That is a non answer. The question was if 38 million gallons was sufficient for the first 3 days.
You are wrong about it being 38 million gallons in the first 3 days and you are wrong about it being insufficient to reach the 12th floor. You are NOT an expert on this subject.
"After the WTC buildings collapsed, fire fighting and rescue operations continued. The fires at ground zero were smoldering for months after the attack (41). It was determined that
3 million gallons of water were hosed on site in the fire-fighting efforts between 9/11 and 9/21
In addition, there were two episodes of rain during the same 10-day period: on 9/14 and 9/20,21 (18), totaling 0.9 million gallons of water in the Bathtub area. Considering the neighboring areas, we take 1 million gallons from the rain. Therefore,
a total of 4 million gallons of water percolated through the debris in the first 10 days and collected at the bottom of the Bathtub."
https://e-reports-ext.llnl.gov/pdf/241096.pdf
That is another non answer. How did they get millions of gallons
to the sight if the water just trickled out of the supply line as you said it would do?
I did some research and I now know the answer but you still don't. The way they managed to get millions of gallons of water to the sight from the Harvey would necessarily deliver it at a pressure sufficient to reach the 12th floor and above as in this video of water being applied to the roof of 90 West St. from the building next door demonstrates.
at 3:37
http://www.youtube.com/watch?v=Ufz71bjwqvY