UWM Plan - Municipal Water District of Orange County

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Section 2 Water Demand Table 2-7: Calculation of Regional Urban Water Use Targets for Orange County 20x2020 Regional Alliance Orange County 20x2020 Regional Alliance (1) 2010 Population (2) 2015 Target (GPCD) (1) x (2) = (3) Weighted Total 2015 (4) 2020 Target (GPCD) (1 )x (4) = (5) Weighted Total 2020 Brea 40,368 247 9,972,833 220 8,864,740 Buena Park 84,141 180 15,145,380 158 13,462,560 East Orange CWD RZ 3,656 296 1,081,493 263 961,327 El Toro WD 52,019 181 9,414,193 161 8,368,172 Fountain Valley 59,227 156 9,216,257 142 8,383,582 Garden Grove 177,020 152 26,903,684 142 25,057,181 Golden State WC 169,944 156 26,521,400 142 24,055,573 Huntington Beach 204,831 148 30,388,941 137 28,136,871 Irvine Ranch WD 337,876 190 64,426,278 170 57,651,782 La Habra 63,118 150 9,495,180 142 8,934,353 La Palma 15,544 146 2,273,660 136 2,111,174 Laguna Beach CWD 21,718 180 3,930,958 160 3,496,598 Mesa Consolidated WD 111,166 161 17,905,542 143 15,916,038 Moulton Niguel WD 172,068 193 33,263,142 172 29,567,237 Newport Beach 67,030 228 15,292,411 203 13,593,254 Orange 141,107 201 28,409,066 179 25,252,503 San Clemente 55,398 167 9,250,401 148 8,222,579 San Juan Capistrano 40,262 199 8,008,531 177 7,118,694 Santa Margarita WD 155,229 189 29,371,222 168 26,107,753 Seal Beach 25,561 146 3,721,700 140 3,565,368 Serrano WD 6,651 421 2,786,769 374 2,480,823 South Coast WD 38,641 168 6,481,118 149 5,760,994 Trabuco Canyon WD 14,907 220 3,284,689 181 2,696,823 Tustin 69,010 171 11,772,844 152 10,464,750 Westminster 95,793 134 12,834,750 126 12,065,039 Yorba Linda WD 77,320 258 19,911,769 229 17,699,351 Anaheim 361,043 181 65,503,883 161 58,225,674 Fullerton 138,600 200 27,704,878 178 24,626,558 Santa Ana 358,136 119 42,457,305 109 39,015,239 Regional Alliance Total 3,139,017 174 547,162,676 157 491,862,589 Table 2-8 provides the regional urban water use targets for the Orange County 20x2020 Regional Alliance. Table 2-8: Urban Water Use Targets for Orange County 20x2020 Regional Alliance 2015 Target 2020 Target Orange County 20x2020 Regional Alliance 174 157 Municipal Water District of Orange County 2010 Regional Urban Water Management Plan Final 2-11
Section 2 Water Demand These targets are subject to revisions, as retail water suppliers have an option to update their target in their 2015 UWMPs. Additionally, the population weightings used to calculate these targets will be revised in 2015 and 2020 based on the most recent compliance-year population data. Deducting Recycled Water Used for Indirect Potable Reuse SBx7-7 allows urban retail water suppliers to calculate a deduction for recycled water entering their distribution system indirectly through a groundwater source. Individual water suppliers within the OCWD Groundwater Basin have the option of choosing this deduction to account for the recharge of recycled water into the basin by OCWD historically through Water Factory 21, and more recently by GWRS. These deductions also benefit all members of the Orange County 20x2020 Regional Alliance. MWDOC has provided the documentation for the calculations of this deduction to assist retail water suppliers if they choose to include recycled water for indirect potable reuse in their individual targets. This calculation is applied as a deduction from the water supplier’s calculation of Gross Water Use 3 . Table 2-9 provides the calculation deducting recycled water for indirect potable reuse for OCWD Basin Agencies. Because year-to-year variations can occur in the amount of recycled water applied in a groundwater recharge operations, a previous five year average of recharge is used, as found in column (1). To account for losses during recharge and 4 recovery, a factor of 96.5% was used in column (2) . After accounting for these losses, the estimated volume of recycled water entering the distribution system is calculated in column (3). In column (4), the annual deduction for recycled water for indirect potable reuse is expressed as a percentage of the total volume of water extracted from the basin in that year. This is the annual percentage of total OCWD basin production that is eligible for a deduction. For individual water suppliers in the OCWD Basin, the annual deduction is calculated as their basin pumping in a given year multiplied by the value in column (5). For example, if Agency A pumped 10,000 acre-feet of water from the OCWD Basin in Fiscal Year 2004/05, then 1.47% of that total production would be deducted from the agency’s calculation of Gross Water Use for that year as found in column (5). This equates to a deduction of 147 acre-feet (AF). 3 The calculation is described in Step 8 of Methodology 1 from the Technical Methodologies. 4 Figure based on in-basin losses to other groundwater basins, which averages 10,000 AF per year or 3.5% of average basin yield. The estimated FY 2090/10 basin losses of 9,315 acre-feet can be found in the Fiscal Year 2009/10 Conjunctive Use Program (CUP) Account Activity and Losses. Losses associated with treatment and recharge operations are negligible. Municipal Water District of Orange County 2010 Regional Urban Water Management Plan Final 2-12
Page 1 and 2: Municipal Water District of Orange
Page 3 and 4: Table of Contents Contents Executiv
Page 5 and 6: Table of Contents 6. Recycled Water
Page 7 and 8: Table of Contents List of Figures F
Page 9 and 10: Acronyms GAC GAP GMFP GPCD gpm GRF
