MPWMD WATER SUPPLY PLANNING COMMITTEE MEETING--FEBRUARY 12, 2013--EXHIBIT 5A--PROPOSED WORK PLAN FOR PRELIMINARY DATA COMPILATION IN SUPPORT OF POTENTIAL AQUIFER STORAGE AND RECOVERY PROJECT IN THE TULARCITOS CREEK SUB-BASIN OF THE CARML RIVER WATERSHED

EXHIBIT 5-A

Monterey Peninsula Water Management District

Proposed Work Plan for

Preliminary Data Compilation in support of

Potential Aquifer Storage and Recovery Project in the

Tularcitos Creek Sub-basin of the Carmel River Watershed

January 2013

SUMMARY: In addition to the Aquifer Storage and Recovery (ASR) expansion opportunities that the Monterey Peninsula Water Management District (MPWMD or District) has been pursuing in the Seaside Groundwater Basin, interest has also been expressed through the MPWMD board's Water Supply Planning Committee to investigate possible use of ASR technology at other locations. In particular, development of an ASR project within the Carmel River Watershed in the Tularcitos Creek Sub-basin (Tularcitos Basin) has been identified as a potential supplemental water supply option for the MPWMD area. The MPWMD currently holds a water right issued by the State Water Resources Control Board (Permit 20808B) that could be the basis for the additional water rights that would be needed for potential future ASR expansion in the Tularcitos Basin. The project concept would be to divert Carmel River flows during high-flow winter periods to underground aquifer storage in an area of the Tularcitos Basin, for subsequent recovery and use during summer or extended dry periods. Recovery concepts include extraction and delivery directly to the Cal-Am distribution system and/or delivery via summertime surface flow releases providing streamflow enhancement.

The area of interest in the Tularcitos Basin is outside of the MPWMD boundaries and accordingly, there is little technical information currently available in MPWMD files. An initial effort is envisioned that would include review of existing data sources, compilation of existing well and streamflow records, creation of a database to support future investigations, and development of preliminary hydrogeologic maps and figures.

PROPOSED WORK PLAN: The proposed Work Plan (Plan) outlines the steps envisioned for a Consultant that will be retained to conduct this work. The Plan represents a preliminary data compilation effort that will include development of technical data in support of subsequent work that may result in a full feasibility analysis of this project concept. Data from existing reports and available records will be compiled to develop a reconnaissance-level understanding of this project. The results from this work will be summarized in a brief report (Report) that describes the data that were acquired and developed during this preliminary work phase. Assuming the results from this phase of work are favorable, potential future work phases would include more detailed and specific ASR project concepts, coordination with property owners and resource management agencies, and site-specific pilot investigations.

The Plan outline shown below will be used as the basis for a formal Scope Of Work to be prepared by the Consultant to be retained for this work, and will include the following tasks:

1. Coordination with MPWMD staff on Plan scope – As this preliminary work will become the basis for potential future phases of feasibility analysis for a Tularcitos Basin ASR project, it is important that MPWMD staff closely coordinate with the Consultant to outline the key needs at this point in the project’s development. Under this task, it is envisioned there will be a kick-off meeting with staff and reconnaissance field trip to the Tularcitos Basin area.

2. Prepare general background setting and project understanding statement – Based on input and direction from MPMWD staff, the Consultant will prepare a brief written description of the project statement and background setting that will be included in the Report. This will include a rationale for the project area selected for data capture as part of the work.

3. Data reference source compilation and review – The Consultant will identify and review all technical data reference sources in order to describe how each will be utilized as part of this data compilation effort. The data review will include investigation of available streamflow records and summarization of those records in or near the project area. In addition, the data review will include identification of existing surface and/or groundwater quality data that may be available for the project area.

4. Compile and prepare well database – The Consultant will develop an ACCESS-platform well database to compile all existing well and boring records that are available in the area of project interest. This will include all records that can be located from the files of MPWMD, Monterey County Health Department, Monterey County Water Resources Agency, California Department of Water Resources, and any other identified sources. MPWMD staff will assist the Consultant in coordinating data acquisition from the various agencies.

5. Prepare preliminary project area maps and figures – This task will include development of well location and well status maps, geologic maps, cross sections and any other graphics pertinent to establishing the preliminary hydrogeologic framework understanding of the project area.

6. Prepare summary report – A brief summary report will be prepared to document the data compilation effort and will include pertinent observations and recommendations regarding data needs for potential future project feasibility analysis phases.

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