so, similar to what we have been doing with your community of the builder's association and mr. oneal presenting a proposal which we will call the corridor air proposal. so we will have a term about that, and that is a way to see if it is acceptable in fire safety terms to use the filtered corridor air as the fresh air supply for the residential units so we are definitely trying to give a fair hearing to that idea and seeing whether or not it is going to be acceptable to our fire marshal. so then our job in the health department is to lead the charge for the 120-day mandate as well. which is to have a report, of technologies, that help people comply with this law. and so, the corridor air proposal will be one of those if we can determine whether it is going to be accepted across the board, accepted on a case by case basis or not accepted at all. we will include that in the report, and we are looking at the technologis that they have use and what the history has been with compliance and so we can use their experience and we are considering whether or not to let out a small contract and

we all know that the code is a little lagging behind most in the case behind the technology and mr. oneal correctly pointed out that today's technology, the response time of the smoke damper is much better than it used to be when the code was made. and so, conceptually, we think that it is a sound concept, design. but, on the other hand as the code enforcer we are also concerning that in the event of the fire smoke damper failure the smoke could potentially get into the egress channel. and that is the corridor and so, the very much would like to work with the fire department and continue to take a closer look on the issue and make sure that it will not infringe the life and safety of the occupants. >> and also, in the mechanical code, there is a requirement mandating once the supplier's flow rate over 5,000, it must be built in a auto shut off system and now, we are talking about incorporating the filter supply here and being supplied to individual units through the corridor. and the, the flow rate of the outside air is of course, many times larger than this only supplying the corridor if

mr. oneal's document i would have i believe two air changes per hour within the corridor and then a requirement to have air flow from the corridor into the dwelling units based on the factors related to the units and the number of occupants. >> that ability to push in the air to the dwellings requires the corridor be pressurized. >> yes, okay. >> the corridor could also be influenced by wind and what is called stack effect in the building which is an effect which arises during times when the building is hot relative to outside or cold relative to outside. >> okay. >> so the corridor could see the changes in pressure, yes. >> and there is something that regulates that within the system? >> yeah, and sort of out of my area, there are what are called compensated fans, which would allow for regulation of pressure in a space. whether those fans would be implemented in a given scenario i am not sure. >> i believe that we might have more questions for you dr. rich, but we really appreciate you explaining that in the layman's terms and we got a good understanding and i appreciate the kind of excuse on