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Home My WebLink About19. Ratify General Manager's actions to perform emergency repairs to a damaged force main in Orinda Page 1 of 9 Item 19. CENTRAL SAN BOARD OF DIRECTORS POSITION PAPER MEETING DATE: NOVEMBER 19, 2020 SUBJECT: RATIFYTHE GENERAL MANAGER'S ACTIONS UNDER PUBLIC CONTRACT CODE SECTION 22050 AND RESOLUTION 2020-002 TO DIRECT DISTRICT FORCES AND MOUNTAIN CASCADE INC. TO PERFORM EMERGENCY WORK AND REPAI R A 30-1 NCH DIAMETER FORCE MAIN LOCATED ON BATES BOULEVARD IN ORI NDA SUBMITTED BY: INITIATING DEPARTMENT: SASHA MESTETSKY, SENIOR ENGINEER ENGINEERING AND TECHNICAL SERVICES- CAPITAL PROJECTS REVIEWED BY: PAUL SEITZ, COLLECTION SYSTEM OPERATIONS DIVISION MANAGER EDGAR J. LOPEZ, CAPITAL PROJECTS DIVISION MANAGER JEAN-MARC PETIT, DIRECTOR OF ENGINEERING AND TECHNICAL SERVICES Roger S. Bailey Kenton L. Alm General Manager District Counsel ISSUE A Declaration of an Emergency by the Board is required for the General Manager to perform emergency repairs under Public Contract Code 22050. BACKGROUND On November 10, 2020, a PG&E contractor"Charge EPC" was doing underground work along Bates Boulevard in Orinda. While excavating to install a vault, they hit one of the two active force mains (FMs) used to deliver wastewater from the Orinda Crossroads Pump Station (Crossroads)with an excavator. Collection System Operations (CSO) staff was contacted and arrived promptly on-site with bypass pumps, November 19, 2020 Regular Board Meeting Agenda Packet- Page 144 of 152 Page 2 of 9 vacuum (vac)trucks, and other needed equipment. Crossroads is equipped with two parallel FMs, an 18-inch and a 30-inch diameter pipeline, which conveys wastewater from downtown Orinda over the hill towards Lafayette and into the gravity sewer system. Operations staff had both FMs in operation at the time of the incident in preparation for the wet weather season, typically done this time of year. The FM damage was determined to be the 30-inch cement lined and coated steel pipeline. The hole created by Charge EPC's excavator resulted in a sanitary sewer overflow into the street and nearby storm drain until CSO staff was able to stabilize the break and overflow. CSO staff estimated the overflow to be approximately 20,000 gallons. CSO staff worked to control the back flow to empty the pipe so they could reach the damaged area, which was submerged in mud. The flow and area was secured by the evening of November 10, 2020. The flow from Crossroads was pumped using the 18-inch FM. No further overflow occurred after that time. The General Manager issued an emergency declaration the afternoon of November 10, 2020. Staff contacted East Bay Municipal Utility District to report the sewer overflow to the storm drain as it is upstream of the San Pablo Reservoir. Engineering staff worked to determine the extent of the damage and provide a repair solution or design. Two contractors currently working on Collection System projects, Cratus and Mountain Cascade Inc. (MCI)were contacted. After determining the best solution and permanent design for the repair, staff elected to use MCI for the work since they are currently working at Crossroads and the type of work is within their current scope of work. MCI welded a repair plate over the damaged area on November 12, 2020 and completed the work by the end of the day. The FM is scheduled to be tested on November 13, 2020, after which time it will be available for service. ALTERNATIVES/CONSIDERATIONS This repair had to be performed under an emergency procedure and therefore, could not be done using a traditional bid or informal process. The damaged 30-inch FM posed a significant environmental and safety issue, which needed to be addressed immediately. Staff is currently investigating the incident with the District's Risk Specialist and other divisions to determine any other findings for the incident. Although costs are believed to be under$200,000 and within the General Manager's authority for emergency actions, costs are still being developed and incurred by the District until this incident is fully resolved. FINANCIAL IMPACTS The total cost for the emergency work and repair is estimated to be under$150,000, which includes CSO staff response, engineering costs, MCI's repair costs, traffic control, and other staff costs. Staff has tracked all costs related to this incident and will charge these costs to an emergency contingency project in the Capital program under the General Manager's delegated authority for contingency projects below$200,000. COMMUNITY OUTREACH None. November 19, 2020 Regular Board Meeting Agenda Packet- Page 145 of 152 Page 3 of 9 COMMITTEE RECOMMENDATION This matter was not reviewed