||Water Quality Analysis of Zinc in Northeast River, Cecil County, Maryland.
||Maryland Dept. of the Environment, Baltimore.; Environmental Protection Agency, Philadelphia, PA. Region III.
Water quality ;
Sample stations ;
Metal detection ;
Biological assessments ;
Aquatic life ;
Total Maximum Daily Loads(TMDLs) ;
Northeast River(Maryland) ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||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. This list of impaired waters is commonly referred to as the 303(d) list. For each WQLS, the State is to either establish a Total Maximum Daily Load (TMDL) for the specified substance that the waterbody can receive without violating water quality standards, or demonstrate that water quality standards are being met. Northeast River (basin code 02-13-06-08), located in Cecil County, was identified on the States list of WQLSs as impaired by nutrients (1996 listing), suspended sediments (1996 listing), zinc (Zn), (1996 listing), lead (Pb) (1996 listing), and impacts to biological communities (2002 listing). All impairments were listed for the tidal waters except for impacts to biological communities, which are listed for the non-tidal region. Code of Maryland Regulations (COMAR) 26.08.02.03-1-B(3)(g) defines the Elk River area, which includes the Northeast River, as a fresh waterbody. This report provides an analysis of recent monitoring data, including hardness data, which shows that the aquatic life criteria and designated uses associated with Zn are being met in the Northeast River. The information (P. Jiapizian, personal communication 2001) used for listing Zn is suspect due in part to sampling and analysis methods available at the time, and assessment inconsistencies that led to the listing in 1996.
||Sponsored by Environmental Protection Agency, Philadelphia, PA. Region III.
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|PUB Date Free Form
||7 Dec 2005
||68D; 43F; 48G; 57Y