Record Display for the EPA National Library Catalog

RECORD NUMBER: 467 OF 549

Main Title TMDLs for Lead and Siltation/Turbidity for Big Creek near Sheridan, Arkansas (HUC-reach 08040203-904).
CORP Author Tetra Tech, Inc., Fairfax, VA.; Environmental Protection Agency, Dallas, TX. Region VI.
Year Published 2008
Report Number EPA/68-C-02-108
Stock Number PB2013-100759
Additional Subjects Water quality ; Water pollution ; Dissolved oxygen ; Arkansas ; Clean water act ; Lead(Metal) ; Nonpoint sources ; Point sources ; Silts ; Turbidity ; State regulations ; USEPA ; Wasteload allocations ; Total maximum daily load(TMDL) ; Sheridan(Arkansas)
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB2013-100759 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 61p
Abstract
Section 303(d) of the Clean Water Act and the U.S. Environmental Protection Agency's (EPA) Water Quality Planning and Management Regulations (at Title 40 of the Code of Federal Regulations (CFR) Part 130) require states to develop Total Maximum Daily Loads (TMDLs) for impaired waterbodies. A TMDL establishes the amount of a pollutant that a waterbody can assimilate without exceeding its water quality standard for that pollutant. TMDLs provide the scientific basis for a state to establish water quality-based controls to reduce pollution from both point and nonpoint sources to restore and maintain the quality of the state's water resources (USEPA 1991). A TMDL for a given pollutant and waterbody is composed of the sum of individual wasteload allocations (WLAs) for point sources and load allocations (LAs) for nonpoint sources and natural background levels. In addition, the TMDL must include an implicit or explicit margin of safety (MOS) to account for the lack of knowledge concerning the relationship between pollutant loads and the water quality of the receiving waterbody.