Res 2011-140 - Laserfiche WebLink

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conditions that could cause damage to persons or property. All manholes and mainline cleanouts in the study area located or made accessible under Task 2 shall be inspected. Required from Others: The City will provide assistance in locating and opening existing manholes, cleanouts, and access devices as required. The City will provide access to all system appurtenances in the study area. Deliverables: Electronic and hard copy deliverables provided in Task 13 — Draft Report. The report will provide tabular and graphical listings of inspected system assets, location and type of defects, and system asset construction materials. Both hardcopy and electronic formats shall be provided. The electronic data shall be in Microsoft Access 2007 format. Task 4 — Smoke Testing Smoke testing shall be completed on the entire collection system identified during Task 2. Harmless smoke will be introduced into the sewer system using air blowers having a minimum rated capacity of 4,000 CFM. Smoke testing shall be conducted under dry weather conditions to allow the maximum detection of inflow and rainfall responsive infiltration sources. Notification of residences and businesses shall be made 24 hours prior to smoke testing. During smoke testing, the proximity of the collection system to storm sewers, creek crossings, drainage paths and ponding areas will be noted. Digital photographs of every smoke leak found will be taken and GPS coordinates of the leak location collected and electronically attached to the field forms. Smoke testing data collected in the field will include: • Upstream /downstream manhole number • Length of sewer line • Ground cover over line segment • Leak location from two known reference points • Degree of smoke observed • Leak location relative to drainage paths /ponding areas • Storm sewer crossings or cross connections • Classifications of leaks as: - Main line - Manhole - Public service line - Private service line Smoke testing may be used to facilitate other tasks as required Assumptions: Based on available GIS and as -built maps, there are an estimated 141,963 LF of wastewater collection lines in the designated study areas to be tested without request for additional compensation. The data recorded for each smoke test shall be recorded in Microsoft Access 2007 format to facilitate data upload to the City's Information Management System. All City smoke testing procedures shall be followed. Surcharged pipelines, pipelines with sags and /or blockages shall be reported to the City on a weekly basis. ENGINEER will provide immediate notification of field conditions that could cause damage to persons or property. Any public meetings, if required for this project, should be conducted before the smoke testing operations begin. Required from Others: The City will provide assistance in locating and opening existing manholes, cleanouts, and access devices as required. The City will provide access to all system appurtenances in the study area. The City shall provide listings of persons to be notified on a daily basis of work locations during smoke testing. Typical persons receiving daily notification are the City of San Marcos Fire Department and the City's project manager. The City shall provide City of San Marcos, Texas Portions of Basins 10 Assessment Page 3 Project Work Plan 11/8/2011