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HomeMy WebLinkAboutAGRMT NO KRGSA18-004KRGSA 18-004 May 3, 2018 Jeof Wynck, President/Chairman Henry Miller Water District 101 W. Walnut Street Pasadena, CA 91103 Re: Reimbursement Agreement Dear Mr. Wyrick: KERN RIVER GSA Rodney J. Palla, Chair Bob Smith Gene Lundquist The Kern River Groundwater Sustainability Agency (Kern River GSA) retained Todd Groundwater to update the Department of Water Resources' C2VSim Model and, using such updated Model, to provide a current and historical water budget for the entire Kern County Sub -basin (Model Update Project). The Model Update Project is more particularly described in the attached "draft proposal" dated January 17, 2017 (Attachment 1). The Henry Miller Wafer District (HMWD) agreed to participate in the Model Update Project and share costs with Kern River GSA based on acreage. Therefore, the Kern River GSA and HMWD agree on the following terms and conditions: I. Each participant signing below will pay its share of the initial proposed budget of approximately $432,000 per the attached table (Attachment 2) for the Model Update Project, 2. All payments shall be due 45 days after receipt of an invoice from the City of Bakersfield (acting as fiscal agent for the Kern River GSA). 3. It is understood that the proposed budget is an estimate only. If costs for the Model Update Project increase more than ten (10) percent over the proposed budget, the increase must be approved by HMWD. Costs above the initial proposed budget will be paid in the some percentages in the attached table, unless otherwise agreed. 4. Costs will be reconciled at the end of the Model Update Project and refunds or additional payments will be due 45 days after the final accounting. If the above terms and conditions are acceptable, please sign and date all copies of this reimbursement agreement and return them to the Kern River GSA. A fully executed original will be returned to the- fk W D. i Sincere Accepted: �__ Henry Miller Water District Rodney Palle _ Chairman By: tel. Title: Cr+n o.n�f`%'eS c( Date: 5 — �'- ) � 1 AGEr+iCY ()RJG AL ATTACHMENT 1 EOE4CYIUINAL TODD= GROUNDWATER January 17, 2017 DRAFT PROPOSAL To: Kern River Groundwater Sustainability Agency From: Phyllis Stanin, PG, CHG, Vice President/ Principal Geologist Mike Maley, PG, CHG, Senior Hydrogeologist / Groundwater Modeler Re: Update to Scope of Work dated May 9, 2016 Kern County Subbasin-Wide Water Budget Modeling with C2VSim Groundwater Sustainability Plan (GSP) Kern River Groundwater Sustainability Agency (KRGSA) As outlined in the Scope of Work dated May 9, 2016, Todd Groundwater is preparing a Groundwater Sustainability Plan (GSP) for the Kern River Groundwater Sustainability Agency (GSA). In compliance with GSP regulations, Todd Groundwater proposed an approach for developing a current and historical water budget analysis using a regional groundwater model developed by the Department of Water Resources (DWR), referred to as C2VSim'. That approach focused on revising the C2VSim model with local KRGSA data only; this proposal expands the original approach to improve the model throughout the Kern County Subbasin and, to that extent, is intended to modify and update the previous Scope of Work. GSP regulations require that the water budget analysis be conducted on a basin -wide basis, requiring the model to be applied over the entire 3,000 square miles of the Kern County Groundwater Subbasin' (5-22.14). In addition to the detailed analysis of local water budgets previously proposed for the KRGSA, GSP regulations also require one water budget for the entire subbosin. Recent developments suggest that the updated C2VSim model may contain local inaccuracies throughout the subbasin. This scope of work addresses revisions to the C2VSim model to address these inaccuracies. Key inaccuracies are: (1) DWR has indicated that detailed banking recharge and recovery data have not been adequately included in the current C2VSim update; (2) recent remote sensing analyses in the Kern County Subbasin have produced revised evapotranspiration data and ' C2VSim refers to the California Central Valley Simulation Model developed by DWR using their modeling code Integrated Water Flow Model (IWFM). C2VSim is a regional model covering the entire California Central Valley and Is being updated by DWR for application to GSP water budget analyses. 