Expert Panel Assessing ATSDR's Methods and Analyses for Historical
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Expert Panel Assessing ATSDR’s Methods and Analyses for Historical Reconstruction of Groundwater Resources and Distribution of Drinking Water at Hadnot Point, Holcomb Boulevard, and Vicinity, U.S. Marine Corps Base Camp Lejeune, North Carolina April 29 –30, 2009 NORTH CAROLINA Montford Point ONSLOW COUNTY Tarawa Terrace New River Edited by: Air Station Holcomb Boulevard Morris L. Maslia New Hadnot Prepared for: Point Agency for Toxic Substances U.S. Marine Corps Base and Disease Registry Camp Lejeune Atlanta, Georgia River Courthouse Onslow Rifle Bay Beach Range Prepared by: Eastern Research Group, Inc. Atlanta, Georgia Atlantic Ocean N Cover. Location of U.S. Marine Corps Base Camp Lejeune, North Carolina, and historical water-supply areas. Expert Panel Assessing ATSDR’s Methods and Analyses for Historical Reconstruction of Groundwater Resources and Distribution of Drinking Water at Hadnot Point, Holcomb Boulevard, and Vicinity, U.S. Marine Corps Base Camp Lejeune, North Carolina April 29–30, 2009 Edited by: Morris L. Maslia Prepared for: Agency for Toxic Substances and Disease Registry Atlanta, Georgia Prepared by: Eastern Research Group, Inc. Atlanta, Georgia Atlanta, Georgia December 2009 ii Suggested citation: Maslia ML, editor, 2009, Expert Panel Assessing ATSDR’s Methods and Analyses for Historical Reconstruction of Groundwater Resources and Distribution of Drinking Water at Hadnot Point, Holcomb Boulevard, and Vicinity, U.S. Marine Corps Base Camp Lejeune, North Carolina, April 29–30, 2009: Prepared by Eastern Research Group, Inc., Atlanta, GA: Prepared for Agency for Toxic Substances and Disease Registry (ATSDR), Atlanta, GA, 149 p. iii Contents Executive Summary .......................................................................................................................................1 1.0 Introduction ...........................................................................................................................................3 1.1 Background ..............................................................................................................................3 1.2 Meeting Organization .............................................................................................................9 2.0 ATSDR Objectives and Goals ............................................................................................................10 2.1 Opening Remarks ..................................................................................................................10 2.2 Statement by the Chair .........................................................................................................11 2.3 Introduction of ATSDR Study Team and Stakeholders ....................................................11 2.4 Summary of ATSDR’s Epidemiological Health Study .......................................................11 3.0 Summary of Water-Modeling Activities .........................................................................................13 3.1 Overview of Water-Modeling Activities ............................................................................13 3.1.1 Completed Water-Modeling Activities at Tarawa Terrace .................................13 3.1.2 Status of Activities and Analyses at Hadnot Point, Holcomb Boulevard, and Vicinity .................................................................................................................14 3.2 Summary of Contaminant Source Areas and Data: Hadnot Point, Holcomb Boulevard, and Vicinity ........................................................................................14 3.2.1 Available Pumpage Data ..........................................................................................14 3.2.2 Data for Water Treatment Plant: Supplied and/or Delivered Water .................16 3.2.3 Contamination Analysis ............................................................................................16 3.3 Well Capacity History: Hadnot Point and Holcomb Boulevard ......................................16 3.4 Subsurface Mass Computation: Hadnot Point, Holcomb Boulevard, and Vicinity .....17 3.4.1 Overview of Subsurface Mass Computation ........................................................17 3.4.2 Data Preparation and Interpolation ........................................................................17 3.5 Reconstruction of Historical Contaminant Concentrations: A Computational Method .....................................................................................................18 3.6 Approach to Numerical Groundwater-Flow and Contaminant Fate and Transport Modeling ...............................................................................................................19 3.6.1 Overview of the Hadnot Point/Holcomb Boulevard Modeling Approach ........19 3.6.2 Proposed Approach...................................................................................................19 3.7 Historical Reconstruction of the Water-Distribution Systems: Hadnot Point and Holcomb Boulevard .......................................................................................................20 3.7.1 Overview of Water-Distribution Systems ...............................................................20 3.7.2 Modeling Water-Distribution Systems ...................................................................20 3.7.3 Modeling for the Hadnot Point Water-Distribution System ................................20 3.7.4 Modeling for the Holcomb Boulevard Water-Distribution System ....................20 3.7.5 Information for Modeling the Interconnection Periods .....................................22 3.7.6 Considerations for Historical Reconstruction .......................................................22 iv 4.0 Panel Discussions ..............................................................................................................................22 4.1 General Questions on the Epidemiological Study ............................................................22 4.2 Hadnot Point and Holcomb Boulevard Interconnection .................................................24 4.3 Considerations for Water-Modeling Activities .................................................................25 4.4 Contaminant Concentration Distribution ...........................................................................30 4.5 Control Theory Based Time-Series Analysis ....................................................................30 4.6 Additional Data Considerations .........................................................................................31 4.7 Current Situation at Camp Lejeune ....................................................................................32 5.0 Public Statements to the Panel ........................................................................................................32 5.1 Public Statement by Mr. Jerome Ensminger ....................................................................32 5.1.1 Document Discussion ..............................................................................................32 5.1.2 Discussion between Mr. Ensminger and the Panel ............................................34 5.2 Public Statement by Dr. Dan Waddill .................................................................................34 5.2.1 Groundwater-Modeling Issues to Consider .........................................................35 5.2.2 Discussion between Dr. Waddill and the Panel ...................................................36 6.0 Summary of Panel Members’ Recommendations and ATSDR’s Responses ...........................37 6.1 Modeling ..................................................................................................................................37 6.2 Calibration ...............................................................................................................................38 6.3 Epidemiological Study Needs ..............................................................................................38 6.4 Interconnection between Hadnot Point and Holcomb Boulevard .................................39 6.5 Additional Data Needs ..........................................................................................................39 6.6 Time Line of Project ...............................................................................................................39 7.0 Acknowledgments..............................................................................................................................40 8.0 References ..........................................................................................................................................40 Appendixes A– F ...........................................................................................................................................41 Compact Disc (CD–ROM) ...............................................................................................Inside back cover Summary report, vebatim transcripts, and presentations (PDF file format) Figures 1–2. Maps showing— 1. Location of U.S. Marine Corps Base, Camp Lejeune, North Carolina ......................4 2. Historical water-supply areas and water-distribution systems serving Hadnot Point, Holcomb Boulevard, and vicinity, U.S. Marine Corps Base Camp Lejeune, North Carolina .......................................................................5 3. Diagram showing chronology of Hadnot Point and Holcomb Boulevard