ASAC Charges for September 2003 1) Calibration and Receiver Specifications. The ASAC should consider the scientific impact of failing to meet the current amplitude calibration goals (1%/3% below/above 300GHz), or the specifications on total power stability (which are currently 10^-4 over 1 second, 3 10^-3 over 5 minutes, 5 10^-4 over 5 minutes (differential gain of two polarizations). 2) The ASAC is invited to comment on the plans for and draft of the ALMA Design Reference Science Plan, and consider its usefulness, completeness and the level of detail it contains. 3) The ASAC is asked to comment on the draft Operations plan, and on any particular issues from the Operations Working Group communicated via the Project Scientist. 4) The ASAC is asked to revisit its report of April 2002 on the procedures for time allocation, and make any fresh comments or recommendations as appropriate. 5) The ASAC is asked to comment on the opportunity to allow P.I.instruments on the ALMA telescope.