.00369 0.00334 0.03630 56

Block 171336002001105 735186.97 4242024.19 6 0 0.00858 0.00366 0.00340 0.03702 57

ICF International F-68 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336002001073 735024.05 4243274.65 2 0 0.00856 0.00365 0.00339 0.03613 50

Block 171336002001104 735242.93 4242124.78 8 1 0.00847 0.00361 0.00335 0.03576 56

Block 171336002001101 735065.65 4242173.14 6 1 0.00845 0.00361 0.00334 0.03618 57

Block 171336002001093 735279.67 4242393.45 6 0 0.00829 0.00354 0.00328 0.03398 54

Block 171336002001019 736622.49 4249083.49 2 0 0.00814 0.00347 0.00322 0.02534 22

Block 171336003001051 738200.79 4232475.57 1 0 0.00813 0.00349 0.00316 0.02756 32

ICF International F-69 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336003001044 734283.87 4233329.79 7 0 0.00803 0.00345 0.00312 0.04476 61

Block 171336002001076 734539.48 4243602.90 4 0 0.00800 0.00341 0.00317 0.03742 51

Block 171336002001022 737420.01 4248814.08 25 1 0.00754 0.00322 0.00298 0.02241 22

Block 171336002001070 735389.94 4244507.20 7 0 0.00742 0.00317 0.00294 0.02931 41

Block 171336002001028 737198.82 4246114.30 19 0 0.00735 0.00314 0.00291 0.02379 29

Block 171336002001023 738625.88 4249231.42 54 4 0.00642 0.00274 0.00254 0.01839 20

ICF International F-70 
Spatial 

Level

Block Group or 

Block FIPS UTMx UTMy Pop 2000

Children 

Ages 0 to 

7 Years 

in 2000

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Concentration 

(μg/m3)

Current 

NAAQS: 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration for Population 

(μg/m3)

Current 

NAAQS: 

Children Ages 

0 to 4 Years 

Modeled 

Average 

Annual Pb Air 

Exposure 

Concentration 

(μg/m3)

Modeled Dry 

Deposition 

(g/m2/yr)

Estima

P

Conce

(mg

[From NATA 

Ratios]

[From NATA 

Ratios]

[From ISCPrime 

Modeling]

[Inc

backg

[Centroid coordinates in 

NAD83]

[From 2000 

census]

Exhibit F-3. Primary Pb Smelter: Attainment Scenario Media Concentrations

Block 171336003001058 739334.27 4229409.76 6 0 0.00556 0.00239 0.00216 0.01625 23

Block 171336003001045 735284.84 4231890.54 2 0 0.00541 0.00232 0.00210 0.02255 44

ICF International F-71 
ICF International F-72 D

1 Exhibit F-4. Primary Pb Smelter Air Concentration Modeled Results Compared to Monitor 

Average Monitored Pb concentrations 

Pilot Analysis 2001 2002 2003 2004 

ID or Monitor 

ID 

Distance 

from Main 

Stacka

(km) 

Two Year 

Average 

Modeled 

Air Conc 

(μg/m3) 

Mean 

Conc 

(μg/m3) 

Ratio 

Monitor 

to Model 

Mean 

Conc 

(μg/m3) 

Ratio 

Monitor 

to Model 

Mean 

Conc 

(μg/m3) 

Ratio 

Monitor 

to Model 

Mean 

Conc 

(μg/m3) 

Rati

Monit

to Mod

USEPA Region 7 Database HiVols Valuesb

100 0.39 1.06 1.3 1.2 1.0 0.9 0.79 0.7 101 0.45 4.04 0.52 0.1 1.1 0.3 102 0.53 2.17 6.2 2.8 2.4 1.1 1.0 0.4 103 0.73 0.186 1.0 5.4 0.80 4.3 0.39 2.1 

AirData Monitored Valuesc

290990015 0.29 1.71 3.18 1.9 1.29 0.8 1.31 0.8 1.37 0.8 290990004 0.34 2.46 1.27 0.5 290990005 0.78 0.463 2.11 4.6 0.395 0.9 0.308 0.7 0.436 0.9 290990011 0.89 0.323 1.52 4.7 0.508 1.6 0.414 1.3 0.558 1.7 290990016 0.92 0.151 0.300 2.0 290990013 1.5 0.135 0.904 6.7 0.241 1.8 0.194 1.4 0.437 3.2 290990008 1.5 0.044 0.273 6.2 0.068 1.5 0.102 2.3 0.097 2.2 290990010 2.2 0.043 0.077 1.8 0.069 1.6 0.034 0.8 0.046 1.1 290990009 2.7 0.048 0.332 7.0 0.048 1.0 0.086 1.8 0.105 2.2 

a 2 The facility spans roughly 0.2 by 1 km. Therefore, some monitors will be closer to other emission release points than they are to the mb 3 The Pb air concentration detections (which appear to be TSP Pb) reported in the HiVols dataset of the EPA Region 7 database were av

4 non-detects were assigned half of the detection limit for averaging. Averages for 2001 are from measurements taken between October 5 for 2002 are from measurements taken all year; and averages for 2003 are from measurements taken between January and July. c 6 AirData values are for TSP Pb and are averages obtained from the AirData website monitor reports. In some cases, there is more than 
ICF International F-73 D

1 Exhibit F-5. Primary Pb Smelter Deposition Modeled Results Compared to Measured Va

2003 Measured Deposition 2004 Measured D

Height = 1 Foot Height = 10 Feet Height = 1 Foot 

Pilot 

Analysis ID 

Distance to 

Main Stack 

(km)a

Modeled 

Average Pb 

Deposition 

(g/m2/yr) 

Average Pb 

Deposition 

(g/m2/yr) 

Ratio 

Measured to 

Modeled 

Average Pb 

Deposition 

(g/m2/yr) 

Ratio 

Measured to 

Modeled 

Average Pb 

Deposition 

(g/m2/yr) 

Ratio 

Measured to 

Modeled 

Av

D

(

1071 0.38 2.62 1.38 0.53 1.43 0.55 1.71 0.65 

181 0.49 1.23 0.92 0.75 0.97 0.79 0.97 0.79 286 0.56 2.55 0.77 0.30 0.84 0.33 1.35 0.53 

1073 0.70 0.45 0.68 1.51 0.65 1.44 0.77 1.71 

444 0.71 1.42 0.35 0.25 0.34 0.24 0.49 0.35 240 0.76 0.37 0.30 0.82 0.34 0.91 0.44 1.17 207 0.85 0.65 0.26 0.40 0.30 0.45 0.42 0.65 576 1.0 0.53 0.16 0.31 0.17 0.32 0.34 0.64 531 1.3 0.35 0.13 0.39 0.11 0.31 0.30 0.87 

1072 1.9 0.21 0.05 0.26 0.22 1.04 0.13 0.63 

Average 0.55 0.64 0.80 

a 2 The facility spans roughly 0.2 by 1 km. Therefore, some monitors will be closer to other emission release points than they are to the m
 Appendix F 

 

ICF International F-74 DRAFT – December 2006 

1 F.2 Primary Pb Smelter Measured Pb Concentrations for Use in the Ecological Risk 

2 Assessment 

3 

4 This section provides a summary of Pb concentrations in soil, surface water, and sediment used 

5 to estimate ecological receptor exposure and risk for the primary Pb smelter case study location. 

6 Exhibit F-6 presents measured soil concentrations near the facility that were used in the 

7 ecological risk assessment. Exhibits F-7, F-8, and F-9 present measured Pb concentrations in 

8 surface water bodies near the facility used for the ecological risk assessment. Exhibits F-10, F9 11, and F-12 present measured Pb concentrations in sediment near the facility used for the 

10 ecological risk assessment. Further discussion of media concentrations used for the ecological 

11 risk assessment is provided in Chapter 4, Section 4.1.5. 

12 
 Appendix F 

 

ICF International F-75 DRAFT – December 2006 

1 Exhibit F-6. Soil Sample Clusters Used to Estimate Ecological Receptor Exposure via Soil 

2 and Corresponding Pb Analysis Results (ELM 2005) 

Sample IDa Measured Pb conc. (mg Pb/kg Soil) Detection Limit (mg/kg) 

Sample Cluster 1: Soil Samples from West of Joachim Creek 

JWSL1 (040) 448 0.30 

JWSL2 (080) 472 0.31 

JWSL3 (120) 449 0.30 

JWSL4 (160) 484 0.31 

JWSL5 (200) 476 0.31 

JWSL6 (240) 393 0.39 

JWSL7 (280) 376 0.38 

JWSL8 (320) 363 0.38 

JWSL9 (360) 412 0.42 

JWSL10 (400) 381 0.40 

Mean 425 0.35 

Standard deviation 45.7 

Sample Cluster 2: Soil Samples from Crystal City Locations (South of Facility) 

CCSL1 (01) 74.5 0.52 

CCSL2 (02) 58.6 0.40 

CCSL3 (03) 52.3 0.39 

CCSL4 (04) 72.1 0.39 

CCSL5 (05) 56.5 0.40 

CCSL6 (06) 74.3 0.39 

Mean 64.7 0.41 

Standard deviation 10.0 

Sample Cluster 3: Soil Samples from 'Near Festers Airport' Locations (South of Facility) 

RTSL1 (001) 68.1 0.48 

RTSL2 (002) 56 0.37 

RTSL3 (007) 77.1 0.38 

RTSL4 (008) 39.8 0.43 

RTSL5 (009) 36.6 0.41 

RTSL6 (010) 37.6 0.42 

RTSL7 (011) 49.5 0.29 

RTSL8 (012) 45.7 0.37 

RTSL9 (05) 40.5 0.36 

RTSL10 (06) 34.3 0.35 

Mean 48.5 0.39 

Standard deviation 14.4 a 3 Sampling location numerical designations used in ELM (2005) Figure 6 are provided in parentheses. 

4 
 Appendix F 

 

ICF International F-76 DRAFT – December 2006 

1 Exhibit F-7. Joachim Creek Measured Surface Water Dissolved Pb Concentration Data 

2 for Primary Pb Smelter Case Study (ELM 2005) 

Joachim Creek 

Sample ID No. 

Dissolved Pb 

Concentration for Surface 

Water (μg/L)a

Hardness 

(mg/L of CaCO3) 

Cluster 1 

JC01-01 Not detected 290 

JC01-02 Not detected 280 

JC01-03 Not detected 280 

Cluster 2 

JC02-01 Not detected 270 

JC02-02 Not detected 280 

JC02-03 Not detected 280 

Cluster 3 

JC03-01 Not detected 310 

JC03-02 Not detected 270 

JC03-03 Not detected 270 

JC04-01 Not detected 280 

JC04-02 Not detected 280 

JC04-03 Not detected 280 

Cluster 4 

JC05-01 Not detected 270 

JC05-02 Not detected 270 

JC05-03 Not detected 280 

JC06-01 Not detected 270 

JC06-02 Not detected 270 

JC06-03 Not detected 270 

JC07-01 Not detected 280 

JC07-02 Not detected 270 

JC07-03 Not detected 270 

Cluster 5 

JC08-01 Not detected 270 

JC08-02 Not detected 270 

JC08-03 Not detected 280 a 3 Detection limit for dissolved Pb in this analysis was 3 μg/L. 

4 
 Appendix F 

 

ICF International F-77 DRAFT – December 2006 

1 

2 Exhibit F-8. Mississippi River Measured Dissolved Pb Surface Water 

3 Concentration Data for Primary Pb Smelter Case Study (ELM 2005) 

Location with 

Respect to Facility 

and Sample ID No. 

Dissolved Pb 

Concentration for Surface 

Water (μg/L)a

Hardness 

(mg/L of 

CaCO3) 

Upstream 

PONAR04-01 Not detected 210 

Near Facility 

PONAR01-01 Not detected 220 

PONAR02-01 Not detected 230 

PONAR03-01 Not detected 230 

PONAR05-01 Not detected 230 

Downstream 

PONAR06-01 Not detected 240 

PONAR07-01 Not detected 230 a 4 Detection limit for dissolved Pb in this analysis was 3 μg/L. 

5 

6 Exhibit F-9. Other Surface Water, Drainage Areas and U-Shaped Pond, 

7 Measured Surface Water Dissolved Pb Concentration 

8 Data for Primary Pb Smelter Case Study (ELM 2005) 

Surface Waters and 

Sample ID No .

 a

Dissolved Pb 

Concentration for Surface 

Water (μg/L) b

Hardness 

(mg/L of CaCO3) 

Drainage Area Samples 

 

CHRDDP-01 (drainage) Not detected 700 

CHRDDP-02 (JC) Not detected 230 

 

RRDP-02 (MR) Not detected 240 

 

DAMUP-SW01 (drainage) Not detected 480 

DAMUP-02 (JC) Not detected 480 

U-Shaped Pond 

 

UPOND-01 Not detected 170 

UPOND-02 Not detected 170 

UPOND-03 Not detected 160 a 9 Abbreviations: JC = Joachim Creek; MR = Mississippi River.

b 10 Detection limit for dissolved Pb in this analysis was 3 μg/L. 

11 

12 
 Appendix F 

 

ICF International F-78 DRAFT – December 2006 

1 Exhibit F-10. Joachim Creek Measured Sediment Pb Concentration Data for 

2 Primary Pb Smelter Case Study (ELM 2005) 

Sample Cluster and Sample 

ID No. 

Pb Concentration in Dry 

Sediment (mg/kg) 

Cluster 1 

JC01-01 24.1 

JC01-02 53 

JC01-03 32.3 

Mean 36.5 

Standard deviation 14.9 

Cluster 2 

JC02-01A 79.9 

JC02-01B 55.4 

JC02-02 31 

JC02-03 57.6 

Mean 56.0 

Standard deviation 20.0 

Cluster 3 

JC03-01 44.3 

JC03-02 52.2 

JC03-03 54.8 

JC04-01 131 

JC04-02 164 

JC04-03 25.8 

Mean 78.7 

Standard deviation 55.3 

Cluster 4 

JC05-01 25.5 

JC05-02 23.8 

JC05-03 18.1 

JC06-01A 41.1 

JC06-01B 29.8 

JC06-02 23.3 

JC06-03 40.4 

JC07-01A 23.7 

JC07-01B 25.3 

JC07-02 36.7 

JC07-03 42 

Mean 30.0 

Standard deviation 8.5 

Cluster 5 

JC08-01 29 

JC08-02 35.2 

JC08-03 39.3 

Mean 34.5 

Standard deviation 5.2 
 Appendix F 

 

ICF International F-79 DRAFT – December 2006 

1 Exhibit F-11. Mississippi River Measured Sediment Pb Concentration Data 

2 for Primary Pb Smelter Case Study (ELM 2005) 

Location with 

Respect to Facility Sample ID No. Pb Concentration in Dry Sediment (mg/kg) 

Upstream PONAR04-SD01 10.5 

PONAR04-SD02 10.2 

PONAR04-SD03 15.8 

PONAR04-SD04 8.7 

PONAR04-SD05 28.3 

Mean 14.7 

Standard deviation 8.1 

Near Facility PONAR01-SD01 13.5 

PONAR01-SD02 11.5 

PONAR01-SD03 14.3 

PONAR01-SD04 17.6 

PONAR01-SD05 8.3 

PONAR02-SD01 37.3 

PONAR02-SD02 96.5 

PONAR02-SD03 37.8 

PONAR02-SD04 56.8 

PONAR02-SD05 84 

PONAR03-SD01 39.5 

PONAR03-SD02 17.8 

PONAR03-SD03 32.4 

PONAR03-SD04 48.9 

PONAR03-SD05 37.8 

PONAR05-SD01 16.1 

PONAR05-SD02 6.7 

PONAR05-SD03 9.1 

PONAR05-SD04 6.2 

PONAR05-SD05 10.3 

Mean 30.1 

Standard deviation 25.6 

Downstream PONAR06-SD01 8.4 

PONAR06-SD02 8.6 

PONAR06-SD03 12.9 

PONAR06-SD04 13 

PONAR06-SD05 9.3 

PONAR07-SD01 14.9 

PONAR07-SD02 11.5 

PONAR07-SD03 12.5 

PONAR07-SD04 18.2 

PONAR07-SD05 8.5 

RRDP-SD02 14.8 

Mean 12.1 

Standard deviation 3.2 

3 
 Appendix F 

 

ICF International F-80 DRAFT – December 2006 

1 Exhibit F-12. Other Surface Water, Drainage Areas and U-Shaped Pond, Measured 

2 Sediment Pb Concentration Data for Primary Pb Smelter Case Study (ELM 2005) 

Sampled Surface Water 

Body and Sample ID No. 

Pb Concentration 

in Dry Sediment 

(mg/kg) 

 Drainage Area 

CHRDDP 110 

Drainage Area 

RRDP-02 14.8 

 

U-Shaped Pond 

UPOND-01 190 

UPOND-02 278 

UPOND-03 153 

REFPOND-01 59.3 

Mean 170.1 

Standard deviation 90.6 

3 

4 

5 
 Appendix F 

 

ICF International F-81 DRAFT – December 2006 

1 F.3 Statistical Modeling for Estimating Pb Concentrations in House Dust for the 

2 Primary Pb Smelter 

3 

4 F.3.1 Purpose 

5 

6 The objective of the house dust analysis was to derive a statistical model that could be used to 

7 estimate Pb concentrations in house dust from Pb concentrations in other media at locations 

8 where the media concentrations had not been directly measured. The models derived were used 

9 to estimate house dust Pb concentrations for the census blocks closest to the primary Pb smelter. 

10 

11 F.3.2 Overview of Methods 

12 

13 The primary approach taken in this analysis was to derive regression-type models that describe 

14 the relationships among the environmental media concentrations at the primary Pb smelter case 

15 study location. This approach was informed by previous analysis completed by EPA and other 

16 researchers with similar data. It is possible that more complex approaches (e.g., structural 

17 equation modeling) might also be used to explore and/or confirm the relationships among the 

18 variables examined. Based on preliminary analyses of the data, the regression analyses were best 

19 justified by the quality and quantity of data that were available. 

20 

21 F.3.3 Data Sources 

22 

23 All of the data used in the analyses were obtained electronically from EPA Region 7 (2006). Pb 

24 concentrations in residential soil and house and road dust were obtained from samples taken by 

25 EPA contractors as part of Superfund investigations conducted in the area around the primary Pb 

26 smelter from March 2003 to May 2006 (see Exhibit F-13). The data set also contained Pb 

27 loading information related to indoor floor dust, dust obtained from wipe samples, and total dust. 

28 

29 UTM coordinates were provided for all of the samples and were used in the analysis of the 

30 spatial patterns of soil and dust contamination. From March 2002 to May 2006, concentrations 

31 of Pb in both house dust and residential soil were measured at only 17 locations (homes) near the 

32 primary Pb smelter. Pb concentrations in residential soil only were measured at 12 other 

33 residential locations, for which there were no accompanying Pb house dust measurements (see 

34 Exhibit F-13). Note that the soil measurements were taken post-remediation; thus, the effect of 

35 the facility operations on soil Pb concentrations (from stack emissions or road dust) are expected 

36 to be greatly attenuated compared to the soil Pb concentrations that existed prior to remediation. 

37 
 Appendix F 

 

ICF International F-82 DRAFT – December 2006 

1 Exhibit F-13. Primary Pb Smelter: Summary of Pb Concentrations in 

2 Residential Soil and House and Road Dust 

Data Field Sampling 

Locationsa Sampling 

Dates 

Samples per 

Location 

Mean (Range) 

Total 

Samples 

Distances to 

Main Stack 

Mean (Range) 

(m) 

Pb Concentration 

Mean (Range) 

mg/kg 

House Dust 17 March 2002 to 

May 2006 

9 

(3 to 20) 159 898 (395 to 1,594) 

1,544 

(348 to 3,812) 

Residential 

Soil 17 March 2002 to 

May 2006 

13 

(4 to 23) 215 898 

(395 to 1,594) 

81 

(31 to 139) 

Road Dust 21b May 2002 to 

April 2006 

42 

(14 to 139) 891 609 (161 to 1,693) 

28,300 

(1,570 to 111,000) 

a 3 Number of locations include both house dust and residential soil Pb data. 

b 4 Sampling locations with the same UTM coordinates were combined. 

5 

6 Anecdotal evidence suggested that road dust may be a major source of Pb in the air and in house 

7 dust at residences around the primary Pb smelter; therefore, an analysis was performed to 

8 identify the relationships between road dust Pb concentrations and house dust Pb concentrations. 

9 EPA contractors analyzed almost 900 road dust samples from May 2002 to April 2006. The road 

10 dust samples were taken from 21 locations ranging from 161 to about 1,700 meters (m) from the 

main stack.1 11 Pb sampling locations for road dust differed from the residential soil and house dust 

12 sample locations; the distance between road dust sampling locations and the 17 residential soil 

13 and house dust sampling locations ranged from 52 to 1328 m (average 280 m). 

14 

15 In the absence of spatially detailed air concentration monitoring data, the house dust levels were 

16 fit to modeled air concentrations. Long-term average air concentrations predicted in the ISC17 Prime “current conditions” runs for census block and block group centroids located near the 

18 residential house dust sampling locations were used (see Exhibit F-14). Again, the centroids 

19 were not precisely co-located with any of the house dust sampling locations. 

 

1

 Samples were taken from both lanes of the road at most sites, but the results have been combined, using averages 

or geometric means, for samples from “inbound” and “outbound” lanes. 
From Non-Air 

Sources

From Air-Related 

Sources Total

From Non-Air 

Sources

From Air-Relat

Sources 

290997006014042 1 52 5211 5263 52 3283 290997006014039 5 52 5146 5198 52 3283 290997006014052 1 52 4613 4664 52 2752 290997006014032 1 52 4211 4262 52 3283 290997006014033 1 52 3829 3881 52 3273 290997006014051 6 52 2937 2989 52 2777 290997006014046 5 52 2899 2951 52 2899 290997006014027 14 52 2139 2191 52 2139 290997006014043 2 52 2074 2126 52 2074 290997006014049 1 52 1929 1981 52 1929 290997006014028 2 52 1755 1806 52 1755 290997006014029 1 52 1540 1591 52 1540 290997006014050 1 52 1444 1496 52 1444 290997006014044 6 52 1096 1148 52 1096 290997006015016 8 52 854 905 52 854 290997006014025 13 52 846 898 52 846 290997006015017 6 52 741 792 52 741 290997006015015 2 52 734 786 52 734 290997006014021 2 52 564 616 52 564 290997006015012 5 52 501 552 52 501 290997006015018 2 52 499 551 52 499 290997006015001 11 52 481 533 52 481 290997006015013 1 52 459 511 52 459 290997006015011 1 52 432 483 52 432 290997006015019 5 52 357 409 52 357 290997007002006 1 31 132 163 31 132 290997007002009 1 31 67 98 31 67 290997007002011 3 31 57 88 31 57 290997007002012 3 31 55 86 31 55 290997006014018 3 31 53 84 31 53 290997006014015 15 31 38 69 31 38 290997008001049 4 31 37 68 31 37 290997008001047 2 31 33 64 31 33 

Exhibit F-14. Primary Pb Smelter: Modeled Indoor Dust Concentrations

Block Group or Block 

FIPS

Children 

Ages 0 to 7 

Years in 

2000

Current Conditions Scenario: Predicted Indoor 

Dust Concentrations (mg/kg)

Attainment Scenario: Predic

Concentrations (m

ICF International F-83 
From Non-Air 

Sources

From Air-Related 

Sources Total

From Non-Air 

Sources

From Air-Relat

Sources 

Exhibit F-14. Primary Pb Smelter: Modeled Indoor Dust Concentrations

Block Group or Block 

FIPS

Children 

Ages 0 to 7 

Years in 

2000

Current Conditions Scenario: Predicted Indoor 

Dust Concentrations (mg/kg)

Attainment Scenario: Predic

Concentrations (m

290997007002016 29 31 33 64 31 33 290997007002017 1 31 30 61 31 30 290997006014006 1 31 30 61 31 30 290997006014007 1 31 29 60 31 29 

290997006013 176 31 28 60 31 28 

290997006012065 2 31 26 58 31 26 290997006015002 95 31 26 57 31 26 290997007002029 46 31 25 57 31 25 290997008001000 3 31 25 56 31 25 290997008001045 4 31 25 56 31 25 290997007002033 23 31 24 56 31 24 290997008001044 3 31 24 55 31 24 290997007002030 7 31 24 55 31 24 290997007002032 13 31 24 55 31 24 

290997008004 197 31 23 55 31 23 

290997007002014 2 31 23 55 31 23 290997007002031 4 31 23 55 31 23 290997007002028 6 31 23 54 31 23 

290997007003 77 31 22 53 31 22 

290997008001019 2 31 22 53 31 22 

290997006011 45 31 21 53 31 21 

171336003001019 1 31 20 52 31 20 290997006012057 3 31 20 52 31 20 290997007002021 12 31 20 51 31 20 171336002001059 3 31 20 51 31 20 290997006012052 79 31 19 51 31 19 290997006012053 9 31 19 50 31 19 171336002001058 5 31 19 50 31 19 290997006012051 5 31 18 50 31 18 290997008001023 2 31 18 49 31 18 171336002001044 34 31 18 49 31 18 290997006012062 2 31 18 49 31 18 290997008001030 14 31 17 48 31 17 

ICF International F-84 
From Non-Air 

Sources

From Air-Related 

Sources Total

From Non-Air 

Sources

From Air-Relat

Sources 

Exhibit F-14. Primary Pb Smelter: Modeled Indoor Dust Concentrations

Block Group or Block 

FIPS

Children 

Ages 0 to 7 

Years in 

2000

Current Conditions Scenario: Predicted Indoor 

Dust Concentrations (mg/kg)

Attainment Scenario: Predic

Concentrations (m

290997006031 737 31 17 48 31 17 

290997006012049 3 31 17 48 31 17 171336002001056 3 31 16 48 31 16 171336003001003 11 31 16 47 31 16 171336002001050 9 31 16 47 31 16 290997008001036 10 31 16 47 31 16 290997008001035 8 31 16 47 31 16 290997008001031 8 31 16 47 31 16 290997008001034 3 31 15 47 31 15 290997008001032 3 31 15 46 31 15 171336002001066 1 31 15 46 31 15 

290997008005 104 31 15 46 31 15 

290997007002025 1 31 15 46 31 15 290997008001029 3 31 15 46 31 15 290997008001037 8 31 14 46 31 14 171336002001057 3 31 14 45 31 14 

290997007004 49 31 14 45 31 14 

290997008001017 22 31 14 45 31 14 

290997008002 92 31 13 45 31 13 

171336002001051 2 31 13 45 31 13 

290997008007 141 31 13 44 31 13 

290997006012001 7 31 13 44 31 13 

290997008006 58 31 13 44 31 13 

290997006012021 6 31 13 44 31 13 290997006012044 3 31 12 44 31 12 

290997007001 70 31 12 43 31 12 

290997006012030 3 31 12 43 31 12 290997006012041 2 31 12 43 31 12 290997006012031 1 31 11 43 31 11 171336002001041 8 31 11 43 31 11 

290997009002 86 31 11 42 31 11 290997006051 62 31 11 42 31 11 

290997006012019 3 31 11 42 31 11 

ICF International F-85 
From Non-Air 

Sources

From Air-Related 

Sources Total

From Non-Air 

Sources

From Air-Relat

Sources 

Exhibit F-14. Primary Pb Smelter: Modeled Indoor Dust Concentrations

Block Group or Block 

FIPS

Children 

Ages 0 to 7 

Years in 

2000

Current Conditions Scenario: Predicted Indoor 

Dust Concentrations (mg/kg)

Attainment Scenario: Predic

Concentrations (m

290997009001 120 31 11 42 31 11 

290997008001042 3 31 10 42 31 10 290997008001003 1 31 10 42 31 10 290997006012013 5 31 10 42 31 10 171336002001060 2 31 10 42 31 10 

290997006054 63 31 10 41 31 10 290997008003 72 31 10 41 31 10 

171336003001017 2 31 10 41 31 10 290997006012018 1 31 10 41 31 10 290997006012022 3 31 10 41 31 10 290997006012014 4 31 10 41 31 10 290997006012016 8 31 9 41 31 9 290997006012005 2 31 9 41 31 9 290997006012006 2 31 9 41 31 9 

290997001044 164 31 9 40 31 9 

290997006012004 1 31 9 40 31 9 290997008001006 5 31 9 40 31 9 290997006012003 12 31 9 40 31 9 

290997009003 254 31 8 39 31 8 290997007005 74 31 8 39 31 8 290997010001 145 31 7 39 31 7 

171336002001030 3 31 7 38 31 7 

290997006053 139 31 7 38 31 7 

171336003001015 1 31 7 38 31 7 171336003001000 11 31 6 38 31 6 171336002001003 1 31 6 37 31 6 171336002001029 4 31 6 37 31 6 171336003001063 1 31 6 37 31 6 171336003001009 1 31 6 37 31 6 171336003001055 2 31 6 37 31 6 171336002001015 4 31 6 37 31 6 171336003001066 1 31 6 37 31 6 171336003001065 4 31 6 37 31 6 

ICF International F-86 
From Non-Air 

Sources

From Air-Related 

Sources Total

From Non-Air 

Sources

From Air-Relat

Sources 

Exhibit F-14. Primary Pb Smelter: Modeled Indoor Dust Concentrations

Block Group or Block 

FIPS

Children 

Ages 0 to 7 

Years in 

2000

Current Conditions Scenario: Predicted Indoor 

Dust Concentrations (mg/kg)

Attainment Scenario: Predic

Concentrations (m

290997006052 187 31 5 37 31 5 

171336002001104 1 31 5 37 31 5 171336002001101 1 31 5 37 31 5 171336002001022 1 31 5 36 31 5 171336002001023 4 31 4 35 31 4 

ICF International F-87 
 Appendix F 

 

ICF International F-88 DRAFT – December 2006 

1 

2 

3 F.3.4 Data Manipulation 

4 

5 Developing house dust prediction models for the primary Pb smelter presented a number of 

6 challenges. Primary among these challenges was that the house dust, residential soil, and road 

7 dust measurements were not taken at the same time. In addition, as noted above, the road dust 

8 and air modeling input data were spatially removed from the residential house dust sampling 

9 locations. For these reasons, two approaches were taken to develop data sets for the regression 

10 analyses. 

11 

12 F.3.4.1 Data Set Based on Spatial-Temporal “Windows”

13 

14 The first approach involved identifying observations from each of the various environmental 

15 media that were “close” together in time and space, and using these data to create composite data 

16 points. Each data point represented the mean or geometric mean value of all of the observations 

17 in each medium within defined spatial and temporal “windows” of the nearest residential house 

18 dust observation. The house dust observations were used as the centers of the “windows” 

19 because there were fewer house dust observations than for any other medium (and because house 

20 dust was the “dependent” variable whose values were being predicted). The dimensions of the 

21 windows were defined for two purposes: 

22 

23 1. Maintain, to the extent possible, the temporal and spatial relationships between the house 

24 dust measurements and the measured/estimated concentrations in the other media; and 

25 2. Include as many input data as possible per window. 

26 

27 After looking at a number of possible approaches to stratify the data, window “dimensions” were 

28 chosen with the following spatial and temporal boundaries: 

29 

30 • House dust measurements from the same location occurring within ± 30 days of each 

31 other. 

32 

33 • Residential soil measurements within ± 30 days of the nearest house dust sampling date 

34 for the same residence (soil and house dust measurements were taken from the same 

35 locations, so no spatial window was necessary). 

36 

37 • Road dust Pb measurements from all of the sampling locations within 300 m, or the 

38 closest road dust sampling location, taken within ± 60 days of the house dust sample. If 

39 there was no road dust sampling location within 300 m, then the measurements from the 

40 nearest road dust sampling locations were used. For five homes, there were no road dust 

41 samples taken within 60 ± days of any house dust sampling events. In these cases, all of 

42 the road dust results from within 300 m, or from the closest road dust sampling location, 

43 were averaged as above, and associated with the house dust sampling dates in the 

44 database. 

45 
 Appendix F 

 

ICF International F-89 DRAFT – December 2006 

1 • Average long-term air Pb concentrations estimated for census block centroids within 200 

2 m of each house dust Pb measurement. Most house dust sampling locations had several 

3 centroids less than 200 m away, but it was found that averaging the air Pb levels within 

4 200 m produced the highest correlations with the house dust samples. Because no 

5 specific date is associated with the estimated air Pb concentrations, the same air 

6 concentration values were used for all “windows” for each house dust location. 

7 

8 The resulting data set contained 125 records comprised of air, residential soil, and house and 

9 road dust data, along with a number of other auxiliary variables relating to location, distance 

10 from the main stack, and sampling dates. 

11 

12 F.3.4.2 Data Set Based on House Dust Sampling Locations 

13 

14 The number of samples (and therefore the amount of information) combined into the 

15 observations for the individual “windows” varied greatly. The “house” data set, which combines 

16 all of the data for each house dust sampling location was developed in order to avoid giving 

17 undue weight to points with little observational data. The “house” data set includes 17 values for 

18 each variable. Each value corresponds to the mean (or geometric mean) of all of the values for 

19 that variable for all the “windows” associated with a given house dust sampling location. As 

20 described below, the modeling results obtained using the “windows” and the “house” data sets 

21 are quite similar. 

22 

23 F.3.5 Results of the Statistical Analysis 

24 

25 F.3.5.1 Exploratory Analysis

26 

27 A number of exploratory analyses were conducted to confirm the general relationships within the 

28 data set, and to rule out the potential for omitted variables to affect the results of the regression 

29 analysis. The exploratory analyses included graphical summaries and calculation of simple 

30 correlation coefficients among the variables and their log-transformed values. 

31 

32 For House 3, there were two house dust Pb measurements (5,230 and 23,640 mg/kg) that were 

33 very different from all other measurements taken at that house (mean = 1,190 mg/kg, 15 

34 samples). The two different measurements were the last two samples taken at House 3 (in April 

35 and October 2005). It was decided to omit the two measurements from the analysis on the 

36 grounds that there may have been some factor affecting house dust Pb concentrations during this 

37 period that had not been operating previously. After removal of these two data points, the house 

38 dust Pb concentrations in the “windows” data set were well-represented by a lognormal 

39 distribution, and thus both the untransformed and log-transformed house dust Pb values were 

40 included in the regression analyses, as discussed below. 

41 

42 As expected, average house dust Pb concentrations were found to be highly (inversely) 

43 correlated with distance to the main stack, when the “windows” data set was used (see Exhibit F44 15). If it is believed that Pb in air is a major contributor to house dust Pb levels, these results are 

45 to be expected. A weak, but significant inverse correlation between house dust Pb 

46 concentrations and residential soil Pb was found. The reason for this correlation was not clear, 
 Appendix F 

 

ICF International F-90 DRAFT – December 2006 

1 and the correlation loses significance in some, but not all, regression models when measures of 

2 air Pb are also included. Average and log-transformed road dust Pb concentrations were found 

3 to be weakly correlated with similarly expressed house dust Pb statistics, but the correlations lost 

4 significance when included in models with residential soil and air Pb (see Exhibit F-16). 

5 

6 Exhibit F-15. Primary Pb Smelter: Relationship Between House Dust Pb 

7 Concentrations and Distance from Main Stack 

y = -1.2552x + 2451.5

R2

 = 0.1544

0

1,000

2,000

3,000

4,000

5,000

6,000

300 600 900 1,200 1,500 1,800

Distance from the Main Stack (m)

House Dust Pb Concentration 

(μg/g)

8 

9 
 Appendix F 

 

ICF International F-91 DRAFT – December 2006 

1 Exhibit F-16. Primary Pb Smelter: Relationship Between Road Dust Pb 

2 Concentrations and Nearby House Dust Pb Concentrations

y = 0.0126x + 1167.2

R2

 = 0.0129

0

1,000

2,000

3,000

4,000

5,000

6,000

0 10,000 20,000 30,000 40,000 50,000

Road Dust Pb Concentration (μg/g)

House Dust Pb Concentration

(μg/g)

3 

4 

5 F.3.5.2 Regression Modeling 

6 

7 A systematic search for multiple regression models was conducted to maximize the proportion of 

explained variance (R2 8 ) in house dust (DustPb) and the log-transformed house dust (lnDustPb) 

9 values. Forwards and backwards stepwise regression methods were used, with contribution to 

10 the F-statistic as the inclusion/removal criterion for untransformed and log-transformed 

11 variables. Residential soil and road dust Pb were “forced” back into well-fitted models to 

determine their effect on R2 12 and on the coefficients for other variables. Probability plots of 

13 residuals and other diagnostics were used to evaluate the quality of the fit and to look for failures 

14 in assumptions required to produce unbiased estimates. Results of the best regressions derived 

15 from the “windows” data set are summarized in Exhibit F-17. 

16 
 Appendix F 

 

ICF International F-92 DRAFT – December 2006 

1 Exhibit F-17 Indoor Dust Regression Models Tested and Summary of Regression 

Analysis Results for the “Windows” Data Set a,b 2 

Model Independent 

Variable 

Dependent 

Variable(s) 

Estimated 

Values (m) 

Coefficient 

p-Value(s) Adjusted R2

Intercept 685.7 0.000 W1 DustPb 

AIR_200 1625.2 0.000 

0.322 

Intercept 1012.5 0.000 

W2 DustPb SoilAvg -4.699 0.002 

AIR_200 1687.2 0.000 

0.367 

Intercept 2285.6 0.000 W3 DustPb

lnAIR200 791.0 0.000 

0.343 

Intercept 2863.2 0.000 

W4 DustPb SoilAvg -6.317 0.000 

lnAIR200 874.7 0.000 

0.426 

 

 

Intercept 6.4540 0.000 W5 LnDustPb 

AIR_200 1.2361 0.000 

0.268 

Intercept 6.6725 0.000 

W6 LnDustPb SoilAvg -0.0031 0.020 

AIR_200 1.2777 0.000 

0.294 

Intercept 7.7366 0.000 W7 LnDustPb 

lnAIR200 0.6520 0.000 

0.336 

Intercept 8.1506 0.000 

W8 LnDustPb SoilAvg -0.0045 0.000 

lnAIR200 0.7120 0.000 

0.395 

a 3 Abbreviations: DustPb = Pb concentration in house dust; LnDustPb = log-transformed 

4 value; AIR_200 = ambient air concentration within 200 meters (m) of house dust sampling 

5 locations; lnAIR200 = log-transformed concentration; and SoilAvg = average residential soil 

6 Pb concentration. 

b 7 Models labeled “W” were developed considering media concentrations within a particular 

8 spatial distance and temporal period of the nearest house dust observation. 

9 

10 In all of the regressions, it was found that variables representing ambient air Pb concentrations at 

11 monitors within 200 m of house dust sampling locations (AIR200, lnAIR200) accounted for the 

12 bulk of explained variance in house dust Pb levels (see Exhibit F-17). The only other variable 

13 related to environmental concentrations that retained significance and/or resulted in increases in 

14 explained variance was the average residential soil Pb (SoilAvg). Surprisingly, the sign of the 

15 coefficient for residential soil Pb was consistently negative in those regressions where it was 

16 statistically significant. When the natural log of house dust Pb concentration (LnDustPb) was 

used as the “independent” variable, the R2 17 values for regressions including air and residential soil 

18 Pb levels were reduced slightly compared to the results obtained for the analogous regressions 

19 using the untransformed DustPb values. However, the pattern of regression residuals was 

20 considerably improved (more nearly normal) when the log-transformed house dust was fit 

21 instead of the untransformed values. No variables representing road dust Pb concentration were 
 Appendix F 

 

ICF International F-93 DRAFT – December 2006 

1 ever found to retain statistical significance when air-related variables were included in the 

2 regression models. 

3 

4 Similar results were found when regressions were fit using the “house” data set, as shown in 

5 Exhibit F-18. Similar coefficient values are seen for analogous regressions based on the two data 

6 sets. One difference from the results obtained using the “windows” data was that, when Air200 

7 was included in the regression, SoilAvg became statistically insignificant. Residential soil was 

8 significant in the other variants of the model shown in Exhibit F-18. As with the “windows” data 

9 set, the road dust Pb was never a significant predictor of house dust Pb levels. Also, patterns of 

10 residuals were again superior when the models were fit to LnDustPb, rather than DustPb. The 

11 results (coefficients and significance) were not significantly altered when regressions were 

12 conducted weighted by the numbers of observations at each house, instead of uniformly 

13 weighted. 

14 

Exhibit F-18. Summary of Regression Analysis Results for the “House” Data Set a,b 15 

Model Independent 

Variable 

Dependent 

Variable(s) 

Estimated 

Values (m) 

Coefficient 

p-Value(s) Adjusted R2

Intercept 701.2 0.008 H1 DustPb 

Air200 1573.1 0.001 

0.489 

Intercept 2447.1 0.000 H2 DustPb 

LnAir200 883.4 0.000 

0.609 

Intercept 3313.2 0.000 

H3 DustPb SoilAvg -11.349 0.019 

LnAir200 946.9 0.000 

0.722 

Intercept 6.3928 0.000 H4 LnDustPb 

Air200 1.2185 0.002 

0.447 

Intercept 7.7892 0.000 H5 LnDustPb 

LnAir200 0.7200 0.000 

0.625 

Intercept 8.3884 0.000 

H6 LnDustPb SoilAvg -0.0079 0.045 

LnAir200 0.7639 0.000 

0.701 

a 16 Abbreviations: DustPb = Pb concentration in house dust; LnDustPb = log-transformed 

17 value; AIR_200 = ambient air concentration within 200 meters (m) of house dust sampling 

18 locations; LnAIR200 = log-transformed concentration; and SoilAvg = average residential soil 

19 Pb concentration. 

b 20 Models labeled “H” were created considering all of the data for each house dust sampling 

21 location. 

22 

23 F.3.5.3 Comparison of Predicted to Observed Dust Pb Concentrations at 

24 Primary Pb Smelter 

25 

26 In order to evaluate potential approaches for estimating house dust Pb levels at the primary Pb 

27 smelter, the estimated house dust Pb concentrations derived using several of the better-fitting 

models (as judged by adjusted R2 28 values) were compared based on the “windows” data (see 

29 Exhibit F-19). 
 Appendix F 

 

ICF International F-94 DRAFT – December 2006 

1 

2 Exhibit F-19. Comparison of Three Best "Windows" Models with EPA 

3 AGG (Air+Soil) Model and “Windows” Data

0

1,000

2,000

3,000

4,000

5,000

0.0 0.5 1.0 1.5 2.0

Ambient Air Pb Concentration (μg/m3

)

Predicted House Dust Pb Concentration 

(μg/g)

Model W4

Model W8

Model W2

AGG-Soil

"Windows" Data

4 

5 

6 Exhibit F-20 shows the dust concentrations predicted by the three best-fitting models derived 

7 using the “house” data. For models that included coefficients for residential soil Pb (all except 

8 H5), the assumed residential soil Pb concentration was held constant at its mean value. In both 

9 cases, the predictions are compared to those derived using EPA’s AGG Model (Soil+Dust) 

10 model (USEPA 1989, see also Section 4.1.4). 
 Appendix F 

 

ICF International F-95 DRAFT – December 2006 

1 

2 Exhibit F-20. Comparison of Best-Fitting "House" Models with the EPA 

3 AGG (Air+Soil) Model and the "Windows" House Dust Data 

0

1,000

2,000

3,000

4,000

5,000

0.0 0.5 1.0 1.5 2.0

Ambient Air Pb Concentration (μg/m3

)

Predicted House Dust Pb Concentration 

(μg/g)

Model H3

Model H6

"Windows" Data

AGG-Soil

Model H5

4 

5 

6 It can be seen that the models derived from the “windows” and “house” data sets have generally 

7 the same form. The relationships were highly curved and negative house dust values were 

8 predicted at low air concentrations, when the models were fit to untransformed house dust data 

9 (W4, H3). For the “windows” models, predicted house dust Pb concentration values were very 

10 similar when the model was fit using untransformed air concentrations (W2) or log-transformed 

11 values (W8.) Also, predicted house dust Pb levels were very similar for the two log-log “house” 

12 models when soil concentration was included (H6) or excluded (H6) from the model. 

