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Eastern San Joaquin Groundwater Basin Groundwater Management Plan Northeastern San Joaquin County Section 5 Groundwater Banking Authority 94 Groundwater Monitoring Program 4. Telemetry Selected wells (as many as 10) will be instrumented to provide real-time water-level data and potentially water-quality data (such as pH and specific conductance). Data will be output through satellites using the Geostationary Observational Environmental System (GOES) and uploaded to the Automatic Data Acquisition System (ADAPS) on California District computers. Graphical and tabular data will be available in near-real time through the Internet. Where available the data also will be output through local Supervisory Control and Data Acquisition (SCADA) systems. Equipment will be calibrated and serviced at 15-week intervals by U.S. Geological Survey personnel. 5. 3-D Visualization Spatial data will be stored in a GIS which will be the basis of a 3-D visualization of the ground water flow system using Earth Vision computer software. The visualization will incorporate hydrogeologic units and spatially connect data in the area of high-chloride water and along study flow paths. The visualization will be a tool to evaluate data uncertainty and illustrate the effects of aquifer hydraulic properties and ground-water flow on the movement of high-chloride water toward wells. 6. Data Interpretation and Report Preparation Sources of high-chloride water to wells will be determined primarily from trace-element to chloride ratios and further refine by 18O and Deuterium analysis. Results will be compared to similar data collected in coastal aquifers elsewhere in California. The recharge temperature and tritium/helium-3 age of younger ground water will be estimated using the computer program NOBLEGAS. Recharge temperature will be used to evaluate focused sources (such as infiltration from stream flow) and diffuse sources (such as infiltration of precipitation, and irrigation return) of ground-water recharge. Changes in ground water chemistry and the age of older ground water interpreted from carbon-14 data will be evaluated along selected flow paths using the computer program NETPATH. Interim papers describing the source of high-chloride water to wells and the movement and age of water from wells will be published during the course of the study. Annual progress meetings with cooperators and stakeholders will be held. A final report integrating information from all aspects of the study including data review, well installation, data collection, telemetry, and 3-D visualization will commence at the end of the Study. 7. Project Costs The total cost of the study is $2,579,350. The proposed USGS contribution will be $625,000 over 5 fiscal years as well as an additional $625,000 from the DWR over the first 3 fiscal years. Member agencies within the Authority will contribute the remaining $1,322,350 over next 5 fiscal years. 5.2 Monitoring Protocols In order to ensure that groundwater data is collected in a systematic and consistent manner, the Authority has adopted the Groundwater Monitoring Program Quality Assurance/Quality Control (QA/QC) Plan, prepared by MWH in 1998. The QA/QC Plan addresses the following items: monitoring and sampling preparations, sample collection procedures, chain-of-custody procedures, sample transport, laboratory procedures and methods, and data validation and reporting. The QA/QC Plan can be obtained at the San Joaquin County Department of Public Works Stormwater Management Division. The revised QA/QC plan proposed as part of the GDC is expected to be completed by the spring of 2005.