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<br />. <br /> <br />sources as well as economic and institutional mechanisms for their <br /> <br />. <br /> <br />implementation. <br /> <br />The controls which can be implemented with the aid of PL 92-500 <br /> <br />must deal with sources of problems, as well as problems of use, as- <br />. <br /> <br />. <br /> <br />~ <br />o <br />~ <br />0') <br /> <br />sociated with the following major activities systems: <br /> <br />1. Natural Processes <br />2. Agriculture Irrigation <br />3. Urban and Rural Watersheds <br />4. Municipal <br />5. Mining and Industrial <br />6. Energy Production <br />7. Environmental, Recreation, Aesthetics <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />Technological and management controls available to deal with <br /> <br />these sources may be grouped ill. the following classifications: <br /> <br />. <br /> <br />1. Resource control (e. g., mining and manufacturing) <br /> <br />2. Resource and land management practices <br /> <br />3. Management of pollutant discharges <br /> <br />. <br /> <br />4. Treatment or remedial measures <br /> <br />Additional measures to implement these controls are: <br /> <br />1. Economic - supply and demand <br /> <br />. <br /> <br />2. Administrative <br /> <br />3. Judicial <br /> <br />. <br /> <br />As an overview, the matrix in Figure VII-l illustrates the general <br /> <br />LO <br /> <br />. <br />