Hi Tim;

The question marks mean that polution insurance is not required by the EPA and is not a normal coverage for liability insurance so if you worry about these things you should consider getting pollution coverage. A classmate insisted that we all needed workman's comp, but I am not sure that is true.

Demolition of an unattached building does not require you to follow the lead-safe practices. I am uncertain about demolishing attached buildings. Tearing an attached building down without leavin any lead dust residue (less than 40 micrograms per sq. cm or whatever the units are) would be very tricky. I am worried this will encourage distruction of historic buildings.

The trouble with lead is that it is an element and never breaks down or goes away. I think it may "bioaccumulate".

I forgot to mention that lead-paint is a misnomer, some of the highest readings of lead content have been found in varnish and other clear, non-paint finishes. They are not worried about lead flashing because it does not turn to dust.

Also the use of an open flame (torch) and heat gun over 1,100 degrees f. are completely outlawed. These temperatures vaporize lead which is much worse than lead dust. Never use these tools on lead.

There are discussions about this subject at http://historichomeworks.com/forum/viewtopic.php?t=1413&postdays=0&postorder=asc&start=0

and http://www.facebook.com/topic.php?uid=176232613277&topic=11222

This rule will affect everyone.

Jim


The closer you look the more you see.
"Heavy timber framing is not a lost art" Fred Hodgson, 1909