WSP11033

• File Number: 8272.100.70
• Description: Colorado River Basin Salinity Control Forum
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 6/1/1975
• Author: CRBSCF
• Title: Water Quality Standards for Salinity Including Numeric Criteria and Plan of Implementation for Salinity Control
• Water Supply Pro - Doc Type: Report/Study

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CHAPTER I
INTRODUCTION

The purpose of this report is to present water quality standards

for salinity for the Colorado River System, as required by the
Environmental Protection Agency regulation [40 CFR Part 120, Water
Quality Standards], published December 18, 1974. As used in the

report, the term "standards" is defined in accordance with Environmental

Protection Agency terminology to include both numeric criteria and the

plan of implementation for salinity control. The achievement of

numeric criteria requires the full implementation of the plan and

appropriate changes. The criteria are subject to revision upward or

downward as provided in this report. The report was prepared by the

Colorado River Salinity Control Forum, composed of water resource and

water quality representatives from the seven Colorado River Basin

of Arizona, California, Colorado, Nevada, New Mexico, Utah and Wyoming.

It provides the states with the necessary information to meet the

Environmental Protection Agency regulation, which requires the states

to adopt water quality standards for salinity and submit them to the
Agency for approval on or before October 18, 1975. While the complete

regulation is presented in Appendix A, the most pertinent portion is

incorporated in the text of Chapter IV, "water Quality Standards for

Salinity Control".

The report deals only with the portion of the Basin above Imperial

Dam. Water quality control measures downstream from Imperial Dam

are being carried out in accordance with the provisions of Minute 242

of the International Boundary and Water Commission, United States

and Mexico, and Title I of PL 93-320, the Colorado River Basin
Salinity Control Act.

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