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HomeMy Public PortalAboutJuly 22, 2021 CC Agenda Packet CITY COUNCIL WORKSHOP 550 E. 6th Street, Beaumont, CA Thursday, July 22, 2021 Workshop: 4:00 PM Materials related to an item on this agenda submitted to the City Council after distribution of the agenda packets are available for public inspection in the City Clerk’s office at 550 E. 6th Street during normal business hours. AGENDA MEETING PARTICIPATION NOTICE This meeting will be conducted utilizing teleconference communications and will be recorded for live streaming as well as open to public attendance subject to social distancing and applicable health orders. All City of Beaumont public meetings will be available via live streaming and made available on the City's official YouTube webpage. Please use the following link during the meeting for live stream access. beaumontca.gov/livestream Public comments will be accepted using the following options. 1. Written comments will be accepted via email and will be read aloud during the corresponding item of the meeting. Public comments shall not exceed three (3) minutes unless otherwise authorized by City Council. Comments can be submitted anytime prior to the meeting as well as during the meeting up until the end of the corresponding item. Please submit your comments to: nicolew@beaumontca.gov 2. Phone-in comments will be accepted by joining a conference line prior to the corresponding item of the meeting. Public comments shall not exceed three (3) minutes unless otherwise authorized by City Council. Please use the following phone number to join the call (951) 922 - 4845. 3. In person comments subject to the adherence of the applicable health orders and social distancing requirements. In compliance with the American Disabilities Act, if you require special assistance to participate in this meeting, please contact the City Clerk's office using the above email or call (951) 572 - 3196. Notification 48 hours prior to a meeting will ensure the best reasonable accommodation arrangements. 1 WORKSHOP SESSION - 4:00 PM CALL TO ORDER Mayor Lara, Mayor Pro Tem White, Council Member Martinez, Council Member Fe nn, Council Member Santos Action of any Requests for Excused Absence Pledge of Allegiance Approval / Adjustments to the Agenda Conflict of Interest Disclosure PUBLIC COMMENT PERIOD (ITEMS NOT ON THE AGENDA) Any one person may address the City Council on any matter not on this agenda. If you wish to speak, please fill out a “Public Comment Form” provided at the back table and give it to the City Clerk. There is a three (3) minute time limit on public comments. There will be no sharing or passing of time to another person. State Law prohibits the City Council from discussing or taking actions brought up by your comments. ACTION ITEMS 1. Presentation of Draft Wastewater Master Plan Recommended Action: Council discussion. ADJOURNMENT The next regular meeting of the Beaumont City Council, Beaumont Financing Authority, the Beaumont Successor Agency (formerly RDA), the Beaumont Utility Authority, the Beaumont Parking Authority and the Beaumont Public Improvement Agency is scheduled for Tuesday, August 3, 2021, at 5:00 p.m., unless otherwise posted. Beaumont City Hall – Online www.BeaumontCa.gov 2 City of Beaumont 2021 Wastewater Master Plan June 22, 2021 Workshop –Draft Master Plan 3 Item 1. Objectives of the Wastewater Master Plan The Wastewater Master Plan (WWMP) provides a capacity adequacy assessment of the City’s sewer collection system to meet the level of service expected by existing customers, and to service future growth. •What Infrastructure Needs to be Constructed? •When we do we need it? •How much will it cost? •Who pays for it? The WWMP is a defensible planning and budgetary document4 Item 1. Wastewater Flows are Collected from our Homes Wastewater Flows are Collected from our homes to the Sewer pipelines in the street 5 Item 1. Wastewater flows continue to WWTP via Gravity Sewers, Lift Stations, and Force Mains Source: Metropolitan St. Louis Sewer District 6 Item 1. Beaumont Wastewater is Collected from Tributary Basins and Conveyed to the WWTP •Green Lines are smaller Gravity Sewers. •Blue Lines are Large Conveyance