Water Modeling Reports and Studies

 

DISCLAIMER


Calibrating Distribution System Models with Fire-Flow Testspdf icon
Field methods used to model the current water distribution system at Camp Lejeune.


Example of Water Modeling Study: Tom Rivers Study
This summary of findings was developed to provide an overview of the historical reconstruction analysis conducted by ATSDR and NJDHSS. A full description of the analysis is available in a comprehensive report.


Tarawa Terrace

The Agency for Toxic Substances and Disease Registry is the lead agency determining if exposures to PCE and TCE in drinking water are associated with adverse health outcomes among the children of Marines stationed at Marine Corps Base Camp Lejeune, North Carolina.

A new analysis shows that former Marines and their families who lived in Tarawa Terrace family housing units during the period November 1957 through February 1987 received contaminated drinking water containing the dry-cleaning solvent, tetrachloroethylene (PCE). Levels of PCE in the drinking water during this period exceeded the amount currently allowed by the Environmental Protection Agency (EPA) under the Safe Drinking Water Act.

Exposure to PCE-contaminated drinking water occurred because PCE leaked into groundwater that supplied the Tarawa Terrace drinking water system from a dry-cleaner located outside the Camp Lejeune military base. In 1987, the military base shut down the Tarawa Terrace water treatment plant because of PCE contamination of the drinking water.


ATSDR Response to Department of Navy Letter on Assessment of Tarawa Terrace Water Modelingpdf icon [PDF, 5241KB]
On June 19, 2008, the Department of Navy (DON) provided ATSDR with technical comments on the Tarawa Terrace water-modeling analyses. On March 10, 2009, ATSDR responded to the DON comments. The DON letter and the ATSDR response are contained in the following PDF file.


Summary of the water contamination situation at Camp Lejeune
Summary of the water modeling contamination situation at Camp Lejeune including water treatment plants serving base housing areas, sources of contamination, concentrations of chemicals detected, and water modeling results.


Chapter A

 

Executive Summary

This report concludes in its analyses of the Tarawa Terrace drinking water system at U.S. Marine Corps Base Camp Lejeune, North Carolina that former Marines and their families who lived in Tarawa Terrace family housing units during the period November 1957 through February 1987 received drinking water contaminated with the dry-cleaning solvent tetrachloroethylene (PCE) at levels above the current maximum contaminant level (MCL) of 5 ppb. [PDF, 2190KB]

Master Platepdf icon
This is a map of the location of wells and boreholes, groundwater-flow model boundary, and present-day (2004) water distribution systems serving Tarawa Terrace, Holcomb Boulevard, and Hadnot Point and vicinity, U.S. Marine Corps Base Camp Lejeune, North Carolina. [PDF, 1951KB]

Summary of Findingspdf icon
This is the full 116-page report of ATSDR’s analyses of the Tarawa Terrace Drinking Water System at U.S. Marine Corps Base Camp Lejeune, North Carolina. ATSDR concludes in its analyses that former Marines and their families who lived in the Camp Lejeune Tarawa Terrace family housing units during the period November 1957 through February 1987 received drinking water contaminated with the dry-cleaning solvent tetrachloroethylene (PCE) at levels above the current maximum contaminant level (MCL) of 5 ppb. [PDF, 6288KB]

To order a 3 DVD set that contains the information and data sources used to conduct the historical reconstruction analysis please send a request to atsdrcamplej@cdc.gov.

**NOTE**: ATSDR has been made aware that on some personal computer systems, the model input data files provided on DVD #3 cannot be copied. These files are provided below and can be downloaded. These files are identical to the files provided on DVD #3 that accompanies the Chapter A report.

** Download Model Input Data Fileszip icon [ZIP, 8802KB]**


Chapter B
This report, Chapter B in the Tarawa Terrace series, provides detailed analyses and interpretations of well and geohydrologic data used to develop the geohydrologic framework of the Castle Hayne aquifer system at Tarawa Terrace and vicinity.

