All news related to Sediment Quality

Advisory committee to review workplan for study revisiting copper TMDL in Marina del Rey Harbor

  A technical advisory committee in December is scheduled to review the draft workplan for a study examining whether existing regulatory targets for dissolved copper in Marina del Rey Harbor ... More

Field sampling completed for study probing origins of sediment contaminants that bioaccumulate in fish

SCCWRP and its partners in October completed the second and final round of field sampling for a study investigating whether legacy contaminants found in the tissue of San Diego Bay ... More

Bight ’18 field sampling underway to assess sediment quality

The sampling window for the Southern California Bight 2018 Regional Monitoring Program opened July 1, with participants starting to collect seafloor sediments to evaluate the chemical, toxicological and biological health ... More

Round 1 field sampling completed for study probing origins of sediment contaminants that bioaccumulate in fish

SCCWRP and its partners have completed the first round of field sampling for a two-year study investigating whether legacy contaminants found in the tissue of San Diego Bay fish are ... More

Framework approved to assess sediment’s impacts on humans

The State Water Board has approved a standardized sediment assessment framework intended to better protect the health of humans who consume seafood caught in California’s enclosed bays and estuaries, the ... More

Bight ’18 keeps focus on key issues of management concern

More than 80 environmental agencies will examine new and emerging developments in water-quality science and management during the 2018 cycle of the Southern California Bight Regional Monitoring Program, which initiates ... More

New study probes origins of legacy sediment contaminants that bioaccumulate in fish

SCCWRP and its partners have launched a two-year study to investigate whether legacy contaminants that occur in the tissue of fish in San Diego Bay are coming exclusively from contaminated ... More

Study offers guidance for optimizing TIE study design

SCCWRP and its partners have completed a two-year study examining how to optimize the design of toxicity identification evaluation (TIE) studies to improve confidence in the results. The project, published ... More

Study launched to revisit copper TMDL for Marina del Rey Harbor

SCCWRP has launched a two-year study examining whether existing regulatory targets for dissolved copper in Marina del Rey Harbor should be modified to more accurately reflect the ecological threat posed ... More

Laboratory-based passive-sampling method used to measure sediment contamination

SCCWRP and its partners have successfully used prototype passive-sampling methods in a laboratory to measure the freely dissolved concentrations of organic contaminants in sediment. Unlike previous applications of passive-sampling technology ... More

Draft framework unveiled for assessing human health impacts of contaminated sediment

SCCWRP and its partners have completed development of a standardized sediment assessment framework intended to better protect the health of humans who consume seafood caught in enclosed bays and estuaries ... More

First phase of sediment TIE optimization study wraps up

SCCWRP has completed the first phase of a two-year project exploring how to optimize the design of toxicity identification evaluation (TIE) studies to improve confidence in the results. The project, ... More

Passive sampling method for measuring sediment contaminants validated in laboratory

SCCWRP and its partners have completed the validation phase of a two-year study that aims to adapt commercially available passive sampling devices to measure the freely dissolved concentration of CECs ... More

Human health assessment framework for embayment sediment quality being finalized

SCCWRP and its partners are wrapping up a final round of updates to a draft statewide assessment framework that evaluates how contaminated sediment affects the health of humans who consume ... More

Marina del Rey Harbor study highlights need for improved tools to investigate cause of sediment toxicity

SCCWRP and its partners have completed a comprehensive investigation into the potential causes of degraded sediment quality in Marina del Rey Harbor, a study that has underscored the need for ... More

San Diego Bay study examines fish consumption habits among local anglers

SCCWRP and its partners have completed a comprehensive, two-year study illuminating the fish consumption habits of San Diego Bay anglers who catch fish that could potentially be contaminated. The San ... More

Marina del Rey Harbor study highlights need for improved tools to investigate cause of sediment toxicity

SCCWRP and its partners have completed a comprehensive investigation into the potential causes of degraded sediment quality in Marina del Rey Harbor, a study that has underscored the need for ... More