by a Board Committee. RECOMMENDED BOARD ACTION Ratify the General Manager's actions under Public Contract Code Section 22050 and Resolution 2020- 002 to direct District forces and Mountain Cascade I nc. to perform emergency work and repair on the 30- inch diameter force main located on Bates Boulevard in Orinda. Strategic Plan re-In GOAL ONE: Customer and Community Strategy 1—Deliver high-quality customer service, Strategy 2—Maintain a positive reputation GOAL FIVE: Infrastructure Reliability Strategy 3—Protect personnel and assets from threats and emergencies GOAL SEVEN:Agility andAdaptability Strategy 1—Maintain a safe working environment for employees and the public during the COVID-19 pandemic ATTACHMENTS: 1. Presentation November 19, 2020 Regular Board Meeting Agenda Packet- Page 146 of 152 Page 4 of 9 RATIFY THE GENERAL MANAGER'S I EMERGENCY DECLARATION FOR THE ORINDA CROSSROADS PUMP STATION 30-INCH DIAMETER FORCE MAIN REPAIR Board Meeting November 19, 2020 Paul Seitz Collection System Operations Division Manager Jean-Marc Petit Director of Engineering and Technical Services I 1 BACKGROUND • On November 10, 2020, Charge EPC, a PG&E contractor, was excavating on Bates Boulevard in Orinda. • Charge EPC hit the Central San 30-inch force main (FM)while excavating. • The 30-inch is one of two FMs that conveys sewage from the Orinda Crossroads Pump Station (PS). - • Operations isolated the 30-inch FM and directed all flow through the 18-inch FM that was not damaged. 314 rz 2 1 November 19, 2020 Regular Board Meeting Agenda Packet- Page 147 of 152 Page 5 of 9 LOCATION OF INCIDENT , 3 3 DAMAGE AND RESPONSE • Hole in 30-inch FM, which was pressurized, overflowed rfi, approximately 20,000 gallons. • Collection System Operations (CSO) crew used a bypass pump and a vacuum truck to control the back flow and pump it into a nearby sewer. 166ma A I VIV-1 �l I' a 4 2 November 19, 2020 Regular Board Meeting Agenda Packet- Page 148 of 152 l,f q �Y i EXPOSING THE DAMAGE AND SECURING THE SITE ON NOVEMBER 10, 2020 Y �s f z -- REPAIR NOVEMBER 12, 2020 Page 7 of 9 DECLARATION OF EMERGENCY ON NOVEMBER 10, 2020 • CSO notified the General Manager of the incident after 1 p.m. • General Manager immediately contacted the Director of Engineering and Technical Services. • CSO mobilized with a bypass pump and a vacuum truck. • Engineering went on-site to evaluate the damage and determine repair solutions and contact contractors. • Communications and Risk Management divisions were notified. • East Bay Municipal Utility District and City of Orinda were notified. 7 ACTIONS SINCE EMERGENCY DECLARED • Secured site and stabilized operations for repair. • Identified and hired Mountain Cascade Inc. to repair the FM on November 12, 2020. This work was completed by change order under an existing sewer renovation project. • Repair will be pressure tested on November 13, 2020. •All costs incurred being tracked by the District. • Investigating the incident with Risk Management and other groups at the District. _ CENTRALSAN 8 4 November 19, 2020 Regular Board Meeting Agenda Packet- Page 150 of 152 Page 8 of 9 PROJECTED COSTS • Total costs estimated to be less than $150,000, including: • CSO response; • PS Operations staff time; • Traffic control; • Fencing, bypass equipment, and other equipment costs; • Contractor repair (awaiting final invoice); • Engineering costs; and • Other staff time. 16 _ ` 9 9 RECOMMENDATIONS • Ratify the General Manager's actions under Public Contract Code Section 22050 and Resolution 2020-002 to direct District forces and Mountain Cascade Inc. to perform emergency work and repair a 30-inch diameter force main located in Orinda on Bates Boulevard. def-No 10 5 November 19, 2020 Regular Board Meeting Agenda Packet- Page 151 of 152 Page 9 of 9 QUESTIONS? CENTRALSAN 1 11 11 EMERGENCY DECLARATION SINCE LATE 2013 • Emergency Sludge Blending Tank: Declared: 5/20/14, pre- stressed concrete tank failure - safety related • Orinda Miner Road: Declared: 3/12/17 (damage caused by winter storm), 11/15/18 -Announcement all funds reimbursed by the Federal Emergency Management Agency and California Governor's Office of Emergency Services • Primary Sedimentation Tanks Rail Repairs: Declared: 8/3/17, done under contract change order to the Primary Treatment Renovation, District Project (DP) 7285 • Electrical for Filter PS and Substation 40: Declared: 11/13/18, done under contract change order to the Filter Plant and Clearwell Improvements, DP 7365 • Lower Orinda PS Variable Frequency Drives (VFDs) Failure: Declared: 1/16/20 • Orinda Crossroads PS 30-inch Force Main Damage: Repairs 11/10/20 l r 12 CENTRAL SAN12 6 November 19, 2020 Regular Board Meeting Agenda Packet- Page 152 of 152