PUBLIC HEALTH ASSESSMENT
NAVAL INDUSTRIAL RESERVE ORDNANCE PLANT
FRIDLEY, ANOKA COUNTY, MINNESOTA
EPA FACILITY
ID: MN3170022914
September 28, 1999
Prepared by:
Minnesota Department of Health
Under Cooperative Agreement with the
Agency for Toxic Substances and Disease Registry
TABLE OF CONTENTS
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A. Site Description and History
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A.1 Naval Industrial Reserve Ordnance Plant (NIROP)
Superfund Site
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A.1.a NIROP Operable Unit 1 (OU1) plant wide groundwater
A.1.b NIROP Operable Unit 2 (OU2) Unsaturated Zone Outside Building
A.1.c NIROP Building In Saturated Zone (OU3)
A.1.d NIROP Storage Area C RCRA Site
C. Demographics, Land Use, and Natural Resources Use
D. General Regional Issues
E. Community Involvement
F. Agency For Toxic Substances and Disease Registry (ATSDR) Involvement
EVALUATION OF CONTAMINATION AND EXPOSURE
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B.1 Naval Industrial Reserve Ordnance Plant (NIROP) Superfund Site
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B.1.a Ground Water Contamination Operable Unit 1 (OU1)
B.1.b On Site Subsurface Source Areas In Unsaturated Zone Outside Naval Industrial Reserve Ordnance Plant Building Operable Unit 2 (OU2)
B.1.c On Site Subsurface Source Areas in Saturated and Unsaturated Zone Beneath the Naval Industrial Reserve Ordnance Plant (NIROP) Building and on Site Subsurface Areas Outside the NIROP Building in Saturated Zone Operable Unit 3 (OU3)
APPENDIX A: SURFACE WATER IMPACT MEMORANDUM
APPENDIX B: MINNEAPOLIS WATER WORKS TREATMENT PROCESS
APPENDIX C: NIROP TCE CONCENTRATIONS IN MONITORING AND SHALLOW DRIFT WELLS FROM 1993-1997
APPENDIX D: EXCEEDANCES OF HRLS AND MCLS IN NIROP WELLS
APPENDIX E: EXCEEDANCES OF HRLS AND MCLS IN UDLP WELLS
APPENDIX F: TCE REMOVED FROM UDLP GROUNDWATER EXTRACTION SYSTEM
Figure 1. Naval Industrial Reserve Ordnance Plant, United Defense Limited Partnership Inc.
Figure 2. Site Location Map
Figure 3. Former Industrial Process Areas within the Main Industrial Plant Building
Figure 4. Anoka County Park Cone Penetrometer Data
Figure 5. Environmental Condition of Property Map
Figure 6. 1996 Annual Monitoring Report Trichloroethylene (TCE) Concentration (µg/l) in the Shallow Drift Groundwater Regime
Figure 7. 1997 Annual Monitoring Report Trichloroethylene (TCE) Concentration (µg/l) in the Shallow Monitoring Wells
Figure 8. Location of Sanitary Sewer, Watermain, and Property Boundaries
Figure 9. United Defense Limited Partnership Inc. Trichloroethylene Concentration (ug/l) Contours, 1996 Annual Monitoring Report Confined Aquifer
Figure 10. United Defense Limited Partnership Trichloroethylene Concentration Contours 1996 Annual Monitoring Report Unconfined Aquifer Sampled 10/9/96
Figure 11. Groundwater Remediation System
Figure 12. Location of Containment and Treatment Facility
Figure 13. Final Cover Containment and Treatment Facility
Figure 14. Synthetic Underliner for the Containment and Treatment Facility
Figure 15. Leachate Collection and Leak Detection Piping Details for the Containment and Treatment Facility
Figure 16. Design Configuration of Gas Collection System Containment and Treatment Facility (FMC Northern Ordnance Plant)
Figure 17. Surrounding Land Use Naval Industrial Ordnance Plant
Figure 18. TCE Levels in Finished Water at Minneapolis Water Works
Figure 19. TCE in Finished Water at MWW
Figure 20. FMC TCE Data for the MWW Intakes
Figure 21. TCE River Samples
Figure 22. UDLP Monitoring Well TCE Levels
Figure 23. Sampling Point 27-S Contaminant Concentrations