Sewers (Backbone). •Dashed lines are force mains •RED arrows indicate the direction of wastewater flows 7 Item 1. Existing Wastewater Collection System •177 miles of Gravity Sewers •20 miles of Force Main •10 Lift Stations •1 Wastewater Treatment Plant 8 Item 1. The Process for Developing the WWMP Phase 1 •Data Collection and Review •Establish Planning Criteria Phase 2 •Develop and Calibrate Hydraulic Model Phase 3 •Perform Hydraulic Analysis/Evaluations •Propose Improvements Phase 4 •Develop Capital Improvement Program (CIP) Phase 5 •Prepare Master Plan Report 9 Item 1. AGENDA –Follows WWMP Report Chapters Chapter Description 1 Introduction 2 Planning Area Characteristics 3 System Performance and Design Criteria 4 Existing Sewer Collection Facilities 5 Wastewater Flows 6 Hydraulic Model Development 7 Hydraulic Evaluation and Proposed Improvements 8 Capital Improvement Program (costs)10 Item 1. Chapter 1 –Introduction Purpose of Chapter Key Chapter Elements The purpose of this chapter is to introduce the master plan objectives. •Regional Location Map •WWMP Objectives •Definitions •Abbreviations •Report Organization 11 Item 1. Regional Location Map 12 Item 1. Objectives of the WWMP Objective Description Characterize Planning Area (Existing Customers, Sewer Flows, Land Use for Future Developments) How much sewer flows from existing customers? What lands are expected to develop within the planning horizon? Develop and Calibrate GIS-based Hydraulic Model The Model is an accurate tool for evaluating the capacity adequacy of pipelines and lift stations. How much flows are generated by Basin? Evaluate existing pipelines and lift stations system capacities Do we meet an adequate Level of Service? Recommend improvements to mitigate existing pipe deficiencies What improvements are needed to meet an adequate Level of Service? Perform Lift Station Field Review We rely on lift stations. What is the overall lift stations structural condition? Required improvements to service growth What improvements are required from future developments Develop Capital Improvement Program (CIP)How much do the improvements Cost (Existing Users and Future Developments) 13 Item 1. Chapter 2 –Planning Area Characteristics Purpose of Chapter Key Chapter Elements The purpose of this chapter is to summarize the City’s service area, including existing and future land use and population. •Service Area •Existing Land Use •General Plan Land Use •Land Use Inventory •Specific Plans •Population 14 Item 1. Wastewater Service Area Beaumont Land Use and Sewer System Service Area Existing Land Use 2040 General Plan Land Use 15 Item 1. Land Use Inventory 16 Item 1. Specific Plan Land Use Inventory 17 Item 1. Service Area Population •Historical and projected populations documented for informational purposes •Population of 67,144 by 2038 (Based on City Staff projections) 18 Item 1. Chapter 3 –System Performance and Design Criteria Purpose of Chapter Key Chapter Elements The purpose of this chapter is to discuss City’s wastewater system performance and design criteria. •System Performance and Design Criteria •Wastewater Unit Factor Analysis •Wastewater Diurnal Pattern Criteria is consistent with Eastern Municipal Water District 19 Item 1. System Performance and Criteria Criteria consistent with Eastern Municipal Water District 20 Item 1. Wastewater Unit Factor Analysis Factors applied to Land Use to estimate wastewater flows 21 Item 1. Characterizing WW Flows Shows hourly variations in wastewater flow Developed from flow monitoring data. 22 Item 1. Chapter 4 –Existing Wastewater Collection Facilities Purpose of Chapter Key Chapter Elements The purpose of this chapter is to discuss City’s existing wastewater system. •Existing Pipelines Inventory •Lift Station Inventory 23 Item 1. Existing Wastewater Collection System •177 miles of Gravity Sewers •19 miles of Force Main •10 Lift Stations •1 Wastewater Treatment Plant 24 Item 1. Existing System Pipeline Inventory 25 Item 1. Lift Station Connectivity Schematic 26 Item 1. Lift Station Inventory 27 Item 1. Chapter 5 –Wastewater Flows Purpose of Chapter Key Chapter Elements The purpose of this chapter is to summarize historical wastewater flows at City’s WWTP and project flows for future growth. •Historical Flow Summary •Buildout Wastewater Flows 28 Item 1. 