  We investigate the use of stochastically estimated light quark propagators in
correlation functions involving a static color source. To this end we compute
the static-light meson pseudoscalar correlation function in the stochastic LapH
framework, using an ensemble of $N_f= 2+1$ gauge configurations generated
through the CLS effort. We extract the static-light as well as the
static-strange mass with good statistical precision. Together with the static
potential, we obtain a preliminary estimate for the expected mixing region.
