First off the State of Florida (and a few other States) are a self insured municipality. As such the State Legislators must pass timely manner (yea...OK) amendments to update to the current codes. In Florida we are working from the 2008 National Electrical Code (NEC). With that being said lets talk about the Concrete Encased Electrode (CEE). In the 2008 NEC Article 250.52(A)3 identifies the requirement for a CEE. In the current edition of the 2011 NEC article 250.52.(A)3 has a revision included which is entitled "Informational Note". This informational not states " Concrete installed with insulation, vapor barrier, films or similar items separating the concrete from the earth is not considered to be in direct contact with the earth". Another resource would be the green book, IEE Standard for grounding. If you look at IEE section 4.2.3. it will describe the CEE in depth. SO here we have a conflict in that as the Legislators drag their feet to amend the State building codes we must settle for second best. Yet, the Electrical Contractors are installing Arc fault circuit breakers and tamper proof devices, which I do not think they were required in the 2008 codes, go figure? Anyway, a true CEE need to be less that 25 ohms to be effective. In the 2011 NEC with the revision to NEC article 250.52.(A)3 they are looking for greater surface area to be in direct contact with the earth. As it stands now nobody can tell me that with the vapor barrier installed what the resistance to earth is. According to the NEC it must be less that 25 ohms. To test the CEE you need a Ground Resistance Tester and a megger or ohm meter will not work. I am having a home built and I know for sure that the vapor barrier is under the footer. The County and local inspector said that is Ok for they are enforcing the 2008 National Electrical Code......, but the electrical contractor is installing the electrical system with the 2011 NEC....Conflict? .........CAN DO..........