Background
Many of the issues addressed by ORSANCO involve differences among the states. Those differences may be the result of agency procedure, adopted policies, or established regulations. The perception is that, when different rules apply on different sides of the same river, the result will be an inequity between the states involved.

Examples of inconsistencies among the Commission’s member states include:
- Differences in in-stream criteria
- Differences in design stream flow for application of water quality standards
- Differences in mixing zone policies
- Differences in assumptions regarding cancer risk level protection
- Differences in terminology used in NPDES permits
- Differences in content of fish consumption advisories

The application of these differences to shared water such as the Ohio River causes confusion to the regulated community and to the public at large.

Read the whole document in Pdf:
Protocol for Addressing Interstate Inconsistencies