I just got it on this link:
Click on FEMA 273.
> From: Bill Polhemus <polhemus(--nospam--at)insync.net>
> To: seaint(--nospam--at)seaint.org
> Subject: FEMA 273 PDF Format Document(s)
> Date: Tuesday, April 27, 1999 12:42 PM
> Someone from the list notified me that I might found some information of
> particular interest to me in the FEMA 273 document.
> Although I was given a web page where supposedly the individual chapters
> that document were available in PDF format, I was unable to access it due
> its (apparent) removal from the server.
> By chance has anyone here got those PDF documents? If so, would anyone
> willing to email Chapters 6 and 7 to me?
> Thank you!