Data for selected pesticides and volatile organic compounds for wells in the western San Joaquin Valley, California, February to July 1985

Book · Thu Jan 01 04:00:00 EST 1987

OSTI ID:5803311

Neil, J M

During February to July 1985, water samples were collected from 55 wells in the western San Joaquin Valley, California, for chemical analysis to determine if 20 selected pesticides and 26 volatile organic compounds were present. Twenty-six of the sampled wells are completed in the shallow unconfined regional aquifer and 29 wells are completed in the deep confined regional aquifer. Water from six of the sampled wells, four of which are completed in the shallow unconfined aquifer, contained detectable levels of the pesticides or volatile organic compounds. Four samples contained a single pesticide, one sample contained two pesticides, and one sample contained 5.9 microgm/liter of toluene, a volatile organic compound. five of the six pesticides detected were triazine herbicides; the maximum concentration was 0.2 microgm/liter. Four samples with detectable concentrations of triazine herbicides are from wells used for domestic water supply; however, drinking-water standards have not been established for triazine herbicides. 4 refs., 1 fig., 3 tabs.

• OSTI ID: 5803311
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
AQUIFERS
CALIFORNIA
CHEMICAL ANALYSIS
CONTAMINATION
ECOLOGICAL CONCENTRATION
FEDERAL REGION IX
MATTER
MONITORING
NORTH AMERICA
ORGANIC COMPOUNDS
PESTICIDES
POLLUTION
USA
VOLATILE MATTER
WATER POLLUTION
WATER WELLS
WELLS