2.1 All cement for plugging shall be an approved API oil well cement without volume extenders and shall be mixed in accordance with API standards. 2.2 Mud-laden fluid of at least 9-½ pounds per gallon with a minimum funnel viscosity of 40 seconds shall be placed in all portions of the well not filled with cement or other alternate material as approved by the director or the director's delegate. The hole shall be in static condition at the time the cement plugs are placed. 2.3 Cement plugs shall be set to isolate each productive horizon and usable quality water strata. 2.4 Cement plugs shall be placed by the circulation or squeeze method through tubing or drill pipe. 2.5 All cement plugs, except the top plug, shall have sufficient slurry volume to fill 100 feet of hole, plus 10% for each 1,000 feet of depth from the ground surface to the bottom of the plug. 2.6 A cast iron bridge plug may be placed immediately above each perforated interval, provided at least 20 feet of cement is placed on top of each bridge plug. A bridge plug shall not be set in any well at a depth where the pressure or temperature exceeds the ratings recommended by the bridge plug manufacturer. 2.7 For onshore or inland wells, a 10-foot cement plug shall be placed in the top of the well, and casing shall be cut off three feet below the ground surface. 2.8 De-water and backfill all pits and contour the location to discourage pooling of surface water around the well site. 2.9 Dispose of plugging-related fluids at an RRC authorized disposal facility. Methane measurement and monitoring services will be performed according to American Carbon Registry’s standard. 2.10 Vendor shall acquire title to and market carbon credits generated through the plugging of wells. 2.11 Vendor shall issue a rebate to the Commission that offsets the costs of plugging.