OAC Chapter 3745-4
Credible Data Rules

The following is a complete list of the rules in Chapter 3745-4 of the Ohio Administrative Code. The documents are available in the Adobe Acrobat™, PDF format*.

More information about Ohio's credible data program is available here.

Download the entire Chapter 3745-4 here (PDF 367k), or download individual rules below.

• Table of Contents (PDF 50k)
• 3745-4-01 Purpose and applicability (PDF 11k)
• 3745-4-02 Definitions (PDF 14k)
• 3745-4-03 Qualified data collectors (PDF 36k)
• 3745-4-04 Level 1 data requirements and reporting (PDF 11k)
  • Appendix A Some examples of acceptable analytical methods for level 1 and level 2 credible data (PDF 29k)
• 3745-4-05 Level 2 data requirements and reporting (PDF 14k)
  • Appendix A Guidelines for the preparation of level 2 project study plans (PDF 53k)
  • Appendix B Guidelines for laboratory quality assurance plans (PDF 52k)
  • Appendix C Some examples of acceptable analytical methods for level 1 and level 2 credible data (PDF 29k)
• 3745-4-06 Level 3 data requirements and reporting (PDF 38k)
  • Appendix A Guidelines for the preparation of level 3 project study plans (PDF 58k)
  • Appendix B Guidelines for laboratory quality assurance plans (PDF 53k)

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