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COLORADO DEPARTMENT OF HEALTH, Water Qua!!n' Control Division Rationale -Page 19 Perntit No. CO-0045675 6. Economic Reasonableness Evaluation: (cont.) evaluation shows that this is a new permit which wns not in existence at the time of water quality standards rulernaking. However, based on m~ailab[e data, the resulting water quality standard-based effluent limimtions are determined to be reasonably related m the economic, environmental, public health, and energy impacts to the public and affected persons. /f the pennittee disagrees xith this finding, pursuant to 6/.11(62) (ii) of the Colorado Discharge Permit System Regulations, the permittee should submit all pertinent injonnation to the Division during the public notice period. 7. Waste Minimi-ation/Pollution Prevention Waste minimization and pollution prevention are tx~o terms that are becoming increasingly more common in industry today. Waste minimization includes reducing the amount of x'aste at the source through changes in industrial processes, and reuse and recycling of wastes jor the original or some other purpose (such as materials recovery or energy production). Pollution prevention goes hand-in-hand with waste minimization. /f the waste is eliminated at the front ojthe line, it rill not have to be treated at [he end of the line. The direct benefits to the industry are often significant, both in terms of increased profit and in public relations. This program can affect all areas of process and x'aS[e COn[/al NTth x'hlCli an industry deals. Elimination or reducnon oja x~astewater pollutant can also result in a reduction in an air pollutant or a reduction in the amount of hazardous materials which must be handled or disposed. This discharge permit does not specifically dictate waste minimization conditions at this time. The Division does strongly encourage the permirtee to continue working in developing and implementing a waste minimization plan. Several industries have already developed plans and found drat implementation resulted in substantial savings. Both the Colorado Deparment of Public Health & Environment and EPA have information and resources available. For more in-depth information, please contact these agencies. V/.A. Monitoring /. Effluent Monitoring: Table VI-4 below lists the monitoring requirements for this facility, including sample type and. Jrequency. Table V/-4 -Monitoring Requirements for Discharge Poirtls OOIa, 0016, and OOIc Parameter Measurement Frequeacy Sample Type Ffow, MGD Daily Instantaneous or Oil and Grease, rng/l Daily Visual pH, s. u. Daily /n-Situ Total Suspended Solids, mg/l Monthly Grab Chronic WET Testing Quarterly 3 Composites/Test Potentially Dissolved A[urninurn, mg/l Monthly Grab Total Arsenic, mg/l Monthly Grab Potentially Dissolved Cadmium, mg/[ Weekly Grab Potentially Dissolved Copper, rng/( Weekly Grab Dissolved Iron, rng/l Weekly Grab Total Recoverable Iron, rng/l Montlt[y Crab Potentially Dissolved Lead, mg/l Monthly Grab Dissolved Manganese, mg/l Weekly Grab Total Recoverable Manganese, mg/! Weekly Grab Total Radium 226+228, pCi/[ Monthly Grab Total Selenium, rng/1 Monthly Grab Potentially Dissolved Silver, mg/1 Weekly' Grab Total Natural Uronium, mg/[ Mont/sly Grab Potentially Dissolved Zinc, rng/l Weekly Crab Total Fluoride, rng/l Weekly Grab Toml Sulfate, rrrg/I Weekly Grab !f a visible sheen is noted, a grab sample s/ml[ be collected and analyzed jor oif and grease. flee results nre to be reported on the OMR under parameter code na. 03582.