13 

14 All of the models predicted substantially higher house dust Pb concentrations than the EPA AGG 

15 (Air + Soil) model. In addition, the AGG model predicts house dust levels that are far below the 

16 observed values. 

17 

18 F.3.6 Primary Pb Smelter: Selection of the House Dust Modeling Approach 

19 

20 The original intent in the pilot phase was to use the same house dust estimation approach across 

21 all of the case studies and exposure scenarios to maintain consistency and comparability. As 

22 discussed in Chapter 4, EPA’s generic AGG regression models (U.S. EPA 1989) were selected 

23 as the primary tools for estimating house dust Pb concentrations for the secondary Pb smelter 

24 and near roadway case studies. However, the availability of site-specific house dust and 

25 residential soil concentration data from the primary Pb smelter case study location raised the 

26 possibility of developing site-specific models as described above. The modeling approach that 

27 was ultimately selected for the primary Pb smelter represents a compromise that combines the 
 Appendix F 

 

ICF International F-96 DRAFT – December 2006 

1 site-specific and generic models based on their applicability to specific areas covered in the case 

2 study. 

3 

4 As shown in Exhibit F-15, soil and house dust samples from which the site-specific models were 

5 developed were available only out to a distance of about 1,600 m from the facility’s main stack. 

6 Thus, using the site-specific model to predict house dust Pb concentrations at greater distances 

7 would be subject to great uncertainty. Thus, the decision was made to use the site-specific model 

8 H6 to predict house dust Pb concentrations at centroids out to a distance of 1.5 km from the site, 

9 and to use the AGG (Air + Dust) generic model to predict house dust Pb levels for the large 

10 majority of the centroids at greater distances. As shown in Exhibit F-21, the H6 model predicted 

11 much higher house dust concentrations at centroids closer to the facility than the AGG model, 

12 but at longer distances, the predictions (to the extent that the comparison is valid) became more 

13 similar. For centroids around 1,500 m (1.5 km) from the facility, the average H6 model 

14 predicted house dust Pb concentrations of 310 μg/g, while the average AGG (Air + Soil) 

15 prediction was approximately 270 μg/g. At 5,000 m (5 km), the average predictions from the 

16 two models were 120 μg/g and 80 μg/g, respectively. 

17 

18 Exhibit F-21. Ratio of House Dust Concentrations Predicted by the H6 and AGG 

19 (Air+Soil) Models versus Distance from the Main Stack for the Primary Pb 

20 Smelter Case Study Census Block Centroids 

0.0

1.0

2.0

3.0

4.0

5.0

0 5,000 10,000 15,000

Census Block Centroid Distance from the Main Stack (m)

Ratio of H6 to AGG (Air+Soil) House Dust 

Predictions

21 
 Appendix F 

 

ICF International F-97 DRAFT – December 2006 

1 References 

2 ELM Consulting LLC. (2005) Characterization Area Investigation Report. July. 

3 U.S. Environmental Protection Agency (USEPA) Region 7. (2006) Herculaneum Lead Master 

4 090804 (Microsoft Access Database). Obtained from Region 7 and Updated with 2005 and 2006 

5 Data.

6 U.S. Environmental Protection Agency (USEPA). (1989) Review of the National Ambient Air 

7 Quality Standard for Lead: Exposure Analysis Methodology and Validation. Research Triangle 

8 Park, NC: Office of Air Quality Planning and Standards. EPA-450/2-89-011. June.

9 

 

 

Appendix G 

Secondary Pb Smelter Case Study 

Media Concentrations 
 

 
 Appendix G 

 

ICF International G-1 DRAFT – December 2006 

1 Appendix G presents summaries of the Pb air concentrations and dry deposition rates obtained 

2 from modeling the area around the secondary Pb smelter. Exhibit G-1 shows the ratios of 

3 exposure concentrations to ambient air concentrations from the National Air Toxics Assessment 

4 (NATA) for the Census tracts surrounding the secondary Pb smelter facility. Exhibit G-2 

5 contains block-level summaries of modeled annual average air concentrations and dry deposition 

6 rates for Pb; counts of population and children under seven years of age; modeled annual average 

7 exposure concentrations for the general population and children under four years of age; and the 

8 modeled soil Pb concentrations (based on total deposition). Exhibit G-3 presents the modeled 

9 indoor dust concentrations of Pb for the case study. Exhibit G-4 contains input parameters for 

10 the secondary Pb smelter facility soil calculations. Additional discussion regarding these 

11 modeling results is provided in Chapter 4 of the report. 

12 
Appendix G

Tract FIPS

HAPEM/ASPEN Ratios 

for Children Ages 0 to 

4 Years

01109988900 0.46

01109989000 0.44

01109989100 0.45

01109989200 0.45

Exhibit G-1. Secondary Pb Smelter: Ratios of Exposure Concentrations to 

Ambient Air Concentrations from NATA for Study Area

ICF International G-2 DRAFT - December 2006
Block FIPS UTMx UTMy

Distance 

from 

Source 

(m)

Pop 

2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb 

Air Conc. 

(μg/m3)

Modeled 

Average 

Annual Pb 

Air Exposure 

Conc. for 

Population 

(μg/m3)

Children Ages 0 to 

4 Years Modeled 

Average Annual 

Pb Air Exposure 

Conc. (μg/m3)

Total 

Deposition 

(g/m2/year)

Modeled 

Soil Pb 

Conc. 

(mg/kg)

Model

Pb C

Pl

Backg

(mg

[From 

AERMOD 

modeling]

[From NATA 

ratios]

[For children ages 

0 to 4 years, from 

NATA ratios]

[From 

AERMOD 

modeling]

[From 

MPE soil 

mixing]

[From 

soil m

011099890003045 596945.89 3516998.82 308 8 0 0.53547 0.21315 0.23796 0.435192 367.73 382011099890003046 597384.76 3517378.86 584 22 2 0.08634 0.03437 0.03837 0.040328 33.14 48011099890002042 597048.30 3517914.85 683 29 1 0.06387 0.02543 0.02839 0.029802 31.70 46011099890003042 595760.05 3517699.22 1132 64 6 0.04204 0.01673 0.01868 0.015370 12.63 27011099890002050 597768.32 3517688.87 1044 44 5 0.03153 0.01255 0.01401 0.011616 10.57 25011099890002051 597843.54 3517381.20 1039 9 0 0.03048 0.01213 0.01355 0.012110 9.95 24011099890002049 597868.49 3517835.95 1198 15 0 0.02569 0.01022 0.01141 0.008990 8.18 23011099890002041 597471.11 3518350.18 1262 8 1 0.02557 0.01018 0.01136 0.009540 10.15 25011099890003137 597982.25 3516826.22 1255 41 1 0.02529 0.01007 0.01124 0.012738 11.59 26011099890002048 597803.82 3518119.53 1304 2 0 0.02426 0.00966 0.01078 0.008204 7.61 22011099891003019 598086.36 3517373.43 1280 3 0 0.02114 0.00855 0.00955 0.007946 7.23 22011099891003011 598045.45 3517692.51 1304 8 1 0.02103 0.00850 0.00950 0.007204 6.56 21011099891003012 598018.66 3517884.74 1354 29 2 0.02048 0.00828 0.00925 0.006894 6.27 21011099891003018 598124.43 3517443.33 1325 10 0 0.02007 0.00811 0.00906 0.007288 6.63 21011099890002047 597778.54 3518333.95 1435 18 3 0.01990 0.00792 0.00884 0.006830 6.22 21011099890003139 598176.93 3516722.25 1474 18 0 0.01933 0.00770 0.00859 0.009412 8.57 23011099890003138 598215.10 3517052.16 1423 30 4 0.01927 0.00767 0.00856 0.007830 7.13 22011099890002039 597690.35 3518557.85 1556 45 3 0.01850 0.00736 0.00822 0.006386 5.81 20011099890002026 596955.29 3518834.09 1566 57 5 0.01823 0.00726 0.00810 0.006612 7.03 22011099890002023 596485.56 3518721.84 1483 257 32 0.01813 0.00722 0.00806 0.005934 6.31 21011099891003021 598208.76 3517356.46 1401 7 0 0.01810 0.00732 0.00817 0.006652 6.05 21011099890003141 598221.39 3516573.52 1576 21 0 0.01799 0.00716 0.00799 0.009078 7.46 22011099891003013 597960 3518349.78 1574 121 5 0.01766 0.00714 0.00797 0.005638 5.13 20011099890002025 596744.76 3518890.56 1617 16 2 0.01764 0.00702 0.00784 0.006264 6.66 21011099890002038 597786.31 3518512.40 1576 46 5 0.01742 0.00693 0.00774 0.005924 5.39 20011099891003010 598223.62 3517693.2 1474 44 1 0.01699 0.00687 0.00767 0.005592 5.09 20011099891003009 598271.58 3517538.46 1485 25 2 0.01672 0.00676 0.00755 0.005692 5.18 20011099890002024 596571.02 3518877.84 1621 54 14 0.01661 0.00661 0.00738 0.005452 5.80 20011099890002033 597585.35 3518738.26 1656 7 0 0.01655 0.00659 0.00736 0.005632 5.13 20011099890002032 597527.66 3518740.73 1632 15 0 0.01642 0.00654 0.00730 0.005704 5.19 20011099890002036 597702.68 3518709.13 1689 24 3 0.01642 0.00653 0.00730 0.005518 5.02 20011099890002031 597436.39 3518744.91 1598 17 0 0.01621 0.00645 0.00720 0.005820 5.30 20

[From 2000 

U.S. Census]

[Centroid coordinates in 

NAD83]

Exhibit G-2. Secondary Pb Smelter: Current Conditions Scenario Media Concentrations

ICF International G-3 
Block FIPS UTMx UTMy

Distance 

from 

Source 

(m)

Pop 

2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb 

Air Conc. 

(μg/m3)

Modeled 

Average 

Annual Pb 

Air Exposure 

Conc. for 

Population 

(μg/m3)

Children Ages 0 to 

4 Years Modeled 

Average Annual 

Pb Air Exposure 

Conc. (μg/m3)

Total 

Deposition 

(g/m2/year)

Modeled 

Soil Pb 

Conc. 

(mg/kg)

Model

Pb C

Pl

Backg

(mg

[From 

AERMOD 

modeling]

[From NATA 

ratios]

[For children ages 

0 to 4 years, from 

NATA ratios]

[From 

AERMOD 

modeling]

[From 

MPE soil 

mixing]

[From 

soil m

[From 2000 

U.S. Census]

[Centroid coordinates in 

NAD83]

Exhibit G-2. Secondary Pb Smelter: Current Conditions Scenario Media Concentrations

011099891003022 598350.04 3517255.01 1540 13 1 0.01551 0.00627 0.00700 0.005678 5.17 20011099890002037 597812.91 3518703.13 1745 21 1 0.01535 0.00611 0.00682 0.005070 4.61 19011099891003023 598433.21 3517108.67 1632 13 4 0.01506 0.00609 0.00680 0.005588 5.09 20011099891002021 597707.54 3518832.13 1797 8 0 0.01493 0.00604 0.00674 0.004892 4.45 19011099890003140 598413.07 3516694.27 1705 56 5 0.01493 0.00594 0.00664 0.006740 6.13 21011099890002027 596966.10 3519056.91 1789 104 9 0.01486 0.00592 0.00660 0.005164 4.70 19011099891003014 598030.8 3518507.67 1735 18 0 0.01474 0.00596 0.00666 0.004618 4.20 19011099890003094 597006.49 3515773.92 1514 21 1 0.01454 0.00579 0.00646 0.006922 5.69 20011099890003102 595847.65 3516333.48 1346 2 0 0.01430 0.00569 0.00636 0.005202 5.59 20011099891003015 597967.8 3518615.91 1772 22 0 0.01419 0.00573 0.00641 0.004542 4.13 19011099891002018 597832.35 3518830.29 1861 37 5 0.01408 0.00569 0.00636 0.004558 4.15 19011099891003025 598501.53 3517165.76 1695 44 9 0.01373 0.00555 0.00620 0.004932 4.05 19011099890002029 597445.00 3518926.39 1769 7 1 0.01363 0.00543 0.00606 0.004772 4.34 19011099890002028 597241.29 3518988.96 1767 23 4 0.01359 0.00541 0.00604 0.004760 5.06 20011099891002019 597753.76 3518949.47 1922 27 2 0.01348 0.00545 0.00609 0.004304 3.92 18011099891003008 598472.09 3517364.01 1664 117 7 0.01344 0.00543 0.00607 0.004666 3.83 18011099890002018 596922.55 3519203.64 1932 64 4 0.01341 0.00534 0.00596 0.004562 4.15 19011099890002019 596660.95 3519199.16 1930 14 2 0.01337 0.00532 0.00594 0.004330 3.94 18011099891003016 597977 3518733.91 1868 62 5 0.01319 0.00533 0.00596 0.004204 3.83 18011099890003087 597698.07 3515929.61 1612 31 3 0.01303 0.00519 0.00579 0.007136 6.49 21011099890003093 597133.93 3515772.10 1537 41 4 0.01302 0.00518 0.00579 0.006388 5.25 20011099890002020 596587.72 3519207.54 1945 8 0 0.01284 0.00511 0.00571 0.004030 3.67 18011099890002015 596849.94 3519327.92 2053 30 1 0.01237 0.00492 0.00550 0.004138 4.40 19011099891003017 598120.29 3518690.94 1929 81 0 0.01236 0.00500 0.00558 0.003756 3.42 18011099891002020 597662.52 3519041.32 1961 14 2 0.01230 0.00497 0.00555 0.003984 3.63 18011099890002022 596491.38 3519202.61 1954 20 4 0.01227 0.00488 0.00545 0.003712 3.38 18011099890003092 597245.86 3515771.14 1566 25 0 0.01191 0.00474 0.00529 0.005954 4.89 19011099891002010 597702.3 3519112.25 2042 3 0 0.01159 0.00469 0.00523 0.003686 3.35 18011099890003083 598193.76 3515950.45 1916 18 5 0.01153 0.00459 0.00512 0.006048 5.50 20011099891002013 597942.66 3519087.32 2137 63 1 0.01152 0.00466 0.00520 0.003530 3.21 18011099890003090 597503.32 3515766.52 1660 18 0 0.01149 0.00457 0.00511 0.005880 5.35 20011099890003088 597628.12 3515769.72 1713 13 2 0.01145 0.00456 0.00509 0.005960 5.42 20

ICF International G-4 
Block FIPS UTMx UTMy

Distance 

from 

Source 

(m)

Pop 

2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb 

Air Conc. 

(μg/m3)

Modeled 

Average 

Annual Pb 

Air Exposure 

Conc. for 

Population 

(μg/m3)

Children Ages 0 to 

4 Years Modeled 

Average Annual 

Pb Air Exposure 

Conc. (μg/m3)

Total 

Deposition 

(g/m2/year)

Modeled 

Soil Pb 

Conc. 

(mg/kg)

Model

Pb C

Pl

Backg

(mg

[From 

AERMOD 

modeling]

[From NATA 

ratios]

[For children ages 

0 to 4 years, from 

NATA ratios]

[From 

AERMOD 

modeling]

[From 

MPE soil 

mixing]

[From 

soil m

[From 2000 

U.S. Census]

[Centroid coordinates in 

NAD83]

Exhibit G-2. Secondary Pb Smelter: Current Conditions Scenario Media Concentrations

011099890003091 597367.28 3515768.25 1606 11 0 0.01141 0.00454 0.00507 0.005750 4.72 19011099890003086 597976.45 3515896.98 1805 29 1 0.01141 0.00454 0.00507 0.006062 4.98 19011099891003005 598664.77 3517648.04 1892 38 2 0.01127 0.00455 0.00509 0.003472 3.16 18011099891002017 598120.31 3518869.32 2064 15 1 0.01127 0.00455 0.00509 0.003420 3.11 18011099890001035 596510.45 3519371.09 2117 16 3 0.01103 0.00439 0.00490 0.003276 2.98 17011099890002030 597470.02 3519192.68 2028 6 0 0.01100 0.00438 0.00489 0.003708 3.44 18011099891001017 598560.9 3518427.07 2096 164 1 0.01094 0.00442 0.00494 0.003038 2.82 17011099891002011 597815.68 3519226.2 2195 32 1 0.01072 0.00433 0.00484 0.003276 2.98 17011099891003000 598659.21 3517958.38 1971 141 10 0.01071 0.00433 0.00484 0.003098 2.55 17011099891002012 597978.43 3519216.66 2266 42 4 0.01065 0.00430 0.00481 0.003176 2.89 17011099890003089 597850.22 3515772.83 1827 52 6 0.01062 0.00423 0.00472 0.005574 4.58 19011099891002007 597676.46 3519204.72 2115 23 1 0.01062 0.00429 0.00479 0.003380 3.13 18011099891003004 598724.81 3517760.48 1975 31 3 0.01042 0.00421 0.00471 0.003090 2.81 17011099890002011 597427.96 3519271.90 2090 5 0 0.01041 0.00414 0.00463 0.003498 3.24 18011099891002014 598121.13 3519053.75 2210 64 8 0.01037 0.00419 0.00468 0.003120 2.89 17011099891001012 598628.30 3518579.90 2238 19 0 0.01020 0.00412 0.00461 0.002770 2.57 17011099890002017 596258.29 3519370.74 2167 32 4 0.00985 0.00392 0.00438 0.002760 2.51 17011099890003082 598196.97 3515794.27 2029 31 3 0.00985 0.00392 0.00438 0.005036 4.58 19011099891003006 598821.73 3517527.6 2028 76 6 0.00984 0.00398 0.00444 0.003106 2.83 17011099890001026 596399.12 3519496.02 2259 71 7 0.00976 0.00388 0.00434 0.002732 2.49 17011099890003085 598338.13 3515797.63 2126 24 4 0.00965 0.00384 0.00429 0.004876 5.19 20011099891003028 598944.83 3517078.3 2144 34 3 0.00959 0.00388 0.00433 0.003196 2.91 17011099890001025 596273.89 3519451.51 2242 24 2 0.00954 0.00380 0.00424 0.002618 2.38 17011099891003027 599010.47 3516967.06 2222 5 0 0.00938 0.00379 0.00423 0.003198 2.91 17011099891002002 597966.97 3519426.17 2443 52 3 0.00936 0.00378 0.00423 0.002722 2.90 17011099891001011 598724.37 3518703.77 2389 294 0 0.00934 0.00378 0.00422 0.002474 2.29 17011099891002015 598266.09 3519105.52 2339 250 8 0.00934 0.00378 0.00422 0.002712 2.47 17011099891003003 598922.01 3517661.59 2147 54 1 0.00920 0.00372 0.00415 0.002736 2.49 17011099890001027 596886.13 3519780.76 2507 34 4 0.00917 0.00365 0.00407 0.002848 2.59 17011099891001001 598410.93 3518988.99 2345 292 0 0.00911 0.00368 0.00411 0.002532 2.69 17011099890003040 595439.63 3518836.04 2077 155 36 0.00904 0.00360 0.00402 0.002638 2.22 17011099891002003 597771.62 3519425.32 2356 80 5 0.00898 0.00363 0.00405 0.002736 2.49 17

ICF International G-5 
Block FIPS UTMx UTMy

Distance 

from 

Source 

(m)

Pop 

2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb 

Air Conc. 

(μg/m3)

Modeled 

Average 

Annual Pb 

Air Exposure 

Conc. for 

Population 

(μg/m3)

Children Ages 0 to 

4 Years Modeled 

Average Annual 

Pb Air Exposure 

Conc. (μg/m3)

Total 

Deposition 

(g/m2/year)

Modeled 

Soil Pb 

Conc. 

(mg/kg)

Model

Pb C

Pl

Backg

(mg

[From 

AERMOD 

modeling]

[From NATA 

ratios]

[For children ages 

0 to 4 years, from 

NATA ratios]

[From 

AERMOD 

modeling]

[From 

MPE soil 

mixing]

[From 

soil m

[From 2000 

U.S. Census]

[Centroid coordinates in 

NAD83]

Exhibit G-2. Secondary Pb Smelter: Current Conditions Scenario Media Concentrations

011099890003142 598996.19 3516571.87 2296 50 2 0.00893 0.00355 0.00397 0.003564 3.24 18011099890003146 599021.84 3516500.56 2343 17 0 0.00888 0.00353 0.00394 0.003562 3.24 18011099891003007 598942.14 3517448.13 2139 77 2 0.00885 0.00358 0.00400 0.002786 2.54 17011099891002016 598284.79 3519219.58 2441 42 4 0.00884 0.00357 0.00399 0.002544 2.32 17011099890003143 599004.75 3516666.69 2277 45 1 0.00882 0.00351 0.00392 0.003444 3.13 18011099891002005 597566.01 3519507.02 2357 2 0 0.00876 0.00354 0.00395 0.002804 2.60 17011099890001033 597095.25 3519780.71 2522 6 0 0.00873 0.00347 0.00388 0.002630 2.44 17011099891003029 599049.83 3517170.01 2242 6 0 0.00852 0.00344 0.00385 0.002730 2.48 17011099891004068 599144.26 3516839.35 2375 51 9 0.00847 0.00342 0.00382 0.002952 2.69 17011099890002000 597462.88 3519582.63 2398 3 0 0.00845 0.00336 0.00376 0.002676 2.48 17011099890001028 596883.04 3519925.85 2652 31 0 0.00843 0.00336 0.00375 0.002566 2.34 17011099890001029 596627.46 3519924.45 2656 44 10 0.00841 0.00335 0.00374 0.002434 2.22 17011099891001008 598865.31 3518904.66 2623 31 0 0.00821 0.00332 0.00371 0.002104 1.95 16011099889002041 597457.96 3519648.09 2460 4 0 0.00816 0.00325 0.00379 0.002540 2.35 17011099890003145 599120.34 3516551.90 2421 10 0 0.00814 0.00324 0.00362 0.003180 2.89 17011099891002001 598350.5 3519368.36 2599 191 32 0.00808 0.00327 0.00365 0.002276 2.42 17011099890003144 599126.46 3516631.58 2404 46 3 0.00808 0.00322 0.00359 0.003098 2.82 17011099890001023 596190.71 3519695.62 2499 228 16 0.00802 0.00319 0.00356 0.002114 2.25 17011099890001032 597135.18 3519927.22 2672 34 3 0.00800 0.00318 0.00355 0.002334 2.12 17011099889002040 597522.37 3519661.80 2491 9 0 0.00799 0.00318 0.00371 0.002514 2.33 17011099889002025 598257.30 3519665.77 2795 33 0 0.00786 0.00313 0.00365 0.002134 1.94 16011099891004060 599246.44 3517045.93 2447 20 3 0.00781 0.00316 0.00353 0.002472 2.03 17011099890001030 597061.90 3520032.35 2769 9 0 0.00777 0.00309 0.00345 0.002264 2.06 17011099889002029 597704.27 3519719.96 2603 11 2 0.00760 0.00303 0.00353 0.002306 2.10 17011099891003002 599135.54 3518103.04 2469 11 0 0.00748 0.00302 0.00338 0.001962 1.79 16011099889002026 598004.48 3519734.91 2735 74 15 0.00747 0.00298 0.00347 0.002104 1.91 16011099891003001 599132.82 3518206.82 2503 26 3 0.00747 0.00302 0.00337 0.001942 1.77 16011099889002024 598294.82 3519792.10 2922 12 0 0.00743 0.00296 0.00345 0.001974 1.80 16011099890001031 597209.03 3520034.74 2788 14 1 0.00738 0.00294 0.00328 0.002090 1.94 16011099890003107 593330.77 3516868.67 3503 61 5 0.00736 0.00293 0.00327 0.002068 1.64 16011099890001024 596128.51 3519812.95 2628 8 3 0.00731 0.00291 0.00325 0.001896 1.73 16011099889002032 597653.20 3519841.42 2701 23 0 0.00715 0.00285 0.00332 0.002176 1.98 16

ICF International G-6 
Block FIPS UTMx UTMy

Distance 

from 

Source 

(m)

Pop 

2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb 

Air Conc. 

(μg/m3)

Modeled 

Average 

Annual Pb 

Air Exposure 

Conc. for 

Population 

(μg/m3)

Children Ages 0 to 

4 Years Modeled 

Average Annual 

Pb Air Exposure 

Conc. (μg/m3)

Total 

Deposition 

(g/m2/year)

Modeled 

Soil Pb 

Conc. 

(mg/kg)

Model

Pb C

Pl

Backg

(mg

[From 

AERMOD 

modeling]

[From NATA 

ratios]

[For children ages 

0 to 4 years, from 

NATA ratios]

[From 

AERMOD 

modeling]

[From 

MPE soil 

mixing]

[From 

soil m

[From 2000 

U.S. Census]

[Centroid coordinates in 

NAD83]

Exhibit G-2. Secondary Pb Smelter: Current Conditions Scenario Media Concentrations

011099891001016 599135.79 3518344.92 2560 16 1 0.00710 0.00287 0.00320 0.001866 1.70 16011099889002023 598381.30 3519837.27 3006 39 7 0.00704 0.00281 0.00327 0.001852 1.69 16011099890001015 597064.02 3520263.15 2999 88 8 0.00695 0.00276 0.00309 0.001960 2.08 17011099891004050 599353.15 3517762.49 2589 48 7 0.00692 0.00280 0.00312 0.001896 1.73 16011099891004062 599480.43 3516794.22 2713 3 0 0.00689 0.00279 0.00311 0.002274 2.07 17011099889002022 598252.84 3519951.94 3041 40 1 0.00687 0.00274 0.00319 0.001816 1.93 16011099889002044 598500.90 3519660.04 2924 79 0 0.00685 0.00273 0.00318 0.001842 1.68 16011099890003048 597275.95 3515045.82 2277 527 55 0.00680 0.00271 0.00302 0.002880 2.62 17011099891004047 599350.24 3517885.41 2613 47 6 0.00675 0.00273 0.00305 0.001788 1.63 16011099889002030 597752.93 3519943.15 2830 64 5 0.00672 0.00268 0.00312 0.001984 2.11 17011099889002009 597367.58 3520104.77 2884 4 0 0.00660 0.00263 0.00307 0.001850 1.71 16011099890001016 596613.16 3520439.30 3170 19 0 0.00655 0.00261 0.00291 0.001780 1.62 16011099891001002 599225.35 3519054.26 3000 312 0 0.00653 0.00264 0.00295 0.001578 1.44 16011099889002011 597548.07 3520037.95 2860 8 3 0.00653 0.00260 0.00303 0.001906 2.03 17011099889002021 598047.13 3519955.02 2952 29 5 0.00649 0.00259 0.00302 0.001780 1.89 16011099890001022 595977.48 3519858.91 2715 10 0 0.00649 0.00258 0.00289 0.001722 1.57 16011099891004046 599354.28 3518002.36 2646 35 2 0.00648 0.00262 0.00293 0.001680 1.53 16011099891004042 599367.76 3518211.1 2724 28 0 0.00647 0.00261 0.00292 0.001626 1.48 16011099891004043 599349.93 3518096.04 2669 31 1 0.00646 0.00261 0.00292 0.001650 1.50 16011099890003081 598224.73 3515230.17 2487 3 0 0.00642 0.00256 0.00285 0.002980 2.71 17011099891004035 599366.18 3518374.35 2783 21 0 0.00635 0.00257 0.00287 0.001590 1.45 16011099890001011 596613.05 3520542.09 3273 46 3 0.00628 0.00250 0.00279 0.001684 1.53 16011099890001014 597122.15 3520486.42 3227 10 0 0.00624 0.00248 0.00277 0.001690 1.54 16011099890003106 594383.20 3516250.42 2634 1 0 0.00621 0.00247 0.00276 0.001974 1.67 16011099889001010 598557.37 3519963.93 3207 86 6 0.00620 0.00247 0.00288 0.001592 1.34 16011099889002031 597709.75 3520139.26 3002 15 1 0.00612 0.00244 0.00284 0.001792 1.91 16011099890001012 597089.72 3520549.61 3287 57 5 0.00611 0.00243 0.00271 0.001656 1.51 16011099891004059 599564.47 3517184.04 2756 89 6 0.00604 0.00244 0.00273 0.001776 1.62 16011099890001021 595848.74 3519913.14 2808 20 0 0.00604 0.00240 0.00268 0.001594 1.45 16011099891004051 599517.48 3517414.37 2711 31 4 0.00603 0.00244 0.00272 0.001744 1.43 16011099891004034 599377.94 3518493.38 2842 32 1 0.00601 0.00243 0.00271 0.001522 1.39 16011099889002018 598262.01 3520163.67 3233 5 0 0.00600 0.00239 0.00279 0.001566 1.67 16

ICF International G-7 
Block FIPS UTMx UTMy

Distance 

from 

Source 

(m)

Pop 

2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb 

Air Conc. 

(μg/m3)

Modeled 

Average 

Annual Pb 

Air Exposure 

Conc. for 

Population 

(μg/m3)

Children Ages 0 to 

4 Years Modeled 

Average Annual 

Pb Air Exposure 

Conc. (μg/m3)

Total 

Deposition 

(g/m2/year)

Modeled 

Soil Pb 

Conc. 

(mg/kg)

Model

Pb C

Pl

Backg

(mg

[From 

AERMOD 

modeling]

[From NATA 

ratios]

[For children ages 

0 to 4 years, from 

NATA ratios]

[From 

AERMOD 

modeling]

[From 

MPE soil 

mixing]

[From 

soil m

[From 2000 

U.S. Census]

[Centroid coordinates in 

NAD83]

Exhibit G-2. Secondary Pb Smelter: Current Conditions Scenario Media Concentrations

011099890001006 596615.34 3520665.07 3396 33 5 0.00598 0.00238 0.00266 0.001584 1.44 16011099891004049 599613.03 3517770.04 2846 32 6 0.00596 0.00241 0.00269 0.001592 1.45 16011099890001007 596852.79 3520671.33 3397 22 0 0.00594 0.00236 0.00264 0.001632 1.49 16011099891004048 599605.81 3517893.93 2863 27 2 0.00593 0.00240 0.00268 0.001536 1.40 16011099891004041 599583.29 3517640.76 2797 126 9 0.00589 0.00238 0.00266 0.001640 1.35 16011099891004052 599577.42 3517268.82 2767 29 2 0.00588 0.00238 0.00265 0.001706 1.55 16011099890003035 592970.38 3518647.16 4077 6 0 0.00587 0.00234 0.00261 0.001386 1.45 16011099890003077 598131.63 3514970.28 2657 10 1 0.00584 0.00232 0.00260 0.002578 2.35 17011099890001018 595963.05 3520113.74 2962 17 1 0.00582 0.00232 0.00259 0.001478 1.35 16011099890003080 599785.06 3516094.74 3201 480 18 0.00582 0.00232 0.00259 0.002084 1.65 16011099890001008 597014.49 3520678.90 3410 16 2 0.00582 0.00232 0.00258 0.001578 1.44 16011099889002008 597464.37 3520333.45 3128 1 0 0.00579 0.00231 0.00269 0.001572 1.46 16011099889002012 597695.67 3520263.08 3117 33 2 0.00577 0.00230 0.00268 0.001658 1.76 16011099889002014 597842.18 3520240.29 3140 35 1 0.00577 0.00230 0.00268 0.001640 1.74 16011099889001011 598606.99 3520263.72 3487 122 20 0.00573 0.00229 0.00266 0.001412 1.50 16011099891004045 599596.11 3518006.71 2881 23 2 0.00573 0.00232 0.00259 0.001446 1.32 16011099890001020 595850.13 3520041.14 2928 17 1 0.00569 0.00227 0.00253 0.001482 1.35 16011099889002019 598078.37 3520199.20 3187 18 1 0.00569 0.00227 0.00264 0.001516 1.61 16011099889002015 597936.83 3520241.19 3173 48 8 0.00568 0.00226 0.00264 0.001572 1.67 16011099890003036 594040.37 3519476.20 3538 37 2 0.00565 0.00225 0.00251 0.001226 1.12 16011099890003109 594584.92 3516126.30 2504 4 1 0.00563 0.00224 0.00250 0.001798 1.93 16011099890001009 597197.78 3520679.62 3427 31 8 0.00563 0.00224 0.00250 0.001476 1.34 16011099889001009 598817.78 3519911.00 3314 39 2 0.00562 0.00224 0.00261 0.001410 1.04 16011099890003078 598274.46 3514980.72 2722 19 2 0.00562 0.00224 0.00250 0.002498 2.27 17011099891004044 599587.38 3518108.41 2900 5 0 0.00562 0.00227 0.00254 0.001390 1.27 16011099889002017 598225.40 3520302.39 3342 8 2 0.00545 0.00217 0.00253 0.001410 1.50 16011099889002013 597757.28 3520390.65 3256 3 0 0.00544 0.00217 0.00253 0.001538 1.64 16011099889002020 598078.26 3520300.99 3281 32 1 0.00543 0.00216 0.00252 0.001436 1.53 16011099890001010 597197.61 3520788.46 3535 30 1 0.00542 0.00216 0.00241 0.001400 1.27 16011099891004033 599702.96 3518439.08 3118 34 2 0.00540 0.00218 0.00244 0.001274 1.16 16011099890003058 598260.10 3514861.66 2815 16 1 0.00538 0.00214 0.00239 0.002330 2.12 17011099891004036 599696.59 3518296.92 3062 45 8 0.00536 0.00216 0.00242 0.001282 1.17 16

ICF International G-8 
Block FIPS UTMx UTMy

Distance 

from 

Source 

(m)

Pop 

2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb 

Air Conc. 

(μg/m3)

Modeled 

Average 

Annual Pb 

Air Exposure 

Conc. for 

Population 

(μg/m3)

Children Ages 0 to 

4 Years Modeled 

Average Annual 

Pb Air Exposure 

Conc. (μg/m3)

Total 

Deposition 

(g/m2/year)

Modeled 

Soil Pb 

Conc. 

(mg/kg)

Model

Pb C

Pl

Backg

(mg

[From 

AERMOD 

modeling]

[From NATA 

ratios]

[For children ages 

0 to 4 years, from 

NATA ratios]

[From 

AERMOD 

modeling]

[From 

MPE soil 

mixing]

[From 

soil m

[From 2000 

U.S. Census]

[Centroid coordinates in 

NAD83]

Exhibit G-2. Secondary Pb Smelter: Current Conditions Scenario Media Concentrations

011099890001013 597385.70 3520645.12 3419 53 2 0.00533 0.00212 0.00237 0.001364 1.24 16011099889001007 598693.90 3520443.94 3687 138 32 0.00532 0.00212 0.00247 0.001274 1.36 16011099890003059 598247.49 3514829.29 2837 6 0 0.00532 0.00212 0.00236 0.002288 2.08 17011099889002004 597749.70 3520464.15 3325 2 0 0.00528 0.00211 0.00245 0.001470 1.56 16011099889002007 597586.65 3520506.94 3324 17 1 0.00525 0.00209 0.00244 0.001410 1.50 16011099889002003 597843.53 3520460.00 3348 13 0 0.00525 0.00209 0.00244 0.001466 1.56 16011099889002002 597936.43 3520463.91 3382 9 0 0.00518 0.00207 0.00241 0.001424 1.51 16011099889002016 598121.19 3520401.17 3390 32 2 0.00517 0.00206 0.00240 0.001346 1.43 16011099890003079 598848.60 3514996.29 3058 30 5 0.00513 0.00204 0.00228 0.002166 1.78 16011099890003056 598131.34 3514730.43 2867 21 2 0.00503 0.00200 0.00223 0.002110 1.92 16011099890001002 596175.22 3520800.01 3582 370 26 0.00502 0.00200 0.00223 0.001138 1.21 16011099889002006 597632.14 3520610.17 3435 21 4 0.00501 0.00200 0.00233 0.001332 1.21 16011099889003050 597533.52 3520664.66 3466 30 0 0.00499 0.00199 0.00232 0.001292 1.18 16011099890003060 598295.14 3514708.81 2965 22 4 0.00498 0.00198 0.00221 0.002096 1.91 16011099891004040 599963.79 3517992.13 3234 11 0 0.00494 0.00200 0.00223 0.001214 1.10 16011099890003055 597902.92 3514756.47 2745 20 4 0.00492 0.00196 0.00219 0.002008 1.65 16011099889001005 598110.45 3520535.10 3510 61 8 0.00491 0.00196 0.00228 0.001276 1.36 16011099889002001 597892.80 3520617.69 3514 29 2 0.00490 0.00195 0.00228 0.001340 1.43 16011099890003037 594081.71 3519661.00 3624 42 7 0.00482 0.00192 0.00214 0.001078 1.00 16011099889001015 599751.71 3519624.72 3765 16 0 0.00481 0.00192 0.00224 0.001056 0.89 15011099889003048 597541.16 3520766.52 3567 4 0 0.00480 0.00191 0.00223 0.001224 1.30 16011099890001000 597097.55 3521178.54 3914 90 13 0.00479 0.00191 0.00213 0.001208 1.10 16011099890003026 594907.94 3519747.20 3119 12 0 0.00472 0.00188 0.00210 0.001174 1.07 16011099889002000 597803.81 3520745.84 3610 73 7 0.00469 0.00187 0.00218 0.001258 1.14 16011099890001019 595621.60 3520370.57 3316 33 1 0.00469 0.00187 0.00209 0.001160 1.18 16011099890003054 597901.91 3514680.88 2815 10 1 0.00468 0.00186 0.00208 0.001874 1.54 16011099891004057 600129.25 3517883.89 3375 65 4 0.00465 0.00188 0.00210 0.001154 1.05 16011099889001004 598472.90 3520696.79 3804 342 60 0.00464 0.00185 0.00216 0.001134 1.21 16011099890003053 597797.77 3514676.87 2780 14 2 0.00460 0.00183 0.00204 0.001828 1.50 16011099890003024 595096.85 3519978.72 3201 20 0 0.00460 0.00183 0.00204 0.001074 0.98 15011099890001037 595839.10 3520670.90 3532 7 0 0.00455 0.00181 0.00202 0.001066 1.13 16011099891004058 600131.15 3517777.08 3359 66 6 0.00453 0.00183 0.00205 0.001152 1.23 16

ICF International G-9 
Block FIPS UTMx UTMy

Distance 

from 

Source 

(m)

Pop 

2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb 

Air Conc. 

(μg/m3)

Modeled 

Average 

Annual Pb 

Air Exposure 

Conc. for 

Population 

(μg/m3)

Children Ages 0 to 

4 Years Modeled 

Average Annual 

Pb Air Exposure 

Conc. (μg/m3)

Total 

Deposition 

(g/m2/year)

Modeled 

Soil Pb 

Conc. 

(mg/kg)

Model

Pb C

Pl

Backg

(mg

[From 

AERMOD 

modeling]

[From NATA 

ratios]

[For children ages 

0 to 4 years, from 

NATA ratios]

[From 

AERMOD 

modeling]

[From 

MPE soil 

mixing]

[From 

soil m

[From 2000 

U.S. Census]

[Centroid coordinates in 

NAD83]

Exhibit G-2. Secondary Pb Smelter: Current Conditions Scenario Media Concentrations

011099890001001 596827.83 3521402.75 4128 15 1 0.00453 0.00180 0.00201 0.001144 1.04 16011099891004031 599923.8 3518742.55 3442 166 16 0.00451 0.00182 0.00204 0.001058 1.13 16011099891004039 600206.51 3517993.48 3472 30 2 0.00449 0.00182 0.00203 0.001084 0.99 15011099891004038 600169.3 3518101.96 3460 36 1 0.00442 0.00179 0.00200 0.001042 0.95 15011099891004037 600087.47 3518196.91 3405 54 6 0.00440 0.00178 0.00199 0.001026 0.93 15011099890003099 596453.64 3513948.68 3345 1 0 0.00435 0.00173 0.00193 0.001306 1.21 16011099890003114 594675.75 3515611.15 2706 156 8 0.00434 0.00173 0.00193 0.001284 1.06 16011099889001012 599607.51 3520029.47 3926 49 3 0.00430 0.00171 0.00200 0.000950 0.86 15011099889001013 599759.86 3520026.91 4034 42 5 0.00428 0.00171 0.00199 0.000930 0.85 15011099890003064 597995.63 3514514.48 3004 19 1 0.00428 0.00170 0.00190 0.001668 1.52 16011099890003065 597934.51 3514512.89 2982 21 3 0.00424 0.00169 0.00188 0.001638 1.35 16011099889003042 597820.14 3521019.10 3878 26 3 0.00423 0.00169 0.00197 0.001084 1.15 16011099890003073 597434.52 3514210.86 3127 10 2 0.00422 0.00168 0.00187 0.001558 1.64 16011099890003068 597548.63 3514344.96 3022 57 10 0.00421 0.00168 0.00187 0.001604 1.69 16011099890001003 595948.23 3521241.32 4059 19 2 0.00419 0.00167 0.00186 0.000880 0.80 15011099890001005 596551.88 3521650.09 4383 3 1 0.00419 0.00167 0.00186 0.000996 1.06 16011099889003043 597452.36 3521329.04 4105 176 22 0.00417 0.00166 0.00194 0.000980 1.00 16011099889003044 596891.98 3521626.08 4352 12 3 0.00417 0.00166 0.00194 0.001028 0.94 15011099890003072 597362.79 3514146.69 3177 28 1 0.00416 0.00166 0.00185 0.001522 1.60 16011099890003061 598269.80 3514386.08 3237 101 16 0.00413 0.00165 0.00184 0.001634 1.74 16011099890003069 597548.51 3514266.35 3098 27 2 0.00409 0.00163 0.00182 0.001536 1.62 16011099890003052 597799.70 3514473.31 2971 21 1 0.00407 0.00162 0.00181 0.001564 1.29 16011099889003041 598032.51 3521127.95 4042 37 7 0.00402 0.00160 0.00187 0.001042 1.11 16011099890003030 591974.96 3519759.86 5436 14 0 0.00398 0.00158 0.00177 0.000792 0.85 15011099890003066 597746.84 3514418.39 3006 3 1 0.00397 0.00158 0.00176 0.001526 1.25 16011099890003128 590548.11 3517022.20 6267 54 6 0.00396 0.00158 0.00176 0.000808 0.86 15011099889001002 599394.18 3520643.17 4245 85 4 0.00394 0.00157 0.00183 0.000880 0.92 15011099890003063 598066.89 3514354.92 3179 20 0 0.00394 0.00157 0.00175 0.001496 1.23 16011099891004054 600376.41 3517606.13 3582 50 5 0.00394 0.00159 0.00178 0.001012 0.83 15011099889001014 599802.78 3520215.79 4196 33 3 0.00391 0.00156 0.00182 0.000840 0.89 15011099890003120 596387.43 3513662.86 3637 13 0 0.00387 0.00154 0.00172 0.001106 1.19 16011099890003071 597586.60 3514153.84 3216 31 4 0.00386 0.00154 0.00171 0.001428 1.50 16

ICF International G-10 
Block FIPS UTMx UTMy

Distance 

from 

Source 

(m)

Pop 

2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb 

Air Conc. 

(μg/m3)

Modeled 

Average 

Annual Pb 

Air Exposure 

Conc. for 

Population 

(μg/m3)

Children Ages 0 to 

4 Years Modeled 

Average Annual 

Pb Air Exposure 

Conc. (μg/m3)

Total 

Deposition 

(g/m2/year)

Modeled 

Soil Pb 

Conc. 

