ARCHIVED REPORTS_DRAFT ENVIRONMENTAL IMPACT REPORT

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a. More than 1 Nepholometric Turbidity Unit(NTU)if background is between 0 and 5 NTUs. b. More than 20%where natural turbidity is between 5 and 50 NTUs. c. More than 10 NTUs where natural turbidity is between 50 and 100 NTUs. d. More than 10%where natural turbidity is greater than 100 NTUs. Limitation#7—pH.The discharge shall not cause the normal pH to fall below 6.5, exceed 8.5, or the 30-day average ambient change by more than 0.5 units. Limitation#8—Temperature.The discharge shall not cause the creation of a zone, defined by water temperatures of more than 1°F above natural receiving water temperature,which exceeds 25%of the cross- sectional area of the river at any point. Limitation#9—Temperature.The discharge shall not cause the receiving water temperature to increase more than 4°F above the ambient temperature of the receiving water at any time or place outside the zone of initial dilution. Limitation# 12—Aquatic communities.The discharge shall not cause aquatic communities and populations, including vertebrate, invertebrate, and plant species,to be degraded. Limitation# 13—Toxic pollutants. The discharge shall not cause toxic pollutants to be present in the water column, sediments, or biota in concentrations that adversely affect beneficial uses; that produce detrimental response in human,plant, animal, or aquatic life; or that bioaccumulate in aquatic resources at levels which are harmful to human health. San Joaquin River Agreement As discussed above,the WQCP for the Bay-Delta includes water quality and flow objectives for the San Joaquin River Basin. The flow objectives were a source of dispute because of the alleged lack of scientific information regarding the relationship of flow to salmon survival and because the San Joaquin River stakeholders were not represented in the negotiations that established the objectives(1994 Bay-Delta Accord). An association of water users on the San Joaquin River system filed suit against the SWRCB, challenging the flow objectives contained in the WQCP. In an effort to settle this issue out of court,the San Joaquin River interests collaborated with other water users, environmental,and governmental interests to identify feasible voluntary actions to protect the San Joaquin River's fish resources and implement the SWRCB's objectives. Initial meetings started in 1996 culminated in an agreement with the Delta water export interests,known as the Letter of Intent to Resolve San Joaquin River Issues. Fishery biologists from State and federal agencies and other stakeholders outlined a program of study to gather the best available scientific information on the impact of flows and State Water Project/Central Valley Project (SWP/CVP)export rates on the salmon smolts in the lower San Joaquin River. The result is a scientific adaptive fishery management plan commonly known as the Vernalis Adaptive Management Plan(VAMP) (see description below). The San Joaquin River stakeholders recognized the value of implementing VAMP and taking other actions to help implement the 1995 WQCP. This recognition led to the development of the San Joaquin River Agreement.A Statement of Support for the San Joaquin River Agreement was signed by most of the parties to the negotiations, committing them to the program once all environmental and regulatory procedures required by the National Environmental Policy Act(NEPA), CEQA, and SWRCB were complete. By February 1999,these requirements and a federal Record of Decision had been completed with the culmination of an EIS/EIR for Meeting Flow Objectives for the San Joaquin River Agreement, 1999-2010. The SWRCB adopted D-1641 on December 29, 1999, subsequently revised on March 15,2000,providing for implementation of the Agreement. EDAW Manteca WQCF and Collection System Master Plans EIR Fisheries and Aquatic Resources 4.13-14 City of Manteca