Motherlode Forcemain Replacement Program - El Dorado Irrigation District

The Motherlode force main (MLFM) was originally constructed in 1977 and conveys wastewater from the El Dorado lift station approximately nine miles west to the Deer Creek Wastewater Treatment Plant. Six additional lift stations pump directly into the force main as well as several private lift stations. The MLFM was originally constructed with 12-inch asbestos cement pipe and has several peaks and valleys as it progresses through the terrain. As wastewater is pumped over the peaks in the force main, the high points regularly become empty and are susceptible to high levels of hydrogen sulfide gas corrosion. The long term impact of hydrogen sulfide gas exposure is varying levels of degradation in the pipe. To date, approximately 50% of the forcemain has been replaced with larger diameter, plastic pipe. This project will replace approximately 3.3 miles of existing 12-inch asbestos cement pipe with 18-20-inch plastic pip As of June 29, 2023, construction commenced on May 30, 2023. All trades have been awarded. *This project has been awarded and all trades have been let.

Division 03 -	Concrete.
Division 04 -	Masonry.
Division 05 -	Metals.
Division 06 -	Wood, Plastics, and Composites.
Division 07 -	Thermal and Moisture Protection.
Division 08 -	Openings.
Division 09 -	Finishes.
Division 10 -	Specialties, Signage, Toilet, Bath, and Laundry Accessories, Fire Protection Specialties, Fire Extinguishers, Storage Specialties.
Division 11 -	Equipment.
Division 12 -	Furnishings.
Division 14 -	Conveying Equipment, Scaffolding.
Division 21 -	Fire Suppression.
Division 22 -	Plumbing.
Division 23 -	Heating, Ventilating, and Air Conditioning (HVAC).
Division 26 -	Electrical.
Division 27 -	Communications, Data Communications, Voice Communications, Audio-Video Systems.
Division 28 -	Electronic Safety and Security.
Division 31 -	Earthwork.
Division 32 -	Exterior Improvements, Fences and Gates, Turf and Grasses.
Division 33 -	Utilities, Common Work Results for Utilities, Instrumentation and Control for Utilities, Water Utilities, Water Utility Distribution Piping, Water Utility Distribution Equipment, Water Utility Pumping Stations, Disinfecting of Water Utility Distribution, Water Utility Storage Tanks, Wastewater Utility Pumping Stations, Sanitary Utility Sewerage Force Mains.
Division 40 -	Process Integration, Water Process Piping.
Division 45 -	Industry-Specific Manufacturing Equipment.
Division 46 -	Water and Wastewater Equipment.