Attached is the April 2014 seasonal forecast for two 50% hydrology conditions (meeting D1641 objectives and including Moderate OMR Restrictions) and one 90% hydrology condition (meeting modified D1641 objectives based on a temporary urgency change petition to the SWRCB). The attached excel file includes EC and Bromide at Banks, Jones Pumping stations, Old River at Bacon Island, and Old River at Highway 4, and a few locations along the California Aqueduct. This seasonal forecast of Aqueduct water quality is based on: 1) April 2014 DCO allocation study. 2) Initial EC conditions in Aqueduct established by the Delta and Aqueduct historical simulations up to the end of March 2014. 3) Bromide concentrations at Jones and Banks PP converted from modeled EC and bromide concentrations in Aqueduct modeled directly from this conversion. Both 50% and 90% hydrology studies used the following gate and temporary barriers operations: 1) Delta Cross Channel open on weekends from May 23 to June 15 and always open June 16 to December 1. 2) MR barrier is installed from March 17 to November 30. 3) OR barrier is installed from April 3 to November 30. 4) GLC barrier is installed from March 28 to November 30. 5) HOR Barrier is installed from April 8 to June 15. Pump-ins to the California Aqueduct were assumed to occur to the sum of 373 TAF from the start of April to the end of December. DSM2 version 8.0.6 was used for both the Delta and Aqueduct portions of the forecast. Net Delta Outflow Used for each Scenario (TAF) 90% (Salinity) 50% (Mod) 50% (D1641) Jan 321 321 321 Feb 599 599 599 Mar 802 802 802 Apr 201 398 398 May 256 297 297 Jun 238 243 243 Jul 196 277 273 Aug 194 283 279 Sep 188 269 265 Oct 191 257 257 Nov 207 293 293 Dec 308 289 289