2 GSP regulations define "Basin" as a groundwater basin or subbasin identified and defined in Bulletin 118 or as modified pursuant to Water Code 10722 et seq. For this proposal, "subbasin" is used to refer specifically to the Kern County Subbasin as defined by DWR. However, 'basin", as used in GSP regulations, may also be applied to the Kern County Subbasin for the purposes of this proposal. ACEt.CY 2490 Mariner Square Loop, Suite 215 1 Alameda, CA 945011510 747 6920 1 toddgroundwater.com �URIGINAL new crop coefficients over the past 20 years; and (3) it is recognized that local water budget data may not be adequately captured in the regional model. Todd Groundwater is recommending subbasin-wide revisions to the C2VSim model to make the model more accurate with respect to these three key items and to comply more closely with requirements for a coordinated subbasin-wide water budget analysis. This proposal contains a scope of services, schedule, and budget for expanding model revisions across the subbasin. To develop a subbasin-wide model update of C2VSim, Todd Groundwater anticipates requesting data from other local agencies to provide water budget input data for their jurisdiction to compare to data in the model. The requested data are anticipated to include managed water supply data (e.g., surface water deliveries, land use, irrigation demand, return flows, and groundwater banking) and other relevant input data for inclusion in the revised C2VSim model for improvement of model calibration in the Kern County subbasin. If data are provided by others using a technically -defensible methodology (suggested formats/templates to be provided), the input data would be uploaded into C2VSim by Todd Groundwater. In this manner, the revised model and water budget analysis (for current and historical water budgets) would best fulfill the GSP requirement for a coordinated water budget analysis and would produce a more accurate analysis for the benefit of all in the subbasin. This scope of services does not include data analysis by Todd Groundwater of local water budget source data to develop the input water budget files; we assume that others would employ their own hydrogeologic consultants to develop the revised input data in a technically -credible manner. Our scope does include some local coordination forthe transfer of input data, but only to the extent needed to understand the input files being provided and to ensure that the provided input data are being accurately represented in the revised C2VSim model. In addition, our approach does not include the production of local water budgets for other GSAs. The scope of work does not include the analysis or demonstration of subsurface inflows and outflows among any of the districts or GSAs. Local analysis of water budgets for the KRGSA will be conducted as provided in our previous scope of work. The deliverable of this modeling approach is a current and historical water budget for the entire Kern County Subbasin. We think that this approach represents the best methodology for developing the most accurate current and historical basin -wide water budget that considers GSP requirements and deadlines. Additional discussion of the approach, a scope of services, and proposed schedule and budget are included in subsequent sections of this memorandum. C2VSim Water Budget Modeling Kern County Subbasin GSAs TODD GROUNDWATER APPROACH TO THE C2VSim MODEL REVISIONS AND WATER BUDGET MODELING The key objective of this scope of work is to develop current and historical subbasin-wide water budgets to meet GSP requirements.' Our general approach is to use the C2VSim model as a comprehensive framework to provide consistent water budgets on a subbasin- wide basis. As a regional model, the updated C2VSim may over -generalize local conditions u 1p� within the Kern County Subbasin. Asa result, C2VSim results may not be consistent with local site-specific data and knowledge.To addressthisdeficiency, we'<s propose certain checks and revisions on �, p the managed water supply input data (e.g., surface water deliveries, land use, irrigation demand, return flows, and groundwater banking) in C2VSim. We also propose allowing other GSAs to develop their own water budget input files (using... � � their local consultants or resources) and -"`-- input these revised data to improve Figure 2: DWR's new version of C2VSim will model accuracy on a local basis. In have higher grid resolution in Kern County addition, we also propose checking and revising groundwater banking data for the large Kern Fan banking projects. Finally, we propose incorporating the recently -developed crop coefficients from the remote sensing data (being supported by the KRGSA and others). The revised C2VSim will reflect corrected local data (to the extent provided by others) and the revised model will be used to develop current and historical water budgets over the entire Kern County Subbasin. The following summarizes key aspects of our approach. Selection and Application of the C2VSim Model C2VSim is a regional model of the California Central Valley developed by DWR using its modeling code IWFM. IWFM is an integrated model that simulates groundwater, the unsaturated zone, and surface water flows. Given DWR's emphasis on water management, 3 GSP regulations require current, historical, and projected water budgets. This scope of work includes current and historical water budgets only. Projected water budgets require analysis of