City of Rialto, S1 Wastewater Treatment Plant Improvements Project

The Wastewater Treatment Plant (WWTP), constructed in 1955 and eventually expanded in later years, was in need of upgrades in order to continue providing reliable service to the community. There are five plants that make up the overall WWTP. Plant 1 is currently not in use and Plants 2, 3, 4 and 5 are in operation.
The Rialto S1 WWTP Improvements Projects is a Joint Venture Project between W.M. Lyles Co. (WML)/AECOM and consists on the following approach and strategy: To build the Plant 5 expansion, new disc filters and new CCT Disinfection “off-line” and after appropriate startup and testing bring the new facilities into service. Construction of Plant 5 facilities is the critical path and accordingly construction timing of other plant facilities will be adjusted so that all new facilities are ready for performance testing at the same time. Once new Plant 5 facilities are online, commissioned and successfully complete a 30-day performance test, we will next take the existing Plant 5 Aeration Basins off-line for effluent gate replacement and the anoxic zone baffle wall modifications. After first Aeration Basin work startup and testing is complete, the second existing Aeration Basin will be taken off-line and the needed improvements conducted. The project is currently on time and on budget.

City of El Paso de Robles, Wastewater Treatment Plant Upgrade Project

Upgrade to the existing wastewater treatment plant from 4.9 MGD to 12.74 MGD. This was accomplished by in part by replacing aging systems, including the trickling filter treatment process with a biological nutrient removal (BNR) system. Other improvements included three new secondary clarifiers, headworks ,DAFT facilities, operations, warehouse, cogeneration, and blower buildings, vehicle canopy, RAS pump station, WAS EQ tank, scum pump station, W-3 pump station, chemical feed facilities and effluent polishing earthen channel to discharge to the Salinas River. Efficiency upgrades included a cogeneration system to use digester bio-gas to generate heat and electricity. Listed construction improvements were coordinated with plant staff, and completed on this multiple phased construction project while the existing treatment process remained in operation.

Western Riverside County Regional Wastewater Authority, 14 MGD Plant Expansion Project

Construction of a 6.0 MGD expansion to an existing conventional WWTP that increases the treatment capacity up to 14.0 MGD. Construction activities include headwork’s expansion with new bar screens, washer compacter, and grit classifier, two primary clarifiers, equalization basin, bioreactor, bio filter, secondary clarifier, cloth disc tertiary filters, chlorine contact basin, recycle water pump station, masonry digester building, solar drying beds and odor control system, five electrical buildings and associated site electrical, instrumentation, piping, paving, and fencing. Upgrades to the existing plant include new centrifuges, fixed steel digester covers, odor control facilities, masonry thickener building and chemical building upgrades.

Victor Valley Wastewater Reclamation Authority, Subregional Water Reclamation Plants Project

The VVWRA Subregional Plants Project includes two individual 1 MGD scalping water reclamation plants (WRP), one located in the City of Hesperia and the other in the Town of Apple Valley. They treat a portion of the local wastewater, while all solids and the balance of the wastewater continues to the main treatment plant in Victorville. This scalping design provides needed reclaimed water to local agencies as well as reduce the impact of the wastewater flows on the existing pipeline system. The two facilities include odor control filters, storm water pump stations, reclaimed water pump stations, influent fine screens, two aeration basins, inline UV disinfection, Anaergia MBR including permeate and backwash pumping, RAS and WAS pumping station, percolation ponds, distribution piping, paving, and elaborate site fencing. In addition to the WRP sites there is also a Hesperia Lift Station site with a 40’ foot deep pump station, odor control filter, masonry electrical building and associated site piping, paving, and fencing. In all, there are 4 project site locations and 5 miles of pipeline traveling through the streets of Hesperia and the Town of Apple Valley.

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

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.

County Sanitation District of Los Angeles, Palmdale Water Reclamation Plant Stage Five Plant Expansion

Expansion of existing 9 MGD water reclamation plant to 15 MGD. Construction work consisted of nine final sedimentation tanks, six aeration tanks, chlorine contact tank, 1.75 MG prestressed concrete digester with cleaning bed and pump stations, six tertiary filters, two dissolved air flotation units, RAS pump station, four chemical facilities, six Title 22 cloth disk filters, generator building, air compressor building, boiler house, four switchboard buildings, operations and lab building, and associated pipelines, grading, paving and site improvements.

City of Fillmore, Water Recycling Project

W. M. Lyles Co. (Contractor) partnered with American Water (Operator) and Kennedy/Jenks (Designer) to successfully complete the Fillmore Water Recycling Design-Build-Operate Project. The new 1.8 MGD facility, which produced Title 22 reclaimed water, included flood protection levees, influent sewer pipelines, headworks, equalization basin, grit removal, MBR (GE/Zenon), UV disinfection, reclaimed water storage, and effluent pipelines.