Page 11 and 12: Message from the Board of Directors
Page 13 and 14: Executive Summary • Offer opportu
Page 15 and 16: Executive Summary When comparing su
Page 17 and 18: Executive Summary • Promoting par
Page 19 and 20: 1. Introduction 1.1. Urban Water Ma
Page 21 and 22: Section 1 Introduction • Long-ran
Page 23 and 24: Section 1 Introduction term by vote
Page 25 and 26: Section 1 Introduction For more tha
Page 27 and 28: Section 1 Introduction Orange Count
Page 29 and 30: Section 2 Water Demand 600,000 2.5
Page 31 and 32: Section 2 Water Demand Table 2-1: C
Page 33 and 34: Section 2 Water Demand used to fill
Page 35 and 36: Section 2 Water Demand Baseline and
Page 37: Section 2 Water Demand o 10 percent
Page 41 and 42: Section 2 Water Demand under SBx7-7
Page 43 and 44: Section 2 Water Demand Legislation
Page 45 and 46: 3. Water Sources and Supply Reliabi
Page 47 and 48: Section 3 Water Sources and Supply
Page 55 and 56: 3.2.3. State Water Project (SWP) Se
Page 57 and 58: State Water Project Programs and Lo
Page 71 and 72: 3.3.2. San Juan Basin Section 3 Wat
Page 79 and 80: 3.3.8. Recharge Facilities for OCWD
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4. Demand Management Measures 4.1.
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4.2. BMP Implementation in MWDOC Se
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Section 4 Demand Management Measure
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4.2.4. DMM 4: Metering with Commodi
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Section 5 Water Supplies Contingenc
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6. Recycled Water 6.1. Agency Coord
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Section 6 Recycled Water outfalls a
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Section 6 Recycled Water IRWD’s r
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Section 6 Recycled Water IRWD Los A
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Section 6 Recycled Water OCWD Groun
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6.4.2. Indirect Potable Reuse Secti
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7. Future Water Supply Projects and
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Section 7 Future Water Supply Proje
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Section 8 UWMP Adoption Process Thi
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Section 8 UWMP Adoption Process Cit
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Appendices A. Urban Water Managemen
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CALIFORNIA WATER CODE DIVISION 6 PA
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and county, city, regional agency,
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(4) A detailed description and anal
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dated December 10, 2008, as it may
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the agencies participating in the p
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service area at the end of 5, 10, 1
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10631, that achieve water savings s
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"Memorandum of Understanding Regard
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Demand “Bump” Factors for 2010
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Table 1. Per-Capita Retail Water Us
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Appendix C California Urban Water C
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Agency: Municipal Water District of
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Urban Water Management Plan checkli
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Calif. Water No. UWMP requirement a
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Municipal Water District of Orange
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List of Tables and Figures TABLES T
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Section 2: Metropolitan Water Distr
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Section 3: Development Process In p
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MWDOC’s allocation plan. Moreover
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Base Period Interim Agricultural Wa
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Shortage Levels: The model allocate
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to 2008; in order to incorporate th
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Section 5: Plan Implementation This
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agencies and Board Committee member
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Tracking and Reporting In preparing
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It important to note, MWDOC does no
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Appendix A List of Acronyms: AF- Ac
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Appendix C MWDOC Growth Adjustment
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Appendix F Letters of Notification
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Appendix H Resolution of Adoption o
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8001 Irvine Center Drive, Suite 110
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UWM Plan - Municipal Water District of Orange County

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