Public Notice for Sinclair Casper Refining Company Permit Application








            The Sinclair Casper Refining Company (Sinclair) is hereby giving notice that on November 18, 2016 the Wyoming Department of Environmental Quality (WDEQ) made a determination that Sinclair’s September 21st, 2016 Hazardous Waste Management Facility (HWMF) Permit Application (Permit Application) meets the requirements of Chapter 1 of Wyoming’s Hazardous Waste Rules and Regulations (HWRR).  WDEQ intends to issue Sinclair a Draft HWMF Permit in late 2016.  The Draft Permit will be available for public review and comment.  This notice is given in accordance with HWRR Chapter 1, Section 124(d). 


            Sinclair’s January 1, 2006 HWMF Permit will expire on January 1, 2017.  The Permit Application was submitted to WDEQ as application for a new HWMF Permit to continue hazardous waste management and corrective action activities that are currently being conducted under the January 1, 2006 HWMF Permit.  The Permit Application includes operating requirements for a hazardous waste surface impoundment known as the “Aggressive Biological Treatment Unit” (ABTU) for treatment of benzene contaminants in refinery waste water, closure and post-closure requirements for two other inactive regulated units (API Surface Impoundment and Primary Effluent Pond), storage tank requirements for storage of API Separator Sludge in the K051 Tank, and corrective action activities for all Waste Material Management Units (WMMUs). In addition to the hazardous wastes identified above, the facility generates fourteen other types of hazardous wastes that are managed at permitted off-site hazardous waste facilities.    


            The Sinclair facility is located at 5700 East Highway 20/26 on the east side of the town of Evansville, just east of Casper, Wyoming.  The facility is located on the south bank of the North Platte River (NPR), and the main refinery is located approximately one-quarter mile south of the south bank of the NPR.  Refinery effluent ponds known as the “North Evaporation Ponds” (NEP), are located across the NPR from the refinery.  The facility on the south side of the NPR encompasses approximately 250 acres.  The NEP area encompasses approximately 1600 acres.  It is anticipated that the refinery will continue operations for a minimum of thirty-five years.