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Draft Infiltration and Inflow Report March 1998
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Draft Infiltration and Inflow Report March 1998
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393 - Replace Flush Tank w/ Standard Manhole <br />Flush tanks, which were previously used to clean lines with a large flush of water, <br />were another unusual condition encountered. It is recommended that all flush <br />tanks be replaced with a standard manhole. <br />394 - Replace EOL, Tee, or Cleanout w/ Standard Manhole <br />It is recommended that manholes be placed at all ends of lines and at all junctions <br />between two or more mainlines, to facilitate inspection and reduce maintenance <br />costs. <br />395 - Replace Oval Frame and Cover w/ Standard Frame and Cover <br />The oval-shaped manhole frame and cover found on some brick is sub-standard <br />and requires replacement. The rehab code addresses replacing the cover and <br />frame with a standard round cover and frame. In a paved area, rehabilitation <br />entails removing pavement to gain access and excavation to remove the frame. <br />The new frame is sealed to the corbel or chimney, followed by backfilling and <br />pavement replacement. <br />84 - Unidentified Smoke Leak - Dye Test Required <br />Manhole defects found during smoke testing are typically characterized as either <br />frame defects, frame seal defects, chimney defects, cone defects, or wall defects. <br />There are instances, however, where the manhole appears to be in good condition <br />from physical inspection. These defects should be dye tested to determine the <br />exact nature of the problem, and the cost for this rehab code includes only the <br />cost to dye test. <br />ADS Environmental Services, Inc. <br />VI-16 <br />
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