Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Science Supporting Dissolved Oxygen Objectives in California Estuaries.
Author M. Sutula ; H. Bailey ; S. Poucher
CORP Author Southern California Coastal Water Research Project, El Segundo.; California State Water Resources Control Board, Sacramento.; Environmental Protection Agency, San Francisco, CA. Region IX.; California Environmental Protection Agency, Sacramento.
Year Published 2012
Report Number EPA/ERA/TR-684
Stock Number PB2013-109527
Additional Subjects Estuaries ; Water quality control ; Surface water ; Toxic pollutants ; Water quality ; California ; Natural resource ; Bays ; Water quality management ; Standards ; State Water Resources Control Board(SWRCB) ; Total Maximum Daily Loads(TMDLs)
Library Call Number Additional Info Location Last
NTIS  PB2013-109527 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/17/2014
Collation 96p
California State Water Resources Control Board (SWRCB) is developing nutrient water quality objectives for the States surface waters, using an approach known as the Nutrient Numeric Endpoint (NNE) framework. The NNE framework establishes a suite of numeric endpoints based on the ecological response of an aquatic waterbody to nutrient over-enrichment (eutrophication; e.g., dissolved oxygen, algal biomass). The SWRCB intends to use dissolved oxygen (DO) as an indicator in the NNE framework for estuaries. All seven coastal Regional Water Quality Control Boards (RWQCB) have existing basin plan objectives for DO concentrations intended to maintain satisfactory water quality in enclosed bays and estuaries. However, these objectives are not consistent across the individual RWQCBs and reflect outdated science. Thus, recent advances in scientific understanding of DO tolerance in estuarine and marine organisms, as well as new methods for setting protective limits, may provide the technical basis for improved and more consistent objectives to protect beneficial uses. The primary objective of this document is to evaluate the current scientific basis supporting derivation of DO objectives for estuaries and enclosed bays in California. Ideally, such objectives would be applicable to the approximately 400 estuaries found in California and address regional (i.e., north-south) differences among organisms present.