PUBLIC HEALTH ASSESSMENT

LONGHORN ARMY AMMUNITION PLANT
KARNACK, HARRISON COUNTY, TEXAS
EPA FACILITY ID: TX6213820529

July 9, 1999

Prepared by:

The Texas Department of Health
Under Cooperative Agreement with the
Agency for Toxic Substances and Disease Registry

TABLE OF CONTENTS

LIST OF FIGURES

LIST OF TABLES

SUMMARY

INTRODUCTION

BACKGROUND

Site Description
Site History

ENVIRONMENTAL CONTAMINATION / EXPOSURE PATHWAYS / PUBLIC HEALTH IMPLICATIONS

Introduction
Environmental Contamination
Exposure Pathways
No Apparent Public Health Hazard Situations
Evaluation of Possible Surface Water Exposure Pathways
Evaluation of Possible Sediment Exposure Pathways
Evaluation of Possible Soil Exposure Pathways
Evaluation of Possible Wasteline Material Exposure Pathways
Evaluation of Possible Groundwater Exposure Pathways
Evaluation of Possible Exposure to Physical and Other Hazards

COMMUNITY HEALTH CONCERNS/ CHILD HEALTH INITIATIVE/HEALTH OUTCOME

Community Health Concerns
Child Health Initiative
Health Outcome Data

PUBLIC HEALTH ACTION PLAN

Conclusions
Actions Planned
Actions Ongoing
Actions Recommended

PREPARERS OF THE REPORT

REFERENCES

APPENDICES

Acronyms and Abbreviations
Definitions
Status of Sites at Longhorn
Areas of Known or Suspected Contamination
Areas of Suspected Contamination at Longhorn Investigated and Determined to Require No Further Action by USATHMA
Public Water Supply Chemical Test Results
Perchlorate Fact Sheet

LIST OF FIGURES

Figure 1 - Site Location and Demographic Statistics Within 1 Mile of Site

Figure 2 - Longhorn Army Ammunition Plant Creeks and Streams at Longhorn

Figure 3 - Longhorn Army Ammunition Plant General Site Information

Figure 4 - Groundwater Elevation Map

LIST OF TABLES

Table 1. Contaminants Detected in Various Media and Exceeding Comparison Values Longhorn Army Ammunition Plant

Table 2. Exposure Pathways - Longhorn Army Ammunition Plant

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