The Colorado Oil and Gas Conservation Commission (COGCC) has prepared this model sampling and analysis plan for parties who engage in sampling and analysis activities for Rule 609 - Statewide Groundwater Sampling and Monitoring and Rule 318A.e(4) - Groundwater Baseline Sampling and Monitoring in the Greater Wattenberg Area (GWA). This document will be modified as necessary based on new procedures, protocols, and other information that need to be incorporated to meet the objectives of the new rules.