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Home My WebLink About04.b. Review draft Position Paper to authorize the General Manager to execute a technical consulting services agreement with Hoffman Southwest Corporation in an amount not to exceed $865,000 to provide inspection services for the Large Diameter Pipeline Page 1 of 13 Item 4.b. CENTRAL SAN BOARD OF DIRECTORS POSITION PAPER DRAFT MEETING DATE: AUGUST4, 2020 SUBJECT: REVIEW DRAFT POSITION PAPER TO AUTHORIZE THE GENERAL MANAGER TO EXECUTE ATECHNICAL CONSULTING SERVICES AGREEMENT WITH HOFFMAN SOUTHWEST CORPORATION IN AN AMOUNT NOT TO EXCEED $865,000 TO PROVIDE INSPECTION SERVICES FOR THE LARGE DIAMETER PIPELINE INSPECTION PROGRAM - PHASE 1, DISTRICT PROJECT 8443; AND FIND THAT THE PROJECT IS EXEMPT FROM THE CALIFORNIA ENVIRONMENTAL QUALITYACT (CEQA) SUBMITTED BY: INITIATING DEPARTMENT: JUSTIN WAPLES, ASSOCIATE ENGINEER ENGINEERING AND TECHNICAL SERVICES- PDS-PLANNI NG AND APPLI ED RESEARCH REVIEWED BY: DAN FROST, SENIOR ENGINEER DANEA GEMMELL, PLANNING AND DEVELOPMENT SERVICES DIVISION MANAGER PAUL SEITZ, COLLECTION SYSTEM OPERATIONS DIVISION MANAGER JEAN-MARC PETIT, DIRECTOR OF ENGINEERING AND TECHNICAL SERVICES ISSUE Board of Directors' authorization is required for the General Manager to execute a Technical Consulting Services Agreement in an amount greater than $100,000, and to find the project is exempt from CEQA. BACKGROUND Central San began its Sewer Closed-Circuit Television (CCTV) Inspection Program in 2002. The program's goal is to assess the condition of the collection system using CCTV and inform maintenance and capital improvement needs. Central San has 76 miles of large diameter interceptor pipes (>24 inches to 102 inches in diameter). Nearly half of Central San's large diameter pipes are over 50 years old. Although Central San performs CCTV inspections of large-diameter pipelines, CCTV inspection of large diameter pipelines is not always practical and does not always provide the necessary information to establish an accurate condition of the infrastructure. Central San plans to use multi-sensor inspection (MS 1)technology to obtain the necessary August 4, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 21 of 69 Page 2 of 13 asset condition information for its large diameter pipelines. The MSI technology involves the use of multiple sensors on robotic platforms to collect data. Using existing CCTV inspection records, candidate pipelines were identified for trialing Central San's use of MS 1, an inspection plan was developed, and a request for proposal was advertised to conduct the inspection work. The candidate pipelines include approximately 630 feet of 39-inch reinforced concrete pipe near the treatment plant in Martinez under Highway 4, and approximately 29,000 feet of 30-to 36-inch reinforced concrete pipe along Danville Boulevard, and associated manholes. These inspections will be used as a pilot project to inform Central San's efforts to develop a system-wide programmatic inspection and renovation program for the large diameter pipelines. Following completion of this project, staff will be preparing a large diameter pipeline inspection implementation plan that will refine the approach for subsequent inspection projects - including pipeline prioritization, timing, inspection costs, and inspection services procurement and implementation alternatives.Any renovation needs identified through this inspection project and subsequent inspection project phases will be funded through the separate Large Diameter Renovation Program project included in the Fiscal Year 2020-21 Budget Book. The request for proposal was advertised on June 15, 2020. Three proposals were received and opened on July 8, 2020 (Redzone Robotics, Hoffman Southwest Corporation, and Pipe and Plant Solutions, Inc.). Engineering and Operations staff conducted a technical evaluation of the proposals, conducted interviews on July 24, 2020, and selected Hoffman Southwest