individual projects conducted by each GSA to achieve the GSA -specific measurable objectives toward sustainability. A projected water budget analysis for the KRGSA will be conducted as described in our previous scope of work and is not reproduced herein. C2VSim Water Budget Modeling I AGENCY Kern County Subbasin GSAS 3 TODD GROUNDWATER ORIGINAL C2VSim provides a strong representation of surface water and groundwater water budget components that makes it a preferred platform for determining water budgets. C2VSim is anticipated to be DWR's primary tool for evaluating water management in the Central Valley and is specifically referenced in the GSP regulations for application to GSP water budgets (§354.18(f)); therefore, utilizing C2VSim is advantageous for GSP compliance. DWR is in the process of updating C2VSim through September 2015 to support SGMA compliance for the critically-overdrafted basins in the Central Valley. We will revise the updated C2VSim (with simulations through September 2015) to develop a current and historical water budget for the Kern County Subbasin. The updated C2VSim is expected to be released by DWR in June 2017; however, input files for the updated model can be accessed prior to the final model release. Given the GSP deadline, these files need to be obtained and reviewed as soon as possible upon notice -to -proceed. The updated C2VSim consists of a coarse-grained and a fine-grained version referred to as C2VSim-CG and C2VSim-FG, respectively. The C2VSim-CG uses the mesh used in the previous C2VSim version with data through 2009. Because the average element size of C2VSim-CG is over 14 square miles, C2VSim-FG is also being developed by DWR to provide the data resolution to better support SGMA (Figure 1). The C2VSim-FG will have an average element size of 0.6 square miles. Both versions of the updated C2VSim will include the following hydrostratigraphic layers: • Shallow, unconfined aquifer • Regional confining layers • Active confined aquifer (contains high level of pumping) • Inactive confined aquifer (contains limited pumping), and • Saline confined aquifer. This scope of work does not include changes to the hydrogeological conceptual model or natural water budget components (such as precipitation, soil properties, or streamflow) of C2VSim. Specifically, the architecture of the model including layering, discretization, boundary conditions, and aquifer properties will not be revised. After the various hydrogeologic conceptual models have been developed as part of the numerous GSPs in the subbasin, there may be technical justifications for such changes to the C2VSim or other regional model for future applications. However, these modifications can be considered for future SGMA compliance after the initial GSPs containing the current and historical water budgets have been submitted. Consistency of Modeling with GSP Regulations The Kern County Subbasin water budget will follow GSP regulations by providing an accounting of the volume of groundwater and surface water entering and leaving the subbasin and the change in the volume of water stored. Information will be reported in tabular and graphical form as required by the regulations. Specifically, DWR requires that GSP water budgets quantify the following: C2VSim Water Budget Modeling ACE!u"h' Kern County Subbasin GSAs 4 TODD GROUNDWATER IOfiIGINAL • Total surface water entering and leaving a basin by water source type. • Inflow to the groundwater system by water source type, including subsurface groundwater inflow and infiltration of precipitation, applied water, and surface water systems, such as lakes, streams, rivers, canals, springs and conveyance systems. • Outflows from the groundwater system by water use sector, including evapotranspiration, groundwater extraction, groundwater discharge to surface water sources, and subsurface groundwater outflow. • The change in the annual volume of groundwater in storage between seasonal high conditions. • The amount of overdraft over a period of years during which water year and water supply conditions approximate average conditions (if overdraft conditions occur as defined in Bulletin Sig). • The water year type associated with the annual supply, demand, and change in groundwater stored. • An estimate of sustainable yield for the basin. Selection of Time Periods for Water Budgets and Model Revisions The updated C2VSim model will be capable of simulating a long-term base period (some data back to the 1920s and more detailed data back to the 1970s). However, to adhere to the expedited schedule and to provide a reasonable budget that also meets GSP requirements, we propose that model revisions be limited to relatively recent and specific time periods when data are more accurate and more readily available. For the current water budget, GSP regulations require that the analysis be conducted for the most recent water year' (WY) available; for the DWR-updated C2VSim