Silverlake 1
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LADWP, Silver Lake Reservoir Complete Storage Replacement Project

Water Treatment

W. M. Lyles Co. has teamed with Webcor Builders and Obayashi Corporation to form Webcor, Obayashi, Lyles, (WOL) a Joint Venture CMAR for the Silverlake Complex Storage Replacement Project. WOL provides construction services and design support for LADWP to meet Federal Water Quality Regulations by con-structing two underground reservoirs and a 96’’ diameter pipeline which will re-place the operational function of the existing Silverlake and Ivanhoe reservoirs. Phase 1 of the project consists of the construction of a 55 million gallon concrete reservoir, connecting piping and a 3,000 foot long 12 foot diameter tunnel.

Fresno 2
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City of Fresno, Southeast Surface Water Treatment Facility

Water Treatment

The SESWTF is designed to treat 80 MDG of surface (river) water from the Kings River to provide potable water to City residents. This greenfield project includes the following processes; flow control struc-ture, pre-treatment basins (flocculation/sedimentation with plate settlers), ozone disinfection structure, and filters (GAC gravity filter). The facility also includes an 8MG treated water reservoir, chemical building, treated water and backwash pump station; washwater recovery and solids lagoons and associated pump stations, electrical substation, operations building, maintenance building, all site utilities (with pipelines up to 84”), landscaping and pavement throughout the site, perimeter block wall and offsite road utilities.

California Water Service Co. NW Bakersfield 1
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Cal Water, Northwest Bakersfield WTP Increase Net Treatment Capacity Upgrade

Water Treatment

The Northwest Bakersfield Water Treatment Plant has been unable to achieve design capacity due to high turbidity water reaching the membrane filters which resulted in excessive backwashing and reduced plant output. W. M. Lyles Co. with Black & Veatch as a design sub consultant was selected to provide design-build services to increase plant capacity to 8 MGD (net) and 10.4 MGD (peak) by installing a pretreatment system ahead of the membrane filters. The project included the construction of a 0.42 MG gallon concrete Pretreatment Basin with four Flocculating Mixers, and two trains of Plate Settlers with Straight Line Residuals Sludge Collecting equipment. Mechanical piping sludge draw off from the basins to sewer occurs via a hydraulic head pressure siphon. A new onsite PACL chemical system was installed that included tank storage, chemical feed and flash mixing facilities. The existing earth retention basin was reconstructed and concrete lined to handle the treatment process backwash, system overflows and site storm water runoff. All work was constructed on a very congested site with limited available space for equipment laydown and construction operations.

Bakersfield TCP Mitigation
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City of Bakersfield, TCP Mitigation Project

Water Treatment

1,2,3-Trichloropropane (TCP), is an unregulated organic chemical that the State Water Resources Control Board (“SWRCB”) and its Division of Drinking Water have been studying for regulation for several years. In late 2017, the SWRCB approved a maximum containment level (MCL) for TCP of 5 parts per trillion, with compliance monitoring scheduled to commence in January 2018. This fast-track project was required for the City to meet TCP MCL compliance. The City identified 34 well sites that needed treatment with granulated activated carbon (GAC) and W. M. Lyles Co. (WML) was contracted under a progressive design-build agreement for engineering and construction services. WML provided the procurement, installation, carbon loading, and start-up and commissioning of 104 owner-furnished GAC vessels, which expeditiously brought all 34 well sites into full and complete TCP MCL compliance. Provost & Pritchard was engaged to perform engineering and construction management. Construction also included site grading and earthwork, mechanical piping, concrete foundations, backwash tanks and offsite piping.

OCSD
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Orange County Sanitation District, Sludge Dewatering & Odor Control at Plant No. 1

Wastewater Treatment

This Project constructs a new thickening and dewatering building and odor control system to replace the existing sludge handling systems for the 100MGD Plant. The construction includes 14,000cy of concrete, 32,000sf of elevated deck shoring, 570 CIDH piles, approx. 85,000lf of piping, multiple story structural steel, architectural, mechanical, fire control, plumbing, electrical and instrumentation and control systems for the new thickening and dewatering building, odor control system, two new tunnels, valve vault, and a screen wall as well as rehabilitation of exiting silos and truck load-out facilities. Over $4Million of VE ideas were accepted by the client.

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Antelope Valley East Kern Water Agency, Westside Water Agency, Phase 2 Well Equipping and Treatment Site Modifications

Underground Utilities, Water Treatment

Design-Builder of the $126M Tesoro Viejo Water/Wastewater Program. The Program will service the development’s 5,200 dwellings, the 3.0 Million sf industrial and commercial space, schools, hospital, parks, open spaces and trails. The Water/Wastewater Program is being delivered in stages in order to coincide with the anticipated growth of the development.