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HomeMy WebLinkAbout04.b. Receive report on FY 2019-20 closeout of capital improvements projects Page 1 of 20 Item 4.b. CENTRAL SAN September 1, 2020 TO: ENGINEERING AND OPERATIONS COMMITTEE FROM: EDGAR J. LOPEZ, CAPITAL PROJECTS DIVISION MANAGER REVIEWED BY: PHILIP LEIBER, DIRECTOR OF FINANCE AND ADMINISTRATION JEAN-MARC PETIT, DIRECTOR OF ENGINEERING AND TECHNICAL SERVICES SUBJECT: RECEIVE REPORT ON FISCAL YEAR 2019-20 CLOSEOUT OF CAPITAL IMPROVEMENT PROJECTS Sixteen capital improvement projects were closed in Fiscal Year 2019-20. Attachment 1 lists the expenditures and budget under-run or over-run for each project. All expenditures are based on the pre- audit financial reports ending June 30, 2020. Attachment 2 contains a brief summary of the work completed under each project. For project budget details, please reference the information provided under the Financial Statements. Strategic Plan Tie-In GOAL ONE: Customer and Community Strategy 2—Maintain a positive reputation GOAL TWO: Environmental Stewardship Strategy 1—Achieve 100% compliance in all regulations GOAL THREE: Fiscal Responsibility Strategy 1—Maintain financial stability and sustainability GOAL FOUR: Workforce Development Strategy 4—Meet or exceed industry safety standards GOAL FIVE:Infrastructure Reliability Strategy 1—Manage assets optimally to prolong their useful life, Strategy 2—Execute long-term capital renewal and replacement program, Strategy 3—Protect personnel and assets from threats and emergencies ATTACHMENTS: 1. Expenditure Summary 2. Project Descriptions 3. Presentation September 1, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 19 of 40 Page 2 of 20 Attachment 1 Expenditure Summary Fiscal Year 2019-20 Closed Projects TREATMENT PLANT PROGRAM DISTRICT AUTHORIZED EXPENDITURES UNDERRUN PROJECT PROJECT TITLE BUDGET AS OF 6/30/20OVERRUN NO. 6/30/20 (OVERRUN) 7292 Switchgear Refurbishment- Phase 2 $ 884,548 $ 697,256 $ 187,292 7320 Plant Energy Optimization 1,094,000 1,004,919 89,081 7326 Equipment Replacement 1,629,000 1,642,109 (13,109) 7327 Headworks Screening Upgrade 8,305,000 8,415,231 (110,231) 7330 Piping Renovations- Phase 9 3,180,000 3,153,125 26,875 7358 Bioenergy Public-Private Partnership Project 300,000 271,217 28,783 7359 Solids Conditioning Building Roof Replacement 1,300,000 1,195,704 104,296 Program Totals $16,692,548 $16,379,561 $312,987 COLLECTION SYSTEM PROGRAM DISTRICT PROJECT PROJECT TITLE AUTHORIZED EXPENDITURES UNDERRUN No. BUDGET AS OF 6/30/20 (OVERRUN) 6602 South Jackson Contractual Assessment District $ 411,290 $ 406,481 $ 4,809 6603 North Jackson Contractual Assessment District 276,557 237,622 38,935 8441 Cured-in-Place Pipe Contract 2017-2020 600,000 281,214 318,786 8446 Lafayette Sewer Renovations- Phase 12 4,033,600 4,028,963 4,637 8452 Lafayette Sewer Renovations- Phase 13 4,317,000 4,288,123 28,877 8454 South Orinda Sewer Renovations- Phase 7 4,137,000 4,123,862 13,138 8455 Walnut Creek Sewer Renovations- Phase 13 4,121,000 4,064,860 56,140 Program Totals $17,896,447 $17,431,125 $465,322 GENERAL IMPROVEMENTS PROGRAM DISTRICT PROJECT PROJECT TITLE AUTHORIZED EXPENDITURES UNDERRUN No. BUDGET AS OF 6/30/20 (OVERRUN) 8249 Collection System Operations Dump Pad $60,000 $59,352 $648 RECYCLED WATER PROGRAM DISTRICT AUTHORIZED EXPENDITURES UNDERRUN PROJECT PROJECT TITLE BUDGET AS OF 6/30/20OVERRUN NO. 6/30/20 (OVERRUN) 7346 Recycled Water Surge Analysis $205,000 $159,525 $45,475 TOTAL EXPENDITURES $34,853,995 $34,029,563 $824,432 September 1, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 20 of 40 Page 3 of 20 Attachment 2 Project Descriptions Fiscal Year 2019-20 Closeouts TREATMENT PLANT PROGRAM Project No. Project Title 7292 Switchgear Refurbishment - Phase 2 This project is part of a multi-year program to repair and replace treatment plant electrical switchgear equipment including a total of 66 480 volt (V) circuit breakers over a five-year period; replaced 2400V circuit breakers and air breakers at key substations, such as Substations 52 and 82; and replaced the protective relays for various switchgear. Future replacement will be performed under the Plant Electrical Replacement and Rehabilitation project. 