  We present a high resolution spectrum of the quasar, HS1603+3820
(z_em=2.542), observed with the High Dispersion Spectrograph (HDS) on Subaru
Telescope. This quasar, first discovered in the Hamburg/CfA Quasar Survey, has
11 C IV lines at 1.96 < z_abs < 2.55. Our spectrum covers 8 of the 11 C IV
lines at z_abs > 2.29 and resolves some of them into multiple narrow components
with b < 25 km/s because of the high spectral resolution R=45000, while other
lines show broad profiles (b > 65 km/s). We use three properties of C IV lines,
specifically, time variability, covering factor, and absorption line profile,
to classify them into quasar intrinsic absorption lines (QIALs) and spatially
intervening absorption lines (SIALs). The C IV lines at 2.42 < z_abs < 2.45 are
classified as QIALs in spite of their large velocity shifts from the quasar.
Perhaps they are produced by gas clouds ejected from the quasar with the
velocity of v_ej = 8000 km/s -- 10000 km/s. On the other hand, three C IV lines
at 2.48 < z_abs < 2.55 are classified as SIALs, which suggests there exist
intervening absorbers near the quasar. We, however, cannot rule out QIALs for
the two lines at z_abs ~ 2.54 and 2.55, because their velocity shifts, 430 km/s
blueward and 950 km/s redward of the quasar, are very small. The C IV line at
z_abs ~ 2.48 consists of many narrow components, and has also corresponding
low-ionization metal lines (Al II, Si II, and Fe II). The velocity distribution
of these low-ionization ions is concentrated at the center of the system
compared to that of high-ionization C IV ion. Therefore we ascribe this system
of absorption lines to an intervening galaxy.
