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During the baseline survey, barometric pressure readings and water levels will be monitored in the pumping and observation wells. Monitoring will be performed using 5 and 10 pounds per square inch (psi)pressure transducers and Hermit Dataloggers. 2.3 Task 3 —Step-Discharge Test A step-discharge test will be conducted to assess the optimum pumping rate for conducting the constant-discharge pumping test. The step-discharge test will be performed by incrementally increasing the pumping rate after approximately 60 minutes of pumping. A maximum of four steps are anticipated. The step-discharge test will be based on the results of the well development logs. For example, if the development data indicates that the well may dewater at 8 gallons per minute("gpm"),the step test will be conducted at pumping rates of 2, 4, 6, and 8 gpm, each for a duration of approximately 60 minutes. Alternatively, if at 8 gpm, there is little drawdown in the test well during development, the step test may be conducted at pumping intervals of 10, 20, 30, and 40 gpm. The well development records will provide preliminary information for sizing the pumping test and determining equipment needs, such as pump size and water storage capacity. The step-discharge test will be performed using a submersible pump connected to a flow meter at the end of the pump discharge line. Water level monitoring will be performed using pressure transducers and Hermit Data Loggers. A 10-psi transducer will be placed approximately 2 to 3 feet above the pump intake. Water level measurements in the nearby monitoring wells will be conducted using 5 or 10-psi transducers. Adjusting the opening of the ball valve in line with the flow meter shall make changes to the pumping rate. 2.4 Task 4—Constant-Discharge Pumping Test The constant-discharge pumping test will be conducted in the proposed aquifer test well for duration of approximately 24 to 72 hours. The actual duration of the test will be determined in the field based on the measured draw down in the pumping and observation wells, discharge rate, and other field observations. During the test,water levels will be monitored frequently in the pumping well and nearby shallow aquifer monitoring wells with the use of pressure transducers and Hermit dataloggers. The data logger will be programmed to collect the following data: • The first three minutes of the test,water levels will be monitored every 30 seconds • From 3 to 15 minutes every minute • From 15 to 60 minutes every 5 minutes • From 60 to 120 minutes every 10 minutes • From 2 to 10 hours every 30 minutes • From 10 to up to 72 hours every 100 minutes Ripon Farm Services,Inc. 2 of 4 Aquifer Testing Work Plan July 2009