model, this is reported to be WY 2015. For the historical water budget, it is desirable to define a base period when natural hydrology represents average conditions. Regulations require that this time period cover at least 10 years. For this project, a 20 -year base period from WY 1995 through WY 2014 is proposed. This 20 -year period is associated with average conditions of precipitation and Kern River flows (represented as 100% Annual Index on the Kern River). This period also begins at the end of a dry period with relatively stable water levels. Additional documentation for the historical time period was provided to the Kern Groundwater Authority (KGA) on November 7, 2016 and included a number of hydrographs illustrating water level conditions over the 20 -year time period. The 20 -year time period is also advantageous for incorporation of newly -available data. It is our understanding that the KGA has commissioned a remote sensing study of evapotranspiration (ET) across the entire subbasin that will provide basin -wide values for agricultural demand corresponding to the WY 1995 through WY 2014 base period. We will use these data, as available, to check against agricultural demands already incorporated into ° Water Year is from October through September. For example, Water Year 1995 is from October 1, 1994 through September 30, 1995. ri , C2v5im Water Budget Modeling IAGEtiCY Kern County Subbasm GSRs 5 TODD GROUNDWATER ORIGINAL the most recent time period of the C2VSim model. Adjustments will be made to the model to represent the newly-available data. These regional model revisions will be improved if other GSAs coordinate by providing local water budget input data. We will ensure an overall mass balance is considered in the zone budget revisions. In our preliminary discussions with the C2VSim developers at DWR, a significant portion of model uncertainty is related to incomplete data regarding groundwater banking and other managed recharge operations in the Kern County Subbasin. Recognizing that several of the large groundwater banking projects (especially those on the Kern Fan) pre-date the 20-year base period, we propose checking/revising data for groundwater banking operations dating back to at least 1978, the beginning of banking at the City of Bakersfield 2800 Recharge Facilities. For the Kern Fan banking projects, we will check data for the Kern Water Bank, Berrenda Mesa, Pioneer Project, and the City of Bakersfield 2800 Recharge Facilities, and verify these input data with the local banking authorities. For other district-specific groundwater banking projects, we will rely on those districts to provide corrected data if model revisions are necessary. For these proposed time periods, mon nthly input data will be required. For example, for surface water deliveries, monthly volumes (and locations) will be required from WY 1995 through WY 2015. Revise C2VSim for Crop Coefficients, Groundwater Banking, and Local Water Budgets, Our approach for revising the DWR-updated C2VSim model includes: • newly-acquired crop coefficient data from remote sensing studies • historical amounts of groundwater banking, and • monthly local water budget data if provided by other GSAs and/or water districts. We assume that remote sensing data will be provided to us by the KRGSA, who can access these data being developed by the KGA. We assume that groundwater banking data can be verified and/or revised through coordination with the local banking authorities. Local water budget inputs will be revised if local GSAs/water districts provide monthly input data for their service areas. We will work through the KRGSA on how best to coordinate with others to acquire the input data in formats easily incorporated into the C2VSim model. A key feature of IWFM is DWR's agricultural and urban water supply and demand management module that dynamically simulates both surface water and groundwater supplies based on demand estimates, as affected by usage and climatic conditions. Todd Groundwater will consider the function of this module and provide a desired template to be used when obtaining input data from others. We will coordinate with others to ensure our understanding and accurate representation of input data into the model. C2VSim Water Budget Modeling Kern County Subbasin GSAs 6 TODD GROUNDWATER LAGENOY Coordinate with DWR We will coordinate with DWR to work out methods to revise C2VSim in a manner consistent with DWR practices and to facilitate a data transfer to support DWR after the development of C2VSim with revised Kern County Subbasin data. Our scope includes time for coordination and meetings for these discussions. We will use DWR for technical support as needed, but the scope of work herein will be conducted by Todd Groundwater. DWR's current plan is that C2VSim-CG and C2VSim-FG will use the same water budget information, but C2VSim-FG will provide a more detailed spatial distribution of