Project Goals and Description. The goal of this project is to improve EBMUD’s ability to monitor chlorine residual levels in the potable water distribution system by purchasing and installing 15 new chlorine analyzers at potable drinking water distribution reservoirs. The analyzers can provide real-time chlorine data to operations staff. EBMUD has approximately 4,200 miles of pipelines and approximately 165 drinking water distribution reservoirs throughout its service area. Currently, EBMUD monitors the chlorine residual in the pipes by collecting and analyzing instantaneous grab samples from 125 dedicated sampling stations on either a weekly or monthly basis depending on the area served. EBMUD also collects and analyzes grab samples from each reservoir at least once each month. While this level of chlorine residual monitoring meets regulatory requirements, it does not provide information about changes in chlorine residuals that occur between grab sampling events. In particular, significant changes in chlorine residual can occur in distribution reservoirs, particularly if they undergo nitrification. EBMUD has evaluated different chlorine analyzer technologies to determine the most effective analyzer based on EBMUD’s variable site needs and has selected the ChemTrac HydroAct 2 (HA2) sensor. EBMUD will begin a phased installation of 15 online (continuous) analyzers in 2019. A phased installation is necessary because of varying conditions in the distribution system (i.e., many sites are remote, all are unmanned, and some do not have plumbing connections, power, and communication for the analyzers). Therefore, each site must be engineered individually. Phase 1 will include installation of approximately 10 analyzers in 2019. Phase 2 will include installation of approximately 5 analyzers in 2020. The location of each analyzer will be determined based on operational needs.
Project Goals and Description. The Project involves replacing an aging water main near Xxxxxxxx Creek, with the goal of preventing potable water discharges that may adversely affect aquatic life. Cal Water will replace approximately 1,955 feet of existing cast iron pipe with polyvinyl chloride (PVC) pipe or polyethylene encased ductile iron pipe. Pipe sizes range from 8 to 16 inches. The PVC and polyethylene encased iron pipe material both have expected life span of about 100 years under normal use. Replacement of existing pipe will occur along Xxxxxxxx Road and the embankment of Xxxxxxxx Creek, near the confluence San Mateo Creek and Xxxxxxxx Creek in an unincorporated area of San Mateo County. The Project includes post-construction restoration, revegetation and stabilization of the work area to its native pre-construction condition. Completion of the Project may involve construction near and in jurisdictional water ways. Cal Water is responsible for compliance with State and/or federal regulatory permits and fees related to those jurisdictions, separate from its obligations under this ECA Project.
Project Goals and Description. The Smart Cover Installation Project has the following objectives:
Project Goals and Description. The goal of the project is to update the 2014 CA-NV BMPs Manual, publicize the update, provide training on the updated BMPs Manual, and share the Discharger’s compliance system information with other drinking water systems operators (Operators) in order to standardize and facilitate compliance with the Statewide General Permit. The Discharger will provide proposed BMPs for incorporation into the BMP Manual, and the BMP Manual update will contain examples related to planned discharges and unplanned or emergency discharges, as outlined below:
Project Goals and Description. The goal of this project is to purchase, install, and make operational three sewer monitoring units consisting of manhole lids with continuous dynamic level sensors, early warning systems, detection loggers, and direct link transmitters. The District will purchase the three units and will install them in selected sewer line segments. The units will be placed where SSOs have occurred, where SSOs are likely to occur, or where the units may identify sources of inflow and infiltration. After installation, the District will use the units as a tool to collect data in various parts of the collection system, and may move the units to different locations within the collection system. The long-term goal is to minimize the risk of SSOs to surface waters.
Project Goals and Description. Task 1 – Conduct investigation and additional monitoring. Conduct additional water quality monitoring to investigate the source of BOD problems and to identify potential sources of FOG in the Facility’s influent. These measures will contribute to a reduction of BOD violations by providing more information about the source of the problem. Task 2 – Chemical Treatment. Chemically treat redworms, tubiflex worms, FOG, and BOD following recommendations provided by Aquafix, Inc. (a specialist in biotechnologies to improve sludge vitality and effectiveness in wastewater treatment plants). These measures will reduce or eliminate BOD violations by directly reducing BOD and by reducing sources of BOD problems. Task 3 – Upgrade tertiary filters. Drain and clean the tertiary filters, replacing the existing 10-micron filter media with 5-micron filter media. Upgrading the filters will remove worms and reduce total coliform violations by improving the efficiency of the ultraviolet disinfection system. Task 4 – Develop operating procedures and source control measures. The Discharger is working with Xxxxxxx Engineering to conduct industrial user FOG inspections and develop a FOG source control program. These measures will reduce or eliminate BOD violations by reducing FOG in the Facility’s influent. In addition, the Discharger is working with PACE Engineering to develop operating procedures designed to improve FOG treatment, prevent recurrence of the worm infestation, and reduce BOD throughout the treatment process.
Project Goals and Description. The Denitrification Pilot Study has the following objectives:
Project Goals and Description. The goal of this project is to have a redundant filter at CSA 17 for ease of operations and maintenance. A new filter is being constructed as part of the base bid part of the project; however, the existing filter is obsolete, and replacement parts cannot be obtained. One filter is operated at all times and therefore cannot be taken offline for maintenance, as such Shasta County desires to include Additive Alternative A to the project to retrofit the existing filter. A redundant filter will allow for a filter to be taken offline annually for deep cleaning and other preventative maintenance thus maximizing filter useful life.
Project Goals and Description. The objective of the City of Colusa Wastewater Treatment Plant UV System Modifications and Optimization 2022 Project (Project) is to reduce effluent total coliform and ensure future compliance with effluent limitations for total coliform. The Project will consist of the following:
Project Goals and Description. The project will provide sanitary and shelter- related units for the unhoused population in Modesto. The City’s unsheltered community tends to reside in City parks, trails, public spaces (adjacent to public roads), rivers (Tuolumne River and Dry Creek), and structurally unsafe hand-dug caves. While there are restrooms in some park locations, many of these areas have no access to appropriate sanitary facilities. The bridge housing project underway at 000 0xx Xxxxxx will create a living environment with up to 42 cabins that will provide temperature-controlled shelter space and will provide meals and sanitary facilities such as restrooms, showers, and laundry facilities. This SEP will focus on installing restrooms, showers, laundry units, and associated water and sewer infrastructure for this bridge housing project (SEP Units). The City has partnered with the County of Stanislaus (County), who will oversee the maintenance and upkeep of the SEP Units located at 000 0xx Xxxxxx, Xxxxxxx, Xxxxxxxxxx.
