National Association of County & City Health Officials (NACCHO) Local Health Department (LHD) Directory by zip code.
Nature of Evidence
E-book by the National Academies Press titled Environment Health Sciences Decision-Making: Risk Management, Evidence, and Ethics: A Workshop Summary (2009) provides a good summary on the strategies used to make decisions, including defining the 'nature of evidence' and measures of evidence credibility. The table of contents and chapters are accessible by links to the right of the text.
Analytic-Deliberative Process
E-book by the National Academies Press titled Understanding Risk: Informing Decisions in a Democratic Society provides a good summary (pages 6-8) on the structuring of an effective analytic-deliberative process for informing a risk decision.