ARCHIVED REPORTS_COMBINED ANNUAL AND SECOND-HALF 2012 GROUNDWATER MONITORING REPORT 01-31-2013

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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION ORDER R5-2012-0105 WASTE DISCHARGE REQUIREMENTS FOR DIAMOND PET FOOD PROCESSORS OF RIPON, LLC AND RIPON COGENERATION, LLC DIAMOND PET FOOD RIPON FACILITY SAN JOAQUIN COUNTY The California Regional Water Quality Control Board, Central Valley Region (Central Valley Water Board), finds that: On 12 July 2011, Diamond Pet Food Processors of Ripon, LLC (hereafter Diamond) submitted a Report of Waste Discharge (RWD) to apply for revised Waste Discharge Requirements (WDRs) for an industrial wastewater discharge to land. Supplemental information was received in February, May and June 2012. 2. Diamond owns and operates the pet food processing facility and the associated wastewater treatment and disposal facility. Veresen, Inc. owns Ripon Cogeneration, LLC, whose neighboring power plant has historically discharged industrial wastewater to Diamond's wastewater treatment and disposal facility. Diamond and Ripon Cogeneration, LLC are hereafter jointly referred to as "Dischargers" and are responsible for compliance with these WDRs. 3. The Diamond pet food processing plant and the associated wastewater treatment/disposal facility is located at 942 South Stockton Avenue, Ripon in San Joaquin County, in Section 29, T2S, R8E, MDB&M. The Assessor's Parcel Numbers (APNs) are 259-340-09 and 259-340-10. The facility location is shown on Attachment A, which is attached hereto and made part of this Order by reference. 4. For the purposes of this Order, the term 'Wastewater Treatment Facility" (WWTF) shall mean the wastewater collection system, the wastewater treatment system, and the land application areas (LAAs). 5. The Diamond plant was formerly a paper mill, which was owned and operated by the Neenah Paper Fox River, LLC (hereafter Neenah). The paper mill was closed in May 2009 and there has been no discharge of process wastes from the paper mill since then. However, Ripon Cogeneration, LLC has continued to discharge industrial process waste to the WWTF. In October 2010, Diamond purchased the site and has refitted the industrial paper mill plant to manufacture pet food. 6. WDRs Order 5- 01-148, adopted by the Central Valley Water Board on 14 June 2001, prescribes requirements for the Neenah Paper Fox River LLC paper mill. The Order describes an average dry weather flow limit of 60 million gallons per month and a maximum daily flow limit of 2.5 million gallons per day (mgd). The purpose of this revision is to prescribe requirements for Diamond and Ripon Cogeneration, LLC and reduce the influent flow limit to 0.29 mgd as a monthly average. Therefore, Order 5-01-148 will be rescinded and replaced with this Order.