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EPA continues to assist the Basin states as they implement EPA-approved nonpoint source management programs under Clean Water Act section 319. As of this reporting period, there appears to be C) a relatively minor amount of funding for Colorado River salinity 0' control. However, EPA Region IX has provided Section 319 funds to en Las Vegas Wash project in Nevada. The project will assess the 00 sources of salt (and other parameters) and develop a plan to control the sources. EPA supports the need for salinity control on rangelands and the interagency effort in utah to determine the rangeland watershed priorities for treatment. EPA is participating with the Forum and the involved agencies to help expand this process to other states. STATE SALINITY CONTROL ACTIVITIES Important components of the plan of implementation for salinity control are the Basin states' activities associated with the control of total dissolved solids through the Pollutant Discharge Elimination System (NPDES) Permit program, Nonpoint Source (NPS) Management Plans under section 319, and the water quality management plans. The delegation authority for the permit program and a summary of water quality management planning are presented in the 1990 Review. Only those actions that have taken place since the 1990 Review will be identified. The State of California re-adopted the "1990 Review-Water Quality Standards for Salinity- Colorado River System." California has submitted its review to EPA for approval. Arizona had adopted the numeric criteria in 1976 and the criteria and locations as set forth in 1987 Review have not changed. Arizona will adopt the reference to implement the 1990 Review. A complete listing of the NPDES permits issued within the Colorado River Basin are presented in Appendix C of the 1990 Review. Those permits on which action took place since the 1990 Review are discussed in the following paragraphs, together with the actions taken by the states since the 1990 Review. Certain Basin states have completed and others are in the process of completing and implementing Nonpoint Source Control Implementation Programs Arizona In drafting NPDES permits for industries throughout the Colorado River Basin within the state above Imperial Dam, Arizona follows the Forum's policy regarding salinity control. Reuse of treated wastewater is encouraged as a general principle. The State's Nonpoint Source Water Quality Assessment and Management Plan reports have been approved by EPA. The Management Plan provides for federal consistency in applying the provisions of the NPS Managment Program. These activities include modification of irrigation systems, salinity control projects, impoundments, and diversion. 15