Res 2011-140 - Laserfiche WebLink

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Provide listing of manholes that were located by field crews, but were not opened due to deterioration of the manhole cover and ring, etc. Provide listing of manholes that were buried more than 4 inches deep in grass and /or dirt or more than 1 inch deep in asphalt Assumptions: A maximum of 141,963 linear feet of sewer mains will be inspected without request for additional compensation. ENGINEER will provide prompt notification to the City of field conditions that could cause damage to persons or property. The entire collection system in the study areas will be inspected during this field task and all subsequent field tasks. Weekly notification to the City will be made regarding manholes that could not be located or opened. Required from Others: The City will provide assistance in locating and opening existing manholes, cleanouts, and access devices as required. Deliverables: Electronic and hard copy deliverables provided in Task 13 — Draft Report. The report will provide tabular listings of system assets and the approximate linear footage between manholes, cleanouts, etc. Task 3 — Below Ground Physical Inspection This task consists of opening manholes, examining the interior and inspecting each sewer line entering and leaving the manhole. The sewer lines will be inspected by use of manhole camera designed for inspection of sewer lines from the ground surface or descending into the manhole, when necessary. Photographs will be taken of the top of the manhole, the interior, and of all moderate to severe defects. Information gathered during this work, including photographs, will be provided to the City in electronic and hardcopy formats. The following data will be recorded for each manhole inspected: • Manhole identification number • Construction materials and conditions of cover, ring, walls, steps, bench, and invert • Manhole depth (in feet) • Number and size of holes in manhole cover • Infiltration sources • Evidence of leaks and location • Level of high water mark in the manhole, if present • Type and depth of debris, if present • Special problems and conditions such as: sources of inflow; evidence of overflows; unauthorized bypass pipes; and manholes located in natural ponding areas, etc. • Structural Defects, if any, will be noted The following data will be recorded for each line segment inspected: • Length, size, material and depth of pipe • Root growth in pipe, if any • Depth of flow • Type and depth of deposition in pipe, if present • Visible inflow /infiltration sources • Structural condition of pipe, including joints • Special problems and conditions in pipe • Inspect all mainline cleanouts Assumptions: A maximum of 414 manholes and mainline cleanouts will be inspected without request for additional compensation. ENGINEER will provide prompt notification to the City of field City of San Marcos, Texas Portions of Basins 10 Assessment Page 2 Project Work Plan 11/8/2011