You may download the report as 1 file or in 4 sections:

Chapter B – Entire Reportpdf icon [PDF, 19448KB]

Or

Chapter B – Section 1pdf icon [PDF, 5331KB]
Chapter B – Section 2pdf icon [PDF, 5223KB]
Chapter B – Section 3pdf icon [PDF, 5285KB]
Chapter B – Section 4pdf icon [PDF, 4755KB]


Chapter Cpdf icon
This report, Chapter C, describes the development and calibration of a digital model applied to the simulation of groundwater flow within the Tarawa Terrace aquifer and Upper Castle Hayne aquifer system at and in the vicinity of the Tarawa Terrace housing areas. [PDF, 5347KB]


Chapter Dpdf icon
The Chapter D report provides abridged information describing the most salient properties and biodegradation of 27 chlorinated volatile organic compounds detected during groundwater studies in the United States. This information is condensed from an extensive list of reports, papers, and literature published by the U.S. Government, various State governments, and peer-reviewed journals. The list includes literature reviews, compilations, and summaries describing volatile organic compounds in ground water. [PDF, 2274KB]


Chapter Epdf icon
This report, Chapter E, describes the occurrence and distribution of tetrachloroethylene and related contaminants within the Upper Castle Hayne Aquifer System at and in the vicinity of the Tarawa Terrace housing area. There also is a brief description of the occurrence and distribution of benzene, toluene, ethylene, and xylene (BTEX) and related compounds. [PDF, 2821KB]


Chapter Fpdf icon
This report, Chapter F, describes the development and calibration of a digital model applied to the simulation of the fate and transport of tetrachloroethylene (PCE) within the Tarawa Terrace aquifer and the Castle Hayne aquifer system at and in the vicinity of the Tarawa Terrace housing area, U.S. Marine Corps Base Camp Lejeune, North Carolina. [PDF, 5166KB]


Chapter Gpdf icon
This report, Chapter G, describes the three-dimensional simulation of the fate, degradation, and advective dispersive transport of PCE and associated degradation by-products—TCE, trans-1,2-dichloroethylene (1,2-tDCE), and vinyl chloride (VC)—within the Tarawa Terrace aquifer and Castle Hayne aquifer system at Tarawa Terrace and vicinity. [PDF, 11486KB]


Chapter Hpdf icon
This report, Chapter H, describes the effect of groundwater pumping variation on arrival times of tetrachloroethylene (PCE) at water-supply wells and the Tarawa Terrace water treatment plant, U.S. Marine Corps Base Camp Lejeune, North Carolina. [PDF, 7990KB]


Chapter Ipdf icon
This report, Chapter I, provides detailed information and interpretations of parameter sensitivity, variability, and uncertainty associated with model simulations of groundwater flow, contaminant fate and transport, and distribution of drinking water at Tarawa Terrace and vicinity. It relies on information, data, and simulation results from calibrated models presented in previously published ATSDR reports on Tarawa Terrace – Chapters A, B, C, E, and F. [PDF, 9616KB]

**NOTE**: A CD-ROM, included with the report, contains calibrated model input files for use with the public domain model codes MODFLOW, MT3DMS, EPANET 2, and PEST.

** Download Model Input Data Fileszip icon [ZIP, 17.4 MB]**

Graph and Table of Simulated and Measured Concentrations of PCE
This graph and table shows the levels of tetrachloroethylene (PCE) that may have been in your drinking water at Tarawa Terrace during your tour of duty at Camp Lejeune.

Graphpdf icon [PDF, 541KB]
Tablepdf icon [PDF, 123KB]


Report of the Camp Lejeune Water-Modeling Expert Panel
During March 28–29, 2005, an Expert Peer Review Panel evaluated ATSDR’s water-modeling activities in support of the current study of childhood birth defects and cancer at U.S. Marine Corps Base Camp Lejeune, North Carolina.

Star-News Forum Panel Meeting on Camp Lejeune
These slides were presented at an information-sharing forum about the Camp Lejeune water contamination at Kenan Auditorium on the campus of the University of North Carolina Wilmington on August 31, 2007.

Use of Water Modeling Methodspdf icon [PDF, 3217KB]

Childhood adverse health outcomes and drinking water exposures to chlorinated solvents at the U.S. Marine Corps Base Camp Lejeune, North Carolinapdf icon [PDF, 1032KB]

 

Page last reviewed: July 6, 2009