Riverbank Army Ammunition Plant Specific Plan

The proposed vertical well (Aemetis Riverbank #1) will be a stratigraphic test well to collect data on subsurface geology. This project includes only the completion of the initial well to provide data that will help determine whether the site is a feasible location for future carbon storage and to plan for that storage. The objective is to deepen the well from shoe of the existing conductor. The well would be drilled at the Riverbank pad located in the northeast quadrant of the Riverbank Army Ammunition Plant (RAAP) property. If the site is determined to be suitable, permitting of any future carbon storage activity will be a separate activity, principally through EPA’s Class VI UIC program. Well construction and drilling activities will last approximately two months. A gravel access road and well pad already exist at the site, and no additional road construction is necessary. The well conductor has also already been installed. Additional temporary facilities include moving a drill rig to the well pad, generators, trailers for the well site crew, and a closed loop mud system. The only permanent onsite facilities after drilling operations are complete will be the wellhead (in addition to the already existing well pad and gravel access road). Noise reduction during drilling will include the use of a 24-foot-high sound barrier wall to protect the single residence to the north of the site. Nine standard 53-foot-long 18 wheelers will deliver the necessary rig equipment and drill pipe/casing to the site. The equipment is designed to stand on its own. Rig setup will require two days. Four to six fluid storage tanks will be delivered and remain at the site for water and mud storage during drilling operations. An additional two roll-off storage tanks will be delivered and remain at the site for tailings storage. Three RV-type trailers will remain at the site throughout the construction for on-site personnel offices. Daily traffic to and from the site will include approximately 15 standard pickup trucks per day for personnel working shifts on the rig (10-mile route), two to four standard pickup trucks per day for tool and other maintenance services (30-mile route). On average, one mud delivery truck per day for 10 days will arrive on site (240-mile route). About sixteen trucks will be used to dispose of tailings with a 60-mile route for each truck. On average, seven cement trucks will arrive on site for well cementing operations over two days (160-mile route) when installing the surface casing. Water for activities at the site will be obtained from Riverbank Industrial Complex existing wells. A maximum one acre-foot of water (< 200,000 gallons) will be obtained for the well site operations. This water will be moved within the property by an 8,000-gallon water truck. All tailings material generated during drilling is estimated to be 280 tons and will be sent to solids disposal at a nearby non-hazardous waste landfill. The location is at the Riverbank Industrial Complex in the city of Riverbank, Stanislaus County, California. Section: 31, Township 2S, Range 10E, Mt. Diablo. It is in a field off of Claus Road and Kentucky Avenue, in the northeast corner of the Riverbank Industrial Complex. The environmental setting is described in detail in the EIR and Addendum. The project site is within the Riverbank Industrial Complex. There are no habitable structures within 300 feet of the well site. The site is surrounded by agricultural land to the north and east. To the west, at a distance of approximately 1,300 feet, there are residential areas. The City of Riverbank has indicated the construction and well drilling activities are considered light industrial activity. This falls within the current zoning and does not require a conditional use permit. The City of Riverbank has already issued a grading permit to construct the access road and well pad, and a noise permit to allow for 24-hour drilling operations. The project activity(s) being permitted by the California Geologic Energy Management Division (CalGEM) is within the scope of the Riverbank Army Ammunition Plant Specific Plan Addendum to the Environmental Impact Report. CalGEM, as the CEQA Responsible Agency, approved permit(s) for Aemetis Carbon Capture, Inc. to drill the well listed below, in Stanislaus County. API #: 0409920056 Well Name: Aemetis Riverbank CO2 1 Latitude : 37.72221400 Longitude : -120.91767400