NAVMED P-5010-8 - Navy Medicine - U.S. Navy

8-54 CHAPTER 8. NAVY ENTOMOLOGY AND PEST CONTROL TECHNOLOGY 8-54
f. Vehicular mounted sprayers are too large
to be easily handled by one person. They are
mounted or placed on a vehicle or trailer. ULV
application is achieved by the cold or thermal
foggers used in mosquito control. This method
provides a contact pesticide control and leaves
little or no residual. Hydraulic sprayers apply a
high volume (HV) of residual as demonstrated for
fly control at landfills, or residual treatment of
vegetation for adult mosquito control or mosquito
larvae breeding sites. Trailer mounted sprayers,
such as the buffalo turbine, can be used for
residual applications from mists for vegetation to
granules for larval breeding sites. These larger
sprayers are operated by either four-stroke engines
or electric motors. A thorough understanding of
the equipment is critical for operation, calibration,
and maintenance. A vehicle or trailer is needed,
including accessibility to the target area, either by
road or terrain that allows wheeled vehicles.
Some hydraulic sprayers have been mounted in
boats for transportation along waterways or lakes.
In this way, large areas may be sprayed quickly
allowing for greater protection against disease
vectors.
g. Air dispersal equipment allows for greater
dispersal of pesticide over large areas quickly.
However, aircraft capable of transporting the
pesticide equipment must be available at the
optimal times for effective vector control.
(1) Helicopter Sprayers. The Navy,
Marine Corps, and the Army do not have dedicated
helicopters for pesticide application. This
must be coordinated with the squadron commanders.
Orientation of the flight crews regarding
proper aerial application and vector control procedures
are essential to ensure effective pesticide
application by air. These units are good for areas
not easily accessible for vehicular sprayers, i.e.,
marshes or heavily wood areas, but too small to
justify the Air Force fixed wing sprayer. However,
if aircraft are not available, the units cannot
be used.
(a) The Navy Pesticide Aerial Cargo
Unit Number 9 (PACU-9) has a 60-gallon liquid
capacity and primarily applies ULV. Depending
on the pesticide application rate, up to 7,500 acres
could be sprayed per tank. It is attached inside the
aircraft with a 12-foot boom extending out the
starboard cargo door. It is approved for H-1 and
H-3 helicopter platforms, but any platform that
uses Davis tie-downs and compatible electronics
can be used. The PACU-9 relies on aircraft
electrical power for operation.
(b) The Army Pesticide Dispersal
Unit (PDU) has a 150-gallon capacity. As an
underslung unit, it can apply ULV, HV, and solid
formulations. It is self-powered by an 11 hp gasoline
engine and can be flown from any helicopter
with a cargo hook. Depending on application rate,
up to 19,000 acres could be sprayed per tank.
(2) Fixed Winged Sprayers. The Air
Force Modular Aerial Spray System (MASS) is
the only authorized fixed wing aerial spray system
in DOD. It is carried on dedicated C-130’s with
dedicated trained crews and has a 2,000-gallon
capacity. It delivers ULV to HV, but has no solid
formulation dispersal capabilities. This capability
allows for extremely large areas, up to 250,000
acres, to be sprayed, but is not feasible or economical
for small areas more appropriately sprayed
with the helicopter sprayers.
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