Chino Basin

Improving Water Supply Reliability

Presented by

Ken Manning, CEO

Chino Basin Watermaster

OutlineOutline

Chino 101Chino 101 The Almost 2004 Basin PlanThe Almost 2004 Basin Plan The New Maximum Benefit The New Maximum Benefit

ParadigmParadigm

Some Chino Basin Some Chino Basin StatsStats About 220 square miles in areaAbout 220 square miles in area Contains about 6 million acre-ftContains about 6 million acre-ft PumpersPumpers

– 24 appropriators (cities, districts, etc)24 appropriators (cities, districts, etc)– ~300 overliers (mostly ag)~300 overliers (mostly ag)

Current pumping is about 180,000 Current pumping is about 180,000 acre-ft/yracre-ft/yr

Some Chino Basin Some Chino Basin StatsStats Basin was adjudicated in 1978Basin was adjudicated in 1978 Watermaster is interest-basedWatermaster is interest-based

– Nine-member boardNine-member board– Pumper committeesPumper committees

Safe yield is managed at 140,000 Safe yield is managed at 140,000 acre-ft/yracre-ft/yr

The Almost 2004 Basin The Almost 2004 Basin PlanPlan

Regulatory Environment in Late Regulatory Environment in Late 20022002

New Objectives were proposed New Objectives were proposed based on SWRCB Executive Order based on SWRCB Executive Order 68-16 (non degradation 68-16 (non degradation objectives) ~ ambient quality in objectives) ~ ambient quality in 1973.1973.

The operating concept The operating concept from Executive Order 68-from Executive Order 68-1616““1. 1. Whenever the existing quality of water Whenever the existing quality of water

is better than the quality established in is better than the quality established in policies as of the date on which such policies as of the date on which such policies become effective, such existing policies become effective, such existing high quality will be maintainedhigh quality will be maintained until it until it has been demonstrated to the State that any has been demonstrated to the State that any change will be consistent with maximum change will be consistent with maximum benefit to the people of the State, will not benefit to the people of the State, will not unreasonably affect present and anticipated unreasonably affect present and anticipated beneficial use of such water and will not beneficial use of such water and will not result in water quality less than that result in water quality less than that prescribed in the policies.”prescribed in the policies.”

Regulatory Environment in Late Regulatory Environment in Late 20022002

Regional Board was planning to Regional Board was planning to amend the Basin Plan to amend the Basin Plan to incorporate the new non incorporate the new non degradation-based degradation-based TDSTDS and and nitrogennitrogen objectives. objectives.

Regulatory Environment in Late Regulatory Environment in Late 20022002

There would be no assimilative There would be no assimilative capacitycapacity

RWQCB would require mitigation for RWQCB would require mitigation for imported water recharge if TDS in imported water recharge if TDS in imported water exceeds the objectiveimported water exceeds the objective

Recycled water would have to be Recycled water would have to be desalted prior to rechargedesalted prior to recharge

Optimum Basin Optimum Basin Management Program Management Program (OBMP)(OBMP) Court Ordered – February 1998Court Ordered – February 1998 OBMP was completed in August OBMP was completed in August

19991999 ““Peace” Agreement that Peace” Agreement that

implements the OBMP – July 2000implements the OBMP – July 2000 OBMP Program EIR – July 2000OBMP Program EIR – July 2000 Court Approval of OBMP and Peace Court Approval of OBMP and Peace

Agreement – September 2000Agreement – September 2000

Optimum Basin Optimum Basin Management Program Management Program (OBMP)(OBMP) The OBMP in unprecedented in scopeThe OBMP in unprecedented in scope Currently in the eigth year of Currently in the eigth year of

implementationimplementation Various parties to the Peace Agreement are Various parties to the Peace Agreement are

implementing the OBMPimplementing the OBMP Present Value Cost of OBMPPresent Value Cost of OBMP

– Year 2000 – over $400 millionYear 2000 – over $400 million– Year 2008 – TBD but substantially >$400 millionYear 2008 – TBD but substantially >$400 million

Peace II Court Approved December 07Peace II Court Approved December 07