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COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT, Water Quality Control Division Rationale-Pagell, Permit No. CO-0032115 1. S~natorv and Certification Requirements: Signatory and certif:catlon requirements for reports and submittals are discussed in Part I.E.6. of the permit. 2. Compliance Schedules: All information and written reporu required by the following compliance schedules should be directed to the Permits Unit for final review unless otherwise stated. a. Twelve Time Analvsts: To ensure that the water qualiry standards for total recoverable (TR) arsenic, TR cadmium, TR copper,. total trivalent chromium, TR lead, TR selenium, and TR zinc are being protected, the permiuee shall conduct special effluent sampling for the appropriate metals at outfalls Oll, 017, 019, 020, 021, 013, as shown in Table VI-8 and in Part L8.3. of the permit beginning July 1, 2004, and following once per month thereafter. Twelve consecutive monthly grab samples steal! be collected at each applicable outfall and analyzed with al! raw data being submitted at the end of the sampling period. A summary report in the form of a letter shall be submitted ro the Permits Unir by September 30. 2005. This report shall include all sample results collected over the twelve month period. Ifa series ojsampling is incomplete for one or more outfalls, this shall be noted in the report. For those outfalls far which sampling has not yet been completed by this date, the twelve time analysis requirement shalF continue until twelve samples have been collected and analyzed and the results submitted to the Permits Unit. The Division acknowledges that same outfalls normally do not discharge. Therefore, if discharge commences at any of these outfalls for a short period, this special monitoring shall occur during that period. If when the discharge ceases, discharge is not expected to occur again for theforeseeablefuture, the permittee shall contact the Permits Unit to discuss whether the data collected to date should be submitted at that time. If the perminee has a recent data base (1998 or more recent) that includes these parameters for one or more outfalls, these previous data may be included in the data set(s) as applicable. All raw data shall be submitted, not just summaries. If the monitoring shows that there is a reasonable potential for any of these parameters to cause exceedence of the applicable water quality standards, the permit maybe reopened to add limits and/or monitoring subject to public notice requirements. Code Event Permit Citation Due Date 50008 Submit a summary report ofall twelve monthly results Parts I.A.S. and7.B.3. 9/30/05 with cover letter to the Permits Unit. b. Materials Containment Plan: Previously, thepermittee submitted an engineered spillplan. An update to.thep/an is required to be filed within 90 days of the permit effective date, detailing all changes that have occurred since the original submittal. If no changes have occurred, a lener ro this effect is required. For specfrc requirements, refer to Part I.D.1. of the permit. E. Waste Minimization/PollutionPreventian Waste minimization and pollution prevention are two terms that are becoming increasingly more common in industry today. Waste minimization includes reducing the amount of waste at the source through changes in industrial processes, and reuse and recycling of wastes for the original or some other purpose (such as materials recovery or energy production). Pollution prevention goes hand-in-hand with waste minimization. If the waste is eliminated at the front of the line, it will not have to be treated at the end of the line. The direct benefits to the industry are often significant, both in terms of increased proftt and in public relations. Thrs program can affect all areas ofprocess and waste control with which an industry deals. Elimination or reduction of a wastewater pollutant can also result in a reduction in an air pollutant or a reduction in the amount of hazardous materials that must be handled or disposed. This discharge permit does not specifically dictate waste minimization conditions at this time. The Division does strongly encourage the permittee to continue working in developing and implementing a waste minimization plan. Several industries have already developed plans and found that implementation resulted in substantial savings. Both the Colorado Department of Public Health and Environment and the Environmental Protection Agency (EPA) have information and resources available. For more in-depth information, please contact these agencies. Jon Kubic February 26, 2004 revised March 17, 2004 Lnst Revised: 4/29/1004