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Kennedy/Jenks Consultants 5.4.2.3 Sample Collection Each soil type identified by the USDA will be characterized by collecting representative soil samples from the soil column. Based on the spatial distribution of the soil types, one sample location will be identified in the Veritas soils, three sample locations will be identified in the Delhi soils and four sample locations will be identified in the Honcut soils. To further characterize possible soil variations in the vineyards, sample locations will be identified in both the bottom of the furrows and the top of the ridges. For each soil type, at least one sample location will be collected using a soil core so that sample volume is known. Samples will be collected at three depths, depending on soil layers observed in the field, from the remaining sample locations. The surface sample for each location will be collected as a composite sample from at least five nearby locations. An assessment of the presence of diatomaceous earth will be made at each sampling location. -- Soil sampling will be performed in accordance with Kennedy/Jenks' SOG for Surface and Shallow Soil Sampling (Appendix D). Each sample will have a moist weight of approximately one kilogram and will be collected from representative areas of the soil profile. Samples will be collected using a soil auger and will be bagged, labeled, stored at 4°C and transported immediately to a state-certified agricultural laboratory for analysis. 5.4.2.4 Constituents and Methods to be Analyzed The degree of treatment will be determined by the measurement of certain parameters within process water and soil samples that will be used to indicate the efficiency of land application to treat target constituents in the process water. The constituents and analytical methods for soil analysis as well as preferred methods for the analyses are presented in Table 12. 5.4.3 Hydraulic Capacity The quantity of water that can be applied to land for treatment is dependent on the hydraulic capacity of the soils. Three separate properties make up the hydraulic capacity of soil: (1)the infiltration rate, (2) the percolation rate, and (3) available water capacity. Infiltration is the amount of water that will penetrate the soil surface and then travel through the soil column. Low infiltration rates can cause ponding or runoff if the water is applied faster than it can infiltrate into the soil column. Percolation is the rate water moves through the soil column once it is in the subsurface. Low percolation rates can also cause ponding or runoff if the water is applied faster than it can percolate through the soil column. Available water capacity is the amount of water that can be stored in the pore spaces between soil particles. The infiltration rate can be managed by disking or plowing when the soil is dry to break up the surface soils. There is little that can be done to modify both the percolation rate and the available water capacity because they are both functions of the soil structure. Soil physical properties will be measured as discussed above. This data set will be used to calculate hydraulic properties for individual soil types and layers. Groundwater Protection Work Plan, The Wine Group Page 5-3 Franzia Winery, Ripon, California M.].'_a;ke�;wp'C9.rery�r'saw an &Wtax