Corporation as the highest ranked proposer. The proposed work includes MSI inspection of the candidate pipelines using high definition CCTV, laser profiling, hydrogen sulfide recordings, visual inspections of manholes, and all associated data management and processing leveraging Central San's existing ITpipes CCTV inspection platform, quality assurance/quality control, and reporting. CEQA Staff has concluded this project is exempt from CEQA under Central San CEQA Guidelines Section 15262, since it will provide information for design of sewer improvements and will not have a legally binding effect on later activities.Approval of this project will establish the Board's independent finding that this project is exempt from CEQA. Staff anticipates issuing a notice to proceed in September 2020. Inspections are anticipated to be completed by December 2020 with final inspection reports anticipated in January 2021. Staff will then use the results from the inspection work to evaluate and prepare recommendations for subsequent large diameter pipeline inspection program phases, and to evaluate and scope any renovation needs identified from the inspections. ALTERNATIVES/CONSIDERATIONS 1. Reject all proposals and acquire equipment and expertise for Central San staff to conduct the multi- sensor inspections. Planning and Applied Research staff evaluated the cost to complete the work in- house versus contracting with an outside vendor. Not including the need to acquire and maintain the equipment and train staff to operate the specialized equipment, the estimated annual labor cost for one crew(consisting of one maintenance crew leader and one maintenance crew member) is estimated at$305,075.Assigning Collection Systems Operations staff away from routine collection system maintenance to undertake multi-sensor inspections would impact the amount of routine maintenance being completed by approximately 10,000 feet per week. Given the pilot nature of the work, staff does not recommend this alternative but could consider re-evaluating the feasibility of acquiring equipment, training, and using Central San staff to conduct future inspections after gaining more experience with multi-sensor inspections under this project, and after further evaluating the benefits of a multi-sensor inspection program. August 4, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 22 of 69 Page 3 of 13 2. Reduce the number of miles of pipeline inspected. Staff does not recommend this alternative. Staff selected the candidate pipelines for this project to assess the condition of pipelines that may require near-term renovation, that may represent a range of pipeline conditions, and to solicit cost-efficient inspection proposals. FINANCIAL IMPACTS The total estimated cost for the agreement is $865,000, which includes an allowance for additional inspection work and/or cleaning to facilitate inspections, if required and approved by Central San. The total budget for the Large Diameter Pipeline Inspection Program - Phase 1 (District Project 8443) is $1,841,000 as presented in the Fiscal Year 2020-21 Budget. The total budget includes $865,000 for the large diameter inspection, $250,000 for as-needed consultant support using the existing on-call consultant agreement, staff time, and allowances for additional costs related to possible survey work, additional data management and migration needs. COMMITTEE RECOMMENDATION The Engineering and Operations Committee reviewed this item at the meeting on August 4, 2020, and recommended RECOMMENDED BOARD ACTION 1. Find that the project is exempt from CEQA. 2. Authorize the General Manager to execute a Technical Consulting Services Agreement with Hoffman Southwest Corporation in an amount not to exceed $865,000 for the Large Diameter Pipeline Inspection Program - Phase 1, District Project 8443. Stratedc Plan Tie-In GOAL TWO:Environmental Stewardship Strategy 1—Achieve 100%compliance in all regulations GOAL FIVE:Infrastructure