FROM: Robert Thompson, General Manager
Originator: Riaz Moinuddin, Director of Operations & Maintenance
SUBJECT:
title
EMERGENCY DECLARATION FOR PLANT NO. 1 HEADWORKS PIPE REPAIR
end
GENERAL MANAGER'S RECOMMENDATION
recommendation
RECOMMENDATION:
Ratify approval of an Emergency Repair Sole Source Purchase Order to Jamison Engineering, Inc. for Sunflower Trunkline Pipe Emergency Repair, for an amount not to exceed $250,000.
body
BACKGROUND
On Tuesday, April 30, 2024, Sunflower Pump No. 2 failed. Sunflower Pump No.1 was already removed and sent off-site for refurbishment under a construction project. While staff was rerouting flows, water levels in the Sunflower Trunkline began to rise. The higher water levels pressurized a weakness in the top quarter of the pipe which is normally above the water level, causing the pipe to fail. Wastewater was discharged into the basement of the Metering structure, partially filling the room. Staff responded immediately by isolating the pipeline, bypassing the flow to Plant No. 2, and pumping wastewater from the basement into the Euclid Trunkline.
On Wednesday, May 1, 2024, the in-plant spill was contained and Jamison Engineering, Inc. was called to help assess the damage. The inspection by OC San engineers and Jamison identified an 18-inch-long by one-inch-wide hole in the pipe. Severe corrosion on the pipe and flange were noted. Due to the impact to the facility and the severe deterioration, OC San's General Manager and Board Chairman agreed that the repair of the damaged trunk line required emergency procurement under section 1.07 B of the Orange County Sanitation District's (OC San) Purchasing Ordinance No. OC SAN-61 and an emergency was declared.
After an internal inspection on Thursday, May 2, 2024, an estimated 60% of metal in the top half of the short piece of 84" pipe penetrating the wall was corroded away, jeopardizing the overall support for the pipe. This repair is approaching $250,000 for corro...
Click here for full text