Oregon Administrative Rules
Chapter 340 - DEPARTMENT OF ENVIRONMENTAL QUALITY
Division 41 - WATER QUALITY STANDARDS: BENEFICIAL USES, POLICIES, AND CRITERIA FOR OREGON
Section 340-041-0344 - Approved TMDLs in the Basin
The following TMDLs have been approved by EPA, and appear on the Department's web site:
Columbia Slough -- Bacteria, Dissolved Oxygen, Chlorophyll a, pH, lead, PCBs, Dieldrin, Dioxin, DDE/DDT, and Phosphorus -- November 25, 1998
Pudding -- Ammonia and BOD -- October 18, 1993
Rickreall Creek -- BOD -- April 18, 1994
Tualatin -- Temperature, Bacteria, Dissolved Oxygen, Settleable Volatile Solids, Ammonia, Chlorophyll a, pH and Phosphorus -- August 7, 2001
Yamhill -- Phosphorus -- December 8, 1992
Willamette -- Dioxin -- February 25, 1991
Willamette Coast Fork -- Ammonia and Phosphorus -- May 17, 1996
Stat. Auth.: ORS 468.020, 468B.030, 468B.035 & 468B.048
Stats. Implemented: ORS 468B.030, 468B.035 & 468B.048