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COLORADO DEPARTMENT OF HEALTH, Water Quality Control Division <br /> Rationale - Page 3. Permit No. CO-0000396 <br /> DISCUSSION: <br /> 1. Total Recoverable Metals <br /> By federal register of September 26, 1984, EPA now allows the use of total <br /> recoverable metals effluent limitations in permits. Such limitations are <br /> no more restrictive than total metals limitations, and may be less <br /> restrictive. This change will not alter the sampling and sample <br /> preservation technique, but does warrant a change in the analytical <br /> procedure. It is therefore, important that the permittee alert its <br /> laboratory to this change. Water quality based iron limitations in this <br /> permit will be expressed as "total recoverable" iron. <br /> Jon C. Kubic <br /> March 2, 1987 <br />