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If
You Choose to Stay. . .Stay Responsibly
Having decided to stay, whether you think
your place is not threatened or because you intend to participate
in the defense of your home, you need to think further about
the following. Remember, a wildfire is a violent, complex phenomenon.
It can change direction and speed in moments. The winds can blow
embers for a mile or more from the main fire-front, leaping considerable
distances and over obstacles. What may seem safe at one time
may be threatened minutes later.
A wildfire close-up is dangerous and stressful even on observers.
The heat, smoke and noise will saturate your senses and do some
harm almost no matter what you do. Firefighters typically find
that they have suffered "minor" burns in spite of,
and sometimes right through their protective clothing. Their
eyes, throats and lungs will be irritated and sore, sometimes
taking days to return to "normal." Some residual damage
may be permanent.
Do not subject anyone to this against their will. Do not permit
anyone to subject themselves to this if they already have significant
heart problems or a compromised respiratory system. Goggles or
masks may protect eyes and lungs, but stress can get to a weakened
heart despite any gear.
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Study and train
To stay with the intent to protect your home from a wildfire
puts you in the same boat as the professional firefighters. You
are taking on their jobs and risks with almost none of their
advantages of training, knowledge and teamwork. Reading this
booklet is not going to make up for these disadvantages. It will
only point out what you need to know.
We can, however, point you in the direction of useful knowledge
and materials you can read--study would be better--on your own:
o First, all the material on which this booklet is based is available
to anyone who wants to see it by contacting T-CEP at P.O. Box
1708, Topanga, CA 90290. There are books on firefighting available
in the T-CEP library and in the public library. Do the research.
o Second, T-CEP sponsors Red Cross First Aid and CPR courses
which should be part of your background.
o Third, T-CEP maintains a communication system activated in
an emergency designed to gather and disseminate information from/to
residents and official agencies. We would like to have a "correspondent"
in every neighborhood, who could keep us informed about what
the situation of the neighborhood is, and to whom we could pass
information. The telephone is part of this system, but telephone
poles burn down and cell phones also go down or become overloaded.
That's why we want to encourage people to use radios. We prefer
amateur radios that need licenses, but we can work with any kind
of radio that will reach our Emergency Operations Center from
your neighborhood. Radio is reliable because we control it and
batteries are cheap.
o Fourth, Station 69 is training a group of call firefighters
to crew a second engine. These volunteer firefighters are taking
the full Los Angeles County Fire Department course and have to
pass their physical tests. We would like to work with Station
69 to make some of these courses accessible to others. We think
that if there were some volunteers who wanted to learn more,
but who might not qualify as call firefighters, we can arrange
classes. Contact T-CEP.
o Fifth, volunteer for any one or more of the community groups
concerned with aspects of the fire danger. These include T-CEP
teams, Arson Watch, the Firesafe Committee, and any of the community
watch groups. There is safety as well as strength in joint action
against a common danger. The danger in Urban Interface areas
such as Topanga is dynamic, and so must your preparations be.
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Equipment necessities
Emphasis is on "necessities." These fall into two main
categories--personal protective equipment (PPE) and firefighting
equipment. Both categories contain many choices at many price
levels. The approach adopted here might be called the reasonable
minimum. That is, the levels of equipment suggested are what
would be expected to be effective, barring gross errors in judgment
or unforeseeable circumstances, at a cost an average resident
of Topanga could afford.
Note also that the suggestions in the following sections are
very brief. T-CEP maintains a set of catalogs available for browsing
and comparison. Call the Hot Line to arrange availability.
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Personal Protective Equipment
Starting with clothing, the absolute minimum is all-natural fiber
clothes, starting with socks and underwear and going to long
pants and a long-sleeved shirt that closes around the neck. Cotton
and wool do not support combustion well--they will not flash
into flame nor will flame spread rapidly from one part to another.
Artificial fibers, even if they will not support combustion,
will melt, making them stick to flesh and multiplying the effects
of burning. They are more difficult to rip off someone whose
clothing may be burning.
It is important that clothing act as a thermal insulator also,
as the heat radiated by the fire could itself cause burns or
make metal fittings so hot that they would cause burns. So don't
carry metal, coins or tools in pockets but in external pouches.
You might think that in hot weather it would be better to wear
shorts and short-sleeved shirts, but it is far more important
to keep as much of the radiant heat of the fire away from your
body as you can. This is a case not only of burn protection but
also of minimizing water loss and dehydration--think of desert
Arabs and their long robes and turbans.
