Re: Mold Challange 2 - Leigh

[Guest guest]

Leigh,

> Carl--Are you aware that some Hepa type filters are inside of a

> cardboard frame which is then placed inside of the system???

If the filter is in a cardboard frame then it cannot be a HEPA

filter, which by definition captures 99.97% of 0.3 micron particles.

The air resistance is so great through the very tiny holes of a HEPA

that cardboard would not be strong enough to hold it.

> I know

> that Trane manufactures one inside of a cardboard frame.

Can you give me a part number? I'm sure they have one in a cardboard

frame but would guess it is either 1 " or 2 " thick. That would meet

the specifications of a HEPA filter.

///Could the

> Stachy have been in an old system which was removed but some Stachy

> remained in the air ducts after its' removal?

That would be one explanation but the filter was a 3M Filtrete. Also,

the Stachybotrys would grow on long term dampness. The air movement

across it would dry out the Stachybotrys preventing growth. The A/C

coil and drip pan are an entirely different environment.

> I find the patching of the insulation a little unusual

> for some reason or another.

So did I. That's why I asked about pets, the usual cause for this

pattern of patching.

> Perhaps water could have gotten in to the

> basement and the evidence was covered up?

That is certainly something to be considered, just like the

possibility of a false positive on the samples.

You and the others are beginning to see the picture on what is

involved in assessing any kind of indoor environmental complaint

whether or not it is mold.

Carl Grimes

Healthy Habitats LLC