Skip Links

USGS - science for a changing world

Scientific Investigations Report 2012–5011

Prepared in cooperation with the Naval Air Station Patuxent River

Groundwater Quality and Occurrence and Distribution of Selected Constituents in the Aquia and Upper Patapsco Aquifers, Naval Air Station Patuxent River, St. Mary’s County, Maryland, July 2008

By Cheryl A. Dieter, Kimberly W. Campo, and Anna C. Baker

Thumbnail of and link to Title Page (2.78 MB)Abstract

The Naval Air Station Patuxent River in southern Maryland has continued to expand in the first decade of the 21st century, contributing to rapid population growth in the surrounding area. The increase in population has caused State and County water managers and others to be concerned about the impact of population growth on the quantity and quality of groundwater supplies. The U.S. Geological Survey has been investigating the groundwater resources of the air station since 1998. As part of that ongoing investigation, groundwater was sampled in 2008 in six wells in the Aquia aquifer and two wells in the Upper Patapsco aquifer in the vicinity of Naval Air Station Patuxent River and Webster Outlying Field. Groundwater samples were analyzed for basic chemistry (field parameters, major ions, and nutrients) as well as several water-quality issues of concern including the occurrence of arsenic and tungsten, and saltwater intrusion.

The results of the 2008 groundwater-quality sampling indicate that the overall quality of groundwater in the Aquia aquifer has not changed since 1943; data are too limited to determine if groundwater quality has changed in the Upper Patapsco aquifer. At one well in the Aquia aquifer, the arsenic concentration exceeded the U.S. Environmental Protection Agency standard for drinking water. Arsenic was not detected in samples from the Upper Patapsco aquifer. Tungsten concentrations were detected at low concentrations near the laboratory reporting level in all eight samples. There was no evidence of saltwater intrusion in any of the wells.

First posted February 23, 2012

For additional information contact:
Director
U.S. Geological Survey
MD-DE-DC Water Science Center
5522 Research Park Drive
Baltimore, MD 21228

(443) 498–5500

Part or all of this report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge.


Suggested citation:

Dieter, C.A., Campo, K.W., and Baker, A.C., 2012, Groundwater quality and occurrence and distribution of selected constituents in the Aquia and Upper Patapsco aquifers, Naval Air Station Patuxent River, St. Mary’s County, Maryland, July 2008: U.S. Geological Survey Scientific Investigations Report 2012–5011, 16 p.



Contents

Abstract

Introduction

Purpose and Scope

Description of Study Area and Well Numbering System

Previous Investigations

Sample Collection, Analysis, and Quality Control

Sample Collection and Analysis

Quality Control

Groundwater Quality and Occurrence and Distribution of Selected Constituents

Groundwater-Quality Characterization of the Aquia and Upper Patapsco Aquifers

Comparison of Groundwater Quality in the Aquia and Upper Patapsco Aquifers, 1943–2008

Arsenic and Tungsten

Saltwater Intrusion

Summary and Conclusions

Acknowledgments

References Cited


Accessibility FOIA Privacy Policies and Notices

USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: https://pubs.usgs.gov/sir/2012/5011/
Page Contact Information: Contact USGS
Page Last Modified: Thursday, January 10, 2013, 07:46:29 PM