The Consumer Product Noise Impact Model (CPNIM) was written to assess the impact of noise from consumer products on the public. Two versions of this program have been provided. The first, and easiest to operate, is interactive in nature and is designed to be operated by a person possessing virtually no computer skills. It operates in the Time Sharing mode as opposed to the 'Batch' mode and is, as such, more expensive to run, but the extent of the user's knowledge of the programs workings is limited to how to start the program. The second version is designed to operate in the Batch mode. To operate this version the user must be capable of using the terminal to build files for input data and submitting a batch job for execution. All steps are carefully explained in this manual but some knowledge of computing systems is helpful. Because of the Batch operation, this version is much less expensive to run, but the turn around time will be longer.