2019 WWTP Flows (January-December) Highest months are August and November. November high flows due to Wet weather flows 29 Item 1. Historical Wastewater Flows Data •3.66 mgd is the average flow •1.33 times higher than average during maximum day dry weather •1.88 times higher than average during maximum day wet weather 30 Item 1. Projected Buildout Wastewater Flows 31 Item 1. Chapter 6 –Hydraulic Model Development Purpose of Chapter Key Chapter Elements The purpose of this chapter is to discuss the hydraulic model development and calibration process of the wastewater collection system. •Hydraulic Model Development •Flow Monitoring Program •Hydraulic Model Calibration 32 Item 1. Existing Modeled WW System 33 Item 1. Flow Monitoring Program 14 Flow Monitoring Sites 34 Item 1. Hydraulic Model Calibration •Dry and Wet Weather •Benchmark for future evaluations •Calibration results were acceptable Dry Weather Wet Weather 35 Item 1. Chapter 7 -Hydraulic Evaluation and Proposed Improvements Purpose of Chapter Key Chapter Elements The purpose of this chapter is to evaluate the existing wastewater system and recommend improvements to mitigate existing deficiencies and serve future growth. •Existing System Evaluation •Recommended Improvements •Future System Evaluation 36 Item 1. Existing System Evaluations •Evaluated for peak dry and wet conditions •Considered 10- Year 24-Hour Design Storm •Capacity of Existing Pipelines is Good. Dry Weather Wet Weather 37 Item 1. Beaumont Mesa LS Improvements •Critical Regional Lift Station •Planned improvements to mitigate deficiencies •Replace existing pumps (undersized) •Complete parallel force main (segment currently offline) •Expand wet well (lacks sufficient emergency capacity) 38 Item 1. Lift Station Capacity Evaluation •Capacity of Existing Lift Stations not adequate. •Future growth requires additional lift station capacity 39 Item 1. Future Capacity Improvements •Red represent existing pipe deficiencies. •Purple represent existing pipes needing upgrade to service growth •Green lines represent New pipes to service growth 40 Item 1. Future System Evaluations •Evaluated for peak dry and wet conditions •Validates the recommended improvements Dry Weather Wet Weather 41 Item 1. Chapter 8 –Capital Improvement Program Purpose of Chapter Key Chapter Elements The purpose of this chapter is to summarize the City’s Buildout and 10-Year Capital Improvement Programs. •Unit Costs •Buildout Capital Improvement Program •10-Year CIP 42 Item 1. Units Costs •Documenting Cost Assumptions 43 Item 1. Capital Improvement Program •Prepare Capital Improvement Projects based on recommended improvements 44 Item 1. 10-Year CIP • Gravity Pipeline Improvements: $0.3 million • Beaumont Mesa LS Improvements: $9.6 million • Lift Station Condition Assessment Improvements: $3.6 million • Operation and Maintenance Improvements: $5.1 million • Wastewater Treatment Plant Improvements: $2.0 million 10-Year CIP Cost: $20.6 million 45 Item 1. Buildout CIP • Pipeline Capacity Improvements: $32.3 million • Force Main Capacity Improvements: $21.2 million • Lift Station Improvements: $34.6 million • Other Wastewater System Improvements: $10.7 million Total Cost: $98.9 million 46 Item 1. Sewer System MP Summary Points •Serving Existing Customers •Capacity of Existing Sewer System is good. •Capacity of Most Existing Lift Stations not adequate. •Extending Service to Future Growth •Future Capacity Pipeline Projects are Developer Driven. •Deliverables •Master Plan Document •Hydraulic Model 47 Item 1. Next Steps! •Rate Study •Pipeline Condition Assessment (State and Federal Regulations) •Lift Station Condition Assessment •Update Master Plans every 5 years 48 Item 1. Next Steps: Evaluate Condition of the Sewer System Sewer system pipes age over the years, and if not replaced on time, they will fail 49 Item 1. Methods for Evaluating Pipe Condition •Age-based Replacement Program •Risk-based Replacement Program •Evaluate the Likelihood of Failure •Evaluate the Consequence of Failure •Evaluate the total Risk Score 50 Item 1. City of Beaumont 2021 Wastewater Master Plan June 22, 2021 Workshop –Draft Master Plan 51 Item 1.