LAVWMA FY 2020/21 Capital Projects
|Rebuild Three Pumps and Their Associated Motors|
This project has been delayed from FYE21.The costs include $357,000 for the new pumps, rebuilding two motors, engineering services, and DSRSD staff time to remove the old pumps and install the new pumps and rebuilt motors. The projected delivery date for the new pumps is December 16, 2022
|San Leandro Sample Station (SLSS) Design Improvements|
This project has evolved from what was described for last year’s budget and is being carried over. It also now includes:
The SLSS station has to be designed to measure chlorine residual and monitor pH continuously. These parameters have to be measured both when effluent is going to EBDA and when effluent is dechlorinated and diverted to San Lorenzo Creek during wet weather events or during system testing. Composite samples of LAVWMA’s effluent need to be taken when its directed to both EBDA and San Lorenzo Creek. Grab samples of LAVWMAs Effluent also need to be collected for Bacteriological analysis in both situations. The design of the SLSS is complicated by the following factors: 1) The discharge to San Lorenzo Creek wet weather outfall is rare; 2) During normal daily operations the LAVWMA pumps shut off during peak demand periods and therefore the pipeline is not full during those times; 3) The station is not staffed continuously. The goal of this project is to work with operational staff and the RWQCB to design the station to meet operational, maintenance and regulatory expectations in a manner which creates as little day to day maintenance as possible. The project will now also address probable sea level rise at the discharge point and provide a design to ensure discharge will always be possible. Approximately $90,000 has been spent on design through the end of the fiscal year. The 75% plans and specifications have been received and reviewed.
|Pump Station Motor Control Center (MCC) and Soft Starter Upgrades|
In last year’s budget this was described as a two- year project. COVID-19 issues have delayed the design portion of the project. DTN Engineers is under contract for the design and technical support during construction. The final Engineer’s Estimate was $2,300,000 – $2,500,000. The original estimate was $1,065,000. The increased costs are due to the following:
|Cathodic Protection Projects|
This project is being carried over from FYE21. Corrpro is proceeding with this project. There were eleven tasks and the simplest eight have been completed. Three tasks require permitting, excavation and traffic control and are in development. This project has been delayed and is carried over from last year.
|PLC Upgrade at the Pump Station|
ne of the recommendations from the risk analysis project was to inspect portions of the pipeline and provide a report with future recommendations. The report recommended repairs on one section that will cost approximately $35-40,000. The repot also recommends continuing to inspection portions of the forcemains annually such that the entire pipeline will have been inspected within about five years. Much of this cost is for DSRSD staff. DSRSD staff has developed a plan that will be implemented this fall.
|Electrical Improvements to the Main Switchgear at the Pump Station|
This project is being carried over from FYE21. This project will improve the original equipment at the pump station. It includes upgrading to multi-function relays at the main service switch gear, which will require some design and interfacing with PG&E. It also includes adding time delay/remote close/trip switches for the main breakers to reduce the arc flash hazard to staff. Both of these items were recommended by the 2016 Pump Station Evaluation Report.
|Replace Seventeen Valve Actuators at the Pump Station|
There are seventeen valves that have electric actuators at the pump station. All of the valves actuators were installed when the pump station was upgraded twenty years ago and they are at the end of their useful lives. The actuators will be replaced with the newest technology and will match the style that are commonly used at DSRSD. The actuators cost approximately $9,000 each and will be installed by DSRSD staff. The total cost includes staff time for the installation.
|Replace Three Flow Meters at the Junction Structure|
The three flowmeters at the junction structure are at the end of their useful lives and are no longer as accurate as required for reporting purposes. The project will include replacing all three and then determine if further modifications, such as, snorkels, are required for the flow measurement accuracy required. The cost of the project includes the three meters plus installation and testing costs
|Other Misc. LAVWMA Renewal/Replacements|
|Other Misc. EBDA Renewal/Replacements|