||Water Quality Analysis of Zinc and Lead in Bodkin Creek, Anne Arundel County, Maryland.
||Maryland Dept. of the Environment, Baltimore.; Environmental Protection Agency, Philadelphia, PA. Region III.
Water quality ;
Water pollution ;
Sample stations ;
Aquatic life ;
Biological assessment ;
Total Maximum Daily Loads(TMDLs) ;
Bodkin Creek(Maryland) ;
Anne Arundel County(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. Bodkin Creek (basin code 02130902), located in Anne Arundel County, was identified on the States list of WQLSs as impaired by nutrients (1996 listing), suspended sediments (1996 listing), copper (Cu) (1996 listing), zinc (Zn) (1996 listing), lead (Pb) (1996 listing), and impacts to biological communities (2004 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)(j)(i) defines Bodkin Creek, as an estuarine 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 and Pb are being met in Bodkin Creek. In addition, the results of an ambient sediment bioassay conducted in Bodkin Creek, by the University of Maryland Wye Research Center, established that there is no toxicity in the sediment as a result of Zn and Pb or other toxics contamination. The information (P. Jiapizian, personal communication 2001) used for listing Zn and Pb is suspect due in part to sampling and analysis methods available at the time, and assessment inconsistencies that led to the listing in 1996.
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|PUB Date Free Form
||20 Feb 2009
||68D; 48G; 91A; 43F; 57Y