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' 1 Kennedy/Jenks Consultants • Weekly Observations. Weekly observations of the test plots will be made to note the i progress of the study. An example observation log is included in Appendix A. Observations that will be noted include: • Percent coverage of crop • Crop health (e.g., wilted, brown spots, pests, height, etc.) • Irrigation quantity • Irrigation uniformity (e.g., ponding, runoff or erosion) • Weather for the week (e.g., precipitation amount, sunny, windy, cloudy, etc.) • Fertilizer application or other agricultural practices such as weed control, tillage, etc. • Crop Uptake Monitoring. Crop uptake is a direct mechanism of assimilation. Crops incorporate constituents in their biomass and are then harvested to remove the constituents from the site. Table 3 lists crops that have been identified for the first year of cropping. The list of crops will be refined the second year based on results of the first year study. During the course of this study, biomass removal from the test plots will be measured for each harvest. A composite sample of the harvested material will be analyzed for general minerals (including calcium, magnesium, potassium, sodium, chloride, and sulfate), total nitrogen, and ash content, which is equivalent to fixed solids. A standard operating guideline (SOG) for crop testing is included in Appendix B. • Irrigation Water Quality Sampling. Treated winery process water from the fourth pond will be used to irrigate the test plots. A minimum of eight samples will be collected from the irrigation water and sampled for total dissolved solids (TDS), FDS, pH, electrical conductivity (EC), total Kjeldahl nitrogen (TKN), ammonia as nitrogen (ammonia-N), nitrate as nitrogen (NO3-N), and nitrite as nitrogen (NO2-N). Two samples will be collected per irrigation event for four irrigation events. If a correlation between FDS and EC can be made based on the eight samples, EC and pH measurements will be made during every irrigation event. If a correlation cannot be made, TDS and FDS measurements will be made more frequently. The EC and/or FDS measurements will be used to calculate the FDS loading to the test plots. An SOG for water sampling is included in Appendix C. The nitrogen content of process water and the projected loading rates should provide sufficient nitrogen for crop needs. Therefore, addition of fertilizer nitrogen is not anticipated. If fertilizer application is required, the amount and timing will be noted and incorporated into the nitrogen balance for the test plots. • Root Zone Soil Sampling. Soil sampling is proposed for each test plot, prior to planting and after harvest of each crop. Samples will be collected from three soil auger holes in each test plot and composited. Individual depths sampled will be approximately 0-6 inches, 7-18 inches, 19-30 inches, 31-45 inches, and 46-60 inches. These depths may be adjusted during the first sampling event if soil properties, primarily distinct layering or salt accumulation, are identified. Once sampling depths are established they will be used for the Crop Uptake and Assimilative Capacity Work Plan, Page 5 Woodbridge Winery, Acampo, California