(mg/kg)

Model

Pb C

Pl

Backg

(mg

[From 

AERMOD 

modeling]

[From NATA 

ratios]

[For children ages 

0 to 4 years, from 

NATA ratios]

[From 

AERMOD 

modeling]

[From 

MPE soil 

mixing]

[From 

soil m

[From 2000 

U.S. Census]

[Centroid coordinates in 

NAD83]

Exhibit G-2. Secondary Pb Smelter: Current Conditions Scenario Media Concentrations

011099890003067 597755.22 3514351.96 3072 13 1 0.00384 0.00153 0.00171 0.001456 1.20 16011099889003051 597768.33 3521309.86 4147 69 19 0.00383 0.00152 0.00178 0.000928 0.99 15011099890003032 591555.58 3519210.92 5600 11 0 0.00377 0.00150 0.00168 0.000770 0.70 15011099891004056 600599.16 3517890.49 3839 43 2 0.00377 0.00152 0.00170 0.000902 0.82 15011099890003070 597766.93 3514296.64 3128 25 3 0.00374 0.00149 0.00166 0.001410 1.16 16011099890003155 599440.44 3514426.53 3877 51 5 0.00371 0.00148 0.00165 0.001400 1.15 16011099889004015 599208.10 3521467.77 4830 39 3 0.00370 0.00147 0.00172 0.000784 0.66 15011099890003028 593636.77 3520134.63 4272 12 0 0.00368 0.00147 0.00164 0.000790 0.80 15011099890003076 598154.44 3514202.57 3354 10 1 0.00367 0.00146 0.00163 0.001364 1.44 16011099891004055 600603.67 3517781.69 3827 46 4 0.00365 0.00148 0.00165 0.000892 0.81 15011099890003031 591523.93 3519382.97 5691 4 2 0.00362 0.00144 0.00161 0.000748 0.80 15011099890003153 600771.69 3516004.57 4160 2 0 0.00362 0.00144 0.00161 0.001150 0.91 15011099890003075 598078.75 3514193.79 3332 5 0 0.00361 0.00144 0.00161 0.001328 1.09 16011099890003074 598008.17 3514191.10 3308 6 0 0.00357 0.00142 0.00159 0.001302 1.07 16011099890003051 597834.09 3514206.58 3235 68 9 0.00355 0.00141 0.00158 0.001312 1.11 16011099890003050 597839.77 3514152.21 3288 24 2 0.00347 0.00138 0.00154 0.001274 1.08 16011099890003152 601158.72 3515429.88 4724 8 1 0.00339 0.00135 0.00151 0.001046 0.95 15011099889003052 596271.22 3522126.16 4881 5 0 0.00333 0.00133 0.00155 0.000708 0.75 15011099889003028 598544.06 3521622.63 4681 17 1 0.00328 0.00131 0.00152 0.000738 0.78 15011099890003049 597910.77 3514020.87 3435 40 2 0.00325 0.00129 0.00145 0.001170 1.24 16011099890003159 601002.16 3514537.46 5007 21 1 0.00324 0.00129 0.00144 0.001098 0.87 15011099889004011 599215.10 3521901.19 5214 10 0 0.00321 0.00128 0.00149 0.000676 0.72 15011099890003014 594505.54 3520739.19 4161 5 1 0.00321 0.00128 0.00143 0.000676 0.72 15011099889003027 598289.12 3521828.81 4788 43 4 0.00319 0.00127 0.00148 0.000764 0.81 15011099890003023 593525.60 3520530.69 4625 8 0 0.00309 0.00123 0.00137 0.000658 0.70 15011099891004030 601094.08 3517453.92 4288 8 2 0.00306 0.00124 0.00138 0.000728 0.60 15011099889004020 600889.23 3520173.98 5004 12 0 0.00305 0.00122 0.00142 0.000598 0.64 15011099889004014 599897.40 3521371.65 5130 59 2 0.00303 0.00121 0.00141 0.000626 0.65 15011099890003115 594220.40 3515036.57 3423 54 6 0.00300 0.00120 0.00133 0.000802 0.73 15011099889004016 600901.85 3520466.37 5189 15 4 0.00300 0.00119 0.00139 0.000582 0.62 15011099891004072 600815.89 3519314.62 4495 16 2 0.00299 0.00121 0.00135 0.000642 0.54 15011099889003012 596781.67 3522924.08 5649 231 20 0.00296 0.00118 0.00138 0.000650 0.69 15

ICF International G-11 
Block FIPS UTMx UTMy

Distance 

from 

Source 

(m)

Pop 

2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb 

Air Conc. 

(μg/m3)

Modeled 

Average 

Annual Pb 

Air Exposure 

Conc. for 

Population 

(μg/m3)

Children Ages 0 to 

4 Years Modeled 

Average Annual 

Pb Air Exposure 

Conc. (μg/m3)

Total 

Deposition 

(g/m2/year)

Modeled 

Soil Pb 

Conc. 

(mg/kg)

Model

Pb C

Pl

Backg

(mg

[From 

AERMOD 

modeling]

[From NATA 

ratios]

[For children ages 

0 to 4 years, from 

NATA ratios]

[From 

AERMOD 

modeling]

[From 

MPE soil 

mixing]

[From 

soil m

[From 2000 

U.S. Census]

[Centroid coordinates in 

NAD83]

Exhibit G-2. Secondary Pb Smelter: Current Conditions Scenario Media Concentrations

011099890003158 599502.14 3513922.22 4300 9 0 0.00296 0.00118 0.00131 0.001042 0.88 15011099890003018 591700.64 3520798.45 6206 3 0 0.00294 0.00117 0.00131 0.000550 0.57 15011099889001001 600634.69 3520945.48 5301 56 1 0.00288 0.00115 0.00134 0.000560 0.60 15011099889004018 601131.95 3520782.06 5566 4 0 0.00279 0.00111 0.00130 0.000520 0.54 15011099890003127 592817.61 3515448.12 4391 5 2 0.00278 0.00111 0.00124 0.000688 0.74 15011099890003160 601034.95 3513827.28 5453 14 2 0.00272 0.00108 0.00121 0.000882 0.95 15011099890003110 593536.56 3515345.78 3800 44 2 0.00270 0.00108 0.00120 0.000700 0.64 15011099889003026 598847.13 3522317.90 5439 401 70 0.00267 0.00107 0.00124 0.000556 0.59 15011099889004021 601182.78 3519639.71 4971 9 1 0.00261 0.00104 0.00121 0.000536 0.57 15011099890003020 592988.17 3520963.19 5311 30 4 0.00260 0.00103 0.00115 0.000526 0.54 15011099890003121 597784.29 3513011.88 4373 142 17 0.00259 0.00103 0.00115 0.000822 0.87 15011099890003125 595335.89 3512466.93 5029 6 0 0.00258 0.00103 0.00114 0.000528 0.42 15011099890003007 595316.53 3522274.48 5218 47 5 0.00253 0.00101 0.00112 0.000520 0.48 15011099890003005 595428.24 3522660.49 5560 13 0 0.00252 0.00100 0.00112 0.000472 0.44 15011099891004079 602009.57 3515583.4 5468 2 0 0.00252 0.00102 0.00114 0.000702 0.56 15011099889004022 601358.04 3519845.01 5224 19 5 0.00251 0.00100 0.00117 0.000494 0.45 15011099890003122 598088.44 3513356.41 4122 19 2 0.00250 0.00100 0.00111 0.000822 0.68 15011099889004017 601577.75 3520342.01 5669 30 4 0.00248 0.00099 0.00115 0.000456 0.49 15011099890003113 593356.57 3515066.00 4099 8 0 0.00244 0.00097 0.00108 0.000604 0.65 15011099890003123 598110.10 3513252.81 4227 14 1 0.00242 0.00096 0.00107 0.000786 0.65 15011099889003013 595422.76 3523064.56 5953 15 3 0.00239 0.00095 0.00111 0.000428 0.44 15011099889003023 599606.09 3522929.91 6308 60 7 0.00238 0.00095 0.00111 0.000468 0.49 15011099890003006 595294.12 3522650.17 5585 5 2 0.00236 0.00094 0.00105 0.000460 0.49 15011099890003112 593068.16 3515254.87 4252 2 1 0.00234 0.00093 0.00104 0.000594 0.54 15011099892001067 594615.81 3512103.55 5618 3 0 0.00233 0.00106 0.00104 0.000436 0.35 15011099892001034 592481.4 3515209.27 4796 5 0 0.00233 0.00106 0.00104 0.000554 0.60 15011099891004076 602273.84 3516021.39 5606 6 0 0.00232 0.00094 0.00105 0.000596 0.62 15011099890003004 595286.26 3522754.91 5688 78 6 0.00232 0.00092 0.00103 0.000446 0.45 15011099890003124 597523.00 3512411.79 4915 19 0 0.00227 0.00091 0.00101 0.000674 0.53 15011099892001030 593376.94 3514718.5 4280 9 0 0.00226 0.00103 0.00101 0.000550 0.50 15011099889004009 600900.61 3522083.89 6313 23 0 0.00224 0.00089 0.00104 0.000400 0.42 15011099889003015 598187.59 3523268.99 6150 5 0 0.00224 0.00089 0.00104 0.000450 0.46 15

ICF International G-12 
Block FIPS UTMx UTMy

Distance 

from 

Source 

(m)

Pop 

2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb 

Air Conc. 

(μg/m3)

Modeled 

Average 

Annual Pb 

Air Exposure 

Conc. for 

Population 

(μg/m3)

Children Ages 0 to 

4 Years Modeled 

Average Annual 

Pb Air Exposure 

Conc. (μg/m3)

Total 

Deposition 

(g/m2/year)

Modeled 

Soil Pb 

Conc. 

(mg/kg)

Model

Pb C

Pl

Backg

(mg

[From 

AERMOD 

modeling]

[From NATA 

ratios]

[For children ages 

0 to 4 years, from 

NATA ratios]

[From 

AERMOD 

modeling]

[From 

MPE soil 

mixing]

[From 

soil m

[From 2000 

U.S. Census]

[Centroid coordinates in 

NAD83]

Exhibit G-2. Secondary Pb Smelter: Current Conditions Scenario Media Concentrations

011099890003002 595125.85 3522704.04 5684 6 2 0.00222 0.00088 0.00099 0.000442 0.45 15011099890003015 593549.71 3521380.46 5243 18 2 0.00222 0.00088 0.00099 0.000448 0.33 15011099890003129 589718.49 3515518.42 7306 3 1 0.00219 0.00087 0.00098 0.000466 0.38 15011099890003003 595129.32 3522793.77 5769 4 1 0.00218 0.00087 0.00097 0.000428 0.44 15011099890003000 595204.93 3522990.99 5937 2 0 0.00217 0.00086 0.00097 0.000410 0.38 15011099890003021 592523.83 3521501.19 6019 6 0 0.00217 0.00086 0.00096 0.000418 0.35 15011099892001029 593402.33 3514577.65 4346 14 1 0.00214 0.00098 0.00096 0.000526 0.48 15011099892001031 593495.54 3514362.83 4412 43 1 0.00212 0.00097 0.00095 0.000510 0.46 15011099890003017 592241.24 3521638.73 6318 20 0 0.00207 0.00083 0.00092 0.000392 0.33 15011099892001033 592983.31 3514640.37 4646 2 0 0.00207 0.00095 0.00093 0.000486 0.40 15011099892001027 593693.6 3512844.91 5416 70 1 0.00207 0.00094 0.00092 0.000408 0.43 15011099891004025 603133.77 3516378.66 6387 72 11 0.00206 0.00083 0.00093 0.000456 0.48 15011099891004084 603065.37 3514524.62 6833 9 0 0.00205 0.00083 0.00093 0.000552 0.59 15011099890003001 594295.23 3522278.16 5600 20 1 0.00205 0.00082 0.00091 0.000402 0.30 15011099889003017 598509.41 3523711.47 6657 15 2 0.00205 0.00082 0.00095 0.000406 0.41 15011099892001028 593364.15 3514324.35 4537 30 3 0.00203 0.00093 0.00091 0.000482 0.44 15011099892001068 593885.84 3511308.8 6644 60 12 0.00202 0.00092 0.00090 0.000330 0.26 15011099891004028 602519.5 3517288.62 5710 24 5 0.00202 0.00081 0.00091 0.000428 0.39 15011099889003033 600814.82 3523022.32 7005 3 2 0.00201 0.00080 0.00093 0.000362 0.38 15011099889004005 602361.47 3522096.31 7353 3 0 0.00198 0.00079 0.00092 0.000324 0.34 15011099889004006 602392.21 3521688.46 7116 31 5 0.00197 0.00078 0.00091 0.000332 0.35 15011099889003025 599205.26 3523811.89 6962 4 0 0.00196 0.00078 0.00091 0.000376 0.32 15011099891004082 603140.99 3515227.82 6654 1 0 0.00195 0.00079 0.00088 0.000504 0.54 15011099889004023 602604.78 3519873.49 6351 7 2 0.00194 0.00077 0.00090 0.000350 0.37 15011099889003016 598228.24 3524056.47 6928 16 1 0.00193 0.00077 0.00090 0.000358 0.27 15011099890003016 592239.68 3521907.79 6508 5 0 0.00193 0.00077 0.00086 0.000366 0.37 15011099891004024 603521.47 3516520.62 6754 14 1 0.00190 0.00077 0.00086 0.000400 0.34 15011099889003018 598959.09 3524093.72 7149 5 0 0.00189 0.00075 0.00088 0.000376 0.38 15011099890003161 600827.28 3512521.16 6224 17 0 0.00186 0.00074 0.00083 0.000538 0.58 15011099891004089 602765.22 3512674.33 7525 66 3 0.00184 0.00075 0.00083 0.000506 0.54 15011099891004081 603641.73 3514835.77 7254 21 1 0.00184 0.00074 0.00083 0.000448 0.48 15011099891004083 603479.96 3515082.06 7021 2 0 0.00183 0.00074 0.00083 0.000452 0.41 15

ICF International G-13 
Block FIPS UTMx UTMy

Distance 

from 

Source 

(m)

Pop 

2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb 

Air Conc. 

(μg/m3)

Modeled 

Average 

Annual Pb 

Air Exposure 

Conc. for 

Population 

(μg/m3)

Children Ages 0 to 

4 Years Modeled 

Average Annual 

Pb Air Exposure 

Conc. (μg/m3)

Total 

Deposition 

(g/m2/year)

Modeled 

Soil Pb 

Conc. 

(mg/kg)

Model

Pb C

Pl

Backg

(mg

[From 

AERMOD 

modeling]

[From NATA 

ratios]

[For children ages 

0 to 4 years, from 

NATA ratios]

[From 

AERMOD 

modeling]

[From 

MPE soil 

mixing]

[From 

soil m

[From 2000 

U.S. Census]

[Centroid coordinates in 

NAD83]

Exhibit G-2. Secondary Pb Smelter: Current Conditions Scenario Media Concentrations

011099889003019 599996.99 3524136.02 7565 5 0 0.00179 0.00071 0.00083 0.000320 0.34 15011099889004007 601831.14 3522736.04 7419 13 0 0.00178 0.00071 0.00083 0.000292 0.30 15011099891004026 603130.38 3517233.25 6321 4 0 0.00176 0.00071 0.00080 0.000360 0.33 15011099889003011 598575.38 3524546.56 7483 3 0 0.00173 0.00069 0.00081 0.000324 0.33 15011099889004008 601879.84 3522944.14 7605 21 3 0.00173 0.00069 0.00080 0.000282 0.30 15011099891004027 603238.36 3517367.36 6429 2 0 0.00173 0.00070 0.00078 0.000346 0.31 15011099889003022 601583.62 3523492.48 7839 2 0 0.00173 0.00069 0.00080 0.000290 0.30 15011099891004092 604114.39 3514584.55 7784 80 17 0.00172 0.00069 0.00078 0.000400 0.42 15011099891004091 604101.4 3514677.14 7740 11 3 0.00169 0.00068 0.00076 0.000394 0.41 15011099891004019 603363 3517985.39 6591 78 6 0.00167 0.00067 0.00075 0.000338 0.36 15011099889003035 602011.85 3523339.50 7990 10 1 0.00164 0.00065 0.00076 0.000260 0.27 15011099891004018 603840.88 3516946.11 7039 47 3 0.00164 0.00066 0.00074 0.000318 0.27 15011099892001066 595173.9 3510514.39 6956 41 1 0.00160 0.00073 0.00071 0.000302 0.25 15011099889003020 600710.00 3525114.51 8756 7 1 0.00158 0.00063 0.00073 0.000266 0.27 15011099892001004 597256.63 3510063.17 7226 85 15 0.00157 0.00072 0.00070 0.000360 0.30 15011099889003010 598883.35 3525259.02 8249 5 1 0.00155 0.00062 0.00072 0.000272 0.28 15011099891004012 604921.7 3514196.67 8676 3 0 0.00153 0.00062 0.00069 0.000340 0.36 15011099891004013 604479.29 3514858.34 8041 27 5 0.00152 0.00062 0.00069 0.000358 0.37 15011099891004015 604852.88 3516474.63 8083 32 0 0.00150 0.00061 0.00068 0.000288 0.30 15011099891004014 604695.32 3515629.49 8055 196 21 0.00148 0.00060 0.00067 0.000314 0.33 15011099889003021 601879.48 3524628.19 8931 14 1 0.00147 0.00059 0.00068 0.000240 0.26 15011099892001001 599861.45 3511051.48 6931 105 15 0.00145 0.00066 0.00065 0.000390 0.33 15011099889004032 604198.68 3520462.96 8047 6 0 0.00143 0.00057 0.00066 0.000234 0.24 15011099891004011 605097.14 3513628.04 9054 50 3 0.00142 0.00057 0.00064 0.000338 0.31 15011099891004093 604778.89 3515030.69 8279 5 1 0.00140 0.00057 0.00063 0.000328 0.34 15011099891004094 604782.44 3515105.3 8262 12 0 0.00139 0.00056 0.00063 0.000328 0.34 15011099889004000 603633.78 3523742.73 9402 249 21 0.00139 0.00055 0.00065 0.000210 0.18 15011099892001036 589869.25 3514124.99 7622 38 2 0.00137 0.00062 0.00061 0.000258 0.19 15011099891004017 604596.53 3517472.78 7789 4 1 0.00135 0.00055 0.00061 0.000250 0.27 15011099892001002 598791.92 3510935.37 6642 36 2 0.00134 0.00061 0.00060 0.000348 0.29 15011099889003009 600393.94 3525944.88 9381 10 0 0.00132 0.00052 0.00061 0.000206 0.21 15011099892001003 598762.83 3510735.55 6825 2 0 0.00131 0.00060 0.00059 0.000340 0.29 15

ICF International G-14 
Block FIPS UTMx UTMy

Distance 

from 

Source 

(m)

Pop 

2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb 

Air Conc. 

(μg/m3)

Modeled 

Average 

Annual Pb 

Air Exposure 

Conc. for 

Population 

(μg/m3)

Children Ages 0 to 

4 Years Modeled 

Average Annual 

Pb Air Exposure 

Conc. (μg/m3)

Total 

Deposition 

(g/m2/year)

Modeled 

Soil Pb 

Conc. 

(mg/kg)

Model

Pb C

Pl

Backg

(mg

[From 

AERMOD 

modeling]

[From NATA 

ratios]

[For children ages 

0 to 4 years, from 

NATA ratios]

[From 

AERMOD 

modeling]

[From 

MPE soil 

mixing]

[From 

soil m

[From 2000 

U.S. Census]

[Centroid coordinates in 

NAD83]

Exhibit G-2. Secondary Pb Smelter: Current Conditions Scenario Media Concentrations

011099891004007 606020.86 3513570.98 9928 28 6 0.00131 0.00053 0.00059 0.000282 0.26 15011099892001000 601231.9 3510605.28 8002 5 1 0.00131 0.00060 0.00058 0.000336 0.35 15011099892001006 598350.78 3509775.23 7656 9 5 0.00130 0.00059 0.00058 0.000306 0.24 15011099892001008 597624.52 3509144.53 8171 20 3 0.00128 0.00058 0.00057 0.000286 0.27 15011099889003006 602271.27 3526919.83 11084 4 0 0.00126 0.00050 0.00059 0.000176 0.15 15011099891004095 605646.32 3515161.49 9086 9 1 0.00123 0.00050 0.00056 0.000258 0.27 15011099891004098 605057.7 3510819.88 10473 102 9 0.00122 0.00049 0.00055 0.000290 0.26 15011099891004096 605931.72 3515290.4 9335 45 8 0.00122 0.00049 0.00055 0.000244 0.26 15011099889003002 603606.01 3524619.26 10006 60 4 0.00121 0.00048 0.00056 0.000176 0.19 15011099892001007 598285.79 3509362.43 8049 19 5 0.00121 0.00055 0.00054 0.000280 0.24 15011099891004004 606001.17 3514480.83 9607 198 35 0.00121 0.00049 0.00054 0.000264 0.28 15011099891004010 606220.67 3511980.69 10798 23 2 0.00121 0.00049 0.00054 0.000294 0.27 15011099892001005 598944.82 3510260.61 7332 69 14 0.00120 0.00055 0.00054 0.000294 0.25 15011099891004008 606753.35 3513272.16 10719 1 0 0.00120 0.00048 0.00054 0.000250 0.23 15011099889003003 602763.42 3526038.87 10595 136 8 0.00119 0.00047 0.00055 0.000182 0.19 15011099889003005 602696.67 3526864.61 11252 2 0 0.00118 0.00047 0.00055 0.000160 0.14 15011099891004006 607033.48 3513082.57 11050 3 1 0.00115 0.00046 0.00052 0.000240 0.19 15011099891004005 607098.13 3513491.41 10962 6 1 0.00113 0.00046 0.00051 0.000230 0.21 15011099892001009 597644.18 3508067.4 9245 175 31 0.00112 0.00051 0.00050 0.000236 0.22 15011099891004003 607440.78 3513252.09 11366 25 3 0.00110 0.00045 0.00050 0.000216 0.18 15011099889003001 605529.50 3525201.21 11784 6 0 0.00109 0.00043 0.00050 0.000142 0.12 15011099892001026 593147.92 3508230.45 9758 118 12 0.00108 0.00049 0.00048 0.000162 0.17 15011099892001011 601425.91 3509094.49 9393 16 2 0.00107 0.00049 0.00048 0.000252 0.23 15011099892001010 599363.92 3509317.32 8357 98 12 0.00101 0.00046 0.00045 0.000226 0.19 15011099892001038 591623.69 3510966.99 8166 6 2 0.00101 0.00046 0.00045 0.000168 0.18 15011099892001037 590625.3 3512158.41 8027 121 20 0.00100 0.00046 0.00045 0.000180 0.15 15011099889003000 606421.83 3525999.55 12981 1 0 0.00096 0.00038 0.00045 0.000122 0.10 15011099891004001 607646.95 3514538.2 11177 3 0 0.00095 0.00038 0.00043 0.000186 0.15 15011099892001013 596874.96 3506579.74 10695 55 3 0.00095 0.00043 0.00042 0.000178 0.15 15011099891004000 608383.15 3513638.88 12131 13 1 0.00092 0.00037 0.00042 0.000176 0.16 15011099892001012 600307.01 3508365.01 9572 244 40 0.00089 0.00041 0.00040 0.000182 0.15 15011099892001014 598595.19 3506820.74 10606 10 0 0.00086 0.00039 0.00038 0.000170 0.16 15

ICF International G-15 
Block FIPS UTMx UTMy

Distance 

from 

Source 

(m)

Pop 

2000

Children 

Ages 0 

to 7 

Years 

2000

Modeled 

Average 

Annual Pb 

Air Conc. 

(μg/m3)

Modeled 

Average 

Annual Pb 

Air Exposure 

Conc. for 

Population 

(μg/m3)

Children Ages 0 to 

4 Years Modeled 

Average Annual 

Pb Air Exposure 

Conc. (μg/m3)

Total 

Deposition 

(g/m2/year)

Modeled 

Soil Pb 

Conc. 

(mg/kg)

Model

Pb C

Pl

Backg

(mg

[From 

AERMOD 

modeling]

[From NATA 

ratios]

[For children ages 

0 to 4 years, from 

NATA ratios]

[From 

AERMOD 

modeling]

[From 

MPE soil 

mixing]

[From 

soil m

[From 2000 

U.S. Census]

[Centroid coordinates in 

NAD83]

Exhibit G-2. Secondary Pb Smelter: Current Conditions Scenario Media Concentrations

011099892001042 591017.4 3506462 12267 40 2 0.00085 0.00039 0.00038 0.000098 0.10 15011099891004100 603343.55 3507723.76 11572 45 3 0.00081 0.00033 0.00037 0.000178 0.15 15011099892001039 590400.65 3509292.4 10237 142 17 0.00079 0.00036 0.00035 0.000120 0.10 15011099892001053 588438.07 3511127.65 10386 23 1 0.00076 0.00034 0.00034 0.000122 0.10 15011099892001047 590238.95 3505811.22 13214 15 3 0.00074 0.00034 0.00033 0.000084 0.09 15011099892001048 589974.13 3506336.98 12898 3 0 0.00073 0.00033 0.00032 0.000090 0.08 15011099892001046 591120.9 3504299.27 14168 1 0 0.00071 0.00032 0.00032 0.000090 0.08 15011099892001070 602579.05 3506011.96 12655 22 1 0.00070 0.00032 0.00031 0.000140 0.13 15011099892001049 589776.84 3506531.77 12841 7 0 0.00068 0.00031 0.00030 0.000088 0.07 15011099892001062 589731.19 3505039.91 14135 10 2 0.00068 0.00031 0.00030 0.000076 0.06 15011099892001045 591787.32 3504083.46 14115 3 0 0.00068 0.00031 0.00030 0.000082 0.09 15011099892001050 589105.38 3506456.43 13282 11 0 0.00067 0.00031 0.00030 0.000088 0.08 15011099892001052 588221.88 3509716.96 11440 25 1 0.00066 0.00030 0.00029 0.000102 0.08 15011099892001061 589416 3504614.93 14661 1 0 0.00065 0.00030 0.00029 0.000072 0.06 15011099892001059 588803.48 3503884.08 15602 41 2 0.00060 0.00028 0.00027 0.000066 0.06 15011099892001051 587247.79 3507863.51 13417 45 7 0.00055 0.00025 0.00025 0.000076 0.07 15011099892001055 584809.18 3508859 14658 6 0 0.00052 0.00024 0.00023 0.000070 0.08 15011099892001058 587500.15 3503800.42 16378 10 0 0.00052 0.00024 0.00023 0.000058 0.05 15011099892001057 587559.57 3505739.81 14786 23 0 0.00051 0.00023 0.00023 0.000062 0.06 15

ICF International G-16 
Appendix G

From Non-air 

Sources

From Air-related 

Sources Total

011099890003046 2 60 73 133

011099890002042 1 60 54 114

011099890003042 6 60 35 95

011099890002050 5 60 27 87

011099890002041 1 60 22 82

011099890003137 1 60 21 81

011099891003011 1 60 18 78

011099891003012 2 60 17 77

011099890002047 3 60 17 77

011099890003138 4 60 16 76

011099890002039 3 60 16 76

011099890002026 5 60 15 75

011099890002023 32 60 15 75

011099891003013 5 60 15 75

011099890002025 2 60 15 75

011099890002038 5 60 15 75

011099891003010 1 60 14 74

011099891003009 2 60 14 74

011099890002024 14 60 14 74

011099890002036 3 60 14 74

011099891003022 1 60 13 73

011099890002037 1 60 13 73

011099891003023 4 60 13 73

011099890003140 5 60 13 73

011099890002027 9 60 13 73

011099890003094 1 60 12 72

011099891002018 5 60 12 72

011099891003025 9 60 12 72

011099890002029 1 60 12 72

011099890002028 4 60 11 71

011099891002019 2 60 11 71

011099891003008 7 60 11 71

011099890002018 4 60 11 71

011099890002019 2 60 11 71

011099891003016 5 60 11 71

011099890003087 3 60 11 71

011099890003093 4 60 11 71

011099890002015 1 60 10 70

011099891002020 2 60 10 70

011099890002022 4 60 10 70

011099890003083 5 60 10 70

011099891002013 1 60 10 70

011099890003088 2 60 10 70

011099890003086 1 60 10 70

011099891003005 2 60 10 70

011099891002017 1 60 10 70

011099890001035 3 60 9 69

011099891001017 1 60 9 69

011099891002011 1 60 9 69

011099891003000 10 60 9 69

011099891002012 4 60 9 69

Current Conditions Scenario: Predicted Indoor Dust 

Concentrations (mg/kg)

Children 

Ages 0 to 7 

Years in 

2000

Block FIPS

Exhibit G-3. Secondary Pb Smelter: Modeled Indoor Dust Concentrations

ICF International G-17 DRAFT - December 2006
Appendix G

From Non-air 

Sources

From Air-related 

Sources Total

Current Conditions Scenario: Predicted Indoor Dust 

Concentrations (mg/kg)

Children 

Ages 0 to 7 

Years in 

2000

Block FIPS

Exhibit G-3. Secondary Pb Smelter: Modeled Indoor Dust Concentrations

011099890003089 6 60 9 69

011099891002007 1 60 9 69

011099891003004 3 60 9 69

011099891002014 8 60 9 69

011099890003082 3 60 8 68

011099890002017 4 60 8 68

011099891003006 6 60 8 68

011099890001026 7 60 8 68

011099890003085 4 60 8 68

011099891003028 3 60 8 68

011099890001025 2 60 8 68

011099891002002 3 60 8 68

011099891002015 8 60 8 68

011099891003003 1 60 8 68

011099890001027 4 60 8 68

011099890003040 36 60 8 68

011099891002003 5 60 8 68

011099890003142 2 60 8 68

011099891003007 2 60 7 67

011099891002016 4 60 7 67

011099890003143 1 60 7 67

011099891004068 9 60 7 67

011099890001029 10 60 7 67

011099891002001 32 60 7 67

011099890003144 3 60 7 67

011099890001023 16 60 7 67

011099890001032 3 60 7 67

011099891004060 3 60 7 67

011099889002029 2 60 6 66

011099889002026 15 60 6 66

011099891003001 3 60 6 66

011099890001031 1 60 6 66

011099890003107 5 60 6 66

011099890001024 3 60 6 66

011099891001016 1 60 6 66

011099889002023 7 60 6 66

011099890001015 8 60 6 66

011099891004050 7 60 6 66

011099889002022 1 60 6 66

011099890003048 55 60 6 66

011099891004047 6 60 6 66

011099889002030 5 60 6 66

011099889002011 3 60 6 66

011099889002021 5 60 5 65

011099891004046 2 60 5 65

011099891004043 1 60 5 65

011099890001011 3 60 5 65

011099889001010 6 60 5 65

011099889002031 1 60 5 65

011099890001012 5 60 5 65

011099891004059 6 60 5 65

ICF International G-18 DRAFT - December 2006
Appendix G

From Non-air 

Sources

From Air-related 

Sources Total

Current Conditions Scenario: Predicted Indoor Dust 

Concentrations (mg/kg)

Children 

Ages 0 to 7 

Years in 

2000

Block FIPS

Exhibit G-3. Secondary Pb Smelter: Modeled Indoor Dust Concentrations

011099891004051 4 60 5 65

011099891004034 1 60 5 65

011099890001006 5 60 5 65

011099891004049 6 60 5 65

011099891004048 2 60 5 65

011099891004041 9 60 5 65

011099891004052 2 60 5 65

011099890003077 1 60 5 65

011099890001018 1 60 5 65

011099890003080 18 60 5 65

011099890001008 2 60 5 65

011099889002012 2 60 5 65

011099889002014 1 60 5 65

011099891004045 2 60 5 65

011099889001011 20 60 5 65

011099890001020 1 60 5 65

011099889002019 1 60 5 65

011099889002015 8 60 5 65

011099890003036 2 60 5 65

011099890003109 1 60 5 65

011099890001009 8 60 5 65

011099889001009 2 60 5 65

011099890003078 2 60 5 65

011099889002017 2 60 5 65

011099889002020 1 60 5 65

011099890001010 1 60 5 65

011099891004033 2 60 5 65

011099890003058 1 60 5 65

011099891004036 8 60 5 65

011099890001013 2 60 4 64

011099889001007 32 60 4 64

011099889002007 1 60 4 64

011099889002016 2 60 4 64

011099890003079 5 60 4 64

011099890003056 2 60 4 64

011099890001002 26 60 4 64

011099889002006 4 60 4 64

011099890003060 4 60 4 64

011099890003055 4 60 4 64

011099889001005 8 60 4 64

011099889002001 2 60 4 64

011099890003037 7 60 4 64

011099890001000 13 60 4 64

011099889002000 7 60 4 64

011099890001019 1 60 4 64

011099890003054 1 60 4 64

011099891004057 4 60 4 64

011099889001004 60 60 4 64

011099890003053 2 60 4 64

011099891004058 6 60 4 64

011099890001001 1 60 4 64

ICF International G-19 DRAFT - December 2006
Appendix G

From Non-air 

Sources

From Air-related 

Sources Total

Current Conditions Scenario: Predicted Indoor Dust 

Concentrations (mg/kg)

Children 

Ages 0 to 7 

Years in 

2000

Block FIPS

Exhibit G-3. Secondary Pb Smelter: Modeled Indoor Dust Concentrations

011099891004031 16 60 4 64

011099891004039 2 60 4 64

011099891004038 1 60 4 64

011099891004037 6 60 4 64

011099890003114 8 60 4 64

011099889001012 3 60 4 64

011099889001013 5 60 4 64

011099890003064 1 60 4 64

011099890003065 3 60 4 64

011099889003042 3 60 4 64

011099890003073 2 60 4 64

011099890003068 10 60 4 64

011099890001003 2 60 4 64

011099890001005 1 60 4 64

011099889003043 22 60 4 64

011099889003044 3 60 4 64

011099890003072 1 60 4 64

011099890003061 16 60 3 63

011099890003069 2 60 3 63

011099890003052 1 60 3 63

011099889003041 7 60 3 63

011099890003066 1 60 3 63

011099890003128 6 60 3 63

011099889001002 4 60 3 63

011099891004054 5 60 3 63

011099889001014 3 60 3 63

011099890003071 4 60 3 63

011099890003067 1 60 3 63

011099889003051 19 60 3 63

011099891004056 2 60 3 63

011099890003070 3 60 3 63

011099890003155 5 60 3 63

011099889004015 3 60 3 63

011099890003076 1 60 3 63

011099891004055 4 60 3 63

011099890003031 2 60 3 63

011099890003051 9 60 3 63

011099890003050 2 60 3 63

011099890003152 1 60 3 63

011099889003028 1 60 3 63

011099890003049 2 60 3 63

011099890003159 1 60 3 63

011099890003014 1 60 3 63

011099889003027 4 60 3 63

011099891004030 2 60 3 63

011099889004014 2 60 3 63

011099890003115 6 60 3 63

011099889004016 4 60 3 63

011099891004072 2 60 3 63

011099889003012 20 60 3 63

011099889001001 1 60 2 62

ICF International G-20 DRAFT - December 2006
Appendix G

From Non-air 

Sources

From Air-related 

Sources Total

Current Conditions Scenario: Predicted Indoor Dust 

Concentrations (mg/kg)

Children 

Ages 0 to 7 

Years in 

2000

Block FIPS

Exhibit G-3. Secondary Pb Smelter: Modeled Indoor Dust Concentrations

011099890003127 2 60 2 62

011099890003160 2 60 2 62

011099890003110 2 60 2 62

011099889003026 70 60 2 62

011099889004021 1 60 2 62

011099890003020 4 60 2 62

011099890003121 17 60 2 62

011099890003007 5 60 2 62

011099889004022 5 60 2 62

011099890003122 2 60 2 62

011099889004017 4 60 2 62

011099890003123 1 60 2 62

011099889003013 3 60 2 62

011099889003023 7 60 2 62

011099890003006 2 60 2 62

011099890003112 1 60 2 62

011099890003004 6 60 2 62

011099890003002 2 60 2 62

011099890003015 2 60 2 62

011099890003129 1 60 2 62

011099890003003 1 60 2 62

011099892001029 1 60 2 62

011099892001031 1 60 2 62

011099892001027 1 60 2 62

011099891004025 11 60 2 62

011099890003001 1 60 2 62

011099889003017 2 60 2 62

011099892001028 3 60 2 62

011099892001068 12 60 2 62

011099891004028 5 60 2 62

011099889003033 2 60 2 62

011099889004006 5 60 2 62

011099889004023 2 60 2 62

011099889003016 1 60 2 62

011099891004024 1 60 2 62

011099891004089 3 60 2 62

011099891004081 1 60 2 62

011099889004008 3 60 1 61

011099891004092 17 60 1 61

011099891004091 3 60 1 61

011099891004019 6 60 1 61

011099889003035 1 60 1 61

011099891004018 3 60 1 61

011099892001066 1 60 1 61

011099889003020 1 60 1 61

011099892001004 15 60 1 61

011099889003010 1 60 1 61

011099891004013 5 60 1 61

011099891004014 21 60 1 61

011099889003021 1 60 1 61

011099892001001 15 60 1 61

ICF International G-21 DRAFT - December 2006
Appendix G

From Non-air 

Sources

From Air-related 

Sources Total

Current Conditions Scenario: Predicted Indoor Dust 

Concentrations (mg/kg)

Children 

Ages 0 to 7 

Years in 

2000

Block FIPS

Exhibit G-3. Secondary Pb Smelter: Modeled Indoor Dust Concentrations

011099891004011 3 60 1 61

011099891004093 1 60 1 61

011099889004000 21 60 1 61

011099892001036 2 60 1 61

011099891004017 1 60 1 61

011099892001002 2 60 1 61

011099891004007 6 60 1 61

011099892001000 1 60 1 61

011099892001006 5 60 1 61

011099892001008 3 60 1 61

011099891004095 1 60 1 61

011099891004096 8 60 1 61

011099891004098 9 60 1 61

011099889003002 4 60 1 61

011099892001007 5 60 1 61

011099891004010 2 60 1 61

011099891004004 35 60 1 61

011099892001005 14 60 1 61

011099889003003 8 60 1 61

011099891004006 1 60 1 61

011099891004005 1 60 1 61

011099892001009 31 60 1 61

011099891004003 3 60 1 61

011099892001026 12 60 1 61

011099892001011 2 60 1 61

011099892001010 12 60 1 61

011099892001038 2 60 1 61

011099892001037 20 60 1 61

011099892001013 3 60 1 61

011099891004000 1 60 1 61

011099892001012 40 60 1 61

011099892001042 2 60 1 61

011099891004100 3 60 1 61

011099892001039 17 60 1 61

011099892001053 1 60 1 61

011099892001047 3 60 1 61

011099892001070 1 60 1 61

011099892001062 2 60 1 61

011099892001052 1 60 1 61

011099892001059 2 60 1 61

011099892001051 7 60 0 60

ICF International G-22 DRAFT - December 2006
 Appendix G 

 

ICF International G-23 DRAFT – December 2006 

Exhibit G-4. Input Parameters for Secondary Pb Smelting Facility Soil Calculations 

Use in model Parameter Description Value Used Source and Reasona

Dyd 

Yearly dry 

deposition rate 

of contaminant 

Varies by 

block (g/m2

-yr) 

(See Exhibit 

G-2 for values) 

AERMOD results – deposition at each 

block was assumed constant for 

modeling period. 

Dyw 

Yearly wet 

deposition rate 

of contaminant 

0 AERMOD results indicated very small 

wet deposition. 

tD 

Total time 

period over 

which deposition 

occurs 

37 years 

Lifetime of the facility (1969 to present, 

according to Alabama Department of 

Environmental Management [2006]). 

Zs Soil mixing 

depth 1 cm 

HHRAP; California Office of 

Environmental Health Hazard 

Assessment (2000); and for consistency 

with primary Pb smelter soil samples. 

Mixing equation 

parameters 

BD Bulk density of 

soil 

Varies (g/cm3

) 

(Average 1.47) 

From soil survey for Pike county (NRCS 

2006). Soil type at each block centroid 

was identified. 

My Rainfall 136.7 cm/year Annual normal precipitation from 1971 

to 2000 for Troy, AL (NCDC 2002). 

Loss equation I Irrigation 0 Assumption. 

meteorological 

parameters Ev Evapotranspiration 82.5 cm/yr 

Midpoint of estimated 

evapotranspiration for Alabama based 

on hydrologic budget of the state 

(Hanson 1991). 

RO Average annual 

surface runoff 51.1 cm/yr Value for the south east central United States (McKone and Bodnar 2001). 

esw 

Volumetric soil 

water content 0.2 mL/cm3

 HHRAP midpoint value default. 

Kds 

Soil-water 

partitioning 

coefficient 

900 mL/g HHRAP default for Pb. 

SD Sediment 

delivery ratio 0.18 MPE default. 

Loss equation 

soil and 

contaminant 

properties 

ER Contaminant 

enrichment ratio 1 HHRAP default. 

R Erosivity factor 350 yr-1 Estimated from U.S. Soil Conservation 

Service Map in Schwab et al. (1993). 

K Erodibility factor 

Varies 

(ton/acre) 

(average 0.18) 

From soil survey for Pike county (NRCS 

2006). Soil type at each block centroid 

was identified. 

LS 

Topographical 

or slope-length 

factor 

1.5 

HHRAP default that represents a variety 

of distance and slope conditions. 

Default was selected because of the 

large area used relative to the intended 

design of USLE. 

C 

Cover 

management 

factor 

0.1 HHRAP value for grass and agricultural 

crops. 

Loss equation 

Universal Soil 

Loss Equation 

(USLE) 

additional 

parameters 

P Supporting 

practice factor 0 

HHRAP conservative assumption that 

no erosion prevention methods are in 

place. a 1 HHRAP refers to USEPA (2006) and MPE refers to USEPA (1998). 

2 
 Appendix G 

 

ICF International G-24 DRAFT – December 2006 

1 References 

2 Alabama Department of Environmental Management (ADEM). (2006) Personal communication 

3 with Charles Killebrew. September 6, 2006. 

4 California Office of Environmental Health Hazard Assessment. (2000) Air Toxics "Hot Spots" 

5 Program Risk Assessment Guidelines Part IV: Technical Support Document for Exposure 

6 Assessment and Stochastic Analysis. September. Available at 

7 http://www.oehha.org/air/hot_spots/finalStoc.html#download. 

8 Hanson, R.L. (1991) Evapotranspiration and Droughts in National Water Summary 1988-1989 - 

9 Hydrologic Events and Floods and Droughts. U.S. Geological Survey Water-Supply Paper 2375. 

10 Available at http://geochange.er.usgs.gov/sw/changes/natural/et. 

11 McKone, T.E. and Bodnar, A.B. (2001) Development and Evaluation of State-Specific 

12 Landscape Data Sets for Multimedia Source-to-Dose Models. Ernesto Orlando Lawrence 

13 Berkley National Laboratory. LBNL-43722. July. 

14 National Climatic Data Center (NCDC). (2002) Climatography of the United States. No. 81, 

15 Volumes 1 and 23. Available at http://cdo.ncdc.noaa.gov/CDO/cdo. 

16 National Resources Conservation Service (NRCS). (2006) Soil Survey Geographic (SSURGO) 

17 Database for Pike County, Alabama. Fort Worth, TX: U.S. Department of Agriculture. Available 

18 at http://www.ftw.nrcs.usda.gov/ssur_data.html. 

19 Schwab, G.O., Fangmeier, D.D., Elliot, W.J., and Frevert, R.K. (1993) Soil and water 

20 conservation engineering. Wiley: New York. 

21 U.S. Environmental Protection Agency (USEPA). (1998) Methodology for Assessing Health 

22 Risks Associated with Multiple Pathways of Exposure to Combustor Emissions. Cincinnati, OH: 

23 Update to EPA/600/6-90/003, EPA/NCEA (EPA 600/R-98/137). Available at 

24 oaspub.epa.gov/eims/eimscomm.getfile?p_download_id=427339.

25 U.S. Environmental Protection Agency (USEPA). (2006) Human Health Risk Assessment 

26 Protocol for Hazardous Waste Combustion Facilities. Office of Solid Waste and Emergency 

27 Response. EPA530-R-05-006. September. Available at 

28 http://www.epa.gov/epaoswer/hazwaste/combust/risk.htm. 
Appendix H 

Data Supporting National-Scale Surface Water Ecological Risk 

Screening Assessment

Appendix H 

ICF International H-1 DRAFT – December 2006 

1 Appendix H presents step-by-step instructions for performing queries in the National Water 

2 Quality Assessment (NAWQA) Database to obtain Pb concentration data in surface waters and 

3 sediment, as well as a list of U.S. Geological Survey study units/basins in the NAWQA 

4 Database. Exhibit H-1 lists the NAWQA study units/basins, the number of sampling stations in 

5 each study unit/basin, and the number of sampling stations with available dissolved Pb 

6 concentration data. A discussion of these results is provided in Chapter 4 of the report. 

