OCWD Management Area
The undesirable result of “significant and unreasonable seawater intrusion” is not present and is not anticipated to occur in the future in the OCWD Management Area due to OCWD’s management programs.
1.6.5 Sustainable Management: Land Subsidence
Management of the groundwater basin by maintaining storage levels within the established operating range has prevented the undesirable result of significant and unreasonable land subsidence that substantially interferes with surface uses. Within the OCWD Management Area ground surface movements rise and fall as basin storage levels rise and fall. There is no evidence of long-term inelastic land subsidence, nor any land subsidence that has interfered with surface uses. Therefore, the undesirable result of “significant and unreasonable land subsidence that substantially interferes with surface uses” is not present and is not anticipated to occur in the OCWD Management Area in the future due to OCWD’s management programs .
1.6.6 Sustainable Management: Depletion of Interconnected Surface Waters
There are no surface water bodies within the OCWD Management Area that are interconnected with groundwater in which the groundwater connection to the surface water provides surface water flow to sustain beneficial uses in a surface water body. Therefore, the undesirable result of “depletions of interconnected surface water that have significant and unreasonable adverse impacts on beneficial uses of the surface water due to groundwater conditions occurring throughout the ba sin” is not present and is not anticipated to occur in the OCWD Management Area due to OCWD’s management programs .
1.7 PROTOCOLS FOR MODIFYING MONITORING PROGRAMS
Protocols that trigger a change in a monitoring program include a change in regulations, a first- time detection of a constituent in a water sample, an increase in a constituent in a water sample that approaches or exceeds a regulatory limit or MCL, an indication of an adverse water quality trend or water level, a special study, or a recommendation from OCWD’s Independent Expert Panel.
1.8 EVALUATION OF POTENTIAL PROJECTS
OCWD regularly evaluates potential projects and conducts studies to improve existing operations. This may include:
• Increasing the capacity of existing recharge basins • Constructing new recharge facilities • Constructing new production wells • Improving seawater intrusion barriers
BASIN 8-1 ALTERNATIVE 2022 UPDATE
Executive Summary 1-13
Appendix F - 79
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