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F. The Contractor shall make all arrangements necessary with an <br /> independent commercial laboratory approved by the Department of <br /> Environmental Health for the collection and examination of samples of <br /> water from disinfected water mains. Note: The Contractor may not collect <br /> his own samples. These samples shall be examined for compliance with <br /> the Department of Environmental Health's and Florida Department of <br /> Environmental Protection's requirements. Sampling shall be made daily <br /> and continuously until two successive examinations are found <br /> satisfactory. Should one examination be found unsatisfactory, the line <br /> shall be flushed and disinfected again. Certified copies of all laboratory <br /> analyses shall be provided to the IRCDUS. The cost of all sampling, <br /> flushing and disinfecting shall be included in the contract price. IRCDUS <br /> personnel shall operate all valves and be present to determine and <br /> control the volume of water used for flushing. <br /> TABLE 10— 1 <br /> Chlorine Required to Produce a 25-mq/L Concentration in 100ft of Pipe by <br /> Diameter <br /> 1-percent <br /> Pipe 100-percent Chlorine <br /> Diameter Chlorine Solution <br /> (inches) (pounds) (gallons) <br /> 4 0.013 0.16 <br /> 6 0.030 0.36 <br /> 8 0.054 0.65 <br /> 10 0.085 1.02 <br /> 12 0.120 1.44 <br /> 16 0.217 2.60 <br /> For Pipes larger than 16-inches in diameter see <br /> AWWA Standard Specifications C-651-99 <br /> 13.04 TESTING OF GRAVITY SEWERS <br /> A. Leakage test by exfiltration and infiltration, as described below, shall be <br /> made on all pipes. <br /> B. Exfiltration tests shall be made on all pipes after backfilling. All sewers <br /> shall be tested such that water is filled to the rim of the lowest manhole <br /> being tested within each section being tested, as directed by the <br /> IRCDUS. Mechanical plugs shall be used on the gravity sewer system in <br /> such a manner that the air can be released from the sewer while it is <br /> being filled with water. The test shall be continued for one hour and <br /> provisions shall be made for measuring the amount of water required to <br /> maintain the water at a constant level during this period. If test results are <br /> unsatisfactory, the Engineer and/or IRCDUS may direct that additional <br /> test be made on any section or the entire pipe. <br /> 13 - 4 <br /> t �3. �1•S. <br />