the data, especially in land use and crop type information. In our preliminary discussions with DWR, C2VSim-CG is currently planned to be released in lune 2017, but that C2VSim-FG does not have a projected completion date. Therefore, we will use C2VSim-CG for developing the water budgets if C2VSim-FG is not available. PROPOSED SCOPE OF SERVICES Our proposed scope of services incorporates our approach concepts discussed above. It is organized around the plan contents in Article 5 of the GSP draft regulations, with due consideration of other articles. Task 1: Initial Review of C2VSim To expedite the development of the Kern County Subbasin water budgets, we will review currently available versions of C2VSim. An update of C2VSim through September 2015 is currently being developed by DWR with an anticipated release date in mid -2017. To begin our assessment in preparation of developing water budgets, we will obtain a beta version of the C2VSim from DWR. We will then review the input data requirements and results for the Kern County Subbasin to build a foundation for using C2VSim. This effort sets the stage for the C2VSim revision in Task 3. The subtasks for Task 1 are described below. 1.1— Coordinate with DWR on C2VSim To facilitate working with C2VSim, we will open a channel with the DWR C2VSim developers to help facilitate our work. Early in the project, we will set up a meeting with appropriate DWR staff responsible for developing the C2VSim model to discuss the data used for Kern County. We will continue to coordinate with DWR over the life of the project, as needed, to help resolve C2VSim and Kern County Subbasin-related issues. 1.2 —Assess Kern County Water Budget Data Requirements The C2VSim input data for the Kern County Subbasin will be reviewed, focusing on the managed water supply information. This step will build our working understanding of the model. We will compile a list of the key managed water supply data already included in C2VSim. This list can be compared to any data provided by local agencies to identify missing or incomplete water budget components in the current version of C2VSim. C2VSim Water Budget Modeling EAG7��Oy Kern County Subbasin GSAs 7 TODD GROUNDWATERal 1.3 — Initial Assessment ofC2VSim Results in Kern County The C2VSim results will be reviewed for the Kern County Sub basin to assess the quality oft he model simulations. The results of this review will be incorporated into a Model Development Plan that will guide efforts for Task 3. The purpose of this plan is to help resolve issues concerning key parameters and assumptions early so that these will not manifest themselves later in the process. These will be documented in the Technical Report (Task 5). Task 2: Coordinate with Local Agencies on Water Budget Input Data As discussed previously, local water budgets will be coordinated with other GSAs/water districts to verify the accuracy and, if warranted, to revise the input data. We emphasize that we are not proposing to develop local water budgets for others; the output from the model will be a current and historical water budget for the entire subbasin. We have not included costs to analyze source data or develop the water budget components for areas outside of the KRGSA. We propose only to revise the model with the best available information on local water budgets. The following outlines the subtasks for Task 2. 2.1 Develop Local Agency Data Request We will develop a data request to provide guidance to local agencies regarding the types of water budget input data needed for the C2VSim revision. The data request will focus on managed water supply information, but will also include the current understanding of overall water budgets for comparison to the C2VSim results. 2.2 Coordinate with Local Agencies on Water Budgets After the data request has been submitted to the local agencies, Todd Groundwater will be available to answer questions and facilitate provision of the input data. Time is included for two trips to Kern County to meet with others, as needed, to better understand the input data being provided and to accurately represent the same in the revised model. 2.3 Compile and Review Local Agency Water Budget Data We will compile water budget input data provided by others for comparison to the model. The water budget data will focus on managed water supply information for the C2VSim revision. For example, determination of groundwater irrigation demand can be calculated from estimates of applied water and return flows using crop maps, and then subtracting surface water irrigation supplies. Urban groundwater pumping and groundwater banking recovery amounts are measured directly and provide a more accurate dataset to compare to model estimates. 