Record Display for the EPA National Library Catalog

RECORD NUMBER: 18 OF 21

OLS Field Name OLS Field Data
Main Title Water Quality Analysis of Eutrophication for the Seneca Creek Basin in Montgomery County, Maryland.
CORP Author Maryland Dept. of the Environment, Baltimore.; Environmental Protection Agency, Philadelphia, PA. Region III.
Year Published 2009
Stock Number PB2013-107244
Additional Subjects Water quality ; Eutrophication ; Maryland ; Ecology ; Watersheds ; Nutrients ; Sediments ; Phosphorus ; Pollutants ; Dissolved oxygen ; Water Quality Limited Segments(WQLSs) ; Seneca Creek Basin(Maryland) ; Montgomery County(Maryland)
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB2013-107244 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 11/19/2013
Collation 28p
Abstract
Section 303(d) of the federal Clean Water Act (CWA) and the U.S. Environmental Protection Agencys (EPA) implementing regulations direct each state to identify and list waters, known as water quality limited segments (WQLSs), in which current required controls of a specified substance are inadequate to achieve water quality standards. For each WQLS listed on the Integrated Report of Surface Water Quality in Maryland (Integrated Report), the State is required to either establish a Total Maximum Daily Load (TMDL) of the specified substance that the waterbody can receive without violating water quality standards, or demonstrate via a Water Quality Analysis (WQA) that water quality standards are being met (CFR 2007). The waters of Seneca Creek (MD basin code 02140208), located in Montgomery County, have been identified on the Integrated Report under Category 5 as impaired by nutrients (1996), sediments (1996), and impacts to biological communities (2002). All impairments are listed for non-tidal streams. The 1996 suspended sediment listing was refined in the 2008 Integrated Report to a listing for total suspended solids. Similarly, the 1996 nutrients listing were refined in the 2008 Integrated Report and phosphorus was identified as the specific impairing substance. Consequently, for the purpose of this report the terms nutrients and phosphorus will be used interchangeably. The listings for sediments and impacts to biological communities will be addressed separately at a future date.