4-Year Section Cleaning Program 05-09

Wastewater Field Operations

(Summary)

12/30/07

The 4-Year Section Cleaning Program is a pro-active approach designed to clean, inspect and repair city owned sewer mains 8” to 18” inches in diameter. Data obtained from the crews while cleaning in the various sections assist the department in developing Cured in Place Pipe Projects, Chemical Root control, Point Repairs, Capital Improvement Projects and system assessment.

The Collection System Division began the 4-Year Section Cleaning Project on March 16, 2005 and completed the program on December 13, 2007. It took the staff a total of 33 months to complete. The program was completed 15 months ahead of schedule. The following is a summary of work completed:

· 36 Section Area’s completed

· 1,787,118 feet cleaned

· 338.43 miles cleaned

· $230,687.42 total cost of labor/equipment without benefits: $0.12 per foot

· $266,751.74 total cost of labor/equipment  benefits: $0.14 per foot

· Cost comparable if contractor completed at $1.50 pf: $2,680,677.00

The program has proven to be very successful and is an example how a pro-active approach to system maintenance improves reliability and customer service. The department has seen a reduction in city main blockages (see attached graph), assets are being inspected and plotted with GPS and city main defects have been found and corrected. As a 2007 Performance Measure, the division targeted a 5% reduction in city main blockages. There is a 19% reduction in city main blockages to date in 2007.

Another critical component of the program includes the TV Inspection follow-up work. Through TV Inspection, we are assuring the city mains are cleaned thoroughly, finding/repairing city main defects and finding defects on the private side (customer service connections). On the private side, customers are notified of the defects which include including digital pictures and locations.

With the success of the Section Cleaning program, the department will restart the program January 2008.

Bob Brower

Wastewater Field Operations Manager

2005-2009 SECTION CLEANING COMPLETED MAP

                                                                                                22-1219 23-1219              24-1219          19-1220                20-1220                                              

COMPLETED        COMPLETED      COMPLETED  COMPLETED     COMPLETED            

109/2007 09/2007                          09 / 2007           10/2007             11/2007               

28-1219 27-1219             26-1219                  25-1219            30-1220              29-1220                 

                                                        COMPLETED     COMPLETED     COMPLETD       COMPLETED         COMPLETED      COMPLETED

10/2007  08/2007                 07 /2007               10 /20 06            11/2007            11/2007

                                32-1219                                33-1219                                34-1219                                35-1219                            36-1219         31-1220                      32-1220

                           COMPLETED          COMPLETED          COMPLETED     COMPLETED             COMPLETED    COMPLETED            COMPLETED

09/2007                                08/2007                                05/2007                                03/ 2007       11/ 2006                       08/ 2006     08 / 2006

                                05-1319                          04 – 1319              03 – 1319               02 – 1319              01-1319              06-1220               05-1220              04-1320           03-1320

                                COMPLETED   COMPLETED          COMPLETED           COMPLETED       COMPLETED        COMPLETED         COMPLETED       COMPLETED          COMP.

                                12/2007                           07 / 2006             06/ 2006               04/ 2006                11/2005             12/2005               05/2005              11/2007            11/07

                                                                    09-1319            10-1319                                11-1319                                12-1319                         07-1320                   06/2005                    09-1320

                                                                COMPLETED     COMPLETED         COMP{LETED      COMPLETED         COMPLETED       COMPLETED          COMPLETED

                                                       08/2006                         07/2006                                03/2006                           08/2005             12/2007            06/2005              11/2007      

                                                                                                                                14-1319                                13-1319

                                                                                                                            COMPLETED       COMPLETED

05/2006                                08/2006