7 

8 The remainder of Appendix H presents a discussion of dissolved Pb measurements at NAWQA 

9 stations as well as characteristics of sampling locations where dissolved Pb concentrations 

10 exceed EPA ambient water quality criteria for the protection of aquatic life and their uses. These 

11 results are discussed in Chapter 7 of the report. 
 Appendix H 

 

 

ICF International H-2 DRAFT – December 2006 

1 H.1 Instructions for Downloading Data from the NAWQA Database 

2 

3 1) Go to the Web page: 

4 http://infotrek.er.usgs.gov/traverse/f?p=NAWQA:HOME:6086610979587376337

5 

6 2) Under “Retrieve Data” on the left-hand panel, select Surface Water/Bed Sediment. 

7 

8 3) On the Surface Water/Bed Sediment page, select Expanded Cross-tab (Pivot Table) 

9 Output. 

10 4) On the SWmaster – crosstab-expanded page, selected the Search icon ( ). 

11 

12 5) Choose NAWQA Study Unit(s)

13 • Select/highlight multiple study units from the list under the “Available” box on the left, 

14 then select the Move icon ( ). Highlighted study units should appear under the 

15 “Selected” box on the right. Click the Select button below the “Selected” box. This 

16 returns you to the SWmaster – crosstab-expanded page. 

17 

18 6) Next choose Lab Schedule(s)

19 • Select/highlight lab schedule(s) of interest (i.e., “Trace Elements in Water (2703) [17]”) 

20 from the list under the “Available” box on the left, then select the Move icon ( ). 

21 Highlighted lab schedule(s) should appear under the “Selected” box on the right. Click 

22 the Select button below the “Selected” box. This returns you to the SWmaster – crosstab23 expanded page. (To query sediment data instead of and/or in addition to surface water 

24 data, select the “Trace Elements in Sediment (2420) [48]” option instead of and/or in 

25 addition to “Trace Elements in Water (2703) [17]” when highlighting lab schedule(s) of 

26 interest.) 

27 

28 7) Next choose Water Year(s)

29 • Click on “Next 25” under “Available” box four times, so that the years displayed are 

30 1995 through 2010. Select/highlight 1995 through 2004 from the list under the 

31 “Available” box on the left, then select the Move icon ( ). Highlighted years should 

32 appear under the “Selected” box on the right. Click the Select button below the 

33 “Selected” box. 

34 

35 8) On the SWmaster – crosstab-expanded page, select Go at the bottom of the page. Once the 

36 Query progress page progresses into a page where available data is displayed, click 

37 Export, in the top left corner of the page under “Actions.” 

38 

39 10) On the Choose Export Type page, select the type of file to be exported (i.e., .csv) and select 

40 the Export button on the right. 

41 

42 11) On the Export Ready page, select Click to View or Save. The .csv file (or other requested 

43 file type) should download. 
 Appendix H 

 

 

ICF International H-3 DRAFT – December 2006 

Exhibit H-1. USGS NAWQA Study Units and Sampling Stations for which 

Dissolved Pb was Measureda

 

Study 

Unit 

ID 

Study Unit (Basin) Name 

(Year Sampling Started) 

Number 

of 

Stations 

in Unit 

Number of 

Stations With 

No Dissolved 

Pb 

Measurements 

Number of 

Stations With 

Dissolved Pb 

Measurements 

Fraction of 

Stations with 

Dissolved Pb 

Measurements 

28 ACAD Acadian-Pontchartrain 

(1997) 69 64 5 7.2% 

19 ALBE Albemarle-Pamlico 

Drainage (1991) 93 84 9 9.7% 

9 ALMN Allegheny and 

Monongahela (1994) 130 119 11 8.5% 

22 ACFB 

ApalachicolaChattahoochee-Flint River 

Basin (1991) 

104 101 3 2.9% 

49 CAZB Central Arizona Basins 

(1994) 17 12 5 29.4% 

50 

51 CCYK 

Central Columbia Plateau 

& Yakima River Basin 

(1991, 1999) 

89 55 34 38.2% 

35 CNBR Central Nebraska Basins 

(1991) 17 8 9 52.9% 

2 CONN 

Connecticut - Housatonic - 

and Thames River Basins 

(1991) 

68 46 22 32.4% 

59 COOK Cook Inlet Basin 43 31 12 27.9% 

5 DELR Delaware River Basin 

(1997) 94 92 2 2.1% 

30 EIWA Eastern Iowa Basins (1994) 33 32 1 3.0% 

23 GAFL Georgia-Florida Coastal 

Plain (1991) 24 24 0 0.0% 

47 GRSL Great Salt Lake Basins 

(1997) 112 67 45 40.2% 

3 HDSN Hudson River Basin (1991) 32 31 1 3.1% 

10 KANA Kananha-New River Basin 

(1994) 66 62 4 6.1% 

11 LERI Lake Erie - Lake St. Clair 

Drainage (1994) 11 11 0 0.0% 

4 LINJ 

Long Island and New 

Jersey Coastal Drainage 

(1994) 

62 62 0 0.0% 

15 LIRB Lower Illinois River Basin 

(1994) 29 29 0 0.0% 

6 LSUS Lower Susquehanna River 

Basin (1991) 57 57 0 0.0% 

27 MISE Mississippi Embayment 

(1994) 11 11 0 0.0% 

26 MOBL Mobile River and 

Tributaries (1997) 39 31 8 20.5% 

55 NVBR Nevada Basin and Range 

(1991) 16 13 3 18.8% 

1 NECB New England Coastal 

Basins (1997) 36 35 1 2.8% 

46 NROK 

Northern Rockies 

Intermontane Basins 

(1997) 

30 1 29 96.7% 

58 OAHU Oahu (1997) 16 8 8 50.0% 
 Appendix H 

 

 

ICF International H-4 DRAFT – December 2006 

Exhibit H-1. USGS NAWQA Study Units and Sampling Stations for which 

Dissolved Pb was Measureda

 

Study 

Unit 

ID 

Study Unit (Basin) Name 

(Year Sampling Started) 

Number 

of 

Stations 

in Unit 

Number of 

Stations With 

No Dissolved 

Pb 

Measurements 

Number of 

Stations With 

Dissolved Pb 

Measurements 

Fraction of 

Stations with 

Dissolved Pb 

Measurements 

31 OZRK Ozark Plateaus (1991) 51 14 37 72.5% 

8 

7 PODL 

Potomac River Basin & 

Delmarva Peninsula (1991, 

1999) 

68 68 0 0.0% 

52 PUGT Puget Sound Basin (1994) 11 7 4 36.4% 

18 REDN Red River of the North 

Basin (1991) 23 23 0 0.0% 

45 RIOG Rio Grande Valley (1991) 18 0 18 100.0% 

54 SACR Sacramento River Basin 

(1994) 34 22 12 35.3% 

56 SANJ San Joaqin-Tulare Basins 

(1991) 36 36 0 0.0% 

57 SANA Santa Ana River Basin 

(1997) 41 33 8 19.5% 

21 SANT Santee Basin and Coastal 

Drainages (1994) 48 48 0 0.0% 

34 SCTX South central Texas (1994) 14 4 10 71.4% 

40 SPLT South Platte River Basin 

(1991) 48 44 4 8.3% 

24 SOFL Southern Florida (1994) 26 26 0 0.0% 

20 

29 TENN 

Tennessee River Basin 

(upper & lower; 1994, 

1997) 

130 130 0 0.0% 

33 TRIN Trinity River Basin (1991) 19 18 1 5.3% 

44 UCOL Upper Colorado River 

Basin (1994) 68 23 45 66.2% 

14 UIRB Upper Illinois River Basin 

(1997) 56 56 0 0.0% 

17 UMIS Upper Mississippi River 

Basin (1994) 44 44 0 0.0% 

48 USNK Upper Snake River Basin 

(1991) 35 29 6 17.1% 

16 WMIC Western Lake Michigan 

Drainage (1991) 72 72 0 0.0% 

13 

12 WHMI 

White River & Great and 

Little Miami River Basins 

(1991, 1997) 

104 104 0 0.0% 

53 WILL Williamette Basin (1991) 47 46 1 2.1% 

43 YELL Yellowstone Basin (1997) 14 3 11 78.6% 

 TOTAL 2305 1936 369 16.0% a

 Listed in alphabetical order by four-letter code; numbers correspond to those on the map in Exhibit 4-32. 

Note: The NAWQA Web site (water.usgs.gov/nawqa/nawqamap.html) lists a total of 59 study units; however, 

sampling has not started at eight of those units, and some of the other units appear to have been combined into a 

single unit in the database (e.g., the Central Columbia Plateau (CCPT) Unit, started in 1991, and the Yakima River 

Basin (YAKI) Unit, started in 1999, appear to have been combined into the Central Columbia Plateau-Yakima River 

Basin (CCYK) Unit in the data warehouse). 

1 

2 
 Appendix H 

 

 

ICF International H-5 DRAFT – December 2006 

1 H.2 Dissolved Pb Measurements 

2 

3 This section presents the dissolved Pb concentrations at individual NAWQA sampling stations 

4 where one or more samples exceeded the initial screening value of 1.2 μg/L. Dissolved Pb 

5 concentrations are also reported for those stations which exceeded the second screening value for 

6 the water hardness-specific Criterion Continuous Concentration (CCC) for areas with very soft 

7 water (i.e., hardness less than 50 mg/L as CaCO3). The CCC is also known as the chronic 

8 Ambient Water Quality Criteria (AWQC) for the protection of aquatic life and its uses. The 

9 dissolved Pb concentration of 1.2 μg/L was selected for the initial screening assessment because 

10 it is the CCC for a water hardness of 50 mg/L, considered to be soft water. However, for areas 

11 of the country with even softer water, the CCC is less than 1.2 μg/L. To determine how much 

12 less, for the second screening assessment, the co-located (or nearby) measures of CaCO3 were 

13 identifies and used to calculate the hardness-specific CCC for comparison with the Pb 

14 concentrations. 

15 

16 For ease of data management, the results from the 47 NAWQA Study Units are divided into 2 

17 groups: 1) data from the first 25 Units (alphabetically by Unit code) and 2) data from the 

18 remaining 22 Units. Exhibits H-2 and H-4 present the results of the initial screening assessment 

19 against a concentration of 1.2 μg/L dissolved Pb. In these data sets, most measurements were 

20 made with a quantitation limit (QL) of 1 μg/L, although some QLs were lower and a few QLs 

21 were higher (2 μg/L). The QL was less than the screening value for almost all samples. For 

22 samples with a QL of 2 μg/L, the reported concentration is listed in the table as “< 2” μg/L. 

23 Exhibits H-3 and H-5 present the results of the second screening assessment for which hardness24 specific CCC values of less than 1.2 μg/L were calculated. The interpretation of these data was 

25 complicated by the most frequent QL of 1 μg/L, which was higher than the CCC. For cases 

26 where all reported concentrations for a sampling station were less than the location-specific CCC 

27 or below the QL, the sampling station was removed from the analysis. The fraction of samples 

28 exceeding the screening value is reported in all cases. 

29 

30 Each exhibit presents the individual measured dissolved Pb concentrations for single sampling 

31 events that exceed the screening value (either 1.2 μg/L or the location-specific CCC) and the 

32 mean value of the measurements that exceed the screening value. Measurements less than the 

33 screening value are not included in the estimate of the mean, nor are the QL or one half of the 

34 QL included in the estimate of the mean for measures less than the QL. The mean value simply 

35 describes the average amount by which the screening value is exceeded when exceedance can be 

36 demonstrated. 

37 

38 The risk to aquatic communities were considered to be negligible, with no further analysis 

39 needed for stations at which less than 5 percent of the samples demonstrated to exceed the 

40 screening value (1.2 μg/L or the location-specific CCC) and the ratio of the few measured values 

41 to the screening assessment was less than five. This is represented in Exhibits H-2 through H-5 

42 by “na.” 

43 

44 

45 
ICF International H-6 D

Exhibit H-2. Dissolved Pb Measurements Exceeding 1.2 μg/L at NAWQA Sampling Stations Between 1994 

Study Units (1.2 μg/L = CCC at a Water Hardness of 50 mg/L as CaCO3)

State 

Study 

Unit 

ID 

Station 

ID Place Name Land Use Latitude Longitude 

No. 

[Pb] > 

1.2 

μg/L / 

Total N 

Measurem

Date and 

AZ CAZB 9517000 Hassayampa River nr Arlington Agriculture 33.3 -112.7 1/1 1/22/1997 

WA CCYK 461850120005800 Sunnyside WWTP Other/Mixed 46.31385 -120.0174 1/1 8/4/1999 1

NE CNBR 6805500 Platte River at Louisville Mixed 41 -96.2 2/45 – 12/16/1999 

na 6/17/1999 

CT CONN 1208500 Naugatuck R at Beacon Falls Mixed 41.4 -73.1 1/23 – 3/7/1995 1CT CONN 1196500 Quinnipiac River at Wallingford Urban 41.4 -72.8 1/25 – 8/3/1995 CT CONN 1125100 French R at N Grosvenordale Mixed 42 -71.9 1/23 – 6/11/1996 

AK COOK 600715152572800 Ef Ore C near Mth near Johnson Gl near Tuxedni Bay Reference 60.12022 -152.96 1/1 7/25/2000 

UT GRSL 8/21/2000 

404847111240501 Silver Creek at Wanship Rangeland 40.81306 -111.4014 2/2 3/13/2000 

UT GRSL 3/10/2000 

404431111282901 Silver Creek near Atkinson Urban 40.74194 -111.4747 2/2 8/16/2000 

5/16/2000 4/24/2000 6/12/2000 

UT GRSL 404026111273001 Silver Creek above Richardson Flat Rangeland 40.67678 -111.4613 4/5 

8/16/2000 

UT GRSL 403938111300201 Silver Cr at Bonanza Dr., Park City Urban 40.7 -111.5 1/2 8/16/2000 

3/23/1999 2/23/1999 

UT GRSL 10168000 Little Cottonwood Creek @ Jordan River near SLC Residential 40.7 -111.9 2/49 – 

na 

12/22/1999 

UT GRSL 10130500 Weber River near Coalville Forest 40.9 -111.4 1/20 – 3/21/2000 
ICF International H-7 D

Exhibit H-2. Dissolved Pb Measurements Exceeding 1.2 μg/L at NAWQA Sampling Stations Between 1994 

Study Units (1.2 μg/L = CCC at a Water Hardness of 50 mg/L as CaCO3)

State 

Study 

Unit 

ID 

Station 

ID Place Name Land Use Latitude Longitude 

No. 

[Pb] > 

1.2 

μg/L / 

Total N 

Measurem

Date and 

6/19/2001 

RI NECB 1112900 Blackstone River at Manville Mixed 41.97121 -71.47006 1/3 7/18/2001 

8/28/2001 

WA NROK 12424500 Spokane River at 7-mile Bridge nr Spokane Urban 47.7 -117.5 1/25 – na 5/3/2000 1

 4/3/2000 1

 4/28 4/3/2000 1

 6/3/1999 1

WA NROK 12422500 Spokane River at Spokane Urban 47.65934 -117.4491 

 6/3/1999 1

4/5/2000 1

WA NROK 12422000 

Spokane River below Green St at Spokane Urban 47.7 -117.4 2/20 4/5/2000 1

12/2/1999 

3/17/1999 4/10/2000 2/28/2000 5/27/1999 12/9/1998 4/14/2000 

ID NROK 12413470 SF Coeur D'Alene River near 

Pinehurst 

Mining 47.55159 -116.2379 

33/33 

5/3/2001 1
ICF International H-8 D

Exhibit H-2. Dissolved Pb Measurements Exceeding 1.2 μg/L at NAWQA Sampling Stations Between 1994 

Study Units (1.2 μg/L = CCC at a Water Hardness of 50 mg/L as CaCO3)

State 

Study 

Unit 

ID 

Station 

ID Place Name Land Use Latitude Longitude 

No. 

[Pb] > 

1.2 

μg/L / 

Total N 

Measurem

Date and 

4/17/2000 3/23/1999 6/29/1999 3/27/2000 1/11/2000 

5/2/2000 1

5/18/2000 3/14/2001 

6/2/2000 

12/18/2000 

5/25/1999 

9/8/1999 1

6/12/2001 4/10/2001 1/23/2001 4/20/1999 9/10/2001 6/29/2000 

9/6/2000 1

11/6/2000 8/31/2000 

10/19/1999 

7/24/2000 7/26/1999 

SF Coeur D'Alene River near Pinehurst (continued) 

11/4/1998 
ICF International H-9 D

Exhibit H-2. Dissolved Pb Measurements Exceeding 1.2 μg/L at NAWQA Sampling Stations Between 1994 

Study Units (1.2 μg/L = CCC at a Water Hardness of 50 mg/L as CaCO3)

State 

Study 

Unit 

ID 

Station 

ID Place Name Land Use Latitude Longitude 

No. 

[Pb] > 

1.2 

μg/L / 

Total N 

Measurem

Date and 

ID NROK 12413150 SF Coueur D'Alene River at Silverton Mining 47.55159 -116.2379 1/1 8/25/2000 ID NROK 12413123 Canyon Creek at Woodland Park Mining 47.48854 -115.8904 1/1 8/23/2000 

12/6/1994 

2/21/1995 

11/2/1994 

1/7/1995 

NV NVBR 94196783 

Lv Wash below Flamingo Wash confluence near Las Vegas Urban 36.1 -115 1/19 b

1/10/1995 

a Mean of samples greater than 1.2 μg/L or greater than the quantitation limit (QL), whichever is higher. b At this station, there were fourteen samples less than a QL of 1 μg/L and four samples less than a QL of 2 μg/L. 
ICF International H-10 D

Exhibit H-3. Dissolved Pb Measurements Exceeding the CCC at NAWQA Sampling Stations with Soft W

as CaCO3) between 1994 and 2004 for First 25 Study Units

State 

Study 

Unit ID 

Station 

ID Place Name Land Use Latitude Longitude 

No. [Pb] > 

CCC / Total N

Measur

Date an

CT CONN 1208049 Naugatuck River near Waterville Mixed 41.6 -73.1 1/21 - na 7/9/2001 

CaCO3 = 23.5 mg/L; CCC = 0.51 μg/L; 13 samples < 1 μg/L; 

5/23/200

6/6/2001 

Mixed 41.6 -72 3/22 

7/18/200

CT CONN 1127000 Quinebaug River at Jewett City 

CaCO3 = 17.4 mg/L; CCC = 0.36 μg/L; 14 samples < 1 μg/L; 

9/24/20011/6/200

5/21/2008/22/2007/16/2002/7/1995 6/15/1998/10/1997/10/1998/26/199

Mixed 42 -72 11/23 

9/12/199

CT CONN 1124000 Quinebaug River at Quinebaug 

CaCO3 = 14.7 mg/L CCC = 0.30 μg/L; 9 samples < 1 μg/L; 3 

 1/22/200

5/20 9/12/200

 11/14/200 6/25/200

Mixed 41.8 -72.3 

 8/15/200

CT CONN 1119375 Willimantic River at Merrow 

CaCO3 = 9.5 mg/L; CCC = 0.18 μg/L; 13 samples < 1 μg/L; 
ICF International H-11 D

Exhibit H-3. Dissolved Pb Measurements Exceeding the CCC at NAWQA Sampling Stations with Soft W

as CaCO3) between 1994 and 2004 for First 25 Study Units

State 

Study 

Unit ID 

Station 

ID Place Name Land Use Latitude Longitude 

No. [Pb] > 

CCC / Total N

Measur

Date an

5/3/200

Mixed 47.7 -117 2/26 

5/7/2001 

ID NROK 12419000 Spokane River near Post Falls 

CaCO3 = 17.9 mg/L; CCC = 0.37 μg/L; 16 samples < 1 μg/L; 8 sam

11/9/204/11/20

5/4/20

Forest 48.2 -116.2 4/17 

6/14/20

ID NROK 12392155 Lightning Creek at Clark Fork 

CaCO3 = 8.8 mg/L; CCC = 0.17 μg/L; 10 samples < 1 μg/L; 3 samp

a Mean of values greater than CCC. 
ICF International H-12 D

Exhibit H-4. Dissolved Pb Measurements Exceeding 1.2 μg/L at NAWQA Sampling Stations Between 1994 a

Study Units (1.2 μg/L = CCC at a Water Hardness of 50 mg/L as CaCO3)

State Study Unit 

ID 

Station 

ID Place Name Land Use Latitude Longitude 

No [Pb] 

> 1.2 

μg/L / 

Total N 

Measurem

Date and T

AR OZRK 7050500 Kings River near Berryville Mixed 36.42599 -93.62319 1/8 6/6/1995 MO OZRK 7018100 Big River near Richwoods Forest 38.1595 -90.70624 1⁄2 5/11/1995 MO OZRK 7061135 West Fork Black River at West Fork Mining 37.49144 -91.09929 1/1 9/11/1995 MO OZRK 7061155 Strother Creek near Oates Mining 37.59005 -91.05485 1/1 9/19/1995 

12/2/1994 

5/12/1995 

NM RIOG 8317200 

Santa Fe River above Cochiti Lake Urban 35.54698 -106.2286 3/3 

8/2/1995 

NM RIOG 8331000 Rio Grande at Isleta Mixed 34.90589 -106.685 1/12 8/27/1996 

11/19/1996 

TX RIOG 8364000 Rio Grande at El Paso Mixed 31.80289 -106.5408 2/52 – 

na 12/12/1996 

CA SACR 11447360 Arcade c near Del Paso Heights Urban 38.64185 -121.3827 1/28-na 5/23/1997 CO SPLT 6752260 

Cache La Poudre River at Fort Collins Mixed 40.58915 -105.0697 1/4 7/26/1995 

CO SPLT 6752270 

Cahe La Poudre River below Fort Collins Mixed 40.56693 -105.0272 1/4 7/21/1995 

CO SPLT 6752280 

Cahe La Poudre River r above Boxelder c, near Timnath Mixed 40.55193 -105.0114 1/4 7/27/1995 
ICF International H-13 D

Exhibit H-4. Dissolved Pb Measurements Exceeding 1.2 μg/L at NAWQA Sampling Stations Between 1994 a

Study Units (1.2 μg/L = CCC at a Water Hardness of 50 mg/L as CaCO3)

State Study Unit 

ID 

Station 

ID Place Name Land Use Latitude Longitude 

No [Pb] 

> 1.2 

μg/L / 

Total N 

Measurem

Date and T

5/12/1997 

5/6/1999 

5/22/1997 6/10/1999 5/18/1999 

6/2/1998 

8/11/1997 3/23/1998 

5/7/1998 

6/10/1998 

CO UCOL 9046530 French Gulch at Breckenridge Mining 39.49304 -106.0447 50/60 

7/17/1997 4/26/1999 

6/3/1997 

5/18/1998 

7/28/1997 4/17/1996 5/9/1996 

5/16/1996 

6/21/1996 

6/16/1998 7/29/1998 

8/5/1998 

8/18/1999 6/12/1997 4/21/1998 

4/6/1999 
ICF International H-14 D

Exhibit H-4. Dissolved Pb Measurements Exceeding 1.2 μg/L at NAWQA Sampling Stations Between 1994 a

Study Units (1.2 μg/L = CCC at a Water Hardness of 50 mg/L as CaCO3)

State Study Unit 

ID 

Station 

ID Place Name Land Use Latitude Longitude 

No [Pb] 

> 1.2 

μg/L / 

Total N 

Measurem

Date and T

 9/17/1998  5/22/1996  6/25/1996  7/18/1996  4/15/1999  9/17/1999  5/26/1996  9/16/1997  11/19/1997  10/8/1996  3/11/1999  8/15/1996  9/9/1996  3/19/1998  10/23/1997  11/13/1996  12/15/1997  1/20/1999 

French Gulch at Breckenridge (continued) 

 10/23/1995 

11/21/1995 

2/22/1996 1/20/1998 

12/13/1996 

2/17/1998 1/19/1996 

1/16/1997 
ICF International H-15 D

Exhibit H-4. Dissolved Pb Measurements Exceeding 1.2 μg/L at NAWQA Sampling Stations Between 1994 a

Study Units (1.2 μg/L = CCC at a Water Hardness of 50 mg/L as CaCO3)

State Study Unit 

ID 

Station 

ID Place Name Land Use Latitude Longitude 

No [Pb] 

> 1.2 

μg/L / 

Total N 

Measurem

Date and T

2/21/1997 3/21/1996 3/19/1997 

French Gulch at Breckenridge (continued) 4/18/1997 

4/28/1997 5/27/1997 4/30/1999 

7/8/1999 

CO UCOL 9146200 Uncompahgre River near Ridgway Mining 38.18388 -107.7459 1/3 1/10/1996 

7/22/1997 

CO UCOL 375732107394000 Red Mountain Creek above Crystal Lake near Ironton Mining 37.95888 -107.6617 2/2 5/13/1996 CO UCOL 385437107015600 Oh-Be-Joyful Creek at Mo near Crested Butte Mining 38.91027 -107.0328 1/1 7/29/1998 

6/5/1996 

CO UCOL 392907106013900 7/28/1997 

French Gulch above Gibson Gulch Mining 39.48526 -106.0281 1/3 

5/25/1996 

5/22/1996 

CO UCOL 392947106024500 7/30/1997 

Blue River below French Gulch near Breckenridge Mining 39.49638 -106.0464 1/3 

10/25/1995 

CO UCOL 393557105512400 

Peru Creek at mouth near Montezuma Mining 39.59915 -105.8572 1/1 8/6/1998 

4/28/1999 

WY YELL 6324970 Little Powder River above Dry Creek, near Weston Rangeland 44.92693 -105.3533 2/37 - na 9/12/2000 

a Mean of values greater than 1.2 μg/L or greater than the quantitation limit (QL), whichever is higher. 
ICF International H-16 D

Exhibit H-5. Dissolved Pb Measurements Exceeding CCC at NAWQA Sampling Stations with Soft Water (

CaCO3) Between 1994 and 2004 for Remaining Study Units

State Study Unit 

ID 

Station 

ID Place Name Land Use Latitude Longitude 

No [Pb] 

> 1.2 

μg/L / 

Total N 

Measurem

Date and T

Mixed 21.46072 -158.0242 1/2 6/20/2001 

HI OAHU 16212700 Waikakalaua Str near Wahiawa, Oahu CaCO3 = 9 mg/L; CCC = 0.17 μg/L; one sample < 1 μg/L; one sa

6/7/2001 

Other/Mixed 38.88944 -106.9973 1/4 

8/30/2001 

CO UCOL 385240106583600 Slate River above Coal Creek nr Crested Butte 

CaCO3 = 39 mg/L; CCC = 0.89 μg/L; two samples < 1 μg/L; one 

a Mean of values greater than CCC. 
Appendix H 

 

ICF International H-17 DRAFT – December 2006 

1 H.3 Characteristics of Sampling Locations where Dissolved Pb Concentrations Exceed 

2 EPA Ambient Water Quality Criteria for the Protection of Aquatic Life and Their 

3 Uses 

4 

5 Exhibits H-6 through H-20 provide additional information characterizing the fifteen sampling 

6 sites in the NAWQA database with land use characterizations other than mining at which 

7 measured dissolved Pb concentrations exceeded the CCC, or AWQC. For each of the fifteen 

8 sampling sites, four types of information are presented: 

9 

10 1. Site Information: The sampling location (state, county, basin study unit), stated land use 

11 for the site (as of 1983), and a brief summary of the measured dissolved Pb 

12 concentrations compared with the CCC are presented, along with the hazard quotient 

13 (HQ) for the mean dissolved Pb concentration for samples that exceed the CCC. The 

14 number of samples with dissolved Pb concentrations less than the CCC also is noted. 

15 

16 2. Land Use: More current data on the land uses surrounding the sampling sites were 

17 obtained from the 1992 National Land Cover Data (MRLC 1992) for land uses within 20 

18 km of each sampling site, if available. 

19 

20 3. Air Pb Emissions: The number of facilities that emit Pb to the air and the total annual 

21 quantity of Pb emitted to the air, within 20 and 50 km of the sampling site were 

22 determined from the 2002 National Emissions Inventory (USEPA 2006). The facility 

23 emissions to the air within 20 km are likely much more important than the emissions 

24 between 20 and 50 km. Data on non-point and mobile source emissions of Pb were 

25 available only at the county level. 

26 

27 4. National Pollutant Discharge Elimination System (NPDES): For each sampling site, the 

28 watershed was examined to identify facilities in the NPDES database upstream of the 

29 sampling site. For permitted facilities in the database, data are available on the 

30 approximate distance to the sampling site, the Pb permit levels or measurements if 

31 available, and the name and type of facility. However, facilities identified by a Pb query 

32 in NPDES, but without information provided on Pb limits, are also identified and 

33 included. 

34 

35 At the end of the exhibit for each sampling station, there is a brief synopsis of conclusions 

36 concerning the likelihood that aquatic risks are of concern and which sources are potentially 

37 most responsible for the Pb levels measured at the sampling station.

38 

39 

40 

41 

42 

43 

44 

45 

46 
Appendix H 

 

ICF International H-18 DRAFT – December 2006 

1 Exhibit H-6. Station 7050500 in Arkansas 

Sampling Site Information

State – Site ID – Land Use AR – 7050500 – Mixed 

Dissolved Pb 8 samples: 7 < CCC; 1 > CCC; HQ = 3.46 

Watershed, County OZRK, CARROLL 

Place Name KINGS RIVER NEAR BERRYVILLE, AR 

 

Percent Land Use Within 20 km (from NLCD 1992) 

Water Open Water 4.80% 

Low Intensity Residential 0.63% 

Developed High Intensity Residential 0.22% 

Commercial/Industrial/Transportation 0.30% 

Bare Rock/Sand/Clay 0.04% 

Barren Quarries/Strip Mines/Gravel Pits 0.02% 

Transitional 0.21% 

Deciduous Forest 32.05% 

Forested Upland Evergreen Forest 13.24% 

Mixed Forest 11.88% 

Shrubland Shrubland 0.59% 

Herbaceous Upland Grasslands/Herbaceous 0.03% 

Pasture/Hay 34.25% 

Row Crops 1.28% 

Small Grains 0.03% 

Herbaceous Planted/Cultivated 

Urban/Recreational Grasses 0.24% 

Wetlands Woody Wetlands 0.16% 

 

Nearby Air Pb Emissions (from 2002 NEI)

Number of Facilities in 20 km 0 

Emissions to Air within 20 km 0 tons/year 

Number of Facilities in 50 km 2 

Emissions to Air within 50 km 0.00509 tons/year 

Emissions in county from mobile and 

non-point sources 0.00642 tons/year 

2 

Permit Discharge Information for Facilities Upstream of Sampling Site (from NPDES)

Facility name County 

Permit 

Issued 

By 

Approx. 

Distance 

Upstream 

Type of 

Facility Notes 

BERRYVILLE 

CITY OF WWTP CARROLL State 4 km 

SEWERAGE 

SYSTEMS 

This facility resulted in a 

query for Pb discharges, 

but no permit info for Pb 

was found. 

3 

4 Conclusions: One of eight measurements of dissolved Pb exceeded the CCC; for that site, the 

5 HQ was 3.46. Two air Pb emission sources are relatively far from the site and have relatively 

6 low emissions. Pb might come from Berryville waste water treatment plant (WWTP). 

7 
Appendix H 

 

ICF International H-19 DRAFT – December 2006 

Exhibit H-7. Station 7018100 in Missouria 1 

Sampling Site Information

State – Site ID – Land Use MO – 7018100 – Forest 

Dissolved Pb 2 samples: 1 < CCC; 1 > CCC; HQ = 1.89 

Watershed, County OZRK, JEFFERSON 

Place Name BIG RIVER NEAR RICHWOODS MO 

 

Percent Land Use Within 20 km (from NLCD 1992)

Water Open Water 1.04% 

Low Intensity Residential 0.76% 

High Intensity Residential 0.11% 

Developed Commercial/Industrial/Transportation 0.41% 

Bare Rock/Sand/Clay 0.02% 

Quarries/Strip Mines/Gravel Pits 0.05% 

Barren Transitional 0.04% 

Deciduous Forest 65.91% 

Evergreen Forest 4.86% 

Forested Upland Mixed Forest 9.27% 

Shrubland Shrubland 0.01% 

Herbaceous Upland Grasslands/Herbaceous 1.71% 

Herbaceous Planted/Cultivated Pasture/Hay 15.83% 

 

Nearby Air Pb Emissions (from 2002 NEI)

Number of Facilities in 20 km 0 

Emissions to Air within 20 km 0 tons/year 

Number of Facilities in 50 km 14 

Emissions to Air within 50 km 0.344 tons/year 

Emissions in county from mobile 

and non-point sources 0.0179 tons/year a 2 There is no permit discharge information for Pb from facilities upstream of this sampling site in NPDES. 

3 

4 Conclusions: The aquatic risk HQ is relatively low. It is possible that the numerous facilities 

5 emitting Pb to air between 20 and 50 km from the station are contributing to the Pb concentration 

6 in water. A small proportion (0.05 percent) of the land within 20 km of the sampling site is 

7 designated as “quarries/strip mines/gravel pits”; however, most such locations do not have metal 

8 ores exposed. 
Appendix H 

 

ICF International H-20 DRAFT – December 2006 

1 Exhibit H-8. Station 8331000 in New Mexico

Sampling Site Information

State – Site ID – Land Use NM – 8331000 – Mixed 

Dissolved Pb 12 samples; 11 < CCC; 1 > CCC; HQ = 1.03 

Watershed, County RIOG, VALENCIA 

Place Name RIO GRANDE AT ISLETA, NM 

 

Percent Land Use Within 20 km (from NLCD 1992)

Water Open Water 0.67% 

Low Intensity Residential 4.81% 

Developed High Intensity Residential 0.04% 

Commercial/Industrial/Transportation 3.33% 

Bare Rock/Sand/Clay 7.13% Barren 

Quarries/Strip Mines/Gravel Pits 0.19% 

Deciduous Forest 0.23% 

Forested Upland Evergreen Forest 0.13% 

Mixed Forest 0.01% 

Shrubland Shrubland 52.32% 

Non-natural Woody Orchards/Vineyards/Other 0.14% 

Herbaceous Upland Grasslands/Herbaceous 24.20% 

Pasture/Hay 3.39% 

Row Crops 2.35% 

Small Grains 0.00% 

Fallow 0.00% 

Herbaceous Planted/Cultivated 

Urban/Recreational Grasses 0.61% 

Woody Wetlands 0.44% Wetlands 

Emergent Herbaceous Wetlands 0.00% 

 

Nearby Air Pb Emissions (from 2002 NEI)

Number of Facilities in 20 km 1 

Emissions to Air within 20 km 0.0678 tons/year 

Number of Facilities in 50 km 6 

Emissions to Air within 50 km 0.0945 tons/year 

Emissions in county from mobile 

and non-point sources 0.0291 tons/year 

2 
Appendix H 

 

ICF International H-21 DRAFT – December 2006 

1 

Permit Discharge Information for Facilities Upstream of Sampling Site (from NPDES) 

Facility Namea County 

Permit 

Issued 

By 

Approx. 

Distance 

Upstream 

Type of 

Facility Pb Permit Limit Measured Values 

SOUTHSIDE 

WATER 

RECLAMATION 

PLANT BERNALILLO 13 km 

SEWERAGE 

SYSTEMS 

Conc. Max: 840mg/kg 

Conc. Avg: 300mg/kg 

QNT Max: 300 kg/Ha 

RIO RANCHO 

CITY OF 

WASTEWATER 

FACILITIES SANDOVAL 40 km 

SEWERAGE 

SYSTEMS 

Conc. Max: 840mg/kg 

Conc. Avg: 300mg/kg 

QNT Max: 300 kg/Ha 

RIO GRANDE 

PORTLAND 

CEMENT 

CORPORATION BERNALILLO 

40 or 50 

km (likely 

upstream, 

hard to 

tell) 

CEMENT, 

HYDRAULIC 

Conc. Max: ADDMON 

Conc. Avg: DELMON a 2 Only facilities in the nearest counties (within a range of about 100 km along the river) were identified. Note that 

3 this sampling site is on the Rio Grande in New Mexico, and the watershed includes a large amount of land area. It is 

4 likely there are many discharges upriver of this point on the Rio Grande. 

5 

6 Conclusions: Only one of twelve samples exceeded the CCC, and for that sample, the HQ was 

7 1.03. Thus, aquatic risks at this location are marginal. There is one facility emitting Pb to air 

8 within 20 km, but the quantity of Pb emitted is relativly low. There are only three permitted 

9 discharges upstream of the sample site, none of which are likely to have high levels of Pb. 

10 

11 Exhibit H-9. Station 1112900 in Rhode Island

Sampling Site Information

State – Site ID – Land Use RI – 1112900 – Mixed 

Dissolved Pb 3 samples: 3 > CCC; mean HQ = 2.51; max HQ = 3.53 

Watershed, County NECB – PROVIDENCE 

Place Name Blackstone River at Manville 

 

Percent Land Use Within 20 km (from NLCD 1992)

Water Open Water 2.44% 

Low Intensity Residential 16.26% 

Developed High Intensity Residential 2.69% 

Commercial/Industrial/Transportation 4.62% 

Bare Rock/Sand/Clay 0.04% 

Barren Quarries/Strip Mines/Gravel Pits 0.44% 

Transitional 0.14% 

Deciduous Forest 41.94% 

Forested Upland Evergreen Forest 1.84% 

Mixed Forest 14.57% 

Shrubland Shrubland 0.06% 

Non-natural Woody Orchards/Vineyards/Other 0.09% 

Pasture/Hay 2.29% 

Herbaceous Planted/Cultivated Row Crops 3.50% 

Urban/Recreational Grasses 2.71% 

Woody Wetlands 4.30% Wetlands 

Emergent Herbaceous Wetlands 2.08% 
Appendix H 

 

ICF International H-22 DRAFT – December 2006 

 

Nearby Air Pb Emissions (from 2002 NEI)

Number of Facilities in 20 km 151 

Emissions to Air within 20 km 4.07 tons/year 

Number of Facilities in 50 km 284 

Emissions to Air within 50 km 11.7 tons/year 

Emissions in county from mobile 

and non-point sources 0.146 tons/year 

1 

Permit Discharge Information for Facilities Upstream of Sampling Site (from NPDES)

Facility Name County 

Permit 

Issued 

By 

Approx. 

Distance 

Upstream 

Type of Facility Pb Permit 

Limit 

Measured 

Values Notes 

HEALY 

BROTHERS 

CORP PROVIDENCE State 

At approx. 

same 

location 

as 

monitor. 

NONFERROUS 

FOUNDRIES, 

EXCEPT 

ALUMINUM 

AND COPPER No info on Pb 

This facility resulted 

in a query for Pb 

discharges, but no 

permit info for Pb 

was found. 

NEW 

ENGLAND 

TREATMENT 

COMPANY PROVIDENCE EPA 4 km 

SEWERAGE 

SYSTEMS No info on Pb 

This facility resulted 

in a query for Pb 

discharges, but no 

permit info for Pb 

was found. 

ULTRAFINE 

POWDER 

TECHNOLOGY 

INC PROVIDENCE State 4 km 

PRIMARY 

METAL 

PRODUCTS, 

NOT 

ELSEWHERE 

CLASSIFIED No info on Pb 

This facility resulted 

in a query for Pb 

discharges, but no 

permit info for Pb 

was found. 

WOONSOCKET 

REGIONAL 

WASTEWATER 

COMMISSION PROVIDENCE State 4 km 

SEWERAGE 

SYSTEMS No info on Pb 

This facility resulted 

in a query for Pb 

discharges, but no 

permit info for Pb 

was found. 

FAIRMONT 

FOUNDRY 

COMPANY PROVIDENCE State 5 km 

GRAY AND 

DUCTILE IRON 

FOUNDRIES No info on Pb 

This facility resulted 

in a query for Pb 

discharges, but no 

permit info for Pb 

was found. 

CUMBERLAND 

FOUNDRY 

COMPANY PROVIDENCE State 6 km 

GRAY AND 

DUCTILE IRON 

FOUNDRIES No info on Pb 

This facility resulted 

in a query for Pb 

discharges, but no 

permit info for Pb 

was found. 

HOPEDALE 

WASTE 

WATER 

TREATMENT 

PLANT WORCESTER EPA 

>10 and 

< 40 km 

SEWERAGE 

SYSTEMS 

Up to 

150mg/kg 

NORTHBRIDGE 

WWTP WORCESTER EPA 

>10 and 

< 40 km 

SEWERAGE 

SYSTEMS 

Conc. Max: 

40μg/L Daily 

Avg: DELMON 

Min.:10μg/L 

Monthly 

Up to 65.4 

μg/L 

UPPER 

BLACKSTONE 

WPAD WORCESTER EPA 

>10 and 

< 40 km 

SEWERAGE 

SYSTEMS 

Up to 

150mg/kg 

Not in violation of 

permit 

UPTON WWTF 

UPGRADE AND 

EXPANSION WORCESTER EPA 

>10 and 

< 40 km 

SEWERAGE 

SYSTEMS 

Conc. Max: 

ADDMON 

Avg: DELMON 

(μg/L) 
Appendix H 

 

ICF International H-23 DRAFT – December 2006 

Permit Discharge Information for Facilities Upstream of Sampling Site (from NPDES)

Facility Name County 

Permit 

Issued 

By 

Approx. 

Distance 

Upstream 

Type of Facility Pb Permit 

Limit 

Measured 

Values Notes 

WYMAN 

GORDON 

COMPANY WORCESTER EPA 

>10 and 

< 40 km 

NONFERROUS 

FORGINGS 

Conc. Max: 

ADDMON 

Avg: 

ADDMON 

(mg/L) 

Up to .013 

mg/L 

WYMAN 

GORDON 

COMPANY WORCESTER EPA 

>10 and 

< 40 km 

SECONDARY 

SMELTING 

AND REFINING 

OF 

NONFERROUS 

METALS No info on Pb 

This facility resulted 

in a query for Pb 

discharges, but no 

permit info for Pb 

was found. 

BURRILLVILLE 

WWTF PROVIDENCE State 

>10 and 

< 40 km 

SEWERAGE 

SYSTEMS No info on Pb 

This facility resulted 

in a query for Pb 

discharges, but no 

permit info for Pb 

was found. 

LANDFILL & 

RESOURCE 

RECOVERY 

INC. (L&RR) PROVIDENCE State 

>10 and 

< 40 km 

REFUSE 

SYSTEMS No info on Pb 

This facility resulted 

in a query for Pb 

discharges, but no 

permit info for Pb 

was found. a 1 Most of the Rhode Island facilities in NPDES do not have discharge data on Pb, even though they showed up as 

2 having Pb discharges in the query. 

3 

4 Conclusions: All three samples exceeded the CCC for Pb. The HQ for the mean of all three 

5 samples is relatively low (2.5); the HQ for the maximum of the three samples was slightly higher 

6 (3.5). There are 151 facilities that emit Pb to air within 20 km, and 284 facilities within 50 km, 

7 but there also are some metal refining facilities upstream with NPDES permits that include Pb. 

8 The proportion of land use within 20 km of the site with quarries, strip mines, or gravel pits is 

9 0.44 percent. 

