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February 16, 2022
City of Rialto Principles of Agreement for External Recycled Water Supplies To meet Chino Basin water quality objectives and wastewater permit compliance requirements, IEUA needs to augment its recycled water system when the demands are higher than the available supplies during the months between May and October to provide a constant monthly supply to a proposed advanced water purification facility (AWPF) locatedat Regional Plant No.
4. The City of Rialto is interested in monetizing its recycled water to achieve ecosystem benefits and financial security and is amenable to engage in a partnership with IEUA to develop terms for their recycled water supplies. The removal of flows from the Santa Ana River generated from the City's treatment plant will reduce adverse impact to native species and a portion of these flows would serve as the AWPF supply.
The principles of agreement was drafted to consolidate the needs of both IEUA and the City.
The proposed terms include the design and construction of recycled water facilities, the diversion of 3,500 acre-feet per year (afy) between May and October into the IEUA recycled water system at a rate of $275 per acre foot for a period of 50 years, and the first right of purchase for any amount above the 3,500 afy or the remaining six months.
Approve the City of Rialto Principles of Agreement for the development of a final agreement that allows IEUA to purchase recycled water supplies.There is no impact to budget with this action.
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02/09/22Engineering, Operations & Water Resources
Christiana Daisy, Deputy General Manager
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Business Goal:
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The IEUA - City of Rialto Principles of Agreement supports IEUA's business goal of Water Reliability, of implementing an integrated water resources management plan providing a reliable and cost-effective water supply and promoting sustainable water use throughout the region.
None
Attachment 1 - Presentation
Attachment 2 - Principles of Agreement
Not Applicable
22018
City of Rialto
Water Resources Partnership
Principles of Agreement
Elizabeth Hurst
Chino Basin Program Manager
February 16, 2022
• The Santa Ana River Multi Species Habitat
Conservation Plan (SAR HCP) identified the benefit of
removing flows from the City of Rialto wastewater
treatment plant during the summer months due to the
adverse impact to native species.
• City of Rialto is interested in monetizing its recycled water as an annual revenue source.
• Due to seasonality of recycled water supplies, IEUA
needs to augment its recycled water supply during peak
demand months between May and October.
• IEUA and City of Rialto initiated water resources
partnership discussions in 2019.
2 Background
3 Recycled Water Supplies vs Demands
0 1000
2000
3000
4000
5000
6000
Jan-20 Feb-20 Mar-20 Apr-20 May-20 Jun-20 Jul-20 Aug-20 Sep-20 Oct-20 Nov -20 Dec-20 Acre-Feet per Month
IEUA RW Supply
IEUA Recycled Water Supply:
56,800 AFY
4 0
1000
2000
3000
4000
5000
6000
Jan-20 Feb-20 Mar-20 Apr-20 May-20 Jun-20 Jul-20 Aug-20 Sep-20 Oct-20 Nov -20 Dec-20 Acre-Feet per Month
Direct Use IEUA RW Supply
Direct Use:
18,000 AFY
Recycled Water Supplies vs Demands
IEUA Recycled Water Supply:
56,800 AFY
5 0
1000
2000
3000
4000
5000
6000
Jan-20 Feb-20 Mar-20 Apr-20 May-20 Jun-20 Jul-20 Aug-20 Sep-20 Oct-20 Nov -20 Dec-20 Acre-Feet per Month
Direct Use GWR IEUA RW Supply
Groundwater Recharge:
16,000 AFY
Recycled Water Supplies vs Demands
Direct Use:
18,000 AFY
IEUA Recycled Water Supply:
56,800 AFY
6 0
1000
2000
3000
4000
5000
6000
Jan-20 Feb-20 Mar-20 Apr-20 May-20 Jun-20 Jul-20 Aug-20 Sep-20 Oct-20 Nov -20 Dec-20 Acre-Feet per Month
Direct Use GWR Discharge+ IEUA RW Supply
Discharge:
22,800 AFY
Recycled Water Supplies vs Demands
Direct Use:
18,000 AFY
IEUA Recycled Water Supply:
56,800 AFY
Groundwater Recharge:
16,000 AFY
7 AWPF:
17,000 AFY
0 1000
2000
3000
4000
5000
6000
Jan-20 Feb-20 Mar-20 Apr-20 May-20 Jun-20 Jul-20 Aug-20 Sep-20 Oct-20 Nov -20 Dec-20 Acre-Feet per Month
Direct Use GWR AWPF Supply Discharge IEUA RW Supply
Recycled Water Supplies vs Demands
Groundwater Recharge:
16,000 AFY
Direct Use:
18,000 AFY
IEUA Recycled Water Supply:
56,800 AFY
Discharge:
8 AWPF:
17,000 AFY
0 1000
2000
3000
4000
5000
6000
Jan-20 Feb-20 Mar-20 Apr-20 May-20 Jun-20 Jul-20 Aug-20 Sep-20 Oct-20 Nov -20 Dec-20 Acre-Feet per Month
Direct Use GWR AWPF Supply Discharge IEUA RW Supply
Recycled Water Supplies vs Demands
Groundwater Recharge:
16,000 AFY
Direct Use:
18,000 AFY
IEUA Recycled Water Supply:
56,800 AFY
Discharge:
22,800 11,800 AFY
9 External Recycled Water Supplies:
6,000 AFY
0 1000
2000
3000
4000
5000
6000
Jan-20 Feb-20 Mar-20 Apr-20 May-20 Jun-20 Jul-20 Aug-20 Sep-20 Oct-20 Nov -20 Dec-20 Acre-Feet per Month
Direct Use GWR AWPF Supply Discharge IEUA RW Supply External RW Supplies Recycled Water Supplies vs Demands
AWPF:
17,000 AFY
Groundwater Recharge:
16,000 AFY
Discharge:
11,800 AFY
Direct Use:
18,000 AFY
IEUA Recycled Water Supply:
56,800 AFY
• IEUA to design, construct, and operate recycled water facilities with 7,000-acre-foot capacity (i.e., pipeline, pump station, interconnection).
• IEUA to have exclusive rights to divert 3,500 acre-feet of Rialto’s recycled water into IEUA system.
• IEUA to purchase this amount at a rate of $275 per acre-feet annually between May and October for a period of 50 years. The annual rate to be adjusted at 2 percent or the CPI index, whichever is higher.
• IEUA and its agencies have first right of purchase for the remaining six months or future expanded flows over the facilities’ capacity at a rate of $375-$400 per acre-feet. 10 Principles of Agreement
Approve the City of Rialto Principles of Agreement for the development of a final agreement that allows IEUA to purchase recycled water supplies.
11 Recommendation
The Chino Basin Program supports IEUA's business goal of Water Reliability by implementing an integrated water resources management plan that provides the region with reliable and cost-effective water supply and promotes sustainable water use. January 27, 2022 – Regional Technical Committee presentation February 3, 2022 – Regional Policy Committee presentation • February 9, 2022 – IEUA Engineering, Operations & Water Resources Committee action for approval of the final Principles of Agreement
• February 16, 2022 – IEUA Board of Directors action for approval of the final Principles of Agreement
• February 22, 2022 – Rialto City Council action for approval of the final Principles of Agreement
12 Schedule
The City of Rialto Principles of Agreement supports IEUA's business goal of Water Reliability by implementing an integrated water resources management plan that provides the region with reliable and cost-effective water supply and promotes sustainable water use.