2.4 Identify Data Gaps The results of this compilation will be summarized using tables that put the water budget components into a consistent format to illustrate the potential range and identify potential data gaps. An assessment of these data will be performed to determine the overall strengths and weaknesses of the different data sources. A proposed water budget for the GSP will be developed that utilizes the highest quality data and is consistent with the conceptual understanding of water management in the subbasin. i C2VSim Water Budget Modeling I tw.Y Kern County Subbasin GSAs 8 TODD GROUNDWATER AGENCY 2.5 Water Budget Workshop A workshop meeting is planned to present the overall approach for developing the Kern County Subbasin water budgets to the KRGSA (and others), and to discuss issues and concerns about the process. Feedback from the group will be used to improve and refine the water budgets. Task 3: Revise C2VSim with New Data Task 3 includes revising C2VSim with the managed water supply information from others. Because the IWFM code is primarily a text -based input data structure, time is included for developing a systematic method for revising input data, outputting results, and providing data quality reviews throughout the process. Task 3 is dependent upon DWR officially releasing the new version of C2VSim through 2015. For scheduling purposes, we assume that the new version of C2VSim will be available by June 2017 and that input files are available in early 2017. The following outlines the subtasks for Task 3. 3.1 Verify C2VSim Data and Calibration in Kern County Subbasin Once the officially released version of C2VSim through 2015 is released by DWR, we will acquire the model and verify the results for the Kern County Subbasin. We will review the model documentation to evaluate whether there are any changes in the input data for the Kern County Subbasin compared to the beta versions used in Task 1. 3.2 Prepare Revised Data for C2VSim Input The data received from others will be formatted into the data file structure required for C2VSim. Areas with little to no new information will default to original data contained in C2VSim. Because input data for IWFM is in large text files, a systematic method for revising input data and providing data quality reviews will be applied throughout the process. 3.3 Apply Revised C2VSim for Kern County Subbasin After revisions are complete, the C2VSim will be setup and run. Ongoing quality review will verify that the model is properly applying the new data. A sensitivity evaluation will be run for a limited number of key parameters to evaluate the effects of varying parameters in the Kern County Subbasin on model results. The results of the model runs will be processed and tabulated. 3.4 Evaluate Revised C2VSim Performance The results will be assessed to evaluate the effects of the new data on the overall model calibration. The results will be compiled and documented for the Technical Report. We will continue to coordinate with DWR during the C2VSim model revision process for the Kern County Subbasin. Recommendations on how to improve the C2VSim model will be presented to DWR so that future model revisions can take advantage of the local knowledge developed for the GSPs and provide an improved tool for assessing water budgets in the future. C2VSIm Water Budget Modeling ACENCY Kern County Subbasin GSAs 9 TODD GROUNDWATER IpRIGINAL 3.5 C2VSim Revision Project Updates Two project update meetings are planned to present the overall approach and results of the C2VSim revision to the KRGSA (and others), and to discuss issues and concerns about the process. Feedback from the group will be used to improve and refine the model. Task 4: Generate Current and Historical Water Budgets for the Kern County Subbasin Afterthe C2VSim model is revised with Kern County Subbasin managed water supply data and the results are verified, we will generate subbasin-wide water budgets for the Kern County Subbasin. Water budget data will include the change in the volume of water stored, and the information will be reported in tabularand graphical form as required by SGMA. The following outlines the subtasks for Task 4. 4.1 Generate Initial Subbasin Water Budgets from Revised C2VSim We will use the IWFM Z -Budget feature to develop the Subbasin water budgets from the revised C2VSim. The water budgets will quantify the required elements required for SGMA including simulation results for subsurface inflows and outflows, managed aquifer recharge and irrigation pumping and return flows. 4.2 Public Review of Subbasin Water Budgets After initial review and comment by the KRGSA, the results of the Kern County Subbasin water budgets from Task 4.1 will be reviewed in a public workshop. We will address comments on the water budgets and work to reconcile any questions on the results. We will compile a list of recommended changes for consideration of the final Kern County Subbasin water budgets. 