ENVIRONMENTAL FINAL GOVERNING STANDARDS ITALY

ITALY - 2 Air Emissions
C2.3.6.8.2. Emergency releases for the legitimate purpose of fire extinguishing,
explosion inertion, or other emergency applications for which the equipment or systems were
designed.
C2.3.6.8.3. Releases during the testing of fire extinguishing systems if each of the
following is true: systems or equipment employing suitable alternative fire extinguishing agents
are not available; release of extinguishing agent is essential to demonstrate equipment
functionality; failure of system or equipment would pose great risk to human safety or the
environment; and a simulant agent cannot be used.
C2.3.7. Motor Vehicles. These criteria apply to DoD-owned motor vehicles as defined in
the definitions section (C2.2.13.).
C2.3.7.1. All vehicles shall be inspected every two years to ensure that no tampering
with factory-installed emission control equipment has occurred. CO emissions for gasoline
vehicles manufactured according to European specifications after 1986 will not exceed 3.5% in
volume. For gasoline vehicles manufactured in Europe prior to 1986, the CO emission will not
exceed 4.5% in volume. Motor vehicles manufactured according to European specifications and
equipped with diesel engines will not exceed a 50% opacity (45% for buses).
C2.3.7.2. Use only unleaded gasoline (with a maximum lead content of 0.013 g/L) in
vehicles that are designed for this fuel. The maximum lead content for lead-bearing gasoline is
0.15 g/L.
C2.3.8. Stack Heights. Hg is the good engineering practice stack height necessary to
minimize downwash of stack emissions due to aerodynamic influences from nearby structures.
C2.3.8.1. Stacks shall be designed and constructed to heights at least equal to the largest
Hg calculated from either of the following two criteria:
C2.3.8.1.1. Hg = H + 1.5L, where H is the height of the nearby structure measured
from the ground level elevation at the base of the stack, and L is the lesser of height or projected
width of the nearby structure(s). A structure is determined to be nearby when the stack is located
within 5L of the structure envelope but not > 0.8 km (0.5 mile). This calculation shall be
performed for each structure nearby the stack being studied to determine the greatest Hg.
C2.3.8.1.2. Hg is the height demonstrated by a fluid model or a field study, which
ensures that the emissions from a stack do not result in maximum ground-level concentrations of
any air pollutant as a result of atmospheric downwash, wakes, or eddy effects created by the
source itself, nearby structures, or nearby terrain features at least 40% in excess of the maximum
ground-level concentrations of any air pollutant experienced in the absence of such atmospheric
downwash, wakes, or eddy effects. For purposes of this paragraph, “nearby” means not > 0.8 km
(0.5 mile), except that the portion of a terrain feature may be considered to be nearby, which falls
within a distance of up to 10 times the maximum height (Ht) of the feature, not to exceed 3.2
kilometers (2 miles) if such feature achieves a height (Ht) 0.8 km from the stack that is at least
40% of the good engineering practice stack height determined by the formulae provided in
C2.3.8.1.1. of this part or 26 meters (85.3 feet), whichever is greater, as measured from the
September 2012 Italy FGS 2-10
Revision 0