7320 Plant Energy Optimization The purpose of this project was to increase energy efficiency, reduce utility costs, and decrease carbon monoxide (CO) emissions at the treatment plant. There has been a significant increase in Pacific Gas & Electric Company costs due to CO emission limits imposed by the Bay Area Air Quality Management District on the cogeneration system (Cogen). Based on past utility bills, the yearly import increase was approximately $300,000. This project reduced CO emissions by installing an oxidation catalyst and increased Cogen's energy efficiency during hot weather months by adding an evaporative cooling system. These improvements have helped ensure regulatory compliance and reduced electrical costs. 7326 Equipment Replacement In coordination with the Asset Management Program, the Equipment Replacement project was part of a multi-year program to repair equipment throughout the treatment plant that reached the end of its useful life or required replacement or upgrade for various reasons. This project updated necessary critical equipment, such as pumps and impellers, various steam system and air conditioning components, small pump systems and generators, as well as other miscellaneous and essential support equipment. 7327 Headworks Screening Upgrade The Headworks separates and removes screenings (debris) and plastics from incoming wastewater. This important project improved the debris removal system in a strategic and cost- effective manner. These improvements included installation of four new fine multi-rake bar screens to replace the climber screens and grinders, a new screenings conveyance sluiceway, washer compactors, improved odor control, and an enhanced screenings disposal facility. Additionally, two of the existing climber screens and grinders were rebuilt and reinstalled in the Headworks wet weather channels for more operational reliability and process redundancy. 7330 Piping Renovations - Phase 9 The treatment plant has numerous piping systems throughout the site that convey wastewater, sludge, steam, air, and other utility services. The purpose of this project was to rehabilitate or replace piping that had been in operation for over four decades that were leaking or showing wear due to corrosion or other unseen factors. The work included, but was not limited to, replacement, renovation, and improvement of various mechanical, piping, instrumentation, and electrical systems throughout the treatment plant. It also included improvements to the treatment plant's domestic water system with the replacement of an air gap tank and enhancements to increase security and reliability. Page 1 of 3 September 1, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 21 of 40 Page 4 of 20 Attachment 2 Project Description Fiscal Year 2019-20 Closeouts 7358 Bioenergy Public-Private Partnership (P3) Project As part of the Comprehensive Wastewater Master Plan completed in 2017, and the early development of the Solids Handling Facility Improvements Project (Solids Project), Central San initiated this project to determine if an alternative solution could be found to process solids at the treatment plant. These alternatives included digestion, gasification, and other processes. This critical project confirmed the design outcome of the Solids Project and provided valuable information that will be useful in the future. The HYPOWERS (Hydrothermal Processing of Wastewater Solids) pilot will continue under a separate effort or project. 