Pictures of injuries suffered by firefighters trapped in the
1996 Calabasas fire dramatically show the advantage of dressing
in layers with a long-sleeved cotton t-shirt under the Nomex
brush jacket. One firefighter wearing a short-sleeved t-shirt
suffered second- and third-degree burns from the glove-line up
his arm to the hem of the t-shirt sleeve. From the hem of the
shirt upward he had only lighter first- and second-degree burns--no
picnic, but far preferable.
Shoes should be all leather, with no plastic or mesh to melt
or let in hot air or sparks. The last thing you want is to have
burned feet. Being unable to walk can leave you dangerously exposed
and difficult to rescue. The shoes should be high cut, preferably
boots six inches or more in height, in case you need to move
across a recently-burned patch of ground. To firefighters a burned-over
patch represents safety, but you'd better have footwear that
can take it.
Add cotton neckerchiefs to protect your neck, nose and mouth,
and a hat with a brim to cover your whole head. For $5 to $10
you can buy an approved hard hat which, considering all the stuff
that will be flying about and falling from trees, seems a wise
buy. Finally, add a pair of good goggles ($10-$20) to keep smoke
and hot ash out of your eyes, and you're done.
With the possible exception of the shoes/boots, virtually everyone
already has such an outfit or could rather easily afford one.
The next step up is a significant one. This involves purchase
of a set of outerwear called a brush outfit. These can be had
in heavy cotton canvas fabrics treated for fire resistance, or
the artificial fiber known as Nomex which is fireproof. The outfit
consists of loose-fitting trousers to go over a pair of pants,
and a loose jacket. A set will cost from less than $100 for fire
resistant cotton, to as much as $300 for the Nomex. They are
available from many suppliers by mail order or from a local Los
Angeles company. There are many variants-the local company supplies
Los Angeles County and City Fire Departments-but any of them
will do.
If you are going to spring for Nomex you will certainly want
a hard hat. You may also want to spend another $100 or so on
a good filter mask to protect your nose, throat and lungs from
smoke, soot and hot embers.
All told a reasonable set of PPE as a private individual staying
to protect your own home will cost anywhere from perhaps $200
(including good boots) to $500-$600.
NOTE WELL: Do not try to use wet cloths
or kerchiefs to keep cool or keep smoke out of your lungs. Dr.
Radtke, as many other people, advises doing so, but his assumption
is that people will not be attempting to deal directly with the
fire. A wet kerchief will filter at least some of the smoke particles
and pollutants.
However this is unsafe, except at considerable distance from
the fire. In the first place, at close range the heat of the
fire will suck up moisture almost as fast as you can pour it
on. More seriously, if you get too close and a blast of super-heated
air catches you, that water can flash to steam almost instantly.
Scalding burns are very serious, and such burns about the face
or in the airways can be life-threatening.
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House Protection
Most homes and other structures can be defended against wildfire
if certain precautions have been taken beforehand. It boils down
to an equation taking into account the heat load on the structure
and the duration of the load. The higher the heat and the longer
it lasts the more likely the structure will be lost. Anything
that reduces the heat load by maintaining space between the structure
and the fire will make a structure more likely to survive. Also,
the longer the structure can tolerate high heat without bursting
into flame the more likely it is to survive.
This is captured in Figure 14 (see print edition) copied from
work being done at the U.S. Forest Service Fire Sciences Laboratory
in Missoula, Montana. There, Dr. Cohen is developing a comprehensive
Structure Ignition Assessment Model (SIAM) for use by fire agencies
as well as homeowners. This is intended to be a more realistic
and reliable guide than the simple models introduced earlier
from Virginia and Utah.
Keep in mind that the most dangerous wildfire in Topanga is being
driven by Santa Ana winds--which means that it is likely to pass
over or around a structure within a few minutes--so exposure
to heat may be severe, but of short duration. Exactly how it
would affect any particular structure cannot be predicted, but
this is a factor that needs to be considered.
For present purposes we will assume that brush has been cleared
to local codes and that a minimum of a 30-foot defensible area
immediately around the structure/home has been cleared. We will
also assume that the roof is at least a Class A fire resistant
roof and that vents have been protected. What can a homeowner
or group of neighbors do to actively protect their homes?
A short list of feasible alternatives is:
1. Provide a source of water matched to the size of the structure(s)
to be protected. The volume of water in gallons should be equal
to or exceed the total volume of the structure to be protected
expressed in cubic feet. This works for individual homes of normal
home construction
2. Provide sufficient quantities of firefighting foam or gel
3. Provide sufficient hose to reach all parts of the structure(s)
4. Provide a pump of sufficient capacity
Sources of water for firefighting have to be provided by the
homeowner. Unfortunately, for many reasons and over a long period
Topanga has outgrown its piped water supply. We cannot be certain
that in a major wildfire sufficient water at the needed pressure
will be available everywhere in the Canyon.
