Accession Number:

ADA439024

Title:

Selected Natural Attenuation Monitoring Data, Operable Unit 1, Naval Undersea Warfare Center, Division Keyport, Washington, June 2003

Descriptive Note:

Open file rept.

Corporate Author:

GEOLOGICAL SURVEY WASHINGTON DC

Personal Author(s):

Report Date:

2004-01-01

Pagination or Media Count:

27.0

Abstract:

Previous investigations have shown that natural attenuation and biodegradation of chlorinated volatile organic compounds CVOCs are substantial in shallow ground water beneath the 9-acre former landfill at Operable Unit 1 OU 1, Naval Undersea Warfare Center NUWC, Division Keyport, Washington. This report presents the ground-water geochemical and selected CVOC data collected at OU 1 by the U.S. Geological Survey USGS during June 17-20, 2003 in support of long-term monitoring for natural attenuation. Strongly reducing conditions favorable for reductive dechlorination of CVOCs were found in fewer upper-aquifer wells during June 2003 than were found during sampling periods in 2001 and 2002. Redox conditions in water from the intermediate aquifer just downgradient from the landfill remained somewhat favorable for reductive dechlorination. As was noted in previous monitoring reports, the changes in redox conditions observed at individual wells have not been consistent or substantial throughout either the upper or the intermediate aquifers.

Subject Categories:

  • Water Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE