WSP11096 - Laserfiche WebLink

Home Browse Search

. (.oJ en w ~ . . USBR/MWD SALINITY MANAGEMENT STUDY FINAL REPORT SECTION 4 PROPOSED POLICY MANAGEMENT OF SALINITY BY THE METROPOLITAN DISTRICT OF SOUTHERN CALIFORNIA As regional leader in the management of Southern Californias water resources, in recognition of the broad and pervasive impacts total dissolved solids (TDS) have upon the use and management of those resources, and in concert with its stated mission "... to provide its service area with adequate and reliable supplies of high quality water to meet present and future needs... ", Metropolitan should adopt the following salinity management policy through 2004 or until a significant change in controlling conditions occurs: o Make all reasonable efforts to protect Metropolitans imported source supplies from the impacts of additional salinity, and where feasible seek to reduce the salinity received from those sources, taking into account the impacts of armually varying hydrologic conditions on salinity concentrations in the source supply systems. o Manage Metropolitan's system to best utilize available supplies such that the impacts of salinity upon end users is minimized to the extent possible, with a reasonable and practical goal to maintain a total dissolved solids concentration in the blended areas of " the system in the target range of 500 to 550 mgIL during designated times of the year. o Pursue a CALFED solution and storage and exchange arrangements along the Colorado River Aqueduct to minimize the loss of Colorado River Water periodically curtailed and replaced by State Project water to meet salinity targets. o Integrate water quality and quantity objectives in plarming and negotiating facility and resource developments. o Encourage local plarming and management practices to recognize that natural events beyond Metropolitans control will periodically increase the salinity of imported water supplies, hindering Metropolitans ability to continuously meet the 500 to 550 mgIL goal. o Encourage and support to a reasonable degree, consistent with other elements of this policy, other regional and local efforts to minimize the impacts of salinity on the groundwater and recycled water resources which have been or will be developed in Southern California. o Make the Salinity Management Action Plan (see Section 5) the primary vehicle to carry out this policy. Direct the General Manager to fully implement the Action Plan. Periodically assess the Action Plan, and make revisions based upon experience gained and changing conditions. BOOKMAN-EDMONSTON ENGINEERING, INC. 4-1 O:\LOCALRESIANDYSlSALlNITYlJUNE98-2\8SECT4.DOC Last printed 07/20/98 11:05 AM -<< _~.ii.&.~,~