7359 Solids Conditioning Building (SCB) Roof Replacement Over the last several years, the SCB roof, originally constructed in the 1970s, started to experience significant leakage. Some leakage was over critical electrical equipment which, if failed, could have resulted in significant operational disruption and safety hazards. Although many repairs were made over the years, the roof was in poor condition and replacement was required. This project replaced the original tar and gravel roof with a membrane roof system, as well as flashing and sheet metal, installed new roof drains and piping, fall protection, and removed decommissioned exhaust stacks. COLLECTION SYSTEM PROGRAM Project No. Project Title 6602 South Jackson Contractual Assessment District (CAD) The purpose of the CAD projects is to provide a financing mechanism for the extension of public sewers into areas that had been served by septic tanks, which are cost neutral projects offset and paid for by the CAD participants. This background is for the South and North Jackson CAD projects completed this fiscal year. The South Jackson CAD, located in unincorporated Alamo, installed approximately 1,200 feet of 8-inch sewer and infrastructure to serve 22 properties. 6603 North Jackson CAD This project, also located in unincorporated Alamo, installed 1,150 feet of 8-inch sewer and infrastructure to serve 14 properties. 8441 Cured-in-Place Pipe (CIPP) Contract 2017-2020 This construction contract provided a cost-effective and expedient method over a two-year term to rehabilitate critical sewers within public rights-of way or easements using CIPP technology. The base of this project included ten sites and approximately 2,600 feet of sewer main, with the balance of the contract used for as-needed sewer rehabilitation in areas that posed a structural pipe failure, an imminent threat of pipe break or collapse, or a potential sewer system overflow as determined by staff. 8446 Lafayette Sewer Renovations - Phase 12 The Lafayette Sewer Renovations - Phase 12, and those subsequently listed below, are part of the ongoing sewer renovations within the Collection System Program. The project replaced 8,800 feet of sewer pipe, installed 24 new manholes and modified 11 existing manholes. Most of the project was located within the City of Lafayette, but also included several sites in the Town of Moraga. Page 2 of 3 September 1, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 22 of 40 Page 5 of 20 Attachment 2 Project Description Fiscal Year 2019-20 Closeouts 8452 Lafayette Sewer Renovations - Phase 13 The Lafayette Sewer Renovations - Phase 13 replaced an additional 11,230 feet of sewer pipe within the City of Lafayette and several sites in the Town of Moraga using various methods. The project also included the installation of 27 new manholes and modified 30 existing manholes. Of the total replacement lineage, 4,000 feet was replaced by the CIPP method. 8454 South Orinda Sewer Renovations - Phase 7 This project replaced or rehabilitated 9,330 feet of sewer mains, of which 6,000 feet was in relation to and coordination with the City of Orinda's paving program. The work also included the installation of 26 new manholes and modified 29 existing manholes and replaced one creek crossing. The project covered various neighborhoods throughout the city in the vicinity south of Highway 24. 8455 Walnut Creek Sewer Renovations - Phase 13 This project replaced or rehabilitated 8,660 feet of sewer mains, constructed manholes and other related work within public rights-of-way and easements, installed 36 new manholes, and modified 19 existing manholes. Most of the work in this phase was in the Walnut Knolls neighborhood within the unincorporated area of Walnut Creek and at several sites within the city limit. GENERAL IMPROVEMENTS PROGRAM Project No. Project Title 8249 Collection System Operations (CSO) Dump Pad The original CSO dump pad sloped towards the front of the truck, which was inefficient in unloading trucks and posed a safety risk. This project reconfigured the area for efficiency and safety by demolishing and regrading the previous site, then installed new concrete and improved