1. Project Location: Mexicali, MX
2. Diameter of line, sewer pipe material (RCP, MCIP, brick, etc.), length of rehab portion: 6.56’ x 6.56’ Box RCP Combo sanitary and storm sewer, 150 LF test section
3. When was it constructed and how long has it been in service: Constructed in 1983, been in service for 30 years
4. Rehab method used: The Commission chose to use a spiral wound method using the Danby PL3 1” profile with a finished ID of 6’.
5. Cleaning method used (if required) and who cleaned the line: Hydro-blasting with 5K to 8K psi water pressure, self-performed by Contractor, SOLSUB Constructors from Tijuana, Baja California, Mexico partnering with TES, Inc. of Tecate, CA
6. Method of flow bypass or diversion, if used: A weir was built and (2) internal bypass pipes installed.
7. Depth of pipe: 20’
8. Depth of ground water: N/A.
9. Ventilation and odor control used: Forced air was supplied
10. Construction cost (total amount and cost per foot): Unknown
11. Month and year of start-up and end of construction: 10-2013, 3 Weeks
13. Problems encountered after construction: One of the challenges came when a separate contractor working upstream of the rehab section had to pull their plug, releasing the flow every 4th day. Proper notifications were given 3 hours in advance of the flow release giving the crews working downstream an opportunity to secure the work area and evacuate. Once the plug was reinstated, it took approx. 3 hours to clean up and proceed with the installation.
14. Health and safety: None.
15. Has any re-inspection been performed? No