NYC 9/11 Public Portal Document
Site Hazards 9/21/20D1
OR»139i-WY New York City
tors to see if the fuel was feeding the
'■fe fires. (Often it was). Rescue teams
would then decide where to work that
Egil day, based on the patterns.
>. One tool often used in conjunction
with G.I.S. is a Global Positioning
System device, which can determine
a location by using satellite transmis
sions. G.P.S. units do not work well at
the disaster site, however, because
Hatiqmqfcieams the surrounding tall buildings inter
fere with the satellite signals. Rescue
workers must instead count out steps
and plot their positions on their own
9k * within the grids on the maps.
But even without the precision of
G.P.S. units, people involved in the
rescue effort agree that the Geo
graphic Information System is a cru
Ji cial tool. “I can’t stress how impor
0 125 Z5£ so:
—, '"
75:
:—-I Fee-
tant it is, and it’s so easy to put
Federal Emergency Management Agenc' together and do,” said James Lee
An aerial photograph of the World Trade Center site with overlaid loca Witt, the director of FEMA. “It’s
tions of hazards like fires, overhead cranes and hanging debris. amazing that you can take a building
like the World' Trade Center and put
that information into the G.I.S. and be
Mapping the Hazards able to put a plan in place.”
The ability to maintain a well-or
ganized, readily available archive is
another advantage, one that will come
uer in handy this week as some members
of the Urhan Cparrh and Rescue Re-
sponse System finish their work in
At one point Mr. Sekins used a New York and turn over the G.I.S.
By CATHERINE GREENMAN World Trade Center shopping guide to archives to the Fire Department.
draw a map of unstable buildings anc “We’re leaving a very solid record of
w HEN Glenn Sekins arrived
on Sept. 12 at the Jacob K.
Javits Convention Center, a
staging area for rescue operations
after the attacks on the World Trade
other dangerous structures. He made
copies at a Kinko’s copy center and
handed them out to the rescue teams.
When computers and G.I.S. opera
tors arrived, Mr. Sekins said, “We
events, so we’re sure the transition
will be smooth,” Mr. Sekins said.
Center, he took a black felt-tip mark could finally let the computer do
er and drew a crude map of the something that it would take a skilled
streets and buildings at the disaster worker hours and hours to do.’'
site on a piece of cardboard left ovei
from a trade show.
As situation unit leader for the Na
Using four G.I.S. workstations and
two color plotters at the Javits center,
Mr. Sekins and his team have been
hi
tional Urban Search and Rescue Re
sponse System, a task force estab
lished by the Federal Emergency
able to create maps ranging from
simple guides showing the locations
of command posts, first-aid centers
and food stations to others depicting
fuf'c/1 (J J
Management Agency, Mr. Sekins
faced the long task of providing hazards like lingering fires and de
rescue workers with detailed data bris hanging from buildings.
about potential hazards at the site anc Debris on the ground is also care
helping task force leaders coordinate fully tracked. “They’re playing a gi
the relief effort. ant game of pick-up sticks, so we have
As he had in other catastrophes. to plan out what thing gets moveo
Mr. Sekins, who is based in Yorba next to avoid a secondary collapse,’’
Linda, Calif., would rely on Geograph Mr. Sekins said.
ic Information System software, One of the most heavily used maps
which can assemble and manipulate relies on a daily aerial shot of the site
data that is identified by location and taken with a heat-sensing camera to
display it, usually on a map. detect fire patterns in the rubble. As
But in the first four days after the hot spots are identified, the G.I.S.
attack, neither the G.I.S. equipment.
including computers and color plot team overlays the image with a map
ters for printing out maps, nor the showing the location of underground
technicians needed to operate them tanks that held diesel fuel for genera-
were available because the planes to
transport them were not flying. A guide, regularly
updated, to the
dangers in the rubble.
NYC-WTC_000152477
OCR can misread numbers and units. Confirm readings against the page image before using them.