San Diego Bay study examines fish consumption habits among local anglers

SCCWRP and its partners have completed a comprehensive, two-year study illuminating the fish consumption habits of San Diego Bay anglers who catch fish that could potentially be contaminated. The San ... More

Human health assessment framework for embayment sediment quality being finalized

SCCWRP and its partners are wrapping up a final round of updates to a draft statewide assessment framework that evaluates how contaminated sediment affects the health of humans who consume ... More

Bight ’13 CIA element publishes integrated summary reports

The integrated findings of the Contaminant Impact Assessment (CIA) element of Bight ’13 have been published in a final assessment report and an accompanying, 12-page executive summary intended for a ... More

Sediment samples being analyzed to test CEC monitoring framework

SCCWRP and the Sanitation Districts of Los Angeles County have begun analyzing sediment samples collected from across two regions of California for a pilot study that will test-drive a new, ... More

Promising passive sampling device developed to detect fipronil in receiving waters

SCCWRP and its partners have identified a promising, cost-effective passive sampling method for detecting the ubiquitous pesticide fipronil in receiving waters. The passive sampling method for this problematic, high-priority CEC ... More

Marina del Rey stressor identification rules out possible causes of degraded sediment quality

SCCWRP and its partners have ruled out some potential causes of degraded sediment quality in Marina del Rey Harbor, part of an ongoing stressor identification study aimed at understanding why ... More

Bioaccumulation study informs health risks from sediment

SCCWRP and its partners have completed a comprehensive investigation into how sediment contamination is transferred through Southern California marine food webs, a study that has enabled scientists to close key ... More

Sediment toxicity database expanded to improve availability of high-quality data

SCCWRP, in association with the Society of Environmental Toxicology and Chemistry (SETAC), has completed a major expansion of a publicly accessible database designed to improve environmental managers’ access to high-quality ... More

Marina del Rey stressor identification rules out possible causes of degraded sediment quality

SCCWRP and its partners have ruled out some potential causes of degraded sediment quality in Marina del Rey Harbor, part of an ongoing stressor identification study aimed at understanding why ... More

SCCWRP completes data collection for fish consumption study

SCCWRP has completed a year-long effort to interview more than 1,600 San Diego Bay anglers about their fish consumption habits for a study that will ascertain whether local anglers and ... More

San Diego Bay bioaccumulation study nearing completion

A three-year study that quantifies how sediment contamination in San Diego Bay is transferred through various levels of the marine food web has completed its first phase of data analysis ... More

SCCWRP-developed sediment bioaccumulation model being tested in L.A./Long Beach Harbors

SCCWRP and the Harbor Technical Work Group, which is working to address a TMDL (total maximum daily load) in Los Angeles and Long Beach Harbors, launched an effort in November ... More

San Diego Bay bioaccumulation study working to quantify DDTs, PCBs

SCCWRP and its partners in December began analyzing and interpreting data collected from more than 300 San Diego Bay sediment and animal-tissue samples as part of a two-year study that ... More

Draft study plan released for planned Marina del Rey copper bioavailability study

SCCWRP in January released a draft study plan for an upcoming Marina del Rey Harbor study that will seek to measure the influence of harbor water characteristics and environmental variations ... More

Sediment stressor identification study launched in Marina del Rey

SCCWRP in late January kicked off a study that seeks to determine the cause of sediment toxicity and benthic community impairment in Marina del Rey Harbor. The study involves using ... More

Massive 3-year sampling effort for San Diego Bay bioaccumulation study wraps up

Scientists have finished collecting and analyzing more than 260 animal samples from San Diego Bay in one of the most comprehensive Southern California investigations ever conducted into how contamination is transferred ... More

Bight ’13 toxicity data suggest sediment quality is improving

Sediment toxicity testing conducted as part of the 2013 Southern California Bight Regional Monitoring Program has revealed evidence of continuing improvement to sediment quality, according to the findings of the ... More