drainage in the area. RECYCLED WATER PROGRAM Project No. Project Title 7346 Recycled Water (ReW) Surge Analysis The purpose of this project was to conduct pressure transient and surge analyses of the ReW distribution system during different operating conditions and to update the ReW distribution model. This project evaluated the size and optimization of the surge tank, pumps, and distribution system. It provided the opportunity to monitor and assess pressure in the distribution system, evaluate management of pressure transients, and update software modeling of the system. Page 3 of 3 September 1, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 23 of 40 Page 6 of 20 Attachment 3 FISCAL YEAR 2019-20 CLOSED CAPITAL PROJECTS Engineering and Operations Committee Meeting September 1, 2020 Edgar J. Lopez, PE Capital Projects Division Manager TOTAL EXPENDITURES BY CAPITAL PROGRAM Program Program Underrun Expenditures (Overrun) Treatment Plant $16,379,561 $312,987 Collection System $17,431,125 $465,322 General Improvements $59,352 $648 Recycled Water $159,525 $45,475 Total Expenditures: $34,029,563 $824,432 CE RAL SAN � Z 1 September 1, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 24 of 40 Page 7 of 20 TREATMENT PLANT PROGRAM CLOSED PROJECTS > $1 MILLION Project Project Title Expenditures Number 7320 Plant Energy Optimization $1,004,919 7326 Equipment Replacement $1,642,109 7327 Headworks Screening Upgrade $8,415,231 7330 Piping Renovations-Phase 9 $3,153,125 7359 Solids Conditioning Building (SCB) Roof $1,195,704 Replacement CENTRALSAN ` 3 PLANT ENERGY OPTIMIZATION, DISTRICT PROJECT (DP) 7320 Purpose: • Increase energy efficiency, on-site energy production, and decrease greenhouse gas emissions for the cogeneration (Cogen) system at the treatment plant Major Work Completed: • Installed a carbon monoxide (CO) catalyst • Installed an evaporative cooler system to the intake of Cogen for increased power production • Replaced the reverse osmosis water system and upgraded controls CENTRALSAN-- 2 September 1, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 25 of 40 Page 8 of 20 PLANT ENERGY OPTIMIZATION, DP 7320 New CO Catalyst ` 5 CENTRALSAN EQUIPMENT REPLACEMENT, DP 7326 Purpose: • Replace major and minor process equipment and related systems throughout the treatment plant in coordination with the Asset Management Program Work Completed: • Replaced process pumps • Replaced steam system equipment and components • Replaced valves and other mechanical items • Replaced instrumentation and equipment controls 6 CENTRALSAN 3 September 1, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 26 of 40 Page 9 of 20 EQUIPMENT REPLACEMENT, DP 7326 Replaced 3-Water Replacing Gate Pumps and Motors Actuator CENTRALSAN HEADWORKS SCREENING UPGRADE, DP 7327 Purpose: To separate and remove screening materials and plastics from the influent wastewater Major Work Completed: Replaced four climber screens with fine multi-rake bar screens Installed new washer compactors, sluiceway, and screenings handling facility Improved odor control for screens and new facility Repurposed two of the existing climber screens for redundancy and emergency operations 4 September 1, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 27 of 40 Page 10 of 20 HEADWORKS SCREENING UPGRADE, DP 7327 Screening Materials Unloaded to Bins f CENTRALSAN 9 PIPING RENOVATIONS - PHASE 9, DP 7330 Purpose: Inspect, rehabilitate, or replace piping and related mechanical systems at the treatment plant Work Completed: New potable water system upgrades and backflow prevention, includes air gap tank and piping Replaced the SCB earthquake valve and bypass piping Other miscellaneous process piping, instrumentation 6 and associated valves and systems 5 September 1, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 28 of 40 Page 11 of 20 PIPING RENOVATIONS - PHASE 9, DP 7330 i� e , � Y New Potable Water Tank for 5019 Imhoff Place Campus New SCB Earthquake Valve CENTRALSAN