Upper Oyster Creek DO Public Comment Meeting - Presentation April 22, 2008

Upper Oyster CreekDissolved Oxygen TMDLA Brief OverviewJason LeifesterTCEQ TMDL ProgramApril 22, 2008Texas TMDL Program• Texas is required under the federal Clean Water Act to list impaired waters and to take action to restore them.• A surface water body is considered impaired if it does not meet any of its criteria for support, as defined in the Texas Surface Water Quality Standards.• Impaired waters are identified every two years in the Texas Water Quality Inventory and 303(d) List.•A 3-part process is used for restoration:1) establish a total maximum daily load (TMDL)2) develop an implementation plan3) implement the planTexas TMDL Program•TMDL –Total Maximum Daily Load Determines the maximum amount (load) of a pollutant that a water body can receive and still maintain its uses, and allocates this load to point and nonpoint sources in the watershed.• A TMDL is also a document submitted to the EPA. It identifies the pollutant of concern and its sources, and allocates the allowable load.Impaired SegmentStream SegmentHARRISProject WatershedKKatyHoustonMissionBendFulshearUpperTown West Oyster Creek1245Sugar LandStaffordPecanGroveMissouriBrazos RiverCityFirstRichmondColonyRosenbergFORT BENDThompsons0246MilesAquatic Life UseSpecific Criteria for Upper Oyster Creek• Aquatic life use: Intermediate• Sunfish, crappie, bass, catfish, etc.• Dissolved oxygen criteria (mg/L)-Mean/minimum 4.0/3.0- ...