  We obtained X-ray spectra of the Seyfert 1 galaxy NGC~3516 in March 1995
using ASCA. Simultaneous far-UV observations were obtained with HUT on the
Astro-2 shuttle mission. The ASCA spectrum shows a lightly absorbed power law
of energy index 0.78. The low energy absorbing column is significantly less
than previously seen. Prominent O~vii and O~viii absorption edges are visible,
but, consistent with the much lower total absorbing column, no Fe K absorption
edge is detectable. A weak, narrow Fe~K$\alpha$ emission line from cold
material is present as well as a broad Fe~K$\alpha$ line. These features are
similar to those reported in other Seyfert 1 galaxies. A single warm absorber
model provides only an imperfect description of the low energy absorption. In
addition to a highly ionized absorber with ionization parameter $U = 1.66$ and
a total column density of $1.4 \times 10^{22}~\rm cm^{-2}$, adding a lower
ionization absorber with $U = 0.32$ and a total column of $6.9 \times
10^{21}~\rm cm^{-2}$ significantly improves the fit. The contribution of
resonant line scattering to our warm absorber models limits the Doppler
parameter to $< 160~\rm km~s^{-1}$ at 90\% confidence. Turbulence at the sound
speed of the photoionized gas provides the best fit. None of the warm absorber
models fit to the X-ray spectrum can match the observed equivalent widths of
all the UV absorption lines. Accounting for the X-ray and UV absorption
simultaneously requires an absorbing region with a broad range of ionization
parameters and column densities.
