Res 2005-105 - Laserfiche WebLink

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City of San Marcos TPDES Permit No. WQOOI0273002 b. Three alternatives are available to demonstrate compliance with Class B criteria for sewage sludge. Alternative I - 1. A minimum of seven random samples of the sewage sludge shall be collected within 48 hours of the time the sewage sludge is used or disposed of during each monitoring episode for the sewage sludge. 11. The geometric mean of the density offecal coliform in the samples collected shall be less than either 2,000,000 MPN per gram of total solids (dry weight basis) or 2,000,000 Colony Forming Units per gram oftotal solids (dry weight basis). Alternative 2 - Sewage sludge that is used or disposed of shall be treated' in one of the Processes to Significantly Reduce Pathogens (PSRP) described in 40 CFR Part 503, Appendix B, so long as all of the following requirements are met by the generator of the sewage sludge. i. Prior to use or disposal, all the sewage sludge must have been generated from a single location, except as provided in paragraph v. below; 11. An independent Texas Licensed Professional Engineer must make a certification to the generator of a sewage sludge that the wastewater treatment facility generating the sewage sludge is designed to achieve one of the PSRP at the permitted design loading of the facility. The certification need only be repeated if the design loading of the facility is increased. The certification shall include a statement indicating the design meets all the applicable standards specified in Appendix B of 40 CFR Part 503; lll. Prior to any off-site transportation or on-site use or disposal of any sewage sludge generated at a wastewater treatment facility, the chief certified operator of the wastewater treatment facility or other responsible official who manages the processes to significantly reduce pathogens at the wastewater treatment facility for the pennittee, shall certify that the sewage sludge underwent at least the minimum operational requirements necessary in order to meet one of the PSRP. The acceptable processes and the minimum operational and record keeping requirements shall be in accordance with established U. S. Environmental Protection Agency fmal guidance; iv. All certification records and operational records describing how the requirements of this paragraph were met shall be kept by the generator for a minimum of three years iUld be available for inspection by conunission staff . for review; and v. If the sewage sludge is generated from a mixture of sources, resulting from a person who prepares sewage sludge from more than one wastewater treatment facility, the resulting derived product shall meet one of the PSRP, and shall meet the certification, operation, and record keeping requirements of this paragraph. Alternative 3 - Sewage sludge shall be treated in an equivalent process that has been approved by the U. s. Environmental Protection Agency, so long as all of the following requirements are met by the generator of the sewage sludge. 1. Prior to use or disposal, all the sewage sludge must have been generated from a single location, except as provided in paragraph v. below; ii. Prior to any off-site transportation or on-site use or disposal of any sewage sludge generated at a wastewater treatment facility, the chief certified operator of the wastewater treatment facility or other responsible official who manages the processes to significantly reduce pathogens at the wastewater treatment facility for the permittee, shall certify that the sewage sludge underwent at least the minimum operational requirements necessary in order to meet one of the PSRP. The acceptable processes and the minimum operational and record keeping requirements shall be in accordance with established U. S. Environmental Protection Agency [mal guidance; Ill. All certification records and operational records describing how the requirements ofthis paragraph were met shall be kept by the generator for a minimum of three years and be available for inspection by connrussion staff for review; IV. The executive director will accept from the U. S. Environmental Protection Agency a fmding of equivalency to the defmed PSRP; and Page 14