| Abstract: | 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. (USGS) |
| Genre: | USGS Numbered Series |
| ProdID: | 15181 |
| Citation Author: | Neil, J. M. |
| 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, 10 p. :ill., maps ;28 cm. |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | U.S. Geological Survey, |
| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 87-48 |
| Citation Search Results Text: | Data for selected pesticides and volatile organic compounds for wells in the western San Joaquin Valley, California, February to July 1985; 1987; OFR; 87-48; Neil, J. M. |
| Citation Start Page: | |
| Citation Volume: | |
| Citation Year: | 1987 |
| Type: | citation/reference |
| Text: | Data for selected pesticides and volatile organic compounds for wells in the western San Joaquin Valley, California, February to July 1985; 1987; OFR; 87-48; Neil, J. M. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/of/1987/0048/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/of/1987/0048/report.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey, |
