DATE: 03/04/2026
TO: Honorable Mayor and City Council Members
Honorable President and Board Members
FROM: Utilities Department
2026-75
REQUEST FOR CITY COUNCIL AND
CORONA UTILITY AUTHORITY ACTION
SUBJECT:
EMERGENCY SEWER MAIN LINE AND PARKING LOT REPAIRS AT 3915 GREEN
RIVER ROAD
EXECUTIVE SUMMARY:
This staff report is to notify the City Council of contracted emergency repairs for a sewer main line repair that runs through the property at 3915 Green River Road.
RECOMMENDED ACTION:
That the City Council receive and file the notification of contracted emergency sewer main line and parking lot repairs at 3915 Green River Road.
That the Corona Utility Authority review, ratify, and to the extent necessary, direct the City Council to take the above actions.
BACKGROUND & HISTORY:
During a routine preventive maintenance inspection on December 5, 2025, the Utilities Department (UD) identified required repairs on a sewer main line situated behind the commercial property located at 3915 Green River Road. UD, in coordination with our Sewer Main Rehabilitation Services contractor, Sancon Technologies (Sancon), developed a plan that included installing Cured-In-Place Pipe (CIPP) to complete the repair. UD and Sancon initiated the scheduled maintenance project on February 11, 2026.
During pre-lining preparation of the pipe, which included hydrowashing, a preconstruction Closed-Circuit Television (CCTV) inspection, and other setup activities, the pre-inspection video showed that the liner was failing and that dirt was collapsing into the sewer line due to severe corrosion. Sancon confirmed advanced corrosion at the crown of the existing 10-inch ductile iron pipe and that the exterior liner was actively collapsing into the line after hydrowashing, and recommended terminating hydrowashing to prevent further collapse of the pipe. After further analysis and confirmation that soil was pressing the exterior liner in, it was determined that a 55-foot segment of pipe was too damaged to complete CIPP lining, and immediate pipe replacement of the affected segment would be required.
The severity of the damage presented an imminent risk of a total sewer main collapse, particularly given the forecasted rainfall for the following week. This degradation required an immediate emergency response to prevent potential sewer overflows and environmental contamination. Due to the technical requirements of the repair, which involved excavating to approximately 30 feet, UD’s contractor required significant working space for heavy machinery and material transport. Consequently, these essential operations fully restricted access to the CubeSmart Self Storage facility, from the afternoon of Wednesday, February 11, 2026, through Sunday morning, February 15, 2026.
ANALYSIS:
Due to the emergency nature of the situation, staff contacted one of the City’s On-Call Contractors, Augustine General Engineering, Inc., who is experienced in sewer main repairs and equipped to respond to a repair and excavation of this magnitude. Augustine General Engineering. Inc. was selected based on their immediate availability, ability to mobilize resources, possession of the proper excavation equipment, and experience with similar emergency repairs at this depth and proximity to the railroad tracks. The scope of work was as follows:
Trenched 5- to 8-feet wide, 28- to 30-feet deep, and 50- to-60 feet long to access the damaged 10-inch Ductile Iron Pipe Gravity Sewer Main Line Installed approximately 55 linear feet of 10-inch SDR-35 sewer pipe Removed and reinstalled an 18-inch Storm Drain concrete lateral Placed 60-Tons of gravel
Backfilled the excavated area with 550- to 600-tons of Class II Base Placed 15-tons of temporary asphalt cold mix
Sancon conducted a CCTV reinspection of the new main line and installed CIPP lining per their original scope for the remaining sections of the line, thereby ensuring the structural integrity and proper flow of the sewer main in that area. Augustine General Engineering, Inc., placed temporary asphalt, and UD will be requesting quotes for the final trench pavement restoration. RE Chaffee Construction, Inc., will haul away the project spoils, which were temporarily stored on City property near Palisades and Green River Road.
UD will bring forth, at a future City Council meeting, details regarding the costs incurred for the repair of the sewer main, remediation, and restoration, including detailed cost information for labor, materials, and equipment.
BASIS FOR EXCEPTION TO COMPETITIVE BIDDING:
An exception to competitive bidding was warranted for this action pursuant to Corona Municipal Code (CMC) Section 3.08.130(A) which states as follows:
(A) Emergencies. In situations determined by the City Manager to constitute an emergency for a public project pursuant to § 22035 of the Act and Cal. Public Contract Code § 22050. The City Council hereby delegates to the City Manager the power to declare a public emergency and take any directly related and immediate action required by the emergency, up to a total of $500,000, pursuant to § 22035 of the Act and Cal.
Public Contract Code § 22050. Emergency expenditures of more than $500,000 shall first be approved by the City Council. Work shall be performed without the benefit of competitive bidding, either formal or informal, only so long as necessary under those sections.
For projects of more than the amount provided for in § 22032(a) of the Act (currently $75,000), a report on the emergency and work performed shall be provided at the next regular meeting of the City Council, and then at every meeting thereafter required by § 22050. At such meetings, the City Council shall determine, by a four-fifths vote, that there is a need to continue the action without the benefit of informal or formal competitive bidding in accordance with § 22035 of the Act and Cal. Public Contract Code § 22050.
The City Council shall terminate the emergency action at the earliest possible date that conditions warrant, so that the remainder of the emergency action may be completed pursuant to a formal bidding procedure.
Staff believes this situation meets the definition of an emergency, as the immediate repair of the damaged sewer main line and parking lot repairs at 3915 Green River Road were essential to prevent a sanitary sewer overflow and to restore the affected parking lot as soon as possible, limiting the impact to the business.
FINANCIAL IMPACT:
Funding for the recommended action is available in the Sewer Line Infrastructure Operating and Maintenance Project No. 71950 within the Sewer Utility Fund 572.
ENVIRONMENTAL ANALYSIS:
This action is categorically exempt pursuant to Section 15302 (c) of the Guidelines for the California Environmental Quality Action (CEQA), which states that “operation, repair, maintenance, permitting, leasing, licensing, or minor alteration of existing public or private structures, facilities, mechanical equipment, or topographical features, involving negligible or no expansion of use beyond that existing at the time of the CEQA determination” and is therefore exempt from CEQA. This action involves repairs to existing infrastructure to maintain public health and safety. Therefore, is exempt from the requirements of CEQA, and no environmental analysis is required.
PREPARED BY: ERIN KUNKLE, MAINTENANCE MANAGER
REVIEWED BY: TOM MOODY, UTILITIES DIRECTOR