10 

11 Exhibit H-10. Station 12422500 in Washington State

Sampling Site Information

State – Site ID – Land Use WASHINGTON – 12422500 – Urban 

Dissolved Pb 

28 Samples: 24 < QL of 1 μg/L which is > CCC; 4 > CCC; mean 

HQ = 1.14; max HQ = 1.25 

Watershed, County NROK, SPOKANE 

Place Name Spokane River at Spokane 

 
Appendix H 

 

ICF International H-24 DRAFT – December 2006 

Percent Land Use Within 20 km (from NLCD 1992)

Water Open Water 1.10% 

Low Intensity Residential 13.47% 

High Intensity Residential 0.17% 

Developed Commercial/Industrial/Transportation 5.80% 

Bare Rock/Sand/Clay 0.24% 

Barren Transitional 0.93% 

Deciduous Forest 0.16% 

Evergreen Forest 23.17% 

Forested Upland Mixed Forest 0.81% 

Shrubland Shrubland 17.11% 

Non-natural Woody Orchards/Vineyards/Other 0.20% 

Herbaceous Upland Grasslands/Herbaceous 8.30% 

Pasture/Hay 9.62% 

Row Crops 0.06% 

Small Grains 8.58% 

Fallow 9.24% 

Herbaceous Planted/Cultivated Urban/Recreational Grasses 0.89% 

Woody Wetlands 0.06% 

Wetlands Emergent Herbaceous Wetlands 0.11% 

 

Nearby Air Pb Emissions (from 2002 NEI)

Number of Facilities in 20 km 7 

Emissions to Air within 20 km 0.393 tons/year 

Number of Facilities in 50 km 12 

Emissions to Air within 50 km 0.427 tons/year 

Emissions in county from mobile 

and non-point sources 0.239 tons/year 

1 

2 

Permit Discharge Information for Facilities Upstream of Sampling Site (from NPDES) 

Facility Name County 

Permit 

Issued 

By 

Approx. 

Distance 

Upstream 

Type of 

Facility 

Pb 

Permit 

Limit 

Measured 

Values Notes 

WASTEWATER 

TREATMENT 

PLANT (I) 

KOOTENAI 

(ID) EPA 40 km 

SEWERAGE 

SYSTEMS 

No info 

on Pb 

This facility resulted in a 

query for Pb discharges, 

but no permit info for Pb 

was found. 

WASTEWATER 

TREATMENT 

PLANT (II) 

KOOTENAI 

(ID) EPA 50 km 

SEWERAGE 

SYSTEMS 

No info 

on Pb 

This facility resulted in a 

query for Pb discharges, 

but no permit info for Pb 

was found. 

HAYDEN 

AREA 

REGIONAL 

SEWER 

BOARD 

KOOTENAI 

(ID) EPA 50 km 

SEWERAGE 

SYSTEMS 

No info 

on Pb 

This facility resulted in a 

query for Pb discharges, 

but no permit info for Pb 

was found. 

3 
Appendix H 

 

ICF International H-25 DRAFT – December 2006 

1 Conclusions: Of 28 samples, 24 were below the detection limit of 1 μg/L; however, the CCC 

2 was 0.99 μg/L for the average water hardness of 36.3 mg/L as CaCO3 at this site. Thus, the 24 

3 samples are likely to be below the CCC. For the remaining four samples, the HQ for the mean 

4 concentration was 1.1, and the HQ for the maximum concentration was 1.3, both of which are 

5 relatively low. Thus, aquatic risks at this site appear to be relatively low. There are 7 facilities 

6 emitting Pb to the air within 20 km, which may be contributing to the Pb in water. There also are 

7 a few sewage systems upstream, but no metal refining facilities. 

8 

Exhibit H-11. Station 600715152572800 in Alaskaa 9 

Sampling Site Information

State – Site ID – Land Use ALASKA – 600715152572800 – Ref. 

Dissolved Pb 1 sample; 1 > CCC; HQ = 15 

Watershed – County COOK – Kenai Peninsula Borough 

Place Name Ef Ore C near Mth near Johnson Gl near Tuxedni Bay 

 

Percent Land Use Within 20 km (from NLCD 1992)b

Nearby Air Pb Emissions (from 2002 NEI)

Number of Facilities in 20 km 0 

Emissions to Air within 20 km 0 tons/year 

Number of Facilities in 50 km 0 

Emissions to Air within 50 km 0 tons/year 

Emissions in county from mobile 

and non-point sources 0.0999 tons/year a 10 There is no permit discharge information for Pb from facilities upstream of this sampling site in NPDES. b 11 NLCD land use data are not available for Alaska. According to a USGS topographic map, the area 

12 appears to be glaciers and mountains. 

13 

14 Conclusions: The single sample for dissolved Pb at this “reference” site measured 1.64 μg/L. 

15 The HQ is relatively high (15) because the CCC for Pb at this location was calculated to be 0.11 

16 μg/L due to the extremely soft water measurement (6 mg/L as CaCO3 in a single measurement). 

17 It is unknown whether the Pb in the water might come from natural sources or from the mobile 

18 and non-point sources within the county. If the Pb is from natural sources and the water is 

19 always soft, it may be that the local biota are adapted to the conditions. 

20 
Appendix H 

 

ICF International H-26 DRAFT – December 2006 

Exhibit H-12. Station 16212700 in Hawaiia 1 

Sampling Site Information

State – Site ID – Land Use HI – 16212700 – Mixed 

Dissolved Pb 2 samples; 1 < CCC; 1 > CCC; 1 HQ = 1.98 

Watershed, County OAHU, Honolulu 

Place Name Waikakalaua Stream near Wahiawa, Oahu 

 

Percent Land Use Within 20 km (Land cover for year 2000 from NOAA)b

Water 12.42% 

High Intensity Developed 4.44% 

Low Intensity Developed 7.74% 

Bare Land 1.60% 

Unconsolidated Shore 0.20% 

Evergreen Forest 19.25% 

Scrub/Shrub 35.34% 

Grassland 11.52% 

Cultivated Land 7.28% 

Palustrine Forested Wetland 0.03% 

Palustrine Scrub/Shrub Wetland 0.01% 

Palustrine Emergent Wetland 0.06% 

Estuarine Forested Wetland 0.11% 

Nearby Air Pb Emissions (from 2002 NEI)

Number of Facilities in 20 km 9 

Emissions to Air within 20 km 4.91 tons/year 

Number of Facilities in 50 km 11 

Emissions to Air within 50 km 4.91 tons/year 

Emissions in county of monitor from 

mobile and non-point sources 0.491 tons/year a 2 There is no permit discharge information for Pb from facilities upstream of this monitor in NPDES. b 3 NLCD for 1992 was not available for Hawaii. This year 2000 data set did not include mining land use. 

4 However, a 1976 land cover data set analyzed showed that 0.02 percent of the land within 20 km was strip 

5 mining. 

6 

7 Conclusions: There is an excellent chance that a major source of the dissolved Pb at this 

8 location is air deposition from the nine facilities within 20 km discharging 4.91 tons of Pb per 

9 year to the air.
Appendix H 

 

ICF International H-27 DRAFT – December 2006 

1 

2 Exhibit H-13. Station 12422000 in Washington

Sampling Site Information

State – Site ID – Land Use WA – 12422000 – Urban 

Dissolved Pb 

 20 samples; 18 < QL of 1 μg/L which is > CCC; 2 > CCC; mean 

and max HQ = 1.17 

Watershed, County NROK, Spokane 

Place Name Spokane River below Green Street at Spokane 

 

Percent Land Use Within 20 km (from NLCD 1992)

Water Open Water 0.75% 

Low Intensity Residential 13.21% 

Developed High Intensity Residential 0.17% 

Commercial/Industrial/Transportation 5.27% 

Bare Rock/Sand/Clay 0.20% Barren 

Transitional 0.71% 

Deciduous Forest 0.16% 

Forested Upland Evergreen Forest 22.33% 

Mixed Forest 0.94% 

Shrubland Shrubland 16.44% 

Non-natural Woody Orchards/Vineyards/Other 0.72% 

Herbaceous Upland Grasslands/Herbaceous 9.05% 

Pasture/Hay 12.44% 

Row Crops 0.13% 

Small Grains 8.53% 

Fallow 8.04% 

Herbaceous Planted/Cultivated 

Urban/Recreational Grasses 0.73% 

Woody Wetlands 0.06% Wetlands 

Emergent Herbaceous Wetlands 0.12% 

 

Nearby Air Pb Emissions (from 2002 NEI)

Number of Facilities in 20 km 8 

Emissions to Air within 20 km 0.411 tons/year 

Number of Facilities in 50 km 12 

Emissions to Air within 50 km 0.427 tons/year 

Emissions in county of monitor 

from mobile and non-point 

sources 0.239 tons/year 

3 

Permit Discharge Information for Facilities Upstream of Sampling Site (from NPDES)a 

Facility Name County 

Permit 

Issued 

By 

Approx. 

Distance 

Upstream 

Type of 

Facility 

Pb 

Permit 

Limit 

Measured 

Values Notes 

WASTEWATER 

TREATMENT 

PLANT (I) 

KOOTENAI 

(ID) EPA 35 km 

SEWERAGE 

SYSTEMS 

No info 

on Pb 

This facility resulted in a 

query for Pb discharges, 

but no permit info for Pb 

was found. 

WASTEWATER 

TREATMENT 

PLANT (II) 

KOOTENAI 

(ID) EPA 45 km 

SEWERAGE 

SYSTEMS 

No info 

on Pb 

This facility resulted in a 

query for Pb discharges, 

but no permit info for Pb 

was found. 
Appendix H 

 

ICF International H-28 DRAFT – December 2006 

Permit Discharge Information for Facilities Upstream of Sampling Site (from NPDES)a 

Facility Name County 

Permit 

Issued 

By 

Approx. 

Distance 

Upstream 

Type of 

Facility 

Pb 

Permit 

Limit 

Measured 

Values Notes 

HAYDEN AREA 

REGIONAL 

SEWER BOARD 

KOOTENAI 

(ID) EPA 45 km 

SEWERAGE 

SYSTEMS 

No info 

on Pb 

This facility resulted in a 

query for Pb discharges, 

but no permit info for Pb 

was found. a All facilities in Shoshone County, Idaho listed for the 12419000 sample in Idaho are also upstream of this 

monitor, but by more than 110 km. 

1 

2 Conclusions: It is possible that a major source of the dissolved Pb at this location is air 

3 deposition from the eight facilities within 20 km discharging 0.411 tons of Pb per year to the air. 

4 

5 Exhibit H-14. Station 12419000 in Idaho 

Sampling Site Information

State – Site ID – Land Use ID - 12419000 – Mixed 

Dissolved Pb 

26 samples; 16 < QL of 1.0 μg/L which is > CCC; 8 < CCC; 2 > 

CCC; mean HQ = 2.69; max HQ = 4.27 

Watershed, County NROK, Kootenai 

Place Name Spokane River near Post Falls, ID 

 

Percent Land Use Within 20 km (from NLCD 1992)

Water Open Water 4.96% 

Low Intensity Residential 4.57% 

Developed High Intensity Residential 0.01% 

Commercial/Industrial/Transportation 2.17% 

Bare Rock/Sand/Clay 0.07% Barren 

Transitional 4.62% 

Deciduous Forest 0.18% 

Forested Upland Evergreen Forest 39.54% 

Mixed Forest 5.57% 

Shrubland Shrubland 7.63% 

Non-natural Woody Orchards/Vineyards/Other 2.33% 

Herbaceous Upland Grasslands/Herbaceous 6.37% 

Pasture/Hay 10.04% 

Row Crops 0.10% 

Small Grains 5.68% 

Fallow 5.72% 

Herbaceous Planted/Cultivated 

Urban/Recreational Grasses 0.31% 

Woody Wetlands 0.05% Wetlands 

Emergent Herbaceous Wetlands 0.06% 

 

Nearby Air Pb Emissions (from 2002 NEI)

Number of Facilities in 20 km 6 

Emissions to Air within 20 km 0.342 tons/year 

Number of Facilities in 50 km 13 

Emissions to Air within 50 km 0.427 tons/year 

Emissions in county of monitor 

from mobile and non-point 

sources 0.597 tons/year 
Appendix H 

 

ICF International H-29 DRAFT – December 2006 

1 

Permit Discharge Information for Facilities Upstream of Sampling Site (from NPDES)a

Facility Name County 

Permit 

Issued 

By 

Approx. 

Distance 

Upstream 

Type of 

Facility 

Pb Permit 

Limit 

Measured 

Values Notes 

WASTEWATER 

TREATMENT 

PLANT (I) 

KOOTENAI 

(ID) EPA 3 km 

SEWERAGE 

SYSTEMS No info on Pb 

This facility 

resulted in a 

query for Pb 

discharges, but 

no permit info for 

Pb was found. 

WASTEWATER 

TREATMENT 

PLANT (II) 

KOOTENAI 

(ID) EPA 15 km 

SEWERAGE 

SYSTEMS No info on Pb 

This facility 

resulted in a 

query for Pb 

discharges, but 

no permit info for 

Pb was found. 

HAYDEN AREA 

REGIONAL 

SEWER BOARD 

KOOTENAI 

(ID) EPA 15 km 

SEWERAGE 

SYSTEMS No info on Pb 

This facility 

resulted in a 

query for Pb 

discharges, but 

no permit info for 

Pb was found. 

Coeur Silver Valley Shoshone EPA 

between 

100 and 

130 km 

Pb AND ZINC 

ORES 

max. conc.- 

1.2 mg/L 

(daily) 

avg. conc.-.6 

mg/L 

(monthly) 

max. conc.- 

.101 mg/L 

avg. conc.-

.055mg/L 

Data is for 3 

pipes (2 have 

limits, 3rd is 

ADDMON/ 

DELMON) data 

presented is 

summed for 3 

pipes. 

Hecla Mining Co. 

Lucky Friday Mine 

Unit Shoshone EPA 

between 

100 and 

130 km 

Pb AND ZINC 

ORES 

max. conc.- .4 

mg/L (daily) 

avg. conc.-. 2 

mg/L 

(monthly) 

No apparent 

Pb discharge 

Two pipes (one 

ADDMON/ 

ADDMON) no 

measurements 

of Pb discharge 

for either. 

Hecla Mining 

Company Star 

Phoenix Unit Shoshone EPA 

between 

100 and 

130 km 

Pb AND ZINC 

ORES 

max. conc.- 

1.086 mg/L 

(daily) 

avg. conc.- 

.30 mg/L 

(monthly) 

max. conc.- 

.173 mg/L 

avg. conc.-

.08mg/L 

Values reported 

are the sum of 

discharges from 

two pipes 

Smelterville, City 

of Shoshone EPA 

between 

100 and 

130 km 

SEWERAGE 

SYSTEMS 

max. quantity- 

.18 lbs/day 

avg. quantity- 

.096 lbs/day 

max conc. - 

85 μg/L (daily) 

avg. conc.- 

46 μg/L 

(monthly) 

No Pb 

discharges 

reported. 

South Fork, Coeur 

D'Alene RSD Shoshone EPA 

between 

100 and 

130 km 

SEWERAGE 

SYSTEMS 

max. quantity6.5 lbs/day 

max conc.- 

182 μg/L 

(daily) avg. 

conc.- 84 μg/L 

(monthly) 

max .quantity3.8 lbs/day 

avg. quantity3.8 lbs/day 

max conc.- 

40 μg/L 

(daily) avg. 

conc.- 40 

μg/L(monthly) 

Measured 

values recorded 

were the highest 

in the last 5 

years. 
Appendix H 

 

ICF International H-30 DRAFT – December 2006 

Permit Discharge Information for Facilities Upstream of Sampling Site (from NPDES)a

Facility Name County 

Permit 

Issued 

By 

Approx. 

Distance 

Upstream 

Type of 

Facility 

Pb Permit 

Limit 

Measured 

Values Notes 

South Fork, Coeur 

D'Alene RSD Shoshone 

 

between 

100 and 

130 km 

SEWERAGE 

SYSTEMS 

max. conc.- 

ADDMON 

avg.conc.- 

DELMON 

max. conc.- 

11.7 μg/kg 

Measured 

values recorded 

were the highest 

in the last 5 

years. 

Sunshine Mine Shoshone EPA 

between 

100 and 

130 km 

PRIMARY 

SMELTING 

AND 

REFINING OF 

NONFERROUS 

METALS, 

EXCEPT 

COPPER AND 

ALUMINUM 

max. quantity12.8 lbs/day 

avg. quantity6.4 lbs/day 

max conc.- 

.550 mg/L 

(daily) avg. 

conc.- .274 

mg/L 

(monthly) 

max. quantity4.7 lbs/day 

avg. quantity1.3 lbs/day 

max conc.- 

.241 mg/L 

(daily) avg. 

conc.- .115 

mg/L 

(monthly) 

4 pipes present, 

only one active 

measured 

values recorded 

were the highest 

in the last 5 

years. 

Sunshine Precious 

Metals Inc Shoshone EPA 

between 

100 and 

130 km SILVER ORES 

max. conc.- .6 

mg/L (daily) 

avg. conc.- 

.30 mg/L 

(monthly) 

No apparent 

Pb discharge a 1 The facilities in Shoshone County are fairly far upstream from the sample, but seemed very relevant because of 

2 their large Pb discharges. 

3 

4 Conclusions: Permitted discharges of Pb from four mining companies are likely to be the major 

5 source of dissolved Pb at this location.

6 

7 Exhibit H-15. Station 12392155 in Idaho 

Sampling Site Information

State – Site ID – Land Use ID - 12392155 – Forest 

Dissolved Pb 

17 samples; 10 < 1.0 μg/L which is > CCC; 3 < CCC; 4 > CCC; 

mean HQ = 1.32; max HQ = 1.54 

Watershed, County NROK, Bonner 

Place Name Lightning Creek at Clark Fork, ID 

 
Appendix H 

 

ICF International H-31 DRAFT – December 2006 

Percent Land Use Within 20 km (from NLCD 1992)

Water Open Water 13.27% 

Low Intensity Residential 0.17% Developed Commercial/Industrial/Transportation 0.24% 

Bare Rock/Sand/Clay 1.44% Barren 

Transitional 2.55% 

Deciduous Forest 0.10% 

Forested Upland Evergreen Forest 70.65% 

Mixed Forest 0.83% 

Shrubland Shrubland 5.05% 

Herbaceous Upland Grasslands/Herbaceous 2.96% 

Pasture/Hay 2.05% 

Small Grains 0.01% 

Fallow 0.01% 

Herbaceous Planted/Cultivated 

Urban/Recreational Grasses 0.01% 

Woody Wetlands 0.65% Wetlands 

Emergent Herbaceous Wetlands 0.00% 

 

Nearby Air Pb Emissions (from 2002 NEI)

Number of Facilities in 20 km 0 

Emissions to Air within 20 km 0 tons/year 

Number of Facilities in 50 km 1 

Emissions to Air within 50 km 0.00153 tons/year 

Emissions in county of monitor 

from mobile and non-point 

sources 0.221 tons/year 

1 

Permit Discharge Information for Facilities Upstream of Sampling Site (from NPDES)

Facility 

Name County 

Permit 

Issued 

By 

Approx. 

Distance 

Upstream 

Type of 

Facility Pb Permit Limit Measured Values Notes 

Revett 

Silver 

Company Sanders STATE 40 km 

COPPER 

ORES 

avg. quantity- .074 lbs/hr 

max conc.- .098 mg/L (daily) 

avg. conc.- .064 mg/L 

(monthly) 

No apparent 

Pb 

discharges 

2 

3 Conclusions: The only likely source of the sporadic concentrations of dissolved Pb in excess of 

4 the CCC is the copper ore facility upstream and possibly Pb emissions to air from mobile and 

5 non-point sources. This location is notable, however, for its very soft water (i.e., 8.8 mg/L as 

6 CaCO3) and, as a result, the very low CCC value (i.e., 0.17 μg/L). The measured Pb 

7 concentrations that exceed this CCC are relatively low (0.185 to 0.261 μg/L). Whether EPA’s 

8 equation for relating the CCC to water hardness is valid at this extreme value of water hardness 

9 (i.e., the lowest water hardness in the data set used to develop the CCC equation was 20 mg/L as 

10 CaCO3 [USEPA 1984]) is unknown.

11 
Appendix H 

 

ICF International H-32 DRAFT – December 2006 

1 Exhibit H-16. Station 1127000 in Connecticut 

Sampling Site Information

State – Site ID – Land Use CT - 1127000 – Mixed 

Dissolved Pb 

22 samples; 14 < QL of 1 μg/L which > CCC; 4 < CCC; 4 > CCC; 

mean HQ = 1.13; max HQ = 1.54 

Watershed, County CONN, New London 

Place Name Quinebaug River at Jewett City, CT 

 

Percent Land Use Within 20 km (from NLCD 1992) 

Water Open Water 2.08% 

Low Intensity Residential 4.14% 

Developed High Intensity Residential 0.28% 

Commercial/Industrial/Transportation 1.81% 

Bare Rock/Sand/Clay 0.24% 

Barren Quarries/Strip Mines/Gravel Pits 0.11% 

Transitional 0.41% 

Forested Upland Deciduous Forest 51.79% 

Evergreen Forest 3.05% Mixed Forest 12.79% 

Shrubland Shrubland 0.04% 

Non-natural Woody Orchards/Vineyards/Other 0.07% 

Pasture/Hay 7.58% 

Herbaceous Planted/Cultivated Row Crops 5.32% 

Urban/Recreational Grasses 2.27% 

Woody Wetlands 5.94% Wetlands 

Emergent Herbaceous Wetlands 2.08% 

 

Nearby Air Pb Emissions (from 2002 NEI) 

Number of Facilities in 20 km 4 

Emissions to Air within 20 km 6.11 tons/year 

Number of Facilities in 50 km 57 

Emissions to Air within 50 km 6.97 tons/year 

Emissions in county of monitor 

from mobile and non-point 

sources 0.139 tons/year 

2 

Permit Discharge Information for Facilities Upstream of Sampling Site (from NPDES) 

Facility Name County 

Permit 

Issued 

By 

Approx. 

Distance 

Upstream 

Type of 

Facility 

Pb Permit 

Limit 

Measured 

Values Notes 

Jewett City WPCA 

New 

London STATE 

approx 

same 

location 

SEWERAGE 

SYSTEMS 

max. conc.- 

ADDMON 

avg. conc.- 

DELMON 

max. 

conc.- 43 

mg/kg 

Measured values 

recorded were the 

highest in the last 5 

years. 

Plainfield Village Stp Windham STATE 10 km 

SEWERAGE 

SYSTEMS 

max. conc.- 

ADDMON 

avg. conc.- 

DELMON 

max. 

conc.- 127 

mg/kg 

Measured values 

recorded were the 

highest in the last 5 

years. 
Appendix H 

 

ICF International H-33 DRAFT – December 2006 

Permit Discharge Information for Facilities Upstream of Sampling Site (from NPDES) 

Facility Name County 

Permit 

Issued 

By 

Approx. 

Distance 

Upstream 

Type of 

Facility 

Pb Permit 

Limit 

Measured 

Values Notes 

BST Systems Windham STATE 11 km 

max. quantity- 

.628 g/day 

avg. quantity- 

.299 g/day 

max conc.- 

.166mg/L 

(daily) avg. 

conc.- 

.079mg/L 

(monthly) 

max 

quantity- 

.095g/day 

avg. 

quantity- 

<.056 

g/day 

Measured values 

recorded were the 

highest in the last 5 

years. 

Plainfield North 

Water Pollution 

Control Facility Windham STATE 15 km 

SEWERAGE 

SYSTEMS 

max. conc.- 

ADDMON 

avg. conc.- 

DELMON 

max. 

conc.- 34.5 

mg/kg 

Measured values 

recorded were the 

highest in the last 5 

years. 

Killingly WPCF Town 

of Windham STATE 25 km 

SEWERAGE 

SYSTEMS 

max. conc.- 

ADDMON 

avg. conc.- 

DELMON 

max. 

conc.- 149 

mg/kg 

Measured values 

recorded were the 

highest in the last 5 

years. 

Delta Rubber 

Company Windham STATE 25 km 

SPECIAL 

INDUSTRY 

MACHINERY, 

NOT 

ELSEWHERE 

CLASSIFIED 

max. quantity32.3 g/day 

avg. quantity10.7 g/day 

max conc.- .5 

mg/L (daily) 

avg. conc.- .1 

mg/L (monthly) 

max. 

quantity- .2 

g/day 

avg. 

quantity- .2 

g/day 

max 

conc.- .002 

mg/L 

(daily) 

avg. 

conc.- 

.079mg/L 

(monthly) 

Measured values 

recorded were the 

highest in the last 5 

years. 

Exeter Energy 

Limited Partnership Windham STATE 25 km 

ELECTRIC 

SERVICES 

max. conc.- 

ADDMON 

avg. conc.- 

OPTMON 

max. 

conc.- 

.27mg/L 

avg. conc.- 

.1363 mg/L 

Measured values 

recorded were the 

highest in the last 5 

years. 

Frito Lay 

Incorporated Windham STATE 

between 

30 and 50 

km No info on Pb 

This facility resulted in a 

query for Pb discharges, 

but no permit info for Pb 

was found. 

Lake Road 

Generating Co L.P. Windham 

STATE between 

30 and 50 

km 

 

max. conc.- .5 

mg/L (daily) 

avg. conc.- .1 

mg/L (daily) 

max. 

conc.- 

.052 mg/L 

avg. conc.- 

.041 mg/L 

Measured values 

recorded were the 

highest in the last 5 

years. 

National Chromium 

Company Inc Windham 

STATE between 

30 and 50 

km 

max. conc.- .5 

mg/L (daily) 

avg. conc.- .1 

mg/L (daily) 

max. 

conc.- 

.019 mg/L 

avg. conc.- 

.0071 mg/L 

Measured values 

recorded were the 

highest in the last 5 

years. 

Putnam Water 

Pollution Control 

Facility Windham STATE 

between 

30 and 50 

km 

SEWERAGE 

SYSTEMS 

max. conc.- 

ADDMON 

avg. conc.- 

DELMON 

max. 

conc.- 49 

mg/kg 

Measured values 

recorded were the 

highest in the last 5 

years. 
Appendix H 

 

ICF International H-34 DRAFT – December 2006 

Permit Discharge Information for Facilities Upstream of Sampling Site (from NPDES) 

Facility Name County 

Permit 

Issued 

By 

Approx. 

Distance 

Upstream 

Type of 

Facility 

Pb Permit 

Limit 

Measured 

Values Notes 

Rogers Corporation Windham STATE 

between 

30 and 50 

km 

FLOOR 

LAYING AND 

OTHER 

FLOOR 

WORK, NOT 

ELSEWHERE 

CLASSIFIED 

max. conc.- 

ADDMON 

avg. conc.- 

ADDMON 

max. 

conc.- .001 

mg/L 

avg. conc.-

.001 mg/L 

Measured values 

recorded were the 

highest in the last 5 

years. 

Thompson WPCF Windham STATE 

between 

30 and 50 

km 

SEWERAGE 

SYSTEMS 

max. conc.- 

ADDMON 

avg. conc.- 

DELMON 

max. 

conc.- .93 

mg/L 

Measured values 

recorded were the 

highest in the last 5 

years. 

U.S. Button 

Corporation Windham STATE 

between 

30 and 50 

km 

max. quantity- 

.340 g/day 

avg. quantityDELMON 

max. conc.- 

.690 mg/L 

(daily) 

avg. conc.- 

DELMON 

No measurements 

presented for Pb levels. 

Wheelabrator 

Putnam Inc Windham STATE 

between 

30 and 50 

km 

max. conc.- 

ADDMON 

avg. conc.- 

DELMON 

max. 

conc.- .320 

mg/L 

Measured values 

recorded were the 

highest in the last 5 

years. 

1 

2 Conclusions: It is possible that one major source of the dissolved Pb at this location is air 

3 deposition from the 4 facilities within 20 km discharging 6.11 tons of Pb per year to the air. 

4 However, there also are many sewerage systems and industries with permitted discharges of Pb 

5 upstream of this sampling location, including one discharge essentially at this location from the 

6 Jewett City WPCA. 

7 

8 Exhibit H-17. Station 1124000 in Connecticut 

Sampling Site Information

State – Site ID – Land Use CT - 1124000 - Mixed 

Dissolved Pb 

23 samples; 9 < QL of 1 μg/L which is > CCC; 3 < CCC; 11 > CCC; mean 

HQ = 2.53; max HQ = 3.33 

Watershed, County CONN, Windham 

Place Name Quinebaug River at Quinebaug, CT 

 
Appendix H 

 

ICF International H-35 DRAFT – December 2006 

Percent Land Use Within 20 km (from NLCD 1992) 

Water Open Water 3.86% 

Low Intensity Residential 4.55% 

Developed High Intensity Residential 0.33% 

Commercial/Industrial/Transportation 1.98% 

Bare Rock/Sand/Clay 0.25% 

Barren Quarries/Strip Mines/Gravel Pits 0.09% 

Transitional 0.33% 

Deciduous Forest 41.39% 

Forested Upland Evergreen Forest 5.39% 

Mixed Forest 20.29% 

Shrubland Shrubland 0.07% 

Non-natural Woody Orchards/Vineyards/Other 0.12% 

Pasture/Hay 5.76% 

Herbaceous Planted/Cultivated Row Crops 5.26% 

Urban/Recreational Grasses 1.30% 

Woody Wetlands 6.81% Wetlands 

Emergent Herbaceous Wetlands 2.21% 

 

Nearby Air Pb Emissions (from 2002 NEI) 

Number of Facilities in 20 km 8 

Emissions to Air within 20 km 0.0809 tons/year 

Number of Facilities in 50 km 161 

Emissions to Air within 50 km 11.3 tons/year 

Emissions in county of monitor 

from mobile and non-point sources 0.0924 tons/year 

1 

Permit Discharge Information for Facilities Upstream of Sampling Site (from NPDES) 

Facility Name County 

Permit 

Issued 

By 

Approx. 

Distance 

Upstream 

Type of 

Facility 

Pb 

Permit 

Limit 

Measured 

Values Notes 

Sturbridge 

Water Pollution 

Control Facility Worcester EPA 15 km 

SEWERAGE 

SYSTEMS 

No info 

on Pb 

This facility resulted in a 

query for Pb discharges, 

but no permit info for Pb 

was found. 

2 

3 Conclusions: Although there are 8 facilities emitting Pb to air within 20 km of this sampling 

4 location, the total annual Pb emissions are only 0.081 tons per year; however, considering a 50 

5 km radius, there are 161 facilities emitting a total of 11.3 tons of Pb to the air per year. Other 

6 possible sources of Pb nearby appear to be relatively minor (e.g., only one facility with an 

7 NPDES permit that might include Pb upstream, relatively low emissions from non-point and 

8 mobile sources). This location is notable for its soft water (14.8 mg/L as CaCO3) and low CCC 

9 value (0.30 μg/L). The measured Pb concentrations that exceed this CCC are relatively low (1 

10 μg/L or lower). 

11 
Appendix H 

 

ICF International H-36 DRAFT – December 2006 

1 Exhibit H-18. Station 1119375 in Connecticut 

Sampling Site Information

State – Site ID – Land Use CT - 1119375 – Mixed 

Dissolved Pb 

 20 samples; 13 < QL of 1 μg/L which is > CCC; 2 < CCC; 5 > 

CCC; mean HQ = 1.68; max HQ = 2.09 

Watershed, County CONN, Tolland 

Place Name WILLIMANTIC R AT MERROW, CT 

 

Percent Land Use Within 20 km (from NLCD 1992) 

Water Open Water 1.79% 

Low Intensity Residential 7.49% 

High Intensity Residential 0.60% 

Developed Commercial/Industrial/Transportation 2.05% 

Bare Rock/Sand/Clay 0.24% 

Quarries/Strip Mines/Gravel Pits 0.07% 

Barren Transitional 0.30% 

Deciduous Forest 47.55% 

Evergreen Forest 2.49% 

Forested Upland Mixed Forest 14.09% 

Shrubland Shrubland 0.05% 

Non-natural Woody Orchards/Vineyards/Other 0.07% 

Pasture/Hay 5.65% 

Row Crops 7.20% 

Herbaceous Planted/Cultivated Urban/Recreational Grasses 2.11% 

Woody Wetlands 5.95% 

Wetlands Emergent Herbaceous Wetlands 2.31% 

 

Nearby Air Pb Emissions (from 2002 NEI) 

Number of Facilities in 20 km 3 

Emissions to Air within 20 km 0.68 tons/year 

Number of Facilities in 50 km 57 

Emissions to Air within 50 km 13.7 tons/year 

Emissions in county of monitor 

from mobile and non-point 

sources 0.0139 tons/year 

2 

Permit Discharge Information for Facilities Upstream of Sampling Site (from NPDES) 

Facility Name County 

Permit 

Issued 

By 

Approx. 

Distance 

Upstream 

Type of Facility Pb Permit 

Limit 

Measured 

Values Notes 

T.A. Operating 

Corporation Tolland STATE 11 km 

COURIER 

SERVICES, 

EXCEPT BY AIR 

max. conc.- 

ADDMON 

avg/conc.- 

DELMON 

max. conc.- 

.0109 mg/L 

Measured 

values recorded 

were the highest 

in the last 5 

years. 

Stafford/WPCF Tolland STATE 17 km 

SEWERAGE 

SYSTEMS 

max. 

quantity- 

.159 kg/day 

avg. 

quantity- 

.07 kg/day 

max. 

quantity- 

.39 kg/day 

avg. 

quantity- 

.18 kg/day 

Measured 

values recorded 

were the highest 

in the last 5 

years. 
Appendix H 

 

ICF International H-37 DRAFT – December 2006 

Permit Discharge Information for Facilities Upstream of Sampling Site (from NPDES) 

Facility Name County 

Permit 

Issued 

By 

Approx. 

Distance 

Upstream 

Type of Facility Pb Permit 

Limit 

Measured 

Values Notes 

Tyco Printed 

Circuit Group LP Tolland STATE 18 km 

max. conc.- 

.20 mg/L 

avg. conc.- 

.10 mg/L 

No 

apparent 

Pb 

discharge 

Tyco Printed 

Circuit Group 

Stafford Division Tolland STATE 18 km 

max. conc.- 

.70 mg/L 

avg. conc.- 

.20 mg/L 

max. conc.- 

.0392 mg/L 

avg. conc.- 

.0192 mg/L 

Values were 

summed for two 

pipes. 

Warren 

Corporation Tolland STATE 18 km 

max. conc.- 

.50 mg/L 

avg. conc.- 

.10 mg/L 

No 

apparent 

Pb 

discharge 

1 

2 Conclusions: It is possible that one major source of dissolved Pb at this location is air emissions 

3 deposition from the 3 facilities within 20 km emitting 0.68 tons of Pb per year to the air. 

4 Considering a 50 km radius around the sampling site instead, there are a total of 57 facilities 

5 emitting a total of 13.7 tons of Pb per year to the air, which is relatively high. There are also 

6 several NPDES permitted discharges upstream of the site. 

7 
Appendix H 

 

ICF International H-38 DRAFT – December 2006 

Exhibit H-19. Station 385240106583600 in Coloradoa 1 

Sampling Site Information

State – Site ID – Land Use CO – 385240106583600– Other/Mixed 

Dissolved Pb 

 4 samples; 2 < QL of 1 μg/L which is > CCC; 1 < CCC; 1 > CCC; 

HQ = 1.09 

Watershed, County UCOL, Gunnison 

Place Name Slate River above Coal Creek near Crested Butte 

 

Percent Land Use Within 20 km (from NLCD 1992) 

Open Water 0.12% Water 

Perennial Ice/Snow 1.49% 

Low Intensity Residential 0.13% 

Developed High Intensity Residential 0.01% 

Commercial/Industrial/Transportation 0.05% 

Bare Rock/Sand/Clay 9.20% Barren 

Transitional 0.02% 

Deciduous Forest 16.66% 

Forested Upland Evergreen Forest 32.66% 

Mixed Forest 1.25% 

Shrubland Shrubland 5.35% 

Herbaceous Upland Grasslands/Herbaceous 31.00% 

Pasture/Hay 1.94% 

Row Crops 0.11% 

Small Grains 0.01% 

Herbaceous Planted/Cultivated 

Urban/Recreational Grasses 0.00% 

 

Nearby Air Pb Emissions (from 2002 NEI) 

Number of Facilities in 20 km 0 

Emissions to Air within 20 km 0 tons/year 

Number of Facilities in 50 km 1 

Emissions to Air within 50 km 2.86E-04 tons/year 

Emissions in county of monitor 

from mobile and non-point 

sources 0.0355 tons/year 

 a 2 There is no permit discharge information for Pb from facilities upstream of this monitor in NPDES. 

3 

4 Conclusions: The aquatic risks at this location appear to be minimal, with only one measurement 

5 of dissolved Pb that exceeded the CCC and an HQ of 1.09. There are no obvious sources of Pb 

6 to this location, other than the possibly natural sources and mobile and non-point sources in the 

7 county. 

8 
Appendix H 

 

ICF International H-39 DRAFT – December 2006 

1 Exhibit H-20. Station 404847111240501 in Utah 

Sampling Site Information

State – Site ID – Land Use UT – 404847111240501 – Rangeland 

Dissolved Pb 2 samples; 1 < CCC; 1 > CCC; HQ = 1.45 

Watershed, County GRSL, Summit 

Place Name Silver Creek at Wanship, UT 

 

Percent Land Use Within 20 km (from NLCD 1992)

Water 

Open Water 0.72% 

Low Intensity Residential 0.29% Developed Commercial/Industrial/Transportation 0.53% 

Bare Rock/Sand/Clay 0.03% Barren 

Quarries/Strip Mines/Gravel Pits 0.06% 

Deciduous Forest 22.77% 

Forested Upland Evergreen Forest 20.52% 

Mixed Forest 8.37% 

Shrubland Shrubland 32.93% 

Non-natural Woody Orchards/Vineyards/Other 0.00% 

Herbaceous Upland Grasslands/Herbaceous 8.63% 

Pasture/Hay 4.73% 

Herbaceous Planted/Cultivated Small Grains 0.00% 

Urban/Recreational Grasses 0.23% 

Woody Wetlands 0.00% Wetlands 

Emergent Herbaceous Wetlands 0.17% 

 

Nearby Air Pb Emissions (from 2002 NEI)

Number of Facilities in 20 km 0 

Emissions to Air within 20 km 0 tons/year 

Number of Facilities in 50 km 27 

Emissions to Air within 50 km 0.358 tons/year 

Emissions in county of monitor 

from mobile and non-point 

sources 0.108 tons/year 

2 

Permit Discharge Information for Facilities Upstream of Sampling Site (from NPDES) 

Facility 

Name County 

Permit 

Issued 

By 

Approx. 

Distance 

Upstream 

Type of Facility Pb Permit Limit Measured Values Notes 

Gear 

Systems 

Incorporated Summit STATE 13 km 

ELECTROPLATING, 

PLATING, 

POLISHING, 

ANODIZING, AND 

COLORING 

max conc. 

(daily)- 1.38 

mg/L avg. conc. 

(monthly)-.86 

mg/L 

Pipe 001- 

<.007mg/L (per 

day); Pipe 002- 

Max seen (per 

day)- .14 mg/L 

Limit levels are 

summed for 2 

pipes (each have 

equal limit levels). 

3 

4 Conclusions: It appears unlikely that air emissions are a major source of Pb at this location; it 

5 may be that the Pb discharges from the NPDES-permitted facility 13 km upstream of this site is 

6 the source of most of the Pb to this location. 

7 
Appendix H 

 

ICF International H-40 DRAFT – December 2006 

1 References 

2 

3 Multi-Resolution Land Characteristics (MRLC) Consortium. (1992) 1992 National Land Cover 

4 Dataset. U.S. Department of the Interior, U.S. Geological Survey. Available at 

5 http://www.mrlc.gov/index.asp 

6 

7 U.S. Environmental Protection Agency (USEPA). (1984) Ambient Water Quality Criteria for 

8 Lead - 1984. Washington, DC: Office of Water Regulations and Standards, Criteria and 

9 Standards Division. EPA 440/5-B4-027. Available at 

10 http://yosemite.epa.gov/water/owrccatalog.nsf/065ca07e299b464685256ce50075c11a/05edf009d

11 cde1d7d85256b060072307e!OpenDocument 

12 

13 U.S. Environmental Protection Agency (USEPA). (2006) 2002 National Emissions Inventory 

14 Data & Documentation, Final Version 1 Release. February. Available at 

15 http://www.epa.gov/ttn/chief/net/2002inventory.html 
 

Appendix I 

Input Parameter Values Used in the Blood Pb Modeling 
 
 Appendix I 

 

ICF International I-1 DRAFT – December 2006

This appendix includes a discussion of the Integrated Exposure Uptake Biokinetic Model 

for Children (hereafter referred to as the IEUBK model) and the International 

Commission for Radiation Protection (ICRP) model (hereafter referred to as the Leggett 

model). The IEUBK and Leggett models (USEPA 1994 and Leggett 1993) were used to 

calculate geometric mean blood Pb concentrations for children living in each of the 

census blocks or block groups included in the case studies. Detailed tables of the inputs 

used in the IEUBK and Leggett models are included in this Appendix. Policy-relevant 

exposure concentration inputs to the models included time-averaged air Pb levels and 

estimated soil and house dust Pb concentrations. Derivation of exposure concentration 

estimates were described in Chapter 4 and tabulated in Appendix F. See Chapter 5 for a 

more detailed discussion of the structure of the IEUBK and Leggett models. 
 Appendix I 

 

ICF International I-2 DRAFT – December 2006

I.1 IEUBK Model 

In addition to exposure concentrations and dietary Pb intake/uptake values, the IEUBK model 

requires a range of input parameter values that characterize the relationships between Pb 

exposure, intake, and uptake (absorbed dose). These values serve as inputs to equations that 

calculate Pb absorption from the various exposed media into the blood/extracellular fluid 

compartment of the model. Exhibit I-1 provides values for all of the parameters that were used 

in the IEUBK model for the three case studies. The derivation of these values is also discussed 

in Section 5.1.4. 

Exhibit I-1. Input Parameter Values for the IEUBK Model 

Parameter Value 

IEUBK Default Age Ranges (Years)

Parameter 

IEUBK 

Parameter 

Name 

0.5 to 1 

1 to 2 2 to 3 3 to 4 4 to 5 5 to 6 6 to 7 

Basis/Derivation 

Inhalation 

Daily 

ventilation rate 

(m3/day) 

Ventilation 

rate 4 5.1 6 6.8 7.8 8.8 10 

ICRP (2002), with 

interpolation for 

intermediate ages. 

Absolute 

inhalation 

absorption 

fraction 

(unitless) 

Lung 

absorption 

0.42 (Primary, secondary smelter), 0.32 (Near 

Roadway Urban) 

Smelter value: USEPA 

(1989), Appendix A 

IEUBK value: USEPA 

(1989), central tendency 

value from analysis of 

deposition data. 

Indoor air Pb 

concentration 

Indoor air Pb 

concentration 

(percentage of 

outdoor) 

100% 

Time spent 

outdoors 

Time spent 

outdoors 

(hours/day) 

Not used 

Time spent 

indoors/outdoors is not 

considered because the 

input air concentrations are 

already long-term weighted 

averages of indoor and 

outdoor concentrations. 
 Appendix I 

 

ICF International I-3 DRAFT – December 2006

Exhibit I-1. Input Parameter Values for the IEUBK Model 

Parameter Value 

IEUBK Default Age Ranges (Years)

Parameter 

IEUBK 

Parameter 

Name 

0.5 to 1 

1 to 2 2 to 3 3 to 4 4 to 5 5 to 6 6 to 7 

Basis/Derivation 

Drinking Water Ingestion 

Water 

consumption 

(L/day) 

Water 

consumption 

(L/day) 

0.34 0.31 0.31 0.33 0.36 0.39 0.42 

Based on value for infants, 

1 to 3 yr olds, 1 to10 yr olds 

(with trend lines used to 

interpolate intermediate age 

ranges) (USEPA 2002). 

Water Pb 

concentration 

(μg/L) 

Pb 

concentration 

in drinking 

water (μg/L) 

4.61 

GM of values reported in 

studies of United States and 

Canadian populations 

(residential water) (Moir et 

al. 1996, Clayton et al. 

1999, as cited in USEPA 

(2006), Section 3.3 Table 3-

10). 

Absolute 

absorption 

(unitless) 

 

Total percent 

accessible 50% (Single value used across all age ranges) 

Assumed similar to dietary 

absorption (see "Total 

percent accessible" under 

Ingestion-Diet below). 

Other drinking 

water 

parameters 

First-draw, 

flushed 

drinking water 

concentrations 

Not used 

Water Pb concentration 

assumed to be 

representative of children’s 

Pb intake. 

