SITE INFORMATION AND CORRESPONDENCE_1993-2003

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WASTE DISCHARGE REQUIRMENTS ORDER NO. R5-2002-0213 • 5 U.S. DEPARTMENT OF DEFENSE DEFENSE LOGISTICS AGENCY DEFENSE DISTRIBUTION DEPOT SAN JOAQUIN SHARPE GROUNDWATER REMEDIATION SYSTEM SAN JOAQUIN COUNTY objectives for industrial use. No effluent limitations in this Order are associated with protection of this beneficial use. Future updates of this Order will continue to reconsider the existing or potential use of the SSJID Canal as a source of industrial supply water. 4) Water Contact and Non-Contact Recreation and Esthetic Enjoyment The SSJID Canal flows through residential areas, and there is ready public access to the SSJID Canal. Exclusion of the public is unrealistic and contact and non-contact recreational activities likely exist along the SSJID Canal. These uses are likely to increase as the population in the area grows. Section 101(a)(2) of the federal Clean Water Act(CWA) requires that water quality that for the protection and propagation of fish, shellfish, and wildlife, and for recreation in and on the water be achieved, whenever attainable. The interim national goal for all waters is to be `fishable/swimmable'. This Order considers water contact and non-contact recreation as existing beneficial uses of the SSJID Canal; however, no effluent limitations in this Order are associated with protection of this beneficial use. 4 5) Preservation and Enhancement offish, Wildlife and Other Aquatic Resources. SSJID Canal flows to French Camp Slough, which flows to the Delta. Fish species present in French Camp Slough and the Delta are consistent with both cold and warm water fisheries. The SSJID Canal is at times in continuity with French Camp Slough, which flows to the Delta. Along the lower reaches of the SSJID Canal there are no barriers to aquatic organism movement or migration. However, the SSJID Canal was not constructed as a migration pathway or spawning area for cold water species. As noted previously, Section 101(a)(2) of the CWA requires that water quality that for the protection and propagation of fish, shellfish, and wildlife, and for recreation in and on the water be achieved,whenever attainable. The interim national goal for all waters is to be `fishable/swimmable'. This Order considers aquatic habitat as an existing beneficial use of the SSJID Canal. The aquatic habitat designation necessitates that the in-stream dissolved oxygen concentration be maintained at, or above, 5.0 mg/L(ppm). This approach recognizes that, if the naturally occurring in-stream dissolved oxygen concentration is below 5.0 mg/L(ppm), the Discharger is not required to improve the naturally occurring level. Previous Order No. 95-258 identified French Camp Slough as the point of compliance for receiving water limitations (Receiving Water Limitation D.). However, the existing beneficial uses of the SSJID Canal, as described above, must also be protected and maintained. The SSJID Canal is at times in continuity with French Camp Slough, which flows to the Delta. This Order considers limitations necessary for the protection of existing beneficial uses in the SSJID Canal.