Main Title |
Vertical Profiles of Toxicity, Organic Carbon, and Chemical Contaminants in Sediment Cores from the Palos Verdes Shelf and Santa Monica Bay, California. |
Author |
Swartz, R. C. ;
Schults, D. W. ;
Lamberson, J. O. ;
Ozretich, R. J. ;
Stull, J. K. ;
|
CORP Author |
Environmental Research Lab.-Narragansett, Newport, OR. ;Los Angeles County Sanitation Districts, Whittier, CA. |
Publisher |
c1991 |
Year Published |
1991 |
Report Number |
EPA/600/J-93/083 ;ERLN-N139; |
Stock Number |
PB93-173706 |
Additional Subjects |
Water pollution effects ;
Sediments ;
Toxicity ;
Sewage disposal ;
Palos Verdes Shelf ;
Santa Monica Bay ;
Outfall sewers ;
Sediment-water interfaces ;
Amphipoda ;
Chemical compounds ;
Vertical distribution ;
Reprints ;
Rhepoxynius abronius ;
Total organic carbon
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB93-173706 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
13p |
Abstract |
The toxicity of sediment to the amphipod Rhepoxynius abronius was determined in the laboratory for 5 cm vertical sections of sediment cores collected at two sites on the Palos Verdes Shelf near the Los Angeles County Sanitation Districts' municipal wastewater outfalls and at two reference sites in Santa Monica Bay, California. The vertical distribution of sediment toxicity near the outfalls was significantly correlated with profiles of total organic carbon and sediment chemical contamination (total oil/grease, p,p'-DDE, PCBs (Aroclor 1242), di(2-ethylhexyl)phthalate, Cd, Cr, Pb). Dating of core horizons showed that sediment toxicity also was significantly correlated with the historic record of the mass emission rate of suspended solids from the outfalls. The vertical profile showed that toxicity of surficial sediments, increased after the initiation of the discharge in the 1950s, remained relatively high until the early 1970s, and then decreased after the implementation of source control and improved effluent treatment. (Copyright (c) 1991 Elsevier Science Publishers Ltd, England.) |
Supplementary Notes |
Pub. in Marine Environmental Research, v31 p215-225 1991. Prepared in cooperation with Los Angeles County Sanitation Districts, Whittier, CA. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Vertical Profiles of Toxicity, Organic Carbon, and Chemical Contaminants in Sediment Cores from the Palos Verdes Shelf and Santa Monica Bay, California. |
Category Codes |
68D; 47D; 57Y |
NTIS Prices |
PC A03/MF A01 |
Primary Description |
600/05 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
314125835 |
Origin |
NTIS |
Type |
CAT |