Cal. Code Regs. tit. 23 § 3959.3
Water Board Resolution No. R6T-2008-0019, adopted on May 14, 2008 by the Lahontan Regional Water Quality Control Board, modified the regulatory provisions of the Water Quality Control Plan for the Lahontan Region by establishing a Total Maximum Daily Load (TMDL) for suspended sediment in the middle Truckee River, including Gray and Bronco creeks. The middle Truckee River is defined as the segment of the Truckee River from the outflow of Lake Tahoe to the California-Nevada state line. On March 17, 2009, the State Water Resources Control Board approved the amendment under Resolution No. 2009-0028.
The TMDL is a sediment control plan which sets a numeric target for suspended sediment concentrations in the river, and includes requirements for land managers to implement effective erosion controls to reduce sediment delivery to the middle Truckee River by 20 percent. These requirements will be included in Waste Discharge Requirements and Waivers as appropriate. Continued monitoring will also be required to evaluate the effectiveness of the TMDL. TMDL implementation is expected to result in improving conditions such that the middle Truckee River will meet its water quality standards for sediment within twenty years.
Cal. Code Regs. Tit. 23, § 3959.3