4.3 Generate Final Subbasin Water Budgets from C2VSim Final Kern County Subbasin water budgets will be generated using an agreed upon list of recommended changes. Final subbasin water budgets will include the change in the volume of water stored, and the information will be reported in tabular and graphical form as required by SGMA. Results will be documented in the Technical Report to provide the technical basis for the Subbasin water budgets to support the Kern County Subbasin GSPs. 4.4 Kern County Subbasin Water Budget Workshop The results of the initial C2VSim water budgets will be presented to KRGSA (and others) during a public workshop. Task 5: Technical Report A technical report will be developed that documents the work performed for this scope of work. The technical report will provide the technical basis for developing the KRGSA and subbasin-wide water budgets and revising C2VSim. The modeling results and water budgets produced for the Technical Report will be consistent with DW R's SGMA guidelines and BM Ps. The following subtasks are included in Task 5. C2VSim Water Budget Modeling AGENCY Kern County Subbasin GSAs 10 TODD GROUNDWATER ORIGIiVAL 5.1 Draft Report For costing purposes, we assume that the draft technical report will require two draft versions. An Administrative Draft Technical Report will be prepared for KRGSA review and comments. Commentswill be incorporated into a Draft Technical Report. Electronic submittal is assumed for both versions. 5.2 Final Report The Final Technical Report will address final comments and will be included as an appendix in the KRGSA GSP. As directed by the KRGSA, the report will also be submitted to entities providing cost reimbursement. For costing purposes, we assume FedEx delivery of 10 hard copies plus an electronic version for the Final Technical Report covering the current and historical water budgets. Task 6: Project Coordination and Communication This task covers project coordination with the client throughout the project. Coordination will include project planning, on-going communications and project status updates. We assume that communication during the project will be conducted via emails, telephone and web meetings. KEY ASSUMPTIONS FOR COMPLETING SCOPE OF WORK Based on our experience, this is an aggressive, but realistic schedule for completing the scope of work contingent upon cooperation of the KRGSA and other agencies in the Kern County Subbasin in working through potential issues related to the water budgets. In order to adhere to the budget and schedule, our key assumptions are as follows: • The official release of the updated C2VSim by DWR with simulation results through September 2015 occurs by late summer 2017. We will request beta versions of the model for initial work; however, the water budgets will need to be based on the official version. Any delays by DWR in releasing this model may impact the schedule. • C2VSim is developed using the IWFM modeling code, which uses a text-based input data structure; therefore, time is included for developing a systematic method for revising input data, outputting results, and providing data quality reviews for working with this type of data structure. • We will coordinate with agencies, as appropriate, to understand data provided and to check data for reasonableness, as well as CC data entry into the model. Nonetheless, we cannot be responsible for errors or omissions provided by others in either the local water budget data, source data, or methodologies employed by others to develop the water budget data. • This scope of work focuses on historical and current water budgets for the Kern County Subbasin. Projected water budgets, which are also required by the GSP regulations, are not included in this scope of work. • This scope of work addresses only changes related to the managed water supply components of C2VSim, and does not include changes to the hydrogeological C2VSIm Water Budget Modeling Kern County Subbasin GSAs it TODD GROUNDWATER ACEf4CY ORIGINAL conceptual model or natural water budget components. We assume that no alterations will be made to the C2VSim including architecture, layering, or grid spacing. The scope of work does not include hydrogeologic consulting required to develop local water budgets for other local agencies; rather, we assume that the water budget input data will be provided by qualified professionals working separately under the direction of the local agencies. C2VSim input data for areas where local agencies provide little to no additional information, or data that cannot be readily incorporated into the model, will default to data already contained in C2VSim. COST ESTIMATE A cost estimate is provided at the end of this text on Table 1. Our budget for the groundwater assessment including Tasks 1 through 7 is estimated to total $431,957 as summarized on Table 1. Costs include labor, fees, and expenses for each project task. The largest level of effort is assigned to Task 3 to revise the existing C2VSim with Kern County Subbasin managed water data. A relatively large level of effort is also assigned to