Responses to DWR Comments on Alternative Plan
This section provides comments to DWR’s Alternative Assessment Staff report, dated July 17, 2019. In addition, responses are provided for the four suggested recommended actions listed in the staff report (Section IV, B).
OCWD Comments on DWR Alternative Assessment Staff Report, July 17, 2019.
Page 7, Part IV, D, Basin coverage. DWR is correct in that the three agencies that collaborated in preparing the Alternative do not cover the entire basin; however, all other agencies with jurisdiction, such as the County of Orange, City of Corona, City of Yorba Linda, City of Anaheim and others were notified and offered the opportunity to be involved. No comments were received from any of the contacted agencies. It is our opinion, that through this process, OCWD, La Habra and IRWD did achieve complete coverage of Basin 8-1. Page 14, Part V, B.2, Groundwater Conditions DWR staff mentioned that monitoring data showing that there are no depletions of interconnected surface water that will cause significant and unreasonable impacts on beneficial users of surface water is not provided, per Page 9 of the Alternative. Page 9 of the Alternative is part of the Overview of the entire report and does not contain detailed information Detailed monitoring information, including 10 years of water level data (Page 364), water budget information, etc. is presented in the Santa Ana Canyon Management Area section of the Alternative. The information presented in the Santa Ana Canyon Management Area section of the report supports the conclusion that there are no depletions of interconnected surface water that will cause significant and unreasonable impacts on beneficial users of surface water. Additional information has been provided below in response to Recommendation No. 1. Page 16,. Part V, B.4, Management Areas. At the time the 2017 Alternative was submitted, the City of La Habra Groundwater Sustainability Agency (GSA) was contemplating preparing a GSP to be submitted in 2020. However, the City of La Habra GSA has elected to continue contributing to the Basin 8-1 Alternative.
Response to DWR’s Recommended Actions.
Pages 32-33, Part IV, B, Recommended Actions.
DWR Recommended Action 1 . Staff recommend the Agencies clarify the basis for the determination that depletions of interconnected surface water in the Santa Ana Canyon Management Area are de minimis, while considering the volume of pumping, the extent of the interconnection between groundwater and surface water, and the beneficial users of the surface water. Staff recommend clarifying whether surface water bodies in the La Habra-Brea Management Area are interconnected with groundwater and whether groundwater- dependent ecosystems exist within the Santa Ana Canyon and La Habra Management Areas.
OCWD Response:
Appendix F - 278
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