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In the Finnemore and Hantzsche a er;the discuss three o tions to. consider as potential methods of AA Y A reducing the mounding phenomenon and allow the soil.to manage.the anticipated flows. The first is increasing the size of the disposal field: Based upon-the average daily. low calculations, it is anticipated the disposal area is ample size to accommodate the highest calculated flow volumes at f harvest time of the year. The disposal area is based on mathematical computations for sizing found -in the S.J.C. Sewage Standards and acceptable EHD parameters. The second method is elongating the shape of the area covered by the disposal field. As noted on the - -design plans,the filter bed is elongated in a L9:1 length-to-width ratio. Thirdly, operating.the field intermittently should decrease the mounding effect. As noted in the filter bed design, there are two separate filter bed disposal areas. Effluent will be pumped by two separate.pumps that will alternate between these two filter beds,thus creating intermittent dosing of each bed. If it is determined at.some point in the future that mounding effects are preventing proper effluent treatment and disposal;the designated 100%replacement area may have to be activated. Since the reserve area is.-the existing vineyard (See aerial photos), there is hugely sufficient res area. Activation of the 100% reserve area may have to occur:prior to attaining the projegte 2,493 gpd effluent flow volumes after the phased completion and full employee occupancy of t Winery. I E. SURFACE WATER INFORMATION The surface water:.retention is not an issue with this project since the surrounding vineyard manages rainfall. Groundwater dilution affects can only be truly discerned with'complicated groundwater monitoring and modeling. According to a scientific paper authored by Shaw and.Turyk (1994); reduction of nitrate concentrations in groundwater can occur primarily through dispersion, or by percolating rainwater recharge. /Climatic Data: Rainfall versus-Evapotranspiration: NLS§3.2. It is generally and scientifically accepted that when.precpitation-exceeds evapotrans- piration (Eto), deep percolation of surface rainwater may occur. Evapotranspiration refers to water evaporation-that takes place both at the soil surface and transpiration'by plants, and is defined as -water loss from a large field of 4-to-7 inch tall, cool-season grass that is not water stressed. The following chart illustrates rainfall and evapotranspiration for the Lodi area. Precipitation data -was obtained from the Soil Survey of San Joaquin County. The conservative "2 years in 10" data _was used and not the "average rainfall" data. Evapotranspiration data was obtained from the California Irrigation Management Information System(CIMIS): Chesney Consulting