1999 AGN NOV 16 Misc Add 1 - Laserfiche WebLink

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HANDOUT FOR COLTON CITY COUNCIL Page 2 of 5 Principles of Agreement operable, but not in use due to high nitrates. Groundwater production in this alternative will be about 800 acre-ft/yr. The County Parks well alternative is shown in Figure 3. This well is used for evaporation make- up supply for lakes and for irrigation in Rancho Jurupa Park. In this alternative, the Riverside County Regional Park and Open -Space District (RCRPOSD) would simply pump an existing well into their lake system at Rancho Jurupa Park. Water would flow through a system of lakes and, eventually, to the Santa Ana River. Project C Colton Basin. Restoration and Water Supply Project Ultimate Project Description. This is a water supply project that will develop groundwater from a portion of the Colton and Riverside North basins that is located along the Santa Ana River, between the Bunker Hill Dike and the northern edge of La Loma Hills. This will be accomplished by removing groundwater whose quality is too poor for use in the WMWD service area and refilling the basin with better quality water. Future groundwater quality will be maintained by managing recharge. Only high quality recharge would be permitted. Well field(s) would be constructed to recover groundwater near the recharge area. Groundwater in this area has a TDS ranging from 450 to 650 mg/L, which makes it unusable for municipal users in the WMWD and SBVMWD service areas. In this project, about 15,000 to T 20,000 acre -ft of the high TDS groundwater will be pumped and conveyed from the Colton Basin during the first three years of the project. Production will run year round, as long as OCWD has recharge capacity. The Colton Basin will be refilled with high quality local run-off, state project water (SPW), surplus Bunker Hill Basin groundwater and San Bernardino ..h wastewater. Existing wells, owned by the city of Riverside and the successors to the 350 Miners -Inch Company, could be used to lower groundwater storage. The locations of these wells are shown in Figure 4. Tentatively, the groundwater production rate to lower storage is estimated to range from 9,000 gpm to 13,400 gpm. Water from these wells will be conveyed in the Riverside canal with some of the water used by local agriculture and the remainder discharged to the Santa Ana River, downstream of Mission Boulevard. Figure 5 shows the location of the Riverside canal and the point of discharge at Hole Lake. Table 2 lists the wells �:- that could be used in the ultimate Project C. Table 3 lists the monthly Project C groundwater _ production, concurrent agricultural deliveries to the Riverside canal, and the volume of water delivered to OCWD. Groundwater discharged to the river will pass through OCWD's nitrogen removal facilities and then be recharged in Orange County. Revised Principles, Version 3 - 3 - a-