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In general, the study approach will include the following: 1. Determine the top elevation of the ground water relative to the ground level and bottom of leaching trenches throughout the study area. 2. Determine source of high ground water. 3. Sample wells for pollution, contamination and possible toxic contamination of the ground water. 4. Based on 1-3 above determine effect of sewage treatment and disposal by septic tank treatment and leaching line disposal. 5. If appropriate, develop methods of improving the ground water quality through management practices that will result in meeting established ground water quality goals and protect the public health. 6. Prepare cost estimates for alternative plans. 7. Prepare a financial plan and recommended work schedule for protecting the area's ground water, provide improved sewage treatment and disposal, and provide a safe water supply for local residents. B. Statement of the Problem It is believed that the Santos Ranch/Currier Estates area is under laid with ground water that is to near the surface for providing adequate treatment and disinfection. In addition, the ground water pumped from the aquifer has very high concentration Nitrate (NOO and total disolved solids. In additon, biological contamination is suspected. The nitrate levels measured at concentrations of 69 to 90 mg/1 may be due to natural conditions, agricultural fertilization, recycled wastewater or other unknown sources. The high total disolved solids, 1000 to 1500+mg/l is probably due to some extent to natural conditions and may be aggravated by recycling of sewage effluent. If the problem is not addressed, conditions may become more adverse to public health or become progressively worse to the extent that the drinking water aquifer is lost for a period of time. It is thought that most of the study area is so effected, down gradient lands and ground water off site are probably also effected to a lesser extent. -3-