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Res 2008-083
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Res 2008-083
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Last modified
10/14/2008 3:40:45 PM
Creation date
6/24/2008 10:34:47 AM
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City Clerk
City Clerk - Document
Resolutions
City Clerk - Type
Agreement
Number
2008-83
Date
6/17/2008
Volume Book
176
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importance will be the pressure generated by the smoke machine. It is recommended that only high <br />. capacity smoke blower machines that generate approximately 4,500 cubic feet per minute (cfm) of <br />air be used for testing. In order to identify defects in the lines, the non-toxic smoke will be forced <br />into the sewer. Breaks in the sewer will allow the smoke to escape. Normally one line segment <br />upstream and downstream of the manhole will be tested at one time. Smoke testing will identify <br />inflow sources and most restrictive conditions within sewer lines. <br />Field documentation of the defects is extremely important and will include sketches of each system <br />defect along with pertinent information for prioritizing the defects. Data documentation will be <br />sufficient to establish the exact location of each defect and determine the best repair method. Color <br />photographs will be taken to document each defect during the smoke test. The location of the defect <br />will be determined by measurement from permanent objects (corner of house, power pole, etc.). The <br />data collected in the field will be computerized using an industry standard database format so that <br />the defects identified can be readily listed by priority for subsequent repair. Additionally, smoke <br />testing information will be used to generate a list of line segments that require internal TV <br />inspection. <br />Public Relations Program <br />Public relations will be very important during all phases of the project, but to an even greater extent <br />during smoke testing. Each resident will be notified prior to testing by use of door flyers. For large <br />facilities, such as schools or hospitals, a log will be maintained that will document the property <br />manager's notification of planned smoke testing activities. A local telephone number will be <br />provided for those individuals with questions or for anyone requiring special assistance. Each day <br />the fire department will be notified of the crew location since smoke may enter homes through <br />defective plumbing. A public relations program normally includes the utilization of the local <br />newspaper and TV to expand the community's knowledge of the efforts being made to correct <br />system defects and thereby minimize treatment costs. <br />Internal Cleaning and TV Inspection <br />Internal color television cameras will be used to visually establish the pipeline conditions as the <br />camera is propelled through the pipeline. Prior to internal inspection, an interim TV report will be <br />prepared to summarize any lines recommended for inspection along with the reason for the proposed <br />inspection. Any structural problems or defects contributing to I/I will be digitally recorded on DVD <br />along with a detailed log maintained in the project database. Internal inspection of specific sewer <br />lines will determine the best repair options which in turn will reduce overall project costs. <br />Dye water testing can be anticipated to assist in the location and quantifying of specific defects <br />during the internal television inspection. Non toxic dye may be introduced as a powder or liquid to <br />assist in the field effort. Casting/Cone connections may be dye tested to determine the potential <br />severity and exact location of the source of wet weather inflow. Cross-connections, roof drains and <br />area drains that are suspected of being connected to the sanitary sewer will be positively identified <br />using the dye tracer procedure. Field documentation and photographs will be used to record all <br />findings. CCTV data will be coded using the national PACP codes. <br />Rehabilitation Plan and Final Report <br />All inspection forms, photographs and sketches taken during the field investigation efforts will be <br />provided as documentation. Each system defect will be prioritized and sorted by repair method. An <br />
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