[en] The Argonne Radiological Impact Program (ARIP) is an ongoing project that aims at developing methodologies for assessing the carcinogenic hazards associated with nuclear power development. The current report (Part II) treats the storage and access of available data on radiation and radioactivity levels in the U.S. A computer code (the MONITOR program) is presented, which can serve as a ready-access data bank for all monitoring data acquired over the past two decades. The MONITOR program currently stores data on monitoring locations, types of monitoring efforts, and types of monitoring data reported in Radiation Data and Reports by the various state and federal networks; expansion of this data base to include nuclear power facilities in operation or on order is on-going. The MONITOR code retrieves information within a search radius, or rectangle, circumscribed by parameters of latitude and longitude, and lists or maps the data as requested. The code, with examples, is given in full in the report