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t n C) ❑ One on the North side of Avena Road serving the residence that is just south of the`shop facility. ❑ One on the North side of Avena Road serving the residence which is south of the existing milk parlor. ❑ One, to be abandoned, on the north side of the existing milk parlor. ❑ One on the North side of Avena Road, serving the duplex residence and a mobilehome. ❑ New proposed to the north of milking parlor for employees during the milking operation. The human effluent septic systems are considered to be insignificant.35 • Corral runoff: _ Corral runoff is directed to drains that are strategically located to collect all site runoff and conduct r _ it to the settling ponds. Agricultural liquid manure effluent storage ponds: There are three nutrient laden water storage areas. One and two, being the settling ponds; third is the flush lagoon. Reference the site plan for locations. These areas will have clay that will meet the requirement by the State Water Quality Control Board of a minimum of 10% clay and no more than 10% gravel content at the liner of a liquid storage lagoon. • Agricultural solids storage areas: There are two classifications of surface manure storage areas, the composting area and the cattle corrals. These areas will be graded with slopes to cause runoff to flow to drains that conduct it to the settling ponds. These areas will be evaluated upon completion of the grading. The evaluation will consist of random soil sampling that will be analyzed for clay content. These results will be required to meet the minimum requirement to contain a minimum 10% clay. • Nitrate impacted groundwater: To provide base line data in order to evaluate any potential future impacts to ground water by the Dairy Facility, twelve ground water samples were collected. Sample locations are on thelWater Sample Locations map, in Appendices Section B. For Groundwater Sampling Procedures, see Appendices Section B. For a more detailed discussion of groundwater sampling, see the Soil Suitability Study. Nitrate was above the potable limit in one irrigation well and four domestic wells. There are multiple j sources with the potential to degrade the groundwater in the vicinity of the dairy facility. The dairy operation has been an intensive agricultural/farming area for many years. Many of the neighboring properties use commercial fertilizers for their crops. Vineyards and orchards using commercial fertilizers and chemicals commonly have run-off& penetration of groundwater. Based only on the test results from these wells and the fact that we are not sure from what depths or from what aquifer the domestic water samples have been pumped from, it can only be concluded that the groundwater nitrate levels in the general area are impacted. See Page 47 for References and Bibliography Q Western Dairy Design Associates, Inc.2003 F; a Page 32