Open-File Report 03-81
U.S. Geological Survey Open-File Report 03-81, 37 pages (Published 2003)
By Paul J. Blanchard
Prepared in Cooperation with BERNALILLO COUNTY
This report is available online as a citation and a group of images at the USGS Publications Warehouse.
Since 1990, the U.S. Geological Survey, in cooperation with the Bernalillo County Environmental Health Department, has periodically collected water samples for laboratory chemical analysis from a network of 20 wells in eastern Bernalillo County to monitor the effects of domestic wastewater disposal. The depth to water also has been measured in these wells to monitor the effects of ground-water withdrawals. From September 2001 through June 2002, water samples were again collected from and depth to water was measured in these wells where access was available. Two wells were removed from the network because water-level measurement and sample collection were no longer feasible, and 13 wells were added to the network. Of the 31 wells in the network, water samples were collected from 8 wells, depth to water was measured in 5 wells, and both activities were conducted at 18 wells. Sample analyses included determination of concentrations of dissolved nitrite plus nitrate, dissolved chloride, and total organic carbon, which frequently are used as indicators of contamination from domestic wastewater disposal. Concentrations of dissolved nitrite plus nitrate ranged from 0.050 to 20.0 milligrams per liter, and concentrations in two samples exceeded the U.S. Environmental Protection Agency primary drinking water standard of 10 milligrams per liter.
Concentrations of dissolved chloride ranged from 8.2 to 400 milligrams per liter and concentrations in four samples exceeded the U.S. Environmental Protection Agency secondary drinking water standard of 250 milligrams per liter. The concentration of total organic carbon in one sample was 9.4 milligrams per liter; concentrations in all other samples were 4.3 milligrams per liter or smaller. No U.S. Environmental Protection Agency drinking water standards have been established for organic carbon. Primary and secondary drinking water standards pertain to human health concerns and esthetics, respectively.
Abstract
Introduction
Purpose and scope
Description of study area
Monitoring-well network and data collection during 2001-02
Methods of data collection and laboratory analysis
Acknowledgments
Water-quality and depth-to-water data
References cited
This report is available online as a citation and a group of images at the USGS Publications Warehouse.
Blanchard, Paul J., 2003, Water quality and depth to water, 2001-02, and graphs of selected constituents and depth to water, period of record through 2002, in selected wells, eastern Bernalillo County, New Mexico: U.S. Geological Survey Open-File Report 03-81
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