638 Fermentation and Biochemical Engineering Handbook Title Il Air Toxics Acid rain Title I Title v Title VII Nonattainment pErmit Program Enforcement Existing SIP Permit Program Program Figure 1. The relationship of the Title V program to other CAA titles 2.2 Water In 1972 Congress enacted the Federal Water Pollution Control Act known as the clean water Act (CWA). In 1977 further amendments were enacted which strengthened the provisions of the Clean Water Act. Further refinements were enacted by Congress with the Water Quality Act Amend ments of 1987. The purpose of the CWa was to restore and maintain the chemical, physical, and biological integrity of our countrys waters. It set up specific effluent guidelines for SIC industry categories and BOD and suspended solids continued to serve as the primary parameters. The National Pollutant Discharge Elimination System(NPDES)was set up and authorized EPa to establish and enforce effluent limitations on waste water discharges Designated priority pollutants were introduced with a permit program and aquatic toxicity also became a permit requirement. Volatile Organic Compounds (voC) emissions from waste water treatment plants were severely restricted and control of nutrients such as nitrogen and phosphorous The Clean water Actestablished standards that area-wide waste water treatment plants be developed and implemented to assume adequate control638 Fermentation and Biochemical Engineering Handbook Air Toxics Acid Rain i-xq Permit Program - Program I Figure 1. The relationship of the Title V program to other CAA titles. 2.2 Water In 1972 Congress enacted the Federal Water Pollution Control Act known as the Clean Water Act (CWA). In 1977 further amendments were enacted which strengthened the provisions of the Clean Water Act. Further refinements were enacted by Congress with the Water Quality Act Amend￾ments of 1987. The purpose of the CWA was to restore and maintain the chemical, physical, and biological integrity ofour country's waters. It set up specific effluent guidelines for SIC industry categories and BOD and suspended solids continued to serve as the primary parameters. The National Pollutant Discharge Elimination System (NPDES) was set up and authorized EPA to establish and enforce effluent limitations on waste water discharges. Designated priority pollutants were introduced with a permit program and aquatic toxicity also became a permit requirement. Volatile Organic Compounds (VOC) emissions from waste water treatment plants were severely restricted and control of nutrients such as nitrogen and phosphorous were required. The Clean Water Act established standards that area-wide waste water treatment plants be developed and implemented to assume adequate control