Diet 

Dietary Pb 

intake (μg/day) 

Daily Pb 

intake 

(μg/day) 

3.16 2.6 2.87 2.74 2.61 2.74 2.99 

Estimates based on (a) Pb 

food residue data from U.S. 

Food and Drug 

Administration Total Diet 

Study (USFDA 2001), and 

(b) food consumption data 

from NHANES III (CDC 

1997). 

Absolute 

absorption 

(unitless) 

Total percent 

accessible 50% 

Alexander et al. (1974) and 

Ziegler et al. (1978), as 

cited in USEPA 2006 

(Section 4.2.1). These two 

dietary balance studies 

suggest that 40-50% of 

ingested Pb is absorbed by 

children (2 weeks to 8 years 

of age). 

Other diet 

parameters 

Use 

alternative 

dietary 

values? 

No Daily Pb intake is assumed 

to include all food groups. 
 Appendix I 

 

ICF International I-4 DRAFT – December 2006

Exhibit I-1. Input Parameter Values for the IEUBK Model 

Parameter Value 

IEUBK Default Age Ranges (Years)

Parameter 

IEUBK 

Parameter 

Name 

0.5 to 1 

1 to 2 2 to 3 3 to 4 4 to 5 5 to 6 6 to 7 

Basis/Derivation 

Soil/Indoor Dust Ingestion 

Soil/dust 

weighting 

factor 

(unitless) 

Soil/dust 

ingestion 

weighting 

factor (percent 

soil) 

45% 

This is the percent of total 

ingestion that is soil. Value 

reflects best judgment and 

consideration (results 

published by van Wijnen et 

al. (1990), as cited in 

(USEPA 1989). The van 

Wijnen et al. study looked at 

tracer studies of ingestion 

rates for rainy days and non 

–rainy days. It was 

assumed that rainy days 

were associated with all soil 

ingestion and non-rainy 

days were associated with a 

combination of soil and dust 

with the delta representing 

soil. 

Total dust + 

soil ingestion 

(mg/day) 

Amount of 

soil/dust 

ingested daily 

(mg) 

85 135 135 135 100 90 85 

USEPA 1989, which was 

based on multiple studies 

focusing on children. 
 Appendix I 

 

ICF International I-5 DRAFT – December 2006

Exhibit I-1. Input Parameter Values for the IEUBK Model 

Parameter Value 

IEUBK Default Age Ranges (Years)

Parameter 

IEUBK 

Parameter 

Name 

0.5 to 1 

1 to 2 2 to 3 3 to 4 4 to 5 5 to 6 6 to 7 

Basis/Derivation 

Soil/Indoor Dust Ingestion (Continued) 

Absolute 

gastrointestinal 

absorption 

(soil and dust) 

(unitless) 

Total percent 

accessible 

· Primary Pb smelter case study: 0.48 for soil 

and 0.26 for dust 

· Secondary Pb smelter and near roadway: 

0.30 for both soil and dust 

· Site specific absorption 

factors for soil and indoor 

dust were derived for the 

primary Pb smelter case 

study using relative 

bioavailability (RBA) 

estimates generated based 

on swine studies involving 

soil and dust samples 

collected in the study area 

(Casteel et al. 2005). 

These RBAs were 

converted to absolute 

bioavailability factors (i.e., 

total percent accessible 

values) by applying the 

absolute bioavailability 

factor for the control 

material (Pb acetate water 

solution also fed to the 

animals). 

· Secondary Pb smelter and 

near roadway values: 

USEPA (1989) reflects 

evidence that Pb in dust 

and soil is as accessible as 

dietary Pb and that dust/soil 

ingestion may occur away 

from mealtimes (resulting in 

enhanced absorption 

relative to exposure during 

meal events). 

Other soil/dust 

ingestion 

parameters 

Multiple 

source 

analysis 

No 

Soil and house dust 

concentrations were 

modeled external to the 

IEUBK model. 

Other 

Maternal blood 

Pb (μg/dL) 

Maternal 

blood Pb 

concentration 

at childbirth, 

μg/dL 

1.94 

NHANES IV, national GM 

for adult women – all 

nationalities (CDC 2004). 

Fraction 

passive/total 

accessible 

Passive-active 20 

uptake 

parameters Half saturation 

level, μg/day 100 

IEUBK default values were 

used. 
 Appendix I 

 

ICF International I-6 DRAFT – December 2006

I.2 Leggett Model 

The Visual Basic® adaptation of the Leggett model includes a multi-pathway intake and uptake 

module as described in Section 5.1.3.3. The following policy-relevant exposure concentrations 

are read from a spreadsheet into the model and serve as the basis for calculating concurrent and 

lifetime average blood Pb concentrations for each block level or block group: 

• BRETH (modeled inhalation exposure concentration); 

• SOILPB (soil dust Pb concentration); and 

• DUSTPB (house dust Pb concentration). 

The Leggett concentration input/output spreadsheet served as the input sheet for the probabilistic 

blood Pb and IQ model. After concurrent and lifetime average blood Pb concentrations were 

calculated for each block group, the values were output back into the appropriate rows of the 

spreadsheet and used in the Monte Carlo simulation to generate blood Pb and IQ distributions. 

In addition to exposure concentrations, the Leggett model also accepts essentially the same set of 

input parameters as those used in the IEUBK model. The intention was to have the Pb uptake 

(absorbed dose) calculated by the Leggett model for each age group equal to the Pb uptake 

calculated by the IEUBK model for the same age group, given the same set of exposure 

concentrations. A section of a Leggett model input parameter spreadsheet is shown in Exhibit I2. Most of the parameters take the same values as the analogous IEUBK inputs shown in Exhibit 

I-1. One difference is that the age-specific inputs in the Leggett model are stratified into 

narrower age ranges than the IEUBK values. In the batch version of the Leggett model, input 

values are defined for age ranges 0 to 100 days (0.274 years), 100 days to 6 months, and then 

values are specified every tenth of a year through the age of 5 years, when the stratification 

reverts to 0.25 years per age group. This stratification was originally intended to provide a 

smoother transition between age groups with regard to biokinetic parameter values, especially in 

younger children. However, in the current version of the model, exposure parameters for each 

age range are set at the identical (or equivalent) values as those used in the IEUBK runs, in order 

to match absorbed dose estimates as closely as possible, at the expense of some discontinuities in 

the output blood Pb profiles. 

The variables included in the Leggett input parameter spreadsheet that use the same age-specific 

values as shown in Exhibit I-1 for the IEUBK model are: 

• CHAGE (age ranges); 

• AFI (dietary absorption fractions); 

• H2OAF (gastrointestinal absorption fractions); 

• EAT (background dietary Pb intake estimates); 

• H20CONC (drinking water concentration); 

• RESVOL (age-specific respiratory volumes); and 

• AFLUNG (absorption fraction for inhalation exposure). 
 Appendix I 

 

ICF International I-7 DRAFT – December 2006

The variables listed below are included in the Leggett input parameter spreadsheet, but are 

handled somewhat differently in the IEUBK model: 

• SOILING (estimated daily soil ingestion rate); 

• DUSTING (estimated daily dust ingestion rate); 

• SOILBIO (soil bioavailability); 

• DUSTBIO (dust bioavailability); 

• SOILAF (gastrointestinal absorption fraction value for soil); and 

• DUSTAF (gastrointestinal absorption fraction value for dust). 

SOILING and DUSTING are calculated in the input parameter spreadsheet from the 

corresponding IEUBK inputs relating to total dust + soil ingestion and the soil/dust weighting 

factor. The Leggett model includes SOILBIO, DUSTBIO, SOILAF, and DUSTAF parameters. 

In contrast, the IEUBK model characterizes Pb absorption from ingested soil and dust on the 

basis of one parameter (Total Percent Available). In Exhibit I-2, SOILBIO and DUSTBIO have 

been set to 1.0 (100 percent) and the SOILAF and DUSTAF have been set to 0.3 (30 percent) to 

match the IEUBK “Total Percent Available” input value of 30 percent, even though 100 percent 

bioavailability from soil and dust is unlikely. The SOILAF and DUSTAF values, while they can 

be varied with age, are held constant at 0.30 across all age groups (the input file extracted in 

Exhibit I-2 is from the secondary Pb smelter case study). SOILBIO and DUSTBIO values are 

not treated as age-specific in the batch Leggett model. 

The input parameter spreadsheet also includes the same estimated maternal blood Pb 

concentration as is used in the IEUBK modeling (1.94 μg/dL) and the default maternal-fetal 

blood Pb ratio specified in the Leggett code. The spreadsheet also includes model inputs related 

to the use of a non-linear (saturable) model for red blood cell Pb absorption, which is analogous 

to the saturable uptake model in the IEUBK model. The non-linear blood Pb model parameter 

values in Exhibit I-2 are the defaults by Leggett (1993). 

During this analysis, it was found that the form of the red blood cell model that is specified 

makes very little difference to the predicted blood Pb profiles, given the relatively low blood Pb 

intakes predicted for almost all exposed children in the case studies. 
0 0.274 0.5 0.6 0.7 

AFI Ingestion absorption fraction (absolute) 0.5 0.5 0.5 0.5 0.5 

RESVOL Respiratory volume (m3/day) 44444

AFLUNG Inhalation absorption fraction (absolute) 0.42 0.42 0.42 0.42 0.42 

CHR Direct intake to bloodstream (μg/day) 00000

BRETH Air concentration (μg/m3

) 0.05 0.05 0.05 0.05 0.05 

EAT Pb content in non-water diet (μg/day) 3.16 3.16 3.16 3.16 3.16 

H20CONS Water consumption (L/day) 0.34 0.34 0.34 0.34 0.34 

H20CONC Pb concentration in drinking water (μg/L) 4.61 4.61 4.61 4.61 4.61 

H20AF Absorption fraction for drinking water (abs) 0.5 0.5 0.5 0.5 0.5 

DUSTING Household dust ingestion (g/day) 0.04675 0.04675 0.04675 0.04675 0.04675 0

DUSTAF Dust absorption fraction (relative to soluble) 0.3 0.3 0.3 0.3 0.3 

DUSTPB Dust Pb concentration (μg/g) 00000SOILING Soil ingestion (g/day) 0.03825 0.03825 0.03825 0.03825 0.03825 0

SOILAF Soil absorption fraction (relative to soluble) 0.3 0.3 0.3 0.3 0.3 

SOILPB Soil Pb concentration (μg/g) 00000

SOILBIO Soil bioavailability 11111

DUSTBIO Dust bioavailability 11111

IFETAL Flag to include fetal exposure 11111

BLDMOT Maternal blood Pb (μg/dL) 1.94 1.94 1.94 1.94 1.94 

BRATIO Ratio of maternal to fetal blood 0.85 0.85 0.85 0.85 0.85 

IRBC Use non-linear RBC model 11111

RBCNL Non-linear RBC model threshold (μg/day) 60 60 60 60 60 

SATRAT Non-linear RBC model coefficient 350 350 350 350 350 

POWER Non-linear RBC model power 1.5 1.5 1.5 1.5 1.5 

Exhibit I-2. Example Leggett Model Input Parameters

Biokinetic Input Parameters by Age Endpoints 

Parameter Description (years)

ICF International I-8 
1 1.1 1.2 1.3 1.4 

AFI Ingestion absorption fraction (absolute) 0.5 0.5 0.5 0.5 0.5 

RESVOL Respiratory volume (m3/day) 5.1 5.1 5.1 5.1 5.1 

AFLUNG Inhalation absorption fraction (absolute) 0.42 0.42 0.42 0.42 0.42 

CHR Direct intake to bloodstream (μg/day) 00000

BRETH Air concentration (μg/m3

) 0.05 0.05 0.05 0.05 0.05 

EAT Pb content in non-water diet (μg/day) 2.6 2.6 2.6 2.6 2.6 

H20CONS Water consumption (L/day) 0.31 0.31 0.31 0.31 0.31 

H20CONC Pb concentration in drinking water (μg/L) 4.61 4.61 4.61 4.61 4.61 

H20AF Absorption fraction for drinking water (abs) 0.5 0.5 0.5 0.5 0.5 

DUSTING Household dust ingestion (g/day) 0.07425 0.07425 0.07425 0.07425 0.07425 

DUSTAF Dust absorption fraction (relative to soluble) 0.3 0.3 0.3 0.3 0.3 

DUSTPB Dust Pb concentration (μg/g) 00000

SOILING Soil ingestion (g/day) 0.06075 0.06075 0.06075 0.06075 0.06075 

SOILAF Soil absorption fraction (relative to soluble) 0.3 0.3 0.3 0.3 0.3 

SOILPB Soil Pb concentration (μg/g) 00000

SOILBIO Soil bioavailability 11111

DUSTBIO Dust bioavailability 11111

IFETAL Flag to include fetal exposure 11111

BLDMOT Maternal blood Pb (μg/dL) 1.94 1.94 1.94 1.94 1.94 

BRATIO Ratio of maternal to fetal blood 0.85 0.85 0.85 0.85 0.85 

IRBC Use non-linear RBC model 11111

RBCNL Non-linear RBC model threshold (μg/day) 60 60 60 60 60 

SATRAT Non-linear RBC model coefficient 350 350 350 350 350 

POWER Non-linear RBC model power 1.5 1.5 1.5 1.5 1.5 

Biokinetic Input Parameters by Age Endpoi

Exhibit I-2. Example Leggett Model Input Parameters

Parameter Description (years)

ICF International I-9 
1.7 1.8 1.9 2 2.1 

AFI Ingestion absorption fraction (absolute) 0.5 0.5 0.5 0.5 0.5 

RESVOL Respiratory volume (m3/day) 5.1 5.1 5.1 6 6 

AFLUNG Inhalation absorption fraction (absolute) 0.42 0.42 0.42 0.42 0.42 

CHR Direct intake to bloodstream (μg/day) 00000

BRETH Air concentration (μg/m3

) 0.05 0.05 0.05 0.05 0.05 

EAT Pb content in non-water diet (μg/day) 2.6 2.6 2.6 2.87 2.87 

H20CONS Water consumption (L/day) 0.31 0.31 0.31 0.31 0.31 

H20CONC Pb concentration in drinking water (μg/L) 4.61 4.61 4.61 4.61 4.61 

H20AF Absorption fraction for drinking water (abs) 0.5 0.5 0.5 0.5 0.5 

DUSTING Household dust ingestion (g/day) 0.07425 0.07425 0.07425 0.07425 0.07425 

DUSTAF Dust absorption fraction (relative to soluble) 0.3 0.3 0.3 0.3 0.3 

DUSTPB Dust Pb concentration (μg/g) 00000

SOILING Soil ingestion (g/day) 0.06075 0.06075 0.06075 0.06075 0.06075 

SOILAF Soil absorption fraction (relative to soluble) 0.3 0.3 0.3 0.3 0.3 

SOILPB Soil Pb concentration (μg/g) 00000

SOILBIO Soil bioavailability 11111

DUSTBIO Dust bioavailability 11111

IFETAL Flag to include fetal exposure 11111

BLDMOT Maternal blood Pb (μg/dL) 1.94 1.94 1.94 1.94 1.94 

BRATIO Ratio of maternal to fetal blood 0.85 0.85 0.85 0.85 0.85 

IRBC Use non-linear RBC model 11111

RBCNL Non-linear RBC model threshold (μg/day) 60 60 60 60 60 

SATRAT Non-linear RBC model coefficient 350 350 350 350 350 

POWER Non-linear RBC model power 1.5 1.5 1.5 1.5 1.5 

Biokinetic Input Parameters by Age Endpoi

Exhibit I-2. Example Leggett Model Input Parameters

Parameter Description (years)

ICF International I-10 
2.4 2.5 2.6 2.7 2.8 

AFI Ingestion absorption fraction (absolute) 0.5 0.5 0.5 0.5 0.5 

RESVOL Respiratory volume (m3/day) 6 6 6 6 6 

AFLUNG Inhalation absorption fraction (absolute) 0.42 0.42 0.42 0.42 0.42 

CHR Direct intake to bloodstream (μg/day) 00000

BRETH Air concentration (μg/m3

) 0.05 0.05 0.05 0.05 0.05 

EAT Pb content in non-water diet (μg/day) 2.87 2.87 2.87 2.87 2.87 

H20CONS Water consumption (L/day) 0.31 0.31 0.31 0.31 0.31 

H20CONC Pb concentration in drinking water (μg/L) 4.61 4.61 4.61 4.61 4.61 

H20AF Absorption fraction for drinking water (abs) 0.5 0.5 0.5 0.5 0.5 

DUSTING Household dust ingestion (g/day) 0.07425 0.07425 0.07425 0.07425 0.07425 

DUSTAF Dust absorption fraction (relative to soluble) 0.3 0.3 0.3 0.3 0.3 

DUSTPB Dust Pb concentration (μg/g) 00000

SOILING Soil ingestion (g/day) 0.06075 0.06075 0.06075 0.06075 0.06075 

SOILAF Soil absorption fraction (relative to soluble) 0.3 0.3 0.3 0.3 0.3 

SOILPB Soil Pb concentration (μg/g) 00000

SOILBIO Soil bioavailability 11111

DUSTBIO Dust bioavailability 11111

IFETAL Flag to include fetal exposure 11111

BLDMOT Maternal blood Pb (μg/dL) 1.94 1.94 1.94 1.94 1.94 

BRATIO Ratio of maternal to fetal blood 0.85 0.85 0.85 0.85 0.85 

IRBC Use non-linear RBC model 11111

RBCNL Non-linear RBC model threshold (μg/day) 60 60 60 60 60 

SATRAT Non-linear RBC model coefficient 350 350 350 350 350 

POWER Non-linear RBC model power 1.5 1.5 1.5 1.5 1.5 

Biokinetic Input Parameters by Age Endpoi

Exhibit I-2. Example Leggett Model Input Parameters

Parameter Description (years)

ICF International I-11 
3.1 3.2 3.3 3.4 3.5 

AFI Ingestion absorption fraction (absolute) 0.5 0.5 0.5 0.5 0.5 

RESVOL Respiratory volume (m3/day) 6.8 6.8 6.8 6.8 6.8 

AFLUNG Inhalation absorption fraction (absolute) 0.42 0.42 0.42 0.42 0.42 

CHR Direct intake to bloodstream (μg/day) 00000

BRETH Air concentration (μg/m3

) 0.05 0.05 0.05 0.05 0.05 

EAT Pb content in non-water diet (μg/day) 2.74 2.74 2.74 2.74 2.74 

H20CONS Water consumption (L/day) 0.33 0.33 0.33 0.33 0.33 

H20CONC Pb concentration in drinking water (μg/L) 4.61 4.61 4.61 4.61 4.61 

H20AF Absorption fraction for drinking water (abs) 0.5 0.5 0.5 0.5 0.5 

DUSTING Household dust ingestion (g/day) 0.07425 0.07425 0.07425 0.07425 0.07425 

DUSTAF Dust absorption fraction (relative to soluble) 0.3 0.3 0.3 0.3 0.3 

DUSTPB Dust Pb concentration (μg/g) 00000

SOILING Soil ingestion (g/day) 0.06075 0.06075 0.06075 0.06075 0.06075 

SOILAF Soil absorption fraction (relative to soluble) 0.3 0.3 0.3 0.3 0.3 

SOILPB Soil Pb concentration (μg/g) 00000

SOILBIO Soil bioavailability 11111

DUSTBIO Dust bioavailability 11111

IFETAL Flag to include fetal exposure 11111

BLDMOT Maternal blood Pb (μg/dL) 1.94 1.94 1.94 1.94 1.94 

BRATIO Ratio of maternal to fetal blood 0.85 0.85 0.85 0.85 0.85 

IRBC Use non-linear RBC model 11111

RBCNL Non-linear RBC model threshold (μg/day) 60 60 60 60 60 

SATRAT Non-linear RBC model coefficient 350 350 350 350 350 

POWER Non-linear RBC model power 1.5 1.5 1.5 1.5 1.5 

Exhibit I-2. Example Leggett Model Input Parameters

Biokinetic Input Parameters by Age Endpoi

Parameter Description (years)

ICF International I-12 
3.8 3.9 4 4.1 4.2 

AFI Ingestion absorption fraction (absolute) 0.5 0.5 0.5 0.5 0.5 

RESVOL Respiratory volume (m3/day) 6.8 6.8 7.8 7.8 7.8 

AFLUNG Inhalation absorption fraction (absolute) 0.42 0.42 0.42 0.42 0.42 

CHR Direct intake to bloodstream (μg/day) 00000

BRETH Air concentration (μg/m3

) 0.05 0.05 0.05 0.05 0.05 

EAT Pb content in non-water diet (μg/day) 2.74 2.74 2.61 2.61 2.61 

H20CONS Water consumption (L/day) 0.33 0.345 0.36 0.36 0.36 

H20CONC Pb concentration in drinking water (μg/L) 4.61 4.61 4.61 4.61 4.61 

H20AF Absorption fraction for drinking water (abs) 0.5 0.5 0.5 0.5 0.5 

DUSTING Household dust ingestion (g/day) 0.07425 0.07425 0.055 0.055 0.055 

DUSTAF Dust absorption fraction (relative to soluble) 0.3 0.3 0.3 0.3 0.3 

DUSTPB Dust Pb concentration (μg/g) 00000

SOILING Soil ingestion (g/day) 0.06075 0.06075 0.045 0.045 0.045 

SOILAF Soil absorption fraction (relative to soluble) 0.3 0.3 0.3 0.3 0.3 

SOILPB Soil Pb concentration (μg/g) 00000

SOILBIO Soil bioavailability 11111

DUSTBIO Dust bioavailability 11111

IFETAL Flag to include fetal exposure 11111

BLDMOT Maternal blood Pb (μg/dL) 1.94 1.94 1.94 1.94 1.94 

BRATIO Ratio of maternal to fetal blood 0.85 0.85 0.85 0.85 0.85 

IRBC Use non-linear RBC model 11111

RBCNL Non-linear RBC model threshold (μg/day) 60 60 60 60 60 

SATRAT Non-linear RBC model coefficient 350 350 350 350 350 

POWER Non-linear RBC model power 1.5 1.5 1.5 1.5 1.5 

Biokinetic Input Parameters by Age Endpoi

Exhibit I-2. Example Leggett Model Input Parameters

Parameter Description (years)

ICF International I-13 
4.5 4.6 4.7 4.8 4.9 

AFI Ingestion absorption fraction (absolute) 0.5 0.5 0.5 0.5 0.5 

RESVOL Respiratory volume (m3/day) 7.8 7.8 7.8 7.8 7.8 

AFLUNG Inhalation absorption fraction (absolute) 0.42 0.42 0.42 0.42 0.42 

CHR Direct intake to bloodstream (μg/day) 00000

BRETH Air concentration (μg/m3

) 0.05 0.05 0.05 0.05 0.05 

EAT Pb content in non-water diet (μg/day) 2.61 2.61 2.61 2.61 2.61 

H20CONS Water consumption (L/day) 0.36 0.36 0.36 0.36 0.375 

H20CONC Pb concentration in drinking water (μg/L) 4.61 4.61 4.61 4.61 4.61 

H20AF Absorption fraction for drinking water (abs) 0.5 0.5 0.5 0.5 0.5 

DUSTING Household dust ingestion (g/day) 0.055 0.055 0.055 0.055 0.055 

DUSTAF Dust absorption fraction (relative to soluble) 0.3 0.3 0.3 0.3 0.3 

DUSTPB Dust Pb concentration (μg/g) 00000

SOILING Soil ingestion (g/day) 0.045 0.045 0.045 0.045 0.045 

SOILAF Soil absorption fraction (relative to soluble) 0.3 0.3 0.3 0.3 0.3 

SOILPB Soil Pb concentration (μg/g) 00000

SOILBIO Soil bioavailability 11111

DUSTBIO Dust bioavailability 11111

IFETAL Flag to include fetal exposure 11111

BLDMOT Maternal blood Pb (μg/dL) 1.94 1.94 1.94 1.94 1.94 

BRATIO Ratio of maternal to fetal blood 0.85 0.85 0.85 0.85 0.85 

IRBC Use non-linear RBC model 11111

RBCNL Non-linear RBC model threshold (μg/day) 60 60 60 60 60 

SATRAT Non-linear RBC model coefficient 350 350 350 350 350 

POWER Non-linear RBC model power 1.5 1.5 1.5 1.5 1.5 

Exhibit I-2. Example Leggett Model Input Parameters

Biokinetic Input Parameters by Age Endpoi

Parameter Description (years)

ICF International I-14 
5.5 5.75 6 6.25 6.5 

AFI Ingestion absorption fraction (absolute) 0.5 0.5 0.5 0.5 0.5 

RESVOL Respiratory volume (m3/day) 8.8 8.8 10 10 10 

AFLUNG Inhalation absorption fraction (absolute) 0.42 0.42 0.42 0.42 0.42 

CHR Direct intake to bloodstream (μg/day) 00000

BRETH Air concentration (μg/m3

) 0.05 0.05 0.05 0.05 0.05 

EAT Pb content in non-water diet (μg/day) 2.74 2.74 2.99 2.99 2.99 

H20CONS Water consumption (L/day) 0.39 0.405 0.42 0.42 0.42 

H20CONC Pb concentration in drinking water (μg/L) 4.61 4.61 4.61 4.61 4.61 

H20AF Absorption fraction for drinking water (abs) 0.5 0.5 0.5 0.5 0.5 

DUSTING Household dust ingestion (g/day) 0.0495 0.0495 0.04675 0.04675 0.04675 

DUSTAF Dust absorption fraction (relative to soluble) 0.3 0.3 0.3 0.3 0.3 

DUSTPB Dust Pb concentration (μg/g) 00000

SOILING Soil ingestion (g/day) 0.0405 0.0405 0.03825 0.03825 0.03825 

SOILAF Soil absorption fraction (relative to soluble) 0.3 0.3 0.3 0.3 0.3 

SOILPB Soil Pb concentration (μg/g) 00000

SOILBIO Soil bioavailability 11111

DUSTBIO Dust bioavailability 11111

IFETAL Flag to include fetal exposure 11111

BLDMOT Maternal blood Pb (μg/dL) 1.94 1.94 1.94 1.94 1.94 

BRATIO Ratio of maternal to fetal blood 0.85 0.85 0.85 0.85 0.85 

IRBC Use non-linear RBC model 11111

RBCNL Non-linear RBC model threshold (μg/day) 60 60 60 60 60 

SATRAT Non-linear RBC model coefficient 350 350 350 350 350 

POWER Non-linear RBC model power 1.5 1.5 1.5 1.5 1.5 

Exhibit I-2. Example Leggett Model Input Parameters

Biokinetic Input Parameters by Age Endpoi

Parameter Description (years)

ICF International I-15 
 Appendix I 

 

ICF International I-16 DRAFT – December 2006

References 

Alexander, F. W.; Clayton, B. E.; Delves, H. T. (1974) Mineral and trace-metal balances 

in children receiving normal and synthetic diets. Q. J. Med. 43: 89-111. 

Casteel, S.W., R. Tessman, W.J. Brattin and A.M. Wahlquist. (2005) Relative 

Bioavailability of Lead in House Dust and Soil from the Herculaneum Lead Smelter Site 

in Herculaneum, Missouri. Prepared for Black & Veatch Special Projects Corporation. 

May 2005. 

Centers for Disease Control and Prevention (CDC). (1997) Third National Health and 

Nutrition Examination Survey (NHANES III), 1988-94, Dietary Recall Data. Available 

at http://www.cdc.gov/nchs/products/elec_prods/subject/nhanes3.htm. 

Centers for Disease Control and Prevention (CDC). (2004) Children's Blood Lead Levels 

in the United States. Childhood Lead Poisoning Prevention Branch, National Center for 

Environmental Health, CDC. Available at 

http://www.cdc.gov/nceh/lead/research/kidsBLL.htm#National%20surveys. 

Clayton, C. A.; Pellizzari, E. D.; Whitmore, R. W.; Perritt, R. L., Quackenboss, J. J. 

(1999) National human exposure assessment survey (NHEXAS): distributions and 

associations of lead, arsenic, and volatile organic compounds in EPA Region 5. J. 

Exposure Anal. Environ. Epidemiol. 9: 381-392. 

International Commission on Radiological Protection (ICRP). (2002) ICRP Publication 

89: Basic anatomical and physiological data for use in radiological protection. Annals of 

the ICRP 32 (3-4):100. 

Leggett, R.W. (1993) An Age-Specific Kinetic Model of Pb Metabolism in Humans. 

Environ Health Perspect 101:598-616. 

Moir, C. M.; Freedman, B.; McCurdy, R. (1996) Metal mobilization from waterdistribution systems of buildings serviced by lead-pipe mains. Can. Water Resour. J. 21: 

45-52. 

U.S. Environmental Protection Agency (USEPA). (1989) Review of the National 

Ambient Air Quality Standards for Lead: Exposure Analysis Methodology and 

Validation. OAQPS Staff Report. EPA-450/2-89-011. Office of Air Quality Planning and 

Standards, Research Triangle Park, NC.

U.S. Environmental Protection Agency (USEPA). (1994) Technical Support Document: 

Parameters and Equations Used in the Integrated Exposure Uptake Biokinetic Model for 

Lead in Children (v.099d). Office of Solid Waste. EPA 540/R-94/040. 
 Appendix I 

 

ICF International I-17 DRAFT – December 2006

U.S. Environmental Protection Agency (USEPA). (2002) Children-Specific Exposure 

Factors Handbook Interim Draft. National Center for Environmental Assessment, Office 

of Research and Development. EPA-600-P-00-002B. 

U.S. Environmental Protection Agency (USEPA). (2006) Air Quality Criteria for Lead, 

Volume I of II. Research Triangle Park, NC: National Center for Environmental 

Assessment – RTP Office. EPA/600/R-5/144aF. October. Available at 

http://cfpub.epa.gov/ncea/cfm/recordisplay.cfm?deid=158823. 

U.S. Food and Drug Administration (FDA). (2001) Total Diet Study. U. S. Food and 

Drug Administration Center for Food Safety and Applied Nutrition Office of Plant and 

Dairy Foods and Beverages (June 2001). Available at 

http://www.cfsan.fda.gov/~comm/tds-toc.html. 

van Wijnen JH, Clausing P, Brunekreef B. (1990) Estimated soil ingestion by children. 

Environ Res. 1990 Apr;51(2):147-62. 

Ziegler, E. E.; Edwards, B. B.; Jensen, R. L.; Mahaffey, K. R.; Fomon, S. J. (1978) 

Absorption and retention of lead by infants. Pediatr. Res. 12: 29-34. 

Appendix J 

Detailed Human Health Risk Results

 Appendix J 

 

ICF International J-1 DRAFT – December 2006 

1 Appendix J presents detailed human exposure and heath risk summary data for the three case 

2 study locations: the primary Pb smelter, the secondary Pb smelter, and the near roadway urban 

3 location. For each of the case study locations, the predicted blood Pb distributions, IQ 

4 distributions, and exposure pathway contributions to total Pb uptake are provided for both 

5 lifetime average and concurrent blood lead predictions from the Integrated Exposure Uptake 

6 Biokinetic (IEUBK) Model for Children (hereafter referred to as the IEUBK model) and the 

7 International Commission for Radiation Protection (ICRP) model (hereafter referred to as the 

8 Leggett model). Exhibit J-1 and J-2 present summary data for the primary Pb smelter; Exhibit J9 3 and J-4 present summary data for the secondary Pb smelter; and Exhibit J-5 presents summary 

10 data for the near roadway urban location. These results are discussed in more detail in Section 

11 6.2. 
Air Soil House Dust Diet

Total PolicyRelevant 

Sources

Total Po

Releva

Backgro

Exposu

IEUBK (Concurrent Blood Pb Metric)Max 37.2 -7.4 4.0% 7% 86% 2% 98% 2% 99.9th 21.9 -6.0 4.0% 7% 86% 2% 98% 2% 

99.5th 12.4 -4.4 3.4% 6% 87% 4% 96% 4% 99th 7.4 -3.0 3.3% 8% 85% 4% 96% 4% 

95th 3.7 -1.2 0.6% 68% 9% 22% 78% 22% 90th 2.9 -0.5 0.5% 54% 11% 34% 66% 34% 75th 2.0 - - 0.4% 41% 13% 45% 55% 45% Median 1.3 - - 0.9% 24% 19% 56% 44% 56% 25th 0.9 - - 0.7% 26% 18% 56% 44% 56% 1st 0.4 - - 0.4% 30% 15% 54% 46% 54% IEUBK (Lifetime-Averaged Blood Pb Metric)Max 48.5 -6.3 4.0% 7% 86% 2% 98% 2% 99.9th 28.6 -4.7 4.2% 3% 90% 2% 98% 2% 

99.5th 16.9 -3.1 2.9% 12% 80% 5% 95% 5% 99th 10.6 -1.7 2.9% 12% 80% 5% 95% 5% 95th 5.3 - - 0.7% 63% 11% 26% 74% 26% 

90th 4.1 - - 0.7% 59% 11% 29% 71% 29% 75th 2.7 - - 0.6% 20% 18% 62% 38% 62% Median 1.8 - - 0.7% 63% 11% 25% 75% 25% 25th 1.2 - - 0.7% 26% 18% 56% 44% 56% 1st 0.5 - - 0.4% 30% 15% 54% 46% 54% 

Exhibit J-1. Summary of Projected Blood Pb Distributions, IQ Distributions, and Exposure Pathway 

Total Pb Uptake for the Primary Pb Smelter Case Study, Current Conditions Scenari

Predicted IQ 

Change

(Log Linear 

Model)a

Pathway Contribution

Percentile

Predicted 

Blood Pb 

(μg/dL)

ICF International J-2 
Air Soil House Dust Diet

Total PolicyRelevant 

Sources

Total Po

Releva

Backgro

Exposu

Exhibit J-1. Summary of Projected Blood Pb Distributions, IQ Distributions, and Exposure Pathway 

Total Pb Uptake for the Primary Pb Smelter Case Study, Current Conditions Scenari

Predicted IQ 

Change

(Log Linear 

Model)a

Pathway Contribution

Percentile

Predicted 

Blood Pb 

(μg/dL)

Leggett (Concurrent Blood Pb Metric)Max 19.2 -5.6 2.9% 12% 80% 5% 95% 5% 99.9th 13.9 -4.7 4.0% 7% 86% 2% 98% 2% 

99.5th 6.7 -2.8 2.9% 12% 80% 5% 95% 5% 

99th 4.2 -1.5 2.0% 13% 74% 11% 89% 11% 95th 2.0 - - 0.9% 24% 19% 56% 44% 56% 90th 1.5 - - 0.3% 54% 11% 35% 65% 35% 75th 1.0 - - 0.6% 60% 11% 28% 72% 28% Median 0.7 - - 0.3% 31% 14% 55% 45% 55% 25th 0.5 - - 0.3% 54% 11% 35% 65% 35% 1st 0.2 - - 0.4% 30% 15% 54% 46% 54% Leggett (Lifetime-Averaged Blood Pb Metric)Max 31.8 -5.0 2.9% 12% 80% 5% 95% 5% 99.9th 22.9 -4.0 4.2% 3% 90% 2% 98% 2% 

99.5th 11.1 -1.8 2.9% 12% 80% 5% 95% 5% 99th 6.8 -0.3 1.1% 32% 50% 17% 83% 17% 

95th 3.1 - - 0.6% 59% 11% 29% 71% 29% 90th 2.3 - - 0.6% 68% 9% 22% 78% 22% 75th 1.6 - - 0.7% 59% 11% 29% 71% 29% Median 1.1 - - 0.4% 38% 13% 48% 52% 48% 25th 0.7 - - 0.9% 24% 19% 56% 44% 56% 1st 0.3 - - 0.4% 30% 15% 54% 46% 54% 

a - - indicates that IQ changes are not estimated below blood Pb cutoff values.

ICF International J-3 
Air Soil House Dust Diet Total Policy- Relevant Sources

Total P

Relev

Backgr

Expos

IEUBK (Concurrent Blood Pb Metric)

Max 33.8 -7.1 3.4% 11% 82% 3% 97% 3% 

99.9th 18.4 -5.5 3.4% 11% 82% 3% 97% 3% 

99.5th 11.2 -4.2 3.5% 6% 86% 4% 96% 4% 

99th 7.9 -3.2 0.5% 81% 6% 13% 87% 13% 95th 3.7 -1.2 0.6% 60% 11% 28% 72% 28% 90th 2.9 -0.5 0.5% 48% 12% 40% 60% 40% 75th 2.0 - - 0.5% 48% 12% 39% 61% 39% 

Median 1.4 - - 0.7% 59% 11% 29% 71% 29% 

25th 0.9 - - 0.4% 41% 14% 45% 55% 45% 

1st 0.4 - - 0.6% 20% 18% 62% 38% 62% 

IEUBK (Lifetime-Averaged Blood Pb Metric)

Max 45.6 -6.1 3.4% 11% 82% 3% 97% 3% 

99.9th 24.9 -4.3 3.6% 5% 88% 4% 96% 4% 

99.5th 15.5 -2.8 2.9% 12% 80% 5% 95% 5% 

99th 11.3 -1.9 2.9% 12% 80% 5% 95% 5% 95th 5.4 - - 2.2% 15% 74% 9% 91% 9% 90th 4.1 - - 0.4% 30% 15% 54% 46% 54% 75th 2.8 - - 0.6% 59% 11% 29% 71% 29% 

Median 1.9 - - 0.5% 31% 16% 52% 48% 52% 

25th 1.2 - - 0.9% 24% 19% 56% 44% 56% 

1st 0.5 - - 0.3% 43% 12% 44% 56% 44% 

Exhibit J-2. Summary of Projected Blood Pb Distributions, IQ Distributions, and Exposure Pathway Con

Pb Uptake for the Primary Pb Smelter Case Study, Attainment Scenario

Predicted IQ 

Change

(Log Linear 

Model)a

Percentile Predicted Blood Pb (μg/dL)

Pathway Contribution

ICF International J-4 
Air Soil House Dust Diet Total Policy- Relevant Sources

Total P

Relev

Backgr

Expos

Exhibit J-2. Summary of Projected Blood Pb Distributions, IQ Distributions, and Exposure Pathway Con

Pb Uptake for the Primary Pb Smelter Case Study, Attainment Scenario

Predicted IQ 

Change

(Log Linear 

Model)a

Percentile Predicted Blood Pb (μg/dL)

Pathway Contribution

Leggett (Concurrent Blood Pb Metric)

Max 17.0 -5.3 3.4% 6% 87% 4% 96% 4% 

99.9th 12.7 -4.5 3.6% 5% 88% 4% 96% 4% 

99.5th 6.4 -2.6 1.3% 77% 12% 10% 90% 10% 

99th 4.3 -1.6 2.9% 12% 80% 5% 95% 5% 95th 2.0 - - 0.7% 63% 11% 25% 75% 25% 90th 1.5 - - 0.6% 68% 9% 22% 78% 22% 75th 1.0 - - 0.9% 24% 19% 56% 44% 56% 

Median 0.7 - - 0.9% 26% 19% 54% 46% 54% 

25th 0.5 - - 0.5% 26% 17% 57% 43% 57% 

1st 0.2 - - 0.4% 24% 17% 59% 41% 59% 

Leggett (Lifetime-Averaged Blood Pb Metric)

Max 28.1 -4.6 3.4% 6% 87% 4% 96% 4% 

99.9th 20.7 -3.7 3.4% 6% 87% 4% 96% 4% 

99.5th 10.6 -1.7 1.3% 77% 12% 10% 90% 10% 

99th 7.1 -0.5 2.9% 12% 80% 5% 95% 5% 95th 3.1 - - 0.3% 54% 11% 35% 65% 35% 90th 2.3 - - 2.0% 14% 73% 11% 89% 11% 75th 1.6 - - 0.4% 41% 14% 45% 55% 45% 

Median 1.1 - - 0.9% 24% 19% 56% 44% 56% 

25th 0.7 - - 0.6% 20% 18% 62% 38% 62% 

1st 0.3 - - 0.4% 24% 17% 59% 41% 59% 

a - - indicates that IQ changes are not estimated below blood Pb cutoff values.

ICF International J-5 
Air Soil House Dust Diet Total Policy- Relevant Sources

Total Po

Releva

Backgro

Exposu

IEUBK (Concurrent Blood Pb Metric)Max 4.7 -1.8 0.3% 8% 23% 69% 24% 76% 99.9th 3.7 -1.1 0.8% 9% 27% 63% 30% 70% 

99.5th 3.0 -0.6 0.8% 9% 27% 63% 30% 70% 99th 2.7 -0.3 0.1% 7% 22% 71% 22% 78% 95th 1.9 - - 0.8% 9% 27% 63% 30% 70% 90th 1.7 - - 0.0% 7% 22% 71% 22% 78% 75th 1.2 - - 0.0% 7% 22% 71% 22% 78% Median 0.9 - - 0.4% 8% 24% 68% 26% 74% 25th 0.7 - - 0.2% 7% 23% 70% 23% 77% 1st 0.3 - - 0.2% 8% 23% 69% 24% 76% IEUBK (Lifetime-Averaged Blood Pb Metric)Max 6.0 - - 0.3% 8% 23% 69% 24% 76% 99.9th 4.7 - - 0.0% 7% 22% 71% 22% 78% 99.5th 3.9 - - 0.3% 8% 23% 69% 24% 76% 99th 3.5 - - 0.5% 9% 25% 66% 27% 73% 95th 2.5 - - 0.3% 8% 23% 69% 24% 76% 90th 2.1 - - 0.2% 8% 23% 69% 24% 76% 75th 1.6 - - 0.2% 8% 23% 69% 24% 76% Median 1.1 - - 0.1% 7% 22% 71% 22% 78% 25th 0.8 - - 0.3% 8% 24% 68% 25% 75% 1st 0.4 - - 0.5% 8% 25% 67% 26% 74% 

Exhibit J-3. Summary of Projected Blood Pb Distributions, IQ Distributions, and Exposure Pathway 

Total Pb Uptake for the Secondary Pb Smelter Case Study, MPE (Modeled) Soil Concentra

Predicted IQ 

Change

(Log Linear 

Model)a

Percentile

Predicted 

Blood Pb 

(μg/dL)

Pathway Contribution

ICF International J-6 
Air Soil House Dust Diet Total Policy- Relevant Sources

Total Po

Releva

Backgro

Exposu

Exhibit J-3. Summary of Projected Blood Pb Distributions, IQ Distributions, and Exposure Pathway 

Total Pb Uptake for the Secondary Pb Smelter Case Study, MPE (Modeled) Soil Concentra

Predicted IQ 

Change

(Log Linear 

Model)a

Percentile

Predicted 

Blood Pb 

(μg/dL)

Pathway Contribution

Leggett (Concurrent Blood Pb Metric)Max 2.9 -0.5 0.1% 7% 22% 70% 22% 78% 99.9th 2.1 - - 0.5% 8% 24% 67% 26% 74% 

99.5th 1.6 - - 0.8% 9% 27% 63% 30% 70% 99th 1.4 - - 0.1% 7% 22% 70% 22% 78% 95th 1.0 - - 0.8% 9% 27% 63% 31% 69% 90th 0.9 - - 0.4% 8% 24% 68% 25% 75% 75th 0.6 - - 0.3% 8% 23% 69% 24% 76% Median 0.5 - - 0.6% 9% 25% 65% 29% 71% 25th 0.3 - - 0.5% 8% 25% 67% 26% 74% 1st 0.2 - - 0.3% 8% 23% 69% 24% 76% Leggett (Lifetime-Averaged Blood Pb Metric)Max 4.1 - - 0.1% 7% 22% 70% 22% 78% 99.9th 3.0 - - 0.0% 7% 22% 71% 22% 78% 99.5th 2.3 - - 0.2% 8% 23% 69% 24% 76% 99th 1.9 - - 0.4% 8% 24% 67% 26% 74% 95th 1.4 - - 0.4% 8% 24% 67% 26% 74% 90th 1.2 - - 0.1% 7% 22% 70% 23% 77% 75th 0.9 - - 0.3% 8% 23% 69% 24% 76% Median 0.7 - - 0.1% 7% 22% 70% 23% 77% 25th 0.5 - - 0.0% 7% 22% 71% 22% 78% 1st 0.2 - - 0.1% 7% 22% 70% 23% 77% 

a - - indicates that IQ changes are not estimated below blood Pb cutoff values.

