The AMS program at the Chalk River TASCC (Tandem Accelerator Superconducting Cyclotron) facility is directed toward Cl-36 measurements in hydrological and other samples. The automatic data acquisition/accelerator control system has been commissioned and progress is reported on particle identification with a Bragg-type detector and S-36 background control with a gas-filled beamline magnet. Evidence for large Cl memory effects in a Hiconex 860 sputter source is also presented.