  Using the extremely high S/N quasar absorption-line sample described in the
first paper of the series, we investigate which intergalactic CIV absorption
line systems could be directly associated with galactic outflows at z = 2 - 3.5
from an analysis of the velocity widths of the CIV absorption line systems.
Only about half the systems with a peak tau(CIV) above 0.4 in the 1548 Angstrom
line (roughly a column density of CIV above about 2 x 10^13 cm^-2) have
velocity widths large enough to originate in this way, and very few of the
weaker systems do. The median velocity full width at a tenth max is found to be
50 km/s for systems with peak tau(CIV) in the range 0.1--0.4 and 160 km/s for
systems with a peak tau(CIV) in the range 0.4--3. We show that this critical
value of tau(CIV) also separates systems that could be ionized by galaxy-like
spectra from those in which the ionization is clearly AGN-dominated. Together
the results are consistent with a picture in which almost all the lower column
density, and at least half the higher column density, systems lie in the more
general IGM whereas about half of the higher column density systems could be
produced directly by the outflows and possibly be ionized by their parent
galaxies.