SCB ROOF REPLACEMENT, DP 7359 Purpose: • Replace the SCB roof, which has exceeded its useful life Work Completed: • Replaced the existing tar and gravel roof system with a membrane system compatible and built for industrial facilities • Removed existing and abandoned roof stacks and roof penetrations • Installed fall protection and replaced deteriorated mechanical and electrical items on the roof ,2 CENTRALSAN 6 September 1, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 29 of 40 Page 12 of 20 SCB ROOF REPLACEMENT, DP 7359 Before After ` 13 CENTRALSAN COLLECTION SYSTEM PROGRAM CLOSED PROJECTS > $1 MILLION Project Project Title Expenditures Number 8446 Lafayette Sewer Renovations-Phase 12 $4,028,963 8452 Lafayette Sewer Renovations-Phase 13 $4,288,123 8454 South Orinda Sewer Renovations-Phase 7 $4,123,862 8455 Walnut Creek Sewer Renovations- Phase 13 $4,064,860 14 CENTRALSAN 7 September 1, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 30 of 40 Page 13 of 20 LAFAYETTE SEWER RENOVATIONS - PHASE 12, DP 8446 Purpose: • Replace/renovate deteriorating and high maintenance sewers that have reached the end of their useful life Work Completed: • Installed/replaced a total of 8,800 feet of sewer mains by open-cut, pipe-bursting, sliplining, horizontal directional drilling, and cured-in-place pipe (CIPP) methods • Installed 24 new manholes and modified 11 existing manholes • Replaced collapsed PE slipline inside 30-inch steel pipeline with new HDPE on St. Mary's Road PE=Polyethylene Pipe HDPE=High-Density Polyethylene Pipe AO , CENTRALSAN Open Cut ►rase��:se -, 5 yl 116 CENTRALSAN 8 September 1, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 31 of 40 p � �` 811 x118,'EA 43 NONE ��=CD CENTRALSAN Removing Collapsed Liner ' New . - to O • PE Liner ^r S � CENTRALSAN • -• •- 1 1 0 *W67 MOM MKO; .•- • R1 Page 15 of 20 LAFAYETTE SEWER RENOVATIONS - PHASE 13, DP 8452 Purpose: • Replace/renovate deteriorating and high maintenance sewers that have reached the end of their useful life Work Completed: • Installed/replaced a total of 11,230 feet of sewer mains by open-cut, CIPP, and pipe-bursting methods • Installed 27 new manholes and modified 30 existing manholes • Located in easements and public rights-of-way ' 19 CENTRAL SAN - - -- _ 1 R Pipe Bursting � ■ri CENTRAL SAN f 20 10 September 1, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 33 of 40 Page 16 of 20 Easement Work 7 1 ` 21 CENTRALSAN SOUTH ORINDA SEWER RENOVATIONS - PHASE 7, DP 8454 Purpose: • Replace/renovate deteriorating and high maintenance sewers that have reached the end of their useful life Work Completed: • Installed/replaced a total of 9,330 feet of sewer mains by open-cut, CIPP, and pipe-bursting methods • Installed 26 new manholes and modified 29 existing manholes • Replaced one creek crossing • Located in easements and public rights-of-way 22 CENTRALSAN 11 September 1, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 34 of 40 :ve6 Tine 15v 15 Pf,xn a n,7si 5—.IN d4�.' pr CENTRALSAN r M ' . .. 1 �3 r 'rr S CENTRALSAN Page 18 of 20 Open Cut in Street - Amm Open Cut in Easement AftJ21 CENTRALSAN WALNUT CREEK SEWER RENOVATIONS - PHASE 13, DP 8455 Purpose: • Replace/renovate deteriorating and high maintenance sewers that have reached the end of their useful life Work Completed: • Installed/replaced a total of 8,660 feet of sewer mains by open-cut, CIPP, and pipe-bursting methods • Installed 36 new manholes and modified 19 existing manholes • Located in easements and public rights-of-way 26 CENTRALSAN -a -- 13 September 1, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 36 of 40 g f x 00. • it CENTRALSAN FAKSM CENTRALSAN -• •- 1 1 •' -• • • �•- •. .•- • it Page 20 of 20 GENERAL IMPROVEMENTS AND RECYCLED WATER PROGRAMS CLOSED PROJECTS > $1 MILLION • No applicable projects to report for these two programs F29 CENTRALSAN QUESTIONS? 30 CENTRALSAN -a -- 15 September 1, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 38 of 40