the new maximum benefit paradigm
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The New Maximum Benefit Paradigm. Common Issues with Other Basins and Other RWQCBs. TDS, N and other water quality constituent objectives are common impediments to the use of recycled and imported waters Regional Boards must issue permits that implement their Basin Plans. - PowerPoint PPT PresentationTRANSCRIPT
The New Maximum The New Maximum Benefit ParadigmBenefit Paradigm
Common Issues with Common Issues with Other Basins and Other Other Basins and Other RWQCBsRWQCBs TDS, N and other water quality TDS, N and other water quality
constituent objectives are constituent objectives are common impediments to the use common impediments to the use of recycled and imported watersof recycled and imported waters
Regional Boards must issue Regional Boards must issue permits that implement their permits that implement their Basin PlansBasin Plans
The unused concept The unused concept from Executive Order from Executive Order 68-1668-16““1. Whenever the existing quality of water is 1. Whenever the existing quality of water is
better than the quality established in policies better than the quality established in policies as of the date on which such policies become as of the date on which such policies become effective, such existing high quality will be effective, such existing high quality will be maintained maintained until it has been until it has been demonstrated to the State that any 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 benefit to the people of the State, will not unreasonably affect present and not unreasonably affect present and anticipated beneficial use of such water anticipated beneficial use of such water and will not result in water quality less and will not result in water quality less than that prescribed in the policiesthan that prescribed in the policies.”.”
WC Section 13241WC Section 13241
“ “Each regional board shall establish such water quality objectives in Each regional board shall establish such water quality objectives in water quality control plans as in its judgment will ensure the reasonable water quality control plans as in its judgment will ensure the reasonable protection of beneficial uses and the prevention of nuisance; protection of beneficial uses and the prevention of nuisance; however, however, it is recognized that it may be possible for the quality of water to it is recognized that it may be possible for the quality of water to be changed to some degree without unreasonably affecting be changed to some degree without unreasonably affecting beneficial uses.beneficial uses. Factors to be considered by a Regional Board in Factors to be considered by a Regional Board in establishing water quality objectives shall include, but not necessarily establishing water quality objectives shall include, but not necessarily be limited to, all of the following:be limited to, all of the following:– (a) Past, present, and probable future beneficial uses of water.(a) Past, present, and probable future beneficial uses of water.– (b) Environmental characteristics of the hydrographic unit under (b) Environmental characteristics of the hydrographic unit under
consideration, including the quality of water available thereto.consideration, including the quality of water available thereto.– (c) Water quality conditions that could reasonably be achieved (c) Water quality conditions that could reasonably be achieved
through the coordinated control of all factors which affect waterthrough the coordinated control of all factors which affect water quality in the area.quality in the area.
– (d) Economic considerations.(d) Economic considerations.– (e) The need for developing housing within the region.(e) The need for developing housing within the region.– (f) The need to develop and use recycled water.”(f) The need to develop and use recycled water.”
Watermaster’s November Watermaster’s November 2002 Proposal2002 Proposal
Divide Chino Basin into three management Divide Chino Basin into three management zones – zones – Chino North, Chino EastChino North, Chino East and and Chino Chino SouthSouth
Based on WC Section 13241, set TDS and Based on WC Section 13241, set TDS and N objectives in Chino North toN objectives in Chino North to– maximize beneficial use of all water maximize beneficial use of all water
available to the basin including recycled available to the basin including recycled waterwater
– allow the recharge of state project water allow the recharge of state project water without mitigationwithout mitigation
What are the Causes of TDS What are the Causes of TDS and N Degradation in the Chino and N Degradation in the Chino Basin?Basin?
Returns from use from agriculture Returns from use from agriculture and urban water usesand urban water uses
Planned artificial rechargePlanned artificial recharge Same processes are occurring in Same processes are occurring in
almost all groundwater basinsalmost all groundwater basins
Figure 3Comparison of TDS Concentration Time Histories for
for the Chino North Management Zone
300
320
340
360
380
400
420
440
460
480
500
2000 2010 2020 2030 2040 2050 2060 2070 2080 2090 2100
TD
S C
on
cen
trat
ion
(m
g/L
)
Projection Based on Antidegradation
Objectives
Projection Based on OBMP
Watermaster and IEUA Watermaster and IEUA Commitments to Backup Commitments to Backup Maximum Benefit Based Maximum Benefit Based ObjectivesObjectives Recycled Water Management:Recycled Water Management:
– 12-month TDS and N effluent 12-month TDS and N effluent limitations of 550 mg/L and 8 mg/L limitations of 550 mg/L and 8 mg/L
– Commitment to serve the lowest Commitment to serve the lowest TDS supply available for potable TDS supply available for potable usesuses
– Minimize TDS waste incrementMinimize TDS waste increment
Basin Plan Requirements Basin Plan Requirements for Maximum Benefit Based for Maximum Benefit Based ObjectivesObjectives Future Chino Basin DesaltersFuture Chino Basin Desalters
– Started planning process for new Started planning process for new OBMP desalters in 2003 and have OBMP desalters in 2003 and have plan adopted and approved by Court plan adopted and approved by Court in 2007in 2007
– Other desalters will be added as Other desalters will be added as necessary as ambient TDS necessary as ambient TDS approaches the TDS objectiveapproaches the TDS objective
Basin Plan Requirements Basin Plan Requirements for Maximum Benefit Based for Maximum Benefit Based ObjectivesObjectives Basin-wide groundwater monitoring Basin-wide groundwater monitoring
for groundwater levels, TDS and for groundwater levels, TDS and nitrogen to assess ambient qualitynitrogen to assess ambient quality
Surface water discharge and quality Surface water discharge and quality monitoring to determine if monitoring to determine if Chino Chino NorthNorth groundwater is discharging groundwater is discharging into the Santa Ana Riverinto the Santa Ana River
Status of Basin Plan Status of Basin Plan AmendmentAmendment
Approved by:Approved by: RWQCB – January 2004RWQCB – January 2004 SWRCB – September 2004SWRCB – September 2004 OAL – December 2004OAL – December 2004
No negative comments through No negative comments through adoption processadoption process
Successful Successful Applications Outside Applications Outside the Chino Basinthe Chino Basin Cucamonga Management Zone – Cucamonga Management Zone –
Cucamonga Valley Water DistrictCucamonga Valley Water District Beaumont Management Zone – Beaumont Management Zone – San San
Timoteo Watershed Management Timoteo Watershed Management AuthorityAuthority
Yucaipa Management Zone – Yucaipa Management Zone – Yucaipa Valley Water DistrictYucaipa Valley Water District
San Timoteo Management Zone – San Timoteo Management Zone – STWMA & YVWDSTWMA & YVWD
What Did We Gain by What Did We Gain by Changing the WQ Changing the WQ Objectives?Objectives? Greater flexibility in water Greater flexibility in water
managementmanagement Maximized the use of recycled Maximized the use of recycled
waterwater Postponed construction of Postponed construction of
desalting facilities until they are desalting facilities until they are needed to protect beneficial usesneeded to protect beneficial uses
Minimized demand for State Minimized demand for State Project waterProject water
What Obligations Were What Obligations Were Incurred by Changing the Incurred by Changing the WQ Objectives?WQ Objectives? An increase in monitoringAn increase in monitoring Commitments are codified in the Commitments are codified in the
Basin PlanBasin Plan Retroactive mitigation if Retroactive mitigation if
commitments are not metcommitments are not met
Questions?Questions?