ICF International J-7 
Air Soil House Dust Diet Total Policy- Relevant Sources

Total Po

Releva

Backgro

Exposu

IEUBK (Concurrent Blood Pb Metric)Max 6.7 -2.5 0.3% 19% 25% 55% 39% 61% 99.9th 4.7 -2.3 0.4% 20% 26% 54% 40% 60% 

99.5th 3.7 -1.4 0.2% 19% 25% 56% 38% 62% 99th 3.3 -1.0 0.3% 20% 25% 54% 40% 60% 95th 2.4 -0.3 0.2% 19% 25% 56% 38% 62% 90th 2.0 - - 0.1% 18% 24% 58% 36% 64% 75th 1.5 - - 0.2% 19% 25% 56% 38% 62% Median 1.1 - - 0.1% 18% 24% 57% 37% 63% 25th 0.8 - - 0.2% 19% 25% 56% 39% 61% 1st 0.4 - - 0.0% 18% 24% 58% 36% 64% IEUBK (Lifetime-Averaged Blood Pb Metric)Max 9.0 -1.2 0.3% 19% 25% 55% 39% 61% 99.9th 6.3 -0.1 0.3% 19% 25% 56% 38% 62% 99.5th 4.9 - - 0.3% 20% 25% 54% 40% 60% 99th 4.4 - - 0.1% 19% 24% 57% 37% 63% 95th 3.2 - - 0.5% 21% 27% 52% 43% 57% 90th 2.7 - - 0.1% 18% 24% 57% 37% 63% 75th 2.0 - - 0.4% 20% 26% 54% 41% 59% Median 1.5 - - 0.2% 19% 24% 57% 38% 62% 25th 1.1 - - 0.4% 19% 26% 55% 40% 60% 1st 0.5 - - 0.0% 18% 24% 58% 36% 64% 

Exhibit J-4. Summary of Projected Blood Pb Distributions, IQ Distributions, and 

Exposure Pathway Contributions to Total Pb Uptake for the Secondary Pb Smelter Case Study, Hybrid 

Percentile

Predicted 

Blood Pb 

(μg/dL)

Predicted IQ 

Change

(Log Linear 

Model)a

Pathway Contribution

ICF International J-8 
Air Soil House Dust Diet Total Policy- Relevant Sources

Total Po

Releva

Backgro

Exposu

Exhibit J-4. Summary of Projected Blood Pb Distributions, IQ Distributions, and 

Exposure Pathway Contributions to Total Pb Uptake for the Secondary Pb Smelter Case Study, Hybrid 

Percentile

Predicted 

Blood Pb 

(μg/dL)

Predicted IQ 

Change

(Log Linear 

Model)a

Pathway Contribution

Leggett (Concurrent Blood Pb Metric)Max 3.0 -0.5 0.2% 19% 24% 57% 37% 63% 99.9th 2.3 - - 0.2% 19% 24% 57% 38% 62% 

99.5th 1.9 - - 0.3% 19% 25% 55% 39% 61% 99th 1.7 - - 0.4% 20% 26% 53% 42% 58% 95th 1.2 - - 0.2% 19% 24% 57% 38% 62% 90th 1.0 - - 0.2% 19% 24% 57% 38% 62% 75th 0.8 - - 0.2% 19% 25% 56% 38% 62% Median 0.6 - - 0.3% 20% 25% 55% 40% 60% 25th 0.4 - - 0.1% 18% 24% 58% 36% 64% 1st 0.2 - - 0.2% 19% 25% 56% 38% 62% Leggett (Lifetime-Averaged Blood Pb Metric)Max 4.3 - - 0.2% 19% 24% 57% 37% 63% 99.9th 3.3 - - 0.1% 19% 24% 57% 37% 63% 99.5th 2.7 - - 0.2% 19% 25% 56% 38% 62% 99th 2.5 - - 0.3% 20% 25% 55% 40% 60% 95th 1.8 - - 0.3% 20% 25% 55% 40% 60% 90th 1.5 - - 0.3% 19% 25% 56% 39% 61% 75th 1.1 - - 0.2% 19% 24% 57% 38% 62% Median 0.8 - - 0.2% 19% 25% 55% 39% 61% 25th 0.6 - - 0.1% 19% 24% 57% 37% 63% 1st 0.3 - - 0.3% 20% 25% 55% 40% 60% 

a - - indicates that IQ changes are not estimated below blood Pb cutoff values.

ICF International J-9 
Air Soil House Dust Diet Total Policy- Relevant Sources

Total Poli

Relevan

Backgrou

Exposure

IEUBK (Concurrent Blood Pb Metric)Max 8.1 -3.3 0.1% 52% 29% 20% 80% 20% 99.9th 6.5 -2.7 0.2% 30% 26% 44% 56% 44% 

99.5th 5.0 -2.0 0.2% 30% 26% 44% 56% 44% 99th 4.4 -1.6 0.2% 30% 26% 44% 56% 44% 95th 3.1 -0.7 0.2% 30% 26% 44% 56% 44% 90th 2.6 -0.2 0.2% 30% 26% 44% 56% 44% 75th 1.9 - - 0.2% 30% 26% 44% 56% 44% Median 1.4 - - 0.2% 37% 27% 35% 65% 35% 25th 1.0 - - 0.2% 37% 27% 35% 65% 35% 1st 0.4 - - 0.2% 30% 26% 44% 56% 44% IEUBK (Lifetime-Averaged Blood Pb Metric)Max 11.9 -2.0 0.1% 52% 29% 20% 80% 20% 99.9th 9.1 -1.2 0.2% 30% 26% 44% 56% 44% 99.5th 7.0 -0.4 0.2% 30% 26% 44% 56% 44% 99th 6.2 - - 0.2% 30% 26% 44% 56% 44% 95th 4.4 - - 0.2% 30% 26% 44% 56% 44% 90th 3.6 - - 0.2% 30% 26% 44% 56% 44% 75th 2.7 - - 0.2% 30% 26% 44% 56% 44% Median 1.9 - - 0.2% 37% 27% 35% 65% 35% 25th 1.4 - - 0.2% 37% 27% 35% 65% 35% 1st 0.6 - - 0.2% 30% 26% 44% 56% 44% 

Exhibit J-5. Summary of Projected Blood Pb Distributions, IQ Distributions, and 

Exposure Pathway Contributions to Total Pb Uptake for the Near Roadway Urban Case Stu

Predicted 

Blood Pb 

(μg/dL)

Predicted IQ 

Changea

(Log Linear 

Model)

Pathway Contribution

Percentile

ICF International J-10 
Air Soil House Dust Diet Total Policy- Relevant Sources

Total Poli

Relevan

Backgrou

Exposure

Exhibit J-5. Summary of Projected Blood Pb Distributions, IQ Distributions, and 

Exposure Pathway Contributions to Total Pb Uptake for the Near Roadway Urban Case Stu

Predicted 

Blood Pb 

(μg/dL)

Predicted IQ 

Changea

(Log Linear 

Model)

Pathway Contribution

Percentile

Leggett (Concurrent Blood Pb Metric)Max 6.7 -2.8 0.2% 37% 27% 35% 65% 35% 99.9th 4.2 - - 0.2% 30% 26% 44% 56% 44% 

99.5th 3.2 - - 0.2% 30% 26% 44% 56% 44% 99th 2.7 - - 0.2% 37% 27% 35% 65% 35% 95th 1.9 - - 0.2% 30% 26% 44% 56% 44% 90th 1.6 - - 0.2% 30% 26% 44% 56% 44% 75th 1.2 - - 0.2% 30% 26% 44% 56% 44% Median 0.8 - - 0.2% 30% 26% 44% 56% 44% 25th 0.6 - - 0.2% 30% 26% 44% 56% 44% 1st 0.3 - - 0.2% 30% 26% 44% 56% 44% Leggett (Lifetime-Averaged Blood Pb Metric)Max 9.5 -1.4 0.2% 37% 27% 35% 65% 35% 99.9th 6.9 -0.4 0.1% 52% 29% 20% 80% 20% 99.5th 4.9 - - 0.2% 30% 26% 44% 56% 44% 99th 4.1 - - 0.2% 30% 26% 44% 56% 44% 95th 2.9 - - 0.2% 30% 26% 44% 56% 44% 90th 2.4 - - 0.2% 37% 27% 35% 65% 35% 75th 1.7 - - 0.2% 30% 26% 44% 56% 44% Median 1.2 - - 0.2% 37% 27% 35% 65% 35% 25th 0.9 - - 0.2% 30% 26% 44% 56% 44% 1st 0.4 - - 0.2% 30% 26% 44% 56% 44% 

a - - indicates that IQ changes are not estimated below blood Pb cutoff values.

ICF International J-11 
 Appendix J 

 

ICF International J-12 DRAFT – December 2006 

1 References 

2 

3 Leggett, R.W. (1993) An Age-Specific Kinetic Model of Lead Metabolism in Humans. Environ 

4 Health Perspect 101:598-616.

5 

6 U.S. Environmental Protection Agency (USEPA). (1994) Technical Support Document: 

7 Parameters and Equations Used in the Integrated Exposure Uptake Biokinetic Model for Lead in 

8 Children (v.099d). Office of Solid Waste. EPA 540/R-94/040. 

9 
Appendix K 

Adaptation of the Lanphear et al. (1998) Model for 

Estimating Blood Pb Levels in the Pilot Phase Assessment 
 

 
 Appendix K 

 

ICF International K-1 DRAFT – December 2006 

1 Appendix K includes a discussion of the Lanphear et al. (1998) “empirical” blood Pb model, 

2 which was included in the sensitivity analysis, in addition to the Integrated Exposure Uptake 

3 Biokinetic (IEUBK) Model for Children (hereafter referred to as the IEUBK model) and the 

4 International Commission for Radiation Protection (ICRP) model (hereafter referred to as the 

5 Leggett model), to compare the resultant blood Pb distributions and IQ change estimates. 

6 

7 Lanphear et al. (1998) reported the results of an analysis of the relationship between residential 

8 soil Pb levels, house dust Pb concentrations, Pb paint hazards, and blood Pb levels in 12 cohorts 

9 of urban children in the United States. The study controlled for socioeconomic and family 

10 variables, and exposure to Pb in drinking water. A major result of this study was a model that 

11 predicted blood Pb concentrations as a function of dust Pb loading (the amount of Pb per unit 

12 area of flooring) and residential soil Pb concentrations. As discussed in Section 6.1, it is 

13 important to note that the Lanphear et al. model estimates blood Pb concentrations for 16 month 

14 old children, so the results from this model cannot be directly compared to the lifetime average 

15 and concurrent blood lead predictions from the IEUBK and Leggett models. 

16 

17 Two technical issues needed to be addressed before the Lanphear et al. model could be used to 

18 estimate blood Pb levels in the pilot phase human exposure and health risk assessments. First, 

19 the Lanphear et al. model’s input is dust Pb loading rather than house dust Pb concentration, 

20 therefore a model needed to be developed to describe the relationship between the estimates of 

21 house dust Pb loading in the Lanphear et al. model and the house dust concentration estimates 

22 generated in the primary Pb smelter case study. Second, a method had to be developed to apply 

23 the Lanphear et al. model to the specific combinations of house dust and soil Pb exposures in 

24 each of the case study block-groups and block-levels. This appendix explains how these two 

25 technical issues were addressed. 
 Appendix K 

 

ICF International K-2 DRAFT – December 2006 

1 

2 K.1. Development of a House Dust Pb Concentration- Dust Pb Loading Regression 

3 Model 

4 

5 The first technical issue that had to be addressed in this analysis was developing a model to 

6 relate house dust Pb concentration to house dust Pb loading. In order to address this issue, the 

7 relationship between dust Pb loading and house dust Pb concentration was investigated using a 

8 data set developed as part of HUD’s 1997 National Survey. The data set was used because it 

9 appeared to be the largest, most nationally representative source of both dust Pb loading (from 

10 wipe samples) and house dust Pb concentration data taken simultaneously from the same 

11 households. To the extent that these data do not reflect the dust Pb loading-house dust Pb 

12 concentration relationship in the primary Pb smelter case study, the blood Pb estimates will be 

13 biased. 

14 

15 The data set developed as part of HUD’s 1997 National Survey consisted of 307 dust Pb loading 

16 and house dust Pb concentration measurements taken from 284 households (USEPA 1998, 

17 Appendix C). The data was stratified into four vintage ranges from pre-1940 to post-1979. Then 

18 the data from all four ranges were pooled for the analysis. Log-log regression provided the best 

19 fit and regression diagnostics for the data. Two dust Pb concentration data points, one with a 

20 value more than 10-fold below the next lowest value, and one with a value more than 10-fold 

21 above the next highest value, were excluded from the analysis. The house dust Pb concentration 

22 model derived in this manner was as follows (also, see Exhibit K-1): 

23 

24 LnDustPb = 4.0425 + 0.5848 × LnDustPbLoading

25 

26 where: 

27 

28 LnDustPb = log-transformed house dust Pb concentration (μg/g) 

 LnDustPbLoading = log-transformed dust Pb loading (wipe samples)(μg/ft2 29 ) 

adjusted R2 30 = adjusted variance, set to 0.433 

31 

32 
 Appendix K 

 

ICF International K-3 DRAFT – December 2006 

1 

2 Exhibit K-1. Regression Analysis of HUD National Survey House Dust Pb Concentration 

3 Data and Dust Pb Loading Data 

y = 0.5848x + 4.0425

R2 = 0.433

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

-1.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0

ln (Wipe Sample Dust Loading, μg/sq. ft.)

ln(Dust Pb Concentration, μg/g)

4 

5 

6 K.2. Estimation of Equivalent House Dust Pb Concentrations and a Bivariate Blood Pb 

7 Model 

8 

9 The second technical issue that had to be addressed in this analysis was developing a method to 

10 apply the Lanphear et al. model to the specific combinations of house dust and soil Pb exposures 

11 in each of the case study block-groups and block-levels. In order to address this issue, the 

12 regression analysis was used to convert selected dust Pb loading values from the Lanphear et al. 

13 (1998) analysis to estimates of house dust Pb concentrations. Exhibit K-2 is a reproduction of 

14 Table 4 in Lanphear et al. (1998), with a column added for estimated house dust Pb 

15 concentrations. Table 4 in Lanphear et al. (1998) contains covariate-adjusted estimates of blood 

16 Pb for 16 month old children associated with specified combinations of dust Pb loading and soil 

17 Pb concentrations. In Exhibit K-2, covariate-adjusted estimates of blood Pb for 16 month old 

18 children are also specified for house dust Pb concentrations. 

19 
 Appendix K 

 

ICF International K-4 DRAFT – December 2006 

1 In order to estimate blood Pb values for individual census blocks, Exhibit K-2 was used to derive 

2 a bivariate model for predicting blood Pb as a continuous function of soil and house dust Pb 

3 concentrations. The REGRESS module from Mathematica® version 5.2 was used to fit a 

4 nonlinear model to the natural log of soil and house dust Pb concentrations, as follows (Wolfram 

5 Research Inc. 2005): 

6 

7 BloodPb = -9.1138 + 2.03554 × LnDustPb + 0.66657 × LnSoilPb

8 where: 

9 

10 BloodPb = concentration of Pb in blood (mg/kg)

11 LnDustPb = log-transformed house dust Pb concentration (μg/g) 

 LnSoilPb 12 = log-transformed soil dust Pb concentration (μg/g) 

13 

 All the coefficients were significant at p < 10-6 14 and the F-Ratio for the fit model was 960.3 (p = 

< 10-6 15 ). To test the model, the fitted coefficients were used to reproduce the estimated blood Pb 

16 values in Exhibit K-2. The resulting blood Pb values matched those in the table within an 

17 average of 0.4 percent. The maximum difference between any of the values in Exhibit K-2 and 

18 those in Lanphear et al.’s Table 4 was 1.6 percent. 

19 

20 Exhibit K-2. Predicted Blood Pb Levels Associated with Combinations of Dust Pb 

21 Loading, House Dust Pb Concentrations, and Soil Dust Pb Concentrations 

22 (Adapted from Lanphear et al. 1998, Table 4) 

Soil Dust Pb Concentration (mg/kg) Dust Pb 

Loading 

(μg/ft2

) 

Estimated 

Equivalent 

House Dust 

Pb Conc. 

(mg/kg) 

10 72 100 500 1000 1500 2000 4000 

 1 57 2.3 2.8 2.9 3.5 3.8 4 4.1 4.4 

 5 146 3.2 4 4.1 4.9 5.3 5.5 5.7 6.1 

 10 219 3.7 4.6 4.7 5.6 6.1 6.3 6.5 7.1 

 15 278 4 5 5.1 6.1 6.6 6.9 7.1 7.7 

 20 328 4.2 5.3 5.4 6.5 7 7.3 7.6 8.1 

 25 374 4.4 5.5 5.7 6.8 7.3 7.7 7.9 8.5 

 40 493 4.9 6.1 6.3 7.5 8.1 8.4 8.7 9.4 

 55 593 5.2 6.5 6.7 8 8.6 9 9.3 10 

 70 683 5.5 6.8 7 8.4 9.1 9.5 9.8 10.5 

 100 842 5.9 7.3 7.6 9 9.7 10.2 10.5 11.3 

23 

24 

25 Note that for equivalent house dust Pb concentrations outside of the range of the model 

26 (i.e., > 845 μg/g), the same degree of model fit cannot be expected. However, only 17 block27 groups/block-levels in the primary Pb smelter case study, with less than two percent of the 

28 exposed child population, have predicted house dust Pb concentrations above this value. 
 Appendix K 

 

ICF International K-5 DRAFT – December 2006 

1 References 

2 

3 Lanphear, B.P., Matte, T.D., Rogers, J., Clickner, R.P., Dietz, B., Bornschein, R.L., Succop, P., 

4 Mahaffey, K.R., Dixon, S., Galke, W., Rabinowitz, M., Farfel, M., Rohde, C., Schwartz, J., 

5 Ashley, P., Jacobs, D.E. (1998) The Contribution of Lead-Contaminated House Dust and 

6 Residential Soil to Children’s Blood Lead Levels: A Pooled Analysis of 12 Epidemiologic 

7 Studies. Environmental Research 79:51-68.

8 

9 U.S. Environmental Protection Agency (USEPA). (1998) Risk Analysis to Support Standards 

10 for Lead in Paint, Dust, and Soil. Office of Pollution Prevention and Toxics. EPA 747-R-97-

11 006. 

12 

13 Wolfram Research, Inc. (2005) Mathematica, Version 5.2. Champaign, IL. 

Appendix L 

Development of Pb Soil Screening Values

 Appendix L 

ICF International L-1 DRAFT – December 2006 

1 The purpose of this appendix is to document the development of soil benchmarks to use in 

2 screening soil Pb concentrations for risks of adverse effects on birds or mammals for the Pb 

3 NAAQS review (see Section L.1). Development of these soil screening values (SSVs) was 

4 based in part on the methodology developed by EPA for estimating Ecological Soil Screening 

5 Levels (Eco-SSLs) for use in the Superfund program. As background, therefore, a brief 

6 overview of the Eco-SSL methodology and the derivation of the Pb Eco-SSLs for birds and 

7 mammals is presented in Section L.2. An evaluation of the potential utility of the Pb Eco-SSLs 

8 for the Pb NAAQS review is presented in Section L.3. Section L.4 presents the SSVs for birds 

9 and mammals specifically derived for the Pb NAAQS review. 
 Appendix L 

ICF International L-2 DRAFT – December 2006 

1 

2 L.1 Purpose 

3 

4 The purpose of this appendix is to document the development of soil screening values (SSVs) for 

5 use in the ecological risk assessment conducted for the Pb NAAQS review. In general, 

6 screening-level ecological benchmarks are concentrations of a chemical in an environmental 

7 medium below which it is very unlikely that adverse ecological effects might occur. At exposure 

8 concentrations above the screening-level benchmark, further evaluation may be needed to 

9 determine the likelihood of adverse ecological effects. To conserve resources, that evaluation 

10 may be conducted iteratively, with information gleaned at one stage informing the next stage in 

11 the assessment (USEPA 1998a). 

12 

13 Pre-screens or initial screening-level assessments generally include many conservative 

14 assumptions to ensure that risks are not overlooked. For example, in the Superfund program, a 

15 screening-level risk assessment for wildlife generally assumes 100 percent bioavailability of a 

16 contaminant in food, soil, and water, and a diet consisting of 100 percent of the diet item that is 

17 most contaminated (USEPA 1998b). If the initial screening assessment cannot conclude that 

18 risks are negligible for one or more chemicals, further analysis may or may not be needed 

19 depending on the risk management decision that is under advisement. Depending on the EPA 

20 program office and its needs, further analysis will be conducted iteratively or the next phase will 

21 be full-scale baseline human exposure and health risk assessments. 

22 

23 This appendix documents the development of SSVs to screen for risks of Pb in soils to birds and 

24 mammals in an ecological risk assessment for the Pb NAAQS review. EPA’s Superfund 

25 program has developed Ecological Soil Screening Levels (Eco-SSLs) for use in screening-level 

26 assessments for Superfund sites. The methodology for developing Eco-SSLs has undergone 

27 extensive review and consensus building between representatives of the Agency, academia, and 

28 industry, and therefore represents an excellent starting point for consideration in developing 

29 SSVs for the Pb NAAQS Review. 

30 

31 First, it was considered whether the Eco-SSLs for Superfund sites might be appropriate for use in 

32 the context of the Pb NAAQS review. The lowest Eco-SSL for Pb, which is the avian Eco-SSL 

33 of 11 mg/kg, was compared to background concentrations of Pb in soils across the United States. 

34 That review indicated that between 70 and 85 percent of background soil concentrations (i.e., 

35 samples taken in areas far from anthropogenic sources in the United States) might exceed the 

36 Eco-SSL (see Section L.3). In the absence of documented impacts of Pb to birds nationwide, it 

37 was concluded that the avian Eco-SSL is more conservative than necessary for the Pb NAAQS 

38 review. However, the Eco-SSL methodology for back-calculating soil concentrations from 

39 toxicity reference values (TRVs) for birds and mammals is appropriate, and the TRVs developed 

40 for the Eco-SSLs are based on extensive literature reviews and data quality assessments. 

41 Therefore, EPA’s OAPQS decided to use as much of the Eco-SSL approach as was appropriate 

42 in developing SSVs for the Pb NAAQS review. 

43 

44 While available data indicate that perhaps only 6 percent of background soil Pb concentrations 

45 exceed the Eco-SSL for mammals (Section L.3), any methods or assumptions used to develop an 
 Appendix L 

ICF International L-3 DRAFT – December 2006 

1 avian Pb SSV for the Pb NAAQS review would also apply to the development of a mammalian 

2 Pb SSV to allow comparable risk screening assessments for birds and mammals. 

3 

4 An overview of the Superfund Eco-SSLs and how they are derived (for birds and mammals in 

5 particular) is provided in the following section. 

6 

7 L.2 Superfund Eco-SSLs 

8 

9 L.2.1 Overview of Eco-SSLs 

10 

11 EPA’s Superfund program has been developing Eco-SSLs since the late 1990s, with peer review 

12 of the methodology by EPA’s Science Advisory Board in 1999 and an external peer review 

13 workshop open to the public in 2000. The Guidance for Developing Ecological Soil Screening 

14 Levels was published in 2003 and revised in 2005 (USEPA 2005a). Eco-SSLs for Pb were 

15 published in 2005 (USEPA 2005b). Eco-SSLs are developed for four groups of organisms: 

16 plants, soil invertebrates, birds, and mammals. For birds and mammals, Eco-SSLs are based on 

17 the lowest Eco-SSL for each of three different species in each group. The three species have 

18 been selected to reflect those most exposed through their diets and incidental soil ingestion rates 

19 (e.g., soil ingested when foraging on the ground for seeds or invertebrates). The Eco-SSLs for 

20 birds and mammals are expressed as soil concentrations and are back-calculated from a hazard 

21 quotient (HQ) of 1.0 (i.e., the soil concentration for which the estimated exposure equals a 

22 toxicity reference value for the group). Exposures to birds and mammals via inhalation or 

23 dermal absorption from soils were not evaluated because they are expected to be negligible 

24 compared to the risk from oral exposures. 

25 

26 Eco-SSLs for plants and soil invertebrates are considered applicable to soils with a pH between 

27 4.0 and 8.5 when the organic matter content is less than or equal to 10 percent. Eco-SSLs are not 

28 expected to apply to wetland soils that are regularly flooded or areas amended with sewage 

29 sludge (because of high organic content) (USEPA 2005a). In general, because of the generally 

30 higher organic content of wetland sediments compared to terrestrial (upland) soils, 

31 bioavailability of metals in wetlands is expected to be less than in uplands. EPA did not report 

32 soil conditions for which the avian and mammalian Eco-SSLs are applicable; presumably they 

33 are applicable to similar soil conditions as described here. 

34 

35 A generic limitation of the Eco-SSL methodology is that soil microbial processes are not 

36 included; however, the data were considered to be insufficient and interpretation of results too 

37 uncertain for establishing risk-based thresholds for these ecosystem functions. In addition, 

38 amphibians, which are particularly important in wetland ecosystems, were not included due to 

39 data limitations. Of the four Eco-SSLs for Pb, the values for birds (11 mg/kg) and for mammals 

40 (56 mg/kg) are the lowest; therefore, the derivation of these values is described in detail in the 

41 next section. 

42 

43 L.2.2 Derivation of Eco-SSLs for Birds and Mammals 

44 

45 The first step in the derivation of Eco-SSLs for birds and mammals is identifying an appropriate 

46 TRV for each class of animals. The TRV for birds is based on avian toxicity data, and the TRV 
 Appendix L 

ICF International L-4 DRAFT – December 2006 

1 for mammals is based on mammalian toxicity data. The TRV represents the dose (expressed in 

2 mg of chemical per kg body weight [wet weight] per day) associated with the highest no3 observed-adverse-effect level (NOAEL) in the data set of adequate toxicity studies. For each 

4 chemical, an extensive literature search was conducted to identify toxicity studies, which then 

5 were reviewed for applicability and quality. 

6 

7 In general, growth and reproduction are the most sensitive endpoints for wildlife toxicity that are 

8 likely to impact population stability. The relationships between more sensitive biochemical or 

9 physiological endpoints and the likelihood of population-level effects generally are unclear. 

10 Therefore, only studies with growth, reproduction, or survivorship as endpoints were used to 

11 derive a TRV for the Eco-SSLs. For example, to develop a TRV for birds, the geometric mean 

12 of the NOAEL values for growth and reproduction from adequate toxicity studies are calculated. 

13 That value then is compared with bounded lowest-observed-adverse-effect-levels (LOAELs) 

from adequate toxicity studies.1 14 If the geometric mean NOAEL is higher than the lowest 

15 bounded LOAEL, then the TRV is set to the highest bounded NOAEL that is lower than the 

16 lowest bounded LOAEL. This approach is reasonable and not overly conservative for a 

17 screening-level assessment (i.e., there is a small probability that exposure at the TRV would 

18 cause adverse effects in a given species; and even for a sensitive species, only a small proportion 

19 of the population might be affected). 

20 

21 To calculate an Eco-SSL for birds, the potential exposures of three bird species are evaluated: an 

22 herbivore (mourning dove), a ground insectivore (American woodcock), and a carnivore (red23 tailed hawk). The first two species were selected as representative of ground-feeders that may be 

24 exposed through incidental ingestion of soils while foraging as well as through ingestion of 

25 contaminants taken up by plants and soil invertebrates in their diet. The third species was 

26 included to evaluate chemicals that might bioaccumulate through a terrestrial food chain. An 

27 Eco-SSL is calculated for each species, and the lowest one becomes the avian Eco-SSL. 

28 

29 Exhibit L-1 provides the parameter values used by EPA to calculate the avian Eco-SSLs for Pb. 

30 The same procedure is used for all chemicals. The Pb-specific input parameter values in Exhibit 

31 L-1 are the TRV for Pb and the results of the equations used to estimate the concentration of Pb 

32 in different diet items (i.e., biota type i). The same food and soil ingestion rates are used for all 

33 chemicals. The resulting Eco-SSLs are provided in the final column. 

34 

 

1

 When there is a statistically significant adverse effect observed at the lowest dose included in a toxicity 

experiment, the LOAEL is said to be “unbounded” (i.e., a lower, bounding, NOAEL is missing). When the highest 

dose tested does not produce a statistically significant adverse effect, the NOAEL is unbounded. Bounded NOAEL 

and LOAEL values are only available from studies that identify both a NOEL and a LOAEL. 
 Appendix L 

ICF International L-5 DRAFT – December 2006 

Exhibit L-1. Parameter Values used in the Calculation of Avian Eco-SSLs for Pb 

(USEPA 2005b)a

Surrogate 

Receptor 

Group 

TRV for 

Pb (mg 

Pb/kg 

bw/day) 

Food 

Ingestion Rate 

(FIR) 

(kg food dw/ 

kg bw/day) 

Soil 

Ingestion as 

a Proportion 

of Diet (Psoil) 

Concentration of Pb in Biota 

Type i (Bi; mg Pb/kg dw biota) b

Eco-SSL 

(mg Pb/kg 

dw soil) 

Herbivore 

(dove) 1.63 0.190 0.139 ln(Bi) = 0.561 × ln(Soili) – 1.328; where i = plants 46 

Ground 

insectivore 

(woodcock) 

1.63 0.214 0.164 ln(Bi) = 0.807 × ln(Soili) – 0.218; 

where i = earthworms 11 

Carnivore 

(hawk) 1.63 0.0353 0.057 ln(Bi) = 0.4422 × ln(Soili) + 0.0761; where i = mammals 510 

a TRV = toxicity reference value; bw = body weight; dw = dry weight; mg = milligram; kg = kilogram 

b Bi = concentration in biota type (i), which represents 100 percent of the diet for the receptor in these cases 

1 To calculate the Eco-SSL, the HQ in the following equation is set equal to 1.0 and the equation is 

2 solved for Soilj, which becomes the Eco-SSL: 

3 

4 HQ = FIR × (Soilj × Psoil + Bi) / TRV

5 

6 where: 

7 

8 HQ = hazard quotient, set equal to 1.0 

9 FIR = food ingestion rate (kg food dry weight per kg wildlife body weight per day) 

10 Soilj = concentration of the chemical in soil (mg chemical/kg soil dry weight) 

11 Psoil = soil ingestion rate expressed as a proportion of the dry weight diet (unitless) 

Bi = concentration of chemical in the ith 12 type of biota consumed by the wildlife 

13 (mg chemical per kg biota dry weight) 

14 TRV = toxicity reference value (mg chemical per kg body weight per day) 

15 

16 To calculate an Eco-SSL for mammals, the potential exposures of three mammalian species are 

17 evaluated: an herbivore (vole), a ground insectivore (shrew), and a carnivore (weasel). The 

18 same diets are assumed for these species as for the three groups of birds (i.e., 100 percent of the 

19 diet consists of the single food type) (see Exhibit L-2). The Pb-specific parameter values are the 

20 TRV value for mammals and the results of the equations used to estimate the concentration of Pb 

21 in the diet items, which are the same used for the diets of the three corresponding bird species. 

22 The higher TRV for mammals than for birds is the reason for the generally higher Eco-SSLs for 

23 mammals than for birds. There also are differences in food and soil ingestion rates between 

24 birds and mammals. 
 Appendix L 

ICF International L-6 DRAFT – December 2006 

1 

Exhibit L-2. Parameter Values used in Calculation of the Mammalian Eco-SSLs for Pb 

(USEPA 2005b)a

Surrogate 

Receptor 

Group 

TRV for Pb 

(mg Pb/kg 

bw/day) 

Food 

Ingestion 

Rate (FIR) (kg 

food dw/kg 

bw/day) 

Soil 

Ingestion 

as a 

Proportion 

of Diet 

(Psoil) 

Concentration of Pb in Biota Type

i (Bi; mg Pb/kg dw biota) b

Eco-SSL 

(mg Pb/kg 

dw soil) 

Herbivore 

(vole) 4.70 0.0875 0.032 ln(Bi) = 0.561 × ln(Soili) – 1.328; where i = plants 1,200 

Ground 

insectivore 

(shrew) 

4.70 0.209 0.030 ln(Bi) = 0.807 × ln(Soili) – 0.218; 

where i = earthworms 56 

Carnivore 

(weasel) 4.70 0.130 0.043 ln(Bi) = 0.4422 × ln(Soili) + 0.0761; where i = mammals 460 

a bw = body weight; dw = dry weight 

b Bi = concentration in biota type (i), which represents 100% of the diet for the receptor 

2 L.3 Utility of the Pb Eco-SSLs for the Nationwide Pb NAAQS Review 

3 

4 An initial evaluation of the potential utility of the Pb Eco-SSLs for the Pb NAAQS review was 

5 conducted by comparing them to measured background levels of Pb in soils nationwide. The 

6 most comprehensive and systematic reporting of background Pb concentrations in soils of the 

7 United States to date was conducted by the U.S. Geological Survey (USGS) and reported by 

8 Shacklette and Boerngen (1984). A reanalysis of those data recently has been published by 

9 Gustavsson et al. (2001) who reprocessed the data from 1,323 sites in the conterminous United 

10 States to generate maps of the distribution of 7 major and 15 trace elements across the country. 

11 The data collection procedures and sampling locations were selected by Shacklette and Boerngen 

12 (1984) with the goal of defining “background” concentrations. Many samples were collected 

13 incidental to other ongoing studies; however, the same general sampling methods were applied in 

14 all locations and all samples were analyzed at the USGS laboratory in Denver, Colorado. Data 

15 for sampling sites where pollution and other anthropogenic effects may have influenced the 

16 concentrations were excluded. 

17 

18 Gustavsson et al. (2001) reported that most samples were collected at least 100 meters (m) from 

19 a road and at sites that had natural surficial materials supporting plant growth; however, 

20 Shacklette and Boerngen (1984) reported that many samples were within 100 m of a road, 

21 although none were near urban areas or highly traveled roads. In some areas, only agricultural 

22 fields could be sampled. Sampling locations were selected to be spaced at intervals of 

23 approximately 80 kilometers (km), and all samples were taken from a depth of 20 centimeters 

24 (cm) to avoid the plow zone in agricultural areas and surface contamination. Where soils were 

25 shallower, the soil immediately above the bedrock was sampled. The 10 ppm (mg/kg) detection 

26 limit for Pb was the same throughout the period of data collection, and analyses of 185 of 1,319 

27 (14 percent) samples did not detect Pb. 

28 

29 Exhibit L-3 shows the percentage of samples below and above the detection limit as read from a 

30 figure in Shacklette and Boerngen’s analysis (1984). Eighty-six percent of soil samples had Pb 

31 concentrations greater than the detection limit of 10 ppm, which is very close to the avian Eco32 SSL of 11 mg/kg. At a minimum, at least 70 percent of background soil concentrations exceeded 
 Appendix L 

ICF International L-7 DRAFT – December 2006 

1 the avian Eco-SSL of 11 mg/kg (i.e., 70 percent of soil samples had Pb concentrations greater 

2 than or equal to 15 ppm). Approximately 6 percent of soil samples had Pb concentrations greater 

3 than 56 mg/kg, which is the mammalian Eco-SSL. It is important to note that the soil samples in 

4 this USGS data set were collected between 1961 and 1975, and may or may not be representative 

5 of current ambient soil Pb concentrations in areas away from anthropogenic influences. 

6 

7 In the absence of documented impacts of Pb to wildlife nationwide, the results of this 

8 comparison suggest that the avian Eco-SSL is more conservative than necessary for purposes of 

9 the Pb NAAQS review. 

10 

11 Exhibit L-3. Distribution of Soil Pb Concentrations across the Conterminous United States 

12 (Shacklette and Boerngen 1984) 

Pb Concentration in 

Soil (ppm dry weight) 

Percentage of 

1,319 Samples 

Cumulative 

Percentage 

<10 14% 14% 

10 to 15 16% 30% 

15 to 20 30% 60% 

20 to 30 20% 80% 

30 to 50 14% 94% 

59 to 300 6% 100% 

300 to 700 <0.5% 100% 

13 

14 L.4 Development of SSVs for Use in the Pb NAAQS Review 

15 

16 This section describes the evaluation of data underlying the Pb Eco-SSL for birds for 

17 applicability to the Pb NAAQS review (Section L.4.1) and how SSVs were developed for the Pb 

18 NAAQS review using the basic Eco-SSL methodology (Section L.4.2). 

19 L.4.1 Evaluation of Eco-SSL Equation Parameter Values for Applicability to the 

20 Pb NAAQS Review 

21 

22 The avian Eco-SSL for Pb of 11 mg/kg is driven by the woodcock; the next highest avian Eco23 SSL is the value of 46 mg/kg for the mourning dove. The woodcock Eco-SSL is based on an 

24 assumed diet of 100 percent earthworms, a soil ingestion rate of 16.4 percent of its daily diet 

25 (dry-weight basis), and a food ingestion rate of 21.4 percent of its body weight daily. To ensure 

26 that most individuals in an exposed population would be protected, EPA attempts to estimate 

upper 90th 27 percentile values for both the soil and food ingestion rates for use in the Eco-SSL 

28 equation. 

29 

30 To estimate the concentration of Pb in earthworms living in soils, EPA used the analysis by 

31 Sample et al. (1998) of earthworm Pb uptake factors (UFs). Finding that UFs changed with 

32 changing soil concentrations, Sample et al. (1998) developed a non-linear empirical regression 

33 model to relate Pb concentrations in earthworms to Pb concentrations in soils. Although Sample 

et al. (1998) also specified an upper 90th 34 percentile UF based on the Pb earthworm/soil database, 

35 for the Pb Eco-SSLs, EPA chose to use the regression model of Pb uptake by earthworms which 

36 provides a central tendency estimate similar to a mean value. 

37 
 Appendix L 

ICF International L-8 DRAFT – December 2006 

1 The subsections below provide an examination of the assumptions used to derive each of the 

2 three exposure parameter values for woodcock (i.e., food ingestion rate, soil ingestion fraction, 

3 and prediction of Pb in earthworms) and a comment on the toxicity reference value for birds. 

4 

5 L.4.1.1 Food Ingestion Rate 

6 

7 EPA estimated typical and high-end food ingestion rates for woodcock based on two studies 

8 reporting its food ingestion rates: Sheldon (1967) and Stickel et al. (1965) (USEPA 2005c). 

9 Ingestion rates reported on a wet-weight (ww) basis (i.e., kg [food ww]/kg [woodcock body 

10 weight (bw)]/day) were converted to units of dry-weight (dw) (i.e., kg dw/kg bw/day) using 

11 dietary water content (if reported) or assumed water content for dietary items as provided in 

12 EPA’s Wildlife Exposure Factors Handbook (USEPA 1993). The two woodcock food ingestion 

13 rate studies are described and evaluated below. Note that the units for the food ingestion rate of 

14 kg/kg bw/day are equivalent to g/g bw/day, which are the units used below: 

15 

16 • Stickel et al. (1965) reported a mean wet-weight food ingestion rate of 0.77 g ww/g 

17 bw/day and a maximum value of 1.43 g ww/g bw/day for 23 captive woodcock (males 

18 and females included) fed a diet of heptachlor-treated earthworms (in Louisiana during 

19 the winter). Assuming that earthworms are 84 percent water, EPA estimated mean and 

20 maximum dry-weight food ingestion rates for these woodcock as 0.123 and 0.229 g dw/g 

bw/day, respectively, and used the maximum value to approximate a 90th 21 percentile 

22 (USEPA 2005c). For purposes of the Pb NAAQS review, it is noted that a maximum 

value for 23 birds is likely to exceed both the 90th and 95th 23 percentile values. Therefore, 

0.229 g dw/g bw/day is likely to be a slight overestimate of a true 90th 24 percentile value 

25 for the population. 

26 

27 • Stickel et al. (1965) also reported mean and maximum wet-weight food ingestion rates 

28 for 11 woodcock fed uncontaminated worms (the control group) of 0.73 and 1.27 g ww/g 

29 bw/day, respectively. The investigators noted that the food ingestion rates for the treated 

30 and control groups were not significantly different from each other. Assuming 84 percent 

31 water for the earthworms, the mean and maximum dry-weight food ingestion rates for the 

32 control woodcock would be 0.117 and 0.203 g dw/g bw/day, respectively. These food 

33 ingestion rates were not used in estimating the woodcock food ingestion rate for the Eco34 SSL. Because it is unclear whether heptachlor might affect woodcock feeding rates, 

35 these rates might be more appropriate than the rates based the heptachlor-exposed birds. 

36 A maximum food ingestion rate for 11 birds also is likely to be closer to a true population 

90th 37 percentile than is a maximum value for 23 birds. 
 Appendix L 

ICF International L-9 DRAFT – December 2006 

1 

2 • Sheldon (1967) measured food intake of an unspecified number of woodcock of both 

3 sexes in captivity in Massachusetts during the summer. Sheldon reported the intake rate 

4 to average 150 g of earthworms daily, noting that 150 g approximated the summer weight 

5 of the birds. That implies a wet-weight food ingestion rate of 1.0 g ww/g bw/day. 

6 Assuming 84 percent moisture content of the worms, EPA estimated a mean food 

ingestion rate of 1.6 g dw/g bw/day. To calculate a 90th 7 percentile values when both 

8 means and standard deviations (SDs) are reported, EPA used the following formula: 

9 

90th 10 percentile = mean + 1.282 SD 

11 

12 Where a SD was not available, as in this case, EPA added 25 percent, which resulted in a 

13 dry-weight food ingestion rate of 0.200 g dw/g bw/day. This approach is based on the 

14 observation that a typical coefficient of variation (CV) for food intake is approximately 

15 15 to 20 percent for birds and mammals (Nagy 2004). 

16 

17 For purposes of the Pb NAAQS review, however, the data reported by Sheldon (1967) 

18 were considered inadequate for estimating a food ingestion rate for woodcock because 

19 the sample size, SD, and range of food ingestion rates were not reported, and the birds 

20 might not have been weighed. 

21 

22 To ensure that the Eco-SSL for each surrogate species would protect the majority of individuals 

23 in a population, EPA uses the point estimates of high-end exposures (USEPA 2005a). For the 

24 woodcock, the food ingestion rate of 0.214 is the arithmetic mean of the two estimated high-end 

25 values noted above (i.e., the average of 0.229 and 0.200 g dw/g bw/day). 

26 

27 The food ingestion rate of 0.214 g dw/g bw/day is reasonable, although it also would be 

28 reasonable to use the data from woodcock fed uncontaminated earthworms in Stickel et al. 

29 (1965) and to exclude the values from Sheldon (1967). In that case, the high-end food ingestion 

30 rate would be 0.20 g dw/g bw/day. Use of upper-end estimates for all exposure parameters at the 

31 same time can significantly overestimate total exposure. If a mean value were to be used for this 

32 exposure parameter, a value of 0.73 g ww/g bw/day is recommended (mean value for woodcock 

33 fed uncontaminated worms from Stickel et al., 1965), which equals 0.12 g dw/g bw/day. 

