  We present results on spectra of pions, kaons and (anti)protons from a study
of heavy ion collisions using the perturbative QCD + saturation model to
calculate the production of initial (transverse) energy and baryon number
followed by a hydrodynamic description of the expansion of produced matter. In
particular, we study how the hadron spectra and multiplicities depend on the
decoupling temperature $\Tdec$ when the low temperature phase contains all
hadrons and and hadron resonances with mass below 2 GeV. We show that the
spectra and multiplicities of pions, kaons and (anti)protons measured at RHIC
in central Au+Au collisions with $\sqrt s=130$ GeV can be obtained with a
single decoupling temperature 150$...$160 MeV, common for both the chemical and
the kinetic freeze-out.
