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Provide two electrical depth gauges capable of indicating changes in water level to the nearest 1110 foot Provide assistance to Engineer for supplemental measurements when ' required 2 02 PERSONNEL Provide qualified personnel during both the step drawdown and long-term pumping tests to operate the pumping test equipment PART 3 - EXECUTION 3 01 TESTING SCHEDULE ' After well development with the test pump is complete, commence the well pumping tests Schedule all tests sufficiently in advance per Division 11, Section 36, so that the Engineer can be onsite throughout each testing period 1 3 02 STEP DRAWDOWN TEST A For this well test, operate the pump initially at a rate of approximately 1500 gpm The pumping rate will then be increased by 500-gpm increments at uniform two- hour intervals until the well has been tested at approximately 3000 gpm 1 B During the test, the Contractor will record the time, pumping level, discharge rate, and rate of sand production See Part 3 04 of this section for recording instructions fie 3 03 LONG-TERM PUMPING TEST A A long-term, continuous, constant rate, time-drawdown test shall commence not ' less than 24 hours and not more than 48 hours after the completion of the step drawdown test The rate of pumping shall be between 2000 and 3000 gpm and shall be determined by the Engineer The Contractor shall ensure that the pumping rate selected remains constant throughout the test The test duration shall be 24 hours or of a duration that will result in a straight line plot of at least four consecutive measurements of water level drawdown when plotted against ' the logarithm of elapsed time However, the test shall not be less than 12 hours in length When the test is completed and pump stopped, the Contractor shall measure recovery of the water level in the well for a period of approximately 8 ' hours See Part 3 04 of this section for recording instructions B During the long-term test if the rate of water pumped falls below or above the designated flow by 5% or more for a period of greater than 15 minutes, discontinue the test until the water level in the well recovers and stabilizes Repeat the test No payment will be made for the mcompleted test C One hour prior to the completion of the 24 hour, constant rate, pumping test, the Contractor shall retain the services of a State-certified laboratory to collect, preserve, transport, and conduct water quality testing on a water sample ' Conduct water quality testing in accordance with Chapter 15 of the California Code of Regulations, Title 22 "Domestic Water Quality and Monitoring" (Revised September, 1994) August 2001 Division Ill -32 Ball Park& Park& Ride Wells Ph 1