Reliability Strategy 1—Manage assets optimally to prolong their useful life ATTACHMENTS: 1. Presentation August 4, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 23 of 69 Page 4 of 13 LARGE DIAMETER PIPELINE �1 INSPECTION PROGRAM - PHASE 1 DISTRICT PROJECT 8443 UPDATE Engineering and Operations Committee Meeting August 4, 2020 Justin Waples,Associate Engineer Dan Frost, Senior Engineer PURPOSE OF THE LARGE DIAMETER PIPELINE INSPECTION PROGRAM • Successful programs are in place for small diameter sewers — renovation program, closed-circuit television (CCTV) inspection, cleaning, etc. •There are >75 miles of 24-inch and larger pipelines • High consequence of failure and higher cost to renovate than small diameter pipelines • Better understanding of remaining life will improve capital renovation planning • Multi-sensor inspections can help assess large diameter pipeline conditions 2 CENTRAL SAN 1 August 4, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 24 of 69 Page 5 of 13 THIS PROJECT AND SUBSEQUENT LARGE DIAMETER INSPECTION PHASES WILL CONFIRM CAPITAL PROGRAM NEEDS • Capital Improvement Plan includes Large Diameter Renovation Program placeholder budget: $17 million within 10 years • Capital Improvement Plan includes subsequent Large Diameter Pipeline inspection phases of-$4 million within 10 years • Using InfoMaster, staff estimates Large Diameter Renovation needs could be as high as $63 million within 20 years • Scale of the Large Diameter Pipeline (Interceptor) assets represent a significant amount of infrastructure (>$900 million replacement cost) \ 3 THE MAJORITY OF LARGE DIAMETER PIPELINES ARE CORRODIBLE CONCRETE PIPE 0.2% 0.9% 0.9% 2.8% 0.4% 1.6% 4.0%2.8% 1.7% 0.0% ■Vitrified Clay Pipe(VCP) ■Pre-1960 Vitrified Clay Pipe(Pre-1960 VCP) � ■Cement Mortar Lined and Coated Pipe(CMLC) ■Polymer Concrete/Polycrete(PC) ■Reinforced Concrete Pipe(RCP) ■Lined Reinforced Concrete Pipe(Lined RCP) ■Cast Iron Pipe •Corrugated Metal Pipe(CMP) low ■Ductile Iron Pipe(DIP) ■Asbestos Cement Pipe(AC) 71.5% ■High-Density Polyethylene Pipe(HDPE) ■Polyvinyl Chloride Pipe(PVC) 4 2 August 4, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 25 of 69 Page 6 of 13 VISUAL INSPECTIONS DO NOT CONFIRM EXTENT OF CORROSIONMALL LOSS t CCTV =s Corrosion: <10 --` Laser/LiDar Visual Inspection s Cross-Sections Source: ___ s _ Freese& Nichols Corrosion: >80% - 5 CENTRALSAN PIPE AGE DOES NOT ALWAYS REFLECT A PIPE'S CONDITION Pipe Age us.AUL Score 1 R -1 ]GIS 411 I �Yl1 Pipes Installed Around Same Years isu 1 3 ] 4 S Iljy-311 h]l ova i1��MIQ Found with Varying Conditions 6 3 August 4, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 26 of 69 Page 7 of 13 REVIEW OF CCTV RECORDS COMPLETED TO IDENTIFY PROJECT AREAS 39-Inch Pipeline (Interceptor 1) Near 30-Inch to 36-Inch Pipelines Along Treatment Plant in Martinez Danville Blvd in Danville&Alamo :T " :j Pipe shown in Red Pipe stretch along Danville Blvd 4 i CENTRAL SAN :f EXPOSED REINFORCING BARS AND SOLIDS ACCUMULATION IN 39-INCH RCP NEAR TREATMENT PLANT e i -630 Feet 39-Inch RCP from late 1940s Segment has Preliminary Ranking of Severe 8 CENTRALSAN 4 August 4, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 27 of 69 Page 8 of 13 CORROSION IDENTIFIED IN DANVILLE BOULEVARD INTERCEPTOR �Ille Serer F _ Sycamore valley R7 SS) E41i88 -> 48ELM8T' r RCP, 36" :' CS) 98E4M87 -> 98E4M86• a RCP. 36" -29,000 FEET 30-Inch to 36-inch RCP from mid-1950s Segments Include Preliminary Rankings of _- Unknown, Light, Moderate, and Severe - r f i FTi�TIT111001AIJELILim MEL . f CENTRALSAN 9 INSPECTION VISION TO SYNC WITH ITPIPES AND GEOPORTAL PLATFORMS .e -� A� Source:City of Fort Worth,TX 10 CENTRALSAN 5 August 4, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 28 of 69 Page 9 of 13 PROJECT SCHEDULE i i Complete Inspections • Prepared Phase Interceptor Inspection Plan (February—May) • Request for Proposal for Inspections(June—July) • Complete Inspection Work(September—December) i Inspection