A swimming pool is an excellent source of water for firefighting
and is usually more than sufficient for the home it is attached
to. For an individual home the solution is a floating pump which
draws directly from the pool. Several manufacturers are available
and have local dealers. The cost is in the range of $1,400-$3,000.
Given the cost of replacing a home (or the sheer hassle of dealing
with the aftermath even if the insurance company is cooperative)
this does not seem an unreasonable figure.
Pumps and hose, however, require some maintenance and some training,
both of which are continuing items. One cannot leave such equipment
to gather dust for years at a time and expect it to function
perfectly. Nor can one expect a person to operate such equipment
in a real situation without periodic drills and practice.
Any reservoir of water will do--fish pond, water tanks required
as a condition of building, or tanks purchased for the purpose
of providing a firefighting reserve. I have two plastic tanks
totalling about 1,300 gallons which I keep filled with winter
runoff from my roof gutters.
Those 1,300 gallons are insufficient water for my house. They
are sufficient when used in a foam or gel system to cover my
house. Foam and gel are the latest additions to the homeowner's
tools for self-defense. They work by capturing water in a relatively
stable form that will cling to surfaces. When the heat from the
fire arrives, it evaporates the water which keeps the underlying
structure relatively cool. If other defensive measures have been
effective and the fire moves on quickly enough, then the foam
or gel will have done its job.
The tactics in case of the use of foam/gel are to foam the structure
some time before the fire-front arrives. Just how long before
is a matter of judgment and how long the foam/gel can be expected
to remain effective. The homeowner can then go to a safe place
to wait for the fire to pass. If this safe area is close to the
home, the owner can return to deal with the fire's aftermath--smoldering
embers, spot fires or whatever.
Houses are lost to these causes after surviving the main fire
if no one is around to catch them. Perhaps the major advantage
of the foams/gels is that an owner can take protective action,
retreat to a safe place and yet return soon enough to deal with
the embers and small fires. Using water alone, the owner has
to stay throughout to keep the structure cool and wet until the
fire-front has passed. Of course, the users of foams/gels must
have prepared this safe place. The safe place, however, may be
the house itself.
The maintenance and training requirements for foam/gel users
are just as strict as for the users of water systems.
We have catalogs of hoses and pumps. How many and what kind of
each are technical questions. The requirements for these are
similar for water-only and foam/gel systems.
An alternative foam system uses pressurized nitrogen gas to lay
foam over the whole house through a system of pre-installed pipes.
One advantage of the system is that it can be triggered automatically.
The other systems require that someone be present to operate
them. These are large, relatively expensive systems that only
experts can design and install. They minimize the burden on the
homeowner and will operate even if the house is unattended.
A potential disadvantage is that these are one-time use systems
that have to be maintained and reloaded after each use. It does
sometimes happen that a change in wind speed or direction will
cause a fire to reverse itself or come around to a previously
burned area a second time. If there is sufficient unburned fuel
to sustain the fire, or if embers are tossed up by the wind,
a second threat could be created.
However, as we said, a wildfire is a complex phenomenon. Many
strange and unusual things will occur in the course of any significant
fire and most of them cannot be foreseen. Which of these general
kinds of systems are a best fit for an particular home, structure
or neighborhood is a function of particular characteristics.
A list, far from comprehensive, of dealers in these systems is
in Appendix A.
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Maintain Your Priorities
We have referred perhaps too often to the unpredictability of
wildfires. We have done so, however, out of concern that some
people fall victim to an alluring fallacy. Sometimes increased
safety measures have the paradoxical effect of making the situation
less safe. People are often moved to adopt increased safety measures
because they become uncomfortable with their assessment of the
risks they see around them. Safety measures reduce that apprehension.
But the reduced perception of risk may allow, or even encourage,
people to accept a higher level of risk than they otherwise would.
Thus, providing sources of water, pumps and hoses might encourage
some people to be less than diligent about brush clearing or
maintaining a defensible space around their homes. Worst of all,
false confidence may cause some people to run risks they should
not, or lead them to delay evacuation until too late. Having
a good Nomex brush suit and face mask might encourage some people
to get closer to a fire than they otherwise might.
These people are making a bad trade--they are trading away their
safety margin by accepting a higher level of risk.
Maintaining your priorities means remembering that all the precautions
you took were not designed to make you a firefighter. They were
designed to increase the likelihood that a valuable asset--your
home--would survive a local hazard.
But, your most valuable asset is your life and the lives of your
family. Don't let the warm feeling of having accomplished one
purpose make you lose sight of a higher one.
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Much more to come
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