Hydrogeologic setting, water levels, and quality of water from supply wells at the US Marine Corps Air Station, Cherry Point, North Carolina

Lloyd, O. B., Jr.; Daniel, C. C., III

Abstract:

The Marine Corps Air Station is located in the Coastal Plain province of North Carolina. Four freshwater aquifers of sand and limestone underlie the area to a depth of about 500 feet. Saline water occurs below this depth. The aquifers are separated by three confining units that are thin and discontinuous in the southern part. Water supply is obtained from 195- to 330 feet wells in the Castle Hayne aquifer. Many wells are near landfills that have received hazardous wastes. Groundwater withdrawals have reduced hydraulic heads in the Castle Hayne some 20 feet around active production wells, creating potential for downward movement of contaminated water from the surface and for upward movement of saline water that occurs at depth. Chemical analyses of water from the Castle Hayne aquifer indicate median concentrations of iron and manganese are 0.78 and 0.08 milligrams per liter, respectively, and lead and (or) nickel exceed drinking water standards in three wells. Chloride increased from 10 to more than 40 milligrams per liter in the deepest operating well over a 45-year period. Benzene concentrations range from 0.5 to 1.9 milligrams per liter in the southern part of the Air Station but were below the 5 milligrams per liter maximum contaminant level for drinking water. Fatty acids were found in concentrations as much as 28 micrograms per liter in water from wells in an area centered around the intersection of Roosevelt Boulevard and Slocum Road. Resampling is needed to verify all constituents that indicate contamination.

Genre:

USGS Numbered Series

ProdID:

28422

Citation Author:

Lloyd, O. B., Jr.; Daniel, C. C., III

Citation Contributing Office:

Citation Datum:

Citation Day:

Citation Edition:

Citation Editor:

Citation End Page:

Citation Issue:

Citation Keywords:

Citation Language:

ENGLISH

Citation Larger Work Title:

Citation LatN:

Citation LatS:

Citation LonE:

Citation LonW:

Citation Month:

Citation No Pagination:

Citation Number Of Pages:

Citation Online Only Flag:

Citation Phsyical Description:

iv, 76 p. :ill., maps ;28 cm.

Citation Projection:

Citation Public Comments:

Citation Publisher:

U.S. Geological Survey,

Citation Series:

Water-Resources Investigations Report

Citation Series Code:

WRI

Citation Series Number:

88-4034

Citation Search Results Text:

Hydrogeologic setting, water levels, and quality of water from supply wells at the US Marine Corps Air Station, Cherry Point, North Carolina; 1988; WRI; 88-4034; Lloyd, O. B., Jr.; Daniel, C. C., III

Citation Start Page:

Citation Volume:

Citation Year:

1988

Type:

citation/reference

Text:

Hydrogeologic setting, water levels, and quality of water from supply wells at the US Marine Corps Air Station, Cherry Point, North Carolina; 1988; WRI; 88-4034; Lloyd, O. B., Jr.; Daniel, C. C., III