34 
 Appendix L 

ICF International L-10 DRAFT – December 2006 

1 L.4.1.2 Soil Ingestion Rate 

2 

3 Soil intake is calculated as the total food ingestion rate (FIR) multiplied by soil ingestion fraction 

4 (or proportion) on a dry-weight basis: 

5 

6 Soil intake (g/day) = FIR × Psoil

7 

8 To estimate the soil ingestion fraction (Psoil), EPA (2005c) used the following model developed 

9 by Beyer et al. (1994): 

10 

11 Psoil = [b – y + (a × y)] / [(a × y) – c + b] 

12 

13 where: 

14 

15 Psoil = proportion of soil in diet (g soil/g dry mass diet) 

16 a = digestibility of food (g absorbed/g dry mass ingested) 

17 b = concentration of acid-insoluble ash in food (g/g dry mass) 

18 c = concentration of acid-insoluble ash in soil (g/g dry mass) 

19 y = concentration of acid-insoluble ash in feces (g/g dry mass) 

20 

21 For the development of Eco-SSLs, EPA wanted to ensure that the value for Psoil would be 

22 protective of the majority of all individuals in a population of the surrogate species. EPA 

23 therefore developed a probabilistic analysis for Psoil in which a probability distribution function 

24 (PDF) was assigned to each of the variables in the equation (i.e., to a, b, c, and y) and used in a 

Monte Carlo simulation to estimate the 90th 25 percentile of Psoil. For the woodcock, the following 

26 distributions were assumed: 

27 

28 • Digestibility of food (mean = 0.72; SD = 0.051; normally distributed); 

29 • Concentration of acid-insoluble ash in food (min = 0; max = 0.02; uniformly distributed); 

30 • Concentration of acid-insoluble ash in soil (min = 0.9; max = 1.0; uniformly distributed); 

31 and 

32 • Concentration of acid-insoluble ash in feces (mean = 0.22; SD = 0.146; normally 

33 distributed). 

34 

35 The mean and SD for the digestibility value, a, were taken from the Wildlife Exposure Factors 

36 Handbook (Table 4-3 in USEPA 1993). The values for b and c were assumed, based on 

37 information in Beyer et al. (1994). The mean and SD values for the concentration of acid38 insoluble ash in the feces, y, were the mean and SD values reported by Beyer et al. (1994) for the 

39 seven samples analyzed. EPA examined the results of the Monte Carlo analysis assuming 

40 certain parameters were correlated, and found no differences from the results of an analysis 

41 without correlated parameters. EPA therefore used the uncorrelated Monte Carlo analyses to 

estimate soil ingestion fractions. The mean soil ingestion fraction was 0.075, and the upper 90th 42 

43 percentile estimate of the soil ingestion fraction for the woodcock was 0.164 (Table 3 in USEPA 

44 2005c). The latter value was used to calculate the woodcock Eco-SSL. 

45 
 Appendix L 

ICF International L-11 DRAFT – December 2006 

1 The mean soil ingestion fraction reported by Beyer, et al. (1994) for the woodcock was 0.104 or 

2 10.4 percent of its dry weight diet. Beyer et al. (1994) assumed a digestibility of 55 percent for 

3 the woodcock diet based on data that indicated that the metabolizable energy coefficient for 

4 woodcock feeding on earthworms is 59 percent (Vander Haegen 1992) and the information that 

5 digestibilities calculated from dry matter tend to be slightly lower than those calculated from 

6 calories. If Beyer et al. (1994) had assumed a digestibility of 72 percent instead, as did EPA, 

7 then they would have estimated a soil ingestion fraction of 0.058. 

8 

9 Note that based on data presented in EPA’s Wildlife Exposure Factors Handbook (USEPA 

10 1993), a digestibility of 72 percent is more reasonable than a value of 55 percent for earthworms 

11 consumed by woodcock. Thus, it was concluded that a mean soil ingestion fraction for 

12 woodcock estimated using the data reported by Beyer et al. (1994) should be 0.058. 

13 

The upper 90th 14 percentile soil ingestion fraction of 0.164 estimated by EPA (2005c) from the 

15 Monte Carlo simulation is almost three times higher than the mean value of 0.058 that Beyer et 

16 al. (1994) would have calculated using the same digestibility assumption. Given EPA’s 

17 assumption of normality for parameters a and y, it appears that there must have been some other 

18 additional differences between the assumptions used by Beyer et al. (1994) to estimate a mean 

19 soil ingestion fraction and the assumptions used in the EPA Monte Carlo analysis. Otherwise, 

20 using the 25 percent approach (Nagy 2004) noted above for a normally distributed parameter, 

one would expect the 90th 21 percentile soil ingestion fraction to be closer to 0.073 (i.e., mean of 

22 0.058 + 25% of 0.058) than 0.164. 

23 

24 Beyer et al. (1994) appear to have used a value of 0.9 for c, the concentration acid-insoluble ash 

25 in soil, and 0.02 for b, the concentration of acid-insoluble ash in the diet, with a very limited 

26 discussion of the data supporting those assumptions. To be conservative for purposes of 

27 screening-level assessments for Superfund sites, EPA used 0.9 as a minimum value for c and 

28 0.02 as a maximum value for b (USEPA 2005c). A more appropriate approach for the Pb 

29 NAAQS review is to assume a distribution centered on 0.9 for c and 0.02 for b. 

30 

31 In conclusion, the soil ingestion fraction of 0.164, or 16.4 percent of the dry-weight diet, used in 

estimating the woodcock Eco-SSL is likely to be higher than the 90th 32 percentile value that might 

33 have been calculated if Beyer et al.’s (1994) values of c and b were used as central tendency 

34 values in EPA’s Monte Carlo analysis. Evidence includes that assuming a digestibility of 72 

35 percent, the mean soil ingestion fraction estimated from the data presented in Beyer et al. (1994) 

would be 0.058, or 5.8 percent of the dry-weight diet, and a 90th 36 percentile might have been 

37 closer to 0.073 (see above). Therefore, it was concluded that a soil ingestion fraction of 0.073 

38 (see above) to 0.116 (i.e., 0.058 x 2 to be conservative) would be appropriate for the Pb NAAQS 

39 review. 

40 

41 L.4.1.3 Diet Composition 

42 

43 The assumed diet of 100 percent earthworms for the Eco-SSL follows EPA guidance for 

44 Superfund screening-level assessments (USEPA 1998b). For the Pb NAAQS review, a more 

45 nationally representative diet composition is appropriate. In seven studies of woodcock diets in 

46 North America summarized in EPA’s Wildlife Exposure Factors Handbook (USEPA 1993), the 
 Appendix L 

ICF International L-12 DRAFT – December 2006 

1 proportion of earthworms in the diet ranged from 30 to 99 percent (i.e., values of 30, 67.8, 71, 

2 83.4, 87, 87.4, and 99+). The remainder of the diet consisted of other soil invertebrates such as 

3 lepidopteran, dipteran, and coleopteran larvae. The average value is 75 percent earthworms in 

the diet, and the 90th 4 percentile is 92 percent. 

5 

6 For the Pb NAAQS review, the average value of 75 percent or a high-end value of 90 percent 

7 were recommended for the fractions of the woodcock diet to be comprised of earthworms. The 

8 remainder of the diet would be 25 or 10 percent soil arthropods, respectively. 

9 

10 L.4.1.4 Earthworm Accumulation of Pb from Soils 

11 

12 To estimate the accumulation of Pb by earthworms from soils, EPA used the Sample et al. (1998) 

13 analysis. For that analysis, Sample et al. (1998) used most of the available earthworm Pb 

14 accumulation studies to generate a model data set (119 observations); the remainder (126 

15 observations) was used as a “validation” data set to test the accuracy and predictive utility of the 

16 UFs and regression models. Earthworm-to-soil uptake factors (UFs) were calculated for Pb and 

17 were found to have a non-linear relationship with soil Pb concentrations. Sample et al. found 

18 that a simple regression model of natural-log-transformed concentrations in soil and earthworms 

19 did provide a significant fit to the data (p < 0.001). Sample et al. (1998) also developed multiple 

20 regression models incorporating information on soil pH and soil calcium (Ca), both of which can 

21 affect the tendency of Pb to partition to water. 

22 

23 The multiple regression models found that inclusion of soil pH contributed significantly to model 

24 fit for Pb. Soil Ca also contributed significantly to model fit for Pb. However, an attempt to 

25 evaluate the contribution of both Ca and pH to model fit resulted in a small sample size that did 

26 not show a significant contribution of both parameters at the same time. However, for a 

27 screening level risk assessment for which soil Ca, and even soil pH, might not have been 

28 measured, a simple regression model that does not include pH or Ca is more useful. 

29 

30 During validation, Sample et al. (1998) found no significant differences in the simple regression 

31 equations for the “model” and “validation” data sets. Both data sets therefore were combined to 

32 develop a final regression model for the combined data set of 245 observations (Table 12 in 

33 Sample et al. 1998), which is what EPA used in the Eco-SSL derivation: 

34 

35 ln(Bi) = 0.807 × ln(Soili) – 0.218 

36 

Note that although the correlation coefficient, R2 37 , for this model based on 245 data points was 

38 only moderate (i.e., 0.58), the probability that the correlation was due to chance alone was less 

than 1/10th 39 of a percent (i.e., p < 0.0001). The Standard Error (SE) of the estimate of the slope, 

40 0.807, was ± 0.044. The SE of the estimate of the intercept, -0.218, was ± 0.245. 

41 

Sample et al. (1998) also provided the upper 90th 42 percentile UF based on the distribution of the 

43 UFs in the Pb earthworm/soil database for use as a high-end value if needed. For the Eco-SSLs 

for Pb, EPA chose not to use the upper 90th 44 percentile UF, and instead used the point estimates 

45 provided by the regression model (i.e., a central tendency estimate similar to a mean value). 

46 
 Appendix L 

ICF International L-13 DRAFT – December 2006 

1 For the Pb NAAQS review, the point estimates provided by the regression model are used to 

2 estimate Pb concentrations in earthworms based on Pb concentrations in soils. This regression 

3 provides a central-tendency estimate. 

4 

5 L.4.1.5 Arthropod Accumulation of Pb from Soils 

6 

7 In the past year, Sample and colleagues have developed models to predict Pb uptake by soil 

arthropods:2 8 

9 

10 ln(Bi) = 0.70 × ln(Soili) – 1.63 

11 

12 The data are from 24 studies, including 10 North American locations: British Columbia, 

13 Delaware, Illinois, Maryland, Missouri, Montana, Oklahoma, Pennsylvania, Tennessee, Virginia, 

14 and Wyoming. Sixty-eight percent of all observations were for Pb, zinc, copper, and cadmium. 

15 The soil arthropods include spiders, centipedes, millipedes, isopods, coleopterans (e.g., beetles), 

16 hymenopterans (e.g., wasps), orthopterans (e.g., grasshoppers), and lepidopterans (e.g., moths). 

17 For Pb, both insects and the non-insect arthropods appeared to have similar Pb uptake rates, and 

18 therefore all data were combined to estimate a single regression equation for soil arthropods 

(above). The correlation coefficient, R2 19 , for this regression based on 197 data points is 0.55, 

20 with a significance level of p < 0.0001. 

21 

22 The arthropod model for Pb uptake from soil predicts lower concentrations in the arthropods than 

23 in earthworms at the same soil concentrations. Exhibit L-4 shows the differences over a range of 

24 soil concentrations. At a soil concentration near EPA’s Eco-SSL for woodcock, 11 mg/kg, the 

25 concentration of Pb in soil arthropods is less than 20 percent of the concentration of Pb in 

26 earthworms. 

27 

28 Exhibit L-4. Estimated Arthropod Pb Concentrations as a Percentage of Estimated 

29 Earthworm Pb Concentrations (mg/kg dry weight) for Same Soil Concentrations 

Soil [Pb] Earthworm [Pb] Soil Arthropod [Pb] Arth./ Earthworm [Pb] (%) 

1 0.80 0.20 25.0 

10 5.2 0.98 18.9 

50 19 3.0 15.8 

100 33 4.9 14.9 

1,000 210 25 11.8 

10,000 1360 123 9.05 

30 

31 From this information, it was concluded that for the analyses proposed for this Pb NAAQS 

32 review, a nationally representative SSV for the woodcock would be based on two diet 

33 components, earthworm and soil arthropods, and the regression model for Pb uptake from soils 

34 for arthropods should be used to predict Pb concentrations in that portion of the diet. 

35 

 

2

 Unpublished data and models by Brad Sample and Christine Arenal from CH2M Hill, Sacramento, California; 

PowerPoint presentation summarizing results provided to EPA by Brad Sample on June 29, 2006. 
 Appendix L 

ICF International L-14 DRAFT – December 2006 

1 L.4.1.6 Bioavailability of Pb in Soil and in Diet 

2 

3 For the Eco-SSL methodology, EPA stated that it was assumed that Pb was 100 percent absorbed 

4 from the diet or from soil, and therefore the assimilation efficiencies in the original equation 

5 (Equation 4-1 of USEPA 2005a) are set equal to 1.0 and removed from the equation. This 

6 follows EPA’s guidance for Superfund screening-level ecological risk assessments (USEPA 

7 1998b). However, studies of bioavailability of Pb from the diet or from soils always indicate 

8 bioavailability factors of less than 100 percent. Therefore, for purposes of the Pb NAAQS 

9 review, the bioavailability of Pb was examined. 

10 

11 The first consideration is how the Eco-SSL TRV for Pb was obtained (i.e., whether was it based 

12 on a Pb concentration as administered in food or water or an estimated absorbed dose). For the 

13 TRV for Pb for birds, the NOAEL is expressed as Pb administered in an experimental diet rather 

14 than an absorbed dose. If Pb in the experimental diet and Pb in natural diets and soils are equally 

15 bioavailable, then no correction is needed for relative bioavailability (or relative assimilation 

16 efficiency). However, Pb often is mixed into experimental animal diets (e.g., an artificial 

17 pelleted dry diet) in a form (e.g., Pb acetate) that may be more bioavailable than the Pb in a 

18 natural diet or in soils. Therefore, it may be appropriate to assign a lower relative assimilation 

19 efficiency (AE) for Pb in the natural diet and in soils than in the experimental diet upon which 

20 the TRV is based. 

21 

22 A literature search was conducted of bioavailability and AEs for birds and mammals for Pb from 

23 the diet, soils, and water using 20 DIALOG databases: Toxfile, Environmental Sciences, Biosis 

24 Previews, CSA Life Sciences Abstracts, Enviroline, Pollution Abstracts, National Technical 

25 Information Services (NTIS), BioEngineering Abstracts, Environmental Engineering Abstracts, 

26 AGRICOLA, CAB Abstracts, AGRIS, Pascal, WasteInfo, Wilson Appl. Sci & Tech Abs, Biol. 

27 & Agric. Index, Water Resources Abstracts, Zoological Record Online, ELSEVIER BIOBASE, 

28 and Aquatic Science & Fisheries Abstracts. None of the references identified discussed the 

29 absolute bioavailability or AE for Pb acetate or other forms of Pb typically added to 

30 experimental pelleted diets for birds or mammals or the absolute bioavailability of Pb in any 

31 natural media. These analyses, therefore, depend on evidence of relative rather than absolute 

32 AE. The results of the search were limited to less than 500 titles for purposes of this risk 

33 screening assessment; therefore, it is possible that some references were missed. 

34 

35 For purposes of the human exposure and health risk assessments, EPA has assumed that the 

36 absolute bioavailability of Pb in water and diet is 50 percent and in soils ingested by children is 

37 30 percent (USEPA 1994). That means that the relative bioavailability of Pb in soils compared 

38 with diet and water is 60 percent (i.e., 0.30 divided by 0.50) for children (USEPA 1994). Studies 

39 supporting equal AEs for Pb from food and water often use Pb acetate, or other highly soluble 

40 forms of Pb (e.g., Pb chloride) mixed with food and water (e.g., Mahaffey et al. 1980). 

41 

42 The Agency for Toxic Substances and Disease Registry (ATSDR) has summarized available data 

43 indicating that water-soluble Pb (e.g., from Pb acetate or Pb chloride) is 40 to 50 percent 

44 absorbed following ingestion by infants and children, whereas adults absorb only 3 to 10 percent 

45 of Pb (if not fasting). Similar differences in absorption of Pb with age are observed in monkeys 

46 and rats (ATSDR 2005). 
 Appendix L 

ICF International L-15 DRAFT – December 2006 

1 

2 There are data to indicate that Pb ingested with food is absorbed less well than Pb ingested in 

3 water and that Pb ingested in soils is less well absorbed than Pb in food. For example, James et 

4 al. (1985) found absorption of a tracer dose of Pb acetate in water to be approximately 63 percent 

5 when ingested by fasted subjects but only 3 percent when the dose was administered with a meal. 

6 Overall, fed-to-fasted ratios of Pb absorption for adult humans ranged from 0.04 to 0.20 in four 

7 studies reviewed by ATSDR (2005), indicating that absorption of water-soluble Pb when 

8 accompanied by food is generally 4 to 20 percent of Pb absorbed when administered in water 

9 when a subject has no food in the gastrointestinal tract. A comparison of Pb absorbed from soil 

10 from the Bunker Hill Superfund site by adult humans indicated 26 and 2.5 percent absorption by 

11 fasted adults and those ingesting the soil with a meal, respectively (Maddaloni et al. 2005). Note 

12 that the amount absorbed from soil by fasted adults (i.e., 26 percent) was approximately half that 

13 absorbed with food by fasted adults (i.e., 63 percent). 

14 

15 Few references identified discussed the relative AE of Pb added to pelleted diets of experimental 

16 animals and Pb in natural diets or soils. One study did quantify the relative oral bioavailability 

17 of Pb in soil collected from a former smelter site in Utah compared with the bioavailability of Pb 

18 acetate mixed in a purified pelleted diet fed to rats (Schoof et al. 1995). They found a relative 

19 AE of 41 percent (Pb in smelter soil compared to Pb acetate added to the diet). None of the 

20 identified references quantified the relative AE of Pb acetate added to pelleted diets of 

21 experimental animals to the AE of Pb in natural diets. 

22 

23 Ruby et al. (1999) published a review of gastrointestinal bioavailability studies suitable for use in 

24 human exposure and health risk assessments that included a large database. The bioavailabilities 

25 of Pb in a variety of soils were expressed as a proportion of the bioavailability of soluble Pb in 

26 drinking water. Pb contaminated soils from a variety of sources (e.g., residential areas, and areas 

27 near tailings, mills, slags, and smelters) were added to the diet of swine and weanling rats. 

28 Nineteen studies with swine resulted in a mean relative bioavailability of 0.50 (SD of 0.28; range 

of 0.01 to 0.90)3 29 . These results indicate that Pb in soils from the environment (not laboratory 

30 soils mixed with Pb acetate or another form of Pb) are, on average, half as well assimilated by 

31 swine as Pb in water. Nine studies with weanling rats resulted in a mean relative bioavailability 

of 0.21 (SD of 0.13; range of 0.093 to 0.41)3 32 . Assuming 100 percent assimilation of Pb from 

33 water by rats, this indicates that only 20 percent of Pb in soils is, on average, assimilated by rats. 

34 

35 Overall, the studies discussed above suggest that the oral bioavailability of Pb in soils or food for 

36 mammals is between 3 and 50 percent of its oral bioavailability when added as soluble Pb acetate 

37 to food or water. Therefore, the conclusion was reached that the AE of Pb from natural diets or 

38 from soils is no more than 50 percent of the AE of Pb in the experimental pellet diets to which 

39 Pb acetate is added. When the TRV is based on experiments conducted with Pb acetate added to 

40 a dry pellet experimental diet, an AE value of 0.50 is assumed for the screening-level assessment 

41 for the Pb NAAQS review. 

42 

 

3

 Mean and SD values calculated by ICF from Table 1 of Ruby et al. 1999. 
 Appendix L 

ICF International L-16 DRAFT – December 2006 

1 L.4.1.7 Toxicity Reference Value (TRV) 

2 

3 For birds, the geometric mean NOAEL for adequate Pb toxicity studies of growth and 

4 reproduction across species was calculated as 10.9 mg/kg bw/day. That value is higher than the 

5 lowest bounded LOAEL for one study. Therefore, the highest bounded NOAEL that was lower 

6 than the lowest bounded LOAEL was used to set the TRV for Pb for birds of 1.63 mg/kg bw/day 

7 in the development of the Eco-SSL for Pb. This value is not overly conservative because 2 of 10 

8 reproductive LOAEL values were lower than 1.63 mg/kg bw/day (those two were unbounded, 

9 meaning a NOAEL had not been identified). 

10 

11 There are uncertainties associated with having only 10 reproductive toxicity studies for birds for 

12 Pb. Nonetheless, the TRV should be protective because it is based on a NOAEL value, and 

13 populations of birds may well be able to sustain some loss of reproductive success at the 

14 individual level without consequences on population size. 

15 L.4.2 Calculation of SSVs for Pb for Use in the Pb NAAQS Review 

16 

17 Based on the evaluation of individual parameter values discussed above, a Pb SSV for woodcock 

18 was estimated using the parameter values identified for the Pb NAAQS review in Section L.4.1. 

19 The basic equation for estimating the Eco-SSL for a bird or mammal as described in Section 

20 L.2.2 is: 

21 

22 1.0 = FIR × [(Soilj × Psoil) + Bi] / TRV

23 

24 Therefore, the equation for Pb is: 

25 

26 TRV = FIR × [(Soilj × Psoil) + exp(0.807 × ln(Soilj) – 0.218)] 

27 

28 The preceding equation assumes 100 percent earthworms in the diet and equal bioavailability of 

29 Pb in the experimental diet used to develop the TRV, in the natural diet, and in soils. To 

30 estimate the Eco-SSL, one solves for Soilj. 

31 

32 To develop a Pb SSV for woodcock for use in the Pb NAAQS review, soil arthropods were 

33 included as part of the diet, and 50 percent was used as the relative AE or bioavailability of Pb in 

34 the natural diet or soil. In this case, the equation is: 

35 

36 TRV = FIR × AE × [(Soilj × Psoil) + (Fearthworms × Bearthworms) + (Fsoil_arthropods × Bsoil_arthropods)] 

37 

38 where: 

39 

40 AE = relative assimilation efficiency for Pb in natural diets and soils 

41 compared with Pb added to a laboratory diet 

42 Fearthworms = fraction of the diet consisting of earthworms 

43 Bearthworms = concentration of Pb in the earthworms (mg/kg dry weight) 

44 Fsoil_arthropods = fraction of the diet consisting of soil arthropods

45 Bsoil_arthropods = concentration of Pb in the arthropods (mg/kg dry weight) 
 Appendix L 

ICF International L-17 DRAFT – December 2006 

1 

2 The equation for Pb then becomes: 

3 

4 TRV = FIR × AE × [(Soilj × Psoil) + (Fearthworms × (exp(0.807 × ln(Soilj) – 0.218))) + 

5 (Fsoil_arthropods × (exp(0.70 × ln(Soilj) – 1.63))) ] 

6 

7 The preceding equation is solved for Soilj to find the SSV. 

8 

9 Exhibit L-5 shows the results of using the parameter values developed for the Pb NAAQS review 

10 in the equation to estimate an SSV for woodcock exposed to Pb-contaminated soils. 

11 

12 For comparison with the Eco-SSL, the first row shows parameter values used to derive the Eco13 SSL for woodcock. The second row indicates that by using values calculated for the Pb NAAQS 

review for AE and for the 90th 14 percentile values for the food ingestion rate (FIR), soil ingestion 

15 fraction, and the fraction of the diet that is earthworms, the SSV is 34 mg/kg. If one uses the 

16 average value for the fraction of the diet that is earthworms instead, the SSV for woodcock is 

17 38 mg/kg. Finally, if one uses the average value for all parameters, the SSV for woodcock is 

18 83 mg/kg. 

19 

Exhibit L-5. Development of the Woodcock SSV for Pba

Estimate AE 

TRV for Pb 

(mg Pb/kg 

bw/day) 

Food 

Ingestion 

Rate (FIR) 

(kg food 

dw/kg 

bw/day) 

Soil 

Ingestion 

as a 

Proportion 

of Diet 

(Psoil) 

Fraction 

of Diet 

Earthworms 

Fraction of 

Diet Soil 

Arthropods 

SSV (mg 

Pb/kg 

dw soil) 

EPA Eco-SSL 

(USEPA 2005a) 100% 1.63 0.214 0.164 100% 0% 11 

90th percentile for 

all parameters; AE 

= 0.50b 50% 1.63 0.20 0.114 90% 10% 34 

90th percentile for 

FIR and soil 

ingestion; mean 

fraction diet; AE = 

0.50c

50% 1.63 0.20 0.114 75% 25% 38 

Mean value for all 

parameters; AE = 

0.50d 50% 1.63 0.12 0.058 75% 25% 83 

a Abbreviations: AE = relative assimilation efficiency for Pb in natural diet and soils compared with AE of water 

soluble Pb added to the experimental diet used to derive the toxicity reference value (TRV); bw = body weight; dw 

= dry weight 

b Uses 90th percentile values for FIR and soil ingestion rate with 90th percentile proportion of the diet equal to 

earthworms. 

c Uses 90th percentile values for FIR and soil ingestion rate with mean proportion of the diet equal to earthworms. 

d Uses average value for FIR, soil ingestion rate, and proportion of the diet comprised of earthworms. 

Note: All estimates use central tendency estimate of concentration of Pb in earthworms and soil arthropods. 

20 

21 When estimating a benchmark to use when screening for ecological risks, it is most appropriate 

to use 90th 22 percentile values for no more than two parameters in the same exposure equation. 

23 Therefore, 38 mg/kg was identified as the most appropriate estimate of an SSV for birds for the 

24 screening-level ecological risk assessment in the Pb NAAQS review. This value is based on a 
 Appendix L 

ICF International L-18 DRAFT – December 2006 

1 conservative estimate of the relative bioavailability of Pb in soil and natural diets compared with 

2 water soluble Pb added to an experimental pellet diet. A recent site-specific determination found 

that a soil concentration of 490 mg/kg4 3 is protective of birds that consume soil invertebrates at 

4 that location. These findings in a site-specific study suggest that the values of 38 mg/kg or even 

5 83 mg/kg might still be overly conservative. However, for purposes of the Pb NAAQS review, a 

6 value of 38 mg/kg is appropriate as a “no-effect” level for the initial screening-level ecological 

7 risk assessment. A value of 83 mg/kg might be suitable for use as a “possible-effect level” for a 

8 risk screening assessment. Where that value is exceeded, a more refined ecological risk 

9 assessment would be required to define the possible magnitude of ecological risks if that 

10 information is needed for a risk management decision. 

11 

12 To develop a mammalian SSV for the Pb NAAQS review, a simple calculation is to apply an AE 

13 of 50 percent to the mammalian Eco-SSL. That would result in an SSV based on the shrew of 

14 112 mg Pb/kg soil dry weight. The value of 112 mg/kg is likely to be more conservative than 

15 necessary because the proportion of earthworms in the diet of shrews is less than 100 percent 

16 (data available in USEPA 1993). 

 

4

 Brad Sample, personal communication, June 29, 2006, with Margaret McVey; data not yet available for peer 

review. 
 Appendix L 

ICF International L-19 DRAFT – December 2006 

1 

2 References 

3 

4 Agency for Toxic Substances and Disease Registry (ATSDR). (2005) Draft Toxicological 

5 Profile for Lead. Atlanta, GA: U.S. Department of Health and Human Services, Pubic Health 

6 Service. September. 

7 

8 Beyer, W.N., Connor, E.E., and Gerould, S. (1994) Estimates of soil ingestion by wildlife. J. 

9 Wildl. Manage. 58(2):375-382. 

10 

11 Gustavsson, N., Bǿlviken, B., Smith, D.B., and Severson, R.C. (2001) Geochemical 

12 Landscapes of the Conterminous United States – New Map Presentations for 22 Elements. U.S. 

13 Geological Survey Professional Paper 1648. Washington, DC: U.S. Department of the Interior. 

14 Available online at: http://geology.cr.usgs.gov/pub/ppapers/p1648/ 

15 

16 James, H.M., Hilburn, M.E., and Blair, J.A. (1985) Effects of meals and meal times on uptake 

17 of lead from the gastrointestinal tract of humans. Hum. Toxicol. 4: 401-407. 

18 

19 Maddaloni,M., Bellew,M., Diamond,G., Follansbee,M., Gefell,D., Goodrum,P., Johnson,M., 

20 Koporec,K., Khoury,G., Luey,J., Odin,M., Troast,R., Van,L.P., and Zaragoza,L. (2005) Assessing Lead 

21 Risks at Non-Residential Hazardous Waste Sites. Human and Ecological Risk Assessment 11:967-1005 

22 

23 Mahaffey, K.R., Rader, J.I., Schaefer, J.M., and Dramer, S.N. (1980) Comparative toxicity to rats of 

24 lead acetate from food or water. Bull. Environ. Contam. Toxicol. 25: 541-546. 

25 

26 Nagy, K.A. (2004) Personal communication with EPA (As cited in USEPA 2005c .) 

27 

28 Ruby, M.V., Schoof, R., Brattin, W., et al. (1999) Advances in evaluating the oral bioavailability of 

29 inorganics in soil for use in human health risk assessment. Environ. Sci. Technol. 33(21): 3697-3705. 

30 

31 Sample, B.E., Beauchamp, J.J., Efroymson, R.A., Suter, G.W. II, and Ashwood, T.L. (1998) 

32 Development and Validation of Bioaccumulation Models for Earthworms. Oak Ridge, TN: Oak 

33 Ridge National Laboratory. ES/ER/TM-86/R3. 

34 

35 Schoof, R. A., Butcher, M. K., Sellstone, C., Ball, R. W., Fricke, J. R., Keller, V., and Keehn, B. (1995) 

36 An Assessment of Lead Absorption from Soil Affected by Smelter Emissions. Environmental 

37 Geochemistry and Health. 17(4): 189-199. 

38 

39 Shacklette, H.T., and Boerngen, J.G. (1984) Element Concentrations in Soils and Other Surficial 

40 Materials of the Conterminous United States. U.S. Geological Survey Professional Paper 1270. 

41 Washington, DC: U.S. Government Printing Office. 63 pp. 

42 

43 Sheldon, W.G. (1967) The Book of the American Woodcock. Amherst, MA: University of 

44 Massachusetts Press. 

45 
 Appendix L 

ICF International L-20 DRAFT – December 2006 

1 Stickel, W.H., Hayne, D.W., Stickel, L.F. (1965) Effects of heptachlor-contaminated 

2 earthworms on woodcocks. J. Wildl. Manage. 29: 132-146. 

3 

4 U.S. Environmental Protection Agency (USEPA). (1993) Wildlife Exposure Factors Handbook, 

5 Volumes I and II. Washington, DC: Office of Research and Development. EPA/600/R6 93/187a,b. Prepared by ICF Consulting, M. McVey et al. 

7 

8 U.S. Environmental Protection Agency (USEPA). (1994) Guidance Manual for the Integrated 

9 Exposure Uptake Biokinetic Model for lead in Children. Washington, DC: Office of Emergency 

10 and Remedial Response. EPA/540/R-93/081. 

11 

12 U.S. Environmental Protection Agency (USEPA). (1998a) Guidelines for Ecological Risk 

13 Assessment. Washington, DC: Risk Assessment Forum. EPA/630/R-95/002F. 

14 

15 U.S. Environmental Protection Agency (USEPA). (1998b) Ecological Risk Assessment 

16 Guidance for Superfund: Process for Designing and Conducting Ecological Risk Assessments,

17 Interim Final. Washington, DC: Office of Solid Waste and Emergency Response. EPA 540/R18 97/006; OSWER 9285.7-25; PB97-963211. 

19 

20 U.S. Environmental Protection Agency (USEPA). (2005a) Guidance for Developing Ecological 

21 Soil Screening Levels. Washington, DC: Office of Solid Waste and Emergency Response. 

22 OSWER Directive 9285.7-55. November 2003, Revised 2005. 

23 

24 U.S. Environmental Protection Agency (USEPA). (2005b) Ecological Soil Screening Levels for 

25 Lead, Interim Final. Washington, DC: Office of Solid Waste and Emergency Response. OSWER 

26 Directive 9285.7-61. 

27 

28 U.S. Environmental Protection Agency (USEPA). (2005c) Guidance for Developing Ecological 

29 Soil Screening Levels (Eco-SSLs), Attachment 1-4: Exposure Factors and Bioaccumulation 

30 Models for Derivation of Wildlife Eco-SSLs. Washington, DC: Office of Solid Waste and 

31 Emergency Response. OSWER Directive 9285.7-55. November 2003, Revised February 2005. 

32 

33 Vander Haegen, W. M. (1992). Bioenergetics of the American woodcock during the breeding 

34 season on Moosehorn National Wildlife Refuge, Maine, Ph.D. Thesis, Univ. Maine, Orono. (As 

35 cited in Beyer et al. 1994.) 
Appendix M 

Sediment Screening Levels 

 Appendix M 

 

ICF International M-1 DRAFT – December 2006 

1 Appendix M summarizes sediment ecotoxicity screening values for the protection of aquatic 

2 communities that comply with EPA guidance for use in screening-level ecological risk 

3 assessments. Sediment screening values have been developed for the protection of benthic 

4 aquatic community—none of which are based on wildlife ingestion of sediments—and include 

5 EPA regional screening values, National Oceanic and Atmospheric Administration (NOAA) 

6 marine values, Canadian freshwater values, United States “consensus” freshwater values, and 

7 EPA’s national-level equilibrium partitioning approach to deriving sediment quality criteria for 

8 freshwaters. 

9 

10 Many of the sediment screening values include more than one effect level for potential use. This 

11 fact reflects in part the difficulty in assessing a “single point” criterion across all sediment 

12 conditions that might protect 95 percent of the aquatic species, as has been EPA’s tradition for 

13 deriving Ambient Water Quality Criteria (AWQC) for aquatic organisms exposed to chemicals 

14 in the water column. Overall, various definitions of effect levels have been used: no effect, 

15 threshold for effect, low effect/low risk of effect, may have an effect, probable adverse effect, 

16 and severe effect. Some criteria present two effect levels and others present three effect levels. 

17 The two-effect-level benchmarks generally have a no-effect or low-risk-of-effect level and a 

18 probable- or severe-effect level. The three-effect-level benchmarks have a no- or low-effect 

19 level, a possible- or threshold-effect level, and a probable-adverse-effect level. 

20 

21 The sediment screening values are expressed as total Pb in sediments on a dry weight basis, with 

22 no adjustment for differing sediment conditions, with the exception of EPA’s equilibrium 

23 partitioning approach. The latter essentially provides equations to estimate the dissolved 

24 concentration of Pb in sediment pore waters for comparison with the chronic AWQC based on 

25 several sediment characteristics. Because EPA’s equilibrium partitioning approach requires data 

26 on acid volatile sulfide (AVS), total organic carbon (TOC), and fraction organic carbon (FOC) 

27 (USEPA 2005), it cannot be used in this screening assessment because these data have not been 

28 identified for the waterbodies of interest in the primary Pb smelter case study. Note that these 

29 characteristics are not included in national water quality databases and historically have rarely 

30 been measured at any location. 

31 

32 Two of the available screening ecotoxicity criteria for freshwater sediments, the Canadian 

33 Sediment Quality Guidelines and the consensus-based values, were evaluated for use in the 

34 surface water and sediment screening assessment. These two criteria are described in this 

35 appendix to highlight different approaches to identifying specific benchmark effect levels and to 

36 describe the approach selected for this pilot phase analysis (See Sections M.1 and M.2). 
 Appendix M 

 

ICF International M-2 DRAFT – December 2006 

1 M.1 Canadian Sediment Quality Guidelines 

2 

3 U.S. EPA Region 6 uses the Canadian Sediment Quality Guidelines, threshold-effect levels 

4 (TELs) (Smith et al. 1996). The value for Pb is 35 mg/kg dry sediment. The Canadian values 

5 are adopted from an approach used by NOAA with some modifications for freshwaters and an 

6 expansion of the database to incorporate freshwater sediment toxicity data. The sediment 

7 concentrations for the effects data set and the no-effects data set were arranged in ascending 

8 order of chemical concentrations, and TELs and probable-effects levels (PELs) were derived for 

9 those chemicals having at least 20 data entries in both data sets (from Appendix A of TNRCC 

10 2001). 

11 

12 The TEL was calculated to be the geometric mean of (1) the 15th percentile concentration of the 

13 effects data set and (2) the 50th percentile concentration of the no-effects data set. The TEL was 

14 intended to estimate the concentration for a given chemical below which adverse biological 

15 affects only rarely occurred. The PEL was calculated to be the geometric mean of (1) the 50th 

16 percentile concentration of the effects data set and (2) the 85th percentile of the no-effects data 

17 set. The PEL was intended to represent the concentration for a given chemical above which 

18 adverse biological affects frequently occurred. Smith et al. (1996) evaluated the reliability of the 

19 Canadian guidelines, and compared them with other guidelines. With the exception of the TEL 

20 for total DDT, the reliability of the TELs appeared to be high based on the lack of observed 

21 adverse effects at concentrations below the TELs. Overall, the authors concluded that the TELs 

22 and PELs were comparable to other sediment quality assessment approaches, and that the TELs 

23 could be used with a high degree of confidence to indicate chemical concentrations below which 

24 adverse biological effects would not be expected to occur. 

25 

26 M.2 Consensus Approach 

27 

28 Both EPA Regions 4 and 5 use sediment toxicity benchmarks derived by a consensus approach 

29 as described by MacDonald et al. (2000). The consensus approach has been adopted by the State 

30 of Florida in its Numerical Sediment Quality Assessment Guidelines for Florida Inland Waters, 

31 Technical Report (MacDonald et al. 2003). This report resulted from a cooperative Freshwater 

32 Sediment Quality Assessment Initiative that began in 2000 and that included the Florida 

33 Department of Environmental Protection (FDEP), EPA, and the U.S. Geological Survey (USGS), 

34 with participants from the U.S. Fish and Wildlife Service (USFWS), NOAA, consultants, 

35 academics, county governments, and water management districts. The Initiative includes three 

36 elements, one of which is the establishment of numerical, sediment quality assessment guidelines 

37 (SQAGs) for assessing the potential for adverse biological effects associated with exposure to 

38 contaminated sediments. The effects-based SQAGs for the benthic community are intended to 

39 identify two levels of contaminants in sediments: (1) concentrations that are unlikely to cause 

40 adverse effects, or threshold effect concentrations (TECs), and (2) concentrations that are likely 

41 to cause adverse effects on sediment-dwelling organisms, or probable effect concentrations 

42 (PECs). 

43 

44 Based on an evaluation of eight distinct approaches for developing “sediment quality guidelines” 

45 (SQGs) (i.e., sediment quality criteria, standards, or objectives, depending on the agency), the 
 Appendix M 

 

ICF International M-3 DRAFT – December 2006 

1 Initiative working group recommended the consensus-based approach. The eight approaches 

2 reviewed were: 

3 

4 • Screening level concentration approach; 

5 • Effects range approach; 

6 • Effects level approach; 

7 • Apparent effects threshold approach; 

8 • Equilibrium partitioning approach; 

9 • Logistic regression modeling approach; 

10 • Consensus approach; and 

11 • Tissue residue approach. 

12 

13 The report also describes the four basic types of information that are commonly used to assess 

14 contaminated sediments: whole-sediment and pore-water chemistry data; whole-sediment 

15 toxicity data; benthic invertebrate community structure data; and bioaccumulation data. 

16 

17 The consensus-based TECs are calculated by determining the geometric mean of the SQGs 

18 available for that chemical. Likewise, consensus-based PECs are calculated by determining the 

19 geometric mean of the PEC-type values. The geometric mean, rather than the arithmetic mean, 

20 is used because it provides an estimate of central tendency that is not unduly affected by outliers 

21 and because the SQGs might not be normally distributed. Consensus-based TECs or PECs are 

22 calculated only if three or more published SQGs are available for a chemical substance or group 

23 of substances (MacDonald et al. 2000). 

24 

25 The consensus-based TEC for Pb of 35.8 mg/kg dry weight (Table 4.4 in MacDonald et al. 2003, 

26 from MacDonald et al. 2000) was calculated as the geometric mean of the following values: 

27 

28 • Lowest-observed effect level (LEL) of 31 mg/kg from Persaud et al. (1993); 

29 • Threshold effect level (TEL) of 35 mg/kg from Smith et al. (1996); 

30 • Effects range-low (ER-L) value of 35 mg/kg from Long and Morgan (1991); 

31 • Threshold-effect level for the amphipod Hyalella azteca in 28-day tests (TEL-HA28) of 

32 37 mg/kg (USEPA 1996); and 

33 • Minimal effect threshold (MET) of 42 mg/kg from Environment Canada (EC) and 

34 Ministere de l’Environnement du Quebec (MENVIQ) (1992). 

35 

36 The consensus-based PEC for Pb of 128 mg/kg dry weight (Table 4.5 in MacDonald et al. 2003, 

37 from MacDonald et al. 2000) was calculated as the geometric mean of the following values: 

38 

39 • Severe effect level (SEL) of 250 mg/kg (Persaud et al. 1993); 

40 • Probable effect level (PEL) of 91.3 mg/kg (Smith et al. 1996); 

41 • Effects range-median (ER-M) value of 110 mg/kg (Long and Morgan 1991); 

42 • Probable effect level for Hyalella azteca in 28-day tests (PEL-HA28) of 82 mg/kg 

43 (USEPA 1996); and 

44 • Toxic effect threshold (TET) of 170 mg/kg from (EC and MENVIQ 1992). 

45 
 Appendix M 

 

ICF International M-4 DRAFT – December 2006 

1 The working group considered the consensus-based TEC and PEC values to be appropriate for 

2 the United States as a whole, and some analyses were conducted to determine whether they were 

3 suitable for Florida sediments. Based on those analyses, the working group concluded that they 

4 were appropriate (MacDonald et al. 2003). 

5 

6 
 Appendix M 

 

ICF International M-5 DRAFT – December 2006 

1 References 

2 

3 EC and MENVIQ (Environment Canada and Ministere de l’Environnement du Quebec). (1992) 

4 Interim Criteria for Quality Assessment of St. Lawrence River Sediment. Ottawa, Ontario: 

5 Environment Canada. ISBN 0-662-19849-2. 

6 

7 Long, E.R., and Morgan, L.G. (1991) The Potential for Biological Effects of Sediment-sorbed 

8 Contaminants Tested in the National Status and Trends Program. NOAA Technical Memorandum 

9 NOS OMA 52. Seattle, WA: National Oceanic and Atmospheric Administration. 175 pp and 

10 Appendices. 

11 

12 MacDonald, D.D., Ingersoll, C.G., and Berger, T.A. (2000) Development and evaluation of 

13 consensus-based sediment quality guidelines for freshwater ecosystems. Arch. Environ. Contam. 

14 Toxicol. 39: 20-31. 

15 

16 MacDonald, D.D., Ingersoll, C.G., Smorong, D.E., Lindskoog, R.A., Sloane, G., and Biernacki, T. 

17 (2003) Development and Evaluation of Numerical Sediment Quality Assessment Guidelines for Florida 

18 Inland Waters. Technical Report. Prepared for: Florida Department of Environmental Protection, 

19 Tallahasee, Florida. Prepared by: MacDonald Environmental Sciences, Lt., British Columbia and U.S. 

20 Geological Survey, Columbia Missouri. January. 

21 

22 Persaud, D., Jaagumagi, R., and Hayton, A. (1993) Guidelines for the Protection and 

23 Management of Aquatic Sediment Quality in Ontario. Canada: Ontario Ministry of the 

24 Environment and Energy. August. 

25 

26 Smith, S.L., MacDonald, D.D., Keenleyside, K.A., Ingersoll, C.G., and Field. L.J. (1996) A 

27 preliminary evaluation of sediment quality assessment values for freshwater ecosystems. J. 

28 Great Lakes Res. 22(3):624-638. 

29 

30 Texas Natural Resource Conservation Commission (TNRCC). (2001) Guidance for Conducting 

31 Ecological Risk Assessments Remediation Sites in Texas. RG-263 (revised). December. 

32 Available at http://www.tceq.state.tx.us/comm_exec/forms_pubs/pubs/rg/rg-263_189521.pdf 

33 

34 U.S. Environmental Protection Agency (USEPA). (1996) Calculation and Evaluation of 

35 Sediment Effect Concentrations for the Amphipod Hyalella azteca and the Midge Chironomus 

36 ripariu. EPA 905-R96-008, Great Lakes National Program Office, Chicago, Ill. 

37 

38 U.S. Environmental Protection Agency (USEPA). (2005) Procedures for the Derivation of 

39 Equilibrium Partitioning Sediment Benchmarsk (EBSs) for the Protection of Benthic Organisms: 

40 Metal Mixtures (Cadmium, Copper, Lead, Nickel, Silver, and Zinc). Washington, DC: Office of 

41 Research and Development. EPA-600-R-02-011. 

42