Tasks 2 and 4 for development of subbasin wide water budgets and coordination with local agencies. This is likely to be one of the first GSPs to be prepared in the State, which introduces some uncertainty forthe cost estimate. Nonetheless, we think that the scope and costs have been developed with a good understanding of the recently -adopted regulations. This budget modifies our previous budget for developing a GSP for the KRGSA as follows. Total Estimated GSP Budgets Previous Cost Estimate dated May 9, 2016 $359,964 (as modified July 16, 2016 in Exhibit A of KRGSA 16-002( Cost Estimate from Table 1 herein (January 17, 2017) $431,957 Total GSP Budgets $791,921 SCHEDULE Assuming approval of this project, we can complete the proposed scope of work in about nineteen months from the notice to proceed. The Todd Groundwater Team stands ready to start upon notice -to -proceed in February 2017; if approved in February 2017, and the DWR updated C2VSim model is available in July 2017, we should be able to complete the project by September 2019. Our proposed schedule is provided by task and subtask in Table 2. Proposed Project Updates and Workshop meetings are shown as diamonds. C2VSim Water Budget Modeling 10 AGENCY County Subbasin GSAs 12 TODD GROUNDWATER ORIGIPIAL 1: Cost Estimate w L2Vs'M Madan Mr Mara G ,SuoanN ..,B•I, bL Weerdnon: advise MR,C Me lmomvea lnddm,da C••Mv Sdab,Mn for lM XRGSA GSP wr Gmun., O•elalndand, Awn., i.skl Tddd J.d N—Ibd, .... .w QdgP .. 1. en•,P.11 senior PM anda. s ad {vfi Banlw XveFn. Sxta Bain. G.•IlEn. {am Yaxi.b GwIdEnp E113 — XYeropeo.4b,aa. s+la GBI ` 5110 ..In Ca Ya too Tge1 Hours la... xx1. Dlivel Eep•n. .1 Tok I In ani RrvMw aQV3im IS L•wtln..1 DWR on C2V6im DI R.q,m , Gunry Water Buepel mbRanA—a. u:m �a naxxmem Wwaysm In Mam conn < 20 Ix 20 S 6040 a 1.7se 3 121 s x],s s 3w E - zW a - a S_ - S 6161 - 6 61) z +W _ d _ 90 s x0 s s__±a 367 s 2vz4 . a o nek l Buddal rz 1. x0 1. d 0 ae s 1. a.{ 21 2W a o{ sl.ux T&A 2: CaNiivb. Latl Agana.. za..a, I—F., Wb Repan 2PC ranale .:1, Ma And -1-•n WalerDana.a 2Yd.ane Rermw Lpcal Apenry Weser&ppelON 14 W-1 Dae all 2.5 Westar SW a W -,.p -- 3 4]30 S 16.a00 E 06 E 3z0 S - - 5 � I'. I8 - 16 _ 60 0 H. - ED ]6 E 00W 60 4 { 12. E _ aIBOBB E 3x]1] _ _ 40 _ _ 112 E 33 W0 S 03 b B 48 E - W b a.6 E 1. 3 4 �i -. - iE 0 _ W' i 44 21 a 9070 1 _ S BW `5 0 a 3310 0 30 aal a• o ad 12 a 1. { 66..6 f 1,30] { 3W0 f ID0 f 70167 Txk 3:... Q.ial 3.1. van, Llaem DW. and almrmwn 11 Xem Ceunry Ouaeeam 12 Pap.b Rerlma.laldl QVSim Input 3d Ppp'Y RevxW C21,m MXam 34 ElllIIl Rl useW LV1m peemnc 36 QV6im Revlgwn ProtlDWele• 00 ., 0 W E 17511 E 1]1. S ]H E 38,600'S_..]N E 60941) 3 IP9 3 i jI -...__ i BO _.. 6a 312 xN E 35330 0 16 MO 1B0 N - -�- _ _ E -_-4 4_. � 4 63,156 1. N 213 30 E _45600 E ]BEO 3 810 3 139 3 -_ S 1600 In 4 W 3 T.ek 3Bu 6B0 ad 0 M f 0 S lK { a { 0 al "a.. T.ek 4. Gaenb 4unndnt and Hdteee. 11 MrB•W9ensfor 4.0 Leneaa " 6 W eri dUdndna h•mR O,V6 40 2 Pudn Renew a16ua0aam Water Bu m'' 40 46 Genmb Fna SUWeenWeler Bue)ea Mm c0V5m 40 ♦a Wm Gpunry Suaaaun Wa¢r6un9.1 Wonah 0 j 16 B _ 20 U S t8 W0 a 2,120 3 320 s 242 E 376 5 - s 6W 5 E 115 121) _ 72 s 6o a mozz x4 8" _ f 8 8 W E to 0]6 ETask 4 5 ]0 4 BW 40ue 120 a 3' o x36 S 9 s 4W f 1W f ae RB T.ek 4'. T.anialadportHS i. DnR RepM 0 Fn.I Re•n 4 R a 100 4. 10 4 M d 22 a a !14 4 1]S � E 13 260 1W S 0]B f WI5852. 19x]0 x21 2 5 320 4 3WIE 30 SBUW .1 14 38 6360 f 6 3 slf d3 f 89 26 Talk Prape C—MiwB•n and coMmamwlwn Pres mco-nmrMa..m.n1 6. .� 22 s a1 1716 W11 17110 f .1 0 ss w s11 12d S la. 1 a a a ]am Prvled B,dWI lal Ild 1 12Q 1 :am a • s e,•e9 a sBzs s s03 S z u 9Y���:� 93 38 CE pd YP& ATTACHMENT 2 Attachment 2 Todd Groundwater Modeling Participating Percentages Activity Agreement Member Participating Acreage Participation Percentage Initial Budget Buena Vista Water Storage District 47,810 4.41% 19,063.95 Henry Miller Water District 26,055 2.40% 10,389.27 Kern Groundwater Authority Arvin Community Services District 2,560 0.24% 1,020.78 Arvin -Edison Water Storage District 100,031 9.23% 39,886.76 Cawelo Water District 46,441 4.29% 18,518.07 Kern County 30,000 2.77% 11,962.32 Kern County Water Agency 2,230 0.21% 889.20 Kern -Tulare Water District 11,160 1.03% 4,449.98 Kern Water Bank Authority 20,492 1.89% 8,171.06 North Kern Water Storage District 80,037 7.39% 31,914.27 Rosedale -Rio Bravo Water District 43,356 4.00% 17,287.94 Semitropic WaterStonage District 223,342 20.61% 89,056.27 Shaffer-Wasco Irrigation District 38,918 3.59% 15,518.32 South Son Joaquin Municipal Utilities District' 64,712 5.97% 25,803.52 West Kern Water District 10,712 0.99% 4,271.35 Westside Water District Authority 7,680 0.71% 3,062.35 Wheeler Ridge-Maricopa Water Storage District 90,842 8.38% 36,222.70 Kern River GSA 2,3 231,934 21.41% 92,482.28 Olcese Water District 5,090 0.47% 2,029.61 Totals 1,083,402 100.00% 432,000.00 'Includes McFarland GSA 2Includes Greenfield GSA 3Includes half of Lamont PUD acreage