Results, Evaluation, & Next Steps • Vendor Condition Assessment Summary • Renovation Needs&Alternatives Evaluation-> Update CIB/CIP • Initiate Preliminary Design for Potential Renovation Needs • Prepare Large Diameter Inspection Implementation Plan-> Update CIB/CIP • Initiate Planning for Large Diameter Pipeline Inspection Program—Phase 2 CENTRAL SAN SELECTION PROCESS OVERVIEW • Inspection Plan was prepared in May 2020 • Request for Proposal issued June 15, 2020 • Three Proposals received on July 8, 2020 • Interviews conducted on July 24, 2020 • Staff completed technical & qualifications based ranking process • Staff selected Hoffman Southwest Corporation (dba Pro-Pipe)as the highest ranked Proposer: • CUES SOLID FX technology: high-definition camera, LiDAR, SONAR (depending on water level), mapping probe,temperature&hydrogen sulfide sensors • Options available—floating or tractor platforms, 2-D or 3-D LiDAR • Manhole condition reports and high definition 3-D virtual imagery • Local operations facility with available cleaning equipment Familiarity with Central San data coding and ITpipes platform 12 6 August 4, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 29 of 69 Page 10 of 13 BUDGET AND ESTIMATED COSTS FOR DISTRICT PROJECT 8443 , . Total . Date Cost $765,000 $530,000 $546,000 $0 $1,841,000 • Inspection Agreement: will not exceed $865,000 engineer's estimate (Staff is finalizing scope and fee with Hoffman Southwest Corporation) • Consultant Support using existing On-Call Agreement: $250,000 • Staff Time • Other Costs (e.g. possible survey, data management/migration, etc.) • Any renovation needs identified will be funded under the separate Large Diameter Renovation Program project budget already included in the Budget Book (includes$17 million 10-Year Capital Improvement Plan budget with $1.5 million available starting in fiscal year(FY)2020-21) 13 RECOMMENDED BOARD ACTIONS • Find that the Project is exempt from the California Environmental Quality Act (CEQA) •Authorize the General Manager to execute a Technical Consulting Services Agreement with Hoffman Southwest Corporation in an amount not to exceed $865,000 for the Large Diameter Pipeline Inspection Program — Phase 1, District Project 8443 14 7 August 4, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 30 of 69 Page 11 of 13 QUESTIONS CENTRALSAN _ -- ADDITIONAL INFORMATION 16 CENTRALSAN 8 August 4, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 31 of 69 Page 12 of 13 INTERCEPTORS WERE INSTALLED OVER A PERIOD OF 70+ YEARS �15 n 19 5 1940 1950 1960 1970 1980 1994 2040 Dende o!Installatlan ■RCP ■Uned•RCP ■PVC ■AC ■VCP 1960-Present ■PC ■DIP MCMLC ■VCP Pre-1964 ■CM ■HDPE ■CAS 17 CENTRALSAN INSPECTION PROGRAM WILL CONSIDER RANGE OF PIPE SIZES AND MATERIALS 18.00 16.00 14.00 lr.D4 10.00 E 6.00 4.00 0.44 � 1 11 I � � I 1 1 1 ■ ■ 24 27 30 32 33 36 39 42 45 48 54 60 63 66 72 78 84 87 90 96 102 Diameter Ii nctu l ■RCP M Lined-RCP ■PVC ■AC l VCP 1960-Present ■PC i I11P M CMLC ■VCP pre-1960 ■CM ■H6PE ■CAS 18 CENTRAL SAN 9 August 4, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 32 of 69 Page 13 of 13 SISTER AGENCIES ARE ALSO STARTING TO TRIAL MULTI-SENSOR INSPECTIONS • City of Sacramento — Multi Sensor Inspection • City of Roseville — Multi Sensor Inspection • SASD — Multi Sensor Inspection • EBMUD — CCTV • San Jose — CCTV and Sonar • SFPUC — CCTV and Visual Inspection • Orange County— CCTV and Sonar • San Diego — CCTV and Sonar • Fort Worth — Multi Sensor Inspection • North Texas MWD — Multi Sensor Inspection 19 WALL LOSS WILL INFORM REMAINING USEFUL LIFE AND RENOVATION PRIORITY ICAP Results:Corrosion Remaining Useful Life ■Remaining Useful Life developed -- — each concrete wall specificatio re ■Condition Scor 28-cmw concrete pipe 11e�s 'Rgw an based on loc tiyQi cf steel reinforcemen ■Developed in ..... ..._----____ AutoCAD to 7 maintain a 1:1 •.--� scale AM I MN 20 10 August 4, 2020 EOPS